Relevant bibliographies by topics / Turbine Lubrication

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Turbine Lubrication'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Turbine Lubrication"

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Yang, Xiaopin, Xinyu Liu, Guiyue Kou, Chunxia Xu, Wenhua Zhang, Rui Hu, Cui Wang, and Zhiying Zhao. "Wind Turbine Lubrication Based on Parallel Control of Multiple Factors." Journal Européen des Systèmes Automatisés 53, no. 5 (November 15, 2020): 653–60. http://dx.doi.org/10.18280/jesa.530508.

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The lubrication needs of wind turbines vary with the operating conditions. To provide a dynamic lubrication scheme for wind turbines under variable conditions, this paper designs a dynamically adjustable lubrication scheme through parallel control of multiple influencing factors. Based on mid- and long-term loads, the proposed scheme fully considers the influence of various sudden changes in addition to slowly changing factors like load, operating hours, and speed, such as to dynamically adjust the injection flow as per the specific operating condition of the turbine. The ideal lubrication effect was tracked through the adjustment of the injection flow or injection time, and used to determine the optimal dynamic lubrication control strategy during turbine operation. The proposed control strategy overcomes the defects of the traditional fixed-time fixed-flow lubrication approach, and provides reasonable on-demand lubrication schemes for wind turbines in different operating conditions. The on-demand injection of lubricant prevents under- or over-lubrication, reduces the rate of mechanical failure, and extends the service life of wind turbines. Suffice it to say that the proposed control strategy can lower power generation cost and save energy, making wind turbines more profitable.
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Riis, S. M. "STEAM TURBINE LUBRICATION." Journal of the American Society for Naval Engineers 42, no. 3 (March 18, 2009): 475–79. http://dx.doi.org/10.1111/j.1559-3584.1930.tb05736.x.

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Pratama, Edward Rangga, and Alaya Fadllu Hadi Mukhammad. "Bearing Failure Analysis on Gearbox Forced Draft Fan at LNG Plant." Indonesian Journal of Science and Technology 3, no. 2 (August 30, 2018): 124. http://dx.doi.org/10.17509/ijost.v3i2.12756.

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Boilers Forced Draft Fan has a gearbox reducer to reduce speed from steam turbine as a driver and fan as the driven. Based on Predictive Maintenance Group at Machinery and Heavy Equipment Section, it was found that gearbox has high vibration and noise when boilers load on 195 Ton/Hr (Max Load 295 Ton/hr). Vibration Analysis indicates that the source of vibration comes from bearings with peak value 0.572 in/sec at gearbox high speed outboard vertical and 0.593 in/sec at gearbox high speed outboard horizontal (Max Allowance 0.50 in/sec). Lubrication analysis using X-ray Flourescence method, to see wear particle on lubricating oil showed that Tin(Sn) content is very high 203.62 mg/L (maximum allowance for Tin(Sn) at gearbox is 20mg/L), but wear debris are not found in lubricating oil. Gearbox disassembly found that high speed and low speed bearings suffered severe corrosion. Corrosion at bearings are caused by water contamination on lubrication oil, it comes from steam leak due to carbon ring failure at steam turbine which is steam turbine bearing lubrication and gearbox lubrication get into one lubrication system. After Bearings replaced with a new one, vibration analysis shown improved vibration conditions 0.084 in/sec at gearbox high speed outboard vertical and 0.066 in/sec at gearbox high speed outboard horizontal. In conclucion, high vibration and noise at gearbox reducer were caused by bearings failure due to severe corrosion, and water contamination on lubrication oil for gearbox due to carbon ring failure on steam turbine.
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Zhang, Hai Bo, and Liang Liu. "How to Improve the Reliability of Wind Turbines." Applied Mechanics and Materials 58-60 (June 2011): 771–75. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.771.

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According to the failure of wind turbines in operation, the failure cause and phenomenon of wind turbines is analyzed, combined with the reliability of wind turbine subsystems, measures aiming at cooperation parts and purchased parts are proposed, the reliability of the whole wind turbines is improved in a certain extent. At the same time, condition monitoring system can carry through the early detecting and diagnosing to potential component failure maintain. Besides, automatic lubrication system can realize accurate and timeliness lubrication, also can reduce maintenance workload, preserve correct lubrication and smooth running of all parts.
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Wei, M., JE Dyson, and BW Darvell. "Factors Affecting Dental Air-Turbine Handpiece Bearing Failure." Operative Dentistry 37, no. 4 (July 1, 2012): E1—E12. http://dx.doi.org/10.2341/11-087-l.

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SUMMARY Objectives To investigate the influence of various factors on air-turbine handpiece bearing failure through developing standard protocols for testing the bearing longevity. Methods Groups of four air-turbine assemblies (Synea TA-98, W&H, Dentalwerk, Bürmoos, Austria) were subjected repeatedly to a full binary combinatorial set of operating conditions: with and without lubrication, simulated clinical loading, and corrosion protection, all with autoclaving, to the point of failure. A control set was lubricated only. Lubrication (Assistina, W&H), autoclaving (ST-Im30b, Eschmann Bros & Walsh, West Sussex, England), simulated clinical loading (0.56 N at 45° to the turbine axis, after autoclaving), and corrosion protection during autoclaving (magnesium sacrificial anode) were used as required. Free-running speed (Hz) and bearing resistance (μNm) were determined (Darvell-Dyson testing machine) at baseline and after every 10 cycles until turbine failure. Three-way analysis of variance (lubrication × loading × corrosion protection) of log(cycles to failure), with α = 0.05, was used. Results All autoclaved turbines had failed by 560 cycles, while the controls failed at 960-1000 cycles. All three main effects were significant: loading (p<10−6), lubrication (p<0.0002), and corrosion protection (p<0.02), as was the interaction lubrication × loading (p<10−6). No other interaction attained significance. Conclusions Running under load was the most important factor affecting bearing longevity. While autoclaving clearly has a detrimental effect, lubrication effectively increases longevity. A sacrificial anode may be economically worthwhile to extend life further, but low-load usage patterns, as generally instructed, are confirmed as beneficial.
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Zuo, Yu Yu. "Gas Turbine Engines Lubrication System Design." Advanced Materials Research 900 (February 2014): 773–76. http://dx.doi.org/10.4028/www.scientific.net/amr.900.773.

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There are many reasons for having a lubricant within the engine besides that of reducing friction. However scrupulously clean the engine is maintained, there will always be a small amount of dirt or impurities that find their way inside. That dirt must be removed before it can cause damage to bearings or block small oil passageways. The oil can be used to keep the engine clean by carrying dirt to the oil filter where it is strained out and where it remains until replacement of the filter. The majority of the bearings within the engine are manufactured from steel, a metal which would soon oxidize itself if it were not prevented from doing so by a liberal coating of oil, thus the lubricant will also minimise corrosion inside the engine.
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Bromley., C. H. "NOTES ON TURBINE BEARINGS AND THEIR LUBRICATION." Journal of the American Society for Naval Engineers 30, no. 3 (March 18, 2009): 616–19. http://dx.doi.org/10.1111/j.1559-3584.1918.tb04823.x.

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Griffiths, C. A. "DISCUSSION OF THE PAPER-“STEAM TURBINE LUBRICATION”." Journal of the American Society for Naval Engineers 42, no. 3 (March 18, 2009): 480–83. http://dx.doi.org/10.1111/j.1559-3584.1930.tb05737.x.

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Pratiwi, Monika Audiya, Muhammad Ikhsan, Rio Duzan Octavianto, Abdul Hamid, and Subekti Subekti. "DYNAMIC CHARACTERIZATION OF BALL BEARING IN TURBINE PROPELLER USING BUMP TEST METHOD." SINERGI 25, no. 2 (February 5, 2021): 135. http://dx.doi.org/10.22441/sinergi.2021.2.004.

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Bearing is an essential component in a mechanical rotating equipment system. It is no less important than lubrication to prevent wear is very important to consider in the mechanical maintenance system of rotating equipment. Bearing wear is one of the problems in wind turbines that will increase maintenance costs, shorten the wind turbines' lifespan, and cause the component or overall damage to the wind turbine. The latest technology has provided instruments for analyzing the damage of elements in a bearing according to the caused vibrations. Therefore, this study was performed on Ball Bearing Turbine Propeller to identify the dynamic characteristics of Ball Bearing with and without lubrication. The test was carried out using the Bump Test method applied in three measured parts: X, Y, and Z axes. The measuring instrument which was used was Fast Fourier Transform (FFT) Analyzer (Ono Sokki) and the data were analyzed using MATLAB. It was identified that the application of oil could reduce the amplitude and decrease the frequency. Personal frequency appearing more than once indicates the existence of global vibration modes. The frequency which only appears once in the measurement spot indicates local vibration modes. The highest frequency both after and before the application of oil was found in the Y-axis.
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Raykovskiy, N. A., V. L. Yusha, A. V. Tretyakov, and V. A. Zakharov. "Theoretical Estimation of Thermal Deformations of Non-Lubricated Bearings of Low-Flow Turbocharger Units." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (715) (October 2019): 58–69. http://dx.doi.org/10.18698/0536-1044-2019-10-58-69.

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When designing turbocharger units (microturbines) working with high-temperature flows, it is possible to completely abandon lubrication system and use self-lubricating bearings instead. At the same time, it is important to ensure the required temperature regimes and permissible temperature deformations. Currently, there are no calculation methods that could be used to determine the temperature fields and temperature deformations of the ‘rotor — self-lubrication bearings’ system. The paper proposes a numerical method for calculating bearing assemblies, which takes into account the mutual influence of the operating modes of the turbine unit and the bearing cooling system. The proposed method is tested, and the results of the analysis of temperatures and temperature deformations are presented.
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Dissertations / Theses on the topic "Turbine Lubrication"

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Bandari, Ali, and Vivek Vasudevan. "A model to improve the Wind Turbine Gearbox Lubrication system: System architecture and contractual process :." Thesis, Linnéuniversitetet, Institutionen för teknik, TEK, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-22252.

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Wind energy accounts for 9.1% of the total energy capacity in Europe. Recent studies have raised critical questions regarding the dependability of current wind turbines. The statistical data reveals that gear box is the most critical component reducing dependability caused by increased failure rate, downtime, and high repair cost (J. Ribrant and L. Bertling, 2007). Gear box failures in wind farms reveal a staggering 19.4 % of downtime of operation (J. Ribrant and L. Bertling, 2007). A significant reduction in the failure rate has been observed in the recent years, but downtime of operation and high repair investment still remains a bottleneck. Wear is the most critical failure mode and a number of theories have been proposed in order to understand the system behavior of wear mechanism. The empirical and historical incident data shows that the lubrication system has the largest share of contribution of gearbox failures and wear rate. On other hand, a number of commercial lubrication system have developed to cope with wear mechanism, however, these systems have different capabilities and characteristics and needed to be assessed in a new life cycle perspective. The purpose of the thesis is to analyze the influence of lubrication system on the current problem of wear in Wind Turbine Gearbox and improve the existing lubrication system architecture. The research methodology adopted is System Engineering approach with architecture assessment tools. The expected result of the thesis is effective and efficient wind turbine gearbox lubrication system architecture and an efficient contractual process between lubrication system provider and purchaser.
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Leung, P. S. "An investigation of the dynamic behaviour of floating ring bearing systems and their application to turbogenerators." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384577.

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Pong, Sze-ming. "Aspects of dental air turbine handpiece lubricants and sterilization." Click to view the E-thesis via HKUTO, 1998. http://sunzi.lib.hku.hk/HKUTO/record/B38628351.

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龐思明 and Sze-ming Pong. "Aspects of dental air turbine handpiece lubricants and sterilization." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B38628351.

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Farré, Lladós Josep. "Novel lubrication system to improve the excessive wear in wind turbine yaw and pitch gears." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/401832.

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Manufacturers of wind turbines have observed a new phenomenon that appears in high power wind turbines: excessive wear in the teeth located at 0º in the pitch bearing. In order to design more efficient wind turbines, manufacturers are increasing the rotor diameter to capture more kinetic energy from the wind to generate more energy, therefore the stress in the joints/unions is increased, which leads to the elastic deformation of the system. These stresses and deformations increase in all parts of the wind turbine, the foundations and the tower, yaw, nacelle, drive train and blade unions. All these cases are mainly static unions, except the drive train that transmits torque, the yaw system that turns the nacelle and the pitch system that turns each blade around its axis. The weight of the blades under movement, always working in the most efficient position, causes micro-movements allowed by the elastic deformations and the backlash of the gear transmission that induce an excessive wear at the zero degree position. The same phenomenon is observed in the yaw system, though to a lesser extent. Despite the manufacturer's efforts, a solution that could be implemented in the near future or easily retrofitted in the wind turbines does not yet exist. The aim of this PhD project is to improve the lubrication of the pitch and yaw gear systems of wind turbines through the use of a novel lubrication system based on an array of micro-fabricated channels fitted at the gears' root (dedendum). A micro-nozzle to continuously inject fresh grease in between the teeth in contact has been designed, manufactured and installed in a test bench of a 2 MW wind turbine pitch system. The test bench has been used to characterize the fatigue behavior of the gear surface using conventional wind turbine greases under real cyclic loads, showing a delay of 2x10^4 cycles in the appearance of wear. The proposed micro-nozzle is expected to be compatible with and easily implemented into both newly designed and in-market models. This novel lubrication system will inject fresh lubricant to the gear contact area even when the wind turbine is generating electricity.
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Hamilton, Andrew. "Development of novel gearbox lubrication condition monitoring sensors in the context of wind turbine gearboxes." Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25910.

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Wind power has become established as an alternative power source that forms a significant proportion of national energy generation. An increasing proportion of turbines is being constructed offshore to exploit higher average wind speeds and to avoid development issues associated with onshore wind farms. Isolated locations and unpredictable weather conditions lead to increased access costs for operators when conducting scheduled and unscheduled maintenance and repairs. This has increased interest in condition monitoring systems which can track the current state of components within a wind turbine and provide operators with predicted future trends. Asset management can be improved through condition based maintenance regimes and preventative repairs. Development of novel condition monitoring systems that can accurately predict incipient damage can optimise operational performance and reduce the overall level of wind turbine generation costs. The work described in this thesis presents the development of novel sensors that may be applied to monitor wind turbine gearboxes, a component that experiences relatively high failure rates and causes considerable turbine downtime. Current systems and technology that may be adapted for use in wind turbine condition monitoring are evaluated. Lubrication related monitoring systems have been identified as an area that could be improved and are divided into those that track liberated wear material suspended in the lubricant and those that assess the state of the lubricant itself. This study presents two novel lubrication based gearbox monitoring sensors that potentially offer a low cost solution for continuous data capture. The first demonstrates the potential for active pixel sensors such as those found in digital cameras to capture images of wear particles within gearbox lubricants. Particle morphology was tracked in this system, allowing the type of particles to be correlated with the type of wear that is generated and a potential source. The second sensor uses a targeted form of infra-red absorption spectroscopy to track changes in the lubricant chemistry due to the increase in acidity. Ensuring the lubricant is functioning correctly decreases component stress and fatigue, reducing maintenance requirements.
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Hehir, Ryan Thomas. "A CFD Investigation of the Two Phase Flow Regimes Inside the Bearing Chamber and De-aerator of a Jet Engine." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/73386.

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In a jet engine air and oil are mixed during removal from the bearing chamber. Before the oil can be recycled back into the system it must be separated from the air. This is accomplished through use of a de-aerator and breather. The oil air mixture enters the de-aerator first. The de-aerator is a vertical cylinder in which the air and oil enter from the top of the system. Gravity then pulls the oil down as it circulates along the outer wall of the de-aerator. The air is forced out through a top hole and sent to the breather where any oil droplets which remain are furthered separated. A pedestal is located near the bottom of the de-aerator. The pedestal creates a gap between itself and the de-aerator wall. Ideally this gap should be large enough to allow oil to flow through the gap without pooling on the pedestal, but small enough so that air does not flow through the gap. The oil will pool up on the pedestal and reduce the efficiency of the system. In this research, a 30° conical pedestal with a gap of 10.7% was tested. The results showed that the pedestal gap of 10.7% is too large and allows air to flow through the gap. The maximum water was 8.5% and the average water thickness was 5.11%. After studying both the previous experimental data and current CFD data, it is recommended further testing be conducted on pedestal gaps between 8.5% and 9.5%.
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Strömbergsson, Daniel. "Condition monitoring of wind turbine drivetrains using wavelet analysis." Licentiate thesis, Luleå tekniska universitet, Maskinelement, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67337.

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Dhakal, Nayan. "Tribology of newly developed EAL versus water in hydropower turbine bearings." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76864.

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The increasing demand for more readily bio-degradable, renewable and non-toxic environmentally adaptive lubricants with a lower degree of bioaccumulation has escalated the investigation of water-based lubricants as the potential alternatives for conventional mineral-based oils. Water is an excellent environmentally adapted lubricant; however, it is a low viscous fluid and holds downsides of having corrosive nature and extremely low pressure-viscosity coefficient leading to insufficient load-carrying capacity. These shortcomings make pure water a poor choice for operations involving high load and low speed, for instance, within hydropower applications. Therefore, the choice of appropriate modifiers and additives is crucial to improve the viscosity, friction-reducing performance and anti-wear properties of water as a base lubricant. Appropriate selection and combination of bearing materials also significantly improve the tribological performance of the lubricants. In the presented work, tribological behavior of polyvinylpyrrolidone (PVP) and poly(sodium 4-styrenesulfonate) (PSS) thickening agents with water as a base fluid in the lubrication of pure UHMWPE and SCF reinforced UHMWPE bearing materials has been investigated individually under reciprocating tribometer. The results showed that both PVP and PSS are excellent viscosity modifiers. PVP exhibited excellent friction-reducing and anti-wear performance, while PSS revealed increased wear rates with an insignificant reduction of friction coefficients. This study aims to explore the potential for using newly developed water-based lubricants in the replacement of traditional mineral-based lubricants for hydropower turbine bearings.
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Goussakov, Alex, and Alin Dumitru Durac. "Tribological characterisation of turbocharger turbine sealing rings in heavy duty diesel engines." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67300.

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This work investigated the wear mechanisms of turbocharger components in heavy duty diesel engines. By understanding the wear mechanisms that are occurring in turbochargers the life time of the turbocharger components can be improved. For better understanding, as to why the components are worn out, an analysis of several turbocharger components and tribological tests were carried out.   The contact surfaces between turbocharger and sealing rings were analysed. Surfaces are analysed by several methods, including chemical composition of the surface. Influence of different parameters such as contact pressure, sliding velocity, temperature, and distance on friction and wear behaviour are established by performing tribological tests. Pin on disc sliding wear tests were carried out at both room temperature and at high temperature of 300˚C. The pin and the disc, that were used during the tribological tests, were made of the same materials that are used in turbocharger components.   Analysis of pins and discs from tribo-tests and turbocharger components (turbine sealing rings and shafts) show abrasive and adhesive wear on the worn surfaces of the components, from both the tribological tests and the turbochargers respectively. An increase of the temperature resulted in a reduced friction due to the formation of oxide layers on the sliding surfaces of pins and discs. In the turbocharger, traces of lubricant between the sliding surfaces was found, in addition to plastic deformations on the worn surfaces of the shafts and adhesive and abrasive wear on both worn surfaces that were in contact with each other. On the other hand, on the worn surfaces of the turbine sealing rings some cracks were observed that were perpendicular to the sliding direction, which indicates presence of a fatigue process. The presence of fatigue cracks is probably due to the way the trucks were operated, the increase and decrease of temperature and pressure in the turbocharger is probably the cause of these cracks.   To minimize the wear mechanisms that occurs in turbocharger components such as sealing rings and shafts, there are some parameters such as contact pressure between the sliding surfaces of the components that can be minimized. By minimizing the contact pressure between the sliding surfaces, the lifetime of turbocharger can be improved. A better surface finishing and geometry of the contacting surfaces can also improve the sealing rings and shafts lifetime. To minimize the relaxation of turbine sealing rings, materials that can better keep the mechanical properties of the sealing rings at high temperatures must be used.
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Books on the topic "Turbine Lubrication"

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Herguth, WR, and TM Warne, eds. Turbine Lubrication in the 21st Century. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2001. http://dx.doi.org/10.1520/stp1407-eb.

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Aerospace Technology Conference & Exposition (1985 Long Beach, Calif.). Aviation gas turbine lubricants: Military and civil aspects ; Aviation fuel and lubricants : performance testing. Warrendale, PA: Society of Automotive Engineers, 1985.

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Peter, Rudling, and Kammenzind Bruce, eds. Zirconium in the nuclear industry: Fourteenth international symposium. West Conshohocken, Pa: ASTM, 2006.

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C, Young William, Roberton Reginald S, and ASTM Committee D-2 on Petroleum Products and Lubricants., eds. Turbine oil monitoring. Philadelphia, PA: ASTM, 1989.

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Turbine Lubrication in the 21st Century (Astm Special Technical Publication// Stp). ASTM International, 2001.

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United States. National Aeronautics and Space Administration., ed. Some composite bearing and seal materials for gas turbine applications: A review. [Washington, DC]: National Aeronautics and Space Administration, 1989.

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Evaluation of PS 212 coatings under boundary lubrication conditions with an ester-based oil to 300⁰C. [Washington, DC]: National Aeronautics and Space Administration, 1995.

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Center, Lewis Research, ed. Modification of the SHABERTH bearing code to incorporate RP-1 and a discussion of the traction model. Washington, D.C: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990.

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Book chapters on the topic "Turbine Lubrication"

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Bock, Wolfgang. "Turbine Oils." In Lubricants and Lubrication, 453–90. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527645565.ch13.

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Quick, Ludger, Greg Livingstone, and Jo Ameye. "Turbine Oils." In Encyclopedia of Lubricants and Lubrication, 2183–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-22647-2_286.

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Mansoux, Jean-Louis, and Gérard Goujon. "Aviation Gas Turbine Oils." In Encyclopedia of Lubricants and Lubrication, 113–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-22647-2_241.

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Dufresne, Peter T. "Thirty-Seven Years of Fleet Operating and Maintenance Experience Using Phosphate Ester Fluids for Bearing Lubrication in Gas-Turbine/Turbo-Compressor Applications." In Fire Resistant Fluids, 93–108. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2014. http://dx.doi.org/10.1520/stp157320130119.

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Bloch, Heinz P., and Kenneth E. Bannister. "Lubricating Steam and Gas Turbines." In Practical Lubrication for Industrial Facilities, 363–78. 3rd edition. | Lilburn, GA : Fairmont Press, Inc., 2016.: River Publishers, 2020. http://dx.doi.org/10.1201/9781003151357-16.

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Chudnovsky, Bella H. "Lubrication of Mechanical Components in Wind Turbines." In Lubrication of Electrical and Mechanical Components in Electric Power Equipment, 55–86. First edition. | Boca Raton, FL : CRC Press/Taylor & Francis Group, [2019]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429243035-3.

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Phillips, W. David, James B. Hannon, and J. W. George Staniewski. "Chapter 16 | Turbine Lubricating Oils and Hydraulic Fluids." In Fuels and Lubricants Handbook: Technology, Properties, Performance, and Testing, 2nd Edition, 581–643. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2019. http://dx.doi.org/10.1520/mnl3720160020.

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Boyce, Meherwan P. "Lubrication." In Gas Turbine Engineering Handbook, 573–88. Elsevier, 2006. http://dx.doi.org/10.1016/b978-075067846-9/50018-3.

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Boyce, Meherwan P. "Lubrication." In Gas Turbine Engineering Handbook, 629–50. Elsevier, 2012. http://dx.doi.org/10.1016/b978-0-12-383842-1.00015-9.

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"Lubrication Systems." In Gas Turbine Propulsion Systems, 161–79. Chichester, UK: John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9781119975489.ch7.

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Conference papers on the topic "Turbine Lubrication"

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Belden, Ronald D. "Lubrication Oil Reservoir Mist Elimination." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-183.

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With emission standards becoming more and more stringent, reducing Lube Oil Reservoir Vent (LOV) mist emissions is receiving increased attention. This paper explores the nature of this oil mist, explains emission standards, describes some of the equipment that has been used in an attempt to control these emissions, and details the use of fiber beds in this application. Fiber beds have been more successful than other approaches at controlling LOV mist because of their ability to exceed emission standards with low pressure drop, minimal maintenance requirements, and guaranteed collection efficiency.
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Farooq, Khalid. "Varnish Removal and Control in Turbine Lubrication Systems." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81173.

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Varnish deposits on metal surfaces in turbine lube system results in a number of adverse operational issues, especially the restriction and sticking of moving mechanical parts such as servo or directional control valves. The oil has limited solvency for the material, hence a typical turbine will have the majority of the material as deposits and a relatively small portion as suspended material in the oil phase in quasi-equilibrium with the deposits. The lube system needs to be cleaned by removing the suspended varnish precursors from the oil phase, which allows the deposits to re-entrain into the oil phase, until the majority of the transferable deposits from internal surfaces are removed and the oil carries no significant amount of the material to have any adverse effect. The methods used for the removal of varnish from turbine lube oil systems include chemical cleaning - flushing, and electrostatic charge induced agglomeration - retention and the adsorption of the oil suspended varnish on an adsorbent medium. The paper discusses an absorption based removal method that utilizes a fibrous medium that has pronounced affinity for the removal and retention of the varnish forming material from the oil and the deposits from surfaces that are in quasi-equilibrium with the varnish precursors in the oil. The filtration medium is composite cellulose with specially formulated, temperature cured binder resins. The absorptive medium that exhibits high structural and chemical integrity has been thoroughly tested on operating turbines, showing reduction in varnish levels from critical range to below normal range in a relatively short time. The experiences with the utilization of the absorptive medium in laboratory tests and in two operating turbines are presented.
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Zeng, Qin, Hai-Tang Cen, Wei Ma, and Tian-Fang Zhang. "Design of Adaptive Lubrication System for Wind Turbine." In 2019 2nd World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM). IEEE, 2019. http://dx.doi.org/10.1109/wcmeim48965.2019.00057.

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4

Wagner, Matthew J., Nelson H. Forster, Kenneth W. Van Treuren, and David T. Gerardi. "Vapor Phase Lubrication for Expendable Gas Turbine Engines." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-028.

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Vapor Phase Lubrication (VPL) is an emerging technology that is currently targeted for application in limited life, expendable engines. It has the potential to cut 90% of the cost and weight of the lubrication system, when compared to a conventional liquid lubricated system. VPL is effective at much higher temperatures than conventional liquid lubrication (600°C vs. 200°C), so considerably less cooling for the bearing is required, to the extent that the bearing materials often dictate the maximum upper temperature for its use. The hot #8 bearing and the cold #1 bearing of the T63 engine were used to evaluate the applicability of this technology to the expendable engine environment. The #8 bearing was a custom made hybrid with T15 steel races, silicon nitride balls, and a carbon-carbon composite cage; it was run for 10.7 hours at a race temperature of 450°C at full power, without incident. Prior to engine tests, a bearing rig test of the #8 bearing demonstrated an 18.6-hour life at a race temperature of 500°C at engine full power speed of 50,000 rpm. Cold bearing performance was tested with the standard #1 bearing, which consisted of 52100 steel races and bails, and a bronze cage; it was run for 7.5 hours at a race temperature of 34°C at flight idle power, without incident. A self-contained lubricant misting system, running off compressor bleed air, provided lubricant at flow rates of 7–25 ml/hr, depending on engine operating conditions. These tests have demonstrated for the first time, that a single self-contained VPL system can provide adequate lubrication to both the hot and cold bearings for the required life of an expendable cruise missile engine.
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Ramachandran, Dhinagaran, Seran Krishnamoorthy, Ramesh Kannan, and Saravanan Boolingam. "Oil Flow Simulations in the Lubrication System of a Turbocharger." In ASME 2017 Gas Turbine India Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gtindia2017-4816.

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Oil sealing in a turbocharger is a key design challenge. Under certain engine operating conditions oil in the lubrication system is likely to enter the compressor or turbine wheel crossing the piston rings which are used to arrest the undesirable oil flow. Compressor side oil leakage can cause white smoke and particulate emissions. Limited experimental and analytical methods are available to aid the designers in developing the oil flow path. The oil flow path has dimensions of the order of a few microns in certain areas and in mm in other areas. In addition, the flow is comprised of oil and exhaust gas mixture in certain regions. The combined effects of disparate geometric length scales and two-phase flow adds to the complexity of the flow. Understanding the oil flow allows the designer to correctly size the components, flow path and also specify the appropriate clearances between for instance shaft and bearing journals. In this study a Computational Fluid Dynamics (CFD) Model has been built and validated through several experiments conducted particularly to check the oil leak through the piston rings. The study shows that CFD based models can predict within engineering accuracy the flow through leakages in a turbocharger. The importance of manufacturing tolerances on the leakages is also highlighted.
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Simma, Fred Y., Russell J. Chetwynd, and Stuart A. Rowe. "Turbine Generator Lubrication Oil Supply Reliability Improvements at Southern California Edison’s San Onofre Nuclear Generating Station." In ASME 2005 Power Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pwr2005-50149.

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San Onofre Nuclear Generating Station, SONGS, Unit 3 experienced substantial turbine damage in early 2001 after the turbine bearings lubrication oil supply failed. During a loss of off-site power incident, power was lost to the two AC powered turbine lubrication oil pumps due to a breaker failure in the switchgear and the DC powered emergency bearing lubricating oil pump failed to start due to a breaker trip. The SONGS turbine generators have no shaft driven bearing lubricating oil pumps and consequently the turbine generator coasted down from full speed to a full stop without lubricating oil. This resulted in significant bearing, journal and steam path damage that required a four-month duration repair outage during a time period where electricity was in short supply in the State of California. The generator hydrogen sealing system remained operable during this event, however it was discovered during the event follow up investigation that this system had vulnerabilities to failure similar to the bearing lubrication system. In order to prevent a reoccurrence of this extremely costly event, SONGS has taken actions to modify both of these critical turbine generator systems by adding additional, continuously operating pumps with new, independent power source and independently routed cables. The main challenge was to integrate the additional equipment into the existing lubrication and seal oil systems. The SONGS approach and findings are discussed as well as a summary of the work performed. This technical paper will be of interest to utilities with a need to improve turbine generator reliability issues.
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Van Treuren, Kenneth W., D. Neal Barlow, William H. Heiser, Matthew J. Wagner, and Nelson H. Forster. "Investigation of Vapor-Phase Lubrication in a Gas Turbine Engine." In ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-gt-003.

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The liquid oil lubrication system of current aircraft jet engines accounts for approximately 10–15% of the total weight of the engine. It has long been a goal of the aircraft gas turbine industry to reduce this weight. Vapor-Phase Lubrication (VPL) is a promising technology to eliminate liquid oil lubrication. The current investigation resulted in the first gas turbine to operate in the absence of conventional liquid lubrication. A phosphate ester, commercially known as DURAD 620B, was chosen for the test. Extensive research at Wright Laboratory demonstrated that this lubricant could reliably lubricate railing element bearings in the gas turbine engine environment. The Allison T63 engine was selected as the test vehicle because of its small size and bearing configuration. Specifically, VPL was evaluated in the number eight bearing because it is located in a relatively hot environment, in line with the combustor discharge, and it can be isolated from the other bearings and the liquid lubrication system. The bearing was fully instrumented and its performance with standard oil lubrication was documented. Results of this baseline study were used to develop a thermodynamic model to predict the bearing temperature with VPL. The engine was then operated at a ground idle condition with VPL with the lubricant misted into the #8 bearing at 13 ml/hr. The bearing temperature stabilized at 283°C within 10 minutes. Engine operation was continued successfully for a total of one hour. No abnormal wear of the rolling contact surfaces was found when the bearing was later examined. Bearing temperatures after engine shutdown indicated the bearing had reached thermodynamic equilibrium with its surroundings during the test. After shutdown bearing temperatures steadily decreased without the soakback effect seen after shutdown in standard lubricated bearings. In contrast, the oil lubricated bearing ran at a considerably lower operating temperature (83°C) and was significantly heated by its surroundings after engine shutdown. In the baseline tests, the final bearing temperatures never reached that of the operating VPL system.
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Mahendiran, Prasath, Bommaian Balasubramanian, Muralidhar Manavalan, and Adithya Rao. "A Design Environment for Performance Modeling and Analysis of Aero Engine Lubrication Systems." In ASME 2013 Gas Turbine India Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gtindia2013-3542.

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This paper presents the overview and capability of design Environment for performance modeling and analysis of aero engine lubrication systems. The design environment is implemented as an intuitive and easy to use toolbox implemented within the commercial off-the-shelf (COTS) simulation software environment MATLAB/Simulink®. The toolbox consists of a library of predefined reusable/generic lubrication system components like flow resistance elements, pumps and orifice. The component behavior is modeled mathematically using first principles and component characteristics. The developed components have been extensively verified & validated with actual hardware test data covering multiple test points in the flight envelope and also different failure modes of the system. The verification & validation methodology and the results of the component tests, is not the subject of the paper. The aero engine lubrication system is modeled by connecting the components drawn from the library to form a network consisting of nodes and flow paths. The solver implemented computes the unknown pressure and flow values in the lubrication circuit. The design environment has been used to perform steady state performance analysis of aero engine lubrication system. It has additional capability to perform parametric studies, trade studies, design exploration, analyzing simulation results and automated report generation, which will be described in the paper. The flexible software architecture and modular programming techniques has delivered the significant benefit of component models reuse. The generic nature of the toolbox can be exploited to perform system modeling and analysis of any hydraulic system.
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Hussain, Tarique, M. Sivaramakrishna, and S. P. Suresh Kumar. "In-House Development of Gerotor Pump for Lubrication System of a Gas Turbine Engine." In ASME 2015 Gas Turbine India Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gtindia2015-1344.

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In house development of lubrication oil pump of gerotor type used in gas turbine engine is described in this paper. A host of geometrical parameters determine the inner and outer rotor profiles which in turn define the flow characteristics of the pump. In this paper, a simulation model has been developed based on AMESim and MatLab which used to predict the flow characteristics of a pump. This model incorporates both the methodologies of design and parametric analysis of the pump which aids to design the pump in accordance with designer needs by varying the parameters. A gerotor pump is designed having fixed geometrical parameters using this model. The prototype pump has been tested for its flow characteristics and compared with estimated result. The comparison indicates that simulation results agree well with the measured data. Thus, this simulation model will be useful in designing and analyzing the lubrication pump of a gas turbine engine.
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10

Douglas, Laura M. "Development of a Lubrication System for the T800-LHT-800 Turboshaft Engine." In ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-398.

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The T800-LHT-800 is a modern technology 1300 shp (975 kW) class turboshaft engine developed for the U.S. Army’s LH helicopter which has great potential for application in various civil air vehicles. As one of its significant features, the engine has a self-contained dry sump, pressure and temperature regulated, recirculating lubrication system. Contractually specified operational attitude and loss of oil requirements impose considerable complications on the design/development of the T800’s lubrication system. Characteristically, lubrication systems provide cooling and lubrication to all bearings, gears, seal rotors, and working splines at all engine operating conditions. The T800-LHT-800 lubrication system must provide continuous lubrication for an engine operational attitude envelope range of 120 deg noseup, 90 deg nosedown, and 48 deg rolls in either direction. Development of the lubrication system attitude capabilities has been accomplished via testing on a lubrication simulator rig and a series of both development and qualification engine attitude tests. A formal engine attitude qualification test, which will demonstrate both military qualification test (QT) and civil (FAA) certification requirements, will be conducted in 1991. Contractually required engine protection against loss of oil conditions lasting up to six min provided a significant design challenge for the T800 lubrication system and an emergency oil system was designed to meet this requirement. This emergency oil system was developed via multiple design iterations, bench testing on a lubrication simulator rig, and loss of oil development engine testing. As part of the qualification process, a formal qualification loss of oil engine test will be conducted in mid-1991 to verify this design capability. This paper describes the basic T800 engine and discusses the lubrication system requirements. It emphasizes the design evolution of the main oil tank attitude capabilities, the emergency oil system, and the planned qualification/certification testing.
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Reports on the topic "Turbine Lubrication"

1

Lutz, Glenn A., Manfred Jungk, Jonathan J. Bryant, Rebecca S. Lauer, Anthony Chobot, Tyler Mayer, Shane Palmer, and Robert E. Kauffman. Full Life Wind Turbine Gearbox Lubricating Fluids. Office of Scientific and Technical Information (OSTI), February 2012. http://dx.doi.org/10.2172/1041556.

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