Relevant bibliographies by topics / Double suction pumps

Contents

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

Academic literature on the topic 'Double suction pumps'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Double suction pumps.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Double suction pumps"

1

Tao, Ran, Ruofu Xiao, Di Zhu, and Fujun Wang. "Multi-objective optimization of double suction centrifugal pump." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 6 (March 28, 2017): 1108–17. http://dx.doi.org/10.1177/0954406217699020.

Full text
Abstract:
Double suction centrifugal pumps are widely used for water supplying system. In this study, the original design of a double centrifugal pump lacked sufficient head at the design flow rate condition. Therefore, the most important objective was to optimize the design to improve the head. A strategy inspired by “liquid–gas cavitation process” is innovatively used for intelligent global search of better pump designs with both higher head and wider-higher efficiency. This strategy has advantages including flexibility, parallelism, and feasibility on overstepping the local-best. The computational fluid dynamics and artificial neural network are used. It helps this optimization to find unknown points in the non-linear and multi-dimensional searching space, and accelerate the optimization process. Candidates were found after search, and the best one was chosen using Pareto principle. Experimental and numerical studies verify that the optimized impeller meets the requirement of head. The efficiency is also significantly improved with higher best efficiency and wider high efficiency range than original design. The critical cavitation is also improved at design condition. This study provides an effective strategy and a good solution for multi-objective optimization of double suction centrifugal pumps. Moreover, this study provides references for the combination of optimizations with artificial intelligence especially in the pump’s design.
APA, Harvard, Vancouver, ISO, and other styles
2

Liu, Mei Qing, Qiu Wei Li, Yao Hua Bai, Zhi Yong Liu, and Pei Jie He. "Efficiency and Pressure Pulsation Analysis of a Double Suction Centrifugal Pump with Different Arrangement Impellers." Advanced Materials Research 433-440 (January 2012): 709–15. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.709.

Full text
Abstract:
Double suction centrifugal pumps are widely employed in large water supply projects. In the present study, a double suction centrifugal pump with the staggered arrangement impeller in a domestic water supply project has been mapping and modeling, and then the symmetrical arrangement impeller of a double suction centrifugal pump has been designed for comparison. The commercial code was used to investigate the pump efficiency and the time variation of pressure at the zone of volute tongue. This unsteady flow feature was investigated by the large eddy simulation (LES) method with the sliding mesh technology. The analysis indicated that the pump efficiency of the double suction centrifugal pump with staggered arrangement impeller is lower than that with the symmetrical one. The frequency of pressure pulsation at the volute tongue is consistent with the blade passing frequency. The staggered arrangement impeller can reduce the levels of pressure pulsation significantly.
APA, Harvard, Vancouver, ISO, and other styles
3

Wang, Osman, Pei, Gan, and Yin. "Artificial Neural Networks Approach for a Multi-Objective Cavitation Optimization Design in a Double-Suction Centrifugal Pump." Processes 7, no. 5 (April 27, 2019): 246. http://dx.doi.org/10.3390/pr7050246.

Full text
Abstract:
Double-suction centrifugal pumps are widely used in industrial and agricultural applications since their flow rate is twice that of single-suction pumps with the same impeller diameter. They usually run for longer, which makes them susceptible to cavitation, putting the downstream components at risk. A fast approach to predicting the Net Positive Suction Head required was applied to perform a multi-objective optimization on the double-suction centrifugal pump. An L32 (84) orthogonal array was designed to evaluate 8 geometrical parameters at 4 levels each. A two-layer feedforward neural network and genetic algorithm was applied to solve the multi-objective problem into pareto solutions. The results were validated by numerical simulation and compared to the original design. The suction performance was improved by 7.26%, 3.9%, 4.5% and 3.8% at flow conditions 0.6Qd, 0.8Qd, 1.0Qd and 1.2Qd respectively. The efficiency increased by 1.53% 1.0Qd and 1.1% at 0.8Qd. The streamline on the blade surface was improved and the vapor volume fraction of the optimized impeller was much smaller than that of the original impeller. This study established a fast approach to cavitation optimization and a parametric database for both hub and shroud blade angles for double suction centrifugal pump optimization design.
APA, Harvard, Vancouver, ISO, and other styles
4

Sekino, Yumiko, and Hiroyoshi Watanabe. "Design optimization of double-suction volute pumps." World Pumps 2016, no. 5 (May 2016): 32–35. http://dx.doi.org/10.1016/s0262-1762(16)30101-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Tverdokhleb, Igor, Aleksandr Kostyuk, and Sergey Sokolov. "Influence of Operation Mode on Efficiency and Life Cycle Cost of Double Suction Pump." Applied Mechanics and Materials 630 (September 2014): 147–50. http://dx.doi.org/10.4028/www.scientific.net/amm.630.147.

Full text
Abstract:
The widely known fact that the parameters of many pumps are not correspond to systems characteristics which either changed in time or initially were evaluated incorrectly. In this report the main reasons of pumps operation beyond the operation range are presented. Influence of such operation on Life cycle cost. The real cases of inefficient and unreliable pump operation are presented in report. Also the results of retrofitting of pump station are presented.
APA, Harvard, Vancouver, ISO, and other styles
6

Kadhim, Ali Fakhri, and Hayder A. Al Thamiry. "Numerical Simulation to Investigate the Occurrence of Vortices at Double Vertical Pumps Intakes." Association of Arab Universities Journal of Engineering Sciences 28, no. 1 (March 31, 2021): 01–06. http://dx.doi.org/10.33261/jaaru.2021.28.1.001.

Full text
Abstract:
The pumping station is widely used in our modern life. The occurrence of the vortex at pumpsump, which is causing air entering pipe intake, is a common problem in the design of pumps. Thisphenomenon, including surface and sub-surface vortex, may lead to damage to the pumping structure, highpower consumption, and loss in pump performance. In some requirements, the multiple suction pipes areusing to get the required flow. Due to this arrangement, the performance of the suction pipes will influence.This paper is aimed to investigate the occurrence of vortices around the flow pattern of two pumps by usingComputational Fluid Dynamic (CFD) code Fluent. This CFD model is based on solving Navier-Stockequations by finite volume method. The model of double suction pipes was investigated under five differentsubmergence depth (S) and five different suction velocities (v). The SST k-ω turbulence model was selectedfor the turbulence. The results showed that the air entering vortex does not appear when the submergencedepth (S) is equal or greater than 1.5 times from the diameter of the bellmouth for intake pipe (D). Thesurface vortex appeared obviously when the submergence depth (S) equals to 1.25D and the Froude numberat the bell is equal to or greater than 1.028, and appeared clearly when the (S/D=1) and Froude number isequal to or more than 0.77. The nearer attached wall vortex does not appear when the space from the centerof the suction pipe to the sidewall (C) equals 2 times of bell diameter.
APA, Harvard, Vancouver, ISO, and other styles
7

Song, Xijie, Dunzhe Qi, Lijuan Xu, Yubin Shen, Wei Wang, Zhengwei Wang, and Yan Liu. "Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump." Processes 9, no. 9 (August 24, 2021): 1483. http://dx.doi.org/10.3390/pr9091483.

Full text
Abstract:
The double-suction centrifugal pumps installed along the Yellow River in China face serious sediment erosion due to the high sediment content which causes the poor operation efficiency of the pump units. The particle motion characteristics and erosion characteristics in a pump under different flow rates and different particle concentrations were numerically simulated based on the particle track model of solid-liquid two-phase flow. The results show that the flow rate has a significant effect on the particle tracks and the erosion caused by the particles in the impeller. The total erosion rate is positively correlated with the flow rate, and increases with the increase in flow rate. The vortex and secondary flow in the impeller have obvious influence on the particle trajectory, which increases the particle concentration at the trailing edge of the pressure surface and intensifies the impact erosion in this area. The particles carried by the vortex intensifies the local erosion. The particle concentration mainly affects the erosion rate, but has little effect on the erosion position. The influence of flow rate on pump erosion is greater than that of the particle properties. These results provide a reference for optimization of the design of anti-erosion blades of double-suction pumps and the regulation and operation of pumping stations.
APA, Harvard, Vancouver, ISO, and other styles
8

Liu, Wei, and Feng Lan Wang. "S Type Single-Stage Double Suction Centrifugal Pump in Vibration and Shaft Broken Analysis." Applied Mechanics and Materials 685 (October 2014): 228–31. http://dx.doi.org/10.4028/www.scientific.net/amm.685.228.

Full text
Abstract:
This article describes the reasons for vibration and off-axis S-type single-stage double-suction centrifugal pumps,due to the design of the pump itself and the reasons for which the work environment and the work of the pump caused by the vibration,thereby causing the shaft fracture, and other reasons, resulting in breakage of the pump shaft from a comprehensive analysis of the reason for the above problems.
APA, Harvard, Vancouver, ISO, and other styles
9

M.S. Dzhumataev, A.Zh. Bayaliev, and S.T. Solpiev. "TO THE QUESTION OF CREATING A STRUCTURE OF A DOUBLE-PISTON PUMP FOR SUBMITTING SAND-CEMENT MORTAR." Herald of KSUCTA n a N Isanov, no. 3 (September 23, 2019): 404–10. http://dx.doi.org/10.35803/1694-5298.2019.3.404-410.

Full text
Abstract:
This article discusses the issue of creating an import-substituting chopper design for a double-piston pump for supplying sand and cement mortar in order to partially meet the needs of construction organizations of the Kyrgyz Republic for this equipment. The relevance of mastering the production of mortar pumps for the transportation and application of plaster to the surface during the finishing works, pumping solutions into various cavities during construction, repair of buildings and drilling wells plugging is indicated. A review and analysis of the existing mortar pumps was carried out, the qualifications of the mortar pumps by the method of action of the displacer on the pumped solution, in the direction of solution movement in the working chamber during suction were given. The principle of operation is shown and the advantages and disadvantages are noted. Specified prevailing mortar pumps are indicated.
APA, Harvard, Vancouver, ISO, and other styles
10

Jin, Faye, Zhifeng Yao, Duanming Li, Ruofu Xiao, Fujun Wang, and Chenglian He. "Experimental Investigation of Transient Characteristics of a Double Suction Centrifugal Pump System during Starting Period." Energies 12, no. 21 (October 30, 2019): 4135. http://dx.doi.org/10.3390/en12214135.

Full text
Abstract:
The starting phase for pumps in water transportation pipelines is crucial and has significant transient characteristics which merit further study in order to evaluate the operational stability of the pumping system. This paper presents the results of a study in which the relative steady operating conditions and starting period of a large double-suction centrifugal pump were monitored in real time, including pressure fluctuations, shaft run-out and vibration at the bearing. The transient characteristics of a double-suction centrifugal pump under different operating conditions have been analyzed using fast Fourier transform (FFT) and continuous wavelet transform (CWT). Results indicate broadband frequency components within the spectrum of pressure fluctuations in the volute casing under all test conditions, and the central frequency of the broadband frequency gradually decreases as flow rate increases and approaches the blade frequency, which is the primary reason for an increase in blade-frequency amplitude. This may produce a vibration frequency that is similar to the natural frequency of a certain part of the double-suction centrifugal pump during the starting period, which causes the resonance phenomenon. The radial force is also large during the starting period, which causes eccentric wear of the seal ring at the impeller inlet.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Double suction pumps"

1

Hodkiewicz, Melinda R. "The effect of partial-flow operation on the axial vibration of double-suction centrifugal pumps." University of Western Australia. School of Mechanical Engineering, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0067.

Full text
Abstract:
[Truncated abstract] Centrifugal pumps are designed to operate at a capacity that maximizes the efficiency of the pump. Operation below this design capacity results in reduction of pump efficiency as the geometric configuration of the impeller and casing no longer provide an ideal flow pattern. Consequently there are changes in the flow field within the pump, including flow separation and regions of localized, non-uniform, unsteady flow. This flow interacts with rotating and stationary components inside the pump creating additional disturbance and hydraulic excitation. It is anticipated that the local hydrodynamic and global hydroacoustic excitation due to partial-flow operation will affect the structural vibration measured on the pump. In this study, the effects of partial-flow operation on the vibration signal at the pump bearing housing are measured on a number of industrial double-suction pump units. These are a particular class of centrifugal pump commonly used in high volume applications such as water distribution. The aims are to understand how the vibration signals change at the different operating conditions and to determine which parameters are best suited to monitoring the observed changes. Comparison is made between the response, under similar operating conditions, of pumps both within sets of identical size and design, across sets of similar design and different sizes, and between different designs. The pumps are all in-service industrial units. In double-suction pumps the impeller motion in the axial direction (along the line of the shaft) is not constrained. Due to symmetry in impeller design, axial stability is maintained by equal and opposite hydraulic forces on the two opposing sides of the impeller. The potential for loss of axial hydraulic balance during partial-flow operation is examined from a theoretical perspective, based on a literature review, and by measurement of the axial displacement of the shaft. Structural vibration is measured using accelerometers mounted at the non-drive end bearing housing in the horizontal and axial orientations. Changes in signal contribution and characteristics are examined using a variety of qualitative and quantitative techniques. Test signals are used to assess the limitations of the techniques and the effect of parameter selection on the interpretation of the signals.
APA, Harvard, Vancouver, ISO, and other styles
2

Vacula, Jiří. "Axiální síla a tlakové pulsace v čerpadle s dvoustranným vstupem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230191.

Full text
Abstract:
This diploma thesis deals with axial thrust existence in a double suction pump rotor. Axial thrust appears especially in low flow rates modes. The aim of this work is finding information about this issue and deriving mathematical model of calculation which will be subsequently applied on experimental data received from double suction pump measurement in laboratory. It is important to examine the whole dynamics of axial thrust development and find its cause of formation in measured double suction pump.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Double suction pumps"

1

The 2006-2011 World Outlook for Single-Stage Axially Split Double-Suction Centrifugal Pumps with Discharge of over 8 Inches. Icon Group International, Inc., 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Parker, Philip M. The 2007-2012 World Outlook for Single-Stage Axially Split Double-Suction Centrifugal Pumps with Discharge of over 8 Inches. ICON Group International, Inc., 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

The 2006-2011 World Outlook for Single-Stage Axially Split Double-Suction Centrifugal Pumps with Discharge of 4 Inches or Less. Icon Group International, Inc., 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Parker, Philip M. The 2007-2012 World Outlook for Single-Stage Axially Split Double-Suction Centrifugal Pumps with Discharge of 4 Inches or Less. ICON Group International, Inc., 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Parker, Philip M. The 2007-2012 World Outlook for Single-Stage Radially Split Double-Suction API-610 Compliant Impeller Centrifugal Pumps with Discharge of over 8 Inches. ICON Group International, Inc., 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

The 2006-2011 World Outlook for Single-Stage Radially Split Double-Suction API-610 Compliant Impeller Centrifugal Pumps with Discharge of over 8 Inches. Icon Group International, Inc., 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

The 2006-2011 World Outlook for Single-Stage Radially Split Double-Suction API-610 Compliant Impeller Centrifugal Pumps with Discharge of 4 Inches or Less. Icon Group International, Inc., 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Parker, Philip M. The 2007-2012 World Outlook for Single-Stage Radially Split Double-Suction API-610 Compliant Impeller Centrifugal Pumps with Discharge of 4 Inches or Less. ICON Group International, Inc., 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Parker, Philip M. The 2007-2012 World Outlook for Multi-Stage Single-Or Double-Suction Diffuser-Design Radially Split Case Centrifugal Pumps with Discharge of 4 Inches or Less. ICON Group International, Inc., 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

The 2006-2011 World Outlook for Single-Stage Axially Split Double-Suction Centrifugal Pumps with Discharge of More Than 4 Inches and Up to 8 Inches. Icon Group International, Inc., 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Double suction pumps"

1

Yang, Min, Fujun Wang, and Guohui Cong. "Numerical Simulation of Three Dimensional Turbulent Flow in Double-Suction Centrifugal Pumps." In Computational Mechanics, 242. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75999-7_42.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Mu, Jiegang, Shuihua Zheng, Hongying Deng, Shengchang Zhang, and Huimei Bao. "The Technology Development Analysis of Double Suction Rinsing Centrifugal Pump between Domestic and Abroad." In Challenges of Power Engineering and Environment, 485–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-76694-0_89.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Zhang, Yu, Sanbao Hu, Jinglai Wu, Yunqing Zhang, and Liping Chen. "Modeling and Multi-Objective Optimization of Double Suction Centrifugal Pump Based on Kriging Meta-models." In Springer Proceedings in Mathematics & Statistics, 251–61. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08377-3_25.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lobanoff, Val S., and Robert R. Ross. "Double-Suction Pumps and Side-Suction Design." In Centrifugal Pumps, 77–84. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-08-050085-0.50010-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

"Case History #1 — Double-Suction Centrifugal Pump Suction Problems." In Centrifugal & Rotary Pumps, 103–16. CRC Press, 1999. http://dx.doi.org/10.1201/9781420049725-14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

"Case History #1 — Double-Suction Centrifugal Pump Suction Problems." In Centrifugal & Rotary Pumps. CRC Press, 1999. http://dx.doi.org/10.1201/9781420049725.ch10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"Structural analysis of 800GS80 single-stage double-suction centrifugal pump." In Computing, Control, Information and Education Engineering, 619–22. CRC Press, 2015. http://dx.doi.org/10.1201/b18828-133.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Chu, Xing, Jun Gao, Lin Wang, Wang Yao, and Jia Wang. "Fluid simulation analysis of 800GS80 single-stage double-suction centrifugal pump." In Architectural, Energy and Information Engineering, 351–54. CRC Press, 2015. http://dx.doi.org/10.1201/b19197-81.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Yuan, Wen, Changbin Wang, Kai Zhang, and Xi Chen. "Analysis of internal flow field of OTS 125–500A low flow rate double-suction centrifugal pump." In Energy Science and Applied Technology, 173–77. CRC Press, 2015. http://dx.doi.org/10.1201/b19779-42.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Double suction pumps"

1

Li, Qian-qian, and Da-zhuan Wu. "Study on the Reduction of Pressure Fluctuation for a Double-Suction Centrifugal Pump With Staggered Blades." In ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fedsm2018-83118.

Full text
Abstract:
Due to the distinctive characteristic of massive flow rates, double-suction centrifugal pump has been extensively applied in lots of perspectives, such as drainage, irrigation, transportation projects and other hydraulic engineering realms. Nevertheless, the significance of the pressure fluctuation inside the double-suction centrifugal pump, which is getting more and more prominent under the soaring demands for low noise and comfortable living environment, could not be underestimated. Consequently, how to reduce the pressure fluctuation as far as possible and enhance the running stability of the pump is always the research hotspot. In this study, the double-suction centrifugal impeller with abominable vibration performance is redesigned to improve the internal flow and reduce the flow-induced noise. What’s addition, the two redesigned impellers wearing splitter blades were compared in staggered arrangement with different angles for the purpose of ulteriorly decreasing the pressure fluctuation. On the basis of Realizable k-ε model and SIMPLEC algorithm, the unsteady Reynolds-averaged Navier-Stokes equations (URANS) were resolved by means of CFD simulation and the flow performance and the vibration performance were validated with the experiments. The results illustrate that the redesigned impeller with multi-blade could raise the hydraulic performance and reduce the pressure fluctuation inside the pump. When the impeller of each side was laid with the staggered angle of 12 degrees, the pressure distribution tended to be more uniform and the pressure fluctuation was well ameliorated. Through the pressure fluctuation analysis in time domain and frequency domain, the pressure change inside the pumps could be evaluated quantitatively and accurately, hence different pumps could be contrasted in detail. The consequences of this paper could provide reference for pressure fluctuation reduction and vibration performance reinforcement of double-suction centrifugal pumps as well as other vane pumps.
APA, Harvard, Vancouver, ISO, and other styles
2

Li, Hong, Zhenhua Shen, Liujin Ji, Jianping Yuan, and Shouqi Yuan. "Research on Hydraulic Structure of Low Pressure Pulsations Double-Suction Pumps Based on Unsteady Flow Numerical Simulation." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78078.

Full text
Abstract:
Low pressure pulsations double-suction pumps, which can reduce the pump outlet pressure pulsations, are widely used in paper-making technique processes. To design the proper geometric sizes and improve the inner flow will reduce the outlet pressure pulsations. From the aspect of the pump hydraulic design, several optimized projects to lower the pressure pulsations are proposed, such as optimizing the arrangement of blades, changing the shape of the blades, changing the size of base circle and the shape of tongue of the volute, etc. The unsteady flows in different time and different impeller positions in every project have been simulated using the CFD software. The outlet pressure distribution is caught and described as the 2-D graphs of pressure pulsations versus time by EXCEL and MATLAB. By comparing the results of all optimized schemes, it has been shown that the stagger arrangement of blades, the increased diameter of base circle, the ladder tongue of volute, more blades of impeller all can reduce the outlet pressure pulsations of centrifugal pump.
APA, Harvard, Vancouver, ISO, and other styles
3

Yao, Zhifeng, Fujun Wang, Ruofu Xiao, Chenglian He, and Zhuqing Liu. "Experimental Investigation of Relationship Between Pressure Fluctuations and Vibrations for a Double Suction Centrifugal Pump." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-06014.

Full text
Abstract:
Double-suction centrifugal pumps are widely employed in large-scale pumping stations, which generally run in the conditions of large discharge with huge energy consumption. Pressure fluctuation caused by internal flow due to tongue-impeller interaction is the primary source of pump vibration. In this paper, pressure fluctuations and vibrations signals on volute casing wall were experimentally obtained at five flow rates ranging from 59% to 121% of nominal flow rate. Time and frequency domains of the signals were mainly analyzed by using statistical and fast Fourier transform methods. The results show that rotational frequency, blade passing frequency and their harmonic frequencies of pressure fluctuations as well as vibrations are clearly identified. The magnitude at blade passing frequency has close relationship with the measurement location related to the volute tongue, and becomes larger when the flow rate deviates from the nominal flow rate. The magnitudes at blade passing frequency can increase by 70% and 151% at high flow rate over that at the nominal flow rate for pressure fluctuations and vibrations, respectively. While the magnitude of vibration at rotational frequency keeps nearly constant at partial flow rate, and decreases at high flow rate.
APA, Harvard, Vancouver, ISO, and other styles
4

Rocco, Giuseppe, Bruno Schiavello, Davide Pirola, and Giancarlo Cicatelli. "CFD Analysis and Experimental Comparison of a Large Centrifugal Pump." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69532.

Full text
Abstract:
The design of a large size centrifugal pump with conflictual requirements from customized specifications is a hard engineering challenge. Centrifugal pumps are the most commonly used in different industrial fields like power generation, oil & gas, chemical plants, desalination, pipeline, water treatment, agriculture, automotive, aerospace, and domestic applications. On the other hand, centrifugal pumps are a very complex type of turbomachines in which mechanical energy is converted into pressure energy by means of blades action and angular momentum change. To design and develop a centrifugal pump, it is very important to have a long experience and ability to predict the final performance with good accuracy. The design can be very complex because the flow in a centrifugal pump is a very complex turbulent, three dimensional and time-dependent flows. The primary purpose of this paper is to show a comparison between numerical analysis performed by means of a commercial code and the experimental results obtained during the testing phase of a very large in-line centrifugal pump, including suction casing - double suction impeller - double volute - discharge branch diffuser. The key focus will be in the comparison between test measurements and numerical results in term of overall performance (head, power and efficiency) as verification and validation of the CFD simulation for future applications.
APA, Harvard, Vancouver, ISO, and other styles
5

Wang, Yiyun, Ji Pei, Shouqi Yuan, and Wenjie Wang. "Effect of Baffles in Between Stages on Performance and Flow Characteristics of a Two-Stage Split Case Centrifugal Pump." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69121.

Full text
Abstract:
Two-stage split case centrifugal pumps play an important role in large flow rate and high lift water transfer situations. To investigate the influence of baffles in between stages on the performance and internal flow characteristics, the unsteady simulations for the prototype pump were carried out by solving the three-dimensional Reynolds-averaged Navier-Stokes equations with a shear stress transport (SST) turbulence model. The structured grids were generated for the whole flow passage. The calculated performance results were verified by the experimental measurements. The entropy production method based on numerical simulation was applied to analyze the distribution and mechanism of flow losses. The results show that the turbulence dissipation is the dominant flow loss, and the viscous dissipation can be neglected. The baffles can reduce the turbulence dissipation power obviously and can improve the hydraulic efficiency by maximum 5%, especially under QBEP and over-load conditions. The baffles have the greatest effect on the hydraulic losses in the double suction impeller., because they change the flow characteristics in the channels between the first stage impeller and the double suction impeller, affecting the inflow condition dramatically for the impeller. The study can give a reference to optimize the design of the two-stage split case centrifugal pump for high efficiency.
APA, Harvard, Vancouver, ISO, and other styles
6

Braun, Olivier, Francois Avellan, and Philippe Dupont. "Unsteady Numerical Simulations of the Flow Related to the Unstable Energy-Discharge Characteristic of a Medium Specific Speed Double Suction Pump." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37550.

Full text
Abstract:
Regions of positive slope in the pressure-discharge characteristics can result in a reduction or even lack of damping of system instabilities. They are therefore one of the major concerns in design and operation of centrifugal pumps as they are limiting the admissible operating range. The considered preliminary hydraulic design of an industrial double suction pump of medium specific speed ν = 0.410 (0.205 per impeller side) shows a marked saddle in the energy-discharge characteristic associated to a sudden drop of efficiency versus discharge at part load. Unsteady RANS type flow simulations are performed using hexahedral meshes with 2.5 million nodes to model the inlet casing, the shrouded double sided impeller with 2 × 7 blades, the diffuser with 12 blades and the volute. In unsteady solution monitoring, low frequency (below blade passing frequencies) phenomena are noticed. Therefore, simulation times of up to 10 impeller revolutions at each flow rate are requested to achieve statistically steady behavior of the flow judged on global performance numbers and circumferential flow rate distribution. The numerical simulations emphasize a drop in the characteristic, though at a lower flow rate than found on the test rig. It is shown to be associated to a one-sided separation in the diffuser, further leading to an unbalanced flow rate distribution of about 10% of flow rate between both sides of the impeller. There is a region of hysteresis, where both configurations with balanced and unbalanced flow rate distributions can be obtained for the same global flow rate. The asymmetric flow distribution leads to asymmetric velocity profiles at the impeller-diffuser interface which results in a strongly vortical flow in the diffuser channels, where an important amount of energy is dissipated in regions of increased viscous and turbulent shear.
APA, Harvard, Vancouver, ISO, and other styles
7

Zhou, Guoqiang, Xiongliang Yao, and Liping Sun. "Development of Floating System for Recovery of Lithium From Seawater." In 25th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/omae2006-92187.

Full text
Abstract:
In the study, a floating system for recovery of lithium from seawater was presented. The floating system consists of adsorbent tanks with double hull and double bottom structures. Several key technologies are developed for the system, such as non-return valve, adsorbent tank, swash bulkheads in adsorbent tanks, double hull structures with inlet holes on inner bottom and ballast tanks in side hulls. Seawater flows into double bottom structures from suction holes on the bilge, then flows into the adsorbent tanks through the non-return valves on inner bottom, and passes through the piled adsorbent. Finally seawater is discharged out of the adsorbent tanks from drain holes on the sheer strake by drain pumps. A floating tank integrated with the key technologies was modeled and the model test was carried out at sea. In addition, an economic assessment on the system has been made. The study results demonstrate that the proposed floating system is promising and the system technologies are reliable.
APA, Harvard, Vancouver, ISO, and other styles
8

Wang, Chaoyue, Fujun Wang, and Zhichao Zou. "Comparative Study on Hydraulic Performance of Single-Suction Centrifugal Pump and Double-Suction Centrifugal Pump." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69142.

Full text
Abstract:
In engineering applications, design and manufacture of double-suction impeller are on the basis of single-suction impeller. However, there is a lack of clear view on the differences of hydraulic performance between single-suction centrifugal pump and double-suction centrifugal pump which has the same blades. In this paper, a single-suction centrifugal pump and double-suction centrifugal pump with the same blades are investigated respectively, and their hydraulic performances have been compared in terms of external characteristics, flow pattern, pressure fluctuation and cavitation characteristics. In operating range of 0.6Q0∼1.1Q0, results show that the efficiency of double-suction pump is 4.14% higher than that of single-suction pump stably, and the head of single suction pump is 3.5% higher than that of double-suction pump stably. Single-suction impeller and double-suction impeller have similar jet-wake structure in impeller outlet, but the amplitude of velocity of single suction impeller changes more sharply. In the vicinity of rated condition, the amplitude of pressure fluctuation of double suction pump is about half that of the single suction pump, and the cavitation performance of double suction pump and single suction pump are basically the same. These quantitative results show that pressure fluctuation characteristics and cavitation performance of single-suction pump and double-suction pump with the same blades have little difference in the vicinity of rated condition. Compared with single-suction pump, the head of double-suction pump has declined, while the efficiency has improved remarkably. The research results have significant guidance on excavating the potential of excellent hydraulic models and guiding the design of double-inlet multistage double-suction centrifugal pump.
APA, Harvard, Vancouver, ISO, and other styles
9

Tosin, Stefano, Jens Friedrichs, Andreas Dreiss, Bruno Schiavello, and Kariem Elebiary. "Experimental Investigation of a Counter-Rotating Mixed-Flow Single Stage Pump Under Cavitation Conditions." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-33118.

Full text
Abstract:
The increase in power per unit volume in modern pumps has been driven by manufacturing cost reduction. The first prototype of a new generation of centrifugal pumps has been experimentally and numerically investigated. It presents a particular and novel design characterized by the absence of any stator blade, which has been substituted with a counter-rotating radial impeller. According to an exhaustive literature survey, the usage of a mixed-flow impeller as a front rotor, followed by a radial-flow impeller seems to be a novel approach in pump design. The combination of a high specific speed impeller with a low specific speed counter-rotating diffuser produces flexible adaptability against varying working conditions. It also gives a rise to an increase of pressure coefficient values beyond limits of similar volute envelope. Applying the counter-rotating design principle to a radial pump increases power density, however cavitation-related issues remains a limiting factor. Counter-rotating design also features an additional degree of freedom to the system due to the independency of motor speeds of one another. This aspect improved cavitation inception characteristics especially at overload capacities. Moreover, such an arrangement required building a special test rig in order to accommodate for the double motor configuration. In this study, the NPSH3% -curve and the NPSHic cavitation inception characteristics have been measured. The system dependency on speed ratio variation has been also investigated along with the influence of the speed ration on the cavitation. Results of the cavitation inception visualizations were obtained using an endoscope at front rotor in order to analyze the behaviour of the pump under cavitation conditions. Test results showed two distinct speed ratios where maximum head and best cavitiaiton behavior were achieved. Additionally, results also confirmed that the cavitaion-free range can be optimized by using different speed ratios. A head drop-efficiency curve with variable speed ratios, which have been progressively adjusted for several flow capacities, is developed. This curve highlights the advantage of this new design compared to a conventional pump particularly under off-design conditions. It is clearly evident that delaying head deterioration, due to low inlet available suction energy, is solely attributed to the variable speed ratio of the runners.
APA, Harvard, Vancouver, ISO, and other styles
10

Kobayashi, Katsutoshi, Isao Hagiya, Hideki Akiniwa, Hiroaki Yoda, and Daijirou Senba. "Development of Double Suction Volute Pump for High Efficiency." In ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16345.

Full text
Abstract:
The double suction volute pump consists of three components: a double suction flow path in upstream, an impeller with five blades, and a double volute flow path in downstream. The double suction was designed to improve a flow on the inlet surface of impeller. A significantly high pre-swirl velocity and low pre-swirl velocity were observed in original double suction, however its high pre-swirl velocity was slowed down and its low pre-swirl velocity was speeded up in designed double suction. As a result, the designed double suction had a more uniform velocity distribution on the inlet surface of impeller. The impeller had twenty design parameters and those parameters were optimized by genetic algorithm (GA) to improve the impeller efficiency. A high total pressure loss was observed on the outlet surface of impeller and near the shroud wall of impeller meridian surface. On the other hand, its total pressure loss was decreased in optimized impeller, and the impeller efficiency increased by +0.7[%]. The cross-sectional surfaces, which were defined on a main streamwise curve of double volute, were designed to decrease a total pressure loss occurring inside double volute. In designed double volute, a secondary vortex on the cross-sectional surface was suppressed and a high circumferential velocity was decreased near the tongue and front edge of partition wall. As a result, the total pressure loss was decreased inside designed double volute. The hydraulic pump performance for designed pump, which consisted of the designed double suction, optimized impeller and designed double volute, was predicted by numerical simulation. Efficiencies in double suction, impeller and double volute were increased by 0.6[%], 0.4[%] and 1.1[%] respectively and the total improvement of pump efficiency was 1.9[%]. The designed pump was manufactured and its hydraulic performance was measured by experiment. The numerical results of pump efficiency agreed well with experimental ones. The efficiency of designed pump increased by 2.0[%] compared with that of original pump in experiment.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Double suction pumps' for particular source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography