Relevant bibliographies by topics / Impulse sealing

Contents

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

Academic literature on the topic 'Impulse sealing'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

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Journal articles on the topic "Impulse sealing"

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Shevchenko, S., and O. Shevchenko. "Improvement of Reliability and Ecological Safety of NPP Reactor Coolant Pump Seals." Nuclear and Radiation Safety, no. 4(88) (December 11, 2020): 47–55. http://dx.doi.org/10.32918/nrs.2020.4(88).06.

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The paper presents the analysis of existing designs of NPP reactor coolant pumps (RCP) rotor sealing systems. The most common design solutions of sealing units that provide the necessary tightness, reliability and service life under high pressure, temperature and sliding speeds typical for RCP, as well as trends for their improvement to increase tightness and environmental safety of activities were identified.
 Designs of impulse seals with a self-adjusting clearance are presented as the most promising assemblies for sealing pump shafts with high parameters. A computer model of impulse me
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Antipina, E. S., G. V. Kukinova, and V. M. Antipin. "Impulse Rotors on Sealing Rollers." IOP Conference Series: Materials Science and Engineering 753 (March 7, 2020): 022044. http://dx.doi.org/10.1088/1757-899x/753/2/022044.

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Kuznetsov, Eduard, and Iveta Pandová. "Calculation of the Operational Characteristics of the Impulse Gas-Barrier Face Seal." Management Systems in Production Engineering 31, no. 4 (2023): 411–17. http://dx.doi.org/10.2478/mspe-2023-0046.

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Abstract The problem of reducing leaks along the pump or compressor shaft of pumped liquids and gases into the environment is very urgent. Serious difficulties have to be faced when sealing the shafts of machines that pump aggressive, toxic, explosive and fire-hazardous environments. According to modern occupational safety requirements, such pumps and compressors should use double seals with a barrier medium whose pressure exceeds the sealed one by 0.05-0.2 MPa. Currently, liquid-lubricated double mechanical seals are widely used in chemical production equipment, however, over the last decade
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Kundera, Czeslaw, and Volodymyr Martsynkovskyy. "Proposal to Improve the Design of the Impulse Face Seal." Applied Mechanics and Materials 630 (September 2014): 277–82. http://dx.doi.org/10.4028/www.scientific.net/amm.630.277.

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The paper describes the construction and operating principle of the non-contacting impulse face seal. A mathematical model of the impulse seal was formulated. The method of control of the opening force by change of the cavity volume within sealing gap was described. The results obtained from the numerical calculations prove that the effect of the cavity volume on the axial vibrations of the flexibly mounted ring.
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Shevchenko, Serhii S. "General Approach to Modeling of Non-Contact Seals and Their Effect on the Dynamics of a Centrifugal Machine Rotor." Journal of Mechanical Engineering 25, no. 1 (2022): 32–39. http://dx.doi.org/10.15407/pmach2022.01.032.

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There is a constant demand for higher equipment parameters, such as pressure of a sealing medium and shaft rotation speed. However, as the parameters rise it becomes more difficult to ensure hermetization efficiency. Moreover, sealing systems affect the overall operational safety of the equipment, especially vibratory. Non-contact seals are considered as hydrostatodynamic supports that can effectively damp rotor oscillations. Models of an impulse and a groove seals, models of rotor-seals system and rotor-auto-unloading system, model of a shaftless pump are studied to evaluate an effect of thes
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Shevchenko, O. S., and S. S. Shevchenko. "Ways to improve seals to increase operational safety of NPP pumps." Reporter of the Priazovskyi State Technical University. Section: Technical sciences, no. 41 (December 24, 2020): 145–54. https://doi.org/10.31498/2225-6733.41.2020.226199.

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. The sealing unit is a complex system, on which reliability, safety and durability of the pump unit is largely depend. An analysis of the existing designs of sealing units for nuclear power plants (NPP) pumps was carried out, which showed that the most widespread were hydrostatic and mechanical face seals with improved lubrication conditions. Hydrostatic seals are used as main seals for throttling high pressure. Mechanical face seals, due to their low leakage, are mainly used as closing seals. The most promising areas of sealing units design for NPP pumps have been identified. It has been det
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Yu, Zidong, Serhii Shevchenko, Mykola Radchenko, Oleksandr Shevchenko, and Andrii Radchenko. "Methodology of Designing Sealing Systems for Highly Loaded Rotary Machines." Sustainability 14, no. 23 (2022): 15828. http://dx.doi.org/10.3390/su142315828.

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Higher parameters of centrifugal machines are constantly required, such as the pressure of the medium to be sealed and the speed of rotation of the shaft. However, as the parameters increase, it becomes more and more difficult to ensure the effectiveness of sealing. In addition, sealing systems affect the overall safety of equipment operation, especially vibration. In order to harmonize the sealing functions and increase the dynamic rigidity of the rotors of centrifugal machines, a method for modeling complex sealing systems has been developed. Non-contact seals are considered as hydrostatic–d
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Kim, Insoo, Sung Min Kim, and Jongchul Seo. "Development of Temperature Controlled Impulse Sealer for Preventing Cumulative Heat and Improving Sealing Quality." KOREAN JOURNAL OF PACKAGING SCIENCE AND TECHNOLOGY 25, no. 3 (2019): 117–23. http://dx.doi.org/10.20909/kopast.2019.25.3.117.

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Dewi, Marysca Shintya, Linda Marlinda, and Komarudin Komarudin. "Decision-Making Framework Using MARCOS for Evaluating Sealing Machines in Small and Medium Enterprises." sinkron 9, no. 1 (2025): 462–75. https://doi.org/10.33395/sinkron.v9i1.14367.

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In the era of globalization, Micro, Small, and Medium Enterprises (MSMEs) hold a vital position in Indonesia's economy, contributing significantly to GDP and employment. Despite their importance, MSMEs need help in selecting appropriate sealer machines, which affects production efficiency and product quality. There are six different kinds of sealer machines that are looked at in this study. They are manual, vertical, continuous, horizontal semi-automatic, impulse, and vacuum. The MARCOS method is used to find the best option. Results indicate that the Impulse Sealer Machine (A5) is the most su
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Blasiak, Slawomir. "Numerical modeling and analysis of the noncontacting impulse gas face seals." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 8 (2018): 1139–53. http://dx.doi.org/10.1177/1350650118817188.

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Noncontacting mechanical seals with various kinds of face surface modifications have established their position in the sealing technique. Over the last few years, a lot of works dedicated to the impact of various surface modifications on the dynamics of working rings have been created. This paper presents model studies regarding relatively unknown noncontacting impulse gas face seals. Here, a mathematical model of impulse gas face seals is developed including the nonlinear Reynolds equation and stator dynamics equations, which were solved simultaneously using numerical methods. An original com
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Dissertations / Theses on the topic "Impulse sealing"

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Хализева, А. Г. "Статический расчет импульсного газового уплотнения". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40479.

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Уровень развития современной промышленности напрямую связан с умением проектировать и изготавливать надежные уплотнения подвижных соединений. Экспериментальные исследования и опыт эксплуатации показали, что импульсные уплотнения удовлетворяют двум главным условиям, предъявляемым к уплотнениям роторов: обладают требуемой герметичностью и повышенной надежностью.
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Лісовенко, Дмитро Володимирович, Дмитрий Владимирович Лисовенко, Dmytro Volodymyrovych Lisovenko, Андрій Васильович Загорулько, Андрей Васильевич Загорулько та Andrii Vasylovych Zahorulko. "Экспериментальное исследование торцовых затворных импульсных уплотнений". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40580.

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Books on the topic "Impulse sealing"

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Stapley, Jonathan. The Power of Godliness. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190844431.001.0001.

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The Power of Godliness explores Mormon liturgical history to elucidate Mormon cosmology and lived religion. Mormons use rituals, patterns of worship, and conceptions of priesthood to order their lives and the universe. What Mormons have meant by “priesthood” has evolved over time and in relation to ecclesiology, authority, gender, and race. For much of the nineteenth century, Mormons conceptualized their family relationships formalized through sealing rituals over their temple altars, as a priesthood and materialized heaven. This heavenly structure was eternal, and consequently church leaders
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Book chapters on the topic "Impulse sealing"

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Gooch, Jan W. "Impulse Sealing." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6238.

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Gooch, Jan W. "Thermal Impulse Sealing." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11754.

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"Impulse sealing." In Encyclopedic Dictionary of Polymers. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_6138.

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"Thermal impulse sealing." In Encyclopedic Dictionary of Polymers. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_11527.

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Dewhurst, David N., Peter J. Boult, Richard M. Jones, and Stuart A. Barclay. "Fault Healing and Fault Sealing in Impure Sandstones." In Evaluating Fault and Cap Rock Seals. American Association of Petroleum Geologists, 2005. https://doi.org/10.1306/1060755h23161.

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Abstract Clay content is a first-order control on the mechanical and fluid-flow properties of fault rocks. The effects of deformation and also diagenesis are modified by the presence of clay in impure sandstones, although our understanding of the results of such changes is not well constrained. Because a lack of data for fault rocks in impure sandstones limits our ability to assess fault seal risk, a study was undertaken to investigate the effects of physical and diagenetic processes on these parameters in the Otway Basin on the southern margin of Australia. Fault rocks formed in impure reserv
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Conference papers on the topic "Impulse sealing"

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Shevchenko, Serhii. "Study of the non-contact seals influence on the centrifugal machine’s dynamic characteristics." In International Sealing Conference. VDMA Fluidtechnik, 2024. http://dx.doi.org/10.61319/fkoe7dj9.

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"Higher parameters of centrifugal machines are constantly required, such as the pressure of the medium to be sealed and the speed of rotation of the shaft. However, as the parameters increase, it becomes more and more difficult to ensure the effectiveness of sealing. Non-contact seals, in addition to sealing, perform an equally important function – to improve the vibration state of the centrifugal machine. Design measures aimed at increasing the hydraulic resistance of seals, as a rule, increase their hydrostatic stiffness and damping and thus improve their dynamic qualities. Non-contact seals
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BŁASIAK, S. "Analysis of Pressure Distribution in Non-Contacting Impulse Gas Face Seals." In Terotechnology XII. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644902059-37.

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Abstract. Strict norms regarding the emission of harmful substances into the natural environment impose stringent requirements on engineers designing sealing units, especially when designing new mechanical seals. This especially concerns mechanical non-contacting seals with various surface layer modifications. Complex mathematical models that enable analyzing complex physical phenomena are developed to support the designing works. The presented paper includes specification of the impulse gas face seals mathematical model which takes into consideration the non-linear Reynolds equation. The math
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Simić, Ninoslav, and Jovan Mrvić. "ELEKTRIČNA ISPITIVANJA MODULARNOG SISTEMA ZA ZAPTIVANJE PRODORA KABLOVA." In 36. Savetovanja CIGRE Srbija 2023 Fleksibilnost elektroenergetskog sistema. Srpski nacionalni komitet Međunarodnog saveta za velike električne mreže CIGRE Srbija, 2023. http://dx.doi.org/10.46793/cigre36.0360s.

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When connecting power equipment with cable lines, it is necessary to seal the cables at the point of entry through buildings, foundations, distribution cabinets, etc. In addition, the protective conductor (sheath) of the cable in power facilities must be grounded, usually at both ends of the cable, or in some cases only at one end of the cable. This paper presents the results of testing and research of two modular cable sealing systems. The first tested system allows grounding of the cable sheath, while the second system does not have the possibility of grounding the cable sheath. For the firs
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Sato, Masahiro, Kazunobu Ndong, and Hiroaki Taniguchi. "Leakage Loss Reduction by Shroud Cavity Shape Improvement in Reaction Turbine." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-124167.

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Abstract In a steam turbine blade row, leakage flows through the radial clearance between the shroud at the tip of the blade and the sealing fins resulting in a reduction in efficiency, known as leakage loss. During turbine operation, radial clearances are affected by various factors such as thermal deformation resulting in elongation difference between the rotor and casing, deflection due to the rotor’s weight, and changes in the state of the bearing oil film. The design strategy commonly adopted to reduce the amount of leakage flow includes: reducing seal fin tip clearance, increasing the nu
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GUO, YINGHUA, WEI LIU, RUIJING LI, and YANCHENG DONG. "NUMERICAL SIMULATION OF A NAVAL GUN CHARGE." In 32ND INTERNATIONAL SYMPOSIUM ON BALLISTICS. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/ballistics22/36097.

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Chamber cleaning projectile is one of the auxiliary projectiles equipped with a naval gun. It is an air explosion projectile without projectile. It is used to clean up the projectile retained in the chamber for special reasons or remove the residue in the chamber after launching the projectile. In this paper, based on the internal ballistic theory and one-dimensional twophase flow theory [1-3], the one-dimensional two-phase flow internal ballistic model of ordinary grenade is established, and the internal ballistic simulation calculation of the launching process of grenade is carried out. On t
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Paidimarri, Vishal, Krupa Jacob, Uppu Harish, and David Hovis. "Effect of Fatigue Loads on behavior of 2024 Aluminum for Aircraft Hydraulic Applications." In AeroCON 2024. SAE International, 2024. http://dx.doi.org/10.4271/2024-26-0431.

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<div class="section abstract"><div class="htmlview paragraph">Hydraulic systems in aircraft largely comprise of metallic components with high strength to weight ratios. Some examples of such material include Aluminum and Titanium alloys which are typically chosen for low and high-pressure applications respectively. For aircraft fluid conveyance products, hydraulic conduits are fabricated by axisymmetric turning to support flow conditions. The hydraulic conduits can have grooved interfaced design within for placement of elastomeric sealing components. This article presents a systema
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Hess, Joseph E. D. "Numerical Study of an Impusively Loaded Vessel Containing Double Versus Single Closure Bolt Patterns." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65976.

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Impulsively loaded pressure vessels are often closed using a bolted joint configured in a double staggered row pattern. The bolted joint design must maintain the placement of the vessel opening covers to support the structural integrity of the shell and also provide the necessary preload of sealing surfaces for leak prevention. Good design practice suggests configuring tensile loaded bolted joints with a double rows pattern in order to minimize prying against the bolt head induced by localized moments. Double bolt row patterns allow moments induced by load offsets to be reacted through contact
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Hai, Pham Minh, and Philip Bonello. "A Computational Parametric Analysis of the Vibration of a Three-Spool Aero-Engine Under Multi-Frequency Unbalance Excitation." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22801.

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The integration of squeeze-film dampers (SFDs) in aero-engine assemblies is a highly cost-effective means of introducing damping in an otherwise lightly damped structure. However, their deployment requires careful unbalance response calculations that take due account of the SFDs’ nonlinearity, particularly when they are unsupported by a centralising spring. Until recently, such calculations were prohibitive due to the large number of assembly modes that typically need to be considered. This problem has been overcome by the authors through the novel Impulsive Receptance Method (IRM) and the Rec
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