Wyniki wyszukiwania dla: shaft sealing

• Remote Sensing

  Czasopisma

  ISSN: 2072-4292

• ANALYSIS OF THE POSSIBILITIES OF HIGH SPEED SHAFT BEARING SYSTEM DURABILITY INCREASE

  Publikacja

  • B. Bartosz
  • R. Gawarkiewicz
  • M. Wasilczuk

  - TRIBOLOGIA - Rok 2016

  During the operation of wind turbines with a gearbox of traditional configuration, a high failure rate of high-speed shaft bearings is observed. Such a high failures frequency is not reflected in standard bearing durability calculation methods, which can be attributed to atypical failure mechanism. To avoid observed problems in the 1.5 MW wind turbine, the modification of the existing bearing system is proposed. Multiple options,...

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• Analysis of Failures of High Speed Shaft Bearing System in a Wind Turbine

  Publikacja

  • M. Wasilczuk
  • R. Gawarkiewicz
  • B. Bastian

  - Rok 2018

  During the operation of wind turbines with gearbox of traditional configuration, consisting of one planetary stage and two helical stages high failure rate of high speed shaft bearings is observed. Such a high failures frequency is not reflected in the results of standard calculations of bearing durability. Most probably it can be attributed to atypical failure mechanism. The authors studied problems in 1.5 MW wind turbines of...

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• Combined thrust radial bearing of a submarine main shaft – Design and analysis of failure

  Publikacja

  • M. Wasilczuk
  • F. Wasilczuk

  - ENGINEERING FAILURE ANALYSIS - Rok 2020

  This paper presents an analysis of the combined thrust radial bearing of a submarine propulsion shaft. The lubrication system of the bearing is based on a fixed ring. The efficiency of the lubrication system depends on the shaft speed and temperature, which affects oil viscosity. In turn, the thrust bearing load also depends on the rotational speed of the shaft, because as the speed increases, the drag of the ship increases simultaneously,...

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• Loudness Scaling Tests in Hearing Problems Detection

  Publikacja

  • B. Kostek
  • P. Suchomski
  • P. Odya

  - Rok 2015

  The number of people using portable audio players has increased significantly over the recent years. This implies the rise in the number of people having hearing loss problems. Therefore, there is a need to find appropriate procedures that simplify the process of the hearing problem detection. Investigations performed show that audiometric tests may not be sufficient to assess hearing in young people. Contrarily, the obtained results...

• Influence of Bearing Bush Geometry on Properties of Water Lubricated Marine Main Shaft Bearings

  Publikacja

  • W. Litwin

  - Rok 2009

  W pracy przedstawiono wpływ geometrii smarowanego wodą, okrętowego łożyska ślizgowego wału głównego na jego własności hydrodynamiczne.Wykazano, że wielkość luzu łożyskowego, położenie oraz liczba rowków smarnych mają znaczący wpływ na nośnosć łożyska.

• Air journal bearing utilizing near-field acoustic levitation: stationary shaft case

  Publikacja

  • T. Stolarski
  • Y. Xue
  • S. Yoshimoto

  - PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY - Rok 2011

  Results of a study to examine a unique idea of self-levitating journal bearing are presented in this paper. the idea represents a radical departure from the current bearing technology. it utilisesacoustic levitation, which relies on the sound energy radiated by an object supporting a load. acoustic levitation has been demonstrated to support loads of up to 10 kg. in order to support a load theacoustic wave emitted by the radiating...

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• Optimisation of turbine shaft heating process under steam turbine run-up conditions

  Publikacja

  • K. Dominiczak
  • M. Drosińska-Komor
  • R. Rządkowski
  • J. Głuch

  - Archives of Thermodynamics - Rok 2020

  An important operational task for thermal turbines during run-up and run-down is to keep the stresses in the structural elements at a right level. This applies not only to their instantaneous values, but also to the impact of them on the engine lifetime. The turbine shaft is a particularly important element. The distribution of stresses depends on geometric characteristics of the shaft and its specific locations. This means a groove manufactured...

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• Assessment of possible application of water lubricated sintered brass slide bearing for marine propeller shaft

  Publikacja

  • W. Litwin
  • A. Olszewski

  - Polish Maritime Research - Rok 2012

  W artykule przedstawiono wyniki badań eksperymentalnych smarowanego wodą łożyska poprzecznego z panwią wykonaną ze spieku brązu.Przedstawiono wyniki pomiarów rozkładu ciśnienia w filmie smarnym, trajektorie osi wału oraz oporów ruchu.Przeprowadzono ocenę przydatności tego typu łożyska do łożyskowania okrętowych wałów śrubowych.

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• Diagnostics of the drive shaft bearing based on vibrations in the high-frequency range as a part of the vehicle's self-diagnostic system

  Publikacja

  • T. Nowakowski
  • P. Komorski

  - Eksploatacja i Niezawodność - Maintenance and Reliability - Rok 2021

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