Spring-supported hydrodynamic thrust bearing with special reference to elastic distortion analysis

The central support tilting thrust bearing is widely used in the motor-generator unit, and the central support tilting thrust bearing performs poorly compared with the offset bearing. In order to improve the performance of the thrust bearing capable of the bidirectional operation, a spring-supported switching tilting thrust bearing was designed, which could run under offset condition at both clockwise and counterclockwise. In order to verify the reliability of the bearing, we designed a true size thrust bearing test bench and measured the performance parameters of the temperature, pressure, oil film thickness, and power loss of the pad. This article introduces in detail the operation mechanism of the bidirectional offset spring-bed tilting thrust bearing. The bidirectional offset spring-bed tilting thrust bearing structure and the central support bearing structure were compared and tested. The test results of the performance difference of large tilting pad bearings with different structures were obtained. According to the experiment, the spring support structure has good adaptability, and the improved bidirectional offset support bearing not only has higher bearing capacity, but also has better performance in all aspects of temperature rise and loss than the central support bearing. The actual size experiment provides the experimental data for the theoretical calculation of large tilting pad bearings, providing a more accurate basis for the bearing performance and safety assessment.

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“…Sinha et al. 25 also believes that a multi-spring-supported thrust bearing system optimizes load distribution.…”

Section: Resultsmentioning

confidence: 99%

“…According to the oil pressure contour maps in Figure 9(a) to (d), the outlet zone of the offset support pad was able to carry a load, whereas the central support pad had little capacity at the outlet zone. Sinha et al 25 also believes that a multi-spring-supported thrust bearing system optimizes load distribution.…”

Section: Under the Counterclockwise Conditionmentioning

confidence: 99%

A comparative experimental study on large size center and bi-directional offset spring-bed thrust bearing

Yang

Zheng

Jiang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…To the knowledge of the authors, there exist not many papers studying the performance of spring-supported thrust bearings. Ashour and Sinha studied spring-supported thrust bearings including the effect of elastic distortion [2][3][4] . Ettles discussed effects of pad size and spring arrangement on the pad's behavior by thermo-elasto-hydrodynamic analysis Is] .…”

Section: Introductionmentioning

confidence: 99%

The analysis of performance on spring-supported thrust pads inclusive of one-dimensional pressure build-up

Wang

Zhang

1999

J. of Shanghai Univ.

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In the paper, a solution of one dimensional fore-region pressure build-up is put forward. The performance of spring-supported thrust bearing is carried out with 3-dimensional thermo-elasto hydrodynamic (TEHD) lubrication theory inclusive of inlet pressure build-up, thermal-elastic distortion of pad and thermal effect. The effects of fore-region pressure build-up and the variation of some operating conditions on the performance of the pad are studled.

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Time-dependent TEHL solution to centrally supported tilting pad bearings subjected to harmonic vibration

Yang

Rodkiewicz

1996

Tribology International

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Spring-supported hydrodynamic thrust bearing with special reference to elastic distortion analysis

Cited by 9 publications

References 11 publications

A comparative experimental study on large size center and bi-directional offset spring-bed thrust bearing

A comparative experimental study on large size center and bi-directional offset spring-bed thrust bearing

The analysis of performance on spring-supported thrust pads inclusive of one-dimensional pressure build-up

Time-dependent TEHL solution to centrally supported tilting pad bearings subjected to harmonic vibration

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