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| Design of test rig for water-lubricated thrust bearing and thrust disk |
| BAI Yuxing1,2,3, KONG Fanyu2*, SHEN Yong3, WANG Jiaqiong2, GU Xinyan1 |
| 1. School of Automotive & Rail Transit, Nanjing Institute of Technology, Nanjing, Jiangsu 211167, China; 2. National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 3. Shandong Xingyuan Mine Equipment Group Co. Ltd., Jining, Shandong 272300, China |
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Abstract In order to completely study the external performance of thrust disc and the water film characteristics of thrust bearings, break the technical bottleneck of compact big-power wet motor, ensure that the thrust disc as auxiliary impeller could balance the axial thrust and provide the head for water circulation in the motor when the pump is in operation, a comprehensive test rig for water lubricated thrust bearings and thrust disc was designed and built. The test rig consists of main test section, axial thrust test unit, sensor unit and control unit, etc. The hydraulic performance of the thrust disc, water film bearing capacity and film thickness were acquired by using the test rig at six rotative speeds such as 1 500, 2 000, 3 000, 4 000, 5 000, and 6 000 r/min. The measured water film thickness was validated with the thickness predicted by employing a numerical method. The results show that the data obtained on the test rig is accurate and reliable. The water-lubricated thrust bearings and thrust disc integrated test rig can provide a theoretical basis and engineering guidance for further investigations in related fields, and has important meaning.
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Received: 22 July 2019
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