凸舌油槽对摆线转子泵脉动特性的影响

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Abstract In order to improve flow field fluctuation characteristics of a cycloid rotor pump, the pump model having a tongue oil groove structure with a capacity of increasing limit oil inlet and outlet areas was established.Using the numerical simulation method, the internal flow field in the pump model with tongue oil groove structure was calculated.The effects of tongue oil groove on pressure fluctuations at the rotor’s tooth top, tooth root and the maximum meshing volume were analyzed and the rotor’s axial pressure unevenness and axial flow field characteristics were studied.The results showed that the tongue oil groove structure can effectively improve the flow field’s pressure fluctuation of the cycloid rotor pump; the pressure fluctuation at the rotor tooth root drops by about 25%, the pressure fluctuation at the maximum meshing volume drops by about 54.2%; the structure has little effect on the pressure fluctuation at the rotor tooth top; the axial unevenness at the tooth root is about 3.5%, that at the tooth top is about 17.9%, that at the maximum meshing volume is about 3.1%; the smaller the volume between teeth, the larger the axial flow resistance to cause the deposition of high pressure fluid and axial unevenness.

Key words： cycloid rotor pump tongue oil groove pressure fluctuation axial unevenness flow field

Received: 16 June 2017 Published: 28 October 2018

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2018/V37/I21/260

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