Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Shanxiao Du, Jichao Hong, Hongxin Zhang, Qinghai Zhao, Tiezhu Zhang, Xiaoming Xu and Xiaotian Jiang
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Shanxiao Du: College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China
Jichao Hong: School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Hongxin Zhang: College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China
Qinghai Zhao: Power Integration and Energy Storage Systems Engineering Technology Research Center, Qingdao University, Qingdao 266071, China
Tiezhu Zhang: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Xiaoming Xu: School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Xiaotian Jiang: College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China

Energies, 2021, vol. 14, issue 8, 1-17

Abstract: Reciprocating piston pumps are widely used in various fields, such as automobiles, ships, aviation, and engineering machinery. Conventional reciprocating piston pump distributing flow (RPPDF) systems have the disadvantages of a loose structure and low volumetric efficiency, as well as affected positively by the operating frequency. In this paper, a novel rotating-sleeve distributing flow (RSDF) system is presented for bridging these drawbacks, as well as structurally improved to overcome the inoperable and challenging problems in oil intake and discharge found in the experiment. Moreover, the Singhal cavitation model specifically for the RSDF system and four-cam groove profiles (CGPs) is established. To find the most suitable CGP to reduce the RSDF’s cavitation, the cavitation of the RSDF system was investigated, combining with simulations by taking into account the gap among the rotating sleeve, the pump chamber, and experiments on four presented CGPs. Simulation results based on vapor volume fraction, cavitation ratio, and volumetric efficiency show that the linear profile’s cavitation is the weakest. Finally, the correctness of the simulation is verified through orthogonal experiments. This research is of great significance to the further development of the RSDF system; more important, it has great potential to promote the reform of the RPPDF method.

Keywords: rotating-sleeve distributing flow system; reciprocating piston pump distributing flow; cam groove profile; structurally improved; cavitation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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