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| Influence of U type and triangle vibration absorber on cavitation of rotary sleeve distribution system |
| DU Shanxiao1, ZHANG Hongxin1*, ZHAO Qinghai2, JIANG Xiaotian1, WANG Xinliang3 |
| 1. School of Electromechanical Engineering, Qingdao University, Qingdao, Shandong 266071, China; 2. Power Integration and Energy Storage Systems Engineering Technology Center, Qingdao University, Qingdao, Shandong 266071, China; 3. Kama Automobile Company, Weifang, Shandong 262700, China |
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Abstract In order to understand the influence of different damping groove structures on the cavitation of rotary sleeve flow distribution system. Two types of U and triangle damping groove were designed, The cavitation characteristics of the distributing flow system under the two damping groove were studied by Fluent simulation and experiment to determine the best cavitation under the optimal damping groove structure. The Singhal cavitation model of the distributing flow system was established. The fluid model in the simulation considers the gap between the rotating sleeve and the pump chamber and uses oil as the working medium to explore the cavitation under standard conditions and at different speeds. The experiment was carried out on the YST380W hydraulic comprehensive experiment bench, and the volumetric efficiency of the system at different speeds was monitored, which was consistent with the simulation results. The simulation results show that the gas volume fraction change rules of the two damping grooves are basically the same and the cavitation of the U type damping groove are slightly better, and the greater the speed, the more obvious the advantage; the change trend and size of the cavitation ratio are basically the same, and the advantage of the U type damping groove becomes more and more obvious as the speed increases. The volumetric efficiency first increases and then decreases with the increase of the speed, and the volumetric efficiency of U type damping groove was higher than that of the triangle damping groove. The simulation error was about 2% for the volumetric efficiency experiment of the U type damping groove system.
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Received: 28 September 2019
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