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| Influence of structure on wear characteristics performance for sealing surface of front chamber of slurry pump |
| ZHAO Huibin1,2, CAO Qian1, KANG Can1*, MAO Ning1, ZHEN Weiwei3, REN Libin3, DING Kejin4 |
| 1. School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Digitalized Int elligence Engineering, Human Sany Polytechnic College, Changsha, Hunan 410100, China; 3. Excellence pump Industry Co., Ltd., Shijiazhuang, Hebei 050091, China; 4. 704th Research Institute of CSSC, Shanghai 200031, China |
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Abstract In order to study the influence of seal structure of the front chamber of slurry pump on the wear characteristics of its sealing surface, the ESH type cyclone feed pump was used as the research object and four commonly used front chamber sealing structures were selected. Under the premise of the same working conditions and the same hydraulic parameters of impeller and volute, the commercial computational fluid dynamics software ANSYS CFX and wear model were used to simulate the solid-liquid two-phase flow in the above four sealing structures in the pump, which was verified by experiments. The results show that with the angular small-gap sealing structure has the lowest concentration of solid phase on the sealing surface, the velocity distribution of solid phase is the most uniform, the weight loss of the sealing surface is smallest, and the wear resistance is the best. The second is the plane small clearance seal structure and the angle type large clearance seal structure, while the wear resistance of the plane large clearance seal structure is the worst. Furthermore, the wear function is defined, and the distribution of the wear function values on the sealing surface is in good agreement with the experimental results. The research results can provide a theoretical basis for the wear resistance design of slurry pump.
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Received: 30 August 2021
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