Design and numerical simulation of progressive cavity pump with internal compression process

被引：0
|
作者：
Cong J. [1 ]
Dong L. [2 ]
Wang J. [2 ]
Liu Y. [2 ]
Pan S. [2 ]
Wang Z. [2 ]
Geng M. [3 ,4 ]
机构：
[1] SINOPEC Shengli Offshore Petroleum Engineering Technology Inspection Compan Limited, Dongying
[2] College of New Energy in China University of Petroleum (East China), Qingdao
[3] State Key Laboratory of Compressor Technology, Hefei
[4] Hefei General Machinery Research Institute Company Limited, Hefei
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2022年 / 46卷 / 02期
关键词：
Numerical simulation; Progressive cavity pump; Screw length; Variable meshing gap; Working process;
D O I：
10.3969/j.issn.1673-5005.2022.02.016
中图分类号：
学科分类号：
摘要：
The screw rotor and stator of the conventional all-metal progressive cavity pump (AMPCP) do not experience an internal compression process, so that the screw length is relatively long during the downhole oil. In order to reduce the length of the AMPCP and improve its passability in the oil well, an AMPCP with a variable meshing gap, whose functions include internal compression processes and pressure relief channels, was proposed in this study.The profile equations of the cross section of the AMPCP with a variable meshing gap were deduced. Then the variation law of the meshing gap was studied, and the design method of the new screw was obtained. Furthermore, the working performance of the new AMPCP was studied by numerical simulations, and then the distributions on the internal pressure field and velocity field were obtained, compared with the conventional AMPCP with equal meshing gaps. The results show that the length of the proposed new AMPCP is relatively small and its axial leakage speed is also smaller when the other parameters are kept the same. Therefore, its comprehensive performance is improved. © 2022, Editorial Office of Journal of China University of Petroleum(Edition of Natural Science). All right reserved.
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页码：152 / 159
页数：7
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