Pressure Distribution on the Inner Wall of the Volute Casing of a Centrifugal Pump

IF 1 4区工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Science and Technology of Nuclear Installations Pub Date : 2022-05-19 DOI:10.1155/2022/3563459

Yu‐Liang Zhang, Jin-Fu Li, Tao Wang, Jun-Jian Xiao, Xiaoqi Jia, Li Zhang

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引用次数: 2

Abstract

In order to grasp the distribution characteristics of the pressure field on the inner wall of the volute casing of an atypical open impeller centrifugal pump, the instantaneous pressure at different operating conditions was experimentally measured under four operating rotational speeds to obtain the distribution characteristics of the average static pressure field in the volute casing of this pump model. The pressure pulsation amplitude and pressure pulsation intensity were also analyzed at different rotational speed cases, and the standard deviation analysis was performed. The results showed that the instantaneous pressure pulsation on the inner wall of the volute casing strongly fluctuates during the pump operating, and the closer to the volute casing outlet, the more intense the pressure pulsation was. After increasing the pump shaft speed, the fluctuation amplitude gradually decreased. The pressure pulsation on the wall of tip clearance is more intense than that on the inner wall of the volute shell. The intensity of the pressure pulsation on the wall of tip clearance decreases with the increase of the rotational speed, and the higher the speed, the less intense the pressure pulsation.

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离心泵蜗壳内壁的压力分布

为了掌握非典型开式叶轮离心泵蜗壳内壁压力场的分布特征，在四种运行转速下，对不同工况下的瞬时压力进行了实验测量，得到了该泵蜗壳内平均静压场的分布特征。分析了不同转速工况下的压力脉动幅度和压力脉动强度，并进行了标准差分析。结果表明，在泵运行过程中，蜗壳内壁上的瞬时压力脉动波动较大，且离蜗壳出口越近，压力脉动越大。泵轴转速增加后，波动幅度逐渐减小。叶尖间隙壁面的压力脉动比蜗壳内壁的压力脉动更大。叶尖间隙壁面的压力脉动强度随转速的增加而减小，转速越高，压力脉动越小。

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来源期刊

Science and Technology of Nuclear Installations NUCLEAR SCIENCE & TECHNOLOGY-

CiteScore

2.30

自引率

9.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Science and Technology of Nuclear Installations is an international scientific journal that aims to make available knowledge on issues related to the nuclear industry and to promote development in the area of nuclear sciences and technologies. The endeavor associated with the establishment and the growth of the journal is expected to lend support to the renaissance of nuclear technology in the world and especially in those countries where nuclear programs have not yet been developed.