探讨叶轮错开改善双吸离心泵压力波动的机理。

IF 2.6 4区 综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES
Qiang Liu, Zhaoheng Lu, Ran Tao, Hongzhong Lu, Ruofu Xiao
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引用次数: 0

摘要

背景:双吸泵的叶轮交错布置可以有效减小涡壳内的压力波动,但减小压力波动的机理尚不清楚,同时,传统的分析方法无法实现压力波动的可视化。同时,传统的分析方法无法实现压力波动的可视化:本文旨在探索压力波动的空间分布、传播和衰减规律,并在此基础上研究交错叶轮减小压力波动的原因:本文采用了一种名为脉冲跟踪网络(PTN)的新方法。与只分析散点压力波动的传统方法相比,该方法大大提高了压力波动的空间分辨率。其中,相位分析是该方法的一大亮点:结果:交错叶轮大大降低了叶片通过频率主导的压力波动强度。结果:交错式叶轮明显降低了以叶片通过频率为主导的压力波动强度,同时,压力波动在涡流中的传播方式由径向传播变为在涡流横截面上的周向传播:结论:交错式叶轮能有效减少压力波动,其引起的周向传播被认为是压力波动的主要原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Exploring the mechanism of improving the pressure fluctuation of double suction centrifugal pump by impeller stagger.

Background: The pressure fluctuation in the volute can be effectively reduced when the impeller of the double-suction pump is staggered, but the mechanism of this reduction is still unclear. At the same time, the traditional analysis method cannot realize the visualization of pressure fluctuation.

Objective: The purpose of this article is to explore the spatial distribution, propagation, and attenuation law of pressure fluctuation, and on this basis, to research the reason why staggered impeller reduce pressure fluctuation.

Methods: A new method called Pulse tracking network (PTN) was used in this article. Compared with the traditional method, which only analyzes the pressure fluctuation at scattered points, this method greatly improves the spatial resolution of the pressure fluctuation. In particular, the phase analysis is a major highlight of the method.

Results: Staggered impeller significantly reduced the pressure fluctuation intensity dominated by blade passing frequency. At the same time, the propagation of the pressure fluctuation in the volute changed from radial to circumferential in the volute cross-section.

Conclusions: Staggered impeller can effectively reduce pressure fluctuation, and the circumferential propagation caused by it is considered to be the main reason for it.

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来源期刊
Science Progress
Science Progress Multidisciplinary-Multidisciplinary
CiteScore
3.80
自引率
0.00%
发文量
119
期刊介绍: Science Progress has for over 100 years been a highly regarded review publication in science, technology and medicine. Its objective is to excite the readers'' interest in areas with which they may not be fully familiar but which could facilitate their interest, or even activity, in a cognate field.
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