叶轮与空间导叶时序位置匹配关系对井用潜水泵性能的影响
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河北工程大学机械装备与工程学院

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TH311

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Influence of clocking position matching relationship between Impeller and Space Guide Vane on the performance of well submersible pump
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College of Mechanical and Equipment Engineering, Hebei University of Engineering

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    摘要:

    为了探究叶轮与空间导叶时序位置匹配关系对井用潜水泵性能的影响,以200QJ20型号井用多级潜水泵为研究对象,将次级叶轮和次级空间导叶分别旋转自身相邻两叶片夹角二分之一的时序位置,组合四种不同时序方案。利用CFD方法对各组模型内部流场进行定常与非定常仿真模拟。结果表明:当时序位置不同时,最大扬程与最小扬程相差0.5m,最大效率与最小效率相差0.5%;当次级叶轮旋转二分之一叶轮叶片夹角,次级空间导叶不变化时,扬程和效率最大,贴近导叶工作面的高压区最大,此时叶轮流道区域流线更加平顺;当次级叶轮旋转二分之一叶轮叶片夹角,次级空间导叶旋转二分之一空间导叶叶片夹角时,扬程和效率最小,贴近导叶工作面的高压区最小,此时导叶背面存在二次涡流区域,叶轮进出口以及导叶进口的压力脉动幅值明显减小,而导叶出口处的压力脉动幅值明显增大。

    Abstract:

    In order to explore the influence of the clocking position matching relationship between the impeller and the spatial guide vane on the performance of the well submersible pump, taking the 200QJ20 multi-stage submersible pump as the research object, the secondary impeller and the secondary spatial guide vane are rotated respectively at the clocking position of 1/2 of the angle between the two adjacent blades, and four different clocking schemes are combined. The CFD method is used to simulate the steady and unsteady flow field in each model. The results show that when the position of the time sequence is different, the difference between the maximum head and the minimum head is 0.5m, and the difference between the maximum efficiency and the minimum efficiency is 0.5%. When the secondary impeller rotates 1/2 of the impeller blade angle and the secondary space guide vane does not change, the head and efficiency are the maximum. the high pressure area close to the guide vane face is the largest, and the flow line in the impeller passage area is more smooth. When the secondary impeller rotates the blade angle of 1/2 impeller and the secondary space guide vane rotates 1/2, the lift and efficiency are the smallest, and the high pressure area close to the guide vane working face is the smallest, and there is a secondary eddy current region on the back of the guide vane. the pressure pulsation amplitude at the inlet and outlet of the impeller and the guide vane decreases obviously, while the pressure pulsation amplitude at the exit of the guide vane increases obviously.

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江北,刘志民,左久浩,等. 叶轮与空间导叶时序位置匹配关系对井用潜水泵性能的影响[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-07-10
  • 最后修改日期:2021-08-30
  • 录用日期:2021-08-31
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