前置轴流叶轮对离心泵汽蚀性能的影响

发布时间：2018-01-15 17:29

本文关键词：前置轴流叶轮对离心泵汽蚀性能的影响　出处：《水泵技术》2016年03期 　论文类型：期刊论文

【摘要】：随着离心泵向高转速化发展,离心泵的汽蚀性能成为其稳定运行的重要因素。本研究在离心轮前安装一种特殊的轴流式叶轮以提高离心泵的抗汽蚀性能。轴流式叶轮的水力设计采用升力法,设计完成后用PUMPLINX软件对装有轴流式叶轮的离心泵进行数值模拟,模拟结果表明:装有轴流式叶轮的离心泵其性能参数符合设计要求,且临界汽蚀余量显著降低到安全范围内。最后对此泵做性能试验和汽蚀试验,试验后把试验结果与装有常规诱导轮的离心泵的试验结果进行对比,结果表明,在此次研究中,装有轴流式叶轮做诱导轮的离心泵其性能与汽蚀特性均符合设计要求,并且很好地改善了装有常规诱导轮的离心泵此前在结构上的问题。
[Abstract]:With the development of centrifugal pump to high speed. Cavitation performance of centrifugal pump has become an important factor for its stable operation. In this study, a special axial flow impeller was installed in front of centrifugal wheel to improve the cavitation resistance of centrifugal pump. The hydraulic design of axial flow impeller adopts lift method. After the design is finished, the centrifugal pump with axial flow impeller is numerically simulated by PUMPLINX software. The simulation results show that the performance parameters of centrifugal pump equipped with axial flow impeller meet the design requirements. And the critical cavitation allowance is significantly reduced to the safe range. Finally, the performance test and cavitation test of this pump are done. After the test, the test results are compared with the results of the centrifugal pump equipped with conventional induction wheel, the results show that. In this study, the performance and cavitation characteristics of centrifugal pump with axial flow impeller as inducer are in line with the design requirements, and the structural problems of centrifugal pump with conventional inducer are well improved.
【作者单位】：陕西航天动力高科技股份有限公司;西安市流体动力工程技术研究中心;
【分类号】：TH311
【正文快照】： 弓|言众所周知,介质在离心轮进口能量低于必需汽蚀余量的状况下会发生汽蚀。一旦发生汽蚀,会因气泡堵塞流道而严重影响离心泵的性能,持续运行还会对离心轮等过流部件造成汽蚀破坏。长久以来,国内外学者对提高离心泵的抗汽蚀性能做了许多研究,取得了大量成果。其中前置增压泵

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