射流式自吸离心泵研究现状与前景展望

发布时间：2019-02-11 20:02

【摘要】：射流式自吸离心泵作为一种新型结构的泵,具有启动前无需向泵体内灌水可实现快速自吸的特点,已经成为国内外研究的热点.通过回顾射流式自吸离心泵的发展历程,分析了射流式自吸离心泵的工作机理与结构优势,并在系统总结国内外研究成果的基础上,从导流器式不对称压水室、碗式回流阀自动关闭结构形式、射流喷嘴几何尺寸、喷嘴收缩角变量等方面分析了射流式自吸离心泵理论与技术研究进展,并提出了未来的研究方向:在水力设计方面,设计不同结构型式的水力模型,深入探讨叶轮不同几何参数对泵整体性能的影响;在结构上,采用创新的自吸结构,不断深化自吸结构对自吸性能的影响机理,并确定各零部件最优几何参数的选取方法,提高射流式自吸离心泵的各项性能指标;在加工工艺上,突破传统浇铸的制造方法,采用新型的铝合金压铸成型,为研制高效、快速自吸、低能耗的射流式自吸离心泵提供理论依据.
[Abstract]:As a new type of pump, jet self-priming centrifugal pump has become a hot research area at home and abroad because it does not need to inject water into the pump body to realize rapid self-priming before start-up. By reviewing the development history of jet self-priming centrifugal pump, the working mechanism and structural advantages of jet self-priming centrifugal pump are analyzed. On the basis of systematically summarizing the research results at home and abroad, the unsymmetrical water pressure chamber of flow guide type is analyzed. This paper analyzes the development of the theory and technology of self-priming centrifugal pump in the aspects of automatic closure of bowl backflow valve, geometry dimension of jet nozzle and variable of nozzle shrinkage angle, and puts forward the future research direction: hydraulic design, and so on. The hydraulic model of different structure types is designed and the influence of different geometric parameters of impeller on the whole performance of pump is discussed in depth. In the structure, adopting the innovative self-priming structure, the influence mechanism of the self-priming structure on the self-priming performance is deepened, and the method of selecting the optimum geometric parameters of each component is determined to improve the performance index of the self-priming centrifugal pump. In the processing technology, breaking through the traditional casting manufacturing method and adopting a new type of aluminum alloy die casting forming, this paper provides a theoretical basis for the development of high efficiency, fast self-priming, low energy consumption jet self-priming centrifugal pump.
【作者单位】：江苏大学国家水泵及系统工程技术研究中心;
【基金】：国家自然科学基金资助项目(51409127) “十三五”国家科技支撑计划项目(2015AB07B06) 江苏省重点研发计划项目(BE2016319) 镇江市农业科技支撑项目(NY2013031)
【分类号】：TH311

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