轴流泵系统技术创新与发展分析

Researches and Developments of Axial-flow Pump System

论述了我国轴流泵系统水力性能研究和技术创新,探讨了轴流泵系统研究发展趋势。阐述了高比转数轴流泵水力模型和应用发展的过程;通过归纳轴流泵系统特点提出按电动机安装位置进行分类,即轴伸式轴流泵系统和贯流式轴流泵系统两类结构形式。分别阐述了不同类型轴流泵系统在泵站工程中的创新应用。从技术发展的角度研判轴流泵系统的发展趋势及应用前景。讨论了传统水泵选型方法的局限性,分析了适用轴流泵系统的水泵选型新方法的合理性。分析基于试验数据的轴流泵变角调节公式及适用性;分析了进水旋涡危害和安全策略,总结了进水池旋涡研究的成果和消防涡措施。针对该领域研究发展中的现实和潜在问题,提出进一步深化研究创新的思路。

The low head pump system, mainly axial-flow pump system research and technological innovation in China are introduced. The research and development trend on hydraulic performance of the axial flow pump system are discussed. The applications of high speed axial-flow pump hydraulic model and development progress are presented. Through inductive characteristics of axial-flow pump system,the classification of the system is put forward according to the installation position of the motor,namely the shaft extension type axial-flow pump system and the tubular axial-flow pump system. The innovation applying of the different types of axial-flow pump systems in a quantity pumping station projects is introduced respectively. From the perspective of technological development,the development trends and application prospects of axial-flow pump system are analyzed. The limitations of the traditional pump selection method are discussed,and the applicable rationality of a new method of pump selection for the axial-flow pump system is introduced. The variable angle adjustment formula and applicability based on the test data of axial-flow pump system are introduced. The harmfulness to the pump units from the intake vortex and the safety policies are analyzed. The research results of the vortices in the pump sump and the measures of vortices prevention and elimination are described. As regarding the real and potential problems in research development on axial-flow pump system,the suggestions for further deepen researches are presented.Although the hydraulic performance of axial flow pump system research has reached a higher level,but possibility of partial breakthroughs still exists. The future research direction of pump system should be more to the structural optimization,the pump system reliability and adaptability,vibration and noise,and run quality promotion.