水轮机汽蚀安全裕量问题探讨  

A Probe into Hydraulic Turbine Cavitation Margin

作　　者：王爱林 

机构地区：[1]云南省香格里拉县水务局,云南香格里拉674499

出　　处：《中国农村水利水电》2012年第11期75-77,共3页China Rural Water and Hydropower

摘　　要：水轮机运行完全避免汽蚀破坏是困难的。问题在于设法减轻汽蚀机件的破坏作用,同时应避免水轮机在汽蚀发展到使效率降低和机组强烈振动的情况下运行。汽蚀安全裕量便成为一个最为重要的可变参数,水轮机汽蚀安全裕量的选用,关乎水轮机装置允许吸出高度确定,直接影响水能资源的合理利用和工程建设的投资大小,而且也影响到机组运行寿命和维修管理费用等。因此,进一步对汽蚀安全裕量的取值问题进行探讨,不但是学术问题,而且具有一定的经济价值和实践意义。It is difficult for the turbine running to avoid cavitation damage completely. The problem is trying to reduce cavitation me-chanical damage. At the same time, it should be avoided in the development of hydraulic turbine cavitation to reduce the efficiency of the strong vibration and unit operation. Cavitation safety margin becomes one of the most important variable parameters, hydraulic turbine cavitation safety margin selection related to the turbine device allows the height determination, affect water natural resources reasonable use and the investment of project size directly, and the operation of the unit life and repair management costs. Therefore, as for further cavitation safety margin value problems, not only is it an academic problem, but also it has certain economic values and practical significance.

关 键 词：水轮机 汽蚀 安全裕量 

分 类 号：TK73[交通运输工程—轮机工程]