汤峪水电站调压阀运行可靠性分析

An Analysis of the Operational Reliability of the Pressure Regulating Valve at Tangyu Water Power Station

通过对汤峪水电站的计算分析，确定当导叶无分段关闭装置时，调压阀流量为１．７ｍ￣３／ｓ，行程５２ｍｍ，导叶快关闭时间１．９９ｓ，导叶慢关闭时间１７．８９ｓ；当导叶设有分段关闭装置时，调压阀流量为１．４４ｍ￣３／ｓ，行程４４ｍｍ，导叶第一段关闭时间１．８ｓ，导叶两段关闭总时间４．４２ｓ，即能满足要求。

By means of calculation and analysis at Tangyu Water Power Station,some regulated parameters weredetermined. When the guide vane was not installed withstage-closing devices,the flow rate of pressure regulating valve was 1.7m￣3/s,and thetravelwas 52 mm with. 99 s for the fast closing time of the guide vane and 17.89 s forthe slow closing time;when the guide vane and operated with stage-closing devices, theflow rate of the pressure regulating valve was 1. 44 m￣3/s,and the travel was 44 mm with1.8 s and 4.42 s for the total closing time of the two stages. Both ways could meet thedesign requirements