冲击式水轮机热力学法测效率试验研究  

Research on Thermodynamic Method to Measure Efficiency for Pelton Turbines

作　　者：张林 乔中均[2] 马继生 ZHANG Lin;QIAO Zhongjun;MA Jisheng(Power China Huadong Engineering Corporation Limited,Hangzhou Zhejiang 311122;Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou Henan 450003)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《河南科技》2019年第17期62-64,共3页Henan Science and Technology

摘　　要：冲击式水轮机具有工作水头高、压力管道内流速大等特点,因此,流量测量难度较大,而热力学法测量水轮机的效率具有精度高、不需要测量机组流量等优点。目前,国内热力学法测效率试验主要应用于高水头的水泵水轮机上。本文结合国外某大型冲击式水轮机热力学测效率试验的方法、测试装置及流程进行详细介绍和分析,并就其中存在的问题进行了深入探讨。Pelton turbines have such characteristic as the working head and flow velocity in the penstock are very high,thus it is difficult to measure the discharge passing the turbine.However,it is not necessary to measure the dis?charge and has a high precision for thermodynamic method to measure the efficiency,which has a relatively small amount of work.Recently,such method is mainly applied to pump-turbines with high head.This paper introduced and analyzed the method,measured device and measured process in detail combined with a foreign hydropower sta?tion and discussed deeply the existing problems.

关 键 词：冲击式水轮机 热力学法 水轮机效率 

分 类 号：X513[环境科学与工程—环境工程]