摘要
事故停泵水锤是长距离有压引水工程需要高度重视的技术问题,针对瓯江引水工程,以最大扬程下4台水泵事故断电作为控制工况,单泵事故断电作为验证工况,开展事故断电水力过渡过程计算分析,将优化泵出口阀门关闭规律作为主要的水锤防护措施。研究表明,泵出口蝶阀拒动情况下,4台水泵同时事故断电工况较单泵事故断电工况管线中压力、流量波动更加剧烈,水泵反转转速均不满足规范要求;泵出口蝶阀优化采用两段折线关闭规律,可以获得较好的水锤防护效果。
Accident pump-stopping water hammer is a technical problem that needs to be highly valued in long-distance pressurized water diversion projects. This paper carried out calculation and analysis of hydraulic transition process on the Oujiang River Diversion Project. The loss of power accident of four pumps under maximum lift was taken as control condition, and the loss of power accident of single pump was taken as verification conditions. The optimization of pump outlet valve closing law was taken as the main water hammer protection measure. The research shows that when the butterfly valve at the outlet of the pump refuses to operate, the pressure and flow in the pipeline fluctuate more violently than that of the single pump during pump trip accident, and the reverse speed of the pump does not meet the specification requirements. By adopting the two-stage broken line closing law of the pump outlet butterfly valve, a better water hammer protection effect can be obtained.
作者
董合费
黄小燕
王生
DONG He-fei;HUANG Xiao-yan;WANG Sheng(Wenzhou Ou River Water Diversion Development Co.,Ltd,Wenzhou 325000,China;Zhejiang Shanxi Water Conservancy&.Hydropower Development Co.,Ltd.,Wenzhou 325000,China)
出处
《水电能源科学》
北大核心
2023年第2期137-140,172,共5页
Water Resources and Power
基金
浙江省水利厅科技计划重大项目(RA1803,RA2011)
国家重点研发计划(2016YFB0502604,2016YFC0402502)。
关键词
引水工程
事故断电
泵站
阀调节
水锤防护
water diversion project
accident power failure
pumping station
valve regulation
water hammer protection
