长距离钢丝网骨架聚乙烯输水管水锤效应防护措施分析

ANALYSIS OF PROTECTION MEASURES FOR WATER HAMMER EFFECT OF LONG-DISTANCE STEEL MESH SKELETON POLYETHYLENE WATER PIPE

以洛宁抽水蓄能电站工程为背景,介绍了钢丝网骨架聚乙烯复合管(简称SRTP)在长距离、多起伏山群里进行供水时产生水锤效应的原因和解决措施。当SRTP长距离输水管关闭水泵阀门时,SRTP管和阀门收到的水压力增大产生水锤效应;SRTP长距离输水管中产生气泡时,对SRTP管的压力也会增大,产生断流弥合水锤效应;采用安装超压阀门的方式,减缓SRTP管和阀门受到的水压力,并建立SRTP长距离运输管道水锤计算模型,分析超压阀门的安装效果;设置单向调压塔、双向调压塔和SRTP管减压调蓄池,预防SRTP长距离输水管中的断流弥合水锤应力。

Taking Luoning pumped storage power station project as the background, this paper introduces the causes and solutions of water hammer effect produced by steel wire mesh polyethylene composite pipe(SRTP for short) when supplying water in long distance and hilly mountains. When the water pump valve of SRTP long-distance pipeline is closed, the water pressure received by SRTP pipe and valve increases, resulting in water hammer effect. When bubbles are generated in the SRTP long-distance pipeline, the pressure on the SRTP pipe will also increase, resulting in the water hammer effect of broken flow bridging. By installing overpressure valve,the water pressure received by SRTP pipe and valve is reduced, and the water hammer calculation model of SRTP long-distance transportation pipeline is established to analyze the installation effect of overpressure valve. Set unidirectional pressure regulating tower, bidirectional pressure regulating tower and SRTP pipe decompression and storage tank to prevent the interruption of flow in THE SRTP long-distance transmission pipe and bridge the water hammer stress.