三峡水库大型取水缆车离心泵吸入管道超规范安装问题研究及处理措施  

An Analysis of the Below-standard Installation of the Centrifugal Pump′s Suction Pipe of the Large Cable Car for Water-intake in the Three Gorges Reservoir

作　　者：曹继学 郭棉明 钱晓慧 周尚 范家兵 CAO Ji-xue;GUO Mian-ming;QIAN Xiao-hui;ZHOU Shang;FAN Jia-bing(China Three Gorges Corporation,Yichang 443100,Hubei Province,China;Zhijiang Hongju Shipbuilding Co.,Ltd,Zhijiang 443200,Hubei Province,China)

机构地区：[1]中国长江三峡集团有限公司流域枢纽运行管理中心,湖北宜昌443100 [2]枝江鸿巨船舶制造有限公司,湖北枝江443200

出　　处：《中国农村水利水电》2022年第8期178-181,共4页China Rural Water and Hydropower

摘　　要：为研究大管径吸入管道超规范安装离心泵无法取水问题,采用了可视化装置多次模拟试验,分析了吸入管道内气、液两相运动规律,查明了产生气缚的气体真实来源:因吸入管道不顺直,气体被液体封闭无法排出。围绕排空吸入管道这个关键问题,经多次尝试,利用气囊位于吸入管道高点位置且有压的特点,设计了简易装置,排空气体,消除气缚现象,代价小、效果好,为相应规范补充条文说明提供依据,同时也为行业类似工程提供参考。To study the centrifugal pump problem caused by below-standard installation of the large diameter suction pipe,various visualiza‐tion experiments are conducted to analyze the law of gas-liquid two phase flow in the suction pipe.It shows that since the suction pipe is not straight,gases are locked in the pipe by liquids.Thus,the key to solving this problem is making the pipe a vacuum.With high position and strong pressure of the locked gases,a simply device is created to make the pipe a vacuum.The findings can revise the relevant design specifi‐cation,and be a good reference for similar projects.

关 键 词：供水工程 三峡水库 取水缆车 离心泵空缚 气液两相流 高位排气法 

分 类 号：TV675[水利工程—水利水电工程] TH311[机械工程—机械制造及自动化]