有压管道中排气速度与管道压力的关系

Relation between venting speed and pipe pressure, water moving speed and pipe pressure

集中供热、城市输配水管道常出现管道爆管,给工业生产,居民生活带来严重影响,经有关方面的专家分析,其主要原因是管道排气不畅引发水锤造成的,然而,工程实际中,管道排气装置的合理选择及正确安装都未得到足够的重视。基于此,我们模拟工程实际中排气阀工作状态下的环境,根据实验数据,分析了管道排气速度与管道压力及管道中液面上升与管道中压力之间的关系,希望能对合理正确选择排气阀有所帮助。

Accidents of exploding pipe frequently occurred in water feeding system of cities, result in terrible effectivation on industry and residents＇ life. Under the investigation of the accidents , it was discovered that most of them belonged to water-hammer imputing to bad vents. However, that was not attached in rationalize of choosing and installing vent valves. So we simulate enviroment of vent valve＇working condition in practical engineering and according to expriment data , analyze relation between venting speed and pipe pressure, water moving speed and pipe pressure. We hope it＇s helpful to rationalize of choosing vent valves.