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真空破坏阀是虹吸出水流道主要的辅助设备。正确地选择与使用真空破坏阀对泵站的经济运行起着重要的作用。真空破坏阀的种类较多,就目前全国各地使用情况来看,大都是气动或电动的真空破坏阀,其工作原理是:当水泵启动后,真空破坏阀阀盖在外力作用下关闭以加快虹吸形成;水泵停机后,外力克服阀盖上的压差力,打开阀盖放进空气,破坏虹吸作用,截断管中的水流。采用电动或气动真空破坏阀,有两点应引起注意:
Vacuum damage valve is siphon outlet main auxiliary equipment. Correct choice and use of vacuum valve on the economic operation of the pumping station plays an important role. More types of vacuum damage valve, the current situation across the country view, mostly pneumatic or electric vacuum damage valve, and its working principle is: When the pump is started, the vacuum valve cover damaged under external force to speed up siphon Formed; pump shutdown, the external force to overcome the pressure difference on the valve cover, open the valve cover into the air, destroy the role of siphon, cut off the water pipe. The use of electric or pneumatic vacuum valve damage, there are two points should be noted: