无动力蝶式止回阀关阀起动转矩自动瞬间加载装置设计

摘要

阐述了无动力止回阀设置关阀起动加载装置的必要性，介绍了一种利用给排水系统运行及正常停泵或事故停泵时瞬间介质压差对止回阀起动转矩进行自动、瞬间加载的装置，及其主要结构元件的设计。%The necessity of valve shut down starting loading device fornon-power check valve are described and a kind of valve are intrduced which have a auto-momentaryl oading device of starting moment of torsion acted by momentary deferential press ure by drainage pipeline system at normal stop sorking or breakdown condition.