小型离心泵通常都配备底阀、闸阀和逆止阀,以保证水泵安全运行,但是通过三阀的水头损失很大,运行管理较为复杂。我省番禺、新会等县在电灌站装置上采取一些措施,取消三阀,经一两年来运行正常可靠,效率提高。办法除采用真空泵射流泵等起动外,这里介绍两种取消三阀的简易做法,供 Small centrifugal pumps are usually equipped with a bottom valve, gate valve and check valve to ensure the safe operation of the pump, but through the three-valve head loss, operation and management more complicated. Panyu, Xinhui and other counties in our province to take some measures in the electric pumping station device to cancel the three valves, the normal operation of a year or two, efficiency. In addition to the method of using a vacuum pump jet pump and other start-up, here are two cancel the simple three-valve approach for