工厂生产的各种截止阀必须进行10～23kgf/mc~2的水压试验,保压一分钟。过去,这类阀进行水压试验是在一个机械装置上进行。虽能达到23kgf/cm~2的水压要求,但上压速度慢,一旦压力上升,又无法控制,尤其不能满足保压一分钟的要求。针对这种情况,我们给水压试验台配备了一个简单的液压系统,使打压工序实现了半自动化,提高了工作效率。系统原理见图1。当油水缸的结构已定 The factory produced a variety of globe valves must be 10 ~ 23kgf / mc ~ 2 pressure test, holding pressure for one minute. In the past, these valves were hydrostatically tested on a mechanical device. Although it can meet the water pressure requirement of 23kgf / cm ~ 2, but the pressure on the slow, once the pressure rises, they can not control, in particular, can not meet the pressure for one minute. In view of this situation, we have equipped the hydraulic test bed with a simple hydraulic system to make the pressing process semi-automatic and improve work efficiency. System principle shown in Figure 1. When the structure of the oil tank has been set