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Air inlet pressure variation during opening and closing of pneumatic ball valve
The author: Time:2019/8/26

     气动球阀开启和关闭过程中进气口压力变化情况
     气动球阀开启过程:当入口压力由0逐渐增加到大约4MPa时,球阀开始动作。此后球阀逐渐打开,转动角度逐渐变大,直至到90°位置限位,之后回弹至稳定角度85°。这一过程中,入口压力稍微降低,但总体变化不大。到稳定角度85°后,压力继续增加直至5MPa。
     气动球阀关闭过程:当入口压力在二位五通阀的作用下由5MPa逐渐减少到约1MPa时,球阀开始动作。此后球阀逐渐关闭,角度逐渐变小,直至到-2.2°位置限位,之后回弹至稳定角度0°。这一过程中,入口压力基本不变,到稳定角度0°后,压力继续降低直至0。

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