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

     氣動球閥開啟和關(guān)閉過程中進氣口壓力變化情況
     氣動球閥開啟過程:當入口壓力由0逐漸增加到大約4MPa時,球閥開始動作。此后球閥逐漸打開,轉(zhuǎn)動角度逐漸變大,直至到90°位置限位,之后回彈至穩(wěn)定角度85°。這一過程中,入口壓力稍微降低,但總體變化不大。到穩(wěn)定角度85°后,壓力繼續(xù)增加直至5MPa。
     氣動球閥關(guān)閉過程:當入口壓力在二位五通閥的作用下由5MPa逐漸減少到約1MPa時,球閥開始動作。此后球閥逐漸關(guān)閉,角度逐漸變小,直至到-2.2°位置限位,之后回彈至穩(wěn)定角度0°。這一過程中,入口壓力基本不變,到穩(wěn)定角度0°后,壓力繼續(xù)降低直至0。

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