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REXROTH二位四通換向閥4WE6W6X/EG24N9K4

現場(chǎng)快速判斷電磁閥好壞方法

　　一、首先檢查是不是電磁閥電磁線(xiàn)圈故障？

　　在DCS上給二位閥給開(kāi)或者關(guān)的信號，然后看電磁閥是否得失電，一般在現場(chǎng)聽(tīng)聲音即可。

　　若聽(tīng)不到，那線(xiàn)圈肯定是有問(wèn)題，至于電磁閥本身是不是有問(wèn)題？（下面解釋?zhuān)?/p>

　　如果電磁線(xiàn)圈問(wèn)題，首先檢查接線(xiàn)，看是不是有虛接，或者有短路現象，如果線(xiàn)路上沒(méi)問(wèn)題就是電磁閥線(xiàn)圈燒壞，可拆下電磁閥的接線(xiàn)，用萬(wàn)用表測量，如果開(kāi)路，則電磁閥線(xiàn)圈燒壞。原因有線(xiàn)圈受潮，引起絕緣不好而漏磁，造成線(xiàn)圈內電流過(guò)大而燒毀，因此要防止雨水進(jìn)入電磁閥。此外，彈簧過(guò)硬，反作用力過(guò)大，線(xiàn)圈匝數太少，吸力不夠也可使得線(xiàn)圈燒毀。

　　二、若線(xiàn)圈是好的，那就是電磁閥本身的問(wèn)題。

　　一般可以在手動(dòng)調節處用一字起由1調到0位置，使閥打開(kāi)，若是能打開(kāi)就說(shuō)明的確是線(xiàn)圈的問(wèn)題，換個(gè)線(xiàn)圈就可以了，若打不開(kāi)，就拆電磁閥，看是不是閥芯卡住，或者是有雜粒堵，清洗正確應該用CCL4，但是考慮到現場(chǎng)沒(méi)有條件的話(huà)，可以用汽油，實(shí)在沒(méi)有用水也可以，清洗后可以用現場(chǎng)儀表氣進(jìn)行吹干，拆時(shí)務(wù)必記好各部件的順序，不注意的話(huà)，裝的時(shí)候很容易出錯，順序記錯就算你清洗好電磁閥，即使電磁閥已經(jīng)通了也還是打不開(kāi)的！

電磁閥（Electromagnetic valve）是用電磁控制的工業(yè)設備,是用來(lái)控制流體的自動(dòng)化基礎元件,屬于執行器,并不限于液壓,氣動(dòng)。用在工業(yè)控制系統中調整介質(zhì)的方向,流量,速度和其他的參數。電磁閥可以配合不同的電路來(lái)實(shí)現預期的控制,而控制的精度和靈活性都能夠保證。電磁閥有很多種,不同的電磁閥在控制系統的不同位置發(fā)揮作用,最常用的是單向閥,安全閥,方向控制閥,速度調節閥等。

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