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電動閥出現內漏的原因

人氣:0發表時間:2019/12/10 23:53:05

1、電動閥門介質的腐蝕導致電控閥老化引起內部泄漏

電動閥調整一段時間后,由于汽蝕和沖刷的介質、閥芯和閥座磨損、內部部件老化、功率調節權限過大等原因,電動閥關閉不嚴,電動閥泄漏量增加。隨著時間的推移,電動閥的泄漏將越來越嚴重。解決方案:調整執行機構并進行定期維護和校準。

2。電動閥選型誤差引起的氣蝕和內漏

氣蝕和壓差,當實際壓差閥大于產生氣蝕的臨界壓力差時,會產生氣蝕,氣蝕過程中產生泡沫破裂和大量能量釋放,對閥座和閥芯損傷較大,節流部件通用閥在氣蝕情況下運行不超過3個月,甚至時間較短,氣蝕嚴重,高氣門座泄漏可達額定流量的30%以上,無法彌補。因此,不同應用的電動閥門有著不同的技術要求,根據系統過程選擇合理的電動調節閥是非常重要的。解決方案:工藝改進,可選用多級減壓閥或套筒控制閥。


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