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The cause and process of regulator valve deterioration
The author: Time:2020/5/21

    調(diào)節(jié)閥的閥桿是一個(gè)移動(dòng)部件,它與填料之間總有一定摩擦。當(dāng)閥門的填料函壓得過緊或長期未潤滑時(shí),干摩擦力很大,膜頭上較小的氣壓變化推不動(dòng)閥桿。這時(shí)會(huì)產(chǎn)生正反行程的變差,即在閥桿上升和下降時(shí)對(duì)應(yīng)于同樣閥桿位置的氣環(huán)一樣。調(diào)節(jié)閥變差增大,對(duì)調(diào)節(jié)過程會(huì)產(chǎn)生不良影響,即使是時(shí)間常數(shù)和時(shí)滯都很小的流量過程,調(diào)節(jié)過程也會(huì)出現(xiàn)明顯的間隔變化。對(duì)于時(shí)間常數(shù)和時(shí)滯大的溫度過程,控制作用則更不及時(shí),會(huì)引起持續(xù)振蕩。
    上述就是關(guān)于調(diào)節(jié)閥變差的介紹,希望對(duì)你會(huì)有所幫助。并且,河北西博閥門是石家莊一家專業(yè)經(jīng)銷氣動(dòng)調(diào)節(jié)閥、電動(dòng)調(diào)節(jié)閥、球閥、切斷閥等系列產(chǎn)品。如有產(chǎn)品方面的需求,可電話進(jìn)行咨詢。

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