Rexroth力士樂DBE 10-5X315XYG24K4M溢流閥

1.電動調(diào)節(jié)閥執(zhí)行機構(gòu)的故障特征

（1）調(diào)試階段故障

調(diào)節(jié)閥電動執(zhí)行機構(gòu)的故障問題比較復(fù)雜，其特征是設(shè)計、制造、安裝及管理等諸多問題交織在一起，常見的故障有泄漏嚴(yán)重、速度難以調(diào)整穩(wěn)定、臟物或油污使傳動機構(gòu)卡澀或動作失靈。某些組件漏裝或裝錯彈簧、密封件，有些屬于設(shè)計欠妥，元件選擇不當(dāng)，動作不平穩(wěn)，定位精度差等，對待這類故障、應(yīng)耐心細致、慎重處理，逐一排除。

（2）運行初期和中期故障

調(diào)試后進入正常生產(chǎn)階段的故障特征是少數(shù)密封件由于裝配質(zhì)量和材料質(zhì)問題短期內(nèi)損壞而漏油，同時粘除在管壁、孔壁上的毛刺、粘沙、雜質(zhì)和臟物脫落導(dǎo)致某些元件工作不穩(wěn)定，通常在遠行中期，系統(tǒng)元件/組件處于運行工作狀態(tài)，故障率較低。

（3)運行后期故障

調(diào)節(jié)閥電動執(zhí)行機構(gòu)運行一段時間后，各類元件/組件因工作頻率和負載條件的差異，各易損件先后磨損超標(biāo)，這個階段的故障特征是位置反饋接觸不良，定位精度差，穩(wěn)定性下降，效率顯著降低，故障率逐漸增加。這是應(yīng)一體檢查，更換失效部作、一體修復(fù)故障 ，否則將給運行人員帶來很多不便，甚至嚴(yán)重影響機組的正常調(diào)節(jié)和控制。

2.偶發(fā)性、突發(fā)性故障

電動調(diào)節(jié)閥這類故障在時間上表現(xiàn)為偶然突變，故障區(qū)域及產(chǎn)生原因較為明顯，由非人為和人為因素造成，如位置反饋器件接觸不良，剎車片磨損及“抱死”、零部件損壞、線圈燒壞、密封件失效等。

Rexroth力士樂比例溢流閥 力士樂DBE10比例閥

R900470222 DBE 10-3X/100XYG24Z4

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R900968138 DBE 10-3X/315XYG24NK4

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0811402108 DBE 10X-1X/80G24-8NZ4M