為你介紹FESTO電磁閥內漏故障解決方法

為你介紹FESTO電磁閥內(nei)漏(lou)故障(zhang)解決方法

1,執(zhi)行機構零位設定的(de)是不(bu)準(zhun)確的(de),沒(mei)有(you)達(da)到閥門(men)關(guan)閉位置.調整:1)手動(dong)閥關(guan)閉(一(yi)定要確保你已經*關(guan)閉); 2),然后(hou)被迫手動(dong)關(guan)閉閥門(men),用一(yi)點點的(de)努力,以(yi)加強(qiang)行動(dong)為準(zhun); 3),再往回螺絲(閥門(men)開啟(qi)方向)半圈; 4),然后(hou)調整限制(zhi). 本(ben)文來自織夢

2,FESTO電磁(ci)閥閥門是推動(dong)封閉類型,執(zhi)行(xing)機(ji)構(gou)的(de)(de)推力(li)不夠大(da),沒有壓力(li)調試時(shi)是很容易達到*閉合(he),下推力(li)無法克服的(de)(de)推力(li)液體(ti),所以(yi)過的(de)(de)地方.解(jie)決辦法:更換執(zhi)行(xing)機(ji)構(gou)的(de)(de)推力(li),或平(ping)衡(heng)閥芯,減少媒(mei)體(ti)的(de)(de)不平(ping)衡(heng).

3,FESTO電(dian)(dian)磁閥(fa)(fa)內(nei)漏的(de)(de)閥(fa)(fa)門(men)(men)制造(zao)(zao)(zao)商的(de)(de)制造(zao)(zao)(zao)質量,在過程的(de)(de)嚴(yan)格控制閥(fa)(fa)門(men)(men)材料,工(gong)(gong)藝(yi),裝(zhuang)配工(gong)(gong)藝(yi),造(zao)(zao)(zao)成密(mi)封面研(yan)磨失敗(bai),凹坑,砂(sha)眼(yan)和其他有缺陷的(de)(de)產品(pin)造(zao)(zao)(zao)成的(de)(de)不*拆除,導(dao)致電(dian)(dian)動控制閥(fa)(fa)泄漏.解決辦法:密(mi)封面再加工(gong)(gong).

4,傳統的控(kong)制方法(fa),控(kong)制電動(dong)調(diao)節閥(fa)(fa)電動(dong)調(diao)節閥(fa)(fa)的閥(fa)(fa)門(men)(men)內漏(lou)的影(ying)響(xiang)是一個閥(fa)(fa)門(men)(men)限(xian)位開關(guan),過轉(zhuan)矩的機(ji)械式(shi)開關(guan)和其(qi)他控(kong)制方法(fa),這些(xie)控(kong)制元素由環境(jing)溫度的影(ying)響(xiang),壓力,濕度,造(zao)成閥(fa)(fa)門(men)(men)定位是不準確的,彈簧疲勞,客觀因素的非均勻(yun)的熱膨脹系數,在(zai)電動(dong)調(diao)節閥(fa)(fa)內漏(lou)造(zao)成的.解(jie)決辦法(fa):重(zhong)新調(diao)整的極限(xian).

5,調(diao)(diao)試(shi)FESTO電(dian)(dian)(dian)(dian)(dian)磁(ci)閥(fa)內(nei)漏(lou),加工(gong),裝配過(guo)程(cheng)(cheng)的(de)(de)(de)(de)影響,廣泛的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)現象(xiang),打(da)開(kai)(kai)(kai)手(shou)動(dong)(dong)(dong)(dong)(dong)關(guan)閉(bi)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)控制(zhi)閥(fa),如通(tong)過(guo)的(de)(de)(de)(de)行(xing)動(dong)(dong)(dong)(dong)(dong)上(shang),下(xia)限(xian)(xian)(xian)開(kai)(kai)(kai)關(guan)位(wei)(wei)置(zhi)(zhi)所造(zao)成的(de)(de)(de)(de)問題電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)的(de)(de)(de)(de)行(xing)程(cheng)(cheng)調(diao)(diao)?整的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)或 閥(fa)門(men)(men)的(de)(de)(de)(de)開(kai)(kai)(kai)度(du)小(xiao),關(guan)系松散,不(bu)理(li)想的(de)(de)(de)(de)狀態(tai);電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)控制(zhi)閥(fa)的(de)(de)(de)(de)行(xing)程(cheng)(cheng)調(diao)(diao)??整,引起轉矩開(kai)(kai)(kai)關(guan)保護動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo);如果切換(huan)動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)值調(diao)(diao)整后(hou)的(de)(de)(de)(de)扭矩較大減速傳(chuan)動(dong)(dong)(dong)(dong)(dong)崩(beng)潰或損壞閥(fa)門(men)(men),甚至 電(dian)(dian)(dian)(dian)(dian)機燒(shao)毀(hui)事故.為了解決這個(ge)問題,通(tong)常的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)手(shou)動(dong)(dong)(dong)(dong)(dong)調(diao)(diao)試(shi)時,電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)控制(zhi)閥(fa)搖(yao)到底,下(xia)井開(kai)(kai)(kai)幕(mu)(mu)(mu)方(fang)向動(dong)(dong)(dong)(dong)(dong)搖(yao)了一(yi)(yi)圈,設置(zhi)(zhi)下(xia)限(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)門(men)(men)開(kai)(kai)(kai)關(guan)位(wei)(wei)置(zhi)(zhi),然后(hou)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)控制(zhi)閥(fa)打(da)開(kai)(kai)(kai) 到全(quan)開(kai)(kai)(kai)位(wei)(wei)置(zhi)(zhi)設置(zhi)(zhi)一(yi)(yi)個(ge)上(shang)限(xian)(xian)(xian)開(kai)(kai)(kai)關(guan)位(wei)(wei)置(zhi)(zhi),使(shi)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)手(shou)動(dong)(dong)(dong)(dong)(dong)關(guan)閉(bi)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)門(men)(men)開(kai)(kai)(kai)幕(mu)(mu)(mu)和(he)閉(bi)幕(mu)(mu)(mu)的(de)(de)(de)(de)自由運(yun)作(zuo)(zuo),但(dan)實際(ji)上(shang)造(zao)成電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)門(men)(men)泄漏(lou)后(hou)不(bu)會(hui)出現電(dian)(dian)(dian)(dian)(dian)熱開(kai)(kai)(kai)的(de)(de)(de)(de)現象(xiang).電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)調(diao)(diao)整的(de)(de)(de)(de)理(li)想,由于行(xing)動(dong)(dong)(dong)(dong)(dong)限(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)的(de)(de)(de)(de)位(wei)(wei)置(zhi)(zhi)是相對固定的(de)(de)(de)(de),在操作(zuo)(zuo)閥(fa)門(men)(men)閥(fa)控制(zhi)媒(mei)體的(de)(de)(de)(de)不(bu)斷侵蝕,磨損和(he)撕裂(lie)會(hui)造(zao)成內(nei)漏(lou)閥(fa)門(men)(men)關(guan)閉(bi)不(bu)嚴的(de)(de)(de)(de)現象(xiang).解決辦(ban)法:重(zhong)新調(diao)(diao)整的(de)(de)(de)(de)極(ji)限(xian)(xian)(xian).

6,FESTO電磁(ci)閥(fa)(fa)選(xuan)擇錯誤(wu)造(zao)成(cheng)的(de)(de)(de)閥(fa)(fa)氣(qi)(qi)蝕(shi)(shi)由電動控制閥(fa)(fa)氣(qi)(qi)蝕(shi)(shi)和壓(ya)差(cha)是(shi)大(da)(da)于(yu)臨界壓(ya)力差(cha)的(de)(de)(de)實際閥(fa)(fa)門的(de)(de)(de)壓(ya)力有(you)關的(de)(de)(de)內部泄漏(lou)(lou) 造(zao)成(cheng)腐蝕(shi)(shi)的(de)(de)(de)C空(kong)化氣(qi)(qi)泡(pao)時(shi)產生(sheng)空(kong)的(de)(de)(de)巨大(da)(da)能量大(da)(da)量釋放爆裂,空(kong)化過程中座,插頭(tou)和節(jie)(jie)流裝置上的(de)(de)(de)一個巨大(da)(da)的(de)(de)(de)破壞性(xing)影響,通用(yong)閥(fa)(fa)門空(kong)化條件,運行三(san)個月甚至很短的(de)(de)(de) 時(shi)間內.遭受嚴重(zhong)的(de)(de)(de)空(kong)泡(pao)腐蝕(shi)(shi)閥(fa)(fa)門,導致高達30％的(de)(de)(de)額定流量,這是(shi)無(wu)法彌補(bu)的(de)(de)(de)閥(fa)(fa)座泄漏(lou)(lou),電動門的(de)(de)(de)不同用(yong)途,有(you)不同的(de)(de)(de)具體技術要(yao)求,按照系統電動調節(jie)(jie)閥(fa)(fa),是(shi) 一種合理的(de)(de)(de)選(xuan)擇在這個過程中是(shi)的(de)(de)(de).解決方案:工藝改進,多級(ji)降壓(ya)套筒閥(fa)(fa)的(de)(de)(de)選(xuan)擇.

7,介質的(de)(de)(de)侵(qin)蝕(shi),老化的(de)(de)(de)電(dian)動(dong)調(diao)節(jie)閥(fa)調(diao)整后的(de)(de)(de)一(yi)定(ding)時(shi)間的(de)(de)(de)運行(xing)(xing)期(qi)(qi)間內部泄(xie)漏(lou)所(suo)造成的(de)(de)(de)電(dian)控閥(fa),閥(fa)的(de)(de)(de)氣蝕(shi)和(he)媒體的(de)(de)(de)閥(fa)芯(xin)和(he)閥(fa)座磨損侵(qin)蝕(shi),老化的(de)(de)(de)內部組(zu)件(jian)因為發生的(de)(de)(de)電(dian)動(dong)調(diao)節(jie)閥(fa)行(xing)(xing)程過大現象(xiang)的(de)(de)(de)電(dian)動(dong)調(diao)節(jie)閥(fa)關(guan)閉(bi)不嚴(yan),造成電(dian)動(dong)調(diao)節(jie)閥(fa)的(de)(de)(de)泄(xie)漏(lou)定(ding)量,隨著時(shi)間的(de)(de)(de)推移FESTO電(dian)磁閥(fa)的(de)(de)(de)泄(xie)漏(lou)現象(xiang)將越來越嚴(yan)重(zhong).解決辦法:重(zhong)新調(diao)整的(de)(de)(de)執(zhi)行(xing)(xing)機構,并定(ding)期(qi)(qi)進行(xing)(xing)維護,可(ke)以糾正(zheng).

過接受調節(jie)(jie)控制(zhi)單元(yuan)輸出的控制(zhi)信號，借助(zhu)動(dong)力(li)操作(zuo)去改變介(jie)(jie)質流量、壓(ya)力(li)、溫度(du)、液位等工藝參數(shu) 的最終控制(zhi)元(yuan)件。一般由執行(xing)機(ji)構(gou)和(he)閥(fa)門組成。如果按(an)行(xing)程特(te)(te)(te)點(dian)，調節(jie)(jie)閥(fa)可(ke)分(fen)為直行(xing)程和(he)角行(xing)程；按(an)其所配執行(xing)機(ji)構(gou)使用的動(dong)力(li)，可(ke)以分(fen)為氣動(dong)調節(jie)(jie)閥(fa)、電(dian)動(dong)調節(jie)(jie) 閥(fa)、液動(dong)調節(jie)(jie)閥(fa)三種(zhong)；按(an)其功能和(he)特(te)(te)(te)性(xing)分(fen)為線性(xing)特(te)(te)(te)性(xing)，等百分(fen)比特(te)(te)(te)性(xing)及拋物線特(te)(te)(te)性(xing)三種(zhong)。調節(jie)(jie)閥(fa)適用于空氣、水、蒸汽(qi)、各種(zhong)腐蝕性(xing)介(jie)(jie)質、泥漿、油品等介(jie)(jie)質。

FESTO電(dian)磁閥(fa)用于調(diao)節(jie)介質(zhi)(zhi)的(de)流量、壓力(li)(li)和液位。根據PLC系(xi)(xi) 統(tong)控制(zhi)信號(hao)(hao)(hao)，來調(diao)節(jie)閥(fa)門的(de)開度，并反饋一個當前(qian)值(zhi)給PLC系(xi)(xi)統(tong)，PLC系(xi)(xi)統(tong)將給定信號(hao)(hao)(hao)與反饋信號(hao)(hao)(hao)作比較，當有偏(pian)差信號(hao)(hao)(hao)時再判斷是正(zheng)或是負(fu)偏(pian)差，決定電(dian)機(ji)的(de) 正(zheng)向旋轉(zhuan)(zhuan)或是反向旋轉(zhuan)(zhuan)，直到給定信號(hao)(hao)(hao)與反饋信號(hao)(hao)(hao)一致時，才停(ting)止對(dui)電(dian)機(ji)的(de)驅動(dong)。從而(er)對(dui)介質(zhi)(zhi)流量、壓力(li)(li)和液位進(jin)行調(diao)節(jie)，以達(da)到PLC系(xi)(xi)統(tong)預先設(she)定的(de)理想值(zhi)。

FESTO電磁閥(fa)(fa)(fa)(fa)流通(tong)能力Cv值是(shi)電動(dong)(dong)調(diao)節(jie)閥(fa)(fa)(fa)(fa)的主要參數之一，電動(dong)(dong)調(diao)節(jie)閥(fa)(fa)(fa)(fa)流通(tong)能力的定義(yi)為：當電動(dong)(dong)調(diao)節(jie)閥(fa)(fa)(fa)(fa)全開(kai)時，閥(fa)(fa)(fa)(fa)兩端壓差為0.1MPa，流體密度(du)為1g/cm3時，每 小(xiao)時流經電動(dong)(dong)調(diao)節(jie)閥(fa)(fa)(fa)(fa)的流量(liang)數，稱(cheng)為流通(tong)能力，也稱(cheng)流量(liang)系(xi)數，以(yi)Cv表示，單位為t/h。FESTO電磁閥(fa)(fa)(fa)(fa)的流量(liang)特(te)性(xing)(xing)，是(shi)在(zai)閥(fa)(fa)(fa)(fa)兩端壓差保持(chi)恒(heng)定的條件下，介質(zhi)流經 電動(dong)(dong)調(diao)節(jie)閥(fa)(fa)(fa)(fa)的相對(dui)流量(liang)與它的開(kai)度(du)之間關系(xi)。電動(dong)(dong)調(diao)節(jie)閥(fa)(fa)(fa)(fa)的流量(liang)特(te)性(xing)(xing)有線性(xing)(xing)特(te)性(xing)(xing)，等(deng)百分比(bi)特(te)性(xing)(xing)及拋物線特(te)性(xing)(xing)三種。

三種注(zhu)量特性的意義如下：

（1）等百分比特性（對(dui)(dui)數）等百分比特性的相對(dui)(dui)行程(cheng)和相對(dui)(dui)流量(liang)不成直(zhi)線關系，在(zai)行程(cheng)的每一(yi)點(dian)(dian)(dian)上單位行程(cheng)變化(hua)所引起(qi)的流量(liang)的變化(hua)與(yu)此(ci)點(dian)(dian)(dian)的流量(liang)成正(zheng)比，流量(liang)變 化(hua)的百分比是(shi)(shi)相等的。所以它的優(you)點(dian)(dian)(dian)是(shi)(shi)流量(liang)小時，流量(liang)變化(hua)小，流量(liang)大(da)時，則(ze)流量(liang)變化(hua)大(da)，也(ye)就是(shi)(shi)在(zai)不同開度(du)上，具有(you)相同的調(diao)節精度(du)。

（2）FESTO電磁閥(fa)線(xian)性特性（線(xian)性）線(xian)性特性的相(xiang)對(dui)(dui)(dui)行程和(he)相(xiang)對(dui)(dui)(dui)流(liu)量(liang)成直線(xian)關系。單位行程的變(bian)化所引起的流(liu)量(liang)變(bian)化是不變(bian)的。流(liu)量(liang)大時(shi)，流(liu)量(liang)相(xiang)對(dui)(dui)(dui)值變(bian)化小，流(liu)量(liang)小時(shi)，則流(liu)量(liang)相(xiang)對(dui)(dui)(dui)值變(bian)化大。