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部分回轉整體智能開關型電動執行機構

 結構原理：

1、組成部分編輯

MW系(xi)列角行程調節(jie)電動(dong)執行機(ji)構由動(dong)力(li)部(bu)件(jian)和(he)位(wei)置(zhi)定位(wei)器(qi)（PM-2控(kong)制(zhi)(zhi)板）兩(liang)大部(bu)分組成。其中(zhong)動(dong)力(li)部(bu)件(jian)主要(yao)由電動(dong)機(ji)、減速器(qi)、力(li)矩行程限(xian)(xian)制(zhi)(zhi)器(qi)、開關控(kong)制(zhi)(zhi)箱、手輪和(he)機(ji)械(xie)限(xian)(xian)位(wei)裝(zhuang)置(zhi)以及位(wei)置(zhi)發送器(qi)等組成，其各部(bu)分作用簡述(shu)如下(xia)：

2、電動機

電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)是(shi)特種單相或三相交(jiao)流異步電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)，具有(you)高啟動(dong)(dong)(dong)(dong)力矩、低啟動(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)流和(he)較(jiao)小的轉動(dong)(dong)(dong)(dong)慣(guan)量，因(yin)而有(you)較(jiao)好的伺服特性。在(zai)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)定子內(nei)部裝有(you)熱敏開(kai)關(guan)（詳(xiang)見圖3所示）做過熱保護，當電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)出現異常過熱（內(nei)部溫度(du)超過130℃）時該開(kai)關(guan)將控制電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)的電(dian)(dian)(dian)(dian)(dian)路(lu)斷(duan)開(kai)以保護電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)和(he)執行機(ji)(ji)構(gou)(gou)，當電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)冷卻以后(hou)開(kai)關(guan)恢復(fu)接通，電(dian)(dian)(dian)(dian)(dian)路(lu)恢復(fu)工作。為了克服慣(guan)性惰走，調(diao)節型(xing)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)執行機(ji)(ji)構(gou)(gou)的電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)控制電(dian)(dian)(dian)(dian)(dian)路(lu)均有(you)電(dian)(dian)(dian)(dian)(dian)制動(dong)(dong)(dong)(dong)功(gong)能。

部分回轉整體智能開關型電動執行機構工作環境(jing)和(he)主要(yao)技術參(can)數：

1電源：常規，三相380V（50Hz）

特殊(shu)，三相660V、415V（50Hz、60Hz）；

單相220V、110V（50Hz、60Hz）

2工作環境

2.1環境(jing)溫(wen)度(du)：-20~+60℃（特殊訂貨(huo)-40~+80℃）

2.2相對濕度(du)：≤95%（25℃時）

2.3防護類型

2.3.1戶(hu)外(wai)型：用于無(wu)易燃、易爆和無(wu)腐蝕性介質的場所；

2.3.2隔(ge)爆型(xing)：有dI和dIIBT4兩種(zhong)，dI適(shi)用于(yu)煤礦非采掘工作面；dIIBT4用于(yu)工廠(chang)，適(shi)用于(yu)環境(jing)為(wei)IIA、IIB級T1-T4組的爆炸性氣體混合物。（詳見(jian)GB3836.1）

2.4防護等級：IP55（特(te)殊訂(ding)貨IP65、IP67）

2.5工作制：短時10分(fen)鐘（特殊訂貨30分(fen)鐘）