電(dian)動(dong)(dong)執(zhi)(zhi)行(xing)器(qi)(qi)以(yi)220VAC為動(dong)(dong)力，承受0~10mA或4~20mA D.C操控(kong)(kong)信(xin)(xin)號并輸出(chu)額定的力矩和(he)(he)與操控(kong)(kong)信(xin)(xin)號相(xiang)對應的角位(wei)(wei)移(yi)，與閥門、風門組(zu)合。各種(zhong)閥門電(dian)動(dong)(dong)執(zhi)(zhi)行(xing)器(qi)(qi)、風門電(dian)動(dong)(dong)執(zhi)(zhi)行(xing)器(qi)(qi)等組(zu)織完結主動(dong)(dong)調理使(shi)命(ming)。現在(zai)我們使(shi)用的電(dian)動(dong)(dong)執(zhi)(zhi)行(xing)器(qi)(qi)，基本上(shang)是由(you)動(dong)(dong)力部(bu)(bu)件和(he)(he)位(wei)(wei)置定位(wei)(wei)器(qi)(qi)兩大部(bu)(bu)分組(zu)成(cheng)。其中動(dong)(dong)力部(bu)(bu)件主要由(you)電(dian)動(dong)(dong)機(ji)、減(jian)速器(qi)(qi)、力矩行(xing)程(cheng)限(xian)制器(qi)(qi)、開(kai)關控(kong)(kong)制箱、手輪和(he)(he)機(ji)械限(xian)位(wei)(wei)裝置以(yi)及位(wei)(wei)置發送器(qi)(qi)等組(zu)成(cheng)，電(dian)動(dong)(dong)執(zhi)(zhi)行(xing)機(ji)構各部(bu)(bu)分作用簡述如(ru)下：
1、電(dian)(dian)動機(ji)：電(dian)(dian)動機(ji)是(shi)特(te)種單相(xiang)或(huo)三(san)相(xiang)交流(liu)異步電(dian)(dian)動機(ji)，具有(you)高啟(qi)(qi)動力矩、低啟(qi)(qi)動電(dian)(dian)流(liu)和較小的轉動慣量，因而有(you)較好的伺服特(te)性。
2、減速器(qi)：角行(xing)(xing)(xing)程(cheng)電動(dong)(dong)(dong)執行(xing)(xing)(xing)機構(gou)采用行(xing)(xing)(xing)星減速加(jia)渦(wo)輪渦(wo)桿(gan)傳(chuan)動(dong)(dong)(dong)機構(gou)，既(ji)有較高(gao)的(de)機械(xie)效率，又具有機械(xie)自(zi)鎖特性。直(zhi)行(xing)(xing)(xing)程(cheng)電動(dong)(dong)(dong)執行(xing)(xing)(xing)機構(gou)的(de)減速器(qi)由多(duo)回轉電動(dong)(dong)(dong)執行(xing)(xing)(xing)機構(gou)減速器(qi)配(pei)接絲桿(gan)螺母傳(chuan)動(dong)(dong)(dong)裝置組成(cheng)。
3、力(li)矩(ju)行程(cheng)限(xian)制(zhi)器(qi)：它是一個設置在減速器(qi)內的標(biao)準單元，由過力(li)矩(ju)保(bao)護機(ji)構、行程(cheng)控制(zhi)機(ji)構(電氣限(xian)位(wei))、位(wei)置傳感器(qi)及(ji)接線端(duan)子等組成。
4、開關(guan)控(kong)制箱：在開關(guan)控(kong)制箱內裝有PM電子位置(zhi)定位器。
5、手(shou)輪：在(zai)故障狀態(tai)和(he)調(diao)試過(guo)程中，可通過(guo)轉動手(shou)輪來實現手(shou)動就地操作。
6、機(ji)械(xie)限(xian)(xian)(xian)位(wei)裝置(zhi)：主要用于故障時(shi)以及防止手動(dong)操(cao)作時(shi)超過(guo)極限(xian)(xian)(xian)位(wei)置(zhi)保護。電(dian)動(dong)執行(xing)器(qi)的(de)機(ji)械(xie)限(xian)(xian)(xian)位(wei)采用內(nei)置(zhi)扇形渦輪(lun)限(xian)(xian)(xian)位(wei)結構(gou)(gou)，外形體積(ji)小，限(xian)(xian)(xian)位(wei)可(ke)靠;直行(xing)程電(dian)動(dong)執行(xing)機(ji)構(gou)(gou)的(de)機(ji)械(xie)限(xian)(xian)(xian)位(wei)采用內(nei)置(zhi)擋塊型限(xian)(xian)(xian)位(wei)結構(gou)(gou)，可(ke)十分有(you)效(xiao)地保護閥座、閥桿、閥芯。
電動(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器專(zhuan)業(ye)生產廠家在全國有(you)很多，在天(tian)津(jin)地區主要有(you)天(tian)津(jin)伯納德自控設備(bei)執(zhi)(zhi)(zhi)行(xing)(xing)器、天(tian)津(jin)津(jin)達執(zhi)(zhi)(zhi)行(xing)(xing)器、天(tian)津(jin)邁捷孚電動(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器等(deng)，進口電動(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器主要有(you)西門(men)子電動(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器、auma執(zhi)(zhi)(zhi)行(xing)(xing)器等(deng)。高信譽的廠家產品(pin)質(zhi)量具(ju)有(you)保障(zhang)，客戶在購買時要認真選取。
