調(diao)節閥的(de)(de)執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi)分為氣(qi)動(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi)和(he)電動(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi)2大類，氣(qi)動(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi)是以(yi)壓縮(suo)氣(qi)源為驅(qu)動(dong)力，配合(he)閥門定位器(qi)(qi)的(de)(de)控制，實(shi)現(xian)對(dui)調(diao)節閥全行(xing)(xing)程(cheng)的(de)(de)調(diao)節效果(guo)。 電動(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi)是以(yi)伺(si)服電機為驅(qu)動(dong)源，受控于4-20mA或1-5VDC信號，實(shi)現(xian)去調(diao)節閥全行(xing)(xing)程(cheng)的(de)(de)控制。常(chang)用(yong)的(de)(de)有氣(qi)動(dong)薄(bo)膜執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi),381型電動(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi),PSL型電動(dong)執(zhi)(zhi)(zhi)行(xing)(xing)器(qi)(qi)。
附件有閥門定位器,氣(qi)源三聯件,行程限位開關,保位閥等，以實現對調節閥的控制和(he)信號的反饋。
