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一體化防爆閥(fa)門電動裝置400NM執行器

一(yi)體(ti)化結構（通常稱為整體(ti)型(xing)）：控制單元與電(dian)動執行器封裝成一體(ti)，無需外配控制單元即可(ke)現實就(jiu)(jiu)地操作，遠程只需輸出相(xiang)關(guan)控制信(xin)息就(jiu)(jiu)可(ke)對其進行(xing)操作。

此結構(gou)的(de)優(you)點(dian)是方便(bian)系統(tong)整體(ti)安裝，減少接線及(ji)安裝費(fei)用，容易診斷并(bing)排(pai)除故障。但(dan)傳統(tong)的(de)一體(ti)化(hua)結構(gou)產(chan)品(pin)也有很多不完善的(de)地(di)方，所以產(chan)生(sheng)了智能電動執行器(qi)，關于智(zhi)能電(dian)動執行器后(hou)面將再做說明。

一體化防爆閥門電動裝置400NM執行器

1、電動機：戶(hu)外型采(cai)用YDF型，隔爆(bao)型采(cai)用YBDF型閥門三相(xiang)異步電動機。

2、減速機構(gou)：由一對直齒輪和蝸輪副兩級傳(chuan)動(dong)組成(cheng)。電動(dong)機的動(dong)力經(jing)減速機構(gou)傳(chuan)遞給輸出軸。 

3、力矩控(kong)制(zhi)機構(gou)：當輸(shu)(shu)出軸(zhou)(zhou)上受到一定轉(zhuan)矩后(hou)，蝸(gua)桿除(chu)旋轉(zhuan)外還產生軸(zhou)(zhou)向位(wei)移，帶動(dong)曲(qu)拐，曲(qu)拐直接(jie)（或通過撞(zhuang)塊）帶動(dong)支架產生角位(wei)移。當輸(shu)(shu)出軸(zhou)(zhou)上的轉(zhuan)矩增大(da)到整定轉(zhuan)矩時，則支架產生的位(wei)移量使微(wei)動(dong)開(kai)關動(dong)作，從而切斷電機電源，電動(dong)機停轉(zhuan)。以(yi)此實(shi)現對電動(dong)裝置輸(shu)(shu)出轉(zhuan)矩的控(kong)制(zhi)，達到保護電動(dong)閥門的目的。

4、行程(cheng)(cheng)控(kong)制(zhi)(zhi)(zhi)機(ji)構： 采用(yong)十進制(zhi)(zhi)(zhi)計(ji)數器(qi)(qi)原理(li)，又稱為(wei)計(ji)數器(qi)(qi)，控(kong)制(zhi)(zhi)(zhi)精(jing)度高，其工作原理(li)為(wei)：由減速箱內(nei)的(de)一對(dui)大小傘齒(chi)輪(lun)(lun)帶(dai)動中(zhong)傳小齒(chi)輪(lun)(lun)，再帶(dai)動行程(cheng)(cheng)控(kong)制(zhi)(zhi)(zhi)機(ji)構工作。如果(guo)行程(cheng)(cheng)控(kong)制(zhi)(zhi)(zhi)器(qi)(qi)按(an)閥門開、關(guan)(guan)的(de)位置已調(diao)整(zheng)(zheng)好，當控(kong)制(zhi)(zhi)(zhi)器(qi)(qi)隨輸出軸(zhou)轉(zhuan)(zhuan)(zhuan)動到預(yu)先調(diao)整(zheng)(zheng)好的(de)位置（圈數）時，則凸輪(lun)(lun)將轉(zhuan)(zhuan)(zhuan)動90°，迫使微動開關(guan)(guan)動作，切斷電動機(ji)電源，電動機(ji)停轉(zhuan)(zhuan)(zhuan)，從(cong)而實現對(dui)電動裝(zhuang)置行程(cheng)(cheng)（轉(zhuan)(zhuan)(zhuan)圈數）的(de)控(kong)制(zhi)(zhi)(zhi)。注1：為(wei)了控(kong)制(zhi)(zhi)(zhi)較(jiao)多轉(zhuan)(zhuan)(zhuan)圈數的(de)閥門，可調(diao)整(zheng)(zheng)凸輪(lun)(lun)轉(zhuan)(zhuan)(zhuan)180°或270°再壓(ya)迫微動開關(guan)(guan)動作。

5、開(kai)(kai)(kai)度(du)(du)指(zhi)示(shi)(shi)(shi)機構：輸入齒(chi)輪(lun)(lun)由(you)計數器(qi)個(ge)位齒(chi)輪(lun)(lun)帶動(dong)，經(jing)減速后，指(zhi)示(shi)(shi)(shi)盤隨閥(fa)門的開(kai)(kai)(kai)關(guan)過程(cheng)同(tong)時(shi)轉(zhuan)(zhuan)動(dong)，以指(zhi)示(shi)(shi)(shi)閥(fa)門的開(kai)(kai)(kai)關(guan)量，電(dian)位器(qi)軸和(he)指(zhi)示(shi)(shi)(shi)盤同(tong)步轉(zhuan)(zhuan)動(dong)，供遠傳開(kai)(kai)(kai)度(du)(du)指(zhi)示(shi)(shi)(shi)用(yong)(yong)。移動(dong)轉(zhuan)(zhuan)圈數調(diao)整齒(chi)輪(lun)(lun)可以改變(bian)轉(zhuan)(zhuan)圈數。開(kai)(kai)(kai)度(du)(du)指(zhi)示(shi)(shi)(shi)機構內設一微(wei)動(dong)開(kai)(kai)(kai)關(guan)和(he)凸輪(lun)(lun)，當電(dian)動(dong)裝置運轉(zhuan)(zhuan)時(shi)，旋轉(zhuan)(zhuan)凸輪(lun)(lun)周期性地使(shi)微(wei)動(dong)開(kai)(kai)(kai)關(guan)動(dong)作(zuo)，其頻率為輸出軸轉(zhuan)(zhuan)動(dong)一圈動(dong)作(zuo)一次或二次，可供閃光信號等(deng)使(shi)用(yong)(yong)。

6、手(shou)(shou)(shou)(shou)—電動(dong)(dong)(dong)切(qie)(qie)(qie)換(huan)(huan)機構(gou)：為(wei)(wei)半自(zi)動(dong)(dong)(dong)切(qie)(qie)(qie)換(huan)(huan)，手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)時(shi)需扳動(dong)(dong)(dong)手(shou)(shou)(shou)(shou)柄(bing)切(qie)(qie)(qie)換(huan)(huan)，手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)狀態轉(zhuan)變為(wei)(wei)電動(dong)(dong)(dong)時(shi)則自(zi)動(dong)(dong)(dong)運行。它由(you)手(shou)(shou)(shou)(shou)柄(bing)、切(qie)(qie)(qie)換(huan)(huan)件、直立(li)桿、離(li)合器(qi)(qi)、壓簧(huang)等組成。需手(shou)(shou)(shou)(shou)輪(lun)(lun)操作時(shi)，將手(shou)(shou)(shou)(shou)柄(bing)向手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)方向推動(dong)(dong)(dong)，切(qie)(qie)(qie)換(huan)(huan)件使(shi)離(li)合器(qi)(qi)抬高，并(bing)壓迫壓簧(huang)。當(dang)手(shou)(shou)(shou)(shou)柄(bing)推到一定位置時(shi)，離(li)合器(qi)(qi)即脫(tuo)離(li)蝸(gua)輪(lun)(lun)而(er)與手(shou)(shou)(shou)(shou)輪(lun)(lun)嚙合，同時(shi)直立(li)桿在(zai)(zai)扭(niu)簧(huang)作用(yong)(yong)下(xia)直立(li)于蝸(gua)輪(lun)(lun)端(duan)面，支撐住離(li)合器(qi)(qi)不致(zhi)下(xia)落，切(qie)(qie)(qie)換(huan)(huan)完(wan)成即可放(fang)開手(shou)(shou)(shou)(shou)柄(bing)，使(shi)用(yong)(yong)手(shou)(shou)(shou)(shou)輪(lun)(lun)進行操作。而(er)需電動(dong)(dong)(dong)操作時(shi)，電動(dong)(dong)(dong)機將帶動(dong)(dong)(dong)蝸(gua)輪(lun)(lun)轉(zhuan)動(dong)(dong)(dong)，支承于蝸(gua)輪(lun)(lun)端(duan)面的直立(li)桿即倒下(xia)，在(zai)(zai)壓簧(huang)作用(yong)(yong)下(xia)離(li)合器(qi)(qi)迅速向蝸(gua)輪(lun)(lun)方向移動(dong)(dong)(dong)，并(bing)與蝸(gua)輪(lun)(lun)嚙合，同時(shi)與手(shou)(shou)(shou)(shou)輪(lun)(lun)脫(tuo)開，自(zi)動(dong)(dong)(dong)實現手(shou)(shou)(shou)(shou)動(dong)(dong)(dong)到電動(dong)(dong)(dong)狀態的轉(zhuan)換(huan)(huan)。