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天津伯納德強密封電動高溫切斷閥蒸汽球閥
比(bi)例(li)調節(jie)型執行(xing)機(ji)(ji)構接收計算機(ji)(ji)。調節(jie)器等(deng)到(dao)單元送來的4-20mA或(huo)0-10mA的模(mo)擬量信(xin)號,執行(xing)機(ji)(ji)構的輸出軸(zhou)轉角(jiao)(或(huo)位(wei)移)與(yu)信(xin)號成(cheng)比(bi)例(li)關(guan)系,井自動(dong)完(wan)成(cheng)調節(jie)任務。比(bi)例(li)調節(jie)型電動(dong)執行(xing)機(ji)(ji)構在(zai)線構成(cheng)安裝(zhuang)方式上又分成(cheng)兩種型式。
A.整(zheng)體式(shi)比例調節型(xing),即執行器(qi)及位置定(ding)位器(qi)GAMX -2007裝組成-個(ge)整(zheng)體,整(zheng)機現場安裝使用。
B.分立式比例調節型,執(zhi)行(xing)(xing)機(ji)構也是(shi)由執(zhi)行(xing)(xing)器(qi)(qi)及位(wei)置定位(wei)器(qi)(qi)構成,擔執(zhi)行(xing)(xing)器(qi)(qi)與位(wei)置定位(wei)器(qi)(qi)GAMX分開安裝(zhuang),位(wei)置定位(wei)器(qi)(qi)則在(zai)室內或其它(ta)地方安裝(zhuang)。
注意,整體式(shi)與(yu)分立式(shi)外接線不一樣。
天津伯納德強密封電動高溫切斷閥蒸汽球閥
減速機
電(dian)動(dong)(dong)(dong)(dong)執行機構(gou)減速(su)(su)(su)機是將(jiang)電(dian)同的(de)(de)(de)高(gao)(gao)速(su)(su)(su)轉動(dong)(dong)(dong)(dong),通(tong)過減速(su)(su)(su)裝置使輸(shu)出軸變成(cheng)低速(su)(su)(su)轉動(dong)(dong)(dong)(dong),大(da)(da)力矩(ju)的(de)(de)(de)輸(shu)出。減速(su)(su)(su)機為(wei)多級(ji)減速(su)(su)(su),最前(qian)面- -級(ji)采(cai)用(yong)體積小,傳動(dong)(dong)(dong)(dong)比大(da)(da)效率(lv)高(gao)(gao)的(de)(de)(de)行星C傳動(dong)(dong)(dong)(dong),中間一般(ban)配(pei)為(wei)斜(xie)齒傳動(dong)(dong)(dong)(dong),最后(hou)- -級(ji)- -般(ban)為(wei)有(you)機械(xie)自鎖功能的(de)(de)(de)蝸(gua)輪蝸(gua)桿傳動(dong)(dong)(dong)(dong),或絲杠螺母傳動(dong)(dong)(dong)(dong)。這樣(yang)使整(zheng)個減速(su)(su)(su)機既有(you)較高(gao)(gao)的(de)(de)(de)機械(xie)傳動(dong)(dong)(dong)(dong)效率(lv)又能有(you)機械(xie)自鎖的(de)(de)(de)特性。傳動(dong)(dong)(dong)(dong)潤滑(hua)來用(yong)長效鋰基(ji)潤滑(hua)脂,可保證在(zai)個大(da)(da)修期限(xian)無需開業維(wei)護。
比例(li)調節型的(de)位置定(ding)位器是(shi)將上位機(ji)器(如計算機(ji))發出(chu)的(de)模擬量信號(hao)(hao)進行比較、邏輯變換放(fang)大、驅(qu)動電(dian)機(ji)按信號(hao)(hao)大小比例(li)動作。
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