燃氣表電機閥電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)選(xuan)型要點：根據閥(fa)門(men)類(lei)型選(xuan)擇電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)：閥(fa)門(men)種(zhong)類(lei)繁多，各種(zhong)閥(fa)門(men)的(de)(de)工作(zuo)原理(li)也不一(yi)(yi)樣，按照閥(fa)門(men)類(lei)型概括一(yi)(yi)下幾種(zhong)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)：角行(xing)(xing)程電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)；電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)輸出軸的(de)(de)轉動(dong)(dong)(dong)(dong)(dong)小于一(yi)(yi)周(zhou)，即小于360度(du)，通常為(wei)(wei)90度(du)就實(shi)現閥(fa)門(men)的(de)(de)啟(qi)閉(bi)過程控制，行(xing)(xing)業閥(fa)門(men)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)有著重要的(de)(de)作(zuo)用(yong)。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)門(men)比氣動(dong)(dong)(dong)(dong)(dong)、液(ye)動(dong)(dong)(dong)(dong)(dong)閥(fa)門(men)使用(yong)更為(wei)(wei)普(pu)遍，因(yin)此在采(cai)購閥(fa)門(men)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)的(de)(de)時候，對閥(fa)門(men)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)進行(xing)(xing)合理(li)的(de)(de)選(xuan)型使電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)裝置具有更高的(de)(de)可靠性和安全性。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)器(qi)(qi)與閥(fa)門(men)配套后(hou)都(dou)可以稱之為(wei)(wei)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)門(men)。

    閥門(men)電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)選型(xing)(xing)要點(dian)：此(ci)類電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)根(gen)據(ju)安裝接(jie)口方式的(de)不同又分為直連式、底(di)(di)座曲柄式兩種。直連式：底(di)(di)座曲柄式：多(duo)回轉電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)(轉角>360度)；此(ci)類電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)適用于(yu)(yu)閘閥、截止閥等(deng)。直行(xing)(xing)(xing)(xing)程電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)；此(ci)類電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)適用于(yu)(yu)單座調(diao)節(jie)閥、雙座調(diao)節(jie)閥等(deng)。根(gen)據(ju)閥門(men)電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)的(de)生產工藝控(kong)制(zhi)(zhi)(zhi)要求(qiu)選擇電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)：電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)的(de)控(kong)制(zhi)(zhi)(zhi)模(mo)式一(yi)般分為開(kai)關(guan)型(xing)(xing)和調(diao)節(jie)型(xing)(xing)(閉環(huan)控(kong)制(zhi)(zhi)(zhi))兩大(da)類。開(kai)關(guan)型(xing)(xing)--開(kai)關(guan)型(xing)(xing)電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)一(yi)般實現對(dui)閥門(men)的(de)開(kai)或關(guan)控(kong)制(zhi)(zhi)(zhi)，閥門(men)要么(me)處于(yu)(yu)全開(kai)位置，要么(me)處于(yu)(yu)全關(guan)位置，此(ci)類閥門(men)不需對(dui)介質(zhi)流量(liang)進行(xing)(xing)(xing)(xing)精確控(kong)制(zhi)(zhi)(zhi)。特(te)別值得(de)一(yi)提(ti)的(de)是開(kai)關(guan)型(xing)(xing)電(dian)動(dong)(dong)執行(xing)(xing)(xing)(xing)器(qi)(qi)因結構(gou)(gou)形式的(de)不同還可分為分體結構(gou)(gou)和一(yi)體化結構(gou)(gou)。

    調(diao)(diao)節(jie)型(xing)(xing)--調(diao)(diao)節(jie)型(xing)(xing)電(dian)(dian)動執(zhi)(zhi)行(xing)器(qi)不(bu)(bu)僅具有開關型(xing)(xing)一(yi)體化(hua)結構而(er)精(jing)確調(diao)(diao)節(jie)介質流量。因的(de)功能(neng)，它還能(neng)對閥(fa)門進行(xing)精(jing)確控(kong)制，從(cong)篇幅(fu)有限其工作原理(li)在此不(bu)(bu)作詳細說明。下面就調(diao)(diao)節(jie)型(xing)(xing)電(dian)(dian)動執(zhi)(zhi)行(xing)器(qi)選(xuan)型(xing)(xing)時需注(zhu)明的(de)參(can)數做簡要(yao)說明。控(kong)制信號(hao)類型(xing)(xing);調(diao)(diao)節(jie)型(xing)(xing)電(dian)(dian)動執(zhi)(zhi)行(xing)器(qi)控(kong)制信號(hao)一(yi)般(ban)有電(dian)(dian)流信號(hao)或電(dian)(dian)壓信號(hao)，選(xuan)型(xing)(xing)時需明確其控(kong)制信號(hao)類型(xing)(xing)及(ji)參(can)數。工作形(xing)(xing)式;調(diao)(diao)節(jie)型(xing)(xing)電(dian)(dian)動執(zhi)(zhi)行(xing)器(qi)工作方式一(yi)般(ban)為(wei)電(dian)(dian)開型(xing)(xing)，另(ling)一(yi)種為(wei)電(dian)(dian)關型(xing)(xing).一(yi)般(ban)情(qing)況下選(xuan)型(xing)(xing)需明確工作形(xing)(xing)式，很多產品在出廠(chang)后并(bing)不(bu)(bu)能(neng)進行(xing)修改，奧美閥(fa)控(kong)生(sheng)產的(de)智能(neng)型(xing)(xing)電(dian)(dian)動執(zhi)(zhi)行(xing)器(qi)可以通(tong)過現場設(she)定隨時修改。

    根(gen)據(ju)閥(fa)(fa)門(men)(men)操(cao)作(zuo)力(li)(li)矩(ju)選擇閥(fa)(fa)門(men)(men)電(dian)動(dong)(dong)執行(xing)器：閥(fa)(fa)門(men)(men)正常啟(qi)閉(bi)(bi)所(suo)需的(de)扭力(li)(li)由閥(fa)(fa)門(men)(men)口徑大(da)小、工作(zuo)壓力(li)(li)等因素(su)決(jue)定，但因閥(fa)(fa)門(men)(men)廠(chang)家加工精(jing)度、裝配工藝有(you)(you)所(suo)區別(bie)，所(suo)以不同(tong)廠(chang)家生產的(de)同(tong)規(gui)格閥(fa)(fa)門(men)(men)所(suo)需扭力(li)(li)也有(you)(you)所(suo)區別(bie)，即使是同(tong)個(ge)閥(fa)(fa)門(men)(men)廠(chang)家生產的(de)同(tong)規(gui)格閥(fa)(fa)門(men)(men)扭力(li)(li)也有(you)(you)所(suo)差別(bie)，當選型(xing)時執行(xing)器的(de)扭力(li)(li)選擇太小就會造成無法正常啟(qi)閉(bi)(bi)閥(fa)(fa)門(men)(men)，因此電(dian)動(dong)(dong)執行(xing)器必需選擇一(yi)個(ge)合理的(de)扭力(li)(li)范圍(wei)。電(dian)動(dong)(dong)執行(xing)器輸出力(li)(li)矩(ju)應為閥(fa)(fa)門(men)(men)操(cao)作(zuo)最大(da)力(li)(li)矩(ju)的(de)1.2～1.5倍(bei)。

    閥(fa)(fa)門(men)(men)(men)(men)電動(dong)執行(xing)器(qi)是實(shi)現閥(fa)(fa)門(men)(men)(men)(men)程(cheng)(cheng)控(kong)(kong)、自控(kong)(kong)和遙控(kong)(kong)不可(ke)缺少(shao)的(de)(de)設備，其(qi)運(yun)動(dong)過程(cheng)(cheng)可(ke)由行(xing)程(cheng)(cheng)、轉矩(ju)或軸向推(tui)力(li)的(de)(de)大小來控(kong)(kong)制。正確選擇閥(fa)(fa)門(men)(men)(men)(men)電動(dong)裝(zhuang)(zhuang)置(zhi)，對防止出現超(chao)負荷(he)現象至(zhi)關重要。閥(fa)(fa)門(men)(men)(men)(men)維(wei)護保養問題： 應對閥(fa)(fa)門(men)(men)(men)(men)的(de)(de)密封性能進(jin)行(xing)試(shi)驗，確保其(qi)性能。應查(cha)看閥(fa)(fa)門(men)(men)(men)(men)密封面是否磨損，并根據情況進(jin)行(xing)維(wei)修或更換。閥(fa)(fa)門(men)(men)(men)(men)存放(fang)環境需要注(zhu)意，應該(gai)存放(fang)在干燥通風的(de)(de)室(shi)內，且堵塞通路兩端。已安裝(zhuang)(zhuang)且使用中的(de)(de)閥(fa)(fa)門(men)(men)(men)(men)，應該(gai)對其(qi)進(jin)行(xing)定期的(de)(de)檢修，以確保其(qi)正常工作。運(yun)行(xing)中的(de)(de)閥(fa)(fa)門(men)(men)(men)(men)應完好，法蘭(lan)和支(zhi)架上的(de)(de)螺栓齊全，螺紋無損，沒有松動(dong)現象。