一、什么是電動球閥和氣動球閥

1、電動球閥，英文名(ming)稱：motor-driven ball valve 或者 electric ball valve。電(dian)動(dong)(dong)球(qiu)(qiu)閥(fa)通常由電(dian)動(dong)(dong)執行機構和球(qiu)(qiu)閥(fa)連接起來，經(jing)過安(an)裝(zhuang)調試后(hou)成為電(dian)動(dong)(dong)球(qiu)(qiu)閥(fa)。電(dian)動(dong)(dong)球(qiu)(qiu)閥(fa)使用電(dian)能作(zuo)為動(dong)(dong)力來接通電(dian)動(dong)(dong)執行機構驅(qu)動(dong)(dong)球(qiu)(qiu)閥(fa)，實現球(qiu)(qiu)閥(fa)的開(kai)關、調節(jie)動(dong)(dong)作(zuo)，從(cong)而達到對管道(dao)介質(zhi)的開(kai)關或是調節(jie)目的。

2、氣動球閥是球(qiu)(qiu)(qiu)閥(fa)配(pei)上(shang)氣(qi)(qi)動(dong)(dong)執行器。由氣(qi)(qi)源(yuan)為(wei)動(dong)(dong)力來(lai)驅動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)開啟(qi)和(he)關(guan)閉，從而實(shi)現對(dui)介(jie)質(zhi)的開關(guan)、調節動(dong)(dong)作(zuo)，從而達(da)到(dao)對(dui)管道介(jie)質(zhi)的開關(guan)或是調節目(mu)的自動(dong)(dong)化裝(zhuang)置(zhi)。氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)通(tong)常配(pei)置(zhi)各種(zhong)附件，比如電磁閥(fa)、氣(qi)(qi)源(yuan)處理三聯(lian)件、限位(wei)開關(guan)、定(ding)位(wei)器、控(kong)制箱等(deng)，以實(shi)現就地控(kong)制和(he)遠距(ju)離集中控(kong)制，在控(kong)制室里就可以控(kong)制閥(fa)門的開關(guan)，不(bu)需要(yao)跑到(dao)現場或者高空和(he)危險地帶來(lai)手動(dong)(dong)控(kong)制，在很(hen)大程度上(shang)節約了人力資源(yuan)以及時間(jian)和(he)安(an)全性(xing)。氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)具(ju)體(ti)分類(lei)有：不(bu)銹(xiu)鋼氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)，塑料氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)，衛(wei)生級氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)，碳鋼氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)，二通(tong)氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)，三通(tong)氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)，四通(tong)氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)。

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二、氣動球閥和電動球閥的區別

1、氣(qi)(qi)(qi)動(dong)(dong)(dong)閥(fa)(fa)(fa)動(dong)(dong)(dong)作(zuo)(zuo)力(li)距比(bi)電(dian)動(dong)(dong)(dong)球閥(fa)(fa)(fa)大(da)，氣(qi)(qi)(qi)動(dong)(dong)(dong)閥(fa)(fa)(fa)門開(kai)關動(dong)(dong)(dong)作(zuo)(zuo)速度可以調整(zheng)，結構簡(jian)單，易維(wei)護，動(dong)(dong)(dong)作(zuo)(zuo)過(guo)程(cheng)中因氣(qi)(qi)(qi)體本身的緩沖特性，不(bu)易因卡住(zhu)而損壞，但必須(xu)有氣(qi)(qi)(qi)源(yuan)，且其(qi)控(kong)制(zhi)(zhi)系統(tong)也比(bi)電(dian)動(dong)(dong)(dong)閥(fa)(fa)(fa)門復雜。氣(qi)(qi)(qi)動(dong)(dong)(dong)閥(fa)(fa)(fa)門響應靈敏，安全(quan)可靠，很多(duo)對控(kong)制(zhi)(zhi)要求高的廠專為氣(qi)(qi)(qi)動(dong)(dong)(dong)儀表(biao)控(kong)制(zhi)(zhi)元件設置壓縮空(kong)氣(qi)(qi)(qi)站。氣(qi)(qi)(qi)動(dong)(dong)(dong)閥(fa)(fa)(fa)門執(zhi)(zhi)行(xing)機構動(dong)(dong)(dong)力(li)源(yuan)為氣(qi)(qi)(qi)源(yuan)，氣(qi)(qi)(qi)源(yuan)來源(yuan)于空(kong)壓機，采用(yong)定位器將電(dian)控(kong)信(xin)(xin)號轉換成氣(qi)(qi)(qi)動(dong)(dong)(dong)控(kong)制(zhi)(zhi)信(xin)(xin)號，驅動(dong)(dong)(dong)氣(qi)(qi)(qi)動(dong)(dong)(dong)執(zhi)(zhi)行(xing)機構進(jin)行(xing)閥(fa)(fa)(fa)位調節(jie)。

2、電動閥門執(zhi)行機(ji)(ji)構(gou)(gou)動(dong)(dong)力源為電源，如果線路板或電機(ji)(ji)出現故(gu)障容易出現火花，所以一般應用在(zai)環(huan)境要求不高和沒有危險(xian)的(de)場合。就氣(qi)動(dong)(dong)執(zhi)行機(ji)(ji)構(gou)(gou)和電動(dong)(dong)執(zhi)行機(ji)(ji)構(gou)(gou)調節性能(neng)比(bi)較，氣(qi)動(dong)(dong)執(zhi)行機(ji)(ji)構(gou)(gou)響應速度更快，能(neng)更適合應用在(zai)調節工況，所以生(sheng)產調節閥的(de)廠家都同時(shi)生(sheng)產氣(qi)動(dong)(dong)執(zhi)行機(ji)(ji)構(gou)(gou)與之(zhi)配套。

3、氣(qi)動(dong)球閥(fa)比電動(dong)球閥(fa)響(xiang)應速度(du)快(kuai)，一般(ban)氣(qi)動(dong)球閥(fa)的(de)開關時間(jian)(jian)為6秒(miao)左右，而電動(dong)球閥(fa)的(de)開關時間(jian)(jian)一般(ban)為15-20秒(miao)。

4、電動(dong)閥門(men)和(he)氣(qi)動(dong)閥門(men)的本質區別在(zai)于使(shi)用(yong)不(bu)(bu)同的驅動(dong)裝置，也就(jiu)是執行機構(gou)，配合(he)不(bu)(bu)同的執行機構(gou)主要(yao)是工(gong)況要(yao)求，如化工(gong)等要(yao)求防爆的場合(he)，使(shi)用(yong)最多的是氣(qi)動(dong)閥門(men)，因為安全性要(yao)求高，而且價格便宜，配合(he)智能(neng)定位(wei)器可以上總線，控制方式也簡(jian)單。

5、電(dian)動(dong)球閥優(you)點：對液(ye)體介質和大管徑氣體效(xiao)果(guo)好(hao)，不(bu)受(shou)氣候影響(xiang)。不(bu)受(shou)空壓氣的壓力影響(xiang)。缺點：成本高、在(zai)潮濕環(huan)境不(bu)好(hao)。

6、氣動球閥優點：對氣體介質(zhi)和小管徑液體效(xiao)果好，成(cheng)本低，維護方(fang)便。缺點：受(shou)空(kong)壓氣壓力波動的影響，在(zai)北方(fang)冬(dong)季易(yi)受(shou)空(kong)壓氣含水影響，造(zao)成(cheng)傳動部分(fen)凍(dong)結、不動作。

三、如何選用氣動球閥和電動球閥

電動球閥主要適宜用在沒有儀表氣源的場所，安裝使用方便，但安全性能較差，不宜使用在易燃易爆等對防爆性要求比較高的危險場所，使用中不及氣動閥穩定，維修量相對較大；氣動球閥響應速度快，其安全性(xing)能(neng)比較高，廣泛用在易(yi)燃(ran)易(yi)爆等(deng)防爆要求高的場所(suo)。但安裝使用需要儀表氣源(yuan)，多只使用比較合算，可以建(jian)立氣源(yuan)基地(di)。