一、什么是電動球閥和氣動球閥

1、電動球閥，英(ying)文名稱：motor-driven ball valve 或者 electric ball valve。電動(dong)(dong)球閥通常由電動(dong)(dong)執行機(ji)構(gou)和球閥連接起來，經過安裝調試后成(cheng)為(wei)(wei)電動(dong)(dong)球閥。電動(dong)(dong)球閥使用(yong)電能作為(wei)(wei)動(dong)(dong)力(li)來接通電動(dong)(dong)執行機(ji)構(gou)驅動(dong)(dong)球閥，實現(xian)球閥的開關(guan)、調節動(dong)(dong)作，從而達(da)到對管道(dao)介質的開關(guan)或是調節目的。

2、氣動球閥是球(qiu)(qiu)閥配上氣(qi)(qi)動(dong)(dong)執(zhi)行器。由氣(qi)(qi)源(yuan)為動(dong)(dong)力來(lai)驅動(dong)(dong)球(qiu)(qiu)閥開啟和關(guan)(guan)閉，從(cong)而(er)實(shi)(shi)現對介質的開關(guan)(guan)、調(diao)節動(dong)(dong)作(zuo)，從(cong)而(er)達到(dao)對管道介質的開關(guan)(guan)或(huo)是調(diao)節目(mu)的自(zi)動(dong)(dong)化裝置。氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥通常配置各種(zhong)附件，比(bi)如電磁閥、氣(qi)(qi)源(yuan)處理三(san)聯件、限位(wei)開關(guan)(guan)、定(ding)位(wei)器、控制箱等，以(yi)(yi)實(shi)(shi)現就(jiu)地(di)控制和遠距離集中控制，在控制室里就(jiu)可以(yi)(yi)控制閥門的開關(guan)(guan)，不需要跑到(dao)現場(chang)或(huo)者高空和危險地(di)帶來(lai)手動(dong)(dong)控制，在很(hen)大程(cheng)度上節約了人力資源(yuan)以(yi)(yi)及(ji)時間和安全性。氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥具體分類有：不銹鋼氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥，塑料氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥，衛(wei)生級氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥，碳(tan)鋼氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥，二通氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥，三(san)通氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥，四通氣(qi)(qi)動(dong)(dong)球(qiu)(qiu)閥。

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二、氣動球閥和電動球閥的區別

1、氣(qi)(qi)動(dong)(dong)(dong)(dong)閥(fa)動(dong)(dong)(dong)(dong)作(zuo)力距比電動(dong)(dong)(dong)(dong)球閥(fa)大，氣(qi)(qi)動(dong)(dong)(dong)(dong)閥(fa)門(men)(men)開關(guan)動(dong)(dong)(dong)(dong)作(zuo)速(su)度可以(yi)調整，結構(gou)簡單，易維護，動(dong)(dong)(dong)(dong)作(zuo)過程中因(yin)氣(qi)(qi)體本身的緩(huan)沖特性(xing)，不易因(yin)卡住(zhu)而損壞，但必須(xu)有氣(qi)(qi)源(yuan)，且(qie)其(qi)控(kong)(kong)制(zhi)系統也(ye)比電動(dong)(dong)(dong)(dong)閥(fa)門(men)(men)復雜。氣(qi)(qi)動(dong)(dong)(dong)(dong)閥(fa)門(men)(men)響應靈敏，安(an)全可靠，很多對控(kong)(kong)制(zhi)要求高的廠專為氣(qi)(qi)動(dong)(dong)(dong)(dong)儀(yi)表控(kong)(kong)制(zhi)元件設置壓(ya)縮(suo)空(kong)氣(qi)(qi)站。氣(qi)(qi)動(dong)(dong)(dong)(dong)閥(fa)門(men)(men)執行(xing)機(ji)構(gou)動(dong)(dong)(dong)(dong)力源(yuan)為氣(qi)(qi)源(yuan)，氣(qi)(qi)源(yuan)來源(yuan)于空(kong)壓(ya)機(ji)，采用定位(wei)器將電控(kong)(kong)信號轉換(huan)成(cheng)氣(qi)(qi)動(dong)(dong)(dong)(dong)控(kong)(kong)制(zhi)信號，驅動(dong)(dong)(dong)(dong)氣(qi)(qi)動(dong)(dong)(dong)(dong)執行(xing)機(ji)構(gou)進行(xing)閥(fa)位(wei)調節(jie)。

2、電動閥門執(zhi)(zhi)行機(ji)(ji)構(gou)動(dong)(dong)力源為(wei)電源，如果線路板或電機(ji)(ji)出(chu)現(xian)故(gu)障容易出(chu)現(xian)火花，所以一般應(ying)用(yong)在環境(jing)要求不高和(he)沒有危險的場合。就氣(qi)動(dong)(dong)執(zhi)(zhi)行機(ji)(ji)構(gou)和(he)電動(dong)(dong)執(zhi)(zhi)行機(ji)(ji)構(gou)調(diao)節(jie)性(xing)能比(bi)較，氣(qi)動(dong)(dong)執(zhi)(zhi)行機(ji)(ji)構(gou)響應(ying)速(su)度更(geng)快，能更(geng)適合應(ying)用(yong)在調(diao)節(jie)工況，所以生產(chan)調(diao)節(jie)閥的廠家都(dou)同時生產(chan)氣(qi)動(dong)(dong)執(zhi)(zhi)行機(ji)(ji)構(gou)與之配套(tao)。

3、氣(qi)動球閥比電動球閥響應速(su)度(du)快，一般氣(qi)動球閥的(de)開關時間為(wei)6秒(miao)左右(you)，而電動球閥的(de)開關時間一般為(wei)15-20秒(miao)。

4、電動閥(fa)門(men)(men)和氣(qi)動閥(fa)門(men)(men)的(de)本質區別在于(yu)使(shi)用不(bu)同的(de)驅動裝置，也就是(shi)(shi)執(zhi)(zhi)行機(ji)構(gou)，配合不(bu)同的(de)執(zhi)(zhi)行機(ji)構(gou)主要(yao)是(shi)(shi)工(gong)況要(yao)求(qiu)，如化工(gong)等(deng)要(yao)求(qiu)防爆的(de)場合，使(shi)用最多(duo)的(de)是(shi)(shi)氣(qi)動閥(fa)門(men)(men)，因為(wei)安(an)全性要(yao)求(qiu)高，而且價格便宜(yi)，配合智能(neng)定位器可以上總(zong)線(xian)，控制方(fang)式也簡單(dan)。

5、電動球閥(fa)優(you)點：對液體介質和(he)大(da)管徑氣(qi)體效果(guo)好，不受(shou)氣(qi)候影(ying)響。不受(shou)空(kong)壓氣(qi)的壓力影(ying)響。缺點：成本高、在潮濕環境(jing)不好。

6、氣動球閥優點：對(dui)氣(qi)體介質和小管徑液體效果(guo)好，成本低，維(wei)護方(fang)便。缺點：受空(kong)壓氣(qi)壓力波動(dong)(dong)的影響，在(zai)北(bei)方(fang)冬季易(yi)受空(kong)壓氣(qi)含(han)水影響，造成傳動(dong)(dong)部(bu)分凍(dong)結、不動(dong)(dong)作(zuo)。

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(kuai)，其安全性能比較高(gao)，廣泛用在(zai)易燃易爆等防(fang)爆要求高(gao)的場所。但安裝使用需要儀(yi)表氣源，多只使用比較合算，可以建立氣源基(ji)地(di)。