一、什么是電動球閥和氣動球閥

1、電動球閥，英文名(ming)稱(cheng)：motor-driven ball valve 或者 electric ball valve。電(dian)動球(qiu)(qiu)閥(fa)通常由(you)電(dian)動執(zhi)行機構和(he)球(qiu)(qiu)閥(fa)連接(jie)起來，經過(guo)安裝(zhuang)調(diao)試(shi)后成為(wei)電(dian)動球(qiu)(qiu)閥(fa)。電(dian)動球(qiu)(qiu)閥(fa)使用(yong)電(dian)能作為(wei)動力來接(jie)通電(dian)動執(zhi)行機構驅動球(qiu)(qiu)閥(fa)，實(shi)現球(qiu)(qiu)閥(fa)的(de)(de)(de)開(kai)關、調(diao)節動作，從而(er)達到對管道(dao)介質(zhi)的(de)(de)(de)開(kai)關或是調(diao)節目的(de)(de)(de)。

2、氣動球閥是球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)配上氣(qi)(qi)動(dong)(dong)(dong)(dong)執行器(qi)。由氣(qi)(qi)源為動(dong)(dong)(dong)(dong)力(li)來驅動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)開(kai)(kai)啟和關(guan)閉，從而實現對介(jie)質的(de)開(kai)(kai)關(guan)、調(diao)節(jie)動(dong)(dong)(dong)(dong)作，從而達到對管(guan)道介(jie)質的(de)開(kai)(kai)關(guan)或(huo)是調(diao)節(jie)目的(de)自動(dong)(dong)(dong)(dong)化裝(zhuang)置(zhi)。氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)通(tong)常配置(zhi)各種附件(jian)，比如電磁閥(fa)(fa)(fa)、氣(qi)(qi)源處理三聯件(jian)、限位開(kai)(kai)關(guan)、定位器(qi)、控(kong)制(zhi)(zhi)(zhi)箱等，以(yi)實現就地控(kong)制(zhi)(zhi)(zhi)和遠距離(li)集中控(kong)制(zhi)(zhi)(zhi)，在控(kong)制(zhi)(zhi)(zhi)室里就可以(yi)控(kong)制(zhi)(zhi)(zhi)閥(fa)(fa)(fa)門的(de)開(kai)(kai)關(guan)，不需要跑到現場(chang)或(huo)者高空和危險(xian)地帶來手動(dong)(dong)(dong)(dong)控(kong)制(zhi)(zhi)(zhi)，在很大程度(du)上節(jie)約了人力(li)資源以(yi)及時間(jian)和安(an)全性。氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)具體分類有：不銹鋼(gang)氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)，塑料(liao)氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)，衛(wei)生級(ji)氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)，碳鋼(gang)氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)，二(er)通(tong)氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)，三通(tong)氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)，四(si)通(tong)氣(qi)(qi)動(dong)(dong)(dong)(dong)球(qiu)(qiu)(qiu)(qiu)閥(fa)(fa)(fa)。

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二、氣動球閥和電動球閥的區別

1、氣(qi)動(dong)(dong)(dong)(dong)閥(fa)(fa)動(dong)(dong)(dong)(dong)作(zuo)力距比(bi)電(dian)(dian)動(dong)(dong)(dong)(dong)球閥(fa)(fa)大，氣(qi)動(dong)(dong)(dong)(dong)閥(fa)(fa)門(men)開關動(dong)(dong)(dong)(dong)作(zuo)速度(du)可(ke)以調整，結構簡單，易維護，動(dong)(dong)(dong)(dong)作(zuo)過(guo)程中(zhong)因(yin)(yin)氣(qi)體本身的(de)緩沖特(te)性，不易因(yin)(yin)卡住(zhu)而(er)損壞，但必須有氣(qi)源(yuan)，且其控(kong)制(zhi)(zhi)系統也(ye)比(bi)電(dian)(dian)動(dong)(dong)(dong)(dong)閥(fa)(fa)門(men)復(fu)雜。氣(qi)動(dong)(dong)(dong)(dong)閥(fa)(fa)門(men)響應(ying)靈敏，安全(quan)可(ke)靠，很多對控(kong)制(zhi)(zhi)要求高的(de)廠專(zhuan)為氣(qi)動(dong)(dong)(dong)(dong)儀表控(kong)制(zhi)(zhi)元(yuan)件設(she)置壓(ya)縮空氣(qi)站。氣(qi)動(dong)(dong)(dong)(dong)閥(fa)(fa)門(men)執(zhi)行(xing)機(ji)構動(dong)(dong)(dong)(dong)力源(yuan)為氣(qi)源(yuan)，氣(qi)源(yuan)來(lai)源(yuan)于空壓(ya)機(ji)，采(cai)用定位(wei)器將電(dian)(dian)控(kong)信(xin)號轉(zhuan)換成(cheng)氣(qi)動(dong)(dong)(dong)(dong)控(kong)制(zhi)(zhi)信(xin)號，驅動(dong)(dong)(dong)(dong)氣(qi)動(dong)(dong)(dong)(dong)執(zhi)行(xing)機(ji)構進(jin)行(xing)閥(fa)(fa)位(wei)調節。

2、電動閥門執(zhi)行(xing)機(ji)構(gou)(gou)動力(li)源為電源，如果線路板或電機(ji)出現故障容易出現火(huo)花(hua)，所(suo)以(yi)一般應(ying)用在環(huan)境要求不高和(he)沒有危險的場(chang)合。就氣(qi)(qi)(qi)動執(zhi)行(xing)機(ji)構(gou)(gou)和(he)電動執(zhi)行(xing)機(ji)構(gou)(gou)調(diao)節(jie)(jie)性能(neng)(neng)比較(jiao)，氣(qi)(qi)(qi)動執(zhi)行(xing)機(ji)構(gou)(gou)響應(ying)速度(du)更快，能(neng)(neng)更適(shi)合應(ying)用在調(diao)節(jie)(jie)工況，所(suo)以(yi)生(sheng)產調(diao)節(jie)(jie)閥的廠家都同時生(sheng)產氣(qi)(qi)(qi)動執(zhi)行(xing)機(ji)構(gou)(gou)與之配套。

3、氣動球(qiu)閥(fa)(fa)(fa)(fa)比電動球(qiu)閥(fa)(fa)(fa)(fa)響應速度快，一般氣動球(qiu)閥(fa)(fa)(fa)(fa)的(de)開(kai)關時(shi)間為6秒左右，而電動球(qiu)閥(fa)(fa)(fa)(fa)的(de)開(kai)關時(shi)間一般為15-20秒。

4、電動(dong)閥門(men)和(he)氣(qi)動(dong)閥門(men)的(de)本質(zhi)區別在于使用不(bu)同(tong)的(de)驅動(dong)裝置，也就是執行機(ji)構，配(pei)(pei)合(he)不(bu)同(tong)的(de)執行機(ji)構主要(yao)是工(gong)況(kuang)要(yao)求，如(ru)化工(gong)等要(yao)求防爆(bao)的(de)場合(he)，使用最多(duo)的(de)是氣(qi)動(dong)閥門(men)，因(yin)為安全(quan)性要(yao)求高，而且價格便宜，配(pei)(pei)合(he)智能定位(wei)器(qi)可以上總線，控制方式(shi)也簡(jian)單(dan)。

5、電動球閥優點：對液體介質和大管徑氣(qi)體效(xiao)果好，不(bu)受(shou)氣(qi)候影響。不(bu)受(shou)空(kong)壓氣(qi)的(de)壓力影響。缺點：成本(ben)高、在潮濕(shi)環境不(bu)好。

6、氣動球閥優點：對氣(qi)(qi)體介(jie)質和小管(guan)徑液(ye)體效果好，成本低，維(wei)護(hu)方便。缺點：受(shou)空(kong)壓氣(qi)(qi)壓力波動(dong)的影響(xiang)，在北(bei)方冬季易受(shou)空(kong)壓氣(qi)(qi)含水影響(xiang)，造成傳(chuan)動(dong)部分凍結、不動(dong)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(su)度(du)快，其安(an)全性能比較高(gao)，廣(guang)泛用(yong)在易(yi)燃(ran)易(yi)爆等(deng)防爆要求高(gao)的場(chang)所。但安(an)裝使用(yong)需要儀表氣源，多(duo)只使用(yong)比較合算，可以建立氣源基地(di)。