電動(dong)閥門廠(chang)家介紹閘閥的試壓方法

閘(zha)閥(fa)(fa)的(de)強度試(shi)驗與截止閥(fa)(fa)一(yi)樣。 閘(zha)閥(fa)(fa)的(de)密封(feng)性試(shi)驗有兩(liang)種方(fang)法。

① 閘(zha)(zha)板(ban)(ban)開啟，使閥內壓力升至規定(ding)值(zhi)；然后關閉閘(zha)(zha)板(ban)(ban)，立即取出(chu)閘(zha)(zha)閥，檢查閘(zha)(zha)板(ban)(ban)兩側(ce)密(mi)封(feng)處(chu)有否(fou)滲漏(lou)或者(zhe)直接往(wang)閥蓋上(shang)的(de)堵頭內注(zhu)入試驗(yan)介質至規定(ding)值(zhi)，電動閥門銷售(shou)，檢查閘(zha)(zha)板(ban)(ban)兩側(ce)密(mi)封(feng)處(chu)。以(yi)上(shang)方(fang)(fang)法叫(jiao)做中間試壓。這(zhe)種方(fang)(fang)法不宜在公(gong)稱通徑DN32mm以(yi)下的(de)閘(zha)(zha)閥做密(mi)封(feng)試驗(yan)。

② 另(ling)一種方法是將閘板開(kai)啟，使閥門(men)試驗壓(ya)力升(sheng)至規定值；然后關閘板，打開(kai)一端盲(mang)板，檢查(cha)密封面是否滲漏。再倒(dao)頭，作以上重復試驗至合格為止。

氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)作(zuo)力距比電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)大，氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)開關動(dong)(dong)(dong)(dong)(dong)作(zuo)速(su)度(du)可以調整(zheng)，結(jie)構(gou)(gou)簡單，易(yi)維(wei)護，電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)生產(chan)商(shang)，動(dong)(dong)(dong)(dong)(dong)作(zuo)過(guo)程中(zhong)因氣(qi)(qi)(qi)體本身(shen)(shen)的(de)(de)緩沖特性，不(bu)(bu)易(yi)因卡(ka)住而(er)(er)損(sun)壞，但必須有(you)氣(qi)(qi)(qi)源(yuan)，且其控(kong)(kong)(kong)制系統(tong)也比電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)復雜。氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)響應靈敏，很多對(dui)控(kong)(kong)(kong)制要(yao)(yao)求(qiu)高(gao)的(de)(de)廠專為(wei)氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)儀表控(kong)(kong)(kong)制元(yuan)件設置(zhi)壓縮空(kong)氣(qi)(qi)(qi)站。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)的(de)(de)就(jiu)是(shi)要(yao)(yao)電(dian)(dian)(dian)。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)和(he)氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)的(de)(de)本質區別在于(yu)使用(yong)(yong)不(bu)(bu)同(tong)的(de)(de)驅(qu)動(dong)(dong)(dong)(dong)(dong)裝置(zhi)，也就(jiu)是(shi)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)，而(er)(er)調節(jie)(jie)閥(fa)(fa)(fa)本身(shen)(shen)沒有(you)什么區別。配合不(bu)(bu)同(tong)的(de)(de)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)主要(yao)(yao)是(shi)工(gong)況(kuang)(kuang)要(yao)(yao)求(qiu)，如(ru)(ru)化工(gong)等要(yao)(yao)求(qiu)防(fang)爆的(de)(de)場(chang)合，使用(yong)(yong)的(de)(de)是(shi)氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)，因為(wei)安(an)全性要(yao)(yao)求(qiu)高(gao)，電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)，而(er)(er)且價格便(bian)宜，配合智能可以上(shang)總線，控(kong)(kong)(kong)制方式也簡單。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)動(dong)(dong)(dong)(dong)(dong)力源(yuan)為(wei)電(dian)(dian)(dian)源(yuan)，如(ru)(ru)果(guo)線路板或電(dian)(dian)(dian)機(ji)出現故障容易(yi)出現火花，所(suo)以一般應用(yong)(yong)在環境要(yao)(yao)求(qiu)不(bu)(bu)高(gao)和(he)沒有(you)危(wei)險的(de)(de)場(chang)合。氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)門(men)(men)(men)(men)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)動(dong)(dong)(dong)(dong)(dong)力源(yuan)為(wei)氣(qi)(qi)(qi)源(yuan)，氣(qi)(qi)(qi)源(yuan)來源(yuan)于(yu)空(kong)壓機(ji)，采用(yong)(yong)將電(dian)(dian)(dian)控(kong)(kong)(kong)信號轉換成氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)控(kong)(kong)(kong)制信號，驅(qu)動(dong)(dong)(dong)(dong)(dong)氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)進行(xing)(xing)(xing)閥(fa)(fa)(fa)位(wei)調節(jie)(jie)。就(jiu)氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)和(he)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)調節(jie)(jie)性能比較(jiao)，氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)響應速(su)度(du)更快，能更適(shi)合應用(yong)(yong)在調節(jie)(jie)工(gong)況(kuang)(kuang)，所(suo)以生產(chan)調節(jie)(jie)閥(fa)(fa)(fa)的(de)(de)廠家都同(tong)時生產(chan)氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)機(ji)構(gou)(gou)與(yu)之配套(tao)。

運(yun)行中(zhong)的(de)電動(dong)閥(fa)門(men)，各種閥(fa)件應(ying)(ying)齊全、完好(hao)(hao)。法蘭螺(luo)(luo)(luo)紋(wen)和支(zhi)架上(shang)的(de)螺(luo)(luo)(luo)栓不可缺少，螺(luo)(luo)(luo)紋(wen)應(ying)(ying)完好(hao)(hao)無損，不允許(xu)(xu)(xu)有松動(dong)現(xian)象(xiang)。手輪(lun)上(shang)的(de)緊(jin)固(gu)螺(luo)(luo)(luo)母，如發現(xian)松動(dong)應(ying)(ying)及(ji)時(shi)擰緊(jin)，電動(dong)閥(fa)門(men)生產廠家(jia)，以免磨(mo)損連接處(chu)或丟失手輪(lun)和銘牌。手輪(lun)如有丟失，不允許(xu)(xu)(xu)用活(huo)扳手代(dai)替(ti)，應(ying)(ying)及(ji)時(shi)配齊。填料(liao)壓蓋不允許(xu)(xu)(xu)歪斜或無預(yu)緊(jin)間隙(xi)。對容易(yi)受(shou)到雨雪、灰塵、風沙(sha)等(deng)(deng)污物(wu)沾染的(de)環境中(zhong)的(de)電動(dong)閥(fa)門(men)，其閥(fa)桿要(yao)安裝保(bao)護罩(zhao)。電動(dong)閥(fa)門(men)上(shang)的(de)標尺應(ying)(ying)保(bao)持(chi)完整、準確(que)、清晰。電動(dong)閥(fa)門(men)的(de)鉛封、蓋帽、氣(qi)動(dong)附(fu)件等(deng)(deng)應(ying)(ying)齊全完好(hao)(hao)。保(bao)溫夾套應(ying)(ying)無凹(ao)陷、裂紋(wen)。