德(de)國FESTO電磁閥選型技巧：

FESTO電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)是(shi)利用(yong)電(dian)(dian)(dian)(dian)磁(ci)(ci)效應(ying)實(shi)現控(kong)(kong)制(zhi)目的(de)的(de)工(gong)業設備，用(yong)在(zai)工(gong)業控(kong)(kong)制(zhi)系統中調(diao)整介質的(de)方(fang)向、流量、速度(du)和(he)其(qi)他(ta)的(de)參(can)數(shu)(shu)。電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)主要由繼電(dian)(dian)(dian)(dian)器進(jin)行控(kong)(kong)制(zhi)。因而，電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)可(ke)以配合不同的(de)電(dian)(dian)(dian)(dian)路來實(shi)現預期的(de)控(kong)(kong)制(zhi)，而且(qie)控(kong)(kong)制(zhi)的(de)精度(du)和(he)靈活(huo)性都能(neng)夠得到保證。電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)有很多種，常(chang)用(yong)的(de)是(shi)單向閥(fa)(fa)、安全閥(fa)(fa)、方(fang)向控(kong)(kong)制(zhi)閥(fa)(fa)、速度(du)調(diao)節閥(fa)(fa)等。電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)按照驅(qu)動(dong)(dong)力又(you)有氣動(dong)(dong)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)、電(dian)(dian)(dian)(dian)動(dong)(dong)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)和(he)液壓(ya)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)。 　電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)選(xuan)型首先(xian)應(ying)該依次(ci)遵(zun)循安全性，可(ke)靠性，適用(yong)性，經濟性四大原則，其(qi)次(ci)是(shi)根據六個方(fang)面的(de)現場(chang)工(gong)況即管道參(can)數(shu)(shu)、流體參(can)數(shu)(shu)、壓(ya)力參(can)數(shu)(shu)、電(dian)(dian)(dian)(dian)氣參(can)數(shu)(shu)、動(dong)(dong)作方(fang)式、特殊(shu)要求進(jin)行選(xuan)擇。

德國FESTO電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)安(an)(an)裝(zhuang)： 1、先要(yao)檢查電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)是否與選型參(can)數一致，比如電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、介質(zhi)壓(ya)力、壓(ya)差等(deng)，尤(you)其(qi)是電(dian)(dian)(dian)(dian)(dian)(dian)源，如果搞錯，就會燒壞(huai)線圈。電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)應(ying)(ying)(ying)滿(man)足額定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)波動范(fan)圍：交流+10%~-15%，直流+10%~-10%，平時(shi)線圈組件不宜(yi)拆開。 2、一般電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)線圈部件應(ying)(ying)(ying)豎直向(xiang)上，豎直安(an)(an)裝(zhuang)在(zai)水(shui)平于地(di)面的(de)(de)管道(dao)，如果受空間限制或工況要(yao)求必須按側(ce)立安(an)(an)裝(zhuang)的(de)(de)，需在(zai)選型訂(ding)貨時(shi)提出(chu)。否則可能造成電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)不能正常(chang)(chang)工作。 3、接管之前(qian)(qian)要(yao)對管道(dao)進行沖洗(xi)，把管道(dao)中(zhong)的(de)(de)金屬(shu)粉(fen)末及密封材料(liao)殘留物，銹(xiu)垢(gou)(gou)等(deng)清除。要(yao)注意介質(zhi)的(de)(de)潔(jie)凈(jing)度，如果介質(zhi)內混(hun)有(you)塵垢(gou)(gou)，雜質(zhi)等(deng)妨礙電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)的(de)(de)正常(chang)(chang)工作，管道(dao)中(zhong)應(ying)(ying)(ying)裝(zhuang)過(guo)濾器或濾網。 4、如果介質(zhi)會起水(shui)錘現象，那么應(ying)(ying)(ying)該選用(yong)(yong)具防水(shui)錘功能的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)或采取相應(ying)(ying)(ying)的(de)(de)防范(fan)措(cuo)施。 5、電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)前(qian)(qian)后應(ying)(ying)(ying)加手(shou)動切斷(duan)閥(fa)(fa)，同(tong)時(shi)應(ying)(ying)(ying)設旁路，便于電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)在(zai)故障時(shi)維護。 6、電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)一般是定(ding)向(xiang)的(de)(de)，不可裝(zhuang)反，通常(chang)(chang)在(zai)閥(fa)(fa)體上用(yong)(yong)→指出(chu)介質(zhi)流動方向(xiang)，安(an)(an)裝(zhuang)時(shi)要(yao)依照→指示的(de)(de)方向(xiang)安(an)(an)裝(zhuang)。不過(guo)在(zai)真空管路或特(te)殊情況下(xia)可以反裝(zhuang)。 7、蒸汽用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)閥(fa)(fa)入口側(ce)應(ying)(ying)(ying)裝(zhuang)有(you)疏水(shui)閥(fa)(fa)，該處接管應(ying)(ying)(ying)傾斜。