ASCO角座閥,阿斯卡結構材質

ASCO電(dian)(dian)磁(ci)閥(fa)(fa)選(xuan)(xuan)(xuan)型(xing)參數(shu)(shu)應(ying)該依次遵循安全性，可(ke)(ke)靠性，適(shi)用(yong)性，經濟性四大(da)(da)原 則(ze)，其(qi)次是根(gen)(gen)據(ju)(ju)六個(ge)方(fang)面的(de)(de)(de)(de)現(xian)場(chang)工(gong)況（即管道(dao)參數(shu)(shu)、流(liu)(liu)(liu)(liu)體參數(shu)(shu)、壓力參數(shu)(shu)、電(dian)(dian)氣(qi)(qi)參數(shu)(shu)、動(dong)作(zuo)方(fang)式(shi)(shi)、特殊要(yao)(yao)(yao)(yao)求(qiu)進行(xing)選(xuan)(xuan)(xuan)擇(ze)）。　　選(xuan)(xuan)(xuan)型(xing)依據(ju)(ju)：　　1、根(gen)(gen)據(ju)(ju)管道(dao)參數(shu)(shu)選(xuan)(xuan)(xuan)擇(ze)電(dian)(dian)磁(ci)閥(fa)(fa)的(de)(de)(de)(de)：通(tong)徑(jing)規格(ge)（即DN）、接口(kou)方(fang)式(shi)(shi)　　1）按(an)照(zhao)現(xian)場(chang)管道(dao)內徑(jing)尺(chi)寸或流(liu)(liu)(liu)(liu)量要(yao)(yao)(yao)(yao)求(qiu)來確定通(tong)徑(jing)（DN）尺(chi)寸；　　2）接口(kou)方(fang)式(shi)(shi)，般(ban)>DN50要(yao)(yao)(yao)(yao)選(xuan)(xuan)(xuan)擇(ze)法蘭接口(kou)，≤DN50則(ze)可(ke)(ke)根(gen)(gen)據(ju)(ju)用(yong)戶需要(yao)(yao)(yao)(yao)自由選(xuan)(xuan)(xuan)擇(ze)。　　2、根(gen)(gen)據(ju)(ju)流(liu)(liu)(liu)(liu)體參數(shu)(shu)選(xuan)(xuan)(xuan)擇(ze)電(dian)(dian)磁(ci)閥(fa)(fa)的(de)(de)(de)(de)：材質、溫(wen)(wen)度組　　1）腐蝕性流(liu)(liu)(liu)(liu)體：宜(yi)選(xuan)(xuan)(xuan)用(yong)耐腐蝕電(dian)(dian)磁(ci)閥(fa)(fa)和全不銹鋼；食用(yong)超(chao)凈流(liu)(liu)(liu)(liu)體：宜(yi)選(xuan)(xuan)(xuan)用(yong)食品不銹鋼材質電(dian)(dian)磁(ci)閥(fa)(fa)；　　2）高(gao)溫(wen)(wen)流(liu)(liu)(liu)(liu)體：要(yao)(yao)(yao)(yao)選(xuan)(xuan)(xuan)擇(ze)采用(yong)耐高(gao)溫(wen)(wen)的(de)(de)(de)(de)電(dian)(dian)工(gong)材料和密(mi)封材料制造(zao)的(de)(de)(de)(de)電(dian)(dian)磁(ci)閥(fa)(fa)，而且要(yao)(yao)(yao)(yao)選(xuan)(xuan)(xuan)擇(ze)活塞式(shi)(shi)結(jie)構類型(xing)的(de)(de)(de)(de)；　　3）流(liu)(liu)(liu)(liu)體狀態：大(da)(da)有氣(qi)(qi)態，液(ye)態或混合(he)狀態，特別是口(kou)徑(jing)大(da)(da)于DN25時(shi)定要(yao)(yao)(yao)(yao)區分開來；　　4）流(liu)(liu)(liu)(liu)體粘(zhan)(zhan)度：通(tong)常(chang)在50cSt以下可(ke)(ke)任意(yi)選(xuan)(xuan)(xuan)擇(ze)，若超(chao)過此(ci)值，則(ze)要(yao)(yao)(yao)(yao)選(xuan)(xuan)(xuan)用(yong)高(gao)粘(zhan)(zhan)度電(dian)(dian)磁(ci)閥(fa)(fa)。　　3、根(gen)(gen)據(ju)(ju)壓力參數(shu)(shu)選(xuan)(xuan)(xuan)擇(ze)電(dian)(dian)磁(ci)閥(fa)(fa)的(de)(de)(de)(de)：原理和結(jie)構品種　　1）公(gong)(gong)稱(cheng)壓力：這個(ge)參數(shu)(shu)與其(qi)它通(tong)用(yong)閥(fa)(fa)門的(de)(de)(de)(de)含義是樣的(de)(de)(de)(de)，是根(gen)(gen)據(ju)(ju)管道(dao)公(gong)(gong)稱(cheng)壓力來定；　　2）工(gong)作(zuo)壓力：如果工(gong)作(zuo)壓力低則(ze)必(bi)須選(xuan)(xuan)(xuan)用(yong)直(zhi)(zhi)動(dong)或分步直(zhi)(zhi)動(dong)式(shi)(shi)原理；低工(gong)作(zuo)壓差在0.04Mpa以上時(shi)直(zhi)(zhi)動(dong)式(shi)(shi)、分步直(zhi)(zhi)動(dong)式(shi)(shi)、導式(shi)(shi)均可(ke)(ke)選(xuan)(xuan)(xuan)用(yong)。　　4、電(dian)(dian)氣(qi)(qi)選(xuan)(xuan)(xuan)擇(ze)：電(dian)(dian)壓規格(ge)應(ying)盡量優選(xuan)(xuan)(xuan)用(yong)AC220V、DC24較(jiao)為方(fang)便。　　5、根(gen)(gen)據(ju)(ju)持(chi)續工(gong)作(zuo)時(shi)間(jian)長短(duan)來選(xuan)(xuan)(xuan)擇(ze)：常(chang)閉、常(chang)開、或可(ke)(ke)持(chi)續通(tong)電(dian)(dian)　　1）當電(dian)(dian)磁(ci)閥(fa)(fa)需要(yao)(yao)(yao)(yao)長時(shi)間(jian)開啟，并且持(chi)續的(de)(de)(de)(de)時(shi)間(jian)多于關閉的(de)(de)(de)(de)時(shi)間(jian)應(ying)選(xuan)(xuan)(xuan) 用(yong)常(chang)開型(xing)；　　2）要(yao)(yao)(yao)(yao)是開啟的(de)(de)(de)(de)時(shi)間(jian)短(duan)或開和關的(de)(de)(de)(de)時(shi)間(jian)不多時(shi)，則(ze)選(xuan)(xuan)(xuan)常(chang)閉型(xing)；　　3）但是有些用(yong)于安全保(bao)護的(de)(de)(de)(de)工(gong)況，如爐(lu)、窯火焰(yan)監測，則(ze)不能選(xuan)(xuan)(xuan)常(chang)開的(de)(de)(de)(de)，應(ying)選(xuan)(xuan)(xuan)可(ke)(ke)長期通(tong)電(dian)(dian)型(xing)。分為直(zhi)(zhi)動(dong)式(shi)(shi)，導式(shi)(shi)，手(shou)動(dong)復位閥(fa)(fa)。　　6、根(gen)(gen)據(ju)(ju)環境(jing)要(yao)(yao)(yao)(yao)求(qiu)選(xuan)(xuan)(xuan)擇(ze)輔助功能：防(fang)爆、止(zhi)回、手(shou)動(dong)、防(fang)水霧、水淋、潛水。

ASCO角座閥,阿斯卡結構材質       ASCO電(dian)磁閥安全性

1、腐(fu)蝕性(xing)介質：宜選用塑料王電磁(ci)閥和全不(bu)銹(xiu)鋼(gang)；對于強腐(fu)蝕的(de)介 質必(bi)須選用隔離膜(mo)片式。中性(xing)介質，也(ye)宜選用銅合(he)金為(wei)閥殼(ke)材(cai)料的(de)電磁(ci)閥，否(fou)則，閥殼(ke)中常有銹(xiu)屑脫(tuo)落，尤(you)其(qi)是(shi)動作不(bu)頻繁的(de)場合(he)。氨用閥則不(bu)能采用銅材(cai)。　　2、爆炸性(xing)環境：必(bi)須選用相應防(fang)爆等產品，露天(tian)安(an)裝(zhuang)或粉塵(chen)多場合(he)應選用防(fang)水，防(fang)塵(chen)品種。　　3、電磁(ci)閥公稱(cheng)壓力應超(chao)過管內高工作壓力。

ASCO電磁閥(fa)適(shi)用性

1、介(jie)(jie)質特性(xing)　　1）質氣，液(ye)態或(huo)混合(he)狀態分(fen)別選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)不(bu)(bu)同品(pin)種的電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)；　　2）介(jie)(jie)質溫(wen)度(du)不(bu)(bu)同規(gui)格產(chan)品(pin)，否則線圈會(hui)燒(shao)掉，密封(feng)件(jian)老(lao)化，嚴重(zhong)影響壽命命；　　3）介(jie)(jie)質粘度(du)，通(tong)常(chang)在(zai)50cSt以(yi)下。若(ruo)超過(guo)(guo)此值(zhi)，通(tong)徑大(da)于(yu)(yu)15mm時，用(yong)(yong)(yong)(yong)多(duo)功(gong)(gong)能(neng)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)；通(tong)徑小于(yu)(yu)15mm時，用(yong)(yong)(yong)(yong)高(gao)(gao)粘度(du)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)。　　4）介(jie)(jie)質清潔度(du)不(bu)(bu)高(gao)(gao)時都應(ying)在(zai)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)前配裝反沖(chong)過(guo)(guo)濾閥(fa)(fa)(fa)，壓(ya)力(li)低時，可選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)直動(dong)膜片式電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)；　　5）介(jie)(jie)質若(ruo)是定(ding)向(xiang)流(liu)通(tong)，且不(bu)(bu)允(yun)(yun)(yun)許倒流(liu)，需(xu)用(yong)(yong)(yong)(yong)雙向(xiang)流(liu)通(tong)；　　6）介(jie)(jie)質溫(wen)度(du)應(ying)選(xuan)(xuan)(xuan)(xuan)在(zai)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)允(yun)(yun)(yun)許范圍(wei)之(zhi)內。　　2、管(guan)道參數　　1）根(gen)據(ju)介(jie)(jie)質流(liu)向(xiang)要求及(ji)(ji)管(guan)道連接方式選(xuan)(xuan)(xuan)(xuan)擇閥(fa)(fa)(fa)門通(tong)口及(ji)(ji)型號；　　2）根(gen)據(ju)流(liu)量和(he)(he)閥(fa)(fa)(fa)門Kv值(zhi)選(xuan)(xuan)(xuan)(xuan)定(ding)公(gong)稱通(tong)徑，也可選(xuan)(xuan)(xuan)(xuan)同管(guan)道內徑；　　3）工作(zuo)壓(ya)差：低工作(zuo)壓(ya)差在(zai)0.04Mpa以(yi)上是可選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)間(jian)接導式；低工作(zuo)壓(ya)差接近或(huo)小于(yu)(yu)零的必須選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)直動(dong)式或(huo)分(fen)步(bu)直接式。　　3、環(huan)(huan)(huan)境(jing)條(tiao)件(jian)　　1）環(huan)(huan)(huan)境(jing)的高(gao)(gao)和(he)(he)低溫(wen)度(du)應(ying)選(xuan)(xuan)(xuan)(xuan)在(zai)允(yun)(yun)(yun)許范圍(wei)之(zhi)內；　　2）環(huan)(huan)(huan)境(jing)中(zhong)相對濕度(du)高(gao)(gao)及(ji)(ji)有(you)水(shui)滴(di)雨淋等場合(he)，應(ying)選(xuan)(xuan)(xuan)(xuan)防水(shui)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)；　　3）環(huan)(huan)(huan)境(jing)中(zhong)經常(chang)有(you)振動(dong)，顛簸和(he)(he)沖(chong)擊(ji)等場合(he)應(ying)選(xuan)(xuan)(xuan)(xuan)特殊品(pin)種，例如船用(yong)(yong)(yong)(yong)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)；　　4）在(zai)有(you)腐蝕性(xing)或(huo)爆(bao)炸性(xing)環(huan)(huan)(huan)境(jing)中(zhong)的使用(yong)(yong)(yong)(yong)應(ying)優根(gen)據(ju)安全性(xing)要求選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)耐發(fa)蝕型；　　5）環(huan)(huan)(huan)境(jing)空間(jian)若(ruo)受限制，需(xu)選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)多(duo)功(gong)(gong)能(neng)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)，因其省(sheng)去了旁路及(ji)(ji)三只手動(dong)閥(fa)(fa)(fa)且便(bian)于(yu)(yu)在(zai)線維修。　　4、電(dian)(dian)源(yuan)條(tiao)件(jian)　　1）根(gen)據(ju)供電(dian)(dian)電(dian)(dian)源(yuan)種類，分(fen)別選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)交(jiao)流(liu)和(he)(he)直流(liu)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)。般來說(shuo)交(jiao)流(liu)電(dian)(dian)源(yuan)取用(yong)(yong)(yong)(yong)方便(bian)；　　2）電(dian)(dian)壓(ya)規(gui)格用(yong)(yong)(yong)(yong)盡量優選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)AC220V.DC24V；　　3）電(dian)(dian)源(yuan)電(dian)(dian)壓(ya)波(bo)動(dong)通(tong)常(chang)交(jiao)流(liu)選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)+%10%.-15%，直流(liu)允(yun)(yun)(yun)許±%10左右(you)，如若(ruo)超差，須采取穩壓(ya)措施；　　4）應(ying)根(gen)據(ju)電(dian)(dian)源(yuan)容(rong)量選(xuan)(xuan)(xuan)(xuan)擇額定(ding)電(dian)(dian)流(liu)和(he)(he)消(xiao)耗功(gong)(gong)率。須注意交(jiao)流(liu)起動(dong)時VA值(zhi)較高(gao)(gao)，在(zai)容(rong)量不(bu)(bu)足(zu)時應(ying)優選(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)間(jian)接導式電(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)。　　5.控制精度(du)