化工儀器網(wǎng)公司動(dòng)態(tài)
SMC電磁閥VX3334K-03-5G工作原理
閱讀：1764 發(fā)布時(shí)間：2018-4-9SMC電磁閥VX3334K-03-5G工作原理,；
1.1質(zhì)氣,，液態(tài)或混合狀態(tài)分別選用不同品種的電磁閥,，例ZQDF用于空氣,，ZQDF—Y用于液體， ZQDF—2（或-3）用于蒸汽,，否則易引起誤動(dòng)作,。ZDF系列多功能電磁閥則可通通于氣.液體。訂時(shí)告明介質(zhì)狀態(tài),，安裝用戶就不必再調(diào)式,。
1.2介質(zhì)溫度不同規(guī)格產(chǎn)品，否則線圈會(huì)燒掉,，密封件老化,，嚴(yán)重影響壽命命。
1.3介質(zhì)粘度,，通常在50cSt以下,。若超過此值,，通徑大于15mm用ZDF系列多功能電磁閥作特殊訂貨。通徑小于15mm訂高粘度電磁閥,。
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1.4介質(zhì)清潔度不高時(shí)都應(yīng)在電磁閥前配裝反沖過濾閥,，壓力低時(shí)尚可選用直動(dòng)膜片式電磁閥作例如CD—P,。
1.5介質(zhì)若是定向流通，且不允許倒流ZDF—N和ZQDF—N單需用雙向流通,，請(qǐng)作特殊要求提出,。
1.6介質(zhì)溫度應(yīng)選在電磁閥允許范圍之內(nèi)。
2.管道參數(shù)
2.1根據(jù)介質(zhì)流向要求及管道連接方式選擇閥門通口及型號(hào),。例如,，用于一條管道向兩條管道切換的，小通徑的選CA5和Z3F,，中等或大通徑請(qǐng)選ZDF—Z1/2,。又如控制兩條管道匯流的，請(qǐng)選ZDF—Z2/1等,。
2.2根據(jù)流量和閥門Kv值選定公稱通徑,，也可選同管道內(nèi)徑。請(qǐng)注意有的廠家未標(biāo)有Kv值,，往往閥孔尺寸小于接口管徑,，切不可貪圖價(jià)低而誤事。
2.3工作壓差
zui低工作壓差在0.04Mpa以上是可選用間接先導(dǎo)式,；zui低工作壓差接近或小于零的必須選用直動(dòng)式或分步直接式。
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3.環(huán)境條件
3.1環(huán)境的zui高和zui低溫度應(yīng)選在允許范圍之內(nèi)，如有超差需作特殊訂貨提出,。
3.2環(huán)境中相對(duì)濕度高及有水滴雨淋等場合,，應(yīng)選防水電磁閥
3.3環(huán)境中經(jīng)常有振動(dòng)，顛簸和沖擊等場合應(yīng)選特殊品種,，例如船用電磁閥,。
3.4在有腐蝕性或爆炸性環(huán)境中的使用應(yīng)優(yōu)先根據(jù)安全性要求選用耐發(fā)蝕
3.5環(huán)境空間若受限制，請(qǐng)選用多功能電磁閥,，因其省去了旁路及三只手動(dòng)閥且便于在線維修,。
4.電源條件
4. 1根據(jù)供電電源種類，分別選用交流和直流電磁閥,。一般來說交流電源取用方便,。
4.2電壓規(guī)格用盡量優(yōu)先選用AC220V.DC24V,。
4.3電源電壓波動(dòng)通常交流選用+%10%.-15%，直流允許±%10左右,，如若超差,，須采取穩(wěn)壓措施或提出特殊訂貨要求。
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4.4應(yīng)根據(jù)電源容量選擇額定電流和消耗功率。須注意交流起動(dòng)時(shí)VA值較高,，在容量不足時(shí)應(yīng)優(yōu)先選用間接導(dǎo)式電磁閥,。
5.控制精度
5.1普通電磁閥只有開、關(guān)兩個(gè)位置,，在控制精度要求高和參數(shù)要求平穩(wěn)時(shí)請(qǐng)選用多位電磁閥,；Z3CF三位常開電磁閥，具有微啟,，全開和關(guān)閉三種流量,；
ZDF－Z1/1組合多功能電磁閥具有全開、大開,、小開,、全開四種流量。
5.2動(dòng)作時(shí)間：指電信號(hào)接通或切斷至主閥動(dòng)作完成時(shí)間,，只有本公司產(chǎn)品多功能電磁閥可對(duì)開啟和關(guān)閉時(shí)間分別調(diào)節(jié),，不僅可滿足控制精度要求，還可防止水錘破壞,。
5.3泄漏量
樣本上給出的泄漏量數(shù)值為常用經(jīng)濟(jì)等級(jí),，若嫌偏高，請(qǐng)作特殊訂貨,。
二,、安全性：
1、腐蝕性介質(zhì)：宜選用塑料王電磁閥和全不銹鋼,；對(duì)于強(qiáng)腐蝕的介質(zhì)必須選用隔離膜片式,。例CD-F. Z3CF。中性介質(zhì),，也宜選用銅合金為閥殼材料的電磁閥,，否則，閥殼中常有銹屑脫落,，尤其是動(dòng)作不頻繁的場合,。氨用閥則不能采用銅材。
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