BURKERT電磁閥*,德國寶德電磁閥

BURKERT電磁閥流體的溫度必須小于選用電磁閥的標定溫度。 電磁閥允許液體粘度一般在20CST以下，大于20CST應注明。 工作壓差，管路zui高壓差在小于0.04MPa時應選用如ZS,2W,ZQDF,ZCM系列等直動式和分步直動式；zui低工作壓差大于0.04MPa時可選用先導式（壓差式）電磁閥；zui高工作壓差應小于電磁閥的zui大標定壓力；一般電磁閥都是單向工作，因此要注意是否有反壓差，如有安裝止回閥。 流體清潔度不高時應在電磁閥前安裝過濾器，一般電磁閥對介質要求清潔度要好。 注意流量孔徑和接管口徑；電磁閥一般只有開關兩位控制；條件允許請安裝旁路管，便于維修；有水錘現象時要定制電磁閥的開閉時間調節。 注意環境溫度對電磁閥的影響 電源電流和消耗功率應根據輸出容量選取，電源電壓一般允許±10%左右，必須注意交流起動時VA值較高。
可靠性
電磁閥分為常閉和常開二種；一般選用常閉型，通電打開，斷電關閉；但在開啟時間很長關閉時很短時要選用常開型了。 壽命試驗，工廠一般屬于型式試驗項目，確切地說我國還沒有電磁閥的專業標準，因此選用電磁閥廠家時慎重。 動作時間很短頻率較高時一般選取直動式，大口徑選用快速系列。
一般電磁閥不防水，在條件不允許時請選用防水型，工廠可以定做。 電磁閥的zui高標定公稱壓力一定要超過管路內的zui高壓力，否則使用壽命會縮短或產生其它意外情況。 有腐蝕性液體的應選用全不銹鋼型，強腐蝕性流體宜選用塑料王（SLF）電磁閥。 爆炸性環境必須選用相應的防爆產品。
經濟性
有很多電磁閥可以通用，但在能滿足以上三點的基礎上應選用的產品。電磁閥的選型 電磁閥選型首先應該依次遵循安全性，可靠性，適用性，經濟性四大原則，其次是根據六個方面的現場工況（即管道參數、流體參數、壓力參數、電氣參數、動作方式、特殊要求進行選擇）。
通徑規格（即DN）、接口方式 1、按照現場管道內徑尺寸或流量要求來確定通徑（DN）尺寸。 2、接口方式，一般>DN50要選擇法蘭接口，≤DN50則可根據用戶需要自由選擇。
流體參數
材質、溫度組 1、腐蝕性流體：宜選用耐腐蝕電磁閥和全不銹鋼；食用超凈流體：宜選用食品級不銹鋼材質電磁閥。 2、高溫流體：要選擇采用耐高溫的電工材料和密封材料制造的電磁閥，而且要選擇活塞式結構類型的。 3、流體狀態：大至有氣態，液態或混合狀態，特別是口徑大于DN25訂貨時一定要區分開來。 4、流體粘度：通常在50cSt以下可任意選擇，若超過此值，則要選用高粘度電磁閥。
1.介(jie)質(zhi)特(te)性(xing) 1.1質(zhi)氣，液態(tai)(tai)或混(hun)合(he)狀(zhuang)態(tai)(tai)分別(bie)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)不同(tong)品(pin)種(zhong)(zhong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)，例ZQDF用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)空氣，ZQDF—Y用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)液體， ZQDF—2（或-3）用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)蒸汽，否(fou)(fou)則(ze)易(yi)引(yin)起誤動(dong)(dong)作(zuo)(zuo)(zuo)。ZDF系列(lie)多(duo)功能(neng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)則(ze)可(ke)(ke)(ke)(ke)通(tong)(tong)(tong)(tong)通(tong)(tong)(tong)(tong)于(yu)(yu)(yu)氣.液體。訂時(shi)告明(ming)介(jie)質(zhi)狀(zhuang)態(tai)(tai)，安裝用(yong)(yong)(yong)(yong)戶就(jiu)不必再調式(shi)。 1.2介(jie)質(zhi)溫度(du)(du)(du)不同(tong)規(gui)格(ge)產品(pin)，否(fou)(fou)則(ze)線(xian)圈會(hui)燒掉，密封件(jian)老化(hua)，嚴重影(ying)響壽命(ming)命(ming)。 1.3介(jie)質(zhi)粘度(du)(du)(du)，通(tong)(tong)(tong)(tong)常(chang)(chang)在50cSt以下。若(ruo)(ruo)超過此值(zhi)，通(tong)(tong)(tong)(tong)徑大(da)(da)于(yu)(yu)(yu)15mm用(yong)(yong)(yong)(yong)ZDF系列(lie)多(duo)功能(neng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)作(zuo)(zuo)(zuo)特(te)殊(shu)(shu)訂貨。通(tong)(tong)(tong)(tong)徑小(xiao)于(yu)(yu)(yu)15mm訂高(gao)粘度(du)(du)(du)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)。 1.4介(jie)質(zhi)清潔(jie)度(du)(du)(du)不高(gao)時(shi)都(dou)應在電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)前配裝反沖(chong)過濾閥(fa)(fa)(fa)(fa)，壓(ya)力低(di)(di)時(shi)尚可(ke)(ke)(ke)(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)直動(dong)(dong)膜(mo)片式(shi)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)作(zuo)(zuo)(zuo)例如(ru)(ru)(ru)CD—P。 1.5介(jie)質(zhi)若(ruo)(ruo)是定向(xiang)流(liu)通(tong)(tong)(tong)(tong)，且不允(yun)許(xu)倒流(liu)ZDF—N和(he)(he)(he)ZQDF—N單需用(yong)(yong)(yong)(yong)雙向(xiang)流(liu)通(tong)(tong)(tong)(tong)，請作(zuo)(zuo)(zuo)特(te)殊(shu)(shu)要(yao)(yao)(yao)求提出(chu)。 1.6介(jie)質(zhi)溫度(du)(du)(du)應選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)在電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)允(yun)許(xu)范圍之內(nei)。 2.管道參數 2.1根(gen)據(ju)介(jie)質(zhi)流(liu)向(xiang)要(yao)(yao)(yao)求及(ji)管道連(lian)接(jie)方(fang)式(shi)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)擇(ze)閥(fa)(fa)(fa)(fa)門(men)通(tong)(tong)(tong)(tong)口及(ji)型號(hao)。例如(ru)(ru)(ru)，用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)一條(tiao)(tiao)管道向(xiang)兩(liang)條(tiao)(tiao)管道切(qie)換的(de)(de)，小(xiao)通(tong)(tong)(tong)(tong)徑的(de)(de)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)CA5和(he)(he)(he)Z3F，中等(deng)或大(da)(da)通(tong)(tong)(tong)(tong)徑請選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)ZDF—Z1/2。又如(ru)(ru)(ru)控制(zhi)兩(liang)條(tiao)(tiao)管道匯流(liu)的(de)(de)，請選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)ZDF—Z2/1等(deng)。 2.2根(gen)據(ju)流(liu)量和(he)(he)(he)閥(fa)(fa)(fa)(fa)門(men)Kv值(zhi)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)定公稱通(tong)(tong)(tong)(tong)徑，也可(ke)(ke)(ke)(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)同(tong)管道內(nei)徑。請注意(yi)有(you)(you)(you)的(de)(de)廠家未標(biao)有(you)(you)(you)Kv值(zhi)，往往閥(fa)(fa)(fa)(fa)孔尺(chi)寸小(xiao)于(yu)(yu)(yu)接(jie)口管徑，切(qie)不可(ke)(ke)(ke)(ke)貪圖價低(di)(di)而誤事。 2.3工(gong)作(zuo)(zuo)(zuo)壓(ya)差(cha)(cha)(cha) zui低(di)(di)工(gong)作(zuo)(zuo)(zuo)壓(ya)差(cha)(cha)(cha)在0.04Mpa以上(shang)是可(ke)(ke)(ke)(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)間(jian)(jian)(jian)(jian)接(jie)先(xian)導(dao)式(shi)；zui低(di)(di)工(gong)作(zuo)(zuo)(zuo)壓(ya)差(cha)(cha)(cha)接(jie)近或小(xiao)于(yu)(yu)(yu)零的(de)(de)必須選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)直動(dong)(dong)式(shi)或分步(bu)直接(jie)式(shi)。 3.環(huan)境(jing)(jing)條(tiao)(tiao)件(jian) 3.1環(huan)境(jing)(jing)的(de)(de)zui高(gao)和(he)(he)(he)zui低(di)(di)溫度(du)(du)(du)應選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)在允(yun)許(xu)范圍之內(nei)，如(ru)(ru)(ru)有(you)(you)(you)超差(cha)(cha)(cha)需作(zuo)(zuo)(zuo)特(te)殊(shu)(shu)訂貨提出(chu)。 3.2環(huan)境(jing)(jing)中相對(dui)濕度(du)(du)(du)高(gao)及(ji)有(you)(you)(you)水(shui)滴(di)雨淋等(deng)場(chang)合(he)，應選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)防(fang)水(shui)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa) 3.3環(huan)境(jing)(jing)中經(jing)常(chang)(chang)有(you)(you)(you)振動(dong)(dong)，顛簸和(he)(he)(he)沖(chong)擊等(deng)場(chang)合(he)應選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)特(te)殊(shu)(shu)品(pin)種(zhong)(zhong)，例如(ru)(ru)(ru)船用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)。 3.4在有(you)(you)(you)腐蝕(shi)性(xing)或爆炸性(xing)環(huan)境(jing)(jing)中的(de)(de)使用(yong)(yong)(yong)(yong)應優先(xian)根(gen)據(ju)安全性(xing)要(yao)(yao)(yao)求選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)耐發(fa)蝕(shi) 3.5環(huan)境(jing)(jing)空間(jian)(jian)(jian)(jian)若(ruo)(ruo)受限(xian)制(zhi)，請選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)多(duo)功能(neng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)，因其省去了旁路及(ji)三(san)(san)只手(shou)動(dong)(dong)閥(fa)(fa)(fa)(fa)且便于(yu)(yu)(yu)在線(xian)維修。 4.電(dian)(dian)(dian)(dian)(dian)源(yuan)條(tiao)(tiao)件(jian) 4. 1根(gen)據(ju)供電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)源(yuan)種(zhong)(zhong)類，分別(bie)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)交流(liu)和(he)(he)(he)直流(liu)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)。一般來說交流(liu)電(dian)(dian)(dian)(dian)(dian)源(yuan)取用(yong)(yong)(yong)(yong)方(fang)便。 4.2電(dian)(dian)(dian)(dian)(dian)壓(ya)規(gui)格(ge)用(yong)(yong)(yong)(yong)盡量優先(xian)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)AC220V.DC24V。 4.3電(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)壓(ya)波動(dong)(dong)通(tong)(tong)(tong)(tong)常(chang)(chang)交流(liu)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)+%10%.-15%，直流(liu)允(yun)許(xu)±%10左右(you)，如(ru)(ru)(ru)若(ruo)(ruo)超差(cha)(cha)(cha)，須采取穩(wen)壓(ya)措施或提出(chu)特(te)殊(shu)(shu)訂貨要(yao)(yao)(yao)求。 4.4應根(gen)據(ju)電(dian)(dian)(dian)(dian)(dian)源(yuan)容(rong)量選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)擇(ze)額定電(dian)(dian)(dian)(dian)(dian)流(liu)和(he)(he)(he)消耗功率。須注意(yi)交流(liu)起動(dong)(dong)時(shi)VA值(zhi)較高(gao)，在容(rong)量不足時(shi)應優先(xian)選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)間(jian)(jian)(jian)(jian)接(jie)導(dao)式(shi)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)。 5.控制(zhi)精(jing)度(du)(du)(du) 5.1普通(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)只有(you)(you)(you)開(kai)、關兩(liang)個(ge)位置，在控制(zhi)精(jing)度(du)(du)(du)要(yao)(yao)(yao)求高(gao)和(he)(he)(he)參數要(yao)(yao)(yao)求平穩(wen)時(shi)請選(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)多(duo)位電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)；Z3CF三(san)(san)位常(chang)(chang)開(kai)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)，具(ju)有(you)(you)(you)微啟，全開(kai)和(he)(he)(he)關閉(bi)三(san)(san)種(zhong)(zhong)流(liu)量； ZDF－Z1/1組合(he)多(duo)功能(neng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)具(ju)有(you)(you)(you)全開(kai)、大(da)(da)開(kai)、小(xiao)開(kai)、全開(kai)四種(zhong)(zhong)流(liu)量。 5.2動(dong)(dong)作(zuo)(zuo)(zuo)時(shi)間(jian)(jian)(jian)(jian)：指電(dian)(dian)(dian)(dian)(dian)信號(hao)接(jie)通(tong)(tong)(tong)(tong)或切(qie)斷至主閥(fa)(fa)(fa)(fa)動(dong)(dong)作(zuo)(zuo)(zuo)完成時(shi)間(jian)(jian)(jian)(jian)，只有(you)(you)(you)本公司產品(pin)多(duo)功能(neng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)可(ke)(ke)(ke)(ke)對(dui)開(kai)啟和(he)(he)(he)關閉(bi)時(shi)間(jian)(jian)(jian)(jian)分別(bie)調節，不僅可(ke)(ke)(ke)(ke)滿足控制(zhi)精(jing)度(du)(du)(du)要(yao)(yao)(yao)求，還(huan)可(ke)(ke)(ke)(ke)防(fang)止水(shui)錘破壞。 5.3泄(xie)漏量 樣本上(shang)給出(chu)的(de)(de)泄(xie)漏量數值(zhi)為(wei)常(chang)(chang)用(yong)(yong)(yong)(yong)經(jing)濟等(deng)級，若(ruo)(ruo)嫌偏高(gao)，請作(zuo)(zuo)(zuo)特(te)殊(shu)(shu)訂貨。

BURKERT電磁閥*,德國寶德電磁閥