常用型號(hào)ENDA溫控器ECH7700-LV工作方式

常用型號(hào)ENDA溫控器ECH7700-LV工作方式
常用型號(hào)ENDA溫控器ECH7700-LV工作方式
為了保護(hù)閥門不受損壞，安在閥門行程的終點(diǎn)的限位開(kāi)關(guān)會(huì)切斷電機(jī)電源，同時(shí)當(dāng)安全力矩被超過(guò)時(shí)，力矩感應(yīng)置也會(huì)切斷電機(jī)電源，位置開(kāi)關(guān)用于指示閥門的開(kāi)關(guān)狀態(tài)，安離合器置的手輪機(jī)構(gòu)可在電源故障時(shí)手動(dòng)操作閥門。這種類型執(zhí)行機(jī)構(gòu)的主要優(yōu)點(diǎn)是所有部件都安在一個(gè)殼體內(nèi)，在這個(gè)防水、防塵、防爆的外殼內(nèi)集成了所有基本及先進(jìn)的功能。主要缺點(diǎn)是，當(dāng)電源故障時(shí)，閥門只能保持在原位，只有使用備用電源系統(tǒng)，閥門才能實(shí)現(xiàn)故障安全位置（故障開(kāi)或故障關(guān)）2.電動(dòng)單回轉(zhuǎn)式執(zhí)行機(jī)構(gòu)這種執(zhí)行機(jī)構(gòu)類似于電動(dòng)多回轉(zhuǎn)執(zhí)行機(jī)構(gòu)，主要差別是執(zhí)行機(jī)構(gòu)終輸出的是1/4轉(zhuǎn)記9度的運(yùn)動(dòng)。

EI(electronics-inc) 100 MagnaValve 流量閥ELMA轉(zhuǎn)換開(kāi)關(guān)06-1113
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也可考慮多臺(tái)同型號(hào)水泵并聯(lián)運(yùn)行與單臺(tái)水泵獨(dú)立運(yùn)行相結(jié)合的方式，選泵時(shí)應(yīng)選擇在并聯(lián)運(yùn)行時(shí)每臺(tái)水泵的工況點(diǎn)接近區(qū)的左邊界，水泵在單獨(dú)運(yùn)行時(shí)，工況點(diǎn)向右移動(dòng)，仍可處在區(qū)運(yùn)行，這樣選擇的結(jié)果，可促使水泵在整個(gè)工況變化范圍內(nèi)的運(yùn)行效率都較高。這種方式，同樣也因臺(tái)數(shù)多，管理麻煩。在水泵供水系統(tǒng)中，采用其他多種節(jié)能措施是非常必要的。泵適應(yīng)流量、揚(yáng)程變化的調(diào)節(jié)方式按照大工況選泵，與實(shí)際運(yùn)行工況相差較大，降低水泵效率。