ZDR6DP2-4X/150YM減壓閥

ZDR6DP2-4X/150YM減壓閥 力士樂減壓閥 博世力士樂REXROTH壓力控制閥

性能

(1)調(diào)壓范圍：它是指減壓閥輸出壓力P2的可調(diào)范圍，在此范圍內(nèi)要求達(dá)到規(guī)定的精度。調(diào)壓范圍主要與調(diào)壓彈簧的剛度有關(guān)。

(2)壓力特性：它是指流量g為定值時(shí)，因輸入壓力波動而引起輸出壓力波動的特性。輸出壓力波動越小，減壓閥的特性越好。輸出壓力必須低于輸入壓力—定值才基本上不隨輸入壓力變化而變化。

(3)流量特性：它是指輸入壓力—定時(shí)，輸出壓力隨輸出流量g的變化而變化的持性。當(dāng)流量g發(fā)生變化時(shí)，輸出壓力的變化越小越好。一般輸出壓力越低，它隨輸出流量的變化波動就越小

 

減壓閥

減壓閥是利用液流流過縫隙產(chǎn)生壓力損失，使其出口壓力低于進(jìn)口壓力的壓力控制閥。

按調(diào)節(jié)要求不同，有定值減壓閥，定差減壓閥，定比減壓閥。

定值減壓閥的結(jié)構(gòu)原理

減壓閥起減壓作用且保證出口壓力為定值的條件是:當(dāng)出口壓力大于減壓閥的調(diào)定壓力，使其先導(dǎo)閥開啟。

直動式減壓閥

減壓閥的功用與特點(diǎn)：

減壓閥用在液壓系統(tǒng)中獲得壓力低于系統(tǒng)壓力的二次油路上

與溢流閥比較:

減壓閥是出口壓力控制，保證出口壓力為定值;溢流閥是進(jìn)口壓力控制，保證進(jìn)口壓力為定值。

減壓閥閥口常開;

溢流閥閥口常閉。

減壓閥有單獨(dú)的泄油口;溢流閥彈簧腔的泄漏油經(jīng)閥體

內(nèi)流道內(nèi)泄至出口。

減壓閥與溢流閥-樣有遙控口。

 

減壓閥可將閥前管路較高的液體壓力減少至閥后管路所需的水平。這里的傳輸介質(zhì)主要是水。減壓閥廣泛用于高層建筑、城市給水管網(wǎng)水壓過高的區(qū)域、礦井及其他場合，以保證給水系統(tǒng)中各用水點(diǎn)獲得適當(dāng)?shù)姆��?wù)水壓和流量。鑒于水的漏失率和浪費(fèi)程度幾乎同給水系統(tǒng)的水壓大小成正比，因此減壓閥具有改善系統(tǒng)運(yùn)行工況和潛在節(jié)水作用，據(jù)統(tǒng)計(jì)其節(jié)水效果約為30%。

減壓閥供應(yīng)型號

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氣體減壓閥是減壓閥的一種。主要用于各種氣體的減壓，空氣減壓，煤氣減壓，天然氣減壓，氮?dú)鉁p壓，氧氣減壓。氣體減壓閥一般用于常溫介質(zhì)。按照結(jié)構(gòu)不同分為先導(dǎo)式減壓閥和直接作用減壓閥。先導(dǎo)式減壓閥由導(dǎo)閥和主閥兩部分組成，導(dǎo)閥內(nèi)有壓力調(diào)節(jié)彈簧，通過調(diào)節(jié)螺釘?shù)男�轉(zhuǎn)可以改變氣體減壓閥出口壓力。直接作用式減壓閥通過轉(zhuǎn)動調(diào)節(jié)彈簧上的調(diào)節(jié)螺釘，改變調(diào)節(jié)彈簧的壓縮量，繼而改變減壓閥出口壓力。