彈簧活塞式減壓閥與膜片式的區(qū)別
減壓閥是采用控制閥體內(nèi)的啟閉件的開度來調(diào)節(jié)介質(zhì)的流量,將介質(zhì)的壓力降低,同時(shí)借助閥后壓力的作用調(diào)節(jié)啟閉件的開度,使閥后壓力保持在一定范圍內(nèi),并在閥體內(nèi)或閥后噴入冷卻水,將介質(zhì)的溫度降低,這種閥門稱為減壓減溫閥。減壓閥快易優(yōu)自動(dòng)化選型有收錄。該閥的特點(diǎn),是在進(jìn)口壓力不斷變化的情況下,保持出口壓力和溫度值在一定的范圍內(nèi)。力士樂REXROTH比例閥3DR16P5-5X-200Y-00M
活塞式
該類型的減壓閥集兩種閥―導(dǎo)閥和主閥―于一體。導(dǎo)閥的設(shè)計(jì)與直接作用式減壓閥類似。來自導(dǎo)閥的排氣壓力作用在活塞上,使活塞打開主閥。如果主閥較大,無法直接打開時(shí),這種設(shè)計(jì)就會(huì)利用入口壓力打開主閥。因此,這種類型的減壓閥,與直接作用式減壓閥相比,在相同的管道尺寸下,容量和精確度(+/-5%)更高。與直接作用式減壓閥相同的是,減壓閥內(nèi)部感知壓力,無須外部安裝傳感線。
力士樂REXROTH比例閥3DR16P5-5X-200Y-00M
薄膜式
在這種類型的減壓閥中,雙膜片代替了內(nèi)導(dǎo)式減壓閥中的活塞。這個(gè)增大的膜片面積能夠打開更大的主閥,并且在相同的管道尺寸下,其容量比內(nèi)導(dǎo)式活塞減壓閥更大。另外,膜片對(duì)壓力變化更為敏感,精確度可達(dá)+/-1%。精確性更高是由于下游傳感線的定位(閥的外部),其所在位置氣體或液體動(dòng)蕩更少。該減壓閥非常靈活,可以采用不同類型的導(dǎo)閥(例如壓力閥、溫度閥、空氣裝載閥、電磁閥或幾種閥同時(shí)配套適用)。
力士樂REXROTH比例閥3DR16P5-5X-200Y-00M
各項(xiàng)參數(shù)
1、公稱壓力:1.0MPa、1.6MPa、2.5MPa
減壓閥
2、殼體試驗(yàn)壓力:P=1.5PN
3、密封試驗(yàn)壓力:P=1.1PN
4、出口壓力:PN1.0MPa調(diào)節(jié)閥0.09~0.8MPa
PN1.6MPa調(diào)節(jié)閥0.10~1.2MPa
PN2.5MPa調(diào)節(jié)閥0.15~1.6MPa
5、適用介質(zhì):水
6、適用溫度:0℃~80℃
力士樂REXROTH比例閥3DR16P5-5X-200Y-00M
減壓閥主要控制主閥的固定出口壓力,主閥出口壓力不因進(jìn)口壓力變化而改變,并不因主閥出口流量的變化而改變其出口壓力。適用于工業(yè)給水、消防供水及生活用水管網(wǎng)系統(tǒng)。
減壓閥與溢流閥的區(qū)別:
(1)靜止?fàn)顟B(tài),減壓閥閥口常開,溢流閥閥口常閉;
(2)減壓閥控制出口壓力穩(wěn)定,而溢流閥控制進(jìn)口壓力穩(wěn)定;
(3)減壓閥閥口隨出口壓力的升高而關(guān)小,溢流閥閥口隨進(jìn)口壓力的升高而開大;
(4)減壓閥進(jìn)出油口都是壓力油路,經(jīng)先導(dǎo)閥的回油必須單獨(dú)引回油箱,而溢流閥則和出口合并一同流回油箱。
我司經(jīng)銷相關(guān)型號(hào)如下:
4WE6M6X/EW110N9K4
S1.5GW2000P (P=W)
2AD225C-B35RL1-AS06-B2N1,R911295780
7006729
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4WMDA6D5X/F
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DRE61-1X/100MG24K4M
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0811404706 4WRLE 10 E1-80SJ-3X/G24K0/A1M-755
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0811404741 4WRPEH 6 C B04L-2X/G24K0/A1M
0811404742 4WRPE 6 R5-32M-2X/G24K0/A1M-838