- 產(chǎn)品名稱(chēng)： Rexroth比例減壓閥3DREME10P-7X/200YG24K31F1V
- 所屬類(lèi)別： 力士樂(lè )先導式比例減壓閥
產(chǎn)品簡(jiǎn)述
Rexroth比例減壓閥3DREME10P-7X/200YG24K31F1V是上海韋米機電設備有限公司的【重點(diǎn)優(yōu)勢產(chǎn)品】之一
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Rexroth比例減壓閥3DREME10P-7X/200YG24K31F1V
比例減壓閥屬高壓閥系列，適用于冶金、石油、液壓、水壓試驗機組上。主要用途：是采用節流耗能達到降壓的功能，能使高壓、超高壓設備和高壓管道內的高壓水通過(guò)此閥將高壓水降至低壓所需壓力后排出，使高壓系統壓力均勻降低。
比例減壓閥由油缸、閥體兩部分組成。而節流孔板和高壓調節閥設計為一體，閥門(mén)開(kāi)關(guān)排泄流量和降壓由液壓缸行程控制。能任意調整排泄壓力及流量，安全，方便。
比例減壓閥：壓降從50兆帕至于1.6兆帕，可以調節排泄壓力。
比例減壓閥工作原理:
導閥的開(kāi)啟都是利用頂部的調節螺栓順時(shí)針?lè )较驍Q動(dòng)，使彈簧縮產(chǎn)生的彈力，使導閥膜片向下凹陷，作用在導閥連桿上的力，使之向下位移打開(kāi)導閥。當導閥開(kāi)啟后，上游進(jìn)汽管段A腔的蒸汽通過(guò)α通道（供汽調節通道），經(jīng)過(guò)導閥進(jìn)入導閥環(huán)形汽腔，由β通道直接送到下面的活塞汽缸上腔。在A(yíng)腔蒸汽不斷的供給下，壓力持續升高，推動(dòng)活塞下行打開(kāi)主閥，這時(shí)蒸汽源源不斷從A腔流至B腔。當下游出口管段B腔負荷滿(mǎn)足的情況下，余多的蒸汽又使B腔內的壓力不斷升高。不斷升高的壓力通過(guò)γ通道（壓力感應通道）反饋到導閥膜片下腔，使導閥膜片向上突起，克服了上部調節彈簧的壓力，導閥被關(guān)小或關(guān)閉。從而，關(guān)小或關(guān)閉來(lái)自上游α通道的蒸汽源。當活塞汽缸上腔壓力下降時(shí)，在下面復位彈簧的作用下，主閥被關(guān)小或關(guān)閉，這時(shí)B腔內的壓力開(kāi)始下降，這樣周而復始達到調壓的目的。
型號 (Z)DRE and ZDREE 10
比例減壓閥，先導式
規格6和10
安裝面按DIN 24340 A型和ISO 4401
用于降低系統壓力的閥
比例電磁鐵操作
底板安裝，DRE 6型
疊加式，ZDRE 6 和10型
線(xiàn)性壓力/指令值特性曲線(xiàn)
集成電控器（OBE），用于ZDREE 10
型號 DRE(M) 和 DRE(M)E
比例減壓閥，先導式
規格10至32
安裝面按DIN 24340 D型
用于降低系統壓力的閥
比例電磁鐵操作
底板安裝
線(xiàn)性壓力/指令值特性曲線(xiàn)
用于DREM和DREME型的最大減壓功能
可選單向閥，在A(yíng)和B油口之間
集成電控器（OBE），用于DREE和DREME
型號 DRE
比例減壓閥，先導式
規格6和10
規格6：安裝面按ISO 4401
規格10：安裝面按ISO 5781-AG-06-2-A
用于降低系統壓力的閥
比例電磁鐵操作
通過(guò)電磁鐵電樞位置進(jìn)行調節
DREBE型的集成電控器（OBE）
型號 3DRE(M) 和 3DRE(M)E
比例減壓閥，先導式
規格10和16
安裝面按DIN 24340 A型和ISO 4401
用于降低系統壓力的閥
比例電磁鐵操作
底板安裝
用于3DREE and 3DREME的集成電控器（OBE）
型號 DRS and ZDRS
比例減壓閥，先導式，有直流馬達操作
規格6
安裝面按ISO 4401
用于降低系統壓的閥，有溢流功能
直流馬達操作
底板安裝
作為疊加閥
集成壓力監測，可選
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比例式減壓閥 閥門(mén)利用閥體內部活塞兩端截面積不同產(chǎn)生的壓力差，改變閥后的壓力達到減壓的目的，比例準確，工作平穩，壽命長(cháng)，適用溫度高，既可減動(dòng)壓，又可減靜壓，水平、垂直安裝均可。
比例式減壓閥,外形美觀(guān),質(zhì)量可靠,比例準確,工作平穩,既減動(dòng)壓也減靜壓。 該閥利用閥體內部活塞兩端不同載面積產(chǎn)生的壓力差,改變閥后的壓力,達到減壓目的。比例式減壓閥的減壓比例是：2∶1，3∶1，4∶1，3∶2，5∶2等，亦可根據要求設計特殊比例的減壓閥。
比例閥當在閥后管網(wǎng)上無(wú)用水時(shí)閥門(mén)關(guān)閉，閥前后壓力比是定值；當閥后管網(wǎng)啟用消火栓或噴頭噴水時(shí)，閥前壓力大于閥后壓力，推動(dòng)活塞后移比例式減壓閥打開(kāi)，閥后管網(wǎng)壓力隨流量的增加而降低（符合流量-壓力特性曲線(xiàn)），直至達到平衡位置，活塞停止移動(dòng)。 當閥后管網(wǎng)停止用水時(shí)由于活塞后端壓強升高，比例式減壓閥活塞失去平衡狀態(tài)而前移，比例式減壓閥關(guān)閉。一般選擇比例式減壓閥是使設計流量在流量-壓力特性曲線(xiàn)的直線(xiàn)段上，這樣閥后壓力與閥前壓力仍呈比例關(guān)系。
