抽汽止回閥產品概述

抽汽止回閥是(shi)一種適(shi)用(yong)(yong)(yong)于(yu)電站汽輪(lun)機(ji)(ji)(ji)系(xi)統(tong)，能(neng)在(zai)(zai)機(ji)(ji)(ji)組發(fa)生故障時(shi)(shi)，根據控制系(xi)統(tong)的指(zhi)令快速關(guan)(guan)(guan)閉(bi)(bi)，并可在(zai)(zai)抽(chou)汽管道內介質反流(liu)時(shi)(shi)自動(dong)(dong)(dong)封(feng)(feng)(feng)閉(bi)(bi)，從而保(bao)(bao)障汽輪(lun)機(ji)(ji)(ji)系(xi)統(tong)正常(chang)工(gong)作的側(ce)置氣(qi)動(dong)(dong)(dong)蓄(xu)能(neng)旋啟式抽(chou)汽止回閥(fa)，其在(zai)(zai)接到關(guan)(guan)(guan)閉(bi)(bi)信(xin)號(hao)后(hou)具(ju)有快速關(guan)(guan)(guan)閉(bi)(bi)的性能(neng)，關(guan)(guan)(guan)閉(bi)(bi)時(shi)(shi)間滿(man)足汽輪(lun)機(ji)(ji)(ji)系(xi)統(tong)保(bao)(bao)護的要(yao)求，從全(quan)開到全(quan)關(guan)(guan)(guan)用(yong)(yong)(yong)時(shi)(shi)不超(chao)過0.5s。該閥(fa)流(liu)道采(cai)用(yong)(yong)(yong)流(liu)線形設計，流(liu)體阻(zu)力(li)小，閥(fa)瓣(ban)經搖桿與閥(fa)軸活動(dong)(dong)(dong)連接，閥(fa)瓣(ban)繞(rao)閥(fa)軸旋轉，可以(yi)使(shi)閥(fa)瓣(ban)準確(que)的落在(zai)(zai)閥(fa)體密(mi)封(feng)(feng)(feng)面(mian)上，保(bao)(bao)證密(mi)封(feng)(feng)(feng)面(mian)的吻合，閥(fa)體密(mi)封(feng)(feng)(feng)面(mian)傾斜相(xiang)(xiang)應(ying)角度，以(yi)減少閥(fa)門關(guan)(guan)(guan)斷時(shi)(shi)間，減輕沖擊。本產品執(zhi)行機(ji)(ji)(ji)構與閥(fa)門啟閉(bi)(bi)件動(dong)(dong)(dong)作相(xiang)(xiang)互獨立，氣(qi)缸故障不影響閥(fa)瓣(ban)關(guan)(guan)(guan)閉(bi)(bi)動(dong)(dong)(dong)作，具(ju)備防止氣(qi)動(dong)(dong)(dong)裝置失效的功(gong)能(neng)，能(neng)在(zai)(zai)氣(qi)缸出(chu)現卡阻(zu)情況下，仍(reng)能(neng)夠在(zai)(zai)介質力(li)作用(yong)(yong)(yong)下關(guan)(guan)(guan)閉(bi)(bi)，以(yi)確(que)保(bao)(bao)汽輪(lun)機(ji)(ji)(ji)系(xi)統(tong)安然無恙。

抽汽止回閥部件材料

抽汽止回閥性能規范

抽汽止回閥主要尺寸

抽汽止回閥結構圖

為了使本產品順利打開和穩定運行，并能夠快速關閉，大口徑的本閥配有重錘，位置可調整，出廠前位置基本調好(見刻線標志)，運行前可根據情況稍做調整。如果你需訂購我廠電站閥系列產(chan)品，咨詢時煩請說明公(gong)稱通徑(jing)、公(gong)稱壓力、材(cai)質(zhi)、使(shi)用介質(zhi)、工作溫度、法蘭執行標(biao)準及密封面形式等(deng)。