阿托斯單向閥故障處理
又稱止回閥或(huo)逆止閥。用于(yu)液壓系統中(zhong)防止油(you)流反向流動,或(huo)者用于氣動系統中防(fang)止壓縮空氣逆向流動。
單向閥有直(zhi)(zhi)通式和直(zhi)(zhi)角式兩種(zhong)。直(zhi)(zhi)通式單向閥用螺紋連接安裝在管路上(shang)。直角式(shi)(shi)單(dan)向(xiang)(xiang)(xiang)閥有(you)螺(luo)紋連接、板式(shi)(shi)連接和法蘭(lan)連接三種形式(shi)(shi)。液(ye)控(kong)單(dan)向(xiang)(xiang)(xiang)閥也稱閉鎖閥或保壓(ya)閥,它與單(dan)向(xiang)(xiang)(xiang)閥相同(tong),用(yong)(yong)(yong)以防止油(you)(you)(you)液(ye)反向(xiang)(xiang)(xiang)流(liu)動(dong)。但在液(ye)壓(ya)回路中(zhong)需要油(you)(you)(you)流(liu)反向(xiang)(xiang)(xiang)流(liu)動(dong)時又可(ke)利用(yong)(yong)(yong)控(kong)制(zhi)油(you)(you)(you)壓(ya),打開單(dan)向(xiang)(xiang)(xiang)閥,使油(you)(you)(you)流(liu)在兩個方向(xiang)(xiang)(xiang)都可(ke)流(liu)動(dong)。液(ye)控(kong)單(dan)向(xiang)(xiang)(xiang)閥采用(yong)(yong)(yong)錐(zhui)形閥芯,因(yin)此(ci)密封性能好。在要求封閉油(you)(you)(you)路時,可(ke)用(yong)(yong)(yong)此(ci)閥作為油(you)(you)(you)路的(de)單(dan)向(xiang)(xiang)(xiang)鎖緊而起保壓(ya)作用(yong)(yong)(yong)。液(ye)控(kong)單(dan)向(xiang)(xiang)(xiang)閥控(kong)制(zhi)油(you)(you)(you)的(de)泄(xie)漏(lou)方式(shi)(shi)有(you)內(nei)泄(xie)式(shi)(shi)和外(wai)泄(xie)式(shi)(shi)二種。在油(you)(you)(you)流(liu)反向(xiang)(xiang)(xiang)出(chu)口無(wu)背(bei)壓(ya)的(de)油(you)(you)(you)路中(zhong)可(ke)用(yong)(yong)(yong)內(nei)泄(xie)式(shi)(shi);否則需用(yong)(yong)(yong)外(wai)泄(xie)式(shi)(shi),以降低控(kong)制(zhi)油(you)(you)(you)壓(ya)力。
單向閥常見故(gu)障
①閥瓣(ban)打碎(sui);②介質倒流。
引(yin)起(qi)閥(fa)瓣(ban)打碎(sui)的原因:
止回閥前后介質壓力(li)處于接近平衡而又互(hu)相“拉鋸”的狀(zhuang)態(tai),閥瓣經常與閥座拍打,某(mou)些脆性材料(如鑄鐵、黃(huang)銅等)做成(cheng)的閥瓣就被打碎(sui)。
預防的(de)辦法是采用(yong)閥(fa)瓣為韌性材料(liao)的(de)止回閥(fa)。
介質倒流(liu)的原(yuan)因:
①密(mi)封面破(po)壞(huai); ②夾(jia)入雜(za)質。修復密封面和清(qing)洗雜(za)質,就能防止倒流。
雙旋啟動式止回閥用途及特性
旋(xuan)啟式(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)的(de)(de)(de)功(gong)能(neng)是用(yong)(yong)(yong)(yong)來防(fang)止(zhi)(zhi)管路中的(de)(de)(de)介(jie)(jie)質(zhi)倒流。止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)屬于自動(dong)閥(fa)(fa)(fa)類(lei),啟閉件靠流動(dong)介(jie)(jie)質(zhi)的(de)(de)(de)力(li)(li)量自行開啟或關閉。止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)只用(yong)(yong)(yong)(yong)于介(jie)(jie)質(zhi)單向流動(dong)的(de)(de)(de)管路上,阻止(zhi)(zhi)介(jie)(jie)質(zhi)回(hui)流,以防(fang)發生事故。 本公司生產的(de)(de)(de)美標(biao)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)按照(zhao)ANSI B16.34標(biao)準設(she)計制造。品種有:旋(xuan)啟式(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa),升(sheng)降(jiang)(jiang)式(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa),升(sheng)降(jiang)(jiang)立式(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa);Class 150lB~900Lb;NPS 1"~28"工(gong)作溫度-40~570℃;閥(fa)(fa)(fa)體材料有:WCB,WC1,WC6,WC9,C5,CF3,CF8,CF3M,CF8M等(deng)(deng)。 旋(xuan)啟式(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)適(shi)(shi)用(yong)(yong)(yong)(yong)介(jie)(jie)質(zhi):水,蒸(zheng)氣,油品,硝酸(suan),強(qiang)氧化(hua)介(jie)(jie)質(zhi)和尿(niao)素(su)等(deng)(deng)。廣泛應用(yong)(yong)(yong)(yong)于電站,石油,化(hua)工(gong),制藥,食品等(deng)(deng)行業。可與進口設(she)備直接(jie)配(pei)套使(shi)用(yong)(yong)(yong)(yong)。對(dui)夾式(shi)止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)適(shi)(shi)用(yong)(yong)(yong)(yong)于公稱壓力(li)(li)PN1.0MPa~42.0MPa、Class150~2500;公稱通(tong)徑DN12~1200mm、NPS1/2~48;工(gong)作溫度-196~540℃的(de)(de)(de)各種管路上,用(yong)(yong)(yong)(yong)于防(fang)止(zhi)(zhi)介(jie)(jie)質(zhi)倒流。通(tong)過選用(yong)(yong)(yong)(yong)不同的(de)(de)(de)材質(zhi),可適(shi)(shi)用(yong)(yong)(yong)(yong)于水、蒸(zheng)汽、油品、硝酸(suan)、醋酸(suan)、強(qiang)氧化(hua)性介(jie)(jie)質(zhi)及(ji)尿(niao)素(su)等(deng)(deng)多種介(jie)(jie)質(zhi)。
阿托斯單向(xiang)閥型號:
ADRL-20/2
ADRL-20/8 40
ADRL-32
ADRL-32/2
AGRL-10
AGRL-20
AGRL-32 41
ADR-10/2/12
ADR-10/2/15
ADR-10/2/20
ADR-10/2/22
ADR-10/8
ADR-15
ADR-15/2
ADR-15/4
ADR-20
ADR-20/2
ADR-20/4
ADR-25
AGRLE-20
ADR-06
ADR-06/2
ADR-06/4
ADR-06/8
ADR-32 31
ADR-32/2
ADR-32/4 31
ADRL-10 40
ADRL-10/2 40
ADRL-15 40
ADRL-20
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