2008年西气(qi)东(dong)输(shu)二(er)线(xian)(xian)(xian)工(gong)程(cheng)的(de)起动(dong)，从(cong)新(xin)疆(jiang)到(dao)上(shang)海(hai)再(zai)到(dao)广州，全(quan)长8800km，选用(yong)管(guan)(guan)线(xian)(xian)(xian)直径(jing)(jing)DN1200（NPS48），输(shu)送压(ya)力12MPa，这样就需要Class900，DN1200（NPS48）全(quan)焊(han)接阀(fa)(fa)(fa)体管(guan)(guan)线(xian)(xian)(xian)球(qiu)阀(fa)(fa)(fa)。这种高(gao)(gao)压(ya)大(da)口径(jing)(jing)全(quan)焊(han)接管(guan)(guan)线(xian)(xian)(xian)球(qiu)阀(fa)(fa)(fa)，2007年在(zai)全(quan)世界服役的(de)13台(tai)。二(er)线(xian)(xian)(xian)工(gong)程(cheng)的(de)主干线(xian)(xian)(xian)上(shang)，40″Class600以上(shang)的(de)紧急切断阀(fa)(fa)(fa)亦全(quan)部从(cong)国(guo)(guo)外进(jin)口。32″以下(xia)在(zai)国(guo)(guo)内采购(gou)。同时(shi)，在(zai)国(guo)(guo)家能(neng)源局的(de)主持下(xia)，2009年4月(yue)(yue)在(zai)沈阳召开(kai)“天(tian)然气(qi)长输(shu)管(guan)(guan)线(xian)(xian)(xian)关键设(she)备国(guo)(guo)产化”工(gong)作(zuo)会(hui)议，张国(guo)(guo)宝主任(ren)和中石(shi)油廖永远副总经理参加会(hui)议，指示大(da)口径(jing)(jing)高(gao)(gao)压(ya)全(quan)焊(han)接管(guan)(guan)线(xian)(xian)(xian)球(qiu)阀(fa)(fa)(fa)国(guo)(guo)产化，应予立(li)项，这对(dui)降(jiang)低西气(qi)东(dong)输(shu)工(gong)程(cheng)造价，保(bao)证国(guo)(guo)家能(neng)源供应的(de)安(an)全(quan)，振兴装备制造业具有重要意(yi)义(yi)。并于(yu)2009年11月(yue)(yue)23日在(zai)北京钓鱼(yu)台(tai)国(guo)(guo)宾馆召开(kai)天(tian)然气(qi)长输(shu)管(guan)(guan)道关键设(she)备国(guo)(guo)产化启(qi)动(dong)及签(qian)(qian)约仪式(shi)。中石(shi)油与上(shang)海(hai)耐莱斯·詹姆斯伯雷(lei)阀(fa)(fa)(fa)门(men)有限(xian)公(gong)司签(qian)(qian)订10台(tai)Class600，Class900磅级，口径(jing)(jing)DN1000，DN1200大(da)口径(jing)(jing)高(gao)(gao)压(ya)全(quan)焊(han)接阀(fa)(fa)(fa)体管(guan)(guan)线(xian)(xian)(xian)球(qiu)阀(fa)(fa)(fa)的(de)技术(shu)开(kai)发合同。在(zai)6个月(yue)(yue)的(de)生产周(zhou)期内完成(cheng)了试(shi)(shi)制任(ren)务，并于(yu)2011年通过工(gong)业性运行试(shi)(shi)验，产品(pin)已在(zai)西气(qi)东(dong)输(shu)三线(xian)(xian)(xian)服役。浙江克(ke)亚阀(fa)(fa)(fa)门(men)有限(xian)公(gong)司致力于(yu)提供气(qi)动(dong)高(gao)(gao)平台(tai)球(qiu)阀(fa)(fa)(fa)设(she)备，欢迎您的(de)来电！陕西不锈钢(gang)高(gao)(gao)平台(tai)球(qiu)阀(fa)(fa)(fa)费用(yong)

球(qiu)阀(fa)(fa)是由旋(xuan)塞阀(fa)(fa)演变(bian)而(er)(er)来(lai)，不(bu)同的(de)(de)(de)(de)(de)是旋(xuan)塞体(ti)是球(qiu)体(ti)，有(you)(you)圆形通(tong)孔或通(tong)道通(tong)过其轴线(xian)。当球(qiu)旋(xuan)转90°时，在进(jin)、出(chu)口处应全部呈现(xian)球(qiu)面，从而(er)(er)截断流动。球(qiu)阀(fa)(fa)只需要(yao)用旋(xuan)转90°的(de)(de)(de)(de)(de)操作和很(hen)小(xiao)的(de)(de)(de)(de)(de)转动力矩就能关(guan)闭严密。完全平等的(de)(de)(de)(de)(de)阀(fa)(fa)体(ti)内腔为介(jie)质提(ti)供(gong)了(le)阻力很(hen)小(xiao)、直(zhi)通(tong)的(de)(de)(de)(de)(de)流道。通(tong)常认为球(qiu)阀(fa)(fa)通(tong)常适宜(yi)直(zhi)接做开闭使(shi)用，但近年(nian)来(lai)的(de)(de)(de)(de)(de)发展已将球(qiu)阀(fa)(fa)设计成使(shi)它(ta)具(ju)有(you)(you)节(jie)流和控制流量的(de)(de)(de)(de)(de)用途。球(qiu)阀(fa)(fa)的(de)(de)(de)(de)(de)主要(yao)特点是本身结构紧(jin)凑，易于(yu)操作和维修，适用于(yu)水、溶剂、酸(suan)和天(tian)然气(qi)等一般工作介(jie)质，而(er)(er)且还适用于(yu)工作条件恶劣的(de)(de)(de)(de)(de)介(jie)质，如氧气(qi)、过氧化氢、甲(jia)烷和乙烯等。球(qiu)阀(fa)(fa)阀(fa)(fa)体(ti)可以是整(zheng)体(ti)的(de)(de)(de)(de)(de)，也可以是组(zu)合式的(de)(de)(de)(de)(de)。山东美标低(di)平台球(qiu)阀(fa)(fa)浙江克亚阀(fa)(fa)门有(you)(you)限公司(si)为您提(ti)供(gong)铸钢高平台球(qiu)阀(fa)(fa)设备。

本球(qiu)阀(fa)的(de)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)结构(gou)。密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)(quan)(quan)2紧(jin)(jin)(jin)(jin)装在(zai)(zai)阀(fa)座(zuo)3上，阀(fa)座(zuo)3在(zai)(zai)法兰7中靠O型(xing)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)(quan)(quan)4密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)，密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)(quan)(quan)2借助于碟(die)形(xing)弹(dan)(dan)簧5预先(xian)压(ya)(ya)(ya)紧(jin)(jin)(jin)(jin)在(zai)(zai)球(qiu)体1上，调整调节垫片6，便可(ke)调节密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)面(mian)的(de)予(yu)紧(jin)(jin)(jin)(jin)比压(ya)(ya)(ya)。采用碟(die)形(xing)弹(dan)(dan)簧的(de)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)结构(gou)形(xing)式，具(ju)有密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)带自动补偿(chang)的(de)作用。密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)(quan)(quan)与球(qiu)体间(jian)的(de)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)除靠碟(die)形(xing)弹(dan)(dan)簧预先(xian)压(ya)(ya)(ya)紧(jin)(jin)(jin)(jin)保证(zheng)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)外，尚靠密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)(quan)(quan)内径DWN和阀(fa)座(zuo)外径DJH所形(xing)成(cheng)(cheng)的(de)环面(mian)积上的(de)介质(zhi)作用力压(ya)(ya)(ya)紧(jin)(jin)(jin)(jin)球(qiu)体以达到密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)，密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)的(de)可(ke)靠性很大(da)程(cheng)度上取决于密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)面(mian)的(de)平(ping)均直径DMP与阀(fa)座(zuo)外径DJH之比。如果DJH/DMP值不够大(da)时，球(qiu)阀(fa)将(jiang)不能保证(zheng)可(ke)靠密(mi)(mi)(mi)(mi)(mi)封(feng)(feng);如果DJH/DMP值过大(da)，将(jiang)造成(cheng)(cheng)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)过载，而使阀(fa)门的(de)开关(guan)扭矩增加，磨损加快

使用(yong)(yong)范围双偏心半(ban)(ban)球(qiu)(qiu)阀适合(he)各(ge)类通用(yong)(yong)行业的要求用(yong)(yong)阀，如水(shui)(shui)、污水(shui)(shui)、废水(shui)(shui)、蒸汽、气(qi)、纸浆等介质。如果(guo)密封副采用(yong)(yong)Cr-Mn-Si硬质合(he)金，并有(you)(you)耐火、防(fang)爆和防(fang)静电(dian)(dian)功能(neng)(neng)，则(ze)适合(he)中(zhong)(zhong)高(gao)(gao)(gao)温介质要求。如煤(mei)气(qi)、焦(jiao)炉煤(mei)气(qi)、水(shui)(shui)煤(mei)气(qi)和天然气(qi)等场合(he)。如果(guo)密封副(半(ban)(ban)球(qiu)(qiu)体(ti)、阀座)和阀体(ti)流道(dao)经过碳化钨特(te)殊工(gong)(gong)(gong)艺处(chu)理，则(ze)具有(you)(you)高(gao)(gao)(gao)效(xiao)节(jie)能(neng)(neng)，耐磨性(xing)好，密封性(xing)能(neng)(neng)可(ke)靠，操作(zuo)轻便，启闭迅速，使用(yong)(yong)寿(shou)命长等优(you)点，是(shi)工(gong)(gong)(gong)业硅行业管道(dao)上(shang)用(yong)(yong)阀的理想(xiang)选择。因其半(ban)(ban)球(qiu)(qiu)体(ti)与(yu)阀座瞬(shun)间(jian)脱离(li)及瞬(shun)间(jian)压紧(jin)特(te)性(xing)，适合(he)介质中(zhong)(zhong)含有(you)(you)颗粒的苛刻(ke)工(gong)(gong)(gong)况，可(ke)广泛应用(yong)(yong)于(yu)冶金、选矿(kuang)、电(dian)(dian)力等生产工(gong)(gong)(gong)艺中(zhong)(zhong)高(gao)(gao)(gao)炉煤(mei)粉(fen)喷吹、制粉(fen)系统(tong)以及除(chu)尘(chen)系统(tong)中(zhong)(zhong)的各(ge)种管线(xian)控制。在瞬(shun)间(jian)脱离(li)及瞬(shun)间(jian)压紧(jin)过程中(zhong)(zhong)，半(ban)(ban)球(qiu)(qiu)体(ti)与(yu)阀座有(you)(you)挤(ji)切作(zuo)用(yong)(yong)能(neng)(neng)除(chu)去密封面上(shang)的结垢与(yu)粘连物，能(neng)(neng)保证密封严紧(jin)可(ke)靠。浙江克亚阀门有(you)(you)限公司致力于(yu)提供气(qi)动高(gao)(gao)(gao)平(ping)台球(qiu)(qiu)阀设备，竭诚为您设备。

此零(ling)件(jian)(jian)是(shi)阀体(ti)(ti)，主要(yao)(yao)(yao)加(jia)(jia)(jia)工(gong)面(mian)是(shi)外(wai)(wai)(wai)圆(yuan)、内(nei)(nei)孔、端(duan)(duan)面(mian)、阶台孔、内(nei)(nei)螺纹(wen)和(he)沟槽(cao)等(deng)，而且加(jia)(jia)(jia)工(gong)内(nei)(nei)表面(mian)比(bi)外(wai)(wai)(wai)表面(mian)多(duo)，就带来(lai)了(le)许多(duo)困难：（1）孔加(jia)(jia)(jia)工(gong)是(shi)在(zai)(zai)零(ling)件(jian)(jian)的(de)(de)内(nei)(nei)部是(shi)行，切(qie)削情况不(bu)易直接用眼(yan)睛来(lai)观察(cha)；（2）切(qie)屑(xie)不(bu)易排出，冷却液难以(yi)注(zhu)入切(qie)削区域；（3）当加(jia)(jia)(jia)工(gong)时(shi)(shi)，壁厚比(bi)较(jiao)薄，加(jia)(jia)(jia)工(gong)时(shi)(shi)容易产生变(bian)形；（4）内(nei)(nei)孔的(de)(de)测量要(yao)(yao)(yao)比(bi)外(wai)(wai)(wai)圆(yuan)难，尤其是(shi)小孔。就阀体(ti)(ti)零(ling)件(jian)(jian)来(lai)说：（1）该(gai)工(gong)件(jian)(jian)是(shi)以(yi)左(zuo)(zuo)端(duan)(duan)面(mian)和(he)轴线(xian)为(wei)基(ji)准，根据基(ji)面(mian)先行的(de)(de)原则，首先一(yi)道工(gong)序应以(yi)右(you)端(duan)(duan)面(mian)外(wai)(wai)(wai)圆(yuan)定(ding)位(wei)加(jia)(jia)(jia)工(gong)左(zuo)(zuo)端(duan)(duan)面(mian)及内(nei)(nei)孔。（2）因阀体(ti)(ti)零(ling)件(jian)(jian)的(de)(de)壁厚较(jiao)薄，在(zai)(zai)各道工(gong)序夹持工(gong)件(jian)(jian)时(shi)(shi)应注(zhu)意防止变(bian)形。（3）该(gai)工(gong)件(jian)(jian)内(nei)(nei)孔Φ20和(he)Φ35有(you)同轴度(du)要(yao)(yao)(yao)求(qiu)(qiu)，所以(yi)在(zai)(zai)加(jia)(jia)(jia)工(gong)时(shi)(shi)Φ20、Φ35应在(zai)(zai)一(yi)次装夹内(nei)(nei)完成(cheng)加(jia)(jia)(jia)工(gong)。（4）该(gai)工(gong)件(jian)(jian)螺纹(wen)孔4-M12对(dui)Φ35的(de)(de)轴线(xian)有(you)位(wei)置度(du)要(yao)(yao)(yao)求(qiu)(qiu)，所以(yi)在(zai)(zai)加(jia)(jia)(jia)工(gong)4-M12螺纹(wen)孔时(shi)(shi)，应设计符合的(de)(de)钻(zuan)模，才能(neng)保证(zheng)位(wei)置度(du)的(de)(de)要(yao)(yao)(yao)求(qiu)(qiu)。铸钢高平(ping)台球(qiu)阀设备，就选浙江克亚阀门有(you)限公司(si)，用户(hu)的(de)(de)信(xin)赖(lai)之选，欢迎新老客户(hu)来(lai)电(dian)(dian)！河(he)北不(bu)锈钢电(dian)(dian)动球(qiu)阀推荐厂家

铸钢高平台球(qiu)阀设备，就(jiu)选浙江克亚阀门(men)有(you)限(xian)公司(si)，让您(nin)满意，欢迎(ying)您(nin)的来电！陕西不锈钢高平台球(qiu)阀费用

采用(yong)长(zhang)颈阀(fa)(fa)盖规定(ding)低(di)(di)(di)(di)温(wen)(wen)阀(fa)(fa)门(men)包括(kuo)低(di)(di)(di)(di)温(wen)(wen)紧急(ji)切断阀(fa)(fa)、低(di)(di)(di)(di)温(wen)(wen)截止(zhi)阀(fa)(fa)、低(di)(di)(di)(di)温(wen)(wen)止(zhi)回阀(fa)(fa)，LNG专(zhuan)属低(di)(di)(di)(di)温(wen)(wen)阀(fa)(fa)，NG专(zhuan)属低(di)(di)(di)(di)温(wen)(wen)阀(fa)(fa)等(deng)(deng)，主要(yao)用(yong)于(yu)(yu)三十万吨乙烯(xi)，液(ye)(ye)化(hua)(hua)(hua)天然(ran)(ran)气等(deng)(deng)化(hua)(hua)(hua)工装置上。输出的液(ye)(ye)态(tai)(tai)低(di)(di)(di)(di)温(wen)(wen)介(jie)质如(ru)乙烯(xi)、液(ye)(ye)氧、液(ye)(ye)氢、液(ye)(ye)化(hua)(hua)(hua)天然(ran)(ran)气、液(ye)(ye)化(hua)(hua)(hua)石油产品等(deng)(deng)，不(bu)但易燃易爆，而(er)且在升温(wen)(wen)时(shi)要(yao)气化(hua)(hua)(hua)，气化(hua)(hua)(hua)时(shi)，体(ti)(ti)(ti)积膨胀数百(bai)倍。规定(ding)采用(yong)长(zhang)颈盖是因(yin)为：(1)长(zhang)颈阀(fa)(fa)盖具(ju)有保(bao)护低(di)(di)(di)(di)温(wen)(wen)阀(fa)(fa)门(men)填料(liao)(liao)函的功能(neng)，因(yin)为填料(liao)(liao)函的密(mi)封性(xing)是低(di)(di)(di)(di)温(wen)(wen)阀(fa)(fa)的关键之(zhi)一。该填料(liao)(liao)函处如(ru)果泄漏，将降低(di)(di)(di)(di)保(bao)冷(leng)效果，导(dao)致液(ye)(ye)化(hua)(hua)(hua)气体(ti)(ti)(ti)气化(hua)(hua)(hua)。在低(di)(di)(di)(di)温(wen)(wen)状(zhuang)态(tai)(tai)下随着温(wen)(wen)度(du)的降低(di)(di)(di)(di)，填料(liao)(liao)弹性(xing)逐渐消(xiao)失，防漏性(xing)能(neng)随之(zhi)下降，由于(yu)(yu)介(jie)质渗漏造(zao)成填料(liao)(liao)与阀(fa)(fa)杆处结(jie)冰，影响阀(fa)(fa)杆正常操作同时(shi)也会因(yin)阀(fa)(fa)杆上下移动而(er)浆填料(liao)(liao)划伤，引起严(yan)重(zhong)泄漏。因(yin)此(ci)要(yao)保(bao)证(zheng)填料(liao)(liao)臬部位(wei)的温(wen)(wen)度(du)在8℃以(yi)上。(2)长(zhang)颈阀(fa)(fa)盖结(jie)构便于(yu)(yu)缠绕(rao)保(bao)冷(leng)材料(liao)(liao)，防止(zhi)低(di)(di)(di)(di)温(wen)(wen)阀(fa)(fa)门(men)冷(leng)能(neng)损失。(3)低(di)(di)(di)(di)温(wen)(wen)阀(fa)(fa)长(zhang)颈结(jie)构便于(yu)(yu)阀(fa)(fa)门(men)主件通过(guo)阀(fa)(fa)盖拆(chai)下进(jin)行快速更(geng)换。由于(yu)(yu)设(she)备(bei)冷(leng)段中的工艺管道(dao)和阀(fa)(fa)门(men)经常装设(she)在\'冷(leng)箱\'中，长(zhang)颈阀(fa)(fa)盖可(ke)以(yi)穿过(guo)\'冷(leng)箱\'壁(bi)伸(shen)出。更(geng)换阀(fa)(fa)门(men)主件时(shi)，只(zhi)需通过(guo)阀(fa)(fa)盖进(jin)行拆(chai)换，而(er)不(bu)需拆(chai)卸(xie)阀(fa)(fa)体(ti)(ti)(ti)。阀(fa)(fa)体(ti)(ti)(ti)与管道(dao)焊接成一体(ti)(ti)(ti)，尽可(ke)能(neng)地减小了(le)冷(leng)箱的渗漏，保(bao)证(zheng)了(le)阀(fa)(fa)门(men)的密(mi)封性(xing)。陕西(xi)不(bu)锈(xiu)钢(gang)高(gao)平(ping)台(tai)球阀(fa)(fa)费用(yong)

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