2008年(nian)西(xi)气(qi)东输(shu)(shu)二线(xian)(xian)工程(cheng)的起动(dong)，从(cong)新疆到上(shang)(shang)(shang)海再到广州，全(quan)(quan)(quan)长(zhang)8800km，选用(yong)管(guan)线(xian)(xian)直(zhi)径(jing)DN1200（NPS48），输(shu)(shu)送压(ya)力12MPa，这(zhei)样(yang)就需(xu)要Class900，DN1200（NPS48）全(quan)(quan)(quan)焊(han)接(jie)阀(fa)体管(guan)线(xian)(xian)球(qiu)阀(fa)。这(zhei)种高(gao)压(ya)大口(kou)(kou)(kou)径(jing)全(quan)(quan)(quan)焊(han)接(jie)管(guan)线(xian)(xian)球(qiu)阀(fa)，2007年(nian)在(zai)全(quan)(quan)(quan)世(shi)界(jie)服役的13台(tai)(tai)。二线(xian)(xian)工程(cheng)的主干线(xian)(xian)上(shang)(shang)(shang)，40″Class600以(yi)上(shang)(shang)(shang)的紧急切断(duan)阀(fa)亦(yi)全(quan)(quan)(quan)部从(cong)国(guo)(guo)(guo)外进口(kou)(kou)(kou)。32″以(yi)下在(zai)国(guo)(guo)(guo)内采(cai)购(gou)。同(tong)时，在(zai)国(guo)(guo)(guo)家能(neng)(neng)源局的主持下，2009年(nian)4月在(zai)沈阳召开“天然(ran)气(qi)长(zhang)输(shu)(shu)管(guan)线(xian)(xian)关(guan)键(jian)(jian)设备(bei)国(guo)(guo)(guo)产(chan)(chan)化(hua)”工作(zuo)会议(yi)，张国(guo)(guo)(guo)宝主任和中(zhong)石油廖永远(yuan)副总(zong)经理参加会议(yi)，指示大口(kou)(kou)(kou)径(jing)高(gao)压(ya)全(quan)(quan)(quan)焊(han)接(jie)管(guan)线(xian)(xian)球(qiu)阀(fa)国(guo)(guo)(guo)产(chan)(chan)化(hua)，应予立项，这(zhei)对降低(di)西(xi)气(qi)东输(shu)(shu)工程(cheng)造(zao)价，保证国(guo)(guo)(guo)家能(neng)(neng)源供(gong)应的安全(quan)(quan)(quan)，振兴装备(bei)制造(zao)业具有(you)(you)重要意义。并(bing)于2009年(nian)11月23日(ri)在(zai)北京钓(diao)鱼台(tai)(tai)国(guo)(guo)(guo)宾馆召开天然(ran)气(qi)长(zhang)输(shu)(shu)管(guan)道关(guan)键(jian)(jian)设备(bei)国(guo)(guo)(guo)产(chan)(chan)化(hua)启动(dong)及签约仪式。中(zhong)石油与上(shang)(shang)(shang)海耐(nai)莱斯(si)·詹姆斯(si)伯雷阀(fa)门有(you)(you)限公司签订10台(tai)(tai)Class600，Class900磅级，口(kou)(kou)(kou)径(jing)DN1000，DN1200大口(kou)(kou)(kou)径(jing)高(gao)压(ya)全(quan)(quan)(quan)焊(han)接(jie)阀(fa)体管(guan)线(xian)(xian)球(qiu)阀(fa)的技术开发合同(tong)。在(zai)6个月的生产(chan)(chan)周期内完成(cheng)了试制任务(wu)，并(bing)于2011年(nian)通(tong)过工业性运(yun)行试验，产(chan)(chan)品(pin)已在(zai)西(xi)气(qi)东输(shu)(shu)三线(xian)(xian)服役。浙江克(ke)亚阀(fa)门有(you)(you)限公司致力于提供(gong)气(qi)动(dong)高(gao)平台(tai)(tai)球(qiu)阀(fa)设备(bei)，欢迎您的来电！陕西(xi)不锈钢高(gao)平台(tai)(tai)球(qiu)阀(fa)费用(yong)

球(qiu)阀是由旋(xuan)塞阀演变(bian)而(er)来(lai)，不同的(de)(de)是旋(xuan)塞体(ti)是球(qiu)体(ti)，有圆形(xing)通(tong)(tong)孔或通(tong)(tong)道通(tong)(tong)过其轴线。当球(qiu)旋(xuan)转90°时，在进(jin)、出口处应全部呈(cheng)现球(qiu)面，从而(er)截断流(liu)动。球(qiu)阀只需(xu)要(yao)用(yong)(yong)旋(xuan)转90°的(de)(de)操作(zuo)和(he)很小的(de)(de)转动力矩就能关闭严密(mi)。完(wan)全平等(deng)的(de)(de)阀体(ti)内腔为介(jie)(jie)质提供了阻力很小、直通(tong)(tong)的(de)(de)流(liu)道。通(tong)(tong)常认为球(qiu)阀通(tong)(tong)常适宜直接做(zuo)开闭使(shi)用(yong)(yong)，但近年来(lai)的(de)(de)发展已将球(qiu)阀设计成使(shi)它具有节流(liu)和(he)控制流(liu)量的(de)(de)用(yong)(yong)途。球(qiu)阀的(de)(de)主要(yao)特(te)点(dian)是本身结(jie)构紧凑，易于操作(zuo)和(he)维修(xiu)，适用(yong)(yong)于水、溶剂、酸和(he)天然气等(deng)一般(ban)工作(zuo)介(jie)(jie)质，而(er)且还适用(yong)(yong)于工作(zuo)条(tiao)件恶(e)劣的(de)(de)介(jie)(jie)质，如氧气、过氧化氢、甲(jia)烷和(he)乙(yi)烯(xi)等(deng)。球(qiu)阀阀体(ti)可(ke)以(yi)是整体(ti)的(de)(de)，也(ye)可(ke)以(yi)是组合式(shi)的(de)(de)。山(shan)东美(mei)标低平台(tai)(tai)球(qiu)阀浙江(jiang)克亚阀门有限公司为您提供铸(zhu)钢(gang)高平台(tai)(tai)球(qiu)阀设备。

本球(qiu)(qiu)阀的(de)(de)密(mi)(mi)封(feng)(feng)(feng)结构(gou)。密(mi)(mi)封(feng)(feng)(feng)圈2紧装在(zai)阀座(zuo)3上(shang)，阀座(zuo)3在(zai)法兰(lan)7中靠(kao)O型密(mi)(mi)封(feng)(feng)(feng)圈4密(mi)(mi)封(feng)(feng)(feng)，密(mi)(mi)封(feng)(feng)(feng)圈2借助于(yu)碟形(xing)弹(dan)簧(huang)5预(yu)先压(ya)(ya)紧在(zai)球(qiu)(qiu)体(ti)1上(shang)，调整调节(jie)垫(dian)片6，便可调节(jie)密(mi)(mi)封(feng)(feng)(feng)面的(de)(de)予紧比压(ya)(ya)。采用(yong)碟形(xing)弹(dan)簧(huang)的(de)(de)密(mi)(mi)封(feng)(feng)(feng)结构(gou)形(xing)式，具有密(mi)(mi)封(feng)(feng)(feng)带自动补偿(chang)的(de)(de)作用(yong)。密(mi)(mi)封(feng)(feng)(feng)圈与球(qiu)(qiu)体(ti)间的(de)(de)密(mi)(mi)封(feng)(feng)(feng)除靠(kao)碟形(xing)弹(dan)簧(huang)预(yu)先压(ya)(ya)紧保(bao)证密(mi)(mi)封(feng)(feng)(feng)外，尚靠(kao)密(mi)(mi)封(feng)(feng)(feng)圈内径(jing)(jing)DWN和(he)阀座(zuo)外径(jing)(jing)DJH所形(xing)成的(de)(de)环面积上(shang)的(de)(de)介质作用(yong)力压(ya)(ya)紧球(qiu)(qiu)体(ti)以达到密(mi)(mi)封(feng)(feng)(feng)，密(mi)(mi)封(feng)(feng)(feng)的(de)(de)可靠(kao)性很大程度上(shang)取决于(yu)密(mi)(mi)封(feng)(feng)(feng)面的(de)(de)平均直径(jing)(jing)DMP与阀座(zuo)外径(jing)(jing)DJH之比。如果DJH/DMP值(zhi)不够大时，球(qiu)(qiu)阀将不能保(bao)证可靠(kao)密(mi)(mi)封(feng)(feng)(feng);如果DJH/DMP值(zhi)过大，将造成密(mi)(mi)封(feng)(feng)(feng)过载，而使阀门(men)的(de)(de)开(kai)关(guan)扭(niu)矩(ju)增加，磨损加快

使用范围双(shuang)偏心(xin)半(ban)球(qiu)阀(fa)(fa)适(shi)合各(ge)类通用行业的(de)(de)(de)要(yao)求用阀(fa)(fa)，如(ru)(ru)水(shui)、污(wu)水(shui)、废水(shui)、蒸(zheng)汽、气、纸浆等介质。如(ru)(ru)果密封(feng)副(fu)采用Cr-Mn-Si硬质合金，并(bing)有耐(nai)火、防(fang)爆和防(fang)静(jing)电(dian)功能(neng)，则(ze)适(shi)合中高(gao)温(wen)介质要(yao)求。如(ru)(ru)煤(mei)(mei)气、焦炉(lu)煤(mei)(mei)气、水(shui)煤(mei)(mei)气和天然气等场(chang)合。如(ru)(ru)果密封(feng)副(fu)(半(ban)球(qiu)体、阀(fa)(fa)座)和阀(fa)(fa)体流(liu)道经过碳化钨特殊工(gong)艺处(chu)理(li)，则(ze)具有高(gao)效节能(neng)，耐(nai)磨性(xing)好，密封(feng)性(xing)能(neng)可靠，操作(zuo)轻(qing)便，启闭迅(xun)速，使用寿(shou)命长等优点，是工(gong)业硅行业管(guan)道上用阀(fa)(fa)的(de)(de)(de)理(li)想(xiang)选(xuan)择。因其半(ban)球(qiu)体与阀(fa)(fa)座瞬(shun)间(jian)脱(tuo)离及瞬(shun)间(jian)压紧特性(xing)，适(shi)合介质中含(han)有颗粒的(de)(de)(de)苛刻工(gong)况，可广泛应用于(yu)(yu)冶金、选(xuan)矿(kuang)、电(dian)力(li)(li)等生产(chan)工(gong)艺中高(gao)炉(lu)煤(mei)(mei)粉喷吹、制粉系统(tong)以(yi)及除(chu)尘系统(tong)中的(de)(de)(de)各(ge)种管(guan)线控制。在瞬(shun)间(jian)脱(tuo)离及瞬(shun)间(jian)压紧过程中，半(ban)球(qiu)体与阀(fa)(fa)座有挤切作(zuo)用能(neng)除(chu)去密封(feng)面上的(de)(de)(de)结垢与粘连物，能(neng)保证(zheng)密封(feng)严紧可靠。浙江克亚阀(fa)(fa)门有限公司致力(li)(li)于(yu)(yu)提供气动高(gao)平台球(qiu)阀(fa)(fa)设备，竭诚为您设备。

此零(ling)件是阀体，主要加(jia)工(gong)面(mian)是外(wai)圆、内(nei)(nei)孔(kong)(kong)(kong)(kong)、端面(mian)、阶台孔(kong)(kong)(kong)(kong)、内(nei)(nei)螺(luo)(luo)纹和(he)沟槽等，而且(qie)加(jia)工(gong)内(nei)(nei)表面(mian)比(bi)(bi)外(wai)表面(mian)多，就带来(lai)(lai)了许多困难(nan)：（1）孔(kong)(kong)(kong)(kong)加(jia)工(gong)是在(zai)零(ling)件的(de)(de)内(nei)(nei)部(bu)是行，切(qie)削情况不(bu)(bu)易直(zhi)接用(yong)眼睛来(lai)(lai)观察(cha)；（2）切(qie)屑不(bu)(bu)易排出，冷却液难(nan)以(yi)注(zhu)(zhu)入(ru)切(qie)削区域；（3）当加(jia)工(gong)时(shi)(shi)(shi)，壁厚(hou)比(bi)(bi)较(jiao)薄(bo)，加(jia)工(gong)时(shi)(shi)(shi)容易产生(sheng)变形(xing)；（4）内(nei)(nei)孔(kong)(kong)(kong)(kong)的(de)(de)测量要比(bi)(bi)外(wai)圆难(nan)，尤(you)其是小孔(kong)(kong)(kong)(kong)。就阀体零(ling)件来(lai)(lai)说：（1）该(gai)工(gong)件是以(yi)左端面(mian)和(he)轴线(xian)(xian)为(wei)基准，根(gen)据基面(mian)先(xian)行的(de)(de)原则，首先(xian)一(yi)道工(gong)序(xu)应(ying)以(yi)右端面(mian)外(wai)圆定位(wei)(wei)(wei)加(jia)工(gong)左端面(mian)及内(nei)(nei)孔(kong)(kong)(kong)(kong)。（2）因阀体零(ling)件的(de)(de)壁厚(hou)较(jiao)薄(bo)，在(zai)各道工(gong)序(xu)夹持(chi)工(gong)件时(shi)(shi)(shi)应(ying)注(zhu)(zhu)意(yi)防止(zhi)变形(xing)。（3）该(gai)工(gong)件内(nei)(nei)孔(kong)(kong)(kong)(kong)Φ20和(he)Φ35有(you)(you)同(tong)轴度(du)要求(qiu)，所(suo)以(yi)在(zai)加(jia)工(gong)时(shi)(shi)(shi)Φ20、Φ35应(ying)在(zai)一(yi)次装夹内(nei)(nei)完(wan)成加(jia)工(gong)。（4）该(gai)工(gong)件螺(luo)(luo)纹孔(kong)(kong)(kong)(kong)4-M12对Φ35的(de)(de)轴线(xian)(xian)有(you)(you)位(wei)(wei)(wei)置度(du)要求(qiu)，所(suo)以(yi)在(zai)加(jia)工(gong)4-M12螺(luo)(luo)纹孔(kong)(kong)(kong)(kong)时(shi)(shi)(shi)，应(ying)设(she)计符(fu)合(he)的(de)(de)钻模，才能(neng)保证位(wei)(wei)(wei)置度(du)的(de)(de)要求(qiu)。铸(zhu)钢(gang)高平台球(qiu)阀设(she)备，就选(xuan)浙江(jiang)克亚阀门有(you)(you)限公司，用(yong)户(hu)的(de)(de)信(xin)赖之选(xuan)，欢迎新老(lao)客户(hu)来(lai)(lai)电！河北不(bu)(bu)锈(xiu)钢(gang)电动球(qiu)阀推(tui)荐厂家(jia)

铸(zhu)钢高平台球阀设备，就选浙(zhe)江克亚阀门有限公司(si)，让您(nin)满意，欢迎您(nin)的(de)来(lai)电！陕(shan)西(xi)不锈钢高平台球阀费用

采用(yong)长(zhang)(zhang)颈(jing)阀(fa)(fa)(fa)(fa)盖(gai)规定(ding)低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)阀(fa)(fa)(fa)(fa)门(men)(men)(men)(men)包括低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)紧急切断阀(fa)(fa)(fa)(fa)、低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)截(jie)止(zhi)阀(fa)(fa)(fa)(fa)、低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)止(zhi)回阀(fa)(fa)(fa)(fa)，LNG专属低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)阀(fa)(fa)(fa)(fa)，NG专属低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)阀(fa)(fa)(fa)(fa)等，主(zhu)要用(yong)于(yu)三十万吨乙烯，液(ye)化(hua)(hua)天然气等化(hua)(hua)工装置上(shang)。输(shu)出的液(ye)态低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)介质如乙烯、液(ye)氧、液(ye)氢、液(ye)化(hua)(hua)天然气、液(ye)化(hua)(hua)石(shi)油产(chan)品等，不(bu)但易燃易爆，而且在(zai)升温(wen)(wen)(wen)(wen)时要气化(hua)(hua)，气化(hua)(hua)时，体(ti)积膨胀数(shu)百倍。规定(ding)采用(yong)长(zhang)(zhang)颈(jing)盖(gai)是因为：(1)长(zhang)(zhang)颈(jing)阀(fa)(fa)(fa)(fa)盖(gai)具(ju)有(you)保(bao)(bao)(bao)护低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)阀(fa)(fa)(fa)(fa)门(men)(men)(men)(men)填(tian)(tian)(tian)料(liao)(liao)(liao)函(han)的功能，因为填(tian)(tian)(tian)料(liao)(liao)(liao)函(han)的密(mi)封(feng)性是低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)阀(fa)(fa)(fa)(fa)的关键之一。该填(tian)(tian)(tian)料(liao)(liao)(liao)函(han)处如果泄(xie)(xie)漏，将降低(di)(di)(di)(di)(di)保(bao)(bao)(bao)冷效果，导致液(ye)化(hua)(hua)气体(ti)气化(hua)(hua)。在(zai)低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)状态下(xia)(xia)随(sui)着温(wen)(wen)(wen)(wen)度的降低(di)(di)(di)(di)(di)，填(tian)(tian)(tian)料(liao)(liao)(liao)弹性逐(zhu)渐消(xiao)失，防漏性能随(sui)之下(xia)(xia)降，由(you)于(yu)介质渗(shen)漏造成填(tian)(tian)(tian)料(liao)(liao)(liao)与(yu)阀(fa)(fa)(fa)(fa)杆(gan)处结(jie)冰，影响(xiang)阀(fa)(fa)(fa)(fa)杆(gan)正常操作同时也会因阀(fa)(fa)(fa)(fa)杆(gan)上(shang)下(xia)(xia)移(yi)动(dong)而浆填(tian)(tian)(tian)料(liao)(liao)(liao)划伤，引起严重泄(xie)(xie)漏。因此要保(bao)(bao)(bao)证填(tian)(tian)(tian)料(liao)(liao)(liao)臬(nie)部位(wei)的温(wen)(wen)(wen)(wen)度在(zai)8℃以上(shang)。(2)长(zhang)(zhang)颈(jing)阀(fa)(fa)(fa)(fa)盖(gai)结(jie)构便于(yu)缠(chan)绕(rao)保(bao)(bao)(bao)冷材料(liao)(liao)(liao)，防止(zhi)低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)阀(fa)(fa)(fa)(fa)门(men)(men)(men)(men)冷能损失。(3)低(di)(di)(di)(di)(di)温(wen)(wen)(wen)(wen)阀(fa)(fa)(fa)(fa)长(zhang)(zhang)颈(jing)结(jie)构便于(yu)阀(fa)(fa)(fa)(fa)门(men)(men)(men)(men)主(zhu)件通(tong)过(guo)阀(fa)(fa)(fa)(fa)盖(gai)拆下(xia)(xia)进(jin)行(xing)快速更(geng)换。由(you)于(yu)设备冷段中(zhong)的工艺管(guan)道和阀(fa)(fa)(fa)(fa)门(men)(men)(men)(men)经常装设在(zai)\'冷箱(xiang)\'中(zhong)，长(zhang)(zhang)颈(jing)阀(fa)(fa)(fa)(fa)盖(gai)可(ke)以穿过(guo)\'冷箱(xiang)\'壁伸出。更(geng)换阀(fa)(fa)(fa)(fa)门(men)(men)(men)(men)主(zhu)件时，只需通(tong)过(guo)阀(fa)(fa)(fa)(fa)盖(gai)进(jin)行(xing)拆换，而不(bu)需拆卸阀(fa)(fa)(fa)(fa)体(ti)。阀(fa)(fa)(fa)(fa)体(ti)与(yu)管(guan)道焊接(jie)成一体(ti)，尽可(ke)能地减(jian)小了冷箱(xiang)的渗(shen)漏，保(bao)(bao)(bao)证了阀(fa)(fa)(fa)(fa)门(men)(men)(men)(men)的密(mi)封(feng)性。陕西(xi)不(bu)锈钢高平台(tai)球阀(fa)(fa)(fa)(fa)费用(yong)

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