2008年(nian)(nian)西氣(qi)東輸二(er)線(xian)(xian)工(gong)(gong)程(cheng)的起動(dong)，從新疆到上(shang)海(hai)再(zai)到廣州，全(quan)長8800km，選用管線(xian)(xian)直徑DN1200（NPS48），輸送壓(ya)力12MPa，這樣(yang)就(jiu)需要Class900，DN1200（NPS48）全(quan)焊(han)接(jie)閥(fa)(fa)(fa)體管線(xian)(xian)球(qiu)閥(fa)(fa)(fa)。這種高(gao)(gao)壓(ya)大(da)口(kou)徑全(quan)焊(han)接(jie)管線(xian)(xian)球(qiu)閥(fa)(fa)(fa)，2007年(nian)(nian)在(zai)全(quan)世界服役(yi)的13臺(tai)(tai)。二(er)線(xian)(xian)工(gong)(gong)程(cheng)的主(zhu)干線(xian)(xian)上(shang)，40″Class600以上(shang)的緊急切斷閥(fa)(fa)(fa)亦全(quan)部(bu)從國(guo)(guo)(guo)外進口(kou)。32″以下在(zai)國(guo)(guo)(guo)內采(cai)購(gou)。同(tong)時，在(zai)國(guo)(guo)(guo)家(jia)能源局的主(zhu)持下，2009年(nian)(nian)4月(yue)在(zai)沈陽召開(kai)(kai)“天然氣(qi)長輸管線(xian)(xian)關(guan)鍵設(she)備(bei)國(guo)(guo)(guo)產化”工(gong)(gong)作會議(yi)，張(zhang)國(guo)(guo)(guo)寶主(zhu)任和(he)中石油(you)(you)廖永遠(yuan)副總經理參加會議(yi)，指示大(da)口(kou)徑高(gao)(gao)壓(ya)全(quan)焊(han)接(jie)管線(xian)(xian)球(qiu)閥(fa)(fa)(fa)國(guo)(guo)(guo)產化，應予立(li)項，這對降低(di)西氣(qi)東輸工(gong)(gong)程(cheng)造(zao)價，保證(zheng)國(guo)(guo)(guo)家(jia)能源供應的安全(quan)，振興裝備(bei)制造(zao)業具有(you)(you)重(zhong)要意義(yi)。并(bing)于2009年(nian)(nian)11月(yue)23日在(zai)北京釣魚(yu)臺(tai)(tai)國(guo)(guo)(guo)賓(bin)館召開(kai)(kai)天然氣(qi)長輸管道關(guan)鍵設(she)備(bei)國(guo)(guo)(guo)產化啟動(dong)及簽(qian)約儀式。中石油(you)(you)與上(shang)海(hai)耐萊斯(si)·詹(zhan)姆斯(si)伯雷閥(fa)(fa)(fa)門(men)有(you)(you)限公(gong)司簽(qian)訂10臺(tai)(tai)Class600，Class900磅級(ji)，口(kou)徑DN1000，DN1200大(da)口(kou)徑高(gao)(gao)壓(ya)全(quan)焊(han)接(jie)閥(fa)(fa)(fa)體管線(xian)(xian)球(qiu)閥(fa)(fa)(fa)的技術開(kai)(kai)發合同(tong)。在(zai)6個月(yue)的生產周期內完成了(le)試制任務，并(bing)于2011年(nian)(nian)通過工(gong)(gong)業性運行試驗，產品已在(zai)西氣(qi)東輸三(san)線(xian)(xian)服役(yi)。浙(zhe)江克亞閥(fa)(fa)(fa)門(men)有(you)(you)限公(gong)司致力于提供氣(qi)動(dong)高(gao)(gao)平(ping)臺(tai)(tai)球(qiu)閥(fa)(fa)(fa)設(she)備(bei)，歡(huan)迎您的來電！陜西不銹鋼高(gao)(gao)平(ping)臺(tai)(tai)球(qiu)閥(fa)(fa)(fa)費(fei)用

球(qiu)閥(fa)(fa)(fa)是(shi)由旋(xuan)(xuan)(xuan)塞閥(fa)(fa)(fa)演變而(er)來，不同的(de)是(shi)旋(xuan)(xuan)(xuan)塞體(ti)是(shi)球(qiu)體(ti)，有圓形通(tong)(tong)(tong)孔或通(tong)(tong)(tong)道(dao)通(tong)(tong)(tong)過其軸線。當球(qiu)旋(xuan)(xuan)(xuan)轉90°時，在進、出口處應全部呈(cheng)現球(qiu)面，從而(er)截斷流(liu)動(dong)。球(qiu)閥(fa)(fa)(fa)只需要用(yong)(yong)旋(xuan)(xuan)(xuan)轉90°的(de)操作(zuo)(zuo)和(he)很(hen)小的(de)轉動(dong)力(li)(li)矩(ju)就能關閉(bi)嚴密。完全平(ping)等(deng)的(de)閥(fa)(fa)(fa)體(ti)內腔為介(jie)質(zhi)(zhi)提(ti)(ti)供了阻力(li)(li)很(hen)小、直(zhi)通(tong)(tong)(tong)的(de)流(liu)道(dao)。通(tong)(tong)(tong)常(chang)認為球(qiu)閥(fa)(fa)(fa)通(tong)(tong)(tong)常(chang)適(shi)宜直(zhi)接做開閉(bi)使用(yong)(yong)，但近年來的(de)發展已將(jiang)球(qiu)閥(fa)(fa)(fa)設計成使它(ta)具有節流(liu)和(he)控制流(liu)量的(de)用(yong)(yong)途。球(qiu)閥(fa)(fa)(fa)的(de)主要特(te)點(dian)是(shi)本身結(jie)構緊(jin)湊(cou)，易于操作(zuo)(zuo)和(he)維(wei)修，適(shi)用(yong)(yong)于水、溶劑、酸和(he)天然氣(qi)等(deng)一般(ban)工(gong)(gong)作(zuo)(zuo)介(jie)質(zhi)(zhi)，而(er)且還適(shi)用(yong)(yong)于工(gong)(gong)作(zuo)(zuo)條件惡劣的(de)介(jie)質(zhi)(zhi)，如氧氣(qi)、過氧化氫、甲烷(wan)和(he)乙烯(xi)等(deng)。球(qiu)閥(fa)(fa)(fa)閥(fa)(fa)(fa)體(ti)可(ke)以是(shi)整體(ti)的(de)，也可(ke)以是(shi)組(zu)合式的(de)。山東(dong)美標(biao)低(di)平(ping)臺球(qiu)閥(fa)(fa)(fa)浙(zhe)江克亞閥(fa)(fa)(fa)門有限公(gong)司(si)為您提(ti)(ti)供鑄鋼高平(ping)臺球(qiu)閥(fa)(fa)(fa)設備。

本球閥(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)密(mi)(mi)封(feng)結(jie)(jie)構。密(mi)(mi)封(feng)圈(quan)2緊(jin)裝在閥(fa)(fa)(fa)(fa)(fa)座(zuo)3上，閥(fa)(fa)(fa)(fa)(fa)座(zuo)3在法蘭(lan)7中靠O型密(mi)(mi)封(feng)圈(quan)4密(mi)(mi)封(feng)，密(mi)(mi)封(feng)圈(quan)2借助于碟(die)形(xing)彈簧5預(yu)先壓(ya)緊(jin)在球體(ti)(ti)1上，調整(zheng)調節(jie)墊片6，便可調節(jie)密(mi)(mi)封(feng)面的(de)(de)(de)予緊(jin)比(bi)壓(ya)。采用碟(die)形(xing)彈簧的(de)(de)(de)密(mi)(mi)封(feng)結(jie)(jie)構形(xing)式，具有密(mi)(mi)封(feng)帶自動(dong)補(bu)償的(de)(de)(de)作(zuo)用。密(mi)(mi)封(feng)圈(quan)與球體(ti)(ti)間(jian)的(de)(de)(de)密(mi)(mi)封(feng)除靠碟(die)形(xing)彈簧預(yu)先壓(ya)緊(jin)保證(zheng)密(mi)(mi)封(feng)外，尚靠密(mi)(mi)封(feng)圈(quan)內徑(jing)DWN和閥(fa)(fa)(fa)(fa)(fa)座(zuo)外徑(jing)DJH所形(xing)成(cheng)的(de)(de)(de)環面積上的(de)(de)(de)介質作(zuo)用力壓(ya)緊(jin)球體(ti)(ti)以達到密(mi)(mi)封(feng)，密(mi)(mi)封(feng)的(de)(de)(de)可靠性(xing)很大(da)程(cheng)度(du)上取決(jue)于密(mi)(mi)封(feng)面的(de)(de)(de)平均直徑(jing)DMP與閥(fa)(fa)(fa)(fa)(fa)座(zuo)外徑(jing)DJH之比(bi)。如(ru)果DJH/DMP值不夠大(da)時(shi)，球閥(fa)(fa)(fa)(fa)(fa)將不能保證(zheng)可靠密(mi)(mi)封(feng);如(ru)果DJH/DMP值過(guo)大(da)，將造成(cheng)密(mi)(mi)封(feng)過(guo)載(zai)，而使閥(fa)(fa)(fa)(fa)(fa)門(men)的(de)(de)(de)開關扭(niu)矩增加，磨損加快

使用(yong)(yong)范圍雙偏心半(ban)(ban)球閥適(shi)合各(ge)(ge)類通用(yong)(yong)行(xing)業的(de)(de)(de)要求用(yong)(yong)閥，如(ru)水(shui)(shui)、污水(shui)(shui)、廢水(shui)(shui)、蒸汽、氣、紙漿等(deng)介質(zhi)。如(ru)果密(mi)(mi)封副(fu)采用(yong)(yong)Cr-Mn-Si硬質(zhi)合金(jin)，并有(you)耐(nai)(nai)火(huo)、防爆和防靜電(dian)功(gong)能(neng)(neng)(neng)(neng)，則適(shi)合中(zhong)高溫介質(zhi)要求。如(ru)煤(mei)(mei)氣、焦爐煤(mei)(mei)氣、水(shui)(shui)煤(mei)(mei)氣和天然氣等(deng)場合。如(ru)果密(mi)(mi)封副(fu)(半(ban)(ban)球體(ti)、閥座(zuo))和閥體(ti)流道經過碳化(hua)鎢特殊工藝(yi)處理，則具有(you)高效節能(neng)(neng)(neng)(neng)，耐(nai)(nai)磨(mo)性好，密(mi)(mi)封性能(neng)(neng)(neng)(neng)可(ke)(ke)靠(kao)(kao)，操作輕便，啟閉(bi)迅速，使用(yong)(yong)壽命長等(deng)優點，是(shi)工業硅行(xing)業管道上用(yong)(yong)閥的(de)(de)(de)理想選擇。因其半(ban)(ban)球體(ti)與閥座(zuo)瞬間(jian)脫離及(ji)瞬間(jian)壓緊(jin)特性，適(shi)合介質(zhi)中(zhong)含有(you)顆粒(li)的(de)(de)(de)苛刻工況，可(ke)(ke)廣泛應用(yong)(yong)于冶金(jin)、選礦、電(dian)力(li)等(deng)生產工藝(yi)中(zhong)高爐煤(mei)(mei)粉噴吹、制(zhi)粉系統以及(ji)除塵系統中(zhong)的(de)(de)(de)各(ge)(ge)種管線控制(zhi)。在瞬間(jian)脫離及(ji)瞬間(jian)壓緊(jin)過程中(zhong)，半(ban)(ban)球體(ti)與閥座(zuo)有(you)擠切作用(yong)(yong)能(neng)(neng)(neng)(neng)除去(qu)密(mi)(mi)封面(mian)上的(de)(de)(de)結垢與粘連物，能(neng)(neng)(neng)(neng)保證密(mi)(mi)封嚴緊(jin)可(ke)(ke)靠(kao)(kao)。浙江克(ke)亞閥門(men)有(you)限公(gong)司(si)致力(li)于提(ti)供氣動高平臺球閥設備，竭誠為您設備。

此(ci)零(ling)件(jian)(jian)是(shi)(shi)(shi)閥(fa)(fa)體，主(zhu)要(yao)(yao)加(jia)工(gong)(gong)(gong)(gong)面是(shi)(shi)(shi)外(wai)圓(yuan)(yuan)(yuan)、內孔(kong)(kong)、端(duan)面、階臺(tai)孔(kong)(kong)、內螺紋(wen)和(he)溝槽(cao)等，而且加(jia)工(gong)(gong)(gong)(gong)內表面比外(wai)表面多，就帶(dai)來(lai)了許多困難：（1）孔(kong)(kong)加(jia)工(gong)(gong)(gong)(gong)是(shi)(shi)(shi)在零(ling)件(jian)(jian)的(de)(de)內部(bu)是(shi)(shi)(shi)行(xing)，切削情況(kuang)不(bu)易直(zhi)接用眼睛來(lai)觀察(cha)；（2）切屑不(bu)易排(pai)出，冷卻液難以注入切削區域(yu)；（3）當加(jia)工(gong)(gong)(gong)(gong)時(shi)(shi)(shi)，壁厚比較(jiao)薄，加(jia)工(gong)(gong)(gong)(gong)時(shi)(shi)(shi)容(rong)易產生(sheng)變形；（4）內孔(kong)(kong)的(de)(de)測(ce)量要(yao)(yao)比外(wai)圓(yuan)(yuan)(yuan)難，尤其是(shi)(shi)(shi)小(xiao)孔(kong)(kong)。就閥(fa)(fa)體零(ling)件(jian)(jian)來(lai)說：（1）該(gai)工(gong)(gong)(gong)(gong)件(jian)(jian)是(shi)(shi)(shi)以左端(duan)面和(he)軸(zhou)線(xian)為基(ji)準，根據基(ji)面先行(xing)的(de)(de)原則，首先一(yi)道工(gong)(gong)(gong)(gong)序(xu)應(ying)以右端(duan)面外(wai)圓(yuan)(yuan)(yuan)定位加(jia)工(gong)(gong)(gong)(gong)左端(duan)面及內孔(kong)(kong)。（2）因閥(fa)(fa)體零(ling)件(jian)(jian)的(de)(de)壁厚較(jiao)薄，在各道工(gong)(gong)(gong)(gong)序(xu)夾持工(gong)(gong)(gong)(gong)件(jian)(jian)時(shi)(shi)(shi)應(ying)注意(yi)防止變形。（3）該(gai)工(gong)(gong)(gong)(gong)件(jian)(jian)內孔(kong)(kong)Φ20和(he)Φ35有(you)同軸(zhou)度要(yao)(yao)求(qiu)(qiu)，所以在加(jia)工(gong)(gong)(gong)(gong)時(shi)(shi)(shi)Φ20、Φ35應(ying)在一(yi)次裝夾內完成加(jia)工(gong)(gong)(gong)(gong)。（4）該(gai)工(gong)(gong)(gong)(gong)件(jian)(jian)螺紋(wen)孔(kong)(kong)4-M12對Φ35的(de)(de)軸(zhou)線(xian)有(you)位置度要(yao)(yao)求(qiu)(qiu)，所以在加(jia)工(gong)(gong)(gong)(gong)4-M12螺紋(wen)孔(kong)(kong)時(shi)(shi)(shi)，應(ying)設計符(fu)合(he)的(de)(de)鉆模，才能保證位置度的(de)(de)要(yao)(yao)求(qiu)(qiu)。鑄(zhu)鋼高平臺(tai)球閥(fa)(fa)設備(bei)，就選浙江(jiang)克亞閥(fa)(fa)門有(you)限公司，用戶的(de)(de)信(xin)賴之選，歡(huan)迎新(xin)老客戶來(lai)電！河北不(bu)銹(xiu)鋼電動球閥(fa)(fa)推薦廠家(jia)

鑄鋼高平(ping)臺球閥(fa)設備，就選浙江克亞閥(fa)門有限公司(si)，讓您滿(man)意(yi)，歡迎您的來電！陜(shan)西(xi)不銹(xiu)鋼高平(ping)臺球閥(fa)費用

采用長頸(jing)(jing)閥(fa)(fa)(fa)蓋(gai)(gai)規(gui)定(ding)低溫(wen)(wen)(wen)(wen)(wen)閥(fa)(fa)(fa)門(men)(men)(men)包(bao)括低溫(wen)(wen)(wen)(wen)(wen)緊急(ji)切斷閥(fa)(fa)(fa)、低溫(wen)(wen)(wen)(wen)(wen)截(jie)止閥(fa)(fa)(fa)、低溫(wen)(wen)(wen)(wen)(wen)止回閥(fa)(fa)(fa)，LNG專屬低溫(wen)(wen)(wen)(wen)(wen)閥(fa)(fa)(fa)，NG專屬低溫(wen)(wen)(wen)(wen)(wen)閥(fa)(fa)(fa)等(deng)，主(zhu)(zhu)要(yao)(yao)用于三(san)十萬噸(dun)乙烯，液(ye)化(hua)(hua)(hua)(hua)天(tian)然(ran)氣(qi)等(deng)化(hua)(hua)(hua)(hua)工裝置上(shang)。輸出的(de)(de)(de)液(ye)態低溫(wen)(wen)(wen)(wen)(wen)介質如乙烯、液(ye)氧、液(ye)氫、液(ye)化(hua)(hua)(hua)(hua)天(tian)然(ran)氣(qi)、液(ye)化(hua)(hua)(hua)(hua)石油產品等(deng)，不(bu)但易燃易爆，而(er)且在(zai)升溫(wen)(wen)(wen)(wen)(wen)時(shi)(shi)要(yao)(yao)氣(qi)化(hua)(hua)(hua)(hua)，氣(qi)化(hua)(hua)(hua)(hua)時(shi)(shi)，體(ti)積膨脹數百(bai)倍(bei)。規(gui)定(ding)采用長頸(jing)(jing)蓋(gai)(gai)是(shi)因(yin)為(wei)：(1)長頸(jing)(jing)閥(fa)(fa)(fa)蓋(gai)(gai)具(ju)有保(bao)(bao)護低溫(wen)(wen)(wen)(wen)(wen)閥(fa)(fa)(fa)門(men)(men)(men)填(tian)(tian)料(liao)(liao)函的(de)(de)(de)功能，因(yin)為(wei)填(tian)(tian)料(liao)(liao)函的(de)(de)(de)密封(feng)性(xing)(xing)是(shi)低溫(wen)(wen)(wen)(wen)(wen)閥(fa)(fa)(fa)的(de)(de)(de)關(guan)鍵(jian)之一。該填(tian)(tian)料(liao)(liao)函處(chu)如果泄漏(lou)(lou)，將降(jiang)低保(bao)(bao)冷(leng)效果，導致液(ye)化(hua)(hua)(hua)(hua)氣(qi)體(ti)氣(qi)化(hua)(hua)(hua)(hua)。在(zai)低溫(wen)(wen)(wen)(wen)(wen)狀(zhuang)態下隨(sui)著溫(wen)(wen)(wen)(wen)(wen)度(du)的(de)(de)(de)降(jiang)低，填(tian)(tian)料(liao)(liao)彈性(xing)(xing)逐漸消失，防漏(lou)(lou)性(xing)(xing)能隨(sui)之下降(jiang)，由于介質滲(shen)漏(lou)(lou)造成填(tian)(tian)料(liao)(liao)與閥(fa)(fa)(fa)桿處(chu)結冰，影(ying)響閥(fa)(fa)(fa)桿正常(chang)(chang)操作同時(shi)(shi)也(ye)會因(yin)閥(fa)(fa)(fa)桿上(shang)下移動而(er)漿填(tian)(tian)料(liao)(liao)劃(hua)傷，引起嚴重(zhong)泄漏(lou)(lou)。因(yin)此要(yao)(yao)保(bao)(bao)證填(tian)(tian)料(liao)(liao)臬部位的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)在(zai)8℃以上(shang)。(2)長頸(jing)(jing)閥(fa)(fa)(fa)蓋(gai)(gai)結構(gou)(gou)便(bian)于纏繞保(bao)(bao)冷(leng)材料(liao)(liao)，防止低溫(wen)(wen)(wen)(wen)(wen)閥(fa)(fa)(fa)門(men)(men)(men)冷(leng)能損失。(3)低溫(wen)(wen)(wen)(wen)(wen)閥(fa)(fa)(fa)長頸(jing)(jing)結構(gou)(gou)便(bian)于閥(fa)(fa)(fa)門(men)(men)(men)主(zhu)(zhu)件(jian)通過閥(fa)(fa)(fa)蓋(gai)(gai)拆下進(jin)行快速更(geng)(geng)換。由于設(she)備冷(leng)段中的(de)(de)(de)工藝管道和閥(fa)(fa)(fa)門(men)(men)(men)經(jing)常(chang)(chang)裝設(she)在(zai)\'冷(leng)箱\'中，長頸(jing)(jing)閥(fa)(fa)(fa)蓋(gai)(gai)可以穿(chuan)過\'冷(leng)箱\'壁伸出。更(geng)(geng)換閥(fa)(fa)(fa)門(men)(men)(men)主(zhu)(zhu)件(jian)時(shi)(shi)，只需通過閥(fa)(fa)(fa)蓋(gai)(gai)進(jin)行拆換，而(er)不(bu)需拆卸閥(fa)(fa)(fa)體(ti)。閥(fa)(fa)(fa)體(ti)與管道焊(han)接成一體(ti)，盡(jin)可能地(di)減小了冷(leng)箱的(de)(de)(de)滲(shen)漏(lou)(lou)，保(bao)(bao)證了閥(fa)(fa)(fa)門(men)(men)(men)的(de)(de)(de)密封(feng)性(xing)(xing)。陜西(xi)不(bu)銹鋼高(gao)平臺球閥(fa)(fa)(fa)費用

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