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管道按公稱壓力和設計溫度分類明細

按管(guan)(guan)道(dao)的(de)公(gong)稱(cheng)壓(ya)(ya)(ya)(ya)力劃分(fen)時，習慣上將真空管(guan)(guan)道(dao)與低壓(ya)(ya)(ya)(ya)管(guan)(guan)道(dao)合并。凡公(gong)稱(cheng)壓(ya)(ya)(ya)(ya)力小于2.5MPa的(de)管(guan)(guan)道(dao)稱(cheng)為(wei)低壓(ya)(ya)(ya)(ya)管(guan)(guan)道(dao)；公(gong)稱(cheng)壓(ya)(ya)(ya)(ya)力為(wei)4～6.4MPa的(de)管(guan)(guan)道(dao)稱(cheng)為(wei)中(zhong)壓(ya)(ya)(ya)(ya)管(guan)(guan)道(dao)；公(gong)稱(cheng)壓(ya)(ya)(ya)(ya)力為(wei)10～100MPa的(de)管(guan)(guan)道(dao)稱(cheng)為(wei)高壓(ya)(ya)(ya)(ya)管(guan)(guan)道(dao)；公(gong)稱(cheng)壓(ya)(ya)(ya)(ya)力大于100MPa的(de)管(guan)(guan)道(dao)稱(cheng)為(wei)超高壓(ya)(ya)(ya)(ya)管(guan)(guan)道(dao)。按管(guan)(guan)道(dao)工作...

管子按用途、材質、直管工藝分類

按(an)用(yong)(yong)(yong)(yong)(yong)途分類（表4.1.1）輸(shu)送(song)用(yong)(yong)(yong)(yong)(yong)及傳熱(re)用(yong)(yong)(yong)(yong)(yong)：流體(ti)輸(shu)送(song)用(yong)(yong)(yong)(yong)(yong)管(guan)、長(chang)輸(shu)管(guan)道用(yong)(yong)(yong)(yong)(yong)管(guan)，石油裂化用(yong)(yong)(yong)(yong)(yong)管(guan)，化肥(fei)用(yong)(yong)(yong)(yong)(yong)管(guan)，鍋爐用(yong)(yong)(yong)(yong)(yong)管(guan)，換(huan)熱(re)器用(yong)(yong)(yong)(yong)(yong)管(guan)等結構用(yong)(yong)(yong)(yong)(yong)：普(pu)通結構用(yong)(yong)(yong)(yong)(yong)管(guan)，高(gao)強結構用(yong)(yong)(yong)(yong)(yong)管(guan)，機械結構用(yong)(yong)(yong)(yong)(yong)管(guan)等特殊(shu)用(yong)(yong)(yong)(yong)(yong)：鉆井用(yong)(yong)(yong)(yong)(yong)管(guan)，高(gao)壓氣體(ti)容器用(yong)(yong)(yong)(yong)(yong)管(guan)等...

半管接頭、焊支管臺、螺紋支管臺及承插焊支管臺強度要求

1.半(ban)管接頭(tou)(tou)≤公(gong)稱(cheng)直徑50mm和主(zhu)管公(gong)稱(cheng)直徑的(de)1/4，且設(she)計壓力(li)小于(yu)(yu)或等于(yu)(yu)10MPa時(shi)(shi)，在(zai)接頭(tou)(tou)端(duan)部處最小厚(hou)度≥表3.4.4的(de)厚(hou)度t，并(bing)符合圖(tu)(tu)3.4.9的(de)形式時(shi)(shi)，可免做補強計算。2.選用對焊支管臺(tai)、螺紋(wen)支管臺(tai)及承插焊支管臺(tai)（見圖(tu)(tu)3.4.10），應按設(she)計壓力(li)-溫度參數條件(jian)整體補強...

焊接支管補強板的計算安裝與工程應用

1.焊(han)接支(zhi)(zhi)管(guan)的(de)(de)補強(qiang)計(ji)算（如圖3.4.12所示），應符合(he)下列要求。2.支(zhi)(zhi)管(guan)軸線與主管(guan)軸線斜(xie)交的(de)(de)結(jie)構(gou)型式(shi)，圖中支(zhi)(zhi)管(guan)軸線與主管(guan)軸線的(de)(de)夾角β應介于(yu)45°～90°。主管(guan)為焊(han)接管(guan)時(shi)，焊(han)縫應位于(yu)主管(guan)的(de)(de)斜(xie)下方(fang)(fang)。3.開孔補強(qiang)面(mian)積的(de)(de)計(ji)算方(fang)(fang)法： ①.主管(guan)開孔需(xu)補強(qiang)的(de)(de)面(mian)積A41，應按(an)...

支管直接焊接到主管不需要進行補強的情況有哪些

符合下(xia)列情況之一者，不需要(yao)進(jin)行補(bu)強(qiang)計算，也(ye)不需要(yao)采(cai)取(qu)其他補(bu)強(qiang)措施；（1）直接(jie)焊(han)于主管上的螺紋(wen)及承插焊(han)半管箍(gu)（半管接(jie)頭），應符合下(xia)列各項要(yao)求： ①.支(zhi)管的公稱(cheng)直徑(jing)不應大于DN50； ②.支(zhi)管的外徑(jing)，與主管的外徑(jing)之比小(xiao)于或等于1/...

支管連接形式的選用與強度計算工程應用

1.某工(gong)程施(shi)工(gong)時，由于某管(guan)(guan)(guan)(guan)道的(de)三通(tong)未采購到，業主發聯絡單讓(rang)管(guan)(guan)(guan)(guan)道設計人員(yuan)判斷在主管(guan)(guan)(guan)(guan)直接開(kai)孔焊接支管(guan)(guan)(guan)(guan)是否可行。2.支管(guan)(guan)(guan)(guan)連接形式的(de)選用支管(guan)(guan)(guan)(guan)直接焊接在主管(guan)(guan)(guan)(guan)上(shang)的(de)支管(guan)(guan)(guan)(guan)連接，除下列情況外，應進行開(kai)孔補強校核，并根(gen)據校核結果采取相應的(de)補強措施(shi)；支管(guan)(guan)(guan)(guan)通(tong)過加(jia)強度接頭與主管(guan)(guan)(guan)(guan)連接；支管(guan)(guan)(guan)(guan)...

法蘭強度的計算與工程應用

1.特殊要求的(de)非標準法(fa)蘭(lan)(lan)可(ke)按GB/T150《壓(ya)力(li)容器》進行設計。 2.當(dang)法(fa)蘭(lan)(lan)除承(cheng)受(shou)內壓(ya)外，還承(cheng)受(shou)較(jiao)大(da)附(fu)加外荷(he)載(zai)(zai)（如(ru)重力(li)荷(he)載(zai)(zai)、位(wei)移(yi)荷(he)載(zai)(zai)等）時，可(ke)采用法(fa)蘭(lan)(lan)的(de)當(dang)量(liang)壓(ya)力(li)校核法(fa)蘭(lan)(lan)的(de)承(cheng)載(zai)(zai)能力(li)，法(fa)蘭(lan)(lan)的(de)當(dang)量(liang)壓(ya)力(li)不宜大(da)于法(fa)蘭(lan)(lan)的(de)許用工(gong)作壓(ya)力(li)。法(fa)蘭(lan)(lan)的(de)當(dang)量(liang)壓(ya)力(li)按下列(lie)公式確定：...

盲板厚度計算與工程應用

（1）夾(jia)在兩法蘭之(zhi)間的盲(mang)(mang)板(ban)如(ru)圖3.4.6所示，其計算(suan)(suan)厚度可按(an)式(shi)（3.4.22）確定。用(yong)整體(ti)鋼板(ban)制造(zao)時，式(shi)中(zhong)焊接接頭系數E等(deng)于1。對于永久性盲(mang)(mang)板(ban)應(ying)按(an)式(shi)（3.4.23）增加(jia)厚度附加(jia)量。（2）GB／T20801對盲(mang)(mang)板(ban)厚度計算(suan)(suan)要求如(ru)下。（3）某試壓用(yong)盲(mang)(mang)板(ban)最小(xiao)厚度計算(suan)(suan)工(gong)程應(ying)用(yong)某工(gong)程計算(suan)(suan)試...

平蓋厚度及強度計算方法

1.無拼接焊縫平蓋厚度(du)應按式(shi)(shi)（3.4.20）及式(shi)(shi)（3.4.21）計算。注(zhu)：①.坡口尺寸應符合有關的(de)規(gui)定。②.用(yong)于(yu)(yu)公(gong)稱(cheng)壓力(li)小于(yu)(yu)或等于(yu)(yu)2.5MPa和公(gong)稱(cheng)直徑小于(yu)(yu)或等于(yu)(yu)400mm的(de)管(guan)道。③.只用(yong)于(yu)(yu)水壓試驗(yan)，公(gong)稱(cheng)直徑小于(yu)(yu)或等于(yu)(yu)400mm的(de)管(guan)道。④.用(yong)于(yu)(yu)公(gong)稱(cheng)壓力(li)小于(yu)(yu)2.5MPa和...

非標準不銹鋼異徑管強度計算方法

1.無折邊的非標準不(bu)(bu)銹(xiu)(xiu)鋼異徑(jing)(jing)管（圖(tu)3.4.3）的設計，應符合下列要求(qiu)。 ①.無折邊的不(bu)(bu)銹(xiu)(xiu)鋼異徑(jing)(jing)管可采(cai)用鋼板卷焊，對偏心(xin)異徑(jing)(jing)管的焊縫宜位(wei)于如(ru)圖(tu)3.4.3（b）所示的位(wei)置。 ②.無折邊不(bu)(bu)銹(xiu)(xiu)鋼異徑(jing)(jing)管的設計壓力，應符合規(gui)范的規(gui)定。&n...

不銹鋼三通壁厚及強度計算方法

不(bu)銹(xiu)(xiu)鋼三(san)通(tong)(tong)強(qiang)度的(de)(de)計算(suan)(suan)通(tong)(tong)常采用原西德(de)鍋(guo)爐規范TRD301中(zhong)的(de)(de)壓力面積法計算(suan)(suan)公式。這種計算(suan)(suan)方法是(shi)在實(shi)驗(yan)基礎上（爆破試驗(yan)等）通(tong)(tong)過理論分析推(tui)導而得，并經工(gong)程實(shi)踐(jian)驗(yan)證，因此是(shi)可靠的(de)(de)。不(bu)銹(xiu)(xiu)鋼三(san)通(tong)(tong)產品(pin)標準主(zhu)要選用ASMEB16.9等標準。ASMEB31.3對各種不(bu)銹(xiu)(xiu)鋼三(san)通(tong)(tong)、焊(han)...

斜接彎管壁厚及強度計算方法

1.斜接彎頭（蝦(xia)(xia)米彎、蝦(xia)(xia)米腰）是常見的一種彎管型式。計算方(fang)法同ASMEB31.3-致(zhi)。對蝦(xia)(xia)半腰的使用(yong)范圍及結構上的要(yao)求(qiu)，國(guo)內外(wai)規定不(bu)一致(zhi)。國(guo)內通(tong)常要(yao)求(qiu)蝦(xia)(xia)米腰使用(yong)在溫度及壓(ya)力不(bu)太高(gao)的情(qing)況下。ASMEB31.3規定斜接角大于(yu)(yu)22.5°時，不(bu)得使用(yong)于(yu)(yu)劇烈(lie)循環工況；斜接...

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