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管道按公稱壓力和設計溫度分類明細

按管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)的(de)(de)公(gong)(gong)(gong)(gong)稱壓(ya)力(li)劃分時(shi)，習(xi)慣上將真空(kong)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)與低(di)壓(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)合并。凡公(gong)(gong)(gong)(gong)稱壓(ya)力(li)小于(yu)2.5MPa的(de)(de)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)稱為(wei)(wei)(wei)低(di)壓(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)；公(gong)(gong)(gong)(gong)稱壓(ya)力(li)為(wei)(wei)(wei)4～6.4MPa的(de)(de)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)稱為(wei)(wei)(wei)中(zhong)壓(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)；公(gong)(gong)(gong)(gong)稱壓(ya)力(li)為(wei)(wei)(wei)10～100MPa的(de)(de)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)稱為(wei)(wei)(wei)高(gao)壓(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)；公(gong)(gong)(gong)(gong)稱壓(ya)力(li)大于(yu)100MPa的(de)(de)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)稱為(wei)(wei)(wei)超高(gao)壓(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)。按管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)工作(zuo)...

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)(shu)送用(yong)(yong)(yong)(yong)(yong)及(ji)傳熱用(yong)(yong)(yong)(yong)(yong)：流體輸(shu)(shu)送用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)、長輸(shu)(shu)管(guan)(guan)道用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，石油裂(lie)化(hua)用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，化(hua)肥(fei)用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，鍋(guo)爐(lu)用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，換熱器用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)等結構(gou)用(yong)(yong)(yong)(yong)(yong)：普通結構(gou)用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，高(gao)強結構(gou)用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，機械(xie)結構(gou)用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)等特殊用(yong)(yong)(yong)(yong)(yong)：鉆井用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，高(gao)壓氣體容器用(yong)(yong)(yong)(yong)(yong)管(guan)(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≤公稱(cheng)直徑50mm和主管公稱(cheng)直徑的1/4，且(qie)設計(ji)壓力小于或等于10MPa時，在接頭端(duan)部處最小厚(hou)度≥表(biao)3.4.4的厚(hou)度t，并(bing)符合(he)圖3.4.9的形式時，可免做(zuo)補(bu)強計(ji)算。2.選用對焊(han)支管臺、螺紋支管臺及承(cheng)插(cha)焊(han)支管臺（見圖3.4.10），應按(an)設計(ji)壓力-溫度參(can)數條(tiao)件整(zheng)體補(bu)強...

焊接支管補強板的計算安裝與工程應用

1.焊(han)接(jie)支管(guan)的(de)(de)補強(qiang)計(ji)算(suan)（如圖3.4.12所示），應符合(he)下列(lie)要求。2.支管(guan)軸(zhou)(zhou)線(xian)與主(zhu)(zhu)(zhu)管(guan)軸(zhou)(zhou)線(xian)斜(xie)交的(de)(de)結構(gou)型(xing)式，圖中支管(guan)軸(zhou)(zhou)線(xian)與主(zhu)(zhu)(zhu)管(guan)軸(zhou)(zhou)線(xian)的(de)(de)夾角β應介于(yu)45°～90°。主(zhu)(zhu)(zhu)管(guan)為焊(han)接(jie)管(guan)時，焊(han)縫應位(wei)于(yu)主(zhu)(zhu)(zhu)管(guan)的(de)(de)斜(xie)下方。3.開孔補強(qiang)面(mian)(mian)積的(de)(de)計(ji)算(suan)方法： ①.主(zhu)(zhu)(zhu)管(guan)開孔需(xu)補強(qiang)的(de)(de)面(mian)(mian)積A41，應按...

支管直接焊接到主管不需要進行補強的情況有哪些

符合下列(lie)情況之一者，不需(xu)要進行(xing)補強(qiang)計算(suan)，也不需(xu)要采取其他補強(qiang)措(cuo)施；（1）直(zhi)接焊于(yu)主管上的(de)螺紋及承插焊半(ban)管箍（半(ban)管接頭），應(ying)符合下列(lie)各項要求： ①.支(zhi)管的(de)公稱直(zhi)徑不應(ying)大于(yu)DN50； ②.支(zhi)管的(de)外(wai)徑，與主管的(de)外(wai)徑之比小于(yu)或等于(yu)1/...

支管連接形式的選用與強度計算工程應用

1.某工(gong)程施工(gong)時，由于某管(guan)(guan)(guan)(guan)道的(de)(de)三通(tong)未采購到，業主(zhu)發聯絡單(dan)讓管(guan)(guan)(guan)(guan)道設計人員判斷(duan)在主(zhu)管(guan)(guan)(guan)(guan)直接(jie)開孔焊(han)接(jie)支管(guan)(guan)(guan)(guan)是否(fou)可(ke)行。2.支管(guan)(guan)(guan)(guan)連(lian)接(jie)形式的(de)(de)選用支管(guan)(guan)(guan)(guan)直接(jie)焊(han)接(jie)在主(zhu)管(guan)(guan)(guan)(guan)上的(de)(de)支管(guan)(guan)(guan)(guan)連(lian)接(jie)，除下列情況外，應進行開孔補強校核(he)，并根據(ju)校核(he)結果(guo)采取相(xiang)應的(de)(de)補強措(cuo)施；支管(guan)(guan)(guan)(guan)通(tong)過加強度接(jie)頭與主(zhu)管(guan)(guan)(guan)(guan)連(lian)接(jie)；支管(guan)(guan)(guan)(guan)...

法蘭強度的計算與工程應用

1.特殊要求的非標準法(fa)蘭(lan)(lan)可(ke)按GB/T150《壓力(li)(li)容器(qi)》進行設計。 2.當(dang)法(fa)蘭(lan)(lan)除承受內壓外(wai)，還承受較大附加外(wai)荷(he)載(zai)(zai)（如重力(li)(li)荷(he)載(zai)(zai)、位移(yi)荷(he)載(zai)(zai)等）時，可(ke)采用法(fa)蘭(lan)(lan)的當(dang)量壓力(li)(li)校核(he)法(fa)蘭(lan)(lan)的承載(zai)(zai)能力(li)(li)，法(fa)蘭(lan)(lan)的當(dang)量壓力(li)(li)不宜大于法(fa)蘭(lan)(lan)的許用工作壓力(li)(li)。法(fa)蘭(lan)(lan)的當(dang)量壓力(li)(li)按下列公(gong)式(shi)確(que)定：...

盲板厚度計算與工程應用

（1）夾在兩法蘭(lan)之間的盲板如圖3.4.6所示，其(qi)計(ji)算(suan)厚(hou)度(du)可按式(shi)（3.4.22）確定。用(yong)整(zheng)體鋼板制(zhi)造時，式(shi)中焊接(jie)接(jie)頭系(xi)數E等(deng)于1。對(dui)(dui)于永久性盲板應按式(shi)（3.4.23）增加(jia)厚(hou)度(du)附加(jia)量(liang)。（2）GB／T20801對(dui)(dui)盲板厚(hou)度(du)計(ji)算(suan)要求(qiu)如下。（3）某試壓用(yong)盲板最小厚(hou)度(du)計(ji)算(suan)工程應用(yong)某工程計(ji)算(suan)試...

平蓋厚度及強度計算方法

1.無拼(pin)接焊縫平(ping)蓋厚度應(ying)按式(shi)（3.4.20）及式(shi)（3.4.21）計算。注：①.坡口尺(chi)寸應(ying)符合(he)有關的規定(ding)。②.用(yong)(yong)(yong)于(yu)公(gong)稱(cheng)(cheng)壓(ya)力小(xiao)于(yu)或等(deng)于(yu)2.5MPa和(he)公(gong)稱(cheng)(cheng)直徑(jing)小(xiao)于(yu)或等(deng)于(yu)400mm的管(guan)道(dao)。③.只用(yong)(yong)(yong)于(yu)水壓(ya)試驗，公(gong)稱(cheng)(cheng)直徑(jing)小(xiao)于(yu)或等(deng)于(yu)400mm的管(guan)道(dao)。④.用(yong)(yong)(yong)于(yu)公(gong)稱(cheng)(cheng)壓(ya)力小(xiao)于(yu)2.5MPa和(he)...

非標準不銹鋼異徑管強度計算方法

1.無折(zhe)(zhe)邊(bian)的(de)(de)非標準不(bu)(bu)銹鋼(gang)異(yi)徑管（圖3.4.3）的(de)(de)設(she)計，應(ying)符合下(xia)列要求。 ①.無折(zhe)(zhe)邊(bian)的(de)(de)不(bu)(bu)銹鋼(gang)異(yi)徑管可采用鋼(gang)板卷焊，對偏心異(yi)徑管的(de)(de)焊縫(feng)宜位于如圖3.4.3（b）所示的(de)(de)位置。 ②.無折(zhe)(zhe)邊(bian)不(bu)(bu)銹鋼(gang)異(yi)徑管的(de)(de)設(she)計壓(ya)力(li)，應(ying)符合規范的(de)(de)規定。&n...

不銹鋼三通壁厚及強度計算方法

不(bu)銹(xiu)鋼三(san)(san)通強度的(de)計算(suan)通常采(cai)用原西德(de)鍋爐規范TRD301中的(de)壓(ya)力面積法(fa)計算(suan)公式。這(zhe)種(zhong)(zhong)計算(suan)方法(fa)是在(zai)實(shi)驗基礎上（爆破試驗等(deng)）通過理論分析推導而得，并(bing)經工(gong)程實(shi)踐驗證(zheng)，因此是可靠的(de)。不(bu)銹(xiu)鋼三(san)(san)通產品標準主要選用ASMEB16.9等(deng)標準。ASMEB31.3對各種(zhong)(zhong)不(bu)銹(xiu)鋼三(san)(san)通、焊...

斜接彎管壁厚及強度計算方法

1.斜(xie)接彎(wan)頭（蝦米(mi)彎(wan)、蝦米(mi)腰）是常(chang)見(jian)的(de)一種彎(wan)管型式。計算(suan)方法同ASMEB31.3-致。對蝦半腰的(de)使用(yong)(yong)范圍及結構上(shang)的(de)要求，國內外規定(ding)不(bu)一致。國內通常(chang)要求蝦米(mi)腰使用(yong)(yong)在溫度(du)及壓(ya)力不(bu)太(tai)高的(de)情況(kuang)下。ASMEB31.3規定(ding)斜(xie)接角大(da)于(yu)22.5°時，不(bu)得使用(yong)(yong)于(yu)劇(ju)烈循環(huan)工況(kuang)；斜(xie)接...

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