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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)的公稱壓(ya)(ya)(ya)(ya)力(li)(li)劃分時(shi)，習慣上將真空(kong)管(guan)(guan)(guan)(guan)(guan)道(dao)與低壓(ya)(ya)(ya)(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)合并。凡公稱壓(ya)(ya)(ya)(ya)力(li)(li)小于2.5MPa的管(guan)(guan)(guan)(guan)(guan)道(dao)稱為(wei)(wei)(wei)低壓(ya)(ya)(ya)(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)；公稱壓(ya)(ya)(ya)(ya)力(li)(li)為(wei)(wei)(wei)4～6.4MPa的管(guan)(guan)(guan)(guan)(guan)道(dao)稱為(wei)(wei)(wei)中壓(ya)(ya)(ya)(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)；公稱壓(ya)(ya)(ya)(ya)力(li)(li)為(wei)(wei)(wei)10～100MPa的管(guan)(guan)(guan)(guan)(guan)道(dao)稱為(wei)(wei)(wei)高(gao)壓(ya)(ya)(ya)(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)；公稱壓(ya)(ya)(ya)(ya)力(li)(li)大于100MPa的管(guan)(guan)(guan)(guan)(guan)道(dao)稱為(wei)(wei)(wei)超高(gao)壓(ya)(ya)(ya)(ya)管(guan)(guan)(guan)(guan)(guan)道(dao)。按管(guan)(guan)(guan)(guan)(guan)道(dao)工(gong)作(zuo)...

管子按用途、材質、直管工藝分類

按用(yong)(yong)(yong)途分(fen)類(lei)（表(biao)4.1.1）輸(shu)送用(yong)(yong)(yong)及(ji)傳熱用(yong)(yong)(yong)：流(liu)體輸(shu)送用(yong)(yong)(yong)管(guan)、長輸(shu)管(guan)道用(yong)(yong)(yong)管(guan)，石(shi)油裂化(hua)用(yong)(yong)(yong)管(guan)，化(hua)肥用(yong)(yong)(yong)管(guan)，鍋爐用(yong)(yong)(yong)管(guan)，換熱器用(yong)(yong)(yong)管(guan)等(deng) 結構(gou)用(yong)(yong)(yong)：普通結構(gou)用(yong)(yong)(yong)管(guan)，高強結構(gou)用(yong)(yong)(yong)管(guan)，機械結構(gou)用(yong)(yong)(yong)管(guan)等(deng) 特殊用(yong)(yong)(yong)：鉆井用(yong)(yong)(yong)管(guan)，高壓(ya)氣(qi)體容器用(yong)(yong)(yong)管(guan)等(deng)...

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.半管(guan)(guan)(guan)接(jie)頭≤公稱直徑50mm和主管(guan)(guan)(guan)公稱直徑的1/4，且設計壓力小(xiao)于(yu)或等于(yu)10MPa時(shi)，在接(jie)頭端部處最小(xiao)厚(hou)度(du)≥表3.4.4的厚(hou)度(du)t，并(bing)符合(he)圖3.4.9的形式時(shi)，可免做補強(qiang)計算。2.選(xuan)用對焊(han)(han)支(zhi)管(guan)(guan)(guan)臺(tai)(tai)、螺(luo)紋支(zhi)管(guan)(guan)(guan)臺(tai)(tai)及承插焊(han)(han)支(zhi)管(guan)(guan)(guan)臺(tai)(tai)（見圖3.4.10），應按(an)設計壓力-溫度(du)參數條件整體補強(qiang)...

焊接支管補強板的計算安裝與工程應用

1.焊(han)接(jie)支(zhi)管(guan)(guan)的(de)補(bu)強(qiang)(qiang)計算(suan)（如圖(tu)3.4.12所示），應(ying)符合下(xia)(xia)列要求。2.支(zhi)管(guan)(guan)軸線(xian)與主管(guan)(guan)軸線(xian)斜(xie)(xie)交的(de)結構型(xing)式，圖(tu)中支(zhi)管(guan)(guan)軸線(xian)與主管(guan)(guan)軸線(xian)的(de)夾角β應(ying)介于45°～90°。主管(guan)(guan)為焊(han)接(jie)管(guan)(guan)時，焊(han)縫應(ying)位于主管(guan)(guan)的(de)斜(xie)(xie)下(xia)(xia)方(fang)。3.開孔補(bu)強(qiang)(qiang)面(mian)積(ji)(ji)的(de)計算(suan)方(fang)法(fa)： ①.主管(guan)(guan)開孔需補(bu)強(qiang)(qiang)的(de)面(mian)積(ji)(ji)A41，應(ying)按...

支管直接焊接到主管不需要進行補強的情況有哪些

符(fu)合(he)下列情況之一者，不需要進行補強計算，也不需要采取其(qi)他補強措(cuo)施；（1）直(zhi)接(jie)焊(han)于(yu)(yu)主管(guan)(guan)(guan)上的螺紋及承插焊(han)半管(guan)(guan)(guan)箍(gu)（半管(guan)(guan)(guan)接(jie)頭），應符(fu)合(he)下列各項要求： ①.支管(guan)(guan)(guan)的公稱直(zhi)徑不應大(da)于(yu)(yu)DN50； ②.支管(guan)(guan)(guan)的外(wai)(wai)徑，與主管(guan)(guan)(guan)的外(wai)(wai)徑之比小于(yu)(yu)或等于(yu)(yu)1/...

支管連接形式的選用與強度計算工程應用

1.某工程(cheng)施工時，由(you)于某管(guan)(guan)道(dao)的三通未(wei)采購到，業主(zhu)(zhu)發聯絡單(dan)讓(rang)管(guan)(guan)道(dao)設計人員判斷(duan)在主(zhu)(zhu)管(guan)(guan)直(zhi)接(jie)開孔焊(han)接(jie)支(zhi)(zhi)管(guan)(guan)是否可行。2.支(zhi)(zhi)管(guan)(guan)連接(jie)形式的選用支(zhi)(zhi)管(guan)(guan)直(zhi)接(jie)焊(han)接(jie)在主(zhu)(zhu)管(guan)(guan)上的支(zhi)(zhi)管(guan)(guan)連接(jie)，除下列(lie)情況(kuang)外，應(ying)進行開孔補(bu)強校核，并根據校核結果采取相應(ying)的補(bu)強措施；支(zhi)(zhi)管(guan)(guan)通過加強度接(jie)頭(tou)與(yu)主(zhu)(zhu)管(guan)(guan)連接(jie)；支(zhi)(zhi)管(guan)(guan)...

法蘭強度的計算與工程應用

1.特殊要(yao)求的(de)(de)非標準法蘭(lan)可按GB/T150《壓(ya)力(li)(li)容器》進行設計。 2.當(dang)(dang)法蘭(lan)除(chu)承(cheng)受(shou)內壓(ya)外(wai)(wai)，還(huan)承(cheng)受(shou)較大(da)附加外(wai)(wai)荷載(zai)（如重力(li)(li)荷載(zai)、位移荷載(zai)等）時，可采用(yong)法蘭(lan)的(de)(de)當(dang)(dang)量(liang)(liang)(liang)壓(ya)力(li)(li)校核法蘭(lan)的(de)(de)承(cheng)載(zai)能力(li)(li)，法蘭(lan)的(de)(de)當(dang)(dang)量(liang)(liang)(liang)壓(ya)力(li)(li)不宜(yi)大(da)于法蘭(lan)的(de)(de)許用(yong)工作壓(ya)力(li)(li)。法蘭(lan)的(de)(de)當(dang)(dang)量(liang)(liang)(liang)壓(ya)力(li)(li)按下列公(gong)式確定(ding)：...

盲板厚度計算與工程應用

（1）夾在兩法蘭之間的盲(mang)板如(ru)圖3.4.6所(suo)示，其計算厚度(du)可按式(shi)（3.4.22）確定。用(yong)整(zheng)體鋼板制(zhi)造時，式(shi)中焊接接頭(tou)系數E等于1。對于永久性盲(mang)板應(ying)按式(shi)（3.4.23）增加(jia)厚度(du)附加(jia)量。（2）GB／T20801對盲(mang)板厚度(du)計算要求如(ru)下。（3）某試壓(ya)用(yong)盲(mang)板最(zui)小厚度(du)計算工(gong)程應(ying)用(yong)某工(gong)程計算試...

平蓋厚度及強度計算方法

1.無拼接焊(han)縫(feng)平蓋厚(hou)度應(ying)按式（3.4.20）及式（3.4.21）計算。注：①.坡口尺(chi)寸應(ying)符合(he)有關的(de)規定。②.用于(yu)(yu)公稱(cheng)壓(ya)力小(xiao)(xiao)(xiao)于(yu)(yu)或(huo)等(deng)于(yu)(yu)2.5MPa和公稱(cheng)直徑(jing)小(xiao)(xiao)(xiao)于(yu)(yu)或(huo)等(deng)于(yu)(yu)400mm的(de)管(guan)道。③.只用于(yu)(yu)水壓(ya)試驗，公稱(cheng)直徑(jing)小(xiao)(xiao)(xiao)于(yu)(yu)或(huo)等(deng)于(yu)(yu)400mm的(de)管(guan)道。④.用于(yu)(yu)公稱(cheng)壓(ya)力小(xiao)(xiao)(xiao)于(yu)(yu)2.5MPa和...

非標準不銹鋼異徑管強度計算方法

1.無(wu)折(zhe)邊的(de)非標準不銹鋼(gang)異徑(jing)管(guan)（圖3.4.3）的(de)設(she)計，應符(fu)合下(xia)列要求。 ①.無(wu)折(zhe)邊的(de)不銹鋼(gang)異徑(jing)管(guan)可采用鋼(gang)板卷焊，對偏心異徑(jing)管(guan)的(de)焊縫宜位(wei)于如圖3.4.3（b）所示的(de)位(wei)置(zhi)。 ②.無(wu)折(zhe)邊不銹鋼(gang)異徑(jing)管(guan)的(de)設(she)計壓(ya)力，應符(fu)合規(gui)(gui)范的(de)規(gui)(gui)定(ding)。&n...

不銹鋼三通壁厚及強度計算方法

不銹(xiu)鋼(gang)三通(tong)(tong)強度(du)的(de)計(ji)算(suan)通(tong)(tong)常采(cai)用原西德鍋(guo)爐規(gui)范TRD301中的(de)壓力面積(ji)法(fa)計(ji)算(suan)公式(shi)。這種計(ji)算(suan)方法(fa)是(shi)在實(shi)驗(yan)基礎上(shang)（爆破試驗(yan)等）通(tong)(tong)過理論(lun)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(kao)的(de)。不銹(xiu)鋼(gang)三通(tong)(tong)產品(pin)標準(zhun)(zhun)主(zhu)要選用ASMEB16.9等標準(zhun)(zhun)。ASMEB31.3對各種不銹(xiu)鋼(gang)三通(tong)(tong)、焊(han)...

斜接彎管壁厚及強度計算方法

1.斜接彎(wan)頭（蝦米(mi)彎(wan)、蝦米(mi)腰(yao)(yao)）是常(chang)見的一種彎(wan)管型(xing)式。計(ji)算方法同ASMEB31.3-致。對蝦半腰(yao)(yao)的使用(yong)范圍及(ji)結構(gou)上的要(yao)求(qiu)，國內(nei)外規(gui)定(ding)不(bu)(bu)一致。國內(nei)通常(chang)要(yao)求(qiu)蝦米(mi)腰(yao)(yao)使用(yong)在溫度(du)及(ji)壓力不(bu)(bu)太高(gao)的情況(kuang)(kuang)下。ASMEB31.3規(gui)定(ding)斜接角(jiao)大(da)于22.5°時，不(bu)(bu)得使用(yong)于劇烈循環工況(kuang)(kuang)；斜接...

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