最新壓力管道強(qiáng)度校核計(jì)算表資料

1、精品文檔弓蚩度計(jì)算泊DATA SHEET OF STRENGTH工程名稱(chēng): 工程號(hào): 版 次: 設(shè)計(jì)單位:工程負(fù)責(zé):設(shè)計(jì):校核:審核:精品文檔精品文檔工業(yè)及熱力管道壁厚計(jì)算書(shū)1直管壁厚校核1.1計(jì)算公式：根據(jù)?工業(yè)金屬管道設(shè)計(jì)標(biāo)準(zhǔn)? GB50316-2000 6.2中規(guī)定, 當(dāng)直管計(jì)算厚度ts小于管子外徑Do的1/6時(shí),承受內(nèi)壓直管的計(jì)算 厚度不應(yīng)小于式1計(jì)算的值.設(shè)計(jì)厚度tsd應(yīng)按式2計(jì)算.(1)(2)(3)t PDs 2 b t Ej - PYtsd = ts CC =C1 C2式中ts一直管計(jì)算厚度mm；P設(shè)計(jì)壓力MPa；D.一管子外徑mm；L】一在設(shè)計(jì)溫度下材料的許用應(yīng)力MPa;Ej一

2、焊接接頭系數(shù)；tsd一直管設(shè)計(jì)厚度mm;C 厚度附加量之和mm;C1一厚度減薄附加量mmC2腐蝕或腐蝕附加量mmY一計(jì)算系數(shù)精品文檔精品文檔設(shè)計(jì)壓力P:P=2(rtZ (D-2tY)Y=0.4-0Cr18Ni9式中設(shè)計(jì)溫度為常溫,一般取 50C, 口1根據(jù)?工業(yè)金屬管道設(shè) 計(jì)標(biāo)準(zhǔn)?(GB50316-2000)附錄A金屬管道材料的許用應(yīng)力表 A.0.1 進(jìn)行選取,故 20#為 130MPa, 0Cr18Ni9 為 128.375 MPa.Ej取值是根據(jù)?壓力管道標(biāo)準(zhǔn)-工業(yè)管道第2局部：材料(GBZT20801.2-2006)表 A.3 ,故 20#和 0Cr18Ni9 的取值都為 1.Y根據(jù)?工

3、業(yè)金屬管道設(shè)計(jì)標(biāo)準(zhǔn)?(GB50316-2000)表6.2.1進(jìn)行 選取,故20取口 0Cr18Ni9的取值都為0.4.1.2 常用低壓管道計(jì)算厚度設(shè)計(jì)壓力鋼管外徑管道材質(zhì)許用應(yīng)力(50 C 情況下)焊接接頭系數(shù)計(jì)算系數(shù)計(jì)算厚度P(MPa)Do(mm)(t t(MPa)EjYt s(mm)1.65720#13010.40.351.68920#13010.40.551.610820#13010.40.661.615920#13010.40.97精品文檔精品文檔1.3 常用高壓管道計(jì)算厚度設(shè)計(jì)壓力鋼管外徑管道材質(zhì)許用應(yīng)力50 C 情況下焊接接頭系數(shù)計(jì)算系數(shù)計(jì)算厚度P(MPa)Do(mm)4(MPa)

4、EjYt s(mm)27.5100Cr18Ni9128.37510.40.9927.5120Cr18Ni9128.37510.41.1827.5220Cr18Ni9128.37510.42.1727.5250Cr18Ni9128.37510.42.4727.5320Cr18Ni9128.37510.43.161.4 厚度附加量（1） .Ci厚度減薄附加量mm,取鋼管允許厚度負(fù)偏差.根據(jù)?流體輸送用不銹鋼無(wú)縫鋼管?GB/T14976-2002規(guī)定：熱軋擠、擴(kuò)鋼管壁厚 15mm時(shí),普通級(jí)允許厚度負(fù)偏差12.5%顏高級(jí)允許厚度負(fù)偏差12.5%?；熱軋擠、擴(kuò)鋼管壁厚n 15mm時(shí),普通級(jí)允許厚度負(fù)偏差

5、15%顏高級(jí)允許厚度負(fù)偏差12.5%?；冷拔軋鋼管壁厚w 3mm時(shí),普通級(jí)允許厚度負(fù)偏差14%$高級(jí)允許厚度負(fù)偏差10% 5；冷拔軋鋼管壁厚3mm時(shí),普通級(jí)允許厚度負(fù)偏差10%$高級(jí)允許厚度負(fù)偏差10%?.根據(jù)?輸送流體用無(wú)縫鋼管?GB/T8163-2021規(guī)定：熱軋擠壓、擴(kuò)鋼管外徑w 102mm時(shí),允許厚度負(fù)偏差12.5% S或0.40中較大值；熱軋擠壓鋼管外徑102mm時(shí),當(dāng)壁厚和外徑的比值精品文檔精品文檔W 0.05時(shí),允許厚度負(fù)偏差15% S或0.40中較大值0.050.10時(shí),允許厚度負(fù)偏差12.5% S或0.40中較大值0.10時(shí),允許厚度負(fù)偏差10% 5;冷拔軋鋼管壁厚w 3mm

6、時(shí),允許厚度負(fù)偏差10% S或0.15中較 大值；冷拔軋鋼管壁厚3mm時(shí),允許厚度負(fù)偏差10%以.綜上所述,考慮到CNG站用鋼管根本上為冷拔軋鋼管,故厚度負(fù)偏差應(yīng)根據(jù)上面規(guī)定根據(jù)鋼管材質(zhì)選擇.（2） .C2腐蝕附加量mm, 20#鋼管的腐蝕裕量參照?鋼制對(duì)焊管件標(biāo)準(zhǔn)?SY/T0510-1998取1.5mm, 0Cr18Ni9鋼管的腐蝕附加量一 般為0mm.1.5常用管道的設(shè)計(jì)厚度設(shè)計(jì)壓力鋼管外徑鋼管規(guī)格公稱(chēng)壁厚管道材質(zhì)許用應(yīng)力50C情況下焊接接 頭系數(shù)計(jì)算 系數(shù)計(jì)算厚 度厚度負(fù) 偏差腐蝕裕 量設(shè)計(jì)厚 度P(MPa)Do(mm)8 (mm)(rt(MPa)EjYts(mm)C1(mm)C2(mm

7、)t sd(mm)1.65757X4420#13010.40.350.401.502.251.65757X5520#13010.40.350.501.502.351.68989X5520#13010.40.550.501.502.551.6108108X 4.54.520#13010.40.660.451.502.611.6108108X5520#13010.40.660.501.502.661.6159159X5520#13010.40.970.501.502.971.6159159X6620#13010.40.970.601.503.0727.51010X220Cr18Ni9128.375

8、10.40.990.280.001.2727.51212X220Cr18Ni9128.37510.41.180.280.001.4627.52222X 3.53.50Cr18Ni9128.37510.42.170.350.002.5227.52222X440Cr18Ni9128.37510.42.170.400.002.5727.52525X440Cr18Ni9128.37510.42.470.400.002.8727.53232X550Cr18Ni9128.37510.43.160.500.003.66鋼管的公稱(chēng)壁厚大于設(shè)計(jì)壁厚,故所選鋼管的壁厚符合要求精品文檔精品文檔2彎管壁厚校核2.1計(jì)

9、算公式根據(jù)?壓力管道標(biāo)準(zhǔn) -工業(yè)管道 第3局部：設(shè)計(jì)和計(jì)算(GB/T20801.3-2006) 6.2 規(guī)定:內(nèi)壓彎管的計(jì)算厚度位于切2處,最危險(xiǎn)處應(yīng)按式4計(jì)算:+PDow(4)當(dāng)計(jì)算彎管的內(nèi)側(cè)厚度時(shí):4 R Do -1I4 R Do -2當(dāng)計(jì)算彎管的外側(cè)厚度時(shí):,4 R Do 1 I4 R Do 2(5)(6)式中tw一彎管內(nèi)、外側(cè)的計(jì)算厚度mm;a一彎管的轉(zhuǎn)角度；I 一計(jì)算系數(shù)；R一彎管在管子中央線處的彎曲半徑mm;2.2彎曲半徑根據(jù)?工業(yè)金屬管道工程施工及驗(yàn)收標(biāo)準(zhǔn)?GB50235-97中規(guī)定：高壓鋼管的彎曲半徑大于管子外徑的 5倍,其他管子的彎曲半徑宜大于管子外徑的3.5倍.對(duì)于一些在工

10、廠內(nèi)加工的彎管,最小可以精品文檔精品文檔使R=1.5Do,而在一般情況下 RA3Do,故在計(jì)算中選用 R=1.5Do和R=3Do兩種情況,由于只要這兩種情況下的設(shè)計(jì)壁厚可以符合要求, 其他情況下的設(shè)計(jì)壁厚就都是符合要求的.精品文檔精品文檔2.3常用彎管的設(shè)計(jì)厚度設(shè)計(jì)壓 力鋼管外 徑鋼管規(guī)格公稱(chēng) 壁厚管道材質(zhì)訐用艮力50 C情況下焊接接 頭系數(shù)計(jì)算系數(shù)R=1.5Do 內(nèi) 側(cè)計(jì)算系數(shù)R=1.5Do 外 側(cè)計(jì)算系數(shù)R=3Do 內(nèi)側(cè)計(jì)算系數(shù)R=3Do 外側(cè)計(jì)算 系數(shù)計(jì)算厚度R=1.5Do 內(nèi) 側(cè)計(jì)算厚度R=1.5Do 外 側(cè)計(jì)算厚度R=3Do 內(nèi) 側(cè)計(jì)算厚度R=3Do 外側(cè)厚度負(fù) 偏差腐蝕裕 量設(shè)計(jì)厚

11、度R=1.5Do 內(nèi) 側(cè)設(shè)計(jì)厚度R=1.5Do 外 側(cè)設(shè)計(jì)厚度R=3Do 內(nèi) 側(cè)設(shè)計(jì)厚度R=3Do 外 側(cè)P(MPa)D0(mm )8 (mma t(MPa)EjIIIIYt s(mm)t s(mm)t s(mm)t s(mm)C1(mm)C2(mm)t sd (mm)t sd(mm)t sd(mm)t sd(mm)1.65757X4420#13011.250.8751.10.928571430.40.440.310.380.320.401.502.342.212.282.221.65757X5520#13011.250.8751.10.928571430.40.440.310.380.320

12、.501.502.442.312.382.321.68989X5520#13011.250.8751.10.928571430.40.680.480.600.510.501.502.682.482.602.511.6108108X4.54.520#13011.250.8751.10.928571430.40.830.580.730.610.451.502.782.532.682.561.6108108X5520#13011.250.8751.10.928571430.40.830.580.730.610.501.502.832.582.732.611.6159159X5520#13011.25

13、0.8751.10.928571430.41.220.851.070.900.501.503.222.853.072.901.6159159X6620#13011.250.8751.10.928571430.41.220.851.070.900.601.503.322.953.173.0027.51010X220Cr18Ni9128.37511.250.8751.10.928571430.41.210.871.080.920.280.001.491.151.361.2027.51212X220Cr18Ni9128.37511.250.8751.10.928571430.41.451.051.291.110.280.001.731.331.571.3927.52222X 3.53.50Cr18Ni9128.37511.250.8751.10.928571430.42.661.922.372.030.350.003.012.272.722.3827.52222X440Cr18Ni9128.37511.250.8751.10.928571430.42.661.922.372.030.400.003.062.322.7