DHFS75-5[1][1]29-450-150吊桿強(qiáng)度計(jì)算

1、DHFS75-5.29-450-150循環(huán)流化床高效潔凈燃燒鍋爐吊桿強(qiáng)度計(jì)算書(shū)編制： 校對(duì)： 審核： 王爽江 蘇 大 學(xué)二一三年六月目 錄一、鍋爐規(guī)范1二、吊桿強(qiáng)度計(jì)算12.1 鍋筒U形吊桿12.1.1 吊桿設(shè)計(jì)參數(shù)12.1.2 吊桿載荷12.1.3 吊桿強(qiáng)度校核22.2 集箱水冷壁吊桿22.2.1 吊桿設(shè)計(jì)參數(shù)22.2.2 吊桿載荷32.2.3 吊桿強(qiáng)度校核32.2.4 各集箱水冷壁吊桿計(jì)算匯總3三、吊桿相關(guān)強(qiáng)度計(jì)算43.1 吊桿吊板43.1.1 吊板設(shè)計(jì)參數(shù)43.1.2 吊板強(qiáng)度校核53.1.3 各吊桿吊板計(jì)算匯總53.2 吊桿端部連接吊耳53.2.1 吊耳設(shè)計(jì)參數(shù)53.2.2 吊耳強(qiáng)度校

2、核63.2.3 各吊桿端部連接吊耳計(jì)算匯總63.3 吊耳焊縫63.3.1 吊耳焊縫設(shè)計(jì)參數(shù)63.3.2 吊耳焊縫強(qiáng)度校核73.3.3 各吊耳焊縫計(jì)算匯總7四、水冷壁吊耳相關(guān)強(qiáng)度計(jì)算74.1 水冷壁吊耳74.1.1 吊耳設(shè)計(jì)參數(shù)74.1.2 吊耳強(qiáng)度校核84.1.3 各水冷壁吊耳計(jì)算匯總84.2 水冷壁吊耳焊縫84.2.1 吊耳焊縫設(shè)計(jì)參數(shù)84.2.2 吊耳焊縫強(qiáng)度校核94.2.3 各水冷壁吊耳焊縫計(jì)算匯總9五、銷(xiāo)栓強(qiáng)度計(jì)算95.1 銷(xiāo)栓設(shè)計(jì)參數(shù)95.2 銷(xiāo)栓強(qiáng)度校核105.3 各銷(xiāo)栓計(jì)算匯總10序號(hào)名 稱(chēng)符號(hào)單位計(jì)算公式或來(lái)源結(jié) 果一、鍋爐規(guī)范及鍋筒、集箱強(qiáng)度計(jì)算1額定工作壓力PeMPa設(shè)計(jì)參

3、數(shù),表壓 5.292最大流量時(shí)鍋筒至鍋爐出口壓力降PzMPa取過(guò)熱器阻力為0.1Pe0.5293液柱靜壓力PszMPa無(wú)04鍋筒工作壓力PgMPaPg=Pe+Pz+Psz5.8195安全閥始啟壓力與額定壓力差PaMPa取為0.04Pe0.21166鍋筒計(jì)算壓力PMPaP=Pg+Pa6.03067鍋筒筒體材料取用20g8鍋筒介質(zhì)飽和溫度tb按P+0.1查汽水性質(zhì)表277.0329集箱工作壓力PgMPa取同鍋筒筒體5.81910安全閥始啟壓力與額定壓力差PaMPaPe>3.82MPa, 取為0.05Pe0.264511集箱計(jì)算壓力PMPaP=Pg+Pa6.083512集箱材料取用20g13集

4、箱工作溫度tj介質(zhì)為飽和蒸汽, 按P+0.1查汽水性質(zhì)表277.597二、吊桿強(qiáng)度計(jì)算2.1 鍋筒U形吊桿2.1.1 吊桿設(shè)計(jì)參數(shù)1吊桿圓鋼公稱(chēng)直徑dbmm結(jié)構(gòu)參數(shù)702吊桿數(shù)量n設(shè)計(jì)選用23材 料設(shè)計(jì)選用20(GB699)4爐頂環(huán)境溫度ta鍋筒無(wú)密封罩殼1005鍋筒介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 鍋筒工作壓力下的介質(zhì)飽和溫度278.856螺紋端吊桿計(jì)算溫度tl取20207吊桿計(jì)算溫度tt=(tf+tl)/2149.4258吊桿設(shè)計(jì)溫度ts取值大于吊桿計(jì)算溫度3009吊桿許用拉應(yīng)力N/mm2按設(shè)計(jì)溫度300, 查附表A2962.1.2 吊桿載荷10鍋筒、鍋內(nèi)及下降管重量t27.011鍋筒內(nèi)部管路

5、重t1.012鍋筒保溫及護(hù)板重t3.013鍋筒及下降管介質(zhì)重t16.014吊桿自重t0.6515永久載荷F1NF1=10009.8(27.0+1.0+3.0+16.0+0.65)46697016荷載統(tǒng)計(jì)修正系數(shù)1對(duì)鍋筒吊桿裝置1.1017荷載分配不均勻系數(shù)2對(duì)鍋筒單U形吊桿1.0018計(jì)算荷載修正系數(shù)=121.1019吊桿總載荷FNF=F151366720每根吊桿計(jì)算載荷FcNFc=F/(2n)128416.752.1.3 吊桿強(qiáng)度校核21線(xiàn)膨脹系數(shù)mm/(mm·)按額定工況介質(zhì)溫度, 查附表A812.60×10-622溫升tt=t-20258.8523吊點(diǎn)至鍋筒對(duì)稱(chēng)中心線(xiàn)

6、的距離l1mm結(jié)構(gòu)設(shè)計(jì)參數(shù)290024吊點(diǎn)在x方向的位移（鍋筒中心線(xiàn)方向）xmmx=l1t9.4625鍋筒軸線(xiàn)至鍋爐膨脹中心的水平距離l2mm取為爐膛中心線(xiàn)至鍋筒軸線(xiàn)的水平距離447026吊點(diǎn)在y方向的位移ymmy=l2t14.5827合位移mm=(x2+y2)0.517.3828螺紋公稱(chēng)直徑dmm結(jié)構(gòu)參數(shù)6829螺距pmm結(jié)構(gòu)參數(shù)430螺紋有效直徑demmde=d-0.9382p64.2531吊桿螺紋端計(jì)算截面積Asmm2As=de2/43241.8932吊桿螺紋端拉應(yīng)力t,s,UN/mm2t,s,U=Fc/As39.6133吊桿螺紋端彎矩Ms,UN·mmMs,U=Fc/21115

7、941.5634吊桿螺紋端截面系數(shù)Wsmm3Ws=de3/3226035.3035吊桿螺紋端彎曲應(yīng)力M,s,UN/mm2M,s,U=Ms,U/Ws42.8636吊桿鍋筒端拉應(yīng)力t,d,UN/mm2t,d,U=4Fc/(db2)33.3837吊桿圓鋼端彎矩Md,UN·mmMd,U=Fc/21115941.5638吊桿圓鋼端截面系數(shù)Wbmm3Wb=db3/3233656.8839吊桿圓鋼端彎曲應(yīng)力M,d,UN/mm2M,d,U=Md,U/Wb33.16結(jié)論U形吊桿螺紋端應(yīng)力滿(mǎn)足t,s,U, 1.67t,s,U+M,s,U1.25, 以及吊桿圓鋼端應(yīng)力滿(mǎn)足t,d,U, 1.67t,d,U+

8、M,d,U1.67, 所以U形吊桿強(qiáng)度合格2.2 集箱水冷壁吊桿2.2.1 吊桿設(shè)計(jì)參數(shù)1吊桿圓鋼公稱(chēng)直徑dbmm結(jié)構(gòu)參數(shù)2吊桿數(shù)量n設(shè)計(jì)選用3材 料設(shè)計(jì)選用4吊桿計(jì)算長(zhǎng)度lhamm結(jié)構(gòu)參數(shù)5爐頂環(huán)境溫度ta集箱密封罩殼外, 取1006集箱介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 該集箱工作溫度278.857計(jì)算溫度附加值t查表6-2, 爐膛上部爐頂時(shí), t取40508吊桿計(jì)算溫度ttf>ta, 故查表6-1, 通過(guò)絕熱管束靠近集箱管束或連接管時(shí), t=tf-100+t9彈性模量EN/mm2查附表A510吊桿許用拉應(yīng)力N/mm2查附表A22.2.2 吊桿載荷11吊桿承重的爐膛水冷壁t12爐內(nèi)絕熱層和

9、門(mén)類(lèi)重量t13集箱水冷壁內(nèi)部管路重t14爐膛保溫及護(hù)板重t15爐膛異型磚重量t16集箱水冷壁介質(zhì)重t17鋼性梁重量以及吊桿自重t18燃燒裝置以及絕熱層重量t19二次風(fēng)管路重量t布置在爐膛左右兩側(cè)墻上20點(diǎn)火燃燒器t布置在爐膛后墻上21永久載荷F1N22偶然載荷F2N23荷載統(tǒng)計(jì)修正系數(shù)1對(duì)普通吊桿裝置24荷載分配不均勻系數(shù)2對(duì)膜式壁管屏集箱25計(jì)算荷載修正系數(shù)=1226吊桿總載荷FNF=F127每根吊桿計(jì)算載荷FcNFc=F/n2.2.3 吊桿強(qiáng)度校核28吊點(diǎn)在x方向的位移xmm29吊點(diǎn)在y方向的位移ymm30合位移mm=(x2+y2)0.531螺紋公稱(chēng)直徑dmm結(jié)構(gòu)參數(shù)32螺距pmm結(jié)構(gòu)參數(shù)

10、33螺紋有效直徑demmde=d-0.9382p34吊桿螺紋端計(jì)算截面積Asmm2As=de2/435吊桿螺紋端拉應(yīng)力t,sN/mm2t,s=Fc/As36吊桿圓鋼端拉應(yīng)力t,bN/mm2t,b=4Fc/(db2)37吊桿圓鋼端彎曲應(yīng)力M,bN/mm2M,b=3dbE/lha238組合應(yīng)力系數(shù)K查表17, 按碳鋼計(jì)算溫度<340, 得K1.67, K取為1.67結(jié)論判斷應(yīng)力是否滿(mǎn)足t,s, t,b, 以及t,b+M,bK2.2.4 各集箱水冷壁吊桿計(jì)算匯總序號(hào)名 稱(chēng)前墻水冷壁前上集箱中上集箱后墻水冷壁后上集箱左側(cè)、右側(cè)上集箱1吊桿圓鋼公稱(chēng)直徑5850505058582吊桿數(shù)量555555

11、3材 料20(GB699)20(GB699)20(GB699)20(GB699)20(GB699)20(GB699)4吊桿計(jì)算長(zhǎng)度6207572757274174572747855爐頂環(huán)境溫度1001001001001001006集箱介質(zhì)溫度278.85278.85278.85278.85278.85278.857計(jì)算溫度附加值5050505050508吊桿計(jì)算溫度228.85228.85228.85228.85228.85228.859彈性模量16600016600016600016600016600016600010吊桿許用拉應(yīng)力11011011011011011011吊桿承重的爐膛水冷壁

12、（含介質(zhì)重）21.1 5.285.28 10.5510.5526.88 12爐內(nèi)絕熱層和門(mén)類(lèi)重量16.40 5.0 02.52.515.0 13集箱內(nèi)部管路重（含介質(zhì)重）1.00.50.50.50.51.014爐膛保溫及護(hù)板重17.0 4.00018.018.015爐膛異型磚重量0016.08.08.0016鋼性梁重量以及吊桿自重1.70.60.60.480.61.717燃燒裝置以及絕熱層重量2.50002.52.518二次風(fēng)管路重量00001.01.019點(diǎn)火燃燒器00002.0020永久載荷58506015072421932421589444737064758421荷載統(tǒng)計(jì)修正系數(shù)1.05

13、1.051.051.051.051.0522荷載分配不均勻系數(shù)1.201.201.201.201.201.2023計(jì)算荷載修正系數(shù)1.261.261.261.261.261.2624吊桿總載荷737175.6189912.2276348.2272026.4563686.2815955.825每根吊桿計(jì)算載荷147435.137982.455269.654405.3112737.2163191.226吊點(diǎn)在x方向的位移44444427吊點(diǎn)在y方向的位移44444428合位移5.665.665.665.665.665.6629螺紋公稱(chēng)直徑56484848565630螺距44444431螺紋有效直徑

14、52.2544.2544.2544.2552.2552.2532吊桿螺紋端計(jì)算截面積2143.101537.081537.081537.082143.102143.1033吊桿螺紋端拉應(yīng)力68.8024.7135.9635.4052.6076.1534吊桿圓鋼端拉應(yīng)力55.8319.3528.1627.7242.6961.8035吊桿圓鋼端彎曲應(yīng)力4.244.304.308.094.987.1436組合應(yīng)力系數(shù)1.671.671.671.671.671.6737t,b+M,b60.0723.6532.4635.8147.6768.9438K183.7183.7183.7183.7183.718

15、3.7結(jié)論以上應(yīng)力滿(mǎn)足t,s, t,b, 以及t,b+M,bK, 所以各集箱水冷壁吊桿強(qiáng)度合格三、吊桿相關(guān)強(qiáng)度計(jì)算3.1 吊桿吊板3.1.1 吊板設(shè)計(jì)參數(shù)1吊板類(lèi)型吊桿上為雙吊板2材 料設(shè)計(jì)選用3吊板寬度bcmm結(jié)構(gòu)參數(shù)4吊板厚度cmm結(jié)構(gòu)參數(shù)5孔徑dhmm結(jié)構(gòu)參數(shù)6銷(xiāo)軸直徑dpmm結(jié)構(gòu)參數(shù)7計(jì)算載荷FcN取對(duì)應(yīng)吊桿的計(jì)算載荷8爐頂環(huán)境溫度ta集箱密封罩殼外, 取1009集箱介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 該集箱工作溫度278.8510吊板計(jì)算溫度ti,e位于保溫層表面, ti,e=(ta+tf)/211吊板許用拉應(yīng)力N/mm2查附表A23.1.2 吊板強(qiáng)度校核12吊板計(jì)算載荷Fc,cN吊板個(gè)數(shù)

16、為2,Fc,c=Fc/214吊板的拉應(yīng)力t,cN/mm2t,c=Fc,c/(c(bc-dh)15銷(xiāo)軸對(duì)孔的支撐應(yīng)力e,hN/mm2e,h=Fc,c/(cdp)結(jié)論判斷吊桿吊板的應(yīng)力是否滿(mǎn)足t,c0.75, 以及e,h1.203.1.3 各吊桿吊板計(jì)算匯總序號(hào)名 稱(chēng)前墻水冷壁前上集箱中上集箱后墻水冷壁后上集箱左側(cè)、右側(cè)上集箱1材 料20(GB711)20(GB711)20(GB711)20(GB711)20(GB711)20(GB711)2吊板寬度1601601601601601603吊板厚度2020202020204孔徑5651515156565銷(xiāo)軸直徑5550505055556計(jì)算載荷147

17、435.137982.4 55269.654405.3112737.2163191.27爐頂環(huán)境溫度1001001001001001008集箱介質(zhì)溫度278.85278.85278.85278.85278.85278.859吊板計(jì)算溫度189.425189.425189.425189.425189.425189.42510吊板許用拉應(yīng)力11011011011011011011吊板計(jì)算載荷73717.5618991.2227634.8227202.6456368.6281595.5812吊板的拉應(yīng)力35.448.7912.7912.5927.1039.2313銷(xiāo)軸對(duì)孔的支撐應(yīng)力67.0218.9

18、927.6327.2051.2474.18140.7582.582.582.582.582.582.5151.20132132132132132132結(jié)論吊桿吊板的應(yīng)力滿(mǎn)足t,c0.75, 以及e,h1.20, 所以各吊桿吊板強(qiáng)度合格3.2 吊桿端部連接吊耳3.2.1 吊耳設(shè)計(jì)參數(shù)1吊耳類(lèi)型集箱上為單個(gè)方角環(huán)向吊耳2材 料設(shè)計(jì)選用3吊耳寬度b1mm結(jié)構(gòu)參數(shù), 取同吊桿吊板寬度4吊耳厚度1mm結(jié)構(gòu)參數(shù)5孔徑dhmm結(jié)構(gòu)參數(shù)6銷(xiāo)軸直徑dpmm結(jié)構(gòu)參數(shù)7計(jì)算載荷FcN取對(duì)應(yīng)吊桿的計(jì)算載荷8介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 該集箱或水冷壁的工作溫度278.859吊耳計(jì)算溫度ti,e根據(jù)6.5.6條確定10

19、吊耳許用拉應(yīng)力N/mm2查附表A23.2.2 吊耳強(qiáng)度校核11吊耳計(jì)算載荷Fc,1NFc,1=Fc12吊耳的理論計(jì)算寬度b1,rmmb1,r=Fc,1/(0.751)+dh13銷(xiāo)軸對(duì)孔的支撐應(yīng)力b,hN/mm2b,h=Fc,1/(1dp)結(jié)論判斷集箱吊耳的寬度是否滿(mǎn)足b1b1,r, 以及應(yīng)力是否滿(mǎn)足b,h1.203.2.3 各吊桿端部連接吊耳計(jì)算匯總序號(hào)名 稱(chēng)前墻水冷壁工字鋼吊耳前上集箱上集箱后墻水冷壁工字鋼吊耳后上集箱左側(cè)、右側(cè)上集箱1材 料20(GB711)20(GB711)20(GB711)20(GB711)20(GB711)20(GB711)2吊耳寬度24016016024016016

20、03吊耳厚度3030303030304孔徑5651515156565銷(xiāo)軸直徑5550505055556計(jì)算載荷147435.137982.455269.654405.3112737.2163191.27介質(zhì)溫度278.85278.85278.85278.85278.85278.858吊耳計(jì)算溫度189.425278.85278.85189.425278.85278.859吊耳許用拉應(yīng)力1109999110999910吊耳計(jì)算載荷147435.137982.455269.654405.3112737.2163191.211吊耳的理論計(jì)算寬度115.5768.0575.8172.98106.611

21、29.2612銷(xiāo)軸對(duì)孔的支撐應(yīng)力89.3525.3236.8536.2768.3398.90131.20132118.8118.8132118.8118.8結(jié)論集箱吊耳的寬度滿(mǎn)足b1b1,r, 以及應(yīng)力滿(mǎn)足b,h1.20, 所以各集箱吊板強(qiáng)度合格3.3 吊耳焊縫3.3.1 吊耳焊縫設(shè)計(jì)參數(shù)1吊耳類(lèi)型方角環(huán)向吊耳2材 料設(shè)計(jì)選用3吊耳寬度b1mm結(jié)構(gòu)參數(shù)4吊耳厚度1mm結(jié)構(gòu)參數(shù)5計(jì)算載荷FcN取對(duì)應(yīng)吊桿的計(jì)算載荷6介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 該集箱或水冷壁的工作溫度278.857吊耳計(jì)算溫度ti根據(jù)6.5.6條確定8吊耳許用拉應(yīng)力N/mm2查附表A23.3.2 吊耳焊縫強(qiáng)度校核9吊耳計(jì)算載荷F

22、c,1NFc,1=Fc10焊縫許用剪切應(yīng)力uN/mm2u=0.611實(shí)際焊縫尺寸Hmm12焊縫實(shí)際剪切應(yīng)力uN/mm2u=Fc,1/(2b1H), 前墻水冷壁連接吊耳為伸入3個(gè)吊板各100mm的焊接形式, b1取為3×100=300mm結(jié)論判斷吊耳焊縫剪切應(yīng)力是否滿(mǎn)足u<u3.3.3 各吊耳焊縫計(jì)算匯總序號(hào)名 稱(chēng)前墻水冷壁連接吊耳前上集箱中上集箱后墻水冷壁工字鋼吊耳后上集箱左側(cè)、右側(cè)上集箱1材 料20(GB711)20(GB711)20(GB711)20(GB711)20(GB711)20(GB711)2吊耳寬度2401601602401601603吊耳厚度3030303030

23、304計(jì)算載荷147435.137982.455269.654405.3112737.2163191.25介質(zhì)溫度278.85278.85278.85278.85278.85278.856吊耳計(jì)算溫度189.425278.85278.85189.425278.85278.857吊耳許用拉應(yīng)力110999911099998吊耳計(jì)算載荷147435.137982.455269.654405.3112737.2163191.29焊縫許用剪切應(yīng)力6659.459.46659.459.410實(shí)際焊縫尺寸8161610161611焊縫實(shí)際剪切應(yīng)力30.727.4210.7911.3322.0231.87結(jié)

24、論吊耳焊縫剪切應(yīng)力滿(mǎn)足u<u, 所以各集箱吊耳焊縫強(qiáng)度合格四、水冷壁吊耳相關(guān)強(qiáng)度計(jì)算4.1 水冷壁吊耳4.1.1 吊耳設(shè)計(jì)參數(shù)1吊耳材料設(shè)計(jì)選用2每根吊桿對(duì)應(yīng)的吊耳數(shù)量n結(jié)構(gòu)參數(shù)3吊耳寬度b1mm結(jié)構(gòu)參數(shù)4吊耳厚度1mm結(jié)構(gòu)參數(shù)5吊耳長(zhǎng)度l1mm結(jié)構(gòu)參數(shù)6水冷壁彎管處半徑Rmm結(jié)構(gòu)參數(shù)7吊耳與水冷壁焊接段長(zhǎng)度lrmm結(jié)構(gòu)參數(shù)8水冷壁彎管徑向受力角度°=180lr/(R)9孔徑dhmm結(jié)構(gòu)參數(shù)10銷(xiāo)軸直徑dpmm結(jié)構(gòu)參數(shù)11介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 該水冷壁的工作溫度278.8512吊耳計(jì)算溫度ti位于保溫層內(nèi) ti=tf13吊耳許用拉應(yīng)力N/mm2查附表A214計(jì)算載荷Fc

25、N取對(duì)應(yīng)吊桿的計(jì)算載荷4.1.2 吊耳強(qiáng)度校核15吊耳計(jì)算載荷Fc,1NFc,1=Fc/n16吊耳徑向載荷FrNFr=Fc,1sin17單位長(zhǎng)度實(shí)際載荷FN/mmF=Fr/lr18單位長(zhǎng)度總許用載荷FN/mm取為100.019吊耳的理論計(jì)算寬度b1,rmmb1,r=Fc,1/(0.751)+dh20銷(xiāo)軸對(duì)孔的支撐應(yīng)力b,hN/mm2b,h=Fc,1/(1dp)結(jié)論判斷吊耳載荷是否滿(mǎn)足FF, 吊耳的寬度是否滿(mǎn)足b1b1,r, 以及應(yīng)力是否滿(mǎn)足b,h1.204.1.3 各水冷壁吊耳計(jì)算匯總序號(hào)名 稱(chēng)前墻水冷壁后墻水冷壁1吊耳材料20(GB711)20(GB711)2每根吊桿對(duì)應(yīng)的吊耳數(shù)量32.43

26、吊耳寬度1601604吊耳厚度16165吊耳長(zhǎng)度6924706水冷壁彎管處半徑5303307吊耳與水冷壁焊接段長(zhǎng)度427.81 357.61 8水冷壁彎管徑向受力角度46.2562.099孔徑565110銷(xiāo)軸直徑555011介質(zhì)溫度278.85278.8512吊耳計(jì)算溫度278.85278.8513吊耳許用拉應(yīng)力999914計(jì)算載荷147435.154405.315吊耳計(jì)算載荷49145.0422668.8716吊耳徑向載荷35499.6720032.1017單位長(zhǎng)度實(shí)際載荷82.9856.0218單位長(zhǎng)度總許用載荷100.0100.019吊耳的理論計(jì)算寬度97.3770.0820銷(xiāo)軸對(duì)孔的支

27、撐應(yīng)力55.8528.34211.20118.8118.8結(jié)論吊耳載荷滿(mǎn)足FF, 吊耳寬度滿(mǎn)足lrlr,r, 以及應(yīng)力滿(mǎn)足b,h1.20, 所以各水冷壁吊耳強(qiáng)度合格4.2 水冷壁吊耳焊縫4.2.1 吊耳焊縫設(shè)計(jì)參數(shù)1吊耳材料設(shè)計(jì)選用2每根吊桿對(duì)應(yīng)的吊耳數(shù)量n結(jié)構(gòu)參數(shù)3吊耳寬度b1mm結(jié)構(gòu)參數(shù)4水冷壁彎管處半徑Rmm結(jié)構(gòu)參數(shù)5吊耳與水冷壁焊接段長(zhǎng)度lrmm結(jié)構(gòu)參數(shù)6計(jì)算載荷FcN取對(duì)應(yīng)吊桿的計(jì)算載荷7爐頂環(huán)境溫度ta集箱密封罩殼外8水冷壁介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 該水冷壁工作溫度278.859計(jì)算溫度附加值t查表6-2, 爐膛上部爐頂, t取405010吊耳計(jì)算溫度ttf>ta, 故查

28、表6-1, 與水冷壁管束接觸, t=tf+t11吊耳許用拉應(yīng)力N/mm2查附表A24.2.2 吊耳焊縫強(qiáng)度校核12吊耳計(jì)算載荷Fc,1NFc,1=Fc/n13焊縫許用剪切應(yīng)力uN/mm2u=0.614實(shí)際焊縫尺寸Hmm取為7.915焊縫實(shí)際剪切應(yīng)力uN/mm2u=Fc,1/(2lrH)結(jié)論判斷吊耳焊縫剪切壓力是否滿(mǎn)足u<u4.2.3 各水冷壁吊耳焊縫計(jì)算匯總序號(hào)名 稱(chēng)前墻水冷壁后墻水冷壁1吊耳材料20(GB711)20(GB711)2每根吊桿對(duì)應(yīng)的吊耳數(shù)量32.43吊耳寬度1601604水冷壁彎管處半徑5303305吊耳與水冷壁焊接段長(zhǎng)度427.81 357.61 6計(jì)算載荷147435

29、.154405.37爐頂環(huán)境溫度1001008水冷壁介質(zhì)溫度278.85278.859計(jì)算溫度附加值505010吊耳計(jì)算溫度328.85328.8511吊耳許用拉應(yīng)力898912吊耳計(jì)算載荷49145.0422668.8713焊縫許用剪切應(yīng)力53.453.414實(shí)際焊縫尺寸8815焊縫實(shí)際剪切應(yīng)力7.183.96結(jié)論吊耳焊縫剪切應(yīng)力滿(mǎn)足u<u, 所以各水冷壁吊耳焊縫強(qiáng)度合格五、銷(xiāo)栓強(qiáng)度計(jì)算5.1 銷(xiāo)栓設(shè)計(jì)參數(shù)1銷(xiāo)栓直徑dpmm結(jié)構(gòu)參數(shù)2銷(xiāo)栓材料設(shè)計(jì)選用3銷(xiāo)栓長(zhǎng)度lpmm結(jié)構(gòu)參數(shù)4所連接吊板厚度cmm結(jié)構(gòu)參數(shù)5雙吊板的間距scmm結(jié)構(gòu)參數(shù)6所連接吊耳厚度1mm結(jié)構(gòu)參數(shù)7計(jì)算載荷FcN取對(duì)應(yīng)

30、吊桿的計(jì)算載荷8爐頂環(huán)境溫度ta集箱密封罩殼外, 取1009介質(zhì)溫度tf取強(qiáng)度計(jì)算數(shù)值, 對(duì)應(yīng)介質(zhì)工作溫度278.8510計(jì)算溫度附加值t查表6-2, 爐膛上部爐頂, t取405011銷(xiāo)栓計(jì)算溫度ttf>ta, 故查表6-1, 不與集箱管束或連接管接觸, t=tf-28+t12銷(xiāo)栓許用拉應(yīng)力N/mm2查附表A25.2 銷(xiāo)栓強(qiáng)度校核13銷(xiāo)栓計(jì)算載荷Fc,1NFc,1=Fc14孔對(duì)銷(xiāo)栓的支撐應(yīng)力b,pN/mm2b,p=Fc,1/(1dp)15銷(xiāo)栓單側(cè)承受荷載時(shí)的切應(yīng)力p'N/mm2p'=4Fc/(dp2)16銷(xiāo)栓單側(cè)承受荷載時(shí)的彎矩Mp,s'N·mmMp,s'=Fc,12(sc+c)-1/817銷(xiāo)栓截面系數(shù)Wpmm2