DLGJ 23-1981 火力发电厂汽水管道设计技术规定(试行).doc

DLGJ 2381DLGJ 2381(81)1331964(SD1DZ/Z10364)DLGJ 2381198177p/2kgf/cm2pg2/kgf/cm2pps2/kgf/cm2pd2/kgf/cm2pd12/kgf/cm2pd22/kgf/cm2p02/kgf/cm2p12/kgf/cm2p22/kgf/cm2plj2/kgf/cm2pdl2/kgf/cm2aaljt()20J/2kgf/mm220tJ/2kgf/mm2tb/2kgf/mm220tb/2kgf/mm2tts/2kgf/mm2tts(0.2%)2 /kgf/mm2t0.2%tD2 /kgf/mm2t10DgmmDwmmDnmmsmmslmmsjsmmA1G/t/hGmax/t/hGmin/t/hQ3/m3/h3/m3/kg03/m3/kg13/m3/kg23/m3/kglj3/m3/kglj3 /kg/m313 /kg/m323 /kg/m3w/m/sm2/()kg/(m2s)wlj/m/smlj2/()kg/(m2s)Lmjjzkdmg/2m/s2gc/(2)Kgm/(kgfs2)kacH1mH2mPjgxPjgyPjgzkgfXYZPgzkgfPazkgfPmaxkgfPykgfPmckgfPqlkgfpa2/kgfcm2p22/kgfcm2Et2/kgfcm2I4cm4W3cm3lommmaxmmHazmmHgzmmHzlmm1mm2mmhmmhummfmmfn/YtmmK/mm/kgfw2/m/sJ/Kgf·m/kcalq/kgf/mLmlmLmaxmcio/kcal/kgF22cm2DdmmNkgfcmzmmmaxmmmaxmm50%jmmjmmUmnnbNzkgfNnyhkgfNtxkgfNnyhkgfNtxkgfNjkgfMm kgfDpmmlmmK/kgf/mmLbmm1.11.171ata*/5551.2kW30kW*kgf/cm ()PaMPa1MPa=10.2kgf/cm1.21.33%1.2.1.153.4.5.6.1.17.8.9.10.11.10ata20ata2.3.4.5.6.7.8.5020jpg p p = pg2*)ó tjó 200(kgf/cm(1-1)jó 2002002)(kgf/mmjó t2*)(kgf/mm*PaMPa 1kgf/cm2=9.807104Pa=0.09807MPa*N/mm21kgf/m2m=10N/mm2)140kgf/cm2Dg1.4p54140540pjó 20180çó s (s c)Dù (s c)p = 1.25 pjsó tpps(kgf/cm )p(kgf/cm )jó 2020(kgf/mm )jó t(kgf/mm )ó s 20(kgf/mm )s(mm)c(mm)ç 2-2Dù (mm)1.252kgf/cm1.51001-11-1()()A3FA3A3g0200-203002503501020-20440-2045045045016Mn15MnV-40450-2045047550015CrMo12Cr1MoV12MoVWBSiRe(8)12Cr2MoWVB(102)12Cr3MoVSiTiB(11)5105405555405555405555405555405705806006002016Mn15MnV1.6450jó tó b ; ó b ; ó só s(0.2%) ; ó Dó b 20331.51.51.5)(kgf/mmótb)(kgf/mmótskgf/mm )(óts (0.2%)0.2%)(kg)f/mm (ót10hD)(kgf/mm10h1.2óóóttbbsót tós (0.2%) D80%90%0.970%1.7(SDJ51* 82)(2.1DGõn = 594.5ù (2-1)Q Dn = 18.8 ùDn(mm)G(t/h)(2-2)õ/kg)(mù(m/s)Q(m /h)()2.22-12-1(m/s)5070305030503050609035230.52130.51230.51.52312.3G = 0.6Gmax + 0.4Gmin(2-3)G(t/h)Gmax (t/h)Gmin (t/h)2.4 Dw 1.7Dns1 =pDwj200ó t ç + p(2-4)s1 =pDnj200ó t ç p(2-5)s1(mm);p)(kgf/cmDW(mm)Dn(mm)ó tj t)(kgf/mmç =ç =0.62-22-21.000.900.751.000.850.802.5sjs = s1 + c1 + c2(2-6)Sjs(mm)c1(mm)c2(mm)3-12.6c1 = A1s1(2-7)A12-32-3A10-5-8-9-10-11-12.5-15(%)A10.0500.1050.1410.1540.1670.1800.2000.2351.2.5.5mmc1=0.5mm67mmc1=0.6mm825mmc1=0.8mm2.7c2c2=00.5m0.05mm/ac23.13.216kgf/cm2003.3pg40300pg25300140kgf/cm5403.4pg64()-13-13-1RDgpg200pg100Dw(mm)R(mm)Dw(mm)R(mm)10161001410015181002028150251002532150324220038150404820045200456030050763005730065894007330080108600894001001336001086001251686501336001501947501596501752191000194750200245130021910002252731370245130025032513702731370300377150032513703504261700377150037548019002400400426170045048019002400500530210024006006302400pg64pg100R=2Dwp55.539.155p.529.455p.527.6RD=w1.5pg100g6p4g4p0R=1.5Dgpg25R=Dg+50pg16Dg +50mm()3.5pg25pg403.61.p55.5170 p54170 p55.5 p541402.p54100p2384p2430p26.52803.p55.539.1p55.529.4p5427.64.pg100pg645.pg406.3.7pg40pg253.83.93.10(1)16kgf/cm(2)10kgf/cm()7kgf/cm3001.2.3.5000kgf* N()1N=0.102kgf4.pg10Dg600 pg16Dg450 pg25Dg350 pg40Dg250 pg64 Dg 200 pg100 Dg 150pg200Dg1003-23-2.(mm)100250300600(mm)202525501.2.3.3.110.05radJ0.13mMaxl(3-1)J Mmaxl)m)4(m )(kgf(cm()1.2.30()90pg25Dg2003.121-13.1315201020A3F1Cr18Ni9Tipg1608F3.143-33-3pg(kgf/cm)()020030035042545051054055525A3FA320254064100 200202512CrMo15CrMoA12Cr1MoV25A5253530CrMoA4064100354030CrMoA35CrMoA25Cr2MoVA20030CrMoA35Cr30CrMoA35CrMoA25Cr2MoVA25Cr2Mo1V20CrMoVTiB20Cr1MolVNiB25A3FA32030354540641002535354530CrMoA35CrMoA200354530CrMoA35CrMoA25Cr2MoVA25Cr2Mo1V20Cr1MoV30Cr2MoV200A3F2035A312CrMo15CrMo15CrMo100100A310101Cr18Ni9TiA4.14.2(1) (2)(3)4.34.44.5200mm150mm4.6()350mm300mm50mm4.7200mm150mm4.8()4-54-750mm4.9()2000mm4-1(4-1)2000mmh4550 556065 h(mm)180017001600 15001400750mm4.10()2500mm4.11(0.0005)4500.0024500.0040.0020.0030.0030.0050.0010.0024.12100mm4-24.134-3l1dl) (4.14100150mm200mm4-2)(150mm100mm4-34.15()400mm50 mm4.16Dg150200mmDg150100mm4.174.18150mm4-44.19()1300mm(4-4)4.20()()300mm(4-4)150mm304m4.215003644.224504500mm51005500mmDg3508Dg3504.23()20610(3 )()4.244.254.26SDGJ678SDGJ690Dg ( L U )2Dg(mm)L(m) 20.8(4-1) (cm)U(m)4.27n z max(4-2)n z(mm) max50%N z = N nyh ± N tx(4-3)NZ (kgf) Nnyh(kgf) Ntx(kgf)+-N nyh = N nyh ×pp(4-4)N tx = N tx × z max(4-5)Nnyh(kgf)Ntx(kgf)p(kgf/cm )p(kgf/cm ) z(mm)”max(mm)”max =max/2 ()4.284-(15%)35kgf/mmn 0.85 z max(4-6)4.29(4-5)j = nb lmax3DP(4-7)N j =3KD2pb2n l 2j(4-8)3KD2M =p × 103b4n lj(4-9)j(mm)Nj(kgf)Mm)nb(kgfDp(mm)l(mm)max j b = max max2n(mm)2 N KK =tx max= Rn b(kgfR/mm),4.304-)(4-6j = 2nb (Lb l )maxâDP(4-10)N j =KâD2p4nb Lb ( Lb l)j(4-11)pâKD2M =8nb ( Lb l)j × 103(4-12)4-7Lb(mm)nbLb2l 4-74.31n (l ) zb j =z nb 3Dp(4-13)2n ( L l z ) z bb j =2 âDpnb (4-14)z (mm) (4-)(4-8)(4-9)(4-11)(4-12)4.3250%4.33380(0.7420)0.54.34()2/314.35()5.15.210%5.32ë =1D 1.24 + 2lg n kd dk(m)() d=0.21-30mk d=0.31-30mk(5-1)5.4()kd=(0.550.65)1-30mî = ëL + ÓîDzjn(5-2)zDn(m)L()(m)Óî j5.5G1 =î z2G2G1G2(t/h)î z1 î z25.6î z1 (5-3) Dn1 42 G2 î z1 = î z2 Dn2 G1 (5-4)5.71.640%5.8D2ù = 0.354 Gõn(5-5)D2m = 0.354 Gn(5-6)ù(m/s)mkg/(ms)G(t/h)õ(m3/kg)5.92p =ùcd2 g õ × 104(5-7)pd =m2õ42 gc × 10pd(kgf/cm )gc 9.81kgm/(kgfs )5.10(5-8)p = p p î 1( Hc H ) g21d zõ × 10421 g(5-9)p22)p12)(kgf/cm(kgf/cmH1-H1(m)g5.112)9.81(m/spppd1pd12 = 1 1 2p21î z (1 + 2.5)p1(5-10)pd1z pd1 îp1< 0.03 0.04p2 = p1 pd1î z(5-8)(kgf/)cm(5-7)(5-11)â = a na(a 2 1) pd1p1(5-12)â = õ 2õ 1n = k 1nka = p1p2k1.35-1 kk5-11X=12X=0.9pd1 < 0.011.2=p15.12()()c = pdn < 0.05paa1c0.03a = mb < 1ma2pa pda padb =( p + p ) padadb(5-13)pdbb(kgf/cm )pdaa(kgf/cm )paa(kgf/cm )apb = ps + pda pdb îpd(5-14)pbb(kgf/cm )pd(kgf/cm )õ b = 2 gcpdbm2 b× 104(5-15)õ b b(m /kg)mbbkg/(ms)5.131.640%5.14()(p1õ1)(m)(p)(plj)p = mAp õpljlj2)(kgf/cmkgc× 1040 0(5-16)p0õ0/kg)cA =2 gk2)× 104(kgf/cm(mAk + 1:=1.3A=33k3k=1.081.135A=3203231k 1 õppm2õ 0õ 0 = 1 +2 gk×41× 10 c (5-17)m 2õ 1 0p0õ 0 p1õ12 g c× 10 4(1)plj p(2)plj pp1õ1)( m)(z) ( p1k 1 11 k+ 2 pd1 2k = î +â 2 zlnâk + 1(5-18)k=1.3 p1 + 0.115 1 1 = î+ 4.07lgâ 2 pd1 â 2 z(5-18)2 2kâ lj = î z + 1 + 2lnâ ljk + 1â lj 3-2k=1.3(5-19)lj z ljâ 2 = 1.13î + 1 + 4.6lgâ(5-9)(1)lj (2)=lj (3)lj5.15p = p1 k 1 1 p2âkâ â dlp2 (kgf/cm )k=1.3(5-20)p = p1 0.23 â 1 p2ââ dl(5-20)4m =( p1 p2 )(1 + â ) gc × 10 (î z + ó )âõ1(5-21)mkg/(ms)ó = k 1 â 1 + k + 1 lnâk=1.3â2k k(5-22)ó = 0. â 1 + 4.07lgââ115(5-22)k 1 a 2 â = a 1 k + 1alj 4(k 1) lj â = a 1 a 2 (k + 1)3 â (5-23)ljk=1.32 â = a 1 0.1 a â lj (5-24)õ 2 + 2 gk× p2õ 2(5-21m)× 1042c k 1m22 gkc k 1× p0õ 0 × 104 = 0m2(5-25)k=1.32õ 2 + 85.02 × 104p2 õm22 85.02 × 104 p0 = 0m2(5-25)5.16õ2/õ1=m(5-21)õ b = âõ a(5-26)õbbõaa3/kg)(m3/kg)(ma 2 câ 2 +kk 1(â 1 k 1) = ck=1.3a 2 câ 2 + 4.333(â 0.3 1) = cc(5-27)a2c3-1pb = â1.3 pa(5-28)2pdb = a