DLGJ 23-1981 火力发电厂汽水管道设计技术规定(试行)

DLGJ2381DLGJ2381(81)1331964(SD1DZ/Z10364)DLGJ2381198177p/2kgf/cm2pg/2kgf/cm2pps/2kgf/cm2pd/2kgf/cm2pd1/2kgf/cm2pd2/2kgf/cm2p0/2kgf/cm2p1/2kgf/cm2p2/2kgf/cm2plj/2kgf/cm2pdl/2kgf/cm2a——alj——t()20J/2kgf/mm220tJ/2kgf/mm2tb/2kgf/mm220tb/2kgf/mm2tts/2kgf/mm2tts(0.2%)/2kgf/mm2t0.2%tD/2kgf/mm2t10——DgmmDwmmDnmmsmmslmmsjsmmA1——G/t/hGmax/t/hGmin/t/hQ3/m3/h3/m3/kg03/m3/kg13/m3/kg23/m3/kglj3/m3/kg——lj——/3kg/m31/3kg/m32/3kg/m3w/m/sm/(2)kg/(m2s)wlj/m/smlj/(2)kg/(m2s)Lm——————j——j——z——kdmg/2m/s2gc/(2)Kgm/(kgfs2)k——a——c——H1mH2mPjgxPjgyPjgzkgfXYZPgzkgfPazkgfPmaxkgfPykgfPmckgfPqlkgfpa/2kgfcm2p2/2kgfcm2Et/2kgfcm2I4cm4W3cm3lommmaxmmHazmmHgzmmHzlmm1mm2mmhmmhummfmmfn/YtmmK/mm/kgf——w2/m/sJ/Kgf·m/kcalq/kgf/mLmlmLmaxmcio/kcal/kgF22cm2DdmmNkgfcmzmmmaxmmmaxmm50%jmmjmmUmnnbNzkgfNnyhkgfNtxkgfNnyhkgfNtxkgfNjkgfMkgfmDpmmlmmK/kgf/mmLbmm1.11.2kW30kW171ata*/555*kgf/cm()PaMPa1MPa=10.2kgf/cm1.21.33%1.2.1.153.4.5.6.1.17.8.9.10.11.10ata20ata1.2.3.4.5.6.7.8.5020pg[][][]ppt=gjj200σσ(1-1)[]p(kgf/cm2*)[]σj200200(kgf/mm2)[]σjt(kgf/mm2**)*PaMPa1kgf/cm2=9.807104Pa=0.09807MPa**N/mm21kgf/mm2=10N/mm2)p54140540140kgf/cm2Dg1.4pptspjj=12520.[][]σσ180ησωsscDsc()()−−−psp(kgf/cm)p(kgf/cm)[]σj2020(kgf/mm)[]σjt(kgf/mm)σs20(kgf/mm)s(mm)c(mm)η2-2Dω(mm)1.252kgf/cm1001.51-11-1()()A3FA3A3g0200-203002503501020-20440-2045045045016Mn15MnV-40450-2045047550015CrMo12Cr1MoV12MoVWBSiRe(8)12Cr2MoWVB(102)12Cr3MoVSiTiB(11)5105405555405555405555405555405705806006002016Mn15MnV4501.6[]σjtσσσσσbbss(0.2%)D331.51.5;;.;′′′′15σb20(kgf/mm)σbt(kgf/mm)σst(kgf/mm)σst(0.2%)(0.2%)(kgf/mm)tDσ10h(kgf/mm)10h1.2bσtbσtsσ(0.2%)tsσtDσ0.970%80%90%1.7()(SDJ5182)**2.1DGn=5945.υω(2-1)DQn=188.ω(2-2)Dn(mm)G(t/h)υ(m/kg)ω(m/s)Q(m/h)()2.22-12-1(m/s)5070305030503050609035230.52130.51230.51.52312.3GGG=+0604..maxmin(2-3)G(t/h)Gmax(t/h)Gmin(t/h)2.47.1nwDD[]spDpt1=+wj200ση(2-4)[]spDpt1=−nj200ση(2-5)s1(mm);p(kgf/cm)DW(mm)Dn(mm)[]σjtt(kgf/mm)η=1.02-2η=0.62-21.000.900.751.000.850.802.5ssccjs=++112(2-6)Sjs(mm)c1(mm)c2(mm)3-12.6cAs111=(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=0.8mm0.5m2.7c2c2=00.05mm/ac23.13.216kgf/cm2003.3300pg25300pg40140kgf/cm5403.4pg64()-13-13-1Rpg200pg100DgDw(mm)R(mm)Dw(mm)R(mm)10161001410015——1810020281502510025——321503242200381504048200452004560300——50763005730065894007330080108600894001001336001086001251686501336001501947501596501752191000194750200245130021910002252731370245130025032513702731370300377150032513703504261700377150037548019002400——400——4261700450——48019002400500——53021002400600——6302400pg64pg100R=2Dwp55.539.1p55.529.4p55.527.6R=1.5Dwpg100pg64pg40R=1.5Dgpg25R=Dg+50pg16Dg+50mm()3.5pg25pg403.61.p55.5170p54170p55.5p541402.p54100p2384p2430p26.52803.p55.539.1p55.529.4p5427.64.pg100pg645.pg406.3.7pg40pg253.83.97kgf/cm3003.10(1)16kgf/cm(2)10kgf/cm()1.2.3.5000kgf**N()1N=0.102kgf4.pg10Dg600pg16Dg450pg25Dg350pg40Dg250pg64Dg200pg100Dg150pg200Dg1003-23-2.(mm)100250300600(mm)202525501.2.3.3.110.05radJ0.13Mmaxl(3-1)J(cm)Mmax(kgfm)l(m)4m()1.2.30()90pg25Dg2003.121-13.1315201020A3Fpg1608F1Cr18Ni9Ti3.143-33-3()pg(kgf/cm)020030035042545051054055525A3FA320254064100200202512CrMo15CrMoA12Cr1MoV25A5253530CrMoA4064100354030CrMoA35CrMoA25Cr2MoVA20030CrMoA35Cr30CrMoA35CrMoA25Cr2MoVA25Cr2Mo1V20CrMoVTiB20Cr1MolVNiB25A3FA32030354540641002535354530CrMoA35CrMoA200354530CrMoA35CrMoA25Cr2MoVA25Cr2Mo1V20Cr1MoV30Cr2MoV200A3F2035A312CrMo15CrMo15CrMoA100100A310101Cr18Ni9Ti4.14.2(1)(2)(3)4.34.44.5200mm150mm50mm4.6()350mm300mm4.7200mm150mm4.8()4-54-750mm4.9()2000mm4-1(4-1)2000mmh4550556065h(mm)18001700160015001400750mm4.10()2500mm4.11(0.0005)4500.0024500.0040.0020.0030.0030.0050.0010.0024.12100mm4-24-3l1ld()4.134.14(4-2)100150mm200mm150mm100mm50mm400mm4.15()4-34.16Dg150200mmDg150100mm4.174.18150mm4-44.19()1300mm(4-4)()()300mm(4-4)150mm4.20304m4.21500364500mm51005500mmDg3508Dg35044.224504.23()20610()3()4.244.25SDGJ678SDGJ6904.26()DLUg∆−≤2208.(4-1)Dg(mm)(cm)L(m)U(m)4.27nz≥∆∆max(4-2)n∆z(mm)∆max50%(mm)NNNz=±nyhtx(4-3)NZ(kgf)Nnyh(kgf)Ntx(kgf)+-NNppnyhnyh=′×′(4-4)NNztxtxmax=′×′′∆∆(4-5)N’nyh(kgf)N’tx(kgf)p(kgf/cm)p’(kgf/cm)∆z(mm)”max(mm)”max=max/2()4-4.2835kgf/mm(15%)nz≥085.∆∆max(4-6)4.29(4-5)Pmaxb3Dlnj∆′=∆(4-7)NKDnljp2bj=′322∆(4-8)MKDnl=′×−34103p2bj∆(4-9)j(mm)Nj(kgf)M(kgfm)nbDp(mm)l(mm)’max(mm)′=∆∆maxmaxb2n’j(mm)K(kgf/mm),bmaxtx2RnNK=∆′′=R4.30(4-)4-6Pmaxbbj)(2DlLnβ∆′−=∆(4-10)NKDnLLljp2bbbj4=−′β()∆(4-11)MKDnLl=−′×−βp2bbj8()∆103(4-12)4-7Lb(mm)nbLlb24-74.31∆∆∆∆jbbp3=−−nlnDzz()(4-13)∆∆∆∆jbbbp=−−−22nLlnDzz()β(4-14)z(mm)(4-)(4-8)(4-9)(4-11)(4-12)4.3250%4.33(380420)()0.70.54.34()2/314.35()5.15.210%5.3λ=+112422.lgndDk(5-1)kd(m)()kd=0.210-3mkd=0.310-3m()kd=(0.550.65)10-3m5.4ξλξzDL=+njΣ(5-2)zDn(m)L()(m)Σξj5.5GG12=ξξz2z1(5-3)G1G2(t/h)ξz1ξz25.6ξξz1z2n1n2=DDGG4212(5-4)5.71.640%5.8ωυ=0354.GDn2(5-5)mGD=0354.n2(5-6)ω(m/s)mkg/(ms)G(t/h)υ(m3/kg)5.9pgdc=×ωυ24210(5-7)pmgdc=×24210υ(5-8)pd(kgf/cm)gc9.81kgm/(kgfs)5.10pppHHgg21421110=−−×−dzcξυ()(5-9)p2(kgf/cm2)p1(kgf/cm2)H1-H1(m)g(m/s2)9.815.11pppp2112125=−+d121zd11ppξ(.)(5-10)pd1(5-7)(5-8)(kgf/c