供热管道直埋敷设的计算与设计

:1000-4416(2002)05-0457-02X(,230022):,:;;;:TU995.3:B160,2050,,,[14],2050,207019772080[4,5]:,,22.1:,DN500mm,150Lmax1020(1)Ff:Ff=DLFfFf=9.8h:Ff,N;D,m;L,m;Ff,NPm2;;,kgPm3;h,m(2)Fe:Fe=A=EltA:Fe,N;,MPa;A,mm2;E,MPa;l,K-1;t,754225X:2001-06-14;:2002-04-18:(1973),,,,,(3),FfFe,Lmax:LmaxFeP(DFf)(4),,,:ax=DLFfPA:ax,MPa(5)hmin,,hmin,[6]2.2,[68]:(1),,,0.003,,(),,,,,(2)(),;,,(3),,2.3:,,,30%;,34(1)3,120,-60120,,,,DN25800mm,DN25300mm,120,0.2MPa(2)4,,,,,,[5],(3)()(),,,2535mm,,,,(461)854:200210,,,ApplicationofSelf-operatedDifferentialPressureControllingValveHUANGPu(NorthChinaMunicipalEngineeringDesign&ResearchInstitute,Tianjin300074,China)Abstract:Thepaperintroducedthefuction,workingprinciple,workingcharacteristiccurveofself-operateddifferentialpressurecontrollingvalves,theirinfluenceonsafetyoperationofheatingnetwork,aswellastheproblems,whichshouldbepaidattentiontoduringoperation.Keywords:self-operateddifferentialpressurecontrollingvalve;flowcontrol;hydraulicfailure(458):[1],.[J].,1999,(2):6164.[2].[J].,1986,(2):5761.[3],.[J].,1990,(2):4650.[4],.[J].,1998,(4):5960.[5],,.[J].,2002,(1):8687.[6]CJJ2889,[S].[7].[M].:,1994.[8]CJJPT8198,[S].CalculationandDesignofDirectly-buriedHeatingPipeWANGZi-de(HefeiDesignInstituteofCNTC,Hefei230022,China)Abstract:Thispapersummarizesthedevelopmentofskillofdirectly-buriedheatingpipe,givestheheatingcalculationofundergroundheatingpipeanditsinsulationstructureanddesignmainpoints.Keywords:directly-buriedheatingpipe;heatstress;heatcompensation;heatisolationstructure164225