内螺纹管高压汽水两相流摩擦阻力特性的研究

INVESTIGATION ON THE CHARACTERISTICS OF HIGH PRESSURE STEAM-WATER TWO-PHASE FLOW FRICTION PRESSURE LOSS IN RIFLED TUBES

对内螺纹管两相流摩擦阻力在高压汽水试验台上进行了试验研究，试验用管为我国６００ＭＷ超临界变压运行直流锅炉所采用的Φ２８ｍｍ×５．４１ｍｍ的１２ＣｒＩＭｏＶ四头内螺纹管，试验压力为：１３～２２ＭＰａ，质量流达为：４００～１８００ｋｓ／ｍ２ｓ，蒸汽干度为：０～１．０．对试验结果进行了分析，给出了计算内螺纹管摩擦压降的关联式。

This paper describes an investigation on the characteristics of two-Phasenow frictionpressure loss in a rifled tube.The two-phase flow friction pressure loss in rifled tube is ex-perimentally measured in a high pressure steam-water loop,The test tube dimensions areΦ28mm×5.41mm,which is a four head internally ribbed tube made from l2CrlMoV andused in 600MW supercritical variable-pressure once-through boiler.The parameter rangetested is as follows:pressure from l3 to 22 MPa,mass velocity from 400 to l800 kg/m2s,andquality from 0 to l.0.In the paper,analysis and discussion of the test data are made.Based onthe experimental data,a correlation for the calculation of the frictional pressure drop in rifledtube is presented.