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根据汽液两相流动阻力的计算式 ,推导出了流量敏感系数、出口焓值敏感系数的表达式。对直流锅炉内螺纹管、螺旋管圈水冷壁的热敏感系数进行了定量计算 ,分析了各种因素对热敏感性的影响 ,并对两种水冷壁管屏在热负荷不均时的温度偏差、焓值偏差进行了讨论 ,对直流锅炉安全运行具有一定的指导意义
According to the calculation formula of the flow resistance of vapor-liquid two-phase flow, the expressions of flow rate sensitivity coefficient and outlet enthalpy sensitivity coefficient are deduced. The heat sensitivity coefficients of the helical tube wall and the helical tube wall in the once-through boiler were quantitatively calculated, and the influence of various factors on the thermosensitiveness was analyzed. The temperature deviation of the two kinds of tube wall panels in the case of uneven thermal load , Enthalpy deviation were discussed, the safe operation of the DC boiler has a certain guiding significance