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针对现有汽轮机低压缸排汽焓在线计算模型的缺点,提出一种排汽焓在线计算新模型。通过对不同容量汽轮机组的额度工况点和特定机组的不同工况点进行实例计算,结果表明:该计算模型不必对汽轮机回热系统和低压缸湿蒸汽区进行计算,计算模型简单,计算量小;所需测点少,测点积累误差小,计算精度高。
Aiming at the shortcomings of on-line calculation model of the exhaust enthalpy of the existing low-pressure cylinder of steam turbine, a new on-line calculation model for the enthalpy of exhaust gas is proposed. The calculation results of different operating points of steam turbines with different capacities and different working conditions of a particular unit show that the calculation model does not need to calculate the steam turbine heat recovery system and the low-pressure steam turbine wet steam area. The calculation model is simple, Small; the required measurement points less error accumulation point measurement, high accuracy.