过热器管壁的冷却条件恶化，短时间 内使过热器或再热器的管壁温度急剧升高而发生超温爆管；并且急剧的赶火升压会使过热蒸汽温度急剧上升， 汽温的调整往往跟不上汽温的变化，容易导致汽温超温并因管壁的冷却变差而爆管。
The cooling conditions of the superheater tube wall deteriorate, and the superheater or reheater tube wall temperature rises sharply in a short time. The superheated steam temperature rises sharply, and the adjustment of the steam temperature often follows the change of the non steam temperature, which can easily cause the steam Wen Chaowen to burst because of the cooling of the tube wall. Tube.
锅炉严重满水，汽温会急剧降低，但为何还要紧急熄火停炉？锅炉熄火后会迅速降压，提高蒸汽的过热度，减轻对汽机的危害； 熄火后炉水快速收缩。短时内 会使汽鼓水位急剧降低，减少蒸汽带水；熄火后因热负荷急剧降低，蒸发量急剧减少，蒸汽的携带能力降 低，蒸汽中的带水将有所减少。
When the boiler is full of water, the steam temperature will drop sharply, but why is it urgent to stop the boiler? After the boiler is extinguished, it will quickly depressurization, improve the superheat of steam, reduce the harm to steam turbine, and quickly reduce the boiler water after quenching. In short time, the water level of the steam drum will be reduced sharply and the water of the steam belt is reduced; after the quenching, the heat load is sharply reduced, the amount of evaporation is reduced sharply, the carrying capacity of steam is reduced, and the water in the steam will be reduced.
急剧的赶火升压为何会造成过热器超温爆管？急剧的赶火升压即锅炉的热负荷剧增，使通过过热器管壁的烟气流量和蒸汽温度均急剧增加，但水冷壁管 产生的蒸汽量迟后于热负荷的增长，过热器内的蒸汽流量不能同步增加。
Why does the rapid fire raising pressure cause superheater overheating bursting? The rapid rise of fire pressure increases the heat load of the boiler, which makes the flow of flue gas and the temperature of steam increase sharply, but the amount of steam produced by the water wall tube is later than the heat load, and the steam flow in the superheater can not be increased synchronously.
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