The invention relates to a fused salt heat accumulating peak regulating
system for a heat-engine
plant heating by means of main steam and belongs to the technical field of heat accumulating peak regulating of heat-engine plants. The
system comprises a main steam regulating valve, a
high pressure steam-fused salt
heat exchanger, a reheated steam regulating valve, a high temperature fused salt tank,a
high pressure fused salt pump, a low temperature fused salt tank, a low temperature fused salt pump, a throttling valve, a
high pressure heater, a
water delivery pump, a
deaerator, a boiler, a highpressure cylinder and a
medium pressure cylinder. When the
electrical load is reduced, the utilization ratio of the boiler is fully exerted; a fused salt heat accumulating
system is additionally arranged to store heat of residual stem of the boiler in the high temperature fused salt through the high pressure steam-fused salt
heat exchanger; in the electrical peak stage, the high temperature fusedsalt is extracted from the fused salt tank to be fed to the high pressure steam-fused salt
heat exchanger again to heat the boiler feed water and generate high temperature high pressure steam and issent to a
turbine to increase the
generating capacity of the
turbine and play a peak regulating role on a unit. Residual steam generated by the boiler can be recovered when the
electrical load is relatively low, so that the utilization ratio and the operating safety of the boiler are improved, and the purpose of being energy-saving is achieved.