FIELD: power engineering.
SUBSTANCE: steam and gas plant based on an NPP comprises a steam turbine with high and low pressure cylinders, a separator, a double-stage intermediate steam-steam superheater, a high pressure heater, a gas turbine plant, a gas water heat exchanger, at least one accumulator tank, a peak turbine, an afterburning device, a system of phase transition accumulators. The system of phase transition accumulators is made in the form of sections isolated by stop valves with the possibility of cyclic charging and discharging of accumulators. Also the proposed NPP-based steam and gas plant comprises a hot water expander, arranged on a connection pipeline between the system of phase transition accumulators and the accumulator tank.
EFFECT: invention makes it possible to increase coefficient of NPP power unit rated power with simultaneous expansion of control range of the entire steam and gas plant.
3 cl, 1 dwg
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