| 摘要 |
This invention relates to gas-steam power plants with the closed contour of circulation of gas and can be used at nuclear power plants. They heat up gas in a heater (1), then direct heated gas into gas turbine (2) where transform a part of heat of this gas into mechanical work, then transfer part of heat of this gas to liquid in steam heater (3), vaporizer (4) and heater of a liquid (5) connected in series on a way of a liquid and direct the steam received on an outlet of steam heater (3) into steam turbine (12). They compress the cooled in heat exchangers (3), (4) and (5) gas by multistage compressor (6) and return gas into heater (1) for repeated heating. In additional heat exchangers (7) in parallel with vaporizer (4) on a way of a liquid they additionally vaporize a liquid by heat of gas, heated at stages of the multistage compressor (6). After vaporizing of a liquid they additionally heat up received steam in the steam heater (3), installed by the first on a way of the gas after gas turbine (2). They direct steam after steam heater (3) into steam turbine (12) for transformation of steam energy into mechanical work. The division of process of vaporizing of a liquid by heat of gas into steps located in series on a way of the gas through stages of the compressor (6) at parallel submission of the vaporizing liquid to these steps allows to reduce the change of temperature difference between gas and a liquid in vaporizers (4) and (7) in the number of times corresponding to number of these steps, i.e. to raise temperature of vaporizing a liquid without changing parameters of gas turbines. Due to it the increase in thermal efficiency of gas-steam power unit with the closed contour of circulation of gas is reached.
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