FIELD: engines and pumps.
SUBSTANCE: proposed plant comprises steam turbine with high- and low-pressure cylinders, gas turbine unit, two-stage steam-and-gas superheater with heating side connected to gas turbine exhaust gas circuit and heated side connected to steam dust between aforesaid cylinders parallel with live steam superheater. Aforesaid cylinders are communicated via steam line incorporating separator and two-stage intermediate live steam superheater. Gas turbine unit includes gas turbine, combustion chamber and compressor fitted on steam turbine shaft. Besides, proposed plant comprises gas-water heat exchanger and afterburner to heat gas to required temperature with its inlet communicated with gas turbine exhaust gas circuit and its outlet communicated with gas-steam superheater and equipped with bypass gas line with shutoff valves. Has-water heat exchanger has its heating side connected to gas-steam superheater and its heated side connected to feed water line, and is arranged in series or parallel with high-pressure heater. Two-stage gas-steam superheater heated side is connected in parallel with live steam line from steam generator.
EFFECT: higher efficiency and mobility.
1 dwg
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