SU83007A1 - Gas turbine installation - Google Patents

Description

Gas turbine installations are known, consisting of two turbines connected by a common shaft, driven by an air compressor from a steam turbine and using the heat removed by otgazov in the combustion chamber to form steam, and the heat removed from the gases in the heat exchanger to superheat the steam.

The gas turbine installation described in accordance with the invention differs from that known by the use of two controlled exhaust valves installed in the combustion chamber; With the help of these valves, the combustion process is carried out first at constant volume and then at constant pressure.

Diagram of the gas turbine installation shown in the drawing.

The air is sequentially compressed in the compressors / and 2 connected by the air duct 3, and through pipe 4, the receiver 5 and the valve 6 enters the combustion chamber 7. The fuel is supplied to the combustion chamber 7 by the pump 8 through the nozzle 9. The ignition of the mixture is effected by electric ignition. The combustion process in the chamber first takes place at a constant volume. Valve 10 then opens, through which part of the gases through port 11 is passed through to the chamber 3 into receiver 12.

Gases from receiver 12 enter the first stage of the turbine 13 (nozzle apparatus 14 and impeller 15) and the multistage part 16 of the turbine, from where they are directed through the nozzle 17 to the preheater 18 and discharged through the nozzle 19 to the atmosphere.

After opening valve 10, the combustion process in chamber 7 is continued at constant pressure.

After combustion, the valve 10 closes. A valve 20 opens, releasing gases into the cylinder 21 (nozzle 22 and impeller 23). The gases exiting the turbine 21 through the nozzle 24 also pass through the preheater 18 and are vented to the atmosphere.

No. 83007

After outflow of gases from chamber 7, it is blown with air, which is supplied by compressor 1 through line 25 through valve 26.

A steam turbine 27 designed to drive compressors is powered by steam, which is formed by heating water in the jacket 28 of the combustion chamber 7. The water, overheated in the jacket 28, passes through the throttle valve 29 and is turned into steam. The wet steam from the collector 30 enters the superheater 3, and the water condensed with in the collector 30 is directed to the pump 32. From the superheater 31, the steam enters the steam turbine 27 through the pipeline 33. The exhaust steam enters the condenser 34. The condensate is fed through the pump 35 into the water part 36 of the preheater 18. In addition, condensate can be used with the help of pipelines 37 and 38 used to cool the compressors / and 2. From the preheater L8, the co-condensate is returned to the pump 32 supplying the jacket 28 of the combustion chamber 7.

Subject invention

A gas turbine plant consisting of two turbines connected by a common shaft and driven by an air compressor from a steam turbine and using the heat removed from the gases in the combustion chamber to generate steam and heat removed from the gases in the heat exchanger to superheat the steam, characterized in that , in order to carry out the combustion process, first with a constant volume and then at a constant pressure, two controlled exhaust valves are installed in the combustion chamber, one of which releases part of the gases into one turbine after the combustion of fuels and at a constant volume, while the other releases the rest of the gases to another turbine after the combustion of the fuel at a constant pressure.