GAS TURBINE EXPANSION POWER PLANT OF GAS-DISTRIBUTING STATION Russian patent published in 2015 - IPC F02C6/04 F25B11/02 

FIELD: power industry.

SUBSTANCE: gas turbine expansion power plant of gas-distributing station contains a turbine expander with adjustable nozzle device, a gas-turbine plant with a low pressure compressor, a combustion chamber and a gas turbine, an electric generator, a fuel gas pipeline, an outlet gas main line, a bypass main line with a reducing unit, a control system, a heat exchanger for high pressure gas pre-heating, a heat exchanger for pre-heating of gas from the output main gas line. The main high pressure gas line through the heat exchanger of high pressure gas pre-heating is connected with the input of the turbine expander with the adjustable nozzle device, and through the bypass main line fitted with the reducing unit - with the output gas main line. The gas turbine expansion power plant is also fitted with a high pressure compressor, a regenerator, an air duct and an additional turbine expander connected through an intermediate gas heater - air cooler, with the turbine expander output with the adjustable nozzle device. The heat exchanger of high pressure gas pre-heating and the heat exchanger for pre-heating of gas from the output main gas line are designed as waste ones. The outlet of the low pressure compressor is connected by air duct through the intermediate gas heater - air cooler with the high pressure compressor inlet. The high pressure compressor outlet through the regenerator and the combustion chamber is connected with the inlet the gas turbine the outlet of which through the exhaust gas flue containing a regenerator, waste heat exchangers for pre-heating of high pressure gas and the waste heat exchanger for heating of gas of the output gas main line is connected with the atmosphere. The inlet of the additional turbine expander is connected by the fuel gas pipeline with the combustion chamber, and its outlet - with the outlet gas main line.

EFFECT: increase of power and profitability of the gas turbine expansion power plant of gas-distributing station.

1 dwg