GAS TURBINE EXPANDER POWER PLANT OF COMPRESSOR STATION OF MAIN GAS LINE Russian patent published in 2016 - IPC F01K27/00 F04D25/00 F01K23/02 

FIELD: energy.

SUBSTANCE: invention can be used for power supply of auxiliary compressor stations of gas mains. Apparatus comprises high-pressure fuel gas line, separator, heater of high-pressure fuel gas, turbine expander with input guide vanes, compressor, regenerative air heater, combustion chamber, gas turbine, electric generator, medium-pressure fuel gas line, fuel gas line, heater of fuel gas, regulator. High-pressure fuel gas line via separator and heater of fuel gas is connected to input of turbine expander, output of which via medium-pressure fuel gas line, fuel gas heater and fuel gas line is connected with combustion chambers of regenerative gas turbine expander unit and gas turbine gas transfer units. Rotor of turbine expander is connected by common shaft with compressor rotor, rotor of gas turbine is connected with electric generator rotor. Gas transfer units are equipped with waste-heat coolant heaters connected by coolant pipelines with high-pressure fuel gas heater and with heater of fuel gas. Regulator is connected by pulse lines with controlled input guide vans of turbine expander and with pipeline of fuel gas. Unit additionally equipped with a gas cooler, installed in manifold gas line of natural gas after blower of gas turbine gas transfer units and air cooling apparatus, and on fuel gas-cooler is installed in medium-pressure gas fuel line between output of turbine expander and input of fuel gas heater.

EFFECT: providing power supply of auxiliary compressor stations, higher efficiency and possibility of cooling natural gas, compressed in GCU pump unit.

1 cl, 1 dwg