GAS-PUMPING UNIT (GPU), GPU AIR SUCTION PATH, GPU SUCTION AIR DUCT, GPU AIR SUCTION CHAMBER (VARIANTS) Russian patent published in 2019 - IPC F02C7/52 F02C7/45 F02C7/47 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to the oil and gas industry. Gas-pumping unit (GPU) comprises series-connected on working medium: an air suction path comprising a CCTV, a suction air duct and a two-section air suction chamber; gas turbine installation with an inlet device for supplying air from the air intake chamber to the entrance to the gas turbine engine, exhaust gas exhaust path, gas compressor and cooling system of gas turbine engine. Air duct is made in the form of a composite cylindrical pipe consisting of the main and transition sections and two headpieces. First headpiece is installed at the inlet to the air duct, is endowed with the function of a transition chamber and has the shape of a truncated parallelepiped. Air duct transition section is curvilinear with reduction to the main horizontal section of the air duct. Second headpiece is installed at the air duct outlet and is combined with the bottom section of the suction chamber. Upper section of the suction chamber is placed above the air duct and at the output it is interconnected with the input device of the gas turbine engine. Floor-overlapping panel between sections is made in the form of a grid with aerodynamic transparency coefficient K_at floor panel satisfying condition K_at=(0.62÷0.87). Lower section is made in the form of a composite arc-shaped tray with a downward facing vertex and equipped with an aerodynamic screen which changes the working medium flow direction. In the upper section there is a sliding sheet flap consisting of two halves with a central hole for passage of the socket of the input device.

EFFECT: improving reliability, efficiency and service life of gas compressor unit due to improvement of structural, aerodynamic and energy parameters of components of air suction circuit.

10 cl, 5 dwg