Single composite impeller gas turbine engine

Abstract

The invention discloses a single composite impeller gas turbine engine. The single composite impeller gas turbine engine mainly comprises a composite impeller combining a centrifugal compressor bladeand a hollow turbine blade into one, a main shaft, a starting motor, a clutch, bearings, a rectification support, an annular rotational flow combustion chamber, an annular machine shell assembly, a tail cone and an exhaust nozzle; the main shaft is fixedly connected with the composite impeller, the starting motor is connected with the main shaft through the clutch, the main shaft is installed in ashaft sleeve through the two bearings, the rectification support is connected with the annular machine shell assembly, and the annular machine shell assembly is provided with installing clamps to befixed to a plane; and the annular rotational flow combustion chamber is located in the annular machine shell assembly, the tail cone is located at the back portion of the impeller, and the exhaust nozzle and the shell assembly are connected into a whole. The single composite impeller gas turbine engine has the advantages that the engine is simplified in structure and reduced in weight, improves the mechanical rotating performance of a rotor, reduces the cost, can effectively use compression airflow to cool the hollow turbine blade, further improves the performance and further prolongs the service life.

Description

technical field [0001] The invention relates to the field of gas turbines, in particular to a gas turbine engine with a single compound impeller. Background technique [0002] In the field of aviation, with the development of aviation technology, unmanned aerial vehicles and light aircraft have gradually become one of the most attractive products. However, the lightness and high efficiency of the power plant is the key technology that restricts the development of the above-mentioned aircraft. The demand and development of micro-turbine engines is getting faster and faster, which is an important branch of aeroengines. It mainly provides the required power for unmanned aerial vehicles, cruise missiles, light aircraft, etc., and can also provide electricity and power for ground devices. The usual micro-turbine engine is mainly composed of a transmission shaft connecting the centrifugal compressor and the radial turbine or axial flow turbine to form a rotor rotating part. The sm...

AI Technical Summary

Problems solved by technology

The usual micro-turbine engine is mainly composed of a transmission shaft connecting the centrifugal compressor and the radial turbine or axial flow turbine to form a rotor rotating part. The small rotor has a high speed and a large span, and it is difficult to control the rotation accuracy and vibration stability of the rotor.

At the same time, due to structural cost constraints, the usual tiny engine does not cool the turbine, which greatly reduces the life of the turbine and the performance of the engine, seriously affecting its development and application

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