Hydrogen-electricity hybrid power turbofan engine

Abstract

The invention discloses a hydrogen-electricity hybrid power turbofan engine which comprises a fan and a low-pressure turbine, the fan is not in transmission connection with the low-pressure turbine, a motor used for driving the fan to rotate is arranged in a fairing of the fan, a power generator is embedded in the low-pressure turbine, the low-pressure turbine is fixedly connected with a rotor part of the power generator, and the low-pressure turbine is fixedly connected with the rotor part of the power generator. The power output end of the generator is connected with the power input end of the motor through a power transmission line, the power input end of the motor is further connected with the power output end of the hydrogen fuel cell, and the hydrogen fuel cell is used for providing power for the motor. On the basis of an original turbofan engine structure, transmission connection between the fan and the low-pressure turbine is disconnected, the motor is used for driving the fan, meanwhile, kinetic energy of the low-pressure turbine is partially converted into electric energy to be used, and therefore a large rotating speed difference can be generated between the fan and the low-pressure turbine, and the power generation efficiency is improved. And the hydrogen-electricity hybrid power output of the turbofan engine is realized.

Description

technical field [0001] The invention relates to the technical field of turbofan engines, in particular to a hydrogen-electric hybrid turbofan engine. Background technique [0002] The structure of a traditional turbofan engine is mainly composed of an air inlet, a compressor, a combustion chamber, a turbine, and an exhaust nozzle. The turbo mechanical connection, the high-pressure compressor is mechanically connected with the high-pressure turbine through the high-pressure shaft, the available energy in the gas generated by the combustion chamber, part of which drives the low-pressure turbine to rotate to drive the fan, and part of the gas that is accelerated in the nozzle, and is released by the nozzle The injected gas and the air exhausted by the fan jointly produce a reaction thrust. In traditional turbofan engines, in order to adapt to aviation kerosene as fuel, usually the rotation speed of the low-pressure turbine needs to be slower and the fan needs to be faster to i...

AI Technical Summary

Problems solved by technology

At present, the more serious problem is that hydrogen is used as fuel. Due to the characteristics of hydrogen fuel, the speed difference between the low-pressure turbine and the front fan is larger, and the traditional mechanical structure design is too difficult.

At the same time, if you want the aircraft to have a good take-off and landing capability on plateau, you need to increase the reserved thrust of the engine, which will increase the weight ratio of the engine system to the aircraft

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