High-speed runoff turbine and gas compressor composite impeller

Abstract

The invention relates to a high-speed runoff turbine and a gas compressor composite impeller. The turbine mainly comprises a turbine impeller, a gas compressor impeller, a transition hub and the like.The turbine impeller, the gas compressor impeller and the transition hub are of an integrated structure, the turbine impeller and the gas compressor impeller are located on the same axis, and the transition hub is located between the backs of the gas compressor impeller and the turbine impeller. The composite impeller is reliably connected with a rotating shaft through a blind hole and a threadedhole in an air inlet flow guide boss at the side air inlet end of the gas compressor impeller. According to the size parameters of a turbine, a gas compressor and a rotating shaft in the closed Brayton cycle power generation system, on the basis of determining the structural parameters of the composite impeller, composite impeller machining and assembly between the composite impeller and the rotating shaft are completed. The structure of the turbine can reduce the number of rotating parts of the closed cycle power generation system, reduce the processing difficulty of a rotor assembly, improve the assembly precision of a rotor structure, and ensure the working reliability and service life of the power generation system.

Description

technical field [0001] The invention belongs to the technical field of structural design of a closed Brayton cycle thermoelectric conversion system, and in particular relates to a composite impeller of a high-speed radial flow turbine and a compressor. Background technique [0002] As a new form of thermoelectric conversion, the closed Brayton cycle thermoelectric conversion system can convert thermal energy to mechanical work through thermal processes such as heat absorption, expansion work, heat release and compression with the help of a certain gas working fluid in a closed environment. , and the mechanical work is further converted into electrical energy by a generator. During the working process of the closed Brayton cycle thermoelectric conversion system, there is only energy exchange with the outside world, but no working fluid exchange. A typical closed Brayton cycle thermoelectric conversion system is mainly composed of turbines, compressors, generators, regenerato...

AI Technical Summary

Problems solved by technology

This structure consists of many parts, and the transmittable power or torque is limited, especially in the case of large torque transmission, it is easy to cause loosening of the connection between the rotating shaft and the compressor impeller or turbine impeller.

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