Twin dissimilar material composite radial flow impeller and manufacturing process thereof

Abstract

The invention relates to a twin dissimilar material composite radial flow impeller and a manufacturing process thereof. According to the structure, a connecting rotating shaft, a radial flow gas compressor impeller and a radial flow turbine impeller form a complete impeller structure through an integrated connecting process. According to structural dimension parameters of a turbine, a gas compressor and a rotor in a closed cycle power generation system, on the basis of determining dimension parameters and welding process parameters of an integrated connecting part of the connecting rotating shaft, the radial flow gas compressor impeller and the radial flow turbine impeller, machining of the integrated connecting part of the connecting rotating shaft, the radial flow gas compressor impellerand the radial flow turbine impeller is completed, integrated connection of the connecting rotating shaft and the radial flow gas compressor impeller and integrated connection of the radial flow gascompressor impeller and the radial flow turbine impeller are further completed, and finally machining of the composite radial flow impeller is conducted. The structure can effectively reduce the number of rotor parts of the power generation system, reduce the processing and assembling difficulty of a rotor assembly, improve the rigidity and strength of the rotor, and facilitate the guarantee of the reliability and service life of the system.

Description

technical field [0001] The invention belongs to the structural technical field of a closed Brayton cycle thermoelectric conversion system, and in particular relates to a composite radial flow impeller made of twin dissimilar materials and a manufacturing process thereof. 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, gen...

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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