Gas-lubricated ceramic rotor for radial turbine power generation system and manufacturing method thereof

Abstract

The invention relates to a gas-lubricated ceramic rotor for a radial turbine power generation system and a manufacturing method thereof. The rotor is mainly composed of a lock nut, a compressor impeller, a composite bushing, a connecting bushing, a motor shaft, a radial bushing and a turbine shaft, etc. components. On the basis of completing the processing of the rotor parts, firstly carry out the welding of the turbine shaft and the assembly of the motor shaft, followed by the assembly of the motor shaft, the radial bushing and the turbine shaft, and then the assembly of the connecting bushing and the motor shaft and the connection of the composite bushing Bushing assembly, and finally the compressor impeller and connecting bushing, turbine shaft and lock nut are assembled. The contact part between the rotor and the bearing is made of ceramic material, which can reduce the friction between the rotor and the bearing, and improve the working life and structural reliability of the turbine power generation system. To improve the running stability and structural reliability of the rotor.

Description

technical field [0001] The invention belongs to the structural design field of a closed cycle radial turbine power generation system, and in particular relates to a gas lubricated ceramic rotor of a radial turbine power generation system and a manufacturing method thereof. Background technique [0002] As a new and efficient form of heat conversion, the closed-cycle turbine power generation system can convert heat energy into electric energy through thermal processes such as heat absorption, expansion work, heat release, and compression with the help of a certain gas working medium in a closed environment. A closed cycle radial turbine power generation system is usually mainly composed of turbines, compressors, motors, regenerators, connecting pipelines and other components. [0003] The rotor of the closed cycle radial turbine power generation system includes two parts: the turbine and the compressor impeller rotor and the generator rotor. It is one of the core components i...

AI Technical Summary

Problems solved by technology

The rotor of the existing closed-cycle turbine power generation system adopts an interference connection structure. Although the coaxiality between the parts of the rotor can be guaranteed to a certain extent, the strength of the interference connection of the rotor depends on the assembly size and Its tolerance puts forward very high requirements on the machining accuracy of the assembly parts of the parts; in addition, the rotor is affected by the centrifugal load during the working process, the interference of the connecting parts is reduced during work, and the connection strength and rigidity of the rotor cannot be effectively guaranteed , the components of the rotor are prone to loosening, which seriously affects the reliability of the closed cycle turbine power generation system

In addition, this type of rotor requires high processing quality and poor repeatability

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