Threaded connection rotor structure of turbine thermoelectric conversion system

Abstract

The invention relates to a threaded connection rotor structure of a turbine thermoelectric conversion system and a manufacturing method. The rotor structure is formed by assembling a compressor impeller, a locking ring, a shaft sleeve, a motor shaft and a turbine rotating shaft; and the compressor impeller, the locking ring, the shaft sleeve, the motor shaft and the turbine rotating shaft are connected through threaded assembly structures. On the basis of finishing the machining of component parts of a rotor, firstly assembling the motor shaft, secondly assembling the motor shaft and the turbine rotating shaft, then assembling the shaft sleeve, the motor shaft and the turbine rotating shaft, and finally assembling the compressor impeller, the shaft sleeve, the turbine rotating shaft and the locking ring to form a complete rotor structure. Through the adoption of the threaded assembly connection structure among the component parts of the rotor, the connection strength and rigidity of the rotor can be effectively improved, the loosening of the component parts of the rotor of the turbine thermoelectric conversion system in the working process is prevented, and the running stability ofthe rotor and the working reliability of the system are improved.

Description

Technical field [0001] The invention belongs to the structural design field of a closed-cycle turbine thermoelectric conversion system, and particularly relates to a threaded rotor structure of a turbine thermoelectric conversion system. Background technique [0002] The closed-cycle turbine thermoelectric conversion system, as a new and efficient form of thermal conversion, can convert thermal energy to electrical energy through thermal processes such as absorbing heat, expanding work, releasing heat, and compressing in a closed environment with a certain gas working medium. A typical closed-cycle turbine thermoelectric conversion system is mainly composed of turbine, compressor, motor, regenerator and other components. [0003] The rotor of the closed-cycle turbine thermoelectric conversion system includes two parts: the turbine and compressor impeller rotor and the generator rotor. It is the most core component in the system, which plays a decisive role in the stable operation o...

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Problems solved by technology

The existing rotor structure adopts the interference connection method. 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 dimensions and tolerances of the parts. The processing accuracy of the assembly parts puts forward very high requirements; in addition, the actual interference of the connecting parts of the rotor will decrease during the working process, reducing the connection strength of the rotor, and the parts are easy to loosen, which directly affects the closed cycle turbine thermoelectric conversion system reliability; in addition, the repeatability of such rotors is poor

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