Rotary mechanical equipment, supercritical working medium recompression cycle power generation system and process

Abstract

The invention relates to the technical field of supercritical working medium circulation, in particular to rotary mechanical equipment, a supercritical working medium recompression cycle power generation system and process. The rotary mechanical equipment comprises a turbine and a first compressor, wherein a driving shaft of the turbine and a transmission shaft of the first compressor are coaxially connected to form a first rotating shaft; and an inlet of the first compressor is opposite to an outlet of the turbine, or an outlet of the first compressor is opposite to an inlet of the turbine. The supercritical working medium recompression cycle power generation system involves the rotary mechanical equipment. The supercritical working medium recompression cycle power generation process adopts the power generation system. According to the rotary mechanical equipment, the supercritical working medium recompression cycle power generation system and process, the turbine and the first compressor are arranged in the mode that the axial thrust directions are opposite, the axial load borne by the first rotating shaft is effectively reduced, the operation reliability and safety are improved,and the rotary mechanical equipment has the advantages of being simple and compact in structure and high in acting power.

Description

Technical field [0001] The invention relates to the technical field of supercritical working fluid circulation, in particular to a rotating mechanical equipment, a supercritical working fluid recompression cycle power generation system and a process thereof. Background technique [0002] With the continuous development of the world economy, energy demand is increasing day by day. At present, electric power units are moving towards the trend of high parameters, high power, and high efficiency. How to make good use of energy has become the focus of attention of industry scholars and related research institutions. Supercritical working fluid cycle (for example, supercritical carbon dioxide recompression cycle) has broad engineering application prospects in conventional thermal power, new generation nuclear power, ship power, concentrated solar power generation and other fields. [0003] Among them, the rotating machinery and equipment in the related technology with turbines and compr...

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Problems solved by technology

[0004] The first object of the present invention is to provide a rotating mechanical device to solve the problem of the rotating mechanical device in the prior art having a small size, a high rotational speed and energy density, and a large pressure difference between the inlet and outlet to a certain extent. There will be technical problems that the axial thrust of rotating mechanical equipment is extremely large, resulting in unreliable and unstable work

[0005] The second object of the present invention is to provide a supercritical working fluid recompression cycle power generation system to solve the problem of small size, high speed and high energy density of the rotating mechanical equipment in the power generation system in the prior art to a certain extent. In the case of a large outlet pressure difference, there will be technical problems that the axial thrust of the rotating mechanical equipment is extremely large, resulting in unreliable work and unreasonable speed matching.

[0006] The third purpose of the present invention is to provide a supercritical working fluid recompression cycle power generation process to solve the problem of small size, high speed and energy density, high import and export of rotating mechanical equipment in the power generation system in the prior art to a certain extent In the case of a large pressure difference, there will be technical problems that the axial thrust of the rotating mechanical equipment is extremely large, resulting in unreliable work and unreasonable speed matching.

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