Flywheel energy storage rotor heat dissipation system

Abstract

The invention discloses a flywheel energy storage rotor heat dissipation system which is mainly composed of a heat pipe, a fin cooling structure, a circulating pump and the like. The electric / power generation all-in-one machine rotor, the electromagnetic bearing rotor and the flywheel rotor are coaxially fixed, are internally punched and are connected with the rotary heat pipe through bonding, interference fit, brazing or tin soldering. And the rotor and the vacuum shell are sealed by magnetic fluid. The cooling fins are arranged on the evaporation section of the heat pipe, heat in the rotor is taken out through conversion of a working medium in the heat pipe from liquid to gas, helium is discharged through the circulating pump to cool the evaporation section of the heat pipe, and circulation is conducted after cooling is conducted through the cooling heat exchanger. The system has the advantages of being high in heat exchange efficiency and large in heat dissipating capacity, and theheat dissipating problem of the flywheel energy storage vacuum rotor can be solved.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and relates to a flywheel energy storage system, in particular to a heat pipe heat transfer and a rotor heat dissipation system of the flywheel energy storage system under vacuum conditions. Background technique [0002] Since the 21st century, the rapid development of human society, rapid technological innovation, and continuous growth of population and economy have intensified the demand for energy. With the intensification of the expected depletion of global non-renewable energy resources, the contradiction between energy supply and demand has become prominent. Large-scale development and utilization of renewable energy has become the best means to solve the energy crisis, but the renewable energy represented by wind and solar energy has strong intermittent and volatility, and adjustment is difficult, and large-scale grid connection will affect the stability of the grid. It has a large...

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Problems solved by technology

However, this method and device carry out energy transfer by strengthening thermal radiation in a vacuum environment. Due to the limited temperature difference of radiation heat transfer, the improvement of its heat transfer capability is limited, and it cannot fully meet the heat dissipation requirements of the rotor of the flywheel energy storage system.

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