A flywheel energy storage rotor cooling system
A flywheel energy storage and heat dissipation system technology, which is applied in the direction of electric energy storage system, mechanical energy control, cooling/ventilation device, etc., can solve the problem of limited improvement of heat transfer capacity, limited temperature difference of radiation heat exchange, which cannot fully meet the requirements of flywheel energy storage system Rotor heat dissipation requirements and other issues, to achieve the effect of small loss, lower rotor temperature, and large heat transfer
Active Publication Date: 2022-04-19
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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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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[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. The structure and technical solutions of the present invention will be ...
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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 rotor of the integrated motor / generator, the rotor of the electromagnetic bearing and the rotor of the flywheel are coaxially fixed, and the inner holes are drilled, and they are connected with the rotating heat pipe by bonding, interference fit, brazing or soldering. A magnetic fluid seal is used between the rotor and the vacuum housing. The invention arranges radiating fins in the evaporation section of the heat pipe, utilizes the transformation of the working medium in the heat pipe from liquid to gaseous state, takes out the heat inside the rotor, uses a circulating pump to discharge helium to cool the evaporation section of the heat pipe, and cools it through a cooling heat exchanger post cycle. The invention has the advantages of high heat exchange efficiency and large heat dissipation, and can solve the heat dissipation problem of the flywheel energy storage vacuum rotor.
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 heat pipe heat transfer and a rotor cooling system of the flywheel energy storage system under vacuum conditions. Background technique [0002] Since the 21st century, human society has developed rapidly, technological innovations are changing with each passing day, population and economy are also growing, and the demand for energy has been strengthened. With the strengthening 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 energy and solar energy has strong gaps and fluctuations, and it is difficult to adjust. Large-scale grid connection will have a negative impact on the stab...
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IPC IPC(8): H02K5/20H02K5/18H02K9/19H02K7/02H02J15/00
CPCH02K5/20H02K5/18H02K9/19H02K7/02H02J15/007Y02E60/16
Inventor 王艺斐王亮戴兴建陈海生胡东旭
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI