Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (3): 1051-1059.doi: 10.19799/j.cnki.2095-4239.2020.0404

• Energy Storage Materials and Devices • Previous Articles     Next Articles

Structure analysis of high temperature heat storage conductor based on thermal-electricity-magnetic field coupling

Yanfeng TIAN1(), Xinxin ZHAO1, Qitong FU1, Zhe WANG1, Xuzhang ZHAO2   

  1. 1.School of Electrical Engineering, SUT, Shenyang 110870, Liaoning, China
    2.Xinjiang Huli Jiayuan Environmental Protection Technology Limited Company, Urumqi 830022, Xinjiang, China
  • Received:2020-12-16 Revised:2021-01-18 Online:2021-05-05 Published:2021-04-30
  • Contact: Yanfeng TIAN E-mail:windy_tian@163.com

Abstract:

In the inspection of the internal conductor of the solid heat storage device, it was found that problems such as the deformation of the conductor, the self-short circuit, and the breakdown of the component due to the electromagnetic force of the heat transfer conductor under the high temperature situation, which seriously affect the safety of heat storage. In order to study the electromagnetic distribution and force of the electric heating element in the heat storage hole, this article focuses on the electromagnetic analysis and calculation of the 800 ℃ high-voltage electric heating element structure optimization design to ensure the reasonable distribution of electromagnetic field under high voltage. A three-dimensional finite element calculation model was established for the spiral and wave-shaped electric heating elements, the magnetic density distribution of the two models was analyzed, and the bending structure of the wave-shaped electric heating element was optimized. The influence of different voltages and different wave distances on the magnetic density spatial distribution of flat-angle wave elements is analyzed. Research shows that the magnetic density distribution of the wave-shaped electric heating elements in the two structures is more reasonable; The optimized flat-angle design can effectively reduce the internal and external breakdown of the component. The voltage only has an effect on the magnetic density value of the heating element, and the large wave pitch can effectively reduce the magnetic density distribution. While proving the feasibility of the proposed electric heating element model, this article also has a good guiding value for heat storage safety.

Key words: thermal storage device, high temperature and high voltage, electric heating element, magnetic density distribution, structural analysis

CLC Number: