A Dewar system for high temperature superconducting magnetic levitation energy storage flywheel

Abstract

A Dewar system for a high-temperature superconducting magnetic suspension energy storage flywheel is a liquid nitrogen container capable of being used for containing and fixing high-temperature superconducting blocks in the high-temperature superconducting magnetic suspension energy storage flywheel and providing the safe, stable and long-time low-temperature environment for the high-temperature superconducting blocks. The Dewar system mainly comprises vacuum filling materials, an inner Dewar bottle wall, an outer Dewar bottle wall, a heat insulation sealing ring, a liquid nitrogen communicating vessel, an external liquid nitrogen container body, liquid nitrogen, a superconducting block support, a heat insulation coating, the high-temperature superconducting blocks and an upper end cover. The high-temperature superconducting blocks are arranged on the superconducting block support, the superconducting block support is fixed to the upper end cover, the upper end cover is fastened with the peripheral wall, formed by the inner Dewar bottle wall, the outer Dewar bottle wall and the vacuum filling materials, of a Dewar bottle, and the complete and sealed container is formed. The external liquid nitrogen container body is filled with the liquid nitrogen, the liquid nitrogen is injected into the Dewar bottle through the liquid nitrogen communicating vessel, the superconducting blocks are completely soaked in the liquid nitrogen for a long time, and the safe and long-time low-temperature environment needed by the high-temperature superconducting blocks is achieved.

Description

technical field [0001] The invention relates to a Dewar system for a high-temperature superconducting magnetic levitation energy storage flywheel. By filling the Dewar bottle with liquid nitrogen, the temperature of the high-temperature superconducting block soaked in it is reduced to below the critical temperature and superconducting characteristics, so as to provide a safe, stable and long-term low-temperature environment for the high-temperature superconducting block material of the high-temperature superconducting magnetic suspension energy storage flywheel superconducting bearing, and ensure that the high temperature superconducting magnetic suspension energy storage flywheel can work normally and stably for a long time. The invention is also applicable to the realization of the low-temperature environment of high-temperature superconducting bulk materials in common applications. Background technique [0002] The energy problem is a huge challenge faced by mankind in th...

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Problems solved by technology

[0005] The technical solution problem of the present invention is: to overcome the existing liquid nitrogen Dewar system can not meet the application requirements of the high temperature superconducting magnetic suspension energy storage flywheel, to provide a high temperature superconducting block material in the high temperature superconducting magnetic suspension energy storage flywheel Safe, stable, and long-term low-temperature environment, and make the working distance between the high-temperature superconducting block and the permanent magnet within the range of 2 to 3mm, which meets the needs of the high-temperature superconducting magnetic levitation energy storage flywheel and can provide a large enough Levitation force, guiding force, axial stiffness and radial stiffness

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