Field superconducting magnet anti-frosting self-adaptive heating device

Abstract

The invention discloses a field superconducting magnet anti-frosting self-adaptive heating device, and the device comprises a temperature acquisition unit, a temperature controller and a heater; a first receiving end of the temperature controller is connected with an output end of a temperature collection module and is used for receiving an environment temperature value collected by the temperature collection module in real time, and the temperature controller sets a heating temperature as the environment temperature value in real time; the second receiving end of the temperature controller isconnected with the second temperature sensor and used for receiving the internal temperature value collected by the second temperature sensor, the output end of the temperature controller is connected with the heater, and the temperature controller compares and analyzes the heating temperature and the internal temperature value and controls the heater to be turned on and turned off; therefore, the temperature of the connecting position of the vacuum Dewar and the refrigerating machine is kept consistent with the temperature of the external environment, frosting is eliminated, the heater is installed in the vacuum Dewar, and the external use space is not affected.

Description

technical field [0001] The invention belongs to the technical field of superconducting magnets, in particular to an anti-frost self-adaptive heating device for superconducting magnets used in the field. Background technique [0002] With the development of superconducting and low-temperature technology, superconducting magnets have been increasingly widely used in scientific and technological fields such as large scientific engineering, energy, transportation, electric power, medical treatment, materials, and electronics. Superconducting magnet is a general term for coils wound with superconducting wires and containers for keeping them ultra-low temperature. Since superconducting coils operate in extremely low-temperature environments such as liquid helium temperatures, the structure of superconducting magnet devices is generally designed with double-layer vacuum Dewar, anti-corrosion Radiation cold screen, multi-layer heat insulation radiation screen and other structures to...

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Problems solved by technology

Although the optimal design of tie rods, current leads, etc. try to achieve a balance between their functions and heat leakage, but because their heat transfer path extends from room temperature to extremely low temperature environment, the temperature at the connection position with the outer Dewar room temperature end must be low. at room temperature

When the humidity of the surrounding environment reaches a certain value and the temperature of the connection is higher than zero, condensation will occur, and long-term condensation will cause the accumulation and flow of condensed water; when the humidity of the surrounding environment reaches a certain value and the temperature of the connection is below zero There will be frost, and severe frost may also cause ice to occupy a certain amount of space

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