Helium channel structure used for connecting liquid nitrogen temperature region and normal temperature region

Abstract

The invention discloses a helium channel structure used for connecting a liquid nitrogen temperature region and a normal temperature region. The helium channel structure comprises a helium channel component and a channel interior thermal insulation component, and a heat conducting path from a normal temperature end to a low temperature end is transferred onto a cold shield, so that heat leakage ofa liquid nitrogen container is reduced; a solid conducts leaked heat, namely heat is conducted onto a heat sink from a room temperature end, and the heat sink conducts the heat to the cold shield ofa low temperature superconducting magnetic system by virtue of a heat conducting connecting piece; the leaked heat is radiated, wherein a heat cut-off light barrier in the channel interior thermal insulation component is contacted with the heat sink in a helium channel, and a high temperature surface of the leaked heat radiated by liquid helium can turn into the heat cut-off light barrier from a room temperature flange surface and is above a light barrier, so that the leaked heat radiated in the channel is greatly reduced; and a gas conducts the leaked heat, namely a high temperature end of heat leaked by helium gas also becomes the heat cut-off light barrier from a room temperature surface, so that the heat leaked by the gas in the channel is greatly reduced.

Description

technical field [0001] The invention relates to the field of low-temperature superconducting magnet devices, in particular to a helium channel structure used for a zero-volatile low-temperature superconducting magnet system connecting a liquid helium temperature zone and a room temperature zone. Background technique [0002] As an emerging technology in the 21st century, superconducting technology has been widely used in many fields such as national economy, scientific experiments, national defense and military industry, and its industrial scale is also growing. [0003] Superconductivity refers to the property that some substances have zero resistance to cooling under certain temperature conditions, so superconducting coils work at extremely low temperatures. As the core component of superconducting magnets, superconducting coils have always attracted much attention, and their safety and stability are also the focus of research. At present, the low-temperature environment ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a helium channel structure for connecting the liquid helium temperature zone and the normal temperature zone, so as to solve the problem of excessive heat leakage in the existing liquid helium system

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