Liquid helium and superflow helium temperature zone insulating material high-voltage electric appliance performance test platform

Abstract

The invention provides a liquid helium and superflow helium temperature zone insulating material high-voltage electrical performance test experiment platform. The platform comprises a vacuum chamber,a first-stage test chamber and a second-stage test chamber which are nested layer by layer from outside to inside. A refrigerator is used for providing cold energy for a liquid helium temperature zonetest platform in the first-stage test chamber, so that the test requirement of the insulating material under the 4.2 K temperature zone use condition can be met; and the second-stage test chamber isin contact with a liquid helium temperature zone test platform, helium is introduced, and the cooling capacity is provided for the liquid helium temperature zone test platform by adopting the refrigerator, helium introduced into the helium condensation cavity is liquefied under the action of the refrigerator; liquefied helium is converted into superfluid helium through a throttle valve and an airexhaust pressure reduction pipeline, and the superfluid helium is output into the superfluid helium cavity to provide cold energy for a superfluid helium zone test platform in the secondary test chamber, so that the test requirement of the insulating material under the 1.8 K temperature area use condition can be met.

Description

technical field [0001] The invention relates to the field of superconducting magnet devices, in particular to the design of a high-voltage electrical performance testing platform for insulating materials in liquid helium and superfluid helium temperature zones. Background technique [0002] With the development of superconducting technology, especially the development of large-scale superconducting magnet equipment, such as the International Thermonuclear Experimental Reactor (ITER), Experimental Advanced Superconducting Tokamak (EAST) and other devices, the design of its internal electrical system and Its safety and stability are getting more and more attention. The design of the insulation structure in the electrical system is related to the stability of the entire system operation, so it is very necessary to test the electrical performance of the insulating material. [0003] The insulating materials used in electrical insulation design are exposed to the harsh environme...

AI Technical Summary

Problems solved by technology

The operating environment of low-temperature superconducting equipment is generally in the temperature zone of liquid helium or even superfluid helium. If the target temperature zone is reached directly by soaking in liquid helium, it will cause a lot of waste of helium resources on the one hand, and the economic cost will be relatively low on the other hand. high

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