A High Voltage Insulated Current Lead Structure

Abstract

The application discloses a high-voltage insulated current lead structure, which relates to the technical field of superconducting equipment, including: a lower seal, an aluminum tube, an epoxy sleeve, and a copper conductor; the aluminum tube is sleeved outside the copper conductor, and the inner wall and the copper conductor A ring-shaped first gap cavity is formed between the outer walls; the epoxy sleeve is coated on the outside of the aluminum tube; the lower seal is installed on one end of the epoxy sleeve and is sealed and connected with the epoxy sleeve; the copper conductor is provided at the end protruding from the lower seal. There is a connecting part connected with the lower sealing part; the second gap cavity is enclosed between the end of the aluminum tube facing the lower sealing part, the inner end wall of the lower sealing part, the inner wall of the epoxy sleeve and the outer wall of the copper conductor. The above design makes the lower sealing part only in contact with the epoxy sleeve, not with the inner aluminum tube. During the cooling process immersed in liquid nitrogen, the cooling rate will be effectively controlled, and the temperature unevenness in the longitudinal direction will be optimized and improved. , so as to control the relative deformation between the aluminum tube and the epoxy sleeve, it is not easy to be damaged, and it works better in a low temperature and high voltage environment.

Description

technical field [0001] The present application relates to the technical field of superconducting equipment, in particular to a high-voltage insulated current lead structure. Background technique [0002] The high-voltage insulated current leads used in superconducting equipment are used as the interface between superconducting equipment such as superconducting current limiters and the external power grid. They span the room temperature range to the liquid nitrogen temperature range. The electric field gradient is large, which is the key to system heat leakage and overall insulation. The key components. At present, the high-voltage insulated current leads used in superconducting equipment are insufficient in design, and the performance of the high-voltage insulated current leads is unstable, and they are prone to breakdown when used in a low-temperature and high-pressure environment. Contents of the invention [0003] In view of this, the purpose of this application is to ...

AI Technical Summary

Problems solved by technology

At present, the high-voltage insulated current lead used for superconducting equipment is not stable due to the design deficiency, and the performance of the high-voltage insulated current lead is unstable, and it is easy to be broken down when used in a low temperature and high pressure environment.

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