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A current lead insulation sealing device

A current lead, insulation and sealing technology, applied in the direction of circuits, electrical components, superconducting magnets/coils, etc., can solve the problems of inability to disassemble and assemble at will, easy leakage of epoxy fiberglass interface, troublesome replacement and maintenance, etc., and achieve simple structure , good insulation and sealing performance, and low cost

Active Publication Date: 2011-12-21
CHINA ELECTRIC POWER RES INST +1
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  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the permanent deformation caused by the strong pre-tightening force, the epoxy glass fiber reinforced plastic interface is prone to air leakage during the heating and cooling process; since the ceramic tube, current lead, and liquid nitrogen Dewar welding structure cannot be disassembled and assembled at will, replacement and maintenance are very troublesome

Method used

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  • A current lead insulation sealing device
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Embodiment Construction

[0024] The insulating and sealing device of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] The insulating and sealing device of the present invention mainly includes current leads and insulating and sealing components. Such as figure 1 As shown, the current lead is mainly composed of a copper rod and a conversion joint 3. The copper rod includes a lower solid part 1 and an upper hollow part 2. The upper end of the hollow part 2 is connected to the conversion joint 3, and the lower end of the hollow part 2 is connected to the solid part 1. The solid part 1 is a solid cylinder; the main body of the hollow part 2 is a hollow cylinder, and its lower part is coaxially provided with a boss 9 for improving the pressure resistance of the rod; the outer surface of the solid part 1 is provided with a spiral concave Groove 10, which is used as a channel for transporting cooling gas (such as nitrogen), the setting o...

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Abstract

The invention belongs to the technical field of cryogenic superconductors, in particular to a current lead insulating and sealing device. The device comprises a current lead, an inner sealing part, a nut, a base and an outer sealing part, the inner sealing part is supported by the base, the upper and the lower ends of the current lead respectively pass through the axial through holes in the outer sealing part and the inner sealing part, the outer sealing part is then fastened with the inner sealing part, and the current lead is fixed by the nut sleeved on the outer sealing part. The current lead insulating and sealing device has the advantages of simple structure, low cost, excellent insulating and sealing properties and the like, is convenient to assemble, and solves the problems of the current lead in terms of insulation, sealing, low temperature resistance, high voltage resistance.

Description

technical field [0001] The invention belongs to the technical field of low-temperature superconductivity, and in particular relates to a current lead insulation and sealing device. Background technique [0002] Generally speaking, the current lead leads the current from the power supply at the room temperature to the superconducting device at the low temperature, and acts as a bridge and a bond. Due to the relatively large temperature difference between the two ends, the heat leakage of the current leads is considerable, and the stable operation and maintenance costs of the superconducting power device are relatively high. Current lead design is an important research topic in the field of superconducting power technology. [0003] When the current lead passes through the liquid nitrogen Dewar, it needs to meet the technical requirements of electrical insulation, airtightness and air pressure resistance at the same time. The problems of high voltage insulation, gas sealing,...

Claims

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Application Information

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IPC IPC(8): H01F6/06H01F6/00
Inventor 李振明张宏杰黄晓华丘明
Owner CHINA ELECTRIC POWER RES INST
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