Efficient thermal joints for connecting current leads to a cryoc

Details Efficient thermal joints for connecting current leads to a cryoc Efficient thermal joints for connecting current leads to a cryoc

1988-07-05

1989-10-24

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

With cooling or fluid feeding, circulating or distributing

62 511, F25B 1900

Patent

active

048764132

ABSTRACT:
A thermally efficient electrically insulating joint operable at liquid nitrogen temperatures and below is provided for connecting a current lead to a cryocooler heat station. The joint includes clamping means, two indium sheets and a ceramic spacer. The ceramic spacer material can be either beryllia or alumina. The spacer has two faces situated opposite one another. Each of the indium sheets contacts a respective one of the faces. The ceramic spacer with the indium sheets on either side is situated between the current lead and the cryocooler heat station. The clamp means urge the cryocooler heat station and the lead together with sufficient force to cause the indium layers to conform to the surface with which they are in contact.

REFERENCES:
patent: 4633682 (1987-01-01), Laskaris
patent: 4667486 (1987-05-01), Miller et al.

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