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Title: Low heat-leak cryogenic envelope

Abstract

A plurality of cryogenic envelope sections are joined together to form a power transmission line. Each of the sections is comprised of inner and outer tubes having multilayer metalized plastic spirally wrapped within a vacuum chamber formed between the inner and outer tubes. A refrigeration tube traverses the vacuum chamber, but exits one section and enters another through thermal standoffs for reducing heat-leak from the outer tube to the refrigeration tube. The refrigeration tube passes through a spirally wrapped shield within each section's vacuum chamber in a manner so that the refrigeration tube is in close thermal contact with the shield, but is nevertheless slideable with respect thereto.

Inventors:
 [1]
  1. Boulder, CO
Issue Date:
OSTI Identifier:
862670
Patent Number(s):
3986341
Application Number:
05/569,473
Assignee:
Cryogenic Technology, Inc. (Denver, CO)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16L - PIPES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
heat-leak; cryogenic; envelope; plurality; sections; joined; form; power; transmission; line; comprised; inner; outer; tubes; multilayer; metalized; plastic; spirally; wrapped; vacuum; chamber; formed; refrigeration; tube; traverses; exits; section; enters; thermal; standoffs; reducing; passes; shield; manner; close; contact; nevertheless; slideable; respect; thereto; refrigeration tube; power transmission; vacuum chamber; transmission line; outer tube; thermal contact; outer tubes; respect thereto; reducing heat; chamber formed; cryogenic envelope; multilayer metal; /62/138/174/285/505/

Citation Formats

DeHaan, James R. Low heat-leak cryogenic envelope. United States: N. p., 1976. Web.
DeHaan, James R. Low heat-leak cryogenic envelope. United States.
DeHaan, James R. Tue . "Low heat-leak cryogenic envelope". United States. https://www.osti.gov/servlets/purl/862670.
@article{osti_862670,
title = {Low heat-leak cryogenic envelope},
author = {DeHaan, James R},
abstractNote = {A plurality of cryogenic envelope sections are joined together to form a power transmission line. Each of the sections is comprised of inner and outer tubes having multilayer metalized plastic spirally wrapped within a vacuum chamber formed between the inner and outer tubes. A refrigeration tube traverses the vacuum chamber, but exits one section and enters another through thermal standoffs for reducing heat-leak from the outer tube to the refrigeration tube. The refrigeration tube passes through a spirally wrapped shield within each section's vacuum chamber in a manner so that the refrigeration tube is in close thermal contact with the shield, but is nevertheless slideable with respect thereto.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {10}
}

Patent:

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