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Multilayer insulation blanket, fabricating apparatus and method

Patent ·
OSTI ID:868451
 [1];  [2];  [3]
  1. Oak Lawn, IL
  2. Downers Grove, IL
  3. Aurora, IL
+ Show Author Affiliations

An improved multilayer insulation blanket for insulating cryogenic structures operating at very low temperatures is disclosed. An apparatus and method for fabricating the improved blanket are also disclosed. In the improved blanket, each successive layer of insulating material is greater in length and width than the preceding layer so as to accommodate thermal contraction of the layers closest to the cryogenic structure. The fabricating apparatus has a rotatable cylindrical mandrel having an outer surface of fixed radius that is substantially arcuate, preferably convex, in cross-section. The method of fabricating the improved blanket comprises (a) winding a continuous sheet of thermally reflective material around the circumference of the mandrel to form multiple layers, (b) binding the layers along two lines substantially parallel to the edges of the circumference of the mandrel, (c) cutting the layers along a line parallel to the axle of the mandrel, and (d) removing the bound layers from the mandrel.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
DOE Contract Number:
AC02-76CH03000
Assignee:
Universities Research Association, Inc. (Washington, DC)
Patent Number(s):
US 5143770
OSTI ID:
868451
Country of Publication:
United States
Language:
English

References (10)

Outgassing rate of multilayer insulation materials at ambient temperature journal May 1980
Multiple layer insulation forcryogenic applications journal March 1961
Systematic study to reduce the effects of cracks in multilayer insulation Part 2: experimental results journal June 1987
Thermal Performance of Candidate SSC Magnet Thermal Insulation Systems book January 1988
Radiative and conductive heat transmission through superinsulations — experimental results for aluminium coated plastic foils journal July 1973
Multiple-Layer Insulation book January 1960
Engineering Aspects of Heat Transfer in Multilayer Reflective Insulation and Performance of NRC Insulation book January 1960
Measuring the Gas Pressure within a High-Performance Insulation Blanket book January 1995
Thermal Performance of Tank Applied Multilayer Insulations book January 1967
The Surface Emittance of Vacuum-Metallized Polyester Film book January 1967

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