BEND PORTION OF HEAT INSULATION MULTIPLE PIPE FOR SUPERCONDUCTING TRANSMISSION

WIPO Patent Application WO/2008/056811

A1

Bend portion of a heat insulation multiple pipe for superconducting transmission by which heat insulation efficiency can be ensured by preventing contact of an inner pipe with an outer pipe during cooling contraction, and piping work can be carried out easily and inexpensively. In the bend portion (200) being connected with the straight pipe section (100) of a heat insulation multiple pipe for superconducting transmission in order to alter the piping direction, the inner pipe (7) and the outer pipe (6) in the bend portion are connected, respectively, with the inner pipe (2) and the outer pipe (1) in the straight pipe section on a one-to-one basis, the outside diameter of the inner pipe in the bend portion is identical to that in the straight pipe section, and the outside diameter of the outer pipe in the bend portion is larger than the outside diameter of the outer pipe to be connected in the straight pipe section.

ISHIGURO YASUHIDE (JP)
KAWABATA YOSHIKAZU (JP)
KUSAKA SHUICHI (JP)
ITADANI SUSUMU (JP)
YAMAGUCHI SATARO (JP)

PCT/JP2007/072039

May 15, 2008

November 07, 2007

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JFE STEEL CORP (JP)
ISHIGURO YASUHIDE (JP)
KAWABATA YOSHIKAZU (JP)
KUSAKA SHUICHI (JP)
ITADANI SUSUMU (JP)
YAMAGUCHI SATARO (JP)

F16L59/22; F16L59/06

JPS512283Y1	1976-01-23
JPS5445207Y2	1979-12-25
JPS6062698U	1985-05-01
JPH053200U	1993-01-19
JPS5794780U	1982-06-10

OCHIAI, Kenichiro (JFE TECHNO-RESEARCH CORPORATION7th Floor Yanagiya Building,1-10, Nihonbashi 2-chom, Chuo-ku Tokyo 27, JP)

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