Title:
PIPE JOINT AND PIPING STRUCTURE
Document Type and Number:
Japanese Patent JP2021080937
Kind Code:
A
Abstract:
To provide a pipe joint which is enhanced in productivity, and high in heat insulation performance, and a piping structure.SOLUTION: A pipe joint 2 for connecting a heat insulation pipe 3 which is formed with a coating layer 7 composed of a foaming resin to an external periphery of a resin pipe 6 comprises: an outer pipe part 15 inserted with the heat insulation pipe 3, and comprising an opening part having an inside diameter larger than an outside diameter of the heat insulation pipe 3; an inner pipe part 16 which is arranged in the outer pipe part 15 with an interval between an inner face of the outer pipe part 15 and itself; and a spacer part 12 for connecting the inner pipe part 16 and the outer pipe part 15, and forming a hollow layer 36 together with the inner pipe part 16 and the outer pipe part 15 between the inner pipe part 16 and the outer pipe part 15. An annular inner face cutoff part 12a contacting with any of an inner face, an outer face or an end part of the inner pipe part 16 over an entire periphery is arranged inside the spacer part 12, and an annular outer face cutoff part 12b contacting with an entire periphery of the inner face of the outer pipe part 15 is arranged outside the spacer part 12.SELECTED DRAWING: Figure 1
Inventors:
HANAKI HIROAKI
MIDORIKAWA TATSUYA
MIDORIKAWA TATSUYA
Application Number:
JP2019206259A
Publication Date:
May 27, 2021
Filing Date:
November 14, 2019
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
F16L59/18; F16L47/06
Attorney, Agent or Firm:
Nishizawa Kazumi
Yuichiro Kawagoe
Makiko Otsuki
Hiroshi Yamaguchi
Yuichiro Kawagoe
Makiko Otsuki
Hiroshi Yamaguchi