JPS5962397U

JPS5962397U - Heat retention structure

Info

Publication number: JPS5962397U
Application number: JP1982157316U
Authority: JP
Inventors: 金久保　博; 宮武　稔明
Original assignee: 株式会社東芝; 日本原子力事業株式会社; 動力炉・核燃料開発事業団
Priority date: 1982-10-18
Filing date: 1982-10-18
Publication date: 1984-04-24
Also published as: JPH018800Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図ないし第４図は従来例を示すもので、第１図は高
速増殖炉の原子炉冷却系の概略系統図、第２図は二次主
配管の保温構造を示す長手方向の一部断面図、第３図は
第２図の■−■一部断面図　　　　′４図は別の従来例
を示す断面図、第５図ないし第７図は本考案の一実施例
を示すもので、第５図は高速増殖炉の原子炉冷却系の概
略系統図、第６図は二次主配管の保温構造を示す長手方
向の一部断面図、第７図は第６図の■−■一部断面図る
。５６・・・−法主配管、６０・・・二次主配管、６６・
・・内側包囲管、６７・・・保温材、６８・・・保温層
、６９・・・外側包囲管、６９Ａ・・・流出口。Figures 1 to 4 show conventional examples. Figure 1 is a schematic system diagram of the reactor cooling system of a fast breeder reactor, and Figure 2 is a longitudinal section showing the heat insulation structure of the secondary main piping. 3 is a partial sectional view taken from ■--■ in FIG. 2; Figure 4 is a sectional view showing another conventional example; and Figures 5 to 7 show an embodiment of the present invention. Figure 5 is a schematic system diagram of the reactor cooling system of a fast breeder reactor, Figure 6 is a partial cross-sectional view in the longitudinal direction showing the heat insulation structure of the secondary main piping, and Figure 7 is Partial cross section. 56...-main piping, 60...secondary main piping, 66.
... Inner surrounding tube, 67... Heat insulating material, 68... Heat retaining layer, 69... Outer surrounding tube, 69A... Outlet.

Claims

[Scope of utility model registration request]

(1) An inner enveloping pipe formed by bending a plate material into a cylindrical shape and surrounding the outer periphery of the pipe with a gap between the pipe and the inner enclosing pipe formed by bending a plate material into a cylindrical shape. an outer envelope tube that surrounds the outer periphery of the tube with a gap between the tube and the inner envelope tube; and a heat insulation layer formed by inserting a plurality of heat insulators in parallel between the inner envelope tube and the outer envelope tube. and between the above plurality of insulation materials,
A filler that is filled between the heat insulator and the inner envelope tube and between the heat insulator and the outer envelope tube and has better fluid permeability than the heat insulator;
A heat-retaining structure comprising: an outlet provided in the outer envelope pipe to allow fluid leaked from the pipe to flow out.

(2) Claim 1 of the above-mentioned utility model registration, characterized in that the upper filling material is made of stainless steel and wool-like.
Heat retention structure as described in section.