JPS62192091U

JPS62192091U -

Info

Publication number: JPS62192091U
Application number: JP7749786U
Authority: JP
Priority date: 1986-05-22
Filing date: 1986-05-22
Publication date: 1987-12-07

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す断面図、第２図
は従来例を示す概略断面図、第３図は第２図のＡ
部拡大図、第４図は第３図のＢ―Ｂ矢視図、第５
図は第２図のＣ部拡大図である。５は内管管板、１４は嵌挿孔、１６はスタブ部
、２０は２重伝熱管、２１は外管、２１ａは外管
、２２は内管を示す。 Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a schematic sectional view showing a conventional example, and Fig. 3 is A of Fig. 2.
An enlarged view of the part, Figure 4 is a BB arrow view of Figure 3, Figure 5
The figure is an enlarged view of section C in FIG. 2. 5 is an inner tube tube plate, 14 is a fitting hole, 16 is a stub portion, 20 is a double heat exchanger tube, 21 is an outer tube, 21a is an outer tube, and 22 is an inner tube.

Claims

[Scope of utility model registration request]

The heat exchanger tube is a double tube, inserted into the inner tube plate and outer tube plate that define the intermediate fluid plenum, and liquid sodium is flowed outside the heat exchanger tube and water is flowed inside the heat exchanger tube to generate steam. In a double pipe steam generator, the outer pipe is cut off so that at least one end of the double pipe is exposed to the intermediate fluid plenum, the tip of the outer pipe is welded to the outer pipe tube plate, and the inner pipe is removed. A tube-tube plate structure of a double-pipe steam generator, characterized in that a cylindrical member having the same dimensions as the inner and outer diameters of the outer pipe is welded to the inner pipe tube plate, and sheet welding is performed between the inner pipe and the cylindrical member.