JPH0181404U

JPH0181404U -

Info

Publication number: JPH0181404U
Application number: JP1987171447U
Authority: JP
Priority date: 1987-11-10
Filing date: 1987-11-10
Publication date: 1989-05-31

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例の説明図、第２
図は第１図のＡ―Ａ矢視図、第３図は第１図のＢ
―Ｂ矢視図、第４図は本考案の第２の実施例の説
明図、第５図は第４図のＣ―Ｃ矢視図、第６図は
第４図のＤ―Ｄ矢視図、第７図は第４図の変形態
様の説明図、第８図は第７図のＥ―Ｅ矢視図、第
９図は第７図のＦ―Ｆ矢視図、第１０図はボイラ
全体概略説明図、第１１図及び第１２図は従来技
術の説明図、第１３図は第１１図及び第１２図の
Ｇ―Ｇ矢視図である。図中ｅはボイラ炉壁、１は水管、２はフイン、
３はフイン終端部、７はプロテクタ部材、１２は
緩衝部、１３は湾曲面（湾曲部）を示す。 Figure 1 is an explanatory diagram of the first embodiment of the present invention;
The figure is the A-A arrow view in Figure 1, and the figure 3 is B in Figure 1.
-B arrow view, Figure 4 is an explanatory diagram of the second embodiment of the present invention, Figure 5 is a CC arrow view in Figure 4, and Figure 6 is a D-D arrow view in Figure 4. Figure 7 is an explanatory diagram of a modified form of Figure 4, Figure 8 is a view taken along the line E--E in Figure 7, Figure 9 is a view taken along line F-F in Figure 7, and Figure 10 is FIG. 11 and FIG. 12 are explanatory diagrams of the prior art, and FIG. 13 is a view taken along the line GG in FIGS. 11 and 12. In the figure, e is the boiler furnace wall, 1 is the water pipe, 2 is the fin,
3 is a fin end portion, 7 is a protector member, 12 is a buffer portion, and 13 is a curved surface (curved portion).

Claims

[Scope of utility model registration request]

In the fin end structure in which the furnace wall is formed by connecting a plurality of water tubes and a plurality of fins in an alternate planar manner, and the fins are arranged at positions connecting the centers of adjacent water tubes in a cross section of the water tubes, A protector member that is connected to the fin near the end of the fin and connected to the longitudinal outer circumferential surface of the water pipe and has a curved portion in the cross section, or a protector member that is arranged so that the fin end is shifted from a line connecting the centers of the water pipes. A fin end structure for a boiler furnace wall tube, characterized in that it is provided with a water tube crack prevention structure consisting of at least one curved buffer connected to the outer peripheral surface of the water tube.