JPS61198804U

JPS61198804U -

Info

Publication number: JPS61198804U
Application number: JP7837285U
Authority: JP
Priority date: 1985-05-24
Filing date: 1985-05-24
Publication date: 1986-12-12

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例における多管式貫流
ボイラーの縦断面図、第２図は第１図の横断面図
、第３図イは一部拡大側面図、第３図ロは第３図
イの―断面拡大図、第４図、第５図（第４図
の横断面図）は従来の実施例の説明図、第６図、
第７図（第６図の横断面図）は従来の他の実施例
の説明図である。１は上部管寄せ、２は下部管寄せ、３は内方の
環状水管列、４は外方の環状水管列、５は燃焼ガ
ス通路、６は燃焼装置、７は燃焼室、８はボイラ
ー外壁、９は開口部、１０は開口部、１１は煙道
、１２はヒレ、１３はスリツト。 Fig. 1 is a longitudinal cross-sectional view of a multi-tubular once-through boiler according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 A is a partially enlarged side view, and Fig. 3 B is a partially enlarged side view. Figure 3A is an enlarged cross-sectional view, Figures 4 and 5 (cross-sectional view of Figure 4) are explanatory diagrams of the conventional embodiment, Figure 6,
FIG. 7 (a cross-sectional view of FIG. 6) is an explanatory diagram of another conventional embodiment. 1 is an upper header, 2 is a lower header, 3 is an inner annular water tube row, 4 is an outer annular water tube row, 5 is a combustion gas passage, 6 is a combustion device, 7 is a combustion chamber, 8 is an outer wall of the boiler , 9 is an opening, 10 is an opening, 11 is a flue, 12 is a fin, and 13 is a slit.

Claims

[Claims for Utility Model Registration] (1) The upper header 1 and the lower header 2 are connected by a number of water pipes, and these water pipes consist of two concentric annular water pipe rows 3 and 4 spaced apart in the radial direction. and forming a combustion chamber 7 within the inner annular water tube row 3,
These inner and outer water tube rows 3 and 4 form an annular combustion gas passage 5, the inner water tube row 3 is provided with an opening 9 to the outer annular combustion gas passage 5, and the outer water tube row 4 is provided with an opening 9 to the outer annular combustion gas passage 5. is a multi-tubular once-through boiler provided with an opening 10 to a flue 11, characterized in that a heat transfer fin 12 is provided below the water level W of the water tube. Thermal surface structure. (2) Registration of a utility model characterized in that the heat transfer fin is a flat fin, provided parallel to the flow of combustion gas, and arranged in multiple stages in the axial direction of the water pipes 3 and 4. A heat transfer surface structure of a multi-tubular once-through boiler according to claim 1. (3) Utility model registration claim 2, characterized in that an appropriate number of slits 13 are provided so that the heat transfer fins substantially intersect with the combustion gas flow.
Heat transfer surface structure of the multi-tubular once-through boiler described in Section 1. (4) Heat transfer in a multi-tubular once-through boiler according to claim 1, 2 or 3 of the utility model registration claim, characterized in that the flue 11 is provided at the lower part of the boiler outer wall 8. Surface structure.