CN217057482U

CN217057482U - External exhaust-heat boiler of coiled pipe fillet weld

Info

Publication number: CN217057482U
Application number: CN202220474244.3U
Authority: CN
Inventors: 邓有为; 张语琪; 翁小平; 姚程良; 王继东; 李邦玉; 舒强
Original assignee: Sichuan Donghua Boiler Engineering Technology Co ltd
Current assignee: Sichuan Donghua Boiler Engineering Technology Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-26
Anticipated expiration: 2032-03-07

Abstract

The utility model provides an external exhaust-heat boiler of coiled pipe fillet weld, is including carrying out the evaporation portion of high-efficient heat transfer, and the evaporation portion includes a plurality of evaporating pipes, the fixed coiled pipe of the stove inboard of evaporating pipe, the first comb shape closing plate of coiled pipe fixed connection, first comb shape closing plate welding second comb shape closing plate, the welding seam between first comb shape closing plate welding second comb shape closing plate is located between the two adjacent evaporating pipes. The utility model discloses has following effect: the leakage point is easy to find, and the evaporating pipe is convenient to repair and replace.

Description

External exhaust-heat boiler of coiled pipe fillet weld

Technical Field

The utility model relates to a waste heat boiler especially relates to an external waste heat boiler of coiled pipe fillet weld.

Background

The waste heat boiler is used as a device for recovering heat of high-temperature gas, and is widely applied to the industries of chemical industry, building materials, metallurgy, coking and the like. The water is heated by high-temperature waste gas, so that the heat is recovered, and the aim of reducing energy consumption is fulfilled.

CN201547745U provides a module combined type waste heat boiler for submerged arc furnace, which comprises a waste heat boiler component and a waste heat boiler platform, wherein the waste heat boiler component is arranged on the waste heat boiler platform, the waste heat boiler component comprises a flue gas inlet smoke box, a superheater module group and a preheater module combined flue gas outlet smoke box which are sequentially connected from left to right, and a steam bag component is arranged on the upper parts of the superheater module group, the evaporator module group and the preheater module group. In the prior art, a welding seam is arranged on the inner side of a furnace, and needs to be drilled into a hearth after the furnace is shut down and cold cut, a leakage point is searched, and a pipe can be repaired or replaced after the water-cooled wall pipe is cut after the leakage point is found.

The above prior art has the following problems: leakage points are not easy to find, and the water wall tube is not easy to repair and replace.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an external exhaust-heat boiler of coiled pipe fillet weld to solve: the leakage point is not easy to find, and the water wall tube is not easy to repair and replace.

In order to achieve the above purpose, the specific technical solution of the present invention is as follows:

the utility model provides an external waste heat boiler of coiled pipe fillet weld is including carrying out the evaporation plant of high-efficient heat transfer, and the evaporation plant includes the evaporating pipe, and the stove inboard of evaporating pipe is fixed with the coiled pipe, the first comb shape closing plate of coiled pipe fixed connection, first comb shape closing plate welding second comb shape closing plate, the welding seam between first comb shape closing plate and the second comb shape closing plate is located between two adjacent evaporating pipes.

Still further, the first comb seal plate and the second comb seal plate are both parallel to the evaporator tube.

Furthermore, the first comb-shaped sealing plate is welded at one end of the side plate, the side plate is perpendicular to the first comb-shaped sealing plate, the other end of the side plate is welded with the fins, and the side plate is located in the furnace and is convenient for sealing the side face of the coiled pipe.

Furthermore, the fins are fixed between two adjacent evaporation tubes, and the fins are also connected with a sealing cover shell which is positioned in the furnace.

Furthermore, the device also comprises a furnace cylinder, wherein the furnace cylinder is connected with one end of a downcomer for guiding water flow, and the other end of the downcomer is connected with a lower collection box; the lower part of the lower collection box is connected with an ash bucket.

Furthermore, a water-cooling wall is connected above the lower header, a flue inlet is formed in the front side face of the water-cooling wall, and a flue outlet is formed in the rear side face of the water-cooling wall.

Still further, the evaporator tube sections are evaporator tube bundles.

Furthermore, one end of the evaporation tube bundle is connected with the lower header, the other end of the evaporation tube bundle is connected with the upper header, and the upper header is connected with the furnace barrel, so that water circulation is facilitated.

Furthermore, an overheating component is connected above the upper header.

Further, the serpentine tube is wavy.

To sum up, the utility model discloses an external exhaust-heat boiler of coiled pipe fillet weld has following effect: the leakage point is easy to find, and the evaporating pipe is convenient to repair and replace.

Drawings

Fig. 1 is a sectional view showing a detailed structure of the first embodiment;

FIG. 2 is a schematic cross-sectional view A _ A of the structure of the first embodiment;

FIG. 3 is an enlarged view of a portion I of the first embodiment;

FIG. 4 is a partial enlarged view of II of the first embodiment;

FIG. 5 is a cross-sectional view of B _ B of the first embodiment I;

FIG. 6 is a schematic view of the first embodiment in the direction of I C;

FIG. 7 is a schematic view of the first embodiment in the direction D of II;

FIG. 8 is an assembly drawing of I and II of the first embodiment;

FIG. 9 is a specific configuration diagram of the serpentine tube of the first embodiment;

FIG. 10 is a schematic view showing a detailed structure of a serpentine tube of the second embodiment;

FIG. 11 is a schematic view showing a detailed structure of a serpentine tube of the third embodiment;

FIG. 12 is a schematic view showing a detailed structure of a serpentine tube of the fourth embodiment;

the symbols in the figure illustrate: 1. a furnace barrel; 2. a flue inlet; 3. a water-cooled wall; 4. a superheating component; 5. an evaporator tube bundle; 6. a down pipe; 7. a flue outlet; 8. an ash hopper; 9. welding; 10. sealing the housing; 11. an evaporation tube; 12. a serpentine tube; 13. a side plate; 14. a first comb-shaped sealing plate; 15. an upper header; 16. a fin; 17. a second comb-shaped sealing plate; 18. And a lower header.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the technical solution of the present invention will be further described by the following embodiments with reference to the accompanying drawings.

An external waste heat boiler for a serpentine pipe fillet weld comprises an evaporation part for efficient heat transfer, wherein the evaporation part comprises a plurality of evaporation pipes 11 which are parallel to each other, a serpentine pipe 12 is fixed on the inner side of the evaporation pipe 11, the serpentine pipe 12 is fixedly connected with a first comb-shaped sealing plate 14, the first comb-shaped sealing plate 14 is welded with a second comb-shaped sealing plate 17, a welding seam 9 between the first comb-shaped sealing plate 14 and the second comb-shaped sealing plate 17 is located between two adjacent evaporation pipes 11, so that the welding seam 9 is exposed on the outer side of the boiler, and the evaporation pipes are convenient to overhaul and replace.

When in use, if the welding seam leaks, the heat-insulating layer (outside the furnace) can be detached, and the welding seam or the pipe can be directly repaired.

As shown in FIGS. 1-8, the present invention provides a first embodiment. A kind of coil pipe fillet weld external exhaust-heat boiler, including the furnace tube 1, the furnace tube 1 connects one end of the downcomer 6 which guides the rivers, another end of the downcomer 6 connects the lower header 18; the ash hopper 8 is connected below the lower collection box 18, so that ash slag can be cooled and collected conveniently; the upper part of the lower header 18 is connected with the water wall 3, the front side surface 19 of the water wall 3 is provided with a flue inlet 2, and the rear side surface 20 of the water wall 3 is provided with a flue outlet 7, so that the smoke can enter and exit conveniently. The water-cooled wall 3 comprises an evaporation part, the evaporation pipe part is an evaporation pipe bundle 5, one end of the evaporation pipe bundle 5 is connected with a lower header 18, the other end of the evaporation pipe bundle 5 is connected with an upper header 15, and the upper header 15 is connected with the furnace tube 1, so that water circulation is facilitated. An overheating component 4 is also connected above the upper header 15 and used for forming stable temperature. The evaporation tube bundle 5 comprises evaporation tubes 11, wherein wave-shaped serpentine tubes 12 are welded on the inner sides of the evaporation tubes 11 as shown in fig. 9, and as shown in fig. 3, 5 and 6, the serpentine tubes 12 are welded with first comb-shaped sealing plates 14, the first comb-shaped sealing plates 14 are welded with second comb-shaped sealing plates 17, and the first comb-shaped sealing plates 14 and the second comb-shaped sealing plates 17 are parallel to the evaporation tubes 11. The welding seam 9 of the first comb-shaped sealing plate 14 welded between the second comb-shaped sealing plates 17 is positioned between the two evaporation tubes 11, so that the welding seam 9 is positioned outside the furnace, and the evaporation tubes are convenient to overhaul and replace. The first comb-shaped sealing plate 14 is welded at one end of the side plate 13, the side plate 13 is perpendicular to the first comb-shaped sealing plate 14, and the other end of the side plate 13 is welded with the fin 16, so that the side face of the serpentine pipe 12 is sealed conveniently. As shown in fig. 4 and 7, the fins 16 are fixed between two adjacent evaporation tubes 11, and the fins 16 are also connected with the sealing cover 10, so as to reduce the air leakage of the boiler.

When in use, pyrite is added into a boiler for reaction. If the welding seam leaks, the water-cooled wall pipe is drilled into the hearth without stopping the furnace and performing cold cutting, a leakage point is searched, and the pipe can be repaired or replaced after the water-cooled wall pipe is cut after the leakage point is found; only the heat-insulating layer is needed to be disassembled (outside the furnace), and the weld seam or the pipe is directly repaired.

The second embodiment of the present invention is shown in fig. 10, and on the basis of the first embodiment, the serpentine pipe is "Σ" shaped, so that the welding seam 9 is more conveniently located outside the furnace.

In the third embodiment of the present invention, as shown in fig. 11, based on the first embodiment, the serpentine tube is "C" shaped, so that the weld 9 is more conveniently located outside the furnace.

In a fourth embodiment of the present invention, as shown in fig. 12, on the basis of the first embodiment, the serpentine pipe is "L" shaped, so that the welding seam 9 is more conveniently located outside the furnace.

It is to be understood that the present invention has been described with reference to certain embodiments and that various changes or equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention as defined by the appended claims. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides an external exhaust-heat boiler of coiled pipe fillet weld, its characterized in that, includes the evaporation portion, and the evaporation portion includes a plurality of evaporating pipes (11), and the stove inboard of evaporating pipe (11) is fixed with coiled pipe (12), the first comb shape closing plate (14) of coiled pipe (12) fixed connection, first comb shape closing plate (14) welding second comb shape closing plate (17), welding seam (9) between first comb shape closing plate (14) and the second comb shape closing plate (17) are located between two adjacent evaporating pipes (11).

2. The external serpentine fillet weld waste heat boiler as set forth in claim 1, wherein the first comb seal plate (14) and the second comb seal plate (17) are parallel to the evaporator tube (11).

3. The external serpentine fillet weld waste heat boiler as recited in claim 1, wherein the first comb-shaped sealing plate (14) is welded to one end of the side plate (13), the side plate (13) is perpendicular to the first comb-shaped sealing plate (14), the other end of the side plate (13) is welded to the fin (16), and the side plate (13) is located in the boiler.

4. The external waste heat boiler with the serpentine pipe fillet weld is characterized in that the fins (16) are fixed between two adjacent evaporation pipes (11), the fins (16) are connected with the sealed housing (10), and the sealed housing (10) is positioned in the boiler.

5. The external waste heat boiler for the serpentine pipe fillet weld is characterized by further comprising a furnace barrel (1), wherein the furnace barrel (1) is connected with one end of a down pipe (6) for guiding water flow, the other end of the down pipe (6) is connected with a lower collecting box (18), and an ash bucket (8) is connected below the lower collecting box (18).

6. The external waste heat boiler with the serpentine pipe fillet weld is characterized in that a water wall (3) is connected above the lower header (18), a flue inlet (2) is formed in the front side surface (19) of the water wall (3), and a flue outlet (7) is formed in the rear side surface (20) of the water wall (3).

7. The external waste heat boiler with the serpentine pipe fillet weld is characterized in that the evaporation part is an evaporation pipe bundle (5).

8. The external serpentine fillet weld waste heat boiler as claimed in claim 7, characterized in that one end of the evaporator tube bundle (5) is connected with the lower header (18), the other end of the evaporator tube bundle (5) is connected with the upper header (15), and the upper header (15) is connected with the boiler barrel (1).

9. The external waste heat boiler for the serpentine pipe fillet weld is characterized in that the overheating component (4) is connected above the upper header (15).

10. The external serpentine fillet weld waste heat boiler as set forth in claim 1, wherein the serpentine (12) is corrugated.