CN213746682U - Novel convection heat exchange type corner tube boiler - Google Patents

Abstract

The utility model discloses a novel convection heat transfer formula corner tube boiler, including boiler tower module, boiler tower module left side is equipped with anterior diaphragm type wall, boiler tower module middle part is equipped with middle part diaphragm type wall, boiler tower module right side is equipped with rear portion diaphragm type wall, boiler tower module front side, the rear side is equipped with left side diaphragm type wall and right side diaphragm type wall respectively, diaphragm type water-cooling furnace and the down flue upper portion relative position intercommunication of water-cooling, boiler tower module top relative position is equipped with the steam pocket, the inside relative position of the down flue of water-cooling is equipped with the novel convection heating surface in upper portion, the novel convection heating surface in middle part, the novel convection heating surface in lower part, boiler tower module right side relative position is equipped with smoke treatment tower module, the down flue bottom relative position of water-cooling communicates with the up flue bottom relative position. The utility model has the advantages that: the structure is simplified, the maintenance is convenient compared with the traditional boiler, and the service life is prolonged.

Description

Novel convection heat exchange type corner tube boiler

Technical Field

The utility model belongs to the technical field of the angle pipe boiler, concretely relates to novel convection heat transfer formula angle pipe boiler.

Background

Generally, a flag-shaped pipe is adopted for a convection heating surface of a tail passage of a traditional corner tube boiler, namely, a hole is formed in a water-cooled wall, and the flag-shaped pipe is welded on a pipe hole of the water-cooled wall; the flag-shaped pipe and the water wall pipe belong to heating surface pipes which are connected in parallel and ascend, a group of ascending pipes and descending pipes are shared, the reliability of water circulation is poor, especially when the load fluctuation of the boiler is large, the potential safety hazards of water robbing and water shortage exist, and the pipes are easy to explode; in addition, all welded junctions of the flag-shaped pipes are located in the flue, maintenance and replacement are very troublesome, and once any pipe has a problem, adjacent rows of pipes need to be removed together for maintenance, so people always find a novel boiler.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel convection heat transfer formula angle pipe boiler has simplified the structure, compares the convenient maintenance of traditional boiler, and life increases.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a novel convection heat exchange type corner tube boiler comprises a boiler tower module, wherein a front membrane type wall is arranged on the left side of the boiler tower module, a middle membrane type wall is arranged in the middle of the boiler tower module, a rear membrane type wall is arranged on the right side of the boiler tower module, a left membrane type wall and a right membrane type wall are respectively arranged on the front side and the rear side of the boiler tower module, a membrane type water-cooling hearth is formed between the front membrane type wall, the middle membrane type wall, the left membrane type wall and the right membrane type wall, a water-cooling descending flue is formed between the middle membrane type wall, the rear membrane type wall, the left membrane type wall and the right membrane type wall, the membrane type water-cooling hearth is communicated with the upper part of the water-cooling descending flue in a relative position, a front membrane type wall lower collecting box is arranged at the bottom of the front membrane type wall, a middle membrane type wall lower collecting box is arranged at the bottom of the middle membrane type wall, a left side membrane type wall lower collecting box is arranged at the bottom of the right membrane type wall, a rear membrane type wall lower collecting box is arranged at the bottom of the rear membrane type wall, the relative position of the top of the boiler tower module is provided with a steam pocket, the steam pocket is connected with a novel convection heating surface air duct rightwards, the bottom of the steam pocket is provided with a plurality of novel convection heating surface descending tubes downwards, the right side of the novel convection heating surface air duct is provided with a plurality of novel convection heating surface descending tubes downwards, the relative position of the inner part of the water cooling down flue is provided with an upper novel convection heating surface, a middle novel convection heating surface and a lower novel convection heating surface, the structures of the upper novel convection heating surface, the middle novel convection heating surface and the lower novel convection heating surface are similar, the bottom of the upper novel convection heating surface is provided with a novel convection tube bundle lower collection box, the top of the upper novel convection heating surface is communicated with the novel convection heating surface air duct, the novel convection tube bundle lower collection box, the rear film type wall lower collection box, the middle film type wall lower collection box are communicated with the novel convection heating surface descending tubes on the right side, the front film type wall lower collection box is communicated with the novel convection heating surface descending tubes on the left side, the left side of a left film-type wall lower header and the left side of a right film-type wall lower header are communicated with a left novel convection heating surface downcomer, the right side of the left film-type wall lower header and the right side of the right film-type wall lower header are communicated with a right novel convection heating surface downcomer, a smoke treatment tower module is arranged at the right side relative position of the boiler tower module and is of a hollow structure, an ascending flue is arranged inside the smoke treatment tower module, a coal economizer, an air preheater and a flue gas outlet are sequentially arranged inside the smoke treatment tower module from bottom to top, and the bottom relative position of the water-cooling descending flue is communicated with the bottom relative position of the ascending flue.

Furthermore, a fire grate is arranged at the opposite position of the bottom of the inner side of the membrane type water-cooling hearth.

Furthermore, a protective sleeve is arranged at the position of the upper novel convection heating surface penetrating through the rear membrane wall.

Furthermore, a trapezoid expansion joint for sealing is arranged on the outer side of the protective sleeve.

Further, the outside of boiler tower module is equipped with steel skeleton, and the outside of smog treatment tower module is equipped with steel skeleton.

Compared with the prior art, the beneficial effects of the utility model are that:

in the utility model, by adopting the single-drum horizontal natural circulation water pipe boiler, the water circulation of the boiler is natural circulation, the whole trend of the flue is arranged in an N shape, the boiler body adopts a self-bearing structure of an angle pipe boiler, the tail part adopts a frame supporting structure, and the peripheries of the membrane type water cooling hearth and the water cooling down flue are all-welded membrane type water cooling wall structures, so that the structure is simple, the manufacturing cost is low, and the service life is long; the novel convection heating surface at the upper part is provided with an independent pipeline which is connected with a novel convection heating surface air duct and a novel convection heating surface downcomer to form a water circulation loop independently, and any convection tube bank has a problem, so that the operation of adjacent tube banks is not influenced, and the water circulation is safe and reliable; all welding openings of the novel convection heating surface at the upper part are arranged outside the water-cooling down flue, so that the maintenance, the replacement and the installation are very convenient; the novel convection heating surface on the upper portion is welded with the protective sleeve at the wall penetrating position, the outer portion of the protective sleeve is welded with the trapezoidal expansion joint and sealed with the membrane type water-cooled wall, the sleeve plays a role in protecting the convection tube bundle, the trapezoidal expansion joint plays a role in expansion sealing, and the service life of the device is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the lower novel convection heating surface.

In the figure: 1. the novel smoke treatment tower comprises a grate, 2 a membrane type water-cooled hearth, 3 a water-cooled down flue, 4 an upper novel convection heating surface, 5 a novel convection heating surface air guide pipe, 6 a novel convection heating surface descending pipe, 7 a steam pocket, 8 a protective sleeve, 9 a trapezoidal expansion joint, 10 an ascending flue, 11 an economizer, 12 an air preheater, 13 a smoke outlet, 14 a front membrane type wall lower collection box, 15 a left membrane type wall lower collection box, 16 a novel convection pipe bundle lower collection box, 17 a middle membrane type wall lower collection box, 18 a rear membrane type wall lower collection box, 19 a middle novel convection heating surface, 20 a lower novel convection heating surface, 21 a front membrane type wall, 22 a middle membrane type wall, 23 a rear membrane type wall, 24 a boiler tower module and 25 a smoke treatment tower module.

Detailed Description

Example (b): as shown in fig. 1 and 2, the water-cooled boiler comprises a boiler tower module 24, a front membrane wall 21 is arranged on the left side of the boiler tower module 24, a middle membrane wall 22 is arranged in the middle of the boiler tower module 24, a rear membrane wall 23 is arranged on the right side of the boiler tower module 24, the front and rear sides of the boiler tower module 24 are respectively provided with the left and right membrane walls, a membrane water-cooled hearth 2 is formed among the front membrane wall 21, the middle membrane wall 22, the left membrane wall and the right membrane wall, a water-cooled descending flue 3 is formed among the middle membrane wall 22, the rear membrane wall 23, the left membrane wall and the right membrane wall, the membrane water-cooled hearth 2 is communicated with the upper part of the water-cooled descending flue 3 at a relative position, a front membrane wall lower header 14 is arranged at the bottom of the front membrane wall 21, a middle membrane wall lower header 17 is arranged at the bottom of the middle membrane wall 22, a left and right membrane wall lower headers 15 are arranged at the bottoms of the left and right membrane walls, a rear film type wall lower header 18 is arranged at the bottom of the rear film type wall 23, a steam pocket 7 is arranged at the relative position of the top of a boiler tower module 24, the steam pocket 7 is connected with a novel convection heating surface air duct 5 rightwards, a plurality of novel convection heating surface downcomers 6 are downwards arranged at the bottom of the steam pocket 7, a plurality of novel convection heating surface downcomers 6 are downwards arranged at the right side of the novel convection heating surface air duct 5, an upper novel convection heating surface 4, a middle novel convection heating surface 19, a lower novel convection heating surface 20, an upper novel convection heating surface 4, a middle novel convection heating surface 19 and a lower novel convection heating surface 20 are arranged at the relative position inside a water-cooling down flue 3, a novel convection tube bundle lower header 16 is arranged at the bottom of the upper novel convection heating surface 4, the top of the upper novel convection heating surface 4 is communicated with the novel convection heating surface air duct 5, and a novel convection tube bundle lower header 16, The rear film type wall lower header 18 and the middle film type wall lower header 17 are communicated with a right novel convection heating surface downcomer 6, the front film type wall lower header 14 is communicated with a left novel convection heating surface downcomer 6, the left side of the left and right film type wall lower header 15 is communicated with the left novel convection heating surface downcomer 6, the right side of the left and right film type wall lower header 15 is communicated with the right novel convection heating surface downcomer 6, a smoke treatment tower module 25 is arranged at the right side relative position of a boiler tower module 24, the smoke treatment tower module 25 is of a hollow structure, an ascending flue 10 is arranged inside the smoke treatment tower module 25, the smoke treatment tower module 25 is sequentially provided with a coal economizer 11, an air preheater 12 and a flue gas outlet 13 from bottom to top, and the bottom relative position of the water-cooling descending flue 3 is communicated with the bottom relative position of the ascending flue 10. The opposite position of the bottom in the membrane type water-cooling hearth 2 is provided with a fire grate 1, the upper novel convection heating surface 4 is provided with a protective sleeve 8 at the position of penetrating through the rear membrane type wall 23, the outer side of the protective sleeve 8 is provided with a trapezoid expansion joint 9 for sealing, a steel structure framework is arranged outside the boiler tower module 24, and a steel structure framework is arranged outside the smoke treatment tower module 25.

The working process is as follows: after fuel is fully combusted in the fire grate 1 and the membrane type water-cooled hearth 2, generated high-temperature flue gas enters the water-cooled down flue 3 through a communicating position at the top, the high-temperature flue gas entering the water-cooled down flue 3 flows downwards and sequentially passes through the novel convection heating surface 4 at the upper part, the novel convection heating surface 19 at the middle part and the novel convection heating surface 20 at the lower part, then the high-temperature flue gas enters the up flue 10 through a communicating position at the bottom, the high-temperature flue gas entering the up flue 10 starts to move upwards, and the high-temperature flue gas sequentially passes through the coal economizer 11 and the air preheater 12 in the up flue 10 and then enters environment-friendly equipment such as desulfurization and dust removal at the tail part of a boiler through a flue gas outlet 13; boiler feed water firstly enters an economizer 11, after the economizer 11 is heated, the water enters a steam pocket 7 through a pipeline, the water in the steam pocket 7 respectively enters a front membrane type wall 21, a middle membrane type wall 22, a rear membrane type wall 23, a left side membrane type wall lower collection box 15, a right side membrane type wall lower collection box 16 and a novel convection tube bundle lower collection box 16 through a plurality of novel convection heating surface descending tubes 6, after the water in the steam pocket 7 enters the devices, heat exchange is started to be carried out with the surrounding devices, steam and water temperate substances generated by heat exchange of an upper novel convection heating surface 4, a lower novel convection heating surface 20 and a novel convection heating surface 19 are returned to the steam pocket 7 again through a novel convection heating surface air duct 5 for steam and water separation, saturated steam separated from the steam pocket 7 is directly delivered to a user through a pipeline, and heated water separated from the steam pocket 7 respectively enters a front membrane type wall 21 through a plurality of novel convection heating surface descending tubes 6, The middle membrane wall 22, the rear membrane wall 23, the left and right side membrane wall lower header 15 and the novel convection bank lower header 16 exchange heat to continue the next steam-water circulation.

Claims (5)

1. The utility model provides a novel convection heat transfer formula corner tube boiler which characterized in that: the water-cooling type boiler comprises a boiler tower module (24), wherein a front membrane type wall (21) is arranged on the left side of the boiler tower module (24), a middle membrane type wall (22) is arranged in the middle of the boiler tower module (24), a rear membrane type wall (23) is arranged on the right side of the boiler tower module (24), a left membrane type wall and a right membrane type wall are respectively arranged on the front side and the rear side of the boiler tower module (24), a membrane type water-cooling hearth (2) is formed among the front membrane type wall (21), the middle membrane type wall (22), the left membrane type wall (23) and the right membrane type wall, a water-cooling descending flue (3) is formed among the middle membrane type wall (22), the middle membrane type wall lower collecting box (14) is arranged at the bottom of the front membrane type wall (21), a middle membrane type wall lower collecting box (17) is arranged at the bottom of the middle membrane type wall (22), the novel convection heating surface heat exchange device comprises a left film-type wall, a right film-type wall bottom collecting box (15), a rear film-type wall bottom collecting box (18), a steam pocket (7) arranged at the relative position of the top of a boiler tower module (24), a novel convection heating surface air duct (5) connected to the right of the steam pocket (7), a plurality of novel convection heating surface descending tubes (6) arranged downwards at the bottom of the steam pocket (7), a plurality of novel convection heating surface descending tubes (6) arranged downwards at the right of the novel convection heating surface air duct (5), a novel upper convection heating surface (4), a novel middle convection heating surface (19) and a novel lower convection heating surface (20) arranged at the relative position inside a water-cooling descending flue (3), wherein the novel upper convection heating surface (4), the novel middle convection heating surface (19) and the novel lower convection heating surface (20) are similar in structure, a novel convection bank lower collection box (16) is arranged at the bottom of a novel convection heating surface (4) at the upper part, the top of the novel convection heating surface (4) at the upper part is communicated with a novel convection heating surface air duct (5), the novel convection bank lower collection box (16), a rear film type wall lower collection box (18) and a middle film type wall lower collection box (17) are communicated with a novel convection heating surface downcomer (6) at the right side, a front film type wall lower collection box (14) is communicated with a novel convection heating surface downcomer (6) at the left side, the left side of a left side film type wall lower collection box (15) and the left side of a right side film type wall lower collection box are communicated with the novel convection heating surface downcomer (6) at the left side, a smoke treatment tower module (25) is arranged at the right side relative position of a boiler tower module (24), the smoke treatment tower module (25) is of a hollow structure, an upward flue (10) is arranged inside the smoke treatment tower module (25), the smoke treatment tower module (25) is internally provided with a coal economizer (11), an air preheater (12) and a smoke outlet (13) from bottom to top in sequence, and the relative position of the bottom of the water-cooling down flue (3) is communicated with the relative position of the bottom of the up flue (10).

2. The novel convection heat exchange type corner tube boiler as claimed in claim 1, wherein: a fire grate (1) is arranged at the opposite position of the bottom of the inner side of the membrane type water-cooling hearth (2).

3. The novel convection heat exchange type corner tube boiler as claimed in claim 1, wherein: the novel convection heating surface (4) at the upper part is provided with a protective sleeve (8) at the position penetrating through the rear membrane wall (23).

4. The novel convection heat exchange type corner tube boiler as claimed in claim 1, wherein: the outer side of the protective sleeve (8) is provided with a trapezoid expansion joint (9) for sealing.

5. The novel convection heat exchange type corner tube boiler as claimed in claim 1, wherein: the boiler tower module (24) is externally provided with a steel structure framework, and the smoke treatment tower module (25) is externally provided with a steel structure framework.

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