CN210291855U

CN210291855U - Warp-weft nano anti-abrasion structure of water-cooled wall of CFB boiler

Info

Publication number: CN210291855U
Application number: CN201921016259.XU
Authority: CN
Inventors: 牟志荣
Original assignee: Zhengzhou Sanzhong Energy Technology Co Ltd
Current assignee: Zhengzhou Sanzhong Energy Technology Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-10
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a CFB boiler water wall longitude and latitude nanometer abrasionproof structure, including cold water wall pipe and fin, one side of fin and the both sides welding on cold water wall pipe surface, the positive welding of fin has the diaphragm to the right side fixedly connected with top guide plate at the top of diaphragm, the first extension board of left side fixedly connected with at top guide plate top to the first arc wall with cold water wall pipe looks adaptation is seted up in the left side of diaphragm, the utility model relates to a boiler water wall abrasionproof technical field. This CFB boiler water-cooling wall longitude and latitude nanometer wear-resisting structure, the welding has the diaphragm through the front of fin to the right side fixedly connected with top guide plate at the top of diaphragm, the first extension board of left side fixedly connected with at top guide plate top compares prior art, can avoid the guide plate root to form the vortex, better with impurity water conservancy diversion to the furnace center, avoid the wearing and tearing of guide plate root, improved the abrasionproof effect of water-cooling wall greatly.

Description

Warp-weft nano anti-abrasion structure of water-cooled wall of CFB boiler

Technical Field

The utility model relates to a boiler water wall abrasionproof technical field specifically is a CFB boiler water wall longitude and latitude nanometer wear-resistant structure.

Background

The CFB boiler is called a circulating fluidized bed boiler, and has the advantages of wide fuel adaptability, high combustion efficiency, large load regulation, direct desulfurization in the bed, low NOx emission realization, simple fuel preparation system, easy realization of comprehensive utilization of ash and slag and the like, the circulating fluidized bed boiler is the best boiler which is selected from coal-fired boilers with the boiler evaporation capacity of more than 10t/h (with the thermal power of 7 MW) at present and even fifty years in the future, is energy-saving, environment-friendly, safe and reliable, the water-cooled wall is the main heated part of the boiler, the water-cooled wall consists of a plurality of rows of steel pipes, the water-cooled wall is distributed around the hearth of the boiler, the inside of the water-cooled wall is flowing water or steam, the outside receives the heat of the flame of the hearth of the boiler, the radiation heat of high-temperature combustion products in the hearth is mainly absorbed, and the working medium moves upwards to be heated and evaporated.

In the water wall tube wall (i.e. dense phase zone) at the lower part of the circulating fluidized bed boiler, the water wall tube wall zone is easy to wear because the coal ash particles descend along the water wall tube, in the prior art, the falling path of ash is generally changed by arranging a guide plate inside a hearth, so as to achieve the purpose of reducing the wear of the heating surface of equipment, in this way, fluid generates vortex at the right-angle welding part of the guide plate and the water wall, the vortex generates the wear amount which is several times of that generated by advection, and the single bottom wear is dispersed to a plurality of parts, so that the root of the guide plate is particularly seriously worn.

Disclosure of Invention

The not enough to prior art, the utility model provides a CFB boiler water-cooling wall longitude and latitude nanometer wear-resisting structure has solved among the prior art guide plate and has easily leaded to the serious problem of guide plate root wearing and tearing.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a CFB boiler water wall longitude and latitude nanometer abrasionproof structure, includes cold water wall pipe and fin, one side of fin and the welding of a both sides on cold water wall pipe surface, the positive welding of fin has the diaphragm to the right side fixedly connected with top guide plate at the top of diaphragm, the first extension board of left side fixedly connected with at top guide plate top to the first arc wall with cold water wall pipe looks adaptation is seted up in the left side of diaphragm, the middle part of first extension board is provided with the second arc wall with cold water wall pipe looks adaptation, and the right side fixedly connected with bottom guide plate of diaphragm bottom, the left side fixedly connected with second extension board of bottom guide plate bottom to the middle part of second extension board is provided with the third arc wall with cold water wall pipe looks adaptation.

Preferably, the top of the transverse plate is fixedly connected with a first reinforcing rib, and the top of the first reinforcing rib is fixedly connected with the bottom of the top guide plate.

Preferably, the bottom of the transverse plate is fixedly connected with a second reinforcing rib, and the top of the second reinforcing rib is fixedly connected with the top of the bottom guide plate.

Preferably, the transverse plates are provided with a plurality of groups, and a vertical plate is arranged between every two adjacent groups of transverse plates.

Preferably, the top and the bottom of the vertical plate are both provided with inclined planes.

Preferably, the included angle between the transverse plate and the top and bottom baffles is between 30 and 70 degrees.

The utility model provides a CFB boiler water wall longitude and latitude nanometer wear resistant structure. Compared with the prior art, the method has the following beneficial effects:

(1) this CFB boiler water wall longitude and latitude nanometer wear-resistant structure, there is the diaphragm through the positive welding of fin, and the right side fixedly connected with top guide plate at the top of diaphragm, the first extension board of left side fixedly connected with at top guide plate top, and the first arc wall with cold water wall pipe looks adaptation is seted up in the left side of diaphragm, the middle part of first extension board is provided with the second arc wall with cold water wall pipe looks adaptation, and the right side fixedly connected with bottom guide plate of diaphragm bottom, the left side fixedly connected with second extension board of bottom guide plate bottom, and the middle part of second extension board be provided with the third arc wall of cold water wall pipe looks adaptation, compare prior art, can avoid the guide plate root to form the vortex, better with impurity water conservancy diversion to the furnace center, avoid the wearing and tearing of guide plate root, the abrasionproof effect of water wall has been improved greatly.

(2) This CFB boiler water-cooling wall longitude and latitude nanometer wear-resisting structure, first strengthening rib of top fixedly connected with through the diaphragm, and the top of first strengthening rib and the bottom fixed connection of top guide plate, the bottom fixedly connected with second strengthening rib of diaphragm, and the top of second strengthening rib and the top fixed connection of bottom guide plate, the diaphragm is provided with the multiunit, and be provided with the riser between adjacent two sets of diaphragms, the top and the bottom of riser all are provided with the inclined plane, the contained angle between diaphragm and top guide plate and the bottom guide plate is 30 degrees to 70 degrees, weld between diaphragm and the riser, form stable longitude and latitude plate structure, stability and impact resistance between the additional strengthening, improve equipment life.

Drawings

FIG. 1 is a front view of the structure of the present invention;

fig. 2 is a side view of the riser structure of the present invention;

fig. 3 is a schematic structural view of the transverse plate of the present invention.

In the figure: 1-cold water wall pipe, 2-fin, 3-transverse plate, 4-top guide plate, 5-first extension plate, 6-first arc groove, 7-second arc groove, 8-bottom guide plate, 9-second extension plate, 10-third arc groove, 11-first reinforcing rib, 12-second reinforcing rib, 13-vertical plate and 14-inclined plane.

Detailed Description

The drawings in the embodiments of the present invention will be combined.

Referring to fig. 1-3, the present invention provides a technical solution: a CFB boiler water wall longitude and latitude nanometer anti-abrasion structure comprises a cold water wall pipe 1 and fins 2, wherein one side of each fin 2 is welded with two sides of the surface of the cold water wall pipe 1, transverse plates 3 are welded on the front surfaces of the fins 2, first reinforcing ribs 11 are fixedly connected to the tops of the transverse plates 3, the tops of the first reinforcing ribs 11 are fixedly connected with the bottoms of top guide plates 4, second reinforcing ribs 12 are fixedly connected to the bottoms of the transverse plates 3, the tops of the second reinforcing ribs 12 are fixedly connected with the tops of bottom guide plates 8, a plurality of groups of transverse plates 3 are arranged, vertical plates 13 are arranged between every two adjacent groups of transverse plates 3, inclined planes 14 are arranged at the tops and the bottoms of the vertical plates 13, the angle of each inclined plane 14 is consistent with the angle between each transverse plate 3 and the top guide plate 4, the inclined plane 14 at the bottom of each vertical plate 14 is welded with the top of each top guide plate 4 in the structure of the bottom transverse, the included angle between the transverse plate 3 and the top guide plate 4 and the bottom guide plate 8 is 30-70 degrees, the surfaces of the top guide plate 4 and the bottom guide plate 8 are both sprayed with nano anti-abrasion paint, the right side of the top of the transverse plate 3 is fixedly connected with a top guide plate 4, the left side of the top guide plate 4 is fixedly connected with a first extension plate 5, a first arc-shaped groove 6 matched with the cold water wall pipe 1 is arranged at the left side of the transverse plate 3, a second arc-shaped groove 7 matched with the cold water wall pipe 1 is arranged at the middle part of the first extending plate, the right side of the bottom of the transverse plate 3 is fixedly connected with a bottom guide plate 8, the left side of the bottom guide plate 8 is fixedly connected with a second extension plate 9, the left sides of the first extension plate 5 and the second extension plate 9 are both contacted with the surface of the cold water wall pipe 1, and the middle part of the second extension plate 9 is provided with a third arc-shaped groove 10 matched with the cold water wall pipe 1.

During the use, vertical air current meets stopping of top guide plate 4 and reduces air velocity, and simultaneously the magazine is thrown to the furnace center under the impact of rake face, and the rake face has also reduced the vortex that produces at the root, and first extension board 5 and second extension board 9 have avoided the vortex to the wearing and tearing of cold water wall pipe 1, and horizontal vortex is then met behind riser 13 and is hindered, and the magazine drops, reduces the wearing and tearing of horizontal vortex to cold water wall pipe 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a CFB boiler water wall longitude and latitude nanometer wear resistant structure, includes cold water wall pipe (1) and fin (2), one side of fin (2) and the welding of a both sides on cold water wall pipe (1) surface, its characterized in that: the front welding of fin (2) has diaphragm (3) to the right side fixedly connected with top guide plate (4) at the top of diaphragm (3), the first extension board (5) of left side fixedly connected with at top of top guide plate (4) to the first arc wall (6) with cold water wall pipe (1) looks adaptation are seted up in the left side of diaphragm (3), the middle part of first extension board is provided with second arc wall (7) with cold water wall pipe (1) looks adaptation, and the right side fixedly connected with bottom guide plate (8) of diaphragm (3) bottom, the left side fixedly connected with second extension board (9) of bottom guide plate (8) bottom to the middle part of second extension board (9) is provided with third arc wall (10) with cold water wall pipe (1) looks adaptation.

2. The CFB boiler water wall longitude and latitude nanometer abrasion-proof structure of claim 1, characterized in that: the top of diaphragm (3) fixedly connected with first strengthening rib (11) to the top of first strengthening rib (11) and the bottom fixed connection of top guide plate (4).

3. The CFB boiler water wall longitude and latitude nanometer abrasion-proof structure of claim 1, characterized in that: the bottom of the transverse plate (3) is fixedly connected with a second reinforcing rib (12), and the top of the second reinforcing rib (12) is fixedly connected with the top of the bottom guide plate (8).

4. The CFB boiler water wall longitude and latitude nanometer abrasion-proof structure of claim 1, characterized in that: the transverse plates (3) are provided with a plurality of groups, and a vertical plate (13) is arranged between every two adjacent groups of transverse plates (3).

5. The CFB boiler water wall longitude and latitude nanometer abrasion prevention structure of claim 4, characterized in that: the top and the bottom of the vertical plate (13) are both provided with an inclined plane (14).

6. The CFB boiler water wall longitude and latitude nanometer abrasion prevention structure of claim 5, characterized in that: and an included angle between the transverse plate (3) and the top guide plate (4) and between the transverse plate and the bottom guide plate (8) is 30-70 degrees.