CN213453610U

CN213453610U - Wear-resistant structure for circulating fluidized bed boiler

Info

Publication number: CN213453610U
Application number: CN202021897968.6U
Authority: CN
Inventors: 夏憬; 阳志雄; 余义斌; 段志军
Original assignee: Asia Symbol Guangdong Paper Co ltd
Current assignee: Asia Symbol Guangdong Paper Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-06-15
Anticipated expiration: 2030-09-02

Abstract

The utility model relates to an anti-abrasion technical field discloses an anti-abrasion structure for circulating fluidized bed boiler, including wallboard and wear plate, the wear plate transversely set up in on the wallboard, the water-cooled tube has on the wallboard, it dodges to have on the wear plate the first portion of digging out of water-cooled tube. The utility model discloses a set up the wear plate, reduce flue gas and wall face flow respectively with the relative speed between the wallboard, reduce the cutting force between solid particle and the wallboard to the mode of initiative abrasionproof prevents the inner wall wearing and tearing of boiler, reduces the blowing out of boiler, reduces the economic cost of boiler inner wall abrasionproof.

Description

Wear-resistant structure for circulating fluidized bed boiler

Technical Field

The utility model relates to an anti-abrasion technical field especially relates to an anti-abrasion structure for circulating fluidized bed boiler.

Background

The circulating fluidized bed boiler is suitable for burning various low-quality fuels, but flue gas is generated during the burning of the fuels, and the inner wall of the boiler is scoured in the rising process of the fuel gas in the boiler, so that the inner wall of the boiler is abraded. When the flue gas is subjected to internal circulation, solid particles in the flue gas fall back on the inner wall of the boiler and form wall surface flow, and the inner wall of the boiler is severely washed in the process, so that the inner wall of the boiler is abraded, and the service life of the boiler is short.

At present, in order to prevent the abrasion of the inner wall of the boiler, structures such as an abrasion-proof cover are usually arranged on the inner wall of the boiler, smoke and wall surface flow erode the abrasion-proof cover, and the abrasion-proof cover replaces the passive abrasion-proof mode that the inner wall of the boiler is abraded, so that the inner wall of the boiler is prevented from being abraded. However, the wear-resistant cover needs to be replaced when in use for a period of time, when the wear-resistant cover is replaced, the boiler needs to be shut down, bed materials in the boiler need to be cleaned, then the wear-resistant cover needs to be replaced, and then the boiler needs to be opened again after the bed materials are added. This results in a higher economic cost of replacing the wear cover.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides an anti-wear structure for circulating fluidized bed boiler can prevent the inner wall wearing and tearing of boiler, reduces the blowing out of boiler, reduces the economic cost of boiler inner wall abrasionproof.

In order to achieve the above object, the utility model provides an anti-abrasion structure for circulating fluidized bed boiler, including wallboard and wear plate, the wear plate transversely set up in on the wallboard, the water-cooled tube has on the wallboard, it dodges to have on the wear plate the first portion of hollowing out of water-cooled tube.

Optionally, the number of the wear-resistant plates is multiple, and the multiple wear-resistant plates are arranged on the wall plate at intervals from top to bottom.

Optionally, the plurality of wear plates are uniformly arranged on the wall plate.

Optionally, the interval between the wear plates is 200 mm-850 mm.

Optionally, the wear plate is perpendicular to the wall plate.

Optionally, a second hollowed portion is further disposed on the wear-resistant plate, and the second hollowed portion is disposed on an edge of the wear-resistant plate away from the inner wall.

Optionally, the number of the second hollowed parts is several, and several second hollowed parts are arranged on the same wear-resistant plate at intervals.

Optionally, the wear plate is welded to the wall plate.

The embodiment of the utility model provides an anti-abrasion structure for circulating fluidized bed boiler compares with prior art, and its beneficial effect lies in:

the utility model discloses an anti-abrasion structure for circulating fluidized bed boiler, including wallboard and wear plate, the wear plate transversely sets up on the wallboard, has the water-cooled tube on the wallboard, has the first portion of hollowing of dodging the water-cooled tube on the wear plate. Through setting up the wear plate, when the flue gas rises along the wallboard, can be hindered by the wear plate, reduce the relative velocity between flue gas and the wallboard, reduce the wearing and tearing to the wallboard. When the wall surface flow falls along the wall plate, the wall surface flow is also blocked by the wear-resistant plate, so that the relative speed between the wall surface flow and the wall plate is reduced, and the wear to the wall plate is reduced. Through such structure, can prevent the inner wall wearing and tearing of boiler, reduce the blowing out of boiler, reduce the economic cost of boiler inner wall abrasionproof.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a wear plate according to an embodiment of the present invention.

In the drawings, 1, wall panels; 2. a wear plate; 3. a first hollowed-out portion; 4. a second hollow portion.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, an anti-wear structure for a circulating fluidized bed boiler according to an embodiment of the present invention includes a wall plate 1 and an anti-wear plate 2, the anti-wear plate 2 is transversely disposed on the wall plate 1, a water cooling pipe is disposed on the wall plate 1, and a first hollow portion 3 for avoiding the water cooling pipe is disposed on the anti-wear plate 2. Through setting up wear plate 2, when the flue gas rose along wallboard 1, can be hindered by wear plate 2, reduce the relative speed between flue gas and the wallboard 1, reduce the cutting force of solid particle to wallboard 1, reduce the wearing and tearing to wallboard 1. When the wall surface flow falls along the wall plate 1, the wall surface flow is also hindered by the wear-resistant plate 2, so that the relative speed between the wall surface flow and the wall plate 1 is reduced, the cutting force of solid particles on the wall plate 1 is reduced, and the abrasion on the wall plate 1 is reduced. Through the structure, the cutting force between the solid particles and the wall plate 1 is essentially reduced, the abrasion of the inner wall of the boiler is prevented in an active abrasion-proof mode, the furnace shutdown of the boiler is reduced, and the economic cost of the abrasion-proof of the inner wall of the boiler is reduced.

Referring to fig. 1, the number of the wear-resistant plates 2 is plural, and the plurality of wear-resistant plates 2 are arranged on the wall plate 1 at intervals from top to bottom. Set up like this, the wall face of rising flue gas and whereabouts flows and all constantly receives the hindrance of wear plate 2, constantly reduces the velocity of flow that flue gas and wall face flowed to reduce the cutting force between solid particle and wallboard 1, prevent the inner wall wearing and tearing of boiler. In this embodiment, the wear plate 2 is welded to the wall plate 1. The wear plate 2 is perpendicular to the wall plate 1. When the wear plate 2 is mounted, the wear plate 2 can be spot welded to the wall plate 1 vertically. A plurality of wear plates 2 are evenly arranged on the wall plate 1. The spacing between each wear plate 2 is 200 mm-850 mm. The upper part of the combustion preventing belt of the boiler can be set to be 18 wear-proof plates 2 at intervals of 645mm, and two wear-proof plates 2 can be arranged at the positions of 425mm and 640mm above the top wear-proof plate 2. Also at the outlet of the boiler 16 wear plates 2 are provided, spaced 850mm apart. The interval between the wall plate 1 and the wear-resistant plate 2 on the ceiling of the boiler can be set to be 200 mm-600 mm. The distance from the outlet area may be arranged more densely.

The wear-resistant plate 2 is further provided with a second hollow part 4, and the second hollow part 4 is arranged on the edge of the wear-resistant plate 2 far away from the inner wall. When rising flue gas and the wall face of whereabouts flow and receive wearing plate 2's hindrance, can be detained on wearing plate 2, set up second portion of digging into 4, can be convenient for flue gas and wall face flow continue to flow, nevertheless because second portion of digging into 4 is located wearing plate 2 and keeps away from the edge of inner wall, consequently can not rub wallboard 1. The number of the second hollow parts 4 is a plurality, and the second hollow parts 4 are arranged on the same wear-resistant plate 2 at intervals. The second hollowing portions 4 are arranged so that the flue gas and the wall surface flow can continue to flow, and therefore the number and the spacing distance of the second hollowing portions 4 can be set as required according to actual production conditions.

The utility model discloses a working process does: the rising flue gas and the falling wall flow are hindered by the wear plate 2 as they flow along the wall plate 1, reducing the relative velocity between the flue gas and the wall flow and the wall plate 1, respectively.

To sum up, the embodiment of the utility model provides an anti-abrasion structure for circulating fluidized bed boiler, it is through setting up wear plate 2, reduce flue gas and wall face flow respectively with wallboard 1 between the relative speed, reduce the cutting force between solid particle and the wallboard 1 to the mode of initiative abrasionproof prevents the inner wall wearing and tearing of boiler, reduces the blowing out of boiler, reduces the economic cost of boiler inner wall abrasionproof.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an anti-wear structure for circulating fluidized bed boiler, its characterized in that includes wallboard and wear plate, the wear plate transversely set up in on the wallboard, the water-cooled tube has on the wallboard, the wear plate is last to have the first portion of digging out of dodging the water-cooled tube.

2. The wear structure for a circulating fluidized bed boiler of claim 1, wherein the wear plate is plural in number, and the plurality of wear plates are provided on the wall plate at intervals from top to bottom.

3. The wear structure for a circulating fluidized bed boiler of claim 2, wherein a plurality of the wear plates are uniformly provided on the wall plate.

4. The wear structure for a circulating fluidized bed boiler of claim 3, wherein the interval between the respective wear plates is 200 mm-850 mm.

5. The wear structure for a circulating fluidized bed boiler of claim 1, wherein the wear plate is perpendicular to the wall plate.

6. The wear structure for a circulating fluidized bed boiler of claim 1, wherein the wear plate is further provided with a second cutout portion, the second cutout portion being provided at an edge of the wear plate away from the inner wall.

7. The wear structure for a circulating fluidized bed boiler of claim 6, wherein the number of the second hollows is several, and several of the second hollows are provided at intervals on the same wear plate.

8. The wear structure for a circulating fluidized bed boiler of claim 1, wherein the wear plate is welded to the wall plate.