CN214064901U - Multi-stage composite pulverized coal burner - Google Patents
Multi-stage composite pulverized coal burner Download PDFInfo
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- CN214064901U CN214064901U CN202023221925.9U CN202023221925U CN214064901U CN 214064901 U CN214064901 U CN 214064901U CN 202023221925 U CN202023221925 U CN 202023221925U CN 214064901 U CN214064901 U CN 214064901U
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- pulverized coal
- burner
- liner
- wall
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Abstract
The utility model relates to a multi-stage composite pulverized coal burner, which comprises a burner nozzle, a nozzle body and a nozzle lining component; the burner nozzle is arranged at the port part of the nozzle body; the nozzle lining assembly is embedded in the inner peripheral wall of the nozzle body and is matched with the shape and the size of the inner wall of the nozzle body; the nozzle liner assembly includes a front nozzle liner and a rear nozzle liner; the front end nozzle liner is arranged at one end close to the nozzle of the combustor; the rear end nozzle liner is far away from the burner spout and is fixedly connected with the front end nozzle liner. The pulverized coal combustion boiler has the characteristics of reasonable structural design, low manufacturing cost and long service life, can solve the problems of abrasion and burning loss of the pulverized coal burner, and can be also suitable for pulverized coal combustion boilers such as a four-corner tangential combustion boiler, a wall tangential combustion boiler, a front-back wall opposed combustion boiler, a single-wall opposed combustion boiler, a W flame combustion boiler and the like.
Description
Technical Field
The utility model relates to a boiler combustion technology field especially relates to a multistage compound pulverized coal burner, and it is applicable to pulverized coal burning boilers such as four corners tangential firing boiler, wall formula tangential firing boiler, front and back wall opposed firing boiler, single wall opposed firing boiler, W flame firing boiler.
Background
The nozzle body of the conventional pulverized coal burner has an integral casting structure, a composite ceramic structure and a composite silicon carbide structure (see figure 1); the disadvantages of the conventional pulverized coal burner are mainly expressed as follows:
1. due to the fact that the burner is washed by coal powder for a long time and used in a high-temperature environment, the problem of nozzle body abrasion often occurs, powder accumulated inside a combustor air chamber is ignited, and finally the problem of burning loss of the coal powder combustor occurs;
2. in order to ensure the service life of the combustor, the material of the combustor can only be integrally improved, so that the combustor is not economical and the problem of abrasion of a nozzle body of the combustor is difficult to solve;
3. in a conventional composite ceramic and silicon carbide pulverized coal burner, the problem of falling off of ceramic and silicon carbide often occurs at the front part of the burner, so that a nozzle body is worn through, powder accumulated in a burner air box is ignited, and finally the problem of burning loss of the pulverized coal burner occurs;
4. the conventional composite ceramic and silicon carbide pulverized coal burner has a complex production process and cannot solve the problem of front falling of the burner.
SUMMERY OF THE UTILITY MODEL
The aforesaid that exists to conventional pulverized coal burner among the prior art is not enough, the utility model aims to provide a: the utility model provides a multistage compound pulverized coal burner, it has that structural design is reasonable, low in manufacturing cost, long service life's characteristics, can solve the wearing and tearing of pulverized coal burner, the problem of scaling loss, can also be applicable to pulverized coal fired boiler such as four corners tangential firing boiler, wall tangential firing boiler, front and back wall opposed firing boiler, single wall opposed firing boiler, W flame firing boiler.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multi-stage composite pulverized coal burner comprises a burner nozzle, a nozzle body and a nozzle lining assembly; the burner nozzle is arranged at the port part of the nozzle body; the nozzle lining assembly is embedded in the inner peripheral wall of the nozzle body and is matched with the shape and the size of the inner wall of the nozzle body; the nozzle liner assembly includes a front nozzle liner and a rear nozzle liner; the front end nozzle liner is arranged at one end close to the nozzle of the combustor; the rear end nozzle liner is far away from the burner spout and is fixedly connected with the front end nozzle liner.
As a further optimization of the technical scheme, a front-end nozzle lining mounting part is arranged on the burner nozzle; the nozzle body is provided with a nozzle lining component embedding part; the depth of the nozzle lining component embedding part is matched with the thickness of the front end nozzle lining installation part.
As a further optimization of the technical scheme, an arc transition part is arranged at the joint of the front-end nozzle lining installation part and the front-end nozzle lining.
As a further optimization of the above technical solution, the front nozzle liner is a monolithic cast iron part or a monolithic alloy part; the rear nozzle liner is an integral ceramic portion or an integral silicon carbide portion.
As further optimization of the technical scheme, the multistage composite pulverized coal burner is used for any one of a four-corner tangential firing boiler, a wall tangential firing boiler, a front-wall and rear-wall opposed firing boiler, a single-wall opposed firing boiler and a W flame firing boiler.
Adopt the utility model discloses a multistage compound pulverized coal burner has following beneficial effect:
the utility model discloses a multistage compound pulverized coal burner has solved the problem that metal material is not able to bear or endure the buggy and erodees, has solved the problem that pottery, carborundum material are not high temperature resistant again, has prolonged pulverized coal burner's life, and the coproduction simple process has reduced manufacturing cost, and economic benefits is showing.
Drawings
Fig. 1 is a schematic view showing a structure of a conventional pulverized coal burner in the prior art.
Fig. 2 is a schematic structural diagram of the multi-stage composite pulverized coal burner of the present invention.
Detailed Description
The structure of the multi-stage composite pulverized coal burner of the present invention will be described in detail with reference to fig. 2.
A multi-stage composite pulverized coal burner comprises a burner nozzle 1, a nozzle body 2 and a nozzle lining assembly; the burner nozzle is arranged at the port part of the nozzle body; the nozzle lining assembly is embedded in the inner peripheral wall of the nozzle body and is matched with the shape and the size of the inner wall of the nozzle body; the nozzle liner assembly comprises a front nozzle liner 3 and a rear nozzle liner 4; the front end nozzle liner is arranged at one end close to the nozzle of the combustor; the rear end nozzle liner is far away from the burner spout and is fixedly connected with the front end nozzle liner. A front-end nozzle lining mounting part is arranged on the burner nozzle; the nozzle body is provided with a nozzle lining component embedding part; the depth of the nozzle lining component embedding part is matched with the thickness of the front end nozzle lining installation part. The front end nozzle lining installation part and the front end nozzle lining connection part are provided with arc transition parts. The front end nozzle lining is an integral cast iron part or an integral alloy part; the rear nozzle liner is an integral ceramic portion or an integral silicon carbide portion. The multi-stage composite pulverized coal burner is used for any one of a four-corner tangential firing boiler, a wall tangential firing boiler, a front-wall and rear-wall opposed firing boiler, a single-wall opposed firing boiler and a W flame firing boiler.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A multi-stage composite pulverized coal burner is characterized in that: the multi-stage composite pulverized coal burner comprises a burner nozzle (1), a nozzle body (2) and a nozzle lining assembly; the burner nozzle is arranged at the port part of the nozzle body; the nozzle lining assembly is embedded in the inner peripheral wall of the nozzle body and is matched with the shape and the size of the inner wall of the nozzle body; the nozzle liner assembly comprises a front end nozzle liner (3) and a rear end nozzle liner (4); the front end nozzle liner is arranged at one end close to the nozzle of the combustor; the rear end nozzle liner is far away from the burner spout and is fixedly connected with the front end nozzle liner.
2. The multi-stage composite pulverized coal burner as claimed in claim 1, wherein: a front-end nozzle lining mounting part is arranged on the burner nozzle; the nozzle body is provided with a nozzle lining component embedding part; the depth of the nozzle lining component embedding part is matched with the thickness of the front end nozzle lining installation part.
3. The multi-stage composite pulverized coal burner as claimed in claim 2, wherein: the front end nozzle lining installation part and the front end nozzle lining connection part are provided with arc transition parts.
4. The multi-stage composite pulverized coal burner as claimed in claim 1, wherein: the front end nozzle lining is an integral cast iron part or an integral alloy part; the rear nozzle liner is an integral ceramic portion or an integral silicon carbide portion.
5. The multi-stage composite pulverized coal burner as claimed in any one of claims 1 to 4, wherein: the multi-stage composite pulverized coal burner is used for any one of a four-corner tangential firing boiler, a wall tangential firing boiler, a front-wall and rear-wall opposed firing boiler, a single-wall opposed firing boiler and a W flame firing boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023221925.9U CN214064901U (en) | 2020-12-28 | 2020-12-28 | Multi-stage composite pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023221925.9U CN214064901U (en) | 2020-12-28 | 2020-12-28 | Multi-stage composite pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214064901U true CN214064901U (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023221925.9U Active CN214064901U (en) | 2020-12-28 | 2020-12-28 | Multi-stage composite pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214064901U (en) |
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2020
- 2020-12-28 CN CN202023221925.9U patent/CN214064901U/en active Active
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