CN203068502U - Pulverized coal burner nozzle long in service life - Google Patents
Pulverized coal burner nozzle long in service life Download PDFInfo
- Publication number
- CN203068502U CN203068502U CN 201320022659 CN201320022659U CN203068502U CN 203068502 U CN203068502 U CN 203068502U CN 201320022659 CN201320022659 CN 201320022659 CN 201320022659 U CN201320022659 U CN 201320022659U CN 203068502 U CN203068502 U CN 203068502U
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- CN
- China
- Prior art keywords
- pulverized coal
- resisting
- service life
- burner nozzle
- wear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a pulverized coal burner nozzle long in service life. The pulverized coal burner nozzle long in service life comprises a nozzle and a pulverized coal channel, wherein the nozzle and the pulverized coal channel are sequentially arranged from outside to inside. The nozzle and the pulverized coal channel are respectively provided with a group of matched baffle plate grooves, wherein a first baffle plate, a second baffle plate and a third baffle plate are fixed in each group of baffle plate grooves in a welding mode. The pulverized coal burner nozzle long in service life further comprises an abrasion-resistant ceramic layer, wherein the abrasion-resistant ceramic layer is composed of a group of abrasion-resistant ceramic sheets. The middle of each abrasion-resistant ceramic sheet is provided with a fixed hole, wherein the fixed hole of each abrasion-resistant ceramic sheet is connected with the inner lateral wall of the pulverized coal channel through a welding part. A pulverized coal burner is simple in structure and low in cost. The abrasion-resistant ceramic sheets are fixed on the inner lateral wall of the pulverized coal channel through fixed holes and the welding part, and therefore fixing fastness of the abrasion-resistant ceramic layer and the pulverized coal channel is greatly increased, and accordingly service life of the pulverized coal burner nozzle is prolonged, and operating cost of the pulverized coal burner is reduced.
Description
Technical field
The utility model belongs to field of electrical equipment, particularly a kind of coal burner nozzle of long service life.
Background technology
For obtaining good coal dust firing effect, the nozzle of the coal burner in thermal power plant often adopts the reamer form, and namely the spout profile is horn-like, and its inner flow area enlarges gradually.At the coal burner middle part one group of dividing plate is arranged fixedly usually, coal dust is spread apart it is fully burnt, yet, because air-flow conveying solid substance coal dust is adopted in the thermal power plant usually, the high velocity air of entrained solids coal dust is when flowing through nozzle, the coal dust passage madial wall of solid particle bump coal burner makes its heavy wear, thereby cause the nozzle of coal burner short service life, usually need to change the nozzle of burner, cause maintenance of equipment cost height, have a strong impact on the normal operation in thermal power plant.
Pottery is a kind of good high-abrasive material, be applied to effectively to prevent in the coal burner wearing and tearing of coal dust passage madial wall, the gluing mode of fixing employing usually of the coal dust passage of ceramic material and metal, yet, adopt gluing fixing insecure, resistance to elevated temperatures is bad, easily come off, service life is short.
The utility model content
The utility model purpose: the purpose of this utility model provides a kind of coal burner nozzle of long service life.
Technical scheme: the coal burner nozzle of a kind of long service life that the utility model provides, comprise the shower nozzle and the coal dust passage that from outer to inner set gradually, be respectively equipped with one group of septalium of working in coordination on described shower nozzle and the coal dust passage, be welded with first dividing plate, second partition and the 3rd dividing plate in described one group of septalium, also comprise ceramic wearing coat, described ceramic wearing coat is made up of one group of ceramic wear-resisting sheet, described ceramic wear-resisting sheet middle part is provided with fixing hole, and the madial wall of the fixing hole of described ceramic wear-resisting sheet and coal dust passage is fixed by weld part.
As preferably, the shape of described fixing hole and weld part is identical, is to be round platform, bucking ladder, cylinder or cuboid.
Preferred as another kind, the thickness of described wearing layer is 5-15mm.
Preferred as another kind, font or waveform are bent in being shaped as of described the 3rd dividing plate.
Preferred as another kind, also comprise the ceramic wear-resisting lid, described ceramic wear-resisting is covered in the fixing hole; Avoid the weld part wearing and tearing to cause the ceramic wear-resisting sheet to come off on the one hand, more attractive in appearance on the other hand.
Beneficial effect: the coal burner that the utility model provides is simple in structure, with low cost, utilize fixing hole and weld part the ceramic wear-resisting sheet to be fixed on the madial wall of coal dust passage, increased the fixing fastness of ceramic wearing coat and coal dust passage greatly, thereby improved the service life of coal burner nozzle, reduced the operation cost of coal burner.
Description of drawings
Fig. 1 is the coal burner structure of nozzle schematic diagram of the utility model long service life.
Fig. 2 is the side view of the coal burner nozzle of the utility model long service life.
Fig. 3 is the structural representation of ceramic wear-resisting sheet.
Fig. 4 is ceramic wear-resisting sheet and coal dust passage stationary state structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the coal burner nozzle of the utility model long service life is made and to further specify.
The coal burner nozzle of long service life, see Fig. 1 and Fig. 2, comprise the shower nozzle 1 and the coal dust passage 2 that from outer to inner set gradually, be respectively equipped with one group of septalium of working in coordination on shower nozzle 1 and the coal dust passage 2, be welded with first dividing plate 7, second partition 8 and the 3rd dividing plate 9 in one group of septalium; Also comprise ceramic wearing coat 3, ceramic wearing coat 3 is made up of one group of ceramic wear-resisting sheet 4, and ceramic wear-resisting sheet 4 middle parts are provided with fixing hole 5, and the fixing hole 5 of ceramic wear-resisting sheet 4 is fixing by weld part 6 with the madial wall of coal dust passage 2; Also comprise ceramic wear-resisting lid 10, ceramic wear-resisting lid 10 is located in the fixing hole 5.
In the utility model, identical being of the shape of fixing hole 5 and weld part 6 is round platform, and alternatively, its shape also can be bucking ladder, cylinder or cuboid; The thickness of wearing layer 3 is 5-15mm; Font or waveform are bent in being shaped as of the 3rd dividing plate 5.
Claims (5)
1. the coal burner nozzle of a long service life, comprise the shower nozzle (1) and the coal dust passage (2) that from outer to inner set gradually, be respectively equipped with one group of septalium of working in coordination on described shower nozzle (1) and the coal dust passage (2), be welded with first dividing plate (7) in described one group of septalium, second partition (8) and the 3rd dividing plate (9), it is characterized in that: also comprise ceramic wearing coat (3), described ceramic wearing coat (3) is made up of one group of ceramic wear-resisting sheet (4), described ceramic wear-resisting sheet (4) middle part is provided with fixing hole (5), and the fixing hole (5) of described ceramic wear-resisting sheet (4) is fixing by weld part (6) with the madial wall of coal dust passage (2).
2. a kind of wear-resisting burner nozzle according to claim 1, it is characterized in that: described fixing hole (5) is identical with the shape of weld part (6), is to be round platform, bucking ladder, cylinder or cuboid.
3. a kind of wear-resisting burner nozzle according to claim 1, it is characterized in that: the thickness of described wearing layer (3) is 5-15mm.
4. a kind of wear-resisting burner nozzle according to claim 1 is characterized in that: described the 3rd dividing plate (9) be shaped as bow font or waveform.
5. a kind of wear-resisting burner nozzle according to claim 1 is characterized in that: also comprise ceramic wear-resisting lid (10), described ceramic wear-resisting lid (10) is located in the fixing hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022659 CN203068502U (en) | 2013-01-16 | 2013-01-16 | Pulverized coal burner nozzle long in service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022659 CN203068502U (en) | 2013-01-16 | 2013-01-16 | Pulverized coal burner nozzle long in service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203068502U true CN203068502U (en) | 2013-07-17 |
Family
ID=48767281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320022659 Expired - Fee Related CN203068502U (en) | 2013-01-16 | 2013-01-16 | Pulverized coal burner nozzle long in service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203068502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104155A (en) * | 2014-05-13 | 2016-11-09 | 哈纳沃特株式会社 | Burner nozzle |
-
2013
- 2013-01-16 CN CN 201320022659 patent/CN203068502U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104155A (en) * | 2014-05-13 | 2016-11-09 | 哈纳沃特株式会社 | Burner nozzle |
| CN106104155B (en) * | 2014-05-13 | 2018-02-09 | 哈纳沃特株式会社 | Burner nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20160116 |
|
| EXPY | Termination of patent right or utility model |