CN216644199U - Direct-current combustor - Google Patents
Direct-current combustor Download PDFInfo
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- CN216644199U CN216644199U CN202123080974.XU CN202123080974U CN216644199U CN 216644199 U CN216644199 U CN 216644199U CN 202123080974 U CN202123080974 U CN 202123080974U CN 216644199 U CN216644199 U CN 216644199U
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- bluff body
- nozzle
- direct
- silicon carbide
- carbide ceramic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The embodiment of the utility model provides a direct current burner, which comprises a nozzle body and a nozzle which are fixedly connected with each other, wherein a blunt body is arranged in the nozzle, a guide plate A is arranged in the nozzle body, a secondary air channel is arranged on the periphery of the nozzle, a silicon carbide ceramic tube is lined on the inner wall of the nozzle body, the guide plate A is fixed on the inner wall of the silicon carbide ceramic tube, and a plurality of guide plates are arranged in the silicon carbide ceramic tube at intervals along an oblique direction. According to the scheme provided by the embodiment of the utility model, the silicon carbide ceramic tube is lined in the nozzle body, so that the wear resistance and the high-temperature resistance are improved, the silicon carbide ceramic tube formed by integral sintering cannot fall off, and the stability and the service life of the direct-current combustor are ensured; in addition, the design of a plurality of guide plates A can make buggy and air current mix more evenly and strengthen the combustion performance.
Description
Technical Field
The utility model relates to the technical field of coal-fired power generation equipment, in particular to a direct-current combustor.
Background
A direct-current combustor in a boiler for a coal-fired thermal power plant is a main component for organizing a combustion process in a boiler and forming an aerodynamic field in the boiler. In the production process, the nozzle of the direct-current combustor is subjected to frequent thermal shock and high-temperature radiation of a hearth, so that the direct-current combustor has large thermal deformation; in addition, the coal powder overflow surface in the nozzle body is not wear-resistant, is seriously oxidized in a high-temperature environment and is easy to be attached with slag.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, embodiments of the present invention provide a direct-flow combustor.
In one aspect of the embodiment of the utility model, the direct current burner comprises a nozzle body and a nozzle which are fixedly connected with each other, wherein a blunt body is arranged in the nozzle, a guide plate A is arranged in the nozzle body, a secondary air channel is arranged on the periphery of the nozzle, a silicon carbide ceramic tube is lined on the inner wall of the nozzle body, the guide plate A is fixed on the inner wall of the silicon carbide ceramic tube, and a plurality of guide plates are arranged in the silicon carbide ceramic tube at intervals along an oblique direction.
Compared with the prior art, the utility model has the beneficial effects that: the silicon carbide ceramic tube is lined in the nozzle body, so that the wear resistance and the high-temperature resistance are improved, the silicon carbide ceramic tube formed by integral sintering cannot fall off, and the stability and the service life of the direct-current combustor are ensured; in addition, the design of a plurality of guide plates A can make buggy and air current mix more evenly and strengthen the combustion performance.
Optionally, the guide plate a and the silicon carbide ceramic tube are of an integrally formed structure.
Optionally, the cross section of the baffle plate a is triangular, a first side of the triangle is parallel to the axis of the nozzle body, and a first angle of the triangle opposite to the first side is located on the lower side of the first side.
Optionally, still including being located the guide plate B in blunt body the place ahead, guide plate B includes interconnect's diaphragm and swash plate, and the diaphragm is located the coplanar with the blunt body, and the swash plate is located the one side of keeping away from the blunt body.
Optionally, the bluff body is split type structure, including bluff body anterior segment and bluff body back end, the rear portion of bluff body anterior segment is provided with the protruding axle, the front portion of bluff body back end be provided with the draw-in groove of protruding axle adaptation, be provided with the through hole on protruding axle and the draw-in groove relatively, be provided with high temperature resistant flexible pad between the contact surface between bluff body anterior segment and the bluff body back end, bluff body anterior segment and bluff body back end are through round pin axle fixed connection, the rear portion of bluff body back end is provided with the spacing groove, the spacing groove cover is established on the dog that sets up in the nozzle.
Optionally, the silicon carbide ceramic tubes are of a segmented structure, and an expansion gap is reserved between each segment of the silicon carbide ceramic tubes.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a schematic structural diagram of a once-through combustor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a blunt body according to an embodiment of the present invention.
Wherein, nozzle body 1, nozzle 2, blunt body 3, guide plate A4, secondary air duct 5, carborundum ceramic tube 6, guide plate B7, blunt body anterior segment 8, blunt body back end 9, protruding axle 10, draw-in groove 11, high temperature resistant flexible pad 12, round pin axle 13, dog 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Referring to fig. 1, a direct current burner according to an embodiment of the present invention includes a nozzle body 1 and a nozzle 2 fixedly connected to each other, a blunt body 3 is disposed in the nozzle 2, a flow guide plate a4 is disposed in the nozzle body 1, a secondary air duct 5 is disposed at an outer periphery of the nozzle 2, a silicon carbide ceramic tube 6 is lined on an inner wall of the nozzle body 1, the flow guide plates a4 are fixed on an inner wall of the silicon carbide ceramic tube 6, and a plurality of flow guide plates are disposed in the silicon carbide ceramic tube 6 at an oblique interval.
The oblique direction refers to a direction gradually inclining downwards along the trend of the airflow.
The guide plate A4 and the silicon carbide ceramic tube 6 are in an integrated structure, namely the guide plate A4 is formed by integrally sintering the same material of the silicon carbide ceramic tube 6.
The cross section of the flow guide plate A4 is triangular, the first side of the triangle is parallel to the axis of the nozzle body 1, and the first angle of the triangle opposite to the first side is positioned at the lower side of the first side; the guide plate A4 adopts a triangular column structure as a whole, so that the mechanical strength of the guide plate A4 can be improved.
Still include the guide plate B7 that is located bluff body 3 the place ahead, the place ahead is the direction of the trend of air current, and guide plate B7 includes interconnect's diaphragm and swash plate, and the diaphragm is located the coplanar with bluff body 3, and the swash plate is located the one side of keeping away from bluff body 3.
The bluff body 3 is of a split structure and comprises a bluff body front section 8 and a bluff body rear section 9, a protruding shaft 10 is arranged at the rear part of the bluff body front section 8, a clamping groove 11 matched with the protruding shaft 10 is arranged at the front part of the bluff body rear section 9, through holes are oppositely formed in the protruding shaft 10 and the clamping groove 11, a high-temperature-resistant flexible cushion 12 is arranged between contact surfaces between the bluff body front section 8 and the bluff body rear section 9, an expansion amount is reserved between the bluff body front section 8 and the bluff body rear section 9, the bluff body front section 8 and the bluff body rear section 9 are fixedly connected through a pin shaft 13, a limiting groove is formed in the rear part of the bluff body rear section 9, and the limiting groove is sleeved on a stop block 14 arranged in the nozzle 2; the front section 8 of the bluff body can be made of silicon carbide ceramic as a windward section, the wear resistance of the bluff body 3 is improved, and the rear section 9 of the bluff body is less worn compared with the front section in production, so that the bluff body can be made of cast steel, and the overall manufacturing cost of the bluff body 3 is reduced.
The silicon carbide ceramic tubes 6 are of a sectional structure, and an expansion gap is reserved between each section of the silicon carbide ceramic tubes and can be 2-3 mm.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. A direct-current burner comprises a nozzle body and a nozzle which are fixedly connected with each other, wherein a blunt body is arranged in the nozzle, a guide plate A is arranged in the nozzle body, and a secondary air duct is arranged at the periphery of the nozzle.
2. The direct-current burner of claim 1, wherein the baffle plate a and the silicon carbide ceramic tube are of an integrally formed structure.
3. The direct flow burner of claim 1, wherein the deflector plate a has a triangular shape in cross section, a first side of the triangular shape being parallel to the axis of the nozzle body, and a first corner of the triangular shape opposite to the first side being located on a lower side of the first side.
4. The direct-current burner of claim 1, further comprising a flow guide plate B located in front of the bluff body, wherein the flow guide plate B comprises a cross plate and an inclined plate which are connected with each other, the cross plate and the bluff body are located on the same plane, and the inclined plate is located on a side away from the bluff body.
5. The direct-current burner of claim 1, wherein the bluff body is of a split structure and comprises a front bluff body section and a rear bluff body section, a protruding shaft is arranged at the rear part of the front bluff body section, a clamping groove matched with the protruding shaft is arranged at the front part of the rear bluff body section, through holes are oppositely arranged on the protruding shaft and the clamping groove, a high-temperature-resistant flexible pad is arranged between contact surfaces between the front bluff body section and the rear bluff body section, the front bluff body section and the rear bluff body section are fixedly connected through a pin shaft, a limiting groove is arranged at the rear part of the rear bluff body section, and the limiting groove is sleeved on a stop block arranged in the nozzle.
6. The direct-current burner of claim 1, wherein the silicon carbide ceramic tubes are of a segmented structure, and an expansion gap is reserved between each segment of the silicon carbide ceramic tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123080974.XU CN216644199U (en) | 2021-12-09 | 2021-12-09 | Direct-current combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123080974.XU CN216644199U (en) | 2021-12-09 | 2021-12-09 | Direct-current combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216644199U true CN216644199U (en) | 2022-05-31 |
Family
ID=81739665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123080974.XU Active CN216644199U (en) | 2021-12-09 | 2021-12-09 | Direct-current combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216644199U (en) |
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2021
- 2021-12-09 CN CN202123080974.XU patent/CN216644199U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230619 Address after: 117000 Hedi community, Gaotaizi office, Mingshan District, Benxi City, Liaoning Province Patentee after: Benxi thermal power branch of Northeast Electric Power Co., Ltd. of State Power Investment Group Patentee after: HULUDAO HUANENG INDUSTRIAL CERAMIC Co.,Ltd. Patentee after: National electric investment group Northeast Electric Power Co.,Ltd. Address before: 117000 Hedi community, Gaotaizi office, Mingshan District, Benxi City, Liaoning Province Patentee before: Benxi thermal power branch of Northeast Electric Power Co., Ltd. of State Power Investment Group Patentee before: HULUDAO HUANENG INDUSTRIAL CERAMIC Co.,Ltd. |