CN213119074U

CN213119074U - Premixing low-nitrogen combustor

Info

Publication number: CN213119074U
Application number: CN202021386004.5U
Authority: CN
Inventors: 唐志强; 李洪炜
Original assignee: Jiangsu Maiyang Environmental Protection Co ltd
Current assignee: Jiangsu Maiyang Environmental Protection Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-05-04
Anticipated expiration: 2030-07-15

Abstract

The utility model discloses a low nitrogen burner mixes in advance, include the nozzle section of thick bamboo that communicates with the mist air supply and locate the heat conduction subassembly in the nozzle section of thick bamboo, encircle with the nozzle section of thick bamboo with the centre of a circle in the nozzle section of thick bamboo and establish a plurality of first heat-conducting plates that say, heat conduction subassembly includes that the first periphery of saying of ring inlays the first heat-conducting ring of establishing and locates a plurality of first heat-conducting plates between each first way of spouting along the length direction that first spout said, first spout the centre of a circle one side position department that says and be close to the nozzle section of thick bamboo, the first way of spouting of nozzle section of thick bamboo inner ring is equipped with the second heat-conducting ring, nozzle section of thick bamboo outer ring is equipped with annular fin, be fixed with a plurality of heat conduction ends that pass nozzle section of thick bamboo and first heat-conducting ring fixed connection on this annular. The utility model discloses low NOx burner mixes in advance to air and gas, reduces the temperature of burning department simultaneously, reduces nitrogen oxide's formation.

Description

Premixing low-nitrogen combustor

Technical Field

The utility model relates to a combustor field, concretely relates to low NOx burner mixes in advance.

Background

With the further and advanced industrialization process, the discharge of a large amount of harmful gases, especially nitrogen oxides, can cause climate change and have negative effects on the health of human beings. In the development of industrial civilization, tail gas generated in boiler production is one of important factors influencing ecological environment, so that the improvement of a low-nitrogen environment-friendly boiler is the primary task of environmental protection at present, and the core of the low-nitrogen performance of the boiler is the improvement of a combustor to reduce nitrogen oxides discharged by the combustor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides a can carry out premixing and reduce temperature to gas, reduce heating power nitrogen oxide's formation. The technical scheme of the utility model as follows:

a premixed low-nitrogen burner comprises a burner cylinder communicated with a mixed gas source and a heat conducting assembly arranged in the burner cylinder; a plurality of first spray channels are annularly arranged in the burner barrel concentrically with the burner barrel; the heat conducting assembly comprises first heat conducting rings embedded around the peripheries of the first spraying channels and a plurality of first heat conducting plates arranged between the first spraying channels along the length direction of the first spraying channels, and one end of each first heat conducting plate is fixedly connected with the first heat conducting rings; a second heat-conducting ring is arranged at one side of the first spray channel close to the circle center of the burner tube and on the first spray channel in the inner ring of the burner tube, and one end of each first heat-conducting plate, which is far away from the first heat-conducting ring, is fixedly connected with the second heat-conducting ring; the outer ring of the burner cylinder is provided with an annular fin, and a plurality of heat conducting ends which penetrate through the burner cylinder and are fixedly connected with the first heat conducting ring are fixed on the annular fin; and an arc nozzle is arranged at one end of the burner cylinder, which is far away from a mixed gas source.

Further, a second spray channel is arranged at the center of the burner cylinder; and a plurality of second heat-conducting plates are arranged between the second heat-conducting rings and the second spraying channel along the length direction of the second spraying channel, one end of each second heat-conducting plate is fixed on the second heat-conducting ring, and the other end of each second heat-conducting plate faces the second spraying channel.

Furthermore, a heat conducting strip is fixed at one end of the second heat conducting plate close to the second spraying channel along the length direction of the second spraying channel.

Furthermore, a blunt body is arranged in the second spraying channel.

Furthermore, the outer end of the burner tube is provided with a fire-resistant cover, and the fire-resistant cover is provided with a through hole communicated with the first spray channel and the second spray channel to form a nozzle.

Further, each nozzle converges gradually from an end near each nozzle channel to an outer end.

Further, a mixer is arranged at one end of the burner cylinder, which is connected with a mixed gas source, and the mixed gas is generated by mixing through the mixer; the gas outlet of the mixer is communicated with the burner barrel, one gas inlet is communicated with a gas source, and the other gas inlet is connected with a fan communicated with an external gas source.

Based on the technical scheme, the utility model discloses the technological effect that can realize does:

1. the utility model discloses a low NOx burner mixes in advance adds premixing device to the combustor, makes the burning more even thoroughly, reduces nitrogen oxide's production to add heat-conducting component, further reduce heating power nitrogen oxide's formation.

2. The utility model discloses a low NOx burner mixes in advance has embedded the heat conduction element at different levels along spouting the way in a nozzle section of thick bamboo, has formed a holistic heat conduction subassembly in a nozzle section of thick bamboo, makes inside heat can transmit the outside more fast, and bulk temperature is more even, prevents local overheat.

3. The utility model discloses a mix low nitrogen combustor in advance, annular fin locates a nozzle section of thick bamboo outside, dispels the heat through the air flow, and the air current that the combustor during operation produced can promote the air flow of annular fin department, promotes the outside transfer of a nozzle section of thick bamboo inside heat, and the burning load is big more, and the radiating effect also increases to some extent.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A' of the present invention;

FIG. 3 is a schematic left view of the present invention

In the figure: 1-a fan; 2-a mixer; 3-a burner barrel; 31-a first spray channel; 32-a second spray channel; 33-bluff body; 34-a fire resistant cover; 35-a nozzle; 36-an annular fin; 37-arc nozzle; 4-a thermally conductive assembly; 41-a first thermally conductive ring; 42-a first thermally conductive plate; 43-a second thermally conductive ring; 44-a second thermally conductive plate; 45-heat conducting strip.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely illustrative of some, but not all, embodiments of the invention.

As shown in fig. 1 to 3, the present embodiment provides a premix low-nitrogen burner, which includes a burner barrel 3 communicated with a mixed gas source and a heat conducting assembly 4 disposed in the burner barrel 3. A plurality of first spray channels 31 are annularly arranged in the burner barrel 3 concentrically with the burner barrel 3. The heat conducting assembly 4 includes a first heat conducting ring 41 embedded around the periphery of the first spraying channel 31 and a plurality of first heat conducting plates 42 arranged between the first spraying channels 31 along the length direction of the first spraying channel 31, wherein one end of each first heat conducting plate 42 is fixedly connected with the first heat conducting ring 41. The first spout 31 is close to the center of a circle of the burner barrel 3, the first spout 31 of the inner ring of the burner barrel 3 is provided with a second heat-conducting ring 43, and one end of each first heat-conducting plate 42 far away from the first heat-conducting ring 41 is fixedly connected with the second heat-conducting ring 43. An annular fin 36 is arranged on the outer ring of the burner barrel 3, and a plurality of heat conduction ends which penetrate through the burner barrel 3 and are fixedly connected with the first heat conduction ring 41 are fixed on the annular fin 36. An arc nozzle 37 is arranged at one end of the burner barrel 3 far away from the mixed gas source.

Preferably, a second nozzle channel 32 is further provided at the center of the burner barrel 3. A plurality of second heat-conducting plates 44 are disposed between the second heat-conducting ring 43 and the second nozzle 32 along the length direction of the second nozzle 32, one end of each second heat-conducting plate 44 is fixed on the second heat-conducting ring 43, and the other end faces the second nozzle 32. Preferably, a heat conducting strip 45 is fixed to one end of the second heat conducting plate 44 close to the second nozzle 32 along the length direction of the second nozzle 32. Preferably, a blunt body 33 is provided in the second nozzle 32.

Preferably, a fire-resistant cover 34 is provided at the outer end of the burner cylinder 3, and a through hole penetrating the first and

second nozzle passages

31 and 32 is provided in the fire-resistant cover 34 to form a nozzle 35. Preferably, each nozzle 35 converges from an end adjacent each jet channel to an outer end.

Preferably, a mixer 2 is arranged at one end of the burner barrel 3 connected with a mixed gas source, and the mixed gas is generated by mixing through the mixer 2. The gas outlet of the mixer 2 is communicated with the burner barrel 3, one gas inlet is communicated with a gas source, and the other gas inlet is connected with a fan 1 communicated with an external gas source.

Based on foretell structure, the utility model discloses a low nitrogen burner in advance starts fan 1 to according to required mixing ratio to leading to the gas in 2 mixers, make gas and air intensive mixing, reduce the harmful gas that incomplete combustion produced, then the electric arc that produces through electric arc mouth 37 lights nozzle 35 department. The temperature of the central flame is increased due to a large amount of heat generated by combustion, and the temperature of the burner cylinder 3 is increased, the temperature of the burner cylinder 3 is gradually accumulated near the center of the burner cylinder 3 due to the fact that the burner cylinder is far away from the outer side, and a temperature difference is formed between the center of the burner cylinder 3 and the outer side, so that the heat conducting strips 45, the second heat conducting rings 43 and the first heat conducting rings 41 arranged along the length of the first spraying channel 31 and the second spraying channel 32 fully absorb the heat generated at the spraying channels, and then the heat is transmitted to the second heat conducting plates 44, the second heat conducting rings 43, the first heat conducting plates 42 and the first heat conducting rings 41 through the heat conducting strips 45 in sequence and then transmitted to the outer annular fins 36 to be cooled by air, and the air flow generated by combustion promotes the air flow at the periphery of the burner cylinder 3, promotes the cooling at the annular fins 36, and reduces the generation.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The premixing low-nitrogen combustor is characterized by comprising a burner barrel (3) communicated with a mixed gas source and a heat conducting assembly (4) arranged in the burner barrel (3); a plurality of first spray channels (31) are annularly arranged in the burner tube (3) concentrically with the burner tube (3); the heat conducting assembly (4) comprises a first heat conducting ring (41) embedded around the periphery of the first spraying channel (31) and a plurality of first heat conducting plates (42) arranged between the first spraying channels (31) along the length direction of the first spraying channel (31), and one end of each first heat conducting plate (42) is fixedly connected with the first heat conducting ring (41); a second heat-conducting ring (43) is arranged at one side of the first spraying channel (31) close to the circle center of the burner barrel (3) and on the first spraying channel (31) of the inner ring of the burner barrel (3), and one end, far away from the first heat-conducting ring (41), of each first heat-conducting plate (42) is fixedly connected with the second heat-conducting ring (43); an annular fin (36) is arranged on the outer ring of the burner barrel (3), and a plurality of heat conduction ends which penetrate through the burner barrel (3) and are fixedly connected with a first heat conduction ring (41) are fixed on the annular fin (36); and an arc nozzle (37) is arranged at one end of the burner barrel (3) far away from the mixed gas source.

2. The premixing low-nitrogen burner of claim 1, characterized in that a second nozzle (32) is further arranged at the center of the burner barrel (3); a plurality of second heat conducting plates (44) are arranged between the second heat conducting ring (43) and the second spraying channel (32) along the length direction of the second spraying channel (32), one end of each second heat conducting plate (44) is fixed on the second heat conducting ring (43), and the other end faces the second spraying channel (32).

3. The premix low-nitrogen burner of claim 2, wherein a heat conducting strip (45) is fixed to one end of the second heat conducting plate (44) close to the second nozzle (32) along a length direction of the second nozzle (32).

4. The premixed low-nitrogen burner according to claim 2, wherein a bluff body (33) is provided in the second injection passage (32).

5. The premixing low-nitrogen burner of claim 1, characterized in that a fire-resistant cover (34) is arranged at the outer end of the burner barrel (3), and a through hole which is communicated with the first injection passage (31) and the second injection passage (32) is arranged on the fire-resistant cover (34) to form a nozzle (35).

6. The premixed low NOx burner of claim 5 wherein each nozzle (35) converges from an end near each nozzle channel to an outer end.

7. The premixing low-nitrogen burner of any one of claims 1 to 6, characterized in that a mixer (2) is arranged at one end of the burner barrel (3) connected with a mixed gas source, and the mixed gas is generated by mixing through the mixer (2); the gas outlet of the mixer (2) is communicated with the burner tube (3), one gas inlet is communicated with a gas source, and the other gas inlet is connected with a fan (1) communicated with an external gas source.