Combustion structure for combustor

Abstract

The utility model relates to the technical field of combustors, and discloses a combustion structure for a combustor, which comprises an air pipe, a combustion cylinder, an ignition component and a combustion sleeve, the combustion cylinder is connected to one side of the air pipe; the combustion cylinder comprises an inner layer and an outer layer; a through hole is formed in the inner layer; a ventilation cavity is formed between the outer layer and the inner layer, and a connecting part communicated with the ventilation cavity is arranged on the outer layer; the ignition assembly is arranged in the through hole; a first fuel pipe is arranged in the ignition assembly; the combustion sleeve is connected to one side of the combustion cylinder. Through the arrangement of the ventilation cavity, one kind of fuel gas can be fully filled in the ventilation cavity and is uniformly discharged from the gas outlet pipe at the tail end of the ventilation cavity to form a plurality of fuel gas flows with certain kinetic energy, and at the moment, the other kind of fuel gas or fuel oil is also discharged from the first fuel pipe to a combustion area and collides with the fuel gas flows; the two kinds of fuel are fully mixed, so that the two kinds of fuel are more fully combusted in the combustion structure, the generation amount of oxynitride is reduced, and emission of pollutants is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a combustion structure for burners. Background Art

[0002] In existing combustion technologies, burners, as key devices for heat energy conversion, are widely used in various industrial production and daily life. The performance of burners directly affects combustion efficiency and the emission of environmental pollutants.

[0003] At present, when multiple gases are mixed and burned, existing burners usually install multiple sets of gas pipes for corresponding gases in the middle of the combustion tube, and introduce corresponding gases into the combustion area through the multiple sets of gas pipes, thereby realizing the mixed burning of multiple gases. However, in the process of mixing and burning multiple gases inside the above-mentioned combustion tube, uneven mixing often occurs, resulting in incomplete combustion in the combustion tube, and thus increasing the amount of nitrogen oxides generated.

[0004] Therefore, there is an urgent need for a combustion structure for a burner to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of the present invention is to provide a combustion structure for a burner to solve the problem of insufficient combustion of multiple gases inside the existing combustion tube, thereby increasing the amount of nitrogen oxides generated.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A combustion structure for a burner, comprising an air duct, a combustion barrel, an ignition assembly and a combustion sleeve; the combustion barrel is detachably connected to one side of the air duct; the combustion barrel comprises an inner layer and an outer layer; a through hole is provided in the inner layer; a ventilation cavity is provided between the outer layer and the inner layer, and a connecting portion connected to the ventilation cavity is provided on the outer layer; the ignition assembly is provided in the through hole and is used to ignite the mixed fuel at the output end of the combustion barrel; a first fuel pipe for gas or oil transmission is provided in the ignition assembly; the combustion sleeve is detachably connected to one side of the combustion barrel.

[0008] As a preferred solution of the combustion structure for a burner, the connecting portion is provided with a second fuel pipe for gas transmission; the second fuel pipe is threadedly connected to the connecting portion.

[0009] As a preferred solution for the combustion structure of a burner, the combustion tube is provided with multiple groups of equally spaced air outlet pipes on the side away from the air duct; the air outlet pipes are threadedly connected to the ventilation cavity, and the air outlet pipes are communicated with the ventilation cavity.

[0010] As a preferred solution for the combustion structure of a burner, the combustion tube is provided with a protrusion extending outward on the side close to the air duct; a fixing plate is connected to the protrusion; and the fixing plate is fixedly connected to the air duct.

[0011] As a preferred solution for the combustion structure of a burner, the fixing plate is provided with a plurality of groups of circumferentially distributed connection holes; the connection holes are connected to the air duct by screws.

[0012] As a preferred solution of the combustion structure for a burner, the ignition assembly includes a combustion head and an ignition electrode; the combustion head is arranged on the output end of the first fuel pipe and is located on one side of the combustion tube; the ignition electrode is sleeved on the outside of the first fuel pipe, and the output end of the ignition electrode is located outside the output end of the first fuel pipe.

[0013] As a preferred solution for the combustion structure of a burner, the combustion head is connected to a flame stabilizing disc; a disc hole is provided in the center of the flame stabilizing disc; and the first fuel pipe is coaxially arranged with the disc hole.

[0014] As a preferred solution of the combustion structure for a burner, the outer diameter of the flame stabilizing disk is not larger than the inner diameter of the inner layer.

[0015] As a preferred solution of the combustion structure for a burner, the burner head is provided with a plurality of mounting holes; the output end of the ignition electrode passes through the mounting holes and extends to the outside of the output end of the first fuel pipe.

[0016] As a preferred solution of the combustion structure for a burner, the combustion tube is provided with an inwardly recessed clamping portion on a side close to the combustion sleeve; the combustion sleeve is clamped and connected with the clamping portion.

[0017] The beneficial effects of the utility model are:

[0018] By providing a ventilation cavity, one of the gases can be fully filled in the ventilation cavity, and the gas is evenly discharged from the outlet pipe at the end of the ventilation cavity to form multiple gas flows with a certain kinetic energy. At this time, the other gas or fuel is also discharged from the first fuel pipe to the combustion area and collides with the gas flow, thereby achieving full mixing of the two fuels, allowing the two fuels to burn more fully in the combustion structure, thereby reducing the amount of nitrogen oxides generated and helping to reduce pollutant emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a combustion structure for a burner provided by the utility model;

[0020] Figure 2 A schematic diagram of the internal structure of the combustion tube provided by the utility model;

[0021] Figure 3 This is a side structural diagram of the combustion tube provided by the utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the ignition assembly provided by the utility model.

[0023] Among them, the reference numerals in the figures are:

[0024] 10. Air duct; 20. Combustion tube; 21. Inner layer; 22. Outer layer; 23. Ventilation cavity; 24. Connecting part; 25. Exhaust pipe; 26. Raised part; 27. Fixing plate; 28. Connecting hole; 30. Ignition assembly; 31. First fuel pipe; 32. Combustion head; 321. Mounting hole; 33. Ignition electrode; 34. Flame stabilizing disc; 40. Combustion sleeve; 41. Clamping part. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0026] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "up", "down", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and 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. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0030] In one embodiment of the present invention, Figure 1-4 As shown, a combustion structure for a burner is provided, comprising an air duct 10, a combustion barrel 20, an ignition assembly 30 and a combustion sleeve 40. The combustion barrel 20 is detachably connected to one side of the air duct 10. The combustion barrel 20 comprises an inner layer 21 and an outer layer 22. A through hole is provided in the inner layer 21. A ventilation cavity 23 is provided between the outer layer 22 and the inner layer 21, and a connecting portion 24 connected to the ventilation cavity 23 is provided on the outer layer 22. The ignition assembly 30 is provided in the through hole and is used to ignite the mixed fuel at the output end of the combustion barrel 20. A first fuel pipe 31 for transmitting gas or oil is provided in the ignition assembly 30. The combustion sleeve 40 is detachably connected to one side of the combustion barrel 20.

[0031] By providing the ventilation cavity 23, one of the gases can be fully filled in the ventilation cavity 23, and the gas is evenly discharged from the outlet pipe 25 at the end of the ventilation cavity 23 to form multiple gas flows with a certain kinetic energy. At this time, the other gas or fuel is also discharged from the first fuel pipe 31 to the combustion area and collides with the gas flow to achieve full mixing of the two fuels, so that the two fuels can be more fully burned in the combustion structure, thereby reducing the amount of nitrogen oxides generated and helping to reduce pollutant emissions.

[0032] Preferably, a second fuel pipe for gas transmission is provided on the connection portion 24. The second fuel pipe is threadedly connected to the connection portion 24. The vent cavity 23 is connected to the second fuel pipe via the connection portion 24, allowing the second fuel to be evenly distributed within the vent cavity 23. This helps ensure uniform discharge of the second fuel, facilitates subsequent mixing of the two fuels, and improves fuel mixing uniformity.

[0033] Preferably, multiple sets of equally spaced outlet pipes 25 are provided on the side of the combustion barrel 20 away from the air duct 10. The outlet pipes 25 are threadedly connected to the ventilation cavity 23 and communicate with the ventilation cavity 23. By providing equally spaced outlet pipes 25, the second fuel can be evenly discharged into the combustion barrel 20, further enhancing the mixing effect of the two fuels.

[0034] Preferably, the combustion barrel 20 is provided with an outwardly extending protrusion 26 on the side adjacent to the air duct 10. A fixing plate 27 is connected to the protrusion 26. The fixing plate 27 is fixedly connected to the air duct 10. The fixing plate 27 is provided with multiple groups of circumferentially distributed connection holes 28. The connection holes 28 are connected to the air duct 10 via screws. The fixing plate 27 connected to the protrusion 26 is fixedly connected to the air duct 10 via screws, which enhances the stability between the combustion barrel 20 and the air duct 10 and helps prevent the combustion barrel 20 from loosening during combustion.

[0035] Preferably, the ignition assembly 30 includes a burner head 32 and an ignition electrode 33. The burner head 32 is located at the output end of the first fuel pipe 31 and on one side of the burner tube 20. The ignition electrode 33 is sleeved onto the outside of the first fuel pipe 31, with the output end of the ignition electrode 33 located outside the output end of the first fuel pipe 31. When the two fuels mix, the ignition electrode 33 ignites the two fuels at the burner head 32, thereby igniting the burner.

[0036] Furthermore, a flame stabilizing disc 34 is connected to the burner head 32. A disc hole is centrally located in the disc 34. The first fuel pipe 31 is coaxially arranged with the disc hole. The flame stabilizing disc 34 prevents flame fluctuations and extinguishing, thereby improving combustion stability and reliability.

[0037] Furthermore, the outer diameter of the flame stabilizing disc 34 is not larger than the inner diameter of the inner layer 21. By setting the outer diameter of the flame stabilizing disc 34 not larger than the inner diameter of the inner layer 21, the outer diameter of the flame stabilizing disc 34 is prevented from being too large to affect the installation of the outlet pipe 25 on the combustion tube 20, thereby preventing interference between the two.

[0038] Furthermore, the burner head 32 is provided with multiple mounting holes 321. The output end of the ignition electrode 33 passes through the mounting holes 321 and extends to the outside of the output end of the first fuel pipe 31. The mounting holes 321 provide a tight connection between the mounting holes 321 and the ignition electrode 33, preventing the ignition electrode 33 from loosening and improving the stability of the ignition assembly 30.

[0039] Preferably, a recessed clip 41 is provided on the combustion barrel 20 near the combustion sleeve 40. The combustion sleeve 40 is engaged with the clip 41. The clip 41 facilitates quick positioning and fixing of the combustion sleeve 40 on the combustion barrel 20, simplifying the installation process of the combustion sleeve 40.

[0040] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A combustion structure for a burner, characterized in that: include: air ducts; A combustion tube, the combustion tube being detachably connected to one side of the air duct; the combustion tube comprising an inner layer and an outer layer; a through hole being provided in the inner layer; a ventilation cavity being provided between the outer layer and the inner layer; and a connecting portion being provided on the outer layer and communicating with the ventilation cavity; An ignition assembly is provided in the through hole and is used to ignite the mixed fuel at the output end of the combustion cylinder; a first fuel pipe for transmitting gas or oil is provided in the ignition assembly; A combustion sleeve is detachably connected to one side of the combustion tube.

2. The combustion structure for a burner according to claim 1, characterized in that: The connecting portion is provided with a second fuel pipe for gas transmission; the second fuel pipe is threadedly connected to the connecting portion.

3. The combustion structure for a burner according to claim 2, characterized in that: The combustion tube is provided with a plurality of groups of air outlet pipes distributed at equal intervals on a side away from the air duct; the air outlet pipes are threadedly connected to the ventilation cavity, and the air outlet pipes are communicated with the ventilation cavity.

4. The combustion structure for a burner according to claim 1, characterized in that: The combustion tube is provided with a protruding portion extending outward on one side close to the air duct; a fixing plate is connected to the protruding portion; and the fixing plate is fixedly connected to the air duct.

5. The combustion structure for a burner according to claim 4, characterized in that: The fixing plate is provided with a plurality of circumferentially distributed connection holes; the connection holes are connected to the air duct via screws.

6. The combustion structure for a burner according to any one of claims 1 to 5, characterized in that: The ignition assembly includes a combustion head and an ignition electrode; the combustion head is arranged on the output end of the first fuel pipe and is located on one side of the combustion tube; the ignition electrode is sleeved on the outside of the first fuel pipe, and the output end of the ignition electrode is located outside the output end of the first fuel pipe.

7. The combustion structure for a burner according to claim 6, characterized in that: The combustion head is connected to a flame stabilizing disc; a disc hole is provided in the center of the flame stabilizing disc; and the first fuel pipe is coaxially arranged with the disc hole.

8. The combustion structure for a burner according to claim 7, characterized in that: The outer diameter of the flame stabilizing disk is no greater than the inner diameter of the inner layer.

9. The combustion structure for a burner according to claim 8, characterized in that: The burner head is provided with a plurality of mounting holes; the output end of the ignition electrode passes through the mounting holes and extends to the outside of the output end of the first fuel pipe.

10. The combustion structure for a burner according to any one of claims 1 to 5, characterized in that: The combustion tube is provided with an inwardly recessed clamping portion on one side close to the combustion sleeve; the combustion sleeve is clamped and connected with the clamping portion.

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