Multi-channel fuel injection combustor structure

Abstract

The utility model relates to the field of combustors, and discloses a multi-channel fuel injection combustor structure which comprises a shell, a gas pipeline is fixedly connected to the middle of the shell, a fuel gas pipeline is fixedly connected to the middle of the gas pipeline, and a material uniformizing plate is fixedly connected between the shell and the gas pipeline. A rotational flow ring is fixedly connected between the shell and the gas pipeline, a plurality of mixing pipes penetrate through the side wall of the gas pipeline and are fixedly connected with the side wall of the gas pipeline, the mixing pipes are obliquely arranged, gas outlets of the mixing pipes are forwards arranged, and gas inlet pipes are fixedly connected to the upper part and the lower part of the rear side of the gas pipeline. According to the device, the gas pipeline is matched with the shell, the fuel gas pipeline, the mixing pipe, the material uniformizing plate and the like, so that the device can realize preliminary mixing of pulverized coal, biomass and combustion-supporting gas, the pulverized coal and the like can be discharged more uniformly, the pulverized coal and the like can be combusted more fully, and the device is more practical.

Description

Technical Field

[0001] This utility model relates to the field of burners, and more particularly to a burner structure with multi-channel fuel injection. Background Technology

[0002] A burner is a device that mixes fuel with oxygen (usually air) and ignites it to generate heat, power, or a light source. A multi-channel fuel injection burner is an advanced combustion device that simultaneously injects fuel through multiple nozzles, achieving efficient and uniform combustion. This type of burner is widely used in industries such as boilers and gas turbines, and is particularly suitable for applications with high requirements for combustion efficiency and emissions.

[0003] A search revealed Chinese Patent Publication No. CN222747256U, which discloses a multi-fuel mixing high-efficiency swirl burner based on oxygen-enriched and ammonia-blended combustion. The burner includes a pulverized coal channel, an inner secondary air channel and an outer secondary air channel at the outlet of the pulverized coal channel, arranged coaxially from the inside out. A combustion aid channel is coaxially located within the pulverized coal channel, and a central fuel channel is coaxially located within the combustion aid channel. The outlet ends of the combustion aid channel and the central fuel channel are aligned and both extend beyond the outlet end of the pulverized coal channel. A pulverized coal concentration ring is fixed within the pulverized coal channel, located inside the outlet end of the pulverized coal channel. This invention can blend pulverized coal, natural gas, gasification residue, semi-coke, biomass, and ammonia, improving combustion efficiency and reducing pollutant emissions, achieving low-carbon, waste-free combustion.

[0004] Although the aforementioned device, through the coordination of components such as the pulverized coal channel, the combustion aid channel, and the central fuel channel, enables the co-firing of pulverized coal, natural gas, gasification residue, semi-coke, biomass, and ammonia, thereby improving combustion efficiency and reducing pollutant emissions, the separate conveying of pulverized coal, semi-coke, and biomass can lead to uneven discharge of these materials, resulting in incomplete combustion. Therefore, it is not practical. To address this issue, a multi-channel fuel injection burner structure is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-channel fuel injection burner structure, which aims to improve the problem of uneven coal powder and biomass output leading to incomplete combustion in the existing technology that uses separate conveying of coal powder, semi-coke, biomass, etc.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-channel fuel injection burner structure, including a shell, a gas pipe fixedly connected to the middle of the shell, a gas combustion pipe fixedly connected to the middle of the gas pipe, a uniform feed plate fixedly connected between the shell and the gas pipe, a swirl ring fixedly connected between the shell and the gas pipe, and multiple mixing pipes fixedly connected through and to the side wall of the gas pipe, the mixing pipes being inclined and having their outlets facing forward.

[0007] As a further description of the above technical solution:

[0008] The gas pipeline is fixedly connected to both the upper and lower rear sides with air inlet pipes.

[0009] As a further description of the above technical solution:

[0010] The front side of the gas pipeline is fixed with multiple gas outlet pipes.

[0011] As a further description of the above technical solution:

[0012] Feed pipes are fixedly connected to both the left and right sides of the outer shell.

[0013] As a further description of the above technical solution:

[0014] The front of the gas pipeline is fixedly connected with multiple injection pipes.

[0015] As a further description of the above technical solution:

[0016] The exhaust pipe and the injection pipe are arranged alternately.

[0017] As a further description of the above technical solution:

[0018] The uniform material plate has multiple holes in its center.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, by setting up the cooperation between the gas pipeline and the outer shell, the gas pipeline, the mixing pipe, the uniform plate and other components, the device can realize the preliminary mixing of coal powder, biomass and combustion-supporting gas, which can make the coal powder and other materials more uniformly discharged and more fully combusted, making it more practical.

[0021] 2. In this utility model, by setting up the mutual cooperation between components such as the mixing pipe, the gas outlet pipe, and the injection pipe, the device can realize multi-channel injection, thereby coordinating the combustion of the burner more efficiently and evenly, and effectively improving the practicality of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a multi-channel fuel injection burner proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the overall rear three-dimensional structure of a multi-channel fuel injection burner structure proposed in this utility model.

[0024] Figure 3 This is a three-dimensional cross-sectional structural diagram of the outer shell, gas pipeline, and fuel pipeline of a multi-channel fuel injection burner structure proposed in this utility model.

[0025] Figure 4 This is a three-dimensional structural diagram showing the shell, gas pipeline, and fuel pipeline of a multi-channel fuel injection burner structure proposed in this utility model.

[0026] Legend:

[0027] 1. Outer shell; 2. Gas pipeline; 3. Gas pipeline; 4. Swirl ring; 5. Blending plate; 21. Inlet pipe; 22. Outlet pipe; 23. Mixing pipe; 11. Feed pipe; 31. Injection pipe; 51. Hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1-2 This utility model provides an embodiment of a multi-channel fuel injection burner structure, including a shell 1, which is the burner housing and is used to connect various components and to transport pulverized coal, biomass, etc. Feed pipes 11 are fixedly connected to the left and right sides of the shell 1 for feeding. A gas pipe 2 is fixedly connected to the middle of the shell 1 for transporting air, oxygen, etc. A gas pipeline 3 is fixedly connected to the middle of the gas pipe 2 for transporting fuel. A uniform material plate 5 is fixedly connected between the shell 1 and the gas pipe 2 to uniformly distribute pulverized coal and other materials, making the output more uniform and facilitating subsequent combustion operations, resulting in more complete combustion. A swirl ring 4 with multiple inclined blades is fixedly connected between the shell 1 and the gas pipe 2 to generate swirl.

[0030] Please see Figures 3-4The side wall of the gas pipe 2 is penetrated and fixedly connected with multiple mixing pipes 23, which are used to transport gas into the outer shell 1. The mixing pipes 23 are inclined and their outlets are forward-facing, which are used to assist in blowing the material in the outer shell 1 towards the uniform plate 5. The upper and lower parts of the rear side of the gas pipe 2 are fixedly connected with air inlet pipes 21, which are used to assist in air intake. The front side of the gas pipe 2 is fixed with multiple air outlet pipes 22, which are used to assist in sending out the gas that has not entered the outer shell 1 and to the central low oxygen zone.

[0031] Furthermore, the front of the gas pipeline 3 is fixedly connected with multiple injection pipes 31, which are used to cooperate with multi-directional uniform injection. The gas outlet pipe 22 and the injection pipes 31 are staggered to facilitate the fixation between the gas pipeline 3 and the gas pipeline 2. The material distribution plate 5 has multiple holes 51 in the middle, which are used to cooperate with material distribution.

[0032] Working principle: During use, pulverized coal, biomass, etc., enter the outer shell 1 through the feed pipe 11. At the same time, air or oxygen, etc., enter the gas pipe 2 through the air inlet pipe 21. Some of the gas is transported to the outer shell 1 through multiple mixing pipes 23, and blows the pulverized coal, biomass, etc. in the outer shell 1 towards the material plate 5. The gas that does not enter the outer shell 1 is transported to multiple outlet pipes 22 through the gas pipe 2 and sent out through the multiple outlet pipes 22. The gas discharged through the mixing pipe 23 will pass through the uniform material plate 5 mixed with pulverized coal and biomass. Multiple holes 51 on the uniform material plate 5 will cut and mix the gas and pulverized coal, thereby making the pulverized coal and biomass more evenly dispersed. The mixed pulverized coal and gas will be transported to the swirl ring 4 and pass through multiple inclined blades of the swirl ring 4. After passing through the swirl ring 4, the pulverized coal and gas will generate a swirl and be sent out of the outer shell 1. The fuel will be transported through the gas pipe 3 and sprayed out through multiple injection pipes 31 to cooperate with the combustion operation of the burner.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-channel fuel injection burner structure, comprising a housing (1), characterized in that: A gas pipe (2) is fixedly connected to the middle of the outer shell (1), a gas combustion pipe (3) is fixedly connected to the middle of the gas pipe (2), a uniform plate (5) is fixedly connected between the outer shell (1) and the gas pipe (2), and a swirl ring (4) is fixedly connected between the outer shell (1) and the gas pipe (2). The sidewall of the gas pipe (2) is connected to a mixing pipe (23) in multiple ways. The mixing pipe (23) is inclined and its outlet is facing forward.

2. The combustor structure with multi-channel fuel injection according to claim 1, characterized in that: The gas pipeline (2) is fixedly connected to the upper and lower parts of the rear side with an air inlet pipe (21).

3. The combustor structure with multi-channel fuel injection according to claim 1, characterized in that: The gas pipe (2) has multiple outlet pipes (22) fixed to its front side.

4. The combustor structure with multi-channel fuel injection according to claim 1, characterized in that: The left and right sides of the outer shell (1) are fixedly connected to feed pipes (11).

5. The combustor structure with multi-channel fuel injection according to claim 3, characterized in that: The front of the gas pipeline (3) is fixedly connected with multiple injection pipes (31).

6. The combustor structure with multi-channel fuel injection according to claim 5, characterized in that: The exhaust pipe (22) and the injection pipe (31) are arranged alternately.

7. The combustor structure with multi-channel fuel injection according to claim 1, characterized in that: The uniform material plate (5) has multiple holes (51) in the middle.

Images