Multifunctional natural gas long flame burner

Abstract

The utility model discloses a multifunctional natural gas long-flame burner, which belongs to the technical field of natural gas long-flame burners and comprises a shell, a natural gas structure is arranged at the center of the inside of the shell, a fixing disc is arranged at the center of the front end face of the shell, and a burner structure is arranged at the center of the inside of the shell. The burner structure comprises a flame guide pipe, the flame guide pipe is arranged at the center of the rear end face of the fixing disc, the inner side wall of the flame guide pipe is sleeved with a self-cleaning layer, the inner side wall of the self-cleaning layer is sleeved with a wear-resisting layer, and a supporting structure is arranged at the position, close to the front portion, of the center of the outer side wall of the shell. Connecting structures are arranged on the rear portions of the centers of the lower end faces of the shell and the burner nozzle structure, an air adjusting opening is formed between the two connecting structures on the rear portion of the center of the outer side wall of the flame guide pipe, in addition, impurities and the like generated by combustion in the flame guide pipe can be prevented from being attached, the pipeline is kept smooth, the blocking risk is reduced, and the service life of the flame guide pipe is prolonged. And the maintenance cost and the downtime are reduced.

Description

A multifunctional natural gas long flame burner Technical Field

[0001] This utility model belongs to the technical field of natural gas long flame burners, specifically a multifunctional natural gas long flame burner. Background Technology

[0002] With the continuous advancement of industrial technology and increasingly stringent environmental protection requirements, combustion equipment is being used more and more widely in industrial production, especially in high-temperature processes such as metallurgy, ceramics, glass, and chemicals. The selection of combustion equipment directly affects production efficiency and product quality. Natural gas, as a clean and efficient energy source, has gradually become the preferred fuel for industrial combustion due to its low pollutant content in combustion products. In industrial production, different processes have different requirements for flame length and temperature distribution. In the heating furnace of the steel industry, a longer flame is required to achieve uniform heating, while in the ceramic sintering process, a high-temperature short flame is required to ensure sintering quality.

[0003] The existing multi-functional natural gas long-flame burner has the following main shortcomings:

[0004] The existing multi-functional natural gas long flame burner is prone to blockage due to impurities generated during combustion adhering to the flame guide tube, requiring frequent cleaning and maintenance. Facing the scouring of high-temperature, high-speed airflow and particle friction, it lacks effective wear-resistant measures, making key burner components prone to wear and limiting their service life. This not only increases maintenance costs but may also lead to unexpected shutdowns due to component damage, affecting production continuity. Furthermore, it is difficult to make precise adjustments based on actual conditions under different operating conditions and heating requirements, resulting in poor combustion performance, low energy utilization, and the potential for incomplete combustion and the generation of harmful gases. Summary of the Invention

[0005] To overcome the above-mentioned defects, this utility model provides a multifunctional natural gas long-flame burner, which solves the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional natural gas long-flame burner, comprising: a shell, a natural gas structure at the center of the interior of the shell, a fixing plate at the center of the front end face of the shell, and a burner structure at the center of the interior of the shell; the burner structure includes a flame guide tube, which is disposed at the center of the rear end face of the fixing plate, and a self-cleaning layer is sleeved on the inner wall of the flame guide tube, and a wear-resistant layer is sleeved on the inner wall of the self-cleaning layer;

[0007] A support structure is provided at the front center of the outer wall of the shell, and a connection structure is provided at the rear center of the lower end face of the shell and the burner structure. An air adjustment port is provided between the two connection structures at the rear center of the outer wall of the flame guide tube.

[0008] As a further embodiment of this utility model: the support structure includes a support frame, which is located at the front center of the outer side wall of the shell, and inner supports are provided at both sides of the center of the lower end face of the support frame.

[0009] As a further embodiment of this utility model: the natural gas structure includes a cavity, which is disposed between the inner wall of the shell and the outer wall of the flame guide tube. The cavity is provided with wires on both sides near the center. The two wires pass through the rear end face of the fixed plate and the front end face of the two second flanges respectively and lead to the rear end face of the two second flanges. Spark plugs are fixedly connected to the ends of the wires.

[0010] As a further embodiment of this utility model: the two connection structures include a natural gas inlet, the natural gas inlet is located at the rear center of the lower end face of the shell, the inner wall of the natural gas inlet is fitted with a fire-resistant layer, the inner wall of the fire-resistant layer is fitted with a heat insulation layer, the outer wall of the flame guide tube is provided with an air inlet at the rear center, the inner wall of the air inlet is fitted with a flow guide layer, and a first flange is provided at the center of the lower end face of both the natural gas inlet and the air inlet.

[0011] As a further embodiment of this invention, a flame sensor is provided at the center of the rear end face of the flame guide tube.

[0012] As a further embodiment of this invention: the air adjustment port is rotatably connected to the outer wall of the flame guide tube.

[0013] As a further embodiment of this utility model: the two inner support frames and the support frame are mutually adapted.

[0014] As a further embodiment of this utility model: a second flange is provided at the rear center of the outer side wall of the flame guide tube and at the center of the rear end face of the shell.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model, through the flame guide tube, self-cleaning layer and wear-resistant layer, the self-cleaning layer helps to prevent the adhesion of impurities generated by combustion inside the flame guide tube, keep the pipeline unobstructed, reduce the risk of blockage, reduce maintenance costs and downtime, and the wear-resistant layer can resist the scouring of high temperature and high speed airflow and possible particle friction, effectively extending the service life of the flame guide tube, ensuring stable operation of the burner, and is suitable for industrial environments with long-term and high-intensity operation.

[0017] 2. This utility model uses a flame sensor to monitor the flame status in real time, preventing safety accidents caused by gas leaks. Through the air adjustment port, the amount of air entering the burner can be flexibly adjusted. According to different working conditions and combustion requirements, the mixing ratio of air and natural gas can be precisely controlled to achieve good combustion effect, improve energy utilization efficiency, and meet the needs of various complex industrial working conditions. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural diagram of this utility model;

[0019] Figure 2 is a three-dimensional cross-sectional view of the present invention;

[0020] Figure 3 is a schematic diagram of the three-dimensional disassembled structure of this utility model;

[0021] Figure 4 is an enlarged view of point A in Figure 3.

[0022] In the diagram: 1. Shell; 2. Natural gas structure; 201. Cavity; 202. Wire; 203. Spark plug; 3. Fixed plate; 4. Burner structure; 401. Flame guide tube; 402. Self-cleaning layer; 403. Wear-resistant layer; 5. Support structure; 501. Support frame; 502. Inner support frame; 6. Connection structure; 601. Natural gas inlet; 602. Fire-resistant layer; 603. Heat insulation layer; 604. Air inlet; 605. Flow guide layer; 606. First flange; 7. Second flange; 8. Air adjustment port; 9. Flame sensor. Detailed Implementation

[0023] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0024] As shown in Figures 1-4, this utility model provides a technical solution:

[0025] A multifunctional natural gas long-flame burner, comprising:

[0026] A housing 1 has a natural gas structure 2 at its center, a fixed plate 3 at its front center, and a burner structure 4 at its center. The burner structure 4 includes a flame guide tube 401, which is located at the center of the rear end face of the fixed plate 3. A self-cleaning layer 402 is fitted onto the inner wall of the flame guide tube 401, and a wear-resistant layer 403 is fitted onto the inner wall of the self-cleaning layer 402. A support structure 5 is located at the front center of the outer wall of the housing 1. Connection structures 6 are located at the rear center of both the housing 1 and the burner structure 4. An air adjustment port 8 is located between the two connection structures 6 at the rear center of the outer wall of the flame guide tube 401. A flame sensor 9 is located at the center of the rear end face of the flame guide tube 401. The air adjustment port 8 is rotatably connected to the outer wall of the flame guide tube 401. A second flange 7 is provided at the rear center of the outer wall of the upper flame guide tube 401 and at the center of the rear end face of the housing 1. After ignition, the mixed gas burns inside the flame guide tube 401. The self-cleaning layer 402 may help prevent impurities generated by combustion from adhering to the inside of the flame guide tube 401, keeping the pipeline unobstructed. The wear-resistant layer 403 can resist the wear caused by high temperature and high speed airflow, extending the service life of the flame guide tube 401. The flame is relatively long during combustion, forming a long flame effect, which is suitable for some situations that require long flame heating. The flame sensor 9 is used to monitor the flame status, such as whether the flame is burning normally, the flame intensity, etc., and make corresponding control adjustments based on the monitoring results, such as alarming when the flame is extinguished or taking measures to re-ignite.

[0027] The support structure 5 includes a support frame 501, which is located at the front center of the outer wall of the housing 1. The support frame 501 has inner supports 502 on both sides of the center of the lower end face of the support frame 501. The two inner supports 502 are adapted to the support frame 501. Through the support frame 501 and the inner supports 502, the burner can be provided with stable support, so that it can maintain a stable position and posture during operation.

[0028] The natural gas structure 2 includes a cavity 201, which is located between the inner wall of the shell 1 and the outer wall of the flame guide tube 401. Inside the cavity 201, there are two wires 202 on both sides near the center. The two wires 202 pass through the rear end face of the fixed plate 3 and the front end face of the two second flanges 7 respectively, and are connected to the rear end face of the two second flanges 7. Spark plugs 203 are fixedly connected to the ends of the wires 202 on both sides near the center of the cavity 201. Current is conducted through the wires 202 on both sides near the center of the cavity 201, and an electric spark is generated through the spark plugs 203 to provide ignition energy for the mixture of natural gas and air, so that the mixture can ignite and burn.

[0029] The two connecting structures 6 include a natural gas inlet 601, which is located at the rear center of the lower end face of the shell 1. A refractory layer 602 is fitted inside the inner wall of the natural gas inlet 601, and a heat insulation layer 603 is fitted inside the inner wall of the refractory layer 602. An air inlet 604 is located at the rear center of the outer wall of the flame guide tube 401, and a flow guide layer 605 is fitted inside the inner wall of the air inlet 604. A first flange 606 is located at the center of the lower end face of both the natural gas inlet 601 and the air inlet 604. Natural gas enters the burner through the natural gas inlet 601. At the same time, the refractory layer 602 can withstand high temperatures to prevent the burner structure 4 from being damaged by high temperatures, while the heat insulation layer 603 can reduce heat loss and ensure the stability of the burner's operation and energy utilization efficiency. Air enters through the air inlet 604, and the flow guide layer 605 can make the incoming air flow more regular, which is conducive to mixing with natural gas. The air adjustment port 8 can adjust the amount of incoming air to meet the air volume required under different working conditions to achieve good combustion. By adjusting the ratio of air volume to natural gas, the intensity of the combustion reaction can be controlled.

[0030] The working principle of this utility model is as follows:

[0031] Natural gas enters the burner through the natural gas inlet 601. The refractory layer 602 withstands high temperatures, preventing damage to the burner structure 4. The insulation layer 603 reduces heat loss and improves energy efficiency. Air enters through the air inlet 604. The guide layer 605 ensures more regular airflow, facilitating mixing with natural gas. The air adjustment port 8 is rotatable, allowing for flexible adjustment of the air volume entering the burner. This enables precise control of the air-to-natural gas mixing ratio based on different operating conditions and combustion requirements. Current is conducted through the wires 202 on both sides of the center of the cavity 201, and an electric spark is generated through the spark plug 203, providing ignition energy to the natural gas-air mixture and bringing it to the ignition temperature. The temperature rises, thus initiating a combustion reaction. The ignited gas mixture burns completely within the flame guide tube 401. Through the self-cleaning layer 402 and the wear-resistant layer 403, the self-cleaning layer 402 helps prevent impurities generated during combustion from adhering to the inner wall of the flame guide tube 401, keeping the pipe unobstructed and reducing the risk of blockage. The wear-resistant layer 403 can withstand the scouring of high-temperature, high-speed airflow and possible particle friction, extending the service life of the flame guide tube 401 and ensuring stable burner operation. The flame produced by combustion has a long flame shape, which is suitable for some industrial processes with specific requirements for flame length, such as large heating furnaces or scenarios requiring a large heating range. The long flame can effectively increase the heating area, improve heat transfer efficiency, and make the heated object more evenly heated.

[0032] During combustion, the flame sensor 9 monitors the flame status in real time, such as whether the flame is burning normally, whether the flame intensity is stable, and whether the flame has extinguished. This monitoring data is fed back to the control system, which analyzes and judges the received signals. When the flame is abnormal, such as extinguished, the corresponding alarm mechanism can be triggered in time, and measures can be taken to restart the flame or safely stop the burner from working to prevent safety accidents caused by gas leakage. The support frame 501 and the two inner support frames 502 provide stable and reliable support for the burner as a whole, ensuring that the burner maintains the correct position and posture during operation, avoiding displacement or damage to the burner due to vibration or external force, and ensuring stable operation and good combustion effect of the burner.

[0033] Furthermore, the burner can be easily and tightly connected to external natural gas supply pipelines, air transmission pipelines, and other related equipment via the first flange 606 and the second flange 7. The bolt connection between the first flange 606 and the second flange 7 allows for quick installation and disassembly, facilitating equipment maintenance, repair, and replacement, while ensuring the sealing of the connection to prevent natural gas and air leakage.

[0034] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multifunctional natural gas long-flame burner, characterized in that, include: The shell (1) has a natural gas structure (2) at its center, a fixed plate (3) at the center of its front end face, and a burner structure (4) at its center. The burner structure (4) includes a flame guide tube (401) at the center of the rear end face of the fixed plate (3). The inner wall of the flame guide tube (401) is fitted with a self-cleaning layer (402) and a wear-resistant layer (403). A support structure (5) is provided at the front center of the outer wall of the shell (1). Both the shell (1) and the burner structure (4) have a connecting structure (6) at the rear center of their lower end faces. An air adjustment port (8) is provided between the two connecting structures (6) at the rear center of the outer wall of the flame guide tube (401).

2. The multifunctional natural gas long-flame burner according to claim 1, characterized in that: The support structure (5) includes a support frame (501), which is located at the front of the center of the outer wall of the shell (1). The support frame (501) is provided with inner support frames (502) at both sides of the center of the lower end face of the support frame (501).

3. A multifunctional natural gas long-flame burner according to claim 1, characterized in that: The natural gas structure (2) includes a cavity (201), which is located between the inner wall of the shell (1) and the outer wall of the flame guide tube (401). The cavity (201) is provided with wires (202) on both sides near the center of the cavity (201). The two wires (202) pass through the rear end face of the fixed plate (3) and the front end face of the two second flanges (7) respectively, and are connected to the rear end face of the two second flanges (7). The ends of the wires (202) are fixedly connected to spark plugs (203).

4. A multifunctional natural gas long-flame burner according to claim 1, characterized in that: The two connection structures (6) include a natural gas inlet (601), which is located at the rear center of the lower end face of the shell (1). The inner wall of the natural gas inlet (601) is fitted with a fire-resistant layer (602), and the inner wall of the fire-resistant layer (602) is fitted with a heat insulation layer (603). An air inlet (604) is located at the rear center of the outer wall of the flame guide pipe (401), and the inner wall of the air inlet (604) is fitted with a flow guide layer (605). A first flange (606) is provided at the center of the lower end face of both the natural gas inlet (601) and the air inlet (604).

5. A multifunctional natural gas long-flame burner according to claim 1, characterized in that: A flame sensor (9) is provided at the center of the rear end face of the flame guide tube (401).

6. A multifunctional natural gas long-flame burner according to claim 1, characterized in that: The air adjustment port (8) is rotatably connected to the outer wall of the flame guide tube (401).

7. A multifunctional natural gas long-flame burner according to claim 2, characterized in that: The two inner support frames (502) are adapted to each other with the support frame (501).

8. A multifunctional natural gas long-flame burner according to claim 1, characterized in that: The flame guide tube (401) is provided with a second flange (7) at the rear center of the outer wall and at the center of the rear end face of the shell (1).

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