Multi-fuel burner

Abstract

The utility model provides a multi-fuel burner which is characterized in that an air inlet chamber, a connecting chamber and a burning chamber are arranged in a shell, the air inlet chamber is communicated with the burning chamber through the connecting chamber, and an air inlet communicated with the air inlet chamber is arranged on the shell; the fuel spray gun is used for conveying fuel into the connecting cavity, the fuel spray gun comprises an outer pipe and an inner core pipe, the inner core pipe is fixed in the outer pipe, an interlayer space is reserved between the outer pipe and the inner core pipe, a first fuel outlet used for being communicated with the connecting cavity is formed in the outer pipe, and a first fuel inflow port is formed in the circumferential surface of the outer pipe; the inner core pipe is provided with a second fuel outlet used for being communicated with the connecting cavity. The end, away from the second fuel outlet, of the inner core pipe is provided with a second fuel inflow port. The ignition spray gun is installed on the shell, and the ignition end of the ignition spray gun extends into the air inlet cavity. Fuel is conveyed by switching the outer pipe or the inner core pipe, the burner does not need to stop fire, and continuous work of the burner can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, specifically to a multi-fuel burner. Background Technology

[0002] Gas burners use natural gas and other gases as fuel and are characterized by complete combustion, high combustion temperature, and easy combustion control. They are widely used in various industries, such as petrochemicals, building materials, power, textiles, printing and dyeing, steel, metallurgy, machinery, and food.

[0003] Burners are widely used in industrial equipment to provide heat. In many heating applications, continuous operation of the burner without extinguishing is required. However, due to the limitations of a single fuel supply, this cannot meet the needs of continuous production. Therefore, the technical problem to be solved in this application is: how to enable the burner to burn continuously. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a multi-fuel burner that delivers fuel by switching between the outer tube and the inner core tube. When changing the fuel medium, the burner does not need to be shut down, and the burner can continue to work.

[0005] Specifically, this utility model proposes a multi-fuel burner, comprising:

[0006] The housing has an air intake chamber, a connecting chamber, and a combustion chamber inside. The air intake chamber communicates with the combustion chamber through the connecting chamber. The housing is provided with an air inlet that communicates with the air intake chamber.

[0007] A fuel nozzle is provided for delivering fuel to the connecting chamber. The fuel nozzle includes an outer tube and an inner core tube. The inner core tube is fixed inside the outer tube, and a space is provided between the outer tube and the inner core tube. The outer tube communicates with the connecting chamber through a first fuel outlet, and a first fuel inlet is provided on the circumferential surface of the outer tube. The inner core tube is provided with a second fuel outlet for communicating with the connecting chamber, and a second fuel inlet is provided at the end of the inner core tube away from the second fuel outlet.

[0008] An ignition spray gun is mounted on the housing, and the ignition end of the ignition spray gun extends into the air inlet chamber.

[0009] Preferably, a burner panel is detachably provided on the housing, and the ignition nozzle is mounted on the burner panel.

[0010] Preferably, a viewing mirror or flame detection device is installed on the burner panel.

[0011] Preferably, the number of fire-observing mirrors is multiple.

[0012] Preferably, the number of fire-observing mirrors is three.

[0013] Preferably, the air inlet chamber is provided with a blade assembly, which is used to cause the air flowing into the air inlet chamber to swirl.

[0014] Preferably, a sealing portion is provided between the outer tube and the inner core tube, and the sealing portion is provided with a second fuel outlet.

[0015] Preferably, the second fuel outlet is arranged in an inclined direction, with the starting end of the second fuel outlet close to the inner core tube and the ending end of the second fuel outlet away from the inner core tube.

[0016] Preferably, there are multiple second fuel outlets, which are evenly distributed in a circumferential array with the axis of the inner core tube as the reference.

[0017] Preferably, the end of the outer tube away from the second fuel outlet is fixed to the inner core tube by a flange, the inner ring of the flange is sealed and fixed on the circumferential surface of the inner core tube, and the end of the outer tube away from the second fuel outlet is sealed and fixed to the flat part of the flange. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional structural diagram of the multi-fuel burner proposed in this embodiment;

[0020] Figure 2 This is a side view structural diagram of the multi-fuel burner in this embodiment;

[0021] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0022] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0023] Figure 5 This is a schematic diagram of the internal structure of the multi-fuel burner in this embodiment;

[0024] Figure 6 yes Figure 3 A magnified schematic diagram of the structure at point C in the middle;

[0025] Figure 7 yes Figure 3A magnified schematic diagram of the structure at point D.

[0026] The reference numerals used in the attached figures are as follows:

[0027] 11-Shell; 12-Air inlet chamber; 13-Connecting chamber; 14-Combustion chamber; 15-Outer tube; 16-Inner core tube; 17-First fuel outlet; 18-First fuel inlet; 19-Second fuel outlet; 20-Second fuel inlet; 21-Ignition nozzle; 22-Burner panel; 23-Observation mirror; 24-Blade assembly; 25-Sealing part; 26-Flange; 27-Flat surface part; 28-Fuel nozzle; 29-Air inlet. Detailed Implementation

[0028] The technical solutions of this application will be further described below with reference to specific embodiments, but this application is not limited to these embodiments.

[0029] like Figures 1 to 7 As shown, this embodiment proposes a multi-fuel burner, including:

[0030] The housing 11 has an air intake chamber 12, a connecting chamber 13 and a combustion chamber 14 inside. The air intake chamber 12 is connected to the combustion chamber 14 through the connecting chamber 13. The housing 11 is provided with an air inlet 29 that is connected to the air intake chamber 12.

[0031] Fuel nozzle 28 is used to deliver fuel to connecting chamber 13. Fuel nozzle 28 includes an outer tube 15 and an inner core tube 16. The inner core tube 16 is fixed inside the outer tube 15, and there is a space between the outer tube 15 and the inner core tube 16. The outer tube 15 is connected to the connecting chamber 13 through a first fuel outlet 17. The outer tube 15 has a first fuel inlet 18 on its circumference. The inner core tube 16 has a second fuel outlet 19 for communicating with the connecting chamber 13. The end of the inner core tube 16 away from the second fuel outlet 19 has a second fuel inlet 20.

[0032] Ignition spray gun 21 is mounted on housing 11, and the ignition end of ignition spray gun 21 extends into air inlet chamber 12.

[0033] The technical advantages of this solution are as follows: the fuel injector 28 adopts a sleeve structure, which can support the combustion of two different fuel media, ensuring that the burner does not go out in the combustion chamber, thereby maintaining the continuous operation of the burner.

[0034] The interlayer space between the outer tube 15 and the inner core tube 16 is used to transport the first fuel medium, and the inner core tube 16 is used to transport the second fuel medium.

[0035] Furthermore, the casing 11 is provided with an exhaust port that communicates with the combustion chamber 14.

[0036] Furthermore, a burner panel 22 is detachably provided on the housing 11, and an ignition torch 21 is mounted on the burner panel 22. A viewing mirror 23 is also mounted on the burner panel 22. The burner panel 22 is detachably installed on the mounting port of the housing 11, and the burner can be easily inspected and maintained by removing the burner panel 22.

[0037] In one embodiment of this invention, the number of fire-observing mirrors 23 is multiple. Further, the number of fire-observing mirrors 23 is three. Additionally, the fire-observing mirrors 23 can be replaced with flame detection devices.

[0038] As one embodiment of this example, the air intake chamber 12 is provided with a blade assembly 24, which has multiple blades. The blade assembly 24 is used to cause the air flowing into the air intake chamber 12 to swirl, thereby improving the mixing efficiency of air and fuel medium and promoting the complete combustion of fuel medium.

[0039] As one embodiment of this invention, a sealing portion 25 is provided between the outer tube 15 and the inner core tube 16, and a second fuel outlet 19 is provided on the sealing portion 25.

[0040] Furthermore, the second fuel outlet 19 is arranged in an inclined direction, with the starting end of the second fuel outlet 19 close to the inner core tube 16 and the ending end of the second fuel outlet 19 far away from the inner core tube 16.

[0041] The technical advantage of this solution is that it keeps the first and second fuel media far apart during discharge, so as to facilitate mixing with air and improve fuel efficiency.

[0042] Furthermore, there are multiple second fuel outlets 19, which are uniformly distributed in a circular array with the axis of the inner core tube 16 as the reference. The technical effect of this solution is to further improve the combustion efficiency of the fuel.

[0043] Furthermore, the end of the outer tube 15 furthest from the second fuel outlet 19 is fixed to the inner core tube 16 via a flange 26. The inner ring of the flange 26 is sealed and fixed on the circumferential surface of the inner core tube 16, and the end of the outer tube 15 furthest from the second fuel outlet 19 is sealed and fixed to the flat portion 27 of the flange 26.

[0044] Working principle: This scheme uses the space between the outer tube 15 and the inner core tube 16 to transport the first fuel medium, and the inner core tube 16 to transport the second fuel medium. Under the action of the ignition torch 21, the first fuel medium and / or the second fuel medium react with the swirling air to increase the tangential velocity of the flame-retardant air, which can effectively maintain the stability of the flame.

[0045] In addition, by switching between the outer tube 15 and the inner core tube 16 to deliver fuel, the burner does not need to be shut down when changing the fuel medium, thus enabling the burner to operate continuously.

[0046] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A multi-fuel burner, characterized in that, The application relates to a fuel burner, which comprises the following parts: a shell (11), the inside of the shell (11) being provided with an air inlet chamber (12), a connecting chamber (13) and a combustion chamber (14), the air inlet chamber (12) being connected with the combustion chamber (14) through the connecting chamber (13), and the shell (11) being provided with an air inlet (29) penetrating through the air inlet chamber (12); a fuel injection lance (28) for delivering fuel into the connecting chamber (13), the fuel injection lance (28) comprising an outer tube (15) and an inner core tube (16), the inner core tube (16) being fixed in the inner part of the outer tube (15), and a space being left between the outer tube (15) and the inner core tube (16), the outer tube (15) being connected with the connecting chamber (13) through a first fuel outlet (17), and the peripheral surface of the outer tube (15) being provided with a first fuel inlet (18); the inner core tube (16) being provided with a second fuel outlet (19) penetrating through the connecting chamber (13), and the end of the inner core tube (16) away from the second fuel outlet (19) being provided with a second fuel inlet (20); an ignition lance (21) mounted on the shell (11), and the ignition end of the ignition lance (21) extending into the air inlet chamber (12).

2. The multi-fuel burner of claim 1, wherein, A burner panel (22) is detachably arranged on the shell (11), and the ignition lance (21) is mounted on the burner panel (22).

3. The multi-fuel burner of claim 2, wherein, A fire watching mirror (23) or a flame detecting device is mounted on the burner panel (22).

4. The multi-fuel burner of claim 3, wherein, The number of the fire watching mirrors (23) is plural.

5. The multi-fuel burner of claim 4, wherein, The number of the fire watching mirrors (23) is three.

6. The multi-fuel burner of claim 1, wherein, A vane assembly (24) is arranged in the air inlet chamber (12), and the vane assembly (24) is used for swirling the air flowing into the air inlet chamber (12).

7. The multi-fuel burner of claim 1, wherein, A closure part (25) is arranged between the outer tube (15) and the inner core tube (16), and the second fuel outlet (19) is arranged on the closure part (25).

8. The multi-fuel burner of claim 7, wherein, The second fuel outlet (19) is arranged along an inclined direction, the starting end of the second fuel outlet (19) is close to the inner core tube (16), and the terminal end of the second fuel outlet (19) is away from the inner core tube (16).

9. The multi-fuel burner of claim 8, wherein, The number of the second fuel outlets (19) is plural, and the plural second fuel outlets (19) are uniformly distributed in a circumferential array based on the axis of the inner core tube (16).

10. The multi-fuel burner of claim 9, wherein, The end of the outer tube (15) away from the second fuel outlet (19) is fixed with the inner core tube (16) through a flange (26), the inner ring of the flange (26) is sealingly fixed on the peripheral surface of the inner core tube (16), and the end of the outer tube (15) away from the second fuel outlet (19) is sealingly fixed with the planar part (27) of the flange (26).

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