Hydrogen-doped methanol hot air burner

Abstract

The utility model provides a hydrogen-doped methanol hot air burner which comprises a burner body, a barrel, a hydrogen pipeline and a methanol pipeline are arranged on the burner body, the hydrogen pipeline and the methanol pipeline are located in the barrel, a boss is arranged at one end of the barrel, and a heat conduction spiral pipe is arranged in the barrel. The hydrogen pipeline and the methanol pipeline penetrate through a cavity defined by the heat conduction spiral pipe, and a thermal telescopic sleeve is arranged at the bottom in the barrel. According to the utility model, the heat-conducting spiral pipe is arranged in the cylinder body, so that the methanol pipeline and the hydrogen pipeline can be conveniently heated, and the methanol pipeline and the hydrogen pipeline can heat passing methanol and hydrogen after being heated, so that the volatility of the methanol and the hydrogen during combustion can be improved, and the methanol and the hydrogen can be more fully combusted.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, specifically a hydrogen-blended methanol hot air burner. Background Technology

[0002] Methanol and hydrogen are currently popular green renewable energy sources. Hydrogen has the advantages of high calorific value per unit mass and complete combustion, while methanol is a low-cost liquid fuel. However, both methanol and hydrogen have certain drawbacks when used alone in combustion processes. Methanol suffers from problems such as easy flameout during atomization and the release of toxic gases when combustion is incomplete. Hydrogen, on the other hand, has issues such as high storage costs, high localized temperatures during combustion, short flames, and rapid combustion speed.

[0003] The utility model disclosed in CN218494972U proposes a hydrogen-blended methanol hot air burner, including a cylinder, a hydrogen pipeline, and a methanol pipeline. Combustion air is introduced into the cylinder. The hydrogen pipeline passes through the cylinder and is connected to a hydrogen nozzle at its end. The methanol pipeline passes through the cylinder and is connected to an atomizing air duct at its end. The atomizing air duct is connected to a cyclone vane with a boss on it. The atomizing nozzle at the end of the atomizing air duct is located inside the boss. The circumference of the boss has a combustion air outlet communicating with the cylinder. The hydrogen nozzle is located outside the boss. Compared with pure methanol combustion, this burner has better flame stability, more complete and efficient combustion, higher combustion temperature, and reduced carbon emissions. Compared with pure hydrogen combustion, it has better combustion economy and solves the problem of short flame in pure hydrogen combustion. The flame convection and radiation heat exchange effects are better.

[0004] However, the above-mentioned existing technology still has shortcomings in use: the pipes installed inside the cylinder for transporting hydrogen and methanol liquid do not have a heating function. In other words, hydrogen and methanol are in a low-temperature and low-activity state before combustion. This state makes the subsequent combustion stability of methanol and hydrogen poor, that is, it is difficult to burn completely and it is easy to produce pollution.

[0005] Therefore, this utility model provides a hydrogen-doped methanol hot air burner. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hydrogen-blended methanol hot air burner to solve the problems mentioned in the background art. This utility model has the function of heating the pipeline for transporting hydrogen and methanol liquid in the cylinder, thereby increasing the volatility of hydrogen and methanol liquid and enabling them to burn more completely.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen-blended methanol hot air burner, comprising a burner body, a cylinder body and hydrogen and methanol pipes located within the cylinder body, a boss at one end of the cylinder body, a heat-conducting spiral tube within the cylinder body, the hydrogen and methanol pipes passing through the cavity formed by the heat-conducting spiral tube, and a thermal expansion sleeve at the bottom of the cylinder body, which is fitted inside the heat-conducting spiral tube and, when extended, separates the heat-conducting spiral tube from the hydrogen and methanol pipes.

[0008] Furthermore, the thermal expansion sleeve includes a positioning sleeve and an actuating sleeve. The top of the positioning sleeve has an annular groove, and one end of the actuating sleeve is fixedly connected to a plug ring fitted in the annular groove. The plug ring and the annular groove are slidably sealed together, and the annular groove is filled with thermally expanding liquid.

[0009] Furthermore, the outer peripheral wall of the positioning sleeve is fixedly connected with heat-conducting fins that are evenly distributed in the circumferential direction.

[0010] Furthermore, a liquid pipe extending to the outside of the cylinder is fixedly connected to the outer peripheral wall of the positioning sleeve. A valve located outside the cylinder is connected in series on the liquid pipe, and one end of the liquid pipe is connected to the annular groove.

[0011] Furthermore, the outer peripheral wall and the inner peripheral wall of the plug ring are respectively fitted with an outer sealing rubber ring and an inner sealing rubber ring.

[0012] Furthermore, the outer peripheral wall of the actuating sleeve is provided with uniformly distributed heat-conducting holes.

[0013] Furthermore, a heat-conducting plate is fixedly sleeved on the outside of the cylinder near the boss, and the bottom of the heat-conducting plate is fixedly connected to one end of the heat-conducting spiral tube.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this invention, a heat-conducting spiral tube is installed inside the cylinder to facilitate the heating of the methanol and hydrogen pipelines. After the methanol and hydrogen pipelines are heated, they will heat the methanol and hydrogen passing through them, thereby increasing the volatility of methanol and hydrogen during combustion and enabling them to burn more completely.

[0016] In this invention, a thermal expansion sleeve is fitted inside the heat-conducting spiral tube. The thermal expansion sleeve will extend when heated, and the extended thermal expansion sleeve can separate the methanol pipeline and the hydrogen pipeline from the heat-conducting spiral tube. This arrangement can effectively avoid the safety hazards caused by overheating of the methanol pipeline and the hydrogen pipeline, making the combustion of this burner safer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydrogen-doped methanol hot air burner according to the present invention;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 This is a partial cross-sectional view of the thermal expansion sleeve of a hydrogen-doped methanol hot air burner according to this utility model.

[0020] In the diagram: 1. Burner body; 11. Cylinder; 12. Hydrogen pipe; 13. Methanol pipe; 14. Boss; 2. Heat-conducting spiral tube; 3. Thermal expansion sleeve; 31. Positioning sleeve; 311. Annular groove; 312. Heat-conducting fins; 313. Liquid pipe; 3131. Valve; 32. Actuating sleeve; 321. Plug ring; 323. Heat-conducting hole; 33. Outer sealing ring; 34. Inner sealing ring; 4. Heat-conducting plate. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 3 This utility model provides a technical solution: a hydrogen-blended methanol hot air burner, comprising a burner body 1, on which a cylinder 11 is provided and a hydrogen pipe 12 and a methanol pipe 13 are located within the cylinder 11. In use, hydrogen gas and methanol liquid flow through the hydrogen pipe 12 and methanol pipe 13 respectively. A boss 14 is provided at one end of the cylinder 11, wherein a cyclone air hole is opened at the front end of the boss 14. One end of the methanol pipe 13 is connected to the boss 14 through an atomizing air duct and an atomizing nozzle. The specific connection method can adopt the structure mentioned in the patent documents in the background art. This utility model is a partial improvement on the shortcomings of the burner body 1 in the prior art.

[0023] Specifically, a heat-conducting spiral tube 2 is installed inside the cylinder 11. The hydrogen pipeline 12 and the methanol pipeline 13 both pass through the cavity formed by the heat-conducting spiral tube 2. After the heat-conducting spiral tube 2 heats up, it heats the hydrogen pipeline 12 and the methanol pipeline 13. The increased temperature of the hydrogen pipeline 12 and the methanol pipeline 13 will heat the fuel flowing inside them, increase its volatility after being sprayed out, and thus enable it to burn completely.

[0024] Furthermore, a thermally expandable sleeve 3 is provided at the bottom of the cylinder 11. This thermally expandable sleeve 3 is fitted inside the heat-conducting spiral tube 2, and when it extends, it separates the heat-conducting spiral tube 2 from the hydrogen pipeline 12 and the methanol pipeline 13. The purpose of this arrangement is to prevent the hydrogen pipeline 12 and the methanol pipeline 13 from overheating and causing safety problems. The thermally expandable sleeve 3 has the function of extending when heated and contracting when cooled.

[0025] Specifically, the thermal expansion sleeve 3 includes a positioning sleeve 31 and an actuating sleeve 32. The top of the positioning sleeve 31 is provided with an annular groove 311. One end of the actuating sleeve 32 is fixedly connected to a plug ring 321 fitted in the annular groove 311. The plug ring 321 and the annular groove 311 are slidably sealed. In a preferred embodiment, the outer peripheral wall and the inner peripheral wall of the plug ring 321 are respectively fitted with an outer sealing ring 33 and an inner sealing ring 34. The arrangement of the outer sealing ring 33 and the inner sealing ring 34 makes the plug ring 321 and the annular groove 311 in a sealed fit. The annular groove 311 contains a thermally expanding liquid, which can be water. The outer peripheral wall of the positioning sleeve 31 is fixedly connected with circumferentially evenly distributed heat-conducting fins 312. The heat-conducting fins 312 function to increase the heating rate of the positioning sleeve 31. When the positioning sleeve 31 is heated, it will heat the water inside. When the water is heated and vaporized, it will push the actuating sleeve 32 to extend. The actuating sleeve 32 and the positioning sleeve 31 will separate the heat-conducting spiral tube 2 from the hydrogen pipe 12 and the methanol pipe 13. At this time, the actuating sleeve 32 will transfer a small amount of heat to the heat-conducting spiral tube 2 and the hydrogen pipe 12.

[0026] In this embodiment, a liquid pipe 313 with one end extending to the outside of the cylinder 11 is fixedly connected to the outer peripheral wall of the positioning sleeve 31. A valve 3131 located outside the cylinder 11 is connected in series on the liquid pipe 313. One end of the liquid pipe 313 is connected to the annular groove 311. This arrangement facilitates the replenishment of water into the annular groove 311.

[0027] In this embodiment, the outer peripheral wall of the actuating sleeve 32 is provided with uniformly distributed heat-conducting holes 323. This arrangement allows some of the thermal radiation energy generated by the heat-conducting spiral tube 2 to be transferred to the hydrogen pipeline 12 and the methanol pipeline 13 through the heat-conducting holes 323, ensuring that the hydrogen pipeline 12 and the methanol pipeline 13 can be stably heated.

[0028] In this embodiment, a heat-conducting plate 4 is fixedly sleeved on the outside of the cylinder 11 near the boss 14. The front end of the boss 14 is the area where the fuel is burned. When the fuel is burned, it will heat the heat-conducting plate 4. The bottom of the heat-conducting plate 4 is fixedly connected to one end of the heat-conducting spiral tube 2. That is to say, one end of the heat-conducting spiral tube 2 passes through the cylinder wall of the cylinder 11 and is fixedly connected to the heat-conducting plate 4. The heat-conducting plate 4 will transfer heat to the heat-conducting spiral tube 2.

[0029] Working principle: When in use, when the fuel control valve is opened, the fuel will be transferred to the boss 14 through the hydrogen pipeline 12 and the methanol pipeline 13. Then the ignition device is started, the fuel burns, the heat conduction plate 4 is rapidly heated, the heat conduction spiral tube 2 heats up and heats the hydrogen pipeline 12 and the methanol pipeline 13, the fuel in the hydrogen pipeline 12 and the methanol pipeline 13 heats up. When the liquid in the annular groove 311 vaporizes and expands, the actuating sleeve 32 extends to prevent the temperature of the hydrogen pipeline 12 and the methanol pipeline 13 from getting too high, so that the temperature of the fuel in the hydrogen pipeline 12 and the methanol pipeline 13 is in a near constant temperature state.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydrogen-doped methanol hot blast burner, comprising a burner body (1), a cylinder (11) and a hydrogen pipe (12) and a methanol pipe (13) located in the cylinder (11) are arranged on the burner body (1), and one end of the cylinder (11) is provided with a boss (14), characterized in that, The cylinder (11) is internally provided with a heat-conducting spiral pipe (2), the hydrogen pipeline (12) and the methanol pipeline (13) are both passed through the cavity surrounded by the heat-conducting spiral pipe (2), and the bottom of the cylinder (11) is provided with a heat expansion sleeve (3) which is sleeved in the heat-conducting spiral pipe (2) and separates the heat-conducting spiral pipe (2) from the hydrogen pipeline (12) and the methanol pipeline (13) after being elongated.

2. A hot blast burner according to claim 1, characterized in that: The heat expansion sleeve (3) comprises a positioning sleeve (31) and a moving sleeve (32), the top of the positioning sleeve (31) is provided with an annular groove (311), one end of the moving sleeve (32) is fixedly connected with a ring plug (321) which is sleeved in the annular groove (311), the ring plug (321) and the annular groove (311) are slidingly sealed, and the annular groove (311) is provided with a heat expansion liquid.

3. A hot blast burner according to claim 2, characterized in that: The outer circumferential wall of the positioning sleeve (31) is fixedly connected with heat-conducting fins (312) which are uniformly distributed in the circumferential direction.

4. A hot blast burner according to claim 2, wherein: The outer circumferential wall of the positioning sleeve (31) is fixedly connected with a liquid pipe (313) which extends to the outside of the cylinder (11), the liquid pipe (313) is serially connected with a valve (3131) which is located outside the cylinder (11), and one end of the liquid pipe (313) is in communication with the annular groove (311).

5. A hydrogen-doped methanol hot-air burner according to claim 2, characterized in that: The outer circumferential wall and the inner circumferential wall of the ring plug (321) are respectively sleeved with an outer sealing rubber ring (33) and an inner sealing rubber ring (34).

6. A hot blast burner according to claim 2, wherein: The outer circumferential wall of the moving sleeve (32) is provided with heat-conducting holes (323) which are uniformly distributed and are penetrated.

7. A hydrogen-doped methanol hot-air burner according to claim 1, characterized in that: The outside of the cylinder (11) is fixedly sleeved with a heat-conducting disc (4) which is close to the boss (14), and the bottom of the heat-conducting disc (4) is fixedly connected with one end of the heat-conducting spiral pipe (2).

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