Hydrogen burner with anti-backfire nozzle structure

Abstract

The utility model relates to the technical field of combustors, one embodiment of the utility model provides a hydrogen combustor with an anti-backfire nozzle structure, which comprises a combustor body, a nozzle penetrates through one end of the combustor body, an anti-backfire adjusting assembly is arranged on the side face of the combustor body, and the anti-backfire nozzle structure is arranged on the side face of the combustor body. The anti-backfire adjusting assembly comprises an anti-backfire valve, one end of the anti-backfire valve is arranged on the outer wall of the nozzle, a sliding groove is formed in the outer wall of the nozzle, a blocking plate is slidably connected to the inner wall of the sliding groove, a transverse rod is fixedly connected to the side face of the blocking plate, and a short plate is fixedly connected to the side face of the combustor body. By means of the technical scheme, the technical problems that in the prior art, the flame size of a nozzle cannot be adjusted, and flame output of the nozzle is not stable enough are solved.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of burner technology, specifically to a hydrogen burner with a backfire prevention nozzle structure. Background Technology

[0002] The backfire prevention nozzle design is mainly to improve the safety of hydrogen combustion process, prevent the flame from flowing back into the gas supply system, and avoid backfire that could damage the equipment or cause an explosion.

[0003] According to a public disclosure of a hydrogen-oxygen burner with a backfire prevention structure (publication number: CN 217928771 U), it includes a shell, a fan, a nozzle, an ignition transformer, an oil pump, a combustion plate, and a flame-throwing assembly. An air curtain nozzle is provided on the upper part of the outer wall of the nozzle, and a compressed air pump is provided on the upper end face of the shell. A guide pipe connects the air curtain nozzle and the compressed air pump. When the burner is turned off, the compressed air pump is started, and the compressed air pump introduces compressed air into the air curtain nozzle through the guide pipe.

[0004] In the aforementioned application, the cooperation between components such as ignition transformers and oil pumps is insufficient to address the problems of inflexibly adapting to different combustion requirements and reducing the risk of flame leakage or backflow. This results in the inability to adjust the flame size of the nozzle and the insufficient stability of the flame output, which requires improvement. Utility Model Content

[0005] To overcome the above-mentioned defects, embodiments of this utility model provide a hydrogen burner with a backfire prevention nozzle structure, which solves the technical problems of the nozzle flame size not being adjustable and the nozzle flame output not being stable enough in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides a hydrogen burner with a backfire prevention nozzle structure, comprising a burner body, one end of which has a nozzle extending through it, a backfire prevention adjustment assembly disposed on the side of the burner body, the backfire prevention adjustment assembly including a backfire prevention valve, one end of which is disposed on the outer wall of the nozzle, a groove is formed on the outer wall of the nozzle, a baffle plate is slidably connected to the inner wall of the groove, a crossbar is fixedly connected to the side of the baffle plate, a short plate is fixedly connected to the side of the burner body, a spring is fixedly connected to the top of the short plate, the end of the spring away from the short plate is fixedly connected to the bottom of the crossbar, a round rod is fixedly connected to the top of the short plate, the end of the round rod away from the short plate extends through the bottom of the crossbar.

[0007] For example, in a hydrogen burner with a backfire prevention nozzle structure provided in at least one embodiment of the present invention, the nozzle is located on the displacement trajectory of the baffle plate, a handle is fixedly connected to the top of the baffle plate, and a rotating shaft is rotatably connected to the side of the crossbar. The handle is designed to facilitate moving the baffle plate.

[0008] A displacement plate is rotatably connected to the circumference of the rotating shaft, and a limiting short rod is fixedly connected to the side of the displacement plate. The design of the displacement plate helps to temporarily restrict the position of the barrier plate and prevent the barrier plate from moving arbitrarily.

[0009] According to another aspect, at least one embodiment of the present invention also provides a hydrogen burner with a backfire prevention nozzle structure. A rectangular plate is fixedly connected to the side of the burner body, and a slot is provided on the side of the rectangular plate. The slot is located on the displacement trajectory of the limiting rod, and the design of the slot is conducive to locking the limiting rod in the slot.

[0010] A pull plate is fixedly connected to the side of the displacement plate, and several slots are provided and arranged linearly on the side of the rectangular plate. The design of the pull plate is conducive to moving the displacement plate.

[0011] For example, in a hydrogen burner with a backfire prevention nozzle structure provided in at least one embodiment of this utility model, a vibration ash removal assembly is provided on the side of the burner body. The vibration ash removal assembly includes a squeezing rod, one end of which is fixedly connected to the top of a crossbar. A long plate is fixedly connected to the side of the burner body, and a second spring is fixedly connected to the top of the long plate. A vibrating plate is fixedly connected to the end of the second spring away from the long plate. A thin rod is fixedly connected to the top of the long plate, and the end of the thin rod away from the long plate passes through the bottom of the vibrating plate. The squeezing rod squeezes the vibrating plate, causing it to move downward. When the vibrating plate is no longer squeezed and rebounds upward through the second spring, the vibrating plate will strike the nozzle, causing vibration and removing the combustion scale remaining on the inner wall of the nozzle.

[0012] The vibrating plate is located on the displacement trajectory of the extrusion rod, and the nozzle is located on the displacement trajectory of the vibrating plate. This design is beneficial for the vibrating plate to vibrate and strike the nozzle when it rebounds.

[0013] A connecting pipe is provided on the side of the burner body, and a control unit is provided on the side of the burner body. The design of the control unit is conducive to the operation and use of the burner body.

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

[0015] In this invention, through the cooperation of components such as the baffle plate, crossbar, and spring inside the anti-backfire adjustment assembly, the movement of the baffle plate can effectively adjust the nozzle outlet, thereby controlling the size of the flame emitted by the burner. When the baffle plate moves downward, it gradually blocks the nozzle outlet, reducing the flame output. Conversely, when the baffle plate moves upward, it increases the flame output, providing a larger flame and flexibly adapting to different combustion needs. With this structure, the burner can adjust the flame size of the nozzle in case of abnormal conditions, reducing the risk of flame leakage or backflow, temporarily fixing the position of the baffle plate, ensuring stable flame output from the nozzle, and enhancing the safety of the system.

[0016] In this invention, through the cooperation of components such as the vibrating plate, the squeezing rod, and the spring inside the vibration ash removal assembly, when the vibrating plate rebounds and moves upward, it strikes the nozzle, causing vibration and removing residual combustion scale adhering to the inner wall of the nozzle. By striking the nozzle, the vibrating plate can effectively remove combustion scale from the inner wall of the nozzle. This scale usually affects the gas flow and thus reduces the working efficiency of the burner. Through regular vibration, the nozzle can be kept unobstructed, ensuring the burner operates continuously and stably. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model;

[0019] Figure 2 This is a three-dimensional side view of the burner body of this utility model.

[0020] Figure 3 This is a three-dimensional side view of the nozzle structure of this utility model;

[0021] Figure 4 This utility model Figure 3 A three-dimensional magnified structural diagram of A in the middle;

[0022] Figure 5 This is a three-dimensional bottom view of the structure of the long plate of this utility model.

[0023] In the diagram: 1. Burner body; 2. Nozzle; 3. Anti-backfire adjustment assembly; 31. Anti-backfire valve; 32. Slide groove; 33. Baffle plate; 34. Crossbar; 35. Short plate; 36. Spring 1; 37. Round rod; 38. Rotating shaft; 39. Displacement plate; 310. Limiting short rod; 311. Rectangular plate; 312. Slot; 313. Handle; 314. Pull plate; 4. Vibration ash removal assembly; 41. Extrusion rod; 42. Long plate; 43. Spring 2; 44. Thin rod; 45. Vibrating plate; 5. Connecting pipe; 6. Control unit. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-5 As shown, a hydrogen burner with a backfire prevention nozzle structure is illustrated in one embodiment of the present invention. It includes a burner body 1, with a nozzle 2 penetrating one end of the burner body 1. A backfire prevention adjustment assembly 3 is provided on the side of the burner body 1. The backfire prevention adjustment assembly 3 includes a backfire prevention valve 31, one end of which is disposed on the outer wall of the nozzle 2. A groove 32 is formed on the outer wall of the nozzle 2. A baffle plate 33 is slidably connected to the inner wall of the groove 32. A crossbar 34 is fixedly connected to the side of the baffle plate 33. A short plate 35 is fixedly connected to the side of the burner body 1. A spring 36 is fixedly connected to the top of the short plate 35. The end of the spring 36 away from the short plate 35 is fixedly connected to the bottom of the crossbar 34. A round rod 37 is fixedly connected to the top of the short plate 35. The end of the round rod 37 away from the short plate 35 penetrates the bottom of the crossbar 34.

[0031] In some examples, the nozzle 2 is located on the displacement trajectory of the baffle plate 33, the top of the baffle plate 33 is fixedly connected to the handle 313, and the side of the crossbar 34 is rotatably connected to the pivot 38. The handle 313 is designed to facilitate the movement of the baffle plate 33.

[0032] A displacement plate 39 is rotatably connected to the circumferential surface of the rotating shaft 38. A limiting short rod 310 is fixedly connected to the side of the displacement plate 39. The design of the displacement plate 39 helps to temporarily restrict the position of the barrier plate 33 and prevent the barrier plate 33 from moving arbitrarily.

[0033] A rectangular plate 311 is fixedly connected to the side of the burner body 1. A slot 312 is provided on the side of the rectangular plate 311. The slot 312 is located on the displacement trajectory of the limiting short rod 310. The design of the slot 312 is conducive to locking the limiting short rod 310 in the slot 312.

[0034] A pull plate 314 is fixedly connected to the side of the displacement plate 39. Several slots 312 are provided and are arranged linearly on the side of the rectangular plate 311. The design of the pull plate 314 is conducive to moving the displacement plate 39.

[0035] For example, such as Figures 1-5As shown, during normal combustion, hydrogen enters the burner from the gas pipeline through the backfire prevention valve 31, mixes with oxygen or air, ignites, and burns. The combusted gas is usually discharged along the nozzle 2. During this process, the backfire prevention valve 31 remains open, allowing hydrogen to flow and participate in normal combustion. When the flame begins to flow back into the gas pipeline, the backfire prevention valve 31 immediately activates, and the valve inside the check valve automatically closes according to the direction of the gas flow, preventing the flame from flowing back into the gas source along the gas pipeline. It only allows gas to flow in one direction; when the gas flows in the opposite direction, the valve automatically closes. To prevent backfire, the baffle plate 33 is moved downwards, causing it to slide down the inner wall of the groove 32. The round rod 37 limits the crossbar 34, causing the baffle plate 33 to slide downwards along the round rod 37. As the baffle plate 33 slides downwards, it moves into the nozzle 2, gradually blocking the flame outlet of the nozzle 2. The movement of the baffle plate 33 adjusts the size of the flame emitted by the nozzle 2. When the baffle plate 33 moves downwards, it causes the crossbar 34, the rotating shaft 38, the displacement plate 39, and the limiting short rod 310 to move downwards, compressing the spring 36. When it reaches the appropriate position... When the position is set, the downward movement of the baffle plate 33 is paused, and the displacement plate 39 is rotated along the pivot 38, moving towards the side closer to the rectangular plate 311. The movement of the pivot 38 will drive the limiting rod 310 to move, locking the limiting rod 310 into the slot 312, thereby temporarily fixing the position of the displacement plate 39. With the position of the displacement plate 39 fixed, the position of the baffle plate 33 can be temporarily fixed, preventing the baffle plate 33 from continuing to slide downward. The movement of the baffle plate 33 can effectively adjust the outlet of the nozzle 2, thereby controlling the size of the flame emitted by the burner. When the baffle plate 33 moves downward, it gradually blocks the flame. The nozzle 2 reduces the flame output, while the baffle plate 33 moves upward to increase the flame output, providing a larger flame and flexibly adapting to different combustion needs. This precise flame adjustment method is very important for controlling hydrogen combustion. With this structure, the burner can adjust the flame size of nozzle 2 in case of abnormal conditions, reducing the risk of flame leakage or backflow. In addition, during the movement of the displacement plate 39, the short rod 310 will be locked into the slot 312, temporarily fixing the position of the baffle plate 33, ensuring stable flame output of nozzle 2 and enhancing the safety of the system.

[0036] like Figures 1-5As shown, in another embodiment of the present invention, a vibration ash removal component 4 is provided on the side of the burner body 1. The vibration ash removal component 4 includes a pressing rod 41, one end of which is fixedly connected to the top of the crossbar 34. A long plate 42 is fixedly connected to the side of the burner body 1. A second spring 43 is fixedly connected to the top of the long plate 42. A vibrating plate 45 is fixedly connected to the end of the second spring 43 away from the long plate 42. A thin rod 44 is fixedly connected to the top of the long plate 42. The end of the thin rod 44 away from the long plate 42 passes through the bottom of the vibrating plate 45. The vibrating plate 45 is pressed by the pressing rod 41, causing the vibrating plate 45 to move downward. When the vibrating plate 45 is not pressed and rebounds upward by the second spring 43, the vibrating plate 45 will strike the nozzle 2, causing vibration to the nozzle 2 and removing the combustion scale remaining on the inner wall of the nozzle 2.

[0037] In some examples, the vibrating plate 45 is located on the displacement trajectory of the extrusion rod 41, and the nozzle 2 is located on the displacement trajectory of the vibrating plate 45. This design is beneficial for the vibrating plate 45 to vibrate and strike the nozzle 2 when it rebounds.

[0038] A connecting pipe 5 is provided on the side of the burner body 1, and a control unit 6 is provided on the side of the burner body 1. The design of the control unit 6 is conducive to the operation and use of the burner body 1.

[0039] For example, such as Figures 1-5 As shown, when the horizontal bar 34 moves downward, it drives the extrusion rod 41 downward. The vibrating plate 45 is located on the movement trajectory of the extrusion rod 41. When the extrusion rod 41 moves downward, it will extrude the vibrating plate 45, causing the vibrating plate 45 to slide downward along the thin rod 44 and extrude the second spring 43. The vibrating plate 45 moves away from the nozzle 2. When the vibrating plate 45 is no longer subjected to this force, it will no longer extrude the second spring 43, allowing the vibrating plate 45 to automatically reset with the elastic force of the second spring 43, causing the vibrating plate 45 to move upward. The nozzle 2 is located on the movement trajectory of the vibrating plate 45. When the vibrating plate 45 rebounds and moves upward, it will strike the nozzle 2, causing the nozzle 2 to vibrate and remove residual combustion scale adhering to the inner wall of the nozzle 2. By striking the nozzle 2, the vibrating plate 45 can effectively remove the combustion scale on the inner wall of the nozzle 2. These scale substances usually affect the gas flow and thus reduce the working efficiency of the burner. Through regular vibration, the nozzle 2 can be kept unobstructed, ensuring the continuous and stable operation of the burner.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hydrogen burner with a backfire-preventing nozzle structure, characterized in that, Includes a burner body (1), one end of which is penetrated by a nozzle (2), and a backfire prevention adjustment component (3) is provided on the side of the burner body (1). The backfire prevention adjustment assembly (3) includes a backfire prevention valve (31), one end of which is disposed on the outer wall of the nozzle (2). A groove (32) is provided on the outer wall of the nozzle (2). A baffle plate (33) is slidably connected to the inner wall of the groove (32). A crossbar (34) is fixedly connected to the side of the baffle plate (33). A short plate (35) is fixedly connected to the side of the burner body (1).

2. A hydrogen burner with a backfire-preventing nozzle structure according to claim 1, characterized in that, A spring (36) is fixedly connected to the top of the short plate (35). The end of the spring (36) away from the short plate (35) is fixedly connected to the bottom of the crossbar (34). A round rod (37) is fixedly connected to the top of the short plate (35). The end of the round rod (37) away from the short plate (35) passes through the bottom of the crossbar (34).

3. A hydrogen burner with a backfire-preventing nozzle structure according to claim 2, characterized in that, The nozzle (2) is located on the displacement trajectory of the baffle plate (33), and a handle (313) is fixedly connected to the top of the baffle plate (33), and a rotating shaft (38) is rotatably connected to the side of the crossbar (34).

4. A hydrogen burner with a backfire-preventing nozzle structure according to claim 3, characterized in that, A displacement plate (39) is rotatably connected to the circumferential surface of the rotating shaft (38), and a limiting short rod (310) is fixedly connected to the side of the displacement plate (39).

5. A hydrogen burner with a backfire-preventing nozzle structure according to claim 4, characterized in that, A rectangular plate (311) is fixedly connected to the side of the burner body (1). A slot (312) is provided on the side of the rectangular plate (311). The slot (312) is located on the displacement trajectory of the limiting rod (310).

6. A hydrogen burner with a backfire-preventing nozzle structure according to claim 5, characterized in that, The displacement plate (39) is fixedly connected to a pull plate (314) on its side, and several slots (312) are provided and arranged linearly on the side of the rectangular plate (311).

7. A hydrogen burner with a backfire-preventing nozzle structure according to claim 6, characterized in that, The burner body (1) is provided with a vibration ash removal assembly (4) on its side. The vibration ash removal assembly (4) includes a pressing rod (41). One end of the pressing rod (41) is fixedly connected to the top of the crossbar (34). A long plate (42) is fixedly connected to the side of the burner body (1).

8. A hydrogen burner with a backfire-preventing nozzle structure according to claim 7, characterized in that, A second spring (43) is fixedly connected to the top of the long plate (42), and a vibrating plate (45) is fixedly connected to the end of the second spring (43) away from the long plate (42). A thin rod (44) is fixedly connected to the top of the long plate (42), and the end of the thin rod (44) away from the long plate (42) passes through the bottom of the vibrating plate (45).

9. A hydrogen burner with a backfire-preventing nozzle structure according to claim 8, characterized in that, The vibrating plate (45) is located on the displacement trajectory of the extrusion rod (41), and the nozzle (2) is located on the displacement trajectory of the vibrating plate (45).

10. A hydrogen burner with a backfire-preventing nozzle structure according to claim 9, characterized in that, A connecting pipe (5) is provided on the side of the burner body (1), and a control unit (6) is provided on the side of the burner body (1).

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