Low-nitrogen oxide gas burner for industrial furnace

Abstract

The application discloses an industrial furnace low-nitrogen oxide gas burner, which comprises a flow pipe, a jet structure, a gas pipe and a switch block. The switch block is embedded on the left side of the flow pipe, the gas pipe penetrates into the lower end of the flow pipe, the left end of the jet structure is installed on the right side of the flow pipe, the gas forms a ring structure under the action of the force and forms two same central axial rings with the jet of the shunt structure, the uniformity of the jet of the burner is enhanced, the outside of the guide structure guides the gas flowing in the inside of the fixed pipe, the gas forms a uniform flow state, the gas flows in the stress structure and is guided from the inside of the supporting plate, the gas flow extrudes the elastic structure, the gas is guided according to the force, and then the gas is recombined under the guidance of the fixed plate, the stability of the gas flow is enhanced, and then the gas is jetted after being combined on the upper end of the fixed plate, so that the uneven phenomenon caused by the loose gas jet is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pollution prevention and control of industrial furnaces, and in particular to a low-nitrogen oxide gas burner for industrial furnaces. Background Art

[0002] The nitrogen oxide gas burner for industrial furnaces is a kind of injection nozzle used for flame injection. During the natural gas injection process, the gas burner needs to guide the flow of gas to make it a circular injection state and enhance the stability and uniformity of the injection process.

[0003] However, during the injection process, uneven circulation will occur, and diversion will occur during the gas circulation process, which will cause the gases to be divided, resulting in interaction between the fuel gases, affecting the direction of gas re-merger after combustion, and reducing the uniformity of the flame of the gas combustion. Summary of the Invention

[0004] The present invention is achieved through the following technical solution: a low-nitrogen oxide gas burner for an industrial furnace, whose structure includes a circulation pipe, an injection structure, a gas pipe, and a switch block. The switch block is embedded in the left side of the circulation pipe, and the gas pipe passes through the lower end of the circulation pipe. The left end of the injection structure is installed on the right side of the circulation pipe. The injection structure is provided with a hollow tube, a diversion structure, a guide plate, and a fixed tube. The hollow tube is embedded in the inner side of the fixed tube, the diversion structure is installed on the right side of the hollow tube, the guide plate is welded to the inner side of the fixed tube, and the left end of the fixed tube is installed on the right side of the circulation tube. The left side of the guide plate is an open shape, which has a guiding effect.

[0005] As a further improvement of the present invention, the diversion structure is provided with a connecting ring, a guide structure, a force-bearing structure, and a blocking plate. The guide structure is installed on the outside of the connecting ring, the force-bearing structure is embedded in the inside of the connecting ring, the blocking plate is engaged in the middle of the connecting ring, and the connecting ring is installed on the right side of the hollow tube. There are twenty-five connecting rings, which are distributed in a ring shape inside the force-bearing structure.

[0006] As a further improvement of the present invention, the guide structure is provided with a guide groove, a curved structure, and a fixed ring. The guide groove is located outside the fixed ring, the curved structure is embedded in the outside of the fixed ring, and the fixed ring is installed on the outside of the connecting ring. The guide groove is an arc-shaped structure, which is distributed in a ring shape outside the fixed ring and is spaced apart from the curved structure.

[0007] As a further improvement of the present invention, the bending structure is provided with a bending plate, a force-bearing plate, and a connecting block. The bending plate is installed on the inner side of the connecting block. The bending plate is located on the left side of the force-bearing plate. The upper and lower sides of the force-bearing plate are welded to the inner side of the connecting block. The connecting block is embedded in the outer side of the fixing ring. The bending plate is made of aluminum alloy and is relatively thin, with strong toughness and easy bending.

[0008] As a further improvement of the present invention, the force-bearing structure is provided with an extrusion structure, a fixed plate, and a support plate. The extrusion structure is embedded in the inner side of the fixed plate, the support plate is installed on the inner side of the fixed plate, the fixed plate is embedded in the inside of the connecting ring, and the support plate is a structure that is wide in the middle and narrow at both ends.

[0009] As a further improvement of the present invention, the extrusion structure is provided with an elastic structure, a guide block, and a connecting rod. The elastic structure is embedded in the lower end of the guide block, the connecting rod is installed on the left and right sides of the guide block, the connecting rod is embedded in the inner side of the fixed plate, and the guide block is a sphere with a smooth outer surface.

[0010] As a further improvement of the present invention, the elastic structure is provided with a sealing plate, a spring rod, and an extrusion plate. The sealing plate is attached to the upper ends of the left and right sides of the extrusion plate, the spring rod is welded to the side surface of the upper end of the extrusion plate, and the spring rod is embedded in the lower end of the guide block. The sealing plate and the extrusion plate are both made of aluminum alloy and have the characteristic of easy compression deformation, and the thickness of the extrusion plate is thicker than that of the sealing plate.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The gas is sprayed in an annular structure under the action of the impulse, and forms two annular shapes on the same central axis with the injection of the diversion structure, thereby enhancing the uniformity of the burner injection. The outer side of the guide structure guides the gas flowing inside the fixed tube. At the same time, the pressure of the gas flow squeezes the curved structure, so that the gas squeezes the curved plate while being guided on the guide groove, causing the curved plate to be squeezed toward the force-bearing plate. Under the extrusion and guidance of the curved plate, the gas is uniformly sprayed in an annular shape according to the impulse, thereby avoiding the diversion of the gas and making the gas flow uniform.

[0014] 2. When the gas flows in the force-bearing structure, it is guided from the inside of the support plate and diverted through the extrusion structure under the gas impulse. The gas flow squeezes the elastic structure, so that the middle of the extrusion plate is squeezed against the spring rod after being subjected to the gas impulse, causing the left and right sides of the extrusion plate to be squeezed inward, forming a larger inclination, and then driving the sealing plate to move. According to the size of the gas impulse, the gas is guided to flow on the left and right sides of the guide block, and then re-merge under the guidance of the fixed plate, thereby enhancing the stability of the gas flow. The gas is then ejected after merging at the upper end of the fixed plate, avoiding the uneven phenomenon caused by loose gas injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a low-nitrogen oxide gas burner for an industrial furnace according to the present invention.

[0016] Figure 2 It is a side structure schematic diagram of a spraying structure of the present application.

[0017] Figure 3 It is a side structure schematic diagram of a shunt structure of the present application.

[0018] Figure 4 It is a three-dimensional structure schematic diagram of a guide structure of the present application.

[0019] Figure 5 It is a side structure schematic diagram of a bending structure of the present application.

[0020] Figure 6 It is a side structure schematic diagram of a stress structure of the present application.

[0021] Figure 7 It is a side structure schematic diagram of an extrusion structure of the present application.

[0022] Figure 8 It is a side structure schematic diagram of an elastic structure of the present application.

[0023] In the figure: circulation pipe-1, spraying structure-2, gas pipe-3, switch block-4, hollow pipe-21, shunt structure-22, guide plate-23, fixed pipe-24, connecting ring-221, guide structure-222, stress structure-223, blocking plate-224, guide groove-a1, bending structure-a2, fixed ring-a3, bending plate-a21, stress plate-a22, connecting block-a23, extrusion structure-w1, fixed plate-w2, support plate-w3, elastic structure-w11, guide block-w12, connecting rod-w13, sealing plate-e1, spring rod-e2, extrusion plate-e3. DETAILED DESCRIPTION

[0024] The present application is further described below in conjunction with the accompanying drawings:

[0025] Example 1:

[0026] As Figure 1-Figure 5 shown:

[0027] The present invention provides a low-nitrogen oxide gas burner for an industrial furnace, which comprises a flow pipe 1, an injection structure 2, a gas pipe 3, and a switch block 4. The switch block 4 is embedded in the left side of the flow pipe 1, the gas pipe 3 passes through the lower end of the flow pipe 1, and the left end of the injection structure 2 is installed on the right side of the flow pipe 1. The injection structure 2 is provided with a hollow tube 21, a diverter structure 22, a guide plate 23, and a fixed tube 24. The hollow tube 21 is embedded in the inner side of the fixed tube 24, the diverter structure 22 is installed on the right side of the hollow tube 21, the guide plate 23 is welded to the inner side of the fixed tube 24, and the left end of the fixed tube 24 is installed on the right side of the flow pipe 1. The left side of the guide plate 23 is open and has a guiding effect, so that the gas flows from the inside and outside of the hollow tube 21. Under the guidance of the guide plate 23 inside the fixed tube 24, the gas is sprayed in an annular structure under the action of impulse, and forms two rings on the same central axis with the injection of the diverter structure 22, thereby enhancing the uniformity of the burner spray.

[0028] Among them, the diversion structure 22 is provided with a connecting ring 221, a guide structure 222, a force-bearing structure 223, and a blocking plate 224. The guide structure 222 is installed on the outside of the connecting ring 221, the force-bearing structure 223 is embedded in the inside of the connecting ring 221, and the blocking plate 224 is engaged in the middle of the connecting ring 221. The connecting ring 221 is installed on the right side of the hollow tube 21. The connecting ring 221 is provided with twenty-five, which are distributed in a ring shape inside the force-bearing structure 223. The gas rushes out from the inside of the force-bearing structure 223, and at the same time, part of the gas rushes out from the small holes in the blocking plate 224, forming a relatively uniform structure, and the outside of the guide structure 222 guides the gas flowing inside the fixed tube 24 to avoid mutual conflict when the gas rushes out.

[0029] Among them, the guide structure 222 is provided with a guide groove a1, a curved structure a2, and a fixed ring a3. The guide groove a1 is located outside the fixed ring a3, the curved structure a2 is embedded in the outside of the fixed ring a3, and the fixed ring a3 is installed on the outside of the connecting ring 221. The guide groove a1 is an arc-shaped structure, which is distributed in an annular shape outside the fixed ring a3 and is spaced apart from the curved structure a2. The gas is guided by the guide groove a1 to avoid bifurcation of the gas flow. At the same time, the pressure of the gas flow squeezes the curved structure a2. Under its uniform squeezing force, the gas forms a uniform circulation state.

[0030] Among them, the curved structure a2 is provided with a curved plate a21, a force-bearing plate a22, and a connecting block a23. The curved plate a21 is installed on the inner side of the connecting block a23, and the curved plate a21 is located on the left side of the force-bearing plate a22. The upper and lower sides of the force-bearing plate a22 are welded to the inner side of the connecting block a23, and the connecting block a23 is embedded in the outer side of the fixing ring a3. The curved plate a21 is made of aluminum alloy and is relatively thin. It has the characteristics of strong toughness and easy bending. Therefore, the gas is squeezed on the curved plate a21 while being guided on the guide groove a1, so that the curved plate a21 is squeezed toward the force-bearing plate a22. Under the extrusion and guidance of the curved plate a21, the gas is uniformly sprayed in an annular shape according to the impulse, thereby avoiding the diversion of the gas.

[0031] The specific usage and effects of this embodiment are as follows:

[0032] In the present invention, the gas flows from the inside and outside of the hollow tube 21, and under the guidance of the guide plate 23 inside the fixed tube 24, the gas is sprayed in an annular structure under the action of the impulse, and forms two rings on the same central axis with the injection of the diversion structure 22, thereby enhancing the uniformity of the burner injection, and when the gas rushes out from the inside of the force-bearing structure 223, part of the gas rushes out on the small holes in the blocking plate 224, forming a relatively uniform structure, and the outside of the guide structure 222 guides the gas flowing inside the fixed tube 24, and guides the gas through the guide groove a1 in the guide structure 222 to avoid bifurcation of the gas flow, and at the same time, the pressure of the gas flow squeezes the curved structure a2, so that the gas squeezes the curved plate a21 while being guided on the guide groove a1, so that the curved plate a21 is squeezed toward the force-bearing plate a22, and under the extrusion and guidance of the curved plate a21, the gas is uniformly sprayed in an annular shape according to the impulse, thereby avoiding the gas diversion phenomenon and making the gas flow uniform.

[0033] Example 2:

[0034] like Figure 6-Figure 8 Shown:

[0035] Among them, the force-bearing structure 223 is provided with an extrusion structure w1, a fixed plate w2, and a support plate w3. The extrusion structure w1 is embedded in the inner side of the fixed plate w2, the support plate w3 is installed on the inner side of the fixed plate w2, and the fixed plate w2 is embedded in the inside of the connecting ring 221. The support plate w3 is a structure that is wide in the middle and narrow at both ends, so that the gas flows and is guided from the inside of the support plate w3, and is diverted through the extrusion structure w1 under the impact of the gas, so that the gas is ejected after merging at the upper end of the fixed plate w2, avoiding loose gas injection.

[0036] Among them, the extrusion structure w1 is provided with an elastic structure w11, a guide block w12, and a connecting rod w13. The elastic structure w11 is embedded in the lower end of the guide block w12, and the connecting rod w13 is installed on the left and right sides of the guide block w12. The connecting rod w13 is embedded in the inner side of the fixed plate w2. The guide block w12 is a sphere with a smooth outer surface. The gas squeezes the elastic structure w11 and guides it according to the size of the gas impulse, so that the gas flows on the left and right sides of the guide block w12, preventing the problem of gas collision caused by excessive resistance of the guide block w12.

[0037] Among them, the elastic structure w11 is provided with a sealing plate e1, a spring rod e2, and an extrusion plate e3. The sealing plate e1 is attached to the upper ends of the left and right sides of the extrusion plate e3, the spring rod e2 is welded to the side of the upper end of the extrusion plate e3, and the spring rod e2 is embedded in the lower end of the guide block w12. The sealing plate e1 and the extrusion plate e3 are both made of aluminum alloy, which has the characteristic of easy compression deformation, and the thickness of the extrusion plate e3 is thicker than the sealing plate e1. Therefore, after the middle of the extrusion plate e3 is subjected to the impact of gas, it squeezes the spring rod e2, causing the left and right sides of the extrusion plate e3 to be squeezed inward, forming a larger inclination, and then driving the sealing plate e1 to move, guiding it according to the size of the gas impact, and avoiding interaction during the gas circulation process.

[0038] The specific usage and effects of this embodiment are as follows:

[0039] In the present invention, when the gas flows in the force-bearing structure 223, it is guided to flow from the inner side of the support plate w3, and is diverted through the extrusion structure w1 under the impact of the gas. The gas flow squeezes the elastic structure w11, so that the middle of the extrusion plate e3 is subjected to the impact of the gas and squeezes the spring rod e2, causing the left and right sides of the extrusion plate e3 to be squeezed inward, forming a large inclination, and then driving the sealing plate e1 to move. It is guided according to the size of the gas impact, so that the gas flows on the left and right sides of the guide block w12, and then re-merges under the guidance of the fixed plate w2, thereby enhancing the stability of the gas flow, so that the gas is ejected after merging at the upper end of the fixed plate w2, avoiding the uneven phenomenon caused by the loose gas injection.

[0040] Utilizing the technical solution of the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above technical effects, all fall within the scope of protection of the present invention.

Claims

1. A low-nitrogen oxide gas burner for an industrial furnace, comprising a flow pipe (1), an injection structure (2), a gas pipe (3), and a switch block (4), wherein the switch block (4) is embedded in the left side of the flow pipe (1), the gas pipe (3) passes through the interior of the lower end of the flow pipe (1), and the left end of the injection structure (2) is installed on the right side of the flow pipe (1), characterized in that: The injection structure (2) is provided with a hollow tube (21), a diverter structure (22), a guide plate (23), and a fixed tube (24); the hollow tube (21) is embedded inside the fixed tube (24); the diverter structure (22) is installed on the right side of the hollow tube (21); the guide plate (23) is welded to the inside of the fixed tube (24); and the left end of the fixed tube (24) is installed on the right side of the flow tube (1); The diversion structure (22) is provided with a connecting ring (221), a guide structure (222), a force-bearing structure (223), and a blocking plate (224); the guide structure (222) is installed on the outside of the connecting ring (221); the force-bearing structure (223) is embedded in the inside of the connecting ring (221); the blocking plate (224) is engaged in the middle of the connecting ring (221); and the connecting ring (221) is installed on the right side of the hollow tube (21); The guide structure (222) is provided with a guide groove (a1), a curved structure (a2), and a fixed ring (a3); the guide groove (a1) is located outside the fixed ring (a3); the curved structure (a2) is embedded outside the fixed ring (a3); and the fixed ring (a3) ​​is installed outside the connecting ring (221); The bending structure (a2) is provided with a bending plate (a21), a force-bearing plate (a22), and a connecting block (a23); the bending plate (a21) is installed on the inner side of the connecting block (a23); the bending plate (a21) is located on the left side of the force-bearing plate (a22); the upper and lower sides of the force-bearing plate (a22) are welded to the inner side of the connecting block (a23); and the connecting block (a23) is embedded on the outer side of the fixing ring (a3).

2. The low nitrogen oxide gas burner for industrial furnaces according to claim 1, characterized in that: The force-bearing structure (223) is provided with an extrusion structure (w1), a fixing plate (w2), and a support plate (w3); the extrusion structure (w1) is embedded inside the fixing plate (w2); the support plate (w3) is installed inside the fixing plate (w2); and the fixing plate (w2) is embedded inside the connecting ring (221).

3. The low nitrogen oxide gas burner for industrial furnaces according to claim 2, characterized in that: The extrusion structure (w1) is provided with an elastic structure (w11), a guide block (w12), and a connecting rod (w13); the elastic structure (w11) is embedded in the lower end of the guide block (w12); the connecting rod (w13) is installed on the left and right sides of the guide block (w12); and the connecting rod (w13) is embedded in the inner side of the fixing plate (w2).

4. The low nitrogen oxide gas burner for industrial furnaces according to claim 3, characterized in that: The elastic structure (w11) is provided with a sealing plate (e1), a spring rod (e2), and an extrusion plate (e3); the sealing plate (e1) is attached to the upper ends of the left and right sides of the extrusion plate (e3); the spring rod (e2) is welded to the side surface of the upper end of the extrusion plate (e3); and the spring rod (e2) is embedded in the lower end of the guide block (w12).

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