Explosion-proof device for low-nitrogen combustor

Abstract

The utility model discloses an explosion-proof device for a low-nitrogen combustor, which comprises an explosion-proof box, a mounting seat is arranged at the bottom end in the explosion-proof box, the low-nitrogen combustor is arranged on the mounting seat, a gas inlet pipe is arranged at the upper end of the low-nitrogen combustor, a combustion pipe is arranged on the side surface of the low-nitrogen combustor, and a gas outlet pipe is arranged at the lower end of the combustion pipe. An air blower is arranged on the side wall of the low-nitrogen combustor, and an adjustable heat dissipation and exhaust device is arranged on the front side of the low-nitrogen combustor. The utility model belongs to the technical field of protection of low-nitrogen combustors, and particularly relates to an explosion-proof device for a low-nitrogen combustor, which solves the problems that the low-nitrogen combustor in the prior art lacks explosion-proof protection for the low-nitrogen combustor and lacks heat dissipation for the low-nitrogen combustor when the low-nitrogen combustor works.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-nitrogen burner protection, and specifically refers to an explosion-proof device for a low-nitrogen burner. Background Art

[0002] Generally, ultra-low nitrogen burners do not have explosion-proof structures on the outside. Therefore, when flammable and explosive gases come into contact with the ultra-low nitrogen burner, they are likely to react with the gas in the ultra-low nitrogen burner, which may cause an explosion.

[0003] After searching, the public (announcement) number: CN217604150U discloses an explosion-proof device for an ultra-low nitrogen burner. By setting an explosion-proof box, the low nitrogen burner can be explosion-proof when working. At the same time, a noise reduction mechanism is set to absorb the noise of the low nitrogen burner when working.

[0004] However, the applicant has discovered that when the low-nitrogen burner is working, it lacks the heat dissipation function. How to achieve both heat dissipation and explosion prevention is a problem that needs to be solved. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the low-nitrogen burner in the prior art lacks explosion-proof protection for the low-nitrogen burner when working, and also lacks heat dissipation for the low-nitrogen burner.

[0006] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: an explosion-proof device for a low-nitrogen burner, comprising an explosion-proof box, a mounting seat is provided at the inner bottom end of the explosion-proof box, a low-nitrogen burner is provided on the mounting seat, an air inlet pipe is provided at the upper end of the low-nitrogen burner, a combustion tube is provided on the side of the low-nitrogen burner, a blower is provided on the side wall of the low-nitrogen burner, and an adjustable heat dissipation and exhaust device is provided on the front side of the low-nitrogen burner; the heat dissipation and exhaust device comprises a shell, the shell is provided on the side wall of the explosion-proof box, an exhaust port is provided at the upper end of the shell, a screw rod is provided in the inner thread connection of the shell, and a hand wheel is provided at the outer end of the screw rod A connecting shaft is inserted in the screw rod, and a piston plate is provided at the other end of the connecting shaft. The piston plate slides in the shell, and an end plate is provided at the other end of the screw rod. A spring is sleeved on the connecting shaft, and one end of the spring is fixed to the end plate and the other end is fixed to the piston plate. When gas is blown into the explosion-proof box of the blower box, the gas will be pressurized in the explosion-proof box to push the piston plate to slide in the shell. When it slides to the exhaust port, the gas in the explosion-proof box can be depressurized and discharged, and the heat can be taken out at the same time. When the blower is not working, the piston plate is away from the exhaust port under the action of the spring, and the external gas cannot enter the explosion-proof box, which can have an explosion-proof effect on the low-nitrogen burner.

[0007] Preferably, the combustion tube and the air inlet tube are both provided with sealing sleeves to prevent external gas from entering the explosion-proof box through the gap.

[0008] Preferably, the coupling is connected in a snap-fit ​​sliding manner in the screw rod, that is, the coupling can telescope and slide in the screw rod but can never be separated from the screw rod.

[0009] Preferably, the housing is arranged in a rectangular cylinder shape, and the piston plate is arranged in a rectangular plate shape and is sealed and slidable in the housing.

[0010] Preferably, the adjustable heat dissipation and exhaust devices are provided in multiple groups on the side wall of the explosion-proof box.

[0011] Preferably, the blowers are located on opposite sides of the burner tube.

[0012] The utility model adopts the above structure to achieve the following beneficial effects:

[0013] The utility model can discharge the heat in the explosion-proof box by arranging an adjustable heat dissipation and exhaust device, and can also prevent external gas from entering the explosion-proof box, so as to achieve the purpose of both heat dissipation and explosion-proof for the low-nitrogen burner, improve the working safety of the low-nitrogen burner, and also ensure that the low-nitrogen burner operates in a low-temperature environment, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall stereogram of an explosion-proof device for a low-nitrogen burner according to the utility model;

[0015] Figure 2 It is a three-dimensional diagram of an adjustable heat dissipation and exhaust device of an explosion-proof device for a low-nitrogen burner of the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the internal structure of the middle shell.

[0017] Among them, 1. explosion-proof box, 2. mounting base, 3. low-nitrogen burner, 4. air intake pipe, 5. combustion pipe, 6. blower, 7. adjustable heat dissipation exhaust device, 8. shell, 9. exhaust port, 10. screw rod, 11. hand wheel, 12. connecting shaft, 13. piston plate, 14. end plate, 15. spring, 16. sealing sleeve. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] like Figure 1-3 The utility model discloses an explosion-proof device for a low-nitrogen burner, comprising an explosion-proof box 1, a mounting seat 2 is provided at the bottom end of the explosion-proof box 1, a low-nitrogen burner 3 is provided on the mounting seat 2, an air intake pipe 4 is provided at the upper end of the low-nitrogen burner 3, a combustion tube 5 is provided on the side of the low-nitrogen burner 3, a sealing sleeve 16 is provided on the combustion tube 5 and the air intake tube 4 to prevent external gas from entering the explosion-proof box 1 through the gap, a blower 6 is provided on the side wall of the low-nitrogen burner 3, and the blower 6 is located on the opposite side of the combustion tube 5, and an adjustable heat dissipation exhaust device 7 is provided on the front side of the low-nitrogen burner 3;

[0021] like Figure 1-3 The heat dissipation and exhaust device includes a shell 8, which is arranged in a rectangular cylindrical shape, a piston plate 13 is arranged in a rectangular plate shape and is sealed and slidable in the shell 8, the shell 8 is arranged on the side wall of the explosion-proof box 1, and an exhaust port 9 is arranged at the upper end of the shell 8. A screw rod 10 is threadedly connected in the shell 8, and a hand wheel 11 is arranged at the outer end of the screw rod 10. A connecting shaft 12 is inserted in the screw rod 10, and the connecting shaft 12 is connected in a buckling sliding manner in the screw rod 10, that is, the connecting shaft 12 can be telescopically slidable in the screw rod 10 but can never be separated from the screw rod 10, and a piston plate 13 is arranged at the other end of the connecting shaft 12, and the piston plate 13 slides in the shell 8, and an end plate is arranged at the other end of the screw rod 10 14, a spring 15 is sleeved on the connecting shaft 12, one end of the spring 15 is fixedly connected to the end plate 14 and the other end is fixedly connected to the piston plate 13. A plurality of groups of adjustable heat dissipation exhaust devices 7 are provided on the side wall of the explosion-proof box 1. When the blower 6 blows gas into the explosion-proof box 1, the gas in the explosion-proof box 1 will be pressurized to push the piston plate 13 to slide in the shell 8. When it slides to the exhaust port 9, the gas in the explosion-proof box 1 can be depressurized and discharged, and the heat can be taken out at the same time. When the blower 6 is not working, the piston plate 13 is away from the exhaust port 9 under the action of the spring 15, and the external gas cannot enter the explosion-proof box 1, which can have an explosion-proof effect on the low-nitrogen burner 3.

[0022] During specific use, air enters the air intake pipe 4, passes through the low-nitrogen burner 3, burns and exhausts smoke in the combustion tube 5, and gas is blown into the explosion-proof box 1 through the blower 6. The gas will be pressurized in the closed explosion-proof box 1 and squeeze the piston plate 13. The piston plate 13 pushes the connecting shaft 12 to slide in the screw rod 10, and the spring 15 is compressed. Until the piston plate 13 slides to the exhaust port 9, the heat and gas in the explosion-proof box 1 will be discharged from the exhaust port 9 to achieve the purpose of heat dissipation. During the heat dissipation process, external gas will not enter the explosion-proof box 1 from the exhaust port 9, the blower 6 stops working, and the spring 15 will push the piston plate 13 to return to its original state. At this time, the piston plate 13 is located in the shell 8 close to the explosion-proof box 1 to achieve sealing, thereby achieving the purpose of explosion-proofing the low-nitrogen burner 3.

[0023] When it is necessary to adjust the pressure at the exhaust port 9 where the piston plate 13 slides, the screw 10 will be screwed into the housing 8 by turning the hand wheel 11, and the end plate 14 will push the spring 15 to move, so that the piston plate 13 will also slide in the housing 8, so that the distance from the piston plate 13 to the exhaust port 9 changes, thereby achieving the purpose of adjusting the heat dissipation pressure in the explosion-proof box 1.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An explosion-proof device for a low-nitrogen burner, comprising an explosion-proof box, characterized in that: A mounting seat is provided at the inner bottom end of the explosion-proof box, a low-nitrogen burner is provided on the mounting seat, an air intake pipe is provided at the upper end of the low-nitrogen burner, a combustion tube is provided on the side of the low-nitrogen burner, a blower is provided on the side wall of the low-nitrogen burner, and an adjustable heat dissipation exhaust device is provided on the front side of the low-nitrogen burner.

2. The explosion-proof device for a low-nitrogen burner according to claim 1, characterized in that: The heat dissipation and exhaust device includes a shell, which is arranged on the side wall of the explosion-proof box, an exhaust port is arranged at the upper end of the shell, a screw rod is threadedly connected to the shell, a hand wheel is arranged at the outer end of the screw rod, a connecting shaft is inserted into the screw rod, a piston plate is arranged at the other end of the connecting shaft, the piston plate slides in the shell, an end plate is arranged at the other end of the screw rod, a spring is sleeved on the connecting shaft, one end of the spring is fixed to the end plate and the other end is fixed to the piston plate.

3. The explosion-proof device for a low-nitrogen burner according to claim 2, characterized in that: The combustion tube and the air inlet tube are both provided with sealing sleeves.

4. The explosion-proof device for a low-nitrogen burner according to claim 3, characterized in that: The coupling is connected in a snap-fit ​​sliding manner in the screw rod.

5. The explosion-proof device for a low-nitrogen burner according to claim 4, characterized in that: The housing is arranged in a rectangular cylinder shape, and the piston plate is arranged in a rectangular plate shape and is sealed and slidable in the housing.

6. The explosion-proof device for a low-nitrogen burner according to claim 5, characterized in that: The adjustable heat dissipation and exhaust device is provided in multiple groups on the side wall of the explosion-proof box.

7. The explosion-proof device for a low-nitrogen burner according to claim 6, characterized in that: The blowers are located on opposite sides of the burner tube.

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