Fuel partitioning device of low-nitrogen combustor

Abstract

The utility model discloses a low-nitrogen combustor fuel partitioning device which comprises a low-nitrogen combustor, a combustion pipe is arranged on one side of the low-nitrogen combustor, a mixing chamber is arranged on the combustion pipe, an air inlet pipe is arranged on one side of the mixing chamber, a fuel inlet pipe is arranged on the other side of the mixing chamber, and a partitioning air inlet combustion assembly is arranged in the mixing chamber. And a flow adjusting device is arranged on the partitioned air inlet combustion assembly. The utility model belongs to the technical field of low-nitrogen combustors, and particularly relates to a fuel zoning device of a low-nitrogen combustor, which solves the problem that mixed fuel is easy to burn in a combustion chamber due to the lack of measures of zoning, air inlet and combustion adjustment of the mixed fuel when the conventional low-nitrogen combustor is used for combusting.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-nitrogen burners, and specifically refers to a fuel partitioning device for a low-nitrogen burner. Background Art

[0002] The burner is an important equipment on industrial oil boilers and gas boilers. It ensures the stable ignition and complete combustion of the fuel. The nitrogen oxide pollutants generated by coal burning in boilers are increasing day by day. To inhibit the generation of nitrogen oxides, we must start with the burner.

[0003] There are some shortcomings in the existing technology when mixing fuel for low-nitrogen burners: the fuel and air are mixed in the mixing zone and then directly enter the combustion chamber, which is prone to incomplete combustion and causes the inner wall of the combustion chamber to burn. There is a lack of measures to divert the mixed fuel and control combustion. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing low-nitrogen burner lacks measures for regulating the mixed fuel intake combustion by partitions during combustion, which causes the mixed fuel to be easily scorched in the combustion chamber.

[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a low-nitrogen burner fuel partitioning device, including a low-nitrogen burner, a combustion tube is provided on one side of the low-nitrogen burner, a mixing chamber is provided on the combustion tube, an air inlet pipe is provided on one side of the mixing chamber, a fuel inlet pipe is provided on the other side of the mixing chamber, a partitioned air intake and combustion assembly is provided in the mixing chamber, and a flow regulating device is provided on the partitioned air intake and combustion assembly; the partitioned air intake and combustion assembly includes a valve cylinder 1, a partition is provided on the valve cylinder 1, the partition is tightly attached to the inner wall of the mixing chamber, a combustion disk 1 is provided at the outer end of the valve cylinder 1, a valve cylinder 2 is provided inside the valve cylinder 1, a combustion disk 2 is provided at the outer end of the valve cylinder 2, nozzles are evenly provided on the combustion disk 1 and the combustion disk 2, and the mixed fuel is introduced separately by the valve cylinder 2 and the valve cylinder 1, so that the fuel can be burned in zones and the combustion is more complete.

[0006] Furthermore, the flow regulating device includes a ring, which is sleeved on the second valve cylinder, and a fixed plate one is fixedly connected to the ring, and the fixed plate one is fixedly connected to the inner wall of the second valve cylinder. A gear ring is rotatably provided on the first valve cylinder, and a fixed plate two is provided on the inner side of the gear ring. A motor is provided on the first valve cylinder, and a gear is provided at the output end of the motor. The gear is meshingly connected with the gear ring. When the gear ring rotates, the gap between the second fixed plate and the first fixed plate changes, thereby adjusting the fuel intake flow in the first valve cylinder.

[0007] Preferably, the mixing chamber is provided with an observation window.

[0008] Preferably, the fixing plate 1 and the fixing plate 2 are not in the same plane and are arranged in a staggered manner.

[0009] Preferably, a sealing ring is provided around the circumference of the partition.

[0010] The utility model adopts the above structure to achieve the following beneficial effects:

[0011] 1. The utility model provides a zoned air intake combustion assembly, so that the mixed fuel in the mixing chamber can enter the combustion from the first and second valve cylinders respectively. The speeds at which the fuel enters the first and second valve cylinders are different, so that zoned combustion is achieved and the fuel burns more fully.

[0012] 2. The utility model can realize flow control of the fuel entering the gas distribution cylinder 1 by setting a flow regulating device, thereby ensuring the combustion balance of the combustion disk 1 and the combustion disk 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall stereogram of a fuel partition device for a low-nitrogen burner of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of a mixing chamber of a fuel partitioning device for a low-nitrogen burner according to the utility model;

[0015] Figure 3 for Figure 2 Schematic diagram of the structure from the middle side.

[0016] Among them, 1. low nitrogen burner, 2. combustion tube, 3. mixing chamber, 4. air inlet pipe, 5. fuel inlet pipe, 6. partitioned air intake and combustion assembly, 7. flow regulating device, 8. valve cylinder 1, 9. partition, 10. combustion disc 1, 11. valve cylinder 2, 12. combustion disc 2, 13. nozzle, 14. sleeve ring, 15. fixing plate 1, 16. gear ring, 17. fixing plate 2, 18. motor, 19. gear, 20. observation window, 21. sealing ring. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] like Figure 1-3 The utility model discloses a fuel partitioning device for a low-nitrogen burner, comprising a low-nitrogen burner 1, a combustion tube 2 is arranged on one side of the low-nitrogen burner 1, a mixing chamber 3 is arranged on the combustion tube 2, an air inlet pipe 4 is arranged on one side of the mixing chamber 3, a fuel inlet pipe 5 is arranged on the other side of the mixing chamber 3, a partitioned air intake combustion assembly 6 is arranged in the mixing chamber 3, an observation window 20 is arranged on the mixing chamber 3, and a flow regulating device 7 is arranged on the partitioned air intake combustion assembly 6;

[0020] like Figure 2 The partitioned air intake combustion assembly 6 includes a valve cylinder 8, on which a partition 9 is provided. The partition 9 is tightly attached to the inner wall of the mixing chamber 3, and a sealing ring 21 is provided around the partition 9. A combustion disk 10 is provided at the outer end of the valve cylinder 8, and a valve cylinder 2 11 is provided inside the valve cylinder 8. A combustion disk 2 12 is provided at the outer end of the valve cylinder 2 11. Nozzles 13 are evenly provided on the combustion disk 10 and the combustion disk 2 12. By separately introducing the mixed fuel through the valve cylinder 2 11 and the valve cylinder 8, the fuel can be burned in different areas, and the combustion is more complete.

[0021] like Figure 3 The flow regulating device 7 includes a sleeve 14, which is sleeved on the valve cylinder 11, and a fixing plate 15 is fixedly connected to the sleeve 14. The fixing plate 15 is fixedly connected to the inner wall of the valve cylinder 11, and the fixing plate 15 and the fixing plate 17 are not in the same plane and are arranged in a staggered manner. A gear ring 16 is rotatably provided on the valve cylinder 18, and a fixing plate 2 17 is provided on the inner side of the gear ring 16. A motor 18 is provided on the valve cylinder 18, and a gear 19 is provided at the output end of the motor 18. The gear 19 is meshed with the gear ring 16. Through the rotation of the gear ring 16, the gap between the fixing plate 2 17 and the fixing plate 15 changes, thereby adjusting the fuel intake flow in the valve cylinder 8.

[0022] During specific use, air enters the air inlet pipe 4, and fuel gas enters the fuel inlet pipe 5. The fuel is mixed in the mixing chamber 3 through the low-nitrogen burner 1. Part of the mixed fuel passes through the valve cylinder 1 8 and enters the combustion disk 10 for combustion, and the other part passes through the valve cylinder 2 11 and enters the combustion disk 2 12 for combustion, so that the mixed fuel is burned in separate zones and the combustion is more complete.

[0023] When it is necessary to adjust the air intake flow of the valve cylinder 8, by starting the motor 18, the gear 19 engages the ring gear 16 to rotate, and the ring gear 16 drives the fixed plate 2 17 to rotate. The fixed plate 2 17 can block the gap between the fixed plates 15 and rotate to adjust the size, so as to adjust the air intake flow of the valve cylinder 8 to ensure the balanced combustion of the combustion disk 10 and the combustion disk 2 12.

[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. A low-nitrogen burner fuel partitioning device, comprising a low-nitrogen burner, one side of which is provided with a combustion tube, characterized in that: A mixing chamber is provided on the combustion tube, an air inlet pipe is provided on one side of the mixing chamber, a fuel inlet pipe is provided on the other side of the mixing chamber, a partitioned air intake and combustion assembly is provided in the mixing chamber, and a flow regulating device is provided on the partitioned air intake and combustion assembly.

2. A low nitrogen burner fuel partitioning device according to claim 1, characterized in that: The partitioned air intake and combustion assembly includes a gas distribution cylinder 1, on which a partition is provided, and the partition is tightly attached to the inner wall of the mixing chamber. A combustion disk 1 is provided at the outer end of the gas distribution cylinder 1, and a gas distribution cylinder 2 is provided inside the gas distribution cylinder 1, and a combustion disk 2 is provided at the outer end of the gas distribution cylinder 2, and nozzles are evenly provided on the combustion disk 1 and the combustion disk 2.

3. A fuel partitioning device for a low-nitrogen burner according to claim 2, characterized in that: The flow regulating device includes a ring, which is sleeved on the second valve cylinder, and a fixing plate is fixedly connected to the ring, and the fixing plate is fixedly connected to the inner wall of the second valve cylinder. A gear ring is rotatably provided on the first valve cylinder, and a fixing plate 2 is provided on the inner side of the gear ring. A motor is provided on the first valve cylinder, and a gear is provided at the output end of the motor, and the gear is meshingly connected with the gear ring.

4. A fuel partitioning device for a low-nitrogen burner according to claim 3, characterized in that: The mixing chamber is provided with an observation window.

5. A fuel partitioning device for a low-nitrogen burner according to claim 4, characterized in that: The fixing plate 1 and the fixing plate 2 are not in the same plane and are arranged in a staggered manner.

6. A fuel partitioning device for a low-nitrogen burner according to claim 5, characterized in that: A sealing ring is arranged around the partition.

Images