Nozzle structure for efficient combustor

Abstract

The utility model relates to the technical field of combustors, and discloses a nozzle structure for a high-efficiency combustor, which comprises a nozzle outer cylinder, an air inlet inner cylinder is arranged in the nozzle outer cylinder, the outer side wall of the air inlet inner cylinder is fixedly connected with a fixed wall, the right side surface of the fixed wall is fixedly connected to the opening at the left end of the nozzle outer cylinder, and the right side surface of the fixed wall is fixedly connected to the opening at the right end of the nozzle outer cylinder. A combustion-supporting gas inlet pipe is embedded in the fixing wall, a through hole is formed in the side surface of the gas inlet inner cylinder, and an igniter is fixedly installed on the right side surface of the gas inlet inner cylinder. By arranging the gas inlet inner cylinder with the surface provided with the through holes, the diameter of the through holes is gradually increased from left to right, gas between the nozzle outer cylinder and the gas inlet inner cylinder can be evenly distributed, combustion-supporting gas is input into the nozzle outer cylinder through the combustion-supporting gas inlet pipe, and the gas and the combustion-supporting gas are mixed in the area between the nozzle outer cylinder and the gas inlet inner cylinder; and under the blocking of the arc-shaped wall on the left side of the annular baffle block, the gas can generate certain rotation, so that the gas and the gas can be more fully mixed.

Description

A nozzle structure for a high-efficiency burner Technical Field

[0001] This utility model relates to the field of burner technology, specifically a nozzle structure for a high-efficiency burner. Background Technology

[0002] A burner is a general term for a device that mixes and combusts fuel gas and air in a specific manner. Burners are classified by type and application into industrial burners, combustion engines, civil burners, and special-purpose burners. To ensure efficient, high-quality, and safe combustion, proper mixing of fuel gas and combustion-supporting gas is crucial. Existing burners often fail to mix fuel gas and combustion-supporting gas sufficiently, leading to incomplete combustion, fuel waste, and consequently, insufficient heat output. Summary of the Invention

[0003] The purpose of this invention is to provide a nozzle structure for a high-efficiency burner to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A nozzle structure for a high-efficiency burner includes an outer nozzle cylinder and an inner air inlet cylinder. A fixed wall is fixed to the outer wall of the inner air inlet cylinder. The right side surface of the fixed wall is fixed to the left end opening of the outer nozzle cylinder. A combustion-supporting air inlet pipe is embedded inside the fixed wall, with its outlet located on the right side of the fixed wall. A connecting flange is fixed to the left end of the inner air inlet cylinder. Through holes are formed on the side surface of the inner air inlet cylinder, all located on the right side of the fixed wall. The right end of the inner air inlet cylinder is closed, and an igniter is fixedly installed on its right side surface inside the outer nozzle cylinder.

[0006] As a further improvement of this utility model, the combustion-supporting air intake pipe is arranged equidistantly around the central axis of the air intake inner cylinder.

[0007] As a further improvement of this utility model, the diameter of the through hole gradually increases from left to right.

[0008] As a further embodiment of this utility model: the right end of the nozzle outer cylinder is tapered, and the inner wall of the tapered section of the nozzle outer cylinder is provided with an annular stop block, and the left side wall of the annular stop block is provided with a concave arc surface.

[0009] As a further embodiment of this utility model: a narrow tube is fixedly connected to the right end of the nozzle outer cylinder, the inner wall of the narrow tube is provided with an outwardly convex arc surface, a flared tube is fixedly connected to the right end of the narrow tube, and a mesh plate is fixedly connected to the right end of the flared tube.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] By setting an air inlet cylinder with through holes on its surface, the diameter of the through holes gradually increases from left to right. After the gas is introduced, the gas distribution between the nozzle outer cylinder and the air inlet cylinder can be made more uniform. The combustion-supporting gas is introduced into the interior of the nozzle outer cylinder through the combustion-supporting gas inlet pipe. The gas and the combustion-supporting gas mix in the area between the nozzle outer cylinder and the air inlet cylinder. Under the obstruction of the arc-shaped wall on the left side of the annular baffle, the gas will generate a certain amount of swirling, which can make the two mix more fully. This facilitates more complete combustion after the gas is ignited, reduces gas waste, and the compression of the narrow tube makes the combustion gas generate higher pressure, increases the gas discharge velocity, and ensures sufficient heat supply. Attached Figure Description

[0012] Figure 1 is a schematic diagram of a nozzle structure for a high-efficiency burner.

[0013] In the diagram: 1. Nozzle outer cylinder; 2. Fixed wall; 3. Connecting flange; 4. Inlet cylinder; 5. Combustion-supporting gas inlet pipe; 6. Through hole; 7. Igniter; 8. Annular stop block; 9. Narrow pipe; 10. Flared pipe; 11. Mesh plate. Detailed Implementation

[0014] Please refer to Figure 1. In this embodiment of the present invention, a nozzle structure for a high-efficiency burner includes an outer nozzle cylinder 1, an inner air inlet cylinder 4 is provided inside the outer nozzle cylinder 1, a fixed wall 2 is fixedly connected to the outer side wall of the inner air inlet cylinder 4, the right side surface of the fixed wall 2 is fixedly connected to the left end opening of the outer nozzle cylinder 1, a combustion-supporting air inlet pipe 5 is embedded inside the fixed wall 2, the outlet end of the combustion-supporting air inlet pipe 5 is located on the right side of the fixed wall 2, a connecting flange 3 is fixedly connected to the left end of the inner air inlet cylinder 4, a through hole 6 is opened on the side surface of the inner air inlet cylinder 4, all the through holes 6 are located on the right side of the fixed wall 2, the right end of the inner air inlet cylinder 4 is closed, and an igniter 7 is fixedly installed on its right side surface, the igniter 7 is inside the outer nozzle cylinder 1.

[0015] Preferably, the combustion-supporting air intake pipe 5 is arranged equidistantly around the central axis of the air intake inner cylinder 4.

[0016] Preferably, the diameter of the through hole 6 gradually increases from left to right.

[0017] Preferably, the right end of the nozzle outer cylinder 1 is tapered, and the inner wall of the tapered section of the nozzle outer cylinder 1 is provided with an annular stop 8, and the left side wall of the annular stop 8 is provided with a concave arc surface.

[0018] Preferably, a narrow tube 9 is fixedly connected to the right end of the nozzle outer cylinder 1. The inner wall of the narrow tube 9 is set with an outwardly convex arc surface. A flared tube 10 is fixedly connected to the right end of the narrow tube 9. A mesh plate 11 is fixedly connected to the right end of the flared tube 10.

[0019] The working principle of this utility model is as follows: When using this burner nozzle structure, the connecting flange 3 is used for connection and fixation, and gas is introduced from the inside towards the connecting flange 3 and the inner air inlet cylinder 4. The surface of the inner air inlet cylinder 4 has a through hole 6, through which gas enters between the outer nozzle cylinder 1 and the inner air inlet cylinder 4. The diameter of the through hole 6 gradually increases from left to right. The gas is input from left to right, first entering the outer nozzle cylinder 1 through the smaller through hole 6, and the remaining gas is transported to the right end of the inner air inlet cylinder 4 and enters the outer nozzle cylinder 1 through the larger hole. This ensures a relatively uniform gas distribution between the outer nozzle cylinder 1 and the inner air inlet cylinder 4. Then, the combustion-supporting gas is introduced into the outer nozzle cylinder 1 through the combustion-supporting gas inlet pipe 5, thereby... The combustion gas and the combustion-supporting gas are mixed in the area between the outer cylinder 1 of the nozzle and the inner cylinder 4 of the air inlet. Under the obstruction of the arc-shaped wall on the left side of the annular baffle 8, the gas will generate a certain swirling, which allows the two to be mixed more fully. The mixed gas enters the conical section at the right end of the outer cylinder 1 of the nozzle through the gap between the annular baffle 8 and the inner cylinder 4. It is ignited by the igniter 7 to burn the gas. Because the combustion gas and the combustion-supporting gas are mixed more fully, the combustion will be more complete, reducing the waste of gas. A narrow tube 9 is also provided at the right end of the outer cylinder 1 of the nozzle. After the gas burns, it is squeezed by the narrow tube 9, which makes the burning gas generate higher pressure, increases the flow rate of the gas discharge, and then discharges into the flared tube 10, and finally discharges through the holes on the surface of the mesh plate 11.

[0020] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A nozzle structure for a high-efficiency burner, comprising a nozzle outer cylinder (1), characterized in that: The nozzle outer cylinder (1) is provided with an air inlet cylinder (4). A fixed wall (2) is fixed to the outer wall of the air inlet cylinder (4). The right side surface of the fixed wall (2) is fixed to the left end opening of the nozzle outer cylinder (1). A combustion-supporting air inlet pipe (5) is embedded in the fixed wall (2). The outlet end of the combustion-supporting air inlet pipe (5) is located on the right side of the fixed wall (2). A connecting flange (3) is fixed to the left end of the air inlet cylinder (4). A through hole (6) is opened on the side surface of the air inlet cylinder (4). The through holes (6) are all located on the right side of the fixed wall (2). The right end of the air inlet cylinder (4) is closed. An igniter (7) is fixedly installed on its right side surface. The igniter (7) is inside the nozzle outer cylinder (1).

2. The nozzle structure for a high-efficiency burner according to claim 1, characterized in that: The combustion-supporting air intake pipe (5) is arranged equidistantly around the central axis of the air intake inner cylinder (4).

3. The nozzle structure for a high-efficiency burner according to claim 1, characterized in that: The diameter of the through hole (6) gradually increases from left to right.

4. The nozzle structure for a high-efficiency burner according to claim 1, characterized by: The right end of the nozzle outer cylinder (1) is tapered, and the inner wall of the tapered section of the nozzle outer cylinder (1) is provided with an annular stop (8), and the left side wall of the annular stop (8) is provided with a concave arc surface.

5. The nozzle structure for a high-efficiency burner according to claim 4, characterized in that: A narrow tube (9) is fixed to the right end of the nozzle outer cylinder (1). The inner wall of the narrow tube (9) is set with an outwardly convex arc surface. A flared tube (10) is fixed to the right end of the narrow tube (9). A mesh plate (11) is fixedly connected to the right end of the flared tube (10).

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