Combustion head structure with combustion end cooling function

Abstract

The utility model provides a combustion head structure with a combustion end cooling function, relates to the technical field of combustion heads, and adopts the main technical scheme that two ends of a main body are respectively a combustion end and a feeding end; the main body is provided with a first flow channel; the first runner extends from the main body feeding end to the main body combustion end and is used for reserving the stroke of fuel flowing from the main body feeding end to the main body combustion end; the main body is also provided with a feed port, a discharge port and a second runner; the combustion end of the main body is provided with the second flow channel; and the second runner is communicated with the feed port and the discharge port and is used for reserving the stroke of the cooling medium flowing from the feed port to the discharge port. The thermal stress of the combustion head under the high-temperature condition is effectively reduced, the high-temperature resistance of components is improved, and the service life of the whole equipment is prolonged. And simultaneously. The risk of material failure caused by local overheating can be reduced, and the safety coefficient of the operation process is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion heads, and more specifically to a combustion head structure with a combustion end cooling function. Background Art

[0002] Burners are a general term for devices that spray fuel and air in a certain way to mix and burn. Most of them are used in boilers and industrial furnaces that burn pulverized coal, liquid fuel, and gas fuel. They are devices that ensure stable ignition and complete combustion of fuel. In actual applications, burners with existing structures have excessively high temperatures, which can cause the burner's fire port and shell to deform or even burn, shortening their lifespan and posing certain safety risks. Utility Model Content

[0003] The utility model aims to provide a combustion head structure with a combustion end cooling function, which effectively reduces the thermal stress of the combustion head under high temperature conditions, improves the high temperature resistance of the components and the service life of the overall equipment.

[0004] The utility model is realized by the following technical solutions:

[0005] A burner head structure with a combustion end cooling function comprises a main body, wherein the two ends of the main body are a combustion end and a feed end respectively; the main body is provided with a first flow channel; the first flow channel extends along the main body feed end to the main body combustion end, and is used to reserve a stroke for the fuel to flow from the main body feed end to the main body combustion end; the main body is also provided with a feed port, a discharge port and a second flow channel; the main body combustion end is provided with the second flow channel; the second flow channel connects the feed port and the discharge port, and is used to reserve a stroke for the cooling medium to flow from the feed port to the discharge port.

[0006] Optionally, the discharge port is connected to the first flow channel and the second flow channel.

[0007] Optionally, the main body includes a first pipe fitting, a second pipe fitting and a ring; the two ends of the first pipe fitting are a combustion end and a feed end respectively; the pipeline of the first pipe fitting forms the first flow channel; the rings are provided at both ends of the second pipe fitting; the rings are both sleeved on the outer wall of the first pipe fitting, and are used to form the second flow channel between the outer wall of the first pipe fitting, the inner wall of the second pipe fitting and the two rings; the first pipe fitting is provided with a discharge port; the discharge port is located between the two rings.

[0008] Optionally, a plurality of the discharge ports are arranged around the axis direction of the first flow channel.

[0009] Optionally, a ring is connected to the end of the combustion end of the first pipe.

[0010] Optionally, another of the rings is connected to the end of the feed end of the first pipe.

[0011] Optionally, the other ring is provided with the feed port.

[0012] Optionally, a plurality of the feed ports are evenly arranged around the axis of the first flow channel.

[0013] Optionally, the combustion head structure with combustion end cooling function further includes a connecting plate; the connecting plate is sleeved on the outer wall of the second pipe member close to one end of the other ring to reserve a connection position for a cooling medium feeding device.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] ① Effectively reduces the thermal stress of the combustion head under high temperature conditions, improves the high temperature resistance of the components and the service life of the overall equipment.

[0016] ② It can reduce the risk of material failure caused by local overheating and increase the safety factor of the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 It is a schematic front view of a burner head structure with a combustion end cooling function in an embodiment;

[0019] Figure 2 A half-section schematic diagram of a burner head structure with a combustion end cooling function in an embodiment;

[0020] Figure 3 A schematic rear view of a burner head structure with a combustion end cooling function in an embodiment.

[0021] Marks and corresponding parts names in the attached drawings:

[0022] 1-main body; 11-first pipe; 12-second pipe; 13-ring;

[0023] 2-combustion end; 3-feeding end; 4-first flow channel; 5-feeding port; 6-discharging port; 7-second flow channel; 8-connecting plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0025] Example

[0026] This embodiment provides a combustion head structure with a combustion end cooling function, such as Figure 1-Figure 3 As shown, it includes a main body 1.

[0027] One end of the main body 1 is a feed end 3, which is used to reserve a feed position for fuel (such as coal powder, gas or liquid fuel). The other end of the main body 1 is a combustion end 2, which is used to reserve a combustion area for the fuel.

[0028] A first flow channel 4 is arranged inside the main body 1, and the first flow channel 4 is specially designed for transporting fuel. Starting from the feed end 3 of the main body 1, the first flow channel 4 extends along the main body 1 to the combustion end 2 of the main body 1, providing a stable conveying path for the fuel to ensure that the fuel can be effectively transported to the combustion area of ​​the combustion end 2.

[0029] A second flow channel 7 is provided at the combustion end 2 of the main body 1, and the second flow channel 7 is independent of the first flow channel 4. Preferably, the second flow channel 7 is provided around the axis direction of the first flow channel 4.

[0030] A feed port 5 is also provided on the main body 1 , and the feed port 5 is communicated with the second flow channel 7 , and is used to reserve a position for a cooling medium (such as water, air or other suitable cooling liquid) to enter the second flow channel 7 .

[0031] The main body 1 is also provided with a discharge port 6 , which is in communication with the second flow channel 7 and is used to reserve a position for the cooling medium in the second flow channel 7 to flow out of the second flow channel 7 .

[0032] The feed port 5, the discharge port 6 and the second flow channel 7 in the structure form a cooling system that allows the cooling medium to enter the second flow channel 7 of the combustion end 2 from the feed port 5, flow through the second flow channel 7, and then flow out from the discharge port 6. When the fuel enters the first flow channel 4 from the feed end 3, flows along the first flow channel 4 to the combustion end 2, and burns in the combustion area of ​​the combustion end 2, the cooling medium enters the second flow channel 7 from the feed port 5, and flows along the second flow channel 7 to the discharge port 6, thereby taking away the high-temperature heat generated at the combustion end 2 during the combustion of the fuel.

[0033] Through this structure, at least the following beneficial effects are achieved:

[0034] ① It is convenient to adjust the flow rate and temperature of the cooling medium at the feed port 5, and then flexibly adjust the cooling effect of the combustion end 2 to achieve the purpose of effective protection of the combustion head.

[0035] ② The cooling medium in the second flow channel 7 takes away the heat, which effectively reduces the thermal stress of the burner head under high temperature conditions, thereby reducing the risk of material oxidation, deformation or damage due to high temperature, thereby improving the high temperature resistance of the components and the service life of the overall equipment.

[0036] ③ It can reduce the risk of material failure caused by local overheating and increase the safety factor of the operation process.

[0037] For example, when fuel is burned, air required for fuel combustion needs to be provided, and in order to improve the effect of fuel combustion, most people choose to premix the fuel with air. Therefore, in order to facilitate the air used as cooling medium, it is put into the first flow channel 4 for reuse. In this embodiment, Figure 1 Combination Figure 2 As shown, the discharge port 6 is connected to the first flow channel 4 and the second flow channel 7. Through this structure, after the air enters from the feed port 5, flows through the second flow channel 7, and carries away part of the heat of the combustion end 2, the air carrying the heat flows into the first flow channel 4 through the discharge port 6, and flows to the combustion area of ​​the combustion end 2 together with the fuel in the first flow channel 4. On the one hand, in the process of air flowing to the combustion area of ​​the combustion end 2, if the air temperature is lower than the temperature of the combustion end 2, the combustion end 2 can be cooled again, thereby achieving the purpose of further improving the cooling effect. On the other hand, after the air flows into the combustion area of ​​the combustion end 2, it can provide the oxygen required for the combustion of the fuel. On the other hand, in the process of air flowing to the combustion end 2, it can be premixed with the fuel to achieve the purpose of improving the combustion effect of the fuel.

[0038] For example, in this embodiment, Figure 2As shown, the main body 1 includes a first pipe 11, a second pipe 12 and a ring 13. The first pipe 11 is the main part of the main body 1, and its two ends are respectively a combustion end 2 and a feed end 3, and the fuel flows in the pipeline (i.e., the first flow channel 4) formed inside the first pipe 11. The second pipe 12 is designed to be a part sleeved on the outer wall of the first pipe 11, and the second pipe 12 is connected with a ring 13 by welding, screwing or integral molding. The number of the rings 13 is set to two, and the two rings 13 are respectively set at the two ends of the second pipe 12. And the ends of the two rings 13 away from the second pipe 12 are connected to the first pipe 11 by welding, screwing or integral molding, forming a second flow channel 7 space around the outer wall of the first pipe 11. The first pipe 11 is provided with a discharge port 6, which is located between the two rings 13 to connect the first flow channel 4 and the second flow channel 7. The feed port 5 can be arranged on the second pipe 12, or on the ring 13, or on both the second pipe 12 and the ring 13. That is, the cooling medium (such as air) can enter the second flow channel 7 from the feed port 5, flow through the portion of the second flow channel 7 surrounding the outer wall of the combustion end 2 of the first pipe 11, and then flow into the first flow channel 4 from the discharge port 6.

[0039] ① By allowing the cooling medium to flow through the second flow channel 7 on the outer wall of the first pipe 11, the heat generated by the combustion end 2 can be effectively absorbed, thereby ensuring the stability and durability of the combustion head in a high-temperature working environment.

[0040] ② The design of using the ring 13 to construct the inner and outer double-layer flow channels makes the entire burner head structure more compact and highly functionally integrated, saving equipment space.

[0041] For example, in this embodiment, Figure 2 As shown, there are several discharge ports 6, and the several discharge ports 6 are arranged on the first pipe 11 around the axis of the first flow channel 4 in the first pipe 11. By providing several discharge ports 6, the efficiency of the air in the second flow channel 7 flowing into the first flow channel 4 can be improved, thereby improving the efficiency of heat exchange of the air in the second flow channel 7, so as to achieve the purpose of improving the cooling effect. Preferably, the several discharge ports 6 are evenly arranged on the first pipe 11 around the axis of the first flow channel 4 in the first pipe 11, so as to achieve the purpose of improving the air exchange efficiency and improving the uniformity of the air flow in the process of the air flowing from the second flow channel 7 through each discharge port 6 into the first flow channel 4, thereby improving the cooling uniformity of each part of the combustion end 2.

[0042] For example, in this embodiment, Figure 2As shown, of the two rings 13 on the second pipe 12, one ring 13 close to the combustion end 2 of the first pipe 11 is connected to the end of the combustion end 2 of the first pipe 11. Through this structure, the second flow channel 7 is as close to the combustion end 2 of the first pipe 11 as possible, thereby achieving the purpose of improving the cooling effect of the end of the combustion end 2.

[0043] For example, in this embodiment, Figure 2 As shown, of the two rings 13 on the second pipe 12, one ring 13 close to the feed end 3 of the first pipe 11 is connected to the end of the feed end 3 of the first pipe 11. With this structure, the two ends of the second flow channel 7 are as close as possible to the two ends of the second pipe 12, thereby increasing the inner volume of the second flow channel 7, thereby increasing the cooling medium capacity in the second flow channel 7, and further improving the cooling effect of the combustion end 2.

[0044] For example, when gas combustion is performed, gas and air are usually introduced from the feed end 3 of the first pipe 11 to form a mixed gas. Therefore, in order to facilitate the process of introducing air into the first flow channel 4, part of the air is introduced into the second flow channel 7 as a cooling medium. In this embodiment, Figure 2 As shown, of the two rings 13 on the second pipe 12, a ring 13 close to the feeding end 3 of the first pipe 11 is provided with a feeding port 5. With this structure, it is convenient to pass part of the air into the second flow channel 7 through the feeding port 5 on the first ring 13 during the process of passing the air into the first flow channel 4.

[0045] Exemplarily, in order to increase the speed at which the cooling medium flows into the second flow channel 7. In this embodiment, Figure 2 As shown, the feed ports 5 are provided with a plurality of feeding ports, and the plurality of feed ports 5 are arranged around the axis direction of the first flow channel 4. By providing a plurality of feed ports 5, the efficiency of the cooling medium passing from the feed ports 5 to the second flow channel 7 is improved. Preferably, the plurality of feed ports 5 are evenly arranged on the ring 13, so as to improve the uniformity of the cooling medium flowing into the second flow channel 7.

[0046] For example, the number of feed ports 5 corresponds to the number of discharge ports 6, and the feed ports 5 and the discharge ports 6 are evenly arranged around the axial direction of the first flow channel 4. A unique cooling medium flow path is formed between any feed port 5, the second flow channel 7, and the discharge port 6 corresponding to the feed port 5, and at the same time, the structures of the flow paths are the same, and only differ in position. This achieves the purpose of improving the uniformity of the cooling medium entering the second flow channel 7 and the first flow channel 4, and further improving the uniformity of the cooling effect on the combustion end 2.

[0047] Exemplarily, in order to facilitate the connection of the cooling medium feeding device to the combustion head. Figure 1As shown, the burner head structure with combustion end cooling function also includes a connecting plate 8, which is sleeved on the outer wall of the second pipe 12, and the connecting plate 8 is connected to the outer wall of the ring 13 on the second pipe 12 near the feed end 3 by welding, screwing or integral molding. Through this structure, it is convenient to connect the feeding device for passing the cooling medium to the ring 13 on the second pipe 12 near the feed end 3, and pass the cooling medium into the second flow channel 7 through the feed port 5 on the ring 13.

[0048] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A combustion head structure with combustion end cooling function, characterized in that: include: A main body (1), wherein two ends of the main body (1) are respectively a combustion end (2) and a feed end (3); the main body (1) is provided with a first flow channel (4); the first flow channel (4) extends along the feed end (3) of the main body (1) toward the combustion end (2) of the main body (1), and is used to reserve a travel distance for the fuel to flow from the feed end (3) of the main body (1) to the combustion end (2) of the main body (1); The main body (1) is also provided with a feed port (5), a discharge port (6) and a second flow channel (7); the combustion end (2) of the main body (1) is provided with the second flow channel (7); the second flow channel (7) is connected with the feed port (5) and the discharge port (6) and is used to reserve a distance for the cooling medium to flow from the feed port (5) to the discharge port (6).

2. A combustion head structure with combustion end cooling function according to claim 1, characterized in that: The discharge port (6) is connected to the first flow channel (4) and the second flow channel (7).

3. A combustion head structure with combustion end cooling function according to claim 2, characterized in that: The main body (1) comprises a first pipe member (11), a second pipe member (12) and a ring (13); The two ends of the first pipe member (11) are respectively a combustion end (2) and a feed end (3); The pipeline of the first pipe member (11) forms the first flow channel (4); The rings (13) are provided at both ends of the second pipe (12); The rings (13) are sleeved on the outer wall of the first pipe (11) and are used to form the second flow channel (7) between the outer wall of the first pipe (11), the inner wall of the second pipe (12) and the two rings (13); The first pipe member (11) is provided with a discharge port (6); The discharge port (6) is located between the two rings (13).

4. A combustion head structure with combustion end cooling function according to claim 3, characterized in that: The plurality of discharge ports (6) are arranged around the axis of the first flow channel (4).

5. The burner head structure with combustion end cooling function according to claim 3, characterized in that: A ring (13) is connected to the end of the combustion end (2) of the first pipe (11).

6. A combustion head structure with combustion end cooling function according to claim 5, characterized in that: The other ring (13) is connected to the end of the feed end (3) of the first pipe (11).

7. A combustion head structure with combustion end cooling function according to claim 6, characterized in that: The other ring (13) is provided with the feed port (5).

8. A combustion head structure with combustion end cooling function according to claim 7, characterized in that: The plurality of feed ports (5) are evenly arranged around the axis of the first flow channel (4).

9. A burner head structure with combustion end cooling function according to any one of claims 7 or 8, characterized in that: Also includes a connecting plate (8); The connecting plate (8) is sleeved on the outer wall of the second pipe (12) at one end close to the other ring (13) to reserve a connection position for a cooling medium feeding device.

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