Multi-layer multi-angle nozzle burner
By designing a multi-layer, multi-angle nozzle burner, and utilizing a combination structure of gas and air rings and horn-shaped combustion ports at different angles, the problems of uneven gas mixing and low combustion efficiency in the burner were solved, achieving a highly efficient and stable combustion effect.
Patent Information
- Application Number
- CN202422881908.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing burners suffer from problems such as uneven gas mixing, incomplete combustion, unstable airflow, and low combustion efficiency, and existing improvement measures have not been effective.
A multi-layer, multi-angle nozzle burner is designed. By setting gas and air circulation channels inside the burner and setting horn combustion ports at different angles at the horn combustion port, uniform gas mixing and stable combustion can be achieved.
It improves combustion efficiency and airflow stability, ensures uniform gas mixing and combustion intensity, and controls the excess air coefficient between 1.02 and 1.05, thus achieving a highly efficient and stable combustion process.
Smart Images
Figure CN223525132U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to burner technical field more specifically, the utility model relates to a kind of multilayer multi-angle nozzle burner. BACKGROUND
[0002] Burner is the equipment that industrial hot blast stove must use, and hot blast stove burns fuel is blast furnace gas, uses excess air method to carry out combustion control, in the prescribed combustion time, keep optimum combustion state combustion;Therefore, burner is one of important parts in hot blast stove, and whether the structure of burner is reasonable directly influences the thermal efficiency of hot blast stove.
[0003] All the time, gas mixes unevenly, combustion is not sufficient, airflow is unstable, and combustion efficiency is low, and these phenomena are always problems existing in existing burner. Although various improvements have been made to the combustion device, the effect is still unsatisfactory. Therefore, a multilayer multi-angle nozzle burner is proposed. UTILITY MODEL CONTENT
[0004] In order to overcome the problems and defects in the prior art, the utility model provides a multilayer multi-angle nozzle burner to solve the problems raised in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a multilayer multi-angle nozzle burner, comprising a burner body, a vault, an air inlet pipe and a gas inlet pipe, the burner body is composed of an arc-shaped wall of the vault and a straight section wall connected below the vault;
[0006] The arc-shaped wall of the lower half of the vault is provided with an air inlet pipe on the outer side wall, the straight section wall below the vault is provided with a gas inlet pipe on the outer side wall, the arc-shaped wall of the vault is provided with an air ring inside, the straight section wall below the vault is provided with a gas ring inside, the gas ring is provided with a gas distribution channel uniformly distributed in the circumferential direction inside the inner side wall, the gas distribution channel is provided with a mixed gas channel on one side surface inside, the gas ring is provided with a vertical first air distribution channel below the air ring, and the mixed gas channel is provided with a horn combustion port inside.
[0007] Preferably, the first air distribution channel is provided with a second air distribution channel on one side surface, which is in communication with the mixed gas channel.
[0008] Preferably, the gas distribution channel and the first air distribution channel are alternately arranged inside the gas ring.
[0009] Preferably, the trumpet combustion port is divided into four layers from top to bottom, including first trumpet combustion port, second trumpet combustion port, third trumpet combustion port and fourth trumpet combustion port arranged from top to bottom, and the first trumpet combustion port, the second trumpet combustion port, the third trumpet combustion port and the fourth trumpet combustion port are all communicated with the gas distribution channel, the second air distribution channel and the mixed gas channel.
[0010] Preferably, the air inlet pipe and the gas inlet pipe are arranged vertically in the same vertical direction.
[0011] Preferably, the first trumpet combustion port is a vertical burner center axis direct injection combustion, the second trumpet combustion port center line and the mixed gas channel center line form an 8-20° rotary cutting angle injection combustion, the third trumpet combustion port center line and the mixed gas channel center line form a 10-30° rotary cutting angle injection combustion, and the fourth trumpet combustion port center line and the mixed gas channel center line form a 20-40° rotary cutting angle injection combustion.
[0012] Preferably, the air ring channel is arranged to be small at the top and large at the bottom, the gas ring channel does not have a gas distribution channel corresponding to the gas inlet pipe, and the air ring channel does not have a first air distribution channel corresponding to the air inlet pipe.
[0013] The technical effects and advantages of the utility model are as follows:
[0014] 1. By arranging the gas distribution channel in the inner side of the gas ring channel, the first air distribution channel below the air ring channel and the second air distribution channel connected therewith, the gas and air can be fully distributed and mixed, the trumpet combustion port is divided into four layers from top to bottom, and all are communicated with the gas distribution channel, the second air distribution channel and the mixed gas channel, which further promotes the uniformity of gas mixing, and the design of trumpet combustion ports with different angles, including the vertical direct injection combustion of the first trumpet combustion port and the different rotary cutting angle injection combustion of the second trumpet combustion port, the third trumpet combustion port and the fourth trumpet combustion port, so that the multi-angle rotary flow gas can be fully mixed and burned in the vortex area, and the combustion efficiency is improved.
[0015] 2. The air ring channel is arranged to be small at the top and large at the bottom, which is beneficial to the balanced distribution of the airflow flowing from the lower wide part, so that the airflow is more stable, the gas and air are distributed and mixed through the specific channel, the airflow is prevented from being disturbed, the airflow stability in the combustion process is ensured, the gas is fully mixed and burned, and the multi-angle injection combustion mode improves the combustion intensity. The innovative design of the burner is excellent in gas mixing, combustion efficiency and airflow stability, and has good use effect. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the burner body below the present invention.
[0018] Figure 3 The burner body of this utility model Figure 2 A schematic diagram of one of the structural angles of the horn combustion port.
[0019] Figure 4 The burner body of this utility model Figure 2 Schematic diagram of the second angle of the horn combustion port.
[0020] Figure 5 The burner body of this utility model Figure 2 Schematic diagram of the third angle of the horn combustion port.
[0021] Figure 6 This is a schematic diagram of the internal structure of the burner body of this utility model.
[0022] Figure 7 This is a schematic diagram of the cross-sectional structure of the burner body above the present invention.
[0023] The attached diagram is labeled as follows: 1. Dome; 2. Air inlet pipe; 3. Gas inlet pipe; 4. Air loop; 5. Gas loop; 6. First air distribution channel; 7. Gas distribution channel; 8. Burner body; 9. Second air distribution channel; 10. Mixed gas channel; 11. Horn-shaped combustion port; 111. First horn-shaped combustion port; 112. Second horn-shaped combustion port; 113. Third horn-shaped combustion port; 114. Fourth horn-shaped combustion port. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] As attached Figures 1-4 The multi-layer multi-angle nozzle burner shown includes a burner body 8, an arch 1, an air inlet pipe 2 and a gas inlet pipe 3. The burner body 8 is composed of an arc-shaped wall of the arch 1 and a straight section wall connected below the arch 1.
[0026] The arc-shaped wall outside wall of the lower half of the arch 1 is provided with an air inlet pipe 2, the straight section wall below the arch 1 is provided with a gas inlet pipe 3, the arc-shaped wall of the arch 1 is internally provided with an air ring channel 4, the straight section wall below the arch 1 is internally provided with a gas ring channel 5, the gas ring channel 5 is internally provided with a gas distribution channel 7 which is uniformly distributed in the circumferential direction, the gas distribution channel 7 is internally provided with a mixed gas channel 10 which is formed on one side surface, the gas ring channel 5 is internally provided with a vertical first air distribution channel 6, and the mixed gas channel 10 is internally provided with a horn combustion port 11.
[0027] As shown in the accompanying drawings Figure 1 , 2 , the first air distribution channel 6 is provided with a second air distribution channel 9 which is connected with the mixed gas channel 10 on one side surface, and the gas distribution channel 7 and the first air distribution channel 6 are alternately arranged in the gas ring channel 5, so as to facilitate gas mixing and improve combustion efficiency.
[0028] As shown in the accompanying drawings Figure 1 , the horn combustion port 11 is divided into a plurality of layers in the vertical direction, including a first horn combustion port 111, a second horn combustion port 112, a third horn combustion port 113 and a fourth horn combustion port 114 which are sequentially arranged from top to bottom, and the first horn combustion port 111, the second horn combustion port 112, the third horn combustion port 113 and the fourth horn combustion port 114 are all connected with the gas distribution channel 7, the second air distribution channel 9 and the mixed gas channel 10, so as to further promote the uniformity of gas mixing.
[0029] As shown in the accompanying drawings Figure 1 , 2 , 4, the air inlet pipe 2 and the gas inlet pipe 3 are arranged in the same vertical direction, air enters the air inlet pipe 2 and then passes through the air ring channel 4, and gas enters the gas inlet pipe 3 and then passes through the gas ring channel 5, and this relatively orderly vertical flow path is conducive to the mixing and distribution of subsequent air and gas in the burner, and provides a good basis for uniform mixing and combustion.
[0030] As shown in the accompanying drawings Figure 1 , the first horn combustion port 111 is a vertical burner central axis straight jet combustion, the second horn combustion port 112 center line and the mixed gas channel center line form an 8-20° rotary cutting angle jet combustion, the third horn combustion port 113 center line and the mixed gas channel center line form a 10-30° rotary cutting angle jet combustion, and the fourth horn combustion port 114 center line and the mixed gas channel center line form a 20-40° rotary cutting angle jet combustion, which provides different rotary cutting angle jet combustion, so that multi-angle rotary flow gas can be fully mixed and combusted in the vortex area, improves the combustion efficiency, and the air excess coefficient can be controlled between 1.02-1.05, which ensures the sufficiency of combustion.
[0031] Wherein the trumpet combustion port 11 can be provided as a two-layer structure composed of the first trumpet combustion port 111 and the second trumpet combustion port 112;
[0032] The first trumpet combustion port 111, the second trumpet combustion port 112 and the third trumpet combustion port 113 form a three-layer structure;
[0033] The first trumpet combustion port 111, the second trumpet combustion port 112, the third trumpet combustion port 113 and the fourth trumpet combustion port 114 form a four-layer structure;
[0034] Or any number of the first trumpet combustion port 111, the second trumpet combustion port 112, the third trumpet combustion port 113 and the fourth trumpet combustion port 114 form a multi-layer structure.
[0035] As shown in the accompanying Figure 1 , 4 , the air ring channel 4 is provided as being small at the top and large at the bottom, the gas ring channel 5 is not provided with the gas distribution channel 7 on the corresponding surface of the gas inlet pipe 3, and the air ring channel 4 is not provided with the first air distribution channel 6 on the corresponding surface of the air inlet pipe 2, which is beneficial to the balanced distribution of the airflow when the airflow flows from the lower part, so that the airflow is more stable.
[0036] The utility model discloses a kind of multi-layer multi-angle nozzle burners, in the use process, air enters burner by being arranged on the air inlet pipe 2 of the semicircular wall outer side wall of lower half part of vault 1, air enters the air ring channel 4 that is provided in semicircular wall of vault 1, since air ring channel 4 is provided as being small at the top and large at the bottom, airflow flows from the lower part, this small at the top and large at the bottom structure is beneficial to the balanced distribution of the airflow, gas enters burner by being arranged on the gas inlet pipe 3 of the straight section wall outer side wall below vault 1, gas enters the gas ring channel 5 that is provided in straight section wall below vault 1, along circumferential direction evenly distributed gas distribution channel 7 in the inner side wall of gas ring channel 5, gas is distributed by gas distribution channel 7;
[0037] Mixed gas passage 10 is arranged on the inner side surface of gas distribution channel 7, vertical first air distribution channel 6 is arranged in the inner side of gas ring channel 5 and below air ring channel 4, second air distribution channel 9, which is communicated with mixed gas passage 10, is arranged on the side surface of first air distribution channel 6, and air enters mixed gas passage 10 and mixes with gas by first air distribution channel 6 and second air distribution channel 9.
[0038] The inside of the mixed gas passage 10 is provided with a trumpet combustion port 11, which is divided into four layers from top to bottom, including a first trumpet combustion port 111, a second trumpet combustion port 112, a third trumpet combustion port 113 and a fourth trumpet combustion port 114 in sequence from top to bottom, and the four layers of the trumpet combustion ports are all communicated with the gas distribution passage 7, the second air distribution passage 9 and the mixed gas passage 10, the first trumpet combustion port 111 is vertically injected and combusted along the central axis of the vertical burner, the central line of the second trumpet combustion port 112 is injected and combusted at a rotational cutting angle of 8-20° with the central line of the mixed gas passage, the central line of the third trumpet combustion port 113 is injected and combusted at a rotational cutting angle of 10-30° with the central line of the mixed gas passage, and the central line of the fourth trumpet combustion port 114 is injected and combusted at a rotational cutting angle of 20-40° with the central line of the mixed gas passage, different vortexes are generated through different angles, the uneven phenomenon of the flow field of the rotational flow gas is avoided, the columnar nozzle flame is injected and then runs and distributes from top to bottom opposite to the vortex area, the multi-angle rotational flow gas makes the vortex area fully mixed and combusted, the combustion efficiency is improved, and the air excess coefficient can be controlled between 1.02-1.05.
[0039] Finally, the above-mentioned embodiments only exemplarily illustrate the principle and effect of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.
Claims
1. A multi-layer multi-angle nozzle burner comprising a burner body (8), a dome (1), an air inlet pipe (2) and a gas inlet pipe (3), characterized in that: The burner body (8) is composed of an arc wall of the vault (1) and a straight wall connected below the vault (1); The arc wall of the lower half of the vault (1) is provided with an air inlet pipe (2) on the outer side wall, the straight wall below the vault (1) is provided with a gas inlet pipe (3) on the outer side wall, the arc wall of the vault (1) is internally provided with an air ring (4), the straight wall below the vault (1) is internally provided with a gas ring (5), the inner side wall of the gas ring (5) is provided with uniformly distributed gas distribution channels (7) in the circumferential direction, a mixed gas channel (10) is formed on one side surface of the gas distribution channel (7), a vertical first air distribution channel (6) is arranged on the inner side of the gas ring (5) and below the air ring (4), and a horn combustion port (11) is arranged on the inner side of the mixed gas channel (10).
2. The multi-layer multi-angle nozzle combustor of claim 1, wherein: A second air distribution channel (9) is formed on one side surface of the first air distribution channel (6) and communicates with the mixed gas channel (10).
3. The multi-layer multi-angle nozzle combustor of claim 1, wherein: The gas distribution channels (7) and the first air distribution channels (6) are alternately arranged on the inner side of the gas ring (5).
4. The multi-layer multi-angle nozzle combustor of claim 1, wherein: The horn combustion port (11) is divided into an upper and lower multi-layer structure, including a first horn combustion port (111), a second horn combustion port (112), a third horn combustion port (113) and a fourth horn combustion port (114) arranged from top to bottom, and the first horn combustion port (111), the second horn combustion port (112), the third horn combustion port (113) and the fourth horn combustion port (114) are in communication with the gas distribution channel (7), the second air distribution channel (9) and the mixed gas channel (10).
5. The multi-layer multi-angle nozzle combustor of claim 1, wherein: The air inlet pipe (2) and the gas inlet pipe (3) are arranged vertically above and below each other.
6. The multi-layer multi-angle nozzle combustor of claim 4, wherein: The first horn combustion port (111) is a vertical burner center axis direct injection combustion, the second horn combustion port (112) has a center line forming an 8-20° rotary cutting angle with the center line of the mixed gas channel for jet combustion, the third horn combustion port (113) has a center line forming a 10-30° rotary cutting angle with the center line of the mixed gas channel for jet combustion, and the fourth horn combustion port (114) has a center line forming a 20-40° rotary cutting angle with the center line of the mixed gas channel for jet combustion.
7. The multi-layer multi-angle nozzle combustor of claim 1, wherein: The air ring (4) is arranged to be smaller at the top and larger at the bottom, the gas ring (5) does not have a gas distribution channel (7) on the corresponding surface of the gas inlet pipe (3), and the air ring (4) does not have a first air distribution channel (6) on the corresponding surface of the air inlet pipe (2).