A burner gas distributor

Abstract

The utility model belongs to the technical field of combustion equipment, especially, relate to a burner gas distribution pipe, first gas pipe setting in the inside of pipe body, with pipe body between formed air inlet passage, be used for conveying the air required for combustion, coaxially arranged second gas pipe in first gas pipe inside, form first gas passage between both, be used for conveying low heat value gas, coaxially arranged pilot tube in second gas pipe inside, form second gas passage between both, be used for conveying high heat value gas, pilot tube is located the central position, can be inhaled high energy ignition gas, ensure the reliable ignition of mixed gas, air inlet pipe sets up in the one side of pipe body and with air inlet passage intercommunication, can pass through the valve door regulation air flow, adapt to the air-fuel ratio demand of different gas, pipe body with first gas pipe between fixedly set up air outlet plate, the circumference on it evenly is equipped with a plurality of first air outlet hole, realize the preliminary even distribution of air, promote the mixing of gas and air.

Description

Technical Field

[0001] This utility model belongs to the field of combustion equipment technology, and in particular relates to a burner gas distribution pipe. Background Technology

[0002] In industrial combustion equipment, uniform mixing of fuel gas and air is crucial for achieving efficient combustion. Traditional burner gas distribution pipes often employ a single fuel gas channel design, making it difficult to adapt to the different combustion characteristics of fuel gas with different calorific values ​​(such as blast furnace gas and coke oven gas, byproducts of steel plants). Low-calorific-value fuel gas (such as blast furnace gas) has a slow flame propagation speed and poor combustion stability, requiring it to be used in combination with high-calorific-value fuel gas. However, existing gas distribution pipes lack a targeted mixing structure, which easily leads to incomplete combustion. High-calorific-value fuel gas (such as coke oven gas) is prone to air-fuel ratio imbalance due to composition fluctuations, making it difficult for existing equipment to achieve dynamic adaptation. Utility Model Content

[0003] The purpose of this utility model is to provide a burner gas distribution pipe to address the aforementioned technical problems, thereby solving the issues raised in the background art.

[0004] In view of this, the present invention provides a burner gas distribution pipe, wherein a first gas pipe is provided inside the pipe body, an air intake channel is formed between the pipe body and the first gas pipe, a second gas pipe is provided inside the first gas pipe, and a first gas passage is formed between the first gas pipe and the second gas pipe.

[0005] An ignition tube is installed inside the second gas pipe, and a second gas passage is formed between the second gas pipe and the ignition tube.

[0006] Air intake pipe, which is located on one side of the pipe body;

[0007] An air outlet plate is fixedly installed between the pipe body and the first gas pipe;

[0008] The first air outlet is provided on the air outlet plate with several first air outlets evenly distributed around its circumference.

[0009] In the above technical solution, a further step is to fix an abutment ring on the inner wall of the first gas pipe near the outlet end of the pipe body, and a number of first gas outlet holes are evenly opened on the circumference of the abutment ring.

[0010] In the above technical solution, further, a number of support plates are fixedly arranged on the inner wall circumference of the second gas pipe near the pipe body output end, and the other end of the support plate supports the ignition pipe, and a second gas outlet is formed between two adjacent support plates.

[0011] In the above technical solution, a ring groove is further provided on the air outlet plate, and several inclined plates are fixedly connected on the ring groove, with a second air outlet hole formed between two adjacent inclined plates.

[0012] In the above technical solution, furthermore, a number of through holes are evenly opened on the side wall circumference of the second gas pipe.

[0013] In the above technical solution, the outlet diameter of the tube body is further reduced.

[0014] Furthermore, the above technical solution also includes:

[0015] The gas distributor cap is fixedly connected to the output end of the pipe body.

[0016] In the above technical solution, furthermore, the air inlet end of the pipe body is fixedly connected to a support frame that fixes and limits the first gas pipe.

[0017] In the above technical solution, a first air inlet pipe is provided on one side of the first gas pipe, and a second air inlet pipe is provided on one side of the second gas pipe.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. The outlet end of the pipe adopts a tapered design to accelerate the mixing of airflow and promote the mixing of gas and air.

[0020] 2. An annular groove is provided on the gas outlet plate, and several inclined plates are fixedly connected to the annular groove to facilitate the formation of a rotating airflow, enhance the mixing effect with the gas, and improve the combustion efficiency of low-calorific-value gas.

[0021] 3. The gas distribution cover is fixedly connected to the output end of the pipe body. The gas distribution cover has several combustion channels. The number of channels can be set according to different needs to optimize the gas injection pattern. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of this utility model;

[0024] Figure 3 This is a cross-sectional view of the internal structure of this utility model;

[0025] Figure 4 This is a partial structural schematic diagram of the present invention;

[0026] The markings in the diagram are as follows: 1. Pipe body; 2. First gas pipe; 3. Second gas pipe; 4. Ignition pipe; 5. Gas distribution cover; 6. Air intake pipe; 7. Air outlet plate; 8. First air outlet; 9. Air intake channel; 10. First gas channel; 11. Second gas channel; 12. Abutment ring; 13. First air outlet; 14. Support plate; 15. Second air outlet; 16. Inclined plate; 17. Second air outlet; 18. Through hole; 19. Support frame; 20. First air intake pipe; 21. Second air intake pipe. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0028] Example 1:

[0029] This embodiment provides a burner gas distribution pipe, including:

[0030] Pipe body 1, a first gas pipe 2 is provided inside pipe body 1, an air intake channel 9 is formed between pipe body 1 and the first gas pipe 2, a second gas pipe 3 is provided inside the first gas pipe 2, and a first gas channel 10 is formed between the first gas pipe 2 and the second gas pipe 3.

[0031] Ignition tube 4 is installed inside the second gas pipe 3, and a second gas passage 11 is formed between the second gas pipe 3 and the ignition tube 4.

[0032] Air intake pipe 6, which is located on one side of pipe body 1;

[0033] An air outlet plate 7 is fixedly installed between the pipe body 1 and the first gas pipe 2;

[0034] The first air outlet 8 is provided on the air outlet plate 7 with several first air outlets 8 evenly distributed around its circumference.

[0035] As can be seen in this embodiment, the pipe body 1 is provided with a multi-layer nested through groove. The first gas pipe 2 is located inside the pipe body 1, forming an air intake channel 9 between it and the pipe body 1, which is used to transport the air required for combustion. The second gas pipe 3 is coaxially arranged inside the first gas pipe 2, forming a first gas channel 10 between them, which is used to transport low-calorific-value gas. The cross-sectional size of the channel is designed according to the flow requirements of the low-calorific-value gas. The ignition pipe 4 is coaxially arranged inside the second gas pipe 3, forming a second gas channel 11 between them, which is used to transport high-calorific-value gas. By matching the flow with the first gas channel 10, the insufficient combustion stability of the low-calorific-value gas is compensated. The ignition pipe 4 is located in the center and can be supplied with high-energy ignition gas to ensure reliable ignition of the mixed gas. The air intake pipe 6 is located on one side of the pipe body 1 and is connected to the air intake channel 9. The air flow can be adjusted by a valve to adapt to the air-fuel ratio requirements of different gases. An air outlet plate 7 is fixedly arranged between the pipe body 1 and the first gas pipe 2. Several first air outlet holes 8 are evenly opened on its circumference to achieve preliminary uniform distribution of air and promote the mixing of gas and air.

[0036] Example 2:

[0037] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] An abutment ring 12 is fixedly installed on the inner wall of the first gas pipe 2 near the output end of the pipe body 1, and a number of first gas outlet holes 13 are evenly opened on the circumference of the abutment ring 12.

[0039] As can be seen from this embodiment, an abutment ring 12 is fixedly provided on the inner wall of the first gas pipe 2 near the output end of the pipe body 1. Several first gas outlet holes 13 are evenly opened on the circumference of the abutment ring 12. The first gas outlet holes 13 adopt a reduction design, which can accelerate the gas flow rate and promote mixing.

[0040] Example 3:

[0041] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0042] Several support plates 14 are fixedly installed on the inner wall of the second gas pipe 3 near the output end of the pipe body 1, and the other end of the support plate 14 supports the ignition pipe 4. A second gas outlet 15 is formed between two adjacent support plates 14.

[0043] As can be seen in this embodiment, the support plate 14 is fixed along the inner circumference of the second gas pipe 3 near the output end, and the other end supports the ignition pipe 4 to ensure coaxiality. A second gas outlet 15 is formed between adjacent support plates 14 to ensure that the high-calorific-value gas in the second gas passage 3 is uniformly discharged.

[0044] Example 4:

[0045] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] An annular groove is provided on the air outlet plate 7, and several inclined plates 16 are fixedly connected to the annular groove. A second air outlet hole 17 is formed between two adjacent inclined plates 16.

[0047] As can be seen in this embodiment, an annular groove is provided on the air outlet plate 7, and several inclined plates 16 are fixedly connected to the annular groove. A second air outlet hole 17 is formed between two adjacent inclined plates 16. The inclination angle of the inclined plates 16 is 30°-45°, which facilitates the formation of a rotating airflow, enhances the mixing effect with the gas, improves the combustion efficiency of low-calorific-value gas, and increases the uniformity of gas-air mixing to more than 40%. The combustion efficiency of low-calorific-value gas is increased from the traditional 70%-75% to more than 85%, reducing energy waste.

[0048] Example 5:

[0049] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] The second gas pipe 3 has several through holes 18 evenly distributed around its side wall.

[0051] As can be seen from this embodiment, several through holes 18 are evenly opened on the circumference of the side wall of the second gas pipe 3, so that some high-calorific-value gas enters the first gas channel 10 and premixes with low-calorific-value gas.

[0052] Example 6:

[0053] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0054] The outlet diameter of tube 1 is gradually reduced.

[0055] As can be seen from this embodiment, the outlet diameter of the tube 1 is gradually reduced to enhance the gas flow rate and mixing effect.

[0056] Example 7:

[0057] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] Also includes:

[0059] The gas distribution cover 5 is fixedly connected to the output end of the pipe body 1.

[0060] As can be seen in this embodiment, the gas distribution cover 5 is fixedly connected to the output end of the pipe body 1. The gas distribution cover 5 has several combustion channels. The number of channels can be set according to different needs to optimize the gas injection pattern.

[0061] Example 8:

[0062] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0063] The inlet end of the pipe body 1 is fixedly connected to a support frame 19 that limits the position of the first gas pipe 2.

[0064] As can be seen from this embodiment, the support frame 19 is fixed to the air inlet end of the pipe body 1. One end of the support frame 19 extends into the inside of the pipe body 1 to fix and limit the first gas pipe 2, and the other end is fixedly connected to the pipe body 1 through a flange.

[0065] Example 9:

[0066] This embodiment provides a burner gas distribution pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0067] A first air inlet pipe 20 is provided on one side of the first gas pipe 2, and a second air inlet pipe 21 is provided on one side of the second gas pipe 3.

[0068] As can be seen from this embodiment, a first air inlet pipe 20 is provided on one side of the first gas pipe 2 for connecting high-calorific-value gas, and a second air inlet pipe 21 is provided on one side of the second gas pipe 3 for connecting low-calorific-value gas. Both are equipped with solenoid valves to regulate the flow rate and realize dynamic adjustment of the gas ratio.

[0069] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A burner gas distribution pipe, characterized in that, include: Pipe body (1), a first gas pipe (2) is provided inside the pipe body (1), an air intake channel (9) is formed between the pipe body (1) and the first gas pipe (2), a second gas pipe (3) is provided inside the first gas pipe (2), and a first gas channel (10) is formed between the first gas pipe (2) and the second gas pipe (3). Ignition tube (4), which is disposed inside the second gas pipe (3), and a second gas passage (11) is formed between the second gas pipe (3) and the ignition tube (4). An air intake pipe (6) is provided on one side of the pipe body (1); An air outlet plate (7) is fixedly installed between the pipe body (1) and the first gas pipe (2). The first air outlet (8) is provided with a plurality of first air outlets (8) evenly distributed around the circumference of the air outlet plate (7).

2. A burner gas distribution pipe according to claim 1, characterized in that, The first gas pipe (2) has a fixed abutment ring (12) on the inner wall of the side near the output end of the pipe body (1), and a number of first gas outlet holes (13) are evenly opened on the circumference of the abutment ring (12).

3. A burner gas distribution pipe according to claim 1, characterized in that, The second gas pipe (3) has several support plates (14) fixedly arranged on the inner wall of one side near the output end of the pipe body (1), and the other end of the support plate (14) supports the ignition pipe (4), and a second gas outlet (15) is formed between two adjacent support plates (14).

4. A burner gas distribution pipe according to claim 1, characterized in that, An annular groove is provided on the air outlet plate (7), and several inclined plates (16) are fixedly connected to the annular groove. A second air outlet hole (17) is formed between two adjacent inclined plates (16).

5. A burner gas distribution pipe according to claim 1, characterized in that, The second gas pipe (3) has several through holes (18) evenly distributed around its side wall circumference.

6. A burner gas distribution pipe according to claim 1, characterized in that, The outlet diameter of the tube (1) is gradually decreasing.

7. A burner gas distribution pipe according to claim 1, characterized in that, Also includes: The gas distribution cover (5) is fixedly connected to the output end of the pipe body (1).

8. A burner gas distribution pipe according to claim 1, characterized in that, The inlet end of the pipe body (1) is fixedly connected to a support frame (19) that limits the first gas pipe (2).

9. A burner gas distribution pipe according to claim 1, characterized in that, A first air inlet pipe (20) is provided on one side of the first gas pipe (2), and a second air inlet pipe (21) is provided on one side of the second gas pipe (3).

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