Hydrogen-burning gas stable-burning burning surface

Abstract

The utility model discloses a hydrogen-burning gas stable-burning burning surface which comprises an upper box body and a lower box body, a water-cooling pipe row I and a water-cooling pipe row II are communicated between the upper box body and the lower box body, the water-cooling pipe row I comprises a plurality of water-cooling pipes I, and the water-cooling pipe row II comprises a plurality of water-cooling pipes II. A sealing plate I and a sealing plate II are fixedly connected between every two adjacent water-cooling pipes I. A plurality of guide plates are fixedly connected in the long holes. A sealing plate I and a sealing plate II are fixedly connected between every two adjacent water-cooling pipes I. The water-cooling pipe row II is located on the downstream of the first gas channel. A second gas channel is formed between every two adjacent water-cooling pipes II. A cavity is formed in the downstream of the sealing plate II; the water-cooling tube row I and the water-cooling tube row II are both located in the hearth, a divergent premixing box is arranged on the upstream of the water-cooling tube row I, and a flow equalizing plate is arranged in the divergent premixing box. A high-speed low-pressure stable combustion surface can be formed, backfire is prevented, combustion is sufficient, generation of nitric oxide is reduced, and flame combustion is more stable.

Description

Technical Field

[0001] This utility model relates to the field of boiler burner technology, and in particular to a hydrogen-fueled gas stable combustion surface. Background Technology

[0002] As is well known, with increasing societal attention to environmental pollution, heavily polluting fuels are gradually being phased out, and more and more clean energy sources are being widely used. Natural gas and hydrogen, as important clean energy sources, possess characteristics such as being green, low-carbon, and clean. The combustion surface of a gas-fired boiler plays a crucial role in reducing pollutant formation. However, existing burners generally suffer from problems such as high flame temperatures during combustion, high nitrogen oxide emissions, susceptibility to backfire, and inability to achieve a stable combustion surface. Therefore, a hydrogen-fired gas-stabilized combustion surface is proposed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a stable combustion surface for hydrogen fuel gas to solve the problems existing in the prior art. It can form a high-speed, low-pressure, and stable combustion surface, which can ensure complete combustion, reduce nitrogen oxide emissions, prevent backfire, and make combustion more stable.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a hydrogen-fueled gas stable combustion surface, comprising:

[0005] The enclosure comprises an upper chamber and a lower chamber, connected by a water-cooled pipe array I and a water-cooled pipe array II. The water-cooled pipe array I is located upstream of the water-cooled pipe array II. The water-cooled pipe array I includes several water-cooled pipes I, and the water-cooled pipe array II includes several water-cooled pipes II. Each water-cooled pipe I has an elongated hole, and several guide plates are fixedly connected inside the elongated hole. A sealing plate I and a sealing plate II are fixedly connected between two adjacent water-cooled pipes I. The sealing plate I is located upstream of the sealing plate II. A first gas channel is formed between two adjacent guide plates. The water-cooled pipe array II is located downstream of the first gas channel, and a second gas channel is formed between two adjacent water-cooled pipes II. A cavity is formed downstream of the sealing plate II.

[0006] Both the water-cooled pipe bank I and the water-cooled pipe bank II are located inside the furnace. A gradually expanding premixing box is provided upstream of the water-cooled pipe bank I, and a flow equalization plate is provided inside the gradually expanding premixing box.

[0007] This invention discloses the following technical effects: In this device, the gas mixture enters a gradually expanding premixing box after being mixed at the front of the burner. After being evenly distributed by a flow equalization plate, it enters the first gas channel of the combustion surface, then passes through a cavity and ignites through the second gas channel. Water-cooled pipe bank I and water-cooled pipe bank II form a cavity. The design of water-cooled pipe II forms an annular bluff body. After the premixed combustible gas flows through the bluff body, a backflow zone is generated in the bluff body's wake. The high-temperature backflow gas provides a continuous ignition source for the premixed gas, thereby forming a stable ignition ring downstream of the bluff body, enabling the high-speed premixed combustible gas to begin stable ignition and combustion. This invention can form a high-speed, low-pressure, stable combustion surface, prevent backfire, ensure complete combustion, reduce the generation of nitrogen oxides, and make the flame combustion more stable. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the hydrogen-fueled gas stable combustion surface structure of this utility model;

[0010] Figure 2 for Figure 1 Schematic diagram of the A-direction structure;

[0011] Figure 3 for Figure 1 Schematic diagram of the B-direction structure;

[0012] Among them, 1. Water-cooled pipe I; 2. Water-cooled pipe II; 3. Sealing plate I; 4. Sealing plate II; 5. First gas channel; 6. Cavity; 7. Second gas channel; 8. Guide plate; 9. Upper chamber; 10. Water-cooled pipe row I; 11. Lower chamber; 12. Water-cooled pipe row II; 13. Flame; 14. Furnace chamber; 15. Gradual expansion premixing box; 16. Flow equalization plate. Detailed Implementation

[0013] 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.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Example 1

[0016] Reference Figure 1-3 This utility model provides an upper box 9 and a lower box 11, with a water-cooled pipe bank I 10 and a water-cooled pipe bank II 12 connected between the upper box 9 and the lower box 11. The water-cooled pipe bank I 10 is located upstream of the water-cooled pipe bank II 12. The water-cooled pipe bank I 10 includes a plurality of water-cooled pipes I 1, and the water-cooled pipe bank II 12 includes a plurality of water-cooled pipes II 2. The water-cooled pipes I 1 have elongated holes, and a plurality of guide plates 8 are fixedly connected in the elongated holes. A sealing plate I 3 and a sealing plate II 4 are fixedly connected between two adjacent water-cooled pipes I 1. The sealing plate I 3 is located upstream of the sealing plate II 4. A first gas channel 5 is formed between two adjacent guide plates 8. The water-cooled pipe bank II 12 is located downstream of the first gas channel 5, and a second gas channel 7 is formed between two adjacent water-cooled pipes II 2.

[0017] Both water-cooled pipe bank I10 and water-cooled pipe bank II12 are located inside the furnace. A gradually expanding premixing box 15 is installed upstream of water-cooled pipe bank I10, and a flow equalization plate 16 is installed inside the gradually expanding premixing box 15.

[0018] In this device, the air from the blower (not shown in the figure) and the gas from the gas pipeline (not shown in the figure) are mixed in front of the burner and then enter the gradually expanding premixing box 15. After being evenly distributed by the flow equalization plate 16, it enters the first gas channel 5 of the combustion surface, then passes through the cavity 6 and then the second gas channel 7 for ignition and combustion. The water-cooled pipe row I1 and the water-cooled pipe row II2 form a cavity. The design of the water-cooled pipe II2 forms an annular bluff body. After the premixed combustible gas flows through the bluff body, a backflow zone is generated in the bluff body trail. The high-temperature gas of the backflow provides a continuous ignition source for the premixed gas, thereby forming a stable ignition ring downstream of the bluff body, so that the high-speed premixed combustible gas can start to ignite and burn stably.

[0019] The upper chamber 9 and the lower chamber 11 contain water. The water in the lower chamber 11 has initial pressure. The water flows into the upper chamber 9 through water cooling pipe I1 and water cooling pipe II2. Water cooling pipe I1 and water cooling pipe II2 absorb the heat of the flame.

[0020] Figure 1 The image shows the burning location of flame 13.

[0021] Advantages

[0022] 1. Water-cooled pipe II2 forms an annular bluff body, and at the same time, a reflux zone is formed at the tail of the bluff body to stabilize the flame.

[0023] 2. The design of water-cooled pipe bank I10 and water-cooled pipe bank II12 plays a cooling role for sealing plate I3, sealing plate II4 and guide plate 8.

[0024] 3. The design of water-cooled tube bank I10 and water-cooled tube bank II12 can reduce the flame temperature, prevent backfire, reduce the generation of nitrogen oxides, and make the flame combustion more stable.

[0025] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A hydrogen-fueled gas-stabilizing combustion surface, characterized in that, include: The upper housing (9) and the lower housing (11) are connected by a water-cooled pipe bank I (10) and a water-cooled pipe bank II (12). The water-cooled pipe bank I (10) is located upstream of the water-cooled pipe bank II (12). The water-cooled pipe bank I (10) includes several water-cooled pipes I (1), and the water-cooled pipe bank II (12) includes several water-cooled pipes II (2). The water-cooled pipes I (1) have elongated holes, and several guide plates are fixedly connected inside the elongated holes. 8) A sealing plate I (3) and a sealing plate II (4) are fixedly connected between two adjacent water-cooled pipes I (1). The sealing plate I (3) is located upstream of the sealing plate II (4). A first gas channel (5) is formed between two adjacent guide plates (8). The water-cooled pipe row II (12) is located downstream of the first gas channel (5). A second gas channel (7) is formed between two adjacent water-cooled pipes II (2). A cavity (6) is formed downstream of the sealing plate II (4). Both the water-cooled pipe bank I (10) and the water-cooled pipe bank II (12) are located inside the furnace (14). A gradually expanding premixing box (15) is provided upstream of the water-cooled pipe bank I (10), and a flow equalization plate (16) is provided inside the gradually expanding premixing box (15).

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