Mixed burner

Abstract

The utility model provides a mixing burner, which relates to the technical field of burners, and comprises a disc arranged at the end part, an air pipeline is arranged on the right side of the disc, the air pipeline penetrates through the disc, a hydrogen cavity is arranged on the right side surface of the disc, and a hydrogen inlet pipe is fixedly communicated with the outer surface of the hydrogen cavity. According to the mixing burner, the hydrogen spraying holes are obliquely formed, so that when hydrogen is sprayed out through the hydrogen spraying holes to reach the left side of the disc, the hydrogen collides with ammonia, sprayed out of the ammonia spraying holes, in the circular temporary storage cavity, and then preliminary mixing is achieved; the primarily-mixed hydrogen-ammonia mixed gas is driven by air swirled through the swirling groove to enter the flow guide plate, is divided by the flow guide plate and is subjected to secondary rotary mixing in the arc-shaped groove of the flow guide plate, so that the gas is mixed more sufficiently, and the problem that the common burner is poor in gas mixing effect in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to a burner, in particular to a mixed burner, belonging to the technical field of burners. Background Art

[0002] Hydrogen and ammonia are both carbon-free fuels and are expected to become important energy sources to replace hydrocarbon fuels. However, the storage and transportation costs of hydrogen are high, and hydrogen burns quickly, which can easily ablate the end face of the burner. Therefore, it is not possible to build a large-scale pure hydrogen combustion system. The combustion speed of ammonia is slower than that of hydrogen, and the burner is not easily ablated. Therefore, pure ammonia combustion has the potential for large-scale application. However, pure ammonia combustion still has problems such as poor flame stability, low combustion speed, high NOx emissions, and high ignition temperature.

[0003] A burner multi-stage mixing combustion head disclosed in the Chinese patent application disclosure specification CN214536171U is provided with a mixing cavity and a built-in nozzle. The mixing cavity and the nozzle are designed separately. This design allows the gas inside the device to move relative to each other, so that the mixing effect of the device is better, thereby making the gas combustion more complete and more environmentally friendly, increasing the practicality of the device. The separate design of the device makes it more convenient to install and has a better effect when used, increasing the convenience of the device.

[0004] During use, the above patent can use the device by arranging the mixing cavity outside the built-in nozzle, so that the burning gas is ejected from the third through hole and the fourth through hole, and the gas to be mixed enters the mixing cavity from the connecting hole, thereby performing relative airflow impact, and finally ejects from the first through hole, so that the mixing is more complete. However, its mixing only relies on the mutual collision between the airflows, and the mixing effect is poor. At the same time, its sleeve is installed with the device body by a fixed connection, which makes it difficult to disassemble the sleeve and very inconvenient to replace. Utility Model Content

[0005] The utility model provides a mixing burner to solve the problem of poor gas mixing effect of the common burner in the prior art, and solves the problem of inconvenient installation and disassembly of the sleeve ring and the device body of the common burner.

[0006] The utility model is implemented through the following technical scheme: a mixing burner, comprising a disc arranged at an end, an air duct is arranged on the right side of the disc, the air duct runs through the disc, a hydrogen cavity is arranged on the right side of the disc, the outer surface of the hydrogen cavity is fixedly connected with a hydrogen inlet pipe, a plurality of hydrogen spray holes arranged in a circumferential manner are opened inside the disc, an ammonia cavity is arranged on the right side of the disc, the outer surface of the ammonia cavity is fixedly connected with an ammonia inlet pipe, a circular temporary storage cavity is fixed on the left side of the disc, ammonia spray holes are opened on the side of the circular temporary storage cavity, a guide sleeve is arranged on the left side of the disc, and a connecting device is arranged on the outer surface of the guide sleeve.

[0007] An air cavity is arranged on the right side of the disc, and an air inlet pipe is fixedly connected to the right side of the air cavity. A plurality of circumferentially arranged swirl grooves are opened on the side of the disc, and the air in the air cavity reaches the left side of the disc through the swirl grooves.

[0008] The connecting device comprises a slot plate, which is fixed to the air cavity. The connecting device also comprises a fixing block fixed to the guide sleeve. A slot block is fixed to the upper surface of each fixing block, and the slot block is clamped to the slot plate.

[0009] A groove is provided on the outer surface of each slot block, and a corresponding limit groove is provided on the outer surface of the slot plate. The inner wall of the groove is slidably connected to the limit block, and the limit block is clamped with the limit groove. A return spring is fixed to the bottom surface of each limit block, and the other end of the return spring is fixed to the groove. The elastic force of the return spring assists the clamping of the limit block and the limit groove.

[0010] The hydrogen spray holes are arranged obliquely and are directed toward the circular temporary storage cavity, so that when the hydrogen is sprayed through the hydrogen spray holes and reaches the left side of the disc, it collides with the ammonia sprayed from the ammonia spray holes inside the circular temporary storage cavity, thereby achieving preliminary mixing.

[0011] A plurality of guide plates arranged in a circle are fixed to the inner wall of the guide sleeve, and arc grooves are opened on the sides of the guide plates. The hydrogen-ammonia mixed gas that has been initially mixed enters the guide plates driven by the air swirling through the swirl grooves, is divided by the guide plates, and undergoes secondary rotation mixing in the arc grooves of the guide plates.

[0012] The left end of the air duct does not reach the end of the guide sleeve, the air pressure inside the air duct is greater than the air pressure of the air ejected through the swirl groove, and the mixed gas mixed by the secondary rotation of the guide plate is ejected from the port of the guide sleeve under the guidance of the air ejected from the air duct.

[0013] The utility model provides a mixed burner, which has the following beneficial effects:

[0014] 1. The mixing burner has hydrogen spray holes arranged obliquely, so that when hydrogen is sprayed out through the hydrogen spray holes and reaches the left side of the disc, it collides with ammonia sprayed from the ammonia spray holes in the circular temporary storage chamber, thereby achieving preliminary mixing. The hydrogen-ammonia mixed gas that has been initially mixed enters the guide plate driven by the air swirling through the swirl groove, is divided by the guide plate, and is subjected to secondary rotation mixing in the arc groove of the guide plate, so that the gas is mixed more fully, thereby solving the problem of poor gas mixing effect of the burner commonly seen in the prior art.

[0015] 2. The mixed burner is connected by setting a limit groove and a limit block. When it needs to be disassembled, the limit block is pressed, and the limit block returns to the groove and contacts and engages with the limit groove. The groove block can be detached from the groove plate at this time, completing the separation of the guide sleeve and the disc, solving the problem of inconvenient installation and disassembly of the common burner ring and the device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a side view of the air cavity of the utility model;

[0018] Figure 3 It is a cross-sectional view of the side view of the air duct of the utility model;

[0019] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure at center A;

[0020] Figure 5 It is a front view of the circular temporary storage chamber of the utility model;

[0021] Figure 6 It is a front view of the guide sleeve of the utility model.

[0022] Description of Reference Numerals

[0023] 1. Disc; 2. Air duct; 3. Hydrogen cavity; 4. Hydrogen inlet pipe; 5. Hydrogen spray hole; 6. Ammonia cavity; 7. Ammonia inlet pipe; 8. Circular temporary storage cavity; 9. Ammonia spray hole; 10. Guide sleeve; 11. Connecting device; 12. Air cavity; 13. Air inlet pipe; 14. Swirl groove;

[0024] 1101, slot plate; 1102, fixing block; 1103, slot block; 1104, limiting block; 1105, return spring;

[0025] 15. Guide plate. DETAILED DESCRIPTION

[0026] See also Figure 1 to Figure 6The utility model embodiment provides a mixing burner, including a disc 1 arranged at the end, an air duct 2 is arranged on the right side of the disc 1, the air duct 2 runs through the disc 1, a hydrogen cavity 3 is arranged on the right side of the disc 1, the outer surface of the hydrogen cavity 3 is fixedly connected with a hydrogen inlet pipe 4, a plurality of hydrogen spray holes 5 arranged in a circumferential pattern are opened inside the disc 1, an ammonia cavity 6 is arranged on the right side of the disc 1, the outer surface of the ammonia cavity 6 is fixedly connected with an ammonia inlet pipe 7, a circular temporary storage cavity 8 is fixed on the left side of the disc 1, and an ammonia spray hole 9 is opened on the side of the circular temporary storage cavity 8, a guide sleeve 10 is arranged on the left side of the disc 1, and a connecting device 11 is arranged on the outer surface of the guide sleeve 10.

[0027] Please refer to Figure 2 , Figure 3 and Figure 5 An air cavity 12 is provided on the right side of the disc 1, and an air inlet pipe 13 is fixedly connected to the right side of the air cavity 12. A plurality of swirl grooves 14 arranged in a circumference are provided on the side of the disc 1. The air inside the air cavity 12 reaches the left side of the disc 1 through the swirl grooves 14. The hydrogen spray holes 5 are arranged obliquely, and their direction is aligned with the circular temporary storage cavity 8, so that when the hydrogen is sprayed through the hydrogen spray holes 5 and reaches the left side of the disc 1, it collides with the ammonia sprayed from the ammonia spray holes 9 inside the circular temporary storage cavity 8, thereby achieving preliminary mixing.

[0028] Please refer to Figure 2 , Figure 3 and Figure 4 The connecting device 11 includes a slot plate 1101, which is fixed to the air cavity 12. The connecting device 11 also includes a fixed block 1102 fixed to the guide sleeve 10. A slot block 1103 is fixed to the upper surface of each fixed block 1102. The slot block 1103 is snap-fitted to the slot plate 1101. A groove is provided on the outer surface of each slot block 1103. A corresponding limiting groove is provided on the outer surface of the slot plate 1101. The inner wall of the groove is slidably connected to a limiting block 1104. The limiting block 1104 is snap-fitted to the limiting groove. A reset spring 1105 is fixed to the bottom surface of each limiting block 1104. The other end of the reset spring 1105 is fixed to the groove. The elastic force of the reset spring 1105 assists the limiting block 1104 in snapping with the limiting groove.

[0029] Please refer to Figure 3 , Figure 5 and Figure 6A plurality of guide plates 15 arranged in a circumference are fixed to the inner wall of the guide sleeve 10, and an arc groove is opened on the side of the guide plate 15. The hydrogen-ammonia mixed gas that has been initially mixed enters the guide plate 15 driven by the air swirling through the swirl groove 14, is divided by the guide plate 15, and undergoes secondary rotation mixing in the arc groove of the guide plate 15. The left end of the air duct 2 does not reach the end of the guide sleeve 10, and the air pressure inside the air duct 2 is greater than the air pressure of the air ejected through the swirl groove 14. The mixed gas that has undergone secondary rotation mixing through the guide plate 15 is ejected from the port of the guide sleeve 10 under the guidance of the air ejected from the air duct 2.

[0030] Working principle: During use, air is passed into the air duct 2 and the air intake pipe 13 through the external air pipe respectively, and hydrogen and ammonia are passed into the hydrogen cavity 3 and the ammonia cavity 6 through the hydrogen intake pipe 4 and the ammonia intake pipe 7 respectively, and the ammonia enters the circular temporary storage cavity 8 and is sprayed out through the ammonia spray hole 9. By arranging the hydrogen spray hole 5 obliquely, when the hydrogen is sprayed through the hydrogen spray hole 5 and reaches the left side of the disc 1, it collides with the ammonia sprayed from the ammonia spray hole 9 inside the circular temporary storage cavity 8, thereby achieving preliminary mixing.

[0031] At the same time, the air enters the guide plate 15 after swirl through the swirl groove 14. At the same time, the swirling air drives the hydrogen-ammonia mixed gas to move together, and is divided by the guide plate 15 and subjected to secondary rotation mixing in the arc groove of the guide plate 15, so that the gas is mixed more fully, solving the problem of poor burner gas mixing effect commonly seen in the prior art.

[0032] When disassembly is required, the limit block 1104 is pressed down, and the limit block 1104 returns to the groove and contacts and engages with the limit groove. The groove block 1103 can now be detached from the groove plate 1101, completing the separation of the guide sleeve 10 and the disc 1, solving the problem of inconvenient installation and disassembly of the common burner ring and the device body.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mixing burner, comprising a disc (1) arranged at an end, characterized in that: An air duct (2) is arranged on the right side of the disc (1), the air duct (2) runs through the disc (1), a hydrogen cavity (3) is arranged on the right side of the disc (1), the outer surface of the hydrogen cavity (3) is fixedly connected to a hydrogen inlet pipe (4), a plurality of hydrogen spray holes (5) arranged in a circumferential pattern are opened inside the disc (1), an ammonia cavity (6) is arranged on the right side of the disc (1), and the outer surface of the ammonia cavity (6) is fixedly connected to an ammonia inlet pipe (7); A circular temporary storage cavity (8) is fixed on the left side of the disc (1), an ammonia spray hole (9) is opened on the side of the circular temporary storage cavity (8), a flow guide sleeve (10) is arranged on the left side of the disc (1), and a connecting device (11) is arranged on the outer surface of the flow guide sleeve (10).

2. A mixing burner according to claim 1, characterized in that: An air cavity (12) is provided on the right side of the disc (1), the right side of the air cavity (12) is fixedly connected to an air intake pipe (13), and a plurality of swirl grooves (14) arranged in a circumferential pattern are provided on the side of the disc (1).

3. A mixing burner according to claim 1, characterized in that: The connecting device (11) comprises a slot plate (1101), wherein the slot plate (1101) is fixed to the air cavity (12), and the connecting device (11) further comprises a fixing block (1102) fixed to the guide sleeve (10), and a slot block (1103) is fixed to the upper surface of each fixing block (1102), and the slot block (1103) is snap-connected to the slot plate (1101).

4. A mixing burner according to claim 3, characterized in that: The outer surface of each slot block (1103) is provided with a groove, and the outer surface of the slot plate (1101) is provided with a corresponding limit groove, the inner wall of the groove is slidably connected to the limit block (1104), the limit block (1104) is snap-fitted with the limit groove, and the bottom surface of each limit block (1104) is fixed with a return spring (1105), and the other end of the return spring (1105) is fixed to the groove.

5. A mixing burner according to claim 1, characterized in that: The hydrogen spray holes (5) are arranged obliquely, and their directions are aligned with the circular temporary storage cavity (8).

6. A mixing burner according to claim 1, characterized in that: A plurality of guide plates (15) arranged in a circumferential pattern are fixed to the inner wall of the guide sleeve (10), and arc-shaped grooves are provided on the sides of the guide plates (15).

7. A mixing burner according to claim 1, characterized in that: The left end of the air duct (2) does not reach the end of the guide sleeve (10), and the air pressure inside the air duct (2) is greater than the air pressure of the air ejected through the swirl groove (14).

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