Dual channel plasma ignition burner

Abstract

The application discloses a double-channel plasma ignition burner, which comprises an outer cylinder, an ignition cylinder sleeved in the outer cylinder and a plasma generator, the ignition end of the plasma generator is inserted into the ignition cylinder, a main chamber and a shunt chamber are arranged in the outer cylinder, the main chamber and the shunt chamber are arranged by a partition plate, the main chamber and the shunt chamber are arranged along the axis of the outer cylinder, the ignition cylinder is arranged in the main chamber, and an adjusting plate for controlling air inlet of the shunt chamber is arranged on the surface of the partition plate close to the shunt chamber. The double-channel plasma ignition burner can meet the ignition air velocity requirement of low-volatile lean coal and high-moisture lignite, and can avoid coking of the ignition cylinder.

Description

Technical Field

[0001] This invention relates to the field of pulverized coal combustion technology, and in particular to a dual-channel plasma ignition burner. Background Technology

[0002] Coal-fired power generation is currently the main power generation method used by various countries. Ignition is a key aspect of the boiler combustion process. To replace oil ignition, which consumes large amounts of fuel oil, plasma ignition technology has been developed in recent years.

[0003] For low-volatile lean coal and high-moisture lignite, ignition using plasma ignition burners presents significant challenges. The main influencing factors for plasma ignition burner ignition are: ignition power, pulverized coal concentration, and primary air velocity in the ignition zone. Ignition power cannot be increased indefinitely, and while pulverized coal concentration can be adjusted to an optimal level, the primary air velocity in the ignition zone of existing plasma ignition burners cannot be adjusted according to actual operating conditions. This is especially true when using low-volatile lean coal and high-moisture lignite as fuel. High air velocity in the pulverized coal-containing airflow can negatively impact plasma ignition, while low air velocity can lead to coking in the ignition tube. Summary of the Invention

[0004] In view of this, the present invention provides a dual-channel plasma ignition burner that can meet the ignition wind speed requirements of low-volatile lean coal and high-moisture lignite, while avoiding coking in the ignition tube.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A dual-channel plasma ignition burner includes an outer cylinder, an ignition tube fitted inside the outer cylinder, and a plasma generator. The ignition end of the plasma generator is inserted into the ignition tube. The outer cylinder is provided with a main chamber and a diversion chamber, which are separated by a partition plate. Both the main chamber and the diversion chamber extend along the axis of the outer cylinder. The ignition tube is located inside the main chamber. An adjustment plate for controlling the air intake of the diversion chamber is provided on the surface of the partition plate near the diversion chamber.

[0007] Optionally, the adjusting plate is positioned near the air inlet end of the partition plate;

[0008] In the first state, the regulating plate is in contact with the partition plate, and the diversion chamber is opened to allow airflow.

[0009] In the second state, one end of the regulating plate is connected to the partition plate, and the other end is attached to the inner wall of the outer cylinder, thus closing the diversion chamber.

[0010] Optionally, the air inlet end of the outer cylinder is connected to the elbow, the diversion chamber is located on the inner side near the elbow, and the main chamber is located on the outer side near the elbow.

[0011] Optionally, the outer cylinder includes an expanding section, a constant section, and a reducing section connected together. The small end of the expanding section is connected to the elbow, the large end of the expanding section is connected to one end of the constant section, and the other end of the constant section is connected to the large end of the reducing section.

[0012] The separators are placed in the expanded diameter section and the constant diameter section.

[0013] Optionally, the ignition tube is disposed in the inner cavity of the equal diameter section. The ignition tube includes several sub-tubes with progressively increasing diameters. The diameter of the sub-tube near the air inlet end of the equal diameter section is smaller than the diameter of the sub-tube away from the air inlet end of the equal diameter section.

[0014] The ignition end of the plasma generator is inserted into the sub-tube near the air inlet end of the equal-diameter section of the ignition tube.

[0015] Optionally, a flow guide block for guiding flow is provided on the inner wall of the main chamber. The length of the flow guide block extends along the circumference of the main chamber. The flow guide block is located on the inner wall of the main chamber away from the partition plate and is located at the front end of the branch cylinder near the diameter reduction section.

[0016] Optionally, the distance between the inner wall of the outer cylinder and the inner cylinder near the narrowing section is greater than the height of the guide block;

[0017] The cross-section of the guide block is a V-shaped structure. The V-shaped structure includes a first inclined plate and a second inclined plate that are connected at the top and separated at the bottom. The angle between the first inclined plate and the inner wall of the main chamber is the first angle, and the angle between the second inclined plate and the inner wall of the main chamber is the second angle. The first angle and the second angle may be the same or different.

[0018] The included angle between the two end faces of the guide block is 120°-180°.

[0019] Optionally, one end of the adjusting plate is rotatably connected to a groove on the partition plate via a rotating shaft, and the other end rotates with the rotating shaft. The angle between the adjusting plate and the partition plate is the third angle.

[0020] In the first state, the third included angle is 0°; in the second state, the third included angle is an acute angle.

[0021] Optionally, one end of the rotating shaft is rotatably connected to the protruding shell on the outer cylinder, and the other end extends out of the outer cylinder and is connected to the drive mechanism. A sealing structure is provided at the connection position between the end of the rotating shaft extending out of the outer cylinder and the outer cylinder.

[0022] The drive mechanism includes a wrench fixedly connected to the end of the shaft.

[0023] Optionally, the sealing structure includes an inner support sleeve and an outer support sleeve fitted on the rotating shaft. The inner support sleeve is located close to the rotating shaft, and the outer support sleeve is fitted outside the inner support sleeve. The length of the outer support sleeve is greater than the length of the inner support sleeve. The inner support sleeve is located at the end of the outer support sleeve close to the outer cylinder. The cavity between the outer support sleeve and the rotating shaft is provided with sealing filler and a sealing pressure sleeve for pressing the sealing filler. The sealing filler is located between the sealing pressure sleeve and the inner support sleeve. The sealing pressure sleeve is threaded to the inner wall of the outer support sleeve.

[0024] Optionally, a first ceramic plate is fixedly connected to the windward surface of the regulating plate, a second ceramic plate is provided on the windward side of the rotating shaft, a third ceramic plate is provided on the surface of the partition plate located in the diversion chamber, and a fourth ceramic plate is provided on the inner side of the outer cylinder.

[0025] Optionally, the ignition tube includes a first-stage distribution tube, a second-stage distribution tube, and a third-stage distribution tube arranged sequentially, wherein the diameter of the first-stage distribution tube is smaller than the diameter of the second-stage distribution tube, and the diameter of the second-stage distribution tube is smaller than the diameter of the third-stage distribution tube.

[0026] The end of the first-stage separator is inserted into the beginning of the second-stage separator, the end of the second-stage separator is inserted into the beginning of the third-stage separator, and the ignition end of the plasma generator is inserted into the beginning of the first-stage separator.

[0027] As can be seen from the above technical solution, the dual-channel plasma ignition burner provided by this invention divides the inner cavity of the outer cylinder into a main chamber and a diversion chamber by a partition plate. The ignition tube is located in the main chamber. The opening and closing of the air inlet of the diversion chamber is controlled by an adjusting plate. When the adjusting plate is open, airflow passes through the diversion chamber, thereby diverting the airflow from the air inlet and reducing the airflow entering the main chamber. This reduces the wind speed in the ignition zone of the main chamber, ensuring that the wind speed in the ignition zone meets the ignition conditions for low-volatile lean coal and high-moisture lignite. When the ignition tube experiences overheating and coking, requiring an increase in wind speed, the opening of the adjusting plate controls the airflow entering the diversion chamber, thereby adjusting the wind speed entering the main chamber and improving the overheating and coking phenomena. The dual-channel plasma ignition burner of this invention allows the primary wind speed in the ignition zone to be adjusted according to actual working conditions, meeting the ignition wind speed requirements for low-volatile lean coal and high-moisture lignite while preventing coking in the ignition tube. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a dual-channel plasma ignition burner (with part of the cylinder removed) provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the outer cylinder provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the flow guide block provided in an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the installation position of the adjustment plate provided in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the mounting position of the rotating shaft provided in an embodiment of the present invention;

[0034] Figure 6 for Figure 5 A partially enlarged structural diagram of part I in the diagram;

[0035] Figure 7 A cross-sectional view of the ignition tube location provided in an embodiment of the present invention;

[0036] Figure 8 for Figure 7 A schematic diagram of the structure along direction A.

[0037] in:

[0038] 1. Outer cylinder; 101. Reducing diameter section; 102. Equal diameter section; 103. Expanding diameter section; 104. Fourth ceramic plate; 105. Protruding seat; 2. Third-stage dividing cylinder; 3. Guide block; 301. First inclined plate; 302. Second inclined plate; 4. Second-stage dividing cylinder; 5. First-stage dividing cylinder; 6. Plasma generator; 7. Elbow; 8. Adjusting plate; 801. Main body; 802. First ceramic plate; 803. Flexible block; 9. Dividing plate; 10. Rotating shaft; 11. Second ceramic plate; 12. Wrench; 13. Sealing sleeve; 14. Outer support sleeve; 15. Sealing packing; 16. Inner support sleeve; 17. Connecting screw; 18. Third support rib; 19. Second support rib; 20. First support rib; 21. Third ceramic plate. Detailed Implementation

[0039] This invention discloses a dual-channel plasma ignition burner that can meet the ignition wind speed requirements of low-volatile lean coal and high-moisture lignite, while avoiding coking in the ignition tube.

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1 to 8 The dual-channel plasma ignition burner of the present invention includes an outer cylinder 1, an ignition tube sleeved inside the outer cylinder 1, and a plasma generator 6, with the ignition end of the plasma generator 6 inserted into the ignition tube. The outer cylinder 1 is provided with a main chamber and a branch chamber, which are separated by a partition plate 9. Both the main chamber and the branch chamber extend along the axis of the outer cylinder 1, and the partition plate 9 extends along the extending direction of the outer cylinder 1. The ignition tube is disposed within the main chamber, and an adjustment plate 8 for controlling the air intake of the branch chamber is provided on the surface of the partition plate 9 near the branch chamber.

[0042] The partition plate 9 is positioned with one end near the air inlet of the main chamber and the branch chamber, and the other end near the air outlet of the ignition tube. The main chamber and the branch chamber are arranged in parallel. The cross-sectional area of ​​the main chamber is larger than that of the branch chamber, meaning the main chamber is larger than the branch chamber. The plasma generator 6 is externally fitted with a wear-resistant ceramic sleeve.

[0043] The dual-channel plasma ignition burner of this invention has an outer cylinder 1 whose inner cavity is divided into a main chamber and a diversion chamber by a partition plate 9. The ignition tube is located in the main chamber. The opening and closing of the air inlet of the diversion chamber is controlled by an adjusting plate 8. When the adjusting plate 8 is open, airflow passes through the diversion chamber, thereby diverting the airflow from the air inlet and reducing the airflow entering the main chamber. This reduces the wind speed in the ignition zone of the main chamber, ensuring that the wind speed in the ignition zone meets the ignition conditions for low-volatile lean coal and high-moisture lignite. When the ignition tube experiences overheating and coking, requiring an increase in wind speed, the opening of the adjusting plate 8 is used to control the airflow entering the diversion chamber, thereby adjusting the wind speed entering the main chamber and improving the overheating and coking phenomena. The dual-channel plasma ignition burner of this invention allows the primary wind speed in the ignition zone to be adjusted according to actual operating conditions, meeting the ignition wind speed requirements for low-volatile lean coal and high-moisture lignite while preventing coking in the ignition tube.

[0044] The regulating plate 8 is positioned near the air inlet of the partition plate 9 to facilitate control of the airflow entering the diversion chamber. In the first state, the regulating plate 8 is in contact with the partition plate 9, and the diversion chamber is open to allow airflow. In the second state, one end of the regulating plate 8 is connected to the partition plate 9, and the other end is in contact with the inner wall of the outer cylinder, closing the diversion chamber. In the first state, the diversion chamber is open, resulting in a smaller airflow in the main chamber and a lower wind speed to meet ignition requirements. In the second state, the diversion chamber is closed, resulting in a larger airflow in the main chamber and a higher wind speed to prevent coking in the ignition tube.

[0045] Specifically, the air inlet of the outer cylinder 1 is connected to the elbow 7. The diversion chamber is located near the inner side of the elbow 7, and the main chamber is located near the outer side of the elbow 7. Here, "inner side" refers to the small diameter side of the elbow 7, and "outer side" refers to the large diameter side of the elbow 7. The elbow 7 is a pulverized coal conveying pipeline.

[0046] To facilitate connection with adjacent components, the outer cylinder 1 includes an expanded diameter section 103, a constant diameter section 102, and a reduced diameter section 101 connected together, such as... Figure 2 As shown, the smaller end of the expanding section 103 connects to the elbow 7, the larger end of the expanding section 103 connects to one end of the equal-diameter section 102, and the other end of the equal-diameter section 102 connects to the larger end of the narrowing section 101. A partition plate 9 is disposed within the expanding section 103 and the equal-diameter section 102. The cross-sectional area of ​​the equal-diameter section 102 is 1 to 3 times the cross-sectional area of ​​the elbow 7's inlet. By setting the equal-diameter section 102, the central space of the outer cylinder 1 is made larger, reducing the wind speed in this section.

[0047] In one embodiment, an ignition tube is disposed within the inner cavity of the equal-diameter section 102. The ignition tube includes several sub-tubes with progressively increasing diameters, all coaxially arranged. The diameter of the sub-tube closest to the air inlet of the equal-diameter section 102 is smaller than the diameter of the sub-tube furthest from the air inlet of the equal-diameter section. The ignition end of the plasma generator 6 is inserted into the sub-tube closest to the air inlet of the equal-diameter section 102 for ignition. The sub-tubes are connected to the inner wall of the outer cylinder 1 via a support structure.

[0048] Because elbow 7 is a bent arc-shaped pipe structure, the amount of pulverized coal in the outer cylinder 1 is relatively large due to centrifugal force. To reduce the scouring of the side wall of the subsequent narrowing section 101 by the pulverized coal in this space, a flow guide block 3 is provided on the inner wall of the main chamber. The length of the flow guide block 3 extends circumferentially along the main chamber. The flow guide block 3 is located on the inner wall of the main chamber away from the partition plate 9, that is, on the wall near the outer side of elbow 7. The flow guide block 3 is located at the front end of the branch cylinder near the narrowing section 101. Figure 1 As shown, this facilitates the introduction of most of the pulverized coal from the outer ring of the outer cylinder 1 into the final distribution cylinder, reducing the scouring of the narrowed section 101 of the outer cylinder 1. The front end of the distribution cylinder refers to its air inlet.

[0049] In one embodiment, the distance M between the inner wall of the outer cylinder 1 and the constricted section 101 is greater than the height H of the guide block 8, and the distance L between the highest point of the guide block 3 and the last stage constricted cylinder ranges from 50 to 300 mm. Specifically, the cross-section of the guide block 3 is a V-shaped structure, which includes a first inclined plate 301 and a second inclined plate 302, which are connected at the top and separated at the bottom, as shown below. Figure 3 As shown, Figure 3 The arrows indicate the direction of pulverized coal flow. The second inclined plate 302 is positioned near the inlet of the outer cylinder 1. The angle between the first inclined plate 301 and the inner wall of the main chamber is the first included angle β, and the angle between the second inclined plate 302 and the inner wall of the main chamber is the second included angle γ. The first included angle β and the second included angle γ may be the same or different, with β ≤ 60° and γ < 90°. The included angle between the two end faces of the guide block 3 is 120°-180°.

[0050] Furthermore, one end of the adjusting plate 8 is rotatably connected to a groove on the partition plate 9 via a rotating shaft 10, and the other end rotates with the rotating shaft 10. The adjusting plate 8 is fixedly connected to the rotating shaft 10, which is rotatably connected to the outer cylinder 1. The rotating shaft 10 passes through the groove on the partition plate 9. The angle between the adjusting plate 8 and the partition plate 9 is a third angle α. When the adjusting plate 8 is fully open, the third angle α is 0°; when the adjusting plate 8 is closed, the third angle α is an acute angle less than 90°. Figure 1 and Figure 4 As shown.

[0051] To facilitate the rotation of the rotating shaft 10, one end of the shaft 10 is rotatably connected to a protrusion 104 on the outer cylinder 1, and the other end extends out of the outer cylinder 1 and is connected to the drive mechanism. A sealing structure is provided at the connection point between the end of the shaft 10 extending out of the outer cylinder 1 and the outer cylinder 1. The drive mechanism includes a wrench 12 fixedly connected to the end of the rotating shaft 10. The wrench 12 is fixedly connected to the rotating shaft 10 by connecting screws 17. Figure 5 and Figure 6 As shown. Connecting screw 17 connects the rotating wrench 12 to the rotating shaft 10, and the rotating shaft 10 is connected to the adjusting plate 8, ensuring that the rotation angles of the wrench 12, rotating shaft 10, and adjusting plate 8 are consistent. The wrench 12 can be manually adjusted, or it can be connected to a motor to achieve remote electric adjustment.

[0052] Specifically, the sealing structure includes an inner support sleeve 16 and an outer support sleeve 14 sleeved on the rotating shaft 10. The inner support sleeve 16 is located close to the rotating shaft 10, and the outer support sleeve 14 is sleeved on the outside of the inner support sleeve 16. The length of the outer support sleeve 14 is greater than the length of the inner support sleeve 16. The inner support sleeve 16 is located at the end of the outer support sleeve 14 closest to the outer cylinder 1. A sealing filler 15 and a sealing pressure sleeve 13 for pressing the sealing filler 15 are provided in the cavity between the outer support sleeve 14 and the rotating shaft 10. The sealing filler 15 is located between the sealing pressure sleeve 13 and the inner support sleeve 16. The sealing pressure sleeve 13 is threaded to the inner wall of the outer support sleeve 14. One end of the inner support sleeve 16 is fixed to the inner wall of the outer cylinder 1, and the other end extends out of the outer cylinder 1. The outer support sleeve 14 is fixedly connected to the outer surface of the outer cylinder 1. This fixed connection can be welded.

[0053] To extend its service life, the adjustment plate 8 includes a main body 801, as shown in the reference. Figure 4 A first ceramic plate 802 is fixedly connected to the windward surface of the main body 801, and a second ceramic plate 11 is provided on the windward side of the rotating shaft 10. The second ceramic plate 11 is used to prevent the rotating shaft 10 from being damaged by friction from the coal dust airflow. The first ceramic plate 802 covers the main body 801, extending the service life of the main body 801. A flexible block 803 is provided at the windward end of the main body 801 that contacts the inner wall of the outer cylinder 1, thereby preventing damage caused by direct collision between the first ceramic plate 802 and the inner wall of the outer cylinder 1, and extending the service life of the first ceramic plate 802. A third ceramic plate 21 is provided on the surface of the partition plate 9 located in the diversion chamber, and a fourth ceramic plate 104 is provided on the inner side of the outer cylinder 1, in order to extend the service life of the partition plate 9 and the outer cylinder 1.

[0054] In one embodiment, the ignition tube includes a first-stage branch tube 5, a second-stage branch tube 4, and a third-stage branch tube 2 arranged sequentially. The diameter of the first-stage branch tube 5 is smaller than the diameter of the second-stage branch tube 4, and the diameter of the second-stage branch tube 4 is smaller than the diameter of the third-stage branch tube 2. Figure 7 and Figure 8 As shown, the end of the first-stage tube 5 is inserted into the beginning of the second-stage tube 4, the end of the second-stage tube 4 is inserted into the beginning of the third-stage tube 2, and the ignition end of the plasma generator 6 is inserted into the beginning of the first-stage tube 5. A guide block 3 is positioned at the front end of the third-stage tube 2. The first-stage tube 5 is connected to the inner wall of the outer tube 1 via a first supporting rib 20, the second-stage tube 4 is connected to the inner wall of the outer tube 1 via a second supporting rib 19, and the third-stage tube 2 is connected to the inner wall of the outer tube 1 via a third supporting rib 18.

[0055] The dual-channel plasma ignition burner of the present invention, when burning low-volatile lean coal and high-moisture lignite, can reduce the primary air velocity to the maximum extent and improve the ignition capability by opening the regulating plate 8 while ensuring that no dust accumulates in the ignition zone. When the ignition tube experiences overheating and coking, and it is necessary to increase the air velocity, the opening of the lower regulating plate 8 can be adjusted.

[0056] In the description of this solution, it should be understood that the terms "upper", "lower", "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 the present invention and simplifying the description, 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 solution.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-channel plasma ignition burner, comprising an outer cylinder, an ignition tube sleeved within the outer cylinder, and a plasma generator, wherein the ignition end of the plasma generator is inserted into the ignition tube, characterized in that, The outer cylinder is provided with a main chamber and a diversion chamber. The main chamber and the diversion chamber are separated by a partition plate. Both the main chamber and the diversion chamber extend along the axis of the outer cylinder. The ignition tube is located in the main chamber. An adjustment plate for controlling the air intake of the diversion chamber is provided on the surface of the partition plate near the diversion chamber. The air inlet end of the outer cylinder is connected to the elbow. The outer cylinder includes an expanded diameter section, an equal diameter section and a reduced diameter section connected together. The small end of the expanded diameter section is connected to the elbow. The large end of the expanded diameter section is connected to one end of the equal diameter section. The other end of the equal diameter section is connected to the large end of the reduced diameter section. The ignition tube is located in the inner cavity of the equal diameter section. The ignition tube includes several sub-tubes with progressively increasing diameters. The diameter of the sub-tube near the air inlet of the equal diameter section is smaller than the diameter of the sub-tube away from the air inlet of the equal diameter section. The inner wall of the main chamber is provided with a flow guide block for guiding the flow. The flow guide block is located on the inner wall of the main chamber away from the partition plate and is located at the front end of the branch cylinder near the narrowing section.

2. The dual-channel plasma ignition burner according to claim 1, characterized in that, The regulating plate is positioned near the air inlet end of the partition plate; In the first state, the regulating plate is in contact with the partition plate, and the diversion chamber is opened to allow airflow. In the second state, one end of the regulating plate is connected to the partition plate, and the other end is attached to the inner wall of the outer cylinder, thus closing the diversion chamber.

3. The dual-channel plasma ignition burner according to claim 1, characterized in that, The diversion chamber is located on the inner side near the bend, and the main chamber is located on the outer side near the bend.

4. The dual-channel plasma ignition burner according to claim 3, characterized in that, The separators are placed in the expanded diameter section and the constant diameter section.

5. The dual-channel plasma ignition burner according to claim 4, characterized in that, The ignition end of the plasma generator is inserted into the sub-tube near the air inlet end of the equal-diameter section of the ignition tube.

6. The dual-channel plasma ignition burner according to claim 5, characterized in that, The length of the guide block extends circumferentially along the main chamber.

7. The dual-channel plasma ignition burner according to claim 6, characterized in that, The distance between the inner wall of the outer cylinder and the inner wall of the inner cylinder near the narrowing section is greater than the height of the guide block; The cross-section of the guide block is a V-shaped structure. The V-shaped structure includes a first inclined plate and a second inclined plate that are connected at the top and separated at the bottom. The angle between the first inclined plate and the inner wall of the main chamber is the first angle, and the angle between the second inclined plate and the inner wall of the main chamber is the second angle. The first angle and the second angle may be the same or different. The included angle between the two end faces of the guide block is 120°-180°.

8. The dual-channel plasma ignition burner according to claim 2, characterized in that, One end of the adjusting plate is rotatably connected to the groove on the partition plate via a rotating shaft, and the other end rotates with the rotating shaft. The angle between the adjusting plate and the partition plate is the third angle. In the first state, the third included angle is 0°; in the second state, the third included angle is an acute angle.

9. The dual-channel plasma ignition burner according to claim 8, characterized in that, One end of the rotating shaft is rotatably connected to the protruding shell on the outer cylinder, and the other end extends out of the outer cylinder and is connected to the drive mechanism. A sealing structure is provided at the connection position between the end of the rotating shaft extending out of the outer cylinder and the outer cylinder. The drive mechanism includes a wrench fixedly connected to the end of the shaft.

10. The dual-channel plasma ignition burner according to claim 9, characterized in that, The sealing structure includes an inner support sleeve and an outer support sleeve fitted on the rotating shaft. The inner support sleeve is located close to the rotating shaft, and the outer support sleeve is fitted outside the inner support sleeve. The length of the outer support sleeve is greater than the length of the inner support sleeve. The inner support sleeve is located at the end of the outer support sleeve that is close to the outer cylinder. The cavity between the outer support sleeve and the rotating shaft is provided with sealing filler and a sealing pressure sleeve for pressing the sealing filler. The sealing filler is located between the sealing pressure sleeve and the inner support sleeve. The sealing pressure sleeve is threaded to the inner wall of the outer support sleeve.

11. The dual-channel plasma ignition burner according to claim 8, characterized in that, A first ceramic plate is fixedly connected to the windward surface of the regulating plate, a second ceramic plate is provided on the windward side of the rotating shaft, a third ceramic plate is provided on the surface of the partition plate located in the diversion chamber, and a fourth ceramic plate is provided on the inner side of the outer cylinder.

12. The dual-channel plasma ignition burner according to claim 1, characterized in that, The ignition tube includes a first-stage distribution tube, a second-stage distribution tube, and a third-stage distribution tube arranged in sequence. The diameter of the first-stage distribution tube is smaller than that of the second-stage distribution tube, and the diameter of the second-stage distribution tube is smaller than that of the third-stage distribution tube. The end of the first-stage separator is inserted into the beginning of the second-stage separator, the end of the second-stage separator is inserted into the beginning of the third-stage separator, and the ignition end of the plasma generator is inserted into the beginning of the first-stage separator.

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