A deflectable wall-fired tangentially fired boiler burner and method of operation

Abstract

The present application belongs to the field of burners, and discloses a deflectable wall-type tangential circle boiler burner and a working method. The deflection assembly adopts a transmission mode of servo motors, screw rods and solid rods, which can realize accurate angle adjustment. This makes the burner nozzle able to adjust the direction in real time according to the needs, and optimizes the distribution of combustion gas flow in the furnace. Especially under the conditions of boiler load change or different fuels, this flexible adjustment capability helps to improve the combustion efficiency. By accurately adjusting the deflection angle of the nozzle, the present application can make the combustion gas flow evenly distributed in the furnace, reducing the phenomenon of incomplete combustion. The direction of the burner nozzle can be dynamically adjusted according to different working conditions, so as to better adapt to the needs of different loads and different fuels, and finally improve the overall combustion efficiency of the boiler. The adjustable deflection angle of the present application makes the burner nozzle able to adjust according to the distribution of the temperature in the furnace, effectively avoiding the areas with excessively high or low temperature.

Description

Technical Field

[0001] This invention belongs to the field of burners, specifically relating to a deflectable wall-mounted tangential boiler burner and its operating method. Background Technology

[0002] A wall-mounted tangential-circle boiler is a type of pulverized coal boiler, typically used in supercritical or ultra-supercritical units. Its design features burners arranged on the four walls of the furnace, optimizing the pulverized coal combustion process through tangential combustion. Tangential combustion effectively improves combustion efficiency, reduces harmful gas emissions, and contributes to a more uniform airflow distribution within the furnace. Each burner layer typically corresponds to a coal mill, which precisely injects pulverized coal, resulting in a more uniform mixture of fuel and air, thereby improving the boiler's thermal efficiency. During efficient and stable combustion, the temperature distribution within the furnace is effectively controlled, avoiding excessively high or low temperature areas, thus enhancing the boiler's operational stability.

[0003] In wall-mounted tangential boilers, the design and arrangement of the burners are crucial. Multiple burners are typically used in parallel to ensure uniform airflow and temperature within the furnace. The position and direction of the burner nozzles significantly impact combustion efficiency; therefore, the use of a deflection mechanism is essential. This mechanism primarily adjusts the angle of the burner nozzles, altering the direction of the mixed airflow of pulverized coal and air, thereby improving airflow distribution within the furnace and preventing dead zones and uneven temperature distribution. Through this adjustment, the burner can flexibly adapt to different operating conditions, improving combustion efficiency and the boiler's thermal performance.

[0004] However, the deflection mechanisms used in many wall-mounted tangential boilers currently have certain limitations in actual operation. Typically, the position and angle of these deflection mechanisms are fixed, making it impossible to adjust them in real time according to the combustion conditions within the furnace. If the deflection mechanism's setting fails to meet actual requirements, it often affects combustion stability and efficiency. For example, when the boiler load changes, the airflow distribution within the furnace may become uneven. If the deflection mechanism cannot adjust in time, it may lead to localized excessively fast or slow combustion, thus affecting the overall combustion and thermal efficiency of the boiler. Because the position adjustment of the deflection mechanism in existing technologies is difficult and cannot flexibly respond to changing operating conditions, the boiler's adjustment capabilities are somewhat limited. Summary of the Invention

[0005] The purpose of this invention is to overcome the insufficiency of the difficulty in changing the position of the deflection mechanism according to actual needs, and to provide a deflectable wall-mounted tangential boiler burner and its working method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a deflectable wall-mounted tangential boiler burner, comprising a plurality of burner nozzles, the plurality of burner nozzles being respectively disposed on the four walls of the furnace, and the burner nozzles being connected to a deflection assembly.

[0008] The deflection assembly includes a servo motor, which is connected to a screw. A solid rod is fitted around the screw, and a threaded groove that matches the screw thread is opened inside the solid rod. The solid rod is connected to the burner nozzle.

[0009] A further improvement of the present invention is that the output shaft of the servo motor is connected to a first flexible shaft, the first flexible shaft has a square hole, a second flexible shaft is slidably connected in the square hole, and the second flexible shaft is connected to a screw.

[0010] A further improvement of the present invention is that the screw is rotatably connected to the first fixed plate via a bearing.

[0011] A further improvement of the present invention is that the output shaft of the servo motor is connected to the first flexible shaft via a first connecting component;

[0012] The first connecting assembly includes a second connecting plate. The output shaft of the servo motor is fixedly mounted on the second connecting plate. A second square plate is fixed to the bottom of the first flexible shaft 32. A second groove is provided on the second square plate. A second protrusion is fixed on one side of the second connecting plate and inserted into the second groove. A storage groove is provided on the second square plate and is connected to the second groove. A second fixing plate is provided in the storage groove. A slide rod is slidably connected to the second fixing plate. Limit grooves are provided at both ends of the second protrusion. One end of the slide rod is inserted into the limit groove. A drive plate is fixed to the other end of the slide rod. A spring is sleeved on the slide rod. The two ends of the spring are fixedly connected to the drive plate and the second fixing plate, respectively.

[0013] A further improvement of the present invention is that a movable plate is provided on one side of the drive plate, and fixed blocks are fixedly installed at both ends of one side of the second square plate. The fixed blocks are threaded with studs, and one end of the studs is rotatably connected to the movable plate through a bearing. A second telescopic rod is fixedly installed at the opposite ends of the two sets of studs, and round rods are fixedly installed at both ends of the second telescopic rod.

[0014] A further improvement of the present invention is that the second flexible shaft is connected to the screw via a second connecting assembly;

[0015] The second connecting assembly includes a first connecting plate, which is disposed on one end of a screw. A first square plate is disposed on one end of a second flexible shaft. A first groove is formed on the first square plate. A first protrusion is disposed on one side of the first connecting plate and is inserted into the first groove. Two sets of side plates are fixedly installed on both ends of the first square plate. A rotating shaft is rotatably connected to the side plate through a bearing. A movable rod is disposed between the two sets of rotating shafts. A torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring are fixedly connected to the movable rod and the side plate, respectively. A first telescopic rod is disposed on one end of the movable rod, and a support plate is disposed on one end of the first telescopic rod.

[0016] A further improvement of the present invention is that a positioning rod is rotatably connected to one side of the support plate, the positioning rod is slidably connected to the side wall of the first square plate, and positioning grooves are provided at both ends of the first protrusion, with one end of the positioning rod inserted into the positioning groove.

[0017] Secondly, the present invention provides a method for operating a deflectable wall-mounted tangential boiler burner, comprising the following steps:

[0018] The servo motor starts after receiving a command from the control system;

[0019] The servo motor drives the screw to rotate along its axis.

[0020] When the screw rotates, the solid rod sleeved on the screw will move linearly along the axis of the screw;

[0021] The linear displacement of the solid rod directly causes a change in the angle of the burner nozzle, altering the nozzle angle and injection direction.

[0022] A further improvement of the present invention is that when the output shaft of the servo motor is connected to the first flexible shaft through the first connecting component, the stud is rotated by the round rod so that the two sets of moving plates drive the drive plate to move in opposite directions until the slide rod is in the receiving groove, the second protrusion is inserted into the second groove, and when the slide rod and the limiting groove are aligned, the round rod is reversed so that the slide rod is inserted into the limiting groove.

[0023] A further improvement of the present invention is that when the second flexible shaft is connected to the screw through the second connecting assembly, the movable rod is squeezed and the torsion spring is compressed until the positioning rod is located in the first square plate. Then, the first protrusion is inserted into the first groove. When the positioning rod and the positioning groove are aligned, the positioning rod is inserted into the positioning groove under the action of the torsion spring, so that the second flexible shaft and the screw are connected.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention, employing a servo motor, screw, and solid rod transmission system for the deflection component, enables precise angle adjustment. This allows the burner nozzle to adjust its direction in real time as needed, optimizing the distribution of combustion airflow within the furnace. This flexible adjustment capability is particularly beneficial for improving combustion efficiency under varying boiler loads or different fuel conditions. By precisely adjusting the nozzle deflection angle, this invention ensures a uniform distribution of combustion airflow within the furnace, reducing incomplete combustion. The direction of the burner nozzle can be dynamically adjusted according to different operating conditions, better adapting to varying loads and fuel requirements, ultimately improving the overall combustion efficiency of the boiler. The adjustable deflection angle of this invention allows the burner nozzle to adjust according to the temperature distribution within the furnace, effectively avoiding excessively high or low temperature areas and optimizing furnace thermal efficiency. By controlling the direction of the combustion airflow, a more uniform temperature distribution within the furnace can be achieved, thereby reducing heat loss and improving overall thermal efficiency. This invention's precise control of the combustion process helps optimize the fuel-oxygen mixing ratio, resulting in more complete combustion. By adjusting the nozzle direction, over-combustion or incomplete combustion in certain areas can be avoided, thereby reducing emissions of pollutants such as carbon monoxide and nitrogen oxides, meeting environmental protection requirements. Thanks to the cooperation between the servo motor and the deflection assembly, the system can dynamically adjust the nozzle deflection angle according to the specific needs of the furnace. This flexibility allows the boiler to operate under different conditions, adapting to load changes or different fuel types, and even maintaining efficient and stable operation under some special operating conditions. The mechanical transmission method using a screw and solid rod is generally robust and durable, maintaining a long service life in high-temperature and high-pressure working environments. Furthermore, the high precision and stability of the servo motor control system ensures stable operation of the equipment for extended periods, reducing equipment failures and maintenance costs. This invention can adapt to the different combustion characteristics of different types of fuels (such as natural gas, coal, biomass, etc.). By adjusting the deflection angle of the burner nozzle, adjustments can be made according to the combustion characteristics of different fuels to achieve optimal combustion results. In conclusion, this invention offers the advantages of flexible and precise adjustment of the burner nozzle angle, enabling dynamic adjustment of the combustion airflow direction according to actual operating requirements. This significantly improves combustion efficiency, optimizes temperature distribution, reduces emissions, adapts to different operating conditions, and enhances system reliability and ease of operation. These combined benefits improve the overall performance and environmental adaptability of the boiler, overcoming the shortcomings of traditional boiler systems that struggle to adjust in real-time according to demand during operation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the burner nozzle distribution of the present invention;

[0027] Figure 2 This is a front view schematic diagram of the deflection component of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0029] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B;

[0030] Figure 5 This is a top view of the first connecting component of the present invention;

[0031] Figure 6 This is a top view of a partial structure of the second connecting component of the present invention;

[0032] Among them, 10, furnace walls; 20, burner nozzle; 30, housing; 31, servo motor; 32, first flexible shaft; 33, square hole; 34, second flexible shaft; 35, screw; 36, first fixing plate; 37, screw rod; 38, solid rod; 39, threaded groove; 40, first connecting plate; 41, first square plate; 42, first groove; 43, first protrusion; 44, side plate; 45, rotating shaft; 46, movable rod; 47, torque. 48. Spring; 49. First telescopic rod; 40. Support plate; 41. Positioning rod; 492. Positioning groove; 50. Second connecting plate; 51. Second square plate; 52. Second groove; 53. Second protrusion; 54. Storage groove; 55. Second fixing plate; 56. Sliding rod; 57. Limiting groove; 58. Drive plate; 59. Spring; 591. Moving plate; 592. Fixing block; 593. Stud; 594. Second telescopic rod; 595. Round rod. Detailed Implementation

[0033] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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 invention.

[0035] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Example 1:

[0037] See Figure 1 and Figure 2 A deflectable wall-mounted tangential boiler burner includes a plurality of burner nozzles 20, which are respectively disposed on the four walls 10 of the furnace, and the burner nozzles 20 are connected to a deflection assembly.

[0038] The deflection assembly includes a servo motor 31, which is connected to a screw 37. A solid rod 38 is sleeved on the screw 37. A threaded groove 39 that mates with the thread of the screw 37 is opened inside the solid rod 38. The solid rod 38 is connected to the burner nozzle 20.

[0039] Example 2:

[0040] See Figure 1 and Figure 2 A method for operating a deflectable wall-mounted tangential boiler burner, comprising the following steps:

[0041] Step one: After receiving the command from the control system, the servo motor 31 starts. The servo motor 31 is usually an electric motor, which can precisely control the rotation angle and speed.

[0042] Step two, the servo motor 31 is connected to the screw 37 via a shaft. When the servo motor 31 rotates, it drives the screw 37 to rotate along its axial direction.

[0043] Step three: The screw 37 has a threaded structure. When the screw 37 rotates, the solid rod 38, which is fitted onto the screw, moves linearly along the axial direction of the screw 37. Since the rotation of the screw 37 drives the solid rod to advance or retract, the linear displacement of the solid rod is the direct effect of the screw's rotation. The threaded engagement between the solid rod 38 and the screw 37 allows the rotating screw 37 to be precisely converted into the linear motion of the solid rod 38.

[0044] Step four: The solid rod 38 is mechanically connected to the burner nozzle 20. The linear displacement of the solid rod 38 directly causes the angle of the burner nozzle 20 to change. The movement of the solid rod 38 causes the burner nozzle 20 to deflect in a certain direction, and the specific deflection angle depends on the rotation angle of the screw and the pitch of the thread.

[0045] Step five: As the solid rod 38 moves, the burner nozzle 20 deflects, changing its angle and injection direction. The deflection angle of the burner nozzle 20 determines the distribution of the fuel-air mixture within the furnace.

[0046] In this embodiment, the servo motor 31 is typically equipped with a position sensor and a feedback control system, enabling real-time monitoring of the position of the solid rod 38 and the angle of the burner nozzle 20. The control system adjusts control commands based on real-time data such as temperature and pressure within the furnace, ensuring that the deflection angle of the burner nozzle and the combustion state in the furnace meet predetermined operating requirements. Thus, the servo motor makes fine adjustments based on feedback signals, guaranteeing the stability and efficiency of the combustion process. Through this transmission process, the deflection angle of the burner nozzle 20 is precisely controlled, thereby achieving effective regulation of the combustion airflow and temperature distribution within the furnace. This is of great significance for improving boiler combustion efficiency, reducing emissions, and optimizing the combustion process.

[0047] In this embodiment, the transmission process starts from a servo motor, which drives the linear movement of a solid rod through the rotation of a screw, thereby adjusting the deflection angle of the burner nozzle. The entire process relies on the coordinated operation of mechanical transmission and the servo control system to precisely adjust the position of the burner nozzle and optimize the boiler's combustion process.

[0048] Example 3:

[0049] See Figure 2 The deflection assembly includes a servo motor 31, which is fixedly installed in the housing 30. The output shaft of the servo motor 31 is detachably connected to a first flexible shaft 32 via a first connecting assembly. A square hole 33 is opened in the first flexible shaft 32. A second flexible shaft 34 is slidably connected in the square hole 33. A screw 37 is rotatably connected to a first fixed plate 36 via a bearing. One end of the second flexible shaft 34 is detachably connected to the screw 37 via a second connecting assembly. A solid rod 38 is rotatably connected to one side of the burner nozzle 20. A threaded groove 39 is opened in the solid rod 38. The screw 37 is threadedly connected to the threaded groove 39. A screw 35 is threadedly connected to the top side wall of the first flexible shaft 32. One end of the screw 35 is in close contact with the second flexible shaft 34.

[0050] In use, first fix the first fixing plate 36 and the housing 30 in a suitable position. Then, the screw 37 can be rotated by the servo motor 31, the first flexible shaft 32 and the second flexible shaft 34. When the screw 37 rotates, it can squeeze the burner nozzle 20 to make the burner nozzle 20 rotate counterclockwise and achieve deflection.

[0051] Example 4:

[0052] See Figure 2 , Figure 4 and Figure 5 The output shaft of the servo motor 31 is connected to the first flexible shaft 32 via a first connecting assembly. The first connecting assembly includes a second connecting plate 50. The output shaft of the servo motor 31 is fixedly mounted on the second connecting plate 50. A second square plate 51 is fixedly mounted on the bottom of the first flexible shaft 32. A second groove 52 is formed in the second square plate 51. A second protrusion 53 is fixedly mounted on one side of the second connecting plate 50 and inserted into the second groove 52. A storage groove 54 is formed on the second square plate 51 located on both sides of the second groove 52, and the storage groove 54 is connected to the second groove 52. A second fixing plate 55 is fixedly mounted in the storage groove 54. A slide rod 56 is slidably connected to the second fixing plate 55. Limiting grooves 57 are fixedly installed at both ends of the second protrusion 53. One end of the slide rod 56 is inserted into the limiting groove 57, the drive plate 58 is fixedly installed on the other end of the slide rod 56, the spring 59 is sleeved on the slide rod 56, and the two ends of the spring 59 are respectively fixedly connected to the drive plate 58 and the second fixed plate 55. The moving plate 591 is fixedly installed on one side of the drive plate 58. The two ends of one side of the second square plate 51 are fixedly installed with fixing blocks 592. The stud 593 is threadedly connected to the fixing block 592, and one end of the stud 593 is rotatably connected to the moving plate 591 through a bearing. The opposite ends of the two sets of studs 593 are fixedly installed with the second telescopic rod 594. The two ends of the round rod 595 are fixedly installed with the second telescopic rod 594. The second telescopic rod 594 is preferably the telescopic rod in patent CN203939829U.

[0053] In use, the stud 593 is rotated by the round rod 595, so that the two sets of moving plates 591 drive the drive plate 58 to move in opposite directions until the slide rod 56 is in the receiving groove 54. Then, the second protrusion 53 is inserted into the second groove 52. When the slide rod 56 and the limiting groove 57 are aligned, the round rod 595 can be reversed so that the slide rod 56 is inserted into the limiting groove 57. At this point, the servo motor 31 and the first flexible shaft 32 can be connected. During this process, the spring 59 will be in a deformed state to reinforce the position of the slide rod 56 to a certain extent.

[0054] Example 5:

[0055] See Figure 2 , Figure 3 and Figure 6The second flexible shaft 34 is connected to the screw 37 via a second connecting assembly. The second connecting assembly includes a first connecting plate 40, which is fixedly mounted on one end of the screw 37. A first square plate 41 is fixedly mounted on one end of the second flexible shaft 34. A first groove 42 is formed in the first square plate 41. A first protrusion 43 is fixedly mounted on one side of the first connecting plate 40 and inserted into the first groove 42. Two sets of side plates 44 are fixedly mounted on both ends of the first square plate 41. A rotating shaft 45 is rotatably connected to the side plates 44 via bearings. A movable rod 46... A torsion spring 47 is fixedly installed between two sets of rotating shafts 45, and the two ends of the torsion spring 47 are fixedly connected to the movable rod 46 and the side plate 44 respectively. The first telescopic rod 48 is fixedly installed on one end of the movable rod 46, and the support plate 49 is fixedly installed on one end of the first telescopic rod 48. The positioning rod 491 is rotatably connected to one side of the support plate 49, and the positioning rod 491 is slidably connected to the side wall of the first square plate 41. The two ends of the first protrusion 43 are provided with positioning grooves 492, and one end of the positioning rod 491 is inserted into the positioning groove 492.

[0056] In use, the movable rod 46 is pressed, at which time the torsion spring 47 will deform until the positioning rod 491 is located in the first square plate 41. Then, the first protrusion 43 is inserted into the first groove 42. When the positioning rod 491 and the positioning groove 492 are aligned, the positioning rod 491 can be inserted into the positioning groove 492 under the action of the torsion spring 47. At this point, the second flexible shaft 34 and the screw 37 can be connected.

[0057] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A deflectable wall-mounted tangential boiler burner, characterized in that, It includes several burner nozzles (20), which are respectively installed on the four walls (10) of the furnace, and the burner nozzles (20) are connected to the deflection assembly; The deflection assembly includes a servo motor (31), the servo motor (31) is connected to a screw (37), a solid rod (38) is sleeved on the screw (37), a threaded groove (39) is opened in the solid rod (38) to match the thread of the screw (37), and the solid rod (38) is connected to the burner nozzle (20). The output shaft of the servo motor (31) is connected to the first flexible shaft (32), the first flexible shaft (32) has a square hole (33), the square hole (33) is slidably connected to the second flexible shaft (34), the second flexible shaft (34) is connected to the screw (37), and the screw (37) is rotatably connected to the first fixed plate (36) through the bearing.

2. The deflectable wall-mounted tangential boiler burner according to claim 1, characterized in that, The output shaft of the servo motor (31) is connected to the first flexible shaft (32) via the first connecting component; The first connecting assembly includes a second connecting plate (50), the output shaft of the servo motor (31) is fixedly mounted on the second connecting plate (50), a second square plate (51) is fixed to the bottom of the first flexible shaft (32), a second groove (52) is provided on the second square plate (51), a second protrusion (53) is fixed on one side of the second connecting plate (50), the second protrusion (53) is inserted into the second groove (52), and a storage slot (54) is provided on the second square plate (51), the storage slot (54) and the second groove are connected. (52) Connected, a second fixing plate (55) is provided in the storage slot (54), a slide rod (56) is slidably connected on the second fixing plate (55), and a limit groove (57) is opened at both ends of the second protrusion (53). One end of the slide rod (56) is inserted into the limit groove (57), and a drive plate (58) is fixed at the other end of the slide rod (56). A spring (59) is sleeved on the slide rod (56), and the two ends of the spring (59) are fixedly connected to the drive plate (58) and the second fixing plate (55) respectively.

3. A deflectable wall-mounted tangential boiler burner according to claim 2, characterized in that, A movable plate (591) is provided on one side of the drive plate (58). Fixing blocks (592) are fixedly installed at both ends of one side of the second square plate (51). A stud (593) is threaded onto the fixing block (592). One end of the stud (593) is rotatably connected to the movable plate (591) through a bearing. A second telescopic rod (594) is fixedly installed at the opposite ends of the two sets of studs (593). Round rods (595) are fixedly installed at both ends of the second telescopic rod (594).

4. A deflectable wall-mounted tangential boiler burner according to claim 1, characterized in that, The second flexible shaft (34) is connected to the screw (37) via the second connecting assembly; The second connecting assembly includes a first connecting plate (40), which is disposed on one end of a screw (37). A first square plate (41) is disposed on one end of a second flexible shaft (34). A first groove (42) is provided on the first square plate (41). A first protrusion (43) is provided on one side of the first connecting plate (40). The first protrusion (43) is inserted into the first groove (42). Two sets of side plates (44) are fixedly installed on both ends of the first square plate (41). A rotating shaft (45) is rotatably connected to the side plate (44) through a bearing. A movable rod (46) is provided between the two sets of rotating shafts (45). A torsion spring (47) is sleeved on the rotating shaft (45). The two ends of the torsion spring (47) are fixedly connected to the movable rod (46) and the side plate (44) respectively. A first telescopic rod (48) is provided on one end of the movable rod (46). A support plate (49) is provided on one end of the first telescopic rod (48).

5. A deflectable wall-mounted tangential boiler burner according to claim 4, characterized in that, A positioning rod (491) is rotatably connected to one side of the support plate (49). The positioning rod (491) is slidably connected to the side wall of the first square plate (41). Positioning grooves (492) are provided at both ends of the first protrusion (43). One end of the positioning rod (491) is inserted into the positioning groove (492).

6. A method for operating the deflectable wall-mounted tangential boiler burner as described in claim 1, characterized in that, Includes the following steps: The servo motor (31) starts after receiving the command from the control system; The servo motor (31) drives the screw (37) to rotate along its axis; When the screw (37) rotates, the solid rod (38) sleeved on the screw (37) will move linearly along the axis of the screw; The linear displacement of the solid rod (38) directly drives the angle change of the burner nozzle (20), changing the nozzle angle and injection direction.

7. The operating method of a deflectable wall-mounted tangential boiler burner according to claim 6, characterized in that, When the output shaft of the servo motor (31) is connected to the first flexible shaft (32) through the first connecting assembly, the stud (593) is rotated by the round rod (595) so that the two sets of moving plates (591) drive the drive plate (58) to move in opposite directions until the slide rod (56) is located in the storage groove (54). The second protrusion (53) is inserted into the second groove (52). When the slide rod (56) and the limiting groove (57) are aligned, the round rod (595) is reversed so that the slide rod (56) is inserted into the limiting groove (57).

8. The operating method of a deflectable wall-mounted tangential boiler burner according to claim 6, characterized in that, When the second flexible shaft (34) is connected to the screw (37) through the second connecting assembly, it squeezes the movable rod (46), and the torsion spring (47) is compressed until the positioning rod (491) is located in the first square plate (41). Then, the first protrusion (43) is inserted into the first groove (42). When the positioning rod (491) and the positioning groove (492) are aligned, the positioning rod (491) is inserted into the positioning groove (492) under the action of the torsion spring (47), so that the second flexible shaft (34) and the screw (37) are connected.

Images