Deflectable wall type tangential boiler burner and working method

Abstract

The invention belongs to the field of combustors, and discloses a deflectable wall type tangential boiler combustor and a working method, and due to the fact that a deflection assembly adopts a transmission mode of a servo motor, a screw rod and a solid rod, accurate angle adjustment can be achieved. Therefore, the direction of the burner nozzle can be adjusted in real time according to needs, and distribution of combustion airflow in a hearth is optimized. Especially under the condition of boiler load change or different fuels, the flexible adjusting capacity is beneficial for improving the combustion efficiency. By accurately adjusting the deflection angle of the nozzle, combustion airflow can be uniformly distributed in the hearth, and the incomplete combustion phenomenon is reduced. The direction of the nozzle of the combustor can be dynamically adjusted according to different working conditions, so that the requirements of different loads and different fuels are better met, and finally the overall combustion efficiency of the boiler is improved. By means of the adjustable deflection angle, the burner nozzle can be adjusted according to the distribution condition of the temperature in a hearth, and the situation that the temperature is too high or too low is effectively avoided.

Description

Technical Field

[0001] The invention belongs to the field of burners, and in particular relates to a deflectable wall-type tangential-circle boiler burner and a working method thereof. Background Art

[0002] The wall-type tangential-circle boiler is a pulverized coal boiler, usually used in supercritical or ultra-supercritical units. Its design feature is that the burners are arranged on the four walls of the furnace, and the pulverized coal combustion process is optimized by forming tangential combustion. Tangential combustion can effectively improve combustion efficiency, reduce the emission of harmful gases, and help to evenly distribute the airflow in the furnace. Each layer of burners usually corresponds to a pulverizer, and the fine injection of pulverized coal makes the mixture of fuel and air more uniform, thereby improving the thermal efficiency of the boiler. During the efficient and stable combustion process, the temperature distribution in the furnace is effectively controlled, avoiding areas with too high or too low temperatures, thereby improving the operating stability of the boiler.

[0003] In a wall-type tangential boiler, the design and arrangement of the burner are very critical. Usually, multiple burners are connected in parallel to ensure uniform airflow and temperature in the furnace. The position and direction of the burner nozzle have an important influence on the combustion effect, so the use of the deflection mechanism is very important. The deflection mechanism is mainly used to adjust the angle of the burner nozzle and change the direction of the mixed airflow of the sprayed coal powder and air, thereby improving the distribution of the airflow in the furnace and avoiding dead corners and uneven temperature problems. Through this adjustment, the burner can flexibly adapt to different working conditions and improve the combustion efficiency and thermal efficiency of the boiler.

[0004] However, the deflection mechanisms currently used in many wall-mounted cut-circle boilers have certain limitations in actual operation. Usually the positions and angles of these deflection mechanisms are fixed, which makes it impossible to adjust them in real time according to the combustion status in the furnace. Once the setting of the deflection mechanism cannot meet actual needs, it will often affect the stability and efficiency of the combustion. For example, when the boiler load changes, the airflow distribution in the furnace may no longer be uniform. If the deflection mechanism cannot be adjusted in time, it may cause local combustion to be too fast or too slow, thereby affecting the combustion efficiency and thermal efficiency of the entire boiler. Since the position adjustment of the deflection mechanism in the prior art is difficult and cannot flexibly respond to changing working conditions, the adjustment ability of the boiler is subject to certain limitations. Contents of the invention The purpose of the present invention is to overcome the disadvantage that it is difficult to change the position of a deflection mechanism according to actual needs, and to provide a deflectable wall-type tangential boiler burner and a working method.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a deflectable wall-type tangential-circle boiler burner, comprising a plurality of burner nozzles, the plurality of burner nozzles being respectively arranged on four walls of a furnace, the burner nozzles being connected to a deflection assembly; The deflection assembly comprises a servo motor, the servo motor is connected to a screw rod, a solid rod is arranged on the outer sleeve of the screw rod, a thread groove matching with the screw rod thread is arranged in the solid rod, and the solid rod is connected to the burner nozzle.

[0006] A further improvement of the present invention is that the output shaft of the servo motor is connected to the first flexible shaft, the first flexible shaft has a square hole in it, a second flexible shaft is slidably connected in the square hole, and the second flexible shaft is connected to the screw.

[0007] A further improvement of the present invention is that the screw rod is rotatably connected to the first fixed plate via a bearing.

[0008] 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 assembly; The first connecting component 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, the second protrusion is inserted into the second groove, a receiving groove is provided on the second square plate, the receiving groove is communicated with the second groove, a second fixed plate is provided in the receiving groove, a sliding rod is slidably connected to the second fixed plate, limiting grooves are provided at both ends of the second protrusion, one end of the sliding rod is inserted into the limiting groove, a driving plate is fixed to the other end of the sliding rod, a spring is sleeved on the sliding rod, and both ends of the spring are fixedly connected to the driving plate and the second fixed plate respectively.

[0009] A further improvement of the present invention is that a movable plate is provided on one side of the driving plate, fixed blocks are fixedly installed at both ends of one side of the second square plate, studs are threadedly connected to the fixed blocks, one end of the studs is rotatably connected to the movable plate through a bearing, second telescopic rods are fixedly installed on the opposite ends of the two groups of studs, and round rods are fixedly provided at both ends of the second telescopic rod.

[0010] A further improvement of the present invention is that the second flexible shaft is connected to the screw rod via a second connecting assembly; The second connecting component includes a first connecting plate, which is arranged on one end of the screw rod, a first square plate is arranged on one end of the second flexible shaft, a first groove is opened on the first square plate, a first protrusion is arranged on one side of the first connecting plate, the first protrusion is inserted into the first groove, two groups of side plates are fixedly installed at both ends of the first square plate, a rotating shaft is rotatably connected to the side plate through a bearing, a movable rod is arranged between the two groups of rotating shafts, a torsion spring is sleeved on the rotating shaft, two ends of the torsion spring are respectively fixedly connected to the movable rod and the side plate, a first telescopic rod is arranged on one end of the movable rod, and a support plate is arranged on one end of the first telescopic rod.

[0011] 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, both ends of the first protrusion are provided with positioning grooves, and one end of the positioning rod is inserted into the positioning groove.

[0012] In a second aspect, the present invention provides a method for operating a deflectable wall-type tangential-circle boiler burner, comprising the following steps: The servo motor starts after receiving the command from the control system; The servo motor rotates to drive the screw to rotate along its axial direction; When the screw rotates, the solid rod on the screw will move linearly along the axial direction of the screw; The linear displacement of the solid rod directly drives the angle change of the burner nozzle, changing the angle of the nozzle and the injection direction.

[0013] 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 assembly, the stud is rotated through the round rod so that the two sets of movable plates drive the driving plate to move backwards until the sliding rod is located in the receiving groove, and the second protrusion is inserted into the second groove. When the sliding rod and the limit groove are aligned, the round rod is reversed so that the sliding rod is inserted into the limit groove.

[0014] A further improvement of the present invention is that when the second flexible shaft is connected to the screw rod 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. Thereafter, 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 rod are connected.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can achieve precise angle adjustment because the deflection assembly adopts a transmission mode of a servo motor, a screw and a solid rod. This enables the burner nozzle to adjust its direction in real time as needed, and optimizes the distribution of the combustion airflow in the furnace. In particular, under boiler load changes or different fuel conditions, this flexible adjustment capability helps to improve combustion efficiency. The present invention can make the combustion airflow evenly distributed in the furnace by accurately adjusting the deflection angle of the nozzle, thereby 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 ultimately improve the overall combustion efficiency of the boiler. The adjustable deflection angle of the present invention enables the burner nozzle to be adjusted according to the distribution of the temperature in the furnace, effectively avoiding areas with too high or too low temperatures, and optimizing the thermal efficiency of the furnace. By controlling the direction of the combustion airflow, the temperature distribution in the furnace can be made more uniform, thereby reducing heat loss and improving the overall thermal efficiency. The present invention can accurately control the combustion process, which helps to optimize the mixing ratio of fuel and oxygen and make the combustion process more complete. By adjusting the direction of the nozzle, excessive combustion or incomplete combustion in some areas can be avoided, thereby reducing the emission of pollutants such as carbon monoxide and nitrogen oxides, which meets environmental protection requirements. Due to the cooperation between the servo motor and the deflection assembly, the system can dynamically adjust the deflection angle of the nozzle according to the specific needs of the furnace. This flexibility enables the boiler to operate under different working conditions, adapt to load changes or different types of fuels, and even maintain efficient and stable operation under some special operating conditions. Due to the mechanical transmission method of the screw and solid rod adopted in the present invention, this design is usually more sturdy and durable, and can maintain a long service life in a high temperature and high pressure working environment. In addition, the high precision and stability of the servo motor control system ensure that the equipment can operate stably for a long time, reducing equipment failures and maintenance costs. The present invention can adapt to different types of fuels (such as natural gas, coal, biomass, etc.) with different combustion characteristics. By adjusting the deflection angle of the burner nozzle, it can be adjusted according to the combustion characteristics of different fuels to achieve the best combustion effect. In conclusion, the present invention has the advantages of flexible and precise adjustment of the burner nozzle angle, can dynamically adjust the direction of the combustion airflow according to actual operation requirements, significantly improve combustion efficiency, optimize temperature distribution, reduce emissions, adapt to different working conditions, and improve the reliability and ease of operation of the system. These beneficial effects work together to improve the overall performance and environmental adaptability of the boiler, and solve the problem that the traditional boiler system is difficult to adjust in real time according to demand during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the burner nozzle distribution of the present invention; Figure 2 It is a front view schematic diagram of the deflection assembly of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle; Figure 5 It is a top view schematic diagram of a first connecting assembly of the present invention; Figure 6 It is a schematic top view of the local structure of the second connecting assembly of the present invention; Among them, 10, four walls of the furnace; 20, burner nozzle; 30, box; 31, servo motor; 32, first flexible shaft; 33, square hole; 34, second flexible shaft; 35, screw; 36, first fixing plate; 37, screw; 38, solid rod; 39, threaded groove; 40, first connecting plate; 41, first square plate; 42, first groove; 43, first convex block; 44, side plate; 45, rotating shaft; 46, movable rod; 47, torque Spring; 48, first telescopic rod; 49, support plate; 491, positioning rod; 492, positioning groove; 50, second connecting plate; 51, second square plate; 52, second groove; 53, second protrusion; 54, storage groove; 55, second fixed plate; 56, sliding rod; 57, limiting groove; 58, driving plate; 59, spring; 591, moving plate; 592, fixing block; 593, stud; 594, second telescopic rod; 595, round rod. DETAILED DESCRIPTION

[0017] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] Embodiment 1: See also Figure 1 and Figure 2 A deflectable wall-type tangential boiler burner comprises a plurality of burner nozzles 20, the plurality of burner nozzles 20 are respectively arranged on four walls 10 of the furnace, and the burner nozzles 20 are connected to a deflection assembly; The deflection assembly includes a servo motor 31 , which is connected to a screw rod 37 . A solid rod 38 is provided on the outer sleeve of the screw rod 37 . A thread groove 39 matching the thread of the screw rod 37 is provided inside the solid rod 38 . The solid rod 38 is connected to the burner nozzle 20 .

[0021] Embodiment 2: See also Figure 1 and Figure 2 , a working method of a deflectable wall-type tangential-circle boiler burner, the following steps: Step 1: The servo motor 31 starts after receiving the command from the control system. The servo motor 31 is usually an electric motor, which can accurately control the rotation angle and speed.

[0022] Step 2: The servo motor 31 is connected to the screw rod 37 via a shaft. When the servo motor 31 rotates, the screw rod 37 is driven to rotate along its axial direction.

[0023] Step 3: There is a thread structure on the screw 37. When the screw 37 rotates, the solid rod 38 on the screw will move 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 rotation of the screw. The threaded fit between the solid rod 38 and the screw 37 enables the rotating screw 37 to be accurately converted into the linear motion of the solid rod 38.

[0024] Step 4: The solid rod 38 is connected to the burner nozzle 20 through a mechanical connection. The linear displacement of the solid rod 38 directly drives the angle change of the burner nozzle 20. 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.

[0025] Step 5: With the movement of the solid rod 38, the burner nozzle 20 will deflect, changing the angle and injection direction of the burner nozzle 20. The deflection angle of the burner nozzle 20 determines the distribution of the fuel and air mixed flow in the furnace.

[0026] The servo motor 31 of this embodiment is generally equipped with a position sensor and a feedback control system, which can monitor the position of the solid rod 38 and the angle of the burner nozzle 20 in real time. The control system adjusts the control instructions according to the real-time data such as the temperature and pressure in the furnace to ensure that the deflection angle of the burner nozzle and the combustion state of the furnace meet the predetermined working requirements. In this way, the servo motor will make fine adjustments according to the feedback signal to ensure the stability and efficiency of the combustion process. Through this transmission process, the deflection angle of the burner nozzle 20 is accurately controlled, thereby achieving effective regulation of the combustion airflow and temperature distribution in the furnace. This is of great significance for improving the combustion efficiency of the boiler, reducing emissions, and optimizing the combustion process.

[0027] The transmission process of this embodiment starts from the servo motor, and the solid rod is driven to move linearly through the rotation of the screw, thereby adjusting the deflection angle of the burner nozzle. The whole process relies on the coordinated work of mechanical transmission and servo control system, which can accurately adjust the position of the burner nozzle and optimize the combustion process of the boiler.

[0028] Embodiment 3: See, 2, the deflection assembly includes a servo motor 31, the servo motor 31 is fixedly installed in the box body 30, the output shaft of the servo motor 31 is detachably connected to the first flexible shaft 32 through a first connecting assembly, a square hole 33 is opened in the first flexible shaft 32, the second flexible shaft 34 is slidably connected in the square hole 33, the screw 37 is rotatably connected to the first fixed plate 36 through a bearing, and one end of the second flexible shaft 34 is detachably connected to the screw 37 through a second connecting assembly, one side of the burner nozzle 20 is rotatably connected to the solid rod 38, a threaded groove 39 is opened in the solid rod 38, and the screw 37 is threadedly connected in the threaded groove 39, the top side wall of the first flexible shaft 32 is threadedly connected to the screw 35, and one end of the screw 35 is in close contact with the second flexible shaft 34.

[0029] When in use, first fix the first fixing plate 36 and the box body 30 at a suitable position, and 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, the burner nozzle 20 can be squeezed to make the burner nozzle 20 rotate counterclockwise to achieve deflection.

[0030] Embodiment 4: See also Figure 2 , Figure 4 and Figure 5The output shaft of the servo motor 31 is connected to the first flexible shaft 32 through 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. The second square plate 51 is fixedly mounted on the bottom of the first flexible shaft 32. The second groove 52 is opened in the second square plate 51. The second protrusion 53 is fixedly mounted on one side of the second connecting plate 50, and the second protrusion 53 is inserted into the second groove 52. The second square plate 51 located on both sides of the second groove 52 is provided with a receiving groove 54, and the receiving groove 54 is connected to the second groove 52. The second fixed plate 55 is fixedly mounted in the receiving groove 54. The sliding rod 56 is slidably connected to the second fixed plate 55. Both ends of the second protrusion 53 are fixedly mounted with limit grooves 57. , and one end of the sliding rod 56 is inserted into the limiting groove 57, the driving plate 58 is fixedly installed on the other end of the sliding rod 56, the spring 59 is sleeved on the sliding rod 56, and the two ends of the spring 59 are respectively fixedly connected to the driving plate 58 and the second fixed plate 55, the moving plate 591 is fixedly installed on one side of the driving plate 58, and the two ends of one side of the second square plate 51 are fixedly installed with a fixed block 592, the stud 593 is threadedly connected to the fixed 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 groups of studs 593 are fixedly installed with the second telescopic rod 594, and the two ends of the round rod 595 are fixedly installed with the second telescopic rod 594, and the second telescopic rod 594 is preferably the telescopic rod in patent CN203939829U.

[0031] When in use, the stud 593 is rotated through the round rod 595 so that the two sets of movable plates 591 drive the driving plate 58 to move backwards until the slide bar 56 is located in the storage groove 54. Thereafter, the second protrusion 53 is inserted into the second groove 52. When the slide bar 56 and the limit groove 57 are aligned, the round rod 595 can be reversed so that the slide bar 56 is inserted into the limit 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 bar 56 to a certain extent.

[0032] Embodiment 5: See also Figure 2 , Figure 3 and Figure 6The second flexible shaft 34 is connected to the screw rod 37 through the second connecting assembly. The second connecting assembly includes a first connecting plate 40, which is fixedly mounted on one end of the screw rod 37. A first square plate 41 is fixedly mounted on one end of the second flexible shaft 34. A first groove 42 is opened in the first square plate 41. A first protrusion 43 is fixedly mounted on one side of the first connecting plate 40, and the first protrusion 43 is inserted into the first groove 42. Two sets of side plates 44 are fixedly mounted on both ends of the first square plate 41. The rotating shaft 45 is rotatably connected to the side plates 44 through a bearing. The movable rod 46 It is fixedly installed between the two sets of rotating shafts 45, the torsion spring 47 is sleeved on the rotating shaft 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, 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, and positioning grooves 492 are provided at both ends of the first protrusion 43, and one end of the positioning rod 491 is inserted into the positioning groove 492.

[0033] When in use, the movable rod 46 is squeezed, and at this time, the torsion spring 47 will be deformed 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 rod 37 can be connected.

[0034] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. 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-type tangential boiler burner, characterized in that: It comprises a plurality of burner nozzles (20), the plurality of burner nozzles (20) being respectively arranged on four walls (10) of the furnace, and the burner nozzles (20) being connected to a deflection assembly; The deflection assembly comprises a servo motor (31), the servo motor (31) is connected to a screw rod (37), a solid rod (38) is provided on the outer sleeve of the screw rod (37), a thread groove (39) matching with the thread of the screw rod (37) is provided in the solid rod (38), and the solid rod (38) is connected to a burner nozzle (20).

2. A deflectable wall-type tangential circle boiler burner according to claim 2, characterized in that: 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) in it, a second flexible shaft (34) is slidably connected in the square hole (33), and the second flexible shaft (34) is connected to the screw rod (37).

3. A deflectable wall-type tangential circle boiler burner according to claim 2, characterized in that: The screw rod (37) is rotatably connected to the first fixed plate (36) via a bearing.

4. A deflectable wall-type tangential circle boiler burner according to claim 2, characterized in that: The output shaft of the servo motor (31) is connected to the first flexible shaft (32) via a first connecting component; The first connection assembly comprises a second connection plate (50), the output shaft of the servo motor (31) is fixedly mounted on the second connection 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 on the second square plate (51), a second protrusion (53) is fixedly mounted on one side of the second connection plate (50), the second protrusion (53) is inserted into the second groove (52), and a receiving groove (54) is formed on the second square plate (51), the receiving groove (54) and the second groove (52) is connected, a second fixing plate (55) is arranged in the receiving groove (54), a sliding rod (56) is slidably connected to the second fixing plate (55), both ends of the second protrusion (53) are provided with limiting grooves (57), one end of the sliding rod (56) is inserted into the limiting groove (57), and the other end of the sliding rod (56) is fixed with a driving plate (58), and a spring (59) is sleeved on the sliding rod (56), and the two ends of the spring (59) are respectively fixedly connected to the driving plate (58) and the second fixing plate (55).

5. A deflectable wall-type tangential circle boiler burner according to claim 4, characterized in that: A movable plate (591) is provided on one side of the driving plate (58); fixed blocks (592) are fixedly installed at both ends of one side of the second square plate (51); a stud (593) is threadedly connected to the fixed block (592); one end of the stud (593) is rotatably connected to the movable plate (591) via a bearing; second telescopic rods (594) are fixedly installed at opposite ends of two groups of studs (593); and round rods (595) are fixedly installed at both ends of the second telescopic rod (594).

6. A deflectable wall-type tangential circle boiler burner according to claim 2, characterized in that: The second flexible shaft (34) is connected to the screw rod (37) via a second connecting assembly; The second connecting assembly comprises a first connecting plate (40), the first connecting plate (40) being arranged on one end of the screw rod (37), a first square plate (41) being arranged on one end of the second flexible shaft (34), a first groove (42) being formed on the first square plate (41), a first convex block (43) being arranged on one side of the first connecting plate (40), the first convex block (43) being inserted into the first groove (42), two groups of side plates (44) being fixedly mounted on both ends of the first square plate (41), a rotating shaft (45) being rotatably connected to the side plate (44) via a bearing, a movable rod (46) being arranged between the two groups of rotating shafts (45), a torsion spring (47) being sleeved on the rotating shaft (45), two ends of the torsion spring (47) being fixedly connected to the movable rod (46) and the side plate (44) respectively, a first telescopic rod (48) being arranged on one end of the movable rod (46), and a supporting plate (49) being arranged on one end of the first telescopic rod (48).

7. A deflectable wall-type tangential circle boiler burner according to claim 6, characterized in that: A 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). Both 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).

8. An operating method of a deflectable wall-type tangential circle boiler burner according to claim 1, characterized in that: The following steps are involved: The servo motor (31) starts after receiving the command from the control system; The servo motor (31) rotates and drives the screw (37) to rotate along its axial direction; When the screw (37) rotates, the solid rod (38) disposed on the screw (37) moves linearly along the axial direction of the screw; The linear displacement of the solid rod (38) directly drives the angle of the burner nozzle (20) to change, thereby changing the angle of the nozzle and the injection direction.

9. The operating method of a deflectable wall-type tangential circle boiler burner according to claim 8, 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 through the round rod (595), so that the two sets of movable plates (591) drive the driving plate (58) to move in reverse until the slide bar (56) is located in the receiving groove (54), and the second protrusion (53) is inserted into the second groove (52). When the slide bar (56) and the limit groove (57) are aligned, the round rod (595) is reversed to allow the slide bar (56) to be inserted into the limit groove (57).

10. The operating method of a deflectable wall-type tangential circle boiler burner according to claim 8, characterized in that: When the second flexible shaft (34) is connected to the screw rod (37) through the second connecting assembly, the movable rod (46) is squeezed and the torsion spring (47) is compressed until the positioning rod (491) is located in the first square plate (41). Thereafter, 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 rod (37) are connected.

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