A rotary pneumatic shock wave soot blowing device

Abstract

This utility model relates to the technical field of soot blowing devices, specifically a rotary air-energy shock wave soot blowing device, including a frame. A connecting pipe is fixedly installed inside the frame, one end of which is rotatably connected to and communicates with a transition pipe. A guide sleeve is fixedly installed inside the frame. This utility model, by incorporating components such as a shock wave tank, an electric actuator, a first gear, a second gear, a central pipe, a soot blowing pipe, and nozzles, can replace traditional steam with pulsed shock waves during equipment operation. This makes the blowing force more concentrated, more targeted, and the soot removal effect better. Because air is used instead of steam, the cost is greatly reduced, possibly to only one-tenth or even one-twentieth of that of steam. Furthermore, since steam is no longer used, the moisture content in the flue gas is not increased, which has no negative impact on boiler operation and does not cause damage to the heating surfaces.

Description

Technical Field

[0001] This utility model relates to the technical field of soot blowing devices, and in particular to a rotary pneumatic shock wave soot blowing device. Background Technology

[0002] During the operation of a boiler system, energy-saving devices or air preheaters are used to recover the waste heat from the boiler exhaust gas, thereby improving energy utilization efficiency and achieving the goal of energy conservation and environmental protection. When working, energy-saving devices or air preheaters absorb the waste heat of the boiler exhaust gas through the heat exchange surface during the flow of exhaust gas. Since the exhaust gas contains a certain amount of particulate matter, and particulate matter easily adheres to the outer wall of the heat exchange surface, the heat exchange efficiency of the heat exchange surface decreases. Therefore, it is necessary to clean the deposits on the outer wall of the heat exchange surface regularly.

[0003] In existing technologies, steam is often used to continuously purge the deposits on the outer wall of the heating surface to achieve the purpose of cleaning the deposits on the outer wall of the heating surface. However, the use of steam can easily lead to an increase in the moisture content of the flue gas, which has a negative impact on boiler operation.

[0004] Therefore, a rotary gas-energy shock wave soot blowing device is proposed. Utility Model Content

[0005] The purpose of this invention is to address the drawback that using steam to clean the heated surfaces of equipment can easily lead to an increase in the moisture content of the flue gas, which negatively impacts boiler operation. Therefore, a rotary gas-powered shockwave soot blowing device is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotary pneumatic shockwave soot blowing device, comprising a frame and a shock tank, wherein a connecting pipe is fixedly assembled inside the frame, one end of the connecting pipe is rotatably connected to and communicates with a transition pipe, a guide sleeve is fixedly assembled inside the frame, a central tube is rotatably connected to the inner circumferential surface of the guide sleeve, the outer circumferential surface of the central tube is fixedly connected to the inner circumferential surface of the transition pipe, a soot blowing pipe is welded to one end of the central tube, a plurality of nozzles are fixedly connected to the outer circumferential surface of the soot blowing pipe, an electric actuator is fixedly assembled on the surface of the frame, a first gear is fixedly assembled at the output end of the electric actuator, a second gear is fixedly assembled on the outer circumferential surface of the central tube, and a chain is meshed between the tooth surfaces of the first gear and the second gear.

[0007] The effects achieved by the above components are as follows: by setting up components such as shock tank, electric actuator, first gear, second gear, central tube, soot blowing pipe and nozzle, the pulsed shock wave can replace the traditional steam during equipment operation, making the purging force more concentrated and targeted, and the ash removal effect better. Since air is used instead of steam, the cost is greatly reduced. At the same time, since steam is no longer used, the moisture content in the flue gas will not increase, which will not have a negative impact on boiler operation or cause damage to the heating surface.

[0008] Preferably, the nozzles are staggered along the axial direction of the soot blowing pipe.

[0009] The effect achieved by the above components is that the staggered arrangement of nozzles along the axial direction of the soot blowing pipe can further avoid dead angles in soot blowing.

[0010] Preferably, the diameter of the second gear is larger than the diameter of the first gear.

[0011] The effect achieved by the above components is that, since the diameter of the second gear is larger than that of the first gear, the rotational speed of the central tube can be further reduced, thus improving the deceleration effect.

[0012] Preferably, the end of the connecting pipe away from the transition pipe and the output end of the shock tank are both fixedly connected to a flange, the flange being a standard flange component, and the two flanges are fixedly connected.

[0013] The aforementioned components achieve the following effects: they can be connected to the output end of the shock tank via a flange, and the use of standardized flanges ensures a secure and airtight connection.

[0014] Preferably, the surface of the frame is detachably fitted with a protective cover, and the first gear is located inside the protective cover.

[0015] The effect achieved by the above components is that the protective cover can shield the first gear, preventing the equipment from being interfered with by external objects during operation.

[0016] Preferably, the surface of the electric actuator is electrically connected to a wire, one end of which is electrically connected to a control box, and the control box is electrically connected to the shock tank.

[0017] The effect achieved by the above components is that the control box can control the start, stop and rotation speed of the electric actuator, thereby realizing automated operation.

[0018] Preferably, the nozzle outlet has a duckbill-shaped or Laval-shaped structure.

[0019] The effect achieved by the above components is that the nozzle with a duckbill-shaped or Laval-shaped outlet can concentrate the airflow, increase the blowing force, and effectively remove the dust accumulated inside the equipment.

[0020] Preferably, the connecting pipe is divided into a wide diameter section, a contraction section, and a narrow diameter section, and the wide diameter section and the narrow diameter section of the connecting pipe are respectively fixedly installed at both ends of the contraction section.

[0021] The effect achieved by the above components is that the constricted section of the connecting pipe can further accelerate the airflow.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] In this invention, by setting up components such as a shock tank, an electric actuator, a first gear, a second gear, a central tube, a soot blowing pipe, and nozzles, the pulsed shock wave can replace traditional steam during equipment operation, making the purging force more concentrated, more targeted, and the ash removal effect better. Since air is used instead of steam, the cost is greatly reduced. At the same time, because steam is no longer used, the moisture content in the flue gas will not increase, which has no negative impact on boiler operation and will not cause damage to the heating surface.

[0024] In this invention, the nozzle with a duckbill-shaped or Laval-shaped outlet structure can concentrate the airflow, increase the blowing force, and effectively remove the accumulated dust inside the equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the planar structure of the frame of this utility model;

[0026] Figure 2 This is a partial planar structural diagram of the frame of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the connecting pipe of this utility model;

[0028] Figure 4 This is a schematic diagram of the planar structure of the frame in Embodiment 2 of this utility model;

[0029] Figure 5 This is a partial planar structural diagram of the frame in Embodiment 2 of this utility model;

[0030] Figure 6 This is a three-dimensional structural diagram of the frame in Embodiment 2 of this utility model.

[0031] Legend: 1. Frame; 2. Connecting pipe; 3. Guide sleeve; 4. Middle pipe; 5. Soot blowing pipe; 6. Nozzle; 7. Gearbox; 8. Motor; 9. First gear; 10. Second gear; 11. Chain; 12. Flange; 13. Protective cover; 14. Transition pipe; 15. Electric actuator; 16. Shock tank; 17. Control box; 18. Wire. Detailed Implementation

[0032] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0034] Example 1, as Figures 1-3 As shown, this utility model provides a rotary pneumatic shockwave soot blowing device, including a frame 1 and a shock tank 16. A connecting pipe 2 is fixedly installed inside the frame 1, and one end of the connecting pipe 2 is rotatably connected to and communicates with a transition pipe 14. A guide sleeve 3 is fixedly installed inside the frame 1, and a middle pipe 4 is rotatably connected to the inner circumferential surface of the guide sleeve 3. The outer circumferential surface of the middle pipe 4 is fixedly connected to the inner circumferential surface of the transition pipe 14. A soot blowing pipe 5 is welded to one end of the middle pipe 4, and a plurality of nozzles 6 are fixedly connected to the outer circumferential surface of the soot blowing pipe 5. An electric actuator 15 is fixedly installed on the surface of the frame 1, and a first gear 9 is fixedly installed at the output end of the electric actuator 15. A second gear 10 is fixedly mounted on the outer circumference surface. A chain 11 is connected to the teeth of the first gear 9 and the second gear 10. By setting up components such as a shock tank 16, an electric actuator 15, the first gear 9, the second gear 10, the central tube 4, the soot blowing pipe 5, and the nozzle 6, the equipment can use pulsed shock waves to replace traditional steam during operation, making the purging force more concentrated, more targeted, and the ash removal effect better. Since air is used instead of steam, the cost is greatly reduced. At the same time, since steam is no longer used, the moisture content in the flue gas will not increase, which will not have a negative impact on the boiler operation or cause damage to the heating surface.

[0035] Several nozzles 6 are staggered along the axial direction of the soot blowing pipe 5. The staggered arrangement of the nozzles 6 along the axial direction of the soot blowing pipe 5 can further avoid the occurrence of soot blowing dead angles. The diameter of the second gear 10 is larger than the diameter of the first gear 9. Since the diameter of the second gear 10 is larger than the diameter of the first gear 9, the rotational speed of the middle pipe 4 can be further reduced, and the deceleration effect can be improved. The end of the connecting pipe 2 away from the transition pipe 14 is fixedly connected to the output end of the shock tank 16 with a flange 12. The flange 12 is a standard flange part. The two flanges 12 are fixedly connected. With the help of the flange 12, it can be connected to the output end of the shock tank 16. The use of standardized flanges 12 can ensure the connection is firm and sealed. The surface of the frame 1 is detachably equipped with a protective cover 13. The first gear 9 is located inside the protective cover 13. The protective cover 13 can shield the first gear 9 to prevent the equipment from being interfered with by external objects during operation.

[0036] The surface of the electric actuator 15 is electrically connected to a wire 18, one end of which is electrically connected to a control box 17. The control box 17 can control the start, stop, and rotation speed of the electric actuator 15 to achieve automated operation. The control box 17 is electrically connected to the shock tank 16. The outlet of the nozzle 6 is in the shape of a duckbill or Laval. The nozzle 6 with the outlet in the shape of a duckbill or Laval can make the airflow more concentrated and the blowing force greater, effectively removing the dust accumulation inside the equipment. The connecting pipe 2 is divided into a wide diameter section, a contraction section, and a narrow diameter section. The wide diameter section and the narrow diameter section of the connecting pipe 2 are respectively fixedly installed at both ends of the contraction section. The contraction section of the connecting pipe 2 can further accelerate the airflow.

[0037] The overall working principle is as follows: When it is necessary to clean the deposits on the outer wall of the heated surface of the equipment, the frame 1 is installed in a suitable position on the equipment by bolts or welding, ensuring that the soot blowing pipe 5 is located between the heated surfaces of the equipment. Then, it is connected to the output end of the shock tank 16 by the flange 12. The control box 17 can control the start, stop and rotation speed of the electric actuator 15 to achieve automated operation. The electric actuator 15 drives the first gear 9 to run. The first gear 9, in conjunction with the chain 11, drives the second gear 10 to rotate. Since the diameter of the second gear 10 is larger than that of the first gear 9, it can further reduce the speed of the middle tube 4 and improve the deceleration effect. The guide sleeve 3 can guide the rotation of the middle tube 4. The middle tube 4 drives the soot blowing pipe 5 to rotate. The rotation of the soot blowing pipe 5 will adjust the angle of the nozzle 6, thereby achieving the purpose of thoroughly cleaning the heated surface of the equipment. Then, the shock tank 16 generates shock wave energy, which causes air to flow along the connecting pipe 2 to the middle tube 4. At this time, the contraction section of the connecting pipe 2 can further accelerate the air flow rate. The air will pass through the middle pipe 4, through the soot blowing pipe 5, and be discharged by the nozzle 6. The nozzle 6 with a duckbill or Laval-shaped outlet structure can make the airflow more concentrated and the soot blowing force greater, effectively removing the ash accumulation inside the equipment. The staggered arrangement of the nozzles 6 along the axial direction of the soot blowing pipe 5 can further avoid the occurrence of soot blowing dead angles. In addition, the nozzles 6 can perform all-round soot blowing on the boiler heating surface during rotation, achieving a highly efficient cleaning effect. The protective cover 13 can block the first gear 9 to prevent the equipment from being disturbed by external objects during operation. When the equipment is stopped, the nozzles 6 need to be kept horizontal. If the nozzles 6 are facing upward, ash will easily accumulate. If the nozzles 6 are staggered, the nozzles 6 should be located on the left and right sides of the soot blowing pipe 5. If the nozzles 6 are on one side, it should be ensured that the nozzles 6 are not facing upward, and it is best to keep them horizontal or below horizontal. This is achieved by the electric actuator 15, which is also one of the core designs.

[0038] Example 2: This application differs from Example 1 in that... Figure 1-6 As shown, a gearbox 7 is fixedly mounted on the surface of the frame 1, and a motor 8 is fixedly mounted on the surface of the gearbox 7. The output end of the motor 8 is fixedly connected to the input end of the gearbox 7. The control box 17 is electrically connected to the motor 8. The output end of the gearbox 7 is fixedly connected to the first gear 9. The motor 8 and the gearbox 7 can also drive the first gear 9 to rotate, which improves the flexibility of using the equipment.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A rotary pneumatic shockwave sootblowing device, characterized by: The device includes a frame (1) and a shock tank (16). A connecting pipe (2) is fixedly installed inside the frame (1). One end of the connecting pipe (2) is rotatably connected to and communicates with a transition pipe (14). A guide sleeve (3) is fixedly installed inside the frame (1). A middle pipe (4) is rotatably connected to the inner circumferential surface of the guide sleeve (3). The outer circumferential surface of the middle pipe (4) is fixedly connected to the inner circumferential surface of the transition pipe (14). A soot blowing pipe (5) is welded to one end of the middle pipe (4). Several nozzles (6) are fixedly connected to the outer circumferential surface of the soot blowing pipe (5). An electric actuator (15) is fixedly installed on the surface of the frame (1). A first gear (9) is fixedly installed at the output end of the electric actuator (15). A second gear (10) is fixedly installed on the outer circumferential surface of the middle pipe (4). A chain (11) is meshed between the tooth surfaces of the first gear (9) and the second gear (10).

2. A rotary gas energy shock wave soot blower according to claim 1, characterized in that: Several of the nozzles (6) are staggered along the axial direction of the soot blowing pipe (5).

3. A rotary gas energy shock wave soot blower as defined in claim 1, wherein: The diameter of the second gear (10) is greater than the diameter of the first gear (9).

4. A rotary gas energy shock wave soot blower as defined in claim 1, wherein: The end of the connecting pipe (2) away from the transition pipe (14) is fixedly connected to the output end of the shock tank (16) with a flange (12). The flange (12) is a standard flange part, and the two flanges (12) are fixedly connected.

5. A rotary gas energy shock wave soot blower as defined in claim 1, wherein: The surface of the frame (1) is detachably fitted with a protective cover (13), and the first gear (9) is located inside the protective cover (13).

6. The rotary pneumatic shock wave soot blowing device according to claim 1, characterized in that: The surface of the electric actuator (15) is electrically connected to a wire (18), one end of which is electrically connected to a control box (17), and the control box (17) is electrically connected to the shock tank (16).

7. A rotary pneumatic shock wave soot blowing device according to claim 1, characterized in that: The outlet of the nozzle (6) has a duckbill-shaped or Laval-shaped structure.

8. A rotary pneumatic shock wave soot blowing device according to claim 1, characterized in that: The connecting pipe (2) is divided into a wide diameter section, a contraction section and a narrow diameter section. The wide diameter section and the narrow diameter section of the connecting pipe (2) are respectively fixedly installed at both ends of the contraction section.

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