Internal cleaning device for tower drum of wind turbine generator

Abstract

The invention relates to the technical field of wind turbine generator tower maintenance, in particular to a wind turbine generator tower drum interior cleaning device which comprises a moving plate, a cleaning drum, a dust suction assembly, a negative pressure exhaust fan and a dust filtering assembly, through holes are formed in the moving plate, and moving wheels are mounted at the lower end of the moving plate; the cleaning cylinder is arranged on the moving plate and is provided with an air inlet and an air outlet; the dust collection assembly is communicated with the air inlet of the cleaning cylinder; the negative pressure exhaust fan is arranged at an air outlet of the cleaning cylinder; the dust filtering assembly is detachably installed in the cleaning cylinder and used for filtering and collecting dust impurities in gas flowing from the air inlet to the air outlet. According to the cleaning device, the negative-pressure exhaust fan can be used for exhausting air in the cleaning barrel to generate negative-pressure suction force, negative-pressure suction of dust on the inner wall of the tower barrel of the wind turbine generator is achieved through cooperation with the dust suction hose, the telescopic dust suction pipe and the dust suction nozzle, the cleaning device is convenient to move, and rapid cleaning operation of the tower barrel of the wind turbine generator is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbine tower maintenance, and in particular to a device for cleaning the interior of a wind turbine tower. Background Art

[0002] As a clean and renewable energy source, wind energy is increasingly valued by countries around the world. Wind turbines are often used in wind power generation. A wind turbine is a system that converts the kinetic energy of wind into electrical energy. A wind turbine includes a wind rotor and a generator. The wind rotor contains blades, a hub, reinforcements, etc. A wind power source consists of a wind turbine, a tower supporting the turbine, a battery charge controller, an inverter, an unloader, a grid connection controller, a battery pack, etc. The wind turbine tower is the tower pole for wind power generation, which mainly plays a supporting role in the wind turbine.

[0003] After a long period of use, a lot of dust tends to adhere to the inside of a wind turbine tower, and a cleaning device needs to be used to clean it regularly. However, the current wind turbine tower cleaning device still has certain shortcomings when in use. The overall structure of the cleaning device is relatively complex, the volume is large, and it is inconvenient to move, making it inconvenient to quickly clean the inside of the wind turbine tower. For this reason, we provide a wind turbine tower internal cleaning device to solve the above problems. Summary of the Invention

[0004] The present application provides a wind turbine tower internal cleaning device to solve the problem that the wind turbine tower cleaning device in the prior art has a relatively complex overall structure, a large size, is inconvenient to move, and is not convenient for rapid cleaning operations on the interior of the wind turbine tower.

[0005] The present application provides a wind turbine tower internal cleaning device, comprising: The movable plate is provided with a through hole, and a movable wheel is installed at the lower end of the movable plate; A cleaning cylinder is provided on the movable plate and has an air inlet and an air outlet; A dust collection component is connected to the air inlet of the cleaning cylinder; A negative pressure exhaust fan is installed at the air outlet of the cleaning cylinder; The dust filter assembly is detachably installed inside the cleaning cylinder to filter and collect dust and impurities in the gas flowing from the air inlet to the air outlet.

[0006] In one possible design, the dust collection assembly includes: A vacuum hose, one end of which is connected to the air inlet of the cleaning cylinder; A telescopic dust suction tube, one end of which is connected to the other end of the dust suction hose; The dust suction nozzle is installed at the other end of the telescopic dust suction tube.

[0007] In a possible design, a protective sleeve is provided on the telescopic dust suction tube near the dust suction hose, and an anti-slip ring is formed on the outer surface of the protective sleeve.

[0008] In one possible design, the dust filter assembly includes: A mounting plate is arranged on the inner wall of the cleaning cylinder; The dust filter cover is installed on the inner side of the mounting plate.

[0009] In one possible design, the dust filter includes: The top connecting ring can be detachably mounted on the mounting plate; The middle filter is connected to the lower end of the top mounting ring; The bottom bracket is connected to the lower end of the middle filter.

[0010] In a possible design, the dust filter cover is a conical cover with a diameter gradually decreasing from top to bottom.

[0011] In a possible design, at least two groups of clamping assemblies are provided on the movable plate around the cleaning cylinder, and the clamping assemblies are used to limit the position of the cleaning cylinder.

[0012] In one possible design, each set of clamping assemblies includes: A supporting plate, fixed on the movable plate; An arc-shaped splint is arranged opposite to the support plate; One end of the fastening screw is rotatably matched with the arc-shaped clamping plate, and the other end passes through the supporting plate and is threadedly matched with the supporting plate.

[0013] In a possible design, a supporting upright plate is provided on one side of the movable plate, and shoulder straps are symmetrically provided on both sides of the supporting upright plate.

[0014] In a possible design, it also includes a support rod and a push rod, the push rod is connected to the upper ends of the two support rods, a placement hole is opened on the support vertical plate, the lower end of the support rod is set in the placement hole and is detachably connected to the support vertical plate, one end of the shoulder strap is connected to the push rod, and the other end is connected to the support vertical plate.

[0015] In a possible design, a protective rubber pad is provided on the side of the supporting vertical plate, and a massage protrusion is formed on the surface of the protective rubber pad.

[0016] In one possible design, a battery box and a control switch are provided on the side of the supporting vertical plate, and the control switch is electrically connected to the negative pressure exhaust fan through a wire.

[0017] In a possible design, a sealing cover is threadedly connected to the inner wall of the top end of the cleaning cylinder, a gripping handle is connected to the upper surface of the sealing cover, and an observation frame is fixedly embedded on the upper surface of the sealing cover.

[0018] The inner bottom wall of the placement hole is connected to a support spring, and the top of the support spring is fixedly connected to the bottom end of the support rod; the side of the support vertical plate is threadedly connected with a positioning screw, and the left side of the support rod is provided with a group of positioning grooves.

[0019] The beneficial effects of this application are as follows: 1. The wind turbine tower internal cleaning device, by arranging a movable plate, a movable wheel, a push rod, a cleaning cylinder, a dust filter cover, a negative pressure exhaust fan, a dust suction hose, a telescopic dust suction tube and a dust suction nozzle, can utilize the negative pressure exhaust fan to extract air from the inside of the cleaning cylinder to generate negative pressure suction, and by cooperating with the dust suction hose, the telescopic dust suction tube and the dust suction nozzle, negative pressure suction of dust on the inner wall of the wind turbine tower is achieved, and the cleaning device is convenient to move, thereby facilitating the rapid cleaning operation of the wind turbine tower.

[0020] 2. The wind turbine tower internal cleaning device can adjust the push rod up and down by setting a supporting vertical plate, a protective rubber pad, a massage convex, a placement hole, a support spring, a support rod, a push rod, a binding ring, a shoulder strap and a tightening buckle. The movable plate can be carried and moved by cooperating with the shoulder strap and the tightening buckle, which is convenient for carrying and climbing the cleaning device and facilitating the cleaning operation of the wind turbine tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of the overall three-dimensional structure of the wind turbine tower internal cleaning device provided in an embodiment of the present application; Figure 2 A side view of a support plate of a wind turbine tower internal cleaning device provided in an embodiment of the present application; Figure 3 A bottom view of the movable plate of the wind turbine tower internal cleaning device provided in an embodiment of the present application; Figure 4 A side sectional view of a support plate of a wind turbine tower internal cleaning device provided in an embodiment of the present application; Figure 5 A schematic diagram of the internal anatomical structure of a cleaning cylinder of a wind turbine tower internal cleaning device provided in an embodiment of the present application; Figure 6 A top-sectional view of the cleaning cylinder of the wind turbine tower internal cleaning device provided in an embodiment of the present application.

[0023] Reference numerals: 1. Moving plate; 2. Support plate; 3. Battery box; 4. Clamping assembly; 41. Support plate; 42. Bearing; 43. Fastening screw; 44. Threaded barrel; 45. Curved clamping plate; 5. Cleaning barrel; 6. Moving wheel; 7. Storage tank; 8. Sealing cover; 9. Grip; 10. Observation frame; 11. Vacuum hose; 12. Anti-slip ring; 13. Protective cover; 14. Telescopic vacuum hose; 15. Vacuum nozzle; 16. Positioning screw; 17 , control switch; 18. Support rod; 19. Positioning slot; 20. Anti-slip sleeve; 21. Push rod; 22. Binding ring; 23. Shoulder strap; 24. Tightening buckle; 25. Protective rubber pad; 26. Massage cam; 27. Counterweight ring; 28. Negative pressure exhaust fan; 29. ​​Placement hole; 30. Support spring; 31. Mounting plate; 32. Dust filter cover; 321. Top connecting ring; 322. Middle filter; 323. Bottom bracket; 33. Through hole. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions of this application in conjunction with the embodiments. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] The following combination Figures 1-6 , describing the wind turbine tower internal cleaning device provided in an embodiment of the present application.

[0026] Reference Figure 1 As shown, the wind turbine tower internal cleaning device provided in the embodiment of the present application includes a movable plate 1, a cleaning cylinder 5, a dust collection assembly, a negative pressure exhaust fan 28, and a dust filter assembly. The movable plate 1 is provided with a through hole extending vertically therethrough, and two sets of movable wheels 6 are connected to the bottom surface of the movable plate 1 to enable free movement.

[0027] The cleaning cylinder 5 is arranged above the movable plate 1, and the cleaning cylinder 5 is located directly above the through hole. The upper end of the cleaning cylinder 5 has an air inlet, and the lower end of the cleaning cylinder 5 has an air outlet. The dust collection component is connected to the air inlet of the cleaning cylinder 5, and the negative pressure exhaust fan 28 is installed at the air outlet of the cleaning cylinder 5 to generate negative pressure so that the gas flows from the air inlet to the air outlet. In some specific embodiments, the dust collection component includes a dust collection hose 11, a telescopic dust collection tube 14 and a dust collection nozzle 15, one end of the dust collection hose 11 is connected to the air inlet of the cleaning cylinder 5, one end of the telescopic dust collection tube 14 is connected to the other end of the dust collection hose 11, and the dust collection nozzle 15 is installed at the other end of the telescopic dust collection tube 14. The dust collection hose 11 can increase the area reached by the dust collection nozzle 15 at the end of the telescopic dust collection tube 14. In some embodiments, a sealing cover 8 is threadedly connected to the inner wall of the top end of the cleaning cylinder 5, two gripping handles 9 are connected to the upper surface of the sealing cover 8, and an observation frame 10 is fixedly embedded on the upper surface of the sealing cover 8, so that the interior of the cleaning cylinder 5 can be observed, making it easier to understand the content of collected dust.

[0028] In some specific embodiments, a protective sleeve 13 is positioned near the suction hose 11 on the telescopic suction tube 14. The outer surface of the protective sleeve 13 is formed with an anti-slip ring 12. During operation, a user holds the protective sleeve 13 in place and manipulates the telescopic suction tube 14, allowing the suction nozzle 15 at the end of the telescopic suction tube 14 to freely move to any position within the wind turbine tower. The anti-slip ring 12 prevents the telescopic suction tube 14 from slipping out of the operator's hand.

[0029] The dust filter assembly is removably mounted within the cleaning cylinder 5. When the negative pressure blower 28 operates to cause air to flow from the air inlet to the air outlet, the dust filter assembly is used to filter and collect dust and impurities in the air flowing from the air inlet to the air outlet. In some specific embodiments, the dust filter assembly includes a mounting plate 31 and a dust filter screen 32. The mounting plate 31 is annular and fixed to the inner wall of the cleaning cylinder 5. The dust filter screen 32 is mounted to the inner side of the mounting plate 31 by clips or bolts.

[0030] Reference Figure 5 As shown, in some specific embodiments, the dust filter cover 32 includes a top connecting ring 321, an intermediate filter 322, and a bottom bracket 323. The upper end of the top connecting ring 321 is bolted to the mounting plate 31, the intermediate filter 322 is connected to the lower end of the top mounting ring 321, and the bottom bracket 323 is connected to the lower end of the intermediate filter 322. When the negative pressure blower 28 is operating to cause air to flow from the air inlet to the air outlet, the intermediate filter 322 is used to filter dust and impurities from the air flowing from the air inlet to the air outlet. Dust and impurities slide down to the bottom bracket 323 under the action of gravity and are collected. In this way, dust and impurities on the intermediate filter 322 can be automatically transferred to the bottom bracket 323, avoiding clogging of the intermediate filter 322 and not affecting the efficiency of subsequent dust removal.

[0031] In some specific embodiments, the dust filter cover 32 is a conical cover with a gradually decreasing diameter from top to bottom. Specifically, from top to bottom, the diameter of the top connecting ring 321 gradually decreases, the diameter of the middle filter 322 gradually decreases, and the diameter of the bottom support 323 gradually decreases. Thus, the top connecting ring 321, the middle filter 322, and the bottom support 323 collectively form a conical cover with a gradually decreasing diameter from top to bottom. On the one hand, the conical design can increase the projected area of ​​the middle filter 322 on the horizontal plane, thereby increasing the suction force of the negative pressure exhaust fan 28 below on the middle filter 322 and improving dust removal efficiency. On the other hand, under the action of airflow, the bottom support 323 vibrates due to its gravity, thereby driving the middle filter 322 to vibrate, accelerating the rapid shaking of dust and impurities on the middle filter 322 onto the bottom support 323, and preventing the middle filter 322 from clogging.

[0032] Reference Figure 6 As shown, in some specific embodiments, at least two sets of clamping assemblies 4 are disposed on the movable plate 1 around the cleaning cylinder 5, for example, two sets of clamping assemblies 4 are symmetrically disposed. The clamping assemblies 4 are used to limit the position of the cleaning cylinder 5. Specifically, each set of clamping assemblies 4 includes a support plate 41, an arcuate clamping plate 45, and a fastening screw 43. The support plate 41 is fixed to the movable plate 1, and the arcuate clamping plate 45 is disposed opposite to the support plate 41. One end of the fastening screw 43 is rotatably engaged with the arcuate clamping plate 45, and the other end passes through the support plate 41 and is threadedly engaged with the support plate 41. In some specific embodiments, the clamping assembly 4 includes two support plates 41 and two arc-shaped clamping plates 45. The side surfaces of the two support plates 41 that are away from each other are fixedly inlaid with threaded tubes 44. The inner wall of each threaded tube 44 is threadedly connected with a fastening screw 43. The side surfaces of the two arc-shaped clamping plates 45 that are away from each other are fixedly inlaid with bearings 42. The ends of the two fastening screws 43 that are close to each other are respectively fixedly connected to the inner rings of the two bearings 42, which can clamp and position the cleaning tube 5, thereby facilitating the stable use of the cleaning tube 5.

[0033] In some specific embodiments, a support plate 2 is provided on one side of the movable plate 1. A battery box 3 is connected to the left side of the support plate 2. A control switch 17 is connected to the left side of the support plate 2. The control switch 17 is electrically connected to the negative pressure exhaust fan 28 via a wire, which can conveniently control this device and facilitate the cleaning operation of the wind turbine tower. A set of protective rubber pads 25 are connected to the right side of the support plate 2. The right side of each protective rubber pad 25 is connected to a set of massage protrusions 26, which can protect and massage the back of the staff, facilitating the staff's comfortable back support. Straps 23 are symmetrically provided on both sides of the support plate 2.

[0034] In some specific embodiments, the device further includes two support rods 18 and a push rod 21. The push rod 21 is connected to the upper ends of the two support rods 18. Two placement holes 29 are provided on the support vertical plate 2. The lower ends of the two support rods 18 are respectively arranged in the corresponding placement holes 29 and are detachably connected to the support vertical plate 2. One end of the shoulder strap 23 is connected to the push rod 21 through a binding ring 22, and the other end is connected to the support vertical plate 2 through a binding ring 22. Specifically, the inner bottom wall of each placement hole 29 is connected to a support spring 30, and the top end of each support spring 30 is fixedly connected to the bottom end of the support rod 18. Two positioning screws 16 are threadedly connected to the left side of the support vertical plate 2. A group of positioning slots 19 are provided on the left side of each support rod 18, which can elastically support and screw-tighten the push rod 21, facilitate the height adjustment of the push rod 21, and make the massage convex 26 contact the operator's lumbar spine correspondingly, which is more comfortable.

[0035] In some specific embodiments, a linear drive is installed below the movable plate 1, a non-driving end of the linear drive is fixed below the movable plate 1, and a driving end of the linear drive is connected to the wheel seat of the movable wheel 6. For example, the drive is a hydraulic cylinder or an air cylinder or a linear push rod 21. The axis of the drive is toward the outside of the movable plate 1. The linear drive can drive the movable wheel 6 to move diagonally below the movable plate 1. When the operator climbs to a high place with the entire device on his back, the movable wheel 6 can roll on the inner wall of the wind turbine tower, thereby reducing the weight for the operator and helping to improve the stability of the device.

[0036] Working principle and usage process of this application: When in use, first place the cleaning cylinder 5 above the movable plate 1, then operate the clamping assembly 4, rotate the fastening screw 43 and drive the two arc-shaped clamping plates 45 to move closer to each other through the threaded connection with the threaded cylinder 44, so as to achieve the clamping and positioning of the cleaning cylinder 5. When cleaning the inside of the wind turbine tower, push the push rod 21 to rotate the moving wheel 6, push the movable plate 1 and the cleaning device to the inside of the wind turbine tower, click the control switch 17 to control the negative pressure exhaust fan 28 to work to extract the inside of the cleaning cylinder 5 and generate Negative pressure suction, the cleaning staff holds the telescopic dust suction tube 14 and presses the dust suction nozzle 15 against the inner wall of the wind turbine tower, and performs negative pressure suction on the dust on its surface. The dust falls into the inside of the dust filter cover 32, and the suction and dust collection inside the wind turbine tower is realized. When the inside of the wind turbine tower needs to be cleaned at a high place, the staff can carry the movable plate 1 and the cleaning device through the shoulder strap 23 and the tightening buckle 24, climb to a high place, and repeat the above cleaning operation to complete the cleaning operation at a high place on the inner wall of the wind turbine tower.

[0037] In the description of the present application, 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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0039] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In this application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0041] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A wind turbine tower internal cleaning device, characterized in that: include: A movable plate is provided with a through hole, and a movable wheel is installed at the lower end of the movable plate; A cleaning cylinder is provided on the movable plate and has an air inlet and an air outlet; a dust collection assembly, connected to the air inlet of the cleaning cylinder; A negative pressure exhaust fan is provided at the air outlet of the cleaning cylinder; The dust filter assembly is detachably mounted inside the cleaning cylinder and is used to filter and collect dust and impurities in the gas flowing from the air inlet to the air outlet.

2. The wind turbine tower internal cleaning device according to claim 1, characterized in that: The dust collection component comprises: A dust suction hose, one end of which is connected to the air inlet of the cleaning cylinder; a telescopic dust suction tube, one end of which is connected to the other end of the dust suction hose; The dust suction nozzle is installed at the other end of the telescopic dust suction tube.

3. The wind turbine tower internal cleaning device according to claim 2, characterized in that: A protective sleeve is provided on a position of the telescopic dust suction tube close to the dust suction hose, and an anti-slip ring is formed on the outer surface of the protective sleeve.

4. The wind turbine tower internal cleaning device according to claim 1, characterized in that: The dust filter assembly includes: A mounting plate, disposed on the inner wall of the cleaning cylinder; The dust filter cover is installed on the inner side of the installation plate.

5. The wind turbine tower internal cleaning device according to claim 4, characterized in that: The dust filter cover comprises: A top connecting ring, detachably mounted on the mounting plate; an intermediate filter screen connected to the lower end of the top mounting ring; The bottom bracket is connected to the lower end of the middle filter.

6. The wind turbine tower internal cleaning device according to claim 5, characterized in that: The dust filter screen is in the form of a cone with a diameter gradually decreasing from top to bottom.

7. The wind turbine tower internal cleaning device according to any one of claims 1 to 6, characterized in that: At least two groups of clamping components are provided on the movable plate around the cleaning cylinder, and the clamping components are used to limit the cleaning cylinder.

8. The wind turbine tower internal cleaning device according to claim 7, characterized in that: Each group of the clamping components comprises: A supporting plate, fixed on the movable plate; an arc-shaped splint, arranged opposite to the support plate; A fastening screw has one end that is rotationally engaged with the arc-shaped clamping plate, and the other end that passes through the support plate and is threadedly engaged with the support plate.

9. The wind turbine tower internal cleaning device according to any one of claims 1 to 6, characterized in that: A supporting vertical plate is provided on one side of the movable plate, and shoulder straps are symmetrically provided on both sides of the supporting vertical plate.

10. The wind turbine tower internal cleaning device according to claim 9, characterized in that: It also includes a support rod and a push rod, the push rod is connected to the upper ends of the two support rods, a placement hole is opened on the support vertical plate, the lower end of the support rod is set in the placement hole and is detachably connected to the support vertical plate, one end of the shoulder strap is connected to the push rod, and the other end is connected to the support vertical plate.

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