Lightning arrester of wind driven generator

Abstract

The invention provides a wind driven generator lightning arrester, and relates to the technical field of wind driven generators, the wind driven generator lightning arrester comprises a bottom box, the top surface of the bottom box is provided with a lightning protection mechanism, the back surface of the bottom box is provided with a clamping mechanism, the lightning protection mechanism comprises a top plate fixedly connected to the top surface of the bottom box, and the center of the top surface of the top plate is provided with two symmetrically arranged fixing plates; a rotating shaft is arranged between the two fixing plates and rotationally connected with a supporting column, adjusting cylinders are symmetrically arranged on the two sides of the top end of the supporting column, insulating rods are movably sleeved with the adjusting cylinders, conductive blocks are arranged at the ends, away from the adjusting cylinders, of the insulating rods, a plurality of lightning rods are arranged on the top faces of the conductive blocks, and grounding wires are fixedly connected to the bottom faces of the conductive blocks. According to the invention, the lightning protection angle and range at the high position of the wind driven generator are adjusted, and the use convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine generators, in particular to a lightning protection device for wind turbine generators. Background Art

[0002] A wind turbine is an electric device that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. In a broad sense, wind energy is also solar energy, so it can also be said that a wind turbine is a heat energy generator that uses the sun as a heat source and the atmosphere as a working medium. Wind power generation equipment needs to be erected in an open and high position to achieve the effect of maximizing the use of wind energy, but in thunderstorms, wind turbines are easily struck by lightning, causing damage to the equipment, so it is necessary to install a lightning rod on the top of the wind turbine to improve the safety of the wind turbine. Patent Publication No. CN215860624U discloses a lightning protection device for a wind turbine, including a base, the upper surface of the base is rotatably connected to a rotating shaft, the top of the rotating shaft is rotatably connected to a mounting frame, a storage slot is opened inside the mounting frame, a lightning rod is slidably connected inside the storage slot, a wire is fixedly connected to the lower end of the lightning rod, and a pull rod is rotatably connected to the side wall of the lightning rod. In order to solve the problem that the lightning arrester is fixed on the casing at the top of the wind turbine by welding, and its contact area with the wind turbine cannot be adjusted according to the change of wind force, the prior art uses the fan blades to drive the rotation of the turntable through the mounting frame under the action of the external wind, and the slider inside the turntable slides outward under the action of centrifugal force. At this time, the support column can be extended and contact with the top casing of the wind turbine, thereby increasing the bottom area of ​​the lightning arrester. However, the angle of the lightning rod is not convenient to adjust and the lightning rod cannot be protected when not in use, which leads to the problem of poor use effect of the lightning arrester. Summary of the invention

[0003] The present invention provides a wind turbine lightning arrester, aiming to provide a wind turbine lightning arrester to solve the problem that the angle of the lightning rod is inconvenient to adjust and the lightning rod cannot be protected when not in use, thereby resulting in poor use effect of the lightning arrester.

[0004] The present invention provides the following technical solutions to achieve the above objectives: A lightning protection device for a wind turbine generator comprises a bottom box, a lightning protection mechanism is arranged on the top surface of the bottom box, and a clamping mechanism is arranged on the back surface of the bottom box.

[0005] Furthermore, the lightning protection mechanism includes a top plate fixedly connected to the top surface of the bottom box, two symmetrically arranged fixed plates are arranged at the center of the top surface of the top plate, a rotating shaft is arranged between the two fixed plates, the rotating shaft is rotatably connected to the support, and adjustment cylinders are symmetrically arranged on both sides of the top of the support, an insulating rod is movably sleeved inside the adjusting cylinder, a conductive block is arranged at the end of the insulating rod away from the adjusting cylinder, a plurality of lightning rods are arranged on the top surface of the conductive block, and a grounding wire is fixedly connected to the bottom surface of the conductive block.

[0006] Furthermore, a forward and reverse motor is arranged in the adjusting cylinder, and the output shaft of the forward and reverse motor is fixedly connected with a threaded rod, the threaded rod is threadedly connected in the insulating rod, and a limit plate is movably sleeved around the insulating rod.

[0007] Furthermore, a first connecting seat is fixedly connected to the back side of the pillar, a second connecting seat is fixedly connected to the top surface of the top plate and located on the back side of the pillar, an electric telescopic rod is movably connected inside the second connecting seat, and the telescopic end of the electric telescopic rod is movably connected to the first connecting seat.

[0008] Furthermore, a central processing unit is fixedly connected to the left side of the inner cavity of the bottom box, and the central processing unit is electrically connected to the electric telescopic rod and the forward and reverse motors. A signal receiving module is fixedly connected to the right side of the inner cavity of the bottom box, and the signal receiving module is electrically connected to the central processing unit.

[0009] Furthermore, a waterproof pad is fixedly connected to the inner side of the bottom box, and a heat dissipation groove is provided on the bottom surface of the waterproof pad.

[0010] Furthermore, the clamping mechanism includes two connecting plates symmetrically arranged on the back side of the bottom box, a guide rod is fixedly connected between the two connecting plates, two sliding blocks are slidably connected to the guide rod, the sides of the two sliding blocks are fixedly connected to the clamping plates, the top surfaces of the two sliding blocks are fixedly connected to the transmission plates, the opposite sides of the two transmission plates are correspondingly matched with screws, and the two screws are connected by a threaded barrel.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a lightning protection device for a wind turbine generator. The forward and reverse motors in the adjusting cylinder drive the threaded rod to rotate, and the threaded rod drives the insulating rod to telescopically move in the adjusting cylinder. The setting of the limit plate ensures the stable movement of the insulating rod. The insulating rod drives the conductive block to move, thereby driving the lightning rod to move and adjust the range of lightning protection. The extension and retraction of the electric telescopic rod drives the support to rotate on the surface of the rotating shaft. The rotation of the support drives the lightning rod to tilt, thereby adjusting the lightning protection angle of the lightning rod and improving the adaptability. The lightning rod receives lightning and transmits it to the underground through the grounding wire for lightning protection.

[0012] 2. The present invention provides a lightning protection device and method for a wind turbine generator, which receives control signals from workers on the ground through a signal receiving module. The signal receiving module transmits the control signal to a central processing unit, and the central processing unit controls the start-up of the forward and reverse motors and the electric telescopic rod, so that the user can adjust the lightning protection angle and range at a high position of the wind turbine generator on the ground, thereby improving the convenience of use. The waterproof pad can improve the waterproof performance of the central processing unit and the signal receiving module, and the heat dissipation slot dissipates the heat in the bottom box in time.

[0013] 3. The present invention provides a lightning protection device and method for a wind turbine generator, wherein a clamping plate is placed on both sides of the wind turbine generator, and a threaded barrel is rotated. The threaded barrel drives the screws on both sides to move toward each other, and the screws drive the transmission plate to move. The transmission plate drives the sliding block to slide on the surface of the guide rod. The two sliding blocks drive the two clamping plates to move toward each other and clamp on both sides of the wind turbine generator, thereby fixing the lightning protection device. When removing the lightning protection device, the threaded barrel can be rotated in the opposite direction to dismantle the lightning protection device, thereby improving the convenience of installation and disassembly of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below only relate to some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a structural schematic diagram of the front side of the lightning protection mechanism of the present invention; Figure 3 It is a schematic diagram of the structure of the lightning protection mechanism of the present invention from the rear; Figure 4 It is a schematic cross-sectional structural diagram of the regulating cylinder of the present invention; Figure 5 It is a structural schematic diagram of the clamping mechanism of the present invention; Figure 6 It is a schematic cross-sectional structural diagram of the bottom box of the present invention.

[0016] Figure markings: 1-bottom box; 11-waterproof pad; 12-central processing unit; 13-signal receiving module; 14-heat sink; 2-lightning protection mechanism; 21-top plate; 22-fixed plate; 23-rotating shaft; 24-pillar; 241-first connecting seat; 242-electric telescopic rod; 243-second connecting seat; 25-adjusting cylinder; 251-forward and reverse motor; 252-threaded rod; 253-limiting plate; 26-insulating rod; 27-conductive block; 28-lightning rod; 29-grounding wire; 3-clamping mechanism; 31-connecting plate; 32-guide rod; 33-sliding block; 34-transmission plate; 35-screw; 36-threaded cylinder; 37-clamping plate. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] It should be noted that in the present invention: the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or apparatuses; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These The terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation; the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence; the terms "install", "set", "provided with", "connected", "connected", "sleeved", etc. should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. In addition, some terms can be used to express other meanings in addition to indicating orientation or positional relationships. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0019] Example 1. Figure 1-6As shown, the present invention provides a lightning protection device for a wind turbine generator, comprising a bottom box 1, a lightning protection mechanism 2 is arranged on the top surface of the bottom box 1, and a clamping mechanism 3 is arranged on the back surface of the bottom box 1. The lightning protection mechanism 2 includes a top plate 21 fixedly connected to the top surface of the bottom box 1, a fixed plate 22 is fixedly connected to the middle of the top surface of the top plate 21, and the number of the fixed plates 22 is two. A rotating shaft 23 is fixedly connected between the two fixed plates 22, and a support 24 is rotatably connected to the surface of the rotating shaft 23. Both sides of the top of the support 24 are fixedly connected with an adjusting cylinder 25, and an insulating rod 26 is movably sleeved inside the adjusting cylinder 25. One end of the insulating rod 26 extends to the outside of the adjusting cylinder 25 and is fixedly connected with a conductive block 27. A lightning rod 28 is fixedly connected to the top surface of the conductive block 27, and a grounding wire 29 is fixedly connected to the bottom surface of the conductive block 27. The bottom end of the grounding wire 29 is connected to the ground. A forward and reverse motor 251 is fixedly connected to one side of the inner cavity of the adjusting cylinder 25, and a threaded rod 252 is fixedly connected to the output shaft of the forward and reverse motor 251. The surface of the threaded rod 252 is threadedly connected to the inside of the insulating rod 26, and both ends of the side of the insulating rod 26 are movably sleeved with a limit plate 253. One end of the positioning plate 253 is fixedly connected to the inner cavity side of the adjusting cylinder 25, and the back side of the pillar 24 is fixedly connected with the first connecting seat 241. The top surface of the top plate 21 and the back side of the pillar 24 are fixedly connected with the second connecting seat 243. The inside of the second connecting seat 243 is movably sleeved with an electric telescopic rod 242. The telescopic end of the electric telescopic rod 242 is movably connected to the inside of the first connecting seat 241. The threaded rod 252 is driven to rotate by the forward and reverse motors 251 in the adjusting cylinder 25, and the threaded rod 252 drives the insulating rod 26 to telescopically move in the adjusting cylinder 25. The setting of the limiting plate 253 ensures that the insulating rod 26 moves smoothly, and the insulating rod 26 drives the conductive block 27 to move, thereby driving the lightning rod 28 to move and adjust the range of lightning protection. The extension and retraction of the electric telescopic rod 242 drives the pillar 24 to rotate on the surface of the rotating shaft 23, and the rotation of the pillar 24 drives the lightning rod 28 to tilt, thereby adjusting the lightning protection angle of the lightning rod 28 to improve adaptability.

[0020] Example 2. Figure 1-6As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, a central processing unit 12 is fixedly connected to the left side of the inner cavity of the bottom box 1, and the central processing unit 12 is electrically connected to the electric telescopic rod 242 and the forward and reverse motor 251. A signal receiving module 13 is fixedly connected to the right side of the inner cavity of the bottom box 1, and the signal receiving module 13 is electrically connected to the central processing unit 12. The inner side of the bottom box 1 is fixedly connected to a waterproof pad 11, and a heat dissipation groove 14 is provided on the bottom surface of the waterproof pad 11. The control signal of the worker on the ground is received through the signal receiving module 13, and the signal receiving module 13 transmits the control signal to the central processing unit 12. The central processing unit 12 controls the forward and reverse motor 251 and the electric telescopic rod 242 to start, so that the user can adjust the lightning protection angle and range at a high position of the wind turbine on the ground, thereby improving the convenience of use. The waterproof pad 11 can improve the waterproof performance of the central processing unit 12 and the signal receiving module 13, and the heat dissipation groove 14 dissipates the heat in the bottom box 1 in time.

[0021] Example 3. Figure 1-6 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the clamping mechanism 3 includes a connecting plate 31 fixedly connected to the back of the bottom box 1, the number of the connecting plates 31 is two, a guide rod 32 is fixedly connected between the two connecting plates 31, a sliding block 33 is slidably connected to the surface of the guide rod 32, the number of the sliding blocks 33 is two, the side surfaces of the two sliding blocks 33 are fixedly connected to a clamping plate 37, the top surfaces of the two sliding blocks 33 are fixedly connected to a transmission plate 34, the number of the transmission plates 34 is two, the side surfaces of the two transmission plates 34 are fixedly connected to a screw 35, and a screw 35 is set between the two screws 35. There is a threaded barrel 36, and the thread directions of the two screw rods 35 are opposite. The two ends of the inner cavity of the threaded barrel 36 are respectively provided with threads compatible with the two screw rods 35. By placing the clamping plates 37 on both sides of the wind turbine and rotating the threaded barrel 36, the threaded barrel 36 drives the screw rods 35 on both sides to move toward each other, the screw rods 35 drive the transmission plate 34 to move, the transmission plate 34 drives the sliding block 33 to slide on the surface of the guide rod 32, and the two sliding blocks 33 drive the two clamping plates 37 to move toward each other and clamp on both sides of the wind turbine, thereby fixing the lightning protection device. When dismantling, the threaded barrel 36 can be rotated in the opposite direction to dismantle the lightning protection device.

[0022] The use of this wind turbine lightning protection device is as follows: Step 1: Place the clamping plates 37 on both sides of the wind turbine generator, rotate the threaded cylinder 36, the threaded cylinder 36 drives the screws 35 on both sides to move toward each other, the screws 35 drive the transmission plate 34 to move, the transmission plate 34 drives the sliding block 33 to slide on the surface of the guide rod 32, and the two sliding blocks 33 drive the two clamping plates 37 to move toward each other and clamp on both sides of the wind turbine generator, thereby fixing the lightning protection device; Step 2: In thunderous weather, a worker sends a signal on the ground, and the signal receiving module 13 receives the signal and transmits it to the central processor 12. The central processor 12 controls the electric telescopic rod 242 and the forward and reverse motor 251 to start, and the forward and reverse motor 251 drives the threaded rod 252 to rotate, and the threaded rod 252 drives the insulating rod 26 to move telescopically in the adjustment tube 25, and the insulating rod 26 drives the conductive block 27 to move, thereby driving the lightning rod 28 to move to adjust the range of lightning protection, and the extension and retraction of the electric telescopic rod 242 drives the support 24 to rotate on the surface of the rotating shaft 23, and the rotation of the support 24 drives the lightning rod 28 to tilt, thereby adjusting the lightning protection angle of the lightning rod 28; Step 3: The lightning rod 28 receives the lightning, and the lightning is transferred to the grounding wire 29 through the conductive block 27. The grounding wire 29 guides the lightning into the ground for lightning protection.

[0023] Obviously, the above is only a part of the embodiments of the present invention, not all of the embodiments. The above embodiments are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any combination, modification, equivalent replacement, improvement and all other embodiments that can be made by those of ordinary skill in the art within the spirit and principle of the present invention should be within the protection scope of the present invention.

Claims

1. A lightning protection device for a wind turbine generator, characterized in that: The bottom box comprises a bottom box (1), the top surface of the bottom box (1) is provided with a lightning protection mechanism (2), and the back surface of the bottom box (1) is provided with a clamping mechanism (3).

2. The lightning protection device for a wind turbine generator according to claim 1, characterized in that: The lightning protection mechanism (2) comprises a top plate (21) fixedly connected to the top surface of the bottom box (1), two symmetrically arranged fixed plates (22) are arranged at the center of the top surface of the top plate (21), a rotating shaft (23) is arranged between the two fixed plates (22), the rotating shaft (23) is rotatably connected to a support (24), an adjusting cylinder (25) is symmetrically arranged on both sides of the top of the support (24), an insulating rod (26) is movably sleeved inside the adjusting cylinder (25), a conductive block (27) is arranged at one end of the insulating rod (26) away from the adjusting cylinder (25), a plurality of lightning rods (28) are arranged on the top surface of the conductive block (27), and a grounding wire (29) is fixedly connected to the bottom surface of the conductive block (27).

3. The lightning protection device for wind turbine generator according to claim 2, characterized in that: The adjustment cylinder (25) is provided with a forward and reverse motor (251), the output shaft of the forward and reverse motor (251) is fixedly connected to a threaded rod (252), the threaded rod (252) is threadedly connected to the insulating rod (26), and a limit plate (253) is movably sleeved around the insulating rod (26).

4. The lightning protection device for a wind turbine generator according to claim 2, characterized in that: The back side of the pillar (24) is fixedly connected to a first connection seat (241); the top surface of the top plate (21) and located on the back side of the pillar (24) is fixedly connected to a second connection seat (243); the interior of the second connection seat (243) is movably connected to an electric telescopic rod (242); the telescopic end of the electric telescopic rod (242) is movably connected to the first connection seat (241).

5. The lightning protection device for wind turbine generator according to claim 1, characterized in that: A central processing unit (12) is fixedly connected to the left side of the inner cavity of the bottom box (1), and the central processing unit (12) is electrically connected to the electric telescopic rod (242) and the forward and reverse motor (251). A signal receiving module (13) is fixedly connected to the right side of the inner cavity of the bottom box (1), and the signal receiving module (13) is electrically connected to the central processing unit (12).

6. The lightning protection device for a wind turbine generator according to claim 5, characterized in that: The inner side of the bottom box (1) is fixedly connected to a waterproof pad (11), and a heat dissipation groove (14) is provided on the bottom surface of the waterproof pad (11).

7. The lightning protection device for a wind turbine generator according to claim 1, characterized in that: The clamping mechanism (3) comprises two connecting plates (31) symmetrically arranged on the back side of the bottom box (1); a guide rod (32) is fixedly connected between the two connecting plates (31); two sliding blocks (33) are slidably connected to the guide rod (32); the sides of the two sliding blocks (33) are fixedly connected to clamping plates (37); the top surfaces of the two sliding blocks (33) are fixedly connected to transmission plates (34); screw rods (35) are correspondingly arranged on opposite sides of the two transmission plates (34); and the two screw rods (35) are connected via a threaded barrel (36).

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