Wind power blade tip lightning arrester

Abstract

The utility model discloses a wind power blade tip lightning arrester which comprises a protective shell, an insulating layer is fixedly installed on the inner wall of the protective shell, four threaded holes are formed in the back face of the protective shell, the inner wall of each threaded hole is in threaded connection with a threaded rod, one end of each threaded rod is fixedly provided with a limiting rotary knob, and the other end of each threaded rod is fixedly provided with a threaded rod. Two strip-shaped blocks are fixedly installed on the back face of the protective shell, sliding grooves are formed in the side faces, close to each other, of the two strip-shaped blocks, and the inner walls of the two sliding grooves are jointly and slidably connected with a limiting plate. According to the device, a limiting knob is mounted at one end of each threaded rod, so that a worker can drive the threaded rods to rotate by rotating the limiting knobs, and the positions of the threaded rods can be adjusted when the worker rotates the limiting knobs through cooperation of the threaded rods and threaded holes; furthermore, the positions of the limiting block and the insulating pad can be adjusted, and a worker can adjust the position of the limiting plate through a push handle.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blade lightning protection, in particular to a wind turbine blade tip lightning protection device. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical energy and then converts mechanical energy into electrical energy. Wind turbine blades are one of the important components of a wind turbine. In order to prevent lightning from damaging wind turbine blades, lightning protection devices are usually required on the wind turbine blades.

[0003] However, most of the existing wind turbine blade tip lightning protection devices are fixed by bolts, which are not convenient for disassembly and maintenance, thereby easily reducing the practicality of the wind turbine blade tip lightning protection device. To this end, we propose a wind turbine blade tip lightning protection device to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a wind turbine blade tip lightning protection device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A wind turbine blade tip lightning protection device comprises a protective shell, an inner wall of which is fixedly installed an insulating layer, four threaded holes are provided on the back of the protective shell, a threaded rod is threadedly connected to the inner wall of each threaded hole, a limit knob is fixedly installed on one end of each threaded rod, two strip blocks are fixedly installed on the back of the protective shell, a sliding groove is provided on one side of the two strip blocks close to each other, the inner walls of the two sliding grooves are slidably connected to a limit plate, and a push handle is fixedly installed on the outer surface of the limit plate.

[0007] In a further embodiment, four through holes are formed on the inner wall of the insulating layer, and the other end of each of the threaded rods passes through the through hole and extends to the interior of the protective shell.

[0008] In a further embodiment, a limit block is fixedly mounted on one end of each of the threaded rods, and an insulating pad is fixedly mounted on the front side of each of the limit blocks.

[0009] In a further embodiment, a mounting hole is provided on the right side surface of the protective shell, and a lightning rod is fixedly installed on the inner wall of the mounting hole.

[0010] In a further embodiment, a wire passing hole is provided on the front of the protective shell, a wire is fixedly installed on the outer surface of the left end of the lightning rod, and one end of the wire passes through the wire passing hole and extends to the outside of the protective shell.

[0011] In a further embodiment, a plurality of equally spaced stoppers are fixedly mounted on the front side of the protective housing, and one end of the wire passes through the inner circles of the plurality of stoppers in sequence.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device installs a limit knob at one end of each threaded rod, so that the staff can drive the threaded rod to rotate by turning the limit knob, and the threaded rod cooperates with the threaded hole, so that the staff can adjust the position of the threaded rod when turning the limit knob, and then the position of the limit block and the insulating pad can be adjusted, and the two ends of the limit plate are slidingly connected to the inner walls of the two slide grooves respectively, so that the staff can adjust the position of the limit plate by pushing the handle, and the limit plate has a limiting effect on the four limit knobs. When the device needs to be repaired, the staff only needs to remove the limit plate and turn the four limit knobs to remove the device from the tip of the wind turbine blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the front view of the wind turbine blade tip lightning protection device.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the rear view of the wind turbine blade tip lightning protection device.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the side view of the lightning protection device at the tip of a wind turbine blade.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the front cross-section of the wind turbine blade tip lightning protection device.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the side section view of the wind turbine blade tip lightning protection device.

[0019] In the figure: 1. wire; 2. limiter; 3. protective shell; 4. wire hole; 5. lightning rod; 6. push handle; 7. bar block; 8. limit plate; 9. insulation layer; 10. insulation pad; 11. slide groove; 12. limit knob; 13. threaded rod; 14. limit block; 15. mounting hole; 16. through hole; 17. threaded hole. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5In the utility model, a wind turbine blade tip lightning protection device comprises a protective shell 3, an insulating layer 9 is fixedly installed on the inner wall of the protective shell 3, four threaded holes 17 are provided on the back of the protective shell 3, a threaded rod 13 is threadedly connected to the inner wall of each threaded hole 17, and a limit knob 12 is fixedly installed on one end of each threaded rod 13, and two strip blocks 7 are fixedly installed on the back of the protective shell 3, and a slide groove 11 is provided on the side of the two strip blocks 7 close to each other, and the inner walls of the two slide grooves 11 are slidably connected to the limit plate 8 together, and a push handle 6 is fixedly installed on the outer surface of the limit plate 8, and the staff can drive the threaded rod 13 to rotate by rotating the limit knob 12. By installing the push handle 6 on the outer surface of the limit plate 8, the staff can drive the limit plate 8 to slide in the two slide grooves 11 by pushing the push handle 6, and the limit plate 8 can limit the four limit knobs 12.

[0024] Four through holes 16 are provided on the inner wall of the insulating layer 9, and the other end of each threaded rod 13 passes through the through hole 16 and extends to the interior of the protective shell 3. A limit block 14 is fixedly installed at one end of each threaded rod 13, and an insulating pad 10 is fixedly installed on the front of each limit block 14. Each threaded rod 13 can drive the limit block 14 when it moves, and the four limit blocks 14 can jointly fix the tip of the wind turbine blade inside the protective shell 3. The insulating layer 9 and the four insulating pads 10 can play an insulating role, thereby preventing the lightning rod 5 from being struck by lightning and transmitting the current to the tip of the wind turbine blade through the protective shell 3 or the four threaded rods 13, thereby preventing the tip of the wind turbine blade from being pierced by lightning.

[0025] A mounting hole 15 is provided on the right side of the protective shell 3, and a lightning rod 5 is fixedly installed on the inner wall of the mounting hole 15. By fixing the left end of the lightning rod 5 to the inner wall of the mounting hole 15 provided on the right side of the protective shell 3, the lightning rod 5 can be firmly assembled with the protective shell 3. A wire passing hole 4 is provided on the front side of the protective shell 3, and a conductor 1 is fixedly installed on the outer surface of the left end of the lightning rod 5. One end of the conductor 1 passes through the wire passing hole 4 and extends to the outside of the protective shell 3. By passing one end of the conductor 1 through the wire passing hole 4 and fixing it to the left end of the lightning rod 5, when the lightning rod 5 is struck by lightning, The conductor 1 can conduct energy to the ground, thereby providing protection for the tip of the wind turbine blade. By setting the connection between the conductor 1 and the lightning rod 5 inside the protective shell 3, the connection can be effectively protected. A number of equally spaced limiters 2 are fixedly installed on the front of the protective shell 3. One end of the conductor 1 passes through the inner circles of multiple limiters 2 in sequence. By installing multiple limiters 2 on the front of the protective shell 3 and passing the conductor 1 through the inner circles of multiple limiters 2 in sequence, the conductor 1 can be firmly fixed on the outer surface of the protective shell 3, and the limiter 2 plays a limiting role on the conductor 1.

[0026] The working principle of the utility model is:

[0027] When the device needs to be disassembled for maintenance, the staff first pushes the push handle 6 to drive the limit plate 8 to slide out of the two slide grooves 11, and then the staff rotates the four limit knobs 12 in turn. The rotation of each limit knob 12 drives the threaded rod 13 to rotate, and the rotation of each threaded rod 13 drives the limit block 14 and the insulating pad 10 to rotate and move. When the four insulating pads 10 leave the outer surface of the tip of the wind turbine blade, the staff can remove the device from the tip of the wind turbine blade for maintenance.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wind turbine blade tip lightning protection device, characterized in that: The protective shell (3) comprises a protective shell (3), the inner wall of which is fixedly provided with an insulating layer (9), the back of which is provided with four threaded holes (17), the inner wall of each threaded hole (17) is threadedly connected with a threaded rod (13), one end of each threaded rod (13) is fixedly provided with a limit knob (12), the back of the protective shell (3) is fixedly provided with two strip blocks (7), the side surfaces of the two strip blocks (7) close to each other are provided with a sliding groove (11), the inner walls of the two sliding grooves (11) are slidably connected with a limit plate (8), and the outer surface of the limit plate (8) is fixedly provided with a push handle (6).

2. A wind turbine blade tip lightning protection device according to claim 1, characterized in that: Four through holes (16) are formed on the inner wall of the insulating layer (9), and the other end of each of the threaded rods (13) passes through the through hole (16) and extends to the interior of the protective housing (3).

3. A wind turbine blade tip lightning protection device according to claim 1, characterized in that: A limiting block (14) is fixedly mounted on one end of each threaded rod (13), and an insulating pad (10) is fixedly mounted on the front side of each limiting block (14).

4. A wind turbine blade tip lightning protection device according to claim 1, characterized in that: A mounting hole (15) is provided on the right side surface of the protective shell (3), and a lightning rod (5) is fixedly mounted on the inner wall of the mounting hole (15).

5. A wind turbine blade tip lightning protection device according to claim 4, characterized in that: The front of the protective housing (3) is provided with a wire hole (4), and a wire (1) is fixedly mounted on the outer surface of the left end of the lightning rod (5), and one end of the wire (1) passes through the wire hole (4) and extends to the outside of the protective housing (3).

6. A wind turbine blade tip lightning protection device according to claim 5, characterized in that: A plurality of stoppers (2) arranged at equal distances are fixedly mounted on the front side of the protective housing (3), and one end of the wire (1) passes through the inner circles of the plurality of stoppers (2) in sequence.

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