Lightning protection grounding detection device of wind driven generator blade

Abstract

The utility model discloses a lightning protection grounding detection device of a wind driven generator blade, which comprises a base, a lifting rod, a clamping assembly, a polishing assembly and a measuring assembly, the lifting rod is connected to the base, the clamping assembly is arranged at the upper end of the lifting rod, and the polishing assembly and the measuring assembly are respectively detachably connected with the upper end of the lifting rod; the lifting rod is used for lifting the grinding assembly and the measuring assembly to be connected with a lightning arrester of the wind driven generator blade, the clamping assembly is used for being connected with the wind driven generator blade, the grinding assembly is used for grinding the surface of the lightning arrester, and the measuring assembly is used for detecting the grounding resistance value of the lightning arrester. According to the embodiment of the utility model, the grinding assembly and the measuring assembly can be respectively connected with the lightning arrester of the wind driven generator blade through the arranged lifting rod, and the clamping assembly is arranged to fix the lifting rod and the lightning arrester, so that the lightning arrester can be stably ground and measured and is not easily influenced by the external environment; and the operation threshold and the detection cost are lower.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to a lightning protection grounding detection device for wind generator blades. Background Art

[0002] Wind turbines operate in harsh environments. The blades of wind turbines are located at high altitudes and are easily struck by lightning during thunderstorms. Therefore, lightning arresters are usually installed on the blades of wind turbines. In addition, the lightning arrester wires of wind turbines need to be regularly inspected for broken wires every year.

[0003] In the prior art, for example, the invention patent with announcement (publication) number CN1125527A discloses a wind turbine blade lightning protection grounding test device based on a drone, comprising a drone, a robotic arm arranged on the bottom of the drone, an adsorption device arranged on the drone and the robotic arm, a water spraying device arranged on the drone and the robotic arm, and a controller. The adsorption device is connected to a wire for grounding testing, and the controller is respectively connected to the drone, the robotic arm, the adsorption device, and the water spraying device for signals.

[0004] This solution uses drones to replace workers in high-altitude operations. However, this solution has high requirements for workers and testing equipment, such as the need for professional licensed drone pilots to perform operations and professional drone equipment, resulting in high testing costs. In addition, drones are easily affected by the external environment, such as being out of control due to wind and causing collision damage. Utility Model Content

[0005] In view of this, the utility model provides a lightning protection and grounding detection device for wind turbine blades, which is used to solve the problem in the prior art of using drones to replace workers for high-altitude operations, which is costly and easily affected by external environmental interference.

[0006] To achieve one, part, or all of the above-mentioned objectives or other objectives, the present invention provides: a lightning protection and grounding detection device for a wind turbine blade, comprising: a base, a lifting rod, a clamping assembly, a grinding assembly, and a measuring assembly, wherein the lifting rod is connected to the base, the clamping assembly is disposed at the upper end of the lifting rod, and the grinding assembly and the measuring assembly are respectively detachably connected to the upper end of the lifting rod;

[0007] The lifting rod is used to lift the grinding assembly and the measuring assembly to connect to the lightning rod of the wind turbine blade, the clamping assembly is used to connect to the wind turbine blade, the grinding assembly is used to grind the surface of the lightning rod, and the measuring assembly is used to detect the grounding resistance value of the lightning rod.

[0008] Preferably, a quick-release fixing clamp and a wireless remote sensing camera are rotatably provided on the upper end of the lifting rod, and the quick-release fixing clamp can be connected to the polishing component and the measuring component respectively.

[0009] Preferably, the measuring assembly includes a detection contact, a measuring lead and a measuring instrument. The detection contact is mounted on the quick-release fixing clamp and is used to contact the lightning receptor. The detection contact is electrically connected to the measuring instrument through the measuring lead.

[0010] Preferably, the detection contact is a conductive contact, and the conductive contact is mounted on a telescopic base, and the telescopic base can be connected to the quick-release fixing clip.

[0011] Preferably, the detection contact is a conductive contact net, the conductive contact net is installed on a support cover, and the support cover can be connected to the quick-release fixing clip.

[0012] Preferably, the grinding assembly includes a grinding motor, a grinding disc clamp and a grinding head, the grinding head is detachably mounted on the grinding disc clamp, the grinding disc clamp is connected to the grinding motor, and the grinding motor is connectable to the quick-release fixing clamp.

[0013] Preferably, the clamping assembly includes two groups of mechanical arms and protective clamps, the rear ends of the mechanical arms are connected to the lifting rods, and the front ends of the mechanical arms are connected to the protective clamps.

[0014] Preferably, the two retaining clips are arranged opposite to each other and are in a bracket shape.

[0015] Preferably, the lifting rod is connected to a plurality of windproof ropes in different directions.

[0016] Preferably, the base is a fixed platform, a movable platform or a tripod support frame.

[0017] The implementation of the present invention will have the following beneficial effects:

[0018] After adopting the above-mentioned lightning protection and grounding detection device for wind turbine blades, the grinding assembly and the measuring assembly can be respectively sent to the lightning rod connected to the wind turbine blade through the provided lifting rod, and a clamping assembly is provided to fix the lifting rod and the lightning rod. The lightning rod can be stably ground and measured, is not easily affected by the external environment, and has lower operating thresholds and detection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] in:

[0021] Figure 1 This is a schematic diagram of the overall structure of the lightning protection and grounding detection device for wind turbine blades proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of the lightning protection and grounding detection device for wind turbine blades proposed by the present invention in use;

[0023] Figure 3 This is a schematic diagram of the partial structure of the lightning protection grounding detection device for wind turbine blades proposed in this utility model in use. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the partial structure of the lightning protection grounding detection device for wind turbine blades proposed in this utility model in use. Figure 2 ;

[0025] Figure 5 This is a partial structural diagram of the lightning protection grounding detection device for wind turbine blades proposed in this utility model. Figure 1 ;

[0026] Figure 6 This is a partial structural diagram of the lightning protection grounding detection device for wind turbine blades proposed in this utility model. Figure 2 .

[0027] Figure numerals: 10, base; 20, lifting rod; 21, quick-release fixing clamp; 22, wireless remote sensing camera; 23, windproof rope; 30, clamping assembly; 31, robotic arm; 32, protective clamp; 40, grinding assembly; 41, grinding motor; 42, grinding disc clamp; 43, grinding head; 50, measuring assembly; 51, detection contact; 511, conductive contact; 512, telescopic base; 513, conductive contact grid; 514, support cover; 52, measuring lead; 53, measuring instrument; a, blade; b, lightning arrester. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains; the terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this invention; the terms "including" and "having" and any variations thereof in the specification and claims of this invention and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" and the like in the specification and claims of this invention and the accompanying drawings are used to distinguish different objects, not to describe a specific order.

[0029] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] like Figure 1-6 The following are examples provided by the present invention.

[0032] An embodiment of the present utility model provides a lightning protection and grounding detection device for a wind turbine blade, comprising: a base 10, a lifting rod 20, a clamping assembly 30, a grinding assembly 40 and a measuring assembly 50, wherein the lifting rod 20 is vertically connected to the base 10, the clamping assembly 30 is arranged at the upper end of the lifting rod 20, and the grinding assembly 40 and the measuring assembly 50 are respectively detachably connected to the upper end of the lifting rod 20; the lifting rod 20 is used to lift the grinding assembly 40 and the measuring assembly 50 to connect to the lightning rod b on the blade a of the wind turbine, the clamping assembly 30 is used to connect to the blade a of the wind turbine, the grinding assembly 40 is used to grind the surface of the lightning rod b, and the measuring assembly 50 is used to detect the grounding resistance value of the lightning rod b. When performing lightning protection and grounding testing on each blade a of the wind turbine, the blade a of the wind turbine is first adjusted at a Y-shaped angle, and then a laser is used on the ground to vertically locate and measure the distance of the blade tip facing downward. The staff installs and fixes the base 10 according to the measured vertical landing point and height of the blade tip, and installs the grinding assembly 40 to the upper end of the lifting rod 20, and then pulls up and extends the lifting rod 20 to the corresponding height of the blade tip of the blade a to be tested. The lifting rod 20 can be selected as a multi-section and detachable assembly type, which can be manually raised or lowered electrically. The length of the lifting rod 20 can be selected according to actual conditions, and is easy to carry and disassemble. After the lifting rod 20 is extended to a specified height, the clamping assembly 30 is controlled to mate with the tip of blade a, clamping the blade tip and assisting in maintaining the stability of the upper end of the lifting rod 20. The polishing assembly 40 is then activated to rotate and polish the lightning receptor b on the blade tip. After the metal oxide layer on the surface of the lightning receptor b is polished cleanly, the lifting rod 20 is retracted and the polishing assembly 40 is removed. The measuring assembly 50 is then installed on the upper end of the lifting rod 20. The lifting rod 20 is again raised to mate with the clamping assembly 30 on the tip of blade a. The measuring assembly 50 is then brought into contact with the lightning receptor b to complete the test. After the above-mentioned lightning protection and grounding test device for wind turbine blades is adopted, the lifting rod 20 can be used to respectively deliver the polishing assembly 40 and the measuring assembly 50 to the lightning receptor b on the wind turbine blade a, and the clamping assembly 30 is provided to fix the lifting rod 20 and the lightning receptor b. This allows for stable polishing and measurement of the lightning receptor b, is less susceptible to external environmental influences, and has lower operating thresholds and test costs.

[0033] Furthermore, the upper end of the lifting rod 20 is rotatably provided with a quick-release fixing clamp 21 and a wireless remote sensing camera 22. The wireless remote sensing camera 22 is used to shoot the distance and azimuth deviation between the grinding component 40 and the measuring component 50 and the blade tip of the wind turbine blade a in real time, and can wirelessly transmit the image to the receiving end on the ground (such as mobile display devices such as mobile phones and tablet computers) over a long distance. The quick-release fixing clamp 21 can be quickly disassembled and connected to the grinding component 40 and the measuring component 50 respectively. The quick-release fixing clamp 21 can use a movable clamp or mechanical claw equipped with a remote control function on the market. The staff on the ground can check the connection status of the grinding component 40 and the measuring component 50 and the blade tip of the wind turbine blade a in real time and make adaptive adjustments.

[0034] Specifically, the measuring assembly 50 includes a detection contact 51, a measurement lead 52, and a measuring instrument 53. The detection contact 51 is mounted on the quick-release fixing clamp 21 and is used to contact the lightning receptor. The detection contact 51 is electrically connected to the measuring instrument 53 via the measurement lead 52. The length of the measurement lead 52 allows the measuring instrument 53 to be lowered to a height convenient for operator operation or inspection. Furthermore, since lightning receptors b are generally sharp or circular, the detection contact 51 can be configured in a variety of styles to facilitate adaptation. If the lightning receptor b is circular, the detection contact 51 can be configured as a conductive contact 511. The conductive contact 511 is mounted on a telescopic base 512, which is connected to the quick-release fixing clamp 21. Because the circular lightning receptor b is close to the side of the blade tip, it is tested on the side of the blade tip. The quick-release fixing clamp 21 can drive the telescopic base 512 to rotate up and down and left and right. The telescopic base 512 can drive the conductive contact 511 to extend and retract, making it easier for the conductive contact 511 to align with and contact the circular lightning receptor b. If the lightning receptor b is a sharp arc, the detection contact 51 can be a conductive contact mesh 513. The conductive contact mesh 513 is installed on a support cover 514, which can be connected to the quick-release fixing clamp 21. The conductive contact mesh 513 is a bare wire contact mesh woven from grounding wires, which can quickly connect and conduct with the lightning receptor b. Before performing the test, the staff needs to first confirm the type of lightning receptor at the tip of the wind turbine blade a and then select the corresponding type of detection contact 51.

[0035] Specifically, the grinding assembly 40 includes a grinding motor 41, a grinding disc clamp 42 and a grinding head 43. The grinding head 43 can be detachably mounted on the grinding disc clamp 42. The grinding disc clamp 42 is connected to the grinding motor 41. The grinding motor 41 can be connected to the quick-release fixing clamp 21. The quick-release fixing clamp 21 can drive the grinding motor 41 to rotate up and down and left and right, so that the grinding head 43 can perform all-round grinding on the surface of the flasher b. The grinding head 43 can be detachably connected to the grinding disc clamp 42, so as to facilitate the replacement of a new grinding head 43.

[0036] Specifically, the clamping assembly 30 includes two sets of mechanical arms 31 and retaining clamps 32. The rear ends of the mechanical arms 31 are connected to the lifting rod 20, and the front ends of the mechanical arms 31 are connected to the retaining clamps 32. The two retaining clamps 32 are arranged opposite each other and form a bracket shape. The mechanical arms 31 can drive the retaining clamps 32 to move toward each other, clamping the tip of the wind turbine blade a, assisting in stabilizing the upper end of the lifting rod 20 and ensuring that the grinding assembly 40 and the measuring assembly 50 do not easily shake during operation. In addition, when the retaining clamps 32 are docked and clamped with the wind turbine blade, their angles can be slightly adjusted according to the direction of the force applied, making the clamping relatively more stable.

[0037] Furthermore, the lifting rod 20 is connected to a plurality of windproof ropes 23 in different directions, typically in a group of three windproof ropes 23, evenly spaced 120 degrees apart, to stabilize the lifting rod 20. Depending on the height of the lifting rod 20, multiple groups of windproof ropes 23 may be provided to reduce the shaking of the lifting rod 20 due to external environmental influences. It should also be noted that to ensure that the windproof ropes 23 maintain the stability of the lifting rod 20 during the raising and lowering process, the windproof ropes 23 can be manually or motor-controlled to extend and retract according to the extension and retraction of the lifting rod 20, so that the windproof ropes 23 always maintain a certain tension and remain taut.

[0038] Furthermore, the base 10 can be selected as a fixed platform, a mobile platform or a three-pronged support frame. The fixed platform can adapt to a variety of complex terrains, and the mobile platform can be moved quickly, such as a small trailer platform or a truck rear platform. The three-pronged support frame is easy to carry and store. The three types are suitable for different situations and can be selected according to usage needs.

[0039] In addition, if the operation scene is on an offshore wind power generation platform and there is no suitable location to install the base 10, the lower end of the lifting rod 20 can be directly fixed on the supporting platform of the offshore wind turbine, and the upper end of the lifting rod 20 is tilted and extended to the bottom of the blade a of the wind turbine. The middle part of the lifting rod 20 is tied to the wind turbine tower base with a windproof rope 23, and the top of the lifting rod 20 is connected to the rope loop on the outside of the tower with a windproof rope 23, which can ensure the fixation of the lifting rod 20.

[0040] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A lightning protection grounding detection device for wind turbine blades, characterized in that: include: A base (10), a lifting rod (20), a clamping assembly (30), a grinding assembly (40) and a measuring assembly (50), wherein the lifting rod (20) is connected to the base (10), the clamping assembly (30) is arranged at the upper end of the lifting rod (20), and the grinding assembly (40) and the measuring assembly (50) are respectively detachably connected to the upper end of the lifting rod (20); The lifting rod (20) is used to lift the grinding assembly (40) and the measuring assembly (50) to connect to the lightning receptor of the wind turbine blade; the clamping assembly (30) is used to connect to the wind turbine blade; the grinding assembly (40) is used to grind the surface of the lightning receptor; and the measuring assembly (50) is used to detect the grounding resistance value of the lightning receptor.

2. The lightning protection grounding detection device for wind turbine blades according to claim 1, characterized in that: The upper end of the lifting rod (20) is rotatably provided with a quick-release fixing clamp (21) and a wireless remote sensing camera (22); the quick-release fixing clamp (21) can be connected to the polishing assembly (40) and the measuring assembly (50) respectively.

3. The lightning protection grounding detection device for wind turbine blades according to claim 2, characterized in that: The measuring assembly (50) comprises a detection contact (51), a measuring lead (52) and a measuring instrument (53); the detection contact (51) is mounted on the quick-release fixing clamp (21) and is used to contact the lightning receptor; the detection contact (51) is electrically connected to the measuring instrument (53) via the measuring lead (52).

4. The lightning protection grounding detection device for wind turbine blades according to claim 3, characterized in that: The detection contact (51) is a conductive contact (511), and the conductive contact (511) is mounted on a telescopic base (512). The telescopic base (512) can be connected to the quick-release fixing clamp (21).

5. The lightning protection grounding detection device for wind turbine blades according to claim 3, characterized in that: The detection contact (51) is a conductive contact net (513), and the conductive contact net (513) is installed on a support cover (514). The support cover (514) can be connected to the quick-release fixing clamp (21).

6. The lightning protection grounding detection device for wind turbine blades according to claim 2, characterized in that: The grinding assembly (40) comprises a grinding motor (41), a grinding plate clamp (42) and a grinding head (43); the grinding head (43) is detachably mounted on the grinding plate clamp (42); the grinding plate clamp (42) is connected to the grinding motor (41); and the grinding motor (41) is connectable to the quick-release fixing clamp (21).

7. The lightning protection grounding detection device for wind turbine blades according to claim 1, characterized in that: The clamping assembly (30) includes two groups of mechanical arms (31) and protective clamps (32), the rear ends of the mechanical arms (31) are connected to the lifting rod (20), and the front ends of the mechanical arms (31) are connected to the protective clamps (32).

8. The lightning protection grounding detection device for wind turbine blades according to claim 7, characterized in that: The two retaining clips (32) are arranged opposite to each other and are in a bracket shape.

9. The lightning protection grounding detection device for wind turbine blades according to claim 1, characterized in that: The lifting rod (20) is connected to a plurality of windproof ropes (23) in different directions.

10. The lightning protection and grounding detection device for wind turbine blades according to claim 1, characterized in that: The base (10) is a fixed platform, a mobile platform or a tripod support frame.

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