Novel lightning protection wire conduction detection device

Abstract

A novel lightning protection wire conduction detection device is applied to lightning protection detection of wind driven generator blades and comprises a polishing assembly and a detection assembly. The grinding assembly comprises a first frame and at least two elastic grinding pieces, the elastic grinding pieces are arranged in the first frame in parallel, and the distance between the adjacent elastic grinding pieces is smaller than the thickness of the blade. The detection assembly comprises a second frame and at least two elastic conductive parts, the elastic conductive parts are arranged in the second frame in parallel, and the distance between the adjacent elastic conductive parts is smaller than the thickness of the blade; and the first frame and the second frame are flexibly connected. According to the utility model, the polishing assembly and the detection assembly are arranged, and the polishing assembly can remove an oxide layer on the surface of the blade tip lightning arrester, so that the accuracy of subsequent detection is ensured, and misjudgment caused by the influence of the oxide layer on electric contact is avoided; in addition, the elastic conductive part of the detection assembly can be fully attached to the blade, the stability of detection conduction is improved, and the accuracy of a measurement result is ensured.

Description

Technical Field

[0001] This utility model relates to the field of wind power, and in particular to a novel lightning protection wire continuity detection device. Background Technology

[0002] Currently, the inspection of lightning protection conductors on turbine blades mainly relies on manual operation. Personnel must ride in a suspended basket or net, moving from the nacelle or tower base to the blade tip or tower tip. Then, using conductors and instruments, they connect the blade tip and the blade root to measure the conductivity of the pre-embedded cables. However, this inspection method has the following problems: First, the entire measurement cycle is long, requiring personnel to climb repeatedly for each turbine blade inspection, which is time-consuming and labor-intensive. Second, it places high demands on the operators and portable equipment, especially in gusts of wind, where personnel are prone to swaying, posing a serious safety hazard.

[0003] Furthermore, some other detection methods also have limitations. For example, a detection method disclosed in patent CN222121686U involves using a net to cover the lightning arrester portion at the tip of a blade, allowing the copper strip of the detection device to contact the blade. If the surface of the lightning arrester is oxidized, the needle carried on the copper strip of the device can pierce the oxide film, thereby contacting the blade tip surface, and then connecting to the test leads and instruments to achieve measurement. However, this method relies on needle-type contact, which has relatively weak contact force and may not completely destroy the oxide film, leading to inaccurate measurement results and affecting practical application effectiveness. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a new type of lightning protection wire continuity detection device to solve the problems of high difficulty in manual operation and inaccurate test results.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A novel lightning protection wire continuity detection device, applied to lightning protection detection of wind turbine blades, includes a grinding component and a detection component;

[0007] The polishing assembly includes a first frame and at least two elastic polishing elements, the elastic polishing elements being arranged parallel to each other within the first frame, and the distance between adjacent elastic polishing elements being less than the blade thickness.

[0008] The detection assembly includes a second frame and at least two elastic conductive elements, which are arranged parallel to each other within the second frame, and the spacing between adjacent elastic conductive elements is less than the blade thickness.

[0009] The first frame and the second frame are flexibly connected.

[0010] In some embodiments, a limiting component is also included, the limiting component comprising a third frame and a conductive mesh disposed within the third frame, the third frame being flexibly connected to the side of the second frame away from the first frame.

[0011] In some embodiments, the first frame, the second frame, and the third frame are all annular frames, and their diameters decrease sequentially from the first frame to the third frame.

[0012] In some embodiments, the number of elastic grinding elements is greater than two, and the elastic grinding elements are evenly distributed within the first frame at a preset spacing, the preset spacing being less than the blade thickness.

[0013] In some embodiments, the elastic conductive element and the conductive mesh are electrically connected.

[0014] In some embodiments, the first frame, the second frame, and the third frame are flexibly connected sequentially using a rope net.

[0015] In some embodiments, the resilient abrasive element includes a spring and sandpaper, the sandpaper being fitted onto the outer surface of the spring, and the spring being connected to the first frame.

[0016] In some embodiments, the polishing assembly further includes a camera disposed on the first frame and used to acquire images of the polishing state of the blade by the polishing assembly.

[0017] In some embodiments, the elastic conductive element is a copper wire, and the elastic conductive element is bound to the second frame.

[0018] In some embodiments, a lifting ring is also included, which is connected to the first frame or to the second frame.

[0019] The beneficial effects of this utility model are as follows: It provides a test device for lightning protection wire continuity. By passing the blade lightning rod through the space between two elastic grinding members in the first frame, the surface of the blade lightning rod will be pressed under the action of elastic force because the distance between the elastic grinding members is smaller than the blade thickness. Thus, the oxide layer is ground off during the insertion of the blade lightning rod. Subsequently, the blade lightning rod passes through the second frame, and the elastic conductive member in the second frame contacts the ground blade lightning rod surface. The continuity of the blade lightning rod is tested by using the elastic conductive member. There is no need for manual repeated climbing of wind power equipment. At the same time, the grinding of the grinding components avoids interference of the oxide layer on the test results, thus improving the accuracy of the test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a lightning protection wire continuity testing device according to an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0022] Label Explanation:

[0023] 1. Grinding assembly; 11. First frame; 12. Elastic grinding component; 121. Spring; 122. Sandpaper; 13. Camera component; 2. Detection assembly; 21. Second frame; 22. Elastic conductive component; 3. Limiting assembly; 31. Third frame; 32. Conductive mesh; 4. Lifting ring; 5. Cable. Detailed Implementation

[0024] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0025] Please refer to Figure 1 as well as Figure 2 A novel lightning protection wire continuity detection device is used for lightning protection detection of wind turbine blades, including a grinding component 1 and a detection component 2.

[0026] The polishing assembly 1 includes a first frame 11 and at least two elastic polishing elements 12. The elastic polishing elements 12 are arranged parallel to each other within the first frame 11, and the distance between adjacent elastic polishing elements 12 is less than the blade thickness.

[0027] The detection component 2 includes a second frame 21 and at least two elastic conductive elements 22. The elastic conductive elements 22 are arranged parallel to each other within the second frame 21, and the distance between adjacent elastic conductive elements 22 is less than the thickness of the blade.

[0028] The first frame 11 and the second frame 21 are flexibly connected.

[0029] As described above, the beneficial effects of this utility model are as follows: It provides a lightning protection wire continuity testing device, which, by setting up a grinding component 1 and a detection component 2, makes the lightning protection testing of wind turbine blades more efficient and reliable. The grinding component 1 can remove the oxide layer on the surface of the blade tip lightning arrester, thereby ensuring the accuracy of subsequent testing and avoiding misjudgments caused by the oxide layer affecting electrical contact. In addition, the elastic conductive element 22 of the detection component 2 can fully fit the blade, improving the stability of the detection continuity and ensuring the accuracy of the measurement results. The device adopts a flexible connection, which allows the device to adapt to blades of different sizes and is more convenient to use, reducing the burden of manual operation and improving testing efficiency and safety. For example, in a specific implementation, the elastic grinding element 12 can adopt a spring 121 structure, combined with sandpaper 122, to ensure that the oxide layer can be fully removed when the blade is inserted, while the detection component 2 can use copper wire as the elastic conductive element 22 to improve the stability of electrical contact.

[0030] In some embodiments, a limiting component 3 is also included, the limiting component 3 including a third frame 31 and a conductive mesh 32, the conductive mesh 32 being disposed within the third frame 31, the third frame 31 being flexibly connected to the side of the second frame 21 away from the first frame 11.

[0031] As described above, the limiting component 3 effectively prevents the blade from being inserted too deeply during the detection process, thus avoiding damage to the blade surface due to excessive friction. It also ensures the device is in the optimal detection position, improving measurement accuracy. The addition of the conductive mesh 32 not only provides physical limiting but also further enhances the contact area between the blade and the detection device, improving the reliability of conductivity. Furthermore, the flexible connection between the third frame 31 and the second frame 21 allows the device to adapt to different blade sizes during operation and enhances stability. In a specific implementation, the third frame 31 can adopt an aluminum alloy ring structure, with its internal conductive mesh 32 composed of multiple copper strips, ensuring multi-point contact between the blade and the device, thus improving detection accuracy.

[0032] Preferably, the third frame is also part of the detection component, and its conductive mesh and the elastic conductive element on the second frame form a double detection guarantee to jointly detect whether the lightning protection wire of the blade is conductive; at the same time, both the second and third frames are adjustable to adapt to lightning arresters of different blade sizes, improving the versatility of the device.

[0033] In some embodiments, the first frame 11, the second frame 21 and the third frame 31 are all annular frames and their diameters decrease sequentially from the first frame 11 to the third frame 31.

[0034] As described above, the diameters of the first, second, and third frames 31 decrease sequentially, allowing the device to better conform to the shape of the blade, thus improving its stability and measurement accuracy. Because the blade width gradually increases, this structural design ensures smooth positioning of the device on the blade while reducing equipment sway and improving safety. In practical implementation, this annular structure can be made of aluminum alloy to ensure structural strength, and a reasonable diameter design allows the device to firmly conform to the blade, extending its service life.

[0035] In some embodiments, the number of elastic grinding elements 12 is greater than two, and the elastic grinding elements 12 are evenly distributed within the first frame 11 at a preset spacing, the preset spacing being less than the blade thickness.

[0036] As described above, the number and distribution of the elastic grinding elements 12 are precisely designed to ensure that the blade can be inserted into the equipment from any position and achieve a uniform grinding effect. This design not only improves the smoothness of operation but also reduces the reliance on precise manual operation, thereby improving the convenience of inspection. The evenly distributed elastic grinding elements 12 ensure that the oxide layer is fully removed from all parts of the blade surface, thus guaranteeing the reliability of electrical contact. In specific implementation, the elastic grinding elements 12 can be composed of multiple sets of springs 121 and sandpaper 122, and the clamping force of the springs 121 ensures that the sandpaper 122 is in close contact with the blade surface, enhancing the deoxidation effect.

[0037] In some embodiments, the elastic conductive element 22 and the conductive mesh 32 are electrically connected.

[0038] As described above, by electrically connecting the elastic conductive element 22 to the conductive mesh 32, this scheme simplifies the internal circuit design of the equipment and makes continuity detection more efficient. Since the entire detection device forms a conductive path, resistance loss is reduced, and the continuity effect is improved. This design also reduces the complexity of additional wiring, making the equipment easier to maintain and adjust. In specific implementations, copper wires can be used as the elastic conductive element 22 and connected to the conductive mesh 32 by welding or binding, thereby ensuring a stable electrical connection and improving measurement accuracy. Preferably, the elastic conductive element 22 and the conductive mesh 32 are electrically connected using a cable 5, and the cable 5 is guided to the first frame 11; that is, the function of the cable 5 is to connect the relevant detection components in the second and third frames, and to connect the external lightning arrester, detection components, and the instrument cables used for testing, forming a measurement circuit.

[0039] In some embodiments, the first frame 11, the second frame 21 and the third frame 31 are flexibly connected in sequence using rope netting.

[0040] As described above, the use of rope netting for flexible connections allows the device to adapt flexibly to blades of different sizes and shapes during operation, while enhancing its wind resistance and stability. This design improves the device's durability and reduces the interference of wind on the test results, thereby enhancing safety. Furthermore, the flexible connection method facilitates disassembly and adjustment, making the device easier to maintain and carry. In practical implementation, high-strength nylon rope netting with strong weather resistance can be used to ensure stable performance even in harsh environments, while also enhancing the overall wind resistance of the device.

[0041] In some embodiments, the elastic abrasive 12 includes a spring 121 and sandpaper 122, the sandpaper 122 being sleeved on the outer surface of the spring 121, and the spring 121 being connected to the first frame 11.

[0042] As described above, the elastic grinding component 12 employs a combination of spring 121 and sandpaper 122, enabling it to adapt to blades of varying thicknesses and provide stable clamping force during grinding. This design ensures effective removal of the oxide layer after blade insertion, enhances the conductivity of the metal surface, and reduces the risk of blade surface damage. In practical implementation, a high-elasticity steel spring 121 can be used to guarantee a stable clamping effect, and in conjunction with wear-resistant sandpaper 122, improve deoxidation efficiency and extend the service life of the device.

[0043] In some embodiments, the polishing assembly 1 further includes a camera 13, which is disposed on the first frame 11 and used to acquire images of the polishing state of the blade by the polishing assembly 1.

[0044] As described above, adding a camera 13 to the grinding assembly 1 allows operators to monitor the grinding status of the blades in real time and make necessary adjustments, such as repeating the blade insertion process if grinding is inadequate. This design improves the visualization of the inspection, ensuring that problems can be identified and corrected promptly during operation, thus improving the reliability of the inspection. Furthermore, the camera's recording function facilitates traceability of the inspection process, thereby improving quality management. In practical implementation, a wireless high-definition camera can be used, and real-time images can be sent to a monitoring terminal via remote transmission technology, allowing operators to monitor and make adjustments from a safe location, improving operational safety.

[0045] In some embodiments, the elastic conductive element 22 is a copper wire, and the elastic conductive element 22 is bound to the second frame 21.

[0046] As described above, the elastic conductive element 22 is made of copper wire and bound to the second frame 21, allowing the device to be adjusted in position according to different blade thicknesses, thus improving the flexibility of the detection. This structural design enables the detection component 2 to adapt to blades of different specifications, ensuring stability and accuracy during measurement. Furthermore, the elastic properties of the copper wire allow it to fit tightly against the blade surface, further enhancing the electrical contact effect. In specific implementations, multi-strand copper wire can be used as the elastic conductive element 22, and an adjustable binding method can be employed to adapt to different blade models, improving the applicability of the device.

[0047] In some embodiments, a lifting ring 4 is also included, which is connected to the first frame 11 or to the second frame 21.

[0048] As described above, the addition of lifting rings 4 to the device allows for secure anchoring and operation via ropes, improving ease of use. The lifting rings 4 enable operators to remotely control the equipment from the engine room or tower base, reducing the risks of climbing and working at heights, and enhancing safety. Furthermore, the design of the lifting rings 4 makes the equipment easier to install and disassemble, improving testing efficiency. In practical implementation, high-strength stainless steel lifting rings 4 can be used in conjunction with wear-resistant ropes to ensure the stability of the equipment in complex environments and reduce operational risks.

[0049] In summary, this utility model provides a novel lightning protection wire continuity testing device specifically designed for lightning protection testing of wind turbine blades. The device employs a combined design of a grinding component and a testing component, achieving efficient deoxidation and precise continuity testing of the blade's lightning rod, thereby improving the accuracy and reliability of the testing. Compared with existing technologies, this utility model offers numerous advantages, effectively solving the problems of high manual workload, long testing cycles, and high safety hazards inherent in traditional testing methods, thus improving testing efficiency and ensuring the stability of measurement results.

[0050] First, the grinding assembly of this invention effectively removes the oxide layer from the surface of the blade tip lightning arrester, ensuring full exposure of the metal parts of the arrester and providing good contact conditions for subsequent continuity testing. The design of the elastic grinding component allows the blade, after being inserted into the device, to form a stable frictional force with the sandpaper under the clamping force of the spring, ensuring thorough removal of the oxide layer and improving the grinding effect. Simultaneously, the multi-point evenly distributed design of the elastic grinding component allows the blade to be inserted into the device from different positions for grinding, improving the convenience and smoothness of operation, reducing the requirement for precise manual operation, and thus improving the efficiency of the testing work.

[0051] Secondly, the detection component employs an elastic conductive element, combined with a conductive mesh in the limiting component, making continuity detection more stable and accurate. The elastic conductive element can tightly conform to the blade surface, ensuring stable electrical contact during measurement and improving detection reliability. Furthermore, the conductive mesh in the limiting component not only acts as a physical limit, preventing excessive blade insertion and damage to the blade surface, but also further increases the contact area between the blade and the detection device, optimizing the current transmission path and improving the continuity detection effect. Simultaneously, the electrical connection between the elastic conductive element and the conductive mesh simplifies internal circuit design, reduces resistance loss, and makes continuity detection more efficient and stable, avoiding measurement errors caused by poor contact in traditional detection equipment.

[0052] Furthermore, this invention employs a structural design where the first, second, and third frames are flexibly connected sequentially, enabling the device to adapt to blades of different sizes and shapes and improving its stability. In particular, the decreasing diameter design of the three frames allows the device to better conform to the blade shape, ensuring a high degree of matching between the detection device and the blade, thus improving measurement accuracy and the device's applicability. The flexible connection also allows the device to adapt to changes in wind conditions during operation, reducing the impact of wind on its stability and improving safety and durability.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A novel lightning protection wire continuity detection device, applied to lightning protection detection of wind turbine blades, characterized in that: Includes grinding components and inspection components; The polishing assembly includes a first frame and at least two elastic polishing elements, the elastic polishing elements being arranged parallel to each other within the first frame, and the distance between adjacent elastic polishing elements being less than the blade thickness. The detection assembly includes a second frame and at least two elastic conductive elements, which are arranged parallel to each other within the second frame, and the spacing between adjacent elastic conductive elements is less than the blade thickness. The first frame and the second frame are flexibly connected.

2. The novel lightning protection wire continuity detection device according to claim 1, characterized in that: It also includes a limiting component, which includes a third frame and a conductive mesh, the conductive mesh being disposed within the third frame, and the third frame being flexibly connected to the side of the second frame away from the first frame.

3. The novel lightning protection wire continuity detection device according to claim 2, characterized in that: The first frame, the second frame, and the third frame are all ring frames, and their diameters decrease sequentially from the first frame to the third frame.

4. The novel lightning protection wire continuity detection device according to claim 3, characterized in that: The number of elastic grinding elements is greater than two, and the elastic grinding elements are evenly distributed within the first frame at a preset distance, the preset distance being less than the blade thickness.

5. The novel lightning protection wire continuity detection device according to claim 2, characterized in that: The elastic conductive element and the conductive mesh are electrically connected.

6. The novel lightning protection wire continuity detection device according to claim 2, characterized in that: The first frame, the second frame, and the third frame are flexibly connected in sequence using rope netting.

7. The novel lightning protection wire continuity detection device according to claim 1, characterized in that: The elastic abrasive component includes a spring and sandpaper, with the sandpaper fitted onto the outer surface of the spring, and the spring connected to the first frame.

8. The novel lightning protection wire continuity detection device according to claim 1, characterized in that: The polishing assembly also includes a camera, which is disposed on the first frame and used to acquire images of the polishing state of the blade by the polishing assembly.

9. The novel lightning protection wire continuity detection device according to claim 1, characterized in that: The elastic conductive element is a copper wire, and the elastic conductive element is bound to the second frame.

10. A novel lightning protection wire continuity detection device according to claim 1, characterized in that: It also includes lifting rings, which are connected to the first frame or the second frame.

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