Device for detecting conductivity of lightning protection wire of offshore wind turbine generator blade

Abstract

The utility model relates to the field of wind power generation, in particular to a device for detecting the conductivity of a lightning protection lead of an offshore wind turbine generator blade, which comprises a connecting rod, a rotating wheel and an overturning clamping arm, which are respectively arranged at two ends of the connecting rod; one end of the pull rope is wound on the rotating wheel, and the other end is connected with the turnover clamping arm; the detection head is arranged on the overturning clamping arm, and the detection head is connected with a measuring instrument through a measuring wire; when the rotating wheel rotates, the pull rope pulls the turnover clamping arm to clamp the blade, so that the detection head is in contact with a lightning arrester of the blade. The utility model provides a more efficient and more portable detection device aiming at the conditions of higher safety risk and economic cost existing at present, an operator can complete equipment assembly and test on a tower footing platform without ship cooperation, and an engine room does not need the operator, so that the operation risk of the operator is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation, and in particular to a device for detecting the conductivity of lightning protection wires for offshore wind turbine blades. Background Technology

[0002] Currently, with the increasing power and blade length of offshore wind turbines, the challenge of lightning strikes on the blades has become more prominent. The effectiveness of lightning protection for offshore wind turbine blades hinges on the continuity of the pre-embedded lightning protection wires within the blades. When a blade is struck by induced lightning, the current flows through the lightning arrester at the blade tip (which is connected to the pre-embedded wires) and then through the pre-embedded wires within the blade to the turbine's grounding grid, thus preventing damage to the blades.

[0003] Currently, the continuity testing of lightning protection wires for offshore wind turbine blades still relies on onshore methods, specifically using a "manual aerial work platform." Personnel are transported from the nacelle or tower base to the blade tip via a suspended basket or net, and then connected to the blade tip lightning arrester and blade root via wires and instruments to measure the continuity of the embedded cables. This method is time-consuming; testing a single turbine blade requires personnel to repeatedly climb up and down, which is both time-consuming and labor-intensive. Furthermore, it places higher demands on personnel and portable equipment. In the event of gusts of wind, personnel may sway, posing a significant safety hazard.

[0004] Other lightning protection conductor testing devices, such as the Chinese utility model patent with application number CN202420813400.3 entitled "A Device for Detecting the Conductivity of Lightning Protection Wires on Wind Turbine Blades," primarily involve placing a net over the lightning rod at the blade tip and using a copper strip of the testing device to contact the blade. If the lightning rod is oxidized, the copper strip carries a needle that breaks through the oxide film on the surface of the lightning rod, or the oxide layer on the surface of the lightning rod is removed with sandpaper. The device is then connected to testing equipment for measurement. However, this device requires cooperation between the ship and engine room personnel to connect the tooling to the lightning rod at the blade tip. This process requires significant manpower and material resources and takes a long time. Gusts may cause the tooling to sway, further prolonging the connection time. This presents a significant inconvenience given the limited time available for offshore operations. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for detecting the conductivity of lightning protection wires for offshore wind turbine blades that is easy to operate, reduces operational risks, and has high measurement accuracy and efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a device for detecting the conductivity of lightning protection conductors for offshore wind turbine blades, comprising:

[0007] The connecting rod has a rotating wheel and a flipping clamp at each end;

[0008] The pull rope has one end wrapped around the rotating wheel and the other end connected to the flipping clamp arm;

[0009] The detection head is mounted on the flip-up clamp arm and is connected to the measuring instrument via a measuring wire.

[0010] When the wheel rotates, the pull rope pulls the flipping clamp arm to hold the blade, so that the detection head contacts the lightning rod on the blade.

[0011] Furthermore, the connecting rod includes two or more segmented rods connected in sequence, with adjacent segmented rods being screwed together.

[0012] Furthermore, a connecting reinforcement ring is provided at the connection point of the two segment rods.

[0013] Furthermore, the connecting rod is provided with a guide ring, which has a guide rope hole for the pull rope to pass through and a guide wire hole for the measuring wire to pass through.

[0014] Furthermore, a telescope is mounted on the connecting rod.

[0015] Furthermore, the connecting rod is provided with a mounting seat for mounting the rotating wheel, and the mounting seat is provided with a movable positioning pin. The rotating wheel is coaxially connected with the turntable, and the turntable is provided with positioning teeth. The movable positioning pin is used to engage the positioning teeth.

[0016] Furthermore, the flipping gripper includes grippers and a connector. Two grippers are symmetrically arranged on the connecting rod, and each gripper is equipped with a detection head. The two ends of the connector are connected to the two grippers respectively, and the middle part of the connector is connected to the pull rope.

[0017] Furthermore, the connector includes a base and an arc-shaped connecting piece. The base is connected to the connecting rod via an elastic element, and the base is connected to two grippers respectively via two arc-shaped connecting pieces.

[0018] Furthermore, the connecting rod is provided with a positioning shaft, both grippers are locked to the positioning shaft, and the arc-shaped connecting piece is provided with a sliding groove that is slidably connected to the positioning shaft.

[0019] Furthermore, the detection head is used to measure needle bolts.

[0020] The beneficial effects of this utility model are as follows: A device for testing the continuity of lightning protection conductors on offshore wind turbine blades involves a worker holding a connecting rod. When the rotating wheel is turned, the wheel rewinds the pull rope, which pulls the flip-over clamping arm to hold the blade. The detection head on the flip-over clamping arm contacts the lightning arrester on the blade. The detection head is connected to a measuring instrument via a measuring wire, allowing the instrument to perform continuity testing on the blade's lightning arrester. This utility model addresses the current safety risks and high economic costs by proposing a more efficient and portable testing device. The equipment can be assembled and tested by operators on the tower base platform, without the need for ship support, and no operators are required in the engine room, reducing operational risks. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a device used for testing the conductivity of lightning protection conductors on offshore wind turbine blades.

[0022] Figure 2 Another schematic diagram of a device used for testing the conductivity of lightning protection conductors for offshore wind turbine blades;

[0023] Label Explanation:

[0024] 1. Connecting rod; 11. Rotating wheel; 12. Tilting clamping arm; 121. Clamping jaw; 122. Connecting piece; 1221. Base; 1222. Arc-shaped connecting piece; 12221. Slide groove; 1223. Elastic element; 13. Segment rod body; 14. Connecting reinforcing ring; 15. Guide ring; 151. Rope hole; 152. Lead wire hole; 16. Telescope; 17. Mounting base; 171. Movable positioning pin; 18. Turntable; 181. Positioning tooth; 19. Positioning shaft; 2. Pull rope; 3. Detection head; 31. Measuring wire. Detailed Implementation

[0025] 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.

[0026] Please refer to Figures 1 to 2 As shown, this utility model discloses a device for testing the conductivity of lightning protection conductors for offshore wind turbine blades, comprising:

[0027] The connecting rod 1 has a rotating wheel 11 and a flipping clamping arm 12 at each end;

[0028] One end of the pull rope 2 is wrapped around the rotating wheel 11, and the other end is connected to the flipping clamp arm 12;

[0029] The detection head 3 is mounted on the flip-up clamp arm 12 and is connected to the measuring instrument via the measuring wire 31.

[0030] When the rotating wheel 11 rotates, the pull rope 2 pulls the flipping clamp arm 12 to clamp the blade, so that the detection head 3 contacts the lightning rod of the blade.

[0031] As described above, the beneficial effects of this utility model are as follows: A device for testing the conductivity of lightning protection conductors on offshore wind turbine blades involves a worker holding a connecting rod 1. When the rotating wheel 11 is turned, the wheel 11 winds up the pull rope 2, which pulls the flipping clamp arm 12 to clamp the blade. The detection head 3 on the flipping clamp arm 12 contacts the lightning arrester on the blade. The detection head 3 is connected to a measuring instrument via a measuring wire 31, allowing the instrument to perform conductivity testing on the blade's lightning arrester. This utility model addresses the current safety risks and high economic costs by proposing a more efficient and portable testing device. The equipment can be assembled and tested by operators on the tower base platform, without the need for ship support, and the engine room requires no operators, reducing operational risks.

[0032] In an optional embodiment, the connecting rod 1 includes two or more segment rods 13 connected in sequence, and adjacent two segment rods 13 are connected by threads.

[0033] As can be seen from the above description, the distance between the blade lightning rod and the base platform varies for different units. When the distance between the tower base platform and the blade tip lightning rod is insufficient, the distance can be adjusted by continuously increasing the number of segmented test connecting rods 1, which is applicable to different offshore units.

[0034] In an optional embodiment, the segmented test connecting rod 1 is made of carbon fiber, which ensures that the whole device is lightweight and strong. The segmented design makes the whole device easy to transport and carry.

[0035] In an optional embodiment, a connecting reinforcing ring 14 is provided at the connection point of the two segment rods 13.

[0036] As can be seen from the above description, each segmented connecting rod 1 is connected by a thread, supplemented by a connecting reinforcing ring 14 added to the outside of the connection to ensure the overall strength of the entire device.

[0037] In an optional embodiment, the connecting rod 1 is provided with a guide ring 15, and the guide ring 15 is provided with a rope hole 151 for the pull rope 2 to pass through and a lead wire hole 152 for the measuring wire 31 to pass through.

[0038] As can be seen from the above description, the guide ring 15 guides the actuator to pull the rope 2 and guides and positions the measuring wire 31, ensuring smooth movement of the guide wire and the wire and structural stability.

[0039] In an optional embodiment, a telescope 16 is provided on the connecting rod 1.

[0040] As can be seen from the above description, the tail is equipped with a telescope 16, which allows the operator to more accurately and intuitively observe whether the actuator is in good contact. It can also be used in conjunction with imaging equipment to record images and achieve accurate detection.

[0041] In an optional embodiment, the connecting rod 1 is provided with a mounting seat 17 for mounting the rotating wheel 11. The mounting seat 17 is provided with a movable positioning pin 171. The rotating wheel 11 is coaxially connected with the turntable 18. The turntable 18 is provided with positioning teeth 181. The movable positioning pin 171 is used to engage the positioning teeth 181.

[0042] As described above, the design of turntable 18 allows a single operator to complete the entire testing process. Turntable 18 rotates with wheel 11, and when it is in the appropriate position, it can be limited by a limit pin to ensure that wheel 11 will not rotate due to the operator releasing its grip.

[0043] In an optional embodiment, the flipping gripper 12 includes grippers 121 and connectors 122. The two grippers 121 are symmetrically arranged on the connecting rod 1. Each gripper 121 is provided with a detection head 3. The two ends of the connectors 122 are respectively connected to the two grippers 121, and the middle part of the connectors 122 is connected to the pull rope 2.

[0044] As can be seen from the above description, the steel wire is tightened by rotating the wheel 11, which drives the gripper 121 and the connector 122 to move. Specifically, the steel wire is connected to the actuator connector 122, and the connector 122 moves downward, thereby causing the gripper 121 to bend inward and fit against the blade lightning arrester.

[0045] In an optional embodiment, the connector 122 includes a base 1221 and an arc-shaped connecting piece 1222. The base 1221 is connected to the connecting rod 1 through an elastic member 1223, and the base 1221 is connected to two grippers 121 through two arc-shaped connecting pieces 1222 respectively.

[0046] As can be seen from the above description, after the test is completed, the limit pin is released, and the elastic element 1223 of the actuator will return the gripper 121 to its original position, realizing the overall portable operation.

[0047] In an optional embodiment, the connecting rod 1 is provided with a positioning shaft 19, and both grippers 121 are locked to the positioning shaft 19. The arc-shaped connecting piece 1222 is provided with a sliding groove 12221 that is slidably connected to the positioning shaft 19.

[0048] As can be seen from the above description, the positioning shaft 19 serves both to fix the gripper 121 and to guide the up-and-down movement of the arc-shaped connecting piece 1222.

[0049] In an optional embodiment, the detection head 3 is a measuring needle bolt.

[0050] As described above, the measuring pin bolt has a pointed head and is mounted on the actuator. A circular rubber pad is located in the center of the measuring pin bolt to prevent excessive pressure on the actuator, which could damage the mechanism. Test leads are connected to the tail of the measuring pin bolt, passing through guide coil 15 to the rod tail, and then to an external measuring instrument.

[0051] Please refer to Figures 1 to 2 As shown, Embodiment 1 of this utility model is: a device for detecting the conductivity of lightning protection conductors for offshore wind turbine blades, comprising:

[0052] The connecting rod 1 has a rotating wheel 11 and a flipping clamping arm 12 at each end;

[0053] The pull rope 2 has one end wrapped around the rotating wheel 11 and the other end connected to the flipping clamp arm 12. The pull rope 2 is made of steel wire.

[0054] The detection head 3 is mounted on the flip-up clamp arm 12 and is connected to the measuring instrument via the measuring wire 31.

[0055] When the rotating wheel 11 rotates, the pull rope 2 pulls the flipping clamp arm 12 to clamp the blade, so that the detection head 3 contacts the lightning rod of the blade.

[0056] The connecting rod 1 comprises two or more sequentially connected segment rods 13, with adjacent segment rods 13 connected by threads. A connecting reinforcing ring 14 is provided at the connection point of the two segment rods 13. The connecting rod 1 is provided with a guide ring 15, which has a rope hole 151 for the pull rope 2 to pass through and a lead wire hole 152 for the measuring wire 31 to pass through. A telescope 16 is provided on the connecting rod 1. The connecting rod 1 is provided with a mounting base 17 for mounting the rotating wheel 11, which has a movable positioning pin 171. The rotating wheel 11 is coaxially connected to a turntable 18, which has positioning teeth 181. The movable positioning pin 171 is used to engage the positioning teeth 181. The flip-over gripper arm 12 includes grippers 121 and a connector 122. Two grippers 121 are symmetrically arranged on the connecting rod 1. Each gripper 121 is equipped with a detection head 3. The two ends of the connector 122 are connected to the two grippers 121 respectively, and the middle of the connector 122 is connected to the pull rope 2. The connector 122 includes a base 1221 and an arc-shaped connecting piece 1222. The base 1221 is connected to the connecting rod 1 via an elastic element 1223, and the base 1221 is connected to the two grippers 121 respectively via two arc-shaped connecting pieces 1222. The elastic element 1223 is a return spring. Both the grippers 121 and the arc-shaped connecting pieces 1222 are made of steel. The connecting rod 1 has a positioning shaft 19, and both grippers 121 are locked to the positioning shaft 19. The arc-shaped connecting piece 1222 has a sliding groove 12221 that slides with the positioning shaft 19. The detection head 3 is a measuring needle bolt.

[0057] In summary, this utility model provides a device for testing the continuity of lightning protection conductors on offshore wind turbine blades. During use, the operator holds a connecting rod. When the rotating wheel is turned, it retracts the pull rope, which pulls the flip-over clamping arm to hold the blade. The detection head on the flip-over clamping arm contacts the blade's lightning arrester. The detection head is connected to a measuring instrument via a measuring wire, allowing for continuity testing of the blade's lightning arrester. This utility model addresses the current safety risks and high economic costs by proposing a more efficient and portable testing device. The equipment can be assembled and tested by operators on the tower base platform, without the need for ship support, and the engine room requires no operators, thus reducing operational risks.

[0058] 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 device for detecting the continuity of lightning protection conductors on offshore wind turbine blades, characterized in that, include: The connecting rod has a rotating wheel and a flipping clamp at each end; The pull rope has one end wrapped around the rotating wheel and the other end connected to the flipping clamp arm; The detection head is mounted on the flip-up clamp arm and is connected to the measuring instrument via a measuring wire. When the wheel rotates, the pull rope pulls the flipping clamp arm to hold the blade, so that the detection head contacts the lightning rod on the blade.

2. The device for offshore wind turbine blade lightning conductor continuity detection according to claim 1, characterized in that, The connecting rod consists of two or more segmented rods connected in sequence, with adjacent segmented rods connected by threads.

3. The apparatus for lightning conductor continuity detection for offshore wind turbine blades according to claim 2, characterized in that, A connecting reinforcement ring is provided at the connection point of the two segment rods.

4. The apparatus for offshore wind turbine blade lightning conductor continuity detection of claim 1, wherein, The connecting rod is equipped with a guide ring, which has a guide rope hole for the pull rope to pass through and a guide wire hole for the measuring wire to pass through.

5. The apparatus for offshore wind turbine blade lightning conductor continuity detection of claim 1, wherein, A telescope is mounted on the connecting rod.

6. The apparatus for offshore wind turbine blade lightning conductor continuity detection of claim 1, wherein, The connecting rod is equipped with a mounting base for mounting the rotating wheel. The mounting base is equipped with a movable positioning pin. The rotating wheel is coaxially connected to the turntable. The turntable is equipped with positioning teeth. The movable positioning pin is used to engage the positioning teeth.

7. The apparatus for offshore wind turbine blade lightning conductor continuity detection of claim 1, wherein, The flip-over gripper includes grippers and a connector. Two grippers are symmetrically arranged on the connecting rod. Each gripper is equipped with a detection head. The two ends of the connector are connected to the two grippers respectively, and the middle of the connector is connected to the pull rope.

8. The apparatus for lightning conductor continuity detection for offshore wind turbine blades of claim 7, wherein, The connector includes a base and an arc-shaped connecting piece. The base is connected to the connecting rod through an elastic element, and the base is connected to two grippers respectively through two arc-shaped connecting pieces.

9. The apparatus for offshore wind turbine blade lightning conductor continuity detection of claim 8, wherein, The connecting rod is equipped with a positioning shaft, and both grippers are locked to the positioning shaft. The arc-shaped connecting piece is equipped with a sliding groove that is slidably connected to the positioning shaft.

10. The apparatus for offshore wind turbine blade lightning conductor continuity detection of claim 1, wherein, The detection head is used to measure needle bolts.

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