Device for detecting lightning protection conductivity of offshore wind turbine generator

Abstract

The utility model relates to a device for detecting lightning protection conductivity of an offshore wind turbine generator, which comprises a support rod and a resistance detector, one end of the support rod is connected with a tower drum, the other end of the support rod extends outwards and is provided with a conducting piece, and the conducting piece is positioned on the motion trail of a lightning arrester; and two terminals of the resistance detector are respectively connected with the conducting piece and the grounding wire through a first lead and a second lead. According to the utility model, the supporting rod extends out of the window in the tower drum, so that the conducting piece is positioned on the motion trail of the lightning arrester, and the resistance detector, the conducting piece, the blade, the cabin and the tower drum form a complete loop through the first lead and the second lead, so that the lightning protection conductivity detection of the blade of the wind turbine generator can be completed. The purposes of reducing the operation risk coefficient, shortening the detection period and improving the working efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation detection, in particular to a detection device for lightning protection conductivity of an offshore wind turbine. Background Art

[0002] A wind turbine mainly consists of a tower barrel, a nacelle, a wind wheel and blades. With the continuous development of wind power generation technology, the single-unit capacity of wind turbines has been continuously expanded, and the length of the blades of wind turbines has gradually increased. The length of conventional blades has reached more than 50m, the height of the tower barrel has reached more than 80m, and the overall height of the wind turbine has reached more than 120m. Such a height makes the wind turbine have a relatively high lightning risk during operation. In particular, the blades of the wind turbine are easily damaged by lightning strikes. To reduce the damage of lightning to the blades, a lightning arrester is usually installed at the top of the blade, and a grounding wire is built into the blade. One end of the grounding wire is connected to the lightning arrester, and the other end is grounded through the tower barrel. When the blade is struck by lightning, the lightning arrester and the grounding wire will directly conduct the lightning into the ground, which can effectively reduce the damage caused by lightning to the blade. However, with the extension of the service time, the grounding circuit formed by the lightning arrester and the grounding wire is prone to oxidation or fracture after being struck by lightning many times and does not have the conductive function. Therefore, it is necessary to regularly detect the lightning protection conductivity of the blades of the wind turbine.

[0003] The detection of the lightning protection conductivity of the blades of the wind turbine is usually carried out by manually testing with a person lifted into the air by a hanging basket. During the testing process, one wiring terminal of the resistance detector is first connected to the grounding wire, and then the other wiring terminal is manually lapped with the lightning arrester by a person. Not only is the operation risk coefficient high and it is affected by the wind speed, but also the detection period is relatively long. After each blade is detected, the hanging basket needs to be lowered to the ground before the blade can be rotated. When another blade rotates to the vertically downward position, the hanging basket is lifted into the air for testing until all three blades are detected. The process is very cumbersome and it is very troublesome to detect. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a detection device for lightning protection conductivity of an offshore wind turbine to solve the problems of troublesome detection of the lightning protection conductivity of the blades of the wind turbine and high operation risk coefficient in the prior art.

[0005] The utility model is realized through the following technical solutions:

[0006] A detection device for lightning protection conductivity of an offshore wind turbine includes a support rod and a resistance detector. One end of the support rod is connected to the tower barrel, and the other end extends outward and is provided with a conduction part for lapping with the lightning arrester. The conduction part is located on the movement track of the lightning arrester;

[0007] The two terminals of the resistance detector are respectively connected to the conducting member and the ground wire through the first wire and the second wire.

[0008] Furthermore, a sleeve is movably sleeved on the support rod, and a flow guide plate is arranged on the outer wall of the sleeve. The flow guide plate is in a spiral structure and wound around the sleeve.

[0009] Furthermore, two movable blocks are also movably sleeved on the support rod, and the two movable blocks are respectively located at both ends of the sleeve.

[0010] Furthermore, connecting blocks are arranged on both opposite sides of the inner wall of the tower barrel. An electric slide rail is connected between the two connecting blocks. A slider is slidably connected to the electric slide rail. A fixing block is arranged on the top surface of the slider. One end of the support rod far from the conducting member passes through the side wall of the tower barrel and is connected to the fixing block, and the support rod is movably matched with the tower barrel.

[0011] Furthermore, an installation cylinder is fixedly installed on the fixing block. Internal threads are arranged on the inner wall of the installation cylinder. One end of the support rod close to the fixing block is a threaded rod and is inserted into the installation cylinder and connected to the installation cylinder through thread matching.

[0012] Furthermore, a limiting block is arranged on the electric slide rail.

[0013] Furthermore, the conducting member includes a robotic arm. The robotic arm includes a guiding arm and two clamping arms. Conductive metal brushes are arranged on the opposite surfaces of the two clamping arms.

[0014] Furthermore, a support plate is arranged at one end of the support rod far from the tower barrel. One end of the robotic arm and the support plate are connected by bolts.

[0015] The beneficial effects of the present utility model are as follows:

[0016] When the detection device for the lightning protection conductivity of the offshore wind turbine unit is in use, the support rod extends out from the window inside the tower barrel, so that the conducting member is located on the movement track of the lightning arrester. Through the first wire and the second wire, the resistance detector, the conducting member, the blade, the nacelle and the tower barrel form a complete loop, and thus the lightning protection conductivity detection of the blade of the wind turbine unit can be completed, achieving the purposes of reducing the operation risk coefficient, shortening the detection period and improving the work efficiency.

[0017] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the present utility model.

[0019] Figure 2 This is a sectional view of the tower barrel of the present utility model.

[0020] Figure 3 This is a sectional view of the tower barrel of the present utility model from another perspective.

[0021] Figure 4 This is the front view of the present utility model.

[0022] Figure 5 For the present utility model Figure 1 Partial enlarged view of location A.

[0023] In the figure:

[0024] 1, tower barrel; 2, nacelle; 3, wind turbine; 4, blade;

[0025] 5, detection component; 51, support rod; 52, sleeve; 53, flow deflector; 54, support plate; 55, robotic arm; 5501, guiding arm; 5502, clamping arm; 5503, conductive metal brush; 56, resistance detector; 57, first wire; 58, second wire;

[0026] 6, electric slide rail; 7, slider; 8, limit block; 9, fixed block; 10, mounting cylinder; 11, window; 12, semi-circular pedal; 13, ladder; 14, connecting block; 15, lightning arrester. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0029] It should be noted that: similar reference numerals and letters denote similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0030] In the above description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "one side" and "the other side" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0031] In addition, terms such as "the same" do not mean that the components are required to be absolutely the same, but there may be slight differences. The term "vertical" only means that the positional relationship between the components is relatively more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0032] Please refer to Figures 1-5 , the present utility model provides a detection device for the lightning protection conductivity of an offshore wind turbine, including a support rod 51 and a resistance detector 56. One end of the support rod 51 is connected to the tower barrel 1, and the other end extends outward and is provided with a conduction member for lapping with the lightning arrester. The conduction member is located on the movement track of the lightning arrester 15.

[0033] The two wiring terminals of the resistance detector 56 are respectively connected to the conduction member and the ground wire through a first wire 57 and a second wire 58.

[0034] In this solution, a ladder 13 is arranged inside the tower barrel 1, and a window 11 flush with the movement track of the lightning arrester 15 is arranged on one side of the middle end of the tower barrel 1. The support rod 51 extends outward from the tower barrel 1 through the window 11 until the conduction member is located on the movement track of the lightning arrester 15.

[0035] When performing lightning protection conductivity detection on the blade 4 of a wind turbine, generally two workers are required to cooperate. One worker enters the interior of the tower barrel 1 and moves upward along the tower barrel 1 through the ladder 13 to the position of the window 11. Subsequently, the conduction component is installed at one end of the support rod 51, and one end of the first wire 57 is connected to the conduction component. Then, the other end of the first wire 57 slides to the ground through the window 11. The other worker on the ground connects the other end of the first wire 57 to the resistance detector 56. Subsequently, the two ends of the second wire 58 are respectively connected to the connection terminal of the resistance detector 56 and the ground wire. And the worker on the ground can control the rotation angle of the blade 4 until the blade 4 to be detected rotates to the vertically downward position. The worker on the ladder 13 moves the support rod 51 out of the tower barrel 1 through the window 11 until the conduction component contacts the lightning arrester 15 on the blade 4. The resistance detector 56, the conduction component, the blade 4, the nacelle 2, and the tower barrel 1 form a complete loop, completing the lightning protection conductivity detection of the blade 4 of the wind turbine. The detection data is displayed through the resistance detector 56.

[0036] In the present utility model, the support rod 51 extends out of the window 11 inside the tower barrel 1, so that the conduction component is located on the movement track of the lightning arrester 15. Through the first wire 57 and the second wire 58, the resistance detector 56, the conduction component, the blade 4, the nacelle 2, and the tower barrel 1 form a complete loop, and thus the lightning protection conductivity detection of the blade 4 of the wind turbine can be completed, achieving the purpose of reducing the operation risk coefficient, shortening the detection period, and improving the work efficiency.

[0037] In this embodiment: A sleeve 52 is movably sleeved on the support rod 51, and a flow guide plate 53 is arranged on the outer wall of the sleeve 52. The flow guide plate 53 is in a spiral structure wound around the sleeve 52.

[0038] When detecting the blade 4, the support rod 51 extends out of the tower barrel 1. Since the support rod 51 is at a high altitude and the wind force on the sea surface is relatively large, a sleeve 52 is sleeved on the support rod 51 and a spiral-structured flow guide plate 53 is wound around the sleeve 52. When the wind blows, the sleeve 52 drives the flow disturbance plate to rotate on the support rod 51, which can disturb the wind and reduce the sway of the support rod 51 caused by the wind.

[0039] In this embodiment: Two movable blocks (not marked in the figure, but those skilled in the art should understand the installation position of the movable blocks) are also movably sleeved on the support rod 51, and the two movable blocks are respectively located at both ends of the sleeve 52.

[0040] During the process of the wind blowing to drive the sleeve 52 to drive the flow disturbance plate to rotate, the two movable blocks can limit the sleeve 52 to prevent the sleeve 52 from moving left and right during the rotation of the sleeve 52.

[0041] In this embodiment: Connecting blocks 14 are provided on both opposite sides of the inner wall of the tower barrel 1. An electric slide rail 6 is connected between the two connecting blocks 14. A slider 7 is slidably connected to the electric slide rail 6. A fixing block 9 is provided on the top surface of the slider 7. One end of the support rod 51 far from the conduction member passes through the side wall of the tower barrel 1 and is connected to the fixing block 9, and the support rod 51 is movably matched with the tower barrel 1.

[0042] In this solution, a semi-circular arc plate is provided inside the tower barrel 1, and the semi-circular arc plate is located below the electric slide rail 6.

[0043] During use, after the staff climbs to the position of the window 11 through the ladder 13, they can stand on the semi-circular arc plate to operate, which improves the safety factor of the staff. After the staff stands on the semi-circular arc plate, first install the conduction member at one end of the support rod 51, and then connect the other end of the support rod 51 to the fixing block 9. When detection is required, the staff controls the electric slide rail 6 to make the slider 7 drive the fixing block 9 and the support rod 51 to move on the electric slide rail 6 until the support rod 51 drives the conduction member to move onto the movement track of the lightning arrester 15. After detecting one blade 4, the staff controls the electric slide to retract the support rod 51 and the conduction member into the tower barrel 1. Another staff on the ground controls the rotation of the blade 4. When another blade 4 rotates to the vertically downward position, the staff on the semi-circular arc plate repeats the previous operation, further improving the safety factor and work efficiency during the detection process.

[0044] In this embodiment: An installation cylinder 10 is fixedly installed on the fixing block 9. The inner wall of the installation cylinder 10 is provided with internal threads. One end of the support rod 51 near the fixing block 9 is a threaded rod and is inserted into the installation cylinder 10 and connected to the installation cylinder 10 through thread fit.

[0045] The support rod 51 is inserted into the installation cylinder 10 and connected to the installation cylinder 10 through thread fit, which is convenient for installation before detection and also convenient for removal and carrying away after detection.

[0046] In this embodiment: A limit block 8 is provided on the electric slide rail 6.

[0047] When the slider 7 slides to the position of the limit block 8, the conduction member on the support rod 51 is located on the movement track of the lightning arrester 15, which improves the work efficiency.

[0048] In this embodiment: The conduction member includes a robotic arm 55. The robotic arm 55 includes a guiding arm 5501 and two clamping arms 5502. Conductive metal brushes 5504 are provided on the opposite surfaces of the two clamping arms 5502.

[0049] After the slider 7 drives the support rod 51 to extend out of the tower barrel 1, the staff can remotely control the extension angle of the robotic arm 55 through the controller until the lightning arrester 15 is located between the two clamping arms 5502 of the robotic arm 55, and then control the two clamping arms 5502 to close until the conductive metal brush 5504 contacts the lightning arrester 15 to achieve conduction. (The robotic arm 55 is a robot that can simulate the movement of a human arm. It consists of multiple joints and actuators and can complete various complex industrial operations through remote control by the controller. It is a mature technology in the prior art, so this application will not describe it in detail here.)

[0050] In this embodiment: A support plate 54 is provided at one end of the support rod 51 away from the tower barrel 1, and one end of the robotic arm 55 is bolted to the support plate 54.

[0051] In this solution, a camera (not shown in the figure) is provided on one side of the support plate 51, which facilitates the staff to observe the lapping situation of the robotic arm 55 with the lightning arrester 15 at any time.

[0052] The robotic arm 55 is connected to the support plate 54 by bolts, which is convenient for removal and separate storage after the detection is completed.

[0053] Among them, the model of the resistance detector is ST2241-D; the model of the electric slide rail is A660; the model of the robotic arm is CSF-65-160-GH.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A detection device for the lightning protection conductivity of an offshore wind turbine, characterized in that: It includes a support rod (51) and a resistance detector (56). One end of the support rod (51) is connected to the tower barrel (1), and the other end extends outward and is provided with a conduction member for lapping with the lightning arrester (15). The conduction member is located on the movement track of the lightning arrester (15). Two wiring terminals of the resistance detector (56) are respectively connected to the conduction member and the ground wire through a first wire (57) and a second wire (58).

2. The detection device for the lightning protection conductivity of an offshore wind turbine unit according to claim 1, characterized in that: A sleeve (52) is movably sleeved on the support rod (51), and a flow guide plate (53) is arranged on the outer wall of the sleeve (52). The flow guide plate (53) is in a spiral structure wound around the sleeve (52).

3. The detection device for lightning protection conductivity of an offshore wind turbine according to claim 2, wherein: Two movable blocks are also movably sleeved on the support rod (51), and the two movable blocks are respectively located at both ends of the sleeve (52).

4. The detection device for lightning protection conductivity of an offshore wind turbine according to claim 3, wherein: Connecting blocks (14) are arranged on opposite sides of the inner wall of the tower barrel (1). An electric slide rail (6) is connected between the two connecting blocks (14). A slider (7) is slidably connected to the electric slide rail (6). A fixing block (9) is arranged on the top surface of the slider (7). One end of the support rod (51) far from the conduction member passes through the side wall of the tower barrel (1) and is connected to the fixing block (9), and the support rod (51) is movably matched with the tower barrel (1).

5. The detection device for lightning protection conductivity of an offshore wind turbine according to claim 4, characterized in that: An installation cylinder (10) is fixedly installed on the fixing block (9). Internal threads are arranged on the inner wall of the installation cylinder (10). One end of the support rod (51) close to the fixing block (9) is a threaded rod and is inserted into the installation cylinder (10) and connected to the installation cylinder (10) through thread fit.

6. The detection device for lightning protection conductivity of an offshore wind turbine according to claim 5, characterized in that: A limiting block (8) is arranged at one end of the electric slide rail (6) close to the blade (4).

7. The detecting device for lightning protection conductivity of an offshore wind turbine according to claim 6, characterized in that: The conduction member includes a robotic arm (55). The robotic arm (55) is composed of a guiding arm (5501) and two clamping arms (5502). Conductive metal brushes (5504) are arranged on the opposite surfaces of the two clamping arms (5502).

8. The detecting device for lightning protection conductivity of an offshore wind turbine according to claim 7, characterized in that: A support plate (54) is arranged at one end of the support rod (51) far from the tower barrel (1). One end of the robotic arm (55) and the support plate (54) are connected by bolts.

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