Lightning conductor disconnection test sensor fixing device and lightning conductor test system

Abstract

The utility model relates to a lightning conductor broken line test sensor fixing device and a lightning conductor test system, the lightning conductor broken line test sensor fixing device is used for fixedly sleeving a sensor on a lightning conductor, and the fixing device comprises an adjusting seat fixedly sleeving the end part of the sensor, and the adjusting seat is provided with a spiral hole along the axial direction of the lightning conductor; the connecting seat comprises a connecting seat body and a limiting part, the lightning conductor is sleeved with the connecting seat body, the connecting seat body is arranged on the side, away from the sensor, of the adjusting seat, and the connecting seat and the adjusting seat can rotate relatively; the at least two clamping blocks are used for clamping a lightning conductor, a mounting groove is formed in the inner side wall of the connecting seat body, the clamping blocks are slidably connected to the mounting groove in the radial direction, guide column heads are arranged at the end parts of the clamping blocks in the axial direction, and the guide column heads are slidably connected to the spiral holes; and the fastener is used for limiting the relative rotation of the connecting seat and the adjusting seat. Therefore, the connection stability of the sensor and the lightning conductor is ensured, and the stability of signal receiving and transmission is further ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lightning protection wire breakage detection for wind turbines, and specifically, to a fixing device for a lightning protection wire breakage test sensor and a lightning protection wire test system. Background Art

[0002] During normal power generation operation of a wind turbine, if it is struck by lightning, it will cause local failures in the mechanical system or the electrical system. In severe cases, it will cause serious accidents such as blade explosion and fire, and lead to long-term shutdowns, resulting in a large loss of power generation. Moreover, the cost of a wind turbine is high. If it is struck by lightning, especially if valuable components such as blades and generators are struck by lightning, in addition to the loss of power generation during the repair period, it is also necessary to bear the huge transportation and hoisting costs for the disassembly, installation and replacement of the damaged components.

[0003] How to measure the lightning protection wire of the blade efficiently and at low cost has become a problem for each wind farm. In the related art, the sensor is directly sleeved on the lightning rod, resulting in an unstable combination between the sensor and the lightning rod, thus affecting the acquisition and transmission of signals by the sensor, and further affecting the detection result. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a fixing device for a lightning protection wire breakage test sensor and a lightning protection wire test system to at least partially solve the problems existing in the related art.

[0005] To achieve the above purpose, the present disclosure provides a fixing device for a lightning protection wire breakage test sensor, which is used to fixedly sleeve the sensor on the lightning protection wire. The fixing device includes:

[0006] An adjusting seat, fixedly sleeved on the end of the sensor. The adjusting seat is provided with a spiral hole along the axial direction of the lightning protection wire. The cross-section of the spiral hole is configured in a spiral shape. The distance between the spiral hole and the lightning protection wire gradually decreases from the first end along the radial direction of the lightning protection wire to the second end;

[0007] A connecting seat, including a connecting seat body and a limiting part. Among them, the connecting seat body is sleeved on the lightning protection wire and is located on the side of the adjusting seat away from the sensor. There is a gap between the inner side wall of the connecting seat body and the lightning protection wire. The limiting part is used to limit the relative displacement of the adjusting seat and the connecting seat in the axial direction. The connecting seat and the adjusting seat can rotate relative to each other;

[0008] At least two clamping blocks for clamping the lightning protection wire. An installation groove is opened on the inner side wall of the connecting seat body. The clamping blocks are slidably connected to the installation groove along the radial direction. A guiding head is provided at the axial end of the clamping block, and the guiding head is slidably connected to the spiral hole; and

[0009] A fastener for restricting relative rotation between the connection base and the adjustment base.

[0010] Optionally, a guide groove is formed on the side wall of the installation groove, and a slider slidably connected to the guide groove is provided on the side wall of the clamping block.

[0011] Optionally, there is a gap between the slider and the side wall of the guide groove.

[0012] Optionally, a plurality of installation grooves are formed on the inner side wall of the connection base body, and the plurality of installation grooves are arranged at equal intervals along the radial direction.

[0013] Optionally, the end of the clamping block for abutting against the lightning protection wire is configured to be arc-shaped to fit the outer wall of the lightning protection wire.

[0014] Optionally, the limiting portion is configured as an L shape. The limiting portion includes a first side and a second side. The first side is connected to the end of the connection base body close to the adjustment base, and the second side abuts against the end of the adjustment base away from the connection base body.

[0015] Optionally, the fastener is a screw, and the screw is screwed on the first side of the limiting portion and abuts against the side wall of the adjustment base.

[0016] Optionally, a countersunk screw hole for the screw to extend into is formed on the first side of the limiting portion.

[0017] Optionally, there is a gap between the guide stud head and the spiral hole.

[0018] According to a second aspect of the present disclosure, a lightning protection wire testing system is further provided, including a blade main body, a lightning protection wire connected to the inner side of the blade main body, a sensor fixed to the lightning protection wire by the above fixing device, a pulse signal generating device and a signal conditioner electrically connected to the sensor, and a controller electrically connected to the pulse signal generating device and the signal conditioner respectively.

[0019] By the above technical solution, by sleeving the sensor on the lightning protection wire, then rotating the sensor to drive the adjustment base to rotate relative to the connection base around its own central axis, the limiting portion can restrict the adjustment base and the connection base from having relative displacement in the axial direction. By sliding the guide stud head in the spiral hole and sliding from the first section to the second section of the spiral hole, it can move towards the center of the adjustment base, and then the clamping block slides along the installation groove towards the center of the connection base, making the clamping block approach the lightning protection wire until it abuts against it. Then, the adjustment base is positioned by the fastener, completing the installation of the sensor, ensuring the connection stability between the sensor and the lightning protection wire, and further ensuring the stability of signal reception and transmission.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a schematic structural diagram of a lightning protection wire test system provided by an exemplary embodiment of the present disclosure;

[0023] Figure 2 is an assembly schematic diagram of a fixing device for a lightning protection wire breakage test sensor and the sensor provided by an exemplary embodiment of the present disclosure;

[0024] Figure 3 is a schematic structural diagram of a fixing device for a lightning protection wire breakage test sensor provided by an exemplary embodiment of the present disclosure;

[0025] Figure 4 is a schematic structural diagram of the fixing device for a lightning protection wire breakage test sensor from another angle provided by an exemplary embodiment of the present disclosure;

[0026] Figure 5 is a schematic structural diagram of a clamping block in the fixing device for a lightning protection wire breakage test sensor provided by an exemplary embodiment of the present disclosure;

[0027] Figure 6 is an assembly schematic diagram of a blade main body and a lightning protection wire in a lightning protection wire test system provided by an exemplary embodiment of the present disclosure.

[0028] DESCRIPTION OF REFERENCE NUMERALS

[0029] 1 - Sensor; 2 - Lightning protection wire; 3 - Adjusting seat; 31 - Screw hole; 311 - First end; 312 - Second end; 4 - Connecting seat; 41 - Connecting seat body; 411 - Installation groove; 412 - Guide groove; 42 - Limiting part; 5 - Clamping block; 51 - Guide stud head; 52 - Slide block; 6 - Fastener; 7 - Blade main body; 8 - Pulse signal generating device; 9 - Signal conditioner; 10 - Controller. DETAILED DESCRIPTION

[0030] The following details the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and understanding the present disclosure, and are not used to limit the present disclosure.

[0031] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the contour of the corresponding component itself. The terms "first", "second", etc. are used to distinguish different components and do not have an order or importance. In this disclosure, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0032] Referring to Figures 1 to 5 , this disclosure provides a fixing device for a lightning protection wire breakage test sensor. This fixing device is used to fixedly sleeved the sensor 1 on the lightning protection wire 2. The fixing device may include an adjusting seat 3, a connecting seat 4, at least two clamping blocks 5 and a fastener 6. Among them, the adjusting seat 3 is fixedly sleeved on the end of the sensor 1. The adjusting seat 3 is provided with a spiral hole 31 along the axial direction of the lightning protection wire 2. The cross-section of the spiral hole 31 is configured in a spiral shape. The spiral hole 31 gradually decreases in distance from the first end 311 to the second end 312 along the radial direction of the lightning protection wire 2; the connecting seat 4 may include a connecting seat body 41 and a limiting portion 42. Among them, the connecting seat body 41 is sleeved on the lightning protection wire 2 and is located on the side of the adjusting seat 3 away from the sensor 1. There is a gap between the inner side wall of the connecting seat body 41 and the lightning protection wire 2. The limiting portion 42 is used to limit the relative displacement of the adjusting seat 3 and the connecting seat 4 in the axial direction. The connecting seat 4 and the adjusting seat 3 can rotate relative to each other; the clamping block 5 is used to clamp the lightning protection wire 2. An installation groove 411 is opened on the inner side wall of the connecting seat body 41. The clamping block 5 is slidably connected to the installation groove 411 in the radial direction. A guiding head 51 is provided at the axial end of the clamping block 5. The guiding head 51 is slidably connected to the spiral hole 31; the fastener 6 is used to limit the relative rotation of the connecting seat 4 and the adjusting seat 3. Among them, the inner diameters of the adjusting seat 3 and the connecting seat 4 are both larger than the outer diameter of the lightning protection wire 2; it is convenient for the adjusting seat 3 and the connecting seat 4 to be sleeved on the lightning protection wire 2.

[0033] Through the above technical solution, by sleeving the sensor on the lightning protection wire, and then rotating the sensor to drive the adjusting seat to rotate relative to the connecting seat around its own central axis, the limiting portion can limit the adjusting seat and the connecting seat from having relative displacement in the axial direction. By sliding the guiding head in the spiral hole, from the first section of the spiral hole to the second section, so as to be able to move towards the center of the adjusting seat, and then make the clamping block slide towards the center of the connecting seat along the installation groove, so that the clamping block approaches the lightning protection wire until it abuts against it. Then, the adjusting seat is positioned by the fastener, and the installation of the sensor is completed, ensuring the connection stability between the sensor and the lightning protection wire, and further ensuring the stability of signal reception and transmission.

[0034] Specifically, referring to Figure 4 , Figure 5, a guiding groove 412 may be formed on the side wall of the mounting groove 411, and a sliding block 52 slidably connected to the guiding groove 412 is provided on the side wall of the clamping block 5. The clamping block 5 can slide radially in the mounting groove 411 through the sliding connection between the guiding groove 412 and the sliding block 52. In the embodiments of the present disclosure, guiding grooves 412 are respectively formed on two opposite side walls of the mounting groove 411.

[0035] Wherein, a gap may be provided between the sliding block 52 and the side wall of the guiding groove 412. This ensures the stability of the clamping block 5 during movement and the stability of clamping the lightning protection wire 2.

[0036] In the embodiments of the present disclosure, referring to Figure 4 , a plurality of mounting grooves 411 may be formed on the inner side wall of the connecting seat body 41, and the plurality of mounting grooves 411 are arranged at equal intervals radially. Specifically, three mounting grooves 411 arranged at equal intervals radially may be provided, and the three clamping blocks 5 abut against the outer wall of the lightning protection wire 2 to clamp the lightning protection wire 2.

[0037] As an exemplary embodiment of the present disclosure, referring to Figure 3 , Figure 5 , the end of the clamping block 5 for abutting against the lightning protection wire 2 may be configured to be arc-shaped to fit the outer wall of the lightning protection wire 2. The outer diameter of the arc-shaped end of the clamping block 5 for abutting against the lightning protection wire 2 is adapted to the inner diameter of the lightning protection wire 2. By abutting the two, the contact area between the clamping block 5 and the lightning protection wire 2 can be increased, thereby improving the stability of clamping and positioning.

[0038] In some embodiments, referring to Figure 3 , the limiting portion 42 may be configured as an L shape. The limiting portion 42 may include a first side and a second side. The first side is connected to the end of the connecting seat body 41 close to the adjusting seat 3, and the second side abuts against the end of the adjusting seat 3 far from the connecting seat body 41. By the second side abutting against the end of the adjusting seat 3, the axial displacement of the adjusting seat 3 relative to the connecting seat 4 is restricted, and the adjusting seat 3 can rotate relative to the connecting seat 4.

[0039] Furthermore, referring to Figure 2 , the fastening member 6 may be a screw, and the screw is screwed on the first side of the limiting portion 42 and abuts against the side wall of the adjusting seat 3. By tightening the screw, the screw can abut against the side wall of the adjusting seat 3 to position the adjusting seat 3.

[0040] Furthermore, a countersunk screw hole for the screw to extend into may be formed on the first side of the limiting portion 42. By providing the countersunk screw hole, the set screw is sunk into its inside, facilitating the installation of the screw.

[0041] In some embodiments, referring to Figure 2, there may be a gap between the guiding stud 51 and the helical hole 31. This ensures the stability of the guiding stud 51 during sliding, and thus ensures the stability of the clamping of the lightning protection wire 2.

[0042] According to the second aspect of the present disclosure, there is also provided a lightning protection wire testing system. The lightning protection wire testing system may include a blade main body 7, a lightning protection wire 2 connected to the inner side of the blade main body 7, a sensor 1 fixed on the lightning protection wire 2 by the above-mentioned fixing device, a pulse signal generating device 8 and a signal conditioner 9 electrically connected to the sensor 1, and a controller 10 electrically connected to the pulse signal generating device 8 and the signal conditioner 9 respectively. The lightning protection wire 2 is detected by the pulse signal generating device 8 and the signal conditioner 9. The sensor 1 establishes a signal transmission connection with the controller 10 through a signal conditioning circuit, and the controller 10 controls the pulse signal generating device 8 to emit a pulse signal and load it onto the lightning protection wire 2. This lightning protection wire testing system has all the beneficial effects of the above-mentioned lightning protection wire breakage testing sensor fixing device, which will not be elaborated here.

[0043] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0044] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0045] In addition, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A fixing device for a lightning protection wire breakage test sensor, which is used to fixedly sleeved the sensor on the lightning protection wire, and is characterized in that, The fixing device includes: An adjusting seat, fixedly sleeved on the end of the sensor. The adjusting seat is provided with a spiral hole along the axial direction of the lightning protection wire. The cross-section of the spiral hole is configured in a spiral shape. The distance between the spiral hole and the lightning protection wire gradually decreases from the first end along the radial direction of the lightning protection wire to the second end; A connecting seat, including a connecting seat body and a limiting portion. Among them, the connecting seat body is sleeved on the lightning protection wire and is located on the side of the adjusting seat away from the sensor. There is a gap between the inner side wall of the connecting seat body and the lightning protection wire. The limiting portion is used to limit the relative displacement in the axial direction between the adjusting seat and the connecting seat. The connecting seat and the adjusting seat can rotate relative to each other; At least two clamping blocks, used to clamp the lightning protection wire. An installation groove is opened on the inner side wall of the connecting seat body. The clamping block is slidably connected to the installation groove along the radial direction. A guiding stud head is provided at the end of the clamping block along the axial direction. The guiding stud head is slidably connected to the spiral hole; and A fastener, used to limit the relative rotation between the connecting seat and the adjusting seat.

2. The lightning conductor breakage test sensor fixing device according to claim 1, characterized in that, A guiding groove is formed on the side wall of the installation groove. A sliding block is provided on the side wall of the clamping block and is slidably connected to the guiding groove.

3. The lightning protection wire breakage test sensor fixing device according to claim 2, wherein There is a gap between the sliding block and the side wall of the guiding groove.

4. The lightning protection wire breakage test sensor fixing device according to claim 1, characterized in that, A plurality of installation grooves are opened on the inner side wall of the connecting seat body. The plurality of installation grooves are evenly spaced along the radial direction.

5. The lightning protection wire breakage test sensor fixing device according to claim 1, characterized in that, The end of the clamping block for abutting against the lightning protection wire is configured in an arc shape to fit the outer wall of the lightning protection wire.

6. The lightning protection wire breakage test sensor fixing device according to claim 1, characterized in that, The limiting portion is configured as an L shape. The limiting portion includes a first side and a second side. The first side is connected to the end of the connecting seat body close to the adjusting seat. The second side abuts against the end of the adjusting seat away from the connecting seat body.

7. The lightning protection wire breakage test sensor fixing device according to claim 6, characterized in that, The fastener is a screw. The screw is screwed on the first side of the limiting portion and abuts against the side wall of the adjusting seat.

8. The lightning protection wire breakage test sensor fixing device according to claim 7, characterized in that, A countersunk screw hole for the screw to extend into is opened on the first side of the limiting portion.

9. The lightning protection wire breakage test sensor fixing device according to claim 1, characterized in that, There is a gap between the guiding stud head and the spiral hole.

10. A lightning protection wire testing system, characterized in that, It includes a blade body, a lightning protection wire connected to the inner side of the blade body, a sensor fixed on the lightning protection wire by the fixing device according to any one of claims 1-9, a pulse signal generating device and a signal conditioner electrically connected to the sensor, and a controller electrically connected to the pulse signal generating device and the signal conditioner respectively.

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