Offshore wind plant blade conductivity measuring device

Abstract

The invention relates to an offshore wind power plant blade conductivity measuring device, and relates to the technical field of electric field blade conductivity measurement, the offshore wind power plant blade conductivity measuring device comprises a basic rod piece, a rotating rod piece is rotatably connected to a point in the length direction of the basic rod piece, and the length direction of the rotating rod piece is perpendicular to the length direction of the basic rod piece; a telescopic rod is arranged on the rotating rod piece, the telescopic rod is arranged in the length direction of the rotating rod piece and is parallel to the length direction of the rotating rod piece, a copper net bag is fixedly connected to the end portion of the telescopic end of the telescopic rod, and a fixing assembly used for fixing the telescopic rod to the rotating rod piece is arranged on the rotating rod piece. The method and the device have the effect of reducing the risk in the process of measuring the conductivity of the blades of the offshore wind plant by operators.

Description

Technical Field

[0001] The present application relates to the technical field of electric field blade conductivity measurement, and in particular to an offshore wind farm blade conductivity measurement device. Background Art

[0002] Thunderstorms are more common in summer and last longer. When the wind turbine is running, the blades rotate to the highest point and are struck by direct lightning. The huge energy released by the lightning strike causes damage to the unit blades, generator insulation breakdown, control components burning, and even fires, causing huge direct and indirect economic losses to the wind farm. Therefore, the lightning protection performance of the wind turbine is very important, and it is necessary to regularly check and measure the conductivity of the blade tip lightning rod to the tower base grounding point.

[0003] In the related technology, a metal net bag is usually used. A rope is used to lower the net bag from the top of the cabin to the tip of the blade. The cable led out of the net bag is connected to the instrument to measure the resistance from the blade tip lightning rod to the grounding point at the bottom of the tower. However, the above method is risky for operators to work outside the cabin, and it is difficult to put the net bag on the blade tip. It takes a long time to measure three blades, and the operation efficiency is low. At the same time, a hanging basket can also be used. The hanging basket is lowered to the tip of the blade and the wire is connected to the measuring instrument. However, the cost of using a hanging basket for offshore operations is high and the operation risk is high. Summary of the invention

[0004] In order to reduce the risks for operators during the process of measuring the conductivity of blades in an offshore wind farm, the present application provides a device for measuring the conductivity of blades in an offshore wind farm.

[0005] The present application provides an offshore wind farm blade conductivity measurement device that adopts the following technical solution: A conductivity measuring device for blades in an offshore wind farm comprises a base rod, a rotating rod being rotatably connected at a point in the length direction of the base rod, the length direction of the rotating rod being perpendicular to the length direction of the base rod, a telescopic rod being provided on the rotating rod, the telescopic rod being arranged along the length direction of the rotating rod and being parallel to the length direction of the rotating rod, a copper net bag being fixedly connected to the telescopic end of the telescopic rod, and a fixing component for fixing the telescopic rod on the rotating rod being provided on the rotating rod.

[0006] By adopting the above technical scheme, the basic rod can be fixed on a guardrail such as on an outer platform, and the telescopic rod can be fixed on the rotating rod through a fixing assembly, and the length of the telescopic rod can be adjusted according to actual conditions. Then, the rod can be rotated to realize the rotation of the telescopic rod on the basic rod, so that the operator can check and measure the conductivity performance of the blade tip lightning rod to the tower base grounding point without the need for high-altitude operations. The line resistance of the blade tip lightning rod can be directly transmitted to the ground equipment through the copper net bag, thereby measuring the line resistance of the blade tip lightning rod, thereby greatly reducing the risk of operators in the process of measuring the conductivity of offshore wind farm blades.

[0007] Optionally, the fixing assembly includes a plurality of U-shaped locks, the U-shaped locks are passed through and detachably connected to the rotating rod, the telescopic rod is placed in an inner arc surface of the U-shaped lock, and the U-shaped lock presses the telescopic rod onto the rotating rod.

[0008] By adopting the above technical solution, the telescopic rod can be pressed onto the rotating rod by the U-shaped lock, thereby achieving stable fixation of the telescopic rod on the rotating rod.

[0009] Optionally, two parallel mounting plates are fixedly connected to the base rod, a same rotating screw is rotatably connected between the two mounting plates, both ends of the rotating screw are threadedly connected with rotating nuts, two connecting plates are fixedly connected to the rotating rod, the connecting plates correspond to the mounting plates one by one, the mounting plates are passed through and rotatably connected to the rotating screw, and the rotating rod is rotatably connected to the base rod via the rotating screw.

[0010] By adopting the above technical solution, the rotation of the rotating rod on the base rod can be realized by rotating the screw rod, the installation plate and the connecting plate. During installation, the rotating nut can be detached from the rotating screw rod by rotating the rotating nut, and then the connecting plate is inserted into the rotating screw rod, and then the rotating nut is threadedly connected to the two ends of the rotating screw rod, so that the rotating connection between the rotating rod and the base rod can be quickly realized.

[0011] Optionally, the base rod is provided with a plurality of pairs of through holes for passing bolts, and the plurality of pairs of through holes are arranged along the length direction of the base rod.

[0012] By adopting the above technical solution, through holes can be preset on the basic rods, which facilitates the fixation of the basic rods during installation.

[0013] Optionally, a rotating disk is rotatably connected to the base rod, a tooth groove is provided on the arc-shaped outer wall of the rotating disk along the circumference of the rotating disk, the mounting plate is fixedly connected to the rotating disk, and a limiting mechanism for limiting the rotation of the rotating disk is provided on the base rod.

[0014] By adopting the above technical scheme, the rotation of the rotating rod on the base rod can be realized through the rotating disk, and then the telescopic rod can be rotated according to the actual situation, thereby increasing the detection range of the copper net bag. At the same time, the rotation of the rotating disk can be limited by the limit mechanism to achieve the fixation of the copper net bag after the position is changed.

[0015] Optionally, an adjusting groove is provided on the base rod, and a tooth groove is provided on the arc-shaped outer wall of the rotating disk along the circumference of the rotating disk. The limiting mechanism includes a limiting tooth block slidably connected in the adjusting groove, and a limiting spring is fixedly connected between the limiting tooth block and the adjusting groove. Under the action of the limiting spring, the tip of the limiting tooth block abuts against the tooth groove and limits the rotation of the rotating disk. The rotating rod is provided with an adjusting component for adjusting the position of the limiting tooth block.

[0016] By adopting the above technical solution, the rotation of the rotating disk can be limited by the engagement of the limit tooth block with the tooth groove. At the same time, the limit tooth block can be driven to move by the adjustment component so that the limit tooth block cancels the restriction on the rotating disk. Then, the position of the copper net bag can be changed by rotating the rotating rod.

[0017] Optionally, the adjustment component includes an adjustment rope, one end of the adjustment rope is fixedly connected to the limit tooth block, one end of the rotating rod away from the copper net bag is fixedly connected to a fixed shaft, an adjustment handle is passed through and rotatably connected to the fixed shaft, and the other end of the adjustment rope is fixedly connected to the adjustment handle.

[0018] By adopting the above technical solution, the adjusting handle can be pressed to rotate the adjusting handle on the fixed axis to a certain extent, so that the adjusting handle drives the limiting tooth block away from the tooth groove of the rotating disk through the adjusting rope, thereby quickly canceling the restriction of the limiting tooth block on the rotation of the rotating disk.

[0019] Optionally, a plurality of limiting rings are fixedly connected to the rotating rod, the plurality of limiting rings are equidistantly arranged along the length direction of the rotating rod, and the adjustment rope is passed through the plurality of limiting rings.

[0020] By adopting the above technical solution, the position of the adjustment rope can be limited by the limiting ring, thereby reducing the possibility of the adjustment rope being entangled with the outside world or being entangled with itself during the adjustment process.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The tooling manufacturing cost is low, economical, convenient, simple to operate and highly economical; 2. It can shorten the operation time and improve the operation efficiency. It can measure 5 to 6 units a day with high timeliness; 3. Widely applicable, suitable for most long-blade models of the same type of offshore units, with a wide range of adaptability; 4. It is less affected by high wind speeds and does not require out-of-cabin operations or hanging basket operations. It can be operated on the external platform, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 is a schematic structural diagram of the mounting plate of Example 1 of the present application; Figure 3 is a schematic structural diagram of a rotating disk according to Embodiment 2 of the present application; Figure 4 It is a schematic diagram of the structure of the limiting tooth block of Example 2 of the present application.

[0023] In the figure, 1. base rod; 11. through hole; 12. adjustment slot; 2. rotating rod; 3. telescopic rod; 4. copper net bag; 5. fixing assembly; 51. U-lock; 52. locking nut; 6. mounting plate; 7. rotating screw; 71. rotating nut; 8. connecting plate; 9. rotating disk; 91. tooth groove; 10. limiting mechanism; 101. limiting tooth block; 102. limiting spring; 103. adjusting assembly; 1031. adjusting rope; 1032. fixed shaft; 1033. handle; 104. limiting ring; 105. winding column. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0025] Example 1 A device for measuring the conductivity of blades in offshore wind farms, referring to Figure 1 and Figure 2 , including a basic rod 1, which is configured as a rectangular channel steel. The basic rod 1 is provided with multiple pairs of through holes 11 for passing bolts, and in this embodiment, two pairs of through holes 11 are provided. The two pairs of through holes 11 are arranged along the length direction of the basic rod 1. A rotating rod 2 is provided at the midpoint of the length direction of the basic rod 1, and the length direction of the rotating rod 2 is perpendicular to the length direction of the basic rod 1, and the rotating rod 2 is also configured as a rectangular channel steel.

[0026] The rotating rod 2 is provided with a telescopic rod 3, and the telescopic rod 3 is arranged as a multi-stage telescopic rod 3. The telescopic rod 3 is arranged along the length direction of the rotating rod 2, and the axis of the telescopic rod 3 is parallel to the length direction of the rotating rod 2. The telescopic end of the telescopic rod 3 is fixedly connected with a copper net bag 4, and the rotating rod 2 is provided with a fixing component 5 for fixing the telescopic rod 3 on the rotating rod 2.

[0027] The fixing assembly 5 includes a plurality of U-shaped locks 51, and in this embodiment, two U-shaped locks 51 are provided. The U-shaped locks 51 are passed through and detachably connected to the rotating rod 2, and the telescopic rod 3 is placed in the inner arc surface of the U-shaped lock 51. The ends of the U-shaped lock 51 are both threadedly connected with locking nuts 52, and the locking nuts 52 are tightly attached to the side wall of the base rod 1 and fix the U-shaped lock 51 to the rotating rod 2. The U-shaped lock 51 presses the telescopic rod 3 onto the rotating rod 2. Therefore, by rotating the locking nut 52, the locking nut 52 can be disengaged from the U-shaped lock 51, thereby canceling the fixation of the U-shaped lock 51 on the rotating rod 2.

[0028] Two mounting plates 6 are fixedly connected to the side of the base member 1 facing away from the telescopic rod 3, and the two mounting plates 6 are arranged in parallel. A rotating screw 7 is inserted and rotatably connected between the two mounting plates 6, and the axial direction of the rotating screw 7 is parallel to the length direction of the base member 1. Rotating nuts 71 are threadedly connected to both ends of the rotating screw 7, and the two mounting plates 6 are located between the two rotating nuts 71.

[0029] Two connecting pieces 8 are fixedly connected to the rotating rod 2, and the two connecting pieces 8 are placed between the two mounting pieces 6 and the connecting pieces 8 correspond to the mounting pieces 6 one by one. The mounting pieces 6 are passed through and rotatably connected to the rotating screw 7. The rotating rod 2 is rotatably connected to the base rod 1 through the rotating screw 7 and can rotate around the base rod 1 to a certain extent.

[0030] During installation, the rotating nut 71 can be rotated to disengage the rotating screw 7, and then the connecting piece 8 can be passed through the rotating screw 7, and then the rotating nut 71 can be threadedly connected to the two ends of the rotating screw 7, so as to quickly realize the rotational connection between the rotating rod 2 and the base rod 1.

[0031] The implementation principle of the embodiment of the present application is as follows: the basic rod 1 can be fixed on a guardrail such as on an outer platform, and then the telescopic rod 3 can be fixed on the rotating rod 2 by adjusting the U-lock 51 and the locking nut 52, and the length of the telescopic rod 3 can be adjusted according to actual conditions, and at the same time, a wire can be set between the copper net bag 4 and the ground equipment to connect the two. Then, the rotation of the telescopic rod 3 on the basic rod 1 can be achieved by rotating the rotating rod 2 on the basic rod 1, so that the copper net bag 4 abuts against the blade. Then, the line resistance of the blade tip lightning receptor can be directly transmitted to the ground equipment through the copper net bag 4, so as to measure the line resistance of the blade tip lightning receptor.

[0032] Example 2 The difference from Example 1 is: Figure 3 and Figure 4The base rod 1 is rotatably connected with a rotating disk 9, and the axis of the rotating disk 9 is perpendicular to the length direction of the base rod 1. The mounting piece 6 is fixedly connected to the upper end surface of the rotating disk 9, and the base rod 1 is provided with a limiting mechanism 10 for limiting the rotation of the rotating disk 9.

[0033] An adjusting groove 12 is provided on the base rod 1, and the adjusting groove 12 is connected to the tooth groove 91. A tooth groove 91 is provided on the arc-shaped outer wall of the rotating disk 9, and the tooth groove 91 is arranged along the circumference of the rotating disk 9. The limiting mechanism 10 includes a limiting tooth block 101 slidably connected in the adjusting groove 12, and a limiting spring 102 is fixedly connected between the limiting tooth block 101 and the groove bottom of the adjusting groove 12. Under the action of the limiting spring 102, the tip of the limiting tooth block 101 abuts against the tooth groove 91 and limits the rotation of the rotating disk 9.

[0034] The limiting mechanism 10 also includes an adjusting assembly 103 for adjusting the position of the limiting tooth block 101. The adjusting assembly 103 includes an adjusting rope 1031. One end of the adjusting rope 1031 is fixedly connected to the end of the limiting tooth block 101 away from the rotating disk 9. The other end of the adjusting rope 1031 passes through the base rod 1 and is placed at the end of the rotating rod 2 away from the copper net bag 4. At the same time, in order to reduce the friction between the adjusting rope 1031 and the adjusting groove 12, a winding post 105 is fixedly connected in the adjusting groove 12. The adjusting rope 1031 abuts against the arc-shaped side wall of the winding post 105, and under the restriction of the winding post 105, the path of the adjusting rope 1031 is changed.

[0035] The end of the rotating rod 2 away from the copper net bag 4 is fixedly connected to a fixed shaft 1032, and an adjustment handle 1033 is passed through and rotatably connected to the fixed shaft 1032. The adjustment handle 1033 is set in a V shape, and the end of the adjustment rope 1031 away from the limiting tooth block 101 is fixedly connected to the adjustment handle 1033. At the same time, in order to reduce the occurrence of the adjustment rope 1031 being entangled with the outside world or entangled with itself during the adjustment process, a plurality of limiting rings 104 are fixedly connected to the rotating rod 2, and the plurality of limiting rings 104 are equidistantly arranged along the length direction of the rotating rod 2, and the adjustment rope 1031 is passed through the plurality of limiting rings 104.

[0036] The implementation principle of Example 2 is: by pressing the adjustment handle 1033, the adjustment handle 1033 can be rotated to a certain extent on the fixed shaft 1032, so that the adjustment handle 1033 drives the limiting tooth block 101 away from the tooth groove 91 of the rotating disk 9 through the adjustment rope 1031, thereby quickly canceling the restriction of the limiting tooth block 101 on the rotation of the rotating disk 9, and then an external force can be applied to the rotating rod 2, so that the rotating rod 2 can be rotated to a certain extent on the base rod 1 through the rotating disk 9, thereby changing the position of the rotating rod 2.

[0037] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for measuring the conductivity of blades in an offshore wind farm, characterized in that: The invention comprises a base rod (1), wherein a rotating rod (2) is rotatably connected to a point in the length direction of the base rod (1), the length direction of the rotating rod (2) is perpendicular to the length direction of the base rod (1), a telescopic rod (3) is provided on the rotating rod (2), the telescopic rod (3) is arranged along the length direction of the rotating rod (2) and is parallel to the length direction of the rotating rod (2), a copper net bag (4) is fixedly connected to the telescopic end of the telescopic rod (3), and a fixing component (5) for fixing the telescopic rod (3) on the rotating rod (2) is provided on the rotating rod (2).

2. The offshore wind farm blade conductivity measurement device according to claim 1, characterized in that: The fixing assembly (5) comprises a plurality of U-shaped locks (51), wherein the U-shaped locks (51) are passed through and detachably connected to the rotating rod (2), the telescopic rod (3) is placed within an inner arc surface of the U-shaped lock (51), and the U-shaped locks (51) press the telescopic rod (3) onto the rotating rod (2).

3. The offshore wind farm blade conductivity measurement device according to claim 1, characterized in that: The base rod (1) is fixedly connected to two parallel mounting plates (6), a same rotating screw (7) is rotatably connected between the two mounting plates (6), both ends of the rotating screw (7) are threadedly connected to rotating nuts (71), the rotating rod (2) is fixedly connected to two connecting plates (8), the connecting plates (8) correspond to the mounting plates (6) one by one, the mounting plates (6) are passed through and rotatably connected to the rotating screw (7), and the rotating rod (2) is rotatably connected to the base rod (1) via the rotating screw (7).

4. The offshore wind farm blade conductivity measurement device according to claim 1, characterized in that: The base rod (1) is provided with a plurality of pairs of through holes (11) for passing bolts, and the plurality of pairs of through holes (11) are arranged along the length direction of the base rod (1).

5. The offshore wind farm blade conductivity measurement device according to claim 3, characterized in that: A rotating disk (9) is rotatably connected to the base rod (1), the mounting plate (6) is fixedly connected to the rotating disk (9), and a limiting mechanism (10) for limiting the rotation of the rotating disk (9) is provided on the base rod (1).

6. The offshore wind farm blade conductivity measurement device according to claim 5, characterized in that: The base rod (1) is provided with an adjustment groove (12), the arc-shaped outer wall of the rotating disk (9) is provided with a tooth groove (91) arranged along the circumference of the rotating disk (9), the limiting mechanism (10) comprises a limiting tooth block (101) slidably connected in the adjustment groove (12), a limiting spring (102) is fixedly connected between the limiting tooth block (101) and the adjustment groove (12), under the action of the limiting spring (102), the tip of the limiting tooth block (101) abuts against the tooth groove (91) and limits the rotation of the rotating disk (9), and the rotating rod (2) is provided with an adjustment component (103) for adjusting the position of the limiting tooth block (101).

7. The offshore wind farm blade conductivity measurement device according to claim 6, characterized in that: The adjustment component (103) comprises an adjustment rope (1031), one end of the adjustment rope (1031) is fixedly connected to the limit tooth block (101), one end of the rotating rod (2) away from the copper net bag (4) is fixedly connected to a fixed shaft (1032), an adjustment handle (1033) is passed through and rotatably connected to the fixed shaft (1032), and the other end of the adjustment rope (1031) is fixedly connected to the adjustment handle (1033).

8. The offshore wind farm blade conductivity measurement device according to claim 7, characterized in that: A plurality of limiting rings (104) are fixedly connected to the rotating rod (2), the plurality of limiting rings (104) are arranged at equal distances along the length direction of the rotating rod (2), and the adjusting rope (1031) is passed through the plurality of limiting rings (104).

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