Wind turbine generator set and its cable torsion protection system

Abstract

The present invention discloses a twisted cable protection system for protecting cables in a tower, and the twisted cable protection system includes a connecting rope, a separator plate, a limit swing bracket and a swing arm mechanism. The connecting rope is fixed on the nacelle and extends into the tower. The connecting rope connects at least two separator plates in series along the axial direction of the separator plate, and the separator plate is provided with a plurality of accommodating holes that penetrate the separator plates. The swing limit bracket is sleeved outside the separator plate to limit lateral swinging, and the swing arm mechanism is connected to the separator plate at the bottom. The swing arm mechanism can swing under the pull of the connecting rope and limit the rotation of the separator plate connected thereto. The present invention also discloses a wind turbine generator set, including the above-mentioned twisted cable protection system. The above-mentioned wind turbine generator set and its twisted cable protection system can constrain the position of the cable, avoid multiple cables from twisting together during the yaw process, reduce the friction between the power cables, reduce the force on the cable itself, limit the lateral movement of the cable, and try to avoid the twisting, entanglement and bundling of the cables.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly to a wind turbine generator set and a cable twisting protection system thereof. Background Art

[0002] A wind turbine generator set mainly includes a tower barrel, a wind wheel, a nacelle, a main shaft, a yaw system, a gearbox, a high-speed shaft, a generator, and a control system, etc. Among them, the yaw system, the gearbox, and the generator are located in the nacelle. The technical principle of a wind turbine generator is that the wind wheel converts wind energy into rotational mechanical energy, the main shaft transmits the mechanical energy of the wind wheel to the gearbox, the gearbox converts the low-speed mechanical energy of the main shaft into high-speed mechanical energy suitable for the generator and inputs it to the generator through the high-speed shaft, and the generator is used to convert mechanical energy into electrical energy.

[0003] At present, the technology of wind turbine generator sets is becoming increasingly mature, the single-unit capacity is getting larger and larger, and the cable layout in the tower barrel of wind turbine generator sets is more complex. During the yaw operation of the unit, the cables are prone to entanglement, which easily leads to large mutual inductance and uneven impedance between the cables, reducing the quality of power transmission. At the same time, the entanglement between the cables will also cause abrasion, increasing the operation and maintenance cost. Summary of the Invention

[0004] Based on this, in view of the problem that the cables are prone to entanglement during the yaw operation of the unit, it is necessary to provide a wind turbine generator set and a cable twisting protection system thereof.

[0005] A cable twisting protection system for protecting the cables in the tower barrel, the cable twisting protection system includes:

[0006] Connecting ropes, fixed on the nacelle and extending into the tower barrel, at least two of the connecting ropes are arranged at intervals;

[0007] Partition discs, at least two of the partition discs are arranged at intervals, the connecting ropes axially connect at least two of the partition discs, and a plurality of accommodation holes penetrating the partition discs are provided on the partition discs, and the accommodation holes are used for the cables to pass through;

[0008] Swing limiting brackets, sleeved outside the partition discs for limiting the lateral swing of the cables during twisting; and

[0009] Swing arm mechanisms, connected to the bottom partition disc, and during the twisting of the cables, the swing arm mechanisms swing under the pulling of the connecting ropes and limit the self-rotation of the partition discs connected thereto.

[0010] In one embodiment, the partition disc includes an outer ring and an inner ring, the outer ring and the inner ring are detachably connected, and the outer ring and the inner ring enclose the accommodation hole.

[0011] In one embodiment, the inner ring is provided with a first receiving groove, and the outer ring is provided with a corresponding second receiving groove. The first receiving groove and the second receiving groove define the receiving hole.

[0012] In one embodiment, the inner ring includes at least two inner segments, and at least two of the inner segments are sequentially detachably spliced to form the inner ring; and / or

[0013] The outer ring includes at least two outer segments, and at least two of the outer segments are sequentially detachably spliced to form the outer ring.

[0014] In one embodiment, the separating disc further includes a reinforcing plate, and the reinforcing plate connects the outer ring and the inner ring.

[0015] In one embodiment, the separating disc further includes a sheath. The sheath is installed in the receiving hole, and both ends of the sheath are provided with protrusions to prevent it from loosening out of the receiving hole.

[0016] In one embodiment, it further includes a spacer ring stop. The spacer ring stop is installed on the connecting rope, and the spacer ring stop is located at the bottom of the separating disc.

[0017] In one embodiment, the swing limiting bracket includes a fixed frame, a fixing plate and a limiting cylinder. The fixing plate is installed on the fixed frame, the limiting cylinder is installed on the fixing plate, and the separating disc is arranged in the limiting cylinder to limit the lateral swing of the cable during torsion.

[0018] In one embodiment, the swing arm mechanism includes a mounting frame, a swing arm and a connecting shaft. The swing arm is rotatably installed on the mounting frame, the connecting shaft is rotatably installed on the swing arm, and the connecting shaft is fixedly connected to the separating disc at the bottom.

[0019] A wind turbine generator, comprising:

[0020] The cable torsion protection system according to any one of the above.

[0021] The above-mentioned wind turbine generator set and its twisted cable protection system, the separator plate is provided with a receiving hole for the cable to pass through, the cable is passed through the receiving hole, and the multiple receiving holes separate the multiple cables, which can constrain the position of the cables, avoid the multiple cables from twisting together during the yaw process, reduce the friction between the power cables, and avoid the wear of the cables. At least two separator plates are arranged at intervals, so that the cable can be twisted evenly during the rotation process. The connecting rope can reduce the stress on the cable itself and extend the service life of the cable. The swing limit bracket and the swing arm mechanism at the bottom can limit the lateral movement of the cable and reduce the swing of the cable. During the torsion of the cable, the swing arm mechanism swings under the pull of the connecting rope and limits the rotation of the separator plate connected to it. During the torsion of the cable, the separator plate at the bottom cannot rotate, which can minimize the twisting and entanglement of the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 is a schematic structural diagram of a twist cable protection system in one embodiment;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the lock buckle and shackle installed at the end of the middle connecting rope;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of the middle partition plate;

[0026] Figure 4 for Figure 3 A top view of the separator plate shown;

[0027] Figure 5 for Figure 3 Schematic diagram of the structure of the middle and outer segments;

[0028] Figure 6 for Figure 3 Schematic diagram of the structure of the middle inner segment;

[0029] Figure 7 for Figure 3 Schematic diagram of the structure of the middle reinforcement plate;

[0030] Figure 8 for Figure 4 Sectional view along line AA;

[0031] Figure 9 for Figure 1 A schematic diagram of installing a spacer ring buckle at the bottom of the separation plate;

[0032] Figure 10is Figure 1 Structural schematic diagram of the middle limit swing bracket;

[0033] Figure 11 is Figure 10 Cross-sectional view of the middle limit cylinder;

[0034] Figure 12 is Figure 1 Structural schematic diagram of the connection bottom separating disc of the swing arm mechanism in the middle;

[0035] Figure 13 is Figure 12 Partial enlarged view at A in the middle.

[0036] Reference numerals:

[0037] 10 - connecting rope, 11 - buckle, 12 - shackle, 122 - main body, 124 - connecting piece, 13 - pressing joint, 20 - separating disc, 21 - accommodating hole, 22 - overlapping part, 23 - connecting hole, 24 - first accommodating groove, 25 - second accommodating groove, 210 - outer ring, 211 - outer segment, 212 - mounting block, 213 - first mounting hole, 220 - inner ring, 221 - inner segment, 222 - connecting block, 223 - first fixing hole, 230 - reinforcing plate, 231 - second fixing hole, 232 - second mounting hole, 233 - through hole, 240 - sheath, 242 - protrusion, 250 - connecting pipe, 30 - swing limit bracket, 310 - fixing bracket, 320 - fixing plate, 330 - limit cylinder, 332 - buffer block, 40 - swing arm mechanism, 410 - mounting bracket, 411 - sleeve, 412 - rotating shaft, 413 - first bearing seat, 420 - swing arm, 430 - connecting shaft, 431 - second bearing seat, 440 - extension bracket, 50 - spacer ring stop. Detailed implementation manners

[0038] To make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementations disclosed below.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manners.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention.

[0041] Please refer to Figure 1 , a wind turbine in an embodiment includes a cable torsion protection system for protecting the cables inside the tower barrel. Specifically, the cable torsion protection system includes a connecting rope 10, a dividing plate 20, a swinging limit bracket 30, and a swing arm mechanism 40.

[0042] Please also refer to Figure 2 , the connecting rope 10 is fixed to the nacelle and extends into the tower barrel, and at least two connecting ropes 10 are arranged at intervals. In one embodiment, a buckle 11 is provided at one end of the connecting rope 10, and a shackle 12 is detachably connected to the buckle 11, and the shackle 12 is installed on the nacelle to fix one end of the connecting rope 10 to the nacelle.

[0043] On the basis of the above embodiment, further, the rope end of the connecting rope 10 is bent and wound and then fixed by a pressing joint 13 to form the buckle 11. The shackle 12 includes a U-shaped main body 122 and a connecting member 124. The buckle 11 is sleeved on the main body 122, and then the two ends of the main body 122 are detachably connected by the connecting member 124 to detachably connect the buckle 11 and the shackle 12. In one embodiment, the connecting rope 10 can be a steel wire rope, and the connecting member 124 is a connecting bolt.

[0044] Please also refer to Figure 3 and Figure 4 , the dividing plate 20 is used to separate the cables. At least two dividing plates 20 are arranged at intervals. At least two connecting ropes 10 all extend longitudinally, and at least two dividing plates 20 are connected in series along the axial direction of the dividing plate 20. The dividing plate 20 is provided with a receiving hole 21 penetrating through the dividing plate 20. The receiving hole 21 extends along the axial direction of the dividing plate 20, and the receiving hole 21 is used for the cable to pass through. The number of the receiving holes 21 is multiple, and the multiple receiving holes 21 are distributed at intervals around the center of the dividing plate 20.

[0045] In one embodiment, the number of the connecting ropes 10 is four, and the connecting ropes 10 are symmetrically arranged about the center of the dividing plate 20 so that the dividing plate 20 is evenly stressed. Of course, in other embodiments, the number of the connecting ropes 10 can be specifically set according to needs, as long as the connecting ropes 10 are symmetric about the center of the dividing plate 20. Multiple dividing plates 20 are evenly distributed on the connecting rope 10 so that the cables can be evenly twisted during rotation. The number of the dividing plates 20 can be specifically set according to the length of the connecting rope 10, and one dividing plate 20 is arranged at each fixed distance.

[0046] In one embodiment, the accommodation holes 21 are evenly distributed around the center of the partition disc 20. When cables are threaded through the accommodation holes 21, the relative spatial positions are symmetrical, the mutual inductance between the cables is equal, the line impedance is equal, and the unbalanced current of the cables is smaller. The accommodation holes 21 are similar to regular triangular holes, and three cables are arranged in a pyramid shape within the accommodation holes 21, balancing the electromagnetic fields of the cables, making the cables approach a pure resistance, reducing the line inductive reactance, and improving the cable transmission quality.

[0047] It can be understood that in other embodiments, the shape of the accommodation holes 21 can be specifically set as needed, such as square, hexagonal holes, etc., to facilitate the balance of the electromagnetic fields of the cables. The number of cables threaded through the accommodation holes 21 can be specifically set as needed. For example, only one cable can be threaded through the accommodation holes 21.

[0048] In one embodiment, the partition disc 20 includes an outer ring 210 and an inner ring 220. The outer ring 210 and the inner ring 220 are detachably connected, and the outer ring 210 and the inner ring 220 enclose the accommodation holes 21.

[0049] Please refer to Figure 5 and Figure 6 , specifically, the outer ring 210 and the inner ring 220 are both provided with overlapping portions 22. The overlapping portions 22 of the outer ring 210 and the inner ring 220 are vertically offset from each other. When the outer ring 210 and the inner ring 220 are connected, the overlapping portion 22 of the outer ring 210 overlaps on the overlapping portion 22 of the inner ring 220, enabling quick positioning of the outer ring 210 and the inner ring 220. The overlapping portions 22 of the outer ring 210 and the inner ring 220 are both provided with connection holes 23, and threaded connectors are threaded through the connection holes 23 to achieve the detachable connection of the outer ring 210 and the inner ring 220. In one embodiment, the threaded connector is a connecting bolt.

[0050] In one embodiment, the inner ring 220 is provided with a first accommodation groove 24, and the outer ring 210 is provided with a corresponding second accommodation groove 25. The first accommodation groove 24 and the second accommodation groove 25 enclose the accommodation holes 21. It can be understood that in other embodiments, it can also be that the inner ring 220 is provided with an accommodation groove, and the inner wall of the outer ring 210 closes the opening of the accommodation groove to enclose the accommodation holes 21. Or, the inner wall of the outer ring 210 is provided with an accommodation groove, and the outer wall of the inner ring 220 seals the opening of the accommodation groove to enclose the accommodation holes 21.

[0051] Please refer to Figure 8 , in one embodiment, the outer ring 210 includes at least two outer segments 211, and the at least two outer segments 211 are sequentially detachably spliced to form the outer ring 210. The outer ring 210 is formed by splicing at least two outer segments 211, facilitating the insertion of cables into the accommodation holes 21 and the removal of the cables within the accommodation holes 21. In this embodiment, the number of outer segments 211 is two, and the outer segments 211 are semi-circular rings.

[0052] On the basis of the above embodiments, further, mounting blocks 212 are provided at both ends of the outer segment 211. When two outer segments 211 are spliced, two adjacent mounting blocks 212 on different outer segments 211 are overlapped in a staggered manner, and the overlapped mounting blocks 212 are connected by threaded connectors, so as to connect two adjacent outer segments 211. In this embodiment, the mounting blocks 212 at both ends of the outer segment 211 are staggered up and down, which can facilitate the positioning and connection of the outer segment 211. The threaded connector can be a connecting bolt.

[0053] In one embodiment, the inner ring 220 includes at least two inner segments 221, and the at least two inner segments 221 are sequentially detachably spliced to form the inner ring 220. The inner ring 220 is formed by splicing at least two inner segments 221, which makes it easy to install the external cable into the inner ring 220 and facilitates the extraction of the cable in the inner ring 220, without having to penetrate the inner ring 220 or extract the cable from the inner ring 220 entirely from the upper or lower part. In this embodiment, the number of the inner segments 221 is two, and the inner segments 221 are semi-circular rings.

[0054] On the basis of the above embodiments, further, connection blocks 222 are provided at both ends of the inner segment 221. When multiple inner segments 221 are sequentially spliced, two adjacent connection blocks 222 on different inner segments 221 are overlapped in a staggered manner, and the overlapped connection blocks 222 are connected by threaded connectors, so as to connect two adjacent inner segments 221. In this embodiment, the connection blocks 222 at both ends of the inner segment 221 are staggered up and down, which can facilitate the positioning and connection of the inner segment 221. The threaded connector can be a connecting bolt.

[0055] In one embodiment, the partition disc 20 further includes a reinforcing plate 230. The reinforcing plate 230 connects the outer ring 210 and the inner ring 220, and the reinforcing plate 230 strengthens the connection between the outer ring 210 and the inner ring 220 to prevent the separation between the outer ring 210 and the inner ring 220. The reinforcing plate 230 is provided with a groove for avoiding and accommodating the hole 21, and the shape of the groove corresponds to that of the accommodating hole 21, which is convenient for the cable in the accommodating hole 21 to pass through.

[0056] In this embodiment, the number of the reinforcing plates 230 is two, and the two reinforcing plates 230 are respectively arranged on the upper and lower sides of the outer ring 210 and the inner ring 220. Both sides of the outer ring 210 and the inner ring 220 are connected by the reinforcing plates 230 to ensure uniform force. The reinforcing plate 230 is provided with a through hole 233 corresponding to the connection hole 23, and the threaded fastener connecting the overlapping part 22 of the inner ring 220 and the outer ring 210 passes through the corresponding through hole 233. On the one hand, it can avoid the threaded fastener, and on the other hand, it can also realize the connection between the reinforcing plate 230 and the outer ring 210 and the inner ring 220.

[0057] Please refer to Figures 3 to 7, on the basis of the above embodiments, further, a first fixing hole 223 is formed in the inner ring 220, and a corresponding second fixing hole 231 is formed in the reinforcing plate 230. A threaded fastener is passed through the second fixing hole 231 and the first fixing hole 223 to connect the reinforcing plate 230 to the inner ring 220. Among them, the number of the second fixing holes 231 is more than that of the first fixing holes 223, that is, the second fixing holes 231 have reserved holes. On the one hand, the reserved holes can facilitate the selection of the second fixing holes 231 opposite to the first fixing holes 223 as needed, and then pass the threaded fasteners through, which is convenient for installing the reinforcing plate 230 on the inner ring 220; on the other hand, the reserved holes can be used for the threaded fasteners connecting the ends of two adjacent inner segments 221 to pass through.

[0058] On the basis of the above embodiments, further, a first mounting hole 213 is formed in the outer ring 210, and a corresponding second mounting hole 232 is formed in the reinforcing plate 230. A threaded fastener is passed through the second mounting hole 232 and the first mounting hole 213 to connect the reinforcing plate 230 to the outer ring 210.

[0059] In one embodiment, some of the first mounting holes 213 and the second mounting holes 232 do not pass through threaded fasteners, but pass through connecting pipes 250. Both ends of the connecting pipes 250 are locked by nuts. The connecting rope 10 is passed through the connecting pipes 250 to connect the connecting rope 10 in series with the separating disks 20. The user can reserve the first mounting holes 213 and the second mounting holes 232 at different positions as needed, and then pass through the connecting pipes 250. The connecting rope 10 can pass through different positions on the outer ring 210, and the position of the connecting rope 10 can be adjusted flexibly.

[0060] In one embodiment, the separating disk 20 further includes a sheath 240. The sheath 240 is installed in the receiving hole 21, and the cable is passed through the sheath 240. The sheath 240 can separate the cable from the side wall of the receiving hole 21 to prevent the cable from rubbing against the side wall of the receiving hole 21 during the twisting process, resulting in cable wear. Further, protrusions 242 are provided at both ends of the sheath 240, and the protrusions 242 abut against the reinforcing plate 230. The protrusions 242 can prevent the sheath 240 from loosening out of the receiving hole 21. Specifically, the sheath 240 can be a rubber sleeve.

[0061] Please refer to Figure 9 , in one embodiment, the cable twisting protection system further includes a spacer ring stop 50. The spacer ring stop 50 is installed on the connecting rope 10. The spacer ring stop 50 is located at the bottom of the separating disk 20. The spacer ring stop 50 can limit the position of the separating disk 20 on the connecting rope 10. The relative position of the separating disk 20 on the connecting rope 10 is adjustable to ensure the uniformity of the positions between multiple separating disks 20, which is beneficial to the uniform twisting of the cable. After the position of the separating disk 20 is adjusted, the spacer ring stop 50 is installed on the connecting rope 10 and located at the bottom of the separating disk 20 to fix the position of the separating disk 20.

[0062] Please refer to Figure 1 and Figure 10 , the swing limit bracket 30 is used to be installed inside the tower barrel. The swing limit bracket 30 is sleeved outside the partition plate 20 to limit the lateral swing of the cable during the torsion process. In one embodiment, the swing limit bracket 30 includes a fixed frame 310, a fixed plate 320 and a limit cylinder 330. The fixed frame 310 is used to be installed on the tower barrel. The fixed plate 320 is installed on the fixed frame 310. The limit cylinder 330 is installed on the fixed plate 320. The partition plate 20 is arranged inside the limit cylinder 330 to limit the lateral swing of the cable during the torsion process. The rod body of the fixed frame 310 can be used for workers to walk, which is convenient for workers to enter the fixed plate 320 to disassemble, assemble and overhaul the partition plate 20 inside the limit cylinder 330.

[0063] Please refer to together Figure 11 , on the basis of the above embodiment, further, a buffer block 332 is arranged on the inner wall of the limit cylinder 330. The buffer block 332 can buffer the lateral swing of the partition plate 20. On the one hand, it can avoid the partition plate 20 being damaged due to direct hard impact with the limit cylinder 330. On the other hand, it can buffer and consume energy for the swing of the partition plate 20, reduce the swing amplitude of the partition plate 20 and make the partition plate 20 tend to be stable. Specifically, the buffer block 332 can be made of rubber.

[0064] Please refer to Figure 1 and Figure 12 , the swing arm mechanism 40 is installed inside the tower barrel. The swing arm mechanism 40 is connected to the bottom partition plate 20. During the cable torsion process, the swing arm mechanism 40 swings under the pulling of the connecting rope 10, and limits the self-rotation of the partition plate 20 connected to the swing arm mechanism 40.

[0065] In one embodiment, the swing arm mechanism 40 includes a mounting frame 410, a swing arm 420 and a connecting shaft 430. The mounting frame 410 is installed inside the tower barrel. The swing arm 420 is rotatably installed on the mounting frame 410 and can swing under the pulling of the connecting rope 10. The connecting shaft 430 is rotatably installed on the swing arm 420. The connecting shaft 430 is fixedly connected to the partition plate 20.

[0066] For the above swing arm mechanism 40, during the cable torsion process, the connecting rope 10 will pull the partition plate 20 to move up and down due to torsion. The up and down movement of the partition plate 20 can drive the swing arm 420 to rotate, realizing adaptation to the up and down movement of the cable and the connecting rope 10. At the same time, the swing arm mechanism 40 can also limit the lateral swing of the partition plate 20. During the cable torsion process, the partition plate 20 will be driven to torsion. The partition plate 20 is connected to the swing arm 420 through the rotating shaft 412. The swing arm 420 will limit the self-rotation of the partition plate 20, thereby avoiding the self-rotation of the entire cable torsion protection system. Therefore, the cable torsion and winding can be slowed down.

[0067] Based on the above embodiments, further, a sleeve 411 is provided on the mounting bracket 410. The rotating shaft 412 passes through the sleeve 411, and the rotating shaft 412 is rotatably connected to the swing arm 420, so that the swing arm 420 is rotatably mounted on the mounting bracket 410. In one embodiment, a bearing is mounted at the end of the rotating shaft 412. The first bearing seat 413 is connected to the swing arm 420 and limits the bearing within the first bearing seat 413, realizing the detachable connection between the swing arm 420 and the rotating shaft 412.

[0068] Please refer to Figure 13 simultaneously. Based on the above embodiments, further, the number of the connecting shafts 430 is two. The two connecting shafts 430 are symmetrically arranged about the axis of the separating disk 20, and both of the two connecting shafts 430 are rotatably connected to the swing arm 420. Specifically, a bearing is mounted at the end of the connecting shaft 430. The second bearing seat 431 is connected to the swing arm 420 and limits the bearing within the second bearing seat 431, realizing the rotational connection between the connecting shaft 430 and the swing arm 420.

[0069] In one embodiment, three positioning holes (not labeled in the figure) are axially spaced apart on the connecting shaft 430. The threaded fasteners connecting the connecting reinforcing plate 230 and the inner ring 220, the threaded fasteners connecting the outer ring 210 and the inner ring 220, and the threaded fasteners connecting the connecting reinforcing plate 230 and the outer ring 210 are sequentially passed through the three positioning holes, realizing the fixed connection between the connecting shaft 430 and the separating disk 20, which can simplify the structure of the separating disk 20 and reduce the volume of the separating disk 20.

[0070] In one embodiment, the swing arm mechanism 40 further includes an extension bracket 440. The extension bracket 440 is connected to the mounting bracket 410 and is mounted on the tower barrel. The rod bodies of the mounting bracket 410 and the extension bracket 440 can be used for workers to walk, which is convenient for workers to install the swing arm 420 and is also convenient for the disassembly and assembly of the separating disk 20 and the swing arm 420.

[0071] For the above wind turbine generator and its cable torsion protection system, the separation disc 20 is provided with accommodation holes 21 for the cable to pass through. The cable passes through the accommodation holes 21, and the multiple accommodation holes 21 separate multiple cables, which can restrict the position of the cables, prevent the multiple cables from twisting together during yaw, reduce the abrasion between the power cables, and avoid wearing the cables. The cables are arranged in a triangular pattern within the accommodation holes 21, which not only reduces the abrasion between the cables but also improves the cable transmission quality. At least two separation discs 20 arranged at intervals enable the cables to twist evenly during rotation. The connecting rope 10 can reduce the stress on the cables themselves and extend the service life of the cables. The swing limit bracket 30 and the swing arm mechanism 40 at the bottom can limit the lateral movement of the cables and reduce the swing of the cables. During the cable torsion process, the swing arm mechanism 40 swings under the pull of the connecting rope 10 and limits the self-rotation of the separation disc 20 connected thereto. During the cable torsion process, the separation disc 20 at the bottom cannot rotate, which can slow down the cable torsion, winding, and bundling.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A cable twisting protection system for protecting cables inside a tower barrel, characterized in that, The cable torsion protection system includes: Connecting ropes, which are fixed to the nacelle and extend into the tower barrel, and at least two of the connecting ropes are arranged at intervals from each other; Partition disks, at least two of the partition disks are arranged at intervals from each other, the connecting ropes are connected in series with at least two of the partition disks along the axial direction of the partition disks, and a plurality of accommodation holes penetrating through the partition disks are provided on the partition disks, and the accommodation holes are used for the cables to pass through; a plurality of the accommodation holes are distributed at intervals around the center of the partition disk; A swing limiting bracket, which is sleeved outside the partition disk for limiting the lateral swing of the cable during torsion; and A swing arm mechanism, which is connected to the bottom partition disk, and during the torsion of the cable, the swing arm mechanism swings under the pulling of the connecting rope and limits the self-rotation of the partition disk connected thereto; The swing arm mechanism includes a mounting frame, a swing arm and a connecting shaft, the swing arm is rotatably mounted on the mounting frame, the connecting shaft is rotatably mounted on the swing arm, and the connecting shaft is fixedly connected to the bottom partition disk.

2. The cable torsion protection system according to claim 1, characterized in that, The partition disk includes an outer ring and an inner ring, the outer ring and the inner ring are detachably connected, and the outer ring and the inner ring enclose the accommodation hole.

3. The twist cable protection system according to claim 2, characterized in that, The inner ring is provided with a first accommodation groove, the outer ring is provided with a corresponding second accommodation groove, and the first accommodation groove and the second accommodation groove enclose the accommodation hole.

4. The cable twisting protection system according to claim 2, wherein The inner ring includes at least two inner segments, and at least two of the inner segments are detachably spliced in sequence to form the inner ring; and / or The outer ring includes at least two outer segments, and at least two of the outer segments are detachably spliced in sequence to form the outer ring.

5. The cable twisting protection system according to claim 2, characterized in that The partition disk further includes a reinforcing plate, and the reinforcing plate connects the outer ring and the inner ring.

6. The cable torsion protection system according to claim 2, characterized in that, The partition disk further includes a sheath, the sheath is installed in the accommodation hole, and protrusions are provided at both ends of the sheath to prevent it from slipping out of the accommodation hole.

7. The twist protection system according to claim 2, characterized in that It further includes a spacer ring stop, the spacer ring stop is installed on the connecting rope, and the spacer ring stop is located at the bottom of the partition disk.

8. The cable twisting protection system according to claim 1, characterized in that, The swing limiting bracket includes a fixed frame, a fixing plate and a limiting cylinder, the fixing plate is installed on the fixed frame, the limiting cylinder is installed on the fixing plate, and the partition disk is arranged in the limiting cylinder to limit the lateral swing of the cable during torsion.

9. A wind power generating set, characterized in that, Including: The cable torsion protection system according to any one of claims 1-8.

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