Wind turbine generator power cable fixing device

Abstract

The embodiment of the utility model provides a wind turbine generator power cable fixing device, and relates to the technical field of wind turbine generators. The bearing sleeves the outer side of the power cable, and the inner ring of the bearing is fixed with the power cable; the fixing frame comprises a clamping sleeve and a fixing rod, the clamping sleeve is arranged on the outer side of the bearing and fixed to the outer ring of the bearing, one end of the fixing rod is fixedly connected with the outer side wall of the clamping sleeve, and the other end of the fixing rod is fixedly connected with a ladder stand of the wind turbine generator. By arranging the bearing and fixing the power cable and the crawling ladder, the power cable is prevented from being damaged due to large-amplitude impact while rotation of the power cable during yawing and wind facing is not affected, and the service life of the power cable is prolonged.

Description

Technical Field

[0001] This application relates to the field of wind turbine technology, and in particular to a wind turbine power cable fixing device. Background Technology

[0002] The power cable of a wind turbine is a key component that transmits the electrical energy generated by the generator to the power distribution system. A wind turbine typically consists of multiple wind turbines. These turbines convert wind energy into mechanical energy through their rotors, and then into electrical energy through the generators. The power cable transmits the electrical energy generated by these generators to converters or other electrical equipment, and then through the power distribution system to the power grid.

[0003] During actual operation, wind turbines need to yaw according to changes in wind direction. By monitoring changes in the surrounding wind direction and the current position of the turbine, the wind turbine is kept facing the wind to improve the effective utilization rate of the rotor blade's wind-receiving area, thereby maximizing the capture and conversion efficiency of wind energy. When yawing, the power cable will rotate, especially in strong winds or when the turbine vibrates excessively, causing the power cable to strike the cable sheath. Over long-term operation, this may damage the insulation performance and integrity of the cable. Utility Model Content

[0004] This application provides a wind turbine power cable fixing device to solve the problem that the power cable is easily damaged when the turbine yaws or vibrates excessively.

[0005] To achieve the above objectives, this application provides a wind turbine power cable fixing device, which adopts the following technical solution:

[0006] This application provides a wind turbine power cable fixing device, comprising: a bearing and a fixing frame;

[0007] The bearing is sleeved on the outside of the power cable, and the inner ring of the bearing is fixed to the power cable.

[0008] The fixing frame includes a sleeve and a fixing rod. The sleeve is disposed on the outside of the bearing and fixed to the outer ring of the bearing. One end of the fixing rod is fixedly connected to the outer wall of the sleeve, and the other end is fixedly connected to the ladder of the wind turbine.

[0009] Optionally, a cable protection sleeve is provided between the inner ring of the bearing and the power cable.

[0010] Optionally, the cable protective sleeve is made of polyimide.

[0011] Optionally, the bearing is a semi-circular split rolling bearing.

[0012] Optionally, the material of the crescent-shaped split rolling bearing is high-strength alloy steel.

[0013] Optionally, the wind turbine power cable fixing device further includes a bearing seal, which is disposed between the outer ring of the bearing and the bearing housing.

[0014] Optionally, the fixing rod is made of aluminum alloy.

[0015] Optionally, the wind turbine power cable fixing device further includes a reinforcing rod, one end of which is fixed to the end of the fixing rod near the sleeve; the other end of the reinforcing rod is located below the connection between the fixing rod and the ladder and is fixedly connected to the ladder.

[0016] Optionally, the clamp includes two semi-circular clamps, each clamp having a wing plate at both ends. The wing plate has a through hole, and the clamps are locked together by bolts passing through the through holes and nuts.

[0017] Optionally, the fixing rod is two L-shaped rods.

[0018] This application provides a wind turbine power cable fixing device, comprising: a bearing and a fixing frame; the bearing is sleeved on the outside of the power cable, and the inner ring of the bearing is fixed to the power cable; the fixing frame includes a clamping sleeve and a fixing rod, the clamping sleeve is disposed on the outside of the bearing and fixed to the outer ring of the bearing, one end of the fixing rod is fixedly connected to the outer wall of the clamping sleeve, and the other end is fixedly connected to the ladder of the wind turbine. This application, by setting up a bearing and fixing the power cable to the ladder, prevents damage to the power cable from large-scale impacts without affecting the rotation of the power cable during yaw and windward movement, thus extending the service life of the power cable. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Obviously, the drawings described below are some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the wind turbine power cable fixing device provided in the embodiments of this application;

[0021] Figure 2 A diagram illustrating the usage status of the wind turbine power cable fixing device provided in this application embodiment;

[0022] Figure 3 A side view of the wind turbine power cable fixing device provided in an embodiment of this application;

[0023] Figure 4This is a schematic diagram of the bearing and ferrule provided in the embodiments of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Bearing; 2-Power cable; 3-Cladle; 4-Fixing rod; 5-Ladder; 6-Cable protective sleeve; 7-Bearing seal; 8-Reinforcing rod; 9-Clamp; 10-Wing plate; 11-Bolt; 12-Nut.

[0026] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0027] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0028] Secondly, it should be noted that in the description of this application, the terms "inner" and "outer," etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0029] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] The power cable of a wind turbine is a key component that transmits the electrical energy generated by the generator to the power distribution system. A wind turbine typically consists of multiple wind turbines. These turbines convert wind energy into mechanical energy through their rotors, and then into electrical energy through the generators. The power cable transmits the electrical energy generated by these generators to converters or other electrical equipment, and then through the power distribution system to the power grid.

[0031] Yaw alignment in wind turbines refers to the automatic adjustment or control of wind turbine generators during operation based on changes in wind direction, ensuring the turbine always faces the wind to maximize wind energy capture and conversion efficiency. Wind turbines are typically equipped with wind direction sensors and yaw systems. By monitoring changes in surrounding wind direction and the turbine's current position, the yaw system automatically adjusts the turbine's direction based on signals from the wind direction sensor when the wind direction changes, aligning the turbine with the wind and maximizing wind energy capture. Maintaining the turbine's orientation towards the wind improves the effective utilization of the rotor blade's wind-receiving area, increasing power generation efficiency and maximizing electricity output. Yaw alignment also protects the wind turbine system from extreme wind speeds and changes in wind direction, ensuring the safe and stable operation of the turbine and equipment.

[0032] To ensure smooth power transmission, the position of the power cable needs to be adjusted when the wind turbine turns during yaw. When yawing, the power cable rotates with the wind turbine. Especially in strong winds, excessive yaw or excessive vibration of the unit can cause the power cable to hit the cable sheath. Over a long period of operation, this may damage the insulation performance and integrity of the cable.

[0033] Therefore, the inventors proposed a wind turbine power cable fixing device to solve the problem that the power cable is easily damaged when the turbine yaws or vibrates too much.

[0034] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0035] Figure 1 A schematic diagram of the structure of the wind turbine power cable fixing device; Figure 2 This is a diagram showing the usage status of the power cable fixing device for wind turbine units. Figure 3 A side view of the wind turbine power cable fixing device; Figure 4 This is a top view of the wind turbine power cable fixing device.

[0036] Reference Figures 1 to 4 As shown in the figure, an embodiment of this application provides a wind turbine power cable fixing device, including: a bearing 1 and a fixing frame.

[0037] Bearing 1 is sleeved on the outside of power cable 2, and the inner ring of bearing 1 is fixed to power cable 2.

[0038] Specifically, bearing 1 can reduce the friction generated by the rotation of power cable 2, improve the torsional capacity of power cable 2, make the rotation smoother and more stable to adapt to the rotation when the wind turbine yaws against the wind, and reduce the vibration generated when power cable 2 rotates with the wind turbine.

[0039] The fixing frame includes a sleeve 3 and a fixing rod 4. The sleeve 3 is located on the outside of the bearing 1 and fixed to the outer ring of the bearing 1. One end of the fixing rod 4 is fixedly connected to the outer wall of the sleeve 3, and the other end is fixedly connected to the ladder 5 of the wind turbine.

[0040] Specifically, the mounting bracket is used to fix the position of the power cable 2, preventing the power cable 2 from hitting the cable sheath when yawing in strong winds or when the unit vibrates excessively, reducing wear on the power cable 2, extending the service life of the power cable 2, reducing swaying of the power cable 2 or interference from external forces, and ensuring the safe and stable operation of the wind turbine generator system.

[0041] This application provides a wind turbine power cable fixing device, which, by setting a bearing 1 and fixing the power cable 2 to the ladder 5, prevents the power cable 2 from being damaged by large-scale impacts without affecting the rotation of the power cable 2 when yawing against the wind, extends the service life of the power cable 2, and ensures the safe and stable operation of the wind turbine system.

[0042] In some embodiments, a cable protection sleeve 6 is provided between the inner ring of the bearing 1 and the power cable 2.

[0043] Specifically, the cable sheath is a tubular protective sleeve that is fitted over the power cable 2 to prevent mechanical damage and wear. By installing the cable protective sleeve 6, the service life of the power cable 2 can be effectively extended, external environmental damage to the power cable 2 can be prevented, and the safety and reliability of the power cable 2 can be improved.

[0044] In some embodiments, the cable protective sleeve 6 is made of polyimide.

[0045] Specifically, polyimide maintains stable performance at high temperatures and can withstand high-temperature operating environments, effectively protecting the power cable 2 from the effects of high temperatures; in addition, polyimide has high mechanical strength and wear resistance, effectively protecting the cable from external physical damage; at the same time, polyimide has good electrical insulation properties, ensuring that the cable will not short-circuit during use.

[0046] In some embodiments, the bearing 1 described above is a semi-circular split rolling bearing.

[0047] Specifically, the semi-circular split rolling bearing has a relatively stable design structure, which can withstand large radial and axial loads and stably support the power cable 2. The semi-circular split rolling bearing 1 adopts the design of a rolling bearing, which makes the semi-circular split rolling bearing have high rotational accuracy, ensuring that the cable remains stable during rotation and will not wobble or deviate.

[0048] The split structure design of the semi-circular split rolling bearing makes installation more convenient and quick, effectively saving installation time and labor costs; the semi-circular split rolling bearing has a stable and reliable structure, a relatively long maintenance cycle, reduces maintenance frequency and workload, and lowers maintenance costs.

[0049] By using a semi-circular split rolling bearing, the power cable 2 can be effectively supported and protected, reducing the stress on the cable and extending its service life.

[0050] In some embodiments, the material of the above-mentioned semi-circular split rolling bearing is high-strength alloy steel.

[0051] Specifically, high-strength alloy steel has high tensile strength and hardness, enabling bearing 1 to withstand large loads and torques; after appropriate heat treatment and surface treatment, alloy steel has good wear resistance, which can reduce friction and wear and extend the service life of bearing 1.

[0052] High-strength alloy steel possesses excellent toughness, making it resistant to breakage under impact or vibration, thus ensuring the safe and reliable operation of bearing 1. Furthermore, it exhibits high thermal stability and high-temperature resistance, maintaining good mechanical properties even in high-temperature environments. The high-strength alloy steel meets the characteristics of bearing 1, which requires it to withstand heavy loads and high rotational speeds, ensuring its stability, durability, and reliability.

[0053] In some embodiments, a bearing seal 7 is also included, which is disposed between the outer ring of the bearing 1 and the bearing housing.

[0054] Specifically, bearing 1 typically includes: an inner ring, an outer ring, rolling elements, a cage, and lubricant, wherein:

[0055] Inner ring: Located inside bearing 1, fixed to the shaft, and usually has the inner bore of a rolling bearing. The inner ring can be a single piece or assembled from multiple parts.

[0056] Outer ring: Located outside bearing 1, fixed to the machine tool base, and usually has the outer bore of a rolling bearing. The outer ring can be a single piece or assembled from multiple parts.

[0057] Rolling elements: Crescent-shaped rolling bearings typically use cylindrical rollers located between the inner and outer rings to carry the radial and axial loads of the bearing.

[0058] Cage (retainer): Used to maintain the relative position of rolling elements and prevent them from colliding with each other and falling off.

[0059] Lubricant: Used to provide lubrication and cooling during operation, reduce friction and wear, and extend the service life of bearing 1.

[0060] The bearing seal 7 can prevent dust and contaminants from entering the bearing 1, protect the bearing 1 from the influence of the external environment, reduce the direct impact of the external medium on the bearing 1, reduce friction and wear, and improve the working efficiency and life of the bearing 1.

[0061] The bearing seal 7 can effectively seal the grease, forming a lubricating film inside the bearing 1, maintaining stable lubrication performance, preventing grease leakage that could cause the bearing 1 to malfunction or be damaged, reducing the failure rate and maintenance frequency of the bearing 1, and thus reducing maintenance costs.

[0062] The bearing seal can also prevent external air and moisture from entering the bearing 1, reduce the oxidation and deterioration of the lubricant, maintain the lubrication effect, thereby reducing the frictional resistance of the bearing 1, reducing energy consumption, and improving the working efficiency of the bearing 1.

[0063] In some embodiments, the fixing rod 4 is made of aluminum alloy.

[0064] Specifically, aluminum alloy is lighter than traditional materials such as steel, which can reduce the overall weight of the equipment, lower transportation and handling costs, and improve the operability of the fixing rod 4. At the same time, aluminum alloy has good machinability and is easy to form, weld, cut and other processing, which is beneficial to the processing and assembly of the fixing rod 4, improving production efficiency and flexibility.

[0065] Furthermore, a dense oxide film can be formed on the surface of the aluminum alloy fixing rod 4, which has a certain degree of anti-oxidation and anti-corrosion ability, which can increase the service life of the fixing rod 4 to a certain extent and reduce maintenance costs.

[0066] In some embodiments, the above also includes a reinforcing rod 8, one end of which is fixed to the end of the fixing rod 4 near the sleeve 3; the other end of the reinforcing rod 8 is disposed below the connection between the fixing rod 4 and the ladder 5, and is fixedly connected to the ladder 5.

[0067] Specifically, the reinforcing rod 8 can be fixed by welding or by bolts 11 to make it a detachable connection.

[0068] By adding reinforcing rod 8, the fixed rod 4, reinforcing rod 8 and ladder 5 form a triangular stable structure, which has good stability, can effectively resist external forces and deformation, and improve the overall stability and seismic performance of the structure.

[0069] By using triangular reinforcement, the load on the structure can be distributed more evenly, reducing local stress concentration and improving the overall load-bearing capacity of the structure. The reinforcement rod 8 has a simple form and is relatively easy and quick to install, which can reduce installation time and difficulty and improve installation efficiency.

[0070] In some embodiments, the above-mentioned ferrule 3 includes two semi-circular clamps 9, with wing plates 10 at both ends of the clamps 9. The wing plates 10 have through holes, and the clamps 9 are locked and fixed to each other by bolts 11 passing through the through holes and nuts 12.

[0071] Specifically, the bolt 11 fixing method allows the ferrule 3 to be used with various types of power cables 2 without being limited by their diameter, thus having higher adaptability; at the same time, the detachable design between the two semi-circular clamps 9 makes it easier to install and replace the ferrule 3 without moving the power cable 2.

[0072] In some embodiments, the aforementioned fixing rod 4 is two L-shaped rods.

[0073] Specifically, the lengths of the horizontal and vertical bars of the L-shaped rods can be flexibly adjusted according to the width of the ladder 5 and the specific requirements of the fixed distance between the power cable 2 and the ladder 5. Using two L-shaped rods as fixing rods 4 has the advantages of high stability, firm connection, simple installation, maintainability, and wide applicability, effectively saving installation time. With the help of the clamp 3, the power cable 2 can be fixed to one side of the ladder 5 without affecting the use of the ladder 5 by the staff.

[0074] Other embodiments of this application will readily come to mind when considering the specification and practicing the technical solutions disclosed herein.

[0075] This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this application.

[0076] The description and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims. It should be understood that this application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A wind turbine power cable fixing device, characterized in that, include: Bearings, mounting brackets, and bearing seals; The bearing is sleeved on the outside of the power cable, and the inner ring of the bearing is fixed to the power cable; the inner ring of the bearing rotates synchronously with the power cable; the bearing is a semi-circular split rolling bearing. The fixing frame includes a sleeve and a fixing rod. The sleeve is disposed on the outside of the bearing and fixed to the outer ring of the bearing. One end of the fixing rod is fixedly connected to the outer wall of the sleeve, and the other end is fixedly connected to the ladder of the wind turbine. The bearing seal is disposed between the outer ring of the bearing and the bearing housing, forming a lubricating film inside the bearing to prevent grease leakage that could cause the bearing to malfunction or be damaged.

2. The wind turbine power cable fixing device according to claim 1, characterized in that, A cable protection sleeve is provided between the inner ring of the bearing and the power cable.

3. The wind turbine power cable fixing device according to claim 2, characterized in that, The cable protective sleeve is made of polyimide.

4. The wind turbine power cable fixing device according to claim 1, characterized in that, The material of the crescent-shaped split rolling bearing is high-strength alloy steel.

5. The wind turbine power cable fixing device according to claim 1, characterized in that, The fixing rod is made of aluminum alloy.

6. The wind turbine power cable fixing device according to claim 1, characterized in that, It also includes a reinforcing rod, one end of which is fixed to the end of the fixing rod near the sleeve; the other end of the reinforcing rod is located below the connection between the fixing rod and the ladder, and is fixedly connected to the ladder.

7. The wind turbine power cable fixing device according to claim 1, characterized in that, The clamp includes two semi-circular clamps, each clamp having a wing plate at both ends. The wing plate has a through hole, and the clamps are locked together by bolts passing through the through holes and nuts.

8. The wind turbine power cable fixing device according to claim 1, characterized in that, The fixing rod consists of two L-shaped rods.

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