Wind power variable pitch photoelectric slip ring and wind power generation equipment

Abstract

The utility model discloses a kind of wind power variable-pitch photoelectric slip rings and wind driven generators, the wind power variable-pitch photoelectric slip ring includes electrically-conductive slip ring module, smooth ring module and encoder module;Electrically-conductive slip ring module includes electrically-conductive stator structure, and electrically-conductive rotor structure is rotationally connected on electrically-conductive stator structure;Smooth ring module includes the light stator structure being set on electrically-conductive stator structure, and the light rotor structure being set on electrically-conductive rotor structure and rotating along with electrically-conductive rotor structure;Encoder module includes the encoder body being set on electrically-conductive stator structure, and the encoder rotating part being set on electrically-conductive rotor structure and rotating along with electrically-conductive rotor structure, electrically-conductive stator structure includes frame box, and support frame body can be detachably installed on the outside of frame box, the butt joint position of light stator structure and light rotor structure is set in support frame body, solve the existing contact type slip ring, there is slip ring easy to wear, signal interference is big, and the problem such as maintenance frequently.

Description

Technical Field

[0001] This utility model relates to the field of pitch slip ring technology, and in particular to a wind power pitch photovoltaic slip ring and a wind power generation device. Background Technology

[0002] In the field of wind power generation, the pitch system is a key component of wind turbine generators. Its core function is to precisely adjust the angle of the wind turbine blades, i.e., the pitch angle, in real time according to the dynamic changes in wind speed. In actual operation of the pitch system, a large number of communication signals need to be transmitted between the rotating wind turbine and the stationary nacelle to achieve precise control of the blade angle.

[0003] However, traditional pitch systems mostly use contact slip rings for communication transmission. This method has many drawbacks, such as slip ring wear, signal interference, and frequent maintenance. These problems not only increase the operating cost of the system, but also have an adverse effect on the stability and reliability of the pitch system. Utility Model Content

[0004] The purpose of this invention is to propose a wind power pitch photovoltaic slip ring and wind power generation equipment, which aims to solve the problems of existing contact slip rings, such as easy wear, large signal interference, and frequent maintenance.

[0005] In a first aspect, this utility model provides a wind turbine pitch optoelectronic slip ring, which includes a conductive slip ring module, a smoothing ring module, and an encoder module. The conductive slip ring module includes a conductive stator structure and a conductive rotor structure rotatably connected to the conductive stator structure. The smoothing ring module includes an optical stator structure disposed on the conductive stator structure and an optical rotor structure disposed on the conductive rotor structure and rotating with the conductive rotor structure. The encoder module includes an encoder body disposed on the conductive stator structure and an encoder rotating part disposed on the conductive rotor structure and rotating with the conductive rotor structure.

[0006] The conductive stator structure includes a frame housing and a support frame that can be detachably installed outside the frame housing. The docking position of the optical stator structure and the optical rotor structure is located inside the support frame.

[0007] In one embodiment, the conductive rotor structure includes a conductive rotating part rotatably disposed at the end of the frame housing, a conductive hollow shaft connected to the conductive rotating part and disposed within the frame housing, and a conductive ring fitted around the outside of the conductive hollow shaft.

[0008] The encoder rotating part is installed in the support frame and is detachably connected to the conductive hollow shaft so that it can rotate with the conductive hollow shaft. The optical rotor structure passes through the interior of the conductive hollow shaft and extends into the support frame, and the optical rotor structure can rotate with the conductive hollow shaft.

[0009] In one embodiment, the optical stator structure includes a first transmission optical fiber and a first fixing structure, wherein the first transmission optical fiber is installed in the support frame body through the first fixing structure;

[0010] The optical rotor structure includes a second transmission optical fiber and a second fixing structure. The second transmission optical fiber is installed on the axial outside of the conductive hollow shaft through the second fixing structure, and the end of the second transmission optical fiber is positioned opposite to the end of the first transmission optical fiber.

[0011] In one embodiment, the encoder rotating part is an encoder hollow shaft, which is sleeved on the outside of the optical stator structure and detachably connected to the second fixed structure so as to be able to rotate with the conductive hollow shaft;

[0012] The encoder module also includes an encoder bracket, which is disposed in the support frame and is used to support the encoder body so that the encoder body is fitted onto the outside of the encoder rotating part;

[0013] The first transmission optical fiber is disposed within the rotating part of the encoder via the first fixing structure.

[0014] In one embodiment, the encoder module further includes a clamping assembly, which is fitted onto the outside of the encoder rotating part and is used to clamp and fix the encoder rotating part to the outside of the second fixing structure.

[0015] In one embodiment, the support frame includes a support body and a support cover detachably mounted on the support body.

[0016] In one embodiment, the smooth ring module further includes a first photoelectric conversion module and a second photoelectric conversion module. The first photoelectric conversion module is disposed in the support frame and connected to the first transmission optical fiber, and the second photoelectric conversion module is disposed in the conductive rotor structure and connected to the second transmission optical fiber.

[0017] In one embodiment, the wind power pitch photovoltaic slip ring further includes a stator-side interface assembly and a rotor-side interface assembly;

[0018] The stator-side interface assembly is mounted on the conductive stator structure. The stator-side interface assembly includes a plurality of stator interfaces, and the plurality of stator interfaces include at least one or more of an encoder interface, an optical fiber adapter interface, a conductive interface, and a signal interface. The encoder interface and the optical fiber adapter interface are mounted on the support frame, and the conductive interface and the signal interface are mounted on the frame housing.

[0019] The rotor-side interface assembly is mounted on the conductive rotor structure. The rotor-side interface assembly includes a plurality of rotor interfaces, and the plurality of rotor interfaces include at least one or more of an optical fiber adapter interface, a conductive interface, and a signal interface.

[0020] In one embodiment, the wind turbine pitch photovoltaic slip ring further includes a lightning protection module, which is disposed in the frame housing or the support frame.

[0021] Secondly, this utility model also provides a wind power generation device, which includes a nacelle, a nacelle cabinet disposed in the nacelle, a hub rotatably disposed on the nacelle, a pitch control cabinet disposed in the hub, and a photoelectric slip ring disposed between the nacelle cabinet and the pitch control cabinet.

[0022] The photoelectric slip ring is the wind power pitch photoelectric slip ring of any of the above embodiments.

[0023] The present invention has the following beneficial effects:

[0024] The wind turbine pitch control photoelectric slip ring and wind power generation equipment of this invention utilize a slip ring module comprising an optical stator structure mounted on a conductive stator structure and an optical rotor structure mounted on a conductive rotor structure and rotating with it. The slip ring module is specifically designed for communication signal transmission, employing the principle of total internal reflection in optical fiber to transmit optical signals. Since there is no electrical contact, there is no electrical spark discharge or electromagnetic interference. The optical signal is minimally affected by the external electromagnetic environment during transmission in the optical fiber, maintaining high signal fidelity. Furthermore, the slip ring module employs a non-contact transmission method, with no physical contact between the optical stator structure and the optical rotor structure, thus eliminating mechanical friction and wear problems. Therefore, it solves the problems of existing contact slip rings, such as easy wear, significant signal interference, and frequent maintenance.

[0025] In addition, by setting up the encoder module, the rotation information of the conductive rotor structure can be accurately fed back, providing key data support for the precise control of the pitch system.

[0026] Since the conductive stator structure includes a frame housing and a support frame that can be detachably installed outside the frame housing, the docking position of the optical stator structure and the optical rotor structure is located inside the support frame. This layout effectively protects the key components of optical communication transmission, avoids interference and damage to optical communication transmission caused by external environmental factors such as dust and moisture, extends the service life of the wind turbine pitch photovoltaic slip ring, and reduces maintenance costs. On the other hand, the support frame can be detachably installed outside the frame housing, which facilitates installation, disassembly, and maintenance operations when needed. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] in:

[0029] Figure 1 This is a schematic diagram of a wind turbine pitch control photovoltaic smart slip ring in one embodiment.

[0030] Figure 2 for Figure 1 The image shows the front view of the wind turbine pitch control photovoltaic smart slip ring.

[0031] Figure 3 for Figure 2 Sectional view of AA.

[0032] Figure 4 This is a schematic diagram of a portion of the structure in a wind power pitch photovoltaic smart slip ring in one embodiment.

[0033] Figure 5 for Figure 4 The image shows a top view of part of the structure of the wind turbine pitch control and photovoltaic intelligent slip ring.

[0034] Figure 6 for Figure 5 BB section view.

[0035] Figure 7 for Figure 6 Enlarged schematic diagram of section C.

[0036] Reference numerals: 100, Conductive slip ring module; 110, Conductive stator structure; 111, Frame housing; 112, Support frame; 1121, Support body; 1122, Support cover; 120, Conductive rotor structure; 121, Conductive rotating part; 122, Conductive hollow shaft; 123, Conductive ring; 200, Smooth ring module; 210, Optical stator structure; 211, First transmission optical fiber; 212, First fixing structure; 220, Optical rotor structure; 221, Second transmission optical fiber; 222, Second fixing structure; 300, Encoder module; 310, Encoder body; 320, Encoder rotating part; 330, Encoder bracket; 340, Clamping assembly; 400, Stator side interface assembly; 410, Stator interface; 411, Encoder interface; 412, Fiber optic adapter interface; 500, Rotor side interface assembly; 510, Rotor interface. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] This utility model discloses a wind turbine pitch optoelectronic slip ring, which is mainly used to solve the electrical connection problem between rotating and stationary components. It can continuously and stably transmit power and various signals, such as electrical signals and optical signals, during the rotation of the components, thereby ensuring the normal operation of the rotating equipment.

[0041] In one embodiment, please refer to Figures 1 to 7 The wind turbine pitch optoelectronic slip ring includes a conductive slip ring module 100, a smoothing ring module 200, and an encoder module 300. The conductive slip ring module 100 includes a conductive stator structure 110 and a conductive rotor structure 120 rotatably connected to the conductive stator structure 110. The smoothing ring module 200 includes an optical stator structure 210 disposed on the conductive stator structure 110 and an optical rotor structure 220 disposed on the conductive rotor structure 120 and rotating with the conductive rotor structure 120. The encoder module 300 includes an encoder body 310 disposed on the conductive stator structure 110 and an encoder rotating part 320 disposed on the conductive rotor structure 120 and rotating with the conductive rotor structure 120. The conductive stator structure 110 includes a frame housing 111 and a support frame 112 detachably installed outside the frame housing 111. The docking position of the optical stator structure 210 and the optical rotor structure 220 is disposed inside the support frame 112.

[0042] It is understandable that, since the smooth ring module 200 includes an optical stator structure 210 disposed on the conductive stator structure 110 and an optical rotor structure 220 disposed on the conductive rotor structure 120 and rotating with the conductive rotor structure 120, the smooth ring module 200 is specifically designed for communication signal transmission. It uses the principle of total internal reflection of light in optical fiber to transmit optical signals. There is no electrical contact, so there will be no electric spark discharge or electromagnetic interference. When the optical signal is transmitted in the optical fiber, it is minimally affected by the external electromagnetic environment and can maintain a high signal fidelity. At the same time, the smooth ring module 200 adopts a non-contact transmission method. There is no physical contact between the optical stator structure 210 and the optical rotor structure 220, so there is no problem of mechanical friction and wear. Therefore, it solves the problems of easy wear, large signal interference, and frequent maintenance of existing contact slip rings.

[0043] In this embodiment, the encoder module 300 can accurately feed back the rotation information of the conductive rotor structure 120, providing key data support for the precise control of the pitch system.

[0044] Since the conductive stator structure 110 includes a frame housing 111 and a support frame 112 that can be detachably installed outside the frame housing 111, the docking position of the optical stator structure 210 and the optical rotor structure 220 is located inside the support frame 112. This layout effectively protects the key components of optical communication transmission, avoids interference and damage to optical communication transmission caused by external environmental factors such as dust and moisture, extends the service life of the wind turbine pitch photovoltaic slip ring, and reduces maintenance costs. On the other hand, the support frame 112 can be detachably installed outside the frame housing 111, which facilitates installation, disassembly, and maintenance operations when needed.

[0045] In one embodiment, please refer to Figures 1 to 7 The conductive rotor structure 120 includes a conductive rotating part 121 rotatably disposed at the end of the frame housing 111, a conductive hollow shaft 122 connected to the conductive rotating part 121 and disposed within the frame housing 111, and a conductive ring 123 fitted outside the conductive hollow shaft 122. In this embodiment, the encoder rotating part 320 is installed inside the support frame 112 and is detachably connected to the conductive hollow shaft 122 so that it can rotate with the conductive hollow shaft 122. The optical rotor structure 220 passes through the interior of the conductive hollow shaft 122 and extends into the support frame 112, and the optical rotor structure 220 can rotate with the conductive hollow shaft 122.

[0046] With this configuration, since the encoder rotating part 320 is installed inside the support frame 112 and detachably connected to the conductive hollow shaft 122, it can rotate with the conductive hollow shaft 122. Therefore, the rotation information of the conductive hollow shaft 122 can be fed back in real time and accurately. By inserting the optical rotor structure 220 inside the conductive hollow shaft 122 and extending it into the support frame 112, and rotating synchronously with the conductive hollow shaft 122, stable transmission of optical communication signals in the rotating component is achieved. At the same time, the conductive hollow shaft 122 can transmit electrical signals. This design allows the structure to simultaneously meet the transmission requirements of optical and electrical signals.

[0047] In one embodiment, please refer to Figure 6 and Figure 7 The optical stator structure 210 includes a first transmission optical fiber 211 and a first fixing structure 212. The first transmission optical fiber 211 is installed in the support frame 112 through the first fixing structure 212. The optical rotor structure 220 includes a second transmission optical fiber 221 and a second fixing structure 222. The second transmission optical fiber 221 is installed on the axial outside of the conductive hollow shaft 122 through the second fixing structure 222, and the end of the second transmission optical fiber 221 is arranged opposite to the end of the first transmission optical fiber 211.

[0048] With this configuration, the first transmission optical fiber 211 is securely installed within the support frame 112 using the first fixing structure 212. During equipment operation, the support frame 112 provides a stable support environment for the first transmission optical fiber 211, effectively resisting external vibrations, impacts, and other interference factors, ensuring its position remains fixed. This lays a reliable foundation for the stable reception and transmission of optical communication signals, greatly reducing the risk of signal transmission interruption or distortion caused by optical fiber swaying.

[0049] The second transmission optical fiber 221 is installed on the axial outside of the conductive hollow shaft 122 through the second fixing structure 222, and its end is set opposite to the first transmission optical fiber 211. When the conductive hollow shaft 122 rotates, the second transmission optical fiber 221 can rotate synchronously with it, while always maintaining a good relative position with the first transmission optical fiber 211. This design realizes seamless and stable transmission of optical communication signals between rotating and stationary parts.

[0050] In one embodiment, please refer to Figure 6 and Figure 7 The encoder rotating part 320 is a hollow encoder shaft. The encoder rotating part 320 is sleeved on the outside of the optical stator structure 210 and is detachably connected to the second fixed structure 222 so that it can rotate with the conductive hollow shaft 122. This allows it to accurately follow the rotation of the conductive hollow shaft 122 and obtain the rotation information of the conductive hollow shaft 122 in real time, providing high-precision feedback data for equipment operation control.

[0051] In this embodiment, the encoder module 300 also includes an encoder bracket 330, which is disposed inside the support frame 112 and is used to support the encoder body 310 so that the encoder body 310 is fitted onto the outside of the encoder rotating part 320. This not only enhances the overall installation stability of the encoder and reduces measurement errors caused by vibration, but also facilitates the disassembly and maintenance of the encoder module 300.

[0052] Specifically, the first transmission optical fiber 211 is installed in the encoder rotating part 320 through the first fixing structure 212, which facilitates the spatial arrangement of various components in the support frame 112.

[0053] In one embodiment, please refer to Figure 6 and Figure 7 The encoder module 300 also includes a clamping assembly 340, which is fitted onto the outside of the encoder rotating part 320 and is used to clamp and fix the encoder rotating part 320 to the outside of the second fixing structure 222.

[0054] This configuration significantly enhances the connection strength between the encoder rotating part 320 and the second fixed structure 222, effectively preventing relative sliding or loosening between the encoder rotating part 320 and the second fixed structure 222 due to vibration, rotational impact, or other factors during equipment operation. This ensures that the encoder module 300 can accurately and stably acquire the rotational information of the second fixed structure 222 and the conductive hollow shaft 122, providing reliable data support for the precise control of the equipment.

[0055] On the other hand, the design of the clamping assembly 340 makes the installation and disassembly of the encoder rotating part 320 and the second fixed structure 222 more convenient. When equipment maintenance, component replacement and other operations are required, the relevant components can be quickly disassembled and assembled by simply operating the clamping assembly 340, which greatly shortens the maintenance time, reduces the maintenance cost and improves the overall efficiency of the equipment.

[0056] In one embodiment, please refer to Figure 6 and Figure 7 The support frame 112 includes a support body 1121 and a support cover 1122 that can be detachably installed on the support body 1121. The support body 1121 and the support cover 1122 are designed to be detachable, which facilitates the individual disassembly and maintenance of the components inside the support body 1121 and the support cover 1122.

[0057] In one embodiment, the smooth ring module 200 further includes a first photoelectric conversion module and a second photoelectric conversion module. The first photoelectric conversion module is disposed in the support frame 112 and connected to the first transmission optical fiber 211. The second photoelectric conversion module is disposed in the conductive rotor structure 120 and connected to the second transmission optical fiber 221.

[0058] It is understandable that optical fibers are relatively fragile during actual installation and use. During the process of connecting the optical fiber from the wind turbine pitch photovoltaic slip ring to the nacelle cabinet and the pitch cabinet, it may be damaged due to excessive bending, external pressure or collision, which may lead to communication interruption.

[0059] The first photoelectric conversion module is located inside the frame housing 111 and connected to the first transmission optical fiber 211. The second photoelectric conversion module is located in the conductive rotor structure 120 and connected to the second transmission optical fiber 221. The two can convert optical signals into electrical signals. The electrical signals can be carried by wires. Wires have good physical properties, which can enhance the stability and reliability of the operation.

[0060] Of course, in other embodiments, the first photoelectric conversion module and the second photoelectric conversion module may be installed in the engine room cabinet and the pitch control cabinet, respectively.

[0061] In one embodiment, please refer to Figures 1 to 6The wind turbine pitch photovoltaic slip ring also includes a stator-side interface assembly 400 and a rotor-side interface assembly 500. The stator-side interface assembly 400 is mounted on the conductive stator structure 110 and includes a plurality of stator interfaces 410. Each stator interface 410 includes at least one or more of an encoder interface 411, an optical fiber adapter interface 412, a conductive interface, and a signal interface. The encoder interface 411 and the optical fiber adapter interface 412 are mounted on the support frame 112, and the conductive interface and the signal interface are mounted on the frame housing 111. The rotor-side interface assembly 500 is mounted on the conductive rotor structure 120 and includes a plurality of rotor interfaces 510. Each rotor interface 510 includes at least one or more of an optical fiber adapter interface 412, a conductive interface, and a signal interface.

[0062] Understandably, the encoder interface 411 within the stator-side interface assembly 400 can precisely connect to the encoder module 300, and the fiber optic adapter interface 412 within the stator-side interface assembly 400 ensures stable access and transmission of optical signals on the stator side, improving communication reliability and anti-interference capability; the conductive interface and signal interface within the stator-side interface assembly 400 respectively realize power transmission and electrical signal interaction, meeting the basic requirements for equipment operation.

[0063] The fiber optic adapter interface 412, conductive interface, and signal interface within the rotor-side interface assembly 500 work in conjunction with their corresponding stator-side interfaces to ensure stable and continuous transmission of optical and electrical signals and power during rotor rotation, enabling the pitch system to operate reliably in dynamic environments. This modular interface design facilitates installation, maintenance, and upgrades, improves the overall performance and stability of the wind power pitch system, and reduces operation and maintenance costs.

[0064] In addition, since the encoder interface 411 and the fiber optic adapter interface 412 are mounted on the support frame 112, it is more convenient to connect, disassemble and repair the encoder interface 411 and the fiber optic adapter interface 412.

[0065] In one embodiment, the wind turbine pitch photoelectric slip ring also includes a lightning protection module, which is housed within the frame housing 111 or the support frame 112. It is understood that wind farms are mostly located in open areas, where the wind turbine pitch photoelectric slip ring is susceptible to lightning strikes. This protection module reduces equipment failures and downtime caused by lightning strikes, ensuring the stable operation of the wind turbine pitch system.

[0066] Please see Figures 1 to 7 The present invention also discloses a wind power generation device, which includes a nacelle, a nacelle cabinet disposed in the nacelle, a hub rotatably disposed on the nacelle, a pitch control cabinet disposed in the hub, and a photoelectric slip ring disposed between the nacelle cabinet and the pitch control cabinet; wherein, the photoelectric slip ring is the wind power pitch photoelectric slip ring of any of the above embodiments.

[0067] It is understandable that applying the wind turbine pitch control photoelectric slip ring to wind power generation equipment is beneficial because the smooth ring module 200 includes an optical stator structure 210 mounted on the conductive stator structure 110 and an optical rotor structure 220 mounted on the conductive rotor structure 120 and rotating with the conductive rotor structure 120. By setting the smooth ring module 200 specifically for communication signal transmission, it uses the principle of total internal reflection of light in optical fiber to transmit optical signals. There is no electrical contact, so there will be no electric spark discharge or electromagnetic interference. When the optical signal is transmitted in the optical fiber, it is minimally affected by the external electromagnetic environment and can maintain a high signal fidelity. At the same time, the smooth ring module 200 adopts a non-contact transmission method. There is no physical contact between the optical stator structure 210 and the optical rotor structure 220, so there is no problem of mechanical friction and wear. Therefore, it solves the problems of easy wear, large signal interference, and frequent maintenance of existing contact slip rings, thereby improving the working stability and reliability of wind power generation equipment.

[0068] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A wind turbine pitch control photoelectric slip ring, characterized in that, The wind turbine pitch optoelectronic slip ring includes a conductive slip ring module, a smoothing ring module, and an encoder module. The conductive slip ring module includes a conductive stator structure and a conductive rotor structure rotatably connected to the conductive stator structure. The smoothing ring module includes an optical stator structure disposed on the conductive stator structure and an optical rotor structure disposed on the conductive rotor structure and rotating with the conductive rotor structure. The encoder module includes an encoder body disposed on the conductive stator structure and an encoder rotating part disposed on the conductive rotor structure and rotating with the conductive rotor structure. The conductive stator structure includes a frame housing and a support frame that can be detachably installed outside the frame housing. The docking position of the optical stator structure and the optical rotor structure is located inside the support frame.

2. The wind power pitch photovoltaic slip ring according to claim 1, characterized in that, The conductive rotor structure includes a conductive rotating part rotatably disposed at the end of the frame box, a conductive hollow shaft connected to the conductive rotating part and disposed in the frame box, and a conductive ring fitted outside the conductive hollow shaft. The encoder rotating part is installed in the support frame and is detachably connected to the conductive hollow shaft so that it can rotate with the conductive hollow shaft. The optical rotor structure passes through the interior of the conductive hollow shaft and extends into the support frame, and the optical rotor structure can rotate with the conductive hollow shaft.

3. The wind power pitch photovoltaic slip ring according to claim 2, characterized in that, The optical stator structure includes a first transmission optical fiber and a first fixing structure, wherein the first transmission optical fiber is installed in the support frame body through the first fixing structure; The optical rotor structure includes a second transmission optical fiber and a second fixing structure. The second transmission optical fiber is installed on the axial outside of the conductive hollow shaft through the second fixing structure, and the end of the second transmission optical fiber is positioned opposite to the end of the first transmission optical fiber.

4. The wind turbine pitch control photoelectric slip ring according to claim 3, characterized in that, The encoder rotating part is an encoder hollow shaft. The encoder rotating part is sleeved on the outside of the optical stator structure and is detachably connected to the second fixed structure so that it can rotate with the conductive hollow shaft. The encoder module also includes an encoder bracket, which is disposed in the support frame and is used to support the encoder body so that the encoder body is fitted onto the outside of the encoder rotating part; The first transmission optical fiber is disposed within the rotating part of the encoder via the first fixing structure.

5. The wind turbine pitch photovoltaic slip ring according to claim 4, characterized in that, The encoder module further includes a clamping assembly, which is fitted onto the outside of the encoder rotating part and is used to clamp and fix the encoder rotating part to the outside of the second fixing structure.

6. The wind power pitch photovoltaic slip ring according to claim 4, characterized in that, The support frame includes a support body and a support cover that can be detachably installed on the support body.

7. The wind turbine pitch photovoltaic slip ring according to any one of claims 3 to 6, characterized in that, The smooth ring module further includes a first photoelectric conversion module and a second photoelectric conversion module. The first photoelectric conversion module is disposed in the support frame and connected to the first transmission optical fiber. The second photoelectric conversion module is disposed in the conductive rotor structure and connected to the second transmission optical fiber.

8. The wind power pitch photovoltaic slip ring according to any one of claims 1 to 6, characterized in that, The wind power pitch photovoltaic slip ring also includes a stator-side interface assembly and a rotor-side interface assembly; The stator-side interface assembly is mounted on the conductive stator structure. The stator-side interface assembly includes a plurality of stator interfaces, and the plurality of stator interfaces include at least one or more of an encoder interface, an optical fiber adapter interface, a conductive interface, and a signal interface. The encoder interface and the optical fiber adapter interface are mounted on the support frame, and the conductive interface and the signal interface are mounted on the frame housing. The rotor-side interface assembly is mounted on the conductive rotor structure. The rotor-side interface assembly includes a plurality of rotor interfaces, and the plurality of rotor interfaces include at least one or more of an optical fiber adapter interface, a conductive interface, and a signal interface.

9. The wind turbine pitch control photoelectric slip ring according to any one of claims 1 to 6, characterized in that, The wind turbine pitch photovoltaic slip ring also includes a lightning protection module, which is installed in the frame box or the support frame.

10. A wind power generation device, characterized in that, The wind power generation equipment includes a nacelle, a nacelle cabinet disposed in the nacelle, a hub rotatably disposed on the nacelle, a pitch control cabinet disposed in the hub, and a photoelectric slip ring disposed between the nacelle cabinet and the pitch control cabinet; The photoelectric slip ring is the wind power pitch photoelectric slip ring according to any one of claims 1 to 9.

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