Novel wind power variable pitch photoelectric hybrid slip ring

Abstract

The utility model discloses a novel wind power variable pitch photoelectric hybrid slip ring, which relates to the technical field of wind power variable pitch slip rings and comprises a conductive slip ring and an optical fiber slip ring, the conductive slip ring comprises a conductive slip ring rotor portion and a conductive slip ring stator portion, and the optical fiber slip ring comprises an optical fiber slip ring rotor portion and an optical fiber slip ring stator portion. According to the utility model, the conductive slip ring is combined with the optical fiber slip ring, strong current signals with large power are transmitted by the conductive slip ring, and control signals and data which are weak in signals and are susceptible to electromagnetic interference are transmitted by the optical fiber slip ring, so that the service life of the photoelectric combined slip ring is effectively prolonged, and the purposes of small size, low cost and high reliability are realized. Meanwhile, the function of transmitting multiple paths of signals can be achieved, position and speed information provided by the slip ring encoder is combined with control system instruction signals transmitted by the optical fiber slip ring, and accurate adjustment and control over the paddles are achieved; meanwhile, the electric power signal transmitted by the conductive slip ring provides necessary power support for the whole variable pitch system.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power variable pitch slip ring technical field, concretely is a kind of novel wind power variable pitch photoelectric hybrid slip ring. BACKGROUND

[0002] At present, wind power generation has become one of the important renewable energy sources in the world, and wind power generation is a technology for generating power by using wind energy. Among them, the wind power variable pitch slip ring plays a crucial role in the wind turbine, and the wind power variable pitch slip ring is a key component connecting the wind turbine blade and the control system. It is responsible for transmitting real-time monitoring data such as pitch angle, speed and temperature of the blade, as well as control instructions from the control system. In addition to signal transmission, the wind power variable pitch slip ring is also responsible for providing electrical connection between rotating parts and fixed parts to transmit necessary power. This ensures that sensors, actuators and other devices on the blade can work normally and receive power supply from the control system. SUMMARY

[0003] The utility model aims at providing a novel wind power variable pitch photoelectric hybrid slip ring to solve the problems raised in the above background technology.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a novel wind power variable -pitch photoelectric hybrid slip ring, including conductive slip ring and optical fiber slip ring, the conductive slip ring includes: conductive slip ring rotor part and conductive slip ring stator part, the optical fiber slip ring includes: optical fiber slip ring rotor part and optical fiber slip ring stator part, the conductive slip ring rotor part includes the hollow cavity in the inside, the right side of conductive slip ring rotor casing that is equipped with the opening, the left side of conductive slip ring rotor casing is equipped with the hollow pipe body of conductive slip ring rotating shaft, the right end of conductive slip ring rotating shaft passes through the side wall of conductive slip ring rotor casing and stretches into the inside of conductive slip ring rotor casing, the inside of conductive slip ring rotor casing is equipped with integrated joint and is connected on conductive slip ring rotating shaft, the outside of conductive slip ring rotating shaft is equipped with first insulator, the optical fiber slip ring rotor part includes the rotor optical fiber of setting in the inside of conductive slip ring rotating shaft, the right end of rotor optical fiber is connected with integrated joint, and the left end is equipped with optical fiber rotor ring, and the optical fiber rotor ring is fixedly connected with conductive slip ring rotating shaft and coaxially rotates, the conductive slip ring stator part includes conductive slip ring stator casing, the right side of conductive slip ring stator casing is equipped with two first rotating shaft and is rotatably connected with conductive slip ring rotating shaft, the inside of conductive slip ring stator casing is equipped with the first cavity and the second cavity of intercommunication, the inside of first cavity is equipped with two conductive rods, the second insulator and brush block are equipped on the conductive rod, one end of brush block is fixed on the conductive rod, and the other end is connected with conductive slip ring rotating shaft, the first cavity and the second cavity intercommunication of the inside of conductive slip ring stator casing are equipped with second rotating shaft and rotatably connected with conductive slip ring rotating shaft, the inside of second cavity is equipped with the connecting plate fixed on the inner wall of conductive slip ring stator casing, the connecting plate is rotatably connected with conductive slip ring rotating shaft and is fixed with slip ring encoder, the optical fiber slip ring stator part includes the stator optical fiber protection sleeve fixed on the left side of connecting plate, the inside of stator optical fiber protection sleeve is equipped with stator optical fiber, the right end of stator optical fiber is equipped with optical fiber stator ring and is fixedly connected with stator optical fiber protection sleeve, and the left end is connected with integrated cable.

[0005] Further, the outside of the conductive slip ring rotating shaft is fixed with a plurality of first insulators, and the first insulators are evenly distributed on the conductive slip ring rotating shaft at equal intervals.

[0006] Further, a plurality of second insulators are fixed on the conductive rods at equal intervals, the number of the second insulators is the same as that of the first insulators, and a brush block is arranged in the gap between every two second insulators.

[0007] Further, the brush block is made of elastic metal material.

[0008] Further, the slip ring encoder includes an encoder stator part and an encoder rotor part, the encoder stator part is connected with the connecting plate, the encoder rotor part is connected with the conductive slip ring rotating shaft, and the slip ring encoder is electrically connected with the integrated cable.

[0009] Preferably, the rotor optical fiber and the stator optical fiber are provided with optical fiber collimators.

[0010] Compared with the prior art, the utility model has the advantages that: the utility model discloses a combination of electric conduction slip ring and optical fiber slip ring, the strong current signal with large power is transmitted by the electric conduction slip ring, the control signal and data weak in signal and susceptible to electromagnetic interference are transmitted by the optical fiber slip ring, effectively prolonging the service life of the photoelectric combination slip ring, realizing small size, low cost and the function of transmitting multiple signals, wherein the position and speed information provided by the slip ring encoder is combined with the control system instruction signal transmitted by the optical fiber slip ring, realizing accurate adjustment and control of the paddle, and the power signal transmitted by the electric conduction slip ring provides necessary power support for the entire variable pitch system, and the stator optical fiber and the optical fiber collimator provided on the stator optical fiber are provided, the two optical fiber collimators realize the rotary transmission of optical signals through coupling, so that the integrity of optical signal transmission is maintained during the high-speed rotation of the optical fiber slip ring, and finally the brush block is made of elastic metal material, when the brush block and the electric conduction slip ring shaft work for a long time and are abraded, based on the elastic metal characteristics, a new part continues to contact the electric conduction slip ring shaft, and the brush block and the electric conduction slip ring shaft are always in contact, thereby prolonging the service life and transmission stability of the electric conduction slip ring. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic view of the utility model;

[0012] Figure 2 It is a structural schematic view of the electric conduction slip ring stator part of the utility model;

[0013] Figure 3 It is a structural schematic view of the electric conduction slip ring rotor part and the optical fiber slip ring rotor part of the utility model;

[0014] Figure 4 It is a structural schematic view of the optical fiber slip ring stator part of the utility model;

[0015] In the drawing: 1, electric conduction slip ring rotor part, 2, electric conduction slip ring stator part, 3, optical fiber slip ring rotor part, 4, optical fiber slip ring stator part, 5, electric conduction slip ring rotor shell, 6, electric conduction slip ring shaft, 7, integrated joint, 8, first insulator, 9, rotor optical fiber, 10, optical fiber rotor ring, 11, electric conduction slip ring stator shell, 12, first rotating shaft, 13, electric conduction rod, 14, second insulator, 15, brush block, 16, second rotating shaft, 17, connecting plate, 18, slip ring encoder, 19, optical fiber protective sleeve, 20, stator optical fiber, 21, optical fiber stator ring, 22, integrated cable. DETAILED DESCRIPTION

[0016] In order to make the technical scheme of the utility model better understood by the skilled in the art, the technical scheme in the utility model embodiment is clearly and completely described below in combination with the drawings and specific embodiments.

[0017] Please refer to Figures 1-4 The utility model provides a novel wind power variable pitch photoelectric hybrid slip ring, including conductive slip ring and optical fiber slip ring, the conductive slip ring includes: conductive slip ring rotor part 1 and conductive slip ring stator part 2, the optical fiber slip ring includes: optical fiber slip ring rotor part 3 and optical fiber slip ring stator part 4, the conductive slip ring rotor part 1 includes the hollow cavity in the inside, right side is equipped with the open conductive slip ring rotor shell 5, the left side of conductive slip ring rotor shell 5 is equipped with the hollow pipe body of conductive slip ring rotating shaft 6, the right end of conductive slip ring rotating shaft 6 penetrates the side wall of conductive slip ring rotor shell 5 and stretches into the inside of conductive slip ring rotor shell 5, the inside of conductive slip ring rotor shell 5 is equipped with integrated joint 7 and is connected on conductive slip ring rotating shaft 6, the outside of conductive slip ring rotating shaft 6 is equipped with first insulator 8, the optical fiber slip ring rotor part 3 includes the rotor optical fiber 9 of being arranged in the inside of conductive slip ring rotating shaft 6, the right end of rotor optical fiber 9 is connected with integrated joint 7, and the left end is equipped with optical fiber rotor ring 10, and optical fiber rotor ring 10 is fixedly connected with conductive slip ring rotating shaft 6 and coaxially rotates, the conductive slip ring stator part 2 includes conductive slip ring stator shell 11, the right side of conductive slip ring stator shell 11 is equipped with two first rotating shafts 12 and is rotatably connected with conductive slip ring rotating shaft 6, the inside of conductive slip ring stator shell 11 is equipped with the first cavity and the second cavity of intercommunication, the inside of first cavity is equipped with two conductive rods 13, second insulator 14 and brush block 15 are equipped on conductive rod 13, one end of brush block 15 is fixed on conductive rod 13, and the other end is connected with conductive slip ring rotating shaft 6, the first cavity and the second cavity intercommunication of the inside of conductive slip ring stator shell 11 are equipped with second rotating shaft 16 and rotatably connected with conductive slip ring rotating shaft 6, the inside of second cavity is equipped with the connecting plate 17 fixed on the inner wall of conductive slip ring stator shell 11, the connecting plate 17 is fixed with slip ring encoder 18 and rotatably connected with conductive slip ring rotating shaft 6, the optical fiber slip ring stator part 4 includes the stator optical fiber protection sleeve 19 fixed on the left side of connecting plate 17, the inside of stator optical fiber protection sleeve 19 is equipped with stator optical fiber 20, the right end of stator optical fiber 20 is equipped with optical fiber stator ring 21 and is fixedly connected with stator optical fiber protection sleeve 19, and the left end is connected with integrated cable 22.

[0018] The combination of the conductive slip ring and the optical fiber slip ring changes the electrical signal transmission to optical signal transmission, which is a non-contact transmission. Specifically, the conductive slip ring transmits the electrical energy generated by the rotating part of the wind turbine to the static part to provide necessary power support for the entire wind turbine variable pitch system. Based on the characteristics of the optical fiber, the optical fiber transmission has low signal attenuation and high anti-interference ability, and can maintain high-quality signal transmission during high-speed rotation. Therefore, the optical fiber slip ring is responsible for transmitting high-speed digital signals and image data. Therefore, the strong current signal with large power is transmitted by the conductive slip ring, and the control signal and data which are weak and susceptible to electromagnetic interference are transmitted by the optical fiber slip ring. The service life of the photoelectric combined slip ring is effectively prolonged, the size is small, the cost is low, and the function of transmitting multiple signals can be realized.

[0019] A plurality of first insulators 8 are fixed outside the conductive slip ring rotating shaft 6, and the first insulators 8 are uniformly distributed at equal intervals on the conductive slip ring rotating shaft 6.

[0020] A plurality of second insulators 14 are fixed at equal intervals on the conductive rod 13, and the number of the second insulators 14 is the same as that of the first insulators 8, and an electric brush block 15 is arranged in the gap between every two second insulators 14.

[0021] The first insulators 8 and the second insulators 14 ensure that the conductive slip ring rotating shaft 6 and the conductive rod 13 are not electrically connected with the surrounding electrical elements or components, prevent current leakage or short circuit, thereby ensuring the electrical safety of the entire system, and prevent unnecessary electrical contact between the electric brush block 15 and the conductive slip ring rotating shaft 6 and the conductive rod 13, thereby protecting them from damage, maintaining the performance of the equipment and prolonging the service life thereof.

[0022] The electric brush block 15 is made of elastic metal.

[0023] When the electric brush block 15 and the conductive slip ring rotating shaft 6 work for a long time and are worn, based on the elastic metal characteristics, the new part continues to contact the conductive slip ring rotating shaft 6, and the electric brush block 15 always contacts the conductive slip ring rotating shaft 6, thereby prolonging the service life of the conductive slip ring and the stability of the transmission.

[0024] The slip ring encoder 18 includes an encoder stator part and an encoder rotor part. The encoder stator part is connected with the connecting plate 17, and the encoder rotor part is connected with the conductive slip ring rotating shaft 6. The slip ring encoder 18 is electrically connected with the integrated cable 22.

[0025] The slip ring encoder 18 monitors and feeds back the rotating speed and angle information of the blade in real time, and provides accurate position and speed data for the variable pitch system.

[0026] The stator optical fiber 19 and the stator optical fiber 19 are provided with an optical fiber collimator.

[0027] Two optical fiber collimators realize the rotation transmission of optical signals through coupling, so that the integrity of optical signal transmission is maintained during high-speed rotation of the optical fiber slip ring.

[0028] In use of the utility model, the integrated joint 7 is connected with the rotating part of the wind turbine, the integrated cable 22 is connected with the fixed part of the wind turbine, the conductive slip ring transmits the electric energy generated by the rotating part of the wind turbine to the static part to provide necessary power support for the whole wind power variable pitch system, the optical fiber slip ring is responsible for transmitting high-speed digital signals and image data, the slip ring encoder 18 monitors and feeds back the rotating speed and angle information of the blade in real time to provide accurate position and speed data for the variable pitch system.

[0029] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, for those skilled in the art, it can be understood that all other embodiments obtained by various changes, modifications, replacements and modifications of these embodiments without departing from the principles and spirits of the utility model and without making creative labor belong to the protection scope of the utility model.

Claims

1. A new type of wind power variable pitch optical hybrid slip ring, comprising a conductive slip ring and an optical fiber slip ring, characterized in that, The conductive slip ring includes a conductive slip ring rotor part (1) and a conductive slip ring stator part (2), the optical fiber slip ring includes an optical fiber slip ring rotor part (3) and an optical fiber slip ring stator part (4), the conductive slip ring rotor part (1) includes a hollow cavity inside, a conductive slip ring rotor shell (5) with an opening on the right side, the left side of the conductive slip ring rotor shell (5) is provided with a hollow pipe body of the conductive slip ring rotating shaft (6), the right end of the conductive slip ring rotating shaft (6) penetrates the side wall of the conductive slip ring rotor shell (5) and extends into the inside of the conductive slip ring rotor shell (5), the inside of the conductive slip ring rotor shell (5) is provided with an integrated joint (7) connected to the conductive slip ring rotating shaft (6), the outside of the conductive slip ring rotating shaft (6) is provided with a first insulator (8), the optical fiber slip ring rotor part (3) includes a rotor optical fiber (9) arranged inside the conductive slip ring rotating shaft (6), the right end of the rotor optical fiber (9) is connected with the integrated joint (7), and the left end is provided with an optical fiber rotor ring (10); the optical fiber rotor ring (10) is fixedly connected with the conductive slip ring rotating shaft (6) and rotates coaxially, the conductive slip ring stator part (2) includes a conductive slip ring stator shell (11), the right side of the conductive slip ring stator shell (11) is provided with two first rotating shafts (12) rotatably connected with the conductive slip ring rotating shaft (6), the inside of the conductive slip ring stator shell (11) is provided with a first cavity and a second cavity in communication, the inside of the first cavity is provided with two conductive rods (13), the conductive rods (13) are provided with a second insulator (14) and a brush block (15), one end of the brush block (15) is fixed on the conductive rod (13), and the other end is connected with the conductive slip ring rotating shaft (6), the first cavity and the second cavity in the inside of the conductive slip ring stator shell (11) are provided with a second rotating shaft (16) rotatably connected with the conductive slip ring rotating shaft (6), the inside of the second cavity is provided with a connecting plate (17) fixed on the inner wall of the conductive slip ring stator shell (11), the connecting plate (17) is fixed with a slip ring encoder (18) rotatably connected with the conductive slip ring rotating shaft (6), the optical fiber slip ring stator part (4) includes a stator optical fiber protection sleeve (19) fixed on the left side of the connecting plate (17), the inside of the stator optical fiber protection sleeve (19) is provided with a stator optical fiber (20), the right end of the stator optical fiber (20) is provided with an optical fiber stator ring (21) fixedly connected with the stator optical fiber protection sleeve (19), and the left end is connected with an integrated cable (22).

2. The novel wind power variable-pitch photoelectric hybrid slip ring of claim 1, characterized in that, The outside of the conductive slip ring rotating shaft (6) is fixedly provided with a plurality of first insulators (8), and the first insulators (8) are uniformly distributed at equal intervals on the conductive slip ring rotating shaft (6).

3. The novel wind power variable-pitch photoelectric hybrid slip ring of claim 1, characterized in that, A plurality of second insulators (14) are uniformly fixed at equal intervals on the conductive rod (13), the number of the second insulators (14) is the same as that of the first insulators (8), and a brush block (15) is arranged in the gap between every two second insulators (14).

4. The novel wind power variable-pitch opto-hybrid slip ring of claim 3, characterized by, The brush block (15) is made of elastic metal material.

5. The novel wind power variable-pitch photoelectric hybrid slip ring of claim 1, wherein, The slip ring encoder (18) comprises an encoder stator part connected with the connecting plate (17) and an encoder rotor part connected with the conductive slip ring rotating shaft (6), and the slip ring encoder (18) is electrically connected with the integrated cable (22).

6. The novel wind power variable-pitch opto-hybrid slip ring of claim 1, wherein, The rotor optical fiber (9) and the stator optical fiber (20) are provided with optical fiber collimators.

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