Variable-pitch fan with wireless communication system
By introducing a wireless communication system into the pitch wind turbine, and using power supply lines and wireless transceiver modules to replace traditional communication lines, the problem of messy wiring harnesses on the slip ring is solved, enabling convenient spatial arrangement and wiring maintenance, and improving the installation flexibility of the controller.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-13
- Publication Date
- 2026-04-10
AI Technical Summary
The existing variable pitch wind turbines have dense and messy wire harnesses on the slip rings, which makes spatial arrangement and cable management and maintenance inconvenient.
A wireless communication system is adopted, replacing the traditional wired communication line with the first and second power supply lines. Combined with the first and second pitch wireless transceiver modules, signal transmission between the pitch controller and the data transmitter is realized, and the third power supply line enables the pitch controller to transmit energy and information to the pitch actuator.
The reduced wiring harness on the slip ring facilitates space arrangement and cable management maintenance, and improves the installation flexibility of the controller.
Smart Images
Figure CN224107371U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of wind power generation, specifically relates to a variable pitch fan with wireless communication system. BACKGROUND
[0002] The variable pitch fan is the core design in modern large wind turbine generator units, and its core feature lies in that the pitch angle of its blade can be dynamically adjusted according to factors such as wind speed and power grid demand during operation. This variable pitch capability is realized through a variable pitch actuator, so that the fan can capture maximum wind energy at low wind speed, and can change the lift-drag ratio of the fan blade at high wind speed or in failure, so as to accurately control the power output, protect the unit structure from overload damage, and improve the overall power generation efficiency and safety. The variable pitch system is the key technology for the fan to realize intelligent control, adapt to complex wind conditions and meet the requirements of power grid dispatching.
[0003] The existing variable pitch fan is usually provided with a current collection ring, and the current collection ring is connected with both a conductive wire for power supply and a communication wire for signal transmission, so that the wire harness on the current collection ring is dense and miscellaneous, and it is inconvenient to arrange space at the current collection ring and to maintain the wire arrangement of the current collection ring. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a variable pitch fan with wireless communication system, which is convenient for arranging space at the current collection ring and maintaining the wire arrangement of the current collection ring, can reduce the data line wiring, and makes the installation position of the controller more flexible.
[0005] To solve the above technical problems, the utility model adopts the following scheme:
[0006] A pitch wind turbine with a wireless communication system includes a generator and a main shaft connected to each other. The main shaft has a turbine hub, a pitch controller, and a slip ring for powering the pitch controller. At least one connecting rod is connected to the turbine hub, and a blade is located at the end of the connecting rod away from the turbine hub. A pitch actuator is located between the blade and the connecting rod. The turbine also includes a data transmitter. A first power supply line is electrically connected between the generator and the data transmitter, and a second power supply line is electrically connected between the data transmitter and the slip ring. The data transmitter contains a first pitch wireless transceiver module, and the pitch controller contains a second pitch wireless transceiver module for wireless communication with the first pitch wireless transceiver module. The pitch actuator can use existing technology for any pitch wind turbine and will not be described in detail. The slip ring is electrically connected to the pitch controller, and the connection method between the slip ring and the pitch controller uses existing technology and will not be described in detail. Its function is to realize the energy transmission of the generator through the setting of the first power supply line and the second power supply line, and to realize the signal transmission between the pitch controller and the data transmitter through the setting of the first pitch wireless transceiver module and the second pitch wireless transceiver module. Compared with the wired communication method used in the prior art, only the conductive line for power supply (the first power supply line and the second power supply line) is set, and wireless communication is used to replace the communication line. This reduces the wiring harness on the slip ring, making it easier to arrange the space where the slip ring is located and to facilitate wiring maintenance.
[0007] Furthermore, the pitch controller and the pitch actuator are electrically connected by a third power supply line. This third power supply line allows the pitch controller to transmit energy to the pitch actuator while simultaneously transmitting information to it.
[0008] Furthermore, the connecting rod is provided with a cable tray for placing the third power supply line.
[0009] Furthermore, the wind turbine hub is located on the top surface of the wind turbine main shaft, the pitch controller is located on the top surface of the wind turbine hub, the slip ring is sleeved on the wind turbine main shaft, and the pitch controller includes a protective cover covering the top surface of the wind turbine hub, with a connecting rod passing through the protective cover and connected to the top surface of the wind turbine hub. An anemometer and wind direction indicator are located on the top surface of the protective cover. Their function is to protect the pitch controller through the protective cover.
[0010] Furthermore, it also includes an anemometer, which comprises a wind speed sensor and a wind direction sensor. The anemometer itself uses existing technology and will not be elaborated upon. Its function is to collect wind speed and direction information through the settings of the wind speed and wind direction sensors and transmit it to the pitch controller, so that the pitch controller can control the pitch actuator to perform pitch operation based on the wind speed and wind direction information.
[0011] Further, the wind speed and direction instrument is arranged above the variable pitch controller, a fourth energy supply line is connected between the variable pitch controller and the wind speed sensor, and a fifth energy supply line is connected between the variable pitch controller and the wind direction sensor.
[0012] Further, the support table is further provided with a support column connected to the bottom surface of the support table, a connecting column is arranged on the top surface of the support table, a bearing plate is arranged on the top surface of the connecting column, a bearing seat is arranged on the bearing plate, the generator and the data transmitter are connected to the support table, and the variable pitch controller is arranged directly above the bearing seat.
[0013] Further, a shaft coupling is arranged between the variable pitch controller and the bearing seat and between the fan main shaft and the generator.
[0014] Further, the generator is connected to the bottom surface of the support table, the data transmitter is connected to the top surface of the support table, the current collector ring is arranged above the data transmitter, one end of the first energy supply line connected to the generator is arranged below the generator, and one end of the first energy supply line connected to the data transmitter is arranged below one end of the second energy supply line connected to the data transmitter.
[0015] Further, an encoder is arranged between the generator and the first energy supply line.
[0016] The utility model discloses have the beneficial effect:
[0017] 1. The first energy supply line and the second energy supply line are arranged to realize the energy transmission of the generator, the first variable pitch wireless transceiver module and the second variable pitch wireless transceiver module are arranged to realize the signal transmission between the variable pitch controller and the data transmitter, and compared with the wired communication mode in the prior art, the conductive line (the first energy supply line and the second energy supply line) for energy supply is arranged, the wireless communication is used to replace the communication line, the setting of the wire harness on the current collector ring is reduced, the space where the current collector ring is arranged is facilitated to be arranged, and the wire harness is facilitated to be maintained.
[0018] 2. By setting the spatial relationship of the generator, the data transmitter, the first energy supply line and the second energy supply line, the first energy supply line and the second energy supply line can be separated, and the wiring can be facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a schematic diagram of the stereoscopic structure of Example 1;
[0020] Figure 2 is a flow chart of the energy supply relationship of Example 1;
[0021] Figure 3 is a flow chart of the signal transmission of Example 1.
[0022] Fig. 1 is a generator; Fig. 2 is a fan main shaft; Fig. 3 is a fan hub; Fig. 4 is a variable pitch controller; Fig. 5 is a current collector ring; Fig. 6 is a connecting rod; Fig. 7 is a blade; Fig. 8 is a variable pitch actuator; Fig. 9 is a data transmitter; Fig. 10 is a first energy supply line; Fig. 11 is a second energy supply line; Fig. 12 is a third energy supply line; Fig. 13 is a wire slot; Fig. 14 is a wind speed and direction instrument; Fig. 15 is a support table; Fig. 16 is a support column; Fig. 17 is a connecting column; Fig. 18 is a bearing plate; Fig. 19 is a bearing seat; Fig. 20 is a shaft coupling; and Fig. 21 is an encoder. DETAILED DESCRIPTION
[0023] The utility model will be further described in detail below in combination with the embodiments and drawings, but the implementation mode of the utility model is not limited to this.
[0024] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation.
[0025] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "open", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0026] Example 1
[0027] A variable pitch wind turbine with a wireless communication system, such as Figure 1 As shown, the system includes a generator 1 and a wind turbine main shaft 2 connected together. The wind turbine main shaft 2 is equipped with a wind turbine hub 3, a pitch controller 4, and a slip ring 5 for supplying power to the pitch controller 4. Three connecting rods 6 are connected to the wind turbine hub 3. A blade 7 is located at the end of each connecting rod 6 away from the wind turbine hub 3. A pitch actuator 8 is located between the blade 7 and the connecting rods 6. The system also includes a data transmitter 9, such as... Figure 1 , Figure 2 As shown, a first power supply line 10 is electrically connected between the generator 1 and the data transmitter 9, and a second power supply line 11 is electrically connected between the data transmitter 9 and the slip ring 5. The data transmitter 9 contains a first pitch wireless transceiver module, and the pitch controller 4 contains a second pitch wireless transceiver module for wireless communication with the first pitch wireless transceiver module. The pitch actuator 8 can use any existing technology on pitch wind turbines, and will not be described in detail. Its function is to realize the energy transmission of the generator 1 through the setting of the first power supply line 10 and the second power supply line 11, and to realize the signal transmission between the pitch controller 4 and the data transmitter 9 through the setting of the first pitch wireless transceiver module and the second pitch wireless transceiver module. Compared with the wired communication method used in the prior art, only the conductive lines (first power supply line 10 and second power supply line 11) for power supply are set, and wireless communication is used to replace the communication line, thereby reducing the wiring on the slip ring 5, which facilitates the arrangement of the space where the slip ring 5 is located and facilitates the management and maintenance of the wiring.
[0028] Specifically, such as Figure 1 , Figure 2 As shown, the pitch controller 4 and the pitch actuator 8 are electrically connected by a third power supply line 12. Its function is to enable the pitch controller 4 to transmit energy to the pitch actuator 8 while simultaneously transmitting information to the pitch actuator 8.
[0029] Specifically, such as Figure 1 As shown, the connecting rod 6 is provided with a cable tray 13 for placing the third power supply line 12.
[0030] Specifically, such as Figure 1 As shown, the wind turbine hub 3 is located on the top surface of the wind turbine main shaft 2, the pitch controller 4 is located on the top surface of the wind turbine hub 3, the slip ring 5 is sleeved on the wind turbine main shaft 2, and the pitch controller 4 includes a protective cover covering the top surface of the wind turbine hub 3. A connecting rod 6 passes through the protective cover and is connected to the top surface of the wind turbine hub 3. An anemometer 14 is located on the top surface of the protective cover. Its function is to protect the pitch controller 4 through the installation of the protective cover.
[0031] Specifically, such as Figure 3As shown, the wind speed and direction indicator 14 is arranged above the pitch controller 4, and the fourth energy supply line is connected between the pitch controller 4 and the wind speed sensor, and the fifth energy supply line is connected between the pitch controller 4 and the wind direction sensor. Through the arrangement of the fourth energy supply line, the pitch controller 4 can supply energy to the wind speed sensor and transmit information between the pitch controller 4 and the wind speed sensor. Through the arrangement of the fifth energy supply line, the pitch controller 4 can supply energy to the wind direction sensor and transmit information between the pitch controller 4 and the wind direction sensor.
[0032] Specifically, as shown in the figure, Figure 3 As shown, the wind speed and direction indicator 14 is arranged above the pitch controller 4, and the fourth energy supply line is connected between the pitch controller 4 and the wind speed sensor, and the fifth energy supply line is connected between the pitch controller 4 and the wind direction sensor. Through the arrangement of the fourth energy supply line, the pitch controller 4 can supply energy to the wind speed sensor and transmit information between the pitch controller 4 and the wind speed sensor. Through the arrangement of the fifth energy supply line, the pitch controller 4 can supply energy to the wind direction sensor and transmit information between the pitch controller 4 and the wind direction sensor.
[0033] Specifically, as shown in the figure, Figure 1 As shown, the support table 15 is connected with the support column 16 at the bottom, and the connecting column 17 is arranged at the top of the support table 15, and the bearing plate 18 is arranged at the top of the connecting column 17, and the bearing seat 19 is arranged on the bearing plate 18. The generator 1 and the data transmitter 9 are connected to the support table 15, and the pitch controller 4 is arranged directly above the bearing seat 19. Through the arrangement of the bearing plate 18, the bearing seat 19 can be supported. Through the arrangement of the support table 15, the generator 1 and the data transmitter 9 can be fixedly installed.
[0034] Specifically, as shown in the figure, Figure 1 As shown, the coupling 20 is arranged between the pitch controller 4 and the bearing seat 19, and between the fan main shaft 2 and the generator 1. The coupling 20 is a prior art and is not described in detail.
[0035] Specifically, as shown in the figure, Figure 1 As shown, the generator 1 is connected to the bottom of the support table 15, the data transmitter 9 is connected to the top of the support table 15, the current collector ring 5 is arranged above the data transmitter 9, one end of the first energy supply line 10 connected with the generator 1 is arranged below the generator 1, and one end of the first energy supply line 10 connected with the data transmitter 9 is arranged below one end of the second energy supply line 11 connected with the data transmitter 9. Through the spatial relationship between the generator 1, the data transmitter 9, the first energy supply line 10 and the second energy supply line 11, the first energy supply line 10 and the second energy supply line 11 can be separated, which is convenient for wiring.
[0036] Specifically, as shown in the figure, Figure 1As shown, the generator 1 is provided with an encoder 21 between the first energy supply line 10. The encoder 21 adopts the prior art, which is not described herein. The first energy supply line 10 also has the function of transmitting digital signals between the encoder 21 and the data transmitter 9.
[0037] The design principle of the embodiment is explained as follows: by setting the first and second wireless transceiver modules for variable pitch, the communication line between the variable pitch controller 4 and the data transmitter 9 is omitted; by setting the first and second wireless transceiver modules for wind speed and the first and second wireless transceiver modules for wind direction, the communication lines between the wind speed sensor and the variable pitch controller 4 and between the wind direction sensor and the variable pitch controller 4 are omitted; the first and third energy supply lines, although also having the function of data transmission, are necessary settings for energy transmission; by reducing the setting of the communication line as much as possible, the variable pitch wind turbine as a whole only has the energy supply line, so that the components on the variable pitch wind turbine can be arranged more flexibly.
[0038] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. According to the technical essence of the present application, any simple modification, equivalent replacement and improvement of the above embodiment within the spirit and principles of the present application are still within the protection scope of the technical scheme of the present application.
Claims
1. A variable pitch fan with a wireless communication system, comprising a generator (1) and a fan main shaft (2) connected together, the fan main shaft (2) being provided with a fan hub (3), a variable pitch controller (4) and a slip ring (5) for supplying power to the variable pitch controller (4), the fan hub (3) being connected with at least one connecting rod (6), the connecting rod (6) being provided with a blade (7) at an end away from the fan hub (3), and a variable pitch actuating mechanism (8) being arranged between the blade (7) and the connecting rod (6), characterized in that: The wind turbine further comprises a data transmitter (9), a first power supply line (10) is electrically connected between the generator (1) and the data transmitter (9), a second power supply line (11) is electrically connected between the data transmitter (9) and the slip ring (5), the data transmitter (9) is provided with a first wireless transceiver module for pitch control, and the pitch controller (4) is provided with a second wireless transceiver module for wireless communication with the first wireless transceiver module.
2. A variable pitch fan having a wireless communication system according to claim 1, characterised in that: The pitch controller (4) is electrically connected with the pitch actuator (8) through a third power supply line (12).
3. A variable pitch fan having a wireless communication system according to claim 2, wherein: The connecting rod (6) is provided with a wire slot (13) for placing the third power supply line (12).
4. A variable pitch fan having a wireless communication system according to claim 2, wherein: The wind turbine hub (3) is arranged on the top surface of the wind turbine main shaft (2), the pitch controller (4) is arranged on the top surface of the wind turbine hub (3), the slip ring (5) is sleeved on the wind turbine main shaft (2), the pitch controller (4) comprises a protective cover covering the top surface of the wind turbine hub (3), and the connecting rod (6) penetrates the protective cover and is connected to the top surface of the wind turbine hub (3).
5. The variable pitch fan having a wireless communication system of claim 1, wherein: The wind speed and direction instrument (14) comprises a wind speed sensor and a wind direction sensor.
6. A variable pitch fan having a wireless communication system according to claim 5, wherein: The pitch controller (4) is connected with the wind speed sensor through a fourth power supply line, and is connected with the wind direction sensor through a fifth power supply line.
7. The variable pitch fan having a wireless communication system of claim 1, wherein: The support table (15) is provided with a support column (16) connected to the bottom surface of the support table (15), a connecting column (17) arranged on the top surface of the support table (15), a bearing plate (18) arranged on the top surface of the connecting column (17), and a bearing seat (19) arranged on the bearing plate (18), the generator (1) and the data transmitter (9) are connected to the support table (15), and the pitch controller (4) is arranged directly above the bearing seat (19).
8. A variable pitch fan having a wireless communication system according to claim 7, characterised in that: The pitch controller (4) and the bearing seat (19), and the wind turbine main shaft (2) and the generator (1) are both provided with a shaft coupling (20).
9. A variable pitch fan having a wireless communication system according to claim 7, wherein: The generator (1) is connected to the bottom surface of the support table (15), the data transmitter (9) is connected to the top surface of the support table (15), the slip ring (5) is arranged above the data transmitter (9), one end of the first power supply line (10) connected with the generator (1) is arranged below the generator (1), and one end of the first power supply line (10) connected with the data transmitter (9) is arranged below one end of the second power supply line (11) connected with the data transmitter (9).
10. The variable pitch fan of claim 7, wherein: The generator (1) and the first power supply line (10) are provided with an encoder (21).