Refrigerating device for wind driven generator

Abstract

The embodiment of the invention provides a refrigerating device for a wind driven generator, and relates to the field of wind power generation. A refrigerating device for a wind driven generator comprises a connecting rod, two cooling devices and a driving mechanism. The connecting rod is rotationally installed on a fan rotating rod, the two cooling devices are fixedly connected with the connecting rod, and the driving mechanism is used for driving the cooling devices to swing. Cooling air flow or cooling liquid generated by the cooling device can effectively reduce the surface temperature of the generator, and equipment faults caused by overheating are avoided.

Description

Technical Field

[0001] The invention relates to the field of wind power generation, and in particular to a refrigeration device for a wind power generator. Background Art

[0002] As a clean and renewable energy technology, wind power generation has been widely used in recent years. Wind power generation uses wind power to drive the wind rotor to rotate, and through the rotation, it drives the generator to generate electricity. It has the advantages of being environmentally friendly and inexhaustible resources. Against the background of the global energy structure transformation, the installed capacity of wind power generation continues to grow. It is not only widely used in centralized wind farms, but also gradually expanded to distributed wind power systems, providing an important guarantee for power supply.

[0003] However, during the operation of wind turbines, the core components of the generators will inevitably generate a lot of heat due to high-speed operation and electromagnetic effects. If this heat cannot be effectively dissipated, it may cause the temperature of the generator to gradually increase, thereby affecting its working efficiency and service life. Most of the existing wind power generation equipment is not equipped with special heat dissipation or cooling devices. Especially when the wind speed is low or the ambient temperature is high, the problem of heat accumulation in the generator is particularly prominent. This situation may not only cause equipment damage, but also increase maintenance costs and reduce the overall benefits of wind power generation. Summary of the invention

[0004] According to an embodiment of the present invention, a refrigeration device for a wind turbine is provided to solve the problems raised by the above background technology.

[0005] In a first aspect of the present invention, a refrigeration device for a wind turbine is provided, comprising: a connecting rod, two cooling devices and a driving mechanism; the connecting rod is rotatably mounted on a fan rotating rod, the two cooling devices are respectively fixedly connected to the connecting rod, and the driving mechanism is used to drive the cooling devices to swing.

[0006] Preferably, the cooling device includes a vortex chamber, a hot air exhaust pipe, a cold air exhaust pipe and an air inlet pipe; the vortex chamber is fixedly connected to the connecting rod, the hot air exhaust pipe is connected to the vortex chamber and passes through the connecting rod, the cold air exhaust pipe is connected to the vortex chamber, and the air inlet pipe is connected to the vortex chamber.

[0007] Preferably, it also includes an air compressor, which is connected to the air inlet pipe.

[0008] Preferably, the driving mechanism is an electric push rod, the output end of the driving mechanism is rotatably connected to the connecting rod, and the other end of the driving mechanism is rotatably connected to the cavity.

[0009] Preferably, it further comprises a plurality of temperature sensors, wherein the temperature sensors are arranged on the wind turbine and are used to monitor the temperature of the wind turbine.

[0010] Preferably, it also includes a controller, the controller is connected to the temperature sensor, and the controller is also connected to the driving mechanism

[0011] Preferably, the controller includes a data receiving module, a data processing module and a control unit; the data receiving module is intercepted by the temperature sensor and the data processing module, the data processing module is connected to the control unit, and the control unit is connected to the driving mechanism.

[0012] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0013] The present invention provides a cooling device for a wind turbine generator, which provides a part of the inertial power to the connecting rod through the rotation of the wind turbine rotating rod, and the driving mechanism further controls the motion trajectory of the cooling device, so that it swings to the part of the generator where the heat is concentrated for cooling. The cooling airflow or coolant generated by the cooling device can effectively reduce the surface temperature of the generator and avoid equipment failure caused by overheating.

[0014] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other features, advantages and aspects of the embodiments of the present invention will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a refrigeration device for a wind turbine according to an embodiment of the present invention is shown;

[0017] Figure 2 A schematic diagram of the main structure of a refrigeration device for a wind turbine according to an embodiment of the present invention is shown;

[0018] Figure 3 A schematic side view of the structure of a refrigeration device for a wind turbine according to an embodiment of the present invention is shown;

[0019] Figure 4 A schematic structural diagram of a refrigeration device for a wind turbine according to an embodiment of the present invention installed in a cavity is shown.

[0020] Figure 5A system block diagram of a controller for a refrigeration device of a wind turbine generator according to an embodiment of the present invention is shown.

[0021] Description of Reference Numerals

[0022] 1-connecting rod, 2-cooling device, 21-vortex chamber, 22-hot air exhaust pipe, 23-cold air exhaust pipe, 24-air inlet pipe, 3-driving mechanism, 4-fan rotating rod, 5-cavity, 6-temperature sensor, 7-wind generator, 8-controller, 81-module, 82-data processing module, 83-control unit. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] like Figures 1 to 5 As shown, the refrigeration device for a wind turbine generator comprises a connecting rod 1, two cooling devices 2 and a driving mechanism 3; the refrigeration device can effectively cool the heat generated by the wind turbine generator during operation, thereby improving the working efficiency and reliability of the generator.

[0026] One end of the connecting rod 1 is rotatably mounted on the rotating rod 4 of the wind turbine, and the other end is fixedly connected to two cooling devices 2. The cooling devices 2 are symmetrically distributed and are respectively located on both sides of the connecting rod 1. Their main function is to transport the cooling medium to the high-temperature part of the generator by swinging, thereby achieving heat dissipation. The cooling device 2 may include a fan, a liquid cooling device or other device that can effectively transfer heat, and an appropriate cooling method is selected according to actual needs.

[0027] The driving mechanism 3 is mounted on a fixed base of the generator, and one end of the driving mechanism 3 is fixedly connected to the connecting rod 1. By providing a periodic driving force, the connecting rod 1 drives the cooling device 2 to swing within a specific range. The swinging motion can enable the cooling device 2 to cover multiple high-temperature parts of the generator to ensure uniform cooling effect. The driving mechanism 3 can be driven by a motor, hydraulically driven or other forms of driving devices, and the driving frequency and swing amplitude can be adjusted by the control unit to meet the cooling requirements under different operating conditions.

[0028] In the specific working process, the rotation of the wind turbine rotating rod 4 provides part of the inertial power for the connecting rod 1, and the driving mechanism 3 further controls the movement trajectory of the cooling device 2, so that it swings to the part where the heat of the generator is concentrated for cooling. The cooling airflow or coolant generated by the cooling device 2 can effectively reduce the surface temperature of the generator and avoid equipment failure caused by overheating.

[0029] In this embodiment, the cooling device 2 includes a vortex chamber 21, a hot air exhaust pipe 22, a cold air exhaust pipe 23 and an air inlet pipe 24. The vortex chamber 21 is fixedly connected to the connecting rod 1, and can cool different parts of the wind turbine as the connecting rod 1 swings. The hot air exhaust pipe 22 is connected to the vortex chamber 21 and passes through the connecting rod 1, and is used to discharge the hot air in the vortex chamber 21. The cold air exhaust pipe 23 is also connected to the vortex chamber 21, and is used to output the cooled air. The air inlet pipe 24 is used to input air into the vortex chamber 21, and is connected to an external air compressor to ensure the continuous supply of airflow in the vortex chamber 21.

[0030] The air compressor provided in this embodiment is connected to the air inlet pipe 24, and compresses the air to form a high-pressure airflow that enters the vortex chamber 21. In the vortex chamber 21, the high-pressure airflow generates a vortex effect, which causes the temperature of the airflow to be stratified, and the high-temperature gas is discharged through the hot air discharge pipe 22, while the cooling airflow is output through the cold air discharge pipe 23, thereby realizing the cooling of the wind turbine.

[0031] The driving mechanism 3 adopts an electric push rod structure, the output end of which is rotatably connected to the connecting rod 1, and the other end is rotatably connected to the cavity 5. The driving of the electric push rod can realize the periodic swing of the connecting rod 1, thereby driving the cooling device 2 to cover multiple high-temperature areas of the wind turbine to ensure uniform cooling effect.

[0032] In addition, the present embodiment further includes a plurality of temperature sensors 6, which are installed at different locations of the wind turbine 7 and are used to monitor the temperature change of the wind turbine in real time. The temperature sensors 6 are connected to the controller 8, and the monitoring data will be transmitted to the controller 8 in real time for processing.

[0033] The controller 8 is responsible for adjusting the operating parameters of the drive mechanism 3 according to the monitoring data of the temperature sensor 6, so as to optimize the working state of the cooling device 2. The controller 8 includes a data receiving module 81, a data processing module 82 and a control unit 83. The data receiving module 81 receives the temperature data from the temperature sensor 6 and transmits the data to the data processing module 82 for analysis and processing. The data processing module 82 analyzes the temperature distribution of different areas of the wind turbine and controls the drive mechanism 3 through the control unit 83, so as to adjust the swing range and frequency of the cooling device 2 to meet the cooling demand.

[0034] In this embodiment, the controller 8 specifically includes a data receiving module 81, a data processing module 82 and a control unit 83. The data receiving module 81 is connected to the temperature sensor 6 to receive the temperature data of each part of the wind turbine 7 in real time; at the same time, the data receiving module 81 is connected to the data processing module 82 to transmit the received temperature data to the data processing module 82 for analysis and processing.

[0035] The data processing module 82 compares and analyzes the temperature data of each monitoring point based on a preset temperature threshold to determine whether the wind turbine is overheated, and generates a control instruction based on the analysis result. The data processing module 82 is connected to the control unit 83 to transmit the analysis result and the control instruction to the control unit 83.

[0036] The control unit 83 controls the operating parameters of the driving mechanism 3, including the driving frequency, the swing range, etc., according to the received control instructions, so as to adjust the motion state of the connecting rod 1 and its cooling device 2, and ensure that the cooling device can efficiently cool the high-temperature parts. In addition, the control unit 83 can also dynamically adjust the cooling mode according to the real-time temperature changes to optimize the cooling efficiency.

[0037] Through the modular design of the controller 8, a closed-loop regulation process from temperature monitoring to drive mechanism control can be realized, which further improves the intelligence level and adaptability of the cooling device and ensures the stable operation of the wind turbine under different working conditions.

[0038] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigeration device for a wind turbine, characterized in that: include: A connecting rod (1), two cooling devices (2) and a driving mechanism (3); the connecting rod (1) is rotatably mounted on a fan rotating rod (4), the two cooling devices (2) are respectively fixedly connected to the connecting rod (1), and the driving mechanism (3) is used to drive the cooling devices (2) to swing.

2. The refrigeration device for a wind turbine according to claim 1, characterized in that: The cooling device (2) comprises a vortex chamber (21), a hot air exhaust pipe (22), a cold air exhaust pipe (23) and an air inlet pipe (24); the vortex chamber (21) is fixedly connected to the connecting rod (1), the hot air exhaust pipe (22) is connected to the vortex chamber (21) and passes through the connecting rod (1), the cold air exhaust pipe (23) is connected to the vortex chamber (21), and the air inlet pipe (24) is connected to the vortex chamber (21).

3. The refrigeration device for a wind turbine according to claim 1, characterized in that: It also includes an air compressor, which is connected to the air inlet pipe (24).

4. The refrigeration device for a wind turbine according to claim 1, characterized in that: The driving mechanism (3) is an electric push rod, the output end of the driving mechanism (3) is rotationally connected to the connecting rod (1), and the other end of the driving mechanism (3) is rotationally connected to the cavity (5).

5. The refrigeration device for a wind turbine according to claim 1, characterized in that: It also includes a plurality of temperature sensors (6), wherein the temperature sensors (6) are arranged on the wind turbine (7) and are used to monitor the temperature of the wind turbine (7).

6. The refrigeration device for a wind turbine according to claim 1, characterized in that: It also comprises a controller (8), wherein the controller (8) is connected to the temperature sensor (6), and the controller (8) is also connected to the driving mechanism (3).

7. The refrigeration device for a wind turbine according to claim 1, characterized in that: The controller (8) comprises a data receiving module (81), a data processing module (82) and a control unit (83); the data receiving module (81) is connected to the temperature sensor (6) and the data processing module (82), the data processing module (82) is connected to the control unit (83), and the control unit (83) is connected to the driving mechanism (3).

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