Heat dissipation device of wind generating set
By designing a heat dissipation device in the wind turbine generator set and using a rain sensor to control the protective plate to block the air inlet and outlet, the problems of heat dissipation and rainwater ingress inside the nacelle are solved, achieving the effects of moisture prevention and impurity prevention, and ensuring the normal operation of the generator.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CGN NEW ENERGY IND CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-17
AI Technical Summary
The temperature inside the nacelle of a wind turbine is high due to the heat generated by the gearbox and generator during operation, and rainwater can easily enter through the cooling vents during rain, causing the generator to become damp and malfunction.
A heat dissipation device was designed, comprising an impeller, a protective plate, an electric push rod, and a rain sensor. The rain sensor detects rainwater signals and controls the protective plate to tilt and block the air inlet and outlet to prevent rainwater from entering. At the same time, a filter and an elastic plate are set to prevent impurities from entering.
It effectively prevents rainwater from entering the engine compartment, avoids the generator getting damp, ensures the generator works normally, and prevents impurities from entering and affecting the heat dissipation effect.
Smart Images
Figure CN224134778U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind power generation technology, specifically to a heat dissipation device for wind turbine generator sets. Background Technology
[0002] In the process of wind power generation, since the wind turbine rotates at a relatively slow speed, a gearbox is needed to increase the speed of the wind turbine and transmit it to the generator to generate electricity. The gearbox and generator are usually located in the nacelle.
[0003] During the power generation process, the operation of the gearbox and the generator within the nacelle generates heat from friction between the gears and from the generator itself, resulting in a high temperature inside the nacelle. Currently, heat dissipation is achieved by directly installing ventilation holes on the nacelle, which are exposed to the outside. This means that during rainy days, rainwater can easily flow onto the nacelle and partially enter through the ventilation holes, causing a certain amount of rainwater to accumulate inside. This can easily lead to moisture damage to the generator, causing malfunctions and affecting its normal power generation. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a heat dissipation device for wind turbine generator sets.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A cooling device for a wind turbine generator set, comprising:
[0007] A base, the upper end of which is sealed and fixedly connected to a nacelle, a gearbox is installed inside the nacelle, a generator is installed inside the nacelle, a wind turbine is installed on one side of the gearbox via an input shaft, and the other side of the gearbox is connected to the generator via an output shaft;
[0008] The heat dissipation mechanism includes multiple impellers fixedly connected to the side wall of the output shaft, multiple air inlets are provided above the inner wall of the nacelle, multiple air outlets are provided below the inner wall of the nacelle, and protective plates are rotatably connected to both side walls of the nacelle, one of the protective plates is close to the air inlet, and the other is close to the air outlet. The nacelle is provided with a rotating mechanism that drives the two protective plates to rotate.
[0009] Preferably, the lower sides of both protective panels are connected to the cabin sidewalls via filters, the filters being pleated, and both sides of the protective panels are connected to the cabin sidewalls via elastic plates.
[0010] Preferably, the rotating mechanism includes two electric push rods fixedly connected to the upper end of the cabin. The movable ends of the two electric push rods are fixedly connected to a horizontal plate. The lower end of the horizontal plate is fixedly connected to two first rods corresponding to the two protective plates. The lower ends of the two first rods are rotatably connected to second rods. The side wall of the second rod away from the first rod is rotatably connected to the upper end of the protective plate it is close to.
[0011] Preferably, the plurality of air inlets are located in the space formed by one of the protective plates, one of the filters and two of the elastic plates, and the plurality of air outlets are located in the space formed by another protective plate, another filter and two more elastic plates.
[0012] Preferably, a rain sensor is installed inside the cabin, and the rain sensor is electrically connected to two electric actuators through an external control mechanism.
[0013] This utility model has the following beneficial effects:
[0014] 1. A heat dissipation mechanism is installed. When it rains outside, the rain sensor detects the rain signal and controls two electric push rods to retract via an external control mechanism. This causes the crossbar to move down two first rods, which in turn drive two second rods to rotate two protective plates downwards. This tilts and blocks multiple air inlets and outlets, preventing rainwater from entering the nacelle through these openings. Otherwise, a certain amount of rainwater will accumulate inside the nacelle, easily causing the generator to become damp and malfunction, affecting its normal power generation.
[0015] 2. Installing filters and flexible panels can prevent external impurities from entering the cabin through the air inlet and outlet. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a heat dissipation device for a wind turbine generator set proposed in this utility model;
[0017] Figure 2 for Figure 1 A schematic diagram of the vertical sectional structure;
[0018] Figure 3 for Figure 1 A schematic diagram of the rear view structure.
[0019] In the diagram: 1. Base; 2. Cabin; 3. Gearbox; 4. Input shaft; 5. Wind turbine; 6. Output shaft; 7. Generator; 8. Impeller; 9. Air inlet; 10. Air outlet; 11. Protective plate; 12. Filter screen; 13. Elastic plate; 14. Electric push rod; 15. Horizontal plate; 16. First rod; 17. Second rod; 18. Rain sensor. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Reference Figures 1-3 A wind turbine generator cooling device includes a base 1, with a nacelle 2 sealed and fixedly connected to the upper end of the base 1. A gearbox 3 is installed inside the nacelle 2, and a generator 7 is installed inside the nacelle 2. A wind turbine component 5 is installed on one side of the gearbox 3 via an input shaft 4, and the other side of the gearbox 3 is connected to the generator 7 via an output shaft 6. The gearbox 3 can increase the rotational speed of the wind turbine component 5 and transmit it to the generator 7 to realize the power generation of the generator 7. The speed-increasing structure of the gearbox 3 is existing technology and will not be described in detail here.
[0022] The heat dissipation mechanism includes multiple impellers 8 fixedly connected to the side wall of the output shaft 6, multiple air inlets 9 are opened on the upper part of the inner wall of the nacelle 2, multiple air outlets 10 are opened on the lower part of the inner wall of the nacelle 2, and protective plates 11 are rotatably connected to both side walls of the nacelle 2. One protective plate 11 is close to the air inlet 9, and the other protective plate 11 is close to the air outlet 10. The nacelle 2 is provided with a rotating mechanism that drives the two protective plates 11 to rotate.
[0023] The rotating mechanism includes two electric push rods 14 fixedly connected to the upper end of the cabin 2. The movable ends of the two electric push rods 14 are fixedly connected to a horizontal plate 15. The lower end of the horizontal plate 15 is fixedly connected to two first rods 16 corresponding to the two protective plates 11. The lower ends of the two first rods 16 are rotatably connected to second rods 17. The side wall of the second rod 17 away from the first rod 16 is rotatably connected to the upper end of the adjacent protective plate 11.
[0024] A rain sensor 18 is installed inside the cabin 2. The rain sensor 18 is electrically connected to two electric push rods 14 through an external control mechanism.
[0025] When it rains outside, the rain sensor 18 detects the rain signal and controls the two electric push rods 14 to retract via the external control mechanism. This causes the cross plate 15 to move the two first rods 16 downwards. The two first rods 16 then drive the two protective plates 11 downwards via the two second rods 17, tilting and blocking multiple air inlets 9 and multiple air outlets 10. This prevents rainwater from entering the engine compartment 2 through the air inlets 9 and multiple air outlets 10, which would cause a certain amount of rainwater to accumulate inside the engine compartment 2. This could easily lead to moisture damage to the generator 7, causing malfunctions and affecting its normal power generation.
[0026] It should be noted that the rain sensor 18 is an optical sensor. Its working principle is that there is a light-emitting diode in the optical sensor, which emits a beam of conical light. It can receive the change in the total amount of light reflected onto the optical sensor, thereby detecting the presence of rain. Its sensing technology is existing technology and will not be described in detail here.
[0027] Both protective panels 11 are connected to the side wall of the cabin 2 via filters 12 at their lower sides. The filters 12 are pleated (e.g., Figure 1 As shown), both side walls of the two protective plates 11 are connected to the side walls of the cabin 2 via elastic plates 13 (as shown). Figure 1 and Figure 3 (As shown).
[0028] Multiple air inlets 9 are located in the space formed by one protective plate 11, one filter 12 and two elastic plates 13, and multiple air outlets 10 are located in the space formed by another protective plate 11, another filter 12 and two more elastic plates 13.
[0029] The space formed by one protective plate 11, one filter 12 and two elastic plates 13 can protect multiple air inlets 9 to prevent external impurities from entering the cabin 2 through the air inlets 9. The space formed by another protective plate 11, another filter 12 and two more elastic plates 13 can protect multiple air outlets 10 to prevent external impurities from entering the cabin 2 through the air outlets 10.
[0030] When this wind turbine generator is running, the wind turbine 5 rotates under the action of external wind force. At this time, the speed of the wind turbine 5 will be increased by the input shaft 4 through the gearbox 3, and its high speed will be transmitted to the generator 7 through the output shaft 6 to realize the power generation of the generator 7.
[0031] At the same time, the high-speed rotation of the output shaft 6 drives multiple impellers 8 to rotate at high speed, so that the outside air enters the nacelle 2 through multiple air inlets 9 and then flows out through multiple air outlets 10, carrying away the heat inside the nacelle 2.
[0032] When it rains outside, the rain sensor 18 detects the rain signal and controls the two electric push rods 14 to retract via the external control mechanism. This causes the cross plate 15 to move the two first rods 16 downwards. The two first rods 16 then drive the two protective plates 11 downwards via the two second rods 17, tilting and blocking multiple air inlets 9 and multiple air outlets 10. This prevents rainwater from entering the engine compartment 2 through the air inlets 9 and multiple air outlets 10, which would cause a certain amount of rainwater to accumulate inside the engine compartment 2. This could easily lead to moisture damage to the generator 7, causing malfunctions and affecting its normal power generation.
[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A wind turbine cooling device, characterized in that, include: A base (1) is sealed and fixedly connected to a nacelle (2) at its upper end. A gearbox (3) is installed inside the nacelle (2). A generator (7) is installed inside the nacelle (2). A wind turbine (5) is installed on one side of the gearbox (3) via an input shaft (4). The other side of the gearbox (3) is connected to the generator (7) via an output shaft (6). The heat dissipation mechanism includes multiple impellers (8) fixedly connected to the side wall of the output shaft (6), multiple air inlets (9) are provided above the inner wall of the nacelle (2), multiple air outlets (10) are provided below the inner wall of the nacelle (2), and protective plates (11) are rotatably connected to both sides of the nacelle (2). One of the protective plates (11) is close to the air inlet (9), and the other protective plate (11) is close to the air outlet (10). The nacelle (2) is provided with a rotating mechanism that drives the two protective plates (11) to rotate.
2. A wind turbine cooling device according to claim 1, wherein, The two protective plates (11) are connected to the side wall of the cabin (2) via a filter screen (12) at the bottom. The filter screen (12) is pleated. The two protective plates (11) are connected to the side wall of the cabin (2) via an elastic plate (13).
3. The wind turbine cooling system of claim 1, wherein, The rotating mechanism includes two electric push rods (14) fixedly connected to the upper end of the cabin (2). The movable ends of the two electric push rods (14) are fixedly connected to a horizontal plate (15). The lower end of the horizontal plate (15) is fixedly connected to two first rods (16) corresponding to the two protective plates (11). The lower ends of the two first rods (16) are rotatably connected to a second rod (17). The side wall of the second rod (17) away from the first rod (16) is rotatably connected to the upper end of the protective plate (11) that is close to it.
4. The wind turbine cooling system of claim 2, wherein, The plurality of air inlets (9) are located in the space formed by one of the protective plates (11), one of the filters (12) and two of the elastic plates (13), and the plurality of air outlets (10) are located in the space formed by another protective plate (11), another filter (12) and another two elastic plates (13).
5. The wind turbine cooling system of claim 3, wherein, A rain sensor (18) is installed inside the cabin (2), and the rain sensor (18) is electrically connected to two electric push rods (14) through an external control mechanism.