Wind power fan with variable temperature structure

Abstract

The invention relates to the technical field of wind power generation. The wind power draught fan comprises a cabin, a hub, paddles, a heat dissipation mechanism and a supporting mechanism, the cabin is provided with two layers, the heat dissipation mechanism is arranged on the first layer of the cabin, and a bearing, a speed change assembly, a power generation assembly and a main shaft are arranged in the second layer of the cabin; the two ends of the main shaft are connected with the hub and the speed change assembly respectively, the speed change assembly is connected with the power generation assembly, the bearing is arranged on the main shaft, the paddles are installed on the hub, and the supporting mechanism is connected with the cabin. Wherein the heat dissipation mechanism is used for conducting heat dissipation treatment on the second layer of the cabin; the supporting mechanism is used for fixing and supporting the cabin. The second layer of the cabin is subjected to heat dissipation treatment through the heat dissipation mechanism, and the problem that in an existing fan design, components in the cabin are insufficient in heat dissipation under high-strength and long-time operation is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a wind power fan provided with a temperature variable structure. Background Art

[0002] In the field of wind power generation, wind turbines are key equipment for converting wind energy into electrical energy. Their performance and reliability are directly related to the power generation efficiency and operation and maintenance costs of the entire wind farm. With the continuous development of wind power technology, the design requirements for wind turbines are also increasing, especially in terms of improving energy conversion efficiency, enhancing equipment durability, and optimizing operation and maintenance management.

[0003] Traditional fan designs often overlook the heat dissipation issues of internal components in the nacelle under high-intensity, long-term operation. These components generate a large amount of heat during operation. If it cannot be dissipated effectively and promptly, the component temperature will rise, which will not only affect equipment performance but may also accelerate component aging, shorten service life, and increase failure rate and operation and maintenance costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a wind turbine with a variable temperature structure, aiming to solve the problem of insufficient heat dissipation of internal components of the nacelle under high-intensity and long-term operation in existing wind turbine designs.

[0005] The present invention is achieved through the following technical solutions:

[0006] A wind turbine for wind power generation with a variable temperature structure, comprising: a nacelle, a hub, blades, a heat dissipation mechanism, and a support mechanism, wherein the nacelle is provided with two layers, the heat dissipation mechanism is provided on the first layer of the nacelle, and the second layer of the nacelle is provided with a bearing, a speed change assembly, a power generation assembly, and a main shaft, the two ends of the main shaft are respectively connected to the hub and the speed change assembly, the speed change assembly is connected to the power generation assembly, the bearing is provided on the main shaft, the blades are mounted on the hub, and the support mechanism is connected to the nacelle;

[0007] The heat dissipation mechanism is used to dissipate heat for the second layer of the cabin; and the support mechanism is used to fix and support the cabin.

[0008] Optionally, the heat dissipation mechanism includes: a guide assembly, a baffle and a heat dissipation assembly, the guide assembly passes through the first layer surface of the cabin, the baffle is a partition between the first layer of the cabin and the second layer of the cabin, the heat dissipation assembly is arranged in the second layer of the cabin, and the heat dissipation assembly is connected to the baffle; wherein, the guide assembly is used to introduce external airflow into the first layer of the cabin.

[0009] Optionally, the guide component is plate-shaped, there are several guide components, an air inlet is opened on the cabin, the air inlet is connected to the first layer of the cabin, and several guide components are evenly spaced at the air inlet.

[0010] Optionally, there are multiple air inlets, and the multiple air inlet arrays are distributed on the cabin.

[0011] Optionally, a heating mechanism is further included, which is arranged on the bearing, and a lubricating liquid is provided at the connection portion between the bearing and the main shaft; wherein the heating mechanism is used to heat the lubricating liquid.

[0012] Optionally, the heating mechanism includes a heating component and a power supply component, the heating component is connected to the power supply component, a cavity is provided in the bearing, a partition is provided in the cavity, the partition divides the cavity into a first chamber and a second chamber, the heating component is provided in the first chamber, the main shaft passes through the second chamber, and the lubricating fluid is provided in the second chamber.

[0013] Optionally, a rotating assembly is provided in the second chamber, the rotating assembly is in contact with the main shaft, the rotating assembly is rotatably connected to the inner side of the second chamber, and the rotation axis of the rotating assembly is parallel to the axis of the main shaft.

[0014] Optionally, there are multiple rotating components, and the multiple rotating components are distributed in a circular array around the axis of the main shaft.

[0015] Optionally, a conduit is provided on the bearing, the lower end of the conduit is communicated with the second chamber, the upper end of the conduit passes through the cabin, and the upper end of the conduit is provided with an end cover.

[0016] Optionally, the support mechanism includes a first support assembly and a second support assembly, the upper end of the first support assembly is connected to the cabin, and the lower end of the first support assembly is detachably connected to the second support assembly.

[0017] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0018] Improved heat dissipation efficiency: The heat dissipation mechanism dissipates heat from the second layer of the nacelle, effectively solving the problem of insufficient heat dissipation of internal components under high-intensity, long-term operation in traditional fan designs. This helps reduce the operating temperature of key components, thereby improving the overall performance and reliability of the equipment.

[0019] Extending equipment life: Timely and effective heat dissipation can slow down the aging of components and extend the service life of key components such as bearings, speed change components, and power generation components, thereby reducing the operation and maintenance costs of wind farms and the frequency of component replacement.

[0020] Improve energy conversion efficiency: After optimizing the heat dissipation system, the internal components of the nacelle can be maintained within a more suitable operating temperature range, which helps to improve the energy conversion efficiency of the wind turbine and enable the wind farm to generate more electricity.

[0021] Enhanced equipment stability: This helps reduce equipment failures due to overheating, thereby improving the overall stability and reliability of the wind farm and reducing power losses due to downtime for maintenance.

[0022] Optimize operation and maintenance management: By reducing the failure rate caused by heat dissipation problems, operation and maintenance management becomes simpler and more efficient, reducing the labor intensity and maintenance costs of operation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a wind turbine with a temperature-variable structure according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the first layer of a wind turbine nacelle with a temperature variable structure according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the second-layer internal structure of a wind turbine nacelle with a temperature-variable structure according to an embodiment of the present invention;

[0026] Figure 4 A schematic partial cross-sectional view of a bearing and a speed change assembly of a wind turbine with a temperature change structure according to an embodiment of the present invention;

[0027] Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0028] Figure 6 A schematic diagram of a bearing structure of a wind turbine housing provided with a temperature-variable structure according to an embodiment of the present invention;

[0029] Legend: 1-nacelle, 2-hub, 3-blade, 4-first support assembly, 5-second support assembly, 6-bearing, 601-partition, 7-speed transmission assembly, 8-power generation assembly, 9-flow guide assembly, 10-baffle, 11-heat dissipation assembly, 12-rotation assembly, 13-heating assembly, 14-duct, 15-main shaft. DETAILED DESCRIPTION

[0030] The following is a specific implementation method with reference to the accompanying drawings.

[0031] Reference Figure 1 A wind turbine with a variable temperature structure includes: a nacelle 1, a hub 2, blades 3, a heat dissipation mechanism, and a support mechanism. The nacelle 1 is provided with two layers, and the heat dissipation mechanism is provided on the first layer of the nacelle 1. The second layer of the nacelle 1 is provided with a bearing 6, a speed change assembly 7, a power generation assembly 8, and a main shaft 15. The two ends of the main shaft 15 are respectively connected to the hub 2 and the speed change assembly 7. The speed change assembly 7 is connected to the power generation assembly 8. The bearing 6 is provided on the main shaft 15. The blades 3 are mounted on the hub 2. The support mechanism is connected to the nacelle 1. The heat dissipation mechanism is used to dissipate heat from the second layer of the nacelle 1. The support mechanism is used to fix and support the nacelle 1. The power generation assembly 8 can be a generator. The speed change assembly 7 can be a gearbox, primarily composed of an input shaft, an output shaft, various gear pairs, bearings, a housing, a lubrication system, and a control system. The input shaft is directly connected to the main shaft and receives rotational power from the wind rotor. Each gear pair meshes with gears of varying tooth counts to reduce or increase the rotational speed to meet the generator's speed requirements. Bearings support the gears and shafts, ensuring smooth and reliable transmission. The housing, serving as the outer shell of the gearbox, protects the internal gears and bearings from environmental influences while providing sufficient rigidity and strength to withstand the loads during transmission. The lubrication system provides necessary lubrication for the gears and bearings, reducing wear and improving transmission efficiency and service life. The lubrication system typically includes an oil pump, oil tank, filter, and cooling device. The control system monitors the gearbox's operating status, such as temperature and vibration, and initiates adjustments or alarms when necessary. When the wind rotor rotates, the main shaft drives the input shaft, which in turn drives the various gear pairs. The meshing of gears with varying tooth counts allows for speed conversion. Ultimately, the adjusted speed is transmitted to the generator via the output shaft, which converts mechanical energy into electrical energy. During the operation of the fan, the guide component 9 introduces external cold air into the interior of the nacelle 1, and heat is exchanged through the baffle 10 and the heat dissipation component 11 to achieve a heat dissipation effect; the support mechanism ensures the stability and safety of the entire fan, enabling it to operate stably in various harsh environments.

[0032] In some embodiments, reference Figure 2The heat dissipation mechanism includes an air guide assembly 9, a baffle 10, and a heat sink assembly 11. The air guide assembly 9 extends through the first layer of the nacelle 1. The baffle 10 serves as a separator between the first and second layers of the nacelle 1. The heat sink assembly 11 is located within the second layer of the nacelle 1 and is connected to the baffle 10. The air guide assembly 9 is used to direct external airflow into the first layer of the nacelle 1. The baffle 10, which serves as a separator between the first and second layers of the nacelle 1, is made of a durable metal material such as stainless steel or aluminum alloy. The baffle 10 not only serves as a partition but also prevents rainwater and other external impurities from entering the nacelle, protecting internal components from damage. The heat sink assembly 11 consists of a series of fins made of high-thermal-conductivity materials such as copper or aluminum. The shape and arrangement of the fins are optimized to maximize the heat dissipation area, thereby improving heat dissipation efficiency. The heat sink assembly 11 is located within the second layer of the nacelle 1 and is tightly connected to the baffle 10. It is located near internal components (such as bearings, transmission components, and power generation components) to effectively absorb and dissipate the heat generated by these components. External airflow is introduced into the first layer of nacelle 1 by air guide assembly 9. The airflow passes over the surface of baffle 10 and transfers heat from the second layer of nacelle 1 to baffle 10 via heat dissipation assembly 11. The airflow then removes the heat absorbed by baffle 10, achieving heat exchange. This heat exchange process effectively reduces the temperature of internal components, thereby improving equipment performance and reliability.

[0033] In some embodiments, reference Figure 3 The guide assembly 9 is plate-shaped, and there are several guide assemblies 9. An air inlet is opened on the cabin 1, and the air inlet is connected to the first layer of the cabin 1. Several guide assemblies 9 are evenly spaced at the air inlet. The guide assembly 9 is made of lightweight and strong materials, such as aluminum alloy or high-strength plastic, to ensure that it can remain stable under various weather conditions. Each guide assembly 9 is a plate-shaped structure with a certain curvature and inclination to more effectively guide the airflow. The air inlet is designed to match the shape and number of the guide assembly 9 to ensure that the airflow can enter the cabin smoothly. The number and arrangement of the guide assemblies 9 can be adjusted according to the size of the cabin and the layout of the internal components. When the external airflow is guided to the guide assembly 9, it will enter the first layer of the cabin 1 along the curvature and inclination of the guide assembly 9. This design not only improves the efficiency of airflow guidance, but also reduces the turbulence and resistance of the airflow outside the cabin.

[0034] In some embodiments, there are several air inlets, and the air inlets are distributed in arrays on the cabin 1. The air inlet is a channel for external air to enter the interior of the cabin 1. By designing multiple air inlets, the air circulation area can be increased, the air flow rate can be increased, and the heat dissipation inside the cabin 1 can be accelerated. At the same time, the array distribution method can ensure that the air is evenly distributed inside the cabin 1, avoiding local overheating or uneven heat dissipation. In order to further improve the heat dissipation efficiency, the design of the air inlet can also be optimized. For example, an adjustable air inlet design can be used to adjust the opening of the air inlet according to the change in the temperature inside the cabin 1, thereby controlling the air flow. In addition, a filtering device can be provided at the air inlet to prevent dust and debris from entering the interior of the cabin and protect the normal operation of internal components.

[0035] In some embodiments, a heating mechanism is further included. The heating mechanism is disposed on the bearing 6. Lubricating fluid is provided at the connection between the bearing 6 and the main shaft 15. The heating mechanism is used to heat the lubricating fluid. When the ambient temperature is too low, conventional lubricating fluids may increase in viscosity due to the drop in temperature. Lubricating fluids with excessively high viscosity not only reduce their lubrication effectiveness and increase friction during the rotation of the main shaft 15, but may also cause increased wear on the bearing 6 and main shaft 15, thereby shortening the service life of the entire wind turbine. The provision of a heating mechanism not only improves the operating efficiency and service life of the wind turbine in low-temperature environments, but also effectively ensures its stable operation in high-temperature environments. Although the heating mechanism was originally designed for low-temperature environments, in actual application, it can also help improve the operational stability of the wind turbine in high-temperature environments to a certain extent. For example, in extremely high-temperature conditions, by appropriately reducing the heating power of the heating mechanism or completely shutting it off, the lubricating fluid can be prevented from deteriorating or degrading due to overheating.

[0036] In some embodiments, reference Figure 4 、 Figure 5 The heating mechanism includes a heating component 13 and a power supply component. The heating component 13 is connected to the power supply component. A cavity is provided in the bearing 6. A partition 601 is provided in the cavity. The partition 601 divides the cavity into a first chamber and a second chamber. The heating component 13 is provided in the first chamber. The spindle 15 passes through the second chamber. The lubricating fluid is provided in the second chamber. The heating component 13 can be made of a resistance wire or other heating material. The heating component 13 is installed in the first chamber of the bearing 6. The heating component 13 is connected to the power supply component to form an electromagnetic heating structure, thereby heating the lubricating fluid in the second chamber. The partition 601 divides the cavity into two independent chambers: a first chamber and a second chamber. This separation design enables the heating component 13 and the lubricating fluid to be located in different chambers, thereby avoiding direct heat exchange interference and ensuring that the lubricating fluid can be effectively heated.

[0037] In some embodiments, a rotating assembly 12 is provided in the second chamber. The rotating assembly 12 contacts the main shaft 15 and is rotationally connected to the inner side of the second chamber. The rotation axis of the rotating assembly 12 is parallel to the axis of the main shaft 15. The main purpose of the rotating assembly 12 is to more effectively disperse and transfer the heat generated by the main shaft 15 during rotation through its direct contact with the main shaft 15 and its rotational connection in the second chamber. At the same time, the rotating assembly 12 can also help to more evenly apply the lubricating oil in the second chamber to the main shaft 15, thereby ensuring that the main shaft 15 is fully lubricated and reducing friction and wear. The direct contact between the rotating assembly 12 and the main shaft 15 means that the gap between them is very small, which can ensure the effective transfer of lubricating oil between the two. This direct contact also helps to improve the efficiency of heat conduction, so that the heat on the main shaft 15 can be transferred to other parts of the bearing 6 more quickly through the rotating assembly 12 and the lubricating oil, and then dissipated through the heat dissipation structure. The axis of rotation of the rotating assembly 12 is parallel to the axis of the main shaft 15. This ensures that the rotating assembly 12 rotates synchronously with the main shaft 15 without generating any additional lateral forces. This parallelism also helps maintain the stability of the main shaft 15 during rotation, reducing wear and failure caused by vibration or imbalance. This design not only helps reduce friction and wear, but also improves heat transfer efficiency, thereby extending the service life of the wind turbine.

[0038] In some embodiments, multiple rotating assemblies 12 are arranged in a circular array around the axis of the main shaft 15. By distributing multiple rotating assemblies 12 in a circular array, the main shaft 15 is ensured to be in full contact with the lubricant in all directions, thereby improving lubrication. This distribution ensures effective lubrication of all parts of the main shaft during rotation, reducing wear and friction caused by uneven lubrication. The even distribution of multiple rotating assemblies 12 helps balance the forces acting on the main shaft 15 during rotation, thereby enhancing its stability. This helps reduce equipment failures caused by vibration or shaking of the main shaft 15 and improves the overall operational reliability of the wind turbine. The circumferential array of rotating assemblies 12 also helps optimize heat dissipation. As the main shaft 15 rotates, the lubricant moves with the rotating assemblies, creating a certain flow. This helps to promptly dissipate the generated heat, preventing heat accumulation and overheating. This distribution also helps to increase the heat dissipation surface area, further improving heat dissipation efficiency. Because the circumferential array distribution of the rotating components 12 provides more uniform lubrication and heat dissipation, the service life of the main shaft and related components can be extended, and equipment failures and maintenance costs caused by wear, overheating, etc. can be reduced. This helps to improve the overall durability and cost-effectiveness of the wind turbine.

[0039] In some embodiments, reference Figure 6A conduit 14 is provided on the bearing 6. The lower end of the conduit 14 is connected to the second chamber, and the upper end of the conduit 14 passes through the cabin 1. The upper end of the conduit 14 is provided with an end cover. Through the conduit 14, the lubricating fluid in the bearing can be easily replenished or replaced. When the lubricating fluid is reduced or deteriorated due to use, the operator does not need to disassemble the entire bearing or related components. He only needs to open the end cover and add new lubricating fluid to the bearing through the conduit 14, thereby simplifying the maintenance process and reducing maintenance costs. Timely replenishment or replacement of lubricating fluid is crucial to maintaining the good operating condition of the bearing. The provision of the conduit 14 can ensure that the bearing is always adequately lubricated, reducing wear and failures caused by insufficient lubrication, thereby improving the reliability and service life of the entire fan. During the bearing maintenance process, interference and potential damage to other key components of the fan are avoided. The design of the conduit 14 allows maintenance personnel to replace the lubricating fluid without disassembling the main structure of the fan, reducing the safety risks caused by improper maintenance. An end cap is installed at the upper end of conduit 14. This design ensures that the bearing interior is sealed when not undergoing maintenance, preventing external impurities from entering the bearing and affecting lubrication. The end cap also allows conduit 14 to be quickly opened for maintenance when necessary, demonstrating the design's flexibility and practicality.

[0040] In some embodiments, the support mechanism includes a first support assembly 4 and a second support assembly 5. The upper end of the first support assembly 4 is connected to the nacelle 1, and the lower end of the first support assembly 4 is detachably connected to the second support assembly 5. The detachable connection between the first and second support assemblies 4 and 5 facilitates installation and removal of the wind turbine. This design allows for faster and more convenient maintenance, inspection, or component replacement, reducing maintenance costs and improving work efficiency. The detachable connection allows the wind turbine's support structure to be adjusted to meet specific needs. For example, in different terrains or wind farm environments, the appropriate combination of support assemblies can be selected to ensure the stability and safety of the wind turbine. This flexibility helps improve the adaptability and application range of the wind turbine. Since the support mechanism can be split into two or more parts, the overall structure of the wind turbine is more compact, making it easier to transport and store. During transportation, the size and weight of the wind turbine can be reduced, reducing transportation costs; during storage, it saves space and improves storage efficiency. The detachable support mechanism design helps reduce the manufacturing cost of the wind turbine. Since each support component can be manufactured and processed separately, more flexibility in material selection and manufacturing processes is possible, thereby reducing production costs. At the same time, this design also facilitates modular production of wind turbines, improving production efficiency and quality.

Claims

1. A wind turbine with a temperature-variable structure, characterized in that: include: A nacelle (1), a wheel hub (2), a blade (3), a heat dissipation mechanism and a support mechanism, wherein the nacelle (1) is provided with two layers, the heat dissipation mechanism is provided on the first layer of the nacelle (1), a bearing (6), a speed change assembly (7), a power generation assembly (8) and a main shaft (15) are provided in the second layer of the nacelle (1), the two ends of the main shaft (15) are respectively connected to the wheel hub (2) and the speed change assembly (7), the speed change assembly (7) is connected to the power generation assembly (8), the bearing (6) is provided on the main shaft (15), the blade (3) is installed on the wheel hub (2), and the support mechanism is connected to the nacelle (1); The heat dissipation mechanism is used to perform heat dissipation treatment on the second layer of the cabin (1); and the support mechanism is used to fix and support the cabin (1).

2. The wind turbine with a temperature-variable structure according to claim 1, wherein: The heat dissipation mechanism comprises: a flow guide component (9), a baffle (10) and a heat dissipation component (11); the flow guide component (9) penetrates the first layer surface of the cabin (1); the baffle (10) is a partition between the first layer of the cabin (1) and the second layer of the cabin (1); the heat dissipation component (11) is arranged in the second layer of the cabin (1); the heat dissipation component (11) is connected to the baffle (10); wherein the flow guide component (9) is used to introduce external airflow into the first layer of the cabin (1).

3. The wind turbine with a temperature-variable structure according to claim 2, wherein: The guide assembly (9) is plate-shaped, and there are a plurality of the guide assemblies (9). An air inlet is provided on the cabin (1), and the air inlet is connected to the first layer of the cabin (1). A plurality of the guide assemblies (9) are evenly spaced and arranged at the air inlet.

4. The wind turbine with a temperature-variable structure according to claim 3, wherein: There are a plurality of air inlets, and the plurality of air inlets are arrayed and distributed on the cabin (1).

5. The wind turbine with a temperature-variable structure according to claim 1, wherein: It also includes a heating mechanism, which is arranged on the bearing (6), and a lubricating liquid is provided at the connection portion between the bearing (6) and the main shaft (15); wherein the heating mechanism is used to heat the lubricating liquid.

6. The wind turbine with a temperature-variable structure according to claim 5, characterized in that: The heating mechanism comprises a heating component (13) and a power supply component, the heating component (13) is connected to the power supply component, a cavity is provided in the bearing (6), a partition (601) is provided in the cavity, the partition (601) divides the cavity into a first chamber and a second chamber, the heating component (13) is provided in the first chamber, the main shaft (15) passes through the second chamber, and the lubricating fluid is provided in the second chamber.

7. The wind turbine with a temperature-variable structure according to claim 6, wherein: A rotating assembly (12) is provided in the second chamber, the rotating assembly (12) is in contact with the main shaft (15), the rotating assembly (12) is rotatably connected to the inner side of the second chamber, and the rotation axis of the rotating assembly (12) is parallel to the axis of the main shaft (15).

8. The wind turbine with a temperature-variable structure according to claim 7, characterized in that: There are a plurality of rotating components (12), and the plurality of rotating components (12) are distributed in an array around the axis of the main shaft (15).

9. The wind turbine with a temperature-variable structure according to claim 6, wherein: A conduit (14) is provided on the bearing (6), the lower end of the conduit (14) is communicated with the second chamber, the upper end of the conduit (14) passes through the cabin (1), and the upper end of the conduit (14) is provided with an end cover.

10. The wind turbine with a temperature-variable structure according to any one of claims 1 to 9, characterized in that: The support mechanism comprises a first support assembly (4) and a second support assembly (5), wherein the upper end of the first support assembly (4) is connected to the cabin (1), and the lower end of the first support assembly (4) is detachably connected to the second support assembly (5).

Images