Fan base fixing device based on Venturi effect and wind driven generator
Through the Venturi effect fan base fixing device, the design of the pressure-weight module and the Venturi channel solves the problem of fixing wind turbines on terrain such as the Antarctic ice cap, and improves stability and adaptability, which is suitable for extreme environments.
Patent Information
- Application Number
- CN202411678129.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-01-07
AI Technical Summary
Existing wind turbines are difficult to fix on terrain that cannot be drilled, such as the Antarctic ice sheet, resulting in insufficient equipment stability and adaptability and the inability to effectively utilize the abundant wind resources.
Using a fan base fixing device based on the Venturi effect, the Venturi channel formed by the pressure-weight module, the Venturi base plate and the deflector is combined with the anchoring device and flexible high friction resistance material to achieve stable fixation without drilling, and enhance the equipment. Long-term reliability and adaptability.
It realizes the stable fixation and long-term reliability of wind turbines in extreme environments, avoids environmental damage, is suitable for geographical conditions that cannot be drilled, and improves the adaptability and service life of the equipment.
Smart Images
Figure CN119267098A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of wind power generation, and specifically relates to a wind turbine fixing device for terrain where drilling is not possible, such as the Antarctic ice sheet, and in particular to a wind turbine base fixing device and a wind turbine based on the Venturi effect. Background Art
[0002] The earth has abundant wind resources. Under the current situation of global warming, wind energy, as a clean and renewable energy, has attracted more and more attention for wind power generation. How to use these resources efficiently and economically still faces some technical and cost challenges. The main factors are the differences in wind energy distribution in different regions, changes in climate conditions, and instability of wind speed, which require wind power generation equipment to have stronger adaptability and flexibility. Therefore, it is very necessary to innovate the design of wind power generation equipment.
[0003] Antarctica is the continent with the strongest wind power and is known as the windiest continent in the world. According to statistics, 98% of the wind speeds throughout the year are very suitable for wind turbines. Due to its rich wind resources, research on installing wind turbines in Antarctica has great potential and can effectively supply energy.
[0004] Wind turbines in the prior art are mostly used in conventional terrains, and the most common installation method is screw pile fixation, which requires drilling holes in the ground to achieve fixation. However, on the Antarctic polar ice sheet, due to limited tools and the ice sheet being frozen all year round, it is impossible to drill holes on the hard ice sheet, so a new wind turbine fixing device and wind turbine are needed. Summary of the invention
[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a wind turbine fixing device and a wind turbine based on the Venturi effect. The device, through innovative design, utilizes the Venturi effect, and achieves stable fixing of the wind turbine without drilling holes or any destructive operations on the ground, and improves the long-term reliability and adaptability of the equipment, and is particularly suitable for wind power generation systems in polar ice caps and other special geographical environments.
[0006] To solve the above technical problems, the present invention adopts the following technical solutions: a fan base fixing device based on the Venturi effect, comprising a fixed base, a fixed main shaft is arranged on the fixed base, a weight module is arranged on the upper part of the fixed base, and evenly spaced anchor hooks are arranged on the fixed base, and the lower part of the fixed base is connected to the ground through supporting feet, and a Venturi bottom plate is arranged between two adjacent supporting feet, and the Venturi bottom plate is horizontally arranged below the fixed base, and the height of the Venturi bottom plate from the ground gradually decreases from the outer edge of the fixed base to the middle of the fixed base, and vertical downward guide plates are arranged at intervals on the Venturi bottom plate, so that a Venturi channel gradually shrinking toward the middle of the fixed base is formed between adjacent guide plates, Venturi bottom plates and the ground; anchoring devices are evenly spaced on the fixed main shaft, and the anchoring devices are connected to the fixed base through anchoring hooks.
[0007] Preferably, the ballast module is fixed to the upper surface of the fixed base via a partition.
[0008] Preferably, weight modules are symmetrically and evenly arranged on the fixed base.
[0009] Preferably, three guide plates are arranged on the Venturi bottom plate; more preferably, the bottom surface of the fixed base is square, and a Venturi bottom plate and a guide plate are arranged on each side of the fixed base, and the Venturi bottom plates on opposite sides of the fixed base are connected to each other and the positions of the guide plates correspond.
[0010] Preferably, a connection pad made of a flexible high-friction material is provided under the support foot. More preferably, a reinforcement plate is provided on the support foot.
[0011] Preferably, the weight-bearing module is arranged on the outer side of the upper part of the fixed base, and the angles between two adjacent weight-bearing modules are equal.
[0012] Preferably, the anchoring hook is connected to the fixing base in a threaded manner via an upwardly protruding fixing boss.
[0013] Based on the fixing device, the present invention further provides a wind turbine generator, which, in addition to the above-mentioned fixed base and fixed main shaft structure, further comprises fan blades, and the fan blades are arranged on the fixed main shaft.
[0014] The beneficial effects of the present invention are as follows: the fixing device and the wind turbine using the fixing device do not need to drill holes in the ground or perform other destructive operations, thus avoiding interference with the environment; through reasonable design and application of knowledge of fluid mechanics, the design of the fixing device is combined with the Venturi effect to ensure the stability and long-term reliability of the wind turbine in extreme environments, and is particularly suitable for polar environments or other special geographical conditions where drilling is not possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the wind turbine in the present invention; Figure 2 It is a front view structural schematic diagram of the fixed base in the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along line AA; Figure 4 It is a schematic diagram of the top view of the fixed base in the present invention; Figure 5 for Figure 4 The schematic diagram of the cross-sectional structure along the BB line; Figure 6 Schematic diagram of the Venturi channel structure formed at the bottom of the fixed base.
[0016] Reference numerals: 1. Fixed base; 2. Fixed main shaft; 3. Fan blades; 4. Anchor device; 41. Anchor hook; 42. Fixed boss; 5. Partition; 51. Fixed groove; 6. Venturi bottom plate; 61. Guide plate; 62. Fixed slide; 63. Inlet section; 64. Throat; 65. Outlet section; 7. Support foot; 71. Reinforcement plate; 72. Connection pad; 8. Ballast module. DETAILED DESCRIPTION
[0017] The present invention will be further described below in conjunction with the accompanying drawings.
[0018] like Figure 1-4 As shown, a fan base fixing device based on the Venturi effect includes a fixed base 1, a fixed main shaft 2 is arranged on the fixed base 1, a weight module 8 is arranged on the upper part of the fixed base 1, and evenly spaced anchor hooks 41 are arranged on the fixed base 1. The lower part of the fixed base 1 is connected to the ground through supporting feet 7, and a Venturi bottom plate 6 is arranged between two adjacent supporting feet 7. The Venturi bottom plate 6 is horizontally arranged below the fixed base 1, and the height of the Venturi bottom plate 6 from the ground gradually decreases from the outer edge of the fixed base 1 to the middle of the fixed base 1. Vertically downward guide plates 61 are arranged at intervals on the Venturi bottom plate 6, so that a Venturi channel gradually shrinking toward the middle of the fixed base 1 is formed between the adjacent guide plates 61, the Venturi bottom plate 6 and the ground; anchoring devices 4 are evenly spaced on the fixed main shaft 2, and the anchoring devices 4 are connected to the fixed base 1 through anchoring hooks 41.
[0019] The fixing device can achieve punch-free fixing in two main ways: on the one hand, the gravity of the weight module 8 on the fixed base 1 is used to increase the deadweight of the fixed base 1, so that the fixed base 1 can be firmly fixed on the ground under the action of gravity; on the other hand, the bottom plate of the fixed base 1 is usually composed of a gradually contracting throat 64 and a gradually expanding outlet by using the Venturi effect. When the fluid passes through the Venturi channel, the flow rate reaches the maximum at the narrowest position in the channel, while the pressure drops to the minimum. Therefore, a pressure difference between the peripheral pressure and the middle pressure of the fixed base 1 is formed, further enhancing the stability of the fixed base 1.
[0020] In order to ensure the stability of the fixed base 1, the ballast module 8, the venturi bottom plate 6, the anchor device 4, etc. need to be evenly and spacedly distributed on the fixed base 1 to ensure that the force is evenly dispersed on the fixed base 1 without force offset. Therefore, on the one hand, we fix the ballast module 8 on the upper surface of the fixed base 1 through the partition 5, and symmetrically and evenly arrange the ballast modules 8 on the fixed base 1. The ballast modules 8 are arranged on the outer side of the upper part of the fixed base 1, and the angles between two adjacent ballast modules 8 are equal; on the other hand, when the bottom surface of the fixed base 1 is a square, we arrange a venturi bottom plate 6 and a guide plate 61 on each side of the fixed base 1, and the venturi bottom plates 6 on the opposite sides of the fixed base 1 are connected to each other, and the guide plates 61 are in corresponding positions. Obviously, the bottom surface of the fixed base 1 can also be a circle, hexagon or other symmetrical shapes, but the arrangement of these components must still ensure the principle of balanced force; finally, evenly spaced anchor hooks 41 are arranged on the fixed base 1 to ensure that the connection between the fixed base 1 and the fixed main shaft 2 is also balanced. In this embodiment, the weight modules 8 and anchor devices 4 are both set to 4, and the angle between two adjacent ones is 90°.
[0021] like Figure 4-5 As shown, the fixed base 1 adopts a flat design, and the whole is a square flat plate structure, and multiple groups of bolt holes are punched on the top, which are used to connect with the fixed main shaft 22, the anchor device 4, the Venturi bottom plate 6, and the support foot 7. In order to facilitate the connection with the partition 5, a fixed groove 51 of a certain depth is dug on the upper surface of the fixed base 1, so that the partition 5 can be directly inserted into the fixed groove 51 to cooperate with each other. A fixed slide 62 is provided on the lower surface of the fixed base 1, and the fixed slide 62 is used to cooperate with the upper side of the Venturi bottom plate 6 and the guide plate 61. Multiple independent weight modules 8 are placed on the partition 5 to ensure that the fixed base 1 has sufficient weight to resist the risk of overturning and sliding caused by wind.
[0022] Regarding the construction of the Venturi channel, Figure 3 and Figure 6As shown. The Venturi effect refers to the phenomenon in fluid mechanics that when a fluid passes through a contracting pipe or channel, the flow velocity increases and the pressure decreases. The Venturi bottom plate 6 is horizontally arranged below the fixed base 1, and the height of the Venturi bottom plate 6 from the ground gradually decreases from the outer edge of the fixed base 1 to the middle of the fixed base 1. The Venturi bottom plates 6 on the opposite sides of the fixed base 1 are connected to each other, and the guide plates 61 are located in corresponding positions. Then, the Venturi bottom plate 6 and the guide plate 61 on one side of the fixed base 1 gradually contract with the ground to form the inlet section 63 of the Venturi channel, and the throat 64 is formed at the position where the distance between the Venturi bottom plate 6 and the ground in the middle of the fixed base 1 is the smallest. The Venturi bottom plate 6 and the guide plate 61 on the other side gradually expand with the ground to form the outlet section 65 of the Venturi channel. Then, the pressure of the wind gradually increases when it enters from the inlet section 63, reaches the maximum pressure at the throat 64, and then is discharged from the outlet section 65. Thus, the fixed base 1 has a high external pressure, a low pressure in the middle, a high pressure in the upper part, and a low pressure in the lower part, so that the fixed base 1 is firmly pressed on the ground, further improving the stability of the fixed base 1. In this embodiment, the inclined surface of the Venturi bottom plate 6 is inclined at 30°, further increasing the upper and lower pressure difference of the fixed base 1 caused by the Venturi effect, and increasing a greater pressure to ensure stability.
[0023] In order to enhance the adaptability of the fixed base 1 to the ground, a connection pad 72 made of a flexible high-friction material is provided under the support foot 7, so that the fixed base 1 can still be in stable contact with the ground even when the terrain is not very flat.
[0024] In order to improve the firmness of the fixed base 1 , a reinforcing plate 71 is provided on the supporting foot 7 . The reinforcing plate 71 is provided on the supporting foot 7 at different angles to improve the supporting strength of the supporting foot 7 .
[0025] In order to facilitate transportation and adjust according to actual conditions, we design the fixed base 1 as a detachable structure. The support foot 7 is connected to the fixed base 1 by bolts; the guide plate 61 is connected by a fixed slide 62 on the fixed base 1, and the fixed slide 62 cooperates with the guide plate 61 to guide the installation of the Venturi bottom plate 6; the partition 5 set under the weight module 8 is connected by a fixed groove 51, which can be adjusted or replaced according to needs to adapt to different usage scenarios or functional requirements, thereby improving the versatility and practicality of the base; the anchor device 4 adopts an adjustable design, such as an adjustable bolt structure, which can adjust its anchoring strength according to the terrain to ensure the structural stability of the wind turbine during long-term operation.
[0026] In this embodiment, three guide plates 61 are provided on the Venturi bottom plate 6 on each side, which can more effectively guide the wind flow into the Venturi channel.
[0027] In this embodiment, the wind turbine fixing device is made of high-strength, corrosion-resistant materials, and can maintain long-term stable operation under extreme weather conditions (such as cold and humid environments), ensuring the reliability of the equipment in special environments such as the polar regions.
[0028] The connection between the fixed base 1 and the fixed main shaft 2 is achieved by bolt connection and the anchor device 4. In this embodiment, it is composed of 4 symmetrically distributed ropes, one end of which is fixed on the fixed main shaft 2, and the other end is connected to the anchor hook 41 on the fixed base 1. A fixed boss 42 is welded on the fixed base 1 at the position of the anchor hook 41. The fixed boss 42 can increase the thread depth of the anchor hook 41 and adjust the tightening force through the thread structure. The anchor device 4 has the function of adjustable length and can adapt to the needs of different terrains. When the wind is too strong, the anchor device 4 can effectively disperse the force on the fixed main shaft 2 to prevent the fixed main shaft 2 from tilting or shifting.
[0029] When the wind speed is low, the weight module 8 is sufficient to maintain the overall stability. When the wind speed increases to a higher level, the anchor device 4 of the fixed base 1 and the weight module 8 work together. At this time, the guide plate 61 guides the surrounding airflow to the Venturi base 6, and the Venturi effect is used to form a larger pressure difference between the upper and lower surfaces of the fixed base 1. A larger wind speed will form a larger pressure difference. The coordinated work of the anchor device 4, the weight module 8 and the Venturi base 6 maintains the overall stability of the system and prevents overturning or slipping caused by strong winds. At the same time, the anchor device 4 effectively reduces the vibration and swing of the fixed main shaft 2 caused by wind force, extending the service life of the equipment.
[0030] On the other hand, the present invention discloses a wind turbine matched with the above-mentioned fixing device, which includes a fixed base 1, a fixed main shaft 2 is arranged on the fixed base 1, and a wind turbine blade 3 is arranged on the fixed main shaft 2. The structures of the fixed base 1 and the fixed main shaft 2 are as above.
[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A fan base fixing device based on the Venturi effect, comprising a fixed base, on which a fixed main shaft is arranged, characterized in that: A weight module is arranged on the upper part of the fixed base, and anchor hooks are arranged at uniform intervals on the fixed base. The lower part of the fixed base is connected to the ground through supporting feet, and a Venturi bottom plate is arranged between two adjacent supporting feet. The Venturi bottom plate is arranged horizontally below the fixed base, and the height of the Venturi bottom plate from the ground gradually decreases from the outer side of the fixed base to the middle of the fixed base. Vertical downward guide plates are arranged at intervals on the Venturi bottom plate, so that a Venturi channel that gradually shrinks toward the middle of the fixed base is formed between the adjacent guide plates, the Venturi bottom plates and the ground. Anchoring devices are evenly spaced on the fixed main shaft, and the anchoring devices are connected to the fixed base through anchoring hooks.
2. The fan base fixing device based on the Venturi effect according to claim 1, characterized in that: The ballast module is fixed on the upper surface of the fixed base through a partition.
3. The fan base fixing device based on the Venturi effect according to claim 2, characterized in that: Ballast modules are symmetrically and evenly arranged on the fixed base.
4. The fan base fixing device based on the Venturi effect according to claim 1, characterized in that: Three guide plates are arranged on the Venturi bottom plate.
5. The fan base fixing device based on the Venturi effect according to claim 4 is characterized in that: The bottom surface of the fixed base is square, and a Venturi base plate and a guide plate are arranged on each side of the fixed base, and the Venturi base plates on opposite sides of the fixed base are connected to each other, and the guide plates are located in corresponding positions.
6. The fan base fixing device based on the Venturi effect according to claim 1, characterized in that: A connection pad made of flexible high-friction material is arranged under the supporting foot.
7. The fan base fixing device based on the Venturi effect according to claim 1, characterized in that: A reinforcement plate is arranged on the supporting foot.
8. The fan base fixing device based on the Venturi effect according to claim 1, characterized in that: The weight-bearing modules are arranged on the outer side of the upper part of the fixed base, and the angles between two adjacent weight-bearing modules are equal.
9. The fan base fixing device based on the Venturi effect according to claim 1, characterized in that: The anchor hook is connected to the fixing base in a threaded connection manner via an upwardly protruding fixing boss.
10. A wind turbine generator using a wind turbine base fixing device based on the Venturi effect as claimed in any one of the above claims, characterized in that: It also includes fan blades, which are arranged on the fixed main shaft.