A positive and negative bidirectional counter-rotating intelligent control superimposable wind power tower based on the principle of self-adaptive drag reduction and steering of a wind sail
By utilizing the principle of wind-catching sails and the long lever structure of bidirectional rotating intelligent control superimposed wind turbine towers, the problems of insufficient wind direction adaptability and structural wind resistance of traditional wind turbine units have been solved, achieving efficient and stable wind energy utilization and flexible application scenario adaptation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-15
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional horizontal axis wind turbines have limited wind direction adaptability and are difficult to start in low wind speed environments. Vertical axis wind turbines have high reverse wind resistance and severe power loss, thin structure and weak wind resistance, high manufacturing cost and are difficult to produce in a standardized manner, and cannot flexibly adapt to the needs of different scenarios.
The wind turbine tower, designed based on the principle of wind-catching sails, features a forward and reverse bidirectional reversible intelligent control system. Combining large blades and movable small blades, it achieves all-round wind capture and reduces adverse wind resistance. It uses a long lever structure to amplify torque, and the whole machine adopts a cage frame structure to enhance rigidity. It is equipped with a step-by-step power generation and blade locking control system to achieve efficient power generation across the entire wind speed range.
It improves wind energy utilization efficiency, enhances wind resistance, reduces internal power consumption, supports mass production and flexible adaptation to different scenario needs, extends equipment life, and improves power generation efficiency and stability.
Smart Images
Figure CN122429040A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wind power generation new energy technology, and in particular to a superimposed wind turbine tower with adaptive drag reduction and direction adjustment based on the principle of wind-blown sails and bidirectional reversible rotation. Background Technology
[0002] Traditional horizontal axis wind turbines rely on lift-type blades for power generation and require a yaw mechanism, limiting their adaptability to different wind directions and making them difficult to start and operate in low wind speed environments. Conventional vertical axis wind turbines generally suffer from excessive drag in the opposite direction, with opposing torques canceling each other out, resulting in significant internal power losses and hindering the improvement of wind energy utilization efficiency.
[0003] Most existing wind power equipment adopts a single-column cantilever structure, which is thin and has a high center of gravity. It is weak in resisting wind pressure and typhoons. When encountering strong winds and gales, it can only be mechanically stopped to avoid danger, and a large amount of wind energy resources are forced to be wasted.
[0004] Meanwhile, traditional wind power equipment has a high degree of structural customization, lacks unified standards for components, cannot be mass-produced using templates, has complex assembly, high manufacturing costs, and is inconvenient for later maintenance and replacement; the equipment has a single form and cannot flexibly switch between small, medium and large application scenarios, which limits the industry's promotion and large-scale implementation.
[0005] To address this, a superimposed wind turbine tower with adaptive drag reduction and direction adjustment based on the principle of wind turbine sails is proposed, featuring bidirectional and reverse-rotating intelligent control. Summary of the Invention
[0006] In view of this, the present invention provides a superimposed wind turbine tower with adaptive drag reduction and direction adjustment based on the principle of wind-blown sails, so as to solve or alleviate one of the technical problems existing in the prior art, and at least provide a beneficial option.
[0007] The technical solution of this invention is implemented as follows: a superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of sail catching wind. It adopts the principle of sail catching wind as the basic working principle, without the need to set up a yaw wind-catching structure, and realizes all-round wind capture without dead angles. It can adapt to complex wind field environments such as variable wind direction, turbulent areas, mountain valleys, and coastal storm areas.
[0008] This invention employs a combination structure of large blades and movable small blades. In the downwind region, the blades are normally closed to form a complete and continuous wind-receiving surface, concentrating wind power to continuously perform work. In the upwind region, the movable blades autonomously deflect and open, aligning with the wind direction to minimize adverse wind resistance and eliminate reverse torque cancellation, thereby reducing power consumption at its source.
[0009] This invention uses a long lever arm as the core mechanical support, with the wind turbine using the central rotation axis as the unified fulcrum. The blades extend outward to form a large-span lever arm structure. The wind force acts on the far end of the blades, and the output torque is amplified by lever mechanics, giving it excellent start-up capability in light winds and continuous power output capability.
[0010] The entire unit adopts a cage-like enclosed load-bearing frame, with layers rigidly connected to the reinforcement structure through flanges. After multiple layers are stacked, an integrated structure is formed. The entire tower is like a high-rise building rigid system, which can bear the lateral strong wind load in a balanced manner. It has a stable center of gravity and high overall rigidity, naturally resisting typhoons and extreme storms. It does not need to be stopped and locked under severe weather conditions.
[0011] This invention establishes two mutually cooperating, tiered wind energy utilization systems: The first system is a hierarchical power generation system. Each layer is equipped with multiple independent power generation units. The control system gradually puts the power generation modules into operation from weak to strong according to the real-time wind speed, gradually increasing the output load until the whole machine is running at full load and stable. The wind energy is matched reasonably, avoiding power idleness and load imbalance. The second system is a step-by-step blade locking system for strong winds. When the wind force exceeds the normal operating range, the blades are locked and shaped synchronously from the outside to the inside, which can reasonably adjust the effective wind-receiving area and dynamically balance the operating speed. In strong wind conditions, the system does not abandon wind or stop the machine, and maintains continuous power generation.
[0012] Two sets of hierarchical control mechanisms work together to achieve precise utilization of all wind speeds, including light winds and light loads, stable winds and stable pressures.
[0013] Under extreme wind conditions, all blades of the entire machine are locked and fixed synchronously across the entire area. The wind-receiving structures on both sides of the wind turbine are completely symmetrical, and the forward thrust and reverse wind pressure are balanced with each other. Passive self-balancing is achieved by relying on aerodynamics, without mechanical impact or structural overload, thus achieving pure physical safety protection.
[0014] The adjacent wind turbines are arranged in opposite directions to cancel each other out gyroscopic torque and operating vibration, making the whole machine run more smoothly. At the same time, it achieves multi-layer power torque superposition, which greatly increases the power generation capacity under the same land area.
[0015] The entire assembly components are standardized and templated, and the same model of wind turbine components, frame components, and blade assemblies are completely interchangeable, enabling mass production on industrial assembly lines. On-site assembly is simple, manufacturing costs are controllable, and subsequent component inspection, replacement, and maintenance are convenient, making it suitable for large-scale industrial replication and promotion.
[0016] This invention is adaptable to various forms. It can be used to manufacture single-layer small units for household power supply, field operations, remote villages, and off-grid power supply on islands. It can also be stacked and combined in multiple layers according to site requirements to meet the commercial power generation needs of factories, industrial parks, and towns. Alternatively, it can be enlarged in terms of overall structural specifications to build large-scale landmark wind turbine towers for application in large-scale grid-connected wind farms, achieving multi-scenario, full-size, and full-coverage applications.
[0017] The cage frame as a whole bears the lateral wind pressure and the weight of the equipment. The central rotating shaft is only responsible for transmitting torque and does not bear the combined loads of bending and torsion, so the structure is not prone to fatigue damage. Each layer is equipped with a rolling friction-reducing support structure to reduce the friction loss of the large wind turbine rotation and lower energy consumption in long-term operation.
[0018] The entire braking system is used solely for equipment maintenance and safety locking. It remains disconnected and does not engage during normal power generation, resulting in no friction or wear and extending the overall service life of the unit. The unit can be flexibly adapted to various energy storage systems to achieve energy storage, peak shaving and valley filling, and stable grid-connected output.
[0019] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions: 1. This invention abandons the traditional lift power generation mode and adopts a long lever torque-increasing structure with the front thrust of the sail, which completely solves the problem of reverse power cancellation, greatly improves the driving torque, has excellent start-up performance in light winds, and the overall power generation efficiency far exceeds that of existing wind power technology.
[0020] 2. The unique tailwind-adaptive resistance-reducing structure reduces reverse wind resistance in principle, significantly optimizes wind energy utilization efficiency, and eliminates the long-standing industry shortcoming of vertical axis fans.
[0021] 3. It adopts a dual collaborative mode of step-by-step power generation load input and step-by-step wind blade locking, which can adapt to all wind conditions, fully tap wind energy, and have strong continuous power generation capabilities.
[0022] 4. The building-level integrated cage-type rigid frame has a balanced overall stress distribution, outstanding wind pressure resistance and typhoon resistance performance, and does not require shutdown for disaster avoidance in extreme weather, resulting in higher equipment operation stability.
[0023] 5. The upper and lower impellers are designed to rotate in opposite directions, effectively offsetting vibration and torque, with multi-layer torque superposition for enhanced efficiency, high space utilization, and low operating noise.
[0024] 6. The entire equipment is designed with modular and standardized components, and the parts are interchangeable, enabling mass industrial production. It is easy to assemble, has a lower cost, is convenient to maintain, and can be quickly industrialized.
[0025] 7. One unit with multiple forms, it can freely switch between single-layer small, multi-layer stacked and large wind farm modes, and is suitable for all scenarios such as civil use, commercial use and centralized grid connection, with extremely strong market extensibility.
[0026] 8. The overall structure is reasonably designed, the shaft is subjected to a single force, friction loss is small, equipment failure rate is low, and service life is long; the overall technology is highly original, with strong barriers to entry, and has the potential for large-scale industrialization and trillion-level new energy applications.
[0027] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a structural diagram of a single-stage wind turbine of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a structural diagram of the three-stage wind turbine of the present invention.
[0030] Reference numerals: 1. Cage-type building-grade load-bearing frame; 2. Long lever wind turbine module; 3. Adaptive opening and closing blade system; 4. Annular friction-reducing support mechanism; 5. Strong wind step-by-step blade locking control mechanism; 6. Layered step-by-step power generation system. Detailed Implementation
[0031] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0032] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0033] Example 1
[0034] like Figures 1-2 As shown, this embodiment of the invention provides a superimposed wind turbine tower with adaptive drag reduction and direction adjustment based on the principle of wind turbine wind catching, which includes a cage-type building-level load-bearing frame 1, a long lever wind turbine module 2, an adaptive opening and closing blade system 3, an annular friction reduction support mechanism 4, and a strong wind step-by-step blade locking control mechanism 5.
[0035] The cage-type building-grade load-bearing frame 1 is composed of a central column and multiple outer load-bearing columns. High-strength connectors are used to lock and fix the layers together. After multiple layers are stacked, an overall rigid load-bearing structure is formed, which has the overall force resistance to typhoons and extreme strong winds. The outer side of the frame is equipped with airflow guiding components to directionally gather airflow and improve the wind capture effect throughout the entire area.
[0036] The wind turbine has a symmetrical arrangement of combined blades in a ring. Relying on an adaptive movable structure, it can close to catch the wind when it is in the downwind and open to reduce drag when it is in the upwind. The wind turbine has a long lever structure with the central shaft as the fulcrum, which amplifies the wind driving torque and ensures a smooth start-up at low wind speeds.
[0037] Multiple independent power generation units are evenly distributed on each floor to form a hierarchical power generation system. The controller collects wind speed data in real time and gradually puts the working units into operation as the wind force changes, smoothly transitioning to full-load operation.
[0038] Under strong wind conditions, the blade locking control mechanism locks the blades synchronously from the outside to the inside, adjusting the wind-receiving area and balancing the operating speed to ensure continuous power generation in strong winds; in extreme gale conditions, the blades across the entire area are uniformly locked and shaped, ensuring symmetrical wind receptivity and passive protection through aerodynamics.
[0039] The upper and lower adjacent wind turbines are arranged to rotate in opposite directions, which cancels out the operating vibrations and superimposes the output torque of multiple layers; the outer edge of the wind turbine is equipped with a rolling support structure to reduce rotational friction resistance and make the operation smoother.
[0040] All wind turbines, frames, blades, and connecting components adopt standardized template designs of the same specifications. Components of the same model are interchangeable, supporting mass production on assembly lines, rapid on-site assembly, and easy maintenance and replacement later.
[0041] The equipment is flexible in its application. A single-layer layout can be used as a small, lightweight unit, suitable for distributed off-grid power supply. Multi-layer stacked combinations can be used as medium-sized standardized equipment to meet the normalized power generation needs of industrial and commercial enterprises. The overall enlarged structure can be built into a large-scale wind power complex and connected to the grid for centralized power generation.
[0042] The entire braking system is only used during equipment maintenance and shutdown, and is completely isolated during normal power generation. The entire unit has a reserved energy storage docking port, which can be used with energy storage equipment to achieve stable energy storage and output.
[0043] In this embodiment, the equipment also includes a dedicated braking unit for maintenance and an energy storage adapter interface. The entire braking component is only used for equipment maintenance and safety locking. During normal power generation, it is completely disconnected and does not intervene, resulting in no friction or wear and extending the service life of the entire unit. The entire unit can be flexibly adapted to various energy storage systems to achieve energy storage, peak shaving and valley filling, and stable grid-connected output.
[0044] Example 2
[0045] This embodiment compares the power generation performance of the wind turbine tower of the present invention with that of a traditional horizontal axis wind turbine, under the premise of the same wind speed and the same wind-receiving projected area.
[0046] Selecting a traditional horizontal-axis three-bladed wind turbine with a rotor diameter of 75 meters, its swept area is approximately:
[0047] This embodiment adopts a three-layer stacked wind turbine structure with alternating forward and reverse rotation, and the wind-receiving projected area of a single layer is designed to be 5625m². 2 The total wind-receiving area of the three floors is exactly equal to the swept area of a traditional 75-meter wind turbine, which is 17,671 m². 2 This achieves complete equivalence of wind-receiving areas.
[0048] Assume consistent environmental conditions: wind speed v = 7 m / s, air density ρ = 1.225 kg / m³ 3 .
[0049] Basis for determining the wind energy utilization coefficient: For traditional horizontal axis fans, considering yaw error, blade lift loss and drag loss during actual operation, Cp=0.22 is taken; This invention is based on the principle of wind-blown sails. In the downwind region, the blades close to form a rigid thrust surface, while in the upwind region, the blades open adaptively to reduce drag and effectively eliminate reverse torque. Cp = 0.62 is used.
[0050] Instantaneous power generation calculation formula:
[0051] Instantaneous power of traditional fans:
[0052] Instantaneous power of the three-layer stacked wind turbine tower of this invention:
[0053] Further considering the effective power generation time throughout the year: Traditional large horizontal axis wind turbines cannot start when the wind speed is lower than the cut-in wind speed (usually 3~4 m / s), and need to be shut down for protection when the wind speed is higher than the cut-out wind speed (about 25 m / s). In addition, there is power limitation operation in high wind speed sections, and its annual effective utilization time accounts for about 42%. The present invention adopts a micro-wind start-up design, combined with a strong wind step-by-step blade locking control mechanism, which can generate electricity continuously without stopping under wind conditions of level 10~12. Only in extreme wind conditions is the entire domain locked self-balancing protection, and the annual effective utilization time can reach 88%.
[0054] In summary, under fair comparison conditions of the same wind speed and the same wind-receiving projected area, the instantaneous power generation of the three-layer forward and reverse-rotating superimposed wind turbine tower of this invention is approximately 2.82 times that of a traditional 75-meter horizontal axis wind turbine; combined with the advantage of continuous power generation under all wind conditions, the total annual power generation can reach nearly 6 times that of a traditional wind turbine. The core mechanism lies in the fact that traditional equipment relies on inefficient lift-type blades and suffers from reverse drag internal losses, while this invention adopts a structural principle of rigid thrust work and zero-resistance unloading in the headwind, achieving a generational improvement in energy conversion efficiency.
[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind-blown sails, characterized in that: Includes a cage-type building-grade load-bearing frame (1), a long lever wind turbine module (2), an adaptive opening and closing blade system (3), an annular friction-reducing support mechanism (4), and a strong wind step-by-step blade locking control mechanism (5). The cage-type building-level load-bearing frame (1) is rigidly connected in multiple layers to form an integrated and stable load-bearing structure, which can bear the lateral loads of strong winds and typhoons. The long lever wind turbine module (2) is equipped with an adaptive opening and closing blade system (3), which normally closes to catch the wind in the downwind area and automatically opens to reduce drag in the upwind area; The wind turbine forms a long lever wind turbine module (2) with the central rotating shaft as the fulcrum, which amplifies the wind power driving torque; Each floor is equipped with multiple independent power generation units to form a hierarchical power generation system (6), which can gradually increase the load according to the wind strength and smoothly reach full load power generation. The strong wind step-by-step blade locking control mechanism (5) can lock the blades step by step, dynamically balance the rotation speed, and generate electricity continuously without stopping in a strong wind environment. The adjacent wind turbines adopt a bidirectional counter-rotation structure to counteract operating vibrations and superimpose dynamic torque.
2. The superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, is characterized in that: The adaptive opening and closing blade system (3) can adaptively switch between opening, closing and locking modes according to wind direction and wind force.
3. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, is characterized in that: The hierarchical power generation system and the strong wind hierarchical leaf lock control mechanism (5) work together to achieve efficient utilization of wind energy in a stepped manner across the entire wind speed range.
4. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, characterized in that: The cage-type building-level load-bearing frame (1) is subjected to overall stress, has strong structural rigidity, and has excellent wind pressure resistance and typhoon resistance capabilities.
5. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, characterized in that: The outer side of the frame is equipped with a flow guide structure to gather and guide airflow, thereby improving the all-around wind capture effect.
6. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, characterized in that: The entire machine uses standardized template design for the same model of wind turbine and structural components, and the parts are interchangeable, which can realize industrialized mass production and rapid assembly; The entire unit can be deployed independently in a single layer, or stacked in multiple modular layers, or built on a large scale, adapting to various power generation scenarios.
7. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, characterized in that: Under extreme wind conditions, all blades lock synchronously, the wind-receiving structure is symmetrical, and self-balancing protection is achieved by relying on aerodynamics.
8. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, characterized in that: Standardized, template-based component design facilitates mass production, on-site assembly, and subsequent maintenance and replacement of parts.
9. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, characterized in that: The equipment can be used in multiple modes, including small-scale off-grid, medium-scale commercial, and large-scale grid-connected applications, and is suitable for a wide range of scenarios.
10. A superimposed wind turbine tower with adaptive drag reduction and directional adjustment based on the principle of wind turbine sails, as described in claim 1, characterized in that: The unit can be matched with various energy storage devices to achieve stable energy storage and continuous output.