Vertical axis wind power generation device with dynamic visual bird repelling function

Abstract

The invention provides a vertical axis wind power generation device with a dynamic visual bird repelling function, which comprises a tower, a generator and at least three blades, the surface of each blade is provided with a composite spectrum coating, the outer contour of the composite spectrum coating is a wavy or zigzag nonlinear continuous curve, the composite spectrum coating is matched with the nonlinear continuous curve in contour, and the generator is arranged on the tower. When the blade rotates, the reflection direction of the incident light by the surface of the blade is subjected to nonlinear periodic change, so that a dynamic visual bird repelling signal is generated. The related system is provided with a plurality of devices, and the devices are planned and arranged according to the field wind direction and the bird activity path to jointly form a distributed dynamic visual bird repelling network. Compared with a traditional blade, the initial repelling rate of the testing device on the tested bird flock is increased by 40% or above, the habitual period of the birds is prolonged by three times, the purchasing and operation and maintenance cost of traditional bird repelling equipment is saved, and economic benefits and environmental benefits are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generation equipment, in particular to a vertical axis wind power generation device which has the functions of power generation and visual bird repelling by special optical and structural design of the blade to generate dynamic changing light signals when rotating. BACKGROUND

[0002] In areas where birds are active frequently, including ecologically sensitive areas, agricultural production areas, and the periphery of key infrastructure, bird damage prevention is a common and serious challenge. The existing "one-off discussion" and reliance on artificial or simple device superposition bird repelling mode not only has low efficiency and high cost, but also often contradicts the goal of sustainable development, which is manifested in the following multi-dimensional dilemmas: 1. Wind power and green energy industry: In ecologically sensitive areas (such as migratory bird corridors) with abundant wind energy resources, deploying wind farms faces the risk of bird strikes and the hard constraints of project environmental impact assessment. The current common "superposition" mode of additional installation of independent bird repelling devices (such as sound waves, flashing lights, and gas cannons) significantly increases the initial investment, long-term operation and maintenance costs, and system complexity of the project. The standard coating of wind turbine blades is only used for aviation warning and corrosion prevention, and the visual signal formed by its rotation is single, and birds can easily adapt, which cannot form effective protection. This not only restricts the development space of high-quality wind energy resources and the growth of green energy supply, but also puts operators in a dilemma between "increasing revenue" and "environmental protection".

[0003] 2. Agricultural production units: Bird pecking can cause serious yield reduction and quality decline of crops in farmland, orchard, etc. Traditional methods such as manual driving, erecting bird-proof nets, or using chemical repellents have problems such as high labor cost, limited protection range, possible environmental pollution, and harm to beneficial birds. Producers urgently need an automatic, sustainable, and environmentally friendly physical bird repelling method to reduce costs and increase profits.

[0004] 3. Fishery breeding units: Water bird predation is a major source of loss in aquaculture. Currently, it mainly relies on patrolling by attendants, shooting or setting fixed deterrents, which have short-term effects and consume a lot of manpower, and protection is particularly weak at night and in bad weather.

[0005] 4. Key infrastructure such as airports: Bird strikes pose a serious threat to aviation safety. Although various bird repelling methods (such as professional sound and light devices, gas cannons, and falcons) have been applied, the high operating cost, noise nuisance problem, and reliance on professional personnel make it a continuing demand to seek more economical, more autonomous, and all-weather operating supplementary or upgraded technology.

[0006] In summary, the common pain points faced by each of the above fields are that the existing bird repelling solutions are mostly passive responses or high-cost superposition, and there is a lack of a radical solution that can be deeply integrated with site infrastructure or production activities, actively generate long-term deterrence, and itself sustainable operation. The present invention aims to respond to this cross-industry common demand by providing a revolutionary technical path through the native function fusion at the hardware level. SUMMARY

[0007] The present invention aims to overcome the above-mentioned defects and provide an integrated solution. The purpose is to achieve the "one generation of two uses" of infrastructure by synergistically designing the shape and optical level of the blades of the vertical axis wind power generation device, so that it can naturally generate a dynamic and irregular light signal sensitive to bird vision without external additional equipment or additional energy consumption during rotation power generation, thereby actively repelling birds while outputting green power, reducing the risk of collision.

[0008] The device includes a tower, a generator, and at least three blades; the surface of the blade is provided with a composite spectrum coating, and the outer contour is a wavy or jagged non-linear continuous curve; the composite spectrum coating cooperates with the non-linear continuous curve contour, so that the reflection direction of the light incident on the surface of the blade changes nonlinearly and periodically when the blade rotates, thereby generating a dynamic visual bird repelling signal.

[0009] The related system is provided with multiple devices as described above, and each device is arranged according to the wind direction and bird activity path of the site to form a distributed dynamic visual bird repelling network.

[0010] The blades of the vertical axis wind power generation device are made of glass fiber composite material. The contour is designed to be wavy, with an amplitude H of 0.3 meters and a wavelength L of 3.5 meters (H / L ≈ 1:12). The surface of the blade is sprayed by zone: about 60% of the total area is sprayed with "ultraviolet high-reflective white" paint containing nano-titanium dioxide, which has a reflectivity of 85% to 365nm ultraviolet light; the remaining area is sprayed with international orange-red high-visibility paint, which has a reflectivity of 75% to 550nm light. When the blade rotates around the main shaft, the wavy surface and the high-reflective coating work together to reflect the ultraviolet light and visible light in space, forming a light spot that jumps quickly and changes in brightness, constituting a dynamic visual interference to birds.

[0011] To further ensure the effect in low light environment, the blade is designed to be hollow to form a light guide cavity. The inner wall of the cavity is ground to form a diffuse reflection surface and is arranged with a high-brightness LED module. The LED module is controlled by a controller located in the cabin. The controller receives the ambient light sensor signal and automatically turns on the LED at dusk or on cloudy days, and drives it to pulse at a random frequency of 0.5-2Hz, with a color temperature of 3000K to 6000K slowly cycling, simulating the dynamic eye of a living organism.

[0012] In a wind farm located on the migration path of migratory birds, dozens of the devices are arranged. When deployed, the arrangement density is increased in the downwind direction of the dominant wind direction and on both sides of the core channel identified by the bird radar. All devices are connected to the station control center through the LoRa network, and can be started in a coordinated flashing mode in the peak migration season to form a large-scale and dynamic visual barrier, which significantly improves the overall bird repelling effect in the region.

[0013] The application realizes the additional bird repelling function with zero additional energy consumption through original design. The test shows that the initial repelling rate of the test device with the blade of the application to the test bird group is increased by more than 40% than that of the traditional blade, and the bird habituation period is prolonged by 3 times. The scheme not only saves the purchase and operation and maintenance cost of the traditional bird repelling equipment, but also provides an innovative technical access scheme for developing wind power projects in ecologically sensitive areas, which has economic and environmental benefits. DETAILED DESCRIPTION

[0014] 1. Device scheme: a vertical axis wind power device with dynamic visual bird repelling function, comprising a tower, a generator and at least three blades; the surface of the blade is provided with a composite spectrum coating, and the outer contour is a non-linear continuous curve in a wave shape or a zigzag shape; the composite spectrum coating cooperates with the non-linear continuous curve contour, so that the reflection direction of the surface of the blade to the incident light changes nonlinearly and periodically when the blade rotates, thereby generating a dynamic visual bird repelling signal.

[0015] 2. System scheme: a wind farm, characterized in that a plurality of devices as described above are arranged, and each device is arranged according to the wind direction and bird activity path of the site to form a distributed dynamic visual bird repelling network.

[0016] Embodiment one: structure and optical design The blade of the vertical axis wind power device of the application is made of glass fiber composite material. The contour is designed in a wave shape, the wave amplitude H is 0.3 meters, and the wave length L is 3.5 meters (H / L ≈ 1:12). The surface of the blade is sprayed by a partition spraying process: about 60% of the total area is sprayed with "ultraviolet high-reflective white" paint containing nano titanium dioxide, and the reflectivity of 365nm ultraviolet light reaches 85%; the remaining area is sprayed with international orange red high visible light paint, and the reflectivity of 550nm light reaches 75%. When the blade rotates around the main shaft, the wave surface and the high-reflective coating work together to reflect the ultraviolet light and visible light in space to form a light spot with rapid jumping and brightness change, which constitutes a dynamic visual interference to birds.

[0017] Embodiment two: internal light source enhancement design To further ensure the effect in low light environment, the blade adopts hollow design to form a light guide cavity. The inner wall of the cavity is frosted to form a diffuse reflection surface, and is arranged with a high-brightness LED module. The LED module is controlled by a controller located in the cabin. The controller receives the ambient light sensor signal, automatically turns on the LED in the twilight or overcast day, and drives it to pulse at a random frequency of 0.5-2Hz, with a color temperature slowly cycling between 3000K and 6000K, simulating the dynamic eye light of a living organism.

[0018] Example Three: Wind Farm Deployment Application In a wind farm located on the migration path of migratory birds, dozens of the devices are arranged. When deployed, the arrangement density is increased in the downwind direction of the dominant wind direction and on both sides of the core channel identified by the bird radar. All devices are connected to the station control center through the LoRa network, and can be started in a coordinated flashing mode in the peak migration season to form a large-scale and dynamic visual barrier, significantly improving the overall bird repelling effect of the region.

Claims

1. A vertical axis wind power generation device with dynamic visual bird deterrence function, comprising a tower, a generator, and at least three blades, characterized in that: The surface of the blade is provided with a composite spectral coating; the composite spectral coating includes a first coating region with a reflectivity of more than 80% for ultraviolet light in the 300-400nm band, and a second coating region with a reflectivity of more than 70% for visible light in the 550nm band. The outer contour of the blade is a non-linear continuous curve, either wavy or serrated. The composite spectral coating, in conjunction with the nonlinear continuous curve profile, causes the direction of reflection of incident light on the blade's surface to change nonlinearly and periodically when the blade rotates.

2. The vertical axis wind power generation device according to claim 1, characterized in that, The blade has a light guide cavity extending along its span, and a light source module is installed inside the light guide cavity. The area on the blade surface corresponding to the light guide cavity is made of a light-transmitting or semi-light-transmitting material.

3. The vertical axis wind power generation device according to claim 2, characterized in that, It also includes an ambient light sensor and a controller; the controller is connected to the ambient light sensor and the light source module respectively, and is configured to automatically turn on the light source module when the ambient light illuminance is lower than a set threshold, and control it to work in a changing frequency or brightness mode.

4. The vertical axis wind power generation device according to claim 2 or 3, characterized in that, The inner wall of the light guide cavity is provided with a light diffusion structure, and the light source module is an LED module.

5. The vertical axis wind power generation device according to claim 1, characterized in that, The ratio of the amplitude to the wavelength of the wavy or sawtooth profile is between 1:5 and 1:

15.

6. A wind farm, characterized in that, Multiple vertical axis wind power generation devices with dynamic visual bird deterrence function as described in any one of claims 1 to 5 are deployed; the multiple devices are planned and deployed according to the prevailing wind direction and main bird activity paths in the area.

7. The wind farm according to claim 6, characterized in that, The power generation devices in the wind farm are interconnected through communication modules and can receive control commands to synchronously or in a specific sequence change the working mode of their light source modules.