A wind-inducing and wind-converging cover power generation device

Abstract

This invention relates to the field of wind and solar power generation technology, and provides a wind-inducing and wind-concentrating hood power generation device, including a wind-inducing hood, a wind-concentrating hood, a wind-concentrating channel, a wind-inducing channel, and a wind turbine. A parabolic wind-inducing hood with a short-tube-shaped outlet section is coaxially fitted with a tapered, horn-shaped wind-concentrating hood. The inlet diameter ratio of the wind-concentrating hood and the wind-inducing hood is 1:2 to 1:4, the outlet diameter ratio is 1:1.5 to 1:2, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 1.5:1 to 4:1. The wind-concentrating channel and the wind-inducing channel form a novel non-pressurized, velocity-type wind-concentrating power generation method, achieving efficient wind speed enhancement of the wind turbine and solving the wind concentration problem in wind-concentrating power generation systems. Through the parabolic wind-inducing hood, the axial distance between the inlet and outlet of the wind-concentrating hood does not exceed the axial distance between the inlet and outlet of the wind-inducing hood, integrating solar and wind concentration into the same device, solving the problems of traditional wind-solar hybrid systems, forming an integrated power generation mode, and promoting energy utilization in low-wind-speed areas and combined power generation systems.

Description

Technical Field

[0001] This invention relates to the field of wind and solar power generation equipment technology, and in particular to a wind-inducing and wind-concentrating hood power generation device for improving wind speed and energy efficiency. Background Technology

[0002] Traditional wind turbines heavily rely on incoming wind speed for energy utilization, requiring high starting wind speeds. According to the JB / T 9740-1999 standard for low-speed wind turbines, the starting operating wind speed is 4 m / s, and the rated operating wind speed is 6-9 m / s. This makes traditional wind turbines unsuitable for operation in low-wind-speed environments. Theoretically, wind power generation is proportional to the cube of the wind speed. Wind concentrating technology can effectively increase wind speed in low-wind-speed environments, thereby increasing the generator's output power. Achieving wind concentrating requires the installation of specialized components, such as adding baffles or scaling wind concentrators along the outer edge of the rotor. As a key component of the wind concentrating system, the structure of the wind concentrator has a significant impact on system operation. The wind concentrator structure originated from the nozzle, which has the function of accelerating fluid. However, nozzles are generally long, and direct use of them results in large volume and complex installation. Moreover, the nozzle inlet and outlet are mostly under pressure, while wind power generation operates under flow velocity conditions. In addition, the wind concentrator structure has not changed much over the years, and some adjustments and improvements are arbitrary and lack theoretical basis. They can only be verified through experiments, which is inefficient.

[0003] Existing wind concentrators suffer from complex structures and limited energy application, hindering their further development. Traditional wind-solar hybrid systems, essentially two separate systems for wind and solar power, often increase land costs due to dispersed equipment deployment, resulting in low overall cost-effectiveness and making them difficult to promote in space-constrained areas such as cities and mountainous regions. Therefore, developing integrated systems for efficient energy utilization is an effective means to enhance competitiveness. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned deficiencies in the prior art by providing a wind-inducing and wind-concentrating hood power generation device. Based on the ejector principle, a parabolic wind-inducing hood with a short tube-shaped cup-foot outlet section is coaxially fitted with a tapered, horn-shaped wind-concentrating hood. The inlet diameter ratio of the wind-concentrating hood to the wind-inducing hood is 1:2 to 1:4, and the outlet diameter ratio is 1:1.5 to 1:4. 2. The ratio of the inlet diameter to the axial length of the wind-inducing hood is 1.5:1 to 4:1, constructing the wind-inducing and wind-concentrating hood power generation device into a flow velocity type structure, forming a new type of wind-concentrating power generation method, realizing efficient improvement of wind speed of wind turbine generators, and solving the problem of wind concentration in wind-concentrating power generation systems; moreover, by using a parabolic wind-inducing hood, and ensuring that the axial distance between the inlet and outlet of the wind-concentrating hood does not exceed the axial distance between the inlet and outlet of the wind-inducing hood, the function of concentrating light in the wind-solar combined power generation system can be fully utilized, integrating the light-concentrating and wind-concentrating devices into the same physical space, realizing full utilization of land resources, solving the problems of traditional wind-solar complementary systems, forming an integrated power generation mode, and effectively promoting the utilization rate of wind energy in low wind speed areas and improving the energy supply stability of the combined power generation system.

[0005] To achieve the above objectives, this invention employs a technical solution that combines wind extraction and concentration with solar energy concentration to improve wind speed and energy efficiency:

[0006] A wind-inducing and wind-concentrating hood power generation device, characterized in that it includes a wind-inducing hood, a wind-concentrating hood, a flow channel, and a wind turbine generator. The wind-inducing hood includes a large-end inlet, a small-end outlet, and a parabolic surface. The large-end inlet section is concave into an arc-shaped curved surface, and the small-end outlet section is shaped like a short tube bowl. The parabolic surface connects the large-end inlet and the small-end outlet, serving to induce and concentrate wind and concentrate light. The wind-concentrating hood is a tapered horn shape with openings at both ends, coaxially fitted with the wind-inducing hood, serving to concentrate wind. The inlet diameter ratio of the wind-concentrating hood to the wind-inducing hood is 1:2 to 1. 4. The ratio of the outlet diameter of the wind-gathering hood and the wind-guiding hood is 1:1.5 to 1:2, and the ratio of the inlet diameter to the axial length of the wind-guiding hood is 1.5:1 to 4:1. The flow channel includes a wind-gathering flow channel and a wind-guiding flow channel. The wind-gathering flow channel is formed by the inner surface of the wind-gathering hood and its axial channel, and the wind-guiding flow channel is formed by the annular channel formed by the outer surface of the wind-gathering hood and the inner surface of the wind-guiding hood, which is used to form a non-pressurized flow velocity type. The wind turbine is installed at the air outlet of the wind-gathering flow channel and the wind-guiding flow channel.

[0007] In addition, the present invention also provides the following technical solutions:

[0008] The axial distance between the inlet and outlet of the wind-gathering hood does not exceed the axial distance between the inlet and outlet of the air-guiding hood.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] 1. The wind-induced and wind-concentrating hood power generation device does not rely on baffles to reduce fluid outlet pressure in the traditional way, thus avoiding the vortex effect problem of baffles. It effectively increases wind speed through wind-induced and wind-concentrating technology, enabling wind turbines to start and operate at lower wind speeds and improving wind power output.

[0011] 2. The wind-gathering shroud has a tapered horn shape, which does not follow the scaling form of traditional jets. This ensures that the airflow velocity after the wind turbine gathers the wind is still below the supersonic speed, thus ensuring the stable and efficient operation of the wind turbine.

[0012] 3. Based on the ejector, the diffuser component is removed, and the flow channel of the wind-induced draft and wind-concentrating hood power generation device is constructed as a flow velocity type that does not require pressurization, which simplifies the structure. Compared with traditional power generation devices, in low wind speed environments, the wind-induced draft and wind-concentrating hood power generation device can increase the wind speed by 35%-80%, which fully improves the performance of wind turbines in flow velocity environments.

[0013] 4. The parabolic surface connecting the large end inlet and the small end outlet in the wind hood can not only draw in and concentrate wind, but also concentrate sunlight, which can be used for solar power generation. The overall cost performance of the device is very high.

[0014] 5. The axial distance between the inlet and outlet of the wind concentrator does not exceed the axial distance between the inlet and outlet of the wind duct. When the wind duct is used for concentrating sunlight, the wind concentrator should not block the convergence of sunlight as much as possible, making full use of the wind duct to collect solar energy and improve the energy utilization rate of the system. In addition, the wind turbine is arranged at the outlet of the wind concentrator and the wind duct. This can not only make great use of the wind energy after wind concentrating, but also integrate wind and solar power generation system, instead of the traditional combination of two wind power and photovoltaic systems, thus solving the problems of traditional wind and solar complementary systems. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a wind-inducing and wind-concentrating hood power generation device according to the present invention.

[0016] Figure 2 This is a schematic diagram of the air-gathering channel and the air-expelling channel of the present invention.

[0017] Figure 3 This is the present invention. Figure 1 A magnified view of the middle section of the right view.

[0018] Explanation of the labels in the diagram: 1-Inducing hood, 2-Wind concentrator hood, 3-Wind turbine, 4-Solar concentrator module, 1-1 Inducing airflow channel, 2-1 Wind concentrator channel, 1-2 Inlet of the large end of the induced air hood, 1-3 Outlet of the small end of the induced air hood, 2-2 Inlet of the wind concentrator hood, 2-3 Outlet of the wind concentrator hood, 1-a Outlet surface of the induced air hood, 2-a Outlet surface of the wind concentrator hood. Detailed Implementation

[0019] The following detailed, non-limiting description of the technical solution of the present invention is provided in conjunction with preferred embodiments and accompanying drawings.

[0020] Reference Figures 1-3 A wind-inducing and wind-concentrating hood power generation device includes a wind-inducing hood 1, a wind-concentrating hood 2, a wind-concentrating channel 2-1, a wind-inducing channel 1-1, a wind turbine 3, and a solar concentrating power generation module 4. The wind-inducing hood 1 includes a large-end inlet 1-2, a small-end outlet 1-3, and a parabolic surface. The large-end inlet section is concave into an arc-shaped curved surface, and the small-end outlet section is shaped like a short tube bowl. The parabolic surface connects the large-end inlet and the small-end outlet, serving as both a wind-inducing and wind-concentrating device and a solar concentrator. The wind-concentrating hood 2 is a tapered horn shape with openings at both ends. The wind-concentrating hood 2 is coaxially fitted with the wind-inducing hood 1 and is used for wind concentration. (Refer to...) Figure 2 A wind-inducing and wind-concentrating hood power generation device has two flow channels, including wind-inducing flow channel 1-1 and wind-concentrating flow channel 2-1; wherein, wind-concentrating flow channel 2-1 is formed by the inner surface of the wind-concentrating hood and its axial channel, and wind-inducing flow channel 1-1 is formed by the annular channel formed by the outer surface of the wind-concentrating hood and the inner surface of the wind-inducing hood. Wind turbine generators 3 are installed at the outlets of wind-concentrating flow channel 2-1 and wind-inducing flow channel 1-1.

[0021] The ratio of the inlet diameter of the wind concentrator hood 2 to the air duct hood 1 is 1:2 to 1:4, the ratio of the outlet diameter of the wind concentrator hood 2 to the air duct hood 1 is 1:1.5 to 1:2, and the ratio of the inlet diameter to the axial length of the air duct hood 1 is 1.5:1 to 4:1.

[0022] The wind concentrator shroud 2 differs from the traditional jet's scaling shape, removing the diffuser component to become a tapered horn shape. The air duct 1 is a short tube cup-shaped structure with an increased degree of narrowing at the outlet. The wind concentrator shroud 2 and the air duct 1, which form the wind concentrator flow channel 2-1 and the air duct flow channel 1-1, are constructed into a flow velocity type that does not require pressurization, in order to improve the performance of the wind turbine generator 3 in flow velocity environment conditions.

[0023] The axial distance between the inlet and outlet of the wind concentrator hood 2 does not exceed the axial distance between the inlet and outlet of the wind duct hood 1.

[0024] The wind duct 1, the wind concentrator 2, and the wind turbine 3 together constitute the wind power generation module of the wind duct and wind concentrator power generation device of the present invention.

[0025] The inner surface of the wind-guiding cover 1 is a reflective and light-concentrating surface. The solar energy reflected and concentrated by the inner surface can be absorbed by the solar concentrating power generation module 4 fixed at the focal point of the wind-guiding cover 1. Here, the wind-guiding cover 1 and the solar concentrating power generation module 4 constitute the solar power generation component of the wind-guiding and wind-concentrating cover power generation device of the present invention.

[0026] This invention provides a wind-inducing and wind-concentrating hood power generation device. When the ambient airflow passes through the wind-concentrating channel 2-1, it is concentrated once in the wind-concentrating hood 2, forming a relatively high-speed airflow. At the device's contraction outlet, the airflow carries the fluid inside the wind-inducing hood 1 due to low pressure and is ejected out of the channel, achieving the effect of increasing wind speed twice. This drives the impeller of the wind turbine 3, allowing the wind turbine 3 to start and operate at a lower wind speed. Here, instead of using a baffle to reduce the outlet pressure of the wind-concentrating hood 2 as in the traditional method, the instability problem of the traditional wind-concentrating method of forming vortices to increase the wind speed of the wind turbine 3 is avoided. The wind-concentrating hood 2 has a tapered horn shape, instead of using the scaling type of the traditional ejector, so that the airflow velocity after concentration is still below supersonic speed, ensuring the stable and efficient operation of the wind turbine 3.

[0027] In addition, the parabolic wind hood 1 has a reflective and light-concentrating surface inside. When light needs to be concentrated, the reflected and concentrated light can be absorbed by the solar concentrating power generation module 4 fixed at the focal point of the wind hood 1, thereby realizing solar power generation and forming a wind-solar integrated power generation system, which effectively utilizes energy.

[0028] The wind-generating and wind-concentrating hood power generation device of the present invention is not limited to the ambient wind speeds used in the following embodiments.

[0029] Example 1

[0030] In this example, the ambient wind speed is 3 m / s. Traditional wind turbines cannot start and generate electricity at this wind speed. In this example, the inlet diameter ratio of the wind-concentrating hood 2 and the wind-inducing hood 1 is 1:4, the outlet diameter ratio is 1:2, and the inlet diameter to axial length ratio of the wind-inducing hood 1 is 1.5:1. When the incoming airflow of 3 m / s enters the wind-inducing hood 1 and the wind-concentrating hood 2, the airflow undergoes a primary wind-concentrating process through the velocity-type wind-concentrating channel 2-1 formed by the axial channel within the gradually narrowing trumpet-shaped wind-concentrating hood 2. Simultaneously, the airflow passes through the annular channel formed by the outer edge of the wind-concentrating hood 2 and the inner edge of the wind-inducing hood 1. The high-speed induced draft channel 1-1 reaches the outlet 1-3 of the short pipe cup foot at the small end of the induced draft hood 1. Due to the large degree of contraction at the outlet, the wind speed increases here, and the pressure is low, which carries the airflow and ejects it out of the channel, thereby increasing the wind speed in the induced draft hood 1 and the wind concentrator hood 2. In this example, the wind speed after induced draft and wind concentrator is 5.29 m / s, which exceeds the starting wind speed requirement of 4 m / s for low-speed wind turbine units, and is sufficient to start the wind turbine generator 3 to generate electricity. At this time, the usable wind energy is increased by 5.48 times. It can generate electricity even when the starting wind speed requirement is lower, which greatly improves the energy utilization rate.

[0031] Example 2

[0032] In this example, the ambient wind speed is 3 m / s. The ratio of the inlet diameter of the wind concentrator hood 2 to the wind duct 1 is 1:3, the ratio of the outlet diameter of the wind concentrator hood 2 to the wind duct 1 is 1:2, and the ratio of the inlet diameter to the axial length of the wind duct 1 is 1.5:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind duct 1 and the wind concentrator hood 2 increases to 4.08 m / s, which exceeds the requirement of 4 m / s for the start-up wind speed of low-speed wind turbine units. This is sufficient to start the wind turbine 3 to generate electricity. It can also generate electricity even when the wind speed requirement is lower than the start-up wind speed requirement, and the usable wind energy is increased by 2.52 times.

[0033] Example 3

[0034] In this example, the ambient wind speed is 3 m / s. The ratio of the inlet diameter of the wind concentrator 2 and the wind duct 1 is 1:2.5, the ratio of the outlet diameter of the wind concentrator 2 and the wind duct 1 is 1:1.5, and the ratio of the inlet diameter to the axial length of the wind duct 1 is 2:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind duct 1 and the wind concentrator 2 increases to 4.06 m / s, which exceeds the requirement of 4 m / s for the start-up wind speed of low-speed wind turbine units. This is sufficient to start the wind turbine 3 to generate electricity. It can also generate electricity even when the wind speed requirement is lower than the start-up wind speed requirement, and the usable wind energy is increased by 2.48 times.

[0035] Example 4

[0036] In this example, the ambient wind speed is 3 m / s. The ratio of the inlet diameter of the wind concentrator hood 2 to the wind duct 1 is 1:2, the ratio of the outlet diameter of the wind concentrator hood to the wind duct is 1:1.5, and the ratio of the inlet diameter to the axial length of the wind duct is 4:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind duct and the wind concentrator hood increases to 5.18 m / s, which exceeds the requirement of 4 m / s for the start-up wind speed of low-speed wind turbine units. This is sufficient to start the wind turbine 3 to generate electricity. It can also generate electricity even when the wind speed requirement is lower than the start-up wind speed requirement, and the usable wind energy is increased by 5.15 times.

[0037] The following are comparative examples, which are subject to the same environmental conditions as the embodiments. The wind speed of the comparative examples is 3 m / s, under which conventional wind turbines cannot start and generate electricity.

[0038] Comparative Example 1

[0039] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:1.5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:1.25, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 5:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 3.14 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0040] Comparative Example 2

[0041] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:1.5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:3, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 5:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 2.68 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0042] Comparative Example 3

[0043] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:1.25, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 5:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 3.28 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0044] Comparative Example 4

[0045] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:3, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 5:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 3.30 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0046] Comparative Example 5

[0047] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:1.5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:1.25, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 1:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 3.53 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0048] Comparative Example 6

[0049] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:1.5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:3, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 1:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 3.09 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0050] Comparative Example 7

[0051] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:1.25, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 1:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 3.55 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0052] Comparative Example 8

[0053] The ambient wind speed in the comparative example is 3 m / s. The ratio of the inlet diameter of the wind-concentrating hood 2 and the wind-inducing hood 1 in this comparative example is 1:5, the ratio of the outlet diameter of the wind-concentrating hood and the wind-inducing hood is 1:3, and the ratio of the inlet diameter to the axial length of the wind-inducing hood is 1:1. At a wind speed of 3 m / s, the wind speed at the outlet of the wind-inducing hood and the wind-concentrating hood is 3.52 m / s, which does not meet the requirement of 4 m / s for the start-up and operation of low-speed wind turbine units. Therefore, the wind turbine generator 3 cannot be started and operated to generate electricity, and wind energy cannot be utilized.

[0054] The above comparative examples, under the same environmental conditions as the embodiments, show that the ratio of the inlet diameter of the wind-gathering hood and the wind-inducing hood, the ratio of the outlet diameter of the wind hood and the wind-inducing hood, and the ratio of the inlet diameter to the axial length of the wind-inducing hood exceed the range of this invention. Specifically, they are not within the range of 1:2 to 1:4 for the inlet diameter ratio of the wind-gathering hood and the wind-inducing hood, 1:1.5 to 1:2 for the outlet diameter ratio of the wind-gathering hood and the wind-inducing hood, and 1.5:1 to 4:1 for the inlet diameter to the axial length of the wind-inducing hood. As a result, the formed flow channel exhibits the same problems as the ineffective wind gathering or vortex effect when wind is gathered by a traditional wind turbine. Consequently, the wind speed cannot be increased, and the operating wind speed requirement for starting the wind turbine cannot be met. Therefore, the wind turbine cannot utilize wind energy to generate electricity.

[0055] The above preferred embodiments are only for illustrating the technical concept and features of the present invention, and should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the technical spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wind-induced and wind-concentrating hood power generation device, characterized in that, Includes wind deflector, wind concentrator, flow channel, and wind turbine, among which, The air intake hood includes a large-end inlet, a small-end outlet, and a parabolic surface. The large-end inlet section is concave into an arc-shaped surface, and the small-end outlet section is in the shape of a short tube bowl. The parabolic surface connects the large-end inlet and the small-end outlet, and is used for air intake and concentration as well as light concentration. The wind-gathering shroud is a tapered horn shape with openings at both ends, and is coaxially fitted with the air-guiding shroud for wind gathering. The ratio of the inlet diameter of the wind-gathering hood to the air-guiding hood is 1:2 to 1:4, the ratio of the outlet diameter of the wind-gathering hood to the air-guiding hood is 1:1.5 to 1:2, and the ratio of the inlet diameter to the axial length of the air-guiding hood is 1.5:1 to 4:

1. The flow channel includes a converging flow channel and an induced flow channel. The converging flow channel is formed by the inner surface of the converging hood and its axial channel. The induced flow channel is formed by the annular channel formed by the outer surface of the converging hood and the inner surface of the induced flow hood, which is used to form a non-pressurized flow velocity type. The wind turbine is installed at the air outlet of the wind collection channel and the wind duct. The axial distance between the inlet and outlet of the wind-gathering hood does not exceed the axial distance between the inlet and outlet of the air-guiding hood.

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