CN224079251U - Wind power generation device with Venturi effect - Google Patents
Wind power generation device with Venturi effectInfo
- Publication number
- CN224079251U CN224079251U CN202521102390.3U CN202521102390U CN224079251U CN 224079251 U CN224079251 U CN 224079251U CN 202521102390 U CN202521102390 U CN 202521102390U CN 224079251 U CN224079251 U CN 224079251U
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- hollow
- wind energy
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Abstract
The utility model relates to wind power generation, in particular to a wind power generation device with venturi effect, which solves the problems that the existing wind power generation equipment has large noise, is easy to strike flying birds, has large occupied area and greatly reduces the power generation efficiency under the condition of low wind speed when being applied to urban environment; the wind collecting device comprises a wind collecting ring, a wind collecting unit, a generator and a turbine blade, wherein the wind collecting ring is used for providing air flow for the turbine blade, the wind collecting ring is of an annular structure surrounded by an inwards concave arc-shaped plate or a folded plate and is arranged at the top or the bottom of the wind collecting unit, the wind collecting ring is communicated with the wind collecting unit, the turbine blade is arranged corresponding to the wind collecting ring and is rotatably arranged in the wind collecting unit, and the generator is connected with the turbine blade.
Description
Technical Field
The utility model relates to wind power generation, in particular to a wind power generation device with venturi effect.
Background
With the increasing global demand for clean energy, wind power generation is receiving a great deal of attention as an important renewable energy utilization mode, and at present, wind power generation equipment is mostly deployed in an area far away from a city, but wind power resources in the city area cannot be effectively utilized, if conventional wind power generation equipment is deployed in the city, the following limitations exist:
1) The blades of the traditional wind power generation equipment generate strong noise during operation, and interfere with the life of surrounding residents;
2) When the blades rotate at a high speed, the blades can strike flying birds, so that the birds are injured and the ecological balance is destroyed;
3) The traditional wind power generation equipment has large occupied area, limited area in the city and difficult realization of large-scale deployment, and the average wind speed in the city is relatively low and is generally less than 4m/s, so that the efficiency of the traditional wind power generation equipment can be greatly reduced under the condition of the wind speed, and the power generation efficiency of the traditional wind power generation equipment can not be fully exerted.
Therefore, the development of a novel wind power generation device suitable for urban environments has important practical significance.
Disclosure of utility model
The utility model aims to solve the technical problems that the existing wind power generation equipment is noisy, easy to strike flying birds, large in occupied area and greatly reduced in power generation efficiency under the condition of low wind speed when applied to urban environment, and provides a wind power generation device with venturi effect.
In order to achieve the above object, the present utility model provides the following technical solutions:
the wind power generation device with the Venturi effect is characterized in that:
the wind-driven generator comprises a wind-receiving unit, a hollow wind energy collecting ring, turbine blades and a generator;
the air-pocket unit is used for providing airflow for the turbine blade;
the hollow wind energy collection ring is of an annular structure surrounded by an inward concave arc-shaped plate or a folded plate and is arranged at the top or the bottom of the air-pocket unit, and the hollow wind energy collection ring is communicated with the air-pocket unit;
The turbine blades are arranged corresponding to the hollow wind energy collecting ring and are rotatably installed in the wind receiving unit, and the generator is connected with the turbine blades.
Further, the air-catching unit comprises an air-catching seat and an air guide pipe;
The air pocket seat is of a cavity structure with an opening at the side surface;
The wind guide pipe is of a cylindrical structure and is arranged on the inner top surface of the air pocket seat along the vertical direction, the hollow wind energy collection ring is arranged on the outer top surface of the air pocket seat, and the lower end of the hollow wind energy collection ring is communicated with the upper end of the wind guide pipe;
Or the air guide pipe is of a cylindrical structure and is arranged on the outer top surface of the air-pocket seat along the vertical direction, the hollow wind energy collection ring is arranged on the outer top surface of the air-pocket seat, the air guide pipe is positioned in the hollow wind energy collection ring, and the hollow wind energy collection ring and the lower end of the air guide pipe are communicated with the air-pocket seat;
The turbine blades are coaxially and rotatably arranged in the air guide pipe, and the generator and the turbine blades are coaxially connected in the air guide pipe or are in transmission connection outside the air guide pipe.
Further, the air-pocket unit comprises a mounting frame and an air guide pipe;
The mounting frame comprises a top plate and a plurality of support columns arranged at the bottom of the top plate;
The air guide pipe is of a right-angle, obtuse-angle or acute-angle bent pipe structure, one end of the air guide pipe is arranged at the bottom of the top plate of the mounting frame, and the other end of the air guide pipe is in a horn mouth shape;
The hollow wind energy collection ring is arranged on the outer top surface of the top plate of the mounting frame, and the lower end of the hollow wind energy collection ring is communicated with one end of the air guide pipe;
The turbine blade is rotatably arranged in the air guide pipe, and the generator and the turbine blade are coaxially connected in the air guide pipe or are in transmission connection outside the air guide pipe.
Further, the front wind guiding eave is arranged at the upper edge of the side opening of the wind-pocket seat;
The front wind guiding eave is used for improving airflow flowing at the windward position at the bottom of the hollow wind energy collecting ring.
The front air guiding eave is inclined downwards, and the inclination angle is 0-30 degrees.
Further, the wind guiding device also comprises a rear wind guiding eave arranged at the upper edge of the leeward side of the wind-receiving seat;
The rear wind guiding eave is used for improving airflow flowing at the leeward position at the bottom of the hollow wind energy collecting ring.
The rear air guiding eave is inclined downwards, and the inclination angle is 0-40 degrees;
Further, the hollow wind energy collecting ring and the wind guide pipe are connected with the air pocket seat through bearings, and a wind rudder is arranged on the hollow wind energy collecting ring or the air pocket seat.
Further, the wind-catching device also comprises a base positioned below the wind-catching seat;
The bottom of the air pocket seat is connected with the base through a bearing, and a wind rudder is arranged on the hollow wind energy collecting ring or the air pocket seat.
Further, the hollow wind energy collection ring is an annular structure surrounded by a concave arc plate, and the section of the hollow wind energy collection ring is C-shaped, U-shaped or semicircular;
or the hollow wind energy collection ring is an annular structure surrounded by a concave folded plate, and the section of the hollow wind energy collection ring is V-shaped.
Further, the wind-receiving seat is of a polygonal cavity structure or an arc cavity structure, and the side opening is arranged on the windward side.
Further, the thickness of the outer ring of the hollow wind energy collection ring is larger than that of the inner ring.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the wind power generation device with the venturi effect, when wind passes through the hollow wind energy collection ring, a negative pressure area is formed at the leeward position according to the Bernoulli principle and the venturi effect, wind entering from the side opening of the wind receiving seat is sucked into the wind guide pipe to accelerate due to the existence of the negative pressure area, at the moment, the wind can push the turbine blades to rotate so as to drive the generator to rotate for generating electricity, because the design of the embedded turbine blades is adopted, the risk of bird collision is prevented, compared with the huge noise generated when the huge blades of the traditional wind power generation device rotate, the running noise of the turbine blades is small, the whole structure is compact, the occupied area is small, the wind power generation device is combined with the wind guide pipe through the hollow wind energy collection ring, airflow is optimized, the starting wind speed of the generator is reduced, and low-speed wind power resources in cities can be effectively utilized.
(2) The wind power generation device with venturi effect provided by the utility model has the advantages that the front wind guiding eave is arranged at the upper edge of the side opening of the wind-receiving seat, so that the airflow flow at the windward position at the bottom of the hollow wind energy collecting ring is improved, the rear wind guiding eave is arranged at the upper edge of the leeward side of the wind-receiving seat, the airflow flow at the leeward position at the bottom of the hollow wind energy collecting ring is improved, the formation of a negative pressure area is facilitated, and the wind speed in the wind guiding pipe is accelerated.
(3) According to the wind power generation device with the Venturi effect, one end of the air guide pipe is in a horn mouth shape, a certain gathering effect is achieved on wind, and the mounting frame comprises the top plate and the plurality of support columns arranged at the bottom of the top plate.
Drawings
FIG. 1 is a schematic perspective view of a wind turbine generator with venturi effect (turbine blades, generator and base are not shown);
FIG. 2 is a front view of a first embodiment of the present utility model (turbine blades, generator, and base are not shown);
FIG. 3 is a cross-sectional view of a wind speed CFD verification flow field in accordance with an embodiment of the present utility model;
FIG. 4 is a second cross-sectional view of a wind speed CFD verification flow field in accordance with an embodiment of the present utility model;
FIG. 5 is a vector diagram of FIG. 3;
FIG. 6 is a vector diagram of FIG. 4;
Fig. 7 is a schematic perspective view of a wind power generation device (turbine blades, generator and base are not shown) with venturi effect according to a second embodiment of the present utility model.
The reference numerals are explained as follows:
1-an air-pocket seat, 2-an air guide pipe, 3-a hollow wind energy collection ring, 4-a front air guide eave, 5-a rear air guide eave and 6-a mounting frame.
Detailed Description
The utility model is further described below with reference to the drawings and exemplary embodiments.
Embodiment one:
Referring to fig. 1 to 6, a wind power generation device with venturi effect according to the present utility model includes a wind collecting unit, a hollow wind energy collecting ring 3, turbine blades and a generator, wherein the wind collecting unit is used for providing air flow for the turbine blades.
In this embodiment, the air-catching unit includes an air-catching seat 1 and an air guide pipe 2, wherein the air-catching seat 1 is used for gathering air, and is a cavity structure with an open side, the air-catching seat 1 may be a polygonal cavity structure or an arc cavity structure, for convenience in processing, in this embodiment, the air-catching seat 1 adopts a rectangular cavity structure in the polygonal cavity structure, and the open side is disposed on the windward side, so that air gathering is facilitated.
The wind guide pipe 2 is of a cylindrical structure and is arranged on the inner top surface of the air pocket seat 1 along the vertical direction, the hollow wind energy collecting ring 3 is of an annular structure surrounded by a concave arc-shaped plate or a folded plate, if the hollow wind energy collecting ring 3 is of an annular structure surrounded by a concave arc-shaped plate, the cross section of the hollow wind energy collecting ring is of a C shape, a U shape or a semicircle shape, and if the hollow wind energy collecting ring 3 is of an annular structure surrounded by a concave folded plate, the cross section of the hollow wind energy collecting ring is of a V shape. The thickness of the outer ring of the hollow wind energy collecting ring 3 is larger than that of the inner ring, and when wind blows through the hollow wind energy collecting ring 3, a negative pressure area is formed at the lee position according to Bernoulli principle and Venturi effect.
The hollow wind energy collection ring 3 is arranged on the outer top surface of the air-pocket seat 1, the bottom of the hollow wind energy collection ring 3 is communicated with the upper end of the air guide pipe 2, or the air guide pipe 2 is still of a cylindrical structure, but is arranged on the outer top surface of the air-pocket seat 1 along the vertical direction, the hollow wind energy collection ring 3 is arranged on the outer top surface of the air-pocket seat 1, the air guide pipe 2 is positioned inside the hollow wind energy collection ring 3, and the hollow wind energy collection ring 3 is communicated with the lower end of the air guide pipe 2 and the air-pocket seat 1.
In order to adapt to the changed wind direction, the hollow wind energy collection ring 3 and the wind guide pipe 2 are respectively connected with the wind-receiving seat 1 through bearings, so that the direction of the hollow wind energy collection ring 3 can be adjusted in real time according to the wind direction, the power generation efficiency is ensured, and a wind rudder is arranged on the hollow wind energy collection ring 3 or the wind-receiving seat 1 and used for monitoring the wind direction in real time.
In order to ensure the wind collecting efficiency of the wind-holding seat 1, the side opening of the wind-holding seat 1 is required to be guaranteed to be better opposite to wind, a base is further arranged below the wind-holding seat 1, the bottom of the wind-holding seat 1 is connected with the base through a bearing, and therefore the direction of the side opening of the wind-holding seat 1 can be adjusted through rotation, and the wind collecting efficiency is guaranteed.
The turbine blades are coaxially and rotatably arranged in the air guide pipe 2, and in the embodiment, the turbine blades adopt NACA-4415 airfoil type, and the chord length c i is distributed according to the formula
Wherein C Li is a lift coefficient, phi i is an airflow inclination angle, r i is the radius of the ith section of the turbine blade, a i is an axial induction factor of the ith section, and B is the number of the turbine blades.
And the angle of attack of the turbine blade decreases from 8 ° at the root to 4 ° at the tip.
The generator and the turbine blade are coaxially connected in the air guide pipe 2, the connection mode is simple, convenient and direct, no redundant transmission part exists, the mechanical efficiency is high, if the space in the air guide pipe 2 is insufficient for installing the generator, the generator and the turbine blade can be in transmission connection outside the air guide pipe 2 through the transmission shaft, the mechanical efficiency is lost, the installation position of the generator can be selected according to actual conditions, and the installation freedom is strong.
As can be clearly seen from fig. 3 to fig. 6, in order to facilitate the formation of the negative pressure region, a front wind guiding eave 4 is arranged at the upper edge of the side opening of the wind pocket seat 1, as can be seen from fig. 3 and fig. 5, the airflow flow at the windward position at the bottom of the hollow wind energy collecting ring 3 is improved, and the front wind guiding eave 4 is inclined downwards, and the inclination angle is 0-30 °.
The upper edge of the leeward side of the air-pocket seat 1 is provided with a rear air-guiding eave 5 which is used for improving the airflow velocity at the leeward position at the bottom of the hollow wind energy collecting ring 3, and the rear air-guiding eave 5 is also inclined downwards, and the inclination angle is 0-40 degrees.
When the wind guide device is used, the side opening direction of the wind guide seat 1 and the direction of the windward surface of the hollow wind energy collecting ring 3 are adjusted according to the wind rudder, wind blows through the hollow wind energy collecting ring 3 at the moment, a negative pressure area is formed at the leeward position of the wind guide device, wind gathered into the wind guide seat 1 is sucked into the wind guide pipe 2 to be accelerated to about 1.4-2 times of the original speed of the wind guide pipe because of the existence of the negative pressure area, and finally flows out of the hollow wind energy collecting ring 3, and in the wind flowing process, turbine blades are pushed to rotate so as to drive a generator to rotate, and power generation is completed.
Embodiment two:
Referring to fig. 7, the wind power generation device with venturi effect of the present utility model includes a wind collecting ring 3, a turbine blade and a generator, wherein in the present embodiment, the wind collecting ring 3 has the same structure as that of the first embodiment, and is not described here again.
The mounting bracket 6 includes the roof and sets up a plurality of support columns in the roof bottom, it is different with the air pocket seat 1 in embodiment one, the mounting bracket 6 only plays the supporting role, no longer play the effect of gathering together the wind, the function of gathering together the wind is undertaken by guide duct 2 this moment, the difference with guide duct 2 in embodiment one lies in, guide duct 2 is right angle, acute angle or obtuse angle's return bend structure, in order to reach the best effect of gathering together the wind, adopt right angle return bend structure in this embodiment, its one end is installed in the roof bottom of mounting bracket 6, and cavity wind energy collection 3 installs the top surface at mounting bracket 6 roof, and the lower extreme communicates with the one end of guide duct 2, in order to play the effect of gathering together the wind, the other end of guide duct 2 is the horn mouth form, increase air inlet area, also play certain effect of gathering together to the wind.
The turbine blade is rotatably installed in the air guide pipe 2, and the generator and the turbine blade are coaxially connected in the air guide pipe 2 or are in driving connection outside the air guide pipe 2, and the structure of the turbine blade is the same as that of the first embodiment, and the description is omitted here.
The hollow wind energy collection ring 3 is connected with the air guide pipe 2 through a bearing and a top plate, a base can be arranged at the bottom of the mounting frame 7, the mounting frame 6 is rotationally connected with the base through the bearing, and thus the orientation of the windward side of the hollow wind energy collection ring 3 and the horn mouth of the air guide pipe 2 can be adjusted in real time according to the wind direction, the windward side of the hollow wind energy collection ring 3 and the horn mouth of the air guide pipe 2 are always over against wind, and the power generation efficiency is improved.
The windward side of the top plate is inclined downwards to form a front air guiding eave 4, the inclination angles of the front air guiding eave 4 and the top plate are the same as those of the first embodiment, the leeward side of the top plate is also inclined downwards to form a rear air guiding eave 5, the inclination angles of the front air guiding eave 4 and the rear air guiding eave 5 in the first embodiment are the same as those of the first embodiment, and the detailed description is omitted.
Compared with the first embodiment, the second embodiment has lower processing cost and simpler maintenance.
The above embodiments are merely illustrative of specific embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (10)
1. A wind power generation device with venturi effect is characterized in that:
Comprises a wind-collecting unit, a hollow wind energy collecting ring (3), turbine blades and a generator;
the air-pocket unit is used for providing airflow for the turbine blade;
The hollow wind energy collection ring (3) is of an annular structure surrounded by an inwards concave arc-shaped plate or a folded plate and is arranged at the top or the bottom of the air-pocket unit, and the hollow wind energy collection ring (3) is communicated with the air-pocket unit;
The turbine blades are arranged corresponding to the hollow wind energy collecting ring (3) and are rotatably installed in the wind receiving unit, and the generator is connected with the turbine blades.
2. The venturi-compatible wind power generation device according to claim 1, wherein:
the air-catching unit comprises an air-catching seat (1) and an air guide pipe (2);
the air pocket seat (1) is of a cavity structure with an opening at the side surface;
The air guide pipe (2) is of a cylindrical structure, is arranged on the inner top surface of the air-pocket seat (1) along the vertical direction, the hollow wind energy collection ring (3) is arranged on the outer top surface of the air-pocket seat (1), and the lower end of the hollow wind energy collection ring (3) is communicated with the upper end of the air guide pipe (2);
Or the air guide pipe (2) is of a cylindrical structure and is arranged on the outer top surface of the air-pocket seat (1) along the vertical direction, the hollow wind energy collection ring (3) is arranged on the outer top surface of the air-pocket seat (1) and the air guide pipe (2) is positioned in the hollow wind energy collection ring (3), and the hollow wind energy collection ring (3) and the lower end of the air guide pipe (2) are communicated with the air-pocket seat (1);
The turbine blades are coaxially and rotatably arranged in the air guide pipe (2), and the generator and the turbine blades are coaxially connected in the air guide pipe (2) or are in transmission connection outside the air guide pipe (2).
3. The venturi-compatible wind power generation device according to claim 1, wherein:
The air-receiving unit comprises a mounting frame (6) and an air guide pipe (2);
the mounting frame (6) comprises a top plate and a plurality of support columns arranged at the bottom of the top plate;
the air guide pipe (2) is of a right-angle, obtuse-angle or acute-angle bent pipe structure, one end of the air guide pipe (2) is arranged at the bottom of the top plate of the mounting frame (6), and the other end of the air guide pipe is in a horn mouth shape;
The hollow wind energy collection ring (3) is arranged on the outer top surface of the top plate of the mounting frame (6), and the lower end of the hollow wind energy collection ring (3) is communicated with one end of the air guide pipe (2);
The turbine blades are rotatably arranged in the air guide pipe (2), and the generator and the turbine blades are coaxially connected in the air guide pipe (2) or are in transmission connection outside the air guide pipe (2).
4. The venturi-compatible wind power generation device according to claim 2, wherein:
the front wind guiding eave (4) is arranged at the upper edge of the side opening of the wind-receiving seat (1);
the front wind guiding eave (4) is used for improving airflow flowing at the windward position at the bottom of the hollow wind energy collecting ring (3);
the front air guiding eave (4) is inclined downwards, and the inclination angle is 0-30 degrees.
5. The venturi-compatible wind power generation device according to claim 4, wherein:
The wind-guiding device also comprises a rear wind-guiding eave (5) arranged at the upper edge of the leeward side of the wind-receiving seat (1);
The rear wind guiding eave (5) is used for improving airflow flowing at the lee position at the bottom of the hollow wind energy collecting ring (3);
The rear air guiding eave (5) is inclined downwards, and the inclination angle is 0-40 degrees.
6. The venturi-compatible wind power generation device according to claim 5, wherein:
The hollow wind energy collection ring (3) and the wind guide pipe (2) are connected with the wind-receiving seat (1) through bearings, and a wind rudder is arranged on the hollow wind energy collection ring (3) or the wind-receiving seat (1).
7. The venturi-compatible wind power generation device according to claim 2, wherein:
the wind-catching device also comprises a base positioned below the wind-catching seat (1);
The bottom of the air pocket seat (1) is connected with the base through a bearing, and a wind rudder is arranged on the hollow wind energy collecting ring (3) or the air pocket seat (1).
8. A wind power plant with venturi effect according to claim 2 or 3, characterized in that:
The hollow wind energy collection ring (3) is an annular structure surrounded by a concave arc plate, and the section of the hollow wind energy collection ring is C-shaped, U-shaped or semicircular;
Or the hollow wind energy collection ring (3) is an annular structure surrounded by a concave folded plate, and the section of the hollow wind energy collection ring is V-shaped.
9. The venturi-compatible wind power generation device according to claim 2, wherein:
The wind-receiving seat (1) is of a polygonal cavity structure or an arc cavity structure, and the side opening is arranged on the windward side.
10. The venturi-compatible wind power generation device according to claim 1, wherein:
The thickness of the outer ring of the hollow wind energy collection ring (3) is larger than that of the inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521102390.3U CN224079251U (en) | 2025-05-30 | 2025-05-30 | Wind power generation device with Venturi effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521102390.3U CN224079251U (en) | 2025-05-30 | 2025-05-30 | Wind power generation device with Venturi effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN224079251U true CN224079251U (en) | 2026-04-03 |
Family
ID=99247636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202521102390.3U Active CN224079251U (en) | 2025-05-30 | 2025-05-30 | Wind power generation device with Venturi effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN224079251U (en) |
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2025
- 2025-05-30 CN CN202521102390.3U patent/CN224079251U/en active Active
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