CN114320756A - Wind power generation device - Google Patents
Wind power generation device Download PDFInfo
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- CN114320756A CN114320756A CN202210096053.2A CN202210096053A CN114320756A CN 114320756 A CN114320756 A CN 114320756A CN 202210096053 A CN202210096053 A CN 202210096053A CN 114320756 A CN114320756 A CN 114320756A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a wind power generation device, which comprises a downwind upper assembly, a power generation lower seat assembly and a cylinder body, wherein the downwind upper assembly is arranged on the downwind lower seat assembly; the bottom of the cylinder body is fixed on the power generation lower seat assembly, the top of the cylinder body is rotatably connected with the downwind upper assembly through a rotary support piece, and the inner cavity of the power generation lower seat assembly is communicated with the inner cavity of the downwind upper assembly through the cavity of the cylinder body; when the downwind upper assembly turns with the wind, the end part of the front side faces the wind and the downwind surface faces the wind, air is sucked from the opening of the power generation lower seat assembly by air pressure difference generated inside and outside the downwind surface and is discharged from the downwind surface of the downwind upper assembly after passing through the cavity of the barrel, and the power generation lower seat assembly performs turbine power generation according to the sucked air. The wind turbine has the advantages that any exposed fan blades are not required to be arranged, high-altitude installation and maintenance are not required, wind generated by air sucked by the difference of air pressure between inside and outside is utilized to drive the turbine to generate power, the wind speed can be improved, the wind turbine is safer, more efficient, lower in cost and more convenient to install and maintain.
Description
Technical Field
The invention relates to the technical field of green energy power generation, in particular to a wind power generation device.
Background
Wind power generation is to generate electricity by utilizing kinetic energy of wind, drive blades (also called fan blades and blades) to rotate by utilizing the wind power, and then promote the rotating speed by a speed increaser to promote a generator to generate electricity. Although wind energy is renewable energy, the wind energy has uncertainty due to large and small wind volume, the power generation is unstable, and the wind energy utilization rate is not high. Moreover, the existing wind power generation device has larger volume and high weight, and the blades and the power generation device are arranged in the high altitude, so that the investment cost is high, the installation difficulty is high, and the maintenance is inconvenient; if the wind power generation device is built in the bird migration way, the blade can cause damage to the birds; moreover, the noise of the wind power plant is large, a certain amount of infrasonic waves can be generated, and the influence of the infrasonic waves on residents close to the wind power plant is large.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, the present invention is directed to a wind power generator, which solves the problems of the conventional blade-type wind power generator that the wind speed cannot be increased and the installation and maintenance are inconvenient.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wind power generation device comprises a downwind upper assembly, a power generation lower seat assembly and a cylinder body; the bottom of the cylinder body is fixed on the power generation lower seat assembly, the top of the cylinder body is in rotary connection with the downwind upper assembly through a rotary support piece, and the inner cavity of the power generation lower seat assembly is communicated with the inner cavity of the downwind upper assembly through the cavity of the cylinder body;
when the downwind upper assembly turns with the wind, the end part of the front side faces the wind and the downwind surface faces the wind, air pressure difference generated inside and outside the downwind surface sucks air from the opening of the power generation lower seat assembly, the air is discharged from the grid plate of the downwind surface of the downwind upper assembly after passing through the cavity of the cylinder, and the power generation lower seat assembly carries out turbine power generation according to the sucked air.
In the wind power generation device, the downwind upper assembly comprises a downwind shell, a hollow support column is arranged at an opening at the bottom of the downwind shell, and the bottom of the support column is in rotary connection with the top of the barrel through a rotary support piece; the downwind surface of the downwind shell is provided with a ventilated grid plate.
In the wind power generation device, the end part of the front surface of the downwind shell is an arc surface provided with a first included angle, and the tail part of the downwind shell is an included angle surface provided with a second included angle.
In the wind power generation device, the angle range of the first included angle is 30-150 degrees, and the angle range of the second included angle is 10-120 degrees.
In the wind power generation device, the downwind surface of the downwind shell comprises an upper top surface, a left side surface and a right side surface, and the left side surface and the right side surface are respectively provided with a ventilated grid plate.
In the wind power generation device, a baffle is arranged in the middle of the downwind shell and is used for dividing the inner cavity of the downwind shell into 2 cavities; one ventilated grid plate corresponds to one cavity, and the two cavities are in one-to-one correspondence.
The wind power generation device is characterized in that the downwind upper assembly comprises a square air duct, a plurality of downwind shells are arranged inside the air duct, an expanding surrounding sheet is arranged at an air inlet of the air duct, a hollow supporting ring is arranged at an opening at the bottom of the air duct, the bottom of the supporting ring is in rotary connection with the top of the barrel through a rotary supporting piece, a plurality of supporting columns of the downwind shells are located in the supporting ring, and an inner cavity of the downwind shells is communicated with the barrel through the supporting ring.
In the wind power generation device, the power generation lower seat assembly comprises a base with an opening at one side, a generator and a fan cover are arranged inside the base, an opening is formed in the top of the base and used for being inserted into the bottom of the barrel, an air inlet of the fan cover is communicated with the bottom of the barrel, a turbine is arranged at the throat of the fan cover, and the turbine drives the generator to rotate to generate power under the action of wind power when rotating.
Compared with the prior art, the wind power generation device provided by the invention comprises a downwind upper assembly, a power generation lower seat assembly and a cylinder body; the bottom of the cylinder body is fixed on the power generation lower seat assembly, the top of the cylinder body is in rotary connection with the downwind upper assembly through a rotary support piece, and the inner cavity of the power generation lower seat assembly is communicated with the inner cavity of the downwind upper assembly through the cavity of the cylinder body; when the downwind upper assembly turns with the wind, the end part of the front side faces the wind and the downwind surface faces the wind, air pressure difference generated inside and outside the downwind surface sucks air from the opening of the power generation lower seat assembly, the air is discharged from the grid plate of the downwind surface of the downwind upper assembly after passing through the cavity of the cylinder, and the power generation lower seat assembly carries out turbine power generation according to the sucked air. The wind turbine does not need to be provided with any exposed fan blades and does not need to be installed and maintained at high altitude, the wind generated by sucking air by utilizing the difference between the internal air pressure and the external air pressure is used for driving the turbine to generate power, the wind speed can be improved, and the wind turbine is safer and more convenient to install and maintain.
Drawings
Fig. 1 is a schematic structural view of a wind power generation apparatus provided by the present invention.
Fig. 2 is an internal perspective view of a wind power generation device provided by the present invention.
Fig. 3 is a front view of a first embodiment of a downwind upper assembly in the wind turbine generator of the present invention.
Fig. 4 is an internal schematic view of a first embodiment of a downwind upper assembly in the wind turbine generator according to the present invention.
Fig. 5 is a bottom view of a first embodiment of a downwind upper assembly in the wind turbine generator of the present invention.
Fig. 6 is a schematic view of a wind direction of a first embodiment of a downwind wind upper assembly in the wind turbine generator according to the present invention.
Fig. 7 is a schematic structural view of a second embodiment of a downwind upper assembly in the wind turbine generator according to the present invention.
Fig. 8 is a schematic view of an inner perspective and a wind direction of a second embodiment of a downwind upper assembly in the wind turbine generator of the present invention.
Detailed Description
The invention provides a wind power generation device. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, a wind power generation apparatus according to an embodiment of the present invention includes a downwind upper assembly, a power generation lower assembly, and a cylinder 1; the bottom of the cylinder body 1 is fixed on the power generation lower seat assembly, the top of the cylinder body 1 and the downwind upper assembly are rotatably connected (namely the downwind upper assembly is arranged at the top of the cylinder body 1 and can rotate back and forth) through a rotary support member 2 (the conventional common structure ensures that the downwind upper assembly is in a correct position when turning with the wind), and the inner cavity of the power generation lower seat assembly is communicated with the inner cavity of the downwind upper assembly through the cavity of the cylinder body 1; when the downwind upper assembly turns with the wind, the end part of the front side of the downwind upper assembly faces the wind (namely the front side faces the wind to blow) and the downwind side faces the wind (namely the downwind side is parallel to the blowing direction), air is sucked from the opening of the power generation lower seat assembly by air pressure difference generated inside and outside the downwind side, and is discharged from the grid plate of the downwind side of the downwind upper assembly after passing through the cavity of the barrel 1, and the power generation lower seat assembly drives the turbine to generate power according to the sucked air.
In the embodiment, the Bernoulli principle is adopted, when the downwind upper assembly turns with wind, the downwind surface of the downwind upper assembly is downwind, air pressure difference is generated between the inside and the outside of the downwind surface due to the flowing of air, the air pressure outside the downwind upper assembly is smaller than the air pressure inside the downwind upper assembly, the inside of the downwind upper assembly is communicated with the inside of the power generation lower seat assembly due to the fact that the inside of the whole wind power generation device is communicated, air enters through the opening of the power generation lower seat assembly and flows through the barrel 1 (which is equivalent to generating wind in the vertical direction from bottom to top at the moment), and flows out of the downwind surface of the downwind upper assembly. The lower power generation seat assembly can drive the turbine to generate power according to wind generated by the sucked air. Therefore, any exposed fan blade is not required to be arranged, high-altitude installation and maintenance are not required, the wind generated by air sucked by the difference between the internal air pressure and the external air pressure is utilized to generate electricity (namely, the turbine is arranged in the lower power generation seat, and the wind drives the turbine to generate electricity), and the wind driven generator is safer and more convenient to install and maintain.
Referring to fig. 3 to 6, in the first embodiment, the downwind upper assembly includes a downwind housing 3, a hollow support column 4 is disposed at an opening at the bottom of the downwind housing 3 (as shown in fig. 4, a grid plate on the downwind surface is removed in fig. 4 to facilitate understanding of the internal structure), and the bottom of the support column 4 is rotatably connected to the top of the barrel 1 through the rotary support 2. The front end of the downwind casing 3 is an arc surface with a first included angle alpha, the tail of the downwind casing 3 is an included angle surface with a second included angle beta (as shown in fig. 5), and the downwind surface of the downwind casing 3 is provided with a ventilating grid plate 5 (as shown in fig. 3, specifically, a window is arranged on the downwind surface, and the grid plate 5 is installed and fixed on the window).
It should be understood that the downwind surface is a side surface provided with grid plates to transmit wind and generate air pressure difference, and in this embodiment, the left side surface, the right side surface, the upper side surface (i.e. the top surface) and the lower side surface (i.e. the bottom surface) of the downwind shell 3 can be used as the downwind surface. For this purpose, the grid plate 5 can be disposed on any one of the four sides of the left side, the right side, the upper side and the lower side of the downwind casing 3, or a grid plate 5 can be disposed on any two sides (preferably, the two sides are opposite, i.e., the left side and the right side, or the upper side and the lower side), and the specific side on which the grid plate is disposed can be set according to the requirement.
In the first embodiment, taking the downwind surface as the left side surface and the right side surface as an example, the angle range of the first included angle α is preferably 30 ° to 150 °, and the angle range of the second included angle β is preferably 10 ° to 120 °; the first included angle alpha is larger than the second included angle beta. The length ratio of the front end part, the downwind surface and the tail part of the downwind shell 3 is preferably L1: l2: l3 ═ 1:5: 3. The support column 4 is aligned with the middle of L2 downwind. The downwind surface is the largest in length and the smallest in end part of the front surface, and when wind blows to the downwind surface, the downwind shell 3 can be quickly blown to be deviated by the wind and always blows against the wind from the end part of the front surface, the downwind (the wind direction shown by the arrow at the upper part of the figure 6) of the downwind surface generates air pressure difference between the inside and the outside of the downwind surface, and the wind at the bottom (shown by the thick arrow in the figure 6) is discharged from the grid plate 5 at the side surface.
If the left side and the right side are correspondingly provided with the two grid plates 5, the middle part of the downwind shell 3 needs to be provided with a baffle 6, the baffle 6 is used for equally dividing the inner cavity of the downwind shell 3 into 2 cavities, so that air is discharged from the two cavities when the air is discharged, the cavities and the grid plates which are ventilated are arranged in a one-to-one correspondence mode, the air is ensured to flow according to a set path, and the air is prevented from taking shortcuts.
With reference to fig. 1 and fig. 2, the power generation lower seat assembly includes a base 7 with an opening at one side, a power generator 8 and a fan cover 9 are disposed inside the base 7, an opening is disposed at the top of the base 7 for inserting into the bottom of the cylinder 1, an air inlet of the fan cover 9 is communicated with the bottom of the cylinder 1, a turbine 10 is disposed at a throat of the fan cover 9, and the turbine 10 drives the power generator 8 to rotate to generate power when rotating under the action of wind power.
When natural wind in the upper horizontal direction blows to the downwind shell 3, the downwind shell 3 swings to enable the downwind surface to be downwind, the end part of the front side faces the wind, air pressure difference is generated between the inside and the outside of the downwind surface due to the flowing of the air, the air pressure of the outside is smaller than that of the inside, based on Bernoulli principle, the base 7, the cylinder 1 and the inner cavity of the downwind shell 3 are communicated, and the air at the bottom enters the wind cover 9 through the opening of the base 7, passes through the cylinder 1 and is discharged from the grid plate 5 of the downwind shell 3.
Because the air inlet of the fan cover 9 is large, the air outlet is also large and the throat is small, the air is compressed at the throat, and the formed wind power is stronger. Wind in the vertical direction from bottom to top is generated by the wind in the horizontal direction, and the turbine 10 rotates under the action of the wind in the vertical direction, so that the generator 8 is driven to rotate, and electricity can be generated. In specific implementation, the generator 8 can be connected with the input end of a rectifying circuit, the output end of the rectifying circuit is connected with the transmission line, and the electricity generated by the generator 8 is rectified by the rectifying circuit and then transmitted out, so that the electricity can be directly used by electric appliances to realize independent power supply; the generated electric energy can be supplied to a power grid to realize grid-connected power generation. The wind generator can generate electricity as long as breeze of more than 1 grade exists, and the utilization rate of wind energy is improved.
Preferably, the base 7 can adopt the structure shown in fig. 1, a bottom plate of the base 7 is provided with 3 edges perpendicular to the plane, the upper parts of the edges are spliced with a trapezoidal plane, and the top of the base is a square plane. Thus, a cavity structure which is gradually reduced towards the upper part is formed, and the pressure difference of wind can be increased. When the wind power generation device is specifically implemented, the base 7 can also be in other shapes, as long as the structural design of the cavity with the large lower part and the small upper part is met, the barrel and the components on the downwind can be supported, the center of gravity is stable and cannot be toppled over, and the shape and the material of the base are not limited.
In the second embodiment, the downwind upper assembly may also adopt the structure shown in fig. 7 (a schematic view with a top cover removed to facilitate understanding of the internal structure) and fig. 8 (an internal perspective view to facilitate understanding of the positional relationship between the support ring 14 and the support column), that is, the downwind housing 3 in the first embodiment is used to increase the wind power. The downwind upper assembly comprises a square wind channel 11, a plurality of downwind shells 3 are arranged inside the wind channel 11, an air inlet 12 (an air outlet is opposite to the air inlet, and wind is discharged from the direction shown by a dotted arrow) of the wind channel 11 is provided with a flaring surrounding sheet 13, a hollow supporting ring 14 is arranged at an opening at the bottom of the wind channel 11, the bottom of the supporting ring 14 is rotatably connected with the top of the barrel through a rotary supporting piece, and the supporting columns 4 of the downwind shells 3 are positioned in the ring of the supporting ring 14, so that the inner cavities of the downwind shells 3 can be communicated with the barrel through the supporting ring.
Since the support ring 14 needs to surround all the support struts of the downwind casing 3, resulting in a larger diameter of the support ring 14, the barrel and the base 7 in the second embodiment are sized to fit the support ring 14, larger than the barrel 1 and the base in the first embodiment. Compared with the first embodiment, the flaring surrounding sheet 13 at the air inlet 12 enables the sectional area of the air inlet to be larger, the sectional area of the middle air passage in the air passage 11 is small, so that the air speed of the middle air passage is increased and is larger than the external air speed, on the basis, a plurality of downwind shells 3 (3 in the embodiment) are arranged in the air passage 11, the middle air passage is divided into a plurality of small air passages (the air inlet and outlet directions are shown by dotted arrows in fig. 8), the downwind surface of the downwind shell 3 can generate larger air pressure difference, the cylinder body can have larger air speed, the air speed in the air passage is higher than that of the external natural wind, the structure can artificially increase the air speed in a local range, namely, the air speed of the natural wind is locally increased, the generated energy can be improved, and the utilization rate of wind power generation is improved.
In practical implementation, the cross section of the air duct 11 may be square as shown in fig. 7, or may be designed to be circular or other shapes in consideration of conditions such as geographical environment, wind power, wind speed requirement, and cost, and the shape of the air duct is not limited herein. The size of the wind power generation device can be set according to requirements, such as the structure shown in figure 1, the wind power generation device can be set to be a small portable wind power generation device, and the overall height can be as small as tens of centimeters; the wind power generation device can also be arranged in a medium or large size, and is fixed at a position to be installed, the overall height can be expanded from several meters to dozens of meters, the width (such as the width of the cylinder body, the width of the base and the like) is correspondingly scaled, and the size of the wind power generation device is not limited.
In summary, according to the wind power generation apparatus provided by the present invention, when natural wind in a horizontal direction blows towards the downwind casing, the downwind casing swings to make the downwind casing face the wind, the front end portion faces the wind, air pressure difference is generated between the inside and the outside of the downwind casing due to the flow of air, the air pressure outside is smaller than the air pressure inside, based on bernoulli principle, the base, the cylinder and the inner cavity of the downwind casing are communicated, and the air at the bottom enters from the opening of the base, passes through the cylinder and is discharged from the grid plate of the downwind casing. Wind in the vertical direction from bottom to top is generated by utilizing wind force in the horizontal direction, and the turbine rotates under the action of the wind in the vertical direction, so that the generator is driven to rotate, and power generation can be carried out. Thus, any exposed fan blade and a complex transmission mechanism are not needed, the structure is simple, and the cost is low; the generator, the turbine and other devices are installed at positions close to the ground instead of in the air, so that high-altitude operation is not needed, the generator, the turbine and other devices can be installed in all terrains, the installation is convenient, and the maintenance is simple; the wind speed in the vertical direction can be larger than the natural wind in the horizontal direction, and the wind power utilization efficiency is high; the small natural wind can also generate electricity, the noise is low, and the device is safe and environment-friendly; the power supply can be independent, grid-connected power generation can be realized, and the power supply device is suitable for large-scale popularization.
The division of the functional modules is only used for illustration, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the functions may be divided into different functional modules to complete all or part of the functions described above.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (8)
1. A wind power generation device is characterized by comprising a downwind upper assembly, a power generation lower seat assembly and a cylinder body; the bottom of the cylinder body is fixed on the power generation lower seat assembly, the top of the cylinder body is in rotary connection with the downwind upper assembly through a rotary support piece, and the inner cavity of the power generation lower seat assembly is communicated with the inner cavity of the downwind upper assembly through the cavity of the cylinder body;
when the downwind upper assembly turns with the wind, the end part of the front side faces the wind and the downwind surface faces the wind, air pressure difference generated inside and outside the downwind surface sucks air from the opening of the power generation lower seat assembly, the air is discharged from the grid plate of the downwind surface of the downwind upper assembly after passing through the cavity of the cylinder, and the power generation lower seat assembly carries out turbine power generation according to the sucked air.
2. The wind power generation device of claim 1, wherein the downwind upper assembly comprises a downwind housing, a hollow support column is arranged at an opening at the bottom of the downwind housing, and the bottom of the support column is rotatably connected with the top of the cylinder through a rotary support member; the downwind surface of the downwind shell is provided with a ventilated grid plate.
3. The wind power generation apparatus of claim 2, wherein the front end of the downwind housing is an arc-shaped surface having a first included angle, and the tail of the downwind housing is an included angle surface having a second included angle.
4. A wind power plant according to claim 3, wherein said first angle is in the range of 30 ° to 150 ° and said second angle is in the range of 10 ° to 120 °.
5. The wind power plant of claim 2, wherein the downwind side of the downwind housing comprises an upper top surface, a left side surface, and a right side surface; the left side surface and the right side surface are respectively provided with a ventilated grid plate.
6. The wind power generation device of claim 5, wherein a baffle is arranged in the middle of the downwind shell and is used for dividing the inner cavity of the downwind shell into 2 cavities; one ventilated grid plate corresponds to one cavity, and the two cavities are in one-to-one correspondence.
7. The wind power generation device of claim 1, wherein the downwind upper assembly comprises a square wind channel, a plurality of downwind shells are placed inside the wind channel, a flared surrounding piece is arranged at the wind inlet of the wind channel, a hollow supporting ring is arranged at the opening of the bottom of the wind channel, the bottom of the supporting ring is rotatably connected with the top of the barrel through a rotary supporting piece, a plurality of supporting columns of the downwind shells are arranged in the ring of the supporting ring, and the inner cavities of the downwind shells are communicated with the barrel through the supporting ring.
8. The wind power generation device according to claim 1 or 7, wherein the power generation lower seat assembly comprises a base with at least one side opened, the base is internally provided with a generator and a fan cover, the top of the base is provided with an opening for inserting into the bottom of the cylinder, an air inlet of the fan cover is communicated with the bottom of the cylinder, a throat of the fan cover is provided with a turbine, and the turbine drives the generator to rotate to generate power when rotating under the action of wind power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210096053.2A CN114320756A (en) | 2022-01-26 | 2022-01-26 | Wind power generation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210096053.2A CN114320756A (en) | 2022-01-26 | 2022-01-26 | Wind power generation device |
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| CN114320756A true CN114320756A (en) | 2022-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117927411A (en) * | 2024-02-06 | 2024-04-26 | 山东华业电气有限公司 | A wind power generation system suitable for roof |
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2022
- 2022-01-26 CN CN202210096053.2A patent/CN114320756A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117927411A (en) * | 2024-02-06 | 2024-04-26 | 山东华业电气有限公司 | A wind power generation system suitable for roof |
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