CN107725285A - A kind of wind energy conversion system vortex decay device - Google Patents
A kind of wind energy conversion system vortex decay device Download PDFInfo
- Publication number
- CN107725285A CN107725285A CN201711218027.8A CN201711218027A CN107725285A CN 107725285 A CN107725285 A CN 107725285A CN 201711218027 A CN201711218027 A CN 201711218027A CN 107725285 A CN107725285 A CN 107725285A
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- wind
- wake flow
- energy conversion
- conversion system
- wind energy
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/97—Reducing windage losses
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The present invention is a kind of wind energy conversion system vortex decay device, dissipation device is fixed on the cabin rear of wind energy conversion system by fixed support, dissipation device includes thin wall cylindrical main body, the inside of thin wall cylindrical main body passes through the mutually orthogonal several square spaces of plate type bracket even partition and several Anomalistic spaces, wake flow pipe is installed in by the space of plate type bracket even partition, wake flow pipe in square space is cylinder, wake flow pipe in Anomalistic space is nearly cylinder, several wind-guiding wings are installed inside wake flow pipe, between wake flow pipe and thin wall cylindrical main body, there is space between wake flow pipe and plate type bracket, in space, air inlet installs conical flow guiding cover, in the side of thin wall cylindrical main body air inlet, along thin wall cylindrical main body, wind gathering cover is set.The vortex decay device of the present invention, by reducing influence of the disorderly wake flow to downstream wind energy conversion system, shorten the arrangement spacing between wind power plant wind energy conversion system, improve the land utilization ratio of wind power plant.
Description
Technical field
It can change wake flow movement locus the present invention relates to a kind of wind energy conversion system vortex decay device, especially one kind, accelerate
The cylindrical appliance of vortex decay.
Background technology
In the last few years, in the wind power plant of a large amount of wind energy conversion systems aggregation, wind-powered electricity generation producer is in order to improve generated energy, it is often desired to is having
Wind energy conversion system as much as possible is installed, at this time with regard to needing to give consideration to how the position for arranging wind energy conversion system, it is determined that properly in the range of limit
Wind energy conversion system spacing, wake effect be determine wind energy conversion system spacing a vital factor.
By Aerodynamics, when a typhoon group of motors is in the wake flow of other wind energy conversion systems, wake effect can drop
The efficiency of low wind energy conversion system capture wind energy, its generated output can be by extreme influence, and there are some researches show the structural fatigue of wind energy conversion system
It can be affected so as to cause the service life reduction of wind energy conversion system.In some regions, the position of wind energy conversion system is arranged in any case, some
Wind energy conversion system is always inevitably influenceed by other wind energy conversion system wake flows on straight line.If there are other wind-force on this straight line
Machine, then capturing the efficiency of wind energy will substantially reduce compared to the wind energy conversion system in face of natural wind.Wind is dynamic by part after Wind turbines
Mechanical energy can be converted into, mechanical energy is then converted to electric energy, so that wind speed reduces.At the same time, the turbulence intensity of wind can be
Increase, the Wind turbines of rectilinear direction at a disadvantage can be affected.Wind power plant generating capacity and economy are made with wake effect
Into energy loss it is inseparable, the operating experience of wind power plant shows when wind energy conversion system is completely in wake flow, its generating efficiency
Only original 60% to 70%.
At present, most of research is all concentrated in the passive optimization of wind energy conversion system wake flow, such as considers the wind power plant choosing of wake flow
Location method, consider wind energy conversion system arrangement optimization method of wake flow etc.；The arrangement of wind power plant wind energy conversion system also can only be according to the standard of correlation
Specification, wind energy conversion system spacing is reasonably determined with reference to unit capacity and landform, the side that not a kind of active is handled wake flow
Method or device.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of on the basis of now widely used windward formula wind energy conversion system
Wind energy conversion system vortex decay device and method, by changing the movement locus of wake flow and wake flow being accelerated, wake flow can be shortened
Dissipation distance, reduce the influence to downstream wind energy conversion system, spacing is arranged between reduction wind energy conversion system, be a kind of effectively processing wind energy conversion system wake flow
Method and device.
In order to achieve the above object, the present invention is achieved by the following technical solutions：
The present invention is a kind of wind energy conversion system vortex decay device, after dissipation device is fixed on the cabin of wind energy conversion system by fixed support
Side, the device air outlet section circle of dissipation device with air inlet section circle on the same horizontal line, and with the oar of wind energy conversion system
Leaf is centrally located on same axis, and dissipation device includes thin wall cylindrical main body, and thin wall cylindrical main body is the circle of boring
Cylinder, the inside of thin wall cylindrical main body is by the mutually orthogonal several square spaces of plate type bracket even partition and several does not advise
Then space, wake flow pipe is installed in by the space of plate type bracket even partition, the wake flow pipe in square space is cylinder,
Wake flow pipe in Anomalistic space is nearly cylinder, and several wind-guiding wings are provided with inside wake flow pipe, wake flow pipe with it is described
Having between thin wall cylindrical main body between space wake flow pipe and plate type bracket has space, and the air inlet in space installs conical flow guiding
Cover, wind gathering cover is set in the side of thin wall cylindrical main body air inlet, along thin wall cylindrical main body.
Further improvement of the present invention is：The wind-guiding wing is curved, and side is circular arc plane, is fixed on wake flow inside pipe wall
On, opposite side is streamlined curved surface, and wind-guiding wing front portion camber is more than rear portion camber.
Further improvement of the present invention is：The four sides of conical flow guiding cover or three faces are the streamlined curved surface of indent.
Further improvement of the present invention is：Fixed support is cross, and fixed support one side is round with air inlet section
Two plate type brackets are fixed together in the heart, and another side is riveted on cabin rear.
Further improvement of the present invention is：Wind gathering cover extends out to extend out type from the horizontal by 45o.
The beneficial effects of the invention are as follows：The present invention passes through the vortex decay device installed in wind-force drive end unit so that passes through
The wake flow that wind machine oar leaf disk is formed, along its screw type movement locus, wake flow pipe, wake flow are entered through conical flow guiding cover
Included in tip vortex and root whirlpool, by being hit during taper fairing with radome fairing, the motion in its tangential direction is used to
Property be weakened, when wake flow flows through the wind-guiding wing, the obstruction of the wind-guiding wing make it that the section of flow tube diminishes, and the inner surface of the wind-guiding wing is curved
Degree is big, causes the air-flow velocity of wind-guiding wing inner surface to increase, and outer surface is circular arc plane and is fixed on wake flow inside pipe wall, wake flow
Speed gets a promotion, and the fairshaped curved surface of wake flow inside pipe wall, contributes to the rapid discharge of wake flow, after wake flow is by wake flow pipe, its
Screw type movement locus is changed, and is in horizontal movement, and tip vortex and root whirlpool region reduce, and wake flow passes through whole cylinder master
After wake flow pipe in body, disorderly spiral wake flow when its air-flow discharged backward will not form non-erecting device, but along level
Direction moves along a straight line, and around in the presence of turbulent flow, the wind speed at each wake flow pipe Central Line increases steadily, until returning to freedom
The air speed value of air-flow。
The invention provides a kind of cylindrical vortex decay device, to reduce shadow of the disorderly wake flow to downstream wind energy conversion system
Ring, so as to reduce the arrangement spacing between wind power plant wind energy conversion system, improve the land utilization ratio of wind power plant.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is that the blower fan structure diagram of installation vortex decay device is intended to.
Fig. 3 is wind-guiding wing section schematic diagram.
Fig. 4 is the half sectional view of wake flow pipe.
Fig. 5 is the structural representation of kuppe.
Fig. 6 is the operating diagram of the invention without vortex decay device.
Fig. 7 is the operating diagram that the present invention has vortex decay device.
Embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and further retouched in detail
State, the embodiment is only used for explaining the present invention, and protection scope of the present invention is not formed and limited.
As shown in figs. 1-7, the present invention is a kind of wind energy conversion system vortex decay device, and the dissipation device passes through fixed support 7
The rear of cabin 8 of wind energy conversion system is fixed on, the fixed support 7 is cross, and the one side of fixed support 7 is justified with air inlet section
Two plate type brackets 4 are fixed together on the center of circle, and another side is riveted on the rear of cabin 8, the device air outlet of the dissipation device
Section is justified with air inlet section circle on same horizontal line, and is centrally located at same axis with the blade of wind energy conversion system
On, the dissipation device includes thin wall cylindrical main body 1, and the thin wall cylindrical main body 1 is the cylinder of boring, the thin-walled
The inside of cylinder body 1 by the mutually orthogonal several square spaces of the even partition of plate type bracket 4 and several Anomalistic spaces,
That is the inner space of thin wall cylindrical main body is by the way that horizontally and vertically the plate type bracket 4 of equivalent is evenly spaced on direction
To come, middle part is then the space of square, and the place that plate type bracket connects with cylinder body is then irregular space,
Wake flow pipe 2 is installed in by the space of the even partition of plate type bracket 4, the wake flow pipe 2 in square space is cylinder,
Wake flow pipe 2 in Anomalistic space is nearly cylinder, and the air inlet of wake flow pipe is nearly circle that is circular or being formed with cylindrical inner wall
Shape, wake flow pipe air outlet is consistent with air inlet shape size, and wake flow inside pipe wall is smooth, is provided with inside the wake flow pipe 2
Several wind-guiding wings 3, several wind-guiding wings 3 generally cylinder or nearly cylinder inside the wake flow pipe 2, the wind-guiding
For the wing 3 to be curved, side is circular arc plane, is fixed on the inwall of wake flow pipe 2, and opposite side is streamlined curved surface, and the wind-guiding wing 3
Anterior camber is more than rear portion camber, have between the wake flow pipe 2 and the thin wall cylindrical main body 1 space, the wake flow pipe 2 and
There is space between plate type bracket 4, the air inlet installation conical flow guiding cover 6 in the space, the four sides of the conical flow guiding cover 6
Or three face be indent streamlined curved surface, in the side of the air inlet of thin wall cylindrical main body 1, along described thin
Wall cylinder body 1 sets wind gathering cover 5, and the wind gathering cover 5 extends out to extend out type from the horizontal by 45o.
As shown in fig. 6, when the rear of cabin 8 is fitted without vortex decay device, when air-flow passes through wind wheel, wind wheel is applied
Turning moment can also apply a torque equal in magnitude, in opposite direction, the exercising result of countertorque to the air-flow after wind wheel
Air-flow can be caused to turn to against wind wheel after wind wheel to rotate, the air-flow after such wind wheel can by the active force in both direction, one
The direction of individual active force is identical with direction of flow, and the direction of another active force and incoming are tangent, and the two active forces are made a concerted effort
It is the motive power of spiral wake flow as depicted, if downstream has wind energy conversion system to be in wake zone, it inputs wind speed and is lower than
The input wind speed of urticaria machine so that its power output reduces.
As shown in Fig. 7, when wind energy conversion system is provided with vortex decay device, wake flow passes through along its screw type movement locus
Conical flow guiding cover 6 enters wake flow pipe 2, tip vortex and root whirlpool included in wake flow, by during taper fairing 6 and radome fairing
Hit, the motional inertia in its tangential direction is weakened, and when wake flow flows through the wind-guiding wing 3, the obstruction of the wind-guiding wing 3 to flow
The section of pipe diminishes, and the inner surface camber of the wind-guiding wing 3 is big, causes the air-flow velocity of the upper surface of the wind-guiding wing 3 to increase, and lower surface is
Circular flat and it is fixed on the inwall of wake flow pipe 2, wake flow speed gets a promotion, and the fairshaped curved surface of the inwall of wake flow pipe 2, contributes to
The rapid discharge of wake flow, after wake flow is by wake flow pipe 2, its screw type movement locus is changed, and is in horizontal movement, and blade tip
Whirlpool and root whirlpool region reduce, and after the wake flow pipe 2 in whole cylinder body, its air-flow discharged backward will not be formed not wake flow
Disorderly spiral wake flow during erecting device, but move along a straight line in the horizontal direction, around in the presence of turbulent flow, in each wake flow pipe
Wind speed at the line of centre increases steadily, until returning to the air speed value of free stream。
The vortex decay device of the present invention, combs to wake flow, changes the movement locus of wake flow, reduce wake zone
Length, the dissipation of wake flow is accelerated, so as to reduce the arrangement spacing between wind power plant wind energy conversion system so that wind-powered electricity generation producer is same
In the range of can arrange more wind energy conversion systems.
Claims (5)
1. a kind of wind energy conversion system vortex decay device, the dissipation device passes through fixed support（7）It is fixed on the cabin of wind energy conversion system（8）
Rear, it is characterised in that：The device air outlet section circle of the dissipation device is located at same horizontal line with air inlet section circle
On, and be centrally located at the blade of wind energy conversion system on same axis, the dissipation device includes thin wall cylindrical main body（1）, institute
State thin wall cylindrical main body（1）For the cylinder of boring, the thin wall cylindrical main body（1）Inside pass through mutually orthogonal plate
Type support（4）The several square spaces of even partition and several Anomalistic spaces, by the plate type bracket（4）Even partition
Wake flow pipe is installed in space（2）, the wake flow pipe in square space（2）For cylinder, the wake flow pipe in Anomalistic space
（2）To be near cylindrical, in the wake flow pipe（2）Inside is provided with several wind-guiding wings（3）, in the wake flow pipe（2）With it is described thin
Wall cylinder body（1）Between have space, the wake flow pipe（2）And plate type bracket（4）Between have space, the air intake in the space
Conical flow guiding cover is installed at mouthful（6）, in the thin wall cylindrical main body（1）The side of air inlet, along the thin wall cylindrical main body
（1）Wind gathering cover is set（5）.
A kind of 2. wind energy conversion system vortex decay device according to claim 1, it is characterised in that：The wind-guiding wing（3）To be curved,
Side is circular arc plane, is fixed on the wake flow pipe（2）On inwall, opposite side is streamlined curved surface, and the wind-guiding wing（3）It is anterior curved
Degree is more than rear portion camber.
A kind of 3. wind energy conversion system vortex decay device according to claim 1, it is characterised in that：The conical flow guiding cover（6）'s
Four sides or three faces are the streamlined curved surface of indent.
A kind of 4. wind energy conversion system vortex decay device according to claim 1, it is characterised in that：The fixed support（7）For ten
Font, the fixed support（7）Simultaneously with round two plate type brackets in the heart in air inlet section（4）It is fixed together, another side
It is riveted on cabin（8）Rear.
A kind of 5. wind energy conversion system vortex decay device according to claim 1, it is characterised in that：The wind gathering cover（5）To extend out
Type, extended out from the horizontal by 45o.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218027.8A CN107725285B (en) | 2017-11-28 | 2017-11-28 | Wind turbine tail flow dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218027.8A CN107725285B (en) | 2017-11-28 | 2017-11-28 | Wind turbine tail flow dissipation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107725285A true CN107725285A (en) | 2018-02-23 |
| CN107725285B CN107725285B (en) | 2023-07-18 |
Family
ID=61220005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711218027.8A Active CN107725285B (en) | 2017-11-28 | 2017-11-28 | Wind turbine tail flow dissipation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107725285B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779828A (en) * | 2019-03-14 | 2019-05-21 | 沈阳航空航天大学 | A kind of efficient wind-collecting cover suitable for energy gathering type microminiature wind energy conversion system |
| CN113153636A (en) * | 2021-04-14 | 2021-07-23 | 中国科学院力学研究所 | Flow control device and method for promoting wake flow recovery of wind driven generator |
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| CN109779828B (en) * | 2019-03-14 | 2023-10-13 | 沈阳永磁电机制造有限公司 | High-efficiency wind collecting cover suitable for energy-gathering microminiature wind turbine |
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| CN113153636B (en) * | 2021-04-14 | 2022-11-22 | 中国科学院力学研究所 | Flow control device and method for promoting wake flow recovery of wind driven generator |
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| Publication number | Publication date |
|---|---|
| CN107725285B (en) | 2023-07-18 |
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