CN207470356U - A kind of wind energy conversion system vortex decay device - Google Patents

Abstract

The utility model 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 fixing bracket, 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 near cylindrical, several wind-guiding wings are installed inside wake flow pipe, between wake flow pipe and thin wall cylindrical main body, there is gap between wake flow pipe and plate type bracket, in gap, 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 utility model by reducing influence of the disorderly wake flow to downstream wind energy conversion system, shortens the arrangement spacing between wind power plant wind energy conversion system, improves the land utilization ratio of wind power plant.

Description

A kind of wind energy conversion system vortex decay device

Technical field

The utility model is related to a kind of wind energy conversion system vortex decay device, especially one kind can change wake flow movement locus, Accelerate the cylindrical appliance of vortex decay.

Background technology

In recent 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 have 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 suitable to determine 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 Wind turbines are 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, generated output can be by extreme influence, and some researches show that the structural fatigues 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 influenced 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 as to reduce wind speed.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, 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 considers 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 relevant standard Specification reasonably determines wind energy conversion system spacing with reference to unit capacity and landform, and there is no the sides that a kind of active handles wake flow Method or device.

Invention content

To solve the above-mentioned problems, the utility model proposes on the basis of now widely used windward formula wind energy conversion system A kind of wind energy conversion system vortex decay device and method by changing the movement locus of wake flow and wake flow being accelerated, can shorten tail The dissipation distance of stream reduces the influence to downstream wind energy conversion system, arranges spacing between reduction wind energy conversion system, be that wind energy conversion system is effectively treated in one kind The method and device of wake flow.

In order to achieve the above object, the utility model is achieved through the following technical solutions：

The utility model is a kind of wind energy conversion system vortex decay device, and dissipation device is fixed on wind energy conversion system by fixing bracket Cabin rear, device air outlet section circle and the air inlet section circle of dissipation device are located on same horizontal line, and and wind-force The blade center of machine is located on same central axes, and dissipation device includes thin wall cylindrical main body, and thin wall cylindrical main body is internal empty The cylinder of the heart, the inside of thin wall cylindrical main body pass through the mutually orthogonal several square space sum numbers of plate type bracket even partition A Anomalistic space installs wake flow pipe in by the space of plate type bracket even partition, and the wake flow pipe in square space is Cylinder, the wake flow pipe in Anomalistic space is near cylindrical, several wind-guiding wings is equipped with inside wake flow pipe, in wake flow pipe Having between the thin wall cylindrical main body between gap wake flow pipe and plate type bracket has gap, and the air inlet in gap installs cone Shape kuppe sets wind gathering cover in the side of thin wall cylindrical main body air inlet, along thin wall cylindrical main body.

Further improvement of the utility model is：The wind-guiding wing is curved, and side is circular arc plane, is fixed in wake flow pipe On wall, opposite side is streamlined curved surface, and wind-guiding wing forepart camber is more than rear portion camber.

Further improvement of the utility model is：The four sides of conical flow guiding cover or three faces are the streamlined song of indent Face.

Further improvement of the utility model is：Fixing bracket is cross, fixing bracket one side and air inlet section Round two plate type brackets in the heart are fixed together, and another side is riveted on cabin rear.

Further improvement of the utility model is：Wind gathering cover is extended out to extend out type from the horizontal by 45o.

The beneficial effects of the utility model are：The utility model by being mounted on the vortex decay device of wind-force drive end unit, So that the wake flow formed by wind machine oar leaf disk, along its screw type movement locus, tail is entered through conical flow guiding cover Flow tube, tip vortex included in wake flow and root whirlpool, by being hit during taper fairing with radome fairing, in tangential direction Motional inertia be weakened, when wake flow flows through the wind-guiding wing, the obstruction of the wind-guiding wing is so that the section of flow tube becomes smaller, and the wind-guiding wing Inner surface camber is big, leads to the air-flow velocity of wind-guiding wing inner surface to increase, and circular arc plane is in outer surface and is fixed in wake flow pipe On wall, wake flow speed gets a promotion, the fairshaped curved surface of wake flow inside pipe wall, contributes to the rapid discharge of wake flow, and wake flow passes through tail After flow tube, screw type movement locus is changed, and is in horizontal movement, and tip vortex and root whirlpool region reduce, and wake flow passes through After wake flow pipe in entire cylinder body, the air-flow discharged backward will not form spiral wake flow disorderly during non-erecting device, But move along a straight line in the horizontal direction, around under the action of turbulent flow, the wind speed at each wake flow pipe Central Line increases steadily, until It is restored to the air speed value of free stream。

The utility model provides a kind of vortex decay device of cylinder, to reduce disorderly wake flow to downstream wind energy conversion system Influence, so as to reduce the arrangement spacing between wind power plant wind energy conversion system, improve the land utilization ratio of wind power plant.

Description of the drawings

Fig. 1 is the structure diagram of the utility model.

Fig. 2 is the blower fan structure diagram intention for installing vortex decay device.

Fig. 3 is wind-guiding wing section schematic diagram.

Fig. 4 is the half sectional view of wake flow pipe.

Fig. 5 is the structure diagram of kuppe.

Fig. 6 is operating diagram of the utility model without vortex decay device.

Fig. 7 is the operating diagram that the utility model has vortex decay device.

Specific embodiment

In order to deepen the understanding to the utility model, the utility model is done further below in conjunction with drawings and examples Detailed description, the embodiment are only used for explaining the utility model, and the scope of protection of the utility model is not formed and is limited.

As shown in figs. 1-7, the utility model is a kind of wind energy conversion system vortex decay device, and the dissipation device passes through fixed branch Frame 7 is fixed on 8 rear of cabin of wind energy conversion system, and the fixing bracket 7 is cross, and 7 one side of fixing bracket is cut with air inlet Round two plate type brackets 4 in the heart in face are fixed together, and another side is riveted on 8 rear of cabin, and the device of the dissipation device goes out Air port section is justified to be located on same horizontal line, and be located at same axis with the blade center of wind energy conversion system with air inlet section circle On line, the dissipation device includes thin wall cylindrical main body 1, and the thin wall cylindrical main body 1 is the cylinder of boring, described thin The inside of wall cylinder body 1 passes through the mutually orthogonal several square spaces of 4 even partition of plate type bracket and several irregular skies Between, that is to say, that 4 even partition of plate type bracket that the inner space of thin wall cylindrical main body passes through equivalent on horizontal and vertical direction It comes, intermediate part is then the space of square, and the place that plate type bracket connects with cylinder body is then irregular sky Between, the installation wake flow pipe 2 in by the space of 4 even partition of plate type bracket, the wake flow pipe 2 in square space is cylinder Shape, to be near cylindrical, the air inlet of wake flow pipe is round or is formed with cylindrical inner wall near the wake flow pipe 2 in Anomalistic space Circle, wake flow pipe air outlet is consistent with air inlet shape size, and wake flow inside pipe wall is smooth, is installed inside the wake flow pipe 2 There are several wind-guiding wings 3, several wind-guiding wings 3 generally cylinder or nearly cylinder inside the wake flow pipe 2 are described to lead For the wind wing 3 to be curved, side is circular arc plane, is fixed on 2 inner wall of wake flow pipe, and opposite side is streamlined curved surface, and wind-guiding 3 forepart camber of the wing is more than rear portion camber, there is gap, the wake flow pipe between the wake flow pipe 2 and the thin wall cylindrical main body 1 There is gap between 2 and plate type bracket 4, the air inlet installation conical flow guiding cover 6 in the gap, the conical flow guiding cover 6 Four sides or three faces are the streamlined curved surface of indent, in the side of 1 air inlet of thin wall cylindrical main body, along the institute It states thin wall cylindrical main body 1 and wind gathering cover 5 is set, the wind gathering cover 5 is extended out to extend out type from the horizontal by 45o.

As shown in fig. 6, when 8 rear of cabin is fitted without vortex decay device, when air-flow passes through wind wheel, wind wheel is applied Turning moment can also apply the torque that one equal in magnitude, direction is opposite, 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 a active force is identical with direction of flow, and the direction of another active force and incoming are tangent, the resultant force of the two active forces It is the motive power of spiral wake flow as depicted, if downstream has wind energy conversion system to be in wake zone, input wind speed is lower than The input wind speed of urticaria machine so that its output power reduces.

As shown in fig. 7, when wind energy conversion system is equipped with vortex decay device, wake flow is along its screw type movement locus, warp Conical flow guiding cover 6 enters wake flow pipe 2, tip vortex included in wake flow and root whirlpool, by during taper fairing 6 and radome fairing It hits, the motional inertia in 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 becomes smaller, and the inner surface camber of the wind-guiding wing 3 is big, leads to the air-flow velocity of 3 upper surface of the wind-guiding wing to increase, and lower surface is It circular flat and is fixed on 2 inner wall of wake flow pipe, wake flow speed gets a promotion, and the fairshaped curved surface of 2 inner wall of wake flow pipe contributes to The rapid discharge of wake flow, after wake flow is by wake flow pipe 2, 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 entire cylinder body, the 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 under the action of turbulent flow, in each wake flow pipe Wind speed at the line of centre increases steadily, until being restored to the air speed value of free stream。

The vortex decay device of the utility model, combs wake flow, changes the movement locus of wake flow, reduces wake flow The length in area accelerates the dissipation of wake flow, so as to reduce the arrangement spacing between wind power plant wind energy conversion system so that wind-powered electricity generation producer exists More wind energy conversion systems can be arranged in same range.

Claims (5)

1. a kind of wind energy conversion system vortex decay device, the dissipation device passes through fixing bracket（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 located on same central axes with the blade center of wind energy conversion system, 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 stent（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 equipped with several wind-guiding wings（3）, in the wake flow pipe（2）With it is described thin Wall cylinder body（1）Between have gap, the wake flow pipe（2）And plate type bracket（4）Between have gap, the air inlet in the gap 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）.

2. a kind of 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 inner wall, opposite side is streamlined curved surface, and the wind-guiding wing（3）Forepart is curved Degree is more than rear portion camber.

3. a kind of 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.

4. a kind of wind energy conversion system vortex decay device according to claim 1, it is characterised in that：The fixing bracket（7）It is ten Font, the fixing bracket（7）On one side 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.

5. a kind of 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 is extended out from the horizontal by 45o.