CN201288633Y - High-efficient runoff dual spindle wind mill - Google Patents

Abstract

The utility model relates to a wind power conversion device, namely a high-efficiency runoff two-axis wind machine. This wind turbine is also made up of a rotating shaft 1 and a plurality of fan leaves 2. Its characteristics are: said rotating shaft 1 has two branches, and the outside of each rotating shaft 1 is equipped with a plurality of fan leaves 2, and the outer sides of the two rotating shafts 1 The distance is less than the sum of the widths of the two fan pages 2 , that is, the fan pages 2 of the two rotating shafts 1 intersect and block each other between the two rotating shafts 1 . The fan leaf 2 is preferably a parabolic leaf, because the concave wind resistance of the fan leaf 2 is relatively large, and the convex wind resistance is small. In addition, the convex fan leaf 2 shields each other between the two rotating shafts 1, which can further reduce the wind resistance, resulting in the outer fan leaf 2 of the two vertical shafts 1. The torque is far greater than the reverse torque of the leaf 2 between the two rotating shafts 1, and the leaves between the two rotating shafts push each other during the rotation, so that the defects of the existing radial flow fan on both sides of the leaf force can be overcome, making it The advantages of large stress-bearing area are highlighted, the conversion rate of wind energy is significantly improved, and the structure is simple and the performance is stable, thus providing advanced technical equipment for wind energy utilization.

Description

High-efficiency radial flow twin-axis wind turbine

technical field

The utility model relates to a wind power conversion device, namely a high-efficiency runoff two-axis wind machine

Background technique

A wind turbine is a mechanical device that uses wind power to perform work or store energy. With the shortage of energy, wind turbines are getting more and more attention from people. There are many types of wind turbines. According to the relationship between the shaft and the wind direction, there are mainly two types of axial flow and radial flow. The shaft and wind direction of the axial flow wind turbine Consistent, it is a horizontal axis, and the surface of the fan leaf is perpendicular to the axis of the rotating shaft. The wind turbine should also belong to the range of runoff, but this kind of wind turbine is rare. From common sense, the fan leaf area of the axial flow wind turbine is relatively small, generally only 3, and the wind receiving area in the static state is very limited. This is the axial flow wind turbine. The main disadvantage of the wind turbine is that the fan leaf area of the radial flow wind turbine is relatively large, but the symmetrical fan leaves on both sides of the rotating shaft are stressed at the same time, the torque is opposite, and cancel each other out, and the wind utilization efficiency is extremely low, which limits the application of the radial wind turbine. It can solve the problem of torque balance on both sides, and the radial flow wind turbine will have more advantages than the axial flow wind turbine. In the existing patent literature, it can be seen that there are many solutions to the problem of torque balance on both sides of the radial flow wind turbine, most of which are Adopt to have a plurality of air holes on the fan leaf, the method that one-way switch is installed on each air hole, the structure is more complicated, the failure rate is high, and practical value is lower, has not been popularized so far.

Contents of the invention

The purpose of this utility model is to provide a high-efficiency radial-flow double-axis wind turbine with a very small amount of counteracting moment on both sides of the rotating shaft, relatively high wind energy utilization efficiency, simple structure and stable operation.

The above-mentioned purpose is achieved by the following technical solutions: develop a high-efficiency runoff two-axis wind turbine, which is also composed of a rotating shaft and a plurality of fan pages. Multiple fan pages, the distance between the two shafts is less than the sum of the width of the two fan pages, that is, the fan pages of the two shafts are interspersed between the two shafts to block each other

The said shafts are two parallel vertical shafts or two parallel horizontal shafts

The so-called fan page is a curved fan page

The section of the curved fan page perpendicular to the shaft axis is a parabola, the line segment close to the shaft is relatively straight, and the line segment farther away from the shaft is more curved

Said each rotating shaft is evenly distributed with more than three fan pages around.

The two rotating shafts are mounted side by side in a shaft frame and are connected to the shaft frame in rotation. The upper and lower half shafts of the shaft frame are connected in rotation with the upper and lower horizontal frames of the bracket, and the bracket is fixed on the ground.

A gear is fixed on each of the two rotating shafts, and the two gears mesh with each other and rotate in opposite directions.

The top of said axle frame is provided with guide wind wing

The top of said shaft frame is provided with guide fin, and the front shaft frame of guide fin is equipped with wind deflector with said two rotating shafts, and the wind deflector is folded in half along the center line parallel with the two rotating shafts to form an angle.

The lower end of the rotating shaft is connected with the wind energy converter through the transmission mechanism

The beneficial effect of the utility model is: the wind resistance of the concave surface of the curved fan leaf is relatively large, and the wind resistance of the convex surface is small. In addition, the convex fan leaf blocks each other between the two vertical shafts or adds a windshield in front, which can further reduce the wind resistance and make the two shafts The torque generated by the outer fan is much greater than the reverse torque generated by the fan between the two rotating shafts, and the fan between the two rotating shafts pushes each other during rotation, further reducing the reverse torque, so that the force on the fan on both sides of the radial flow fan is offset The disadvantages have been overcome, and the advantages of its large force-bearing area have been highlighted. A large number of experiments have proved that this wind turbine has simple structure, stable performance, and significantly improved wind energy conversion rate. It is an advanced wind energy utilization equipment.

Description of drawings

Fig. 1 is the front view of first kind of embodiment;

Figure 2 is a top view of the first embodiment;

Figure 3 is a schematic diagram of the working principle;

Fig. 4 is the top view of second embodiment;

Fig. 5 is the front view of the third embodiment;

Fig. 6 is the top view of the third embodiment;

Fig. 7 is the left view of the third embodiment;

Fig. 8 is the front view of the fourth embodiment;

Fig. 9 is a top view of the fourth embodiment;

Fig. 10 is the left side view of the fourth embodiment;

Fig. 11 is the front view of the fifth embodiment;

Figure 12 is a top view of the fifth embodiment

Fig. 13 is the front view of the sixth embodiment;

Fig. 14 is the stress analysis diagram of the sixth embodiment;

Fig. 15 is the front view of the seventh embodiment;

Fig. 16 is a top view of the seventh embodiment

Visible in the figure: rotating shaft 1, fan leaf 2, axle frame 3, gear 4, bracket 5, half shaft 6, converter 7, guide fin 8, windshield 9

Detailed ways

The first embodiment: as shown in Figure 123, this wind turbine has two parallel rotating shafts 1, and each rotating shaft 1 is equipped with three fan pages 2. Seen from Figure 1, these fan pages are rectangular and are installed on the vertical rotating shafts. From the outside of 1, as seen from Figure 2, these fan pages 2 are evenly distributed around the vertical shaft 1, and each fan page 2 is a curved panel. The radius of curvature is relatively large, and the edge portion away from the rotating shaft 1 is relatively curved, that is, the radius of curvature is relatively small. The distance between the two rotating shafts 1 is relatively close, which is less than the sum of the widths of the two leaves 2. Therefore, the leaves 2 rotated between the two vertical shafts 1 are interspersed with each other. As shown in Figure 3, it can be seen that the force of the leaves is such that the leaves on both sides The concave surface of the leaf 2 is opposite to the wind force F, and the convex surface of the middle leaf 2 faces the wind and shields each other. The windward area is smaller than that of the two leaf leaves 2, and part of the convex surface wind force P will slide to both sides, increasing the force on the concave surfaces on both sides. Obviously, the force on the outside is greater than the force on the middle, causing both vertical shafts 1 to obtain enough torque to rotate outward

In the experiment, it was found that the fan leaf 2 between the two rotating shafts 1 not only reduces the wind receiving area due to shading, but also in the rotation shown in the figure, a negative pressure is formed behind the front fan leaf, which drives the airflow to drive the rear fan leaf Force A, at the same time, the rear fan 2 also produces a driving force B to the front fan, and the higher the speed, the greater the force AB, and the two forces complement each other, producing an unexpected effect

Of course, this kind of wind turbine is best equipped with an automatic windward device, otherwise, it can only work in the wind direction shown in the figure. Even so, it also has certain use value in seasons or places where the wind direction is relatively certain.

The second kind of embodiment: the quantity of the fan leaf 2 of this wind machine can have multiple, and the preceding example fan leaf 2 has three, and this for example has four fan leaf 2 as shown in Fig. 4 certainly can also be more, but fan leaf 2 The quantity should be adapted to its width dimension??? The page bending degree and the distance between the two vertical axes 1 etc. Of course, the bending degree of the page can be extended to a straight page

The third embodiment: as shown in Figure 567, the upper and lower ends of the two vertical shafts 1 of this wind turbine are installed in a rectangular shaft frame 3 through bearings, and the upper and lower frames of the shaft frame 3 A semi-shaft 6 is respectively arranged on the midpoint, and the shaft frame 3 is installed in a bracket 5 through the two semi-shafts 6. It can be seen that the bottom of the rotating connection bracket 5 is fixed to the ground or other foundations, and the axle frame 3 here can rotate in the inside of the bracket 5

It can also be seen in the figure that a flat gear 4 is fixed under the two vertical shafts 1, and the two gears 4 are meshed, thereby ensuring that the two vertical shafts rotate in reverse synchronously with each other, and can automatically adjust the position of the shaft bracket 3 Orientation, so that the two rotating shafts and the fan leaves actively maintain the angle opposite to the wind direction and the maximum rotational torque. Of course, the synchronous effect of the gear 4 on the two vertical shafts 1 here can also be realized by other technologies or devices such as electronic control devices.

Like a conventional wind turbine, the lower end of the vertical shaft 1 here will be connected with a wind energy converter 7. This converter 7 can be a generator, a water lifter, or an energy storage device. It can be installed under one vertical shaft or two vertical shafts

The fourth embodiment: as shown in Figure 8910, the semi-axis 6 above the axle frame 3 stretches out from the upper frame of the support 5, and a guide tail 8 is installed on it to determine the rotation of the axle frame 3 under the action of wind direction, so that the plane where the two rotating shafts 1 are located can always be kept perpendicular to the wind direction, so as to obtain the maximum wind force.

The fifth embodiment: the shape of the said pedestal 3 can have many kinds, as long as it can support the rotation of the two rotating shafts 1 and the fan leaf, and can rotate on the bracket 5 itself, as shown in Figure 1112, the shaft here Frame 3 is a tripod with upper and lower sides formed by three uprights. A horizontal frame is installed in the middle of the tripod to install shaft 1, and two half shafts 6 are respectively installed up and down. Obviously, this kind of shaft frame 3 has better stability. Some.

The sixth embodiment: as shown in Figure 1314, a windshield 9 is installed on the front of the shaft frame 3. The top view section of the windshield 9 is that the two boards folded in half from the middle to form a sharp angle just block the two boards. The guide fin 8 on the front of the rotating shaft 1 controls the position of the shaft frame 3 by means of wind force, so that the plane where the two rotating shafts 1 are located and the front windshield 9 are always relative to the wind direction. The force effect is shown in Figure 14. Between the two rotating shafts 1 The airflow against the fan leaf is resisted by the windshield 9, and only the fan leaf of the outside can receive the wind force. In addition, the sharp-angled windshield 9 also divides the airflow to both sides, increasing the pressure on the fan leaves on both sides, so as to obtain greater rotational torque.

The seventh embodiment: said rotating shaft 1 can be not only vertical, but also horizontal, or inclined. The two rotating shafts 1 shown in Figure 1516 are in a horizontal state, and other structures are the same as those of the third and fourth embodiments. The same, can also work under the action of wind

The eighth embodiment: In use of this kind of wind turbine, multiple monomers can be used at the same time according to the requirements to form various arrays

Claims (10)

1. high-efficiency runoff double-shaft wind motor, also be to constitute by rotating shaft and a plurality of fan page or leaf, it is characterized in that: said rotating shaft (1) has two, a plurality of fan pages or leaves (2) all are equipped with in the outside of every rotating shaft (1), the distance of two rotating shafts (1) is less than two fan page or leaf (2) width sums, i.e. the fan page or leaf (2) of two rotating shafts (1) is interspersed mutually blocking between two rotating shafts (1).

2. high-efficiency runoff double-shaft wind motor according to claim 1 is characterized in that: said rotating shaft (1) is vertical shaft or two parallel transverse axis of two parallel settings.

3. high-efficiency runoff double-shaft wind motor according to claim 1 is characterized in that: said fan page or leaf (2) is a curved surface fan page or leaf (2).

4. high-efficiency runoff double-shaft wind motor according to claim 4, it is characterized in that: the perpendicular cross section of said curved surface fan page or leaf (2) and shaft axis is a parabola, line segment near rotating shaft (1) is comparatively straight, and is relatively more crooked away from the line segment of rotating shaft (1).

5. high-efficiency runoff double-shaft wind motor according to claim 1 is characterized in that: the uniform all around fan page or leaf (2) more than three of said every rotating shaft (1).

6. high-efficiency runoff double-shaft wind motor according to claim 1, it is characterized in that: said two rotating shafts (1) are contained in one the pedestal (3) side by side, and be rotationally connected with pedestal (3), all have the up and down semiaxis (6) and the last lower transverse frame of support (5) of pedestal (3) are rotationally connected, and support (5) is fixed on ground.

7. high-efficiency runoff double-shaft wind motor according to claim 1 is characterized in that: respectively install a gear (4) in said two rotating shafts (1), two gears (4) are meshed and mutual reverse rotation.

8. efficient upright shaft wind motor according to claim 1 is characterized in that: the top of said pedestal (3) is provided with guiding empennage (8).

9. efficient upright shaft wind motor according to claim 8, it is characterized in that: the top of said pedestal (3) is provided with guiding empennage (8), on the place ahead pedestal (3) of guiding empennage (8) barge board (9) relative with two rotating shafts (1) is housed, barge board (9) is horn shape along the center line doubling that parallels with rotating shaft (1).

10. high-efficiency runoff double-shaft wind motor according to claim 1 is characterized in that: an end of said rotating shaft (1) interrelates by driving mechanism and wind energy converter (7).

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