JP2002295362A - Wind power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wind power generation device capable of remarkably increasing generated electricity obtained instantaneously and absorbing vibration of a windmill caused by turbulence and load imposed on a windmill shaft, capable of absorbing load due to crosswind and imposed on a part in the vicinity of the center axis of the windmill, and capable of properly transmitting the torque of the windmill. SOLUTION: Plural windmills each having one or more vanes Ab are borne on a casing Ac attached to the upper end of a main shaft Aa rotatably mounted in a post As in the same axial direction, and respectively independently rotated. Separate generators are so respectively linked to the plural windmills as to provide the respective generated power outputs by summing them. Each windmill shaft is provided with a conical bearing for supporting its thrust direction and a radial bearing for radially supporting it. For the windmill, the conical bearing for supporting the thrust direction and the radial bearing for supporting the radial direction are mounted on the windmill holding side and inside the casing, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotatably provided propeller having one or a plurality of blades at the upper end of a column, and the propeller is rotated by wind force received by the propeller, and the rotation output is connected to a generator. The present invention relates to a wind power generation device configured to obtain a power generation output.

[0002]

BACKGROUND ART In recent years, nuclear power generation and power generation by burning fossil energy such as petroleum and coal not only cause global warming and environmental destruction, but also a power consumption economy for power users. Due to the heavy burden, power generation using natural energy such as wind, water, and solar heat has been actively developed.

[0003]

2. Description of the Related Art A propeller having one or a plurality of blades is rotatably provided at the upper end of a column, and the propeller is rotated by wind force received by these propellers. Several proposals have been made for the wind power generators to be obtained.

[0003] Rotational power transmitted from a plurality of front wings located on the wind and rotated by wind power and rotational power transmitted from a plurality of rear wings rotated by the remaining wind power are gathered by a differential device to generate a generator. Is disclosed in Japanese Patent Laid-Open No. 5-2 / 1993, in which the amount of power generation per power generator is increased.
No. 31,297.

Japanese Patent Laid-Open Publication No. 2000-161187 discloses a method in which a fairing having a rotor blade which rotates according to the wind direction is provided separately from a propeller.

[0005]

However, in the invention described in Japanese Patent Laid-Open No. Hei 5-231297, the rotational power transmitted from the front wings and the rear wings is collected by a differential device. Even if it is configured to rotate the generator, there is a limit to the amount of power generated per generator, and eventually only the amount of power obtained from one generator can be obtained.

In the invention described in Japanese Patent Application Laid-Open No. 2000-161187, a fairing having a rotor blade is used. However, the fairing does not provide enough power to use a large propeller.

In the present invention, the amount of power generated instantaneously can be obtained two to four times or more, and the vibration of the propeller and the load on the propeller shaft caused by the vertical and horizontal wind loads due to the turbulence can be absorbed. It is an object of the present invention to provide a wind power generator capable of absorbing a load applied in the vicinity of a central axis of a propeller and transmitting the rotational force of the propeller to a generator accurately.

[0008]

According to a first aspect of the present invention, a plurality of propellers having one or a plurality of blades are supported in the same axial direction on a casing formed at an upper end of a main shaft rotatably provided on a column. It is an object of the present invention to provide a wind power generator which is rotated independently of each other and connected to a plurality of separate generators to each of the plurality of propellers so as to obtain their respective power generation outputs.

According to the present invention, a plurality of propellers are connected to respective generators, and the respective generator outputs are added to obtain the same. Therefore, the instantaneous electric energy can be increased by 2 to 4 times or more. it can.

According to a second aspect of the present invention, the plurality of propeller shafts are supported in the same axial direction, and each propeller shaft is provided with a conical bearing for supporting the thrust direction and a radial bearing for supporting the propeller shaft in the radial direction. A wind power generator according to claim 1 is also provided.

According to the present invention, the vibration of the propeller and the load on the propeller shaft caused by the vertical and horizontal wind loads due to the turbulence can be absorbed, and the durability of the bearing portion can be improved.

According to a third aspect of the present invention, the propeller shaft is provided with a conical bearing for supporting the thrust direction on the propeller holding side and a radial bearing for supporting the radial direction inside the casing. The present invention provides a wind power generator.

According to the present invention, it is possible to improve the strength near the center of the propeller by absorbing the load concentrated near the center of the propeller during crosswind.

According to a fourth aspect of the present invention, there is provided the wind power generator according to any one of the first to third aspects, wherein a propeller having one or a plurality of blades is provided on the right and left sides of the casing.

According to the present invention, the instantaneous electric energy can be doubled. Also, the balance between left and right is good.

According to a fifth aspect of the present invention, there is provided the wind power generator according to any one of the first to third aspects, wherein two sets of propellers each having one or a plurality of blades are provided on one side of the casing on the outer side and the inner side. It is.

According to the present invention, the instantaneous electric energy can be doubled. Also, the manufacture is relatively easy.

According to a sixth aspect of the present invention, there is provided the wind turbine generator according to any one of the first to third aspects, wherein two sets of the propellers having one or a plurality of blades are provided on the left and right sides of the casing with respect to the casing. Is provided.

According to the present invention, the instantaneous electric energy can be increased four times.

According to a seventh aspect of the present invention, there is provided the wind turbine according to the fifth to seventh aspects, wherein an inner gear is fixed inside the propeller, and a gear provided on a spindle of the generator is meshed with an inner periphery of the inner gear. A power generator is provided.

In the present invention, the gear provided on the spindle of the generator meshes with the inner periphery of the inner gear. Therefore, even if the propeller shaft swings due to strong wind, the meshing of the gears does not loosen and the gears always rotate accurately. Can be transmitted.

[0022]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1A shows a first embodiment of the present invention, in which a casing Ac formed at the upper end of a main shaft Aa rotatably provided on a column As has a propeller Ap1 having three blades Ab.
Ap2 is a wind power generation device provided one set on each of the left and right. FIG. 1B shows a second embodiment of the present invention, in which a casing Bc formed at the upper end of a main shaft Ba rotatably provided on a column Bs has a propeller Bp1 having three blades Bb.
Bp2 is a wind turbine generator provided two sets on one side, one on the outside and one on the inside. FIG. 1C shows a third embodiment of the present invention, in which a casing Cc formed at the upper end of a main shaft Ca rotatably provided on a column Cs has propellers Cp1, Cp2, and Cp3 having three blades Cb. , Cp4 are provided on the left and right, two sets each on the outer side and the inner side, for a total of four sets.

[0023]

Embodiment 1 A first embodiment shown in FIG. 1A includes a casing Ac formed at an upper end of a main shaft Aa rotatably provided on a column As (FIG. 1A), as shown in a detailed sectional view of FIG.
Propellers Ap1 and Ap2 each having a plurality of blades Ab are provided on the left and right. These propellers Ap1, Ap
The two propeller shafts Ah1 and Ah2 are supported in the casing Ac in the same axial direction, and the conical bearings Av1 and Av2 that support the thrust direction on the propeller holding sides of the respective propeller shafts Ah1 and Ah2 are provided with inner ends of the casing Ac. Radial bearings Ar1 and Ar2 that support the radial direction are provided in the section. The installation positional relationship X: Y of these bearings is approximately 50 to 70:70.
~ 50, preferably around 65:
An accurate balance is obtained around 45.

Further, the speed increasing inner gears Ai1, Ai2 are fixed inside the propellers Ap1, Ap2, and the generators Ag1, Ai2 are mounted on the inner periphery of the inner gears Ai1, Ai2.
The gears Aw1 and Aw2 provided on the spindle g2 mesh with each other.

In this way, the main shaft Aa is
And the propellers Ap1 and Ap2 are constantly controlled to rotate in a direction to receive wind by a wind direction control motor M (FIG. 5) described later.

Also, separate generators Ag1 and Ag2 are connected to the propellers Ap1 and Ap2, respectively, so that the respective power generation outputs can be added and obtained, so that the instantaneous electric energy can be doubled.

Further, by providing the conical bearings Av1 and Av2 and the radial bearings Ar1 and Ar2,
Propeller Ap due to vertical and horizontal wind loads due to turbulence
1. The vibration of Ap2 and the load on the propeller shafts Ah1 and Ah2 can be absorbed, and the durability of the bearing portion can be improved. Further, the bearing Av2 near the center of the inner propeller Ap1 is made larger than the conical bearing Av1 to absorb the load concentrated near the center of the propeller in a crosswind and improve the strength near the center of the propeller.

Further, the speed increasing inner gears Ai1, Ai1
Since the gears Aw1 and Aw2 provided on the spindles of the generators Ag1 and Ag2 mesh with the inner periphery of i2, even if the propeller shafts Ah1 and Ah2 swing due to strong wind, the meshing of the gears is not loosened and the rotation is always accurately transmitted. can do.

Note that An1 and An2 are propellers Ap1,
A cap for fixing Ap2 to the propeller shafts Ah1 and Ah2, and Am1 and Am2 are covers that cover projections such as fixing nuts and prevent the generation of hum in strong winds.

[0030]

Embodiment 2 A second embodiment shown in FIG. 1B includes a casing Bc formed at the upper end of a main shaft Ba rotatably provided on a support Bs (FIG. 1B) as shown in a detailed sectional view of FIG.
Two sets of propellers Bp1 and Bp2 having blades Bb are provided on one side inward and outward.

The propeller shafts Bh1 and Bh2 of these propellers Bp1 and Bp2 are supported in the same axial direction in the casing Bc, and the propeller shafts Bh1 and Bh2 of the propeller shafts Bp1 and Bp2 are respectively coaxial.
1, Bh2, conical bearing B supporting thrust direction
v1 and Bv2, and a radial bearing Br1 that supports the radial direction at the center of the casing Bc.
c, a radial bearing Br2 for supporting the radial direction is provided at the inner end.

The propeller shaft Bh1 is cylindrical and penetrates the propeller shaft Bh2 therein. The propeller shaft Bh2 has stepped portions Bd1 and bd2 formed with different diameters and the propeller shaft Bh2.
The conical bearings Bv1 and Bv2 are inserted and fixed in the gap with the inner periphery of h2 to fix the pull-out direction, and the waterproof urethane rubber Bu1 and Bu2 are respectively wound around to prevent entry of rain and the like into the bearings. .

The propeller shaft Bh1 is provided with a radial bearing Br1 in a gap between the propeller shaft Bh1 and the non-rotating cylindrical protection tube Bx1 which covers the outer periphery thereof, and is rotatable in the cylindrical protection tube Bx1. The conical bearing Bv2 near the center of the propeller Bp1 is larger than the conical bearing Bv1 inside the casing Bc.

A speed increasing inner gear Bi1 is fixed to the inner propeller Bp1.
The gear Bw1 provided on the spindle of the generator Bg1 meshes with the inner periphery of i1.

On the other hand, a speed-increasing gear Bi2 is fixed to the rear end of the outer propeller Bp2.
Bw provided on the spindle of generator Bg2 on the outer circumference of
2 is engaged.

Thus, the main shaft Ba is supported by the support Bs.
And the wind direction control blades BT formed on the casing Bc on the opposite side of the propellers Bp1 and Bp2.
The rotation of the propellers Bp1 and Bp2 is controlled so as to always receive the wind.

Further, by connecting the separate generators Bg1 and Bg2 to the propellers Bp1 and Bp2, respectively, and adding the respective power generation outputs, the instantaneous electric energy can be doubled.

By providing the conical bearings Bv1 and Bv2 and the radial bearings Br1 and Br2,
Propeller Bp due to vertical and horizontal wind loads due to turbulence
1, the vibration of Bp2 and the load on the propeller shafts Bh1, Bh2 can be absorbed, and the durability of the bearing portion can be improved. Further, the bearing Bv2 near the center of the inner propeller Bp1 is made larger than the conical bearing Bv1 to absorb a load concentrated near the propeller center in crosswind and improve the strength near the propeller center.

Further, since the gear Bw1 provided on the spindle of the generator Bg1 meshes with the inner periphery of the inner gear Bi1, the meshing of the gears is not loosened even when the propeller shaft Bh1 swings in a strong wind, so that the gears always rotate accurately. Can be transmitted. On the other hand, the meshing of the speed-increasing gear Bi2 at the rear end of the propeller Bp2 with the gear Bw2 of the generator Bg2 is performed by rotating the propeller shaft Bh2 to the protective tube Bx1 via the radial bearing Br1 to rotate the tubular propeller shaft Bh1.
Inside, the gears are protected via the conical bearings Bv1 and Bv2, so that the gears do not loosen without the propeller shaft Bh1 swinging due to strong wind.

Bn2 is a cap for fixing the propeller Bp2 to the propeller shaft Bh2, and Bm1 and Bm2 are covers for covering protrusions such as fixing nuts for fixing the propellers Bp1 and Bp2 to prevent the generation of a beat sound in strong wind. It is.

[0041]

Third Embodiment As shown in a detailed sectional view of FIG. 4, a third embodiment shown in FIG. 1C includes a casing Cc formed at the upper end of a main shaft Ca rotatably provided on a column Cs (FIG. 1C).
Propellers Cp1, Cp2, C having three blades Cb
A total of four sets of p3 and Cp4 are provided on each of the left and right sides, two each on the outside and inside.

The propellers Cp1, Cp2, Cp3,
The propeller shafts Ch1, Ch2, Ch3, and Ch4 of Cp4 are supported in the same axial direction in the casing Cc, and the propeller shafts Ch1, Ch2, and Ch are respectively provided.
3. Conical bearing C supporting thrust direction on Ch4
v1, Cv2, Cv3, Cv4, and a radial bearing Cr1, which supports the radial direction at the center of the casing Cc;
Radial bearings Cr2 and Cr4 for supporting Cr3 in the radial direction are provided at the inner end of the casing Bc.

The propeller shafts Ch1 and Ch3 are cylindrical and penetrate the propeller shafts Ch2 and Ch4, respectively. The propeller shafts Ch2 and Ch4 have stepped portions Cd having different diameters.
1, Cd2, Cd3, Cd4 and propeller axes Ch1, Ch
Conical bearings Cv1, Cv2, C
v3 and Cv4 are inserted and fixed to fix the pull-out direction, and urethane rubbers Cu1, Cu2 and Cu for waterproofing, respectively.
3. Cu4 is wound to prevent entry of rain and the like into the bearing.

The propeller shafts Ch1 and Ch3 are provided with radial bearings Cr1 and Cr3 in the gaps between the non-rotating cylindrical protection tubes Cx1 and Cx2 which cover the outer periphery thereof, and are rotatable in the cylindrical protection tubes Cx1 and Cx2. ing.
Further, the conical bearings Cv2 and Cv4 near the center of the inner propellers Cp1 and Cp3 are connected to the rear conical bearing Cv.
1, larger than Cv3.

The speed increasing inner gears Ci1 and Ci3 are fixed to the inner propellers Cp1 and Cp3, and the generators Cg1 and Cg1 are mounted on the inner circumference of the inner gears Ci1 and Ci3.
The gears Cw1 and Cw3 provided on the Cg3 spindle are engaged with each other.

On the other hand, speed increasing gears Ci2 and Ci4 are fixed to the rear ends of the outer propellers Cp2 and Cp4, and generators Cg2 and Cg2 are mounted on the outer periphery of the speed increasing gears Ci2 and Ci4.
The gears Cw2 and Cw4 provided on the spindle No. 4 mesh with each other.

Thus, the main shaft Ca is supported by the support Cs.
And propellers Cp1, Cp2, Cp3, Cp4 by a wind direction control motor M (FIG. 5) described later.
Is always controlled to rotate in the direction of receiving the wind.

The propellers Cp1, Cp2, Cp3,
Cp4 has separate generators Cg1, Cg2, Cg3, C
Since g4 is linked and obtained by adding the respective power generation outputs, the instantaneous electric energy can be obtained four times.

Also, the conical bearings Cv1, Cv2, Cv
v3, Cv4 and radial bearings Cr1, Cr2, C
By providing r3 and Cr4, the propellers Cp1, Cp2, Cp3,
Vibration of Cp4 and propeller axes Ch1, Ch2, Ch3, C
The load on h4 can be absorbed, and the durability of the bearing portion can be improved.

The conical bearings Cv2 and Cv4 near the centers of the inner propellers Cp1 and Cp3 are made larger than the conical bearings Cv1 and Cv3 to absorb the load concentrated near the center of the propeller in the crosswind, and The strength in the vicinity can be improved.

Further, since the gears Cw1 and Cw3 provided on the spindles of the generators Cg1 and Cg3 mesh with the inner circumference of the inner gears Ci1 and Ci3, the meshing of the gears is moderate without strong propeller shafts Ch1 and Ch3 swinging. First, the rotation can always be accurately transmitted.

On the other hand, the engagement of the speed increasing gears Ci2, Ci4 at the rear ends of the propellers Cp2, Cp4 with the gears Cw2, Cw4 of the generators Cg2, Cg4 is performed by the propeller shaft Ch.
2. A tubular propeller shaft Ch in which Ch4 rotates through protective bearings Cx1 and Cx2 via radial bearings Cr1 and Cr3.
1. Within Ch3, conical bearings Cv1, Cv
2, the gears are held via Cv3, Cv4, and the gears do not loosen without the propeller shafts Ch1, Ch3 swinging due to strong wind.

Note that Cn2 and Cn4 are propellers Cp2,
Caps Cp4 are fixed to propeller shafts Ch2, Ch4. Cm1, Cm2, Cm3 Cm4 is a cover that covers projections such as fixing nuts and prevents the generation of a beat sound in a strong wind.

FIG. 5 shows a power output system and a wind direction control mechanism used in the first embodiment. The main shaft Aa rotates in a support tube Az penetrating into the column As, and the propellers Ap1 and Ap2 are always controlled to receive wind by a motor M driven by a wind direction control device W described later. The interlocking gear G provided at the lower end of the main shaft Aa is interlocked with the gear Mg of the motor M.

Output lines L1 and L2 from the generators Ag1 and Ag2 are connected to an annular copper electrode E formed on the outer periphery of the main shaft Aa.
1, E2. On the other hand, brush electrodes Eb1 and Eb2 contacting the ring-shaped copper electrodes E1 and E2 on the inner periphery of the pillar As.
Is provided. As a result, the power output from the generators Ag1, Ag2 is output from the output lines L1, L2, the ring-shaped copper electrode E1,
E2, the electric power is sent to the power trading meter ME via the brush electrodes Eb1 and Eb2, where the respective power generation outputs are added and sent to the transmission line of the electric power company (arrow side) or for private power generation.

Note that the second embodiment has the wind direction control blade BT, and thus has the same configuration as the first embodiment except that the wind direction control mechanism is not required. Example 3
Has the same configuration as that of the first embodiment except that the number of output lines, ring-shaped copper electrodes, and brush electrodes is four each.

[0057]

According to the present invention, a plurality of propellers are connected to separate generators, respectively, and the respective power generation outputs are added. Thus, the instantaneous electric energy can be obtained two to four times. . In addition, it is possible to absorb the vibration of the propeller and the load on the propeller shaft caused by the vertical and horizontal wind loads due to the turbulence, improve the durability of the bearing part, and concentrate on the vicinity of the propeller center in the crosswind. By absorbing such a load, the strength near the center of the propeller can be improved. Furthermore, since the generator gear meshes with the inner periphery of the speed increasing inner gear, the gear mesh does not loosen even if the propeller shaft swings due to strong wind. effective.

[0058]

[Brief description of the drawings]

FIG. 1A is a perspective view of a propeller portion showing a first embodiment of the present invention.

FIG. 1B is a perspective view of a propeller part showing a second embodiment of the present invention.

FIG. 1C is a perspective view of a propeller portion showing a third embodiment of the present invention.

FIG. 2 is a detailed sectional view of the first embodiment.

FIG. 3 is a detailed sectional view of Example 2.

FIG. 4 is a detailed sectional view of Example 3.

FIG. 5 is a diagram showing a power output system and a wind direction control mechanism used in each embodiment.

[Explanation of symbols]

As, Bs, Cs Prop Aa, Ba, Ca Main shaft Ac, Bc, Cc Casing Ab ..., Bb ..., Cb ... Blades Ap ..., Bp ..., Cp ... Propellers Ah1, Ah2, Bh1, Bh2, Ch1 ~ Ch4
Propeller axis Ag1, Ag2, Bg1, Bg2, Cg1 to Cg4
Generators Av1, Av2, Bv1, Bv2, Cv1 to Cv4
Conical bearings Ar1, Ar2, Br1, Br2 Cr1 to Cr4
Radial bearings Ai1, Ai2, Bi1, Ci1, Ci3
Inner gear for speed increase Bi2, Ci2, Ci4
Gears for speed increase Aw1, Aw2, Bw1, Bw2, Cw1 to Cw4
Generator gear

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02P 9/00 H02P 9/00 F

Claims (7)

[Claims] A casing formed at the upper end of a main shaft rotatably provided in a column is provided with a plurality of propellers having one or more blades in the same axial direction and independently rotated. A wind power generator in which separate power generators are connected to the plurality of propellers, respectively, and the respective power generation outputs are added to obtain a wind power generator. 2. The propeller shaft according to claim 1, wherein the shafts of the plurality of propellers are supported in the same axial direction, and each propeller shaft is provided with a conical bearing for supporting the thrust direction and a radial bearing for supporting the propeller shaft in the radial direction. A wind power generator as described. 3. The wind turbine generator according to claim 1, wherein said propeller shaft is provided with a conical bearing for supporting a thrust direction on a propeller holding side and a radial bearing for supporting a radial direction inside a casing. 4. The wind power generator according to claim 1, wherein said propeller having one or more blades is provided on each of right and left sides of a casing. 5. The wind power generator according to claim 1, wherein two sets of the propeller having one or more blades are provided on one side of the casing, on the outer side and on the inner side. 6. A wind turbine generator according to claim 1, wherein two sets of said propellers having one or more blades are provided on the outside and inside on the left and right of the casing. 7. A motor according to claim 1, wherein an inner gear is fixed inside the propeller, and a gear provided on a spindle of the generator is meshed with an inner periphery of the inner gear.
7. The wind power generator according to 6.