JPH0979127A - Wind power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate electric power with high reliability by reducing failure without taking manufacturing cost so much with a simple structure and without stopping operation even at the time of strong wind by enhancing safety. SOLUTION: In a wind power generation device which has a generator 4 above a column 2 arranged on a strong sill such as the ground surface 1 and propeller blades 7 on a driving shaft 5 of this generator 4 and generates electric power by driving the generator 4 when these propeller blades 7 rotate by a wind, the device has a blade inclining means 6 to incline the propeller blades 7 in the driving shaft 5 direction, and rotation is controlled by inclining the blades in the driving shaft 5 direction by this blade inclining means 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind power generator which generates power by using wind power.

[0002]

2. Description of the Related Art In recent years, with the growing tendency to protect the environment of the earth, interest in wind power generation, which is a clean energy creation in terms of electric energy creation, has increased, and a simpler structure and higher safety are achieved. And an efficient wind power generator is required.

Conventionally, in this type of wind turbine generator,
Since it is a system that uses the force of the wind to rotate the propeller blades and rotates the generator with that rotational force to generate electricity, the major issue is how to effectively absorb and control the force of the natural wind in the system. Therefore, for example, in the case of a strong wind such as a typhoon, the propeller blades rotate more than necessary, and continuing to operate the power generator may lead to failure of the equipment itself or may be dangerous, so change the pitch of the propeller blades and rotate it. It was common to drop or stop.

The method will be described below with reference to FIGS. 4 and 5. As shown in the figure, on a top of a pillar 102 installed on the ground 101, a rotary table 103 that rotates horizontally and on the rotary table 103, a substantially cylindrical generator 104 that rotates together with the rotary table 103 in a horizontal direction. There is a drive shaft 105 extending from one end face of the generator 104, and a long propeller blade 10 in the oval shape of the ship is attached to the tip of the drive shaft 105 through a blade pitch varying device 106 having a substantially flat cylindrical shape.
7, the rudder 109 is provided on the opposite end surface of the generator 104 at the end of the support rod 108 protruding in the horizontal direction.

In the above arrangement, the propeller blades rotate in response to wind from the direction of arrow A, and the generator operates via the drive shaft to generate electricity.

In the case of a strong wind such as a typhoon, the rotating shaft 110 of the blade pitch varying device 106 is rotated in the direction of the arrow B so that the propeller blade 107 is not exposed to the wind, and the blade rotation is stopped or stopped. Was.

[0007]

In such a conventional wind turbine generator, there is a problem that the pitch varying device has a complicated structure and the manufacturing cost becomes high.

Further, since the wind turbine generator is generally used under severe natural conditions, it is necessary to make the structure simpler than the complicated structure to reduce the cause of failure.

The present invention solves the above-mentioned problems. It has a simple structure, a low manufacturing cost, a high reliability with few failures, and a high safety, so that it does not stop operation even in strong winds and generates electricity. An object of the present invention is to provide a wind power generator that can be used.

[0010]

In order to achieve the above object, a wind turbine generator of the present invention has a generator on the top of a pillar installed on a sturdy base such as the ground, and a propeller on a drive shaft of the generator. A wind power generator that has blades and drives the generator by the rotation of the propeller blades by wind to generate electric power, which has blade tilting means for tilting the propeller blades in the drive axis direction. Is.

The blade inclining means is configured to incline the propeller blades in the leeward direction of the drive shaft by utilizing the force of the wind, or is configured to incline by utilizing the rotational force of the propeller blades. .

Further, a supporting pin is provided on the supporting portion of the blade, and the supporting pin is a blade tilting means that is movable by using a substantially key-shaped hole as a guide, or the blade tilting means moves the supporting pin largely. It is configured to have a pressing lever that restrains the movement with an extremely large force.

[0013]

According to the present invention, the propeller blades are inclined in the drive axis direction in the case of a strong wind such as a typhoon due to the above structure.

The inclination angle is the force of the wind, or
The greater the force of the wind that changes due to the rotational force of the propeller blades, or the greater the rotational force of the propeller blades, the greater.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, a pillar 2 installed on the ground 1
And a rotating table 3 that rotates horizontally at the top of the
There is a substantially cylindrical generator 4 in the horizontal direction that rotates together with the turntable 3 on top of which, a drive shaft 5 extends from one end face of the generator 4, and a substantially flat cylindrical blade is provided at the tip of the drive shaft 5. There is a tilting device 6, and a plurality of long oar-shaped propeller blades 7 of a ship are attached to this blade tilting device 6.

A unidirectional spring-shaped directional wing is provided on the upper portion of the generator 4. In the above configuration, arrow A
When the wind is received from the direction, the propeller blades rotate and the generator drives via the drive shaft to generate electricity.

The directional vanes are designed to allow the power generator to always face the wind even when the wind direction changes so as to sufficiently absorb the wind force.

Next, the case of strong wind such as typhoon will be described. As shown in the figure, when a strong wind blows from the direction of the arrow A, the propeller blades 7 try to rotate faster, but when the rotation becomes faster, the propeller blades 7 incline to the leeward side in the direction of the arrow B and become excessive. The force of the wind is avoided, and the speed of rotation is also suppressed. The angle of inclination of the propeller blades is automatically adjusted according to the strength of the wind, and the propeller blades rotate at a constant speed without stopping.

The blade tilting device 6 will now be described with reference to FIGS. 2 and 3. As shown in the drawing, the root support portion 7-1 of the propeller blade 7 is inserted into a substantially flat cylindrical frame body 6-1 of the blade tilting device 6, and the root support portion 7-1 has a thick cylindrical portion 7-. 2, the cylindrical thick portion 7-2 is provided with a support pin A7-3 and a support pin B7-4 which are press-fitted and fixed, and the base of the propeller blade into which the support pins A7-3 and B7-4 are inserted. The blade tilting device 6 is provided on both sides of the support portion 7-1.
Is supported by the side plate 6-2 welded to the substantially flat cylindrical frame 6-1.

Further, a spring 6-3 which is fixed to the substantially flat cylinder of the blade tilting device 6 near the root supporting portion 7-1 of the inserted propeller blade 7, and the lever 6 is attached to this spring 6-3. -4 is fixed, and the side surface of the thick cylindrical portion 7-2 is pressed to press the propeller blade 7 against the central portion of the blade tilting device 6.

The support portion of the support pin A7-3 of the side plate 6-2 is a long hole 6-5, and the support portion of the support pin B7-4 is a substantially key-shaped hole 6-6.

In the above structure, the centrifugal force of the blades is small in the state where the normal wind is blowing and the propeller blades are rotating, and the force of the lever pressing around the propeller blades overcomes the centrifugal force. , Propeller blades do not move outward from the center.

However, in the case of a strong wind such as a typhoon, when the propeller blades rotate rapidly and the number of rotations exceeds a certain value and the centrifugal force exceeds a certain value, the force of the pressing lever is overcome and the propeller blades move from the center to the outside. The movement starts along the long hole 6-5 and the substantially key-shaped hole 6-6. At the beginning of the movement, it moves straight outward, and thereafter, the long hole 6-5 serves as an axis for the substantially key-shaped hole 6-5. Since it follows along -6, the propeller blade gradually begins to tilt.

The final inclination angle of the propeller blade is determined by the shape of the substantially keyhole.

Further, the inclination angle of the propeller blade due to the strength of the wind is adjusted by the force of the pressing lever, and when the wind becomes weak, the propeller blade returns to its original position and becomes a normal rotating state, and the automatic Therefore, the inclination angle of the propeller blades is adjusted.

As described above, according to the rotation control method of the wind turbine generator of the embodiment of the present invention, the propeller blades are inclined and the force of the wind received by the blades is reduced to make it excessive when the wind is strong such as a typhoon. This prevents the blades from rotating, prevents the device from being damaged due to strong winds, and improves safety by preventing accidents due to damage to the propeller blades.

In this embodiment, the support pins A and B of the blade tilting device are fixed to the root support portion of the propeller blades and the side plates are provided with substantially key-shaped holes, but the support pins A and B are provided on the side plates. Even if it is fixed and a substantially key-shaped hole is provided in the root support portion of the propeller blade, the operation and effect are the same.

[0029]

As is apparent from the above embodiments, according to the present invention, the propeller blades are automatically tilted during strong winds such as typhoons by the blade tilting device having a structure that is simple and inexpensive to manufacture. It is possible to reduce the force of the wind received by the blades to prevent the blades from rotating excessively, prevent damage to the device due to strong winds, and prevent accidents due to damage to the propeller blades, thereby improving safety.

Further, even when the wind is strong, the rotation of the blades is automatically controlled, and normal stable rotation is obtained, so that it is possible to provide a wind power generator capable of continuing power generation without stopping the operation.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a wind turbine generator according to an embodiment of the present invention.

FIG. 2A is a side sectional view of the blade tilting device, and FIG.

FIG. 3 (a) is an explanatory view of a propeller blade support part during normal operation of the same blade tilting device, and (b) is an explanatory view of a propeller blade support part during the same strong wind.

FIG. 4 is an overall configuration diagram of a conventional wind turbine generator.

FIG. 5 (a) is an explanatory view of the same blade pitch variable device at the time of normal operation. (B) is an explanatory view at the same strong wind.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground 2 Pillar 4 Generator 5 Drive shaft 6 Blade tilting device 6-4 Pressing lever 6-6 Approximate key type hole 7 Propeller blade 7-3 Support pin A 7-4 Support pin B

Claims (5)

[Claims] 1. A generator installed on an upper portion of a pillar installed on a sturdy base such as the ground, and a propeller blade on a drive shaft of the generator, and the propeller blade is rotated by wind to thereby drive the generator. A wind power generator that drives and generates electric power has a blade inclination means for inclining the propeller blades in the drive axis direction, and the blades are inclined by the blade inclination means in the drive axis direction to control rotation. Wind power generator. 2. The wind turbine generator according to claim 1, further comprising blade tilting means for tilting the propeller blades in a leeward direction of the drive shaft by utilizing wind force. 3. The wind turbine generator according to claim 1, further comprising blade inclination means that utilizes the rotational force of the propeller blades that rotate due to the force of the wind. 4. A wind turbine generator according to claim 1, 2 or 3, wherein a supporting pin is provided on a supporting portion of the blade, and the supporting pin has a blade tilting means that is movable by using a substantially key-shaped hole as a guide. 5. A support pin is provided on a support portion of the blade, and the support pin is movable with a substantially key-shaped hole as a guide, and has a pressing lever that suppresses the movement with a larger force as the movement of the support pin increases. The blade inclination angle is automatically adjusted by the blade inclination means.
The wind power generator according to 2, 3, or 4.