JP2014136990A - Rectifier of wind turbine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rectifier of a wind turbine capable of efficiently rotating the wind turbine by properly guiding wind to blades by positively controlling a wind direction with the self-rotation of the rectifying plate, and protecting the wind turbine by blocking the wind when it is strong, in the wind turbine in which a plurality of blades are mounted on a vertical rotating shaft.SOLUTION: In a wind turbine in which a plurality of blades 5 are mounted on a vertical rotating shaft 3, a plurality of rectifying plates 7 are mounted around the blades in a state of being rotatable in the horizontal direction; the rectifying plates are interlocked with each other; and at least one of the rectifying plates is horizontally rotated by an actuator 11, so that all of the rectifying plates are simultaneously rotated by the same angle in the same horizontal direction. A wind direction is thereby controlled by the rectifying plates so as to guide the wind to the blades, and the wind turbine is protected by blocking the wind with the rectifying plates in a strong wind.

Description

  The present invention relates to a wind turbine rectifier, and more particularly, in a wind turbine in which a plurality of blades are attached to a vertical rotation shaft, and efficiently wind the wind turbine by controlling the wind direction and preferably guiding the wind to the blades. And a rectifier that protects the windmill by blocking the wind during strong winds. The windmill in the present invention is used for power generation as an example.

  Japanese Patent Application Laid-Open No. 2006-22798 discloses a wind turbine in which a plurality of blades are attached to a vertical rotating shaft, and a current plate that controls the wind direction and guides the wind to the blades (hereinafter referred to as “conventional wind turbine current plate”). .) Is disclosed.

JP 2006-22798 A

  The rectifying plate of the conventional windmill is fixed to the windmill at a certain angle, or is disposed so as to be rotatable in the horizontal direction within a certain angle range. That is, even if the current plate of the conventional wind turbine is rotatable in the horizontal direction, it is only passively rotated by the force of the wind. It does not induce wind to the blade by controlling it. Furthermore, the current plate of the conventional windmill cannot protect the windmill by blocking the wind during strong winds.

  The present invention solves the above-described problems in the current plate of a conventional windmill, and efficiently winds the windmill by preferably guiding the wind to the blades by the rotation of the current plate and positively controlling the wind direction. An object of the present invention is to provide a wind turbine rectifier that rotates and protects the wind turbine by blocking the wind during strong winds.

In order to solve the above problems, the present invention provides a rectifier for a windmill as described below.

(1) In a windmill in which a plurality of blades are attached to a vertical rotation shaft,
Around the blade, a plurality of rectifying plates are rotatably arranged in the horizontal direction, the rectifying plates are interlocked with each other, and at least one of the rectifying plates is rotated in the horizontal direction by an actuator. This makes it possible to simultaneously rotate all the current plates in the same horizontal direction by the same angle, so that the current direction is controlled by the current plates and the wind is guided to the blades. A rectifier that protects the wind turbine by blocking it (Claim 1).

(2) Each of the rectifying plates can be rotated in the horizontal direction by being fixed to a vertical shaft that is rotatably disposed in the horizontal direction.

(3) All the vertical shafts are connected to each other through a link in order to link the respective rectifying plates to each other, and at least one of the vertical shafts is horizontally rotated by an actuator. The current plate is simultaneously rotated in the same horizontal direction by the same angle (claim 3).

(4) The link is a regular polygonal link in which ends of a plurality of link rods having the same length are connected to each other via a connecting shaft so as to be rotatable, and the vertical shaft is connected to the blade. The other end of the connecting rod, which is disposed around the periphery at equal angular intervals and has one end fixed to each of the vertical shafts, is rotatably connected to the connecting shaft.

  According to the present invention, the plurality of rectifying plates arranged around the blade are simultaneously rotated in the same horizontal direction by the same angle, and the rectifying plate is controlled in the wind direction to guide the wind to the blade. Therefore, by changing the direction of the wind blown into the windmill at any time according to the wind direction that changes every moment, the wind in the most advantageous direction can always be given to the windmill (see FIG. 1). ). That is, the windmill can be efficiently rotated regardless of the wind direction. Moreover, at the time of the strong wind by a typhoon etc., a windmill can be protected from a strong wind by closing all the baffle plates (refer FIG. 3).

FIG. 1 is a plan view showing an example of a wind turbine rectifier according to the present invention. FIG. 2 is another plan view of the apparatus. FIG. 3 is still another plan view of the apparatus. FIG. 4 is a side view schematically showing the apparatus.

In the windmill according to the present invention, a vertical rotation shaft 3 is provided on a frame 1 and a plurality of blades 5, 5,.

A plurality of rectifying plates 7, 7... Are arranged around the blades 5, 5,. That is, the rectifying plates 7, 7... Are annularly arranged so as to surround all the blades 5, 5. As an example, each rectifying plate 7 is provided with mounting portions 7b and 7c at both upper and lower ends of the plate-like portion 7a.

Each rectifying plate 7 is preferably pivotable in the horizontal direction by being fixed to a vertical shaft 9 disposed so as to be pivotable in the horizontal direction.

By linking the current plates 7 with each other, at least one of the current plates 7, 7... Is rotated in the horizontal direction by the actuator 11 so that all the current plates 7, 7. Rotate the same horizontal direction by the same angle at the same time.

In order to link the rectifying plates 7 to each other, for example, the corresponding portions of the rectifying plates 7 may be directly connected to each other via a connecting member (not shown). The vertical shafts 9 are connected to each other via a link 13, and at least one of the vertical shafts 9, 9,... • are simultaneously rotated by the same angle in the same horizontal direction.

The illustrated link 13 is a regular polygonal link in which the ends of a plurality of link rods 13a having the same length are rotatably connected to each other via a connecting shaft 13b. Are arranged at equal angular intervals around the blades 5, 5,..., And the other end 15b of the connecting rod 15 having one end 15a fixed to each vertical shaft 9 is freely rotatable about the connecting shaft 13b. Connect to

In order to rotate the vertical shaft 9 in the horizontal direction by the actuator 11, as an example, an extension 15 ′ is provided on the other end 15 b of the connecting rod 15 having one end 15 a fixed to the vertical shaft 9, and the extension 15 ′ is The actuator 11 is pivotally connected to the action part 11a.

The actuator 11 includes, for example, a male screw rod 11b having an action portion 11a at the tip thereof, screwed into a female screw (not shown) so as to be able to advance and retreat, and non-rotatable, and the female screw is rotated by an electric motor (not shown). Thus, the male screw rod 11b is advanced and retracted.

The illustrated actuator 11 is rotatably attached to the frame 1 via a rotation shaft 17.

By controlling the wind direction (the direction of the wind blown into the windmill) by the rectifying plates 7, 7..., The windmill is efficiently rotated by preferably guiding the wind to the blades 5, 5,. The wind turbines are protected by blocking the wind from the current plates 7, 7.

That is, the actuator 11 rotates the rectifying plates 7, 7... As described above according to the wind direction and wind speed of the wind blown into the windmill. For this purpose, the wind turbine is provided with an anemometer 21 as an example, and the actuator 11 is operated according to the wind direction and the wind speed measured by the anemometer 21.

In FIG. 1, the wind is blowing from the upper side to the lower side as indicated by the arrow A with respect to the windmill, but the wind direction is changed as shown by the arrow A ′ by the rectifying plates 7, 7. The wind is concentrated on the blade 5a.

When the strong wind such as typhoon or the like, the rectifying plates 7, 7... Rotate and close the entire periphery of the blades 5, 5,. Protect the windmill by avoiding it. As an example, the rectifying plates 7, 7... Are closed to protect the windmill when the wind speed exceeds 10 m / sec or when the rotational speed of the windmill exceeds 300 rpm.

As an example, the anemometer 21 is provided with a propeller at one end of a streamlined body and a vertical tail plate-like body at the other end of the body. When the wind direction anemometer 21 receives wind, the wind direction is determined by rotating the propeller in a direction facing the windward by the vertical tail plate-like body, and the wind speed is measured by the rotation speed of the propeller.

DESCRIPTION OF SYMBOLS 1 Frame 3 Vertical rotating shaft 5 Blade 5a Blade 5b Blade 5c Blade 7 Current plate 7a Plate-like part 7b Attachment part 7c Attachment part 9 Vertical axis 11 Actuator 11a Action part 11b Male thread rod 13 Link 13a Link rod 13b Link shaft 15 Link rod 15a One end 15b The other end 15 ′ Extension 17 Rotating shaft 21 Anemometer

Claims (4)

In a windmill with multiple blades attached to the vertical rotation axis,
Around the blade, a plurality of rectifying plates are rotatably arranged in the horizontal direction, the rectifying plates are interlocked with each other, and at least one of the rectifying plates is rotated in the horizontal direction by an actuator. This makes it possible to simultaneously rotate all the current plates in the same horizontal direction by the same angle, so that the current direction is controlled by the current plates and the wind is guided to the blades. A rectifying device characterized in that the wind turbine is protected by blocking.   2. The rectifier according to claim 1, wherein each of the rectifying plates is fixed to a vertical shaft that is rotatably disposed in the horizontal direction, thereby being rotatable in the horizontal direction. In order to link the rectifying plates to each other, the vertical shafts are connected to each other through a link, and at least one of the vertical shafts is rotated in the horizontal direction by an actuator. 3. The rectifier according to claim 2, wherein the rectifier is simultaneously rotated by the same angle in the same horizontal direction.   The link is a regular polygonal link in which each end of a plurality of link rods having the same length is rotatably connected to each other via a connecting shaft, and the vertical shaft is arranged around the blade. 4. The rectifier according to claim 3, wherein the other end of a connecting rod, which is disposed at an angular interval and has one end fixed to each vertical shaft, is rotatably connected to the connecting shaft.

Images