JP2009019622A - Variable blade type darrieus wind turbine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Darrieus wind turbine having mixed wind rotary blades in both positive and negative rotations for the wind blades, which is improved in its efficiency. <P>SOLUTION: The control frames 14 are provided to facilitate the control of the blades for a wind turbine, and program parameter-processing is performed for a rotor by converting two-divided wind direction to a sensor signal by a location controller. A motor is controlled and driven with control signals, control frames 14 are positioned correctly to wind direction 30. The assembled part pinions act on lacks at the blade angle change grooves of the control frames 14 on both ends of blades 2 arranged in the free condition to the rotor and changes to a rotary blade angle available in the rotary direction. When the blades reach the position of the blade angle of reverse rotation by receiving wind after increasing the number of the rotary blades, the angle is changed to an angle of a small wind resistance at the wind angle change point and the wind passes through a guide portion. By rectifying the wind passing through the wind turbine, and by repeating the operation for the control order, the number of wind-receiving blades are increased. A spring safety system is provided to the assemble portion of the end of the blade, and when the wind-receiving blades receive overload beyond expectation, the blades become a free condition instantaneous by regardless of the wind direction by losing the balance between the wind force received by the blades and the force of the spring. When the spring force wins the blades are restored to the original positions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

This invention uses the constantly changing wind direction for Darrieus type windmills, and changes the blade angle so that the airflow pressure difference flowing between the front and back of the blades is maximized according to the rotation direction of the windmills, and the same rotational force that can be used in the windmills In the section where the rotational force that can be used is not obtained even if the direction is aligned and the blade angle is changed, the resistance of the blade due to the wind speed is reduced to prevent unnecessary passage of the wind passing through the windmill, effectively using the wing on the leeward side In the field of improving wind receiving efficiency of rotating wind turbines.

Problems to be solved by the invention

To help the future generations, such as reducing the environmental impact of the earth and preventing global warming Manipulating the blade angle to change the blade angle so that the difference in airflow pressure flowing between the front and back of the blade is maximized, aligning the rotational force available in the windmill in the same direction, increasing the rotational force of the rotor, and constantly changing The wind direction is detected by a sensor, converted to a wind direction signal by a converter, processed by a program control parameter by a position controller, and then driven by a drive control signal. Operate the driving device, control drive the servo motor, the control shaft 19 faces the control frame 14 in the wind direction and changes the blade angle of the rotor arrangement to the optimum wind receiving angle that can be used effectively to receive the wind. If the wind turbine blades have an unexpected load, we want to add a function to avoid destruction.

Means for solving the problem

A product system is used to enable the control frame to follow the control of the wind direction. As an outline of the control system, an in-house power source is used as the system power supply, the wind direction sensor detects the wind direction and converts it into a voltage output signal, and After the rotation direction is determined and the program parameter processing is performed by the position control device, the drive control signal is converted to the operation motor by the conversion drive device, and the control drive shaft 19 controls the control frame 14 in the wind direction, and the direction detection shaft 27 The position information was detected by a sensor, and the drive control device was made to follow the feedback wind direction.

The gathering part 1 is arranged at both ends of the blade 2, and the gathering part is composed of a small gear 3, a roller-4 shaft part 11 and a coil-shaped ridge 7 in the case 8, and a guide 20 is used to receive the blade at an optimum angle for receiving wind. The gathering parts were fixed to both ends of the wing 2 with the fixing bracket 6 so as to be.

The control frame 14 does not rotate and controls the wind direction, and has a wing angle conversion groove 17 and a rack 16 of a size necessary for the wing angle change of the wing 2 of the rotor arrangement with the wing angle change and the wing angle holding mechanism. I made it.

The upper and lower portions of the control frame 14 are controlled by a control frame fixing rod 15 so as to be controlled.

The guide 20 of the control frame 14 has a rack 16 having the same curvature as the control frame 14 and a size capable of rotating the blade 2 to a usable rotational force angle, and a groove having a required size at each blade angle change point. The control frame 14 inside and outside the unit is integrated with the fixing bracket 13 so that the holding roller 4 can smoothly pass through the gap of the guide 20 and the blade 2 can receive wind effectively.

The blade angle conversion point is within the blade angle conversion groove 17 of the control frame 14, and the roller 4 of the collecting portion 1 completely exits the guide portion, and the rack and small gear on the control frame 14 within the blade angle conversion groove. The required wing angle was achieved.

The upper and lower portions of the rotor frame 9 are united by a driving shaft 12, and in a free state, the blade assembly portion 5 has a plurality of equally spaced blades 2 arranged in a mounting hole 11 to form a rotor.

Coil-type ridges 7 are arranged at both ends of the wings in the wing case 8 of the safety device of the wing 2 gathering portion 1 with a key in the wing tip, and the gathering portion 1 is fixed to both wing tips with fixing brackets 6.

The wind receiving body of the control frame 14 and the rotor 32 arranged on the blade 2 is attached to the gantry 25 so that the wind force can be used as a rotational power source for a power source such as a generator in a horizontal place where the wind condition is good.

The drive control servo motor is installed on the top of the gantry 25 so that the control shaft 19 is made to follow the control frame 14 in the wind direction 30 with the control servo motor in accordance with the electrical signal and directly face the wind direction. did.

The wind direction pedestal base 28 is installed on the gantry 25, and the direction detection shaft 27 detects the direction of the wind in conjunction with the encoder, interlocks with the encoder, and drives and controls the control servo motor via the control device. The shaft 19 was driven.

The mirror surfaces on the upper and lower outer sides of the control frame 14 are attached with a blind plate to prevent the wind from blowing through to effectively use the wind.

The operation panel for wind direction discrimination, position control and drive control, etc. can be easily installed and maintained at a nearby location or under the gantry 25.

The two wing surfaces were made into a hollow 2 with an aggregate arrangement in a shape that is easy to receive wind and has a small resistance to airflow.

As a measure against lightning damage, a lightning rod was installed at the top of the gantry, and the lead wires to the ground were sufficiently insulated and grounded at a place with low grounding resistance to make a lightning arrester.

Means for solving the problem

The invention's effect

Using constantly changing wind speed and wind direction, the blade angle is changed at the set position of the control frame according to the rotation of the impeller, and the blade rotational force available in the impeller is aligned in the same direction to increase the rotational force of the impeller and receive wind The blade angle section that cannot be used for rotational force is improved in the wind direction, and the blade 2 has a low resistance blade angle in the wind direction. If an effect is obtained and an unexpected load is suddenly applied to the wing, it can be expected to instantaneously return to the original state after avoiding an accident due to a low resistance to the wind direction.

The product system is used to enable the control frame to follow the control of the wind direction. The outline of the control system is to detect the wind direction with a sensor and convert it to a voltage output signal to determine the direction of rotation of the direction, with the position control device After processing the program parameters, the servo motor is driven by the conversion drive device for the wind direction drive control device signal, the control shaft 19 faces the control frame 14 in the wind direction, and the position information of the control shaft 19 is detected by the sensor. In the position detection and drive control device, the control system follows the wind direction of the feedback. The control frame 14 does not rotate, the wind direction follows the action, the blade angle is changed and the blade angle of the set section is maintained to increase the number of wind receiving blades. Is to increase the rotational force.

The product system is used to enable the control frame to follow the control of the wind direction. As an outline of the control system, an external power supply or a private power supply is used as the system power supply, the wind direction is detected and converted into a voltage output signal, and the direction of rotation of the bearing After the program parameter processing is performed by the position control device, the drive control signal is converted by the conversion drive device, the operation motor is controlled by the control drive control shaft 19 with the control frame 14 facing the wind direction, and the position information of the control shaft 19 Is a control device that detects the wind direction with a sensor and causes the drive control device to follow the feedback wind direction.

The control frame 14 does not rotate and controls the wind direction, and has the functions of facing, changing the blade angle, and maintaining the blade angle. The blade 2 of the rotor arrangement has a blade angle conversion groove 17 and a rack 16 of a size necessary for changing the blade angle. It was a thing.

The control frame 14 does not rotate, controls the direction of the wind, and is set to face up, change the blade angle, and maintain the blade angle conversion groove of the size required for the blade angle conversion of the equally spaced blades 2 in the rotor frame 9. 17 and the rack 16 are arranged and fixed at necessary positions, and the upper and lower control frames 14 are symmetrically made into one body by a control frame fixing rod.

The control frame 14 is provided with a rack 16 having the same curvature as the control frame 14 and capable of making the blade 2 have an optimum angle for receiving wind at the blade angle conversion point on the control frame 14, and the blade 2 receives wind in the blade angle conversion groove 17. The inner / outer control frame 14 is fixed to one body by the fixing bracket 13 so that the guide portion 20 can be smoothly moved to the guide portion 20 at an optimum angle, and the interval between the guide portions 20 is maintained.

The rotor frame 9 is a single body with the driving shaft 12, and a plurality of equally spaced blades 2 are arranged in a free state to form a rotor.

As the blade 2 passes through the guide 20, the coil-type ridge 7 is attached to the collecting portion 1 in the ridge case 8 as a blade angle holding wind receiving and safety device with the roller 4.

The wind receiving body made of the control frame 14 and the rotor 9 arranged with the blades 2 is attached to the mount 25 and installed in a horizontal place with good wind conditions so that it can be used as a power source such as a generator.

A servo motor for drive control is installed on the top of the gantry 25, and the rotor 32 that receives the wind by following the wind direction 30 according to the control of the control shaft 19 is made to face the rotor. And made me follow the wind direction.

The wind direction rudder 26 is installed on the gantry 25 so as to be interlocked with the wind direction sensor encoder 29.

A blind plate is attached to the wind blow-through portions of the mirror surface portions above and below the control frame 14 for effective use.

The blade angle conversion point is the blade angle conversion groove 17 rack 16 of the control frame 14 and the roller 4 of the collective portion 1 completely exits the guide portion 20 and simultaneously the small gear 3 meshes with the rack 16 and moves. At the same time, the small gear 3 disengages the rack 16 and at the same time the roller 4 delivers the entrance assembly 1 to the guide 20 to maintain the blade angle while passing through the guide 20 and take wind action. Increased the number of wings.

The upper and lower control frames 14 are combined into a single control frame fixing rod 15 and are involved in the control action.

When blades of the same blade angle are fixed on the circumference, the rotational wind speed that can be used in the rotation direction and the rotation angle blade that cannot be used in the rotation direction will be reduced. The rotation angle blades that can be used in the same direction contributed to the improvement of the wind receiving rate.

A three-dimensional side view of the wing 2 and a side view from the upper side having the functions of the wing tip fixing bracket 6 roller, the 4-shaft, the 5-row case 8 and the ridge 7 at the collecting portion 1 at both ends of the wing. Sectional drawing. FIG. 3 is a three-dimensional view of the rotor shaft 9 and the rotor shaft end portion 10 of the driving shaft 12 blade mounting hole 11 in a three-dimensional side view obliquely above the rotor. Control frame fixing bracket 13 Control shaft 19 Rack 16 Blade angle conversion groove 17 Driving shaft through hole 18 Control frame fixing rod 15 and three-dimensional side view from above with functions of blade angle holding guide 20. FIG. 3 is a side view of a three-dimensional completed view from above of a wind direction 30 control bearing 21 and a driving bearing 22 in a variable wing type Darius complete drawing. The solid side view of the azimuth | direction detection axis | shaft 27 and an anemometer. The three-dimensional explanatory drawing from diagonally above the variable wing type Darius wind receiving situation. A three-dimensional view from above the wing 2 and a three-dimensional side view from diagonally above the wing 2.

Explanation of symbols

1 assembly 2 wing 3 small gear 4 roller
5 shaft 6 fixing bracket 7 strip 8 strip case 9 rotor frame 10 driving shaft end 11 mounting hole 12 driving shaft 13 control frame fixing bracket 14 control frame 15 control frame fixing rod 16 rack 17 blade angle conversion groove 18 driving shaft through Hole 19 Control shaft 20 Guide portion 21 Control bearing 22 Drive bearing 23 Control motor joint 24 Load coupling joint 25 Mounting base 26 Wind direction rudder 27 Direction detection shaft 28 Anemometer base 29 Encoder
30 wind direction 31 rotation direction 32 rotor

Claims (12)

  An electrical company product system is used to enable control following the control frame in the wind direction.The outline of the control system is to use an external power source or a private power source for the system power supply, detect the wind direction, convert it to a voltage output signal, and After determining the rotation direction and processing the program parameters by the position control device, the drive control signal is converted and the operation motor is controlled and driven by the conversion drive device, and the shaft 19 controls the control frame 14 in the wind direction. A control device for detecting position information with a sensor and causing the drive control device to follow the feedback wind direction.   The control frame 14 does not rotate, controls the wind direction, and is set to face, change the blade angle, and maintain the blade angle conversion groove 17 and the rack 16 having a size necessary for blade angle conversion of the rotor equally spaced blade 2. Installed device.   The control frame 14 is a device that can hold the gap between the guides 20 by attaching a rack 16 that can have the same curvature as the guide 20 control frame 14 and the wing 2 to a positive rotation vector angle to the vertical control frame 14 with a fixing bracket 13.   The rotor frame 9 is an apparatus in which the upper and lower sides of the rotor frame 9 are one body with a shaft 12, and a plurality of equally spaced blades 2 are arranged in a free state to form a rotor.   The blade 2 is a blade angle conversion groove 17, the collecting portion 1 is attached to both blade tips by the attachment gear 3 and the rack 16, and the blade angle is converted into a positive rotation vector angle. A device in which a coil-shaped ridge 7 is attached to a ridge case 8 as a corner holding and safety device.   The wind receiving body made of the rotor 32 attached to the control frame 14 blade 2 is attached to the mount 25 and installed in a horizontal place where the wind condition is good, and can be used as a power source such as a generator.   A device in which the control frame 14 is installed on the top of the pedestal 25 by the drive control servo motor-2 and follows the wind direction according to the control of the control shaft 19 so as to face each other.   The wind direction pedestal pedestal 28 is mounted on the gantry 25, and the direction rudder and the wind direction detection shaft 27 are linked to each other, and the wind direction 30 is linked to the detection encoder 29.   A device that effectively uses the wind by attaching a blind plate to the wind blow-off portions of the mirror surface portions above and below the control frame 14.   A control frame 14 is a device that attaches a rack 16 capable of making the blade 1 to have a positive rotation vector angle with the same curvature of the guide 20 and attaches it to the vertical control frame 14 with a fixing bracket 13 so as to maintain the distance between the guides 20.   The blade angle conversion point is the upper blade angle conversion groove 17 rack 16 of the control frame 14, and the roller 4 of the collecting portion 1 completely exits the guide portion 20, and at the same time, the small gear 3 meshes with the rack 16, and the predetermined blade At the same time when the small gear 3 is converted into a corner and the rack 16 is released, the roller 4 enters and transfers to the guide 20 and the operation is completed, and the guide passing blade 2 receives wind.   The wing 2 attached to the rotor 32 is a device of the wing 2 that has a simple structure with a shape that is easy to receive wind and has low airflow resistance.

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