JPS58192977A - Aerogenerator having ascending and descending construction - Google Patents

Abstract

PURPOSE:To facilitate to reduce stability factors in the strength of the device by a method wherein a construction, in which a wind mill and a generator are enabled to move up-and-down freely along a supporting tower so as to be capable of ascending and descending them to any requested height. CONSTITUTION:The main body 3 of an aerogenerator, having wings 2 and a generator 8, is provided to be capable of ascending and descending along a supporting tower 10, and generates electricity by elevating it to the high sky to receive wind at normal times while it is descended to the ground or a safe height beforehand to avoid a strong wind in case there is fear to receive a damage on the device by the strong wind or the like. According to this method, a structural strength capable of withstanding against the abnormal strong wind, is made unnecessary. The maintenance, inspection, repairing and the like of the device may be effected at a position near the ground, therefore, these works may be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a wind turbine power generation mechanism operated at the top of a tall support tower by making the wind turbine and the generator section freely movable up and down along the support tower. This invention relates to a wind power generator having a structure that allows it to be raised and lowered to a required altitude.

Now, as shown in Figure 1, a conventional wind power generation device has a tail 4, blades 2, and a power generator mounted on the top of a support tower 6, which is constructed of a sufficiently rigid steel frame that stands high vertically in the sky. The wind turbine generator main body 3 incorporating the machine 8 is the tail 4
The blade 2 is attached via a turning guide mechanism so that the blade 2 faces the wind direction 1 due to the wind pressure applied to the blade. However, the blades 2 always rotate opposite to the wind direction regardless of the wind direction, and the blades 2 transmit the rotational force to the generator to obtain electric power.

This wind power generation device has not only the blades 2 but also the tail 4, the wind turbine generator body 3 to which they are attached, and the turning guide so that the device will not be damaged by the wind pressure even in abnormally strong winds such as typhoons. The mechanisms 7, etc. have sufficient strength, and the support tower 6 that supports them has increased rigidity so as to be able to sufficiently withstand the wind pressure they receive, and its legs are made to have a structure that is wider than the top. Support tower 6
The stability against the plateau 5 was increased and the equipment was prevented from collapsing.

Additionally, conventional wind power generation facilities were generally constructed in areas with strong average wind speeds throughout the year, and construction in areas with weak annual average wind speeds was avoided.

The following is known as the reason. Let's consider constructing wind power generators with the same output in regions with weak winds and regions with strong winds. It is conceivable that wind power generators in regions with weak winds have a larger receiving area than those with strong winds, and are more vulnerable due to the weaker wind pressure. In this case, there will not be a huge difference in construction costs between the two. However, considering abnormally strong winds such as typhoons, conventional wind power generators are unable to shelter from the strong winds, and as a result, wind pressure of approximately the same intensity per unit area is applied to both of these systems, resulting in large equipment in areas with weak winds. Because they are larger, they are subject to greater wind pressure and are more easily damaged than those in areas with strong winds. In response to this, it is clear that in order to make these devices strong enough to withstand abnormally strong winds, the construction costs for devices in regions with weak winds will be extremely high compared to those in regions with strong winds. The above is a major reason why it is difficult to construct wind power generation equipment in areas where the average annual wind speed is low, and it is a fateful drawback.

As mentioned above, the conventional method is that the wind turbine generator main body 3 is attached to the top of a high support tower, so firstly,
In order to withstand abnormally strong winds such as during typhoons, a structure with extremely increased safety is required compared to the structural strength required during normal wind speeds, and the cost required to construct such a device is greater than this device. In many cases, it is not profitable compared to the value of the electricity generated.Secondly, for the same reason as the first point above, it is not profitable to construct equipment in areas where the average annual wind speed is relatively low. Thirdly, the equipment is always operated in harsh natural environments, and maintenance personnel must operate at high places where the mechanical parts of the equipment are located, with the accompanying risks each time. The downside is that they are forced to do this work, and there are limits to what they can do.

The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to reduce the strength safety factor of wind power generation equipment, thereby reducing construction costs, and to reduce the construction cost in areas where the annual average wind speed is relatively low. The purpose of the present invention is to provide a wind power generation device having an elevating structure, which makes it possible to construct the device economically.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 2, 3, 4, 5, and 6.

A sufficiently large fixed base 9 made of concrete and buried deeply and widely in the ground firmly fixes a support tower 10 made of reinforced concrete that stands tall and vertical and has sufficient rigidity to the plateau. The shape and structure of the support tower are commonly used as concrete utility poles. It has a smooth outer surface in the shape of a conical column-shaped centrifugal reinforced concrete pole or an equivalent shape that gradually tapers from the base to the tip. The support tower 10
A linear detent actuator 11 is fixed to the outer surface of the actuator in the vertical direction from the tip to the base.

A lifting platform 13 that surrounds the outer surface of the support tower 10 and can freely move up and down via four roller-shaped lifting wheels 12 is installed along the outer surface at the upper and lower ends of the wire rope 14.
The fish is lifted up via a pulley 15 attached to the top of the support tower 10 and a hoist 16 attached to the bottom. The lifting platform 13 is connected to the upper guide frame 1 as shown in FIG.
7. Three parts, the lower guide frame 18 and the cylinder 19, are integrated. The upper guide frame 17 and the lower guide frame 18 have almost the same shape, and as shown in FIGS. 4 and 5, are mutually slidable along two rows of grooves provided inside each. Two lifting wheel supports 20, each having two lifting wheels 12 facing each other, each have one lifting wheel support 20.
The support tower 10 is mounted so as to be clamped sufficiently strongly by the wheel push springs 21. Further, the two lifting wheel supports 20 are connected to two link guides 24 having guide grooves 23 and fixed to the outer surfaces of the upper guide frame 17 and the lower guide frame 18 by two link links 22 respectively. It is connected to a guide pin 25 that is movable along the guide groove, and therefore, each lifting wheel support 20 cannot slide independently, but always has two wheels depending on the thickness of the support tower 10. It is designed to slide symmetrically in the weak direction. As a result, the center line of the cylinder 19 is always on the center line of the support tower 10, regardless of changes in the thickness of the support tower 10 due to the vertical movement of the lifting platform. The cylinder 19
A single flange 26 of uniform thickness whose center line is the same as that of the cylinder is fixed to the outer surface of the cylinder 19.
A power generator driven through a vertical tail fin 4 at one end, a blade 2 at the other end, and its blade shaft, which can freely rotate via a turning wheel 27 along a turning track surface constituted by the outer surface and flange surface of the Attach the wind turbine generator main body 3 having the generator 8. The tail blade 4 rotates the wind turbine generator main body 3 on a horizontal plane along the turning orbital surface by the wind pressure applied to the surface thereof, so that the blade 2 always faces the wind direction 1. Further, the lifting platform 13 is connected to the locking track 11 by a pair of locking guides 28 provided on one of the lifting wheel supports 20.
Since it moves up and down while lightly pinching the support tower 10, the platform itself has a structure that prevents it from turning around the support tower 10 unnecessarily. On the other hand, the electrical output and control signals of the generator 8 are raised and lowered from a contactor (not shown) insulated and supported on the wind turbine generator main body 3 through a slip ring (not shown) insulated and supported on the outer periphery of the cylinder 19. It is transmitted to the base and also the lower guide frame 1
A current collecting overhead wire (not shown) insulated and supported in a concave surface provided in a detent track 11 is connected from a contactor (not shown) insulated and supported at 8.
(not shown) to the ground. From the above,
The wind power generator of the present invention has a structure in which the blades 2 are always opposed to the wind direction 1, and electric power is obtained from the generator 8 driven through the blade shaft.

That is, in the wind power generation device of the present invention, since the wind turbine generator main body 3 having the blades 2 and the generator 8 can be raised and lowered along the support tower 10, it is normally raised high in the sky to receive the wind and generate electricity. If there is a risk of damage to the equipment, such as when flying, the aircraft should be lowered to the ground or to a safe altitude in advance to avoid strong winds. As a result, when designing and manufacturing this device, there is no need to consider the structural strength to withstand abnormally strong winds, and construction costs can be significantly reduced compared to conventional devices. In addition to areas with strong annual average wind speeds that are limited to small areas,
The device can be constructed even in areas where the average annual wind speed is relatively weak, which occupies most of the country, and the effects of the present invention are significant.

In addition, equipment supplementary inspections and repairs can be carried out by lowering the wind turbine generator body 3, which contains the main mechanical parts of the equipment, close to the ground, making it much easier than conventional work at high places. Become something.

By employing the above structure, it is expected that wind power generators, which are inexpensive and easy to maintain, will be widely used as an inexhaustible energy source, and the effects thereof will be extremely large.

Regarding the lifting and lowering of the equipment, a device for detecting abnormally strong winds and a device for detecting abnormal vibrations are installed at the top of the support tower, and their output signals are guided to the control circuit of the hoisting machine 16 to detect abnormally strong winds. In the event of an earthquake or abnormal vibration of the support tower due to unbalance failure of the rotating parts of the equipment, the wind turbine generator body 3 is automatically lowered to a safe altitude to prevent equipment from collapsing or causing further damage. It is possible to prevent this.

Modifications of the first embodiment will be described below. Any modification or combination of these examples does not deviate from the effects of the present invention.

A second embodiment will be described with reference to FIG. The wind turbine generator main body 3 is driven by the wind pressure applied to the blades 2 or by the driving force of an electromechanical mechanism that is activated by instructions from a separately installed device that detects the wind direction, on a rotating track surface provided on the lifting platform 13. The blades 2 can be rotated around the support tower 10 along the wind direction so that the blades 2 are always facing the wind direction 1.

In the third embodiment, the support tower is shaped like a square pyramid. Similarly, the support tower 10 is not limited to a conical shape or a quadrangular pyramid shape, but can also have any polygonal pyramid shape.

As a fourth embodiment, in the first embodiment, a combination of a wireless rope 14, a pulley 15, and a hoist 16 was used to drive the lifting platform 13 up and down. It is possible to use any lifting drive device, such as an applied mechanism.

[Brief explanation of the drawing]

FIG. 1 is a three-dimensional diagram showing an example of a conventional wind power generation device.
Fig. 2 is a perspective view showing the first embodiment of the present invention, Fig. 3 is a perspective view of the elevating platform of the first embodiment, Fig. 4 is a plan view of the elevating platform of the first embodiment, and Fig. 5 is a perspective view of the elevating platform of the first embodiment. A- in the above figure 4 of the upper guide frame part
FIG. 6 is a partially sectional three-dimensional view of the turning mechanism of the first embodiment, and FIG. 7 is a perspective view of the second embodiment. DESCRIPTION OF SYMBOLS 1...Wind direction, 2...Blade, 3...Wind turbine generator body, 4...Tail, 5...Plateau, 6...Support tower, 7...
... Turning guide mechanism, 8... Generator, 9... Fixed base, 10... Support tower, 11... Detent track, 12...
... Lifting wheel, 13... Lifting platform, 14... Wire rope, 15... Pulley, 16... Hoisting machine, 17...
・Upper guide frame, 18...Lower guide frame, 19...Cylinder, 20...Elevating wheel support, 21...Wheel push spring, 22...Connection, 23...Guiding groove, 24... Link guide, 25... Guide pin, 26... Flange,
27... Turning wheel, 28... Rotation prevention guide. Patent applicant Takanobu Fukuoka

Claims (1)

[Claims] In a wind power generation device in which the blades 2 are made to face or behind the wind direction by the tail blade 4 or an electromechanical mechanism, and the revolving force of the blades 2 is used as the rotational force of the generator 8, a smooth outer surface or orbital surface in the vertical direction is used. A support tower 10 having a conical or polygonal pyramid shape, an elevator platform 13 that can be moved up and down along the outer surface or track surface of the support tower, and a platform that rotates around the elevator platform on a horizontal plane via a rotation guide mechanism. The main body 3 of the wind turbine generator has blades 2 and a generator 8 that can be fixed at an arbitrary height along the support tower 10 or can be raised and lowered. Features of wind power generation equipment.