JPH08240U - Wind turbine - Google Patents

Abstract

(57) [Abstract] [Purpose] It is difficult to be affected by the instantaneous change of wind speed, and the installation place can be selected relatively freely.
Provide a wind turbine that is easy to assemble and maintain. [Structure] Each of the semi-cylindrical wind-receiving members 16 is provided at a plurality of equal points on the circumference around one vertical rotation axis 3.
The wind turbine assembly 1 in which the semi-cylindrical open portion is erected vertically so that the semi-cylindrical open portion points in the same direction of the circumferential tangent line, and the main portion of the wind turbine assembly 1 is constructed in a disassembled and assembled manner by bolt connection or the like, and the pillar 2 and the center are arranged. The upper and lower parts of the vertical rotary shaft 3 are rotatably supported by bearings 10 and 11 in a support frame structure composed of a support frame 8, an upper frame 6 and a lower frame 9, and the rotary shaft 3 is driven by, for example, a generator 18. The gear wheel 19 for the vehicle was fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wind turbine, and particularly to a wind turbine suitable for a wind turbine generator.

[0002]

[Prior art]

 In recent years, widespread use of natural energy such as wind power, water power, and solar rays has attracted attention as one of the energy problems that have been increasing, and various power devices and power generation devices have been proposed and developed.

Among these, for wind power generation, various wind power generators of considerably large capacity have already been actually constructed and tested.

[0004]

[Problems to be solved by the device]

 However, most of this type of wind power generator is a two-blade propeller type that has a horizontal axis of rotation and rotates in a vertical plane, and has a considerably large diameter in order to increase its power generation capacity. However, because of this, the total height of the supporting device at the center becomes extremely large, and the manufacturing / construction / maintenance cost including the problems of its structure, strength, maintainability, etc. becomes large, and its installation location is also restricted. There were difficulties. In addition, since the inertial moment of the rotating part is relatively small in comparison with the large size, there was a tendency that the rotational speed and torque were likely to fluctuate due to instantaneous changes in the wind speed.

The present invention has been made in consideration of the conventional situation such as the wind power generation as described above, and is not easily affected by the instantaneous change of the wind speed, and the manufacturing / transportation / assembly / maintenance cost is relatively low. , The purpose is to provide a wind power generator suitable for a power generator with less restrictions on the installation location.

[0006]

For this reason, in the present invention, the semi-cylindrical wind receiving members are respectively provided at a plurality of equal points on the circumference around one vertical rotation axis. The main part of the wind turbine assembly, in which the cylindrical open part is erected vertically so as to be oriented in the same direction as the circumferential tangent line, is constructed as a disassembled assembly type, and the upper and lower parts of the vertical rotary shaft are attached to the support frame structure. By constructing this wind power engine so as to support each of them, the above-mentioned object is to be achieved.

[0007]

[Action]

 With this configuration, the wind turbine prime mover is designed so that the semi-cylindrical wind bearing members rotate horizontally around the vertical axis of rotation, so the overall height can be designed to be relatively low, and the rotational inertia Since the moment is relatively large, it is less susceptible to instantaneous changes in wind speed due to its flywheel effect. Furthermore, since the main structural parts are constructed as an assembly type, there is a large degree of freedom in selecting the installation location, and the manufacturing and transportation , Assembly and construction costs are low, it can be installed on the roof of a building, for example, and maintenance is easy because of its low height above the ground and floor.

[0008]

【Example】

 The present invention will be described below based on embodiments. FIG. 1 shows a schematic sectional view of an embodiment of a power generator using a wind turbine according to the present invention, and FIG. 2 shows a top view thereof.

(Windmill Configuration) Since this example shows a state of being installed on the ground surface (GL) or the floor surface (FL), the wind turbine (hereinafter simply referred to as “windmill”) 1 has an opposite diameter. The inside of eight columns 2 arranged in an equilateral octagonal shape of D is configured to rotate in the horizontal plane around one vertical rotation axis 3. Each of the columns 2 is provided with a reinforcing column 4 on the outside thereof. The columns 2 and 4 are fixed on each of the foundation concrete 5 on the ground surface GL or the floor surface FL, and the tops of the columns 1 are adjacent to each other. The upper framework 6 is constituted by the framework members 6a and 6b that interconnect the pillars and the diameter-opposed pillars, respectively.

On the other hand, a central support frame 8 having an appropriate height is formed on the foundation concrete 7 on the ground surface GL at the center of the octagon formed on each of the pillars 1, and the top including the top thereof is also included. A lower framework 9 is formed by each framework member similar to that of the rectangular framework 6.

An upper bearing 10 and a lower bearing 11 are arranged at the central portions of the upper frame 6 and the lower frame 9, respectively, to support the rotary shaft 3 of the wind turbine 1, and the lower bearing 11 has It is configured to have a thrust bearing function for supporting the weight of the wind turbine 1.

The wind turbine 1 has respective upper / lower rotating members 12/13 radially extending from the vertical rotating shaft 3 at an angle of 8 equal to each other, and the tips of the respective members 12, 13 are annular members 14. The pair of upper / lower rotating members 12/13 corresponding to the upper and lower sides are rigidly reinforced by the reinforcing members 15 as diagonal members arranged in the X shape.

A semi-cylindrical wind-receiving member 16 having a semi-circular cross section is formed on the inner side of each annular member 14 between the pair of upper / lower rotating members 12/13 corresponding to the upper and lower sides. The cylindrical open parts are vertically arranged and fixed so as to be oriented in the same direction of the circumferential tangent line of the wind turbine 1, and vertical plate-shaped straightening plates 17 are provided at both vertical side ends of the semi-cylindrical open part and in the center thereof. Further, a rectifying plate 17a slightly wider than the rectifying plate 17 is fixedly provided near the small distance center of the inner vertical side end. The upper and lower ends of each wind receiving member 16 are formed into slopes by each semicircular plate 16a. It should be noted that each of the vertical straightening vanes 17 and 17a may be provided with a plurality of horizontal horizontal straightening vanes (not shown).

Each of the above-mentioned main components is constructed by an angled steel (steel angle) or steel plate material as an assembly type by bolt connection, so that disassembly, transportation, assembly, maintenance, etc. are easy. Is intended.

(Operation) With the above-described configuration, when wind is received from the direction shown by the arrow W in FIG. 2, the wind turbine 1 has a large dynamic pressure on the inner surface of the half cylinder of each wind receiving member 16 on the left side of the drawing. On the other hand, on the right side of the figure, since the wind resistance is small due to the smooth outer circumference of each semi-cylindrical part, the wind turbine 1 rotates in the direction of arrow A due to the rotational force generated by the difference in the wind resistance value on the left right side described above. To occur. In addition, since this wind turbine has a relatively large rotational moment of inertia due to its structure, a large flywheel effect can be expected, and once it starts rotating, it has the advantage that it is unlikely to be affected by instantaneous changes in wind speed.

(Power Generator) In order to transmit the power of the wind turbine 1 to the pair of generators 18 mounted on the lower frame 9, the lower part of the rotary shaft 3 of the wind turbine 1 is concentrically large as a drive element. A gear 19 is fixedly installed, and speed-increasing small gears (pinions) 20 meshing with the large gear 19 are attached to separate shafts at the diametrically opposed positions. Another large gear is integrally fixed to the lower portion of each of these pinions 20, and the spur gear is increased by two steps so as to drive each second pinion fixed to each of the other shafts. Each of the generators 18 is configured to be accelerated by the rotational force of the second pinion shaft.

In order to adjust the speed of the generator 18 depending on the wind speed of the wind W and the load of the generator 18, for example, the upper and lower annular members 14 of the wind turbine 1 are forcibly sandwiched as members to be braked. A braking mechanism can be provided, and it can also be used to stop the rotation of the wind turbine during maintenance and inspection of this device.

(Example of Prototype) The wind turbine generator having the above-described configuration is used for the outer frame diameter D = 6.06 m and the total height H = 6. As a result of actually making a prototype with a size of 0 m and a wind turbine height h = 2.6 m, measuring the stationary rotating torque of the wind turbine and performing a rotation test with a large fan, the practicality was confirmed.

Other Embodiments In the above embodiment, the example in which the eight wind receiving members 16 are used in the wind turbine 1 has been described. The present invention is not limited to this, and various modifications can be adopted.

Further, in this embodiment, an example of driving the pair of generators 18 is shown, but it can be used not only as the generators but also as a prime mover for other general power working machines, and an additional It goes without saying that the deceleration mechanism can also adopt various types.

[0021]

[Effect of device]

 As described above, according to the present invention, the plurality of semi-cylindrical wind-receiving members are arranged on the equally divided circumference of the wind turbine and are configured to rotate in the horizontal plane about the vertical rotation axis. , A relatively large flywheel effect can be expected, the overall height is relatively low, and the main structure part is constructed as an assembly type, so it is possible to select the installation place relatively freely, and in terms of production, transportation, assembly and maintenance. It is extremely advantageous.

[Brief description of drawings]

FIG. 1 is a schematic side view of an embodiment of a power generator using a wind turbine of the present invention.

FIG. 2 is a top view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wind turbine 3 Vertical rotating shaft 2-9 Support frame structure 4 Support 6 Upper framework 8 Central support framework 9 Lower framework 10, 11 Bearing 16 Wind receiving member 18 Generator 19 Large gear (driving element)

Claims (1)

[Scope of utility model registration request] 1. A semi-cylindrical wind-receiving member is provided at each of a plurality of equal points on a circumference centered on one vertical rotation axis.
A semi-cylindrical open portion having a predetermined distance from the vertical rotation axis is vertically erected so as to be oriented in the same direction of the circumferential tangent line, and a main part of the wind turbine assembly is disassembled and assembled. A wind power engine, wherein upper and lower portions of the vertical rotation shaft are pivotally supported by a support framework structure, and a power unit drive element is fixedly mounted on the vertical rotation shaft.