JP2007270683A - Wind-power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To absorb vibration transmitted to a column while easily locating the column to support a wind mill in the wind-power generation device. <P>SOLUTION: An inside rod member assembly 11 comprises seven iron rods 21 and upper are bundled by steel bands 27 in the vicinity of the upper end portions. The 12 pieces iron rods 24 which constitute an interlinked iron rod member assembly 14 are bundled by the steel bands 25 at the vicinity of the upper end portions together with a lower end portion vicinity of the seven pieces iron rods 21. The middle of the 12 pieces of iron rods 24 is sandwiched by the seven pieces of iron rods 22 composing the inside rod member assembly 11 and the 12 pieces of iron rods 23 composing a fixed rods member assembly 13. The 12 pieces of iron rods 23 are bundled by a steel band 26 together with the seven pieces of iron rods 22 and the 12 pieces of iron rods 24. The bottom end of the 12 pieces of iron rods 24 is fixed to the ground plane G. The vibration transmitted to the column 4 is absorbed by friction among neighboring iron rods 21-24. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wind turbine generator that generates power by rotating a windmill.

  Some wind turbine generators that generate electricity by rotating a windmill are provided with a support to fix the windmill. For example, in the wind turbine generator described in Patent Document 1, the windmill is installed on a tower (support), and the windmill is supported by the tower.

Japanese Patent Laying-Open No. 2005-344626 (FIG. 1)

  However, in the wind turbine generator described in Patent Document 1, vibration is generated in the windmill due to rotation of the windmill, and this vibration is transmitted to the tower. Therefore, it is necessary to make the tower large enough to withstand this vibration. When a tower becomes large, its weight also increases, making it difficult to install depending on where it is installed. Further, for example, when the wind power generator is installed on a building or the like, there is a possibility that the vibration of the windmill transmitted to the tower is further transmitted to the building and a low frequency is generated in the building.

  The objective of this invention is providing the wind power generator which can be easily installed and can absorb the vibration of the windmill transmitted to the support | pillar.

Means for Solving the Problems and Effects of the Invention

  A wind turbine generator according to the present invention includes a windmill that receives wind to rotate, a rotating shaft that rotates together with the windmill, a support that supports the windmill and the rotating shaft, and a generator that generates power by rotating the rotating shaft. However, it is provided with a plurality of bar members extending in the vertical direction and one or a plurality of bundling members for bundling the plurality of bar members, and at least one of the plurality of bar members is fixed to the installation surface.

  According to this, since a support | pillar is comprised by bundling a comparatively lightweight rod member with a binding member, installation of a support | pillar can be performed easily. Moreover, even if the vibration of the windmill is transmitted to the support column, the vibration is absorbed by the friction generated between the adjacent rod members, so that the transmission of vibration from the support column to the installation surface can be suppressed. On the contrary, even when the installation surface vibrates and the vibration is transmitted to the column, the vibration is absorbed by the friction between the adjacent rod members, so that the vibration is transmitted to the rotating shaft and the windmill. Can be prevented from becoming a failure factor.

  Further, in the wind turbine generator of the present invention, the struts are disposed so as to surround the inner bar member assembly composed of a plurality of bar members disposed in a region including the center of the strut, and the inner bar member assembly. A fixed bar member assembly fixed to the installation surface, an inner bar member assembly, a plurality of bar members bound together with the inner bar member assembly by a binding member, and a fixed bar member assembly surrounded by a binding member And a plurality of bar members that are bound together with the fixed bar member aggregate, and may include a connecting bar member aggregate that connects the inner bar member aggregate and the fixed bar member aggregate. According to this, the inner rod member assembly, the fixed rod member assembly, and the fixed rod member assembly are connected by the connecting rod member assembly to form the support column, thereby forming the inner rod member assembly, the fixed rod member assembly, and the connecting rod member assembly. The vibration can be efficiently absorbed by the friction generated between the plurality of rod members constituting the.

  In the wind power generator of the present invention, the plurality of inner rod member assemblies are arranged apart from each other along the vertical direction, and at least one of the plurality of rod members constituting the connecting rod member assembly. Are bundled together with two or more of the plurality of inner bar member assemblies at different positions, and the uppermost inner bar member assembly is not surrounded by the connecting bar member assembly In the region, the binding member or the rotating shaft may be bound by a fixing member for fixing the rotating shaft to the support column. According to this, since a gap is formed between the plurality of inner bar member assemblies, the weight of the support can be reduced.

  Further, in the wind power generator of the present invention, the plurality of rod members constituting the connecting rod member aggregate are arranged such that the upper end is located upward as the rod member is located inward with respect to the center of the column. And a plurality of rods constituting a connecting rod member aggregate in which a part of the plurality of rod members constituting the coupling rod member assembly is located inside the center of the column with respect to the plurality of rod members by the binding member It may be bundled together with a part of the member and the inner bar member assembly. According to this, the support | pillar can be made high when the some rod member which comprises a connection rod member aggregate | assembly binds together.

  In the wind power generator of the present invention, at least one lower end of a plurality of bar members which constitute the innermost bar member aggregate located in the lowermost part may be fixed to the installation surface. According to this, since the column is supported by the rod member constituting the innermost rod member assembly located at the lowermost position together with the fixed rod member assembly, the rod member fixed to the installation surface and the installation surface The friction surface with the non-fixed rod member can be formed on the inner side and the outer side of the support column, that is, the area of such a friction surface is increased. In such a friction surface, a larger friction is generated than the friction surface between the rod members not fixed to the installation surface, so that vibration can be efficiently absorbed.

  In the wind power generator of the present invention, the plurality of rod members may be constituted by hollow pipes. According to this, since a bar member becomes still lighter because the bar member is comprised with the hollow pipe, installation of a support | pillar can be performed still more easily.

  Moreover, in the wind power generator of this invention, the support | pillar may further be provided with the supporting member which supports an inner side bar member assembly. According to this, since the inner bar member assembly is supported by the support member, the inner bar member assembly is prevented from falling out of the connecting bar member assembly.

  In the wind power generator of the present invention, at least one of the plurality of bar members constituting the inner bar member assembly may be fixed to the installation surface. According to this, since the column is supported by at least one of the bar members constituting the inner bar member aggregate together with the fixed bar member aggregate, the bar member fixed to the installation surface is fixed to the installation surface. The friction surface with the rod member that is not formed can be formed on the inner side and the outer side of the column, that is, the area of such a friction surface is increased. In such a friction surface, a larger friction is generated than the friction surface between the rod members not fixed to the installation surface, so that vibration can be efficiently absorbed.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a schematic configuration diagram of a wind turbine generator according to the present embodiment.

  As shown in FIG. 1, the wind turbine generator 1 includes a windmill 2 that rotates by receiving wind, a rotating shaft 3 that rotates together with the windmill 2, a support 4 that supports the windmill 2 and the rotating shaft 3, and rotation of the rotating shaft 3. And a generator 5 for generating electricity. The windmill 2 is a vertical axis type windmill installed near the upper end portion of the rotating shaft 3 extending in the vertical direction. The rotating shaft 3 is supported by the support column 4 via a fixing member (U-bolt) 6. The generator 5 is, for example, a three-phase AC generator.

  Next, the support | pillar 4 is demonstrated in detail using FIGS. 1-3. FIG. 2 is a plan view of the support column 4 of FIG. 1 when viewed from the direction of arrow II (in plan view). 3 is a cross-sectional view taken along line III-III in FIG. As shown in FIGS. 1 to 3, the support column 4 includes two inner bar member assemblies 11, 12, a fixed bar member assembly 13, and a plurality of iron bars (bar members) 21 to 21 that constitute a connecting bar member assembly 14. 24 and steel bands (binding members) 25 to 27 for binding the iron bars 21 to 24.

  The inner bar member assembly 11 includes seven iron bars 21 extending in the vertical direction and arranged in the vicinity of the center of the support column 4 (a region including the center) in a plan view. The seven iron bars 21 have the same length and are arranged at the same position in the vertical direction. In addition, seven iron bars 21 are arranged at a substantial center of the support column 4 in plan view, and the remaining six bars are arranged so as to surround the iron bar 21. The seven iron bars 21 are bound by a steel band 27 in the vicinity of their upper ends. Further, a fixing member 6 is attached to a portion of the inner bar member assembly 11 that is close to the portion bound by the steel band 27, and the fixing member 6 supports the rotating shaft 3. That is, the inner bar member assembly 11 supports the rotating shaft 3 via the fixed member 6. Here, the fixing member 6 also binds the vicinity of the upper end portions of the seven iron bars 21 constituting the inner bar member assembly 11 together with the steel band 27.

  The inner bar member assembly 12 is disposed below the inner bar member assembly 11 and spaced from the inner bar member assembly 11. The inner bar member assembly 12 is composed of seven iron bars 22 extending in the vertical direction. The seven iron bars 22 have the same length and are arranged at the same position in the vertical direction. The seven iron bars 22 are arranged at the same position as the seven iron bars 21 in plan view.

  The fixed bar member assembly 13 has twelve iron bars 23 extending in the vertical direction. The twelve iron bars 23 have the same length and are formed at the same position in the vertical direction. Further, the twelve iron bars 23 are arranged so as to surround the inner bar member assemblies 11 and 12 and the fixed bar member assembly 13 in a plan view. Further, the lower ends of the twelve iron bars 23 are fixed to the installation surface G.

  The connecting rod member assembly 14 includes twelve iron bars 24 extending in the vertical direction. The twelve iron rods 24 surround the vicinity of the lower end portion of the inner bar member assembly 11 in the vicinity of the upper end portion thereof, and the steel band 25 binds the twelve iron rods 24 together with the seven iron rods 21 in this portion. ing. The twelve iron bars 24 surround the inner bar member assembly 12 in the middle in the vertical direction, and this part is surrounded by the iron bars 23 constituting the fixed bar member assembly 13. In this part, the binding member 26 binds the 12 iron bars 23 together with the seven iron bars 22 and the 12 iron bars 24. That is, the twelve iron bars 24 are bound together by the binding members 25 and 26 together with the two inner bar member assemblies 11 and 12 at different positions. Here, the lower ends of the twelve iron bars 24 extend to the vicinity of the installation surface G, but the lower ends of the iron bars 24 are in contact with the installation surface G, or a slight gap is formed between them. The lower end of the iron bar 24 is not fixed to the installation surface G. This makes it difficult for vibration of the iron bar 24 to be directly transmitted to the installation surface G. The twelve iron bars 24 surround the inner bar member assemblies 11 and 12 of the present invention, and a plurality of bar members bound together with the inner bar member assemblies 11 and 12 by the binding members 25 and 26, and a fixed bar member It is also surrounded by the assembly 13 and serves as a plurality of rod members that are bound together with the fixed rod member assembly 13 by the binding members 25 and 26.

  Here, the inner side rod member aggregates 11 and 12 are supported by a wire or the like (support member) (not shown). This prevents the connecting rod member assembly 14 from falling off.

  As described above, the support column 4 is formed by binding the relatively light iron bars 21 to 24 by the steel bands 25 to 27, and the inner bar member assemblies 11, 12, the fixed bar member assembly 13, and the connecting bar member assembly. Since it is formed by the body 14, the column 4 can be easily installed.

  In such a wind turbine generator 1, when the windmill 2 rotates, vibration is generated in the windmill 2 in the horizontal direction, and when the vibration is transmitted to the column 4, the iron bars 21 to 24 are slightly shifted in the circumferential direction, and adjacent to each other. Friction in the torsional direction is generated between the iron bars 21 to 24. Vibration is absorbed by this friction, and further transmission of vibration to the installation surface G is suppressed. Alternatively, when the windmill 2 rotates, vibration is generated in the windmill 2 and the vibration is transmitted to the support column 4, so that the iron rods 21 to 24 are slightly displaced in the extending direction (vertical direction in FIG. 3), and the adjacent iron rod 21 Between ˜24, friction in the extending direction occurs.

  Conversely, even when an earthquake occurs and vibration is generated on the installation surface G and the vibration is transmitted to the support column 4, the vibration is generated by friction generated between the adjacent iron bars 21 to 24 as described above. Therefore, the vibration is further suppressed from being transmitted to the rotating shaft 3 and the windmill 2, and it is possible to prevent the rotating shaft 3 and the windmill 2 from being adversely affected.

  At this time, since the inner bar member assembly 11 and the inner bar member assembly 12 are spaced apart from each other, vibration is not directly transmitted from the inner bar member assembly 11 to the inner bar member assembly 12. 4 can absorb vibrations efficiently.

  According to the embodiment described above, the inner rod member assemblies 11, 12, the fixed rod member assembly 13, and the connection formed by binding the relatively lightweight steel rods 21-24 with the steel bands 25-27. Since the support | pillar 4 is formed of the rod member aggregate | assembly 14, the support | pillar 4 can be easily installed with a disjoint stick member. Even if the vibration of the windmill 2 is transmitted to the support column 4, the vibration is absorbed by the friction generated between the adjacent iron bars 21 to 24, so that the transmission of vibration from the support column 4 to the installation surface G is suppressed. be able to. On the contrary, even when the installation surface G vibrates and the vibration is transmitted to the support column 4, the vibration is absorbed by the friction between the adjacent iron bars 21 to 24, so that the vibration adversely affects the rotating shaft 3 and the windmill 2. Can be prevented.

  Moreover, since the inner bar member assembly 11 and the inner bar member assembly 12 are arranged apart from each other, the weight of the support can be reduced.

  Next, modified examples in which various changes are made to the present embodiment will be described. However, components having the same configuration as in the present embodiment are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  In one modification, as shown in FIG. 4, an inner bar member assembly 52 is disposed below the inner bar member assembly 12. The inner bar member assembly 52 is composed of a plurality of iron bars 63, and the plurality of iron bars 63 are disposed in the central space of the same column 50 as the plurality of iron bars 21 and the plurality of iron bars 24 in plan view. In addition to the plurality of iron rods 24, the connecting rod member aggregate 51 is disposed outside the plurality of iron rods 24 with respect to the center of the support 50, and the upper end thereof is positioned below the upper ends of the plurality of iron rods 24. A plurality of iron bars 61 are provided, and the vicinity of the upper ends of the plurality of iron bars 61 is bound together with the steel bands 66 together with the vicinity of the lower ends of the plurality of iron bars 22 and the plurality of iron bars 24. Further, intermediate portions of the plurality of iron rods 61 in the vertical direction are sandwiched between the plurality of iron rods 63 and the plurality of iron rods 62 constituting the fixed rod member assembly 54, and the plurality of iron rods 62 are connected to the plurality of iron rods 61, Bundled together with a steel band 65 together with 63. And the lower end of the some iron bar 62 is being fixed to the installation surface G (modification 1). In this case, the height of the support 50 can be increased, and the area of the portion where friction between the iron bars is increased by the amount provided with the iron bars 61 to 63, so that the vibration is absorbed more efficiently in the support. can do. In the first modification, the plurality of iron bars 24 surround two of the three inner bar member assemblies 11, 12, 52 of the present invention (inner bar member assemblies 11, 12), and the binding member 25. , 66 are a plurality of bar members bundled together with the inner bar member assemblies 11, 12. A plurality of iron bars 61 surround the inner bar member assembly 52 of the present invention, and are surrounded by a plurality of bar members bound together with the inner bar member assembly 52 by a binding member 65 and the fixed bar member assembly 54, It also serves as a plurality of bar members bound together with the fixed bar member aggregate 54 by the binding member 65.

  In another modification, as shown in FIG. 5, one (iron bar 81a) disposed at the center of the seven iron bars 81 constituting the inner bar member assembly 72 located at the lowest position extends downward. The lower end is fixed to the installation surface G (Modification 2). In this case, since the pillar 70 is supported by the iron bar 81a in addition to the twelve iron bars 23, the friction surface between the iron bar fixed to the installation surface G and the iron bar not fixed to the installation surface G is a pillar. Between the iron bar 23 on the outside of the column 70 fixed to the installation surface G and the iron bar 81a on the inside of the column 70, and other iron bars not fixed to the installation surface G. There is a friction surface. In such a friction surface, a larger friction is generated than a friction surface between rod members that are not fixed to the installation surface G, so that vibration can be absorbed efficiently. In Modification 2, only the lower end of one of the seven iron bars 81 (iron bar 81a) is fixed to the installation surface G, but two or more lower ends of the seven iron bars 81 are on the installation surface G. It may be fixed. Further, the iron bar 81 a may extend further upward and be integrated with one of the iron bars 21 constituting the inner bar member assembly 11. Here, in the case of the first modification, one of the iron bars 63 constituting the inner bar member assembly 52 extends downward and is fixed to the installation surface G, and extends upward to extend the inner bar. It may be integrated with one of the iron bars 22 constituting the member assembly 12, may extend further upward than this, and may be integrated with the iron bar 21 constituting the inner bar member assembly 11. . As described above, it is only necessary that at least one of the plurality of bar members constituting the inner bar member assembly is fixed to the installation surface. Further, the iron bar penetrating the plurality of inner bar member assemblies in the vertical direction may be thinner than the other iron bars.

  In another modification, as shown in FIG. 6, the support column 90 is configured using hollow iron pipes 91 to 94 instead of the iron bars 21 to 24 (Modification 3). Even in this case, the vibration generated in the windmill 2 and transmitted to the support 90 by friction between the adjacent iron pipes 91 to 94 and the vibration generated on the installation surface G and transmitted to the support 90 are absorbed. Can do. Furthermore, since the iron pipes 91 to 94 are hollow and are lighter than the iron bars 21 to 24 of the embodiment, the column 90 can be installed more easily.

  In the present embodiment and the first to third modifications, the vicinity of the upper ends of the seven iron bars 21 (seven iron pipes 91) are bound by the steel band 27. However, these are bound by the steel band 27. Instead, they may be bound only by the fixing member 6.

  Moreover, in this Embodiment, although the support | pillar 4 was comprised using 7 iron bars 21 and 22 and 12 iron bars 23 and 24, the number of iron bars is not restricted to this.

  Moreover, in this Embodiment, the seven iron rods 21 and the seven iron rods 22 are separate, and each constitutes the inner bar member assemblies 11, 12, but the seven iron rods 21 are downward. It may extend and be integrated with seven iron bars 22 to constitute one inner bar member assembly.

  In the present embodiment, the windmill 2 is a vertical axis type windmill, but is not limited thereto, and may be a propeller type windmill.

It is a schematic block diagram of the wind power generator which concerns on embodiment in this invention. It is a top view when FIG. 1 is seen from the direction of arrow II. It is the III-III sectional view taken on the line of FIG. FIG. 10 is a cross-sectional view corresponding to FIG. FIG. 10 is a cross-sectional view corresponding to FIG. FIG. 10 is a plan view corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wind power generator 2 Windmill 3 Rotating shaft 4 Strut 5 Generators 11 and 12 Inner bar member aggregate 13 Fixed bar member aggregate 14 Linking bar member aggregates 21-24 Steel rods 25-17 Steel band 50 Strut 51 Connecting rod member aggregate Body 52 Inner bar member assembly 54 Fixed bar member assemblies 61-63 Iron bar 70 Post 81 Iron bar 90 Posts 91-94 Iron pipe

Claims (8)

A windmill that rotates in response to the wind,
A rotating shaft that rotates with the windmill;
A column supporting the windmill and the rotating shaft;
A generator for generating electricity by rotation of the rotating shaft,
The strut is
A plurality of bar members extending in a vertical direction;
One or a plurality of binding members for binding a plurality of the rod members,
A wind turbine generator, wherein at least one of the plurality of rod members is fixed to an installation surface. The strut is
An inner bar member assembly composed of a plurality of the bar members arranged in a region including the center of the column;
A fixed bar member assembly composed of a plurality of the bar members arranged to surround the inner bar member assembly and fixed to the installation surface;
A plurality of the bar members that surround the inner bar member assembly and are bound together with the inner bar member assembly by the binding member, and the fixed bar member assembly that are surrounded by the binding member assembly. 2. A connecting rod member assembly including the plurality of rod members bound together, and connecting the inner rod member assembly and the fixed rod member assembly. Wind power generator. A plurality of the inner rod member assemblies are arranged apart from each other along the vertical direction;
At least a part of the plurality of rod members constituting the connecting rod member aggregate is bound together with two or more of the plurality of inner rod member aggregates by the binding member at different positions.
The inner rod member assembly located at the uppermost position is bundled by a fixing member for fixing the binding member or the rotating shaft to the column in a region not surrounded by the connecting rod member assembly. The wind power generator according to claim 2.   The plurality of bar members constituting the connecting rod member assembly are arranged so that the upper ends thereof are positioned upward as they are located on the inner side with respect to the center of the support column. A part of the plurality of rod members constituting the connecting rod member aggregates, wherein a part of the plurality of rod members constituting the bundling member is located on the inner side with respect to the center of the column than the plurality of the rod members. The wind power generator according to claim 2 or 3, wherein the wind power generator is bound together with a part and the inner rod member assembly.   5. The lower end of at least one of the plurality of rod members constituting the inner rod member assembly located at the lowest position is fixed to the installation surface. The wind power generator described in 1.   The wind power generator according to any one of claims 1 to 5, wherein the plurality of rod members are constituted by hollow pipes.   The wind power generator according to any one of claims 2 to 6, wherein the support column further includes a support member that supports the inner rod member assembly.   The wind turbine generator according to claim 2, wherein at least one of the plurality of rod members constituting the inner rod member assembly is fixed to the installation surface.

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