JP2003028046A - Supporting structure of wind mill for wind power generation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a supporting structure of a wind mill for wind power generation capable of leaving a part of strength necessary for the wind mill for wind power generation to a waterbreak, reducing a space on the sea and under the sea necessary for construction of the wind mill for wind power generation, shortening a construction schedule, and reducing construction cost. SOLUTION: The supporting structure of the wind mill for wind power generation includes at least a support 3 for supporting a power generator and a propeller for rotating the power generator, and a plurality of supporting legs 4, 4' for supporting the support 3. A part of the supporting leg 4' out of the supporting legs 4, 4' is placed on an upper part of the waterbreak 8, and the other supporting leg 4 is placed under the sea 9.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a support structure for a wind turbine for wind power generation.

[0002]

2. Description of the Related Art Conventionally, wind turbines for wind power generation have been constructed on peninsulas, on the tip of a cape, or on a remote island in consideration of stable strong winds and environmental issues such as noise. There were many However, in recent years, wind turbines for wind power generation have
It is also often constructed in relatively shallow coastal areas with a water depth of 10 m or less or in the sea near breakwaters.

When constructing a wind turbine for wind power generation in the vicinity of a breakwater, it is difficult to construct a windmill for wind power generation on the breakwater because the width of the breakwater is narrow. Or, it is constructed outside the breakwater in the open sea.

The conventional support structure for a wind turbine for wind power generation will be described with reference to the drawings. FIG. 5 is a solid line showing an example of the case where the conventional wind turbine for wind power generation is installed inside the breakwater.
An example of a case where the wind turbine is installed in the open sea outside the breakwater is shown in phantom lines, and FIG. 6 is a case where a conventional wind turbine for wind power generation different from that in FIG. 5 is installed in the open sea inside the breakwater. FIG. 3 is a side view of a main part, showing an example of a solid line and an example of a case where the example is installed in the open sea outside the breakwater.

First, in FIG. 5, the generator 1 and the generator 1 are rotated by wind force on the upper portion of the pillar 3 in the form of a monopole shown by the solid line when installed in the inland sea 9 inside the existing breakwater 8. A propeller 2 and other auxiliary devices are attached for the purpose. The lower end of each of the columns 3 is fixedly installed on the foundation frame 5 that is sunk on the abandoned stone mound 6 formed on the seabed 7 in the inner sea 9 inside the breakwater 8.

Similarly, when installed in the open sea 10 outside the breakwater 8, the generator 1'and the generator 1'by wind force are also provided above the pillars 3'in the form of monopoles shown in phantom. A propeller 2'and other accessory devices for rotating the are attached. Also in this case, the lower end of the pillar 3 ′ is fixedly installed on the foundation skeleton that is sunk on the abandoned stone mound formed on the seabed 7 in the open sea 10 outside the breakwater 8.

Next, the wind turbine for wind power generation shown in FIG. 6 has four support legs 4. As shown by the solid line in FIG. 6, the generator 1 is installed above the pillar 3 of the wind turbine for wind power generation installed in the inland sea 9 inside the existing breakwater 8 for rotating the generator 1 by wind power. The propeller 2 and other auxiliary devices are attached. The lower end of each pillar 3 is supported by a plurality of support legs 4, and the lower end of each support leg 4 is on a rubble mound 6 formed on the seabed 7 in the inland sea 9 inside the breakwater 8. It is fixedly installed on the foundation frame 5 that has been sunk.

Similarly, as shown by the broken line in FIG. 6, even in the case of a wind turbine for wind power generation installed in the open sea 10 outside the breakwater 8, the generator 1'and wind Thus, a propeller 2'and other auxiliary devices for rotating the generator 1'are attached. Also in this case, the lower end of the support column 3'is supported by a plurality of support legs, and the lower end of each support leg has a breakwater 8
It is fixedly installed on the foundation frame that is sunk on the abandoned stone mound formed on the seabed 7 in the open sea 10 outside.

[0009]

As shown in FIGS. 5 and 6, in order to construct a wind turbine for wind power generation in the inland sea 9 of the breakwater 8, a waste stone mound 6 is formed on the seabed ground 7, Submerged ground 7 such as laying down the foundation frame 5 of steel box body filled with concrete on the formed waste stone mound 6
You must build a windmill with a special foundation above it. Therefore, there are problems such as an increase in construction cost and a prolonged construction period.

When constructing a wind turbine for wind power generation in the inland sea 9 inside the breakwater 8 as shown by the solid lines in FIGS. 5 and 6, the function inside the breakwater 8 should not be impaired.
It is necessary to secure the space necessary for constructing a wind turbine for wind power generation.
As indicated by the phantom line, it is unavoidable to construct a wind turbine for wind power generation in the open sea 10. In this case,
When constructing a wind turbine for wind power generation, it is necessary to specially install a foundation that takes into account waves and other factors.

Therefore, the present invention makes it possible to deposit a part of the strength required for a wind turbine for wind power generation on a breakwater.
By doing so, it becomes possible to simplify the foundation structure on the breakwater, while also making it possible to miniaturize the foundation frame of the other supporting legs that sink to the seabed, and for the wind turbine for wind power generation. The construction requires only a small offshore and undersea space for construction, and enables a wind turbine for wind power generation to be constructed inside the breakwater using a small offshore and undersea space, resulting in the prevention of waves, etc. A support structure for a wind turbine for wind power generation, which does not require any special foundation to be considered, shortens the construction period of the wind turbine for wind power generation, and reduces the construction cost. Is to provide.

[0012]

In order to solve the above-mentioned problems, a support structure for a wind turbine for wind power generation according to the present invention includes a support for supporting at least a generator and a propeller for rotating the generator, and a support for the same. Having a plurality of support legs for supporting,
One of the support legs is installed above the breakwater, while the other support leg is installed in the sea.

Further, in the support structure for a wind turbine for wind power generation according to the present invention, some of the support legs are installed on an upper portion of the breakwater, while the other support legs are on a pile driven into the seabed. It is characterized by being installed in.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a main part showing a part of a support structure for a wind turbine for wind power generation according to an embodiment of the present invention in section, and FIG. 2 is a support structure for a wind turbine for wind power generation according to the embodiment of FIG. 3 is a plan view, FIG. 3 is a side view of an essential part showing a part of a supporting structure of a wind turbine for wind power generation according to an embodiment different from FIG. 1 of the present invention in cross section, and FIG. 4 is related to the embodiment of FIG. It is a top view of the support structure of the windmill for wind power generation.

First, referring to FIGS. 1 and 2, the support structure of the wind turbine for wind power generation has a propeller for rotating the generators 1 and 1'and the generators 1 and 1'as shown in FIGS. 2, 2'and its supporting devices and the like, and a supporting column 3 and multi-leg type supporting legs for supporting the supporting column 3, for example, four supporting legs 4, 4 '.

As shown in FIGS. 1 and 2, some of the four support legs 4 and 4 ', for example, two support legs 4'adjacent to each other are provided on the existing breakwater 8. While the other two support legs 4 are fixedly installed, the other two support legs 4 are fixedly installed on the foundation skeleton 5 sunk on the abandoned stone mound 6 formed on the seabed 7 in the inland sea 9 inside the breakwater 8. There is. The outside of the breakwater 8 is the open sea 10.

In FIG. 1 and FIG. 2, in addition to the number of supporting legs supporting the columns 3 of the wind turbine for wind power generation being four, it is possible to use any other plural number of supporting legs. At least one of the plurality of supporting legs is fixedly installed on the upper part of the existing breakwater 8, and the other supporting leg is installed on the inside sea 9 inside the breakwater 8 or the outside sea 10 outside the breakwater 8. It is also possible to fix it to the foundation skeleton 5 which is sunk on the abandoned stone mound 6 formed on the seabed 7.

In any case, as shown in FIGS. 1 and 2, a part of the supporting legs 4 and 4'for supporting the wind turbine for wind power generation, for example, the supporting legs 4 are constructed on the breakwater 8 to obtain the required strength. By depositing a part of the above into the breakwater 8, the basic structure on the breakwater 8 can be simplified, and the basic skeleton 5 sunk on the seabed can be miniaturized. Therefore, the construction cost of the wind turbine for wind power generation can be reduced, the construction period can be shortened, and the offshore and undersea space required for the construction of the wind turbine for wind power generation can be small. It can be constructed in the inland sea inside the breakwater without using space.

3 and 4, the support structure of the wind turbine for wind power generation is for rotating the generators 1, 1'and the generators 1, 1'as shown in FIGS. 5 and 6. It has a support column 3 for supporting the propellers 2, 2'and its associated devices, and a multi-leg type support leg for supporting the support column 3, for example, three support legs 4, 4 '.

As shown in FIGS. 3 and 4, some of the support legs, for example, two support legs 4 and 4'are fixedly installed on the upper portion of the breakwater, while others are provided. One of the supporting legs 4 is fixedly installed on the upper part of the pile 11 made of, for example, steel or concrete that is driven into the seabed 7 of the inland sea 9 inside the existing breakwater 8. The outside of the breakwater 8 is the open sea 10.

In FIGS. 3 and 4, when it is difficult to construct a wind turbine for wind power generation on the inside sea 9 side inside the breakwater 8, a pile 11 is driven into the seabed 7 of the open sea 10 to support the support leg 4 , 4 ', some of the supporting legs 4'are fixedly installed on the upper part of the breakwater, while the other supporting legs 4 are driven into the seabed 7 of the open sea 10 outside the breakwater 8, for example made of steel or concrete. It can also be fixedly installed on the upper part of the pile 11.

In FIGS. 3 and 4, since the foundation frame 5 as shown in FIGS. 1 and 2 is not provided, the support structure of the wind turbine for wind power generation can be a simpler foundation structure. The offshore and undersea space for the construction of wind turbines can be further reduced.

In the structure for supporting a wind turbine for wind power generation shown in FIGS. 3 and 4, in addition to the number of supporting legs for supporting the columns 3 of the wind turbine for wind power generation being three, any other plural number may be used. , And at least one of the plurality of supporting legs is fixedly installed on the upper portion of the existing breakwater 8, and the other supporting legs are attached to the inside sea 9 inside the breakwater 8. Alternatively, it may be fixedly installed on an upper portion of a pile 11 made of, for example, steel or concrete that is driven into the seabed 7 in the open sea 10 outside the breakwater 8.

In any case, as shown in FIGS. 3 and 4, a part of the supporting legs 4 and 4'for supporting the wind turbine for wind power generation, for example, the supporting legs 4'are constructed on the breakwater 8 and required. By depositing a part of the strength on the breakwater 8, the foundation structure on the breakwater 8 can be simplified, and the seabed 7
Driven into, for example, steel or concrete piles 1
1 can further reduce the offshore and undersea space for the construction of the wind turbine, which can reduce the construction cost of the wind turbine, shorten the construction period, and further reduce the wind turbine. Since the offshore and undersea space required for construction is small, the wind turbine for wind power generation can be built in the inland sea inside the breakwater without using a large offshore and undersea space.

[0025]

According to the support structure for a wind turbine for wind power generation of the present invention, the following effects can be obtained. (1) It has at least a prop for supporting a generator and a propeller for rotating the generator, and a plurality of support legs for supporting the prop, and some of the support legs are of a breakwater. While it is installed on the upper part, other support legs are installed in the sea, so part of the support legs that support the wind turbine for wind power generation is constructed on the breakwater and part of the required strength is deposited on the breakwater. In that case, the foundation structure on the breakwater can be simplified, while the foundation frame of other supporting legs that sink to the seabed can be downsized, and the wind turbine for wind power generation The sea and undersea space required for construction is small, and it becomes possible to construct a wind turbine for wind power generation in the inland sea inside the breakwater without using a large sea or undersea space. Specially set up a foundation considering Finished even without, construction period of the wind turbine for wind power generation is shortened, it is possible to reduce the construction costs (claim 1). (2) In the support structure for the wind turbine for wind power generation, some of the support legs are installed on the upper part of the breakwater, while the other support legs are installed on the pile driven into the seabed ground. Therefore, it is possible to construct part of the support legs that support the wind turbine for wind power generation on the breakwater and deposit a part of the required strength on the breakwater, in which case the basic structure on the breakwater is simple. On the other hand, by driving the piles into the seabed, it is not necessary to lay down the foundation frame of the supporting legs, and it is possible to further reduce the offshore and undersea space for the construction of wind turbines for wind power generation. It became possible to construct a windmill in the inland sea inside the breakwater without using large offshore and undersea spaces, in which case there was no need to specially prepare a foundation considering waves and the like,
The construction period of the wind turbine for wind power generation can be shortened and the construction cost can be reduced (claim 2).

[Brief description of drawings]

FIG. 1 is a side view of an essential part showing a cross-section of a part of a support structure for a wind turbine for wind power generation according to an embodiment of the present invention.

FIG. 2 is a plan view of a support structure for a wind turbine for wind power generation according to the embodiment of FIG.

FIG. 3 is a side view of an essential part showing in section a part of a support structure for a wind turbine for wind power generation according to an embodiment different from that of FIG. 1 of the present invention.

FIG. 4 is a plan view of a support structure for a wind turbine for wind power generation according to the embodiment of FIG.

FIG. 5 is a side view of essential parts showing a case where a conventional wind turbine for wind power generation is installed inside a breakwater with a solid line and a case where the wind turbine is installed outside the breakwater with a virtual line.

FIG. 6 is a side view of a main part, showing an example in which a conventional wind turbine for wind power generation different from that in FIG. 5 is installed inside a breakwater with a solid line and an example when installed outside the breakwater with a phantom line. Is.

[Explanation of symbols]

1 generator 2 propeller 3 props 4,4 'support leg 5 Basic structure 6 Abandoned Stone Mound 7 seabed 8 breakwater 9 Utsumi 10 open sea 11 piles

Claims (2)

[Claims] 1. A support having at least a prop for supporting a generator and a propeller for rotating the generator, and a plurality of support legs for supporting the support, and a part of the support legs is one of the support legs. A support structure for a wind turbine for wind power generation, characterized in that it is installed above the breakwater while other support legs are installed in the sea. 2. The support structure for a wind turbine for wind power generation according to claim 1, wherein some of the support legs are installed on an upper portion of the breakwater, while the other support legs are provided on the seabed. It is characterized by being installed on a driven pile,
Wind turbine support structure.