KR101597705B1 - Verticality control testing device for suction base of offshore wind power - Google Patents

Abstract

The present invention relates to a verticality control testing device for a suction foundation for offshore wind power and, more specifically, to a verticality control testing device for a suction foundation for offshore wind power, allows to test verticality control of a suction foundation model for offshore wind power inserted into soil of the ground by providing water and vacuum pressure into each space portion of the suction foundation model for offshore wind power, wherein the suction foundation model for offshore wind power has a plurality of space portions by forming a compartment wall having an identical shape with a suction foundation for offshore wind power.

Description

TECHNICAL FIELD [0001] The present invention relates to a vertical control apparatus for a vertical wind control for a marine wind power suction foundation,

More particularly, the present invention relates to an apparatus for controlling the verticality of an offshore wind power sucking foundation, and more particularly, to an apparatus for controlling verticality of an offshore wind power sucking foundation, In which the water and the vacuum pressure are provided to the vertical axis of the suction force of the suction force of the suction force of the suction force.

Offshore wind power generation refers to a power generation system in which a wind turbine is installed in a lake, a fjord terrain, or a coastal waterside, and the kinetic energy of the wind blowing there is converted into mechanical energy by rotating wings to obtain electricity.

By the end of 2008, the total cumulative capacity of offshore wind turbines was 1,473 MW, slightly more than 1% of the cumulative total capacity of wind turbines. In 2008, 350 MW, a 30% increase, was added.

As for the advantages of offshore wind power generation, it is not easy to find an area where wind turbines can be installed in a country with a narrow land area. In other words, in the case of onshore wind power generation, there is a limitation of installation site. On the other hand, it is possible to construct a large-scale wind power generation complex with a good land acquisition.

In addition, due to the reduction of obstacles, the sea level can be maintained to be 1.5 ~ 2 times higher than that of land-based wind power generation under similar conditions due to less turbulence of wind and change of wind speed according to its height or direction. In the case of power generation, since it is installed off the coast, problems such as noise caused by the enlargement of the wind turbine and visual over-pressure can be solved.

And the wind turbine installed on the sea creates an excellent landscape. For example, in Denver, Denmark, Lunden is known as a successful example of building a global offshore wind farm, becoming a popular sightseeing tour route as well as power production, and the wind turbine support in the seawater serves as a good spawning ground for fish and sea creatures And the wind turbine support on seawater serves as a shelter for migratory birds.

Offshore wind power facilities are largely divided into turbines and bases.

First, the turbine basically applies the same technology as a land-based wind turbine. It has a life span of about 20 years, and it uses wind turbines of 3 ~ 5MW or more, which are larger than those on the land. Each element is designed and coated to prevent corrosion damage due to salt.

In addition, the foundation can be divided into four representative types.

Concrete caisson type is used in the early offshore wind farm because it is easy to make and install. It is applied to Vindeby, Middelgrunden offshore wind farm. It can be used at relatively shallow water depths of 6 ~ 10m and maintain its position by its frictional force with its own weight and sea floor. The foundation diameter is 12 ~ 15m.

The Monopile type is the most widely used offshore wind farm complex, and can be installed at depths of 25 to 30 meters. Horns Rev and North Hoyle offshore wind farms have been applied to large-scale complexes in which the large diameter piles are fixed by driving or drilling on the sea floor. This is good. The base diameter is 3 ~ 3.5m.

The jacket type is a type that is showing much interest in the present state of the offshore wind farm and is being demonstrated, and it can be installed at a depth of 20 ~ 80m. This type, applied in the UK's "The Talisman Beatrice Wind Farm Demonstrator" project, is supported by a jacketed structure and secured to the seafloor by piles or piles. It is a structure of large water depth ocean, has high track record and high reliability, and is economically advantageous when used in large-scale complex construction like monophasic type.

Floating type is being studied by many wind turbines to be installed at a depth of 40 ~ 900m for float type which can be considered as a mandatory task of future deep sea wind power generation.

However, the foundation of such offshore wind power facilities, especially the suction pile, is influenced by strong waves or winds due to typhoons and tsunamis after installation. It causes horizontal displacement by wave or wind, and horizontal displacement is excessive , There is a problem that there is no separate device for correcting the tilt.

In order to solve such a problem, the applicant has filed and registered a tilt correction device for an offshore wind power facility using an internal compartment of Korean Patent Registration No. 10-1044753.

An offshore wind power system tilt correcting apparatus using the internal compartment is provided with a base for installing a structure on an undersurface, an upper structure for partitioning the interior of the compartment vertically and having a plurality of compartments; A plurality of suction pumps installed on the upper surface of the foundation, the suction pumps being located at upper portions of the compartments; A plurality of submerged pumps installed on the upper surface of the foundation, the submersible pumps being positioned above the compartments so as not to interfere with the suction pump; A measurement sensor unit installed on the inner side of the foundation structure to measure a tilt of the foundation; And a controller for checking the tilted direction of the foundation when the tilt exceeds the reference value through the measurement value of the measurement sensor unit and correcting the tilt of the foundation by controlling the operation of each suction pump and the submerged pump according to the tilted direction In the case of excessive horizontal displacement, the inside of the suction pile is vertically divided into the bulkheads, and a plurality of compartments And the inclination is corrected by selectively controlling the pressure and the water level of each compartment using a suction pump and an underwater pump according to the slope of the suction file.

However, since the tilt correction apparatus for an offshore wind power generation system using such an internal compartment needs to perform work in actual sea, an indoor model test is required in advance.

Korean Patent Registration No. 10-1044753 Korean Patent Publication No. 10-1355904

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a water- The present invention has been made to provide a vertical apparatus for vertical control of an offshore wind power suction foundation capable of controlling the verticality of an offshore wind power suction foundation inserted in the ground of the earthworks.

According to an aspect of the present invention,

And the bottom is opened, the ground and water are filled in the inside, and a partition wall is formed in the same shape as the off-shore wind power suction foundation, so that an offshore wind power suction foundation model having a plurality of space portions is vertically inserted Tojo; A water supply tank provided on one side of the toaster to supply water to each space of the offshore wind power suction foundation model; A vacuum pneumatic cylinder installed on the other side of the toaster to raise and lower the piston to generate a vacuum pressure to discharge air and water in each space portion of the offshore wind power suction foundation model; And an up-and-down member installed on an upper portion of the other side of the to-be-cleaned upper portion of the vacuum pneumatic cylinder to move the piston up and down.

In this case, the partition walls of the offshore wind power suction foundation model have the same angle with respect to the central axis, and three or more are formed radially.

Here, in the above-described offshore wind power suction foundation model, a through hole is formed at the upper end of each space portion.

Here, the water supply tank and the vacuum pneumatic cylinder are connected to each other through a through hole of the offshore wind power suction foundation model, a water supply hose and a vacuum hose, and the water supply hose and the vacuum hose are connected to a water supply valve And a drain valve for controlling the vacuum pressure of the vacuum pump.

Herein, the ascending / descending member is installed on the upper part of the toe so as to form a certain height at the upper part of the vacuum pneumatic cylinder, and a frame to which the vacuum pneumatic cylinder is fixed; A bearing installed on an upper portion of the piston rod of the vacuum pneumatic cylinder; A coupler coupled to the bearing top; A ball screw connected to the coupler; And a servo motor for rotating the ball screw to move the piston rod up and down.

According to the present invention having the above-described configuration for controlling verticality of a vertical wind power suction foundation for a marine wind power suction, the partition wall is formed in the same shape as that of the offshore wind power suction foundation, And water pressure and vacuum pressure are provided to test the vertical control of the offshore wind power suction foundation inserted in the ground of the earthworks.

1 is a perspective view showing a configuration of a verticality control experimental apparatus for a marine wind power suction foundation according to the present invention.
2 is a side view of Fig.
3 is a front view of Fig.
4 is a perspective view showing an offshore wind power suction basic model of an apparatus for controlling the verticality of a marine wind power suction foundation according to the present invention.
5 and 6 are explanatory views illustrating an experimental procedure of a vertical control experiment apparatus for a marine wind power suction foundation according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the configuration of an apparatus for controlling verticality for a marine wind power suction foundation according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

2 is a side view of FIG. 1, FIG. 3 is a front view of FIG. 1, and FIG. 4 is a side view of the marine wind power sucking foundation of the present invention, Fig. 2 is a perspective view showing a marine wind power suction foundation model of a verticality control experiment apparatus for a wind power suction foundation.

1 to 4, an apparatus 1 for controlling the verticality of a marine wind power suction foundation according to the present invention comprises an offshore wind power suction foundation model 10, a toaster 20, a water supply tank 30, A vacuum pneumatic cylinder 40, and an ascending / descending member 50.

First, as shown in FIG. 4, the offshore wind power suction foundation model 10 is provided with a plurality of space portions 13 by forming partition walls 11 in the same shape as the offshore wind power suction foundation. Here, the partition 11 of the offshore wind power suction foundation model 10 has the same angle with respect to the center axis and three or more radial shapes are formed, and a through hole 15 is formed in the upper end of each space portion 13 .

Then, the tundish 20 is formed in a rectangular parallelepiped shape, the top is opened, the ground is filled with water, and the offshore wind power suction foundation model 10 is vertically inserted. At this time, the toast (20) is a toast of a centrifugal model test apparatus (not shown), and a reduced model of the structure to be tested, that is, an offshore wind suction baseline model (10) After removing the foreign materials and adjusting the maximum allowable particle size, a homogeneous ground having the same underground stress as that of the paperboard is prepared by centrifugal modeling device, and water is added thereto.

In addition, the water supply tank 30 is provided on one side surface of the tundish 20 to inject water into each space portion 13 of the offshore wind power suction foundation model 10. Here, the water supply tank 30 is connected to the through holes 15 of the offshore wind power suction foundation model 10 by the water supply hoses 31, and the water supply hoses 31 are provided with water supply valves 33 are provided.

The vacuum pneumatic cylinder 40 is installed on the other side of the base 20 and the piston 41 is moved upward and downward to generate vacuum pressure so as to generate a vacuum pressure in the space 13 of the offshore wind power suction foundation model 10 Air and water are discharged. Here, the vacuum pneumatic cylinder 40 is connected to the through hole 15 of the offshore wind power suction foundation model 10 by a vacuum hose 43, and each vacuum hose 43 is provided with drainage A valve 45 is provided.

On the other hand, the lifting member 50 is provided on the upper part of the housing 20 so as to form a certain height from the upper part of the vacuum pressure cylinder 40 and includes a frame 51 to which the vacuum pressure cylinder 40 is fixed, A bearing 53 installed on the upper portion of the piston rod 42 of the cylinder 40 to prevent rotation of the piston rod 42, a coupler 55 connected to the upper end of the bearing 53, a coupler 55, And a servo motor 59 for rotating the ball screw 57 and the ball screw 57 connected thereto in the normal and reverse directions to move the piston rod 42 up and down.

Hereinafter, the operation of the apparatus for controlling the verticality of a marine wind power suction foundation according to the present invention will be described in detail with reference to the accompanying drawings.

First, the ground floor is filled in the to-doo 20, and a uniform ground having the same underground stress as the ground floor is prepared, and then the water is supplied.

Then, a water tank 30, a vacuum pneumatic cylinder 40, and an ascending / descending member 50 are installed in the tank 20, and the offshore wind power suction foundation model 10 is inserted into the ground.

In this state, the drain valve 45 of the vacuum hose 43 is adjusted so as to apply vacuum pressure to each space portion 13 of the offshore wind power suction foundation model 10.

Then, when the servomotor 59 of the ascending / descending member 50 is operated in one direction, the ball screw 57 is rotated to move the piston rod 42 up and down.

As the piston 41 of the vacuum pneumatic cylinder 40 is lifted, vacuum pressure is generated and vacuum pressure is applied to the space portion 13 of the offshore wind power suction foundation model 10 so that the offshore wind power suction foundation model 10 It is inserted in the ground.

In this state, when the offshore wind power suction foundation model 10 is inclined as shown in FIG. 5, the drain valve 45 of the vacuum hose 43 in the corresponding space is closed.

Thus, when the verticality is corrected as shown in FIG. 6, the drain valve 45 is again opened and the same suction pressure is applied to each of the space portions 13 to insert the offshore wind power suction foundation model 10.

On the other hand, if the vertical degree is not corrected, the drain valve 45 of the vacuum hose 43 of the space portion is closed and the water supply valve 33 of the water supply hose 31 is opened.

If the pressure of the water in the water supply tank 30 is increased to increase the pressure of the space portion in the opposite tilt direction to the space portion, the pressure in the space portion in the direction opposite to the tilt is lowered, Is corrected.

While repeating the above procedure, the vertical wind speed is corrected while inserting the offshore wind suction sucking foundation model (10).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

10: Offshore Wind Power Suction Foundation Model 20:
30: Water tank 40: Vacuum pressure cylinder
50:

Claims (5)

And the bottom is opened, the ground and water are filled in the inside, and a partition wall is formed in the same shape as the off-shore wind power suction foundation, so that an offshore wind power suction foundation model having a plurality of space portions is vertically inserted Tojo;
A water supply tank provided on one side of the toaster to supply water to each space of the offshore wind power suction foundation model;
A vacuum pneumatic cylinder installed on the other side of the toaster to raise and lower the piston to generate a vacuum pressure to discharge air and water in each space portion of the offshore wind power suction foundation model; And
And an up-and-down member installed on an upper portion of the other side of the to-be-controlled upper portion of the vacuum pneumatic cylinder to move up and down the piston. The method according to claim 1,
The partition wall of the above-mentioned offshore wind power suction foundation model,
Wherein at least three of the radial directions are formed at the same angle with respect to the central axis. The method according to claim 1,
The offshore wind power suction foundation model,
And a through hole is formed at an upper end of each of the space portions. The method of claim 3,
The water supply tank and the vacuum pneumatic cylinder are connected to each other through a pipe,
The water supply hose and the vacuum hose are connected to each other by a through hole of the above-mentioned offshore wind power suction foundation model, a water supply hose and a vacuum hose, and the water supply hose and the vacuum hose are provided with a water supply valve for controlling the water supply amount and a drain valve for controlling the respective vacuum pressure Verticality control experiment equipment for offshore wind power suction foundation. The method according to claim 1,
Wherein the lifting /
A frame which is installed on an upper portion of the toaster to form a predetermined height at an upper portion of the vacuum pneumatic cylinder and to which the vacuum pneumatic cylinder is fixed;
A bearing installed on an upper portion of the piston rod of the vacuum pneumatic cylinder;
A coupler coupled to the bearing top;
A ball screw connected to the coupler; And
And a servo motor for rotating the ball screw to move the piston rod up and down.

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