KR101369771B1 - Levelling evaluation device for transition piece of wind power plant - Google Patents

Abstract

The present invention relates to a leveling evaluation device for a transition piece for leveling when a transition piece is connected to a monopile forming the foundation of an offshore wind power plant. The present invention comprises: a main frame having a bottom body placed on the ground, multiple posts erectly installed on the outer surface of the bottom body, and an upper body arranged corresponding to the bottom body inside the multiple posts; a load cylinder vertically hung on the underside of the upper body of the main frame; a tilting cylinder arranged on a piston of the load cylinder and the upside of a test bed; the test bed connected to the end of the piston of the load cylinder and arranged in a space between the bottom body and the upper body; a vertical transverse vertically hung on the underside of the test bed; leveling cylinders hung on the edge of the underside of the test bed; screws arranged between the lower part of the tilting bed and the upper part of the bottom body to control the inclination of the tilting bed; and a control unit for controlling the tilting cylinders and the leveling cylinders. The present invention is a technology for testing the control characteristics of the leveling cylinders and the tilting cylinder.

Description

LEVELLING EVALUATION DEVICE FOR TRANSITION PIECE OF WIND POWER PLANT}

The present invention relates to the field of environmentally friendly renewable energy, in particular to a wind generator, and more particularly, to an apparatus for leveling performance evaluation of a transition piece for leveling the transition piece when connecting the transition piece to a monopile.

There is a growing interest in environmentally friendly alternative energy for a variety of reasons, and research on this is being concentrated.

Wind power generation is a typical alternative energy source commercialized, and offshore wind farms are being built in Korea.

The foundation of offshore wind turbines should be firmly installed on the bottom of the ocean. Monopiles and jacket structures are mainly used.

Monofil type means that a large diameter pipe is fixed to the bottom of the sea, and a transition piece is connected to the top of the monopile, and a tower is coupled to the transition piece.

When the monopile is embedded in the sea floor, a dedicated device is used. The monopile is preferably installed upright and directed toward the gravity direction. However, it is not easy to install the monopile in the direction of gravity exactly and some errors occur.

When connecting the transition piece to the top of the installed monopile, the transition piece should be installed so that the monopile faces the direction of gravity even if the monopile is slightly out of gravity.

The various components of the wind generator are assembled on the ground in a modular form and then moved to the site by a ship and then installed by using a crane. In a constantly floating sea, a crane is used to accurately install a structure such as a transition piece. It is not easy to do.

Hydraulic leveling technology has been used in various fields, and it may be effective to match the leveling of the transition piece with hydraulic pressure even when connecting the transition piece to a monopile when constructing an offshore wind generator.

Installing large structures offshore is a costly and time-consuming task, so even small mistakes are not tolerated. Therefore, sufficient verification and testing of the hydraulic leveling device for the installation of the transition pieces is necessary.

Republic of Korea Patent Publication No. 10-2013-0012106 (2013.02.01 published) Republic of Korea Patent Registration 10-1278811 (2013.06.25 announcement) Republic of Korea Patent Publication No. 10-2013-0076251 (published Jul. 8, 2013) Republic of Korea Patent Publication No. 10-2012-0001384 (2012.01.04 published)

The present invention has been made to solve the above requirements, to provide an apparatus for leveling performance evaluation of a transition piece that can evaluate the performance of the hydraulic leveling device under conditions similar to the installation of the transition piece in the offshore wind turbine installation process. The purpose is.

An apparatus for leveling performance evaluation of a transition piece according to the present invention includes: a main body frame including a bottom body placed on the ground, a plurality of posts installed upright on the outer circumferential surface of the bottom body, and an upper body disposed to correspond to the bottom body in the plurality of posts; A rod cylinder connected to a lower surface of an upper body of the main body frame and suspended in a vertical downward direction; A tilting cylinder disposed at an end of the piston of the rod cylinder and an upper surface of the test bed; A test bed connected to an end of a piston of the rod cylinder and disposed in a space between the bottom and the upper body; A vertical transverse suspended vertically downward on a lower surface of the test bed; A leveling cylinder connected along a lower surface of the test bed and disposed to hang vertically downward; A tilting bed connected to the screw disposed on the upper surface of the floor to function as a monopile; A screw disposed between the lower part of the tilting bed and the upper surface of the bottom body to adjust a tilt of the tilting bed; And a control unit for controlling the tilting cylinder and the leveling cylinder.

In addition, the rod cylinder is configured to be disposed in the center of the lower body of the upper body frame.

In addition, one or two of the tilting cylinders are disposed at the end of the rod cylinder piston and the upper surface of the test bed for tilting control of the rod cylinder.

In addition, the vertical transverse is configured to be vertically suspended downward in the center of the lower surface of the test bed.

In addition, the leveling cylinder is configured to be arranged in a plurality of vertically downward along the lower edge of the test bed.

In addition, the screw is configured such that the plurality of the tilting bed is tilted control the tilting bed as the plurality of upright along the edge of the lower surface of the tilting bed is arranged upright on the upper surface of the body.

In addition, a gyro sensor (GYRO SENSOR) for measuring the tilt of the test bed is installed on the test bed, the leveling cylinder and the tilting cylinder is provided with a stroke sensor (STROKE SENSOR).

In addition, a gyro sensor (GYRO SENSOR) capable of measuring the tilt of the test bed is disposed on the test bed upper surface.

According to the information provided by the gyro sensor (GYRO SENSOR) characterized in that the control unit automatically controls the leveling cylinder to be able to align the test bed horizontally.

According to the above configuration, there is an advantage that the leveling test and the performance for the transition piece installation can be evaluated under conditions similar to the actual conditions. In addition, by utilizing the present invention there is an effect that can prevent in advance mistakes, such as accidents expected at sea work.

Figure 1 shows a leveling performance evaluation apparatus according to an embodiment of the present invention.
Figure 2 shows the vertical movement of the test bed of the leveling performance evaluation apparatus according to an embodiment of the present invention.
Figure 3 shows the tilting motion of the test bed of the leveling performance evaluation apparatus according to an embodiment of the present invention.
4 illustrates an auto leveling process of the leveling performance evaluation apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. And may be exaggerated, simplified, or omitted to clearly illustrate the invention in the drawings.

1 shows a leveling performance evaluation apparatus according to an embodiment of the present invention.

Referring to the drawings, the leveling performance evaluation device of the present invention evaluates the performance of the hydraulic leveling device required to position the correct level and position of the transition piece when thermally installing the transition piece on the top of the monopile in installing an offshore wind generator. It is for.

For some reason, even if the monopile was installed at a slight angle out of the correct direction of gravity, the transition piece would have to be correctly positioned to keep it level.

It is not easy to mount about 300 tons or more of the transition pieces horizontally on the monopiles on the top of the sea, and high installation technology and know-how is required.

The level one performance evaluation device of the present invention is to provide a leveling performance evaluation device that can confirm the performance of the hydraulic leveling device for the installation of the transition piece on land before use in the field.

Specifically, the leveling performance evaluation apparatus according to an embodiment of the present invention is a main body consisting of a floor body placed on the ground and a plurality of posts installed upright on the outer circumferential surface of the floor body and an upper body disposed to correspond to the floor body inside the plurality of posts. Frame 100, the rod cylinder 200 which is disposed hanging vertically downward in the center of the lower surface of the upper body of the main body frame 100, is connected to the end of the piston of the rod cylinder 200, the bottom and the upper A test bed 400 disposed in a space between the sieves and receiving a load from the rod cylinder 200, one or two tilting cylinders disposed at an end of a piston of the rod cylinder 200 and an upper surface of the test bed 400 ( 300), the vertical transverse 500 is disposed hanging vertically downward on the lower surface of the test bed 400, the test bed 400 is connected along the lower edge A leveling cylinder 600 suspended vertically downward, a tilting bed 700 connected to a screw disposed on the top surface of the check body and serving as a monopile, between the lower part of the tilting bed 700 and the upper surface of the floor. It is disposed in the screw 800 to adjust the tilt of the tilting bed 700, and the control unit 900 for controlling the tilting cylinder 300 and the leveling cylinder 600 is made.

The bottom body and the upper body placed on the ground are formed in a polygonal shape and a plurality of posts are connected to each other along the outer circumferential surface of the bottom body and the upper body to form a rigid fixed structure body frame.

The rod cylinder 200 is coupled in the form of hanging vertically downward in the center of the lower surface of the main body frame. The rod cylinder 200 acts to impart the corresponding force as a function of the transition piece.

The rod cylinder 200 stroke end surface is connected to the center of the upper surface of the test bed 400, the tilt cylinder 300 is connected to the stroke end side of the rod cylinder 200.

Preferably, the stroke end of the rod cylinder 200 is connected to the pivot connection or link so that the test bed 400 can be tilted, the end side side portion is to be connected to the stroke end of the tilting cylinder 300.

The test bed 400 is a circular plate or a polygonal plate-like object, the gyro sensor (S1) for measuring the slope of the test bed 400 is disposed on the test bed 400 upper surface.

In the present invention, two tilting cylinders 300 are disposed on the upper surface of the test bed 400, but two or more tilting cylinders 300 may be disposed to adjust the position of the rod cylinder 200.

The tilting cylinder 300 performs the function of adjusting the rod cylinder 200 to assume that when the transition piece is actually installed at sea, the transition piece approaches the top of the monopile with a slight inclination.

In addition, a stroke sensor (not shown) may be attached to a piston or the like for controlling the tilting cylinder 300.

A plurality of leveling cylinder 800 is disposed on the lower surface of the test bed 400, the leveling cylinder 800 is individually controlled, when the eccentric load is applied to the test bed 400 or the tilting bed 700 is inclined inclined The control bed 900 is controlled to keep the test bed 400 horizontal.

That is, the control of the plurality of leveling cylinders 800 allows the test bed 400, which functions as a transition piece, to be horizontally aligned in any situation.

Meanwhile, a stroke sensor S2 is attached to a piston or the like for controlling the plurality of leveling cylinders 800.

The tilting bed 700 and the screw 800 are disposed on the upper surface of the body frame bottom.

The tilting bed 700 is fixed not only to the case where the actual monopile is vertically anchored to the sea bottom by gravity by the adjustment of the screw 800 installed on the upper surface of the seabed, but also to the monoptic to be inclined in some cases to the sea bottom. It is assumed that the test can be performed. In other words, it functions as a mono file.

On the other hand, the upper surface of the tilting bed 700 is in contact with the leveling cylinder 600, so as to form a horizontal plane as a whole and the hollow portion is formed so that the vertical transverse 500 can be disposed in the center of the tilting bed 700.

Preferably, according to the shape of the main frame 100 of the leveling performance evaluation apparatus, the shape of the tilting bed 700 may also be formed in a circle shape, a square shape, and a polygonal shape.

The vertical transverse 500 is suspended vertically downward on the center lower surface of the test bed 400 to support the floor and the connection test bed 400.

In addition, the connection between the vertical stance bus 500 and the bottom body is to be a pivot connection or link connection so that the test bed 400 can be tilted.

On the other hand, the leveling performance evaluation apparatus of the present invention is provided with a control unit 900 for controlling the rod cylinder 100, the tilting cylinder 300 and the leveling cylinder 600, the user is a rod cylinder 100, tilting cylinder When the condition for the operation of the 300 and the leveling cylinder 600 is input, the leveling cylinder 600 controls to level the test bed 400 by automatic control.

Meanwhile, the gyro sensor S1 is provided on the upper surface of the test bed 400 to measure the inclination of the test bed 400, and each of the plurality of leveling cylinders 600 is provided with a stroke sensor S2.

The gyro sensor (S1) and the stroke sensor (S2) are electrically connected to the control unit (900), and the test bed (400) may be configured based on the tilt of the test bed (400) or the piston moving distance value of the leveling cylinder (600). Each leveling cylinder 500 is automatically controlled to keep the horizontal.

Referring to the operation of the leveling performance evaluation apparatus of the transition piece for the construction of a wind power generator according to the embodiment configured as described above are as follows.

2 shows a vertical position movement of the test bed 400 according to an embodiment of the present invention.

Referring to the drawings, FIG. 2 (a) illustrates that the rod cylinder 200 is operated so that the end of the rod cylinder pressurizes the test bed 400 so that the test bed and the leveling cylinder 800 are simultaneously lowered and the leveling cylinder 800 is operated. The descent is completed by seating on the tilting bed 700.

FIG. 2 (b) shows that the piston rod of the leveling cylinder 800 protrudes by operating the leveling cylinder 600 so that the test bed 400 and the rod cylinder 200 are simultaneously raised and completed.

At this time, since the hydraulic pressure is not applied to the rod cylinder 200, the piston rod of the rod cylinder 200 is raised by a force for raising the test bed 400 by the leveling cylinder 800.

3 illustrates a tilting motion of the test bed 400 according to an embodiment of the present invention.

3 (a) is connected to the upper body and the test bed 400 by the wire (WIRE) in the ascending completion state of the test bed 400, the leveling cylinder 600 by operating the piston rod is inserted into the cylinder to level the cylinder 600 is completely spaced from the tilting bed 700.

Here, connecting the upper body and the test bed 400 with a wire (WIRE) is to securely secure the test bed 400, such as the vertical transverse 500, because the leveling cylinder 600 is spaced apart from the tilting bed (700) It is.

3 (b) tilts the tilting bed 700 so that the test may be performed by assuming that the monopile is fixed to the sea bottom by tilting the screw 800.

3 (c) shows that the test cylinder 400 descends by operating the rod cylinder 200.

FIG. 3 (d) stops the operation of the rod cylinders 200 and automatically controls the respective leveling cylinders 600 so that the ends of the respective leveling cylinders 600 are seated on the upper surface of the tilted tilting bed 700. The test bed 400 is leveled.

3 (e) shows that the wire WIRE is removed and the rod cylinder 200 is pulled into the tilting cylinder 400 while pressing the rod cylinder 200. This assumes that the transition piece approaches the top of the monopile with a slight tilt.

3 (f) shows that the test bed 400 is inclined by operating the leveling cylinder 600, respectively.

4 illustrates an auto leveling process of the leveling performance evaluation apparatus according to an embodiment of the present invention.

4 (a) shows that the test bed 400 and each leveling cylinder 600 is in a tilting state, and FIG. 4 (b) shows that the automatic leveling is completed by the leveling performance evaluation apparatus according to the embodiment of the present invention. It is shown.

In the automatic leveling process, the gyro sensor S1 provides the inclination direction and angle of the test bed 400 and the rod cylinder 200 to the control unit 900, and the control unit 900 uses automatic calculation. In order to keep the test bed 400 horizontal, the plurality of leveling cylinders 600 are individually controlled.

Each leveling cylinder 600 is equipped with a stroke sensor (S2) to control the hydraulic pressure acting on each leveling cylinder 600, so that the test bed 400 can be kept horizontal.

When the gyro sensor S1 is notified by the manipulation of the leveling cylinder 600, the control unit 900 stops controlling the leveling cylinder 600.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to the said Example, A various deformation | transformation is possible for a person with ordinary knowledge within the scope of the technical idea of this invention.

100: frame
200: rod cylinder
300: tilting cylinder
400: test bed
500: Vertical Transverse
600: leveling cylinder
700: tilting bed
800: screw
900: control unit
S1: Gyro Sensor
S2: Stroke Sensor

Claims (9)

In the leveling performance evaluation device for adjusting the leveling when connecting the transition piece to the monopile forming the offshore wind generator,
A main body frame including a bottom body placed on the ground, a plurality of posts installed upright on the outer circumferential surface of the bottom body, and an upper body disposed to correspond to the bottom body in the plurality of posts;
A rod cylinder connected to a lower surface of an upper body of the main body frame and suspended in a vertical downward direction;
A tilting cylinder disposed at an end of the piston of the rod cylinder and an upper surface of the test bed;
A test bed connected to an end of a piston of the rod cylinder and disposed in a space between the bottom and the upper body;
A vertical transverse suspended vertically downward on a lower surface of the test bed;
A leveling cylinder connected along a lower surface of the test bed and disposed to hang vertically downward;
A tilting bed connected to the screw disposed on the upper surface of the floor to function as a monopile;
A screw disposed between the lower part of the tilting bed and the upper surface of the bottom body to adjust a tilt of the tilting bed;
Control unit for controlling the tilting cylinder and the leveling cylinder; Leveling performance evaluation device of the transition piece for the wind turbine construction, characterized in that comprises a.
The method according to claim 1,
The rod cylinder is leveling performance evaluation device of the transition piece for the construction of the wind turbine, characterized in that disposed in the center of the upper body of the main frame.
The method according to claim 2,
The tilting cylinder is a leveling performance evaluation device of the transition piece for the wind turbine construction, characterized in that consisting of one or two for the tilting control of the rod cylinder.
The method according to claim 1,
The vertical transverse device is a leveling performance evaluation device of the transition piece for the construction of a wind turbine, characterized in that the vertical arrangement is suspended downward in the center of the lower surface of the test bed.
The method according to claim 1,
The leveling cylinder is a leveling performance evaluation device of the transition piece for the construction of a wind turbine, characterized in that a plurality of vertically arranged along the lower edge of the test bed.
The method according to claim 1,
The screw is arranged in the plurality of upright along the bottom edge of the tilting bed on the upper surface of the body, the tilting control is tilted as the tilting bed is adjusted by adjusting the screw leveling performance evaluation of the transition piece for a wind turbine construction Device.
The method according to claim 1,
Gyro sensor (GYRO SENSOR) that can measure the slope of the test bed is a leveling performance evaluation device of the transition piece for the wind turbine construction, characterized in that installed in the test bed.
The method according to claim 1,
Stroke sensor (STROKE SENSOR) is installed in the leveling cylinder and the tilting cylinder leveling performance evaluation device of the transition piece for the wind turbine construction.
The method of claim 7,
And the control unit controls the test bed horizontally by controlling the leveling cylinder according to information provided by a gyro sensor (GYRO SENSOR).

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