WO2020067610A1

WO2020067610A1 - Device for supporting offshore structure body

Info

Publication number: WO2020067610A1
Application number: PCT/KR2019/000194
Authority: WO
Inventors: 유무성; 곽대진; 이준신; 강금석; 김지영; 정민욱; 조동호
Original assignee: 한국전력공사; (주)에드벡트
Priority date: 2018-09-28
Filing date: 2019-01-07
Publication date: 2020-04-02
Also published as: KR102015501B1

Abstract

The present invention prevents respective connecting members connected to a suction pump from being exposed to the outside.

Description

Offshore structure support device

The present invention relates to an apparatus for supporting a marine structure, and more particularly, to prevent the connection members connected to the suction pump from being exposed to the outside, and relates to an apparatus for supporting a marine structure that operates a suction pump according to wind speed.

In general, offshore wind power is considered to be the most competitive new renewable source in recent years in terms of high facility utilization rate, large-scale development, and relatively free from civil complaints, compared to onshore wind power. Development is actively being promoted.

In addition, as the size of offshore wind farms expands, the development site gradually moves to the open sea, and the water depth also increases, and the proportion of the installation cost among the entire project cost is gradually increasing. This has become a very important factor influencing the economics of the business.

For this, it is essential to have a construction method that can quickly install a foundation regardless of the depth.

As the offshore wind farm expands into the open sea, the installation depth is constantly increasing, and the increase in the installation depth is causing technical difficulties along with the increase in the basic cost. Is emerging.

Accordingly, the suction-based construction method, which is highly adaptable to the critical depth and has a short production cost and construction air, has attracted attention.

Since the suction method uses the pressure difference between the inside and outside of the pile as a pipe input, the deeper the depth of the water, the higher the applicability, and can be installed in a short period of time (six hours in the case of a 5m-length 13m suction foundation), which is sensitive to weather conditions. Is being evaluated as a new alternative.

However, in the case of such a suction method, there is a problem in that it requires a professional technical manpower due to technical difficulty, and it takes a lot of time to dismantle the pump after securing the verticality at the time of suction penetration and completing the penetration.

In addition, the conventional method of constructing a suction pile, installs the suction pile by supplying power and running water from a service pants, so that various utility lines such as power and high-pressure hoses float in water vapor. There was a problem of being damaged by various floats.

In particular, when the water depth is high or the flow rate is high, there is a problem in that the possibility of damage to the utility line is increased by increasing the distance between the service pants and the suction file during construction.

In addition, since the pipe input cannot be provided to the suction file according to the wind speed, there is a problem that the suction file is shaken when the wind speed is increased.

The present invention has been devised to solve the above-described problems, and provides a marine structure support device that prevents each connection member connected to the suction pump from being exposed to the outside and operates the suction pump according to wind speed. There is a purpose.

The object of the present invention described above, the upper plate is provided with a sea water pump on the upper surface; A protection member positioned on the lower side of the upper plate and connected to the suction pump with a connection member connected to the seawater pump positioned therein; A suction pile through which the protection member is connected to penetrate the ground; And provided on the outer surface of the suction pile, receiving seawater from the seawater pump through the connecting member, injecting it into the inside of the suction pile, or discharging the seawater filled in the suction pile to the outside. It is achieved by providing an offshore structure support device comprising; a suction pump to control the pressure applied to the ground by.

In addition, the upper plate is characterized in that a sensing member for detecting an external wind speed through a wind speed sensor is provided.

In addition, the sensing member, by operating the suction pump according to the wind speed detected by the wind speed sensor to adjust the suction pump so that the seawater is injected into the suction pile or the seawater filled in the suction pile is discharged to the outside. Characterized in that the additional is provided.

In addition, the suction pump control unit, when the wind speed exceeds the reference value, by operating the suction pump to discharge the sea water filled in the suction pile, characterized in that the pressure by the suction pile is applied to the ground .

In addition, the sensing member is characterized in that the horizontal width gradually decreases from the center to both ends.

In addition, one end is connected to the suction pile, the other end is characterized in that it further comprises at least one support to be connected to the protective member.

In addition, the protection member and the support is characterized in that the flange is coupled.

In addition, the support is characterized in that it is formed inclined.

In addition, it characterized in that it further comprises at least one auxiliary support for reinforcing the support.

In addition, the upper surface of the upper plate is characterized in that it is provided with an impact member for applying the impact by an external force to allow the suction pile to penetrate the ground.

In addition, a valve is provided on one side of the suction pump, and a valve adjusting device for controlling opening and closing of the valve is provided on an upper surface of the upper plate, and when the valve is opened by the valve adjusting device, the suction file inside When the seawater is discharged to the outside through the valve and the valve is closed by the valve regulating device, seawater supplied by the seawater pump is injected into the suction pile.

In addition, the suction pile is provided with an air outlet for discharging the inside air of the suction pile to the outside, and an air outlet adjusting device for controlling opening and closing of the air outlet is provided on the upper surface of the upper plate.

As described above, the present invention marine structure support device has an effect of preventing each connection member connected to the suction pump from being exposed to the outside.

In addition, by placing the seawater pump on the top plate, the suction pile is penetrated into the ground, minimizing the influence of connecting members, such as power and high pressure hoses, by the flow of seawater, and being damaged by fast flow rates or floats. It is effective to prevent wearing.

In addition, by separately installing a sensing member equipped with a wind sensor on the top plate, the suction pump is operated according to the wind speed, so that when the wind speed is strong, external pressure through the suction pile is applied to the ground, so that when the wind speed is strong, the wind speed It has the effect of preventing the support device from shaking in various directions.

In addition, the suction pump is provided with an open-closed valve, and by opening or closing the valve through a valve regulating device, there is an effect of selectively applying suction pressure or drawing pressure to the suction pile as required.

In addition, by providing an impact member at the top of the top plate, when the suction pile is not sealed like a gravel layer and the flow of flowing water is located on an uncontrolled layer, the suction pile is re-grounded by applying external force to the impact member. It has the effect of being intrusive.

1 is a cross-sectional view showing a marine structure support device according to a first embodiment of the present invention.

Figure 2 is a cross-sectional view showing a marine structure support apparatus according to a second embodiment of the present invention.

Figure 3 is a cross-sectional view showing a marine structure support apparatus according to a third embodiment of the present invention.

Figure 4 is a cross-sectional view showing the flow of sea water in a valve open state in the suction pump provided in the marine structure support device according to the first embodiment of the present invention.

Figure 5 is a cross-sectional view showing the flow of sea water in a valve closed state suction pump provided in the marine structure support device according to the first embodiment of the present invention.

Hereinafter, an offshore structure support apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a marine structure support apparatus according to a first embodiment of the present invention.

As shown in Figure 1, the marine structure support apparatus 10 according to the first embodiment of the present invention, the top plate 100, the protective member 150, the suction pump 180, the suction pile 170 and It may include a sensing member 200.

The upper plate 100 is provided on the upper portion of the marine structure support device 10, the generator 110, sea water pump 120, the valve control device 130 and the air outlet control device 140, etc. on the upper surface It is provided.

The generator 110 drives the seawater pump 120, and the seawater pump 120 allows seawater to be supplied into the protective member 150 to be described later, and the valve regulating device 130 is the suction The valve 190 provided in the pump 180 is remotely controlled to open or close.

The air outlet adjusting device 140 remotely controls the air outlet 171 provided in the suction pile 170.

The protection member 150 is located on the lower side of the top plate 100, the connection member 151 connected to the sea water pump 120, for example, a rubber hose for moving the sea water, etc. is exposed to the outside Rather, it is connected to the suction pump 180 in a state located inside.

In the conventional case, since the utility line such as a power line or a rubber hose connected to the seawater pump 120 is connected to the outside, it is easily affected by seawater, but in the case of the present invention, the connecting member 151 Since it is connected to the suction pump 180 in a state located inside the protective member 150, the effect of sea water is minimized.

The suction pile 170 is connected to the protection member 150 to be applied to the ground or separated from the ground by receiving suction pressure or drawing pressure.

The suction pump 180 is provided on the outer surface of the suction pile 170, is connected to the sea water pump 120 through the connecting member 151, the sea water pump through the connecting member 151 ( 120) is supplied with seawater and injected into the suction pile 170.

In addition, the seawater filled in the suction pile 170 is discharged to the outside, so that the pressure applied to the ground by the suction pile 170 is controlled.

The sensing member 200 is configured such that a part of the upper plate 100 is exposed above the sea level S, and senses wind speed on the sea level S.

At this time, one end of the sensing member 200 is provided with a wind speed sensor 210, through the wind speed sensor 210 to detect the wind speed on the sea level (S).

Here, by operating the suction pump 180 according to the wind speed detected by the wind speed sensor 210, seawater is injected into the suction pile 170, or the seawater filled inside the suction pile 170 is external. Suction pump control unit 220 to be discharged may be further provided.

At this time, the suction pump control unit 220, when the wind speed exceeds the reference value, by operating the suction pump 180 to discharge the sea water filled in the suction pile 170, the suction pile 170 Pressure is applied to the ground to prevent the support device 10 from being easily shaken by the wind speed when the wind speed is strong.

In addition, the sensing member 200 may be configured such that the horizontal width gradually decreases from the center to both ends, and since the horizontal width of the center is formed the largest, it is possible to prevent the wind from being easily damaged when the wind speed is strong. You can.

In addition, the offshore structure support device 10 may further include at least one support 160 that is connected to the suction pile 170 at one end and the protective member 150 at the other end. The support 160 may be formed to be inclined.

Through the support 160, the protection member 150 may be more rigidly maintained in a state located under the upper plate 100.

Here, the protection member 150 and the support 160 may be flange-coupled.

Specifically, the coupling member 153 is formed to be inclined at one end of the protection member 150, and a first flange portion 153a for coupling with the support 160 is provided at one end of the coupling member 153. .

In addition, a second flange portion 160a is also provided at one end of the support 160 so that the support 160 and the protection member 150 are connected through each of the

flange portions

153a and 160a.

In the conventional case, since the protection member 150 and the support 160 are interconnected through welding, the welding surface is deformed in the welding process, but in the case of the present invention, the protection member 150 and the support 160 To prevent the deformation in the welding process by flange coupling, to improve the coating quality.

In addition, the offshore structure support device 10 may further include at least one auxiliary support (not shown) that reinforces the support 160.

Therefore, the offshore structure support device 10 prevents shaking or damage due to an externally applied impact through the support 160 and the auxiliary support.

On the other hand, a valve 190 is provided on one side of the suction pump 180, and a valve adjusting device 130 for adjusting opening and closing of the valve 190 may be provided on the upper surface of the top plate 100.

Therefore, the valve 190 is opened or closed by the valve regulating device 130. When the valve 190 is opened, the seawater (A) provided through the seawater pump 120 and the suction When the seawater (B) inside the pile 170 is discharged to the outside through the valve 190 through the inlet and outlet holes 181, and the valve 190 is closed by the valve regulating device 130, the seawater Seawater (A) supplied by the pump 120 may be injected into the suction pile 170 through the outlet hole 181.

In addition, the suction pile 170 is provided with an air outlet 171 for discharging the inside air of the suction pile 170 to the outside, and the upper surface of the top plate 100 is opened and closed of the air outlet 171. An air outlet adjusting device 140 for adjusting may be provided.

Accordingly, the user controls the air outlet adjusting device 140 to open or close the air outlet 171 so that the air inside the suction pile 170 is discharged to the outside through the air outlet 171. You can.

On the other hand, Figure 2 is a cross-sectional view showing a marine structure support device 10 according to the second embodiment of the present invention.

Offshore structure support apparatus 10 according to the second embodiment of the present invention, as in the first embodiment of the present invention, the top plate 100, the protective member 150, the suction pile 170 and the suction pump 180 ).

The generator 110 is disposed adjacent to the sea water pump 120 to drive the sea water pump 120, and the sea water pump 120 allows sea water to be supplied to the inside of the protection member 150.

The valve control device 130 remotely controls the valve 190 provided in the suction pump 180 to open or close, and the air outlet control device 140 is provided in the suction pile 170 The air outlet 171 is remotely controlled, and the protection member 150 is located on the lower side of the upper plate 100, so that the connecting member 151 connected to the seawater pump 120 is located therein. It is to be connected to the suction pump 180.

The suction pile 170 is connected to the protection member 150 is applied with a suction pressure or a drawing pressure, the suction pump 180 is provided on the outer surface of the suction pile 170, the connecting member It is connected to the sea water pump 120 through (151), receiving sea water from the sea water pump 120 through the connecting member 151 and injecting it into the suction pile 170.

In addition, the protection member 150 and the support 160 may be flange-coupled.

Here, the coupling member 153 is formed to be inclined at one end of the protection member 150, and the first flange portion 153a for coupling with the support 160 is provided at one end of the coupling member 153.

flange portions

153a and 160a.

In addition, the offshore structure support device 10 may further include at least one auxiliary support (not shown) for reinforcing the support 160, the offshore structure support device 10 and the support 160 It is prevented from being shaken or damaged by an impact applied from the outside through the auxiliary support.

Here, an impact member 300 may be further provided on the upper surface of the upper plate 100.

The impact member 300 is located on the upper surface of the top plate 100, and when an external force is applied, the impact is applied to the suction pile 170 to allow the suction pile 170 to penetrate the ground. You can.

For example, if the tip of the suction pile 170 is not sealed such as a gravel layer and the flow of the running water is located in an uncontrolled layer, additional penetration of the suction pile 170 is impossible.

At this time, when an impact is applied to the impact member 300 from the outside and the suction pile 170 penetrates a gravel layer of a certain length due to the impact, a suction section is applied to add the suction pile 170. Intrusion can proceed.

Specifically, a vibration force may be evenly applied to the circumferential surface of the tip of the suction pile 170 by applying an impact to the impact member 300 using a vibro hammer.

On the other hand, a valve 190 is provided on one side of the suction pump 180, and a valve adjusting device 130 for adjusting opening and closing of the valve 190 may be provided on the upper surface of the upper plate 100, When the valve 190 is opened by the valve regulating device 130, seawater inside the suction pile 170 is discharged to the outside through the valve 190 through the outflow hole 181, and the valve is regulated When the valve 190 is closed by the device 130, seawater supplied by the seawater pump 120 may be injected into the suction pile 170 through the outlet hole 181.

On the other hand, Figure 3 is a cross-sectional view showing a marine structure support device 10 according to a third embodiment of the present invention.

As shown in Figure 3, the marine structure support apparatus 10 according to the third embodiment of the present invention, as the first and second embodiments of the present invention, the top plate 100, the protective member ( 150), a suction pile 170 and a suction pump 180.

The upper plate 100 is provided on the upper portion of the marine structure support device 10, the generator 110 drives the sea water pump 120, and the sea water pump 120 protects the sea water from the protection member ( 150), and the valve regulating device 130 controls the valve 190 provided in the suction pump 180 to be remotely opened or closed.

The air outlet adjusting device 140 remotely controls the air outlet 171 provided in the suction pile 170, and the protection member 150 is located below the top plate 100, so that the seawater The connecting member 151 connected to the pump 120, for example, a rubber hose for moving sea water, etc., is connected to the suction pump 180 in a state located therein.

The suction pile 170 is connected to the protection member 150 is applied to the suction pressure or is applied to the extraction pressure is extracted from the ground or separated from the ground, the suction pump 180 is the outside of the suction pile 170 It is provided on the surface, is connected to the sea water pump 120 through the connecting member 151, receives the sea water from the sea water pump 120 through the connecting member 151 inside the suction pile 170 Infuse with.

In addition, the pressure applied to the ground by the suction pile 170 is controlled by discharging the seawater filled in the suction pile to the outside.

In addition, even in the case of the third embodiment of the present invention, the protection member 150 and the support 160 may be flange-coupled.

flange portions

153a and 160a.

In addition, the offshore structure support device 10 may further include at least one auxiliary support 160 (not shown) to reinforce the support 160, the offshore structure support device 10 is the support ( 160) and the auxiliary support to prevent shaking or damage due to external impact.

At this time, the upper surface of the top plate 100 may be provided with an impact member 400, the impact member 400 is located on the upper surface of the top plate 100, when an external force is applied to the impact The suction pile 170 may be applied to allow the suction pile 170 to penetrate the ground.

Here, in the case of the second embodiment of the present invention, the upper width of the impact member 300 is formed to be longer than the width of the lower portion, so that the portion located outside the sea level S of the impact member 300 is affected by wind speed. Although not greatly received, in the case of the third embodiment of the present invention, the width of the impact member 400 is formed to be the same in the vertical direction, so that the impact member 400 is independent of the position of the impact member 400 It can be made to be less affected by the wind speed.

Through this, the user controls the air outlet control device 140 to open or close the air outlet 171 so that the air inside the suction pile 170 is discharged to the outside through the air outlet 171. can do.

In the case of the present invention configured as described above, each connecting member 151 connected to the suction pump 180 is prevented from being exposed to the outside.

In addition, by placing the seawater pump 120 on the top plate 100, the suction pile 170 is penetrated into the ground, so that the connecting members 151, such as a power supply and a high pressure hose, are affected by the flow of seawater. Minimizes it and prevents it from being damaged by fast flow rates or floats.

In addition, by separately providing a sensing member 200 equipped with a wind sensor on the top plate 100, the suction pump 180 is operated according to the wind speed, so that the external pressure through the suction pile 170 is strong when the wind speed is strong. By applying it to the ground, when the wind speed is strong, the support device 10 is prevented from shaking in various directions by the wind speed.

In addition, the suction pump 180 is provided with an open-closed valve 190, and by opening or closing the valve 190 through the valve regulating device 130, the suction pressure or the drawing pressure is selectively selected in the suction pile 170 as necessary. Can be applied as

In addition, by providing the impact member (300, 400) on the top of the top plate 100, when the suction pile 170 is not sealed like a gravel layer, the flow of flowing water is located on an uncontrolled layer outside The force can be applied to the

impact members

300 and 400 so that the suction pile 170 can be penetrated into the ground again.

Although the preferred embodiment of the present invention has been described above, it is clear that the present invention can use various changes, modifications and equivalents, and can be equally applied by appropriately modifying the embodiment. Therefore, the above description is not intended to limit the scope of the present invention as defined by the following claims.

Claims

An upper plate having a seawater pump on the upper surface;

A protection member positioned on the lower side of the upper plate and connected to the suction pump with a connection member connected to the seawater pump positioned therein;

A suction pile through which the protection member is connected to penetrate the ground; And

It is provided on the outer surface of the suction pile, receives seawater from the seawater pump through the connecting member, injects it into the inside of the suction pile, or discharges the seawater filled in the suction pile to the outside to the suction pile. Offshore structure support device comprising a; suction pump to adjust the pressure applied to the ground.
According to claim 1,

The upper structure of the upper plate is provided with a sensing member for detecting an external wind speed through a wind speed sensor sensor.
According to claim 2,

The sensing member,

A suction pump control unit is provided to operate the suction pump according to the wind speed sensed by the wind speed sensor to inject seawater into the suction pile or to discharge the seawater in the suction pile to the outside. Offshore structure support.
According to claim 3,

The suction pump control unit,

When the wind speed exceeds the reference value, the marine structure support device, characterized in that by operating the suction pump to discharge the sea water filled in the suction pile, the pressure by the suction pile is applied to the ground.
According to claim 3,

The sensing member is a marine structure support device, characterized in that the horizontal width gradually decreases from the center to both ends.
According to claim 3,

One end is connected to the suction pile, the other end of the marine structure support device further comprises at least one support to be connected to the protective member.
The method of claim 6,

Offshore structure support device, characterized in that the protective member and the support is flange-coupled.
The method of claim 6 or 7,

The support is an offshore structure support device, characterized in that formed inclined.
The method of claim 6 or 7,

And at least one auxiliary support for reinforcing the support.
According to claim 1,

The upper surface of the upper plate is provided with an impact member for applying an impact by an external force to the suction pile to penetrate the ground, characterized in that the marine structure support device.
The method of claim 2 or 10,

A valve is provided on one side of the suction pump,

On the upper surface of the upper plate is provided with a valve adjusting device for adjusting the opening and closing of the valve,

When the valve is opened by the valve regulating device, seawater inside the suction pile is discharged to the outside through the valve,

When the valve is closed by the valve regulating device, the marine structure support device, characterized in that the sea water supplied by the sea water pump is injected into the suction pile.
The method of claim 11,

The suction pile is provided with an air outlet for discharging the inside air of the suction pile to the outside, and an upper surface of the upper plate is provided with an air outlet adjusting device for controlling opening and closing of the air outlet. .