KR101336220B1 - Seawater lifting System - Google Patents

Abstract

A seawater lifting system is disclosed. Seawater lifting system according to an embodiment of the present invention is an opening formed in the deck of the marine structure, the seawater suction unit installed in the seawater through the opening, the seawater lifting unit installed on the deck and connected to the seawater suction unit and the seawater It accommodates and guides the suction unit, and includes a seawater suction unit guide floating in the sea water by buoyancy.

Description

Seawater Lifting System

The present application relates to a seawater lifting system, and more particularly, to a seawater lifting system that prevents the pump from impacting the offshore structure itself when the pump for raising seawater and the hose connected thereto is lowered.

In recent years, as the use of electric devices using electricity in the modern society becomes more and more, the development of renewable energy rather than a chemical energy source has emerged as an urgent problem.

As an alternative, research is being actively conducted to generate electricity using solar energy, bioenergy, wind energy, hydrogen energy, and marine energy. Here, the marine energy is the energy produced by wave power, hydro, wind, tidal and tidal power generation. Wind power generation of marine energy means generating wind power by securing a stable wind volume at sea by installing a submarine ground-fixed or floating wind generator.

The reason why offshore wind power is drawing more attention than onshore wind power is that it has reached the saturation of wind power installation area on land, and it is possible to secure about 1.5 times the power generation compared to onshore wind power under similar conditions. This is because it shows a small change in wind speed, it is possible to install a super-large wind power generator, and there is little possibility of complaints due to noise.

Recently, wind turbine installation vessels (WTIV) have been built for such wind power generation. Wind generator installation vessels can be operated in four modes due to the nature of the work. The four modes are (1) normal navigation mode, (2) automatic control mode (DP mode, dynamic positioning mode), (3) jacking-up mode, and (4) jacked-up mode. )to be.

In such a mode, in order to install the wind generator, the marine structure must be lifted above the water surface as shown in FIG. 1 through (3) and (4) modes. When an offshore structure is supported on the sea floor and lifted above the sea level, an air draft is formed between the bottom of the offshore structure and the sea level.

In the (1) and (2) modes, where the marine structure is floating, the seawater is pulled from the submerged part and used for various equipment including the engine. However, in modes (3) and (4) where offshore structures are lifted above sea level, a seawater pump system is needed to pull seawater up.

Floating offshore structure disclosed in the Republic of Korea Patent Publication No. 10-2011-0061876 of the prior art is a hull provided with a trunk, a pump installed on the upper part of the trunk, caissons in communication with the trunk, a seawater inhaler for inhaling seawater connected to the caisson It includes. This prior document is characterized in that the pump is provided in the hull. However, there is a need for an apparatus or system for sucking seawater that does not change the design of the hull and does not change the design of the hull using a latent pump.

1 is a side view showing a seawater supply apparatus of a floating offshore structure according to the prior art.

Referring to FIG. 1, the marine structure 1 in the jacked up mode is installed with various plant facilities on a deck of a hull, and a conventional submersible pump 10 is connected to a hose 20. And lowered below the sea level to operate the pump (10). Then, when the seawater is drawn up by using the latent pump 10 connected to the hose 20, the winch 30 is used through the penetrating portion of the hull for the installation of the jacking-up leg 2. The hose 20 is lowered or raised. However, the hose 20 may be shaken by wind and sea water, and in this case, the pump 10 connected to the hose 20 may impact the jacking up leg 2 and damage the jacking up leg 2. There was a problem that could cause it.

The present application is to solve the problems of the prior art as described above, when the pump and the hose connected thereto to raise the seawater is lowered to prevent damage to the marine structure itself, lifting seawater that is not affected by wind and waves We want to provide a system.

According to an aspect of the present invention, a seawater lifting system includes an opening formed in a deck of an offshore structure, a seawater suction unit installed in the seawater through the opening, a seawater lifting unit installed on the deck and connected to the seawater suction unit, and the seawater It accommodates and guides the suction unit, and includes a seawater suction unit guide floating in the sea water by buoyancy.

In addition, the sea water inlet may include an inlet means winch-connected to the seawater lifting unit and a pump connected to the inlet means.

The apparatus may further include a leg portion penetrating through the opening and installed in a vertical direction on the sea bottom, wherein the seawater suction portion and the seawater suction portion guide may be disposed in a space between an end portion of the opening portion and an end portion of the leg portion.

In addition, the seawater suction unit guide may include a wire winch connected to the guide lifting unit and a receiving guide mechanically connected to the wire.

In addition, the first receiving guide and the first receiving guide which is connected to the wire and accommodates the seawater suction unit and rises to the sea surface by buoyancy of seawater, and a predetermined portion rises to the sea surface by buoyancy of the seawater. It may include a second accommodation guide.

The first accommodating guide may include a first structure through which the first accommodating guide penetrates, and a first flange portion extending in a direction perpendicular to a surface of the first structure at an end of the first structure. It may include a second structure having a surface substantially parallel to the first structure and a second flange portion extending in a direction perpendicular to the surface of the second structure at the end of the second structure.

In addition, the material of the seawater suction unit guide may include glass fiber reinforced polyester.

In addition, the cross section of the seawater suction unit guide may have a semi-circular shape.

Embodiment of the present invention by using the seawater inlet guide in the process of supplying seawater to the offshore structure through a pump connected to the hose, the seawater inlet guide prevents the hose from shaking by the wind or waves more stable to the hose The connected pump can be moved up and down.

In addition, by using the opening through the hull for the leg portion installed in the existing floating marine structure, it is possible to pull up the seawater on the floating marine structure, there is no need to make a separate opening for the inflow of marine structure There is no damage to itself and there is no need to change the hull structure.

In addition, the seawater suction unit guide has a material that is easy to act buoyancy, the seawater suction unit guide can be automatically lifted through the opening of the marine structure by buoyancy by the sea water without a separate lifting device.

In addition, the seawater suction unit guide has an effect of preventing the hose from being shaken by wind or waves to prevent the pump connected to the hose from impacting the leg.

In addition, the structure of the seawater intake guide in which the second accommodation guide is accommodated in the first accommodation guide and the second accommodation guide can be lifted into the offshore structure prevents the seawater intake guide from interfering with the navigation when the floating offshore structure is sailing. Can be prevented.

In addition, since the cross section of the seawater suction unit guide has a semicircular shape, the opening surface of the opening is used as a guide when the seawater suction unit guide moves up and down, and thus the seawater suction unit guide can be moved up and down more stably.

1 is a side view showing a seawater supply apparatus of a floating offshore structure according to the prior art.
2 is a cross-sectional view showing a seawater lifting system according to an embodiment of the present invention.
3 is a view for explaining the structure and arrangement of the accommodation guide in the seawater lifting system of FIG.
4 is a perspective view illustrating the seawater suction unit guide of FIG. 2.
Figure 5 is a longitudinal cross-sectional view for explaining the operation method of the seawater lifting system according to an embodiment of the present invention.
Figure 6 is a longitudinal cross-sectional view showing a seawater lifting system is lifted to the hull under buoyancy 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. It is to be understood, however, that the appended drawings illustrate the present invention in order to more easily explain the present invention, and the scope of the present invention is not limited thereto. You will know.

In addition, in describing the embodiments of the present invention, the same name and the same reference numerals are used for the components having the same function, and it is revealed in advance that they are not substantially the same as the components of the conventional seawater lifting system.

Also, the terms used in the present application are used only to describe certain embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

2 is a cross-sectional view showing a seawater lifting system according to an embodiment of the present invention. Referring to FIG. 2, the seawater lifting system 1000 includes an opening 100, a seawater suction unit 200, a seawater lifting unit 400, and a seawater suction unit guide 300.

The opening 100 is formed in the deck of the marine structure 1, and provides a space in which the seawater suction unit guide 200 can move up and down through the opening 100. In addition, the opening 100 provides a space in which the leg portion 2 supporting the offshore structure can be installed in a vertical direction on the sea floor.

The seawater suction unit 200 includes a pump 220 for raising seawater and an inflow unit 240 connected to the pump 220 to allow seawater to flow into the upper deck of the marine structure 1.

The pump 220 is submerged in seawater, so a person skilled in the art as a so-called submersible pump can clearly understand the specific configuration thereof will not be described in detail.

The inflow means 240 may be a plastic or rubber hose or steel pipe. At this time, when the inlet means 240 is made of a hose, the seawater lifting unit 400 may be configured as a winch.

In addition, when the inlet means 240 is made of a hose, since the pump 220 has a considerable weight, it is possible to use a plastic material that can sufficiently support the weight of the pump.

Seawater lifting unit 400 is for lifting or lowering the hose 220 connected to the pump 240, is installed on the deck of the offshore structure (1). In this embodiment, the seawater lifting unit 400 is a general winch described above, and a detailed description thereof will be omitted.

The seawater suction guide 300 includes a wire 320 and a receiving guide 310 mechanically connected to the wire 320. Here, the method of mechanically connecting the wire 320 and the accommodation guide 310 may be made by a welding method, but any method may be used as long as the wire 320 and the accommodation guide 310 may be connected to each other.

The wire 320 is connected to the seawater lifting unit 400, and the entire length of the wire 320 is smaller than the height from the top surface to the bottom surface of the opening 100.

The accommodation guide 310 accommodates the inflow means 240. Detailed description of the accommodation guide 310 will be described later in the accompanying drawings.

As described above, the seawater lifting system 1000 according to the present invention uses an opening penetrated through the deck for the leg portion 2 installed in the existing floating marine structure, and the seawater on the marine structure 1 through the seawater suction unit. Since it can be pulled up, there is no need to make a separate opening for the inflow of sea water there is an advantage that does not need to change the hull structure.

3 is a view for explaining the structure and arrangement of the accommodation guide in the seawater lifting system of FIG.

The accommodating guide 310 has a wider width than the second accommodating guide 340 accommodating the inflow means 240 and the second accommodating guide 340, and a first accommodating accommodating second accommodating guide 340. Guide 360.

The inflow means 240 may be configured as a pair to serve as a connection passage for moving the sea water, and to more stably support the pump 220.

The accommodation guide 310 is disposed in the space between the end of the opening 100 and the end of the leg portion 2, in this case, the cross section of the accommodation guide 310 may be formed in a semi-circular shape. Accordingly, the receiving guide 310 is in contact with the opening surface of the opening 100 can be raised and lowered more stably without shaking.

In the embodiment, the cross-sectional shape of the accommodation guide 310 is shown in a semi-circular shape, but, for example, as in the accommodation guide having a cross-section in the shape of a quadrangle, the contact area of the opening guide 100 is enlarged to stably increase the contact area. It is possible to use any structure that can move down.

Meanwhile, in the embodiment of FIG. 3, only the arrangement of the accommodating guide is illustrated, but the seawater intake guide including the accommodating guide 310 and accommodating the seawater intake is also provided at the end of the opening 100 and the leg portion 2. ) It is placed in the space between the ends and can raise seawater stably.

4 is a perspective view illustrating the seawater suction unit guide of FIG. 2.

Referring to FIG. 4, the seawater suction unit guide 300 includes a wire 320 and an accommodation guide 310 connected to the wire 320. The accommodation guide 310 includes a first accommodation guide 360 for receiving the seawater suction unit and a second accommodation guide 340 for receiving the first accommodation guide 360.

The accommodation guide 310 may be made of glass fiber reinforced polyester (GRP, Glass Reinforced Polyester). Glass fiber reinforced polyester is excellent in mechanical strength, and glass fiber reinforced polyester is a kind of plastic, which is advantageous for being buoyant by seawater. Accordingly, the receiving guide 310 made of glass fiber reinforced polyester is buoyant to be floated above the sea level.

The second accommodating guide 340 accommodates the inflow means 240 such that the inflow means 240 is movable in the longitudinal direction in the second accommodating guide 340.

The second receiving guide 340 has a second structure 341 penetrated therein, and extends in a direction perpendicular to a surface of the second structure 341 at an end of the second structure 341. A second flange portion 342. In other words. The second flange portion 342 is formed such that an upper end of the second accommodation guide 340 is bent in an inner surface direction of the first accommodation guide 360.

The first accommodating guide 360 includes a first structure 361 having a surface substantially parallel to the second structure to accommodate the second accommodating guide 340.

In addition, it includes a first flange portion 362 extending in a direction perpendicular to the surface of the first structure 361 at the end of the first structure (361). In other words. The first flange portion 362 has a form in which a lower end of the first accommodating guide 360 is bent inwardly.

The first flange portion 362 is formed in a form corresponding to the second flange portion 342, the first flange portion 362 is the second by the load of the second receiving guide 340 It is caught by the flange portion 342 and as a result the first receiving guide 360 is able to support the second receiving guide 340 in the downward direction.

Figure 5 is a longitudinal cross-sectional view for explaining the operation method of the seawater lifting system according to an embodiment of the present invention.

Referring to Figure 5, it will be described a method of operating the seawater lifting system according to an embodiment of the present invention.

First, the inflow means 240 connected to the pump 220 is lowered toward the sea surface by using the winch, which is the seawater lifting unit 400 described above in FIG. 2. At this time, as shown in (a) of FIG. 5, the first accommodating guide 360 is seated on the pump 220, and the second accommodating guide 340 is the first accommodating guide ( It is lowered toward the sea level in a state seated in the pump 220 in a state accommodated in 360.

As the inflow means 240 continues to descend using the seawater lifting unit 400, the first accommodation guide 360 descends by the length of the wire 320, and at this time, the first accommodation guide ( 360 is no longer lowered and is in surface contact with the opening surface of the opening 100.

Accordingly, the first accommodating guide 360 descends along the opening surface of the opening 100, so that the first accommodating guide 360 is not shaken by waves or wind.

In addition, as the inflow means 240 continues to descend by the seawater lifting unit 400, the second accommodation guide 340 descends while being seated on the pump 220.

As shown in FIG. 5B, when the distance from the opening 100 to the sea level is longer than the total length of the first accommodation guide 360 and the second accommodation guide 340, the first The flange portion 362 is caught by the second flange portion 342 so that the second receiving guide 340 is no longer lowered and stops.

In contrast, when the second receiving guide 340 is in contact with the sea surface, the second receiving guide 340 is buoyant to float on the sea water. This is because the material of the second receiving guide 340 includes glass fiber reinforced polyester which is well buoyant at sea level.

Finally, when the pump 220 is further lowered below the sea level by a predetermined distance, the operation of the seawater lifting unit 400 connected to the pump 220 is stopped. Accordingly, the pump 220 is stopped without lowering.

Thus, the seawater lifting system 1000 according to the embodiment of the present invention, in the process of supplying the seawater to the marine structure through the pump 220 connected to the inlet means 240, the seawater suction unit guide 300 By using, the seawater suction unit guide 300 is to prevent the inlet 240 is shaken by the wind or waves. Accordingly, the pump 220 connected to the inflow means 240 can be raised and lowered more stably.

In addition, the seawater suction unit guide 300 prevents the inflow unit 240 from being shaken by wind or waves, so that the seawater suction unit guide 300 is connected to the inflow unit 240. It can serve to prevent the impact on the leg portion (2).

Figure 6 is a longitudinal cross-sectional view showing a seawater lifting system is lifted to the hull under buoyancy according to an embodiment of the present invention.

Referring to FIG. 6 (a), when the marine structure moves to another sea, the marine structure 1 supporting the leg portion 2 descends toward the sea level. Accordingly, the second accommodating guide 340 is accommodated in the first accommodating guide 360 by being buoyant by seawater.

When the second accommodating guide 340 is completely received by the first accommodating guide 360, the first accommodating guide 360 is similarly buoyant by seawater along the opening surface of the opening 100. You will be elevated.

When the marine structure 1 is floated on the sea surface, as shown in FIG. 6 (b), the first accommodation guide 360 which accommodates the second accommodation guide 340 is the opening 100. Is accommodated in.

Finally, the seawater lifting unit 400 elevates the inflow means 240.

Accordingly, the accommodating guide 310 and the pump 220 are completely accommodated in the opening 100, so that the marine structure can be sailed without interference by the accommodating guide 310 and the pump 220. .

In addition, since the accommodation guide 310 is buoyant and automatically floated on the sea level, there is an advantage that a winch for lifting the accommodation guide 310 does not need to be separately provided.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention as defined by the appended claims, It is obvious.

1: Offshore Structure 2: Leg Section
10: pump 20: hose
30: winch 220: pump
240: hose 300: seawater intake guide
310: accommodation guide 340: second accommodation guide
341: Second Structure 342: Second Flange
360: first accommodation guide 361: first structure
362: first flange portion 400: seawater lifting unit
1000: Seawater Lifting System

Claims (7)

Openings formed in the deck of the offshore structure;
A seawater suction unit installed in the seawater through the opening;
A seawater lifting unit installed on the deck and connected to the seawater suction unit;
A seawater suction unit guide for receiving and guiding the seawater suction unit and floating on the seawater by buoyancy; And
It includes a leg portion which is installed in the vertical direction through the opening through the opening,
And the seawater suction unit and the seawater suction unit guide are disposed in a space between the end of the opening and the end of the leg portion. The method of claim 1,
The sea water suction unit
Inlet means connected to the winch to the sea water lifting unit and
Pump connected to the inlet means
Including seawater lifting system. delete The method of claim 1,
The seawater suction unit guide
A wire connected to the seawater lifting unit
The receiving guide connected to the wire
Including seawater lifting system. 5. The method of claim 4,
The accommodation guide is
A first accommodation guide connected to the wire to receive the seawater suction unit and rise to the sea surface by buoyancy of seawater;
A second accommodating guide accommodated in the first accommodating guide and having a predetermined portion ascending to the sea surface by buoyancy of the sea water;
Including seawater lifting system. 6. The method of claim 5,
The first receiving guide is a first structure through which the inside,
A first flange portion extending in a direction perpendicular to a surface of the first structure at an end of the first structure,
The second receiving guide includes a second structure having a surface substantially parallel to the first structure and a second flange portion extending in a direction perpendicular to the surface of the second structure at an end of the second structure. Lifting system. The method of claim 1,
Cross-section of the seawater inlet guide has a semicircular shape seawater lifting system.

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