KR20150144980A - Sea water intake system of nearshore power plant - Google Patents

Sea water intake system of nearshore power plant Download PDF

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Publication number
KR20150144980A
KR20150144980A KR1020140074127A KR20140074127A KR20150144980A KR 20150144980 A KR20150144980 A KR 20150144980A KR 1020140074127 A KR1020140074127 A KR 1020140074127A KR 20140074127 A KR20140074127 A KR 20140074127A KR 20150144980 A KR20150144980 A KR 20150144980A
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South Korea
Prior art keywords
seawater
offshore
plant
intake
installation
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KR1020140074127A
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Korean (ko)
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임유창
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대우조선해양 주식회사
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Priority to KR1020140074127A priority Critical patent/KR20150144980A/en
Publication of KR20150144980A publication Critical patent/KR20150144980A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00—Caissons; Construction or placing of caissons
    • E02D23/02—Caissons able to be floated on water and to be lowered into water in situ

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The present invention relates to a seawater intake system for an offshore plant for the installation of a coastal area (shore area), and more particularly, to an offshore plant installed on a offshore area, when sea water is used as cooling water for cooling a plant facility, The present invention relates to a seawater intake system for an offshore installation for an offshore installation, in which the function of a buffering tank as well as the connection of a seawater intake pipe is facilitated and a seawater can be safely performed without the inflow of foreign matter.

Figure P1020140074127

Description

[0001] SEA WATER INTAKE SYSTEM OF NEARSHORE POWER PLANT [0002]

The present invention relates to a seawater withdrawal system for an offshore plant installed in a coastal watershed (Chunsu area), and more particularly, to an offshore plant installed on a offshore watershed, when sea water is used as cooling water for cooling plant facilities, The present invention relates to a seawater intake system for an offshore installation for an offshore installation, in which a seawater intake structure is installed to facilitate the connection of a seawater intake pipe as well as the function of a buffering tank and to safely take seawater without the inflow of foreign matter.

In general, natural gas is a fossil fuel containing methane as a main component and a small amount of ethane, propane, and the like, and is recently attracting attention as a low-pollution energy source in various technical fields.

Natural gas may be transported in a gaseous state and may be transported to a remote location where it is stored in an LNG carrier in the form of liquefied natural gas (LNG).

Liquefied natural gas is obtained by cooling natural gas at a cryogenic temperature (approximately below -163 ° C), and its volume is reduced to approximately 1/600 of that of natural gas, making it well suited for long distance transportation through the sea.

In recent years, development of various marine resources has become active due to depletion of landfilled energy, and oil wells and gas wells are being secured and developed for the purpose of extracting crude oil and natural gas from the sea. As a result, many floating structures such as LNG FPSO (Floating, Production, Storage and Offloading) and LNG FSRU (Floating Storage and Regasification Unit) have been developed as facilities for producing LNG at sea.

LNG is relatively inexpensive and less polluting, so it can be said to be suitable as a power generation fuel. Generally, a power plant using conventional LNG as fuel is generally installed on land, particularly on a coastal area where raw material supply and demand is easy and the cost of securing paper is low.

There is also a growing demand for a technology to provide a power plant in a floating structure such as a barge to supply necessary electricity to the offshore structure itself or to generate electricity on the sea and transmit it to the land.

Offshore structures, such as power plants, desalination plants, and liquefied storage structures, are installed on floating structures such as barges. Floating structures or floating fluids are very limited in their installation area because of the indispensable connection between the upper float facility and the onshore infrastructure facility.

Accordingly, a suitable float lashing device is required and the device must be designed and installed to withstand the environmental loads that may occur during the operation of the plant facility.

Floating structure or floater means floating structure on the sea or river bed. It is a dock for building the ship's side wall or ship's ship such as oil tanker or LNG carrier, floating barge, floating barge, Floating Airport, float used for drilling rig for oil drilling, etc.

Floating structures have the risk of being moved to undesired locations by algae and the like, which generally limits their movement by mooring facilities.

There is a mooring method using the anchor, but the method using the anchor can not precisely control the position of the float installed on the coast, and it is troublesome to avoid the area in the severe marine environment.

Registration No. 10-1260992

In order to solve the above-described problems, in the case of using sea water as cooling water for cooling a plant facility in an offshore plant installed in a coastal sea area, a seawater inlet structure is installed beside the offshore structure, And to provide a seawater intake system for an offshore installation for an offshore installation capable of easily connecting seawater intake pipes and safely taking seawater without introducing foreign matter.

According to an aspect of the present invention, there is provided a seawater intake system for an offshore installation for a coastal marine installation, the system including: a seawater inlet structure fixedly installed on a seabed near a offshore plant; At least one absorbing flexible hose connecting the seawater storage tank of the offshore installation marine plant to the seawater intake structure; And a water intake fixed pipe installed in the seawater intake structure and extending to the deep sea.

The seawater intake structure may be formed as a concrete caisson structure as a seawater intake tower for seawater settlement.

The seawater intake structure is configured to connect the intake flexible hose and the intake fixed pipe, and is configured to function as a buffering tank.

Meanwhile, a seawater intake system of an offshore installation for a coastal marine installation according to another exemplary embodiment of the present invention includes: a seawater inlet structure fixedly installed on a seabed to support an offshore plant; At least one absorbing flexible hose connecting the seawater storage tank of the offshore installation marine plant to the seawater intake structure; And a water intake fixed pipe installed in the seawater intake structure and extending to the deep sea.

The bottom of the seawater intake structure may be fixed to the seabed and the upper portion of the seawater intake structure may be formed with an upper support trench along the outer periphery thereof.

As described above, according to the present invention, when sea water is used as cooling water for cooling a plant facility in an offshore plant installed in a coastal waterside area, a seawater inlet structure is provided beside the offshore structure, The connection of the seawater intake pipe is easy and the seawater can be safely taken without foreign matter.

FIG. 1 is a conceptual diagram showing a seawater intake system of a marine plant for installing a coastal marine installation according to an embodiment of the present invention.
2 is a plan view showing a seawater intake system of an offshore plant for offshore installation according to an embodiment of the present invention.
3 is a side view showing a seawater intake system of a marine plant for offshore installation according to an embodiment of the present invention
4 is a side view showing a seawater intake system of an offshore plant for offshore installation according to another embodiment of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a seawater intake system of an offshore installation marine plant according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan view showing a seawater intake system of an offshore installation marine plant according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a marine water intake system of a marine plant for offshore installation according to an embodiment of the present invention. FIG. 4 is a side view showing a seawater intake system of an offshore installation marine plant according to an embodiment of the present invention.

1 to 3, the offshore installation offshore plant 10 according to an exemplary embodiment of the present invention is installed in the offshore installation, and the power generation unit 12 is mounted on the floating structure 11 .

The seawater intake system of an offshore installation for an offshore installation according to an exemplary embodiment of the present invention includes a seawater inlet structure 110 fixedly installed on a seabed in close proximity to a offshore installation offshore plant 10; At least one suction flexible hose (120) connecting the seawater storage tank (13) of the offshore installation marine plant (10) and the seawater inlet structure (110); And a water intake fixed pipe 130 installed at the seawater inlet structure 110 and extending to the deep sea.

The seawater intake system of the offshore installation marine plant includes at least one offshore plant 10 for mounting the offshore installation on the jetty or the seashore and at least one flexible intake hose 120 for connecting the seawater intake structure 110 to the seawater inlet structure (110). Then, the intake holding pipe 130 is extended to the deep water.

The seawater inlet structure 110 may be formed of a concrete caisson structure as a seawater inlet tower for seawater settlement. The concrete caisson is made of a reinforced concrete box, which is manufactured from a dock or a land dock, and is carried by a towing vessel or a crane line to the site to be installed as a gravity type structure. Is fixed to the seabed.

The seawater inlet structure 110 connects the flexible hose 120 to the borehole fixed pipe 130 and is configured to function as a buffering tank.

Since the offshore plant for offshore installation 10 floats on the sea and is subjected to six degrees of freedom movement (front and rear, right and left and up and down movements), it is not easy to connect the intake pipe 130 to the offshore installation offshore plant 10 There is a risk that the connection site is easily broken.

In order to solve this problem, the seawater withdrawal system of an offshore installation for an offshore installation according to an example of the present invention includes a facility (for example, cooling of a power generation facility and a desalination facility) in an offshore plant 10 installed in a coastal sea area The seawater intake structure 110 is installed on the offshore plant 10 to facilitate the connection of the intake fixed pipe 130 as well as the function of the buffering tank and to remove the foreign matter The seawater intake structure 110 connects the flexible intake hose 120 and the intake fixed pipe 130 and functions as a buffering tank.

4 is a side view showing a seawater intake system of an offshore installation marine plant according to another embodiment of the present invention.

4, a seawater intake system for an offshore installation for a coastal marine installation according to another exemplary embodiment of the present invention includes a seawater inlet structure 210 fixedly installed on a seabed to support a marine plant 10 for installation of a offshore installation, At least one suction flexible hose 220 connecting the seawater storage tank 13 of the plant 10 and the seawater inlet structure 210 and a plurality of suction hoses 220 installed at the seawater inlet structure 210, And includes an accommodating fixing pipe 230.

Unlike the seawater inlet structure 110 of FIG. 2, the seawater inlet structure 210 according to another embodiment of the present invention has a function of connecting the intake flexible hose 220 and the intake fixed pipe 230, And has a function of supporting the offshore plant 10 itself.

Since the offshore installation offshore plant 10 is provided on the seawater inlet structure 210, the flow of the offshore installation offshore plant 10 is greatly reduced, and power generation or fresh water operation can be performed smoothly.

The seawater inlet structure 210 may be formed of a concrete caisson structure as a seawater inlet tower for seawater settlement. The concrete caisson is made of a reinforced concrete box, which is manufactured from a dock or a land dock, is suspended by a towing vessel or a crane, and is transported to the site to be installed as a gravity type structure. And the support tuck 211 may be formed upwardly along the outer periphery thereof.

A guide inclined surface 211a may be formed at an inner end of the support tuck 211 so that when the offshore plant 10 is immersed on the upper surface of the seawater inlet structure 210, And guides the light to the upper surface of the light guide plate 210.

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 embodiments, but, on the contrary, Various modifications and variations are possible within an even range.

10: offshore plant for offshore installation
11: Floating structure
12: Power generation unit
13: Seawater storage tank
110: Seawater intake structure
120: Flexible hose for intake
130: Fixed pipe for intake
210: Seawater intake structure
220: Flexible hose for intake
230: Fixed pipe for intake

Claims (7)

A seawater intake structure fixed on the seabed near the offshore plant for offshore installation;
At least one absorbing flexible hose connecting the seawater storage tank of the offshore installation marine plant to the seawater intake structure; And
And a water intake fixed pipe installed in the sea water intake structure and extended to a deep sea. The method according to claim 1,
Wherein the seawater inlet structure is a seawater inlet tower for a marine settlement. The method according to claim 1,
Wherein the seawater intake tower is formed of a concrete caisson structure. The method according to claim 1,
Wherein the seawater intake structure is configured to connect the intake flexible hose and the intake fixed pipe. The method according to claim 1,
Wherein the seawater intake structure has a function of a buffering tank. A seawater intake structure fixed to the seafloor to support an offshore plant for offshore installation;
At least one absorbing flexible hose connecting the seawater storage tank of the offshore installation marine plant to the seawater intake structure; And
And a water intake fixed pipe installed in the sea water intake structure and extended to a deep sea. The method of claim 6,
Wherein the bottom of the seawater intake structure is fixed to the seabed and the upper portion of the seawater intake structure is formed with an upper support trench along the outer periphery thereof.
KR1020140074127A 2014-06-18 2014-06-18 Sea water intake system of nearshore power plant KR20150144980A (en)

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Application Number Priority Date Filing Date Title
KR1020140074127A KR20150144980A (en) 2014-06-18 2014-06-18 Sea water intake system of nearshore power plant

Publications (1)

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