KR-20260064193-A - floating offshore structure

Abstract

A floating marine structure is disclosed. A floating marine structure according to one aspect of the present invention comprises: a deck on which various marine facilities are mounted; a pontoon disposed below the deck to form buoyancy so that the deck floats on the sea; a column disposed between the deck and the pontoon to connect the deck and the pontoon; and a balance adjustment unit that maintains the stability of the marine facilities by adjusting the weight distribution within the pontoon, wherein the balance adjustment unit comprises: a first ballast tank disposed inside the pontoon; a transfer pipe connected to the first ballast tank for injecting or discharging ballast water; and an insertion pipe disposed inside the column and connected to the transfer pipe to insert and withdraw a pump.

Inventors

• 윤상훈
• 권세현

Assignees

• 삼성중공업 주식회사

Dates

Publication Date

20260507

Application Date

20241031

Claims (5)

1. A deck equipped with various marine facilities; A pontoon positioned below the deck to form buoyancy so that the deck floats on the sea; A column disposed between the deck and the pontoon to connect the deck and the pontoon; and It includes a balance adjustment unit that maintains the stability of the marine facility by adjusting the weight distribution within the pontoon, The above balance adjustment unit is, A first ballast tank disposed inside the above pontoon; A transfer pipe connected to the first ballast tank, through which ballast water is injected or discharged; and A floating offshore structure comprising an insertion tube disposed inside the column and connected to the transfer pipe to allow insertion and withdrawal of a pump.
2. In paragraph 1, The above pontoon is formed in the shape of a square frame, and The first ballast tanks are provided in plurality on each side of the pontoon, and The above transfer pipe is provided in multiple numbers, A floating offshore structure in which one end of each of the plurality of transfer pipes is connected to each of the plurality of first ballast tanks to correspond to one another.
3. In paragraph 1, The above columns are formed in multiple numbers, and Multiple insertion tubes are arranged within multiple of the above columns, and One end of a plurality of the above-mentioned insertion tubes is connected to the other end of a plurality of the above-mentioned transfer tubes so as to correspond to each other, and A floating marine structure in which an insertion tube cover is individually disposed at each other end of a plurality of the above-mentioned insertion tubes.
4. In paragraph 3, The above balance adjustment unit is, It further includes a seawater pump that is selectively inserted and installed in any one of the plurality of the above-mentioned insertion tubes or separated and withdrawn. The above seawater pump is, Inserted into the above insertion tube and enters the interior of the above column, A floating offshore structure that performs initial seawater filling and maintenance by injecting or discharging ballast water into the first ballast tank through the transfer pipe corresponding to the insertion pipe.
5. In paragraph 1, The above-mentioned balance adjustment unit includes a second ballast tank, and The second ballast tank is provided at least one on each side of the pontoon, and A ballast pump is connected to each of the above-mentioned second ballast tanks, and The above ballast pump is a floating offshore structure that operates in the event of an emergency.

Description

Floating offshore structure The present invention relates to a floating marine structure. Generally, offshore structures are those that can be moored while floating on the sea surface and are classified into various types depending on their function, structure, and mooring method. For example, there are various types of offshore structures, such as SEMI (Semi-Submersible), TLP (Tensioned Leg Platform), SPAR (Single Point Anchor Reservoir), FPSO (Floating, Production, Storage and Off-loading), FSRU (Floating Storage and Regasification Unit), or drilling rigs. Recently, with increasing interest in alternative energy sources to replace thermal power generation, nuclear power generation, and ocean current power generation, the utilization of wind energy through these offshore structures is being actively researched. Meanwhile, floating offshore structures necessarily employ ballast systems to maintain stability at sea. Conventional ballast systems are designed to install multiple pumps, valves, and complex piping systems inside the structure to ensure structural stability. While these traditional systems help floating offshore structures cope with various marine environments such as waves, wind, and currents, they have the disadvantage of being very complex and costly to install and maintain. Furthermore, in existing systems, all pumps and valves must be permanently installed to ensure the entire system remains in a constantly operational state. Consequently, equipment that is not used except in certain emergency situations must be installed, which leads to reduced system efficiency and the generation of unnecessary costs. In particular, as shown in Fig. 1, for special marine structures such as offshore substations (OSS) that convert and adjust voltage before transmitting power produced at an offshore wind farm to land, a ballast system different from that of general floating structures is required because there is almost no change in the weight of the superstructure. FIG. 1 is a schematic drawing of a floating offshore structure equipped with an offshore wind power substation. FIG. 2 is a schematic diagram showing a floating offshore structure according to one embodiment of the present invention. FIG. 3 is a cross-sectional view taken along line I-I of FIG. 2. FIG. 4 is an enlarged view of section A of FIG. 3. FIG. 5 is a schematic diagram showing a balance adjustment section of a floating offshore structure according to one embodiment of the present invention. Hereinafter, embodiments of a floating offshore structure according to the present invention will be described in detail with reference to the accompanying drawings. In describing with reference to the accompanying drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. FIG. 2 is a schematic diagram showing a floating marine structure according to one embodiment of the present invention. Referring to FIG. 2, a floating marine structure (1) according to one embodiment of the present invention includes a deck (100), a pontoon (200), a column (300), and a balance adjustment unit (400). The deck (100) is a part on which various marine equipment is installed. For this purpose, it may include a flat bottom formed on part or all of the upper surface. The deck (100) can be formed in various structures depending on the purpose of the marine structure, that is, the type of work performed on the deck (100). The marine structure according to one embodiment of the present invention may be, for example, an offshore substation (OSS), and may be equipped with various facilities for collecting power, converting it into high voltage, and transmitting it to land. However, it is not necessarily limited to this, and facilities for the exploration, extraction, storage, processing, and transportation of crude oil, gas, seabed minerals, etc. may be installed. Additionally, drilling equipment for the exploration of crude oil, etc., refining equipment for the processing of crude oil, etc., regasification equipment for gas, etc., and terminal equipment for the storage or transportation of marine resources may be installed on the deck (100). A pontoon (200) is positioned below the deck (100) to form buoyancy so that the deck (100) floats on the sea. Referring to FIG. 2, a pontoon (200) according to one embodiment of the present invention may be formed in the shape of a square picture frame. The pontoon (200) is composed of a buoyancy body, with part or all of it located below the sea surface, and thus can form buoyancy to support the deck (100). That is, the deck (100) can be supported in a floating state on the sea due to the buoyancy formed by the pontoon (200). The pontoon (200) can be positioned so that a portion of it is exposed above the water surface when the marine structure (1) moves, and can be positioned entirely below the water surface to minimize resistance when the marine structure (1)