KR20170035663A - Fairlead seafastening apparatus of marine structure - Google Patents

Fairlead seafastening apparatus of marine structure Download PDF

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Publication number
KR20170035663A
KR20170035663A KR1020150134845A KR20150134845A KR20170035663A KR 20170035663 A KR20170035663 A KR 20170035663A KR 1020150134845 A KR1020150134845 A KR 1020150134845A KR 20150134845 A KR20150134845 A KR 20150134845A KR 20170035663 A KR20170035663 A KR 20170035663A
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KR
South Korea
Prior art keywords
magnetic member
hull
underwater
electromagnet
pair lead
Prior art date
Application number
KR1020150134845A
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Korean (ko)
Other versions
KR101735330B1 (en
Inventor
서장훈
박지선
Original Assignee
삼성중공업 주식회사
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Priority to KR1020150134845A priority Critical patent/KR101735330B1/en
Publication of KR20170035663A publication Critical patent/KR20170035663A/en
Application granted granted Critical
Publication of KR101735330B1 publication Critical patent/KR101735330B1/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 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
    • B63B21/10—Fairleads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J3/00—Driving of auxiliaries
    • B63J3/04—Driving of auxiliaries from power plant other than propulsion power plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2221/00—Methods and means for joining members or elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J3/00—Driving of auxiliaries
    • B63J2003/001—Driving of auxiliaries characterised by type of power supply, or power transmission, e.g. by using electric power or steam
    • B63J2003/002—Driving of auxiliaries characterised by type of power supply, or power transmission, e.g. by using electric power or steam by using electric power

Abstract

The present invention provides a fairlead seafastening apparatus of a marine structure. According to the present invention, the fairlead seafastening apparatus of a marine structure comprises: an underwater fairlead installed outside a hull; an electromagnet fixing unit installed in a hull and fixating the underwater fairlead by using a magnetic force; and an electromagnet controller controlling a current supplied to the electromagnet fixing unit.

Description

[0001] FAIRLED SEA FASTENING APPARATUS OF MARINE STRUCTURE [0002]

[0001] The present invention relates to an offshore structure, and more particularly to a fairleading device for an offshore structure that secures the fairlead to the hull when the offshore structure is transported.

In general, FPSO (Floating Production Storage and Offloading) is a float-type crude oil production storage and unloading facility that refines crude oil from deep-sea oilfield mined from offshore plant or drill ship and stores it in a shuttle tanker or other transport facility It is an offshore structure that allows unloading.

Such an offshore structure can be classified into a lower hull structure (Hull) that functions to store a large amount of crude oil according to its structure, and a topsides that produces crude oil and processes the crude oil. In addition, the offshore structure is provided with mooring equipment capable of mooring to a specific position in the sea, and such mooring facilities are provided at a plurality of locations over the entire circumference of the hull structure.

Moorings arrangement is a general term for equipment used for boats of ships and typically includes anchors, anchor chains and anchor lines, which are connected to the chain by rotating the chain links on the deck of the athlete. There is a windlass that winds up and down the chain, and a capstan of the same purpose. In addition, there are a bollard and a bit for tying the cradle, and an underwater fair lead for guiding the cradle.

The bollard and bit are used to fix the mooring line on the deck and fix it. The fairyard is a guide member which guides the mooring line (rope or chain) installed below the sea surface of the fore or aft side of the offshore structure.

On the other hand, the offshore structures having the mooring facilities are moved from the shipyard / yard to the production area and started to operate. At this time, in order to safely transport the offshore structure, the equipment installed on the offshore structure is called sea- fastening.

In the underwater fairrid described above, an attachment such as a fixing bracket, a bolt, and a fixing pin are used to pass through the hull. However, in the case of such a seeding device, it may be impossible to disassemble after reaching the production area due to corrosion or deformation due to being located below the sea surface during transportation, and in addition to this, cutting by diver, ROV, There is a difficulty to do.

Korean Patent Publication No. 10-2013-0140828 (published on December 24, 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pair of fairing devices for an offshore structure capable of stably fixing fair lids for maritime transport of offshore structures.

The problems to be solved by the present invention are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an underwater watercraft comprising: an underwater pair lead installed at an outside of a hull; And an electromagnet fixing unit installed on the hull and fixing the underwater pair lead by a magnetic force; And an electromagnet controller for controlling a current supplied to the electromagnet fixing portion.

The electromagnet fixing unit may include: a first magnetic member installed in an inside of the hull; And a second magnetic member installed on the outside of the hull and connected to the first magnetic member and fixing the one end of the underwater pair lead by a magnetic force.

The second magnetic member or the second magnetic member may include an electromagnet or a member magnetized by the electromagnet.

The connector may further include a connecting member installed to penetrate the hull and connecting the first magnetic member and the second magnetic member.

The magnetic head further includes a guide cover movably disposed in the vertical direction along the second magnetic member and covering the underwater pair lead attached to the second magnetic member.

The second magnetic member may further include a guide rail for guiding the guide cover.

Further, the first magnetic member may include at least two electromagnetic plates, and the electromagnet controller may control a power supply for supplying electric current to each of the at least two electromagnetic plates.

According to the embodiment of the present invention, it is possible to fix the pair lead by using an electromagnet other than the bolt and pin fixing method, thereby achieving a remarkable effect of facilitating the unlocking operation of the pair lead after arrival in the production area.

According to the embodiment of the present invention, it is possible to unfreeze the pair lead by shutting off the power after arrival in the production area.

The effects of the present invention are not limited to the above-mentioned effects, and the effects not mentioned can be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a perspective view showing an offshore structure having a fairway seaming device according to the present invention.
FIG. 2 is a perspective view illustrating a fairing seeding device according to an embodiment of the present invention. FIG.
Figure 3 is a side view of the fairlead seeding device shown in Figure 2;
4 is a configuration diagram showing the electromagnet fixing unit.
5 is a view showing a battery connection structure with the first magnetic member.
Figs. 6 and 7 are views showing a state in which the attachment block of the underwater pair lead is mounted on the electromagnet fixing portion. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

1 is a perspective view showing an offshore structure having a fairway seaming device according to the present invention.

In the present invention, the offshore structure 20 comprises a floating natural liquefied natural gas (FLNG), a floating production storage off-loading (FPSO), a floating storage unit (FSU) ) And oil drill ship, and may include merchant ships, warships, fishing vessels, carriers, passenger ships and special work ships.

In addition, the offshore structure 20 collectively refers to a structure installed on the sea or under the sea, and includes all fixed, semi-submerged and floating offshore structures classified according to depth. Such an offshore structure 20 can be used mainly for exploration and harvesting of energy sources such as oil and natural gas, and can also be used for other leisure, harbor, and environmental facilities.

1, an offshore structure 20 according to an embodiment of the present invention includes a crane hull 22 and a top structure 24 provided on the top of the buoyant hull 22 can do. In this embodiment, the superstructure 24 may include a plurality of topside modules forming a unit block.

The buoyant hull 22 of the offshore structure is also provided with a plurality of chains 32, an underwater pair lead 100, an anchor (not shown), a chain traction device 34 Is required. The underwater fairlead 100 is fixed to the side of the buoyant hull 22 and the chain 32 can be coupled from the anchor to each of the chain pulling devices 34 on the deck via each underwater pair lead 100 have.

FIG. 2 is a perspective view illustrating a fairing seeding apparatus according to an embodiment of the present invention, FIG. 3 is a side view of the fairing seeding apparatus shown in FIG. 2, to be.

Referring to FIGS. 2 to 4, the fairlead seeding device 10 may include an underwater pair lead 100, an electromagnet fixing portion 200, and an electromagnet controller 300.

The underwater pair lead 100 is fixedly attached to the outer wall of the buoyant hull 22 to selectively restrict the movement of the chain provided from the chain pulling device and guide the movement direction of the chain connected to the chain pulling device . ≪ / RTI >

To this end, the underwater pair lead 100 may include a pair of lead housing 110 and a latch housing 120. The fairlead housing 110 may be pivotally mounted to an upper bracket 182 and a lower bracket 184 that are welded and secured to one side of the buoyancy hull 22 through a vertical first pivot joint 112 .

The latch housing 120 is pivotally connected to the pair lead housing 110. In one embodiment, the latch housing 120 may be connected to the pair lead housing 110 via a second pivot joint 122.

The pivotal connection between the pair lead housing 110 and the latch housing 120 is such that the latch housing 120 is pivotable relative to the pair lead housing 110 as shown by the arrows in Figure 6 in the direction of A do.

The second pivot joint 122 preferably has two planes oriented perpendicularly to the first pivot joint 112 and perpendicular to each other (e.g., the first pivot joint 112 is vertical, the second pivot joint (Not shown) by forming gimbaled joints that provide relative movement within the buoyancy hull 22, as shown in FIG. Gimbal joints extend the life of the chain by minimizing both intra-plane and out-of-plane bending stresses in the chain and inter-link chain wear.

Meanwhile, the latch housing 120 may be provided with a chain wheel 130 for guiding the chain. Although the chain wheel 130 is mounted on the latch housing 120 in this embodiment, the chain wheel 130 may be mounted on the pair lead housing 110.

On the other hand, an attachment block 128, which is fixed to the electromagnet fixing portion 20, is provided on an end surface of the latch housing 120. The attachment block 128 may be made of a magnetic material such as steel. For example, if the latch housing 1200 is in close contact with the second magnetic member 220 when rotated to the fixed position, the attachment block 128 may be omitted.

The electromagnet fixing part 200 is installed in the buoyancy type hull 22. The mounting position of the electromagnet fixing portion 200 can be mounted at a position facing the attachment block when the latch housing 120 is completely turned toward the right side of the underwater pair lead as viewed from the front side toward the buoyant hull 22 . The electromagnet fixing unit 200 is a means for sea-fastening the underwater pair lead 100 by a magnetic force when the offshore structure is transported to an operating site.

For example, the electromagnet fixing unit 200 may include a first magnetic member 210, a second magnetic member 220, and a guide cover 230.

The first magnetic member 210 is installed in the inside of the buoyancy type hull 22.

As shown in FIG. 5, the first magnetic member 210 may include two independent electromagnets 212 and 214 in case the power supply is interrupted. In addition, the two batteries 242 and 244, which are power supply units, can be connected to the two electromagnetic plates 212 and 214, respectively, to provide power. For example, in a general situation, only the first electroplate 212 is operated by the first battery 242, and in the unavoidable situation, the second electroplate 214 is operated by the second battery 244 . In addition, in the survival condition occurring in the transportation process, both of the two batteries 242 and 244 can be used simultaneously to amplify the fixing force of the underwater pair lead 100 by using the two electroplate plates 212 and 214 at the same time. Such current control to be supplied to the first magnetic member 210 can be controlled by the electromagnet controller 300.

Referring again to FIGS. 2 to 4, the second magnetic member 220 may be installed on the outside of the buoyant hull 22 opposite to the first magnetic member 210. The second magnetic member 220 is connected to the first magnetic member 210 by the connecting member 270. The connecting member 270 may pass through the buoyancy type hull 22 to connect the first magnetic member 210 and the second magnetic member 220. The second magnetic member 220 may include an electromagnet or a member that is magnetized by the first magnetic member 210. That is, a magnetic field is formed by supplying electric power to the first magnetic member 210, and a magnetic field is also formed in the second magnetic member 220 through the connecting member 270. By this magnetic force, the attachment block of the under water pair lead 128 can be fixed. A bottom plate 226 is welded to the lower end of the second magnetic member 220.

The guide cover 230 may be installed to be movable in a direction perpendicular to the second magnetic member 220. The guide cover 230 may be configured to cover the attachment block 128 of the underwater pair lead 100 attached to the second magnetic member 220. The second magnetic member 220 is provided with a guide rail 228 in a vertical direction and the guide cover 230 may include a rail 238 movable along the guide rail 228.

2) from the surface of the second magnetic member 220 when the attachment block 128 of the underwater pair lead 100 is fixed to the second magnetic member 220 The force to withstand the load is strong, but the force against the load applied in the horizontal direction Y (shown in FIG. 2) from the surface of the second magnetic member 220 may be weak. The guide cover 230 is attached to the second magnetic member 220 so as to hold the attachment block 128 of the underwater pair lead 100 in the horizontal direction.

The attachment of the guide cover 230 is performed in a state where the attachment block 128 of the under water pair lead is positioned on the second magnetic member 220. The mounting and removal of the guide cover 230 may be performed by connecting the crane lifting cable C to the hook 236 provided on the upper surface of the guide cover 230 and pulling it up or pulling it up.

Figs. 6 and 7 are views showing a state in which the attachment block of the underwater pair lead is mounted on the electromagnet fixing portion. Fig.

6 and 7, when the latch housing of the underwater pair lead is rotated to the fixed position, the attachment block of the latch housing is pulled by the attraction generated by the magnetic forces of the first magnetic member and the second magnetic member, As shown in FIG. The guide cover is mounted on the second magnetic member 220 to support the horizontal load of the attachment block 128 while the attachment block 128 of the under water pair lead is fixed to the second magnetic member 220.

As such, the offshore structures can be sea-fastened underwater by using electromagnets prior to transport from the shipyard / yard to the production area.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Underwater Fairlead 200; The electromagnet fixing portion
210: first magnetic member 220: second magnetic member
230: guide cover 300: electromagnet controller

Claims (6)

An underwater pair lead installed outside the hull;
An electromagnet fixing unit installed in the hull and fixing the underwater pair lead by a magnetic force; And
And an electromagnet controller for controlling a current supplied to the electromagnet fixing unit. The method according to claim 1,
The electromagnet fixing portion
A first magnetic member installed inside the hull; And
And a second magnetic member provided outside the hull and connected to the first magnetic member and fixing the one end of the underwater pair lead by a magnetic force. 3. The method of claim 2,
And a connecting member installed through the hull to connect the first magnetic member and the second magnetic member. 3. The method of claim 2,
Further comprising a guide cover movably disposed along the second magnetic member and covering the underwater pair lead attached to the second magnetic member. 5. The method of claim 4,
And the second magnetic member further comprises a guide rail for guiding the guide cover. 3. The method of claim 2,
The first magnetic member
Comprising at least two electroplates,
The electromagnet controller
And controls a power supply unit that supplies electric current to each of the at least two electroplate boards.
KR1020150134845A 2015-09-23 2015-09-23 Fairlead seafastening apparatus of marine structure KR101735330B1 (en)

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KR1020150134845A KR101735330B1 (en) 2015-09-23 2015-09-23 Fairlead seafastening apparatus of marine structure

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Application Number Priority Date Filing Date Title
KR1020150134845A KR101735330B1 (en) 2015-09-23 2015-09-23 Fairlead seafastening apparatus of marine structure

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KR101735330B1 KR101735330B1 (en) 2017-05-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107054567A (en) * 2017-06-09 2017-08-18 南通力威机械有限公司 A kind of fairlead under water
NO20230062A1 (en) * 2022-03-22 2023-09-25 Moray Innovation As Fairlead locking system and method of operation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130140828A (en) 2010-12-23 2013-12-24 바덱스 코퍼레이션 Fairlead latch device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130140828A (en) 2010-12-23 2013-12-24 바덱스 코퍼레이션 Fairlead latch device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107054567A (en) * 2017-06-09 2017-08-18 南通力威机械有限公司 A kind of fairlead under water
CN107054567B (en) * 2017-06-09 2023-11-17 南通力威机械有限公司 Underwater cable guiding device
NO20230062A1 (en) * 2022-03-22 2023-09-25 Moray Innovation As Fairlead locking system and method of operation

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KR101735330B1 (en) 2017-05-15

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