KR20170046850A - Turret structure of floating sea facility - Google Patents

Turret structure of floating sea facility Download PDF

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Publication number
KR20170046850A
KR20170046850A KR1020150146679A KR20150146679A KR20170046850A KR 20170046850 A KR20170046850 A KR 20170046850A KR 1020150146679 A KR1020150146679 A KR 1020150146679A KR 20150146679 A KR20150146679 A KR 20150146679A KR 20170046850 A KR20170046850 A KR 20170046850A
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KR
South Korea
Prior art keywords
turret
lower turret
floating
tube
turret structure
Prior art date
Application number
KR1020150146679A
Other languages
Korean (ko)
Inventor
송시명
심우승
정종진
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150146679A priority Critical patent/KR20170046850A/en
Publication of KR20170046850A publication Critical patent/KR20170046850A/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
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B63B21/507—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets
    • 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
    • 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
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]

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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)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Disclosed is a turret structure of a floating marine installation. According to an embodiment of the present invention, the turret structure of a floating marine installation calculates a degree of rotation of a lower turret compared to an initial value by photographing a first marker formed on a bottom surface of the lower turret using a camera installed on a lower side of a moon pool. Then, the turret structure calculates a degree of rotation and degree of position change of a tube compared to an initial value by photographing a second marker formed on a bottom surface of the tube. Thereafter, the turret structure accurately positions the lower turret at a predetermined position of the moon pool by correcting the rotated lower turret, and the tube at a predetermined position of the moon pool. Accordingly, a floating marine installation is able to float stably in the sea when supported by a mooring system installed on a turret structure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a turret structure of a floating water-

The present invention relates to a turret structure of a floating marine facility capable of precisely positioning and installing a turret structure at a predetermined position of the float of a floating marine facility.

Floating Sea Facility such as drillships, drillships, floating production storage and off-loading (FPSO), or floating storage and re-gasification unit (FSRU) must maintain a constant position in the sea during operation.

Floating marine equipment maintains a constant position in the sea by the mooring line of a mooring system such as a chain that has fallen from the turret structure installed in a floating marine facility to the sea floor. One side of the turret structure is floated It is installed in the Moon Pool formed in the maritime equipment.

The turret structure has a lower turret installed on a platform such as a lower turret inserted into a portal and a deck of a floating marine facility and a table in which a plurality of tubes through which a mooring line respectively passes and a mooring line are stored inside the lower turret Respectively.

The lower turret is supported by a marine crane and inserted into the portal. When the lower turret is supported by a marine crane and the lower turret is lowered by a predetermined distance, the lower turret is supported on a support formed on the lower side of the portal. Since a plurality of tubes through which a mooring line such as a chain or the like passes are installed in the inside of the lower turret, the tube installed inside the lower turret and the lower turret must be accurately installed at a predetermined position of the platform to allow the floating water- can do.

A method of installing a turret structure in a conventional float-type marine facility will be described.

A marine crane supports the lower turret of the turret structure, and then the lower turret is inserted into the portal and lowered. At this time, the lowered distance of the lower turret is checked while observing the camera installed on the lower side of the frame.

Even after the lower turret is inserted into the platform and mounted on the support, the lower turret can be rotated by wind, waves or algae. Therefore, the lower turret and the tube can be precisely positioned at a predetermined position of the frame, by rotating and correcting the lower turret in the direction opposite to the direction in which the lower turret is rotated. Then, when the lower turret and the tube are accurately positioned at the predetermined position of the door frame, the lower turret is fixed to the door frame by welding or the like.

Conventionally, a marker displayed on the outer circumferential surface of the door frame and markers displayed on the outer circumferential surface of the lower turret were visually inspected by the operator, and the degree of rotation of the lower turret was checked, and then the lower turret was positioned at a predetermined position of the door frame. This makes it difficult to accurately position the lower turret at a predetermined position on the door frame, so that when the floating system is installed in the turret structure to support the floating system, there is a possibility that the floating system can not be stably floated at sea.

In addition, since there is no means to confirm whether the tubes installed in the lower turret are located at the predetermined positions of the platform, when floating systems are installed in the turret structure to install floating systems, There is a concern that it may not float more stably.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a turret structure of a floating marine facility capable of solving all the problems of the prior art as described above.

It is another object of the present invention to provide a turret structure which can accurately position a lower turret and a tube installed in a lower turret at predetermined positions of the turret structure and, when a floating system is installed in a turret structure, It may be to provide a turret structure of a floating marine facility in which floating marine installations can be floated stably in the sea.

The turret structure of the floating marine facility according to the present embodiment is inserted into a Moon Pool of a floating marine facility and the other side of the mooring line of a mooring system A lower turret having a plurality of tubes through which the moorings pass and a table on which the mooring lines are stored; And an upper turret installed on a platform of the floating facility and supported on the other side of the mooring line passing through the tube, wherein the outer surface of the lower end surface of the lower turret is supported by a camera At least three first markers may be formed.

The turret structure of the floating saline facility according to the present embodiment calculates the degree of rotation of the lower turret by comparing the initial marker with a first marker formed on the lower end surface of the lower turret by using a camera installed on the lower side of the culture pile. Then, the second marker formed on the lower end surface of the tube is taken and compared with the initial value to calculate the position change degree and rotation degree of the tube. Thereafter, when the turret structure is provided with a mooring system to support a floating marine facility, since the rotated lower turret is corrected, the lower turret is accurately positioned at a predetermined position of the door frame, and the tube is accurately positioned at a predetermined position , It is possible that the floating type of marine equipments can float stably in the sea.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a floating marine facility equipped with a turret structure according to an embodiment of the present invention; FIG.
2 is a bottom view of the bottom turret of the turret structure shown in Fig.

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

It should be understood that the term "and / or" includes all possible combinations from one or more related items. For example, the meaning of "first item, second item and / or third item" may include not only the first item, the second item or the third item but also two of the first item, Means a combination of all items that can be presented from the above.

It is to be understood that when an element is referred to as being "connected or installed" to another element, it may be directly connected or installed with the other element, although other elements may be present in between. On the other hand, when an element is referred to as being "directly connected or installed" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

In each step, the identification codes (for example, S100, S110, S120, etc.) are used for convenience of explanation, and the identification codes do not describe and explain the order of each step, Unless the order is described, it may happen differently from the stated order. That is, each step may occur in the same order as described, may be performed substantially concurrently, or may be performed in reverse order.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a turret structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of a floating marine facility equipped with a turret structure according to an embodiment of the present invention, and FIG. 2 is a bottom view of a lower turret of the turret structure shown in FIG. 1.

As shown in the figure, the floating type water treatment facility 100 is a facility for floating in the sea or underwater by buoyancy of seawater. It is used for drilling, drilling, floating production storage and off-loading (FPSO) Re-gasification Unit).

The drill ship is a ship-type facility designed to perform oil and gas drilling operations in the sea where deep water or deep waves can not be installed, FPSO is a specialized vessel capable of refining crude oil extracted from offshore plant or drill ship and storing it and loading and unloading it at other transfer sites. FSRU receives LNG from sea and stores it as liquid, regenerates it, It is an offshore plant that can do.

During operation of the floating marine facility 100, the floating marine facility 100 must maintain a constant position in the sea. A mooring system is used to allow the floating marine facility 100 to maintain a constant position in the sea and one side of the mooring line 50 of the mooring system such as a chain is supported on the seabed, Is supported on a turret structure (150) of a floating marine facility (100).

In detail, the turret structure 150 may include a lower turret 151 and an upper turret 155, and a Moon Pool, which is a cylindrical cavity, is formed at a central portion of one side of the floating water- (110) may be formed.

The lower turret 151 may be inserted into the door 110 and the upper turret 155 may be installed on the platform 130 such as the deck of the floating water treatment facility 100. A plurality of tubes 152 through which the mooring line 50 passes may be installed in the lower turret 151 and a table (not shown) in which the mooring line 50 is stored may be installed.

The other end side of the mooring line 50 is supported by the upper turret 155 and the mooring line 50 can be wound or unwound by the upper turret 155. The mooring line 50 wound by the upper turret 155 can be stored in the table.

The lower turret 151 is supported by a marine crane and is inserted into the door frame 110. When the door is lowered by a predetermined distance, the lower turret 151 is supported by a support base 112 formed on a lower portion of the door frame 110.

Two cameras 120 may be installed on the lower side of the door frame 110 to calculate the distance lowered by the lower turret 151 and on the outer peripheral side of the lower end surface of the lower turret 151, Three first markers 150a, 150b and 150c may be formed radially with respect to the center of the lower turret 151,

Even after the lower turret 151 is inserted into the support 110 and mounted on the support 112, the lower turret 151 can be rotated by wind, waves or algae. If the lower turret 151 rotates and is not correctly positioned at the predetermined position of the door 110, the floating turndown facility can not stably float on the sea, The lower turret 151 should be fixed to the door 110 by welding or the like while being accurately positioned at a predetermined position of the lower turret 151.

The turret structure of the floating type marine equipment according to the present embodiment can calculate the degree of rotation (degree) of the lower turret 151 using the camera 120 and the first markers 150a, 150b and 150c.

The first marker 150a, 150b, 150c captured on the camera 120 is set in the camera 120 with the initial value at which the first marker 150a, 150b, 150c of the lower turret 151 should be positioned. And 150c of the lower turret 151 with respect to the initial value. When the lower turret 151 is corrected by the calculated rotation angle, the lower turret 151 can be accurately positioned at a predetermined position of the door 110.

The turret structure of the floating marine facility according to the present embodiment may use the tube 152 to more accurately locate the lower turret 151 at a predetermined position of the door 110. [

Three second markers 152a, 152b and 152c are radially formed on the outer peripheral surface of the lower end surface of at least one tube 152 of the plurality of tubes 152 with respect to the center of the tube 152 . Thus, the initial values of the second markers 152a, 152b, and 152c captured on the camera 120 are compared with the initial values of the second markers 152a, 152b, and 152c, And the degree of rotation and degree of rotation of the tube 152 can be calculated.

Then, by correcting the lower turret 151 by the calculated rotation angle, the tube 152 and the lower turret 151 can be precisely positioned at a predetermined position of the door 110. [

The turret structure of the floating marine facility according to the present embodiment uses first cameras 150a, 150b and 150c formed on the lower end surface of the lower turret 151 using the camera 120 installed on the lower side of the door frame 110 And the degree of rotation of the lower turret 151 is calculated by comparing it with the initial value. Next, the second marker 152a, 152b, 152c formed on the lower end surface of the tube 152 is taken and compared with the initial value to calculate the position change degree and rotation degree of the tube 152. The lower turret 151 is then corrected so that the lower turret 151 is accurately positioned at a predetermined position of the door 110 and the tube 152 is precisely positioned at a predetermined position of the door 110, When the mooring system is installed in the structure 100 to support the floating marine equipment, the floating marine equipment can float stably in the sea.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of. Therefore, the scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention.

100: Floating marine equipment
110:
120: camera
130: Platform
150: Turret structure
151: Lower turret
152: tube
155: upper turret

Claims (3)

A plurality of tubes which are inserted into a Moon Pool of a floating marine facility and through which the other side of the mooring line of the mooring system having one side portion supported on the sea bed and the mooring line are stored A lower turret in which a table is installed;
And an upper turret installed on a platform of the floating marine facility and supporting the other side of the mooring line passing through the tube,
Wherein at least three first markers are formed on the outer peripheral surface side of the lower end surface of the lower turret, the first markers being detected by a camera installed on the door pool. The method according to claim 1,
Wherein at least three second markers are formed on an outer circumferential surface of a lower end surface of at least one of the plurality of tubes, the second marker being detected by the camera. 3. The method according to claim 1 or 2,
Wherein the first marker and the second marker are formed radially with respect to the center of the lower turret and the tube, respectively.
KR1020150146679A 2015-10-21 2015-10-21 Turret structure of floating sea facility KR20170046850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150146679A KR20170046850A (en) 2015-10-21 2015-10-21 Turret structure of floating sea facility

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Application Number Priority Date Filing Date Title
KR1020150146679A KR20170046850A (en) 2015-10-21 2015-10-21 Turret structure of floating sea facility

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KR20170046850A true KR20170046850A (en) 2017-05-04

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KR1020150146679A KR20170046850A (en) 2015-10-21 2015-10-21 Turret structure of floating sea facility

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116803837A (en) * 2023-07-31 2023-09-26 招商局重工（江苏）有限公司 Single-point mooring system and installation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116803837A (en) * 2023-07-31 2023-09-26 招商局重工（江苏）有限公司 Single-point mooring system and installation method thereof

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