KR101854827B1 - Apparatus for transferring cargo of floating structure - Google Patents

Apparatus for transferring cargo of floating structure Download PDF

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Publication number
KR101854827B1
KR101854827B1 KR1020170059187A KR20170059187A KR101854827B1 KR 101854827 B1 KR101854827 B1 KR 101854827B1 KR 1020170059187 A KR1020170059187 A KR 1020170059187A KR 20170059187 A KR20170059187 A KR 20170059187A KR 101854827 B1 KR101854827 B1 KR 101854827B1
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KR
South Korea
Prior art keywords
arm
balance
pinion gear
cargo transfer
rack gear
Prior art date
Application number
KR1020170059187A
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Korean (ko)
Inventor
전상배
박용환
김정
박태윤
송창우
이성주
Original Assignee
삼성중공업 주식회사
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Priority to KR1020170059187A priority Critical patent/KR101854827B1/en
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Publication of KR101854827B1 publication Critical patent/KR101854827B1/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
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

Disclosed is a cargo transfer apparatus for a floating structure. According to an embodiment of the present invention, the cargo transfer apparatus for a floating structure comprises: a first arm having a connection unit for coupling with another structure and having a reception space formed therein; a second arm accommodated in the first arm and provided so as to be drawn out to one end of the first arm; a balance arm which is accommodated in the first arm at one side and is provided to be drawable at the other end of the first arm to adjust weight; and the balance holding unit drawing the balance arm in cooperation with a pulling operation of the second arm, and maintaining balance of the weight on both sides with respect to the connection unit.

Description

[0001] APPARATUS FOR TRANSFERING CARGO OF FLOATING STRUCTURE [0002]

The present invention relates to a cargo transfer apparatus for a floating structure.

Generally, LNG refers to a colorless transparent cryogenic liquid which is cooled to -163 ºC and whose volume is reduced to 1 / 6,000,000 by natural gas containing methane as its main component.

Such liquefied natural gas is stored in a cryogenic tank at atmospheric pressure or higher, and is subjected to a regeneration process in which the temperature is raised and then converted into a gas form.

Conventionally, when the liquefied natural gas carrier arrives at the destination port, the liquefied natural gas is unloaded and regenerated at the land based LNG terminal. However, recently, safety requirements for dangerous materials have been strengthened, and it has been proposed to provide dangerous facilities on the sea, rather than on land where people reside.

As a result, the process of unloading and regasification of liquefied natural gas has also emerged in the sea, including floating storage and regasification units (LNG-FSRU), floating liquefied natural gas Floating structures such as LNG-FPSO (Floating Production Storage Offloading).

With the advent of such floating structures, the need for a cargo transfer device capable of cargo transfer between floating structures and liquefied natural gas carrier (hereinafter referred to as? 儲 釜) directly at sea is highlighted.

Accordingly, a variety of cargo transfer devices and systems have been developed. Among them, the STS (Ship To Ship) method for transferring cargoes while floating structures and cargo carriers are positioned side by side is a representative example Cargo transfer system.

In order to transport the cargo by the STS method, a loading arm may be generally used. The loading arm installed in the floating structure is connected to the manifold provided on the deck of the carrier, so that the fluid cargo (for example, LNG) stored in the floating structure can be transferred to the carrier.

Although the position of the manifold of the carrier is mostly specified, there is a carrier which changes its position depending on the type of the ship. Therefore, the loading arm, which is not adjusted in length when transporting the fluid cargo, .

Korean Registered Patent No. 10-1349884 (Registered on April 1, 2013)

In order to solve the above-described problems, an embodiment of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a loading / unloading apparatus and a loading / The present invention is to provide a cargo transfer apparatus of a floating structure capable of maintaining the overall weight balance by being automatically adjusted in position in conjunction with the operation of the car.

According to an aspect of the present invention, there is provided a portable terminal comprising: a first arm coupled to a connection portion for connection with another structure; A second arm received within the first arm and provided so as to be drawable to one end of the first arm; A balance arm which is accommodated in the first arm at one side and is drawably provided at the other end of the first arm to adjust the weight; And a balance holding unit for pulling out the balancer arm in conjunction with the pulling operation of the second arm and maintaining balance of both sides with respect to the connecting portion.

The balance holding unit may further include: a first rack gear provided to the balancing arm along the longitudinal direction of the balancing arm; A second rack gear provided on the second arm along a longitudinal direction of the second arm; A first pinion gear rotatably engaged with the first rack gear and moving the first rack gear to pull out the ball arm; And a second pinion gear that is formed to have the same rotation center as that of the first pinion gear to be rotated in association with the first pinion gear and is engaged with the second rack gear portion to draw the second arm .

A driving unit may be connected to the first pinion gear or the second pinion gear.

In addition, a balance can be additionally provided on the other side of the balance arm.

In addition, when the structure is a support provided on the floating structure, a fluid cylinder supporting the load may be provided between the support and the first arm.

The balance arm is disposed on the inner side of the first arm, the second arm is disposed on the inner side of the balanced arm, and the balanced arm and the second arm are disposed on opposite sides of the first arm with respect to the telescopic The length can be stretched.

According to the embodiment of the present invention, when the fluid cargo is transported in the floating structure, the length of the loading arm is freely stretched in a telescopic manner, and when the length of the loading arm is extended, The overall weight balance of the cargo transfer device can be maintained.

FIG. 1 is a plan view showing a state in which a cargo is transferred from a floating structure to a carrier by an STS (Ship To Ship) method.
2 is a side view schematically showing a cargo transfer apparatus of a floating structure according to an embodiment of the present invention.
FIG. 3 is a block diagram showing the configuration and structure of a main part in a cargo transfer apparatus of a floating structure according to an embodiment of the present invention.
4 is a sectional view showing the line AA in Fig.
5 is an operational state diagram illustrating a state in which a balancer arm is automatically drawn out according to the elongation of a second arm in a cargo transfer apparatus of a floating structure according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations and operations according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION The following description is one of many aspects of the claimed invention and the following description may form part of the detailed description of the invention.

However, the detailed description of known configurations or functions in describing the present invention may be omitted for clarity.

While the invention is susceptible to various modifications and its various embodiments, it is intended to illustrate the specific embodiments and 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.

Terms including ordinals such as first, second, etc. may be used to describe various elements, but the elements are not limited by such terms. These terms are used only to distinguish one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cargo transfer apparatus for a floating structure according to an embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 1, the floating structure 1 may be stored with a fluid such as liquefied natural gas (LNG) or petroleum. The cargo transfer apparatus 10 may be provided in the floating structure 1 to smoothly transfer the fluid cargo to a customer (for example, a carrier or a terminal provided at a port).

It is also possible to place the floating structure 1 side by side on the side of the carrier 2 and install the damper 3 therebetween to prevent direct collision between the floating structure 1 and the carrier 2, An example of an STS (Ship To Ship) method of transferring a fluid cargo from a floating structure 1 to a carrier 2 using a transfer device 10 is illustrated by way of example.

However, the cargo transfer apparatus 10 of the floating structure 1 according to the present embodiment can be applied not only to the STS system, but also to a case where the cargo is transferred to various demanding places such as a port terminal or a freight car.

Detailed configuration and structure of the cargo transfer apparatus 10 of the floating structure according to the present embodiment will be described with reference to Figs. 2 and 3. Fig.

2 and 3, the cargo transfer apparatus 10 of the floating structure according to the present embodiment includes a first arm 100, a second arm 200, a balance arm 300, (400) as a basic configuration.

In addition, the present embodiment can also be applied to other structures (for example, a support) to which the first arm 100 is pivotally connected, as well as a fluid storage (for example, (Liquefied natural gas, liquefied petroleum gas, oil, etc.) can be smoothly transported to other consumers outside the floating structure 1 (for example, a carrier 2, a terminal installed in a port, or a cargo transportation vehicle) (Not shown).

Here, the structure may be another loading arm pivotally connected to the first arm 100, or may be a support 500 installed on the floating structure 1. Since the loading hose 600 is a well-known technique in general, a detailed description thereof will be omitted. Hereinafter, the basic configuration of this embodiment will be mainly described.

The first arm 100 may be coupled with a connection portion 110 for connection with another structure (e.g., the support 500 or another loading arm). Here, the connection part 110 may be a hinge for pivoting the first arm 100, or may be a rivet or a fixing pin for fixing the first arm 100 without moving.

2, a fluid cylinder 120 (not shown) for supporting a load is provided between the support base 500 and the first arm 100. In this case, ) May be provided.

The fluid cylinder 120 is actuated by hydraulic or pneumatic pressure and can support the load by increasing or decreasing its length and by providing force to the first arm 100 as necessary to reduce the angle of the first arm 100 Can be adjusted.

As shown in FIG. 3, the first arm 100 is an element constituting a part of the present embodiment (also referred to as a loading arm), and may have a predetermined length, and a predetermined accommodation space may be formed therein .

The second arm 200 is a component that constitutes another part of the present embodiment. The second arm 200 is received in the first arm 100 and is drawn out to one end of the first arm 100 And may have a predetermined length along the same direction as the longitudinal direction of the first arm 100.

That is, one end of the second arm 200 is received in the first arm 100 so as to be exposed or protruded out of one end of the first arm 100, and the second arm 200 is received in the first arm 100 The length may be stretched in a telescopic manner.

Here, the telescopic system means a structure in which another body is built in a hollow body such as a telescope and is drawn out so that the whole length can be expanded and contracted.

The first arm 100 and the second arm 200 may have a hollow cylinder structure having different diameters, but may have a hollow frame structure having a rectangular cross section as shown in FIG. 4, The sectional shape of the arm 100 and the second arm 200 can be appropriately selected in accordance with the needs of the practitioner.

The other end of the ballast arm 300 is extended to the other end of the first arm 100 and the other end of the ballast arm 300 is exposed to the other end of the first arm 100, 300 may have a counterweight 310 having a predetermined weight.

Since the first arm 100 and the second arm 200 are elongated to one side, the counterweight 310 is used to balance the weight of the both ends of the first arm 100 and the second arm 200 with respect to the connecting portion 110 of the first arm 100 Can be provided. The weight of the counterweight 310 can be set appropriately in consideration of the overall weight balance of the cargo transferring apparatus 10. [

The balance holding unit 400 may be provided to pull out the balancer arm 300 in conjunction with the pulling operation of the second arm 200 and to maintain balance of weight on both sides of the connecting part 110 .

3, before the second arm 200 is substantially received in the first arm 100 and is drawn out to the outside of the first arm 100, the balance holding unit 400 is rotated in the counterclockwise direction The balance arm 300 is received in the first arm 100 so that the second arm 200 is positioned close to the connection unit 110 and the second arm 200 is moved to the outside of the first arm 100 as shown in FIG. The weight of the side where the second arm 200 is pulled out is drawn out, so that the balance arm 300 is drawn out in a direction opposite to the drawing direction of the second arm 200 in order to balance the weight of the second arm 200, So that the overall balance can be maintained.

Therefore, since the weight of both sides of the first arm 100 is balanced by the balance holding unit 400, the load applied to the fluid cylinder 120 shown in FIG. 2 is minimized It is possible to use a small-sized fluid cylinder 120 having a small output.

3 and 4, the balancing unit 400 includes a first rack gear 410, a second rack gear 420, a first pinion gear 430 and a second pinion gear 440, . ≪ / RTI >

The first rack gear 410 is an element provided along the longitudinal direction of the balancer arm 300 on one side of the balancer arm 300. The first rack gear 410 rotatably supports the inner bottom surface of the balancer arm 300 As shown in FIG.

The second rack gear 420 is an element formed along the longitudinal direction of the second arm 200 on one side of the second arm 200 and the second rack gear 420 is an element formed on the inner side of the second arm 200 Can be formed on the ceiling.

The first pinion gear 430 can be rotatably engaged with the first rack gear 410 in the second arm 200. The first pinion gear 430 is rotatably engaged with the first rack gear 410 by the rotation of the first pinion gear 430, The rack gear 410 may be moved so that the balance arm 300 is pulled out of the first arm 100. [

The second pinion gear 440 may be formed to have the same center of rotation in the first pinion gear 430 so as to rotate in conjunction with the first pinion gear 430 in the second arm 200. The second pinion gear 440 is engaged with the second rack gear 420 so that the second rack gear 420 can be moved when the second pinion gear 440 rotates, Can be taken out.

Here, a separate driving unit 450 may be connected to the first pinion gear 430 or the second pinion gear 440. 4, the driving unit 450 is illustrated as being connected to the first pinion gear 430, but this is merely an example, and the driving unit 450 may be power-connected to the second pinion gear 440. In this embodiment, the driving unit 450 is a bi-directional motor capable of both forward and reverse rotation. However, the driving unit 450 is not limited to the motor, and other means (for example, an engine) may be applied.

Referring to FIG. 4, the first arm 100 may have a hollow frame structure having a rectangular cross section, and a ball arm 300 may be slidably accommodated inside the first arm 100 have. The balancer arm 300 may also have a hollow frame structure having a rectangular cross section.

The second arm 200 may be slidably received in the inside of the ballast arm 300. The second arm 200 may have a hollow frame structure having a rectangular cross section, An opening 210 may be formed in a lower part. Accordingly, the balance arm 300 and the second arm 200 can be stretched in a telescopic manner toward the opposite direction with respect to the first arm 100.

The first rack gear 410 formed on the bottom surface of the flat type arm 300 is positioned inside the second arm 200 through the opening 210, The first pinion gear 430 can be engaged with the first pinion gear 430. [ The second pinion gear 440 formed integrally with the first pinion gear 430 is disposed inside the second arm 200 and is coupled to the second rack gear 420 formed on the ceiling of the second arm 200, Respectively.

While the present invention has been described in connection with what is presently considered to be preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention is not limited thereto.

1: Floating structure 2: Carrier
3: damper 10: cargo transfer device
100: first arm 110:
120: fluid cylinder 200: second arm
210: opening 300:
310: Balance weight 400: Balancing unit
410: first rack gear 420: second rack gear
430: first pinion gear 440: second pinion gear
450: driving part 500: support part
600: Loading hose

Claims (6)

A first arm coupled to a connection portion for connection with another structure and having a receiving space formed therein;
A second arm received within the first arm and provided so as to be drawable to one end of the first arm;
A balance arm accommodated in the first arm on one side and drawn out on the other end of the first arm; And
And a balance holding unit for pulling out the balance arm in conjunction with the drawing operation of the second arm and maintaining balance of the weight on both sides with respect to the connecting portion,
Cargo transfer system for floating structures. The method according to claim 1,
The balance holding unit includes:
A first rack gear provided on the balance arm along the longitudinal direction of the balance arm;
A second rack gear provided on the second arm along a longitudinal direction of the second arm;
A first pinion gear rotatably engaged with the first rack gear and moving the first rack gear to pull out the ball arm; And
And a second pinion gear which is formed to have the same center of rotation as the first pinion gear to be rotated in association with the first pinion gear and which is engaged with the second rack gear to draw the second arm.
Cargo transfer system for floating structures. 3. The method of claim 2,
Wherein a driving unit is connected to the first pinion gear or the second pinion gear,
Cargo transfer system for floating structures. The method according to claim 1,
And a balance is further provided on the other side of the balance arm,
Cargo transfer system for floating structures. The method according to claim 1,
Wherein a fluid cylinder for supporting a load is provided between the support and the first arm when the structure is a support provided on a floating structure,
Cargo transfer system for floating structures. The method according to claim 1,
Wherein the balance arm is disposed on the inner side of the first arm, the second arm is disposed on the inner side of the balanced arm, and the balanced arm and the second arm are disposed opposite to each other with respect to the first arm in a telescopic manner As a result,
Cargo transfer system for floating structures.
KR1020170059187A 2017-05-12 2017-05-12 Apparatus for transferring cargo of floating structure KR101854827B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120050791A (en) * 2010-11-11 2012-05-21 삼성중공업 주식회사 Floating structure and control method thereof
KR20130095081A (en) * 2012-02-17 2013-08-27 주식회사에스티엑스종합기술원 Gas hydrate loading and unloading apparatus and transport ship connectable to the same
KR101349884B1 (en) 2012-03-07 2014-01-13 삼성중공업 주식회사 Device for transferring liquid cargo
KR20140025700A (en) * 2012-08-22 2014-03-05 대우조선해양 주식회사 Compatible loading system for lng carrier
KR20170032573A (en) * 2015-09-15 2017-03-23 삼성중공업 주식회사 Loading arm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120050791A (en) * 2010-11-11 2012-05-21 삼성중공업 주식회사 Floating structure and control method thereof
KR20130095081A (en) * 2012-02-17 2013-08-27 주식회사에스티엑스종합기술원 Gas hydrate loading and unloading apparatus and transport ship connectable to the same
KR101349884B1 (en) 2012-03-07 2014-01-13 삼성중공업 주식회사 Device for transferring liquid cargo
KR20140025700A (en) * 2012-08-22 2014-03-05 대우조선해양 주식회사 Compatible loading system for lng carrier
KR20170032573A (en) * 2015-09-15 2017-03-23 삼성중공업 주식회사 Loading arm

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