KR20170029209A

KR20170029209A - Mooring apparatus for mooring between floating bodies

Info

Publication number: KR20170029209A
Application number: KR1020150126239A
Authority: KR
Inventors: 한대석
Original assignee: 현대중공업 주식회사
Priority date: 2015-09-07
Filing date: 2015-09-07
Publication date: 2017-03-15

Abstract

A mooring apparatus for mooring between floating bodies comprises: a support unit which is fixated and installed on a lateral side of a hull of a first floating body; a joining unit which has one end portion hinged and fixated to a support unit to be vertically folded toward the hull or to be unfolded in one straight line in accordance with the direction of hinge pivot; and an electromagnet mooring unit which is installed on the other end portion of the joining unit, is attached to the hull of a second floating body, which is located nearby from the magnetic force, in a state that the joining unit is unfolded, and moors the second floating body. Accordingly, alignment of facilities on an upper side of a deck and utilization of space can be performed in an easy manner without change of a hull structure or a decrease of strength. In addition, efficient and stable mooring can be performed within a short time by considering the characteristics of marine mooring between floating bodies. Moreover, the mooring apparatus for mooring between floating bodies has a buffering function so installation of a large fender for buffering shock during mooring can be eliminated.

Description

[0001] MOORING APPARATUS FOR MOORING BETWEEN FLOATING BODIES [0002]

The present invention relates to a mooring device, and more particularly to a mooring device for mooring between sub-fluids.

Floating marine structures are not only capable of pre-treating, processing (eg liquefying) and storing natural gas (or crude oil, etc.) from a submarine gas field at sea for a long period of time while anchoring the stored liquefied gas to a carrier (eg, LNG carrier , A shuttle tanker, etc.).

Floating marine structures include LNG-FPSO (LNG-Floating, Production, Storage, and Offloading), FLNG (Floating Liquefaction Natural Gas) (Floating, Production, Storage, and Offloading) "," Floating (crude oil) production, storage and unloading facility ".

In general, the floating structure is equipped with a storage tank for storing LNG, LPG, condensate and the like in a hull part on the lower side of the main deck, A processing module for processing and liquefying natural gas mined, a cargo handling facility for loading and unloading, and a living quarter for workers to live.

Unlike vessels that transport cargo while operating on the ocean, these floating structures perform operations at sea for a long period of time, so that the liquefied gas stored in the storage tanks may float the carrier such as an eluent carrier or shuttle tanker The ship is moored close to the sea structure and then transported using the loading facility.

In order to supply (unload) the liquefied gas from the floating floating structure to the carrier, the floating fluid structure and the two fluids of the carrier should be connected to each other.

Side-by-side mooring is one of the methods for mooring a carrier on floating structures.

The parallel mooring approach approaches the carrier to the side of the floating marine structure and then binds the floating marine structure and carrier to the hook, fair leader, mooring line (eg, rope, chain, wire) .

Mooring devices, including hooks, fairleaders, mooring lines, etc., are normally installed on the upper surface of the main deck of the ship.

On the main deck, there are many facilities such as the above-mentioned various process modules, cargo handling facility and residence, so that when the mooring system is installed on the main deck, the space above the main deck becomes narrow / complicated, There is a problem.

However, in such a case, it is necessary to change the surrounding structure in order to secure a space for installing the mooring device, and in case the strength of the hull is lowered due to the structural change, There is a problem that it must be reinforced.

In addition, unlike the case where one side is fixed (for example, when a ship is riding on the inner wall of a port), the mooring between the floating type floating structure and the carrier is a marine type mooring, In the conventional mooring system, the characteristics of marine mooring between floats are not considered sufficiently, so there is a limitation in that efficient and stable mooring is difficult.

Korean Patent Publication No. 10-2014-0052349, Disclosure Date: 2014. 05. 07.

The present invention has been made in order to solve the problems of the conventional art as described above, and its object is to provide a simplified structure using the function of an electromagnet for parallel mooring between floats, And to provide a mooring device for mooring between floats to facilitate facility alignment and space utilization.

It is another object of the present invention to provide a mooring apparatus for mooring between sub-fluids that enables efficient and stable mooring in a short time in consideration of the characteristics of marine mooring between floats.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not to be construed as limiting the invention as defined by the appended art. It will be possible.

According to an aspect of the present invention, there is provided a mooring apparatus for mooring between floats, comprising: a support fixedly installed on a side surface of a hull of a first float; A connecting part having one end hinged to the supporting part so as to be vertically folded or straight to the hull along the hinging direction; And an electromagnet mooring part installed at the other end of the connection part and attached to the hull of the second subordinate fluid which is in proximity to the first subordinate fluid by the magnetic force in the unfolded state of the connection part to moor the second subordinate fluid.

In the mooring device for mooring between floats according to the present invention, one end of the connecting portion is coupled to the supporting portion so as to be rotatable up and down and left and right by a certain amount, and the other end is inserted and fixed with a gap in the coupling groove in the electromagnet flow portion .

In the mooring apparatus for mooring between floats according to the present invention, the electromagnet mooring unit comprises: a body; An electromagnet provided on one surface of the body and temporarily holding the second sub-fluid by a magnetic force; And a bollard fixture which is pulled outward from the inside of the body and fixed to the bollard of the second sub-fluid in a state where the second float is temporarily held by the electromagnet.

In the mooring apparatus for mooring between floats according to the present invention, the bollard fixing portion may be forwardly driven from the inside of the body to be mechanically fastened to the bollard after being inserted into the bollard hole.

The mooring device for mooring between floats according to the present invention may further include a side fender movably coupled to the body in the longitudinal direction.

In the mooring apparatus for mooring between floats according to the present invention, when approaching the second floating body, the electromagnet is in an operation stop state, the bollard fixing section is in a pulled-in state, the side fender is in a protruded state, The side fender is retracted upon contact with the fluid, the electromagnet is operated to hold the second float, the bollard fixing portion is drawn out during holding, and is drawn into the bollard hole for fastening with the bollard, The bollard fastening portion is fastened and fixed to the bollard in the hole, and after the fastening, the electromagnet is stopped, the side fenders are projected again, and the body can be retracted by a certain distance.

In the mooring device for mooring between floats according to the present invention, a joint ball is formed at an end of the connecting portion to be coupled to the body, and a coupling groove formed in the body surface in correspondence with the joint ball is provided, A cushioning member is provided around the fastening groove, and the joint ball can be inserted and installed with a gap so as to be able to flow in the fastening groove.

In the mooring apparatus for mooring between floats according to the present invention, the supporting unit comprises: a base attached to a side surface of the hull of the first float; A first moving plate movably coupled to the base in a lateral direction; A second moving plate movably coupled to the first moving plate in a vertical direction; And a link portion fixed to the second moving plate and hinged to one end of the connecting portion to allow the connecting portion to be folded or unfolded in a hinged direction.

In the mooring device for mooring between floats according to the present invention, the support portion is provided on both left and right sides of the first moving plate, and is provided with a pair of buffer springs to mitigate impact due to lateral movement; And a pair of buffer springs installed on both upper and lower sides of the second moving plate for alleviating an impact caused by the upward and downward movements.

According to the mooring apparatus for mooring between floats of the present invention, a simplified structure using the function of the electromagnet for parallel mooring between floatings is implemented, thereby making it possible to arrange the facilities on the upper deck and space utilization without changing hull structure or strength It can be facilitated.

In addition, according to the mooring apparatus for mooring between sub-fluids of the present invention, efficient and stable mooring can be realized in a short time in consideration of the characteristics of marine mooring between sub-muds.

In addition, according to the mooring apparatus for mooring between floats of the present invention, it is possible to omit the installation of a separate large fender in order to minimize impact upon mooring by having a buffer function of itself.

1 is a conceptual diagram for a schematic understanding of a mooring apparatus for mooring between floats according to an embodiment of the present invention;
FIG. 2A and FIG. 2B are views showing the use state of the mooring device shown in FIG. 1;
3 is a diagram illustrating a configuration of a mooring apparatus for mooring between floats according to an embodiment of the present invention;
Figs. 4A and 4B are views showing a detailed configuration of the support portion shown in Fig. 3; Fig.
5 is a diagram illustrating a detailed configuration of the electromagnet mooring unit shown in FIG.
FIGS. 6A to 6D sequentially illustrate the operation of the electromagnet mooring unit shown in FIG. 5. FIG.
7A and 7B are views showing an example of fastening between the electromagnet mooring part and the ballast shown in FIG.
Fig. 8 is a view showing another example of fastening between the electromagnet mooring part and the bollard shown in Fig. 5; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a mooring apparatus for mooring between floats according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram for a schematic understanding of a mooring device for mooring between floats according to an embodiment of the present invention. 2A and 2B are views showing the use state of the mooring device shown in FIG.

The mooring device according to one embodiment of the present invention is for connecting two floating fluids 10 and 20 floating in the sea in a parallel mooring manner. The mooring device includes a support 110, a connection part 120, And an electromagnet mooring unit 140, and each mooring unit can operate under the control of the control unit 130. [

For example, the first subfluid 10 is a floating marine structure such as LNG-FPSO, FLNG, FPSO, and the second subfluid 20 is a carrier such as an eluent carrier or shuttle tanker.

The support portion 110 is attached to the side surface of the hull of the first subfluid 10 by welding or the like and is firmly fixed.

The connecting part 120 is a part for fastening the supporting part 110 and the electromagnet mooring part 140 to each other and is hinged to one end of the supporting part 110 to be perpendicular to the hull of the first secondary fluid 10 along the hinge rotation direction, Or may be straightened toward the second fluid 20.

The electromagnet mooring part 140 is attached to the other end of the connecting part 120 and attached to the hull of the second float 20 which is adjacent to the connecting part 120 by the magnetic force in the unfolded state, Mooring.

The control unit 130 controls the supply of electric power to the electromagnet mooring unit 140 to turn the electromagnet function of the electromagnet mooring unit 140 on / off.

In this case, when the electromagnet mooring part 140 is powered to turn on the electromagnet function, the electromagnet mooring part 140 can be attached to the hull of the second float 20 by the magnetic force .

Alternatively, a separate mounting member made of a magnetic material may be further provided on the side of the hull of the second sub-fluid 20 in order to use the electromagnet function.

The mooring device thus constructed can simplify the mooring process using the electromagnet function.

Also, in one embodiment, one end of the connecting portion 120 is hinged to the supporting portion 110 so that the connecting portion 120 can be folded or unfolded as described above. Accordingly, the connection part 120 may be vertically folded toward the hull of the first subsidiary fluid 10 along the direction of the hinge rotation, or may be unfolded straight and directed toward the opposite side of the hull.

As a result, when the mooring is not performed, the connecting portion 120 and the electromagnet mooring portion 140 can be folded toward the hull as shown in FIG. 2A. The connecting portion 120 is rotated 90 degrees along the hinge rotation direction so that the electromagnet mooring portion 140 fastened to the end portion of the connecting portion 120 can be attached to the second float 20 as shown in FIG. And is unfolded in a straight line.

1, a plurality of mooring devices including the supporting part 110, the connecting part 120, and the electromagnet mooring part 140 are installed at predetermined intervals along the longitudinal direction of the ship, So that the contact state between the second fluid 20 and the second fluid 20 can be stably maintained.

3 is a diagram illustrating a configuration of a mooring apparatus for mooring between floats according to an embodiment of the present invention.

3, a mooring device for mooring between floats according to an embodiment of the present invention includes a support 110 fixed to a first float 10, a second float 110 attached to a second float 20 during mooring, And a connecting portion 120 connecting between the supporting portion 110 and the electromagnet mooring portion 140. The electromagnet mooring portion 140 includes a connecting portion 120,

The connecting portion 120 may include a housing 121, a hinge assembly 122, and a connecting member 123 as shown.

The housing 121 of the connection unit 120 is formed to have a hollow space on the inner side, and a hinge assembly 122 is formed at one end thereof.

The hinge assembly 122 is fastened to the support 110 so that one end of the connection part 120 is hinged to the support part 110 so that the connection part 120 is vertically folded along the hinge rotation direction of the hinge assembly 122, So that it can be spread.

The connecting member 123 is inserted and fixed in the inner space of the housing 121 and the end of the connecting member 123 protrudes from the housing 121 and is fastened to the electromagnet mooring part 140.

The configurations of the support portion 110 and the electromagnet mooring portion 140 will be described later in more detail in FIGS. 4A to 5.

The connecting part 120 is fastened on the supporting part 110 so as to be movable up and down and left and right for connection between various kinds of float, so that the mooring position is appropriately determined depending on the type and height of float to be moored .

4A and 4B illustrate a detailed configuration of the support portion 110 for enabling the connection portion 120 to move up and down and left and right.

Referring to FIG. 4A, the supporting portion 110 for fixing the connecting portion 120 includes a base 111, a first moving plate 112, a second moving plate 113, and a link portion 114.

The base 111 is a plate-like body attached to the side surface of the first sub-fluid 10.

The first moving plate 112 is coupled to the base 111 so as to be movable in the left and right direction and the second moving plate 113 is coupled to the first moving plate 112 so as to be movable up and down .

A sliding structure as shown in the figure may be applied to realize the left / right / up and down movement of the first moving plate 112 and the second moving plate 113.

For example, as shown in the figure, a guide bar for guiding the upper surface of the base 111 so as to be slidable in the left and right directions is protruded and a corresponding guide groove is formed on the bottom surface of the first moving plate 112. When the upper surface of the base 111 and the bottom surface of the first moving plate 112 are brought into contact with each other so that the upper surface of the base 111 and the lower surface of the first moving plate 112 are in contact with each other, Lt; / RTI >

Similarly, when a guide bar in the vertical direction is protruded from the upper surface of the first moving plate 112 and a corresponding guide groove is formed in the bottom surface of the second moving plate 113, Can slide up and down along the guide bars of the first moving plate (112).

On the second moving plate 113, a link portion 114 fastened to the hinge assembly 122 of the connection portion 120 is fixedly installed. One end of the connection portion 120 is hinged to the link portion 114 through the hinge assembly 122 and can be folded or unfolded in the hinge rotation direction.

On the other hand, as shown in FIG. 4B, a pair of buffer springs 115 may be installed on the left and right sides of the first moving plate 112 to mitigate shocks caused by the left and right movement.

In addition, a pair of buffer springs 116 may be provided on the upper and lower sides of the second moving plate 113 to mitigate the impact caused by the vertical movement.

Since the first and second fluids 10 and 20 are not fixed and floated, a relatively large impact may occur due to the contact during mooring. Thus, The buffering function is strengthened by using the buffer springs 115 and 116 and the buffer springs 125 in the connection part 120. [

The shock due to the flow of the float fluids 10 and 20 can be alleviated by the free vibration of the buffer springs 115 and 116 provided in the mooring device even when the mooring is completed.

The amount of movement of the first and second moving plates 112 and 113 is limited to within a predetermined range by the buffer springs 115 and 116 provided on the support portion 110 in the up / down / right / left directions to cause excessive movement, And the like can be effectively prevented.

5 is a diagram illustrating a detailed configuration of the electromagnet mooring unit shown in FIG.

The electromagnet mooring part 140 is a part directly attached / fastened to the second subsidiary fluid 20 at the time of mooring and includes a body 141, an electromagnet 142, a ballast fixing part 143, 144 and a side fender 145. In this embodiment,

The electromagnet mooring unit 140 configured as described above activates the electromagnet 142 and temporarily mobilizes the two submerged fluids 10 and 20 in close proximity by using the electromagnet mooring unit 140. The electromagnet mooring unit 140 protrudes the bollard fixing unit 143 to bollard, (21) to tightly bind them. After the mooring operation is completed, the operation of the electromagnet 142 is stopped.

Thus, the mooring position is located within a short time and the fastening force is enhanced, so that efficient and stable mooring can be performed.

5, the electromagnet 142 is provided on one side of the body 141 which is in contact with the hull of the secondary fluid 20 at the time of mooring, and temporarily holds the secondary fluid 20 by the magnetic force. Holding.

The bollard fixing portion 143 is installed in the guide groove in the body 141 so as to be drawn in and out by a predetermined distance by the driving member 144 and the second float 20 is temporarily held by the electromagnet 142 Is pulled outward along the guide groove from the inside of the body 141 and is mechanically fastened / fixed to the bollard 21 on the second float 20 in the state of the second float 20.

In this case, the bollard fixture 143 is driven forward from the inside of the body 141 to enter the bollard hole, and then the bollard hole is inserted into the bollard hole, And can be mechanically fastened / fixed to the bollard 21 within the bollard 21.

The side fenders 145 are movably coupled to the left and right sides or the inside of the body 141 in the forward and backward directions to mitigate (absorb) the shock applied when the mooring is performed.

The side fender 145 may be configured to be capable of protruding / returning by a predetermined amount in the forward and backward directions in accordance with the mooring step.

For example, as shown in one side of the side fender 145, a support 145a, a spring 145b, and a fastening ring 145c may be formed with a lead-in groove.

In this case, the tightening ring 145c protrudes from the recessed groove on the support base 145a in the projecting state of the spring fender 145, and the side fender 145 comes into contact with the second float 20, 145 and the spring 145b is compressed, it is fastened by the lead-in groove on the support base 145a to switch the spring fender 145 to the drawing-in state.

One end of the connecting member 123 fastened to the electromagnet mooring part 140 can be inserted and installed with a clearance so that only a slight flow can be made in the fastening groove in the body 141 constituting the electromagnet mooring part 140 have.

For example, referring again to FIG. 3, a joint ball 124 is formed at an end of a connecting member 123 fastened to the body 141. On the surface of the body 141, there is provided a coupling groove formed corresponding to the joint ball 124, and a buffer member for preventing impact damage due to movement of the joint ball 124 is formed around the coupling groove.

A joint ball 124 formed at one end of the connecting portion 120 is inserted and installed with a gap so as to be able to flow in the fastening groove of the body 141.

The other end of the connecting member 123 may be fastened to the support portion 110 in a vertically and horizontally rotatable manner, as described above.

The position of the two fluids 10 and 20 is held by the electromagnet 142 and then fixed by mechanical means to minimize the movement of the connecting portion 120. As a result, ) Relative to the position of the target.

In addition, due to the fastening structure between the support part 110 and the connection part 120 and the fastening structure between the connection part 120 and the electromagnet part 140, So that it is possible to more flexibly cope with the relative positional change between the two fluids 10, 20.

In addition, since the mooring device according to the embodiment of the present invention includes the side fender 145 and has the buffering function by itself, the installation of the large fender for shock absorption during the mooring can be omitted.

6A to 6D are diagrams sequentially showing the operation of the electromagnet mooring unit shown in FIG. 7A and 7B are views showing an example of fastening between the electromagnet mooring part and the ballast shown in FIG. 5, and FIG. 8 is a view showing another example of fastening between the electromagnet mooring part and the ballast shown in FIG.

First, FIG. 6A shows the side fender 145 protruding to minimize impact upon contact with the secondary fluid 20 as an access step to the secondary fluid 20. FIG. At this time, the electromagnet 142 is in the operation stop state, and the bollard fixing portion 143 is in the state of being drawn into the body 141. [

6B is a holding step using the electromagnet 142. Fig. Upon contact with the secondary fluid 20, the side fender 145 is retracted and the electromagnet 142 is activated to hold the secondary fluid 20.

During the holding, the bollard fixing portion 143 is pulled out of the body 141 as shown in Fig. 6C, and is pulled into the bollard hole for fastening with the bollard 21. Then, in the bollard hole, the bollard fixing portion 143 is fixed to the bollard 21 by mechanical fastening.

Various known mechanical fastening methods can be applied to fastening the bollard fixing portion 143 and the bollard 21 of the electromagnet mooring portion 140. [

For example, as shown in FIGS. 7A and 7B, when the end diameter of the bollard fixing portion 123 inserted into the bollard hole is expanded and the bollard fixing portion 123 is inserted into the bollard hole, The wedge may be protruded at a plurality of points to hold the bollard fixture 123.

Alternatively, as shown in FIG. 8, the bollard fixing portion 123 in the bollard hole may be configured to hold various points of the bollard 21 by protruding the fastening members in the form of a U-shaped robot hand.

After the mechanical fastening and fixing of the bollard fixing portion 143, the operation of the electromagnet 142 is stopped.

6D, the side fenders 145 of the electromagnet mooring portion 140 are projected again to apply a predetermined compressive force to the hull of the second float 20, and the body 141 and the connecting portion (120) retracts toward the first subfluid (10) by a distance to prevent impact or damage to the hull which directly contacts the mooring device.

In this case, the bollard fixing portion 143 fixed to the bollard 21 exerts a tensile force, and the side fender 145 exerts a compressive force.

In addition, in one embodiment, the connecting portion 120 may be configured such that one end of the connecting portion 120 fastened to the supporting portion 110 is rotatable in the up / down / left / right directions by a predetermined amount, and the other end fastened to the electromagnet mooring portion 140 is slightly It is designed so that only the flow can be made, and the moment can be applied.

Accordingly, even if there is a flow factor such as a current or a wind when mooring between the two fluids 10 and 20, the relative permissible behavior in the connection structure of the supporting portion 110, the connecting portion 120, and the electromagnet mooring portion 140 It is possible to cope with a change in position and the moored state can be stably maintained.

The configuration of the mooring device for mooring between the floats according to the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the technical idea of the present invention.

10, 20: float, 110: support,
120: connection part, 130: control part,
140: electromagnet mooring part

Claims

A support portion fixedly installed on the side surface of the hull of the first portion fluid;
A connecting part having one end hinged to the supporting part so as to be vertically folded or straight to the hull along the hinging direction; And
And an electromagnet mooring portion installed at the other end of the connecting portion and attached to a hull of a second subordinate fluid which is in proximity to the first subordinate fluid by magnetic force in a state in which the connecting portion is unfolded to moor the second subordinate fluid. .

The method according to claim 1,
Wherein one end of the connecting portion is coupled to the supporting portion so as to be rotatable up and down and left and right by a predetermined amount and the other end is inserted and installed in the coupling groove in the electromagnet mooring portion with a gap therebetween.

The method according to claim 1,
The electromagnet mooring unit includes:
Body;
An electromagnet provided on one surface of the body and temporarily holding the second sub-fluid by a magnetic force; And
And a bollard fixture which is drawn out from the inside of the body and fixed to the bollard of the second subsidiary fluid while the second suspension is temporarily held by the electromagnet.

The method of claim 3,
Wherein the bollard fastening portion is forwardly driven from the inside of the body to be inserted into the bollard hole and then mechanically fastened to the bollard.

The method of claim 3,
Further comprising a side fender movably coupled to the body in a forward and backward direction.

6. The method of claim 5,
Wherein, when approaching the second floating body, the electromagnet is in an inoperative state, the bollard fixture is in a retracted state, the side fender is in a protruded state,
Wherein the side fender is retracted upon contact with the second float, the electromagnet is actuated to hold the second float,
The bollard fixing part is pulled into the bollard hole for fastening with the bollard while the bollard fixing part is fastened to the bollard in the bollard hole,
Wherein the electromagnet is stopped, the side fender is again projected, and the body is retracted by a predetermined distance.

The method of claim 3,
A joint ball is formed at an end of the connection part to be fastened to the body,
The body is provided with a coupling groove formed in a surface thereof corresponding to the joint ball,
A buffer member is provided around the fastening groove,
Wherein the joint ball is inserted and installed with a gap so as to be able to flow in the coupling groove.

The apparatus according to claim 1,
A base attached to the side of the hull of the first subfluid;
A first moving plate movably coupled to the base in a lateral direction;
A second moving plate movably coupled to the first moving plate in a vertical direction; And
And a link portion fixed to the second moving plate and hinged to one end of the connecting portion so that the connecting portion can be folded or unfolded in a hinging direction.

9. The apparatus according to claim 8,
A pair of buffer springs provided on both left and right sides of the first moving plate for alleviating impact due to lateral movement; And
And a pair of buffer springs installed on both upper and lower sides of the second moving plate for alleviating the impact caused by the upward and downward movements.