KR101099693B1 - System and method for ship-to-ship transferring liquefied gas - Google Patents

Abstract

A fleet liquefied gas transfer system and a method thereof are disclosed. A forerunner liquefied gas transfer system for transferring liquefied gas between a first vessel and a second vessel moored at intervals, the messenger line being thrown from the first vessel to the second vessel, and installed on the first vessel, One end of the messenger line is connected to the middle region and is pulled from the first vessel to the second vessel by the messenger line, and a support hose for injecting or discharging seawater or fresh water therein, and a support connecting the first vessel and the second vessel By providing a ship-to-boat liquefied gas delivery system including a cryogenic flexible hose that is supported and moved by a hose and connects the first vessel and the second vessel, the installation space and load are minimized and the vessel is transported. It can also respond to the relative position change of.

Description

Fleet Liquefied Gas Transfer System and Its Method {SYSTEM AND METHOD FOR SHIP-TO-SHIP TRANSFERRING LIQUEFIED GAS}

The present invention relates to a fleet liquefied gas transfer system and method thereof.

Natural gas and petroleum gas, which are widely used as fuels, are transported in a liquefied gas (Liquefied gas) through a liquefaction process for efficient transport. For example, liquefying natural gas to liquefied natural gas (Liquefied Natural Gas, LNG) reduces its volume to about one-sixth, increasing the amount it can carry at one time. The liquefied natural gas carried to the destination is then regasified and used as fuel.

In order to transport liquefied gas such as liquefied natural gas in a long distance, a transport vessel equipped with a storage tank capable of storing cryogenic liquids is used. Recently, LNG Floating Production Storage and Offloading (LNG-FPSO) and Floating Liquefied Petroleum Gas Production Storage and Unloading Facilities (LPG-) are designed to transport and use natural gas more efficiently and safely. FPSOs and Floating Storage and Regasification Units (FSRUs) have been developed and used.

LNG-FPSO and LPG-FPSO are facilities that produce, liquefy and store gas directly from offshore oil fields or gas fields, and supply liquefied petroleum gas and liquefied natural gas to carriers, and FSRU stores liquefied gas supplied from carriers. A facility that vaporizes liquefied gas to onshore gas demand and supplies it through subsea pipelines. To this end, facilities such as LNG-FPSO, LPG-FPSO, and FSRU can collect gas from an oil field or gas field, a liquefaction device for liquefying gas, and various pipes and liquefied gas for storing or transporting liquefied gas. A regasification device or the like for vaporizing the gas is provided.

By the way, these various apparatuses and piping connecting them to each other are mainly installed in the upper deck of LPG-FPSO, LNG-FPSO, and FSRU. Therefore, it may not be easy to secure a space for installing equipment for forwarding the liquefied gas. In addition, when the weight of equipment for transporting the liquefied gas to the ship's ship is large, the amount of liquefied gas that can be stored in facilities such as LNG-FPSO, LPG-FPSO, and FSRU may be reduced.

By the way, the ship to ship transfer system disclosed so far often uses large equipment, such as a crane, and the scale is also large. Therefore, there is an urgent need for weight reduction and miniaturization of facilities for transporting liquefied gas to ships.

In addition, in the process of transferring the liquefied gas, the relative position of the equipment and the carrier such as LNG-FPSO, LPG-FPSO and FSRU may be continuously changed by the influence of waves, wind and current. Therefore, it is also necessary to provide a facility and a method capable of transporting liquefied gas to the ship's fleet even if there is a relative change in position of the two vessels.

The present invention minimizes the installation space and load, and provides a liquefied liquefied gas transfer system and method that can transfer the liquefied gas even if there is a relative position change of the two vessels.

According to an aspect of the present invention, a ship liquefied liquefied gas transfer system for transferring the liquefied gas between the first vessel and the second vessel anchored at intervals, messenger thrown from the first vessel to the second vessel line; A support hose installed in the first vessel, one end of the messenger line being connected to an intermediate region and being towed from the first vessel to the second vessel by the messenger line, and having seawater or fresh water injected or discharged therein; And a cryogenic flexible hose that is supported and moved by the support hose connecting the first vessel and the second vessel, and connects the first vessel and the second vessel. .

The above-described liquefied liquefied gas delivery system, the rubber weight coupled to the messenger line; And a messenger line origin installed at the first vessel and connected to the other end of the messenger line to wind or unwind the messenger line.

The above-mentioned liquefied liquefied gas delivery system may be connected to one side or both sides of the support hose, and may further include a pump for injecting or discharging sea water or fresh water into the support hose. Here, the above-mentioned liquefied liquefied gas delivery system may further include a hose support that is installed in the first vessel, the hose support for supporting the cryogenic flexible hose to move in the longitudinal direction.

The hose support, a plurality of rollers for movably supporting the cryogenic flexible hose; And a pair of guide rails rotatably supporting both ends of the plurality of rollers. Here, the above-mentioned liquefied liquefied gas transport system, the traction means for pulling the cryogenic flexible hose in one direction or the other direction, the traction means, the fastening portion coupled to the cryogenic flexible hose; A tow ring detachable from the fastening unit; A towing rope having one end connected to the towing ring; And a towing rope winch connected to the other end of the towing rope and winding or unwinding the towing rope.

The above-mentioned liquefied liquefied gas delivery system further includes a moving support means detachable to the cryogenic flexible hose, wherein the moving support means includes a curved plate portion surrounding a portion of an outer circumferential surface of the cryogenic flexible hose, and both ends of the curved plate portion. Band-shaped body having an elastic band portion coupled; And a plurality of roller means installed on one surface of the curved plate to reduce friction when the cryogenic flexible hose moves along the longitudinal direction of the support hose. The moving support means may further include opening and closing means installed at at least one of the curved portion and the elastic portion coupled portion.

Said above-mentioned liquefied liquefied gas transfer system, the support hose and the cryogenic flexible hose surrounding the movement guide means, the movement guide means, the curved plate-shaped saddle in contact with the outer peripheral surface of the cryogenic flexible hose; And a plurality of guide rollers in contact with an outer circumferential surface of the support hose and reducing friction when the cryogenic flexible hose moves along the longitudinal direction of the support hose, and wherein the cryogenic flexible hose moves along the longitudinal direction of the support hose. When the cryogenic flexible hose can be supported so as not to leave the support hose.

The above-mentioned shipowner ship liquefied gas transfer system further includes a support hose support means interposed at a portion where the support hose is in contact with the first ship and the second ship, and the support hose support means includes: A main body having a support groove into which a portion is inserted; And it may include a plurality of wheels installed on the lower side of the main body.

According to another aspect of the present invention, a method for transporting a liquefied gas for liquefied gas for transferring liquefied gas between the first vessel and the second vessel anchored in a gap, the first vessel and the second vessel anchored in a gap A method for transporting a liquefied gas between ships for liquefied gas, the method comprising: throwing a messenger line from the first vessel to the second vessel and connecting the second vessel to the second vessel; Allowing the support hose installed on the first vessel to be towed by the messenger line to the second vessel; Injecting sea water or fresh water to the support hose; And moving the cryogenic flexible hose supported by the support hose from the first vessel to the second vessel.

The shipowner ship liquefied gas transfer system and method thereof according to an embodiment of the present invention can minimize installation space and load, and can also respond to relative positional changes between ships to which liquefied gas is transferred.

1 is a view showing a messenger line thrown from a first ship to a second ship of a liquefied liquefied gas transport system according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a portion indicated by A in FIG. 1; FIG.
3 is a view illustrating a messenger line reaching a second vessel.
4 is a view showing a support hose is towed from the first vessel to the second vessel by a messenger line.
5 is a view showing a state in which the support hose is connected to the bollard of the second ship.
FIG. 6 is an enlarged view of a portion indicated by B in FIG. 5; FIG.
7 is a view showing the support hose to be rigid.
8 is a view showing the movement of the cryogenic flexible hose onto the rigid support hose.
9 is a view for explaining the structure of the cryogenic flexible hose.
10 is a view for explaining the hose support and towing means.
FIG. 11 is an enlarged view of a portion indicated by C in FIG. 10.
12 is a view for explaining a method of moving the cryogenic flexible hose.
13 is a view showing a movement guide means.
FIG. 14 is a sectional view taken along the line XIII-XIII of FIG. 8. FIG.
15 is a view showing a moving support means.
16 is a view showing a support hose support means.
17 is a view for explaining the liquefied liquefied gas transport method according to an embodiment of the present invention.

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 described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view of throwing a messenger line of a ship liquefied liquefied gas transfer system according to an embodiment of the present invention from the first vessel to the second vessel.

Referring to FIG. 1, a messenger line 32 included in a liquefied liquefied gas delivery system according to an embodiment of the present invention is thrown from a first vessel 10 to a second vessel 20.

When the first vessel 10 is any one of the facilities such as LPG-FPSO, LNG-FPSO, and FSRU described above, the second vessel 20 may be a carrier. On the contrary, when the first vessel 20 is a carrier, the second vessel 20 may be any one of facilities such as LPG-FPSO, LNG-FPSO, and FSRU.

Since the first vessel 10 and the second vessel 20 are anchored at sea, position change may occur relatively due to environmental loads such as waves, wind, and currents. Thus, the first vessel 10 and the second vessel 20 are anchored to form appropriate spacing so as not to collide with each other by this relative position change.

The deck 12 provided in the hull 11 of the first vessel 10 may be provided with a plurality of machine rooms 17 and 18, as shown. Although not shown, various devices may be installed in the machine rooms 17 and 18, which may include a throwing device (not shown) for throwing the messenger line 32 and other ends of the messenger line 32. A messenger line winch (not shown) may be included that is connected to wind or unwind messenger line 32. For reference, one end of the messenger line 32 is connected to an intermediate region of a support hose (see 41 in FIG. 4) to be described below.

The deck 22 provided in the hull 21 of the second vessel 20 may be provided with a bollard 23 and a manifold 25 as shown. Bollard 23 refers to the same thing as a pile to tie the rope. The manifold 25 refers to an arrangement of connections of a plurality of transfer pipes (not shown) connected to a cargo tank (not shown).

For reference, the messenger line 32 may be thrown using a throwing device (not shown). However, when the gap between the first vessel 10 and the second vessel 20 is close, the messenger line 32 directly throws the second portion. It is also possible to reach the vessel 20. However, in order for the messenger line 32 to be easily thrown, an appropriate weight may be coupled to a portion of the messenger line 32. This weight will be described with reference to FIG. 2.

FIG. 2 is an enlarged view of the portion labeled A in FIG. 1.

Referring to FIG. 2, a weight body 31 is installed on the messenger line 32. The weight 31 facilitates throwing and can be thrown further when throwing the messenger line 32 using a throwing device (not shown) or the like. That is, the messenger line 32 can be moved along with the weight 31 by throwing the weight 31.

However, when the weight body 31 is made of a solid material, the weight body 31 may collide with the hull 21 of the second vessel 20 to cause damage. Therefore, the weight 31 may be made of a rubber weight made of an elastic material such as rubber or the like to prevent damage to the hull 21 of the second vessel 20 while having an appropriate weight.

For reference, the messenger line 32 is lightweight and has high tensile strength, and may use a nylon rope that is not wet with seawater or fresh water.

Figure 3 shows the messenger line of the fleet liquefied gas transfer system according to an embodiment of the present invention reached the second ship.

Referring to FIG. 3, the weight 31 and messenger line 32 thrown from the first vessel 10 have reached the deck 22 of the second vessel 20.

As shown, the messenger line 32 may reach the deck 22 of the second vessel 20 sufficiently beyond the gap formed between the first vessel 10 and the second vessel 20. Before throwing 32, the other end of the messenger line 32 can be sufficiently released from the messenger line winch (not shown) in view of the gap between the first vessel 10 and the second vessel 20.

4 is a view in which the support hose is towed from the first vessel to the second vessel by the messenger line of the fleet liquefied gas transfer system according to an embodiment of the present invention.

Referring to FIG. 4, as the messenger line 32 is connected to the bollard 23, and the other end of the messenger line 32 is wound in the machine room 18 by a messenger line winch (not shown), A support hose 41 having an intermediate region connected to one end of the messenger line 32 is towed from the first vessel 10 to the second vessel 20.

Here, as described with reference to FIG. 3, after the messenger line 32 is thrown from the first vessel 10 and reaches the second vessel 20, the messenger line 32 is transferred to the bollard 23. Connect At this time, the messenger line 32 is not completely fixed to the bollard 23, but only by hanging so that the messenger line winch (not shown) winds up the other end of the messenger line 32. One end is allowed to move in the direction of the second vessel 20. Accordingly, as the messenger line winch (not shown) winds up the other end of the messenger line 32, the support hose 41 is pulled toward the second vessel 20 by the messenger line 32.

The support hose 41 is a pressure resistant hose through which seawater or fresh water can be injected or discharged. That is, the support hose 41 can be flexibly deformed when no pressure is applied to the inside, but may be used when the seawater or fresh water is injected into the inside so that the internal pressure increases and hardly expands to the outside. Here, the rigidity means that when the internal pressure of the support hose 41 rises, the support hose 41 is straightened and firmed.

By the way, while the support hose 41 is towed from the first vessel 10 to the second vessel 20 by the messenger line 32, the support hose 41 is prevented from applying pressure in the support hose 41. Allows for flexible deformation.

Although not shown, the support hose 41 may be stored in a state wound around a support hose winch (not shown) installed in the machine rooms 17 and 18. One or both sides of the support hose 41 may be connected to a pump (not shown) for injecting or discharging sea water or fresh water into the support hose 41. Pumps (not shown) may be installed below the machine rooms 17, 18.

5 is a view illustrating a state in which a support hose of a liquefied liquefied gas transport system of a ship for ship according to an embodiment of the present invention is connected to a bollard of a second ship.

Referring to FIG. 5, the support hose 41 pulled to the deck 22 of the second vessel 20 by the messenger line (see 32 of FIG. 4 and omitted from FIG. 5) is connected to the bollard 23. At this time, the support hose 41 is in a flexible state because no pressure is applied therein, and the support hose 41 connects the first vessel 10 and the second vessel 20.

6 is an enlarged view of a portion denoted by B in FIG. 5.

Referring to FIG. 6, an intermediate region of the support hose 41 is connected to the bollard 23. At this time, the bollard 23 is provided with a separation preventing means 29, it is possible to prevent the support hose 41 from being separated from the bollard (23).

The support hose 41 may allow the middle region of one strand of the support hose 41 to be connected to the bollard 23, and connect the ends of the two strands of the support hose 41 to each other and connect the same. The part may be connected to the support hose 41.

Figure 7 shows a state in which the support hose of the stern ship liquefied gas transfer system according to an embodiment of the present invention to be rigid.

Referring to FIG. 7, when seawater or fresh water is injected into the support hose 41, the support hose 41 is in a rigid state as indicated by the solid line from the flexible state as indicated by the dotted line.

Therefore, the support hose 41 connects the first vessel 10 and the second vessel 20 in two strands, and can maintain a rigid state even when a predetermined load is applied.

Here, the predetermined load that can be supported by the support hose 41 in the rigid state may vary depending on the internal pressure of the support hose 41. Therefore, the internal pressure of the support hose 41 is the self-weight of the support hose 41 when the gap between the first vessel 10 and the second vessel 20, the seawater or fresh water is filled, and the cryogenic temperature to be described below. The load of the flexible hose (see 50 of FIG. 8), the load of the liquefied gas passing through the cryogenic flexible hose 50, and the environmental load caused by wind or waves are determined. In addition, the internal pressure of the support hose 41 may be adjusted by using a pump (not shown) installed in the machine rooms 17 and 18.

FIG. 8 is a view showing a cryogenic flexible hose being moved onto a rigid support hose of a stern ship liquefied gas transfer system according to an exemplary embodiment of the present invention.

Referring to FIG. 8, the cryogenic flexible hose 50 is supported by the support hose 41 in a rigid state in which seawater or fresh water is injected, and is moved from the first vessel 10 to the second vessel 20.

When one end of the cryogenic flexible hose 50 reaches the second vessel 20, one end of the cryogenic flexible hose 50 is connected to the manifold 25.

FIG. 9 shows a cryogenic flexible hose of a fleet liquefied gas delivery system in accordance with one embodiment of the present invention.

The cryogenic flexible hose 50 includes a hose body 51 and connecting portions 52 and 53 provided at both ends of the hose body 51. In addition, the fastening part 55 is coupled to a part of the hose body 51.

Hose body 51 is made of a material that can maintain flexibility even in the process of transporting cryogenic liquefied gas, the hose body 51 made of such a material is well known, so detailed description thereof will be omitted.

 The connecting portions 52 and 53 are portions for connecting to a plurality of transfer pipes (not shown) arranged in the manifold (see 25 in FIG. 8). The connections 52 and 53 are configured to be detachably coupled to the end of the conveying pipe (not shown) like a flange.

The fastening part 55 is for connecting the traction means for pulling the cryogenic flexible hose 50, and the fastening part 55 will be described again with reference to FIG. 11 below.

FIG. 10 illustrates a hose support and a towing means of a liquefied liquefied gas delivery system according to an embodiment of the present invention, and FIG. It demonstrates with reference to FIG. 10 and FIG.

A hose support 70 is installed on the deck 12 provided in the hull 11 of the first vessel 10. Hose support 70 is to support the cryogenic flexible hose 50 to be movable, one side of the hose support 70 may be installed to be located between the machine room (17, 18). And, the hose support 70 may be installed in a direction that can move the cryogenic flexible hose 50 toward the second vessel 20 as shown.

First, referring to FIG. 11, the fastening part 55 coupled to the hose body 51 of the cryogenic flexible hose 50 includes a fixing member 56 and a fastening ring 57.

The fixing member 56 is a member coupled to the hose body 51, and may be fixed to the surface of the hose body 51 by coupling means such as bolts, nuts, and adhesives. The fastening ring 57 is coupled to the fixing member 56. The fastening ring 57 may be coupled to protrude somewhat from the fixing member 56.

The first towing means 61 includes a first towing rope 62 and a first towing ring 63. The first traction ring 63 is coupled to the fastening ring 57, the first traction ring 63 is detachable to the fastening ring (57). One end of the first towing rope 62 is connected to the first towing ring 63.

Referring again to FIG. 10, the first towing rope 62 is coupled to the cryogenic flexible hose 50. That is, as shown in FIG. 11, the first traction ring 63 is coupled to the fastening ring 57. The other end of the first towing rope 62 is connected to a towing rope winch (not shown) to wind or unwind the first towing rope 62. The first towing rope winch (not shown) may be installed in the machine room 17, 18. As shown in the drawing, the first tow rope winch may be installed in the machine room 17. have.

Accordingly, when the first towing rope winch (not shown) is operated to wind the first towing rope 62, the cryogenic flexible hose 50 is moved on the hose support 70 in the direction of the second vessel 20. .

The second towing means 65 is installed on the deck 12. The second towing means 65 includes a second towing ring 67, a second towing rope 66, and a second towing rope winch 68. The second towing ring 67 is detachable to the fastening ring 57 shown in FIG. 11, one end of the second towing rope 66 is connected to the second towing ring 67, and the second towing rope 66 is attached. The other end of) is connected to a second towing rope winch 68 which winds or unwinds the second towing rope 66.

FIG. 12 is a view for explaining a method of moving the cryogenic flexible hose of the liquefied liquefied gas delivery system according to an embodiment of the present invention.

Referring to FIG. 12, when the first towing rope winch (not shown) installed in the machine room 17 winds up the first towing rope 62 and the length thereof is shortened, the cryogenic flexible hose 50 is towed to the hose supporter. It is moved in the direction of the second vessel 20 on 70.

If the cryogenic flexible hose 50 is to be moved in the opposite direction, the first towing ring 63 of the first towing means (61 in FIG. 11) is separated from the fastening ring 57, and the second towing is performed. After connecting the second traction ring 67 of the means 65 to the fastening ring 57, the second traction rope winch 68 is operated to shorten the length of the second traction rope 66 by 50 may be moved in a direction away from the second vessel 20 on the hose support (70).

That is, the traction means of the liquefied liquefied gas transport system according to an embodiment of the present invention is to pull the cryogenic flexible hose in one direction or the other direction, the first traction means 61, the second traction means 65 described above And a fastening part 55.

In this process, in order for the cryogenic flexible hose 50 to be smoothly moved to one side or the other side by the towing means as described above, the hose support 70 is a pair of guide rails 71 and a pair of guide rails ( Both ends are supported by 71, and the some roller 72 provided so that it may rotate smoothly can be provided.

Although not shown, when the first vessel 10 is any one of the facilities such as LPG-FPSO, LNG-FPSO, and FSRU described above, various types of equipment (not shown) installed on the hull 11 may be used. Due to space constraints, the first towing means 61 and the second towing means 65 may be difficult to install on the deck 12. In this case, a means for transferring the cryogenic flexible hose 50 to one side or the other side may be installed in the hose support 70 itself. That is, by installing a driving device (not shown) for rotating the roller 72 to one side or the other side of some of the roller 72, the cryogenic flexible hose 50 may be moved to one side or the other side.

FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. 8, and FIG. 14 illustrates a moving support means of a liquefied liquefied gas transport system according to an embodiment of the present invention, and FIG. 15. The movement guide means of the liquefied liquefied gas delivery system according to an embodiment of the present invention is shown.

Referring to FIG. 13, the cryogenic flexible hose 50 is coupled to the moving support means 80, and the cryogenic flexible hose 50 and the support hose 41 to which the movable support means 80 are coupled are movable guide means ( 90) are combined.

First, the moving support means 80 will be described with reference to FIGS. 13 and 14.

The moving support means 80 is included in the ship's liquefied gas delivery system according to an embodiment of the present invention, and detachably coupled to the cryogenic flexible hose 50.

The movement supporting means 80 includes a band-shaped main body 81 and a plurality of roller means 86 and 87. The band-shaped body 81 includes a curved plate portion 83 surrounding a portion of the outer circumferential surface of the cryogenic flexible hose 50 and an elastic band portion 82 coupled to both ends thereof. In addition, the plurality of roller means 86 and 87 reduce the friction when the cryogenic flexible hose 50 is supported by the support hose 41 to move along the longitudinal direction of the support hose 41.

The curved portion 83 is made of a solid material capable of maintaining a constant shape, and has a shape of the outer circumferential surface of the cryogenic flexible hose 50 so as to be in close contact with a portion of the outer circumferential surface of the cryogenic flexible hose 50.

A plurality of roller means (86, 87) is provided on a surface of the curved surface portion 83, the curved surface portion 83 is not in contact with the outer peripheral surface of the cryogenic flexible hose (50). Here, the plurality of roller means (86, 87) is positioned when the cryogenic flexible hose 50 is supported by the support hose 41, the outer peripheral surface of the cryogenic flexible hose 50 and the outer peripheral surface of the support hose 41 Is installed on. Therefore, when the cryogenic flexible hose 50 is moved relative to the support hose 41, the frictional force is reduced by the plurality of roller means 86 and 87 so that the cryogenic flexible hose 50 moves smoothly.

Opening and closing means 84 and 85 are provided at the portion where the curved plate 83 and the elastic band 82 are coupled to each other. Opening and closing means (84, 85) can be fastened and detached, one of the opening and closing means (84, 85) is provided at the end of the elastic band portion 82, the other is installed in the curved plate portion 83, band type By opening and closing the main body 81, the moving support means 80 can be easily detached to the cryogenic flexible hose 50.

Although not shown, opening and closing means may be additionally installed in a portion where the curved plate portion 83 and the elastic band portion 82 are coupled as necessary.

The elastic band portion 82 is made of a material having elasticity, so that when the band-shaped body 81 is coupled to the outer peripheral surface of the cryogenic flexible hose 50, the elastic band portion 82 is coupled in a somewhat extended state. That is, by allowing the band-shaped body 81 to slightly press the outer circumferential surface of the cryogenic flexible hose 50 by the elastic force of the elastic band portion 82, the movement supporting means 80 is firmly coupled to the cryogenic flexible hose 50. can do.

Next, the movement guide means 90 will be described with reference to FIGS. 13 and 15.

The movement guide means 90 is included in the ship's liquefied liquefied gas transfer system according to an embodiment of the present invention, and detachably coupled to the support hose 41 and the cryogenic flexible hose 50. The movement guide means 90 couples the cryogenic flexible hose 50 to the support hose 41 so as to be movable, so that the cryogenic flexible hose 50 is moved along the longitudinal direction of the support hose 41. Do not move away from the support hose 41 by shaking or impact.

The movement guide means 90 includes a saddle 95 and a plurality of guide rollers 98 and 99.

The saddle 95 abuts the outer circumferential surface of the cryogenic flexible hose 50. Here, in the case where the moving support means 80 described with reference to FIG. 14 is coupled to the cryogenic flexible hose 50, an elastic band portion (82 of FIG. 14) is provided between the saddle 95 and the outer circumferential surface of the cryogenic flexible hose 50. May be interposed. If the frictional force between the cryogenic flexible hose 50 and the support hose 41 is so small that the moving support means 80 is not used, the saddle 95 may directly contact the outer circumferential surface of the cryogenic flexible hose 50. .

Guide rollers (98, 99) are in contact with the outer peripheral surface of the support hose 41, when the movement guide means 90 moves relative to the support hose 41 with the cryogenic flexible hose 50, the movement guide means The friction force acting between the 90 and the support hose 41 is reduced.

The guide roller 99 on one side includes a plurality of rotation support shafts 99b and a plurality of rollers 99a rotatably coupled to the rotation support shafts 99b. In consideration of the curvature of the support hose 41, the plurality of rotation support shafts 99b may be manufactured to have a shape in which the plurality of rollers 99a may be smoothly rotated by contacting the outer circumferential surface of the support hose 41. The other side of the guide roller 98 also has the same structure and operation as the guide roller 99 on one side, and the description of the guide roller 98 on the other side will be replaced with the description of the guide roller 99 on the one side.

The saddle 95 and the plurality of guide rollers 98, 99 are connected to each other by a plurality of elastic portions 91, 92, 96, 97, and between the pair of elastic portions 91, 92, A pair of detachable opening and closing means 93 and 94 may be included. The opening and closing means 93 and 94 are for easily coupling the movement guide means 90 to the cryogenic flexible hose 50 and the support hose 41, and may be additionally installed as necessary.

The elastic parts 91 and 96 may be made of an elastic material and have a band shape, like the elastic band part 82 of the moving support means 80.

For reference, although not shown, the saddle 95 may be integrally formed with the adjacent elastic parts 91 and 96.

Figure 16 shows the support hose support means of the stern ship liquefied gas transfer system according to an embodiment of the present invention.

The support hose support means 45 is included in the liquefied liquefied gas transport system for ships according to an embodiment of the present invention, the support hose 41 and the deck 12 and the second vessel 20 of the first vessel 10 May be interposed between the decks 22.

The support hose support means 45 includes a main body 46 and a plurality of wheels 48. A support groove 47 is formed in the main body 46, and a part of the outer circumferential surface of the support hose 41 is inserted into the support groove 47. The plurality of wheels 48 are rotatably installed on the lower side of the main body, and support the main body 46 to be movable.

As described above, the first vessel 10 and the second vessel 20 may be a relative position change by the environmental load. When the support hose 41 connects the first vessel 10 and the second vessel 20, if the relative position change occurs repeatedly between the first vessel 10 and the second vessel 20, the support hose ( 41 may rub against the decks 12 and 22 frequently and be damaged.

Therefore, when the support hose 41 is supported by the support hose support means 45 through the support hose support means 45 between the support hose 41 and the decks 12 and 22, the support hose 41 is supported. Can be prevented from being damaged by friction with the decks 12 and 22.

FIG. 17 is a view for explaining a liquefied liquefied gas transport method according to an embodiment of the present invention.

Referring to FIG. 17, in the method for transferring a liquefied liquefied gas according to an embodiment of the present invention, the messenger line 32 is thrown from the first vessel 10 to the second vessel 20 (S10) and the messenger line ( Connecting the 32 to the second vessel 20 and allowing the support hose 41 installed on the first vessel 10 by the messenger line 32 to be towed to the second vessel 20 (S20). And, the step of injecting sea water or fresh water into the support hose 41 (S30), and the cryogenic flexible hose 50 supported by the support hose 41 from the first vessel 10 to the second vessel 20 Moving (S40) includes a step (S40).

The method for transporting liquefied liquefied gas according to an embodiment of the present invention is a method for transferring liquefied gas for transferring liquefied gas between the first vessel 10 and the second vessel 20 anchored with a gap therebetween. 1 and 16, the same description as above will be omitted.

However, after the liquefied gas transfer between the first vessel 10 and the second vessel 20 is completed, the above-described method for transferring the liquefied liquefied gas may proceed in the reverse order. That is, after the cryogenic flexible hose 50 is separated from the manifold 25, the cryogenic flexible hose 50 is moved to the hose support 70 using the second traction means 65 of the traction means, and the support hose. The support hose 41 is made to be flexible again by discharging the seawater or fresh water injected into the (41). Thereafter, the support hose 41 may be wound by a support hose winch (not shown) installed in the machine rooms 17 and 18 to recover the support hose 41.

Although the above description of the ship-to-line liquefied gas transfer system and method thereof according to an embodiment of the present invention, the spirit of the present invention is not limited to the embodiments presented herein, those skilled in the art to understand the spirit of the present invention Within the scope of the present invention, other embodiments may be easily proposed by adding, changing, deleting or adding components, but this will also fall within the scope of the present invention.

10: first vessel 17, 18: machine room
20: Second Ship 23: Bollard
25: manifold 32: messenger line
41: support hose 45: support hose support means
50: cryogenic flexible hose 61: first towing means
65: second towing means 70: hose support
80: moving support means 90: moving guide means

Claims (11)

A liquefied liquefied gas transfer system for transferring liquefied gas between a first vessel and a second vessel anchored at intervals,
A messenger line thrown from the first vessel to the second vessel;
A support hose installed in the first vessel, one end of the messenger line being connected to an intermediate region and being towed from the first vessel to the second vessel by the messenger line, and having seawater or fresh water injected or discharged therein; And
And a cryogenic flexible hose that is supported and moved by the support hose connecting the first vessel and the second vessel, and connects the first vessel and the second vessel.
The method of claim 1,
A rubber weight coupled to the messenger line; And
And a messenger line origin installed on the first vessel and connected to the other end of the messenger line to wind or unwind the messenger line.
The method of claim 1,
And a pump connected to one side or both sides of the support hose, the pump for injecting or discharging seawater or fresh water into the support hose.
The method of claim 3,
And a hose support installed on the first vessel, the hose support supporting the cryogenic flexible hose to be movable in the longitudinal direction.
The method of claim 4, wherein
The hose support,
A plurality of rollers for movably supporting the cryogenic flexible hose; And
And a pair of guide rails rotatably supporting both ends of the plurality of rollers.
The method of claim 5,
Traction means for towing the cryogenic flexible hose in one direction or the other direction,
The towing means,
A fastening portion coupled to the cryogenic flexible hose;
A tow ring detachable from the fastening unit;
A towing rope having one end connected to the towing ring; And
And a towing rope winch connected to the other end of the towing rope, the towing rope winch winding or unwinding the towing rope.
The method of claim 1,
Further comprising a moving support means detachably coupled to the cryogenic flexible hose,
The moving support means,
A band-shaped body having a curved plate portion surrounding a portion of an outer circumferential surface of the cryogenic flexible hose, and an elastic band portion coupled to both ends of the curved plate portion; And
And a plurality of roller means installed on one surface of the curved plate to reduce friction when the cryogenic flexible hose moves along the longitudinal direction of the support hose.
The method of claim 7, wherein
The moving support means,
And an opening and closing means installed in at least one of the curved plate portion and the portion where the elastic band portion is coupled.
The method of claim 1,
It further comprises a movement guide means detachably coupled in a shape surrounding the support hose and the cryogenic flexible hose,
The moving guide means,
Saddle-shaped saddle in contact with the outer peripheral surface of the cryogenic flexible hose; And
A plurality of guide rollers in contact with an outer circumferential surface of the support hose and reducing friction when the cryogenic flexible hose moves along the longitudinal direction of the support hose;
And the cryogenic flexible hose does not leave the support hose when the cryogenic flexible hose moves along the longitudinal direction of the support hose.
The method of claim 1,
The support hose further comprises a support hose support means interposed in a portion in contact with the first ship and the second ship,
The support hose receiving means,
A main body having a support groove into which a portion of the support hose is inserted; And
Ladle vessel liquefied gas transfer system comprising a plurality of wheels provided on the lower side of the main body.
A method for transporting liquefied gas for transferring liquefied gas between an anchored first vessel and a second vessel,
Throwing a messenger line from the first vessel to the second vessel and connecting to the second vessel;
Allowing the support hose installed on the first vessel to be towed by the messenger line to the second vessel;
Injecting sea water or fresh water to the support hose; And
And moving the cryogenic flexible hose supported by the support hose from the first vessel to the second vessel.

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