KR20130035108A - Support device of liquid cargo storage tank and ship having the same - Google Patents

Abstract

PURPOSE: A support device of a liquid cargo storage tank and a ship with the same are provided to simply and easily install the liquid cargo storage tank in a hull by using a stable connection structure. CONSTITUTION: A support device of a liquid cargo storage tank(100) is installed between the outer surface of a bulkhead(110) and the inner surface(2) of a hull. Semispherical protrusion parts are formed on the outer surface of the bulkhead and the inner surface of the hull. The support device comprises a connection member. One end of the connection member is connected to the protrusion parts of the bulkhead, and the other end thereof is coupled to the protrusion parts of the hull.

Description

SUPPORT DEVICE OF LIQUID CARGO STORAGE TANK AND SHIP HAVING THE SAME

The present invention relates to a support device for a liquid cargo storage tank and a ship having the same.

In general, various types of ships are being manufactured to transport liquid cargo by sea. For example, in order to transfer liquid cargo such as liquefied natural gas (LNG), liquefied petroleum gas (LPG), and crude oil (crude oil), the hull is manufactured according to the characteristics of each cargo, and the cargo is transported at low temperature or high pressure. Special types of cargo hold have been applied to keep it sealed and warm.

In particular, ships carrying liquefied gas are largely divided into an independent tank type and a membrane type according to the type of the storage tank. Here, the independent tank type is a method in which the storage tank is not formed integrally with the hull and the independent storage tank is supported by the hull supporting device, and according to the installation number and the use pressure of the barrier preventing the leakage of liquefied gas, Type A, B , Separated by C. Type A is the installation of both primary and secondary barriers, which corresponds to AKER's Aluminum Double Barrier Tank (ADBT). Type B has a primary barrier and a drip tray to prepare for leakage of the primary barrier. The tank has a spherical moss shape and a prismatic type IB SPB. (Self-supporting, Prismatic-shape IMO type B). Type C is a pressure vessel with a primary barrier. Membrane types are classified into GTT Mark-III type and GTT NO 96 type in such a way that the storage tank is formed integrally with the hull.

Among these, the independent tank type can be installed on the ship separately from the ship and can be installed on the ship. It has a relatively strong point than the membrane type in terms of structural safety, and its insulation system is exposed to the outside of the tank for easy repair and management. .

However, since the independent tank type is not directly coupled to the hull, the hull may be damaged by the inclination (sliding) of the tank during the operation of the ship. In order to prevent this, in the conventional case, a huge support was installed on each of the upper and lower sides and the side of the tank.

However, these supports have difficulty in installing tanks in the hull due to their size and weight, and due to the large contact area in contact with the inner surface of the hull, heat exchange occurs actively between the tank and the hull, which greatly reduces the insulation performance of the cargo hold. There is.

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-278380 Patent Document 2: Korean Patent Publication No. 2010-0081027

Embodiments of the present invention provide a support device for a liquid cargo storage tank having a simple and stable connection structure and a vessel equipped with the same, which can be easily and easily installed in a ship body.

According to an aspect of the present invention, a support device which is supported on the inner surface of the hull and is formed between the outer surface of the barrier and the inner surface of the hull to support the inner surface of the hull so that a barrier forming an inner space for storing liquid cargo is provided. Hemispherical protrusions are formed on the outer surface and the inner surface of the hull, respectively, one end is coupled to the protrusion of the barrier, the other end is characterized in that it comprises a connecting member coupled to the protrusion of the inner surface of the hull, cargo storage tank A support device is provided.

The connection member and the protrusion may be welded together.

Fastening holes may be formed in the protrusions to fasten ends of the connection members, respectively.

And a pair of connecting members coupled to the outer surface of the barrier and the protrusions of the inner surface of the hull, respectively, and a tension adjusting bar connected to the pair of connecting members to adjust the tension of the connecting member. have.

The tension adjusting bar has a screw hole formed to be screwed with the pair of connecting members, and when the tension control bar is rotated in one direction, the pair of connecting members can be inserted into the screw holes at the same time.

The connection member may further include a connection member clamp so that an end of the connection member passes through the fastening hole so that a part of the end of the connection member is joined to another part of the connection member.

The protrusions respectively formed on the outer surface of the barrier and the inner surface of the hull may be disposed to face each other, and the connection member may be connected to the protrusions facing each other.

The connecting member may be inclinedly connected to be a diagonal line.

A plurality of connection members may be provided, and the plurality of connection members may be connected to the protrusions formed on the outer surface of the barrier and the inner surface of the hull, respectively.

The connection member may include at least one of a metal rod, a wire, a chain, a cable, and a rope.

According to another aspect of the invention, there is provided a vessel provided with a support device for the liquid cargo storage tank.

According to the embodiment of the present invention, the liquid cargo storage tank can be easily and easily installed in the hull using a simple and stable connection structure, and at the same time, heat exchange between the barrier and the hull can be minimized.

1 is a cross-sectional view showing a vessel having a liquid cargo storage tank according to an embodiment of the present invention.
Figure 2 schematically shows an embodiment of a first support device for supporting between the barrier and the inner surface of the hull in a ship having a liquid cargo storage tank according to an embodiment of the present invention.
Figure 3 schematically shows another embodiment of the first support device for supporting between the barrier and the inner surface of the hull in a vessel having a liquid cargo storage tank according to an embodiment of the present invention.
4 is a cross-sectional view showing a modification of the ship with a liquid cargo storage tank according to an embodiment of the present invention.
5 is a cross-sectional view showing another modification of the ship with a liquid cargo storage tank 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. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, an embodiment of a support device for a liquid cargo storage tank and a vessel having the same according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding components are the same. The reference numerals will be given and overlapping description thereof will be omitted.

1 is a cross-sectional view showing a vessel 1000 having a liquid cargo storage tank according to an embodiment of the present invention.

Referring to FIG. 1, a vessel 1000 having a liquid cargo storage tank according to the present embodiment is a vessel having an independent storage tank extending in the longitudinal direction of the hull 1, and the hull 1 and the storage tank. It comprises 100.

The vessel in the present invention may include a floating offshore structure having a liquefied gas storage tank, such as LNG-FPSO (Floating Production Storage Offloading), as well as a conventional vessel that can be propelled with self-defense capability.

The hull 1 may consist of a double hull of an outer hull and an inner hull, and a liquid cargo storage tank 100 for storing liquid cargo inside the inner hull of the hull 1. Will be located.

As shown in FIG. 1, in a ship 1000 having a liquid cargo storage tank according to the present embodiment, the liquid cargo storage tank 100 is an independent type storage tank and supports the barrier 110 and the first support. It is configured to include the device 120, it can be manufactured separately from the hull 1 and mounted in the hull (1).

According to the present embodiment, the barrier 110 is supported on the inner surface 2 of the hull between the barrier 110 forming the outline of the liquid cargo storage tank 100 and the inner surface 2 of the hull surrounding the barrier 110. The first support device 120 is interposed.

According to this embodiment, the first support device 120 composed of a thin, lightweight connection member 124 such as a wire, without having to install a conventional large and heavy support to support the barrier 110 on the hull inner surface 2. The barrier 110 may be supported on the inner surface 2 of the hull simply and easily.

In addition, since the first support device 120 is composed of a connecting member 124 having a small cross-sectional area such as a wire, the existing large, heavy and large cross-sectional support is disposed between the barrier 110 and the hull inner surface 2. In this case, the contact area can be significantly reduced.

That is, by greatly reducing the overall contact area of the first support device 120 in contact with the barrier 110 and the hull inner surface 2, it is possible to minimize the weakening of the thermal insulation performance of the liquid cargo storage tank 100. .

In addition, since the first support device 120 according to the present embodiment can be made smaller and lighter than the existing large and heavy support, the overall material cost can be reduced and the process can be shortened.

Hereinafter, each configuration of the liquid cargo storage tank 100 according to the present embodiment will be described in more detail with reference to FIG. 1.

As shown in FIG. 1, the barrier 110 may be supported by being spaced apart from the hull inner surface 2 of the vessel 1000 as a sealed container forming an inner space 112 to store liquid cargo therein.

For reference, the liquid cargo in the present invention is a concept including both liquefied natural gas (LNG), liquefied petroleum gas (LPG), crude oil, liquid raw materials, and other liquids.

For example, when the barrier 110 stores cryogenic liquefied gas, the barrier 110 may be made of a metal material such as aluminum alloy, stainless steel, or Ni-9% steel to store cryogenic liquid cargo. have.

As shown in FIG. 1, the first support device 120 supports the barrier 110 so that the barrier 110 is supported by the hull inner surface 2.

Meanwhile, the lower portion of the barrier 110 may be supported by the second support device 130 interposed between the hull inner surface 2 and the barrier 110 outer surface.

Hereinafter, the first support device 120 will be described in more detail with reference to FIGS. 2 and 3.

2 and 3 illustrate various modifications of the first support device 120 supporting the barrier 110 and the hull inner surface 2 in the ship 1000 having the liquid cargo storage tank according to the present embodiment. It is a schematic drawing.

As shown in FIG. 2, the first support device 120 may include a connection member 124.

In this case, each of the pair of connecting members 124 is coupled to the outer surface of the barrier 110 and the hull inner surface 2, and the other end is connected by the tension control bar 128 to the liquid cargo storage tank It can be supported in the hull (1), the end of the connecting member 124 may be welded to the outer surface and the hull inner surface (2) of the barrier 110, respectively.

More specifically, hemispherical protrusions 122 may be formed on the outer surface and the hull inner surface 2 of the barrier 110, and both ends of the connecting member 124 are coupled to the hemispherical protrusions 122, respectively. The cargo storage tank can be supported in the hull 1.

That is, by providing hemispherical protrusions 122 on the outer surface of the barrier 110 and the inner surface 2 of the hull, which are the end portions of the connecting member 124, the stress is applied to the portion where the connecting member 124 is connected. Concentration can be minimized and the structural stability of the first support device 120 can be secured by dispersing the stress through the hemispherical protrusion 122.

The protrusion 122 may be integrally formed on the outer surface and the hull inner surface 2 of the barrier 110 by a method such as extrusion molding, or may be combined by welding or the like.

When protrusions 122 are fixedly coupled to the outer surface or hull inner surface 2 of the barrier 110 by welding or the like, each protrusion 122 is welded to the outer surface or hull inner surface of its corresponding barrier 110 for weldability. It may be made of the same material as (2).

That is, in the case of the protrusion 122 installed on the outer surface of the barrier 110, the barrier 110 may be made of a material that can have the same durability as at room temperature even at cryogenic temperatures, for example, aluminum alloy, stainless steel, It may be made of a metal material such as Ni-9% steel.

The end portions of the connection member 124 may be connected to the protrusions 122 formed on the outer surface and the hull inner surface 2 of the barrier 110 in a welded manner as in the above-described embodiment, and as described below It may be connected in a fastening manner.

The tension adjusting bar 128 has a circumferential body portion 128a having open side surfaces facing each other and a screw hole 128b formed so that the connecting members 124 can be screwed at both ends of the body portion 128a, respectively. It includes, and the connection member 124 is inserted into both ends of the tension control bar 128 through the screw hole 128b can be screwed. When the tension adjustment bar 128 is rotated in one direction, the pair of connection members 124 coupled to the screw holes 128b are simultaneously engaged, and when the tension adjustment bar 128 is rotated in another direction, the thread of the connection member 124 is formed to loosen the connection. It is preferable to be. Therefore, the tension of the connecting member 124 can be adjusted by rotating the tension adjusting bar 128 in one direction.

Thus, by installing a tension adjusting bar 128 that can adjust the tension of the connecting member 124 between the pair of connecting members 124, such as thermal expansion or thermal contraction between the outer surface of the barrier 110 and the hull inner surface (2) It can respond more quickly to the deformation, it is possible to more easily adjust the tension of the connecting member 124 according to the loading amount of the liquid cargo stored in the barrier 110 or various operating conditions.

In this case, both ends of the connecting member 124 may be coupled to each of the protrusions 122 by various fastening methods such as welding coupling (see FIG. 2) or wire fastening coupling (see FIG. 3) using the connecting member clamp 127. Can be.

As the connecting member 124, various connecting means such as a rod-shaped metal rod, a wire, a chain, a cable, a rope, and the like may be used.

In general, the barrier 110 forming the outline of the liquid cargo storage tank 100 mounted in the hull 1 has a pitch, a roll, a yaw, Pulling to one side may occur due to an external force such as weaving.

The connection member 124 is a member for fixing the barrier 110 to the hull inner surface 2 so as to prevent the barrier 110 from being pulled to one side in the hull 1, and rigidity capable of withstanding such an external force is required.

The connection member 124 may be made of a metal material or a composite material to withstand such external forces.

Specifically, the connection member 124 may be made of the same or similar metal material as the barrier 110 to have the same durability at room temperature even at cryogenic temperatures.

As such, when the connecting member 124 is made of a metal material, the connecting member 124 may be formed of a rod-shaped metal rod as shown in FIG. 2, and one end of each of the pair of connecting members 124 is described above. Each of the protrusions 122 may be coupled to each other by welding, and the other end thereof may be connected by the tension control bar 128. In this case, various known welding methods can be applied to this embodiment.

In addition to the above-described embodiment of the present invention, the connection member 124 is made of a composite material that is not stretched while being strong in tensile force, such as fiber reinforced plastics, carbon fibers, and aramid fibers. It may be made of a fiber material.

When the connection member 124 is made of a fiber material as described above, both ends of the connection member 124 are inserted into and fastened to the fastening holes 125b respectively formed in the protrusions 122 as shown in FIG. 3. Can be combined.

3, the end of the connecting member 124 is inserted into the fastening hole 125b, and then a part of the inserted end is folded and curved, and then a part of the end of the connecting member 124 is folded. In a curved state to face the other part, a part of the ends of the connection member 124 may be joined using the connection member clamp 127 to be joined to the other part.

As such, by using the connecting member 124 made of a material which is strong in tensile strength and resistant to cryogenic cold and heat, the barrier 110 is moved back and forth in the hull 1 from side to side in various external forces generated by the operation of the vessel 1000. Minimize the movement.

In addition, since the connecting member 124 can minimize its cross-sectional area, such as the metal rods or wires described above, the connecting member 124 is interposed between the outer surface of the barrier 110 and the inner surface of the hull 2 to form a gap between the barrier 110 and the inner surface of the hull 2. When connected to each other, a thermal bridge effect between the barrier 110 and the hull 1 can be minimized.

That is, without the need to further thicken the thickness of the heat insulating member (not shown) attached to the outside of the barrier 110, it is possible to maximize the heat insulating performance of the liquid cargo storage tank 100 only by replacing the existing support device. Can be.

On the other hand, a plurality of protrusions 122 may be provided between the barrier 110 and the hull inner surface (2). In addition, a plurality of connecting members 124 may be installed between the barrier 110 and the hull inner surface (2).

In this case, the connecting member 124, one end thereof may be connected to any one of the plurality of protrusions 122 formed on the outer surface of the barrier 110, the other end of the plurality of protrusions formed on the inner surface (2) ( 122).

Both ends of the connecting member 124 may be connected to the protrusions 122 facing each other, as shown in FIG. 1, or may be connected to each other.

4 and 5, the first support device 120 of the liquid cargo storage tank 100 according to the present embodiment may be installed in various forms.

4 is a view showing another installation form of the first support device 120 ′ of the liquid cargo storage tank 100 according to the present embodiment, and FIG. 5 is a view of the liquid cargo storage tank 100 according to the present embodiment. 1 is a view showing still another installation form of the support device (120 ").

As shown in FIGS. 4 and 5, the connecting member 124 may be inclinedly connected to be a diagonal line. That is, one end of the connecting member 124 may be connected to any one of the plurality of protrusions 122, and the other end thereof may be connected to any one of the plurality of protrusions 122 disposed in a diagonal direction with respect to the protrusion 122. have. As such, the connection member 124 may be installed to be inclined between the barrier 110 and the hull inner surface 2.

In this case, a plurality of connection members 124 may be connected to each of the protrusions 122 at one time.

In the case of FIG. 5, the protrusion 122 of the hull inner surface 2 and the protrusion 122 of the barrier 110 are preferably formed in a zigzag shape to prevent interference between the inclined connection members 124.

In addition, although not shown, for example, the connecting member 124 may be connected in various forms such that diagonal lines and parallel lines are formed at the same time on each of the protrusions 122.

Meanwhile, as shown in FIG. 1, the lower portion of the barrier 110 may be supported by the second support device 130 interposed between the hull inner surface 2 and the outer surface of the barrier 110.

As the second support device 130, a wooden block having low thermal conductivity or a block of other composite material may be used.

Meanwhile, in the present embodiment, the case in which the first support device 120 is installed on the outer side surface of the barrier 110 is described as an example, but the present invention is not limited thereto, and the first support device according to the present embodiment ( 120 may also be installed between the upper surface portion of the barrier 110 and the hull inner surface (2).

As described above, according to various embodiments of the present disclosure, the liquid cargo storage tank may be installed in the hull simply and easily using a simple and stable connection structure, and at the same time, heat exchange between the barrier and the hull may be minimized.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

1000: ship
1: hull 2: inner hull
100: liquid cargo storage tank 110: barrier
112: internal space 120, 120 ', 120 ": first support device
122: first anchor 124: second anchor
125a: screw hole 125b: tightening hole
126: connecting member 127: connecting member clamp
128: tension adjustment bar 128a: body portion
128b: screw hole 130: second support device

Claims (11)

A support device which is supported on the inner surface of the hull and is installed between the outer surface of the barrier and the inner surface of the hull so that a barrier of the liquid cargo storage tank forming an inner space for storing the liquid cargo is supported on the inner surface of the hull.
Hemispherical protrusions are formed on the outer surface of the barrier and the inner surface of the hull, respectively.
And a connecting member having one end coupled to the protrusion of the barrier and the other end coupled to the protrusion of the inner surface of the hull.
The method of claim 1,
The connecting member and the protrusion is characterized in that the welding device, the liquid cargo storage tank supporting device.
The method of claim 1,
The projection portion is characterized in that the fastening hole is formed so that the end of each of the connecting member is fastened, the liquid cargo storage tank supporting device.
The method of claim 2,
And a pair of connecting members coupled to the outer surface of the barrier and the protrusions of the inner surface of the hull, respectively.
And a tension adjusting bar connected to the pair of connecting members to adjust a tension of the connecting member.
5. The method of claim 4,
The tension adjusting bar has a screw hole formed to be screwed with the pair of connecting members, and when the tension control bar is rotated in one direction, the pair of connecting members are inserted into the screw hole at the same time, liquid cargo Support for storage tanks.
The method of claim 3,
And a connection member clamp so that an end portion of the connection member passes through the fastening hole so that a portion of the end portion of the connection member is joined to another part of the connection member.
5. The method of claim 4,
The protrusions formed on the outer surface of the barrier and the inner surface of the hull are disposed to face each other,
The connecting member is a support device for a liquid cargo storage tank, characterized in that both ends are connected to each of the protrusions facing each other.
The method of claim 7, wherein
The connecting member is a support device for a liquid cargo storage tank, characterized in that the inclined connection so as to be a diagonal line (diagonal line).
The method of claim 1,
The connecting member is provided with a plurality,
The protrusions formed on the outer surface of the barrier and the inner surface of the hull, respectively, characterized in that the plurality of connecting members are connected, the liquid cargo storage tank supporting device.
10. The method according to any one of claims 1 to 9,
The connecting member includes:
A support device for a liquid cargo storage tank, characterized in that it comprises at least one of a metal rod, a wire, a chain, a cable and a rope.
A ship provided with a support device for a liquid cargo storage tank according to any one of claims 1 to 9.

Images