WO2018012661A1

WO2018012661A1 - System for retaining corner portion of liquid cargo hold

Info

Publication number: WO2018012661A1
Application number: PCT/KR2016/007796
Authority: WO
Inventors: 성홍근; 정동호; 조석규; 김용태; 김재웅; 표창민; 신정섭; 허행성; 박광준
Original assignee: 한국해양과학기술원
Priority date: 2016-07-11
Filing date: 2016-07-18
Publication date: 2018-01-18
Also published as: KR101837281B1; KR20180007031A

Abstract

The present invention relates to a system for retaining a corner portion of a liquid cargo hold, wherein a primary finish wall portion is retained by a retaining portion in order to form a finish wall having an inner corner portion of a cargo hold formed on a primary heat-insulating layer, and a structure that reinforces the primary finish wall portion is formed by a reinforcement portion, thereby making it possible to improve the convenience in the operation for implementing an improved structure for arranging and fastening a corner portion heat-insulating panel of the liquid cargo hold.

Description

Corner fixing system of liquid cargo hold

The present invention relates to a corner fixing system of the liquid cargo hold, and more particularly to the corner fixing of the liquid cargo hold to enable increased working convenience for the implementation of the improved structure of the arrangement and fastening of the corner insulation panel of the liquid cargo hold. It's about the system.

LNG is obtained by cooling natural gas to cryogenic temperature (approximately -163 ℃), and its volume is reduced to about 1/600 than that of natural gas in gas state, so it is very suitable for long distance transportation by sea.

LNG Carrier (LNG Carrier) for loading and unloading LNG to land requirements by operating the sea with LNG, or LNG RV that reloads LNG stored in natural gas state after recharging the stored LNG after arriving at the land demand by operating the sea with LNG. Regasification vessels are equipped with LNG storage tanks (called cargo holds) that can withstand the cryogenic temperatures of LNG.

Recently, the demand for floating offshore structures such as LNG Floating, Production, Storage and Offloading (FPSO) or LNG Floating Storage and Regasification Unit (FSRU) is gradually increasing, and LNG storage tanks are also installed in these floating offshore structures. .

LNG storage tanks are divided into independent tank type and membrane type according to whether the load of the cargo directly acts on the insulation. Membrane storage tanks are usually GTT NO 96 type and TGZ Mark III. It is divided into type, and independent tank type storage tank is divided into MOSS type and IHI-SPB type.

*

* For membrane type of conventional LNG storage tank, double barrier is used to ensure safety.

The primary barrier is mainly made of SUS304 or Invar steel metal material, and the secondary barrier is mainly made of SUS304 or Invar steel metal material and triplex material.

As described in the background art of "Corner Panel for Cryogenic Fluid Storage Tank and Cryogenic Fluid Insulation System With It" of Patent No. 10-1584574, the corner fixing system (hereinafter 'steel corner') of the conventional liquid cargo window is shown in FIG. 7, the first panel 210 and the second panel 220 are orthogonal to each other in a stainless steel structure, and the connection panel 230 connects the first and

second panels

210 and 220 to each other. The reinforcement 300 is welded to the 210.

The wood block 110 is fastened to the lower side of the first panel 210 of the steel corner to be connected to the heat insulating material 100 of the corner.

Here, the insulating block 100 of the RPUF material is inserted into the space between the heat insulating material 100 connected to the wood blocks 110 of each steel corner and the adjacent heat insulating material 100.

However, this steel corner is to cut the wood block 110 correspondingly between the reinforcement 300 formed on the lower side of the first panel 210 of each of the steel corner, and in the space between the steel corner and the adjacent steel corner Filling the insulating block 120, such as the work was additionally cumbersome.

In particular, an empty space is inevitably generated between the heat insulating material 100 and the heat insulating block 120 according to the construction work of the steel corner, and this empty space is a general problem due to the heat loss of the liquid cargo contained in the finished liquid cargo hold. Can lead to.

In particular, since the corners of the liquid cargo hold including the steel corners are exposed to sloshing load, the most important part of the cargo hold design is the design to maintain structural stability and structural strength. And there is a lot of risk of serious damage even in maintaining structural strength.

The present invention has been invented to improve the above problems, and provides a system for fixing the corner portion of the liquid cargo window to enable increased work convenience for the implementation of the improved structure of the arrangement and fastening of the corner insulation panel of the liquid cargo window. It is to.

In order to achieve the above object, the present invention is to be mounted on the third and fourth surfaces of the secondary barrier provided on the first and second surfaces forming the corner portion of the hull (hull) A primary heat insulation layer forming an inner corner portion corresponding to the corner portion of the hull; A primary finishing wall part mounted on the fifth and sixth surfaces of the primary insulating layer to form a finishing wall on which an inner corner of the cargo hold is formed; Reinforcing parts formed on both sides of an inner surface of the first finishing wall part forming the finishing wall; And a fixing part provided on an outer surface of the first finishing wall part facing the fifth surface and the sixth surface to fix the first finishing wall part to the first heat insulating layer. A secondary fixation system can be provided.

Here, the primary heat insulation layer, the primary bottom panel is provided on each of the third surface and the fourth surface of the secondary barrier, and the primary cover panel spaced apart from each other and the primary floor panel, And a primary heat insulating material disposed between the primary bottom panel and the primary cover panel, wherein an outer surface of the primary cover panel facing the third surface and the fourth surface is the fifth surface and the sixth surface. It is characterized by being a cotton.

In this case, the first finishing wall portion, the first finishing piece seated and fixed to the fifth surface, the second finishing piece seated and fixed to the sixth surface, the first finishing piece and the second finishing piece mutually And a corner forming piece for connecting the inner corner of the cargo hold, wherein the reinforcing part is formed on both sides of the inner surface of the first finishing piece, the second finishing piece, and the corner forming piece, and the fixing part is formed of the first finishing piece. It is characterized in that formed on the piece and the second finishing piece.

And, the reinforcement portion, characterized in that it comprises a reinforcement ribs respectively protruding on both sides of the inner surface of the primary finishing wall portion.

The fixing part may include at least one first fixing stud protruding from the surface facing the fifth surface of the first finishing wall part, and a surface facing the sixth surface of the outer surface of the first finishing wall part. At least one second fixing stud protruding from it.

According to the present invention having the above configuration, the following effects can be achieved.

First, the present invention is to form a reinforcing structure of the primary finishing wall portion and the primary finishing wall by the reinforcing portion to be fixed by the fixing portion to form a finishing wall formed inner corner of the cargo hold in the primary heat insulating layer, the primary finishing By forming the reinforcing portion on the inner surface of the wall portion, when connecting the insulation panel of the cargo hold corner portion, it is possible to reduce the cumbersome work maneuver, such as cutting and inserting the insulating material in the block shape can greatly improve the convenience of the work.

In particular, the present invention is the corner portion of the conventional liquid cargo window that is likely to cause a variety of problems such as heat loss due to the gap between the insulation and the insulation due to cutting and inserting the insulation in a block shape to connect between the insulation and the insulation. Compared to the fixed structure, it is possible to provide a liquid cargo hold with minimal heat loss.

In other words, the present invention omits the cumbersome work of cutting and inserting the RPUF insulation into the block shape between the wood block, the primary finishing wall portion on the primary insulation layer made of integral insulation without any cuts and voids Since the construction can be installed, it is possible to produce a liquid cargo hold minimized the heat loss generation site.

1 is a perspective view showing the appearance of the primary finishing wall portion and the reinforcement portion and the main part of the corner fixing system of the liquid cargo window according to an embodiment of the present invention

Figure 2 is a view showing the appearance of the primary finishing wall portion, the reinforcement and the fixing portion of the main part of the corner fixing system of the liquid cargo window according to an embodiment of the present invention, a side conceptual view showing that viewed from the arrow D direction of FIG.

FIG. 3 is a front conceptual view illustrating the exterior of a primary finishing wall part, a reinforcement part, and a fixing part, which are main parts of a corner fixing system of a liquid cargo window according to an embodiment of the present invention, and viewed from the arrow A direction of FIG. 1.

4 is a partially exploded perspective view showing the overall structure of the corner fixing system of the liquid cargo hold according to an embodiment of the present invention

5 is a perspective view showing the overall structure of the corner fixing system of the liquid cargo hold according to an embodiment of the present invention

Figure 6 is a perspective view showing the appearance of the corner fixing system of the conventional liquid cargo window

FIG. 7 is a front conceptual view of what is seen from the arrow A direction of FIG.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms.

In this specification, the embodiments are provided so that the disclosure of the present invention may be completed and the scope of the present invention may be completely provided to those skilled in the art.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations and well known techniques are not described in detail in order to avoid obscuring the present invention.

In addition, the same reference numerals throughout the specification refer to the same components, and the terminology (discussed) used herein is for the purpose of describing the embodiments are not intended to limit the invention.

As used herein, the singular forms "a", "an" and "the" include plural unless the context clearly dictates otherwise, and the elements and acts referred to as 'comprises' or 'do' not exclude the presence or addition of one or more other components and acts. .

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art.

In addition, the terms defined in the commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

First, Figure 1 is a perspective view showing the appearance of the primary finishing wall portion, the reinforcement portion and the main part of the corner fixing system of the liquid cargo window according to an embodiment of the present invention.

And, Figure 2 shows the appearance of the primary finishing wall portion, the reinforcing portion and the fixing portion of the main part of the corner fixing system of the liquid cargo window according to an embodiment of the present invention, showing that viewed from the arrow D direction of FIG. Side conceptual diagram.

And, Figure 3 shows the appearance of the primary finishing wall portion, the reinforcement and the fixing portion of the main portion of the corner fixing system of the liquid cargo window according to an embodiment of the present invention, showing that viewed from the arrow A direction of FIG. Front conceptual view.

And, Figure 4 is a partially exploded perspective view showing the overall structure of the corner fixing system of the liquid cargo window according to an embodiment of the present invention.

5 is a perspective view showing the overall structure of the corner fixing system of the liquid cargo window according to an embodiment of the present invention.

For reference, FIGS. 4 and 5 omit the illustration of the secondary finishing wall of the metallic material, that is, the secondary panel, of the secondary barrier for convenience of drawing.

In addition, the

original characters

①, ②, ③, ④, ⑤, ⑥ in Figure 4 indicate the first surface, the second surface, the third surface, the fourth surface, the fifth surface, and the sixth surface, respectively, which will be described later, In the following, separate reference numerals are omitted.

Among these, the third surface ③ and the fourth surface ④ are defined as pointing to the outer surface of the secondary panel, not shown as described above, and the fifth surface ⑤ and the sixth surface ⑥ are illustrated in FIG. When the primary finishing wall portion 200, which is already shown as fixed to the primary insulation layer 100 in FIG. 4, is separated from the primary insulation layer 100, the surface on the primary insulation layer 100 is defined.

As shown in the drawing, it can be understood that the reinforcement part 30 is formed on the inner surface of the primary finishing wall part 20 fixed to the fixing part 50 to the primary heat insulating layer 10.

The primary thermal insulation layer 10 is mounted on the third and fourth surfaces of the secondary barrier 40 provided on the first and second surfaces forming the corner portions of the hull 60. In this case, the inner corner portion corresponding to the corner portion of the hull 60 is formed to form a primary barrier together with the primary finishing wall portion 20 to be described later.

The primary finishing wall portion 20 is formed on the fifth and sixth surfaces of the primary insulating layer 10 to form a finishing wall formed with the inner corner of the cargo hold, mainly using a metal material of SUS304 or invar steel Can be.

The reinforcement part 30 is formed on both sides of the inner surface of the primary finishing wall part 20 forming the finishing wall, and is provided to maintain structural stability and strength to physical shocks from various external sources including a sloshing load.

The fixing part 50 is provided on the outer surface of the fifth finishing surface and the first finishing wall portion 20 facing each other to fix the first finishing wall portion 20 to the first

heat insulating layer

10, 1 For fixing the primary finishing wall portion 20 easily and quickly in the correct position of the primary heat insulating layer (10).

Therefore, the present invention is a structure in which the reinforcing portion 30 is formed on the inner surface of the primary finishing wall portion 20 fixed to the primary insulating layer 10 by the fixing portion 50, when connecting the insulating panel corner insulation panel, Since it is possible to reduce cumbersome labor such as cutting and inserting the heat insulating material into a block shape, it will be possible to facilitate the work.

The present invention can be applied to the above embodiments, and of course, the following various embodiments are also applicable.

First, the secondary barrier 40 includes a secondary bottom panel 41 disposed on the first and second surfaces, respectively, and a secondary cover panel 42 spaced apart from each other and facing the secondary bottom panel 41. ), A secondary heat insulating material 43 disposed between the secondary bottom panel 41 and the secondary cover panel 42, and a secondary heat insulating layer mounted on the outer surface of the secondary cover panel 42 to seat the secondary heat insulating layer. Finish wall portion (not shown).

Here, the outer surface of the secondary cover panel 42 facing the first surface and the second surface is the third surface and the fourth surface.

*

* At this time, the primary heat insulating layer 10, the primary bottom panel (not shown) which are respectively provided on the third and fourth surfaces of the secondary barrier 40 and the primary floor panel facing away from each other disposed It comprises a primary cover panel (hereinafter not shown), and the primary heat insulating material 11 disposed between the primary bottom panel and the primary cover panel.

Therefore, the outer surface of the primary cover panel facing the third and fourth surfaces becomes the fifth and sixth surfaces.

In addition, the primary floor panel and the secondary floor panel 41 and the primary cover panel and the secondary cover panel 42 may be selected from a material such as plywood (plywood) as a material that can implement the thermal insulation performance with frictional force. .

Meanwhile, the first finishing wall part 20 will be described in detail with reference to FIGS. 1 to 3, wherein the first finishing piece 21 is fixed to the fifth surface and the second finishing piece is fixed to the sixth surface. It can be seen that the structure including a corner forming piece 23 which interconnects the 22 and the first finishing piece 21 and the second finishing piece 22 to form the inner corner of the cargo hold.

Here, the reinforcing portion 30 to be described later is formed on both sides of the inner surface of the first finishing piece 21, the second finishing piece 22 and the corner forming piece 23, the fixing portion 50 is the first finishing piece ( 21) and the second finishing piece 22 can be seen.

In this case, the reinforcement part 30 includes reinforcing ribs protruding on both sides of the inner surface of the primary finishing wall part 20, and the reinforcing ribs include the first reinforcing

ribs

31 and 31 and the second reinforcing ribs 32,. It can be seen that the structure including the 32) and the connecting reinforcement ribs (33, 33).

* The first reinforcing

ribs

31 and 31 are protruded on both sides of the inner surface of the first finishing piece 21, and the second reinforcing

ribs

32 and 32 are respectively protruding on both sides of the inner surface of the second finishing piece 22. The

connection reinforcement ribs

33 and 33 protrude on both sides of the inner surface of the corner forming piece 23 to connect the

first reinforcement ribs

31 and 31 and the

second reinforcement ribs

32 and 32, respectively.

Therefore, the reinforcing rib of such a structure can provide a structure in which distortion or deformation minimizes shape deformation while maintaining structural strength and stability even in the sloshing of the liquid cargo contained in the liquid cargo hold.

Meanwhile, the reinforcement part 30 further includes an angle piece 34, as shown in FIGS. 4 and 5, to finish the corrugation porion by finishing the neighboring first finishing wall part 20. To form.

That is, the angle piece 34 may include first reinforcing

ribs

31 and 31 of each of the first finishing pieces 21 adjacent to each other among the plurality of first finishing pieces 21 seated and fixed along the fifth surface,

Second reinforcing ribs

32 and 32 of each of the second finishing pieces 22 that are adjacent to each other among the plurality of second finishing pieces 22 that are seated and fixed along the sixth surface, and the corner forming pieces 23 that are adjacent to each other. ) Covers the respective connecting

reinforcement ribs

33, 33.

At the same time, the angle pieces 34 are connected to each other to fix the primary finishing wall portions 20 adjacent to each other by welding or the like.

The angle piece 34 includes a first cover portion 34a covering the first reinforcing

ribs

31 and 31 of each of the first finishing pieces 21 adjacent to each other, and the second finishing pieces 22 adjacent to each other. A second cover portion 34b covering each of the second reinforcing

ribs

32 and 32 and a connecting cover portion 34c covering the

connection reinforcing ribs

33 and 33 of each of the corner forming pieces 23 adjacent to each other. Include.

In addition, the angle piece 34 includes a first fixing piece 34d extending from both edges of the first cover part 34a and fixed to each of the first finishing pieces 21 adjacent to each other, and the second cover part. A second fixing piece 34e extending from both edges of the 34b and fixed to each of the second finishing pieces 22 adjacent to each other, and a corner extending from both edges of the connecting cover portion 34c and adjacent to each other, respectively. And a connection fixing piece 34f fixed to each of the forming pieces 23.

Here, the first cover part 34a, the connecting cover part 34c, and the second cover part 34b are sequentially connected and integrally formed, and at the same time, the first fixing piece 34d and the connecting fixing piece 34f and The second fixing piece 34e is sequentially formed and integrally formed.

Accordingly, both ends of the angle piece 34 are formed on both sides of the connecting piece (hereinafter not shown) or the second cover part 34b of the structure in which the first fixing piece 34d on both sides of the first cover part 34a extends. The two fasteners 34e are interconnected by elongated connecting pieces (hereinafter not shown) to form part forming the inner surface of the primary barrier of the liquid cargo hold.

Meanwhile, referring to FIGS. 1 to 3, the fixing part 50 may include at least one first fixing stud 51 protruding from a surface facing the fifth surface among the outer surfaces of the primary finishing wall part 20. It can be seen that at least one second fixing stud 52 protruding from the surface facing the sixth of the outer surface of the primary finishing wall portion 20.

That is, the fixing part 50, in more detail, includes a pair of first fixing studs 51 protruding from the surface facing the fifth surface of the first finishing piece 21.

And the fixed part 50 includes a pair of 2nd fixed studs 52 which protrude from the surface which faces the 6th surface of the 2nd finishing piece 22. As shown in FIG.

Here, each of the pair of first fixing studs 51 and the pair of second fixing studs 52 is fixed through the fifth and sixth surfaces by fixing nuts (hereinafter, not shown).

In this case, although the first and second fixing

studs

51 and 52 are illustrated as being formed in pairs, the present invention is not necessarily limited to such a structure, and various applications and modification designs such as being formed in a plurality or a single form. Of course it is possible.

As described above, the present invention has a basic technical idea to provide a system for fixing a corner portion of a liquid cargo window to increase the convenience of work for implementing an improved structure of the arrangement and fastening of the corner insulation panel of the liquid cargo window. Able to know.

In addition, many modifications and applications are possible to those skilled in the art within the scope of the basic technical idea of the present invention.

Claims

It is mounted on the 3rd and 4th surface of the secondary barrier provided in the 1st surface and the 2nd surface which form the corner part of a hull, The inner corner part corresponding to the corner part of the hull Primary insulating layer to form;

A primary finishing wall part mounted on the fifth and sixth surfaces of the primary insulating layer to form a finishing wall on which an inner corner of the cargo hold is formed;

Reinforcing parts formed on both sides of an inner surface of the first finishing wall part forming the finishing wall; And

Corner portion of the liquid cargo window provided on the outer surface of the primary finishing wall portion facing each other with the fifth surface and the sixth surface fixing the primary finishing wall portion to the primary heat insulating layer Fixing system.
The method according to claim 1,

The primary heat insulation layer,

A primary floor panel provided on each of the third and fourth surfaces of the secondary barrier;

A primary cover panel disposed to face the primary floor panel and spaced apart from each other;

It includes a primary heat insulating material disposed between the primary bottom panel and the primary cover panel,

And an outer surface of the primary cover panel facing the third surface and the fourth surface is the fifth surface and the sixth surface.
The method according to claim 1,

The primary finishing wall portion,

A first finishing piece seated and fixed to the fifth surface;

A second finishing piece seated and fixed to the sixth surface;

A corner forming piece interconnecting the first finishing piece and the second finishing piece and forming the inner corner of the cargo hold;

The reinforcing portion is formed on both sides of the inner surface of the first finishing piece, the second finishing piece and the corner forming piece,

And said fixing part is formed in said first and second finishing pieces.
The method according to claim 1,

The reinforcement part,

And a reinforcing rib protruding on both sides of the inner surface of the primary finishing wall portion, respectively.
The method according to claim 1,

The fixing portion,

At least one first fixing stud protruding from an outer surface of the first finishing wall portion facing the fifth surface;

And at least one second fixing stud protruding from an outer surface of the first finishing wall portion facing the sixth surface.