KR20190058885A - Flat Joint - Google Patents

Abstract

The present invention relates to a flat joint, which is inserted into a space formed between panels for sealing a liquefied gas cargo hold. The flat joint includes a plurality of blocks inserted into the space, wherein the plurality of blocks are provided in the longitudinal direction of the space and are stacked in the height direction of the panel.

Description

Flat Joint}

The present invention relates to a flat joint to be inserted between panels of a liquefied gas holding window.

Cryogenic liquids such as liquefied natural gas (LNG), liquid argon (LAR), liquid nitrogen (LIN), liquid oxygen (LOX) and liquid hydrogen (LH2) hold (or storage tank).

As an example of such a cryogenic liquid gas storage container, a cargo hold (or LNG cargo hold) for a liquefied natural gas is for storing cryogenic liquefied natural gas at about -165 DEG C, and is an independent type and a membrane type (Membrane Type) .

Membrane-type liquefied natural gas cargo holds are the most widely used nowadays because they have a larger storage capacity and are easier to manufacture than stand-alone type liquefied natural gas cargo holds. MARK-Ⅲ and NO-96 types are well known as membrane-type liquefied natural gas cargo holds. These holders for liquefied natural gas have a heat insulating structure for preventing leakage of liquefied natural gas and insulating a storage space where liquefied natural gas is stored. Among the MARK-Ⅲ and NO-96 types, Mark-Ⅲ type liquefied natural gas cargo holds are preferred over the NO-96 type because of their simple construction and low cost of materials.

The insulation structure of the membrane type liquefied natural gas cargo holds has a double seal structure to ensure high stability under extremely low temperatures. The inner primary barrier, which is directly contacted by liquefied natural gas, is made of stainless steel or INVAR steel with constant bending to reduce thermal stress during heat shrinkage. This primary barrier is attached to an insulating panel having a low heat transfer coefficient and fixed to the inner wall of the tank.

When the primary barrier is broken, the secondary barrier for preventing leakage of the liquefied natural gas is provided between the outer heat insulating panel coupled to the inner wall of the tank and the inner insulating panel to which the primary barrier is coupled Construction. This secondary barrier requires high airtightness to prevent leakage of cryogenic liquefied natural gas at -163 ° C. The construction of the secondary barrier uses a method of welding a stainless steel or an invar sheet or a hybrid type barrier sheet composed of a metal sheet and a composite material using a polymer adhesive.

The outer heat insulating panel is fixed to the inner wall of the tank by an adhesive or stud bolt, and the inner heat insulating panel is fixed on the outer heat insulating panel through an adhesive material or a mechanical fastening member. When the outer heat insulating panel is coupled to the inner wall of the wide tank, a connecting portion is formed between the two outer heat insulating panels adjacent to each other so that the side surfaces of the respective outer heat insulating panels face each other. This connection part is a part where a gap is generated between the outer heat insulating panels, and this connection part is intentionally formed to prevent interference between the panels when the hull is deformed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a flat joint which is inserted between panels so as to be hermetically sealed between panels of a liquefied gas holding window.

Other specific details of the invention are included in the detailed description and drawings.

According to an aspect of the present invention, there is provided a flat joint comprising:

A flat joint inserted in a space formed between panels for sealing a liquefied gas holding window, wherein the flat joint includes a plurality of blocks inserted into the space, the plurality of blocks being arranged along a longitudinal direction of the space , And are stacked in the height direction of the panel.

The block includes: a first block arranged along a longitudinal direction of the space; And a second block stacked on the first block and arranged along the longitudinal direction of the space.

Wherein the upper surface of the plurality of first blocks is in contact with the lower surface of the at least two second blocks or the lower surface of the plurality of second blocks is in contact with the upper surface of at least two of the first blocks, Facing sides of the first block and opposing sides of the plurality of second blocks are spaced apart from each other.

Wherein the first block is formed integrally with at least one of the neighboring second blocks,

A position facing the adjacent first block and a position facing the neighboring second block are spaced apart in a direction in which the blocks are arranged.

The upper surface of the first block contacts the lower surface of the second block which is adjacent to the first block and is not integrally formed with the first block.

6. A liquefied gas holding body having a flat joint according to any one of claims 1 to 5, comprising: a first barrier defining a space for accommodating a liquefied gas in the liquefied gas holding window; A second barrier formed outside the first barrier; A plurality of inner panels disposed between the first barrier and the second barrier; And a plurality of outer panels disposed outside the second barrier to surround the second barrier, and is inserted into a space formed between at least one of the inner panels and between the outer panels to seal the liquefied gas accommodation space .

Wherein the space is formed in a plurality of shapes extending in a first direction and a second direction intersecting with the first direction, the upper surface of the first block included in the flat joint inserted along the first direction, The lower surface of the second block included in the flat joint inserted along the first direction and the lower surface of the second block included in the flat joint inserted along the second direction intersect with each other, The upper surface of the first block included in the flat joint inserted along the direction intersects with the upper surface of the first block.

The details of other embodiments are included in the detailed description and drawings.

According to some embodiments of the present invention, the movement of vaporized gas can be blocked by inserting a flat joint between the panels installed in the liquefied gas hold.

Further, the flat joint can be formed by easily assembling a plurality of blocks.

FIG. 1 is a conceptual view showing a liquefied gas holding window provided with a flat joint according to an embodiment of the present invention.
2 is a cross-sectional view taken along line BB in Fig.
3 is a plan view of a flat joint according to an embodiment of the present invention.
4 is a cross-sectional view of a flat joint according to an embodiment of the present invention.
5 is an enlarged perspective view of a structure A in which flat joints are intersected with each other according to an embodiment of the present invention.
6 is a perspective view showing a polyhedron block of a flat joint according to another embodiment of the present invention.
7 is a perspective view of a flat joint according to another embodiment of the present invention.
8 is a perspective view showing a structure in which flat joints according to another embodiment of the present invention are intersected with each other.
9 is a view showing a process of assembling a flat joint according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense that is commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises " and / or " comprising " when used herein is intended to exclude the presence or addition of one or more other elements, steps and / Do not use it. And " and / or " include each and any combination of one or more of the mentioned items.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described in more detail with reference to the accompanying drawings, in which: Figure 1 is a cross-sectional view of a liquefied gas (e.g., liquefied natural gas Liquefied natural gas (LNG)) cargo holds. 2 is a cross-sectional view taken along line B-B in Fig.

1 and 2, a liquefied gas holding window having a flat joint 300 according to an embodiment of the present invention includes a first barrier 10 forming a space for accommodating liquefied gas in a liquefied gas holding window, A second barrier 20 formed on the outside of the first barrier 10, a plurality of inner panels 101 disposed between the first barrier 10 and the second barrier 20, And a plurality of outer panels 102 disposed outside the second barrier.

The flat joint 300 according to an embodiment of the present invention may be inserted into a space formed between at least one of the inner panels 101 and the outer panel 102 to seal the liquefied gas accommodation space.

 For example, the plurality of flat joints 300 may be installed in a space formed between the panels 101 and 102 in a direction parallel to one direction or in a direction different from the one direction. Thus, the flat joint 300 more tightly seals the spaces formed between the panels 101, Accordingly, the panels 101 and 102 are shielded between the liquefied gas holders so that the gas (for example, nitrogen gas) vaporized in the liquefied gas holders does not move outwardly (for example, Thereby blocking the movement of the gas. Meanwhile, nitrogen gas is exemplified as the vaporized gas, but it may include other liquefied gas (for example, LNG).

1, a plurality of flat joints 300 are arranged orthogonal to each other and arranged between the inner panels 101 in a lattice form. However, the present invention is not limited thereto and various arrangements can be made between the inner panels 101 . That is, the flat joint 300 is capable of various arrangements (for example, "B" shape) for sealing between the inner panels 101.

Meanwhile, the flat joint 300 according to an embodiment of the present invention is made of a material having high airtightness in order to prevent gas leakage. For example, a hybrid type polymer material composed of a metal and a composite material. In addition, the flat joint 300 can be composed of glass fiber, and resistance to gas flow (or molecular flow) can be enhanced. Further, it may be made of a polymer material having a low thermal stress such that no gap is formed between the panels 101 and 102 and the flat joint 300 due to heat shrinkage.

1, a plurality of inner panels 101 and flat joints 300 are illustrated as being formed between the first barrier 10 and the second barrier 20 so as to block gas from moving. However, the present invention is not limited thereto Do not. For example, the flat joint 300 can be inserted between the respective outer panels 102 to seal the liquefied gas receiving space. That is, as shown in FIG. 2, the plurality of panels 102 and the flat joints 300 are formed between the second barrier 20 and the hull 50 to further prevent gas from moving.

1 and 2, the widths of the plurality of flat joints 300 are shown to be constant, but are not limited thereto. That is, the plurality of flat joints 300 may have different widths from each other. 1 and 2, the plurality of panels 101 and 102 are shown as the same rectangular parallelepiped plate, but the present invention is not limited thereto. For example, the panels 101 and 102 can have various shapes such as a rectangular shape and a hexagonal shape.

3 is a plan view of a flat joint 300 according to an embodiment of the present invention. 4 is a cross-sectional view of a flat joint 300 according to an embodiment of the present invention. For convenience of explanation, differences from FIGS. 1 and 2 will mainly be described.

Referring to FIG. 3, the flat joint 300 may be inserted between the inner panels 101 in a first direction and in a second direction that intersects the first direction. For example, the flat joint 300 includes a flat joint 300a extending in a first direction X-X 'and a second direction Y-Y' orthogonal to the first direction X-X ' And a flat joint 300b extending from the flat joint 300b.

3, the flat joint 300a in the first direction X-X 'and the flat joint 300b in the second direction Y-Y' are orthogonal to each other. However, the present invention is not limited thereto. That is, the first direction X-X 'and the second direction Y-Y' in which the flat joint 300 extends can have an acute angle (for example, 60 degrees).

3 illustrates a plurality of inner panels 101 disposed between the first barrier 10 and the second barrier 20 and a flat joint 300 inserted between the inner panels 101. However, A plurality of outer panels 102 disposed outside of the second barrier 20 to surround the barrier 20 (e.g., between the second barrier 20 and the hull 50) may also have the same or similar construction and manner As shown in FIG.

Referring now to FIG. 4, a flat joint 300 according to an embodiment of the present invention may include a plurality of blocks inserted into a space formed between each of the panels 101 and 102, for example. One of the plurality of blocks may have a plurality of contact surfaces that are in contact with other neighboring blocks so that the gap between the plurality of blocks is sealed.

Further, the flat joint 300 may be arranged such that, for example, a plurality of blocks are arranged along the longitudinal direction of the space formed between the respective panels 101 and 102 and stacked in the height direction of the panels 101 and 102 have. For example, as shown in FIG. 4, the plurality of blocks include a first block 310, 311 arranged along the longitudinal direction of a space formed between the respective panels 101, 102, And a second block 320, 321 stacked on the first block 320 and arranged along the longitudinal direction of the space.

That is, as shown in FIG. 4, the flat joint 300 may include a first block 310, 311 and a second block 320, 321. In addition, the first blocks 310 and 311 may be arranged in one direction with their side surfaces in contact with each other. In addition, the second blocks 320 and 321 may be stacked on the first blocks 310 and 311 and may be arranged in one direction with their side surfaces in contact with each other.

In addition, the upper surface of the first block 310 may be in contact with the lower surface of the at least two second blocks 320, 321. The lower surface of the second block 321 may be in contact with the upper surface of the two or more first blocks 310 and 311. Accordingly, the opposing side surfaces of the first blocks 310 and 311 and the opposing side surfaces of the second blocks 320 and 321 may be spaced apart from each other. Thus, for example, even if the gas moves in the gap between the second blocks 320 and 321, it is blocked by the upper surface of the first block 310, so that the contact side between the first block 310 and 311, The movement of the gas can be more easily blocked than the structure of the flat joint 300 in which the contacted side surfaces of the second blocks 320 and 321 are connected in parallel.

On the other hand, as described above with reference to Figs. 1 and 2, the flat joint 300 may be made of, for example, glass fiber. Accordingly, the plurality of blocks 310, 311, 320, and 321 included in the flat joint 300 may also be formed of glass fibers. In this case, the outer surfaces of the blocks 310, 311, 320, and 321 may be surface-treated with a special paper member to install the blocks 310, 311, 320, and 321.

Although the cross-sectional structure of the flat joint 300 in the first direction X-X 'is shown as an example in FIG. 4, the flat joint 300 in the second direction Y-Y' Lt; / RTI > In FIG. 4, the flat joint 300 is shown as an assembly of blocks having a rectangular parallelepiped shape, but the present invention is not limited thereto and various shapes (for example, a hexagonal plate shape) are possible.

5 is an enlarged perspective view of a structure A in which flat joints 300 are intersected with each other according to an embodiment of the present invention. For convenience of explanation, the differences from Figs. 1 to 4 will be mainly described.

Referring to FIG. 5, a first block 310 including a flat joint 300 extending in a first direction includes a flat joint 300 extending in a second direction different from the first direction, It is possible to seal the space formed between the respective panels 101 and 102 by contacting and intersecting with the block 320. Alternatively, the second block 320, which is not shown in FIG. 5 but includes the flat joint 300 extending in the first direction, includes a flat joint 300 extending in a second direction different from the first direction It is possible to seal the space formed between the respective panels 101 and 102 by contacting and intersecting with the first block 310 including the first block 310.

For example, the flat joint 300 may extend in a first direction and in a second direction orthogonal to the first direction. The first block 313 including the flat joint 300 extending in the first direction and the second block 323 including the flat joint 300 extending in the second direction are perpendicular to each other The space formed between the panels 101 and 102 can be sealed by the contact. More specifically, as shown in FIG. 5, the upper surface 313a of the first block 310 including the flat joint 300 extending in the first direction, and the upper surface 313a of the flat joint 300 extending in the second direction The lower surfaces 323a of the second blocks 320 included in the first and second panels 300 and 300 contact and cross each other to seal the space formed between the panels 101 and 102, respectively.

5, the first block 313 is in contact with the second block 323 from the top to the top to seal the space formed between the panels 101 and 102, but the present invention is not limited thereto. For example, the first block 310, which includes the flat joint 300 extending in the first direction, includes a second block 310 including a flat joint 300 extending in a second direction different from the first direction 320, thereby sealing the space formed between the panels 101, 102.

6 is a perspective view showing a polyhedron block 330 of a flat joint 300 according to another embodiment of the present invention. 7 is a perspective view of a flat joint according to another embodiment of the present invention. For convenience of explanation, the differences from FIGS. 1 to 5 will be mainly described.

Referring to FIG. 6, a flat joint 300 according to another embodiment of the present invention includes a first block (see 310 in FIG. 4) and a second block (see 320 and 321 in FIG. 4) And may be integrally formed with at least one of them.

6, a flat joint 300 according to another embodiment of the present invention includes a lower block 331 having the same hexahedral shape and a polyhedral block 330 having an upper block 332 coupled thereto ). The upper block 332 is stacked on the lower block 331 to form a polyhedron block 330.

In addition, the lower block 331 and the upper block 332 of the polyhedron block 330 may be stacked in the vertical direction and staggered in the horizontal direction. That is, the top, bottom and side surfaces of the polyhedron block 330 may be coupled to form a step (see FIGS. 6 and 9).

The stepped surfaces on the coupling surface where the lower block 331 and the upper block 332 are in contact with each other may have a predetermined length L ₁ and a width L ₂ , respectively. Further, the width L ₂ may be equal to, for example, the width between the panels 101 and 102.

Referring to FIG. 7, the flat joint 300 according to another embodiment of the present invention includes a second block 332 and a second block 332 facing each other, The viewing position is formed to be spaced apart in the direction in which the polyhedral blocks 330 are arranged. That is, any one of the plurality of polyhedron blocks 330 may be arranged in one direction so as to be in side contact with the neighboring polyhedron blocks 330, thereby sealing the space formed between the respective panels 101 and 102.

In addition, for example, the width L ₂ of the polyhedron block 330 may be equal to the width of the space formed between the panels 101 and 102. Accordingly, the polyhedral blocks 330 may be arranged in a line in a space formed between the respective panels 101 and 102. As a result, the flat joint 300 composed of the polyhedron blocks 330 can seal the space formed between the respective panels 101 and 102.

6 and FIG. 7, the structure of the polyhedron block 330 coupled with the upper block 332 and the lower block 331 in a rectangular parallelepiped shape is shown, but the present invention is not limited thereto. For example, the polyhedron block 330 may have a shape in which a cubic upper block 332 and a lower block 331 are coupled to each other. In FIG. 7, the polyhedral blocks 330 are shown as being joined together in a row to form the flat joint 300, but the present invention is not limited thereto. For example, the flat joint 300 can be formed by combining a plurality of rows (for example, two columns) of polyhedron blocks 330.

8 is a perspective view showing a structure in which flat joints according to another embodiment of the present invention are intersected with each other. For convenience of explanation, differences from Figs. 1 to 7 will mainly be described.

Referring to FIG. 8, the flat joint 300 may extend in a first direction and a second direction intersecting the first direction, and may be inserted into a space formed between the respective panels 101 and 102.

For example, the flat joint 300 includes a lower surface of the upper block of the polyhedral blocks 332a and 332b extending in the first direction and a lower surface of the lower block of the polyhedral blocks 331a and 331b extending in the second direction So that the space formed between the panels 101 and 102 can be sealed. Therefore, it is possible to seal between the plurality of panels (101) in more various directions.

For example, the lower surface of the upper block of the polyhedral blocks 332a and 332b extending in the first direction and the upper surfaces of the lower blocks of the polyhedral blocks 331a and 331b extending in the second direction contact each other, So as to seal between the panels 101 and 102.

8, the polyhedron blocks 331a and 331b in the first direction may be coupled to each other in a mirror image. In addition, the polyhedron blocks 332a and 332b in the second direction other than the first direction may be stacked so as to be opposed to each other in an mirror image and to be brought into meshing contact with the polyhedral blocks 331a and 331b in the first direction . Therefore, for example, the width (see L _{2 in} FIG. 6) of the polyhedron blocks 331 and 332 may be twice as long as the length (see L _{1 in} FIG. 6).

8, the upper block of the polyhedral blocks 332a and 332b extending in the first direction and the polyhedron blocks 331a and 331b extending in the second direction are engaged with each other to be in contact with each other, But it is not limited thereto. For example, the polyhedron block 330 extending in the first direction may pass through the polyhedron block 330 extending in the second direction, thereby sealing between the panels 101 and 102.

9 is a view showing a process of assembling the flat joint 300 according to another embodiment of the present invention. For convenience of explanation, the differences from FIGS. 1 to 8 will be mainly described.

The flat joint 300 according to another embodiment of the present invention may be installed by connecting a plurality of the polyhedral blocks 330 to seal the panels 101 and 102 therebetween.

For example, the upper surface of the lower block 330b (331 of the lower block 330b) is located at the lower portion of the upper block 330a (not shown) that is not integrally formed with the lower block 330b adjacent to the lower block 330b Surface.

The lower surface of one of the upper blocks 332 of the polyhedron block 330a and the upper surface of the lower block 331 of another polyhedron block 330b may be assembled to be in contact with each other. Accordingly, the polyhedron block 330 may be installed such that the side surfaces of the polyhedron block 330 are continuously arranged in one direction. As a result, the flat joint 300 can be formed by inserting the polyhedron block 330 between the panels 101 and 102 more easily.

9, the stepped sides of the polyhedron block 330 are continuous in the direction of the length L ₁ , and the respective side faces are formed to be perpendicular to the direction of the length L _1. However, the present invention is not limited thereto. For example, the stepped side faces of the polyhedron block 330 are continuous in the direction of the length L ₁ , and the respective side faces are formed to be inclined at an acute angle (for example, 45 degrees) from the direction of the length L ₁ And may be formed parallel to each other.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

10: first barrier 20: second barrier
50: Hull 101, 102: Panel
300, 300a, 300b: flat joints 310, 311, 313: first block
320, 321, 323: second block 313a: upper surface of the first block
323b: lower surface of the second block 330, 330a, 330b: polyhedral block
331, 331a, 331b: lower block 332, 332a, 332b: upper block
L ₁ : length L ₂ : width
X-X ': first direction Y-Y': second direction

Claims (7)

A flat joint inserted into a space formed between panels for sealing a liquefied gas holding window,
A plurality of blocks inserted in the space,
Wherein the plurality of blocks are arranged along a longitudinal direction of the space and are laminated in a height direction of the panel. The method according to claim 1,
The block includes: a first block arranged along a longitudinal direction of the space; And
And a second block stacked on the first block and arranged along the longitudinal direction of the space. 3. The method of claim 2,
Wherein the upper surface of the plurality of first blocks is in contact with the lower surface of the at least two second blocks or the lower surface of the plurality of second blocks is in contact with the upper surface of at least two of the first blocks, Wherein a facing side of the first block and a facing side of the plurality of second blocks are spaced apart from each other. 3. The method of claim 2,
Wherein the first block is formed integrally with at least one of the neighboring second blocks,
Wherein a position facing the adjacent first block and a position facing the neighboring second block are spaced apart in a direction in which the blocks are arranged. 5. The method of claim 4,
Wherein the upper surface of the first block
And a lower surface of the second block adjacent to the first block and not formed integrally with the first block. A liquefied gas holding window having a flat joint according to any one of claims 1 to 5,
A first barrier wall defining a space for accommodating the liquefied gas in the liquefied gas storage chamber;
A second barrier formed outside the first barrier;
A plurality of inner panels disposed between the first barrier and the second barrier; And
And a plurality of outer panels disposed outside the second barrier to surround the second barrier,
The flat joint
Wherein the liquefied gas storage space is enclosed in a space formed between at least one of the inner panels and the outer panel. The method according to claim 6,
Wherein the space extends in a first direction and in a second direction intersecting with the first direction,
The upper surface of the first block included in the flat joint inserted along the first direction is in contact with the lower surface of the second block included in the flat joint inserted along the second direction,
Wherein the flat surface of the flat block is inserted along the first direction and the upper surface of the first block included in the flat joint inserted along the second direction is in contact with the lower surface of the second block included in the flat joint, Cargo hold.

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