WO2024210614A1

WO2024210614A1 - Anti-floating device

Info

Publication number: WO2024210614A1
Application number: PCT/KR2024/004514
Authority: WO
Inventors: 임홍일; 이태형; 한동화; 장영재; 김연태
Original assignee: 에이치디현대중공업 주식회사; 에이치디현대삼호 주식회사
Priority date: 2023-04-06
Filing date: 2024-04-05
Publication date: 2024-10-10

Abstract

An anti-floating device according to an embodiment comprises: a first connection part which is coupled to the hull of a ship; a second connection part which is coupled to a tank; and a floating capture which connects a first support and a second support to each other, wherein the floating capture has a belt structure.

Description

Anti-Floating Device

It relates to an anti-floating device that prevents a tank placed on a ship from floating.

Ships are used to transport gas. The gas being transported may be liquefied gas. The gas is filled into tanks, and the tanks are housed inside the ship's hull. During the transport process, there are cases where the ship sinks due to an unexpected accident.

When a ship sinks, the gravity acting on the ship is greater than the buoyancy acting on the ship, so the combined force of gravity and buoyancy acting on the ship is directed downwards to the water surface. However, the density of the tank accommodated inside the ship's hull is less than the density of water, so the combined force of gravity and buoyancy acting on the tank in the sinking situation of the ship is directed upwards to the water surface. Therefore, when the ship sinks, the tank floats up, and the inner surface of the tank and the hull may collide, causing the hull and the tank to be damaged.

In order to prevent damage to the hull and tank, anti-floating chocks were installed on the outside of the tank and inside the hull in the past. However, anti-floating chocks must be installed on both the inside of the hull that can come into contact with the tank. In addition, anti-floating chocks must also be installed on the tank that can come into contact with the inside of the hull. There is a problem that a large amount of materials are required for the installation of anti-floating chocks and a lot of man-hours are invested due to the complex installation.

In addition, in the past, reinforcement was constructed on the inner surface of the hull to construct the anti-floating chock. The reinforcement is constructed in the same position as the anti-floating chock to secure structural safety for the hull and the tank itself when in contact with the anti-floating chock, and is designed so that the construction direction is directed toward the inside of the hull, that is, placed on a surface facing the inside of the hull so as to have sufficient strength in preparation for contact with the anti-floating chock. In this way, if the reinforcement is arranged toward the inside of the hull where the tank is accommodated, there is a problem that the size of the space where the tank can be placed and the capacity of the tank are reduced by the space occupied by the reinforcement.

An embodiment of the present invention is to provide a floating prevention device that stably supports a tank while having a simple structure to solve such a problem.

An anti-floating device according to one embodiment of the present invention comprises: a first connecting portion coupled to a hull; a second connecting portion coupled to a tank; and a floating capture connecting the first connecting portion and the second connecting portion; wherein the floating capture has a belt structure.

A first pin disposed in the first connecting portion; wherein the floating capture is disposed such that at least a portion of an inner surface thereof is spaced apart from at least a portion of an outer surface thereof of the first pin in the longitudinal direction of the floating capture.

A second pin is disposed on the second connecting portion; and the floating capture is disposed to surround the first pin and the second pin.

The above floating captures are arranged in multiples, and the plurality of floating captures are arranged spaced apart from each other along the length direction of the first connecting portion.

The material of the above floating capture is elastic or steel.

It includes a cap that is fitted and connected to one end of the above floating capture.

A first pin arranged in the first connecting portion; a second pin arranged in the second connecting portion; and the floating capture is arranged to surround the first pin and the second pin, and one end of the second pin is fitted into the cap.

According to the present invention, when a ship sinks, the tank can be prevented from floating inside the hull. Furthermore, when a ship sinks, the tank and the hull can be prevented from colliding and being damaged.

In addition, the pipe support structure can be optimized by horizontalizing the upper part of the deck of the hull through the arrangement of reinforcing members, and the space for arranging the tank inside the hull can be secured significantly, thereby increasing the capacity of the tank.

In addition, the use of a cap can facilitate the construction of an anti-floating device and improve the insulation performance of the tank.

FIG. 1 is a cross-sectional drawing of a hull of a ship and a tank arranged inside the hull according to one embodiment of the present invention.

Figure 2 is an enlarged drawing of a portion of the vessel and floating anchorage device shown in Figure 1.

Figure 3 is a drawing showing the A-A' cross section of Figure 2.

FIG. 4 is a diagram illustrating a floating capture according to one embodiment of the present invention.

FIG. 5 is a drawing illustrating the upper part of a ship's hull according to one embodiment of the present invention.

Figure 6 is a drawing showing a cross-section of a ship's hull and a tank arranged inside the hull according to the prior art.

FIG. 7 is a drawing comparing a tank of a ship according to the prior art and a tank of a ship according to one embodiment of the present invention.

Figures 8 and 9 are drawings showing the combined structure of the floating prevention device and the cap.

Figure 10 is a perspective view of a cap according to the present invention.

Figure 11 is a plan view of a cap according to the present invention.

Figure 12 is a flow chart illustrating a method for installing insulation on a tank of a ship according to the present invention.

Before going into the detailed description of the present invention, it should be noted that the terms or words used in this specification and claims should not be interpreted as being limited to their usual or dictionary meanings, and should be interpreted as meanings and concepts that conform to the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to describe his own invention in the best way. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

In the following description, singular expressions include plural expressions unless the context clearly indicates otherwise. It should be understood that terms such as "comprises" or "comprises" are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

In addition, in the description below, the expressions such as top, upper, lower, lower, side, front, and rear are expressed based on the direction shown in the drawing, and it is stated in advance that they may be expressed differently if the direction of the object in question changes.

In addition, terms including ordinal numbers such as "first", "second", etc. may be used in this specification and claims to distinguish between components. These ordinals are used to distinguish between identical or similar components, and the meaning of the terms should not be interpreted in a limited manner due to the use of these ordinals. For example, the order of use or arrangement of components associated with these ordinals should not be interpreted in a limited manner by their numbers. If necessary, each ordinal number may be used interchangeably.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. However, the spirit of the present invention is not limited to the presented embodiments. For example, a person skilled in the art who understands the spirit of the present invention may suggest other embodiments included within the scope of the spirit of the present invention through addition, change, or deletion of components, but this will also be considered to be included within the scope of the spirit of the present invention. The shapes and sizes of elements in the drawings may be exaggerated for a clearer explanation.

Referring to FIG. 1, a vessel (100) according to one embodiment of the present invention may include a hull (110), a tank (120), a reinforcing member (130), and an anti-floating device (140).

The hull (110) forms at least a part of the exterior of the ship (100) and may be provided to accommodate a tank (120) therein. For example, an accommodation space (115) in which a tank (120) may be placed may be provided inside the hull (110). An anti-floating device (140) may be provided between the hull (110) and the tank (120).

The accommodation space (115) of the hull (110) may be provided as a space surrounded by the upper plate (111), the lower plate (112), and the side plates (113, 114) of the hull (110). The upper plate (111) and the lower plate (112) may be arranged to face each other while being spaced apart from each other, and the two side plates (113, 114) may connect each end of the upper plate (111) and the lower plate (112), respectively. For example, the inner surfaces (e.g., surfaces facing the inside of the hull (110)) of the upper plate (111), the lower plate (112), and the side plates (113, 114) may form the upper surface, the lower surface, and the side surface of the accommodation space (115), respectively. The upper plate (111) of the hull (110) and the tank (120) may be arranged to be spaced apart from each other at a specified interval without a separate structure connecting them.

The upper plate (111) of the hull (110) can be inclined at a predetermined incline. The upper plate (111) can be inclined to form a predetermined angle with respect to a virtual extension line extending in a direction parallel to the lower plate (112). For example, the upper plate (111) can be formed such that the left and right portions are each inclined downward with respect to a center line (C) extending in a height direction (H) while passing through the center of the width direction (W) of the hull (110). Here, the virtual extension line can be parallel to the width direction (W) of the hull (110) and perpendicular to the center line (C). Specifically, the left portion of the upper plate (111) relative to the center line (C) of the hull (110) may be connected to the first side plate (113) while being inclined at a predetermined angle toward the lower plate (112), and the right portion of the upper plate (111) may be connected to the second side plate (114) while being inclined at a predetermined angle toward the lower plate (112).

The height direction (H) of the hull (110) may mean the up-down direction of the hull (110), that is, the two directions in which the upper plate (111) and the lower plate (112) face, and the width direction (W) of the hull (110) may mean the left-right direction, that is, the direction in which the two side plates (113, 114) face. The length direction of the hull (110) may mean the front-back direction of the hull (110), and the direction opposite to the direction in which the ship (100) moves when the ship (100) is operating. For example, FIG. 1 illustrates a cross-section of the ship (100) cut in the width direction (W).

The hull (110) may be symmetrical about the center line (C), but is not limited thereto. A reinforcing member (130) may be arranged on the top plate (111) of the hull (110). For example, the reinforcing member (130) may be arranged on a surface of the top plate (111) of the hull (110) that faces the outside of the hull (110).

The tank (120) may be placed in the receiving space (115) of the hull (110). A storage space in which cargo is stored or received may be provided inside the tank (120). The tank (120) may be provided to receive liquefied gas. For example, the material loaded or stored in the tank (120) may be LNG or LPG. However, the material stored in the tank (120) is not limited to liquefied gas, and various materials may be stored. The storage space of the tank (120) may be provided as a plurality of spaces separated from each other, but is not limited thereto.

The tank (120) may be placed in the receiving space (115) of the hull (110), but may be spaced apart from the inner surface of the receiving space (115). For example, the outer surface of the tank (120) may be spaced apart from the inner surface of the receiving space (115) by a predetermined distance. The tank (120) may include an upper surface (121), side surfaces (123, 124), and a lower surface (122) forming the outer appearance of the tank (120). The upper surface (121) of the tank (120) can face the upper plate (111) of the hull (110) while being spaced apart from it, the lower surface (122) of the tank (120) can face the lower plate (112) of the hull (110) while being spaced apart from it, and the two side surfaces (123, 124) of the tank (120) can face the two side plates (113, 114) of the hull (110) while being spaced apart from it, respectively.

The reinforcing member (130) may be placed on the top plate (111) of the hull (110) so as to be located outside the hull (110). For example, the reinforcing member (130) may be placed on the upper part or the upper surface of the top plate (111). The reinforcing member (130) may be referred to as a structure for preventing bending or buckling of the top plate (111) by being fixed to the top plate (111). For example, the reinforcing member (130) may be installed on the upper part of the top plate (111) through various joining methods or fixing methods.

The reinforcing member (130) may be provided such that the upper edge portion (133) is horizontal. The upper edge portion (133) of the reinforcing member (130) may be perpendicular to the center line (C) of the hull (110). In addition, the upper edge portion (133) of the reinforcing member (130) may extend parallel to the width direction (W) and/or the length direction. For example, the upper edge portion (133) of the reinforcing member (130) may form a predetermined angle with the upper plate (111) of the hull (110) that is inclined at a predetermined incline, and at the same time, may be parallel to the lower plate (112) of the hull (110). Specifically, the reinforcing member (130) may be provided such that the upper edge portion (133) is parallel to an imaginary extension line that extends in a direction parallel to the lower plate (112). That is, the top plate (111) is formed to be inclined so as to form a predetermined angle with the virtual extension line, and the reinforcing member (130) is formed so that the upper edge portion (133) is parallel to the virtual extension line.

The reinforcing member (130) may be provided in a shape in which the height gradually increases and/or decreases. The reinforcing member (130) may be formed in a shape in which the height varies along the width direction (W) with respect to the centerline (C) of the hull (110). For example, when looking at the cross section of FIG. 1, the reinforcing member (130) may be provided in a shape in which the height of a portion located on the left side with respect to the centerline (C) gradually increases as it goes toward the first side plate (113), and the height of a portion located on the right side gradually increases as it goes toward the second side plate (114). The detailed structure and arrangement structure of the reinforcing member (130) will be described later with reference to FIG. 5.

The anti-floating device (140) can connect a part of the hull (110) and a part of the tank (120). The anti-floating device (140) can be arranged between the lower surface (122) of the tank (120) and the lower plate (112) of the hull (110) to connect the lower surface (122) and the lower plate (112). The anti-floating device (140) can be provided in multiple numbers. For example, a plurality of anti-floating devices (140) can be arranged spaced apart from each other to connect the hull (110) and the tank (120).

The anti-floating device (140) connects the tank (120) to the hull (110) with a predetermined strength, thereby limiting the floating and movement of the tank (120) when buoyancy is applied to the tank (120) due to a situation in which the vessel in which the tank (120) is installed sinks, thereby preventing the tank (120) from colliding with the hull (110). The detailed structure and connection structure of the anti-floating device (140) are described in detail below with reference to FIG. 2.

According to one embodiment of the present invention, a vessel (100) has an anti-floating device (140) applied between the lower surface (122) of the tank (120) and the hull (110) to connect and support the tank (120) and the hull (110), so that a separate connecting structure, fixed structure, or supporting structure is unnecessary between the hull (110) and an outer surface other than the lower surface (122) of the tank (120). In particular, floating of the tank (120) can be prevented even without a separate device (e.g., anti-floating chock) provided between the upper plate (111) of the hull (110) and the upper surface (121) of the tank (120) to separate them by a predetermined distance.

In addition, since the vessel (100) according to one embodiment of the present invention can omit a connecting structure, a fixed structure, or a supporting structure between the upper surface (121) of the tank (120) and the upper plate (111) of the hull (110), a reinforcing material for installing these structures also does not need to be provided between the upper plate (111) and the tank (120), and thus the reinforcing member (130) can be installed outside the hull (110), particularly, on the upper part of the upper plate (111) (e.g., on the upper part of the hull deck), rather than inside the receiving space (115).

In addition, the vessel (100) according to one embodiment of the present invention can secure a relatively wide accommodation space (115) by having the reinforcing member (130) not be placed on the side of the accommodation space (115) of the hull (110) but on the outside of the top plate (111) of the hull (110), and accordingly, the capacity of the tank (120) can be increased.

Fig. 2 is a drawing showing an enlarged view of the left side of the ship (100) based on the center line (C) in the cross-sectional view shown in Fig. 1, and showing the detailed configuration of the floating prevention device (140). Fig. 3 is a drawing showing the A-A' cross-section of Fig. 2.

Referring to FIGS. 2 and 3, the anti-floating device (140) can connect the lower surface (122) of the tank (120) to the hull (110). Accordingly, the anti-floating device (140) can perform the function of supporting the load (e.g., vertical load) of the tank (120) and at the same time, can perform the function of preventing the tank (120) from rising due to buoyancy in a specific situation (e.g., sinking of the ship).

The floating prevention device (140) may include a first connecting portion (141), a first pin (142), a first reinforcing portion (143), a second connecting portion (144), a second pin (145), a second reinforcing portion (146), and a floating capture (147).

The first connecting portion (141) may be arranged on the lower plate (112) of the hull (110). The first connecting portion (141) may be connected to the second connecting portion (144) arranged on the tank (120). For example, the first connecting portion (141) may be connected to the second connecting portion (144) via a floating capture (147). The first connecting portion (141) may be joined to a surface of the lower plate (112) of the hull (110) that faces the tank (120). The first connecting portion (141) may protrude from the lower plate (112) of the hull (110) toward the tank (120). The first connecting portion (141) may have a longitudinal direction parallel to the lower plate (112) of the hull (110). A tank (120) may be placed on the upper portion of the first connecting portion (141), and the first connecting portion (141) may support the load of the tank (120). A first pin (142) may be inserted into the first connecting portion (141). For example, a hole (not shown) may be formed in the first connecting portion (141) for inserting the first pin (142). A floating capture (147) may be connected to the first pin (142).

The first reinforcing member (143) may be a flat plate having a hole in the center. The first reinforcing member (143) may be a flat plate having a constant thickness. The first reinforcing member (143) may be in contact with the first connecting member (141). The hole of the first reinforcing member (143) may be aligned with the hole of the first connecting member (141). The first pin (142) may be inserted into the hole of the first reinforcing member (143) and the hole of the first connecting member (141). The first reinforcing member (143) may be arranged between the first connecting member (141) and the first pin (142) to reduce a bending moment acting therebetween. In addition, the first reinforcing member (143) may be arranged between the first connecting member (141) and the floating capture (147).

The second connecting portion (144) may be arranged on the lower surface (122) of the tank (120). The second connecting portion (144) may be connected to the first connecting portion (141) arranged on the hull (110). For example, the second connecting portion (144) may be connected to the first connecting portion (141) via a floating capture (147). The second connecting portion (144) may be coupled to the lower surface (122) of the tank (120) facing the hull (110). The second connecting portion (144) may protrude from the lower surface (122) of the tank (120) toward the lower plate (112) of the hull (110). The second connecting portion (144) may be symmetrical with the first connecting portion (141). The tank (120) may be arranged on the upper surface of the second connecting portion (144). The second connecting portion (144) can be in contact with the first connecting portion (141) and can support the load of the tank (120) together with the first connecting portion (141). A second pin (145) can be inserted into the second connecting portion (144). For example, a hole (not shown) for inserting the second pin (145) can be formed in the second connecting portion (144). A floating capture (147) can be connected to the second pin (145).

The second reinforcing member (146) may be a flat plate having a hole in the center. The second reinforcing member (146) may be a flat plate having a constant thickness. The second reinforcing member (146) may be in contact with the second connecting member (144). The hole of the second reinforcing member (146) may be aligned with the hole of the second connecting member (144). The second pin (145) may be inserted into the hole of the second reinforcing member (146) and the hole of the second connecting member (144). The second reinforcing member (146) may be arranged between the second connecting member (144) and the second pin (145) to reduce a bending moment acting therebetween. In addition, the second reinforcing member (146) may be arranged between the second connecting member (144) and the floating capture (147).

The floating capture (147) can connect the first connection portion (141) and the second connection portion (144). For example, the floating capture (147) can connect the first connection portion (141) and the first connection portion (141) by being connected to the first pin (142) inserted into the first connection portion (141) and the second pin (145) inserted into the second connection portion (144). The floating capture (147) can be a belt. For example, the floating capture (147) can be connected to the first pin (142) and the second pin (145) by surrounding the first pin (142) and the second pin (145). Specifically, a part of the floating capture (147) may contact the first pin (142), and another part facing the part contacting the first pin (142) may contact the second pin (145).

The floating capture (147) can limit the movement and/or separation between the first connection portion (141) and the second connection portion (144) within a predetermined range by connecting the first pin (142) (i.e., the first connection portion (141)) and the second pin (145) (i.e., the second connection portion (144)). That is, by preventing the second connection portion (144) from being separated from the first connection portion (141) by a predetermined distance or more by the floating capture (147), the tank (120) can be prevented from floating from the lower plate (112) of the hull (110) and colliding with the inner surface of the receiving space (115).

The floating capture (147) may be provided in multiple units. For example, the first connection portion (141) and the second connection portion (144) may be connected through multiple floating captures (147). According to the embodiment illustrated in FIG. 2, the first connection portion (141) and the second connection portion (144) may be connected through four floating captures (147) spaced apart from each other. When the floating capture (147) is provided in multiple units, the first pin (142) and the second pin (145) may be provided in multiple units accordingly, and the first connection portion (141) and the second connection portion (144) may be provided with multiple holes into which the multiple first pins (142) and the multiple second pins (145) are inserted.

FIG. 4 is a perspective view of a floating capture according to an embodiment of the present invention.

The floating capture (147) may be a belt. The floating capture (147) may include a hole (361). The floating capture (147) may include a first inner surface (362), a second inner surface (363), a third inner surface (364), and a fourth inner surface (365).

The second inner surface (363) may face the first inner surface (362). The third inner surface (364) may be a surface connecting the first inner surface (362) and the second inner surface (363). The fourth inner surface (365) may be a surface connecting the first inner surface (362) and the second inner surface (363) and facing the third inner surface (364). The third inner surface (364) may include a curved surface. The third inner surface (364) may contact the first pin (142). The curvature of the third inner surface (364) may correspond to the curvature of the body (311) of the first pin (142). The fourth inner surface (365) may include a curved surface. The fourth inner surface (365) may contact the second pin (145). The curvature of the fourth inner surface (365) may correspond to the curvature of the body (341) of the second pin (145).

The material of the floating capture (147) may be a composite material having strong tensile strength. For example, the floating capture (147) may be a CFRP (carbon fiber reinforced plastics) material. However, it is not limited to CFRP, and any material having a tensile strength that can prevent the tank (120) from rising when the ship sinks is sufficient. The floating capture (147) may have elasticity. The material of the floating capture (147) may be steel. In this case, the floating capture (147) may have a tensile strength that can prevent the tank (120) from rising when the ship sinks.

For example, FIG. 3 may be a perspective view of the top plate (111) of the hull (110) of the ship (100) illustrated in FIG. 1 as viewed from above.

Referring to FIG. 5, a vessel (100) according to one embodiment of the present invention may be provided with a reinforcing member (130) arranged on a top plate (111) of a hull (110).

The reinforcing member (130) may be placed on the upper portion (e.g., the upper surface or the outer surface) of the top plate (111) so as to be located outside the hull (110). Here, the top plate (111) may be referred to as a deck or upper deck of the hull (110).

The reinforcing member (130) may include a first reinforcing member (131) extending in the width direction (W) on the top plate (111) of the hull (110) and a second reinforcing member (132) extending in the length direction (L) so as to be perpendicular to the first reinforcing member (131) and connected to the first reinforcing member (131). For example, the first reinforcing member (131) may be referred to as a main reinforcing member, and the second reinforcing member (132) may be referred to as a sub reinforcing member. Since FIGS. 1 and 2 illustrate cross sections in the width direction (W), the reinforcing member (130) of FIGS. 1 and 2 may be referred to as the first reinforcing member (131).

The first reinforcing member (131) may have a shape having different heights along the width direction (W). The first reinforcing member (131) may be installed on a top plate (111) that is inclined at a predetermined incline. The first reinforcing member (131) may include a first upper edge portion (133) that extends horizontally. The first upper edge portion (133) of the first reinforcing member (131) may be parallel to the width direction (W) of the hull (110). For example, since the first reinforcing member (131) is provided in a shape having different heights in the width direction (W) on the inclined top plate (111), the horizontal arrangement of the first upper edge portion (133) may be implemented.

The first reinforcing member (131) may be provided in multiple pieces. For example, the plurality of first reinforcing members (131) may be arranged at a specified interval in the longitudinal direction (L). The plurality of first reinforcing members (131) may be formed in a shape in which the first upper edge portion (133) can be horizontal in response to the inclination of the upper plate (111) on which each is arranged.

The second reinforcing member (132) can at least partially penetrate the first reinforcing member (131) and be connected and fixed to the first reinforcing member (131). The second reinforcing member (132) can extend in the longitudinal direction (L) to penetrate each of the plurality of first reinforcing members (131). The second reinforcing member (132) can include a second upper edge portion (134) connected to the first upper edge portion (133). The second upper edge portion (134) can also be arranged horizontally like the first upper edge portion (133). The second upper edge portion (134) of the second reinforcing member (132) can be parallel to the longitudinal direction (L) of the hull (110).

The first reinforcing member (131) and the second reinforcing member (132) are arranged on the upper plate (111) of the hull (110), and thus can support at least a portion of a plurality of pipes (not shown) installed on the upper plate (111). Accordingly, the length and size of the structure supporting the plurality of pipes on the upper plate (111) can be reduced, thereby reducing the weight. In addition, since the upper edge portions (133, 134) of each of the first reinforcing member (131) and the second reinforcing member (132) are horizontalized, a plurality of pipes can be installed and supported in the horizontal portion. Accordingly, a support structure in which the installation of the plurality of pipes is easy and stable can be implemented.

FIG. 6 is a cross-sectional view of a hull of a ship according to the prior art and a tank arranged inside the hull. FIG. 7 is a view comparing a tank of a ship according to the prior art and a tank of a ship according to one embodiment of the present invention.

FIGS. 6 and 7 are drawings for comparing a vessel (100) according to one embodiment of the present invention with a vessel (10) according to the prior art. Specifically, they may be drawings for explaining that, unlike the vessel (10) according to the prior art, the effect of increasing the capacity of the tank (13, 120) can be provided by a structure that has been changed.

Referring to FIG. 6, a ship (10) according to the prior art may include a hull (11), a tank (13), a reinforcing member (14), and an anti-floating chock (15).

Compared with a vessel (10) according to one embodiment of the present invention, a vessel (10) according to the prior art is provided with an anti-floating chock (15) between the upper surface of a tank (13) and a hull (11), and a reinforcing member (14) is arranged on the upper plate (12) of the hull (11) to prevent contact with the anti-floating chock (15) according to the installation of the anti-floating chock (15). At this time, the reinforcing member (14) must be arranged at a position facing the anti-floating chock (15), so it is arranged inside the hull (11), that is, on the side of the space where the tank (13) is accommodated. Specifically, the reinforcing member (14) is installed on a surface of the upper plate (12) of the hull (11) facing the inside of the hull (11) or a surface facing the tank (13), and the anti-floating chock (15) is arranged between the reinforcing member (14) and the tank (13).

In a ship (10) according to the prior art, since the reinforcing member (14) is arranged inside the hull (11), the size of the space in which the tank (13) can be arranged is reduced by the space occupied by the reinforcing member (14), and the tank (13) is formed to a size corresponding to the accommodation space. That is, in the past, since the reinforcing member (14) is installed on the inner surface of the top plate (12) corresponding to the installation position of the anti-floating chock (15), the capacity of the tank (13) is limited.

In contrast, since the vessel (100) according to one embodiment of the present invention supports and prevents floating of the tank (120) through the anti-floating device (140) disposed between the sea surface of the tank (120) and the hull (110) as described above, the size of the space in which the tank (120) can be disposed can be increased by arranging the reinforcing member (130) on the upper part of the deck (i.e., the top plate (111)) of the hull (110).

According to one embodiment of the present invention, since the space occupied by the reinforcing member (14) in the conventional technology can be utilized as a space for arranging the tank (13, 120), the capacity and volume of the tank (13, 120) can be expanded as illustrated in FIG. 5. That is, the ship (100) of the present invention can load a tank (120) having a larger capacity and volume than the tank (13) of the conventional ship (10) depending on the arrangement of the reinforcing member (130) on the upper deck. For example, the tank (120) equipped in the ship (100) of the present invention can be expanded in volume by about 6 to 7% compared to the tank (13) equipped in the conventional ship (10), but the above figures are exemplary and are not limited thereto.

FIG. 8 and FIG. 9 are drawings showing the combined structure of a floating prevention device and a cap, FIG. 10 is a perspective view of a cap according to the present invention, and FIG. 11 is a plan view of a cap according to the present invention.

The cap (400) may include a body portion (410) and a grip portion (420).

The body part (410) and the grip part (420) can be combined. The body part (410) and the grip part (420) can be formed integrally. One side of the body part (410) and one side of the grip part (420) can be combined by contacting each other.

The body part (410) and the grip part (420) may have a cylindrical shape. The body part (410) and the grip part (420) may have a shape similar to a circular plate having a thickness of approximately 100 mm. The body part (410) may include a groove part (415).

The radius of the grip portion (420) may be larger than the radius of the body portion (410). Accordingly, the outer surface of the grip portion (420) and the outer surface of the body portion (410) may form a step.

The body part (410) may include a groove part (415). The groove part (415) may be arranged on one side of the body part (410). The side of the body part (410) on which the groove part (415) is arranged may be a side that is opposite to the side of the body part (410) on which the grip part (420) is arranged.

The home portion (415) may be formed by being sunken in one surface of the body portion (410) in the axial direction of the body portion (410). A first pin (142) or a second pin (145) and a floating capture (147) may be fitted and connected to the home portion (415).

A cap (400) can be used to couple the floating capture (147) to the first pin (142) and the second pin (145). The operator can couple the floating capture (147) that is fitted with the cap (400) to the first pin (142) and the second pin (145).

A cap (400) may be coupled to one side of the floating capture (147). When the worker couples the floating capture (147) with the first pin (142) or the second pin (145), the worker may hold the grip portion (420) of the cap (400) and couple the floating capture (147) to the first pin (142) or the second pin (145). Therefore, the worker can easily perform the task of coupling the floating capture (147) to the first pin (142) or the second pin (145) using the cap (400).

In addition, the floating capture (147) and the first pin (142) may be arranged to be spaced apart from each other by a predetermined range. At least a portion of the inner surface of the floating capture (147) and at least a portion of the outer surface of the first pin (142) may be arranged to be spaced apart from each other. At least a portion of the inner surface of the floating capture (147) and at least a portion of the outer surface of the first pin (142) may be arranged to be spaced apart from each other in the longitudinal direction of the floating capture (147).

In other words, when the floating capture (147) is coupled to the first pin (142) and the second pin (145), the maximum distance between the outer surface of the first pin (142) and the outer surface of the second pin (145) is referred to as the first separation distance, and the maximum width of the inner surface of the floating capture (147) is referred to as the second separation distance, the second separation distance is greater than the first separation distance.

That is, the floating capture is arranged to surround the first and second fins that are spaced apart from each other, and a gap (150) can be arranged between a part of the outer surface of the first fin (142) and a part of the inner surface of the floating capture (147), so that the worker can easily couple the floating capture (147) to the first fin (142) and the second fin (145). In addition, during the process of arranging the tank (120) inside the hull (110), a change in the arrangement position of the tank (120) may occur. That is, the alignment of the first pin (142) and the second pin (145) may be misaligned due to a change in the arrangement position of the tank (120), but since there is a gap (150) between the first pin (142) and the floating capture (147), even if the alignment of the first pin (142) and the second pin (145) is misaligned, there is an effect of facilitating the installation or removal of the floating capture (147).

Hereinafter, a method for insulating a tank will be described with reference to Fig. 12. Fig. 12 is a flowchart for explaining a method for insulating a tank.

As described above, the tank (120) is filled with liquefied gas. Since the gas filled in the tank (120) is a gas in a gaseous state at room temperature, the liquefied gas in the tank (120) has a temperature lower than that of the room temperature. Therefore, when the surface of the tank (120) is exposed to the outside, condensation and freezing may occur on the surface of the tank (120) due to the temperature difference between the outside of the tank (120) and the inside of the tank (120). Therefore, it is preferable to apply an insulating material to the surface of the tank (120).

It is preferable that the insulation be applied before placing the tank (120) inside the hull of the ship, to facilitate ease of work and to minimize areas where insulation is not applied.

As described above, a connecting part (141, 144) is arranged at the bottom of the tank (120). A pin (142, 145) is inserted into the connecting part (141, 144), and the floating capture (147) described above can be coupled to the pin (142, 145).

Before applying the insulation, pins (142, 145) are attached to the connecting portions (141, 144). Here, the connecting portions (141, 144) may refer to the first connecting portion (141, 144) and the second connecting portion (141, 144) described above, and the pins (142, 145) may refer to the first pin (142) and the second pin (145) described above.

The pins (142, 145) have one end and the other end exposed to the outside. That is, one end and the other end of the pins (142, 145) are arranged to protrude outside of the connecting portion (141, 144).

The worker installs a masking member on one end and the other end of the pin (142, 145). The masking member may be any member that covers one end and the other end of the pin (142, 145), and is not limited to a specific material. However, it is preferable that the masking member be a member that can be easily removed from the pin (142, 145).

It is preferable that the masking member be constructed so as to wrap around one end and the other end of the pin (142, 145) along the outer surface of the pin (142, 145). That is, it is preferable that the masking member be constructed so as to wrap around one end and the other end of the pin (142, 145) in a circular shape when viewed in the axial direction of the pin (142, 145). More specifically, it is preferable that the masking member be constructed so as to have a shape and size that are approximately similar to the cap (400) when viewed in the axial direction of the pin (142, 145).

When the masking member is installed on the fins (142, 145), insulation is applied to the surface of the tank (120). Here, it is preferable that the insulation is a material having low thermal conductivity. For example, urethane foam may be used as the insulation. It is preferable that the insulation is applied along the surface of the tank (120). If the insulation is not applied to a part of the surface of the tank (120), condensation and freezing may occur on the surface of the tank (120) where the insulation is not applied. Therefore, unless other devices, etc. are attached to the surface of the tank (120), it is preferable to apply the insulation to the entire surface of the tank (120) if possible.

The insulation is applied to all surfaces of the tank (120). Accordingly, it can also be applied to the connecting portions (141, 144) and the surroundings of the connecting portions (141, 144) arranged at the bottom of the tank (120). At this time, the insulation can also be applied to the masking members constructed at one end and the other end of the pins (142, 145).

When the application of the insulation material is completed, the masking member constructed on one end and the other end of the fin (142, 145) can be removed. When viewed in the axial direction of the fin (142, 145), the masking member is constructed to have a size and shape similar to that of the cap (400) and then removed. Therefore, the space from which the masking member is removed can also have a size and shape similar to that of the cap (400).

When the masking member is removed, a cap (400) can be fitted in the place where the masking member was removed. In this case, the floating capture (147) can be installed first on the pin (142, 145) and the cap (400) can be coupled to the pin (142, 145). Alternatively, the floating capture (147) can be coupled to the cap (400) first and then the cap (400) can be coupled to the pin (142, 145) at the same time.

According to the above explanation, since the anti-floating device is installed at the bottom of the tank, there is an advantage in that the tank can be prevented from floating without installing a floating chock at the top of the tank. In addition, there is an advantage in that the upper volume of the tank is increased by using the anti-floating device. In addition, there is an advantage in that the upper deck of the hull is leveled, thereby optimizing the structure of the pipes installed at the upper deck.

Although various embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and it will be apparent to those with average knowledge in the relevant technical field that various modifications and variations are possible within a scope that does not depart from the technical spirit of the present invention described in the claims. In addition, some of the components in the above-described embodiments may be deleted and implemented, and each embodiment may be implemented in combination with each other.

Claims

A first connecting member coupled to the hull;

a second connecting member coupled to the tank; and

A floating capture connecting the first connecting portion and the second connecting portion;

The above floating capture is a floating prevention device with a belt structure.
In the first paragraph,

including a first pin arranged in the first connecting portion;

The floating capture is a floating prevention device in which at least a portion of the inner surface is spaced apart from at least a portion of the outer surface of the first pin in the longitudinal direction of the floating capture.
In the second paragraph,

a second pin disposed in the second connecting portion;

The above floating capture is a floating prevention device arranged to surround the first pin and the second pin.
In the first paragraph,

The above floating captures are placed in multiples,

A floating prevention device in which a plurality of the floating captures are spaced apart along the length direction of the first connecting portion.
In the first paragraph,

The material of the above floating capture is an elastic or steel floating prevention device.
In the first paragraph,

A floating prevention device including a cap fitted to one end of the floating capture.
In Article 6,

A first pin arranged in the first connecting portion;

a second pin arranged in the second connecting portion; and

The above floating capture is arranged to surround the first pin and the second pin,

A floating prevention device in which one end of the second pin is fitted into the above cap.