Floating prevention device

Abstract

A floating prevention device according to one embodiment includes a first connecting portion connected to the hull; a second connecting portion connected to the tank; and a floating capture connecting the first support and the second support, wherein the floating capture is a belt structure.

Description

Technical Field

[0001] It relates to an anti-floating device for preventing the floating of a tank arranged on a ship.

Background Art

[0002] Ships are used to transport gas. The gas to be transported can be liquefied gas. The gas is filled into a tank, and the tank is housed inside the hull of the ship. During the transportation process, the ship may sink due to an unexpected accident.

[0003] When the ship sinks, since the gravity acting on the ship is greater than the buoyancy acting on the ship, the resultant force of the gravity and buoyancy acting on the ship is downward with respect to the water surface. However, since the density of the tank housed inside the hull of the ship is smaller than the density of water, the resultant force of the gravity and buoyancy acting on the tank under the condition that the ship sinks is upward with respect to the water surface. Therefore, when the ship sinks, the tank may float up, and the tank may collide with the inner surface of the hull, causing damage to the hull and the tank.

[0004] In order to prevent damage to the hull and the tank, conventionally, anti-floating chocks have been installed on the outer surface of the tank and inside the hull. However, the anti-floating chocks need to be installed on all the inner surfaces of the hull that can contact the tank. Also, the anti-floating chocks should be installed on the tank that can contact the inner surface of the hull. There is a problem that a large amount of materials are required for the installation of the anti-floating chocks, and more man-hours are invested due to the complicated installation.

[0005] Furthermore, conventionally, reinforcing materials were installed on the inner surface of the hull in order to install anti-floating chocks. These reinforcing materials are intended to ensure structural safety of the hull and the tank itself when in contact with the anti-floating chocks. They are installed in the same location as the anti-floating chocks, and their installation direction is directed towards the interior of the hull, that is, they are positioned on the surface facing inward and designed to have sufficient strength to withstand contact with the anti-floating chocks. However, when the reinforcing materials are positioned towards the interior of the hull where the tanks are housed, there is a problem in that the size of the space in which the tanks can be placed and the tank capacity are reduced by the amount of space occupied by the reinforcing materials. [Overview of the project] [Problems that the invention aims to solve]

[0006] Embodiments of the present invention aim to provide a floating prevention device that has a simple structure while stably supporting a tank, in order to solve the problems described above. [Means for solving the problem]

[0007] A floating prevention device according to one embodiment of the present invention includes a first connecting portion connected to the hull; a second connecting portion connected 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.

[0008] The floating capture includes a first pin disposed in the first connecting portion, wherein at least a portion of the inner circumferential surface of the floating capture is spaced apart from at least a portion of the outer circumferential surface of the first pin in the longitudinal direction of the floating capture.

[0009] The floating capture includes a second pin located in the second connecting portion, and is positioned to surround the first pin and the second pin.

[0010] Multiple floating captures are arranged, and these floating captures are spaced apart along the length of the first connecting portion.

[0011] The material of the floating capture described above is either an elastic material or steel.

[0012] It includes a cap that is fitted and coupled to one end of the floating capture described above.

[0013] The first pin positioned in the first connecting portion, the second pin positioned in the second connecting portion, and the floating capture are arranged to surround the first pin and the second pin, and one end of the second pin is fitted and coupled to the cap. [Effects of the Invention]

[0014] According to the present invention, when a ship sinks, it is possible to prevent the tank from floating up from inside the hull. Furthermore, when a ship sinks, it is possible to prevent the tank from colliding with the hull and damaging both the tank and the hull.

[0015] Furthermore, by leveling the upper part of the hull's deck through the placement of reinforcing members, the support structure for the piping can be optimized, and a larger space can be secured for tanks to be placed inside the hull, thereby increasing the tank capacity.

[0016] Furthermore, using a cap makes it easier to install the anti-floating device and improves the tank's thermal insulation performance. [Brief explanation of the drawing]

[0017] [Figure 1] This figure shows a cross-section of the hull of a ship and a tank located inside the hull, according to one embodiment of the present invention. [Figure 2] This is a magnified view of a part of the ship and the anti-floating device shown in Figure 1. [Figure 3] This figure shows a cross-section along the line A-A' in Figure 2. [Figure 4] A diagram showing floating capture according to an embodiment of the present invention. [Figure 5] A diagram showing the upper part of the hull of a ship according to an embodiment of the present invention. [Figure 6] A diagram showing a cross-section of the hull of a ship according to the prior art and a tank arranged inside the hull. [Figure 7] A diagram comparing the tank of a ship according to the prior art and the tank of a ship according to an embodiment of the present invention. [Figure 8] A diagram showing the coupling structure between the anti-floating device and the cap. [Figure 9] A diagram showing the coupling structure between the anti-floating device and the cap. [Figure 10] A perspective view of the cap according to the present invention. [Figure 11] A plan view of the cap according to the present invention. [Figure 12] A flowchart showing a method of performing heat insulation construction on a tank of a ship according to the present invention.

Mode for Carrying Out the Invention

[0018] Prior to the detailed description of the present invention, terms and words used in this specification and the claims should not be construed as being limited to their ordinary or dictionary meanings. The inventor should interpret them in meanings and concepts consistent with the technical idea of the present invention in accordance with the principle that the inventor can appropriately define the terms as concepts for explaining his own invention in the best way. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modifications that can replace them at the time of this application.

[0019] In the following description, unless the context clearly dictates otherwise, singular expressions include plural expressions. Terms such as "including" or "comprising" are intended to specify the presence of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preclude in advance the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0020] In addition, in the following description, expressions such as upper side, upper part, lower side, lower part, side surface, front surface, and back surface are expressed based on the directions shown in the figures. It should be clearly stated in advance that when the direction of the object is changed, it may be expressed differently.

[0021] Furthermore, in this specification and the claims, for the purpose of distinguishing components, terms including ordinal numbers such as "first", "second", etc. can be used. Such ordinal numbers are used to distinguish the same or similar components from each other, and the meaning of the terms should not be limitedly interpreted by the use of such ordinal numbers. As an example, components combined with such ordinal numbers should not be limitedly interpreted by their numbers in terms of the order of use, the order of arrangement, etc. If necessary, each ordinal number can also be used by exchanging with each other.

[0022] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the idea of the present invention is not limited to the presented embodiments. For example, a person of ordinary skill in the art who understands the idea of the present invention can propose other embodiments included within the scope of the idea of the present invention by adding, changing, or deleting components, etc., and this can also be said to be included within the scope of the idea of the present invention. The shapes and sizes of the elements in the drawings may be exaggerated for a clearer description.

[0023] FIG. 1 is a diagram showing a cross-section of the hull of a ship and a tank arranged inside the hull according to an embodiment of the present invention.

[0024] Referring to Figure 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 a floating prevention device 140.

[0025] The hull 110 forms at least a part of the exterior of the vessel 100 and may be configured to house the tank 120 inside. For example, the interior of the hull 110 may be provided with a housing space 115 in which the tank 120 can be placed. A floating prevention device 140 may be provided between the hull 110 and the tank 120.

[0026] The accommodation space 115 of the hull 110 may be provided as a space enclosed by the upper plate 111, lower plate 112, and side plates 113, 114 of the hull 110. The upper plate 111 and lower plate 112 are arranged to face each other at a distance from each other, and the two side plates 113, 114 can connect the ends of the upper plate 111 and lower plate 112, respectively. For example, the inner surfaces (e.g., the surfaces facing the interior of the hull 110) of the upper plate 111, lower plate 112, and side plates 113, 114 can form the upper surface, lower surface, and side surface of the accommodation space 115, respectively. The upper plate 111 of the hull 110 and the tank 120 can be arranged to be separated by a specified distance without any separate structure connecting them.

[0027] The upper plate 111 of the hull 110 can be inclined at a predetermined angle. The upper plate 111 can be inclined to form a predetermined angle with a virtual extension line extending in a direction parallel to the lower plate 112. For example, the upper plate 111 may be formed with the left and right portions inclined downwards with respect to a center line C that extends in the height direction H while passing through the center of the width direction W of the hull 110. Here, the virtual extension line may be parallel to the width direction W of the hull 110, or it may be perpendicular to the center line C. Specifically, with respect to the center line C of the hull 110, the left portion of the upper plate 111 can be connected to the first side plate 113 while inclined at a predetermined angle toward the lower plate 112, and the right portion of the upper plate 111 can be connected to the second side plate 114 while inclined at a predetermined angle toward the lower plate 112.

[0028] The height direction H of the hull 110 can mean the vertical 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 can mean the left-right direction, that is, the directions in which the side plates 113 and 114 face. The length direction of the hull 110 is the front-rear direction of the hull 110, and can mean the direction in which the vessel 100 moves during operation and the opposite direction. For example, Figure 1 shows a cross-section of the vessel 100 cut in the width direction W.

[0029] The hull 110 can be symmetrical with respect to the centerline C, but is not limited thereto. Reinforcing members 130 may be placed on the upper plate 111 of the hull 110. For example, the reinforcing members 130 may be placed on the surface of the upper plate 111 of the hull 110 that faces outward.

[0030] The tank 120 can be located in the storage space 115 of the hull 110. Inside the tank 120, a storage space may be provided for storing or containing cargo. The tank 120 may be configured to contain liquefied gas. For example, the substance loaded or stored in the tank 120 may be LNG or LPG. However, the substance stored in the tank 120 is not limited to liquefied gas, and various substances can 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 to this.

[0031] The tank 120 is positioned in the hull 110's containment space 115 and can be separated from the inner surface of the containment space 115. For example, the outer surface of the tank 120 may be separated from the inner surface of the containment space 115 by a predetermined distance. The tank 120 may include an upper surface 121, sides 123, 124, and a lower surface 122 that form the exterior of the tank 120. The upper surface 121 of the tank 120 can be separated from and facing the upper plate 111 of the hull 110, the lower surface 122 of the tank 120 can be separated from and facing the lower plate 112 of the hull 110, and the two sides 123 and 124 of the tank 120 can be separated from and facing the two side plates 113 and 114 of the hull 110, respectively.

[0032] The reinforcing member 130 can be positioned on the upper plate 111 of the hull 110 so as to be located outside the hull 110. For example, the reinforcing member 130 may be positioned on the upper part or upper surface of the upper plate 111. The reinforcing member 130 can be referred to as a structure that prevents bending or buckling of the upper plate 111 by being fixed to the upper plate 111. For example, the reinforcing member 130 may be installed on the upper part of the upper plate 111 via various coupling or fastening methods.

[0033] The reinforcing member 130 may be provided such that its upper edge 133 is horizontal. The upper edge 133 of the reinforcing member 130 may be perpendicular to the centerline C of the hull 110. Also, the upper edge 133 of the reinforcing member 130 may extend parallel to the width direction W and / or the length direction. For example, the upper edge 133 of the reinforcing member 130 may be at a predetermined angle with the upper plate 111 of the hull 110 which is inclined at a predetermined angle, and may also be parallel to the lower plate 112 of the hull 110. Specifically, the reinforcing member 130 may be provided such that its upper edge 133 is parallel to a virtual extension line extending in a direction parallel to the lower plate 112. That is, the upper plate 111 is formed inclined to form a predetermined angle with the virtual extension line, and the reinforcing member 130 is formed such that its upper edge 133 is parallel to the virtual extension line.

[0034] The reinforcing member 130 may be provided with a shape in which its height gradually increases and / or decreases. The reinforcing member 130 may be formed with a shape in which its height differs along the width direction W with respect to the centerline C of the hull 110. For example, when viewed with respect to the cross section of Figure 1, the reinforcing member 130 may be provided with a shape in which, with respect to the centerline C, a portion located on the left side gradually increases in height as it moves towards the first side plate 113, and a portion located on the right side gradually increases in height as it moves towards the second side plate 114. The detailed structure and arrangement of the reinforcing member 130 will be described later with reference to Figure 5.

[0035] The anti-floating device 140 can connect a part of the hull 110 to a part of the tank 120. The anti-floating device 140 is positioned between the lower surface 122 of the tank 120 and the lower plate 112 of the hull 110, and can connect the lower surface 122 and the lower plate 112. Multiple anti-floating devices 140 may be provided. For example, multiple anti-floating devices 140 can be positioned spaced apart from each other to connect the hull 110 and the tank 120.

[0036] The floating prevention device 140 connects the tank 120 to the hull 110 with a predetermined strength. When buoyancy acts on the tank 120 due to circumstances such as the sinking of the vessel on which the tank 120 is installed, the floating and movement of the tank 120 is restricted, thereby preventing the tank 120 from colliding with the hull 110. The detailed structure and connection structure of the floating prevention device 140 will be described in detail below with reference to Figure 2.

[0037] In one embodiment of the present invention, a vessel 100 is provided with a floating prevention device 140 between the lower surface 122 of the tank 120 and the hull 110. By connecting and supporting the tank 120 and the hull 110, no separate connecting structure, fixing structure, or support structure is required between the other outer surfaces of the tank 120 (excluding the lower surface 122) and the hull 110. In particular, the floating of the tank 120 can be prevented even without a separate device (e.g., an anti-floating chock) to separate the upper plate 111 of the hull 110 and the upper surface 121 of the tank 120 at a fixed distance.

[0038] Furthermore, in the vessel 100 according to one embodiment of the present invention, since it is possible to omit connecting structures, fixing structures, or support structures between the upper surface 121 of the tank 120 and the upper plate 111 of the hull 110, reinforcing members for installing these structures do not need to be provided between the upper plate 111 and the tank 120. Therefore, the reinforcing member 130 can be installed outside the hull 110, in particular on the upper part of the upper plate 111 (for example, on the upper deck of the hull), rather than inside the accommodation space 115.

[0039] Furthermore, in the vessel 100 according to one embodiment of the present invention, the reinforcing member 130 is not placed on the side of the hull 110's accommodation space 115, but is placed outside the upper plate 111 of the hull 110, thereby securing a relatively large accommodation space 115, and correspondingly increasing the capacity of the tank 120.

[0040] Figure 2 is a magnified view of a part of the ship and the anti-floating device shown in Figure 1.

[0041] Figure 2 is a diagram showing the detailed configuration of the floating prevention device 140, with the left side of the vessel 100 enlarged and the center line C as the reference point in the cross-sectional view shown in Figure 1. Figure 3 is a diagram showing a cross-section along the line A-A' in Figure 2.

[0042] Referring to Figures 2 and 3, the anti-floating device 140 can connect the lower surface 122 of the tank 120 to the hull 110. This allows the anti-floating device 140 to support the load of the tank 120 (e.g., vertical load) and to prevent the tank 120 from floating due to buoyancy in certain situations (e.g., ship sinking).

[0043] 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.

[0044] The first connecting portion 141 can be positioned on the lower plate 112 of the hull 110. The first connecting portion 141 can be connected to a second connecting portion 144 positioned 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 can be coupled to the surface of the lower plate 112 of the hull 110 facing the tank 120. The first connecting portion 141 can project from the lower plate 112 of the hull 110 toward the tank 120. The longitudinal direction of the first connecting portion 141 may be parallel to the lower plate 112 of the hull 110. The tank 120 can be positioned above the first connecting portion 141, and the first connecting portion 141 can support the load of the tank 120. A first pin 142 can be inserted into the first connecting portion 141. For example, a hole (not shown) for inserting the first pin 142 may be formed in the first connecting portion 141. A floating capture 147 can be connected to the first pin 142.

[0045] The first reinforcing portion 143 may be a flat plate with a hole in the center. The first reinforcing portion 143 may be a flat plate with a certain thickness. The first reinforcing portion 143 can be in contact with the first connecting portion 141. The hole in the first reinforcing portion 143 can be aligned with the hole in the first connecting portion 141. The first pin 142 can be inserted into the hole in the first reinforcing portion 143 and the hole in the first connecting portion 141. The first reinforcing portion 143 can be positioned between the first connecting portion 141 and the first pin 142 to reduce the bending moment acting between them. Alternatively, the first reinforcing portion 143 may be positioned between the first connecting portion 141 and the floating capture 147.

[0046] The second coupling portion 144 can be positioned on the underside 122 of the tank 120. The second coupling portion 144 can be connected to the first coupling portion 141 positioned on the hull 110. For example, the second coupling portion 144 may be connected to the first coupling portion 141 via a floating capture 147. The second coupling portion 144 can be coupled to the underside 122 of the tank 120 facing the hull 110. The second coupling portion 144 can project from the underside 122 of the tank 120 toward the lower plate 112 of the hull 110. The second coupling portion 144 can be symmetrical with the first coupling portion 141. The tank 120 can be positioned above the second coupling portion 144. The second coupling portion 144 can be in contact with the first coupling portion 141 and together with the first coupling portion 141 can support the load of the tank 120. A second pin 145 can be inserted into the second coupling portion 144. For example, the second connecting portion 144 may have a hole (not shown) for inserting the second pin 145. A floating capture 147 can be connected to the second pin 145.

[0047] The second reinforcing portion 146 may be a flat plate with a hole in the center. The second reinforcing portion 146 may be a flat plate with a certain thickness. The second reinforcing portion 146 can be in contact with the second connecting portion 144. The hole in the second reinforcing portion 146 can be aligned with the hole in the second connecting portion 144. The second pin 145 can be inserted into the hole in the second reinforcing portion 146 and the hole in the second connecting portion 144. The second reinforcing portion 146 can be positioned between the second connecting portion 144 and the second pin 145 to reduce the bending moment acting between them. Alternatively, the second reinforcing portion 146 may be positioned between the second connecting portion 144 and the floating capture 147.

[0048] The floating capture 147 can connect the first connecting portion 141 and the second connecting portion 144. For example, the floating capture 147 can connect the first connecting portion 141 to the first connecting portion 141 by connecting to the first pin 142 inserted into the first connecting portion 141 and the second pin 145 inserted into the second connecting portion 144. The floating capture 147 may also be a belt. For example, the floating capture 147 can be connected to the first pin 142 and the second pin 145 while surrounding them. Specifically, a part of the floating capture 147 can contact the first pin 142, and another part opposite to the part that contacts the first pin 142 can contact the second pin 145.

[0049] The floating capture 147 connects the first pin 142 (i.e., the first connecting portion 141) and the second pin 145 (i.e., the second connecting portion 144), thereby restricting the behavior and / or separation between the first connecting portion 141 and the second connecting portion 144 to a predetermined range. In other words, by restricting the second connecting portion 144 from separating from the first connecting portion 141 beyond a specified distance using the floating capture 147, it is possible to prevent the tank 120 from floating off the lower plate 112 of the hull 110 and colliding with the inner surface of the containment space 115.

[0050] Multiple floating captures 147 can be provided. For example, the first connecting portion 141 and the second connecting portion 144 may be connected via multiple floating captures 147. According to the embodiment shown in Figure 2, the first connecting portion 141 and the second connecting portion 144 can be connected by four floating captures 147 arranged spaced apart from each other. When multiple floating captures 147 are provided, correspondingly multiple first pins 142 and second pins 145 can also be provided, and the first connecting portion 141 and the second connecting portion 144 may be provided with multiple holes for inserting multiple first pins 142 and multiple second pins 145.

[0051] Figure 4 is a perspective view of a floating capture according to an embodiment of the present invention.

[0052] 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.

[0053] The second inner surface 363 can 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 can 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 can 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.

[0054] The material of the floating capture 147 may be a composite material with high tensile strength. For example, the floating capture 147 may be made of CFRP (carbon fiber reinforced plastics). However, it is not limited to CFRP, and any material having sufficient tensile strength to prevent the tank 120 from floating when the ship sinks may be used. The floating capture 147 may be elastic. The material of the floating capture 147 may be steel. In this case, the floating capture 147 may have sufficient tensile strength to prevent the tank 120 from floating when the ship sinks.

[0055] Figure 5 shows the upper part of the hull of a ship according to one embodiment of the present invention.

[0056] For example, Figure 3 may be a perspective view of the upper plate 111 of the hull 110 of the vessel 100 shown in Figure 1, viewed from above.

[0057] Referring to Figure 5, a vessel 100 according to one embodiment of the present invention may be provided such that a reinforcing member 130 is positioned on the upper plate 111 of the hull 110.

[0058] The reinforcing member 130 can be positioned on the upper part of the top plate 111 (e.g., the upper surface or outer surface) so as to be located outside the hull 110. Here, the top plate 111 can be referred to as the deck or upper deck of the hull 110.

[0059] The reinforcing member 130 may include a first reinforcing member 131 extending in the width direction W on the upper plate 111 of the hull 110, and a second reinforcing member 132 extending in the length direction L 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 the main reinforcing member, and the second reinforcing member 132 as the sub-reinforcing member. Since Figures 1 and 2 show a cross-section in the width direction W, the reinforcing member 130 in Figures 1 and 2 may be referred to as the first reinforcing member 131.

[0060] The first reinforcing member 131 may have a shape having different heights along the width direction W. The first reinforcing member 131 can be installed on an inclined upper plate 111 with a predetermined inclination. 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, the horizontal arrangement of the first upper edge portion 133 can be achieved by providing the first reinforcing member 131 on the inclined upper plate 111 with a shape having different heights along the width direction W.

[0061] Multiple first reinforcing members 131 may be provided. For example, multiple first reinforcing members 131 may be arranged at intervals specified in the longitudinal direction L. Multiple first reinforcing members 131 may be formed in a shape such that the first upper edge portion 133 becomes horizontal in accordance with the inclination of the upper plate 111 on which each is arranged.

[0062] The second reinforcing member 132 can at least partially penetrate the first reinforcing member 131 and can be connected to and fixed to the first reinforcing member 131. The second reinforcing member 132 can extend in the longitudinal direction L so as to penetrate each of the multiple first reinforcing members 131. The second reinforcing member 132 may include a second upper edge portion 134 that is connected to the first upper edge portion 133. The second upper edge portion 134 may also be positioned horizontally, similar to the first upper edge portion 133. The second upper edge portion 134 of the second reinforcing member 132 may be parallel to the longitudinal direction L of the hull 110.

[0063] Since the first reinforcing member 131 and the second reinforcing member 132 are positioned on the upper plate 111 of the hull 110, they can support at least a portion of the multiple pipes (not shown) installed on the upper plate 111. This reduces the length and size of the structure supporting the multiple pipes on the upper plate 111, making it possible to reduce weight. Furthermore, since the upper edges 133 and 134 of the first reinforcing member 131 and the second reinforcing member 132 are horizontalized, multiple pipes can be installed and supported on the horizontal portion. This makes it possible to achieve an easy and stable support structure for installing multiple pipes.

[0064] Figure 6 shows a cross-section of the hull and a tank located inside the hull of a conventional vessel. Figure 7 is a comparison of a tank in a conventional vessel and a tank in a vessel according to one embodiment of the present invention.

[0065] Figures 6 and 7 are diagrams for comparing a vessel 100 according to one embodiment of the present invention with a conventional vessel 10, and specifically illustrate that, unlike the conventional vessel 10, the modified structure provides the effect of increasing the capacity of tanks 13 and 120.

[0066] Referring to Figure 6, the conventional vessel 10 may include a hull 11, a tank 13, a reinforcing member 14, and an anti-floating chock 15.

[0067] In comparison with the vessel 10 according to one embodiment of the present invention, the conventional vessel 10 is provided with an anti-floating chock 15 between the top surface of the tank 13 and the hull 11, and a reinforcing member 14 is arranged on the upper plate 12 of the hull 11 to contact the anti-floating chock 15 in accordance with the installation of the anti-floating chock 15. In this case, the reinforcing member 14 needs to be positioned facing the anti-floating chock 15, and is therefore positioned inside the hull 11, that is, on the side of the space where the tank 13 is housed. Specifically, the reinforcing member 14 is installed on the surface of the upper plate 12 of the hull 11 facing the inside of the hull 11 or on the surface facing the tank 13, and the anti-floating chock 15 is positioned between the reinforcing member 14 and the tank 13.

[0068] In conventional vessels 10, the reinforcing member 14 is placed inside the hull 11, reducing the available space for the tank 13 by the amount of space occupied by the reinforcing member 14, and the tank 13 is formed to a size corresponding to the available space. In other words, conventionally, the capacity of the tank 13 is limited by the placement of the reinforcing member 14 on the inner surface of the upper plate 12, corresponding to the installation position of the anti-floating chock 15.

[0069] In contrast, the vessel 100 according to one embodiment of the present invention supports and prevents the tank 120 from floating via a floating prevention device 140 positioned between the bottom surface of the tank 120 and the hull 110, as described above. By positioning a reinforcing member 130 on the upper part of the deck (i.e., the upper plate 111) of the hull 110, the size of the space in which the tank 120 can be placed can be increased.

[0070] According to one embodiment of the present invention, the space previously occupied by the reinforcing member 14 in the prior art can be utilized as space for arranging tanks 13 and 120, thereby increasing the capacity and volume of tanks 13 and 120 as shown in Figure 5. In other words, the ship 100 of the present invention can carry tanks 120 having a larger capacity and volume than the tanks 13 of the ship 10 of the prior art, depending on the arrangement of the reinforcing member 130 on the upper deck. For example, the tanks 120 provided in the ship 100 of the present invention can have a volume increased by about 6-7% compared to the tanks 13 provided in the ship 10 of the prior art, but the above figures are illustrative and not limited thereto.

[0071] Figures 8 and 9 show the coupling structure of the anti-floating device and the cap, Figure 10 is a perspective view of the cap according to the present invention, and Figure 11 is a plan view of the cap according to the present invention.

[0072] The cap 400 may include a body portion 410 and a gripping portion 420.

[0073] The body portion 410 and the gripping portion 420 can be joined together. The body portion 410 and the gripping portion 420 may be formed integrally. One surface of the body portion 410 and one surface of the gripping portion 420 can be in contact and joined together.

[0074] The body portion 410 and the gripping portion 420 may be cylindrical in shape. The body portion 410 and the gripping portion 420 may also be similar in shape to a disc with a substantially thick surface. The body portion 410 may include a groove portion 415.

[0075] The radius of the gripping portion 420 may be larger than the radius of the body portion 410. Therefore, a step can be formed between the outer surface of the gripping portion 420 and the outer surface of the body portion 410.

[0076] The body portion 410 may include a groove portion 415. The groove portion 415 may be located on one surface of the body portion 410. The surface of the body portion 410 on which the groove portion 415 is located may be the surface opposite to the surface of the body portion 410 on which the grip portion 420 is located.

[0077] The groove 415 may be formed by recessing it in the axial direction of the body portion 410 on one surface of the body portion 410. The first pin 142 or the second pin 145 and the floating capture 147 may be fitted and coupled into the groove 415.

[0078] The cap 400 can be used to connect the floating capture 147 to the first pin 142 and the second pin 145. The operator can then connect the floating capture 147, mated with the cap 400, to the first pin 142 and the second pin 145.

[0079] A cap 400 may be attached to one side of the floating capture 147. When an operator connects the floating capture 147 to the first pin 142 or the second pin 145, they can grasp the gripping portion 420 of the cap 400 and connect the floating capture 147 to the first pin 142 or the second pin 145. Therefore, the operator can easily connect the floating capture 147 to the first pin 142 or the second pin 145 using the cap 400.

[0080] Furthermore, the floating capture 147 and the first pin 142 can be positioned within a predetermined distance. 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 positioned 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 positioned apart from each other in the longitudinal direction of the floating capture 147.

[0081] In other words, with reference to the state in which the floating capture 147 is coupled to the first pin 142 and the second pin 145, if the maximum distance between the outer surface of the first pin 142 and the outer surface of the second pin 145 is defined as the first separation distance, and the maximum width of the inner surface of the floating capture 147 is defined as the second separation distance, then the second separation distance is greater than the first separation distance.

[0082] In other words, the floating capture is positioned to surround the first and second pins, which are spaced apart from each other. However, a gap 150 can be provided between a portion of the outer surface of the first pin 142 and a portion of the inner surface of the floating capture 147, allowing the worker to easily connect the floating capture 147 to the first pin 142 and the second pin 145. Furthermore, during the process of positioning the tank 120 inside the hull 110, the position of the tank 120 may change. Specifically, a change in the position of the tank 120 may cause misalignment of the first pin 142 and the second pin 145. However, because 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, the installation or removal of the floating capture 147 is made easier.

[0083] The following section describes the tank insulation method with reference to Figure 12. Figure 12 is a flowchart illustrating the tank insulation method.

[0084] As mentioned above, the tank 120 is filled with liquefied gas. Since the gas filled in the tank 120 is a gaseous gas at room temperature, the temperature of the liquefied gas inside the tank 120 is lower than room temperature. Therefore, if the surface of the tank 120 is exposed to the outside, condensation and ice may form on the surface of the tank 120 due to the temperature difference between the outside and the inside of the tank 120. For this reason, it is preferable to apply an insulating material to the surface of the tank 120.

[0085] The insulation material is preferably applied before the tank 120 is placed inside the ship's hull, in order to facilitate the work and minimize areas that are not insulated.

[0086] As mentioned above, connecting parts 141 and 144 are located at the bottom of the tank 120. Pins 142 and 145 are inserted into the connecting parts 141 and 144, and the floating capture 147 described above can be connected to the pins 142 and 145.

[0087] Before applying the insulation material, pins 142 and 145 are attached to the connecting parts 141 and 144. Here, connecting parts 141 and 144 refer to the first connecting parts 141 and 144 and the second connecting parts 141 and 144 mentioned above, and pins 142 and 145 refer to the first pin 142 and the second pin 145 mentioned above.

[0088] Pins 142 and 145 have one end and the other end exposed to the outside. That is, one end and the other end of pins 142 and 145 are positioned to protrude to the outside of the connecting portions 141 and 144.

[0089] The worker applies masking material to one end and the other end of pins 142 and 145. The masking material can be any material that surrounds one end and the other end of pins 142 and 145, and is not limited to any specific material. However, it is preferable that the masking material is one that can be easily removed from pins 142 and 145.

[0090] It is preferable that the masking member is installed along the outer circumferential surface of the pins 142 and 145, surrounding one end and the other end of the pins 142 and 145. That is, it is preferable that the masking member is installed in a circular shape, surrounding one end and the other end of the pins 142 and 145, when viewed from the axial direction of the pins 142 and 145. More specifically, it is preferable that the masking member is installed in a shape and size that is substantially similar to the cap 400, when viewed from the axial direction of the pins 142 and 145.

[0091] Once masking material is applied to pins 142 and 145, insulating material is applied to the surface of tank 120. Here, it is preferable that the insulating material be made of a material with low thermal conductivity. For example, polyurethane foam can be used as the insulating material. It is preferable that the insulating material be applied along the surface of tank 120. If insulating material is not applied to a part of the surface of tank 120, condensation and ice may occur on the surface of tank 120 where the insulating material is not applied. Therefore, unless other devices are attached to the surface of tank 120, it is preferable to apply insulating material to as much of the surface of tank 120 as possible.

[0092] The insulation material is applied to the entire surface of the tank 120. Therefore, it can also be applied to the connecting parts 141 and 144 located at the bottom of the tank 120 and around the connecting parts 141 and 144. At this time, the insulation material may also be applied to the masking members installed on one end and the other end of the pins 142 and 145.

[0093] Once the application of the insulation material is complete, the masking members applied to one end and the other end of the pins 142 and 145 can be removed. When viewed from the axial direction of the pins 142 and 145, the masking members are applied and then removed in a size and shape similar to that of the cap 400, so the space where the masking members were removed can also have a size and shape similar to that of the cap 400.

[0094] Once the masking member is removed, the cap 400 can be fitted into the position where the masking member was removed. In this case, the floating capture 147 can be installed on pins 142 and 145 first, and the cap 400 can be connected to pins 142 and 145. Alternatively, the floating capture 147 can be connected to the cap 400 first, and then the cap 400 can be connected to pins 142 and 145, thereby connecting both the floating capture 147 and the cap 400 to pins 142 and 145 simultaneously.

[0095] Based on the above explanation, since the anti-floating device is installed at the bottom of the tank, it has the advantage of preventing the tank from floating without installing a floating chock at the top of the tank. In addition, using the anti-floating device has the advantage of increasing the upper volume of the tank. Furthermore, it has the advantage of leveling the upper deck of the ship's hull and optimizing the structure of piping installed on the deck.

[0096] 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 is obvious to a person with average skill in the art that various modifications and variations are possible without departing from the technical idea of ​​the present invention as described in the claims. Furthermore, some components of the above-described embodiments can be omitted, and the embodiments can be combined with each other.

Claims

1. First connecting section that is attached to the hull; A second connecting portion that is connected to the tank; and A floating capture connecting the first connecting portion and the second connecting portion; The floating capture device is a belt structure, and is a floating prevention device.

2. A first pin disposed in the first connecting portion; The floating prevention device according to claim 1, wherein at least a portion of the inner circumferential surface of the floating capture is arranged to be spaced apart from at least a portion of the outer circumferential surface of the first pin in the longitudinal direction of the floating capture.

3. A second pin located in the second connecting portion; The floating prevention device according to claim 2, wherein the floating capture is arranged to surround the first pin and the second pin.

4. Multiple floating captures are arranged, The floating prevention device according to claim 1, wherein the plurality of floating captures are arranged spaced apart along the longitudinal direction of the first connecting portion.

5. The floating prevention device according to claim 1, wherein the material of the floating capture is an elastic material or steel.

6. The floating prevention device according to claim 1, comprising a cap fitted and coupled to one end of the floating capture.

7. A first pin positioned in the first connecting portion; A second pin positioned in the second connecting portion; and The floating capture is positioned to surround the first pin and the second pin, The floating prevention device according to claim 6, wherein one end of the second pin is fitted and coupled to the cap.

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