KR101531302B1 - Self-supporting fuel tank and vessel having the same - Google Patents

Abstract

The present invention relates to a stand-alone type fuel tank and a ship having the stand-alone type fuel tank. The stand-alone type fuel tank stores the fuel required for a ship in a liquid state and is installed in an independent structure in a hold of a ship. Frame; A heat insulating member provided on an inner wall of the frame so as to heat the liquid fuel; And a reinforcement member provided on the outer wall of the frame to reinforce the load supporting force of the frame.

Description

[0001] Description [0002] SELF-SUPPORTING FUEL TANK AND VESSEL HAVING THE SAME [0003]

The present invention relates to a stand-alone fuel tank and a ship having the fuel tank.

Recently, LNG fueled vessels using Liquefied Natural Gas (LNG) are expected to be used as fuel for the operation of ships, and the need for stand-alone fuel tanks that can be installed on existing vessels It is being raised. In the conventional stand-alone type fuel tank, a heat insulating material is attached to the outside to insulate the low temperature liquid fuel from the outside, and a load supporting structure is provided inside. In such a conventional stand-alone fuel tank, stainless steel, which is a high-priced material, is used as a load supporting structure in order to withstand low temperatures inside. In addition, in the conventional method, when the adiabatic system is applied to the outside, the design of the support structure for supporting the stand-alone fuel tank in the hold of the ship is complicated, and the internal load supporting structure is contracted It is necessary to prepare for the fuel tank and the like.

The present invention provides a stand-alone fuel tank capable of reinforcing the load-bearing capacity of a stand-alone fuel tank at a low cost and a ship having the fuel tank.

Another object of the present invention is to provide a stand-alone fuel tank and a ship having the stand-alone fuel tank, which can prevent the complicated design of the support structure between the stand-alone fuel tank and the hold of the ship.

Another object to be solved by the present invention is to provide a load supporting function and a function of supporting a stand-alone fuel tank by a reinforcing member at the same time so that a separate support structure for supporting between the hold of the ship and the fuel tank is installed A stand-alone type fuel tank which can be installed in a hold of a ship without using the stand-alone type fuel tank and can efficiently install a stand-alone type fuel tank by utilizing a minimum space, and a vessel provided with the same.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the description below.

In order to solve the above problems, a stand-alone type fuel tank according to an aspect of the present invention is a stand-alone type fuel tank that stores fuel required for a ship in a liquid state and is installed in an independent structure in a hold of a ship, A frame forming an inner space; A heat insulating member installed on an inner wall of the frame to heat the liquid fuel; And a reinforcing member provided on an outer wall of the frame to reinforce a load supporting force of the frame.

In one embodiment of the present invention, the heat insulating member comprises: a heat insulating block provided on an inner wall of the frame; And a membrane member installed on the heat insulating block in contact with the liquid fuel.

In an embodiment of the present invention, the independent fuel tank further includes a sloshing prevention device provided in an inner space of the frame to prevent sloshing of the liquid fuel.

In one embodiment of the present invention, the anti-sloshing device includes: a plurality of floats floating in the liquid fuel inside the frame; And a connecting member connecting the adjacent sub-fluids.

In one embodiment of the present invention, the stand-alone fuel tank further includes a partition member installed vertically inside the frame and separating the internal space of the frame into a plurality of spaces.

According to an embodiment of the present invention, the reinforcing member may include: a side reinforcing member vertically installed on a side wall of the frame; And a bottom reinforcement member provided on an outer wall of the bottom surface of the frame.

In one embodiment of the present invention, the side reinforcing member has a shape corresponding to the side wall of the side surface of the holder.

In one embodiment of the present invention, the bottom surface reinforcing member has a shape corresponding to the bottom inner wall of the holder.

In one embodiment of the present invention, the bottom surface reinforcing member has a shape corresponding to the guide groove so as to be inserted into a guide groove provided in an inner wall of the bottom of the holder, and the guide groove and the bottom surface reinforcing member have a cross- And has an inclined surface so as to have a shape.

In one embodiment of the present invention, the reinforcing member includes at least one of a square pillar, a semicircular pillar, a semi-elliptical pillar, and a T-shaped pillar.

According to another aspect of the present invention, there is provided a ship comprising a hold and a stand-alone fuel tank which is installed in the hold in an independent structure to store fuel required for a ship in a liquid state, The tank includes a frame forming an inner space for storing the liquid fuel; A heat insulating member installed on an inner wall of the frame to heat the liquid fuel; And a reinforcing member provided on an outer wall of the frame to reinforce a load supporting force of the frame.

According to an embodiment of the present invention, the reinforcing member may include: a side reinforcing member vertically installed on a side wall of the frame; And a bottom reinforcement member provided on an outer wall of the bottom surface of the frame, wherein the hold is formed in a vertical direction so that the side reinforcement member is slidably engaged with an inner side wall of the side surface; And a bottom surface engaging member having a shape corresponding to the bottom surface reinforcing member on the inner wall of the bottom surface.

In one embodiment of the present invention, the hold is formed with a guide groove having a first inclined face so as to have a sectional shape that is downwardly reduced on the inner wall of the bottom face, and the bottom face reinforcement member includes a guide groove And has a second inclined surface so as to have a sectional shape corresponding to the first inclined surface and reduced downward.

According to the embodiment of the present invention, the present invention can reinforce the load bearing capacity of the independent fuel tank at low cost.

Further, according to the embodiment of the present invention, it is possible to prevent the complicated design of the support structure between the stand-alone fuel tank and the ship.

In addition, according to the embodiment of the present invention, the independent fuel tank can be installed in the hold of the ship without providing a separate support structure for supporting between the hold of the ship and the fuel tank, Can be installed efficiently.

The effects of the present invention are not limited to the effects described above. Unless stated, the effects will be apparent to those skilled in the art from the description and the accompanying drawings.

FIG. 1 is a schematic view showing a ship having a self-contained fuel tank according to an embodiment of the present invention.
2 is a cross-sectional view taken along line A-A 'of the stand-alone fuel tank shown in FIG.
3 is a plan view showing a sloshing prevention device constituting a stand-alone type fuel tank according to an embodiment of the present invention.
4 is a cross-sectional view taken along line B-B 'of the independent fuel tank shown in FIG.
5 is a cross-sectional view taken along line C-C 'of the self-contained fuel tank shown in FIG. 2;
6 to 10 are sectional views showing a stand-alone fuel tank according to another embodiment of the present invention.
11 is a longitudinal sectional view of a stand-alone fuel tank according to another embodiment of the present invention.

Other advantages and features of the present invention and methods of achieving them will be apparent by referring to the embodiments described hereinafter in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Although not defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. Terms defined by generic dictionaries may be interpreted to have the same meaning as in the related art and / or in the text of this application, and may be conceptualized or overly formalized, even if not expressly defined herein I will not. A general description of known configurations may be omitted so as not to obscure the gist of the present invention. In the drawings of the present invention, the same reference numerals are used as many as possible for the same or corresponding configurations.

The self-supporting type SPB (Self-supporting Plasma type-B fuel tank) according to the embodiment of the present invention is installed in an independent structure in the hold of a ship in order to store the fuel required for the ship in a liquid state, And a reinforcing member is installed on an outer wall of the frame so as to perform a load bearing function. According to the embodiment of the present invention, since the low temperature liquid fuel is insulated by the heat insulating member provided on the inner wall of the frame, the effect of the low temperature liquid fuel on the reinforcing member provided on the outer wall of the frame can be reduced.

Therefore, it is not necessary to use expensive stainless steel as a reinforcing member to withstand the low temperature of the liquid fuel, and the load supporting force of the independent fuel tank can be reinforced by using a relatively low-cost general steel as the reinforcing steel, The cost of the tank and the vessel can be reduced. Further, according to the embodiment of the present invention, the reinforcing member is prevented from being contracted by the low-temperature liquid fuel, the load supporting design considering the shrinkage of the reinforcing member is not required, and the support structure The complexity of the design can be avoided, and the flexibility of the design is ensured. Further, the sloshing phenomenon of the liquid fuel is suppressed by the sloshing prevention device for suppressing the fluid behavior, so that the fuel can be always supplied (any filling).

In the stand-alone type fuel tank according to the embodiment of the present invention, the side reinforcement member provided on the side of the frame has a shape corresponding to the inner side wall of the hold of the ship, and the bottom surface reinforcement member provided on the bottom surface of the frame, As shown in Fig. The bottom reinforcement member has a shape corresponding to the guide groove to be inserted into the guide groove, and the guide groove and the bottom surface reinforcing member are formed on the inner surface of the bottom of the holder, And has an inclined surface so as to have a sectional shape that is downwardly reduced.

According to the embodiment of the present invention, since the fuel tank can be independently manufactured and assembled independently of the structure of the ship, and the reinforcing member simultaneously performs the load supporting function and the function of supporting the independent fuel tank to the hold, The independent fuel tank can be installed in the hold of the vessel without providing a separate support structure for supporting between the hold of the vessel and the fuel tank. Further, by forming the reinforcing member of the independent type fuel tank in a shape corresponding to the holding structure by using the holding structure of the ship, the independent type fuel tank can be efficiently installed utilizing the minimum space.

FIG. 1 is a schematic view showing a ship having a self-contained fuel tank according to an embodiment of the present invention. Referring to FIG. 1, the ship 10 includes a hull 20, a hold 200 installed on the hull 20, and a stand-alone fuel tank 100 installed in the hold 200. The ship in the embodiment of the present invention may include not only a ship capable of propelling with self-propulsion capability, but also a floating floating structure having a fuel tank for storing liquefied natural gas such as LNG-FPSO (Floating Pourduction Storage Offloading) have. The independent fuel tank 100 is installed in an independent structure in the hold 200 and stores the fuel required for the ship 10 in a liquid state at a low temperature (for example, extremely low temperature of -163 DEG C or less). The liquid fuel may be, for example, Liquefied Natural Gas (LNG), Liquefied Petroleum Gas (LPG), or other liquid fuel.

2 is a cross-sectional view taken along line A-A 'of the stand-alone fuel tank shown in FIG. Referring to FIG. 2, the stand-alone fuel tank 100 according to an embodiment of the present invention includes a frame 110, a heat insulating member 120, a reinforcing member 130, and a sloshing prevention device 140. The frame 110 and the reinforcing member 130 are formed to correspond to the inner surface structure of the holder 200. [ By providing the reinforcing member 130 so as to be disposed in an empty space between the frame 110 and the holder 200, the space can be efficiently utilized.

The frame 110 forms an inner space 111 so that the liquid fuel 300 is stored. The heat insulating member 120 is installed on the inner wall of the frame 110 to insulate the liquid fuel 300 from the outside. The reinforcing member 130 is installed on the outer wall of the frame 110 so as to reinforce the load supporting force of the frame 110. The sloshing prevention device 140 is provided in the inner space 111 of the frame 110 to prevent sloshing of the liquid fuel 300.

The heat insulating member 120 includes a heat insulating block 121 installed on the inner wall of the frame 110 and a membrane member 122 installed on the heat insulating block 121 to be in contact with the liquid fuel 300 . The heat insulating block 121 may be formed on the inner wall of the frame 110 as one layer or a plurality of layers. The heat insulating block 121 may be made of, for example, polyurethane foam. A barrier such as a triplex may be formed between the layers of the heat insulating block 121.

The reinforcing member 130 includes a side reinforcement member 131 vertically installed on a side wall of the frame 110, a bottom reinforcement member 132 provided on an outer wall of the bottom surface of the frame 110, And an upper surface reinforcing member 133 provided on the upper surface of the upper surface. The reinforcing member 130 will be described later with reference to FIGS. 4 to 6. FIG. 2 is a pipe 112 for supplying the liquid fuel 300 into the frame 110 or supplying the liquid fuel 300 inside the frame 110 to the engine or the like, Reference numeral 113 denotes a tank dome member that connects the pipe 112 to the outside in a state of sealing the inner space of the frame 110 from outside.

3 is a plan view showing a sloshing prevention device constituting a stand-alone type fuel tank according to an embodiment of the present invention. Referring to FIG. 3, the sloshing prevention device 140 constitutes a flexible surface on the flow surface of the liquid fuel 300, suppresses the flow movement of the liquid fuel 300, and prevents sloshing .

Sloshing refers to the behavior of a fluid that causes a strong impact on the inner wall of a fuel tank as the liquid fuel continues to receive kinetic energy due to the movement of the hull, thereby rapidly shaking the liquid fuel having a free surface. The sloshing phenomenon caused by the liquid fuel may cause breakage of the fuel tank storing the liquid fuel.

The sloshing prevention device 140 includes a plurality of float 141 floating on the liquid fuel 300 inside the frame 110 and a connecting member 142 connecting adjacent floats 141 do. The float 141 may be formed of a polymer material including any one of a phenol resin, a melamine resin, and a synthetic resin thereof, which can maintain its shape even at a cryogenic temperature at which the liquid fuel 300 maintains a liquid phase. The connection member 142 may be a wire, a rope, a cable, or the like. The sloshing prevention device 140 is provided with an open portion 143 in which the floating body is not present at the position where the pipe 112 through which the liquid fuel 300 is to be passed and is empty.

4 is a cross-sectional view taken along line B-B 'of the independent fuel tank shown in FIG. 2 and 4, the side reinforcement member 131 is formed as a vertically oriented rectangular column and has a shape corresponding to the side wall of the side surface of the holder 200. As shown in FIG. Four side coupling members 210 are provided on the inner wall edge of the holder 200 so that the independent fuel tank 100 is vertically slidably coupled to the side surface of the holder 200 through the side reinforcing members 131, Respectively. The independent fuel tank 100 is slidably coupled in the vertical direction in a state in which the side surface of the side reinforcing member 131 located on the end side of the frame 110 is in contact with the engaging surface 211 of the side surface engaging member 210, 200.

5 is a cross-sectional view taken along line C-C 'of the self-contained fuel tank shown in FIG. 2; 5, the bottom surface reinforcing member 132 is formed as a square pillar in the left-right direction and has a shape corresponding to the inner surface of the bottom surface of the holder 200. As shown in Fig. A bottom surface engaging member 220 protruding inwardly from an inner side wall of the holder 200 is formed along the periphery of the holder 200 so that the bottom surface reinforcement member 132 is inserted and supported on the inner surface of the bottom surface of the holder 200 do.

The bottom joint member 220 has a shape corresponding to the bottom surface reinforcement member 132. For example, the bottom surface engaging member 220 may be formed to extend from the side surface inner wall of the holder 200 so as to have an area equal to or slightly larger than the entire area of the bottom surface reinforcing member 132. The bottom reinforcement member 132 is inserted into the bottom surface engaging member 220 in a state where the side surface portion of the bottom surface reinforcing member 132 is in contact with the inner wall 221 of the bottom surface engaging member 220, .

According to the embodiment of the present invention, since the low temperature liquid fuel 300 is insulated by the heat insulating member 120 installed on the inner wall of the frame 110, the reinforcing member 130 provided on the outer wall of the frame 110 The influence of the low-temperature liquid fuel 300 can be reduced. Therefore, it is unnecessary to use expensive stainless steel as a reinforcing member to withstand the low temperature of the liquid fuel 300, and the load supporting force of the independent fuel tank 100 is reinforced by using a relatively low-cost general steel as the reinforcing steel It is possible to reduce the installation cost of the stand-alone fuel tank 100 and the vessel 10. [

According to the embodiment of the present invention, the reinforcing member 130 is prevented from being contracted by the low-temperature liquid fuel 300, the load supporting design considering the contraction of the reinforcing member 130 is unnecessary, The complexity of the support structure design in applying the adiabatic system can be avoided, so that the design flexibility is secured. In addition, since the sloshing phenomenon of the liquid fuel is suppressed by the sloshing prevention device 140 for suppressing the fluid behavior, the fuel can be always supplied (any filling).

In addition, according to the embodiment of the present invention, the fuel tank 100 can be independently manufactured and assembled independently of the structure of the ship, and the reinforcing member 130 can hold the load-supporting function and the independent fuel tank 100 The independent fuel tank 100 can be attached to the vessel 10 without providing a separate supporting structure for supporting the vessel 200 between the vessel 200 and the fuel tank 100. [ It can be installed in the holder 200. In addition, by forming the reinforcing member 130 of the independent fuel tank 100 in a shape corresponding to the hold structure by using the holding structure of the vessel 10, the independent fuel tank 100 can be efficiently And can be easily adapted to fit-in LNG fuel tanks.

6 is a plan view showing a stand-alone fuel tank according to another embodiment of the present invention. In the embodiment shown in FIG. 6, the same or corresponding components to those of the embodiment shown in FIG. 2 and FIG. 4 may be omitted. 6, a plurality of side coupling members 210 are formed on the inner wall of the holder 200 so that the independent fuel tank 100 is slidably coupled to the side of the holder 200 through the side reinforcing members 131 in the vertical direction. Are formed in the vertical direction. The independent fuel tank 100 is slidably engaged along the coupling groove 212 in which the side reinforcing member 131 is formed between the side coupling members 210 by the adjacent two side coupling members 210 of the hold 200 And is installed in the holder 200. The stand-alone fuel tank 100 is fixed in position in the horizontal direction by the coupling force between the side reinforcing member 131 and the side coupling member 210.

FIG. 7 is a plan view showing a stand-alone type fuel tank according to another embodiment of the present invention, and FIG. 8 is a sectional view taken along line D-D 'of the stand-alone type fuel tank shown in FIG. In the embodiment shown in FIGS. 7 to 8, the same or corresponding components to those of the embodiment shown in FIG. 2, FIG. 4, or FIG. 6 may be omitted. 7, the side reinforcing member 131 is provided as a trapezoidal column, and the independent fuel tank 100 is slidably coupled to the side surface of the holder 200 through the side reinforcing member 131 in the vertical direction. A plurality of side coupling members 210 provided in a trapezoidal column on the inner wall of the holder 200 are formed in the vertical direction.

The coupling grooves 212 are formed between the side coupling members 210 by the adjacent two side coupling members 210 of the hold 200. The side reinforcing member 131 slides along the engaging groove 212 while the inclined surface 131a of the side reinforcing member 131 contacts the inclined surface 213 of the side coupling member 210. The independent fuel tank 100 is attached to the side reinforcing member 131, Is fitted in the holder (200) as it is slidably engaged along the engaging groove (212). The stand-alone fuel tank 100 is fixed in position in the horizontal direction by the coupling force between the side reinforcing member 131 and the side coupling member 210.

8, a bottom surface reinforcing member 132 is provided as a trapezoidal column, and a bottom surface engaging member 220 in which a bottom surface reinforcing member 132 is inserted is formed in an inner wall of a bottom surface of the holder 200 in a horizontal direction . The bottom joint member 220 has a guide groove 222 formed between the first inclined surfaces 223 having a downwardly curved sectional shape. The bottom reinforcement member 132 has a shape corresponding to the guide groove so as to be inserted into the guide groove 222 provided on the inner wall of the bottom surface of the holder 200. The bottom reinforcement member 132 has the second inclined surface 132a so as to have a sectional shape that is reduced downward corresponding to the first inclined surface 223.

9 is a plan view showing a stand-alone fuel tank according to another embodiment of the present invention. In the embodiment shown in FIG. 9, the same or corresponding components to those of the embodiment shown in FIG. 2, FIG. 4, and FIG. 6 to FIG. 8 may be omitted. 9, the side reinforcing member 131 is provided as a column having a semicircular sectional shape, and the independent fuel tank 100 is provided on the side surface of the holder 200 through the side reinforcing member 131, A plurality of side coupling members 210 provided in the inner wall of the holder 200 as pillars corresponding to the spaces between the side reinforcing members 131 are formed in the vertical direction.

The coupling grooves 212 are formed between the side coupling members 210 by the adjacent two side coupling members 210 of the hold 200. The independent fuel tank 100 is installed in the holder 200 as its side reinforcing member 131 is slidably engaged along the coupling groove 212 of the holder 200. [ The stand-alone fuel tank 100 is fixed in position in the horizontal direction by the coupling force between the side reinforcing member 131 and the side coupling member 210.

10 is a plan view showing a stand-alone fuel tank according to another embodiment of the present invention. In the embodiment shown in FIG. 10, the same or corresponding components to those of the embodiments shown in FIGS. 2, 4, and 6 to 9 may be omitted. Referring to FIG. 10, the side reinforcing member 131 is formed as a column having a T-shaped section in the vertical direction. Four side coupling members 210 are provided on the inner wall edge of the holder 200 so that the independent fuel tank 100 is vertically slidably coupled to the side surface of the holder 200 through the side reinforcing members 131, Respectively. The independent fuel tank 100 is slidably coupled in the vertical direction with the side surface of the side reinforcing member 131 located on the end side of the frame 110 in contact with the inner wall of the side coupling member 210, do.

11 is a longitudinal sectional view of a stand-alone fuel tank according to another embodiment of the present invention. 11, the stand-alone fuel tank 100 includes a partition member 160 which is vertically installed in the frame 110 and separates the internal space 111 of the frame 110 into a plurality of spaces . According to this embodiment, the sloshing phenomenon of the liquid fuel 300 can be dispersed through the internal spaces separated by the plurality of the independent fuel tanks 100 without the sloshing prevention device. Therefore, it is possible to secure the required anyfilling function at all times in the independent fuel tank and to prevent breakage by sloshing.

In the above embodiments, the reinforcing member 130 has been described by taking a square pillar, a semicircular pillar, a semi-elliptical pillar or a T-shaped pillar as an example, but the reinforcing member 130 may be modified into various shapes not shown. It is to be understood that the above-described embodiments are provided to facilitate understanding of the present invention, and do not limit the scope of the present invention, and it is to be understood that various modifications are possible within the scope of the present invention. It is to be understood that the technical scope of the present invention should be determined by the technical idea of the claims and the technical scope of protection of the present invention is not limited to the literary description of the claims, The invention of the present invention.

10: Ship 20: Hull
100: stand-alone fuel tank 110: frame
111: internal space 112: pipe
113: tank dome member 120: heat insulating member
121: Insulation block 122: Membrane member
130: reinforcing member 131: side reinforcing member
131a, 132a, 213, 223: sloped surface 132: bottom surface reinforcing member
133: upper surface reinforcing member 140: sloshing preventing member
141: float 142: connecting member
143: opening portion 160: partition wall member
200: Hold 210: Side coupling member
211: coupling surface 212: coupling groove
220: bottom engaging member 222: guide groove
300: liquid fuel

Claims (13)

1. A stand-alone fuel tank for storing fuel required for a ship in a liquid state and being installed in an independent structure in a hold of a ship,
A frame forming an inner space for storing the liquid fuel;
A heat insulating member installed on an inner wall of the frame to heat the liquid fuel; And
And a reinforcing member provided on an outer wall of the frame to reinforce a load supporting force of the frame,
The reinforcing member
A side reinforcing member installed on the side wall of the frame in a vertical direction; And
And a bottom reinforcement member provided on an outer wall of a bottom surface of the frame,
Wherein the side reinforcement member is slidably coupled along the coupling groove between the side coupling members provided on the inner side wall of the holder in the up and down direction,
Wherein the bottom surface reinforcing member has a shape corresponding to the guide groove so as to be inserted into a guide groove provided in an inner wall of a bottom surface of the holder. The method according to claim 1,
The heat insulating member
A heat insulating block installed on an inner wall of the frame; And
And a membrane member installed on the heat insulating block in contact with the liquid fuel. The method according to claim 1,
Further comprising a sloshing prevention device provided in an inner space of the frame to prevent sloshing of the liquid fuel. The method of claim 3,
The sloshing prevention device includes:
A plurality of floats floating in the liquid fuel inside the frame; And
And a connecting member connecting the adjoining sub-fluids. The method according to claim 1,
Further comprising: a partition member installed vertically inside the frame to divide an internal space of the frame into a plurality of spaces. delete The method according to claim 1,
Wherein the side reinforcing member has a shape corresponding to a side wall of the side wall of the holder. The method according to claim 1,
Wherein the bottom surface reinforcing member has a shape corresponding to an inner bottom wall of the holder. 9. The method of claim 8,
Wherein the guide groove and the bottom surface reinforcing member are made of a metal,
Wherein the inclined surface has a cross-sectional shape that is reduced downward. 6. The method according to any one of claims 1 to 5,
The reinforcing member
And at least one of a square pillar, a semicircular pillar, a semi-elliptical pillar, and a T-shaped pillar. And a stand-alone fuel tank installed in a separate structure in the hold for storing the fuel required for the ship in a liquid state,
The stand-alone type fuel tank includes:
A frame forming an inner space for storing the liquid fuel;
A heat insulating member installed on an inner wall of the frame to heat the liquid fuel; And
And a reinforcing member provided on an outer wall of the frame to reinforce a load supporting force of the frame,
The reinforcing member
A side reinforcing member installed on the side wall of the frame in a vertical direction; And
And a bottom reinforcement member provided on an outer wall of a bottom surface of the frame,
Wherein the side reinforcement member is slidably coupled along the coupling groove between the side coupling members provided on the inner side wall of the holder in the up and down direction,
Wherein the bottom reinforcement member has a shape corresponding to the guide groove so as to be inserted into a guide groove provided in an inner wall of a bottom surface of the holder. delete 12. The method of claim 11,
The holding means
A guide groove having a first inclined surface is formed so as to have a sectional shape that is downwardly reduced on the inner surface of the bottom surface,
The bottom reinforcement member
And a second inclined surface having a shape corresponding to the guide groove to be inserted into the guide groove and having a sectional shape reduced downward corresponding to the first inclined surface.

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