KR101229134B1 - Tank for storage and carriage liquefied gas - Google Patents

Abstract

The present invention relates to a stand-alone liquefied gas storage and transport tank that can significantly reduce the weight by reducing the material input during the production of the liquefied gas storage and transport tank as well as manufacturing costs.
The independent liquefied gas storage and transport tank as described above, the outer plate is formed by attaching a plurality of corrugated plate formed with a plurality of corrugations in a tank shape; A plurality of internal aggregates attached to the ridges of the pleats so as to be located inside the outer plate; An insulating material surrounding the outer plate to block heat conduction between the inside and the outside of the outer plate; And a plurality of strong beams installed at regular intervals on the inner surface of the outer plate in the longitudinal direction of the corrugated plate so as to be perpendicular to the plurality of inner aggregates.

Description

Tank for storage and carriage liquefied gas

The present invention relates to a stand-alone liquefied gas storage and transport tank, and more particularly, a stand-alone type that can significantly reduce the weight, as well as reduce the production cost by reducing the material input during the production of the liquefied gas storage and transport tank. A tank for liquefied gas storage and transportation.

Hereinafter, a background art and a problem thereof will be described with reference to the accompanying drawings.

1A is a perspective view illustrating a general liquefied gas storage and transportation tank, and FIG. 1B is an enlarged view of A of FIG. 1A.

Referring to FIGS. 1A and 1B, a general liquefied gas storage and transportation tank 1 includes an outer plate 10 formed by attaching a plurality of flat plates in a tank shape, and attached to the inner surface of the outer plate 10 at regular intervals. A plurality of inner aggregates 11, a heat insulating material 15 surrounding the outer plate to block heat conduction between the inside and the outside of the outer plate 10, and the outer plate 10 to be perpendicular to the plurality of inner aggregates 11. It consists of a plurality of strong beams 12 are installed on the inner surface of the predetermined intervals, and the vertical partition wall 16 is attached to the upper and lower ends of the inner surface and the inner surface of the upper plate of the outer plate 10.

Figure 1c is a bending moment diagram of the outer plate by the internal pressure of the tank for storage and transportation of liquefied gas in general, Figure 1d is the effective width of the outer plate by the cross section of the inner aggregate and the leaf edge by the internal pressure of the tank for storage and transportation of liquefied gas in general It is a decrease.

1A to 1D, a tank for storing and transporting a liquefied gas in general has an outer plate formed simply in a flat plate shape to generate a bending stress 100 as shown in FIG. 1C, thereby providing an installation interval of the internal aggregate 11. It should normally be arranged to be less than 1m. Therefore, the installation intervals of the inner aggregate 11 relatively belongs to the narrow side, as well as the installation interval of the strong beam 12 also belongs to the narrow side, the inner aggregate 11 and the strong beam installed during the production of the tank for storage and transportation of liquefied gas As the number of (12) increases, it becomes a factor which raises the manufacturing cost of liquefied gas storage and transportation tank.

In addition, in the general liquefied gas storage and transportation tank 1, as shown in FIG. 1D, the outer plate 10 is formed in the form of a flat plate, so that the stress distribution 101 is not uniform, and leaflets are attached to the outer plate 10. A phenomenon occurs that the strength and stiffness of the liquefied gas storage and transport tank 10 has been reduced.

Accordingly, an object of the present invention is to convert the bending stress generated in the outer shell by the inner pressure into a toric stress or to greatly reduce the bending stress and increase the height of the internal aggregate without changing the height of the tank for storing and transporting liquefied gas. Stand-alone liquefied gas storage and transportation that can increase the strength and stiffness of the aggregate and significantly reduce leaflet phenomena at the same time by increasing the spacing of the aggregate and the installation of strong beams compared to conventional liquefied gas storage and transportation tanks. To provide a tank.

The present invention for achieving the above object, the outer plate is formed in the form of a corrugated plate to have a plurality of raised portions inwardly of the tank;
A plurality of internal aggregates attached to the peaks of the outer plate and installed in a longitudinal direction perpendicular to the wrinkle direction of the outer plate;
It is installed in plurality in the longitudinal direction orthogonal to the corrugation direction of the outer plate and is installed in a plurality, and is attached in a state standing on the inner surface of the outer plate so as to cross orthogonal to the ridge and the inner aggregate of the outer plate, generated in the pleat direction of the outer plate Strong beams to reduce bending moments;
An inner reinforcing member attached to a side of the lower end of the strong beam so as to be adjacent to the peak of the outer plate;
An outer reinforcement member having an end portion attached to the opposite valley portion of the outer portion of the outer plate and extending to the outside of the outer plate, and a horizontal member connected to the other end of the vertical member and extending in parallel with the strong beam; And
And a heat insulating material surrounding the outer surface of the outer plate to block heat conduction between the inside and the outside of the outer plate.

Here, the wrinkles of the outer plate is preferably corrugated so that the cross-sectional shape is any one selected from Concave tile, arc, semicircle, semi-elliptic, trapezoidal, polygonal.

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As described above, in the independent liquefied gas storage and transportation tank according to the present invention, the outer shell is corrugated so that the bending moment generated in the outer shell by the internal pressure of the liquefied gas storage and transportation tank is converted into a hoop stress. In the case of dark key, semi-circle and semi-ellipse, not only the bending stress is greatly reduced (when the outer shell is trapezoidal or polygonal) but also the height of the inner aggregate is increased by the corrugation height of the outer shell compared to the general liquefied gas storage and transportation tank. In addition, the stress distribution of the outer shell is more uniform than the stress distribution of the outer shell of the tank for storing and transporting a liquefied gas, in which the outer shell is formed into a flat plate and a shear delay occurs.

Thus, the strength of the outer shell and inner aggregate increases, so that the spacing of the inner aggregate and the spacing of the strong beam can be widened compared to the tanks for storing and transporting liquefied gas, which reduces the number of inner aggregates and strong beams, Not only does the bending occur, but the buckling strength is increased, thereby reducing the manufacturing cost of the standalone liquefied gas storage and transportation tank, and the weight of the liquefied gas storage and transportation tank, which is expensive in material cost, is very useful. It is an invention.

Figure 1a is a perspective view for explaining a general liquefied gas storage and transport tank
FIG. 1B is an enlarged view of A of FIG. 1A
Figure 1c is a bending moment of the outer shell due to the internal pressure of the tank for storing and transporting liquefied gas in general
Figure 1d is a reduction of the effective width of the outer plate by the cross-section of the internal aggregate and leaflet edge due to the internal pressure of the tank for storing and transporting liquefied gas in general
Figure 2 is a perspective view for explaining the structure of the tank for storing and transporting liquefied gas according to the present invention
3 is an enlarged view of B of FIG. 2;
Figure 4a is a view for explaining a state in which the internal reinforcing material is attached to the strong beam according to an embodiment of the present invention
Figure 4b is a view for explaining a state in which the internal reinforcing material is attached to the strong beam according to another embodiment according to the present invention
5 is another view for explaining a state in which the internal reinforcing material is attached to the strong beams
Figure 6a is a view for explaining a state in which the outer reinforcing material is attached to the outer plate according to an embodiment of the present invention
Figure 6b is a view for explaining a state in which the external reinforcing material is attached to the outer plate according to an embodiment of the present invention
7 is another view for explaining a state that the external reinforcing material is attached to the outer plate
Figure 8a is a circular ring distribution of the outer shell by the pressure inside the tank for storing and transporting liquefied gas according to an embodiment of the present invention
Figure 8b is a circular ring distribution of the outer shell by the pressure inside the tank for liquefied gas storage and transportation according to another embodiment according to the present invention
9 is a view showing the bending moment of the internal aggregate generated by the pressure inside the tank for storing and transporting liquefied gas according to the present invention
Figure 10a is a cross-sectional view of the inner aggregate and the inner aggregate direction stress distribution of the outer shell according to an embodiment of the present invention
10b is a cross-sectional view of the inner aggregate and the inner aggregate direction stress distribution of the outer plate according to another embodiment according to the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, the same reference numerals are given to the same parts as those of the conventional liquefied gas storage and transport tanks.

Figure 2 is a perspective view for explaining the structure of the independent liquefied gas storage and transport tank according to the present invention, Figure 3 is an enlarged view of B of Figure 2, Figure 4a is a strong beam according to an embodiment according to the present invention 4B is a view for explaining a state in which the internal reinforcing material is attached, Figure 4b is a view for explaining a state in which the internal reinforcing material is attached to the strong beam according to another embodiment according to the present invention, Figure 5 is an internal reinforcing material in the strong beam Another diagram for explaining the attached state, Figure 6a is a view for explaining a state in which the external reinforcing material is attached to the outer plate according to an embodiment according to the present invention, Figure 6b according to an embodiment according to the present invention FIG. 7 is a view for explaining a state in which an external reinforcing material is attached to an outer plate, and FIG. 7 is another view for explaining a state in which an external reinforcing material is attached to an outer plate.

2 to 7, the independent liquefied gas storage and transport tank 1 according to the present invention includes an outer plate 10, a plurality of internal aggregates 11, a thermal insulation material 15, and a plurality of strong beams 12. It is composed.

The outer plate 10 of the independent liquefied gas storage and transportation tank 1 according to the present invention constituted as described above is formed by attaching a plurality of corrugated plates 100 having a plurality of corrugations in a tank shape. That is, the outer plate 10 according to the present invention forms a plurality of peaks 102 raised up to the inside of the tank.

Here, the wrinkle of the corrugated plate 100 is most preferably formed in the shape of the front cross-section (Concave tile), but also in the form of any one selected from arc (Arc), semi-circular, semi-elliptic, trapezoidal, polygonal. Can be formed.

The plurality of internal aggregate 11 is formed in the shape of 'T' or 'L' shape is attached to the bottom portion of the vertical member 102 of the corrugation so as to be located inside the outer plate (10).
In other words, the inner aggregate 11 attached to the peak of the outer plate 10 is installed in the longitudinal direction orthogonal to the pleat direction of the outer plate 10.

The heat insulating material 15 surrounds the outer plate 10 to block heat conduction between the inside and the outside of the outer plate 10.

The plurality of strong beams 12 are installed at a predetermined interval on the inner surface of the outer plate 10 in the longitudinal direction of the corrugated plate 100 to be perpendicular to the plurality of inner aggregate (11).
In other words, the strong beam 12 is attached in a state standing on the inner surface of the outer plate 10 so as to cross orthogonal to the ridge 102 of the inner aggregate 11 and the outer plate 10.
In addition, a plurality of horizontal reinforcement and vertical reinforcement may be further attached to both side surfaces of the strong beam 12, wherein the lower end of the vertical reinforcement is attached to the upper surface of the horizontal member provided on the upper end of the inner aggregate 11. desirable.

In addition, the independent liquefied gas storage and transport tank according to the present invention may be located inside the outer plate 10, the inner reinforcing material 13 may be attached to the side portion of the strong beam 12 adjacent to each other.

In addition, the independent liquefied gas storage and transport tank according to the present invention may be further provided with a plurality of external reinforcement 14 to be located outside the outer plate 10 instead of the internal reinforcement 13, a plurality of such The outer reinforcing member 14 is formed in a 'T' or 'L' shape so that the end of the vertical member 140 is attached to the valley portion 103 of the outer plate 10 to be located outside the outer plate 10. It is preferable to install.

In addition, the horizontal members 141 of the outer reinforcing members 14 adjacent to each other may be connected to each other and integrally formed.

In the stand-alone liquefied gas storage and transport tank 1 according to the present invention as described above, located in the outer plate 10 and adjacent to each other so as to be adjacent to the mountain portion 102 of the outer plate 10 An inner reinforcement 13 is further attached to the lower side of the side, or the reason for installing a plurality of outer reinforcement 14 to be located outside the outer plate 10 instead of the inner reinforcement 13 is weakened strong beam 12 This is to supplement the rigidity of).

In addition, the independent liquefied gas storage and transport tank 1 according to the present invention may further comprise a vertical partition 16, the upper end and the lower end is attached to the inner surface and the inner surface of the upper plate of the outer plate 10. .

Referring to Figure 2 to 10b will be described the operation and effect of the stand-alone liquefied gas storage and transport tank according to the present invention.

Figure 8a is a ring distribution distribution of the outer shell by the pressure inside the tank for independent liquefied gas storage and transportation according to an embodiment of the present invention, Figure 8b is a tank for internal liquefied gas storage and transportation according to another embodiment of the present invention Figure 9 is a stress distribution of the outer shell by the pressure, Figure 9 is a view showing the bending moment of the internal aggregate generated by the pressure inside the tank for independent liquefied gas storage and transport according to the present invention, Figure 10a is an embodiment according to the present invention Inner cross section of the inner aggregate and the inner aggregate direction stress distribution of the outer plate, Figure 10b is a cross section of the inner aggregate according to another embodiment of the present invention and the inner aggregate direction stress distribution of the outer plate.

2 to 10b, the independent liquefied gas storage and transportation tank 1 according to the present invention has a cross-sectional shape selected from concave tile, arc, semi-circle, semi-elliptic, trapezoidal, and polygonal. By attaching a plurality of corrugated plate 100 formed in any one shape in a tank shape to form an outer plate 10, as shown in Figure 9 by the internal pressure of the independent liquefied gas storage and transportation tank (1) The bending moment 106 generated at 10 is converted into a hoop stress 104 as shown in FIG. 8A (when the outer shell 10 is corrugated in a dark, semi-circular, or semi-ellipse shape) or As shown in FIG. 8B, not only the bending stress is greatly reduced (when the shell 10 is formed to be corrugated in a trapezoidal or polygonal shape), but also the height H of the internal aggregate 11 is for general liquefied gas storage and transportation. 10a and in comparison to the tank 1 As shown in FIG. 10B, the stiffness of the aggregate is increased by increasing the height (h) of the pleats of the outer plate 10, and the outer plate 10 is formed in a flat plate shape to store a general liquefied gas in which shear delay occurs. Compared to the stress distribution of the outer plate 10 of the transport tank 1, the stress distribution 105 of the outer plate 10 appears uniformly.

Thus, the independent liquefied gas storage and transportation tank 1 according to the present invention increases the strength of the outer plate 10 and the inner aggregate 11, so that the installation interval of the inner aggregate 11 and the installation interval of the strong beam 12 are general. Compared with the tank for storing and transporting liquefied gas, the number of installation of the inner aggregate 11 and the strong beam 12 is reduced, the bending of the plate generated on the outer plate 10 is not generated, and the buckling strength is increased. It is possible to reduce the production cost of the stand-alone liquefied gas storage and transport tank (1), and to reduce the weight of the liquefied gas storage and transport tank (1) expensive material costs.

And the independent liquefied gas storage and transport tank 1 according to the present invention has a disadvantage in that the rigidity of the strong beam 12 is reduced, but the interior of the outer plate 10 to reinforce the weakened strong beam 12 as described above The inner reinforcement 13 is further attached to the lower end of the side portion of the beam 12 adjacent to each other so as to be adjacent to the mountain portion 102 of the outer plate 10, or the outer plate 10 instead of the inner reinforcement 13 Complementary stiffness of the beam 12 by installing a plurality of external reinforcement 14 to be located outside of the.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(1): tank for storing and transporting liquefied gas (10): outer shell
(11): internal aggregate (12): strong beam
(13): internal reinforcement (14): external reinforcement
(15): insulation material (16): vertical bulkhead

Claims (4)

Outer plate 10 formed in the form of a corrugated plate to have a plurality of peaks 102 raised to the inside of the tank;
A plurality of internal aggregates 11 attached to the peaks 102 of the outer plate 10 and installed in a longitudinal direction orthogonal to the pleat direction of the outer plate 10;
The outer plate 10 is installed in plurality in a longitudinal direction orthogonal to the pleat direction of the outer plate 10, the outer plate 10 so as to cross orthogonal to the mountain 102 and the inner aggregate 11 of the outer plate 10. Attached to the inner surface of the strong beam 12 to reduce the bending moment generated in the wrinkle direction of the outer plate 10;
An inner reinforcing member (13) attached to the side of the lower end of the strong beam (12) to be adjacent to the peak (102) of the outer plate (10);
An end is attached to the opposite side of the valley portion 102 of the outer plate 10 and is connected to the vertical member 140 extending outward of the outer plate 10 and the other end of the vertical member 140 to the strong beam 12 External reinforcement (14) consisting of a horizontal member 141 extending in parallel with the; And
Independent liquefied gas storage and transportation tank comprising a; heat insulating material surrounding the outer surface of the outer plate 10 to block heat conduction between the inside and the outside of the outer plate 10.
The method of claim 1,
The corrugation of the outer plate 10 is a cross-sectional shape of the independent liquefied gas storage and transport characterized in that the corrugated (Concave tile), arc (Arc), semi-circular, semi-elliptic, trapezoidal, polygonal corrugated so that any one form selected. Tank.
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