KR101390854B1 - Supporting device for fluid container and fluid carrier having the same - Google Patents

Abstract

A fluid storage vessel support apparatus for a vessel is disclosed. According to an embodiment of the present invention, there is provided an apparatus for supporting a fluid reservoir provided in a hull and supporting a fluid storage vessel including an upper portion, a middle portion and a lower portion, the apparatus comprising an intermediate support unit for fixing the intermediate portion of the fluid storage vessel to the hull In the middle part, the difference in the longitudinal displacement of the hull when hogging or sagging the hull is smaller than the lower part, and the intermediate supporting unit fixes the intermediate part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fluid storage container supporting device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fluid storage container supporting apparatus and a fluid carrier including the same, and more particularly, to a fluid container supporting apparatus having improved durability and a fluid carrier including the same.

Consumption of natural gas is increasing worldwide. Natural gas is transported in the form of liquefied natural gas in the form of liquefied natural gas, which is transported in a gaseous state via land or sea gas pipelines, and is transported to a distant consumer where it is stored in an LNG carrier (especially an LNG carrier).

Liquefied natural gas is obtained by compressing and cooling natural gas at a cryogenic temperature (approximately -160 ° C), and its volume is reduced to approximately 1/600 of that of natural gas, making it well suited for long distance transportation through the sea.

In addition, as the use of fossil fuels increases, carbon dioxide emitted in large quantities is designated as one of greenhouse gas (GHG) that causes global warming phenomenon. In recent years, CCS (Carbon Capture and Storage) technology, which separates carbon dioxide from exhaust gas and stores it in an underground place such as ocean, underground, and land surface, has been emerging.

Accordingly, there has been a demand for a ship equipped with a large-capacity fluid storage container as the type of cargo to be transported by the ship is various and the transportation amount thereof is increasingly increased. It is a common practice to horizontally install the storage vessel in which natural gas or carbon dioxide is stored in the vessel. However, when the amount of cargo to be transported is increased, there is a problem that a large amount of cargo can not be shipped to a horizontal storage tank in a limited space called a ship.

Therefore, there is an attempt to vertically install a storage container for storing cargo. When the storage container is installed vertically, there is a problem that fatigue accumulates in the storage container and the support member due to hogging or sagging of the ship.

Gravity and buoyancy act on the hull floating in the water. These two forces are equal in size and opposite in direction, so they are in equilibrium with the whole of the ship, but there are parts with large gravity and parts with large buoyancy. Hogging and sagging are the deflections of the hull due to the partial unevenness of gravity and buoyancy, especially when:

Hogging refers to a state in which the longitudinal bending moment of the hull acts to generate tensile force in the upper hull and compressive force in the lower hull. Sagging, on the other hand, refers to a state in which the longitudinal bending moment of the hull acts to generate compressive force in the upper hull and tensile force in the lower hull.

Korean Unexamined Patent Application Publication No. 2010-125627 (published on Dec. 01, 2010) and Korean Unexamined Patent Application Publication No. 2012-21761 (published on Mar. 03, 2012) disclose a device for supporting a fluid storage container.

Korean Unexamined Patent Application Publication No. 2010-125627 (published Dec. 01, 2010) Korean Unexamined Patent Publication No. 2012-21761 (published on Mar. 09, 2012)

An embodiment of the present invention is to provide a fluid storage vessel holding apparatus and a fluid carrier including the fluid storage vessel holding apparatus capable of preventing the durability of the fluid storage vessel from being deteriorated due to bowing of the hull.

According to an aspect of the present invention, there is provided a fluid storage vessel support apparatus for supporting a fluid storage vessel provided in a hull and including a top portion, a middle portion and a bottom portion, Wherein the intermediate portion is smaller in displacement in the longitudinal direction of the hull when hogging or sagging the hull is smaller than the lower portion and the intermediate support unit can fix the intermediate portion.

And a lower support unit for supporting the fluid storage container and allowing movement of the lower portion of the fluid storage container.

And an elastic member provided between the intermediate support unit and the fluid storage container.

The lower support unit may include a lower displacement receiving member for receiving a displacement of the fluid storage vessel, and a bail preventing a release of the fluid storage vessel.

And an upper support unit for supporting the upper portion of the fluid storage container.

The upper support unit may include an upper displacement receiving member for receiving a displacement of the fluid storage vessel.

The upper support unit may further include a ring member for fixing an upper portion of the plurality of fluid storage vessels, and the upper displacement receiving member may be provided between the ring member and the support partition.

According to another aspect of the present invention, there is provided a hull comprising: a hull; a fluid storage vessel provided in the hull and including an upper portion, a middle portion and a lower portion; and a fluid storage vessel holding device for fixing the fluid storage vessel to the hull, The fluid storage vessel support apparatus includes an intermediate support unit for fixing the intermediate portion of the fluid storage vessel to the hull, and the middle portion has a displacement in the longitudinal direction of the hull when the hull is sagged or hung, .

A fluid storage vessel holding apparatus and a fluid carrier including the same according to an embodiment of the present invention include an intermediate support unit to securely fix the fluid storage vessel.

The fluid storage vessel supporting apparatus and the fluid carrier including the fluid storage vessel supporting apparatus according to the embodiments of the present invention can reduce the fatigue due to the bending of the hull by allowing the upper support unit and the lower support unit to make a difference in displacement of the fluid storage vessel.

FIG. 1 is a perspective view showing a state in which a fluid storage container supporting apparatus according to an embodiment of the present invention is provided on a fluid carrier. FIG.
FIG. 2 is a conceptual diagram illustrating a phenomenon of bowing of a hull due to hogging or sagging phenomenon in a fluid carrier including a fluid storage vessel holding apparatus according to an embodiment of the present invention, and changes in lengths of upper, middle, and lower portions.
3 is a perspective view showing a state in which a fluid storage container holding apparatus according to an embodiment of the present invention is applied.
4 is a cross-sectional view of a fluid storage vessel support apparatus according to an embodiment of the present invention.
5 is a view showing a state of a fluid storage container in an equilibrium state of a fluid storage container supporting apparatus according to an embodiment of the present invention.
6 is a view showing a state of a fluid storage container in a sagging state of a fluid storage container supporting apparatus according to an embodiment of the present invention.
7 is a view showing a state of a fluid storage container in a hogging state of a fluid storage container supporting apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the width, length, thickness, and the like of the components are exaggerated for convenience of explanation. Like reference numerals designate like elements throughout the specification.

FIG. 1 is a perspective view showing a state in which a fluid storage container supporting apparatus according to an embodiment of the present invention is provided on a fluid carrier. FIG.

A fluid carrier according to an embodiment of the present invention includes a hull 1 forming an outer appearance of a fluid carrier, a plurality of fluid storage vessels 10 vertically disposed in the hull 1, a plurality of fluid storage vessels 10, (100, 200, 300; see FIG. 2) for stably supporting the fluid storage container.

The hull 1 comprises a plurality of support bulkheads 20 and an accommodation space 2 defined by the support bulkheads 20 to accommodate the fluid storage vessel 10, (2).

The fluid storage vessel 10 is provided with an upper portion, a middle portion and a lower portion, and is formed in a widthwise direction of the hull 1 and a longitudinal direction of the hull 1.

FIG. 2 is a conceptual diagram illustrating a phenomenon in which a hull is bent by a hogging or sagging phenomenon in a fluid carrier including a fluid storage vessel holding apparatus according to an embodiment of the present invention, and changes in lengths of the upper portion, the middle portion, and the lower portion.

There is a central axis X at an intermediate portion of which the length is constant despite the longitudinal bending moment of the hull 1. In order to compare the length variation, if the upper shaft Y is set at the upper portion of the central axis X and the lower shaft Z is optionally set at the lower portion of the central axis X, no longitudinal bending moment is generated in the hull 1 Normally, the lengths of the central axis X, the top axis Y, and the bottom axis Z are constant a.

However, when sagging occurs, the compressive force acts on the upper part of the hull 1 and the length of the upper shaft Y is reduced to c. On the other hand, tensile force is applied to the lower part of the hull, and the length of the lower axis (Z) is increased to b.

On the contrary, when hogging occurs, tensile force acts on the upper layer of the hull 1 and the length of the upper shaft Y is increased to b. On the other hand, compressive force is applied to the lower part of the hull (1), and the length of the lower shaft (Z) decreases to c.

Since the lengths of the hulls 1 are different according to longitudinal bending moments during hogging or sagging, the fluid storage vessel 10 provided inside the hull 1 has a displacement difference between the upper and lower portions. That is, the center axis X is a virtual line in which a displacement difference does not occur in the longitudinal direction of the hull when considering the warping of the hull by the longitudinal bending moment.

The fluid storage vessel 10 is provided with heat. Since the hogging or sagging of the fluid carrier is larger in the longitudinal direction than the width direction of the hull 1, the fluid storage vessel 10 can be provided with heat adjacent to the width direction of the hull 1.

FIG. 3 is a perspective view showing a state in which a fluid storage container supporting apparatus according to an embodiment of the present invention is applied, and FIG. 4 is a sectional view of a fluid storage container supporting apparatus according to an embodiment of the present invention.

A fluid storage container supporting apparatus according to an embodiment of the present invention includes an intermediate support unit 100 for supporting a middle portion of a fluid storage container 10 by connecting the fluid storage container 10 and the hull 1, A lower support unit 200 for supporting the lower portion of the fluid storage container 10 and an upper support unit 300 for supporting the upper portion of the fluid storage container 10.

The intermediate support unit 100 is provided on the central axis X, which is an intermediate portion in which no displacement difference in the longitudinal direction occurs even when hogging or sagging of the fluid carrier.

The intermediate support unit 100 may be formed of a steel structure and the longitudinal outer side thereof may be fixed to the support bulkhead 20 and the widthwise outer side thereof may be fixed to the hull 1, And the fluid storage container 10 is inserted into the opening 110 and supported by the intermediate support unit 100. [

The intermediate support unit (100) supports the fluid storage containers (10). The opening 110 of the intermediate support unit 100 is formed in an elliptical shape elongated in the width direction of the hull 1 so that a plurality of fluid storage vessels 10 are accommodated in a single opening 110, As shown in Fig. However, the present invention is not limited to this, and the intermediate support unit 100 may be provided with an opening corresponding to each of the plurality of fluid storage containers 10, and each fluid storage container 10 may be individually accommodated in the opening.

The intermediate support unit 100 and the fluid storage vessel 10 can be directly coupled to each other by welding or using bolts and an elastic member 120 is interposed between the intermediate support unit 100 and the fluid storage vessel 10 The fluid storage vessel 10 may be movably coupled in the opening 110 of the intermediate support unit 100. [

The elastic member 120 absorbs the impact applied in the direction of the central axis X and absorbs a small amount of water around the point P where the center axis X of the hull 1 meets the centrifugal axis of the fluid storage vessel 10 It can accommodate it. Typically, rubber or the like may be used, but includes a material or member having an elastic force.

The lower support unit 200 includes a support surface 210 formed on the bottom surface of the accommodation space 2 and supporting the lower portion of the fluid storage container 10 and a support surface 210 between the fluid storage container 10 and the support surface 210 A lower displacement receiving member 220 provided to receive a displacement of the fluid storage vessel 10 by movement and a bushing 230 for restricting excessive movement of the lower portion of the fluid storage vessel 10.

The support surface 210 may be formed in a shape corresponding to the lower shape of the fluid storage container 10 so as to surround and support the fluid storage container 10. The support surface 210 may be formed in a substantially concave sphere shape, It is possible.

The lower displacement receiving member 220 movably supports the lower surface of the fluid storage container 10.

The lower displacement receiving member 220 should be able to accommodate the difference in the longitudinal displacement of the fluid carrier during hogging or sagging, while supporting the fluid storage vessel 10 at normal times. To this end, the lower displacement accommodating member 220 is fixed to the support surface 210 and the other side is made to be movable relative to the fluid storage container 10, one side is fixed to the fluid storage container 10, And may be provided so as to be movable relative to the support surface 210. Also, the lower displacement receiving member 220 may be provided so as to be movable relative to the support surface 210 and the fluid storage vessel 10, respectively.

The lower displacement receiving member 220 may be provided in the form of, for example, a wheel or a bearing.

The point P at which the center axis X of the hull 1 and the centrifugal axis of the fluid storage vessel 10 meet is defined as the center of the center of the hull 1 while supporting the lower portion of the fluid storage vessel 10, And can accommodate the difference in displacement of the lower portion of the fluid storage container 10 rotating at a small angle.

In the present embodiment, a wheel or a bearing is exemplarily described as an example of the lower displacement accommodating member 220. However, as long as the lower surface of the fluid storage container 10 is slidably supported on the support surface 210, Of course. That is, the type, installation position, or number of installation of the lower displacement accommodating member 220 does not affect the scope of right of the present invention.

The protrusion 230 is for restricting excessive flow of the fluid storage container 10 and may be configured to support the lower side surface of the fluid storage container 10 when the fluid storage container 10 moves beyond a predetermined displacement, Thereby preventing the container 10 from being detached from the lower support unit 200.

The upper support unit 300 includes a ring member 310 that receives the upper portion of a plurality of fluid storage vessels 10 arranged in a width direction and a ring member 310 that is disposed outside the ring member 310, And upper displacement receiving members 320 and 330 for supporting and supporting the displacement.

The ring member 310 is formed in an elliptical shape that is opened corresponding to the upper portion of a plurality of fluid storage vessels 10 disposed adjacent to each other in the width direction and is supported while being wrapped around the upper portion of the fluid storage vessel 10, It is possible to constrain the relative movement of a plurality of adjacently disposed fluid storage vessels 10.

In this embodiment, the ring member 310 includes the ring member 310 that receives the upper portion of the plurality of fluid storage vessels 10 arranged in the width direction, So that each upper support unit 300 supports each of the fluid storage vessels 10. As shown in FIG. The ring member 310 is removed and the upper displacement receiving member 320 or 330 is directly placed between the upper portion of the fluid storage vessel 10 and the supporting bulkhead 20 and the hull 1 to support the fluid storage vessel 10 It is also possible to do.

The upper displacement receiving members 320 and 330 may include a cylinder 320 provided between the support partition 20 and the ring member 310 and a spring 330 provided between the adjacent ring members 310, So as to accommodate the displacement of the upper portion of the fluid storage vessel 10.

The upper displacement receiving members 320 and 330 should be able to accommodate the difference in the longitudinal displacement of the fluid carrier generated during hogging or sagging while supporting the fluid storage vessel 10 at normal times. The spring 330 may include a leaf spring or a coil spring, but is not limited thereto, and may include a member utilizing an elastic force due to a change in shape. The cylinder 320 includes a member capable of absorbing a large shock while accommodating a small displacement difference without depending on a hydraulic or pneumatic type.

3 shows the spring 330 between the ring members 310 and the cylinder 320 between the ring member 310 and the support partition 20. The kind of the upper displacement receiving members 320 and 330, Or the number of mountings may be selectively applied according to need, and may include an elastic body or the like which can tolerate a difference in displacement while absorbing a shock in addition to the spring 330 or the cylinder 320. [

The upper support unit 300 may include a wheel 340 provided between the ring member 310 and the fluid storage container 10. The wheel 340 is adapted to accommodate the differential displacement in the height direction of the fluid storage vessel 10. The upper support unit 300 is partially connected to the support partition wall 20 so that the fluid storage vessel 10 is connected to the point P where the center axis X of the hull 1 meets the distal axis of the fluid storage vessel 10, A small amount of displacement in the height direction can be caused. The wheel 340 receives the displacement difference in the height direction and reduces the fatigue applied to the upper support unit 300 and the fluid storage container 10. [

The following describes the operation of the fluid storage vessel support apparatus during hogging or sagging in a fluid carrier according to an embodiment of the present invention.

FIG. 5 is a view showing a state of a fluid storage container in an equilibrium state of a fluid storage container supporting apparatus according to an embodiment of the present invention, and FIG. 6 is a cross- FIG. 7 is a view showing the state of a fluid storage container in a hogging state of a fluid storage container supporting apparatus according to an embodiment of the present invention. FIG.

The point where the intermediate support unit 100 of the fluid storage vessel 10 is installed is a portion corresponding to the center axis X of the hull. As shown in FIG. 5, in the equilibrium state, the intervals between the fluid storage vessels 10 at the upper, middle, and lower portions of the fluid storage vessel 10 are kept constant.

In the sagging state, as shown in Fig. 6, the space between the fluid storage vessels 10 is reduced due to the compressive force at the top of the fluid storage vessel 10, so that the upper displacement receiving members 320 and 330 are compressed. On the contrary, in the lower portion of the fluid storage container 10, due to the tensile force, the lower displacement receiving member 220 allows the displacement difference to increase the interval between the fluid storage containers 10. [

On the contrary, in the hogging state, as shown in Fig. 7, the gap between the fluid storage vessels 10 is increased due to the tensile force at the upper portion of the fluid storage vessel 10, so that the upper displacement receiving members 320 and 330 are pulled, In the lower portion of the vessel 10, the compressive force causes the lower displacement receiving member 220 to allow a displacement difference, thereby reducing the interval between the fluid storage vessels 10.

The intermediate support unit 100 fixes the fluid storage container 10 on the center axis X and the upper support unit 300 and the lower support unit 200 are positioned on the upper and lower sides of the fluid storage container 10. [ It is possible to improve the durability of the fluid storage container 10 because no fatigue load is generated in the fluid storage container 10 even when sagging or hogging occurs in the fluid carrier, (10) can be secured securely.

10: fluid storage vessel, 20: support bulkhead,
100: intermediate support unit, 110: opening,
120: elastic member, 200: lower support unit,
210: support surface, 220: lower displacement receiving member,
230: bump, 300: upper support unit,
310: ring member, 320: cylinder,
330: spring, 340: wheel.

Claims (8)

A fluid storage vessel support apparatus for supporting a fluid storage vessel provided in a hull and including an upper portion, a middle portion and a lower portion,
An intermediate support unit for securing an intermediate portion of the fluid storage vessel to the hull; and a lower support unit for supporting the fluid storage vessel to allow movement of the lower portion of the fluid storage vessel,
Wherein the fluid storage container is allowed to rotate about a portion supported by the intermediate support unit,
Wherein the lower support unit comprises a curved support surface corresponding to a lower end of the fluid storage container, and a lower surface of the lower surface of the fluid storage container which is interposed between the lower end of the fluid storage container and the support surface, And a lower displacement receiving member for allowing the fluid to pass therethrough. delete The method according to claim 1,
And an elastic member provided between the intermediate support unit and the fluid storage container. The method according to claim 1,
And a bail preventing a release of the fluid storage vessel. The method according to claim 1,
Further comprising an upper support unit for supporting said upper portion of said fluid storage vessel. 6. The method of claim 5,
Wherein the upper support unit comprises an upper displacement receiving member for receiving a displacement of the fluid storage vessel. The method according to claim 6,
Wherein the upper support unit further comprises a ring member for fixing an upper portion of the plurality of fluid storage containers,
Wherein the upper displacement receiving member is provided between the ring member and a support bulkhead formed on the hull. The hull,
A fluid storage vessel provided in the hull and including an upper portion, a middle portion and a lower portion;
And a fluid storage vessel support device for securing the fluid storage vessel to the hull,
The fluid storage vessel support apparatus comprising an intermediate support unit for securing the intermediate portion of the fluid storage vessel to the hull and a lower support unit for supporting the fluid storage vessel and allowing movement of the lower portion of the fluid storage vessel, ,
Wherein the fluid storage container is allowed to rotate about a portion supported by the intermediate support unit,
Wherein the lower support unit comprises a curved support surface corresponding to a lower end of the fluid storage container, and a lower surface of the lower surface of the fluid storage container which is interposed between the lower end of the fluid storage container and the support surface, And the lower displacement receiving member.

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