KR20170037081A - Water curtain equipment and marine structure including the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water curtain facility and a ship having the water curtain facility, wherein the water curtain facility comprises: a facility space provided on a cargo manifold of a ship or a upper deck around a connection portion of a loading arm; A water barrier provided to surround the facility space and installed at least in a side opening direction of the ship; And a water curtain device installed on the upper deck within the facility space and spraying a fluid to the facility space to prevent the upper deck and the outer sheath of the ship from being damaged from the liquid cargo.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water curtain and a vessel having the water curtain,

The present invention relates to a water curtain facility and a ship having the water curtain facility.

Natural gas is a fossil fuel containing methane as a main component and a small amount of ethane, propane, and the like, and has recently been regarded as a low-pollution energy source in various technical fields.

Natural gas is transported in a gaseous state through land or sea gas pipelines, or is transported to a remote location where it is stored in an LNG carrier in the form of liquefied natural gas (LNG). Liquefied natural gas is obtained by cooling natural gas at a cryogenic temperature (below about -163 ° C), and its volume is reduced to about 1/600 of that of natural gas, making it well suited for long-distance transport through the sea.

Liquefied natural gas carriers are equipped with storage tanks (also known as 'cargo holds') that can store and store liquefied natural gas that is liquefied by cooling natural gas. Since the boiling point of liquefied natural gas is about -162 ° C at atmospheric pressure, the storage tank for liquefied natural gas is a material that can withstand extremely low temperatures such as aluminum, stainless steel and 35% nickel steel to safely store and store liquefied natural gas. And is designed to have a structure resistant to thermal stress and heat shrinkage and to prevent heat penetration.

LNG RV (Regasification Vessel), which transports LNG carriers and LNG for unloading LNG to land customers by landing LNG and landing on land, reclaiming stored LNG after arriving at land demand and unloading it into natural gas, Includes floating storage facilities such as LNG FPSO (Floating, Production, Storage and Offloading) and LNG FSRU (Floating Storage and Regulation Unit) storage tanks installed in LNG carriers or LNG RVs.

As such, the offshore structures such as the LNG carrier, the LNG RV, the LNG FPSO, and the LNG FSRU can be loaded into the cargo manifold or the loading arm (loading) to load or unload the liquid cargo such as LNG from the storage tank. arm is installed.

When loading or unloading a liquid cargo such as LNG, unwanted liquid cargo leaks into the hull shell of the offshore structure frequently. Particularly, there is provided a water curtain device for preventing liquid cargo from leaking to the outer shell of the cargo manifold or the surrounding of the loading arm to damage the outer shell of the ship.

The conventional water curtain apparatus is provided with a structure in which a guide plate is attached to a pipe for spraying, so that the cost of materials is increased. In addition, since the water curtain apparatus is installed close to the outside plate, There is a problem that a lot of air which has been demolished and reinstalled is generated at the city, and a guide plate structure is formed.

Korean Published Patent Application No. 10-2011-0131729 (Published on December 07, 2011)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a water curtain facility and a ship having the water curtain facility capable of reducing the material cost by simplifying the structure of the water curtain apparatus .

It is also an object of the present invention to provide a water curtain apparatus and watercurtain equipped with the water curtain apparatus which are arranged so that the water curtain apparatus is spaced inward from the outer shell of the hull so as to facilitate the installation work and the painting work.

A water curtain facility according to one aspect of the present invention includes: a facility space provided on a cargo manifold of a vessel or a upper deck around a connection portion of a loading arm, A water barrier provided to surround the facility space and installed at least in a side opening direction of the ship; And a water curtain device installed on the upper deck within the facility space and spraying a fluid to the facility space to prevent the upper deck and the outer sheath of the ship from being damaged from the liquid cargo.

Specifically, the water barrier may have a structure in which the outer plate side forming the edge of the upper deck is opened and closed to the inside of the upper deck.

Specifically, the water barrier may be connected to the gutter bar.

Specifically, the water curtain apparatus includes: a water curtain pipe installed on the upper deck within the facility space; At least one spray hole formed in the water curtain pipe for discharging the fluid flowing in the inner space of the water curtain pipe to the outside; A water supply pipe located on the upper deck and connected to the water curtain pipe to supply the fluid; And a support member fixed to the upper deck and supporting the water curtain pipe.

Specifically, the spray hole may be formed at an angle at which the fluid is injected into the facility space.

Specifically, the spray hole may be formed so as to be between an angle at which the fluid is injected in the direct downward direction with respect to the water curtain pipe, and an angle at which the fluid is injected in the water barrier wall direction provided inside the upper deck.

Specifically, the support portion includes: a pad member mounted on the upper deck; A support member installed to extend from the pad member at a predetermined height in a vertical direction; And a fixing member provided at an upper end of the supporting member and fixing the water curtain pipe.

A ship according to another aspect of the present invention is characterized by including the water curtain facility described above.

INDUSTRIAL APPLICABILITY The water curtain apparatus and the ship having the water curtain apparatus according to the present invention can reduce the material cost by constituting the water curtain apparatus with a simple structure.

In addition, the water curtain apparatus and the ship having the water curtain apparatus according to the present invention can not only facilitate the installation work of the water curtain apparatus by arranging the water curtain apparatus on the upper deck of the hull at a distance from the shell of the hull, It is possible to reduce the number of times to remove and reinstall the city.

Further, the water curtain apparatus and the ship having the water curtain apparatus according to the present invention are configured such that the fluid such as water is sprayed on the upper deck, not the outer shell of the hull, so that the fluid such as water flows downward from the upper deck to the outer deck So that not only the outer shell of the hull but also the upper deck can be protected from LNG liquids.

1 is a partial perspective view of a watercraft equipped with a water curtain facility according to an embodiment of the present invention.
2 is a top view of a water curtain facility in accordance with an embodiment of the present invention.
3 is a cross-sectional view taken along the line A-A 'in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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

2 is a plan view of a water curtain apparatus according to an embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the line A-A of FIG. 2 Sectional view taken along the line "

1 to 3, a water curtain facility 100 according to an embodiment of the present invention may be provided in a part of the ship 1. [

Specifically, the water curtain facility 100 is designed to load or unload a liquid cargo such as an LNG when the cargo manifold (not shown) or the outer plate 12 of the hull 10 around the loading arm (not shown) To prevent the liquid cargo from leaking and damaging the outside sheathing 12 of the ship 10.

Here, the vessel 1 can include an LNG transporting line for loading LNG to a land use customer by transporting a liquid cargo such as LNG to the sea, and when the LNG is loaded on the sea, Such as LNG FPSO (Floating, Production, Storage and Offloading), LNG FSRU (Floating Storage and Regasification Unit), as well as LNG RV (Regasification Vessel) A cargo manifold for loading or unloading liquid cargo such as LNG from a storage tank or an ocean structure in which a loading arm is installed.

The water curtain apparatus 100 provided in the vessel 1 may include a facility space 110, a water barrier 120, and a water curtain apparatus 130.

The facility space 110 may be provided with a predetermined area in the cargo manifold of the ship 1 where the liquid cargo may leak or in the upper deck 11 around the connection portion of the loading arm, (12) of the hull (10) forming the edge.

Such a facility space 110 may be partitioned from other facilities by installing a water barrier 120 to be described later, and a water curtain apparatus 130 to be described later may be installed therein.

The water barrier 120 may be installed along a predetermined partition line of the facility space 110 except for one side of the outer shell 12 of the hull 10 connected to the edge of the upper deck 11 of the ship 10, 110 and the side and upper sides of the hull 10 may be installed in the facility space 110 in an open form.

The jet barrier wall 120 prevents the fluid L such as water from being discharged from the water curtain apparatus 130 to be described later from flowing out to the upper deck 11 in the facility space 110, So that it can flow from the bottom to the outer shell 12 of the hull 10. That is, the water barrier 120 has a structure in which the side of the shell 12 of the hull 10 forming the edge of the upper deck 11 is opened and closed inside the upper deck 11. [

The water barrier 120 may be connected to a gutter bar 13 installed along the upper portion of the outer shell 12 of the hull 10 forming the edge of the upper deck 11 of the ship 10 in the ship 1 have.

The gutter bar 13 prevents the liquid such as rainwater and cleaning seawater from falling on the outer plate 12 of the ship 10 to fall outside the ship 1 from the upper deck 11 of the ship 1, In the present embodiment, it is not provided on the upper portion of the outer plate 12 of the hull 10 constituting one surface of the facility space 110. That is, the gutter bar 13 may be disconnected at the portion of the facility space 110, which may be followed by a water barrier 120 installed inside the upper deck 11, where the water barrier 120 Can substitute for the role of the gutter bar 13.

The water curtain device 130 can be installed on the upper deck 11 inside the facility space 110 defined by the water barrier 120 and can supply the fluid L such as water to the facility space 110 Can be disposed on the upper deck 11 of the hull 10 at a distance from the outer sheath 12 of the hull 10 so as to be able to flow to the outer sheath 12 of the hull 10.

Such a water curtain device 130 can be installed in the cargo manifold of the ship 1 or around the connecting portion of the loading arm by the water curtain device 130 when loading or unloading liquid cargo such as LNG in the ship 1 The liquid L is caused to flow from the upper deck 11 to the outside plate 12 by gravity by spraying the fluid L to the upper deck 11 of the hull 10, A spray hole 132, a water supply pipe 133 and a support portion 134 so as to prevent the hull 10 from being damaged by liquid cargo or the like even if it leaks to the outside sheathing 12 .

The water curtain pipe 131 can be supported by a support portion 134 to be described later and can be installed on the upper deck 11 in the facility space 110 and can be installed on the outer shell 12 of the hull 10, And may be formed as a straight line or a curved line.

The water curtain pipe 131 is configured such that a fluid L such as water supplied from a water supply pipe 133 to be described later can flow into the inner space 131a and the inner space 131a is communicated with the inner space 131a on the outer surface 131b At least one spray hole 132 may be formed.

In the above, lugs (not shown) may be provided on both sides of the water curtain pipe 131, and the lugs enable the water curtain apparatus 130 to be moved to another position using the lifting equipment.

The spray hole 132 serves as a nozzle for spraying the fluid L flowing in the inner space 131a of the water curtain pipe 131 to the outside. In the case of a plurality of nozzles, the spray hole 132 is formed along the longitudinal direction of the water curtain pipe 131 They may be spaced apart from each other with a predetermined gap therebetween.

The spray holes 132 are formed in the upper surface of the upper deck 11 so as to prevent the upper deck 11 and the outer deck 12 from being damaged from the liquid cargo as the fluid L is injected into the upper deck 11, And may be formed at an angle such that the fluid L is injected to the upper deck 11 of the hull 10. Specifically, the spray holes 132 are formed in such a manner that the angle between the angle at which the fluid L is injected in the direct downward direction with respect to the water curtain pipe 131 and the angle at which the fluid L is injected in the direction of the water barrier 120 installed inside the upper deck 11 To be formed in the water curtain pipe 131 as shown in Fig.

The water supply pipe 133 is located on the upper deck 11 of the hull 10 and can be connected to the water curtain pipe 131 to be connected to the inner space 131a of the water curtain pipe 131 .

This water supply pipe 133 serves to supply the fluid L from the outside to the inner space 131a of the water curtain pipe 131. [

At least one of the supporting portions 134 may be fixed to the upper deck 11 spaced a certain distance from the outer sheath 12 of the hull 10 so as to support the water curtain pipe 131. The support portion 134 may include a pad member 134a, a support member 134b, and a fixing member 134c.

The pad member 134a can be mounted on the upper deck 11 of the hull 10 in the form of a plate and a support member 134b to be described later can be extended from the plate surface in the upward direction.

The support member 134b may be provided so as to extend from the pad member 134a at a predetermined height in a direction perpendicular to the room and may have a fixing member 134c to be described later at an upper end thereof.

The fixing member 134c may be provided at the upper end of the supporting member 134b and may fix the water curtain pipe 131. [

The pad member 134a, the support member 134b, and the fixing member 134c constituting the support portion 134 may be integrated or separated.

As described above, according to the present embodiment, the water curtain apparatus 130 is constructed in a simple structure, thereby reducing the material cost.

The water curtain device 130 is disposed on the upper deck 11 of the hull 10 spaced a certain distance from the outer sheath 12 of the hull 10 so that the installation of the water curtain device 130 And it is also possible to reduce the number of times of removal and reinstallation at the time of painting work.

The present embodiment is configured such that the fluid L such as water is jetted onto the upper deck 11 rather than the outer sheath 12 of the hull 10 so that the fluid L, The upper deck 11 of the hull 10 can be protected from the LNG liquids as well as the outer deck 12 of the hull 10. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be apparent to those skilled in the art that various combinations and modifications may be made without departing from the scope of the present invention. Therefore, it should be understood that the technical contents related to the modifications and applications that can be easily derived from the embodiments of the present invention are included in the present invention.

1: Ships 10: Hull
11: Upper deck 12: Outer panel
13: Guterbar
100: Water curtain facility 110: Facility space
120: Water barrier 130: Water curtain device
131: Water curtain pipe 131a: Inner space
131b: outer surface 132: spray hole
133: water supply pipe 134:
134a: Pad member 134b: Support member
134c: Fixing member L: Fluid

Claims (8)

A facility space provided on a cargo manifold of a ship or on an upper deck around a connecting portion of a loading arm with a predetermined area;
A water barrier provided to surround the facility space and installed at least in a side direction of the vessel; And
And a water curtain device installed on the upper deck within the facility space for spraying fluid into the facility space to prevent the upper deck and the outer sheath of the ship from being damaged from the liquid cargo. The water damper according to claim 1,
Wherein the outer plate side forming the edge of the upper deck is opened and closed to the inside of the upper deck. The water damper according to claim 2,
Wherein the water curtain is connected to a gutter bar. The water curtain system according to claim 1,
A water curtain pipe installed on the upper deck within the facility space;
At least one spray hole formed in the water curtain pipe for discharging the fluid flowing in the inner space of the water curtain pipe to the outside;
A water supply pipe located on the upper deck and connected to the water curtain pipe to supply the fluid; And
And a support portion fixed to the upper deck to support the water curtain pipe. 5. The spray gun as claimed in claim 4,
Wherein the fluid is formed at an angle at which the fluid is injected into the facility space. 5. The spray gun as claimed in claim 4,
Wherein the water curtain pipe is formed such that an angle between the angle at which the fluid is jetted in the direct downward direction with respect to the water curtain pipe and an angle at which the fluid is jetted in the direction of the water barrier provided inside the upper deck. 5. The apparatus according to claim 4,
A pad member mounted on the upper deck;
A support member installed to extend from the pad member at a predetermined height in a vertical direction; And
And a fixing member provided at an upper end of the supporting member and fixing the water curtain pipe. A watercraft equipped with the water curtain facility according to any one of claims 1 to 7.

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