WO2011074926A2

WO2011074926A2 - Twin-hulled lng floater

Info

Publication number: WO2011074926A2
Application number: PCT/KR2010/009103
Authority: WO
Inventors: 이재익; 선재욱; 최영달; 김호경
Original assignee: 에스티엑스조선해양 주식회사
Priority date: 2009-12-18
Filing date: 2010-12-20
Publication date: 2011-06-23
Also published as: RU2497711C1; CN102101520B; WO2011074926A3; BRPI1011115A2; CN102101520A; SG172573A1; KR101122350B1; MY160175A; KR20110070133A; WO2011074926A4

Abstract

The present invention relates to a twin-hulled LNG floater, comprising: an LNG hull body (10) having a first ballast tank (11) where ballast water is held; a floatation body (20) which floats on the surface of the sea to the side adjacent but with a predetermined spacing from the LNG hull body (10), and which is provided with a second ballast tank (21) where ballast water is held; and liquefaction equipment (30) of which one end is supported connected to the LNG hull body (10) and the other end is supported connected to the floatation body (20). Consequently, the floatation body is provided to the side adjacent to the LNG hull body in such a way that the liquefaction equipment is supported connected to these bodies while at the same time the liquefaction equipment can be kept horizontal and can also be supported in a stable fashion by means of a water-level adjusting means on the floatation body, and hence the present invention basically gives advantageous effects such as that it improves the stability of the LNG floater as a whole through the twin-hulled arrangement employing the LNG hull body and the floatation body and, additionally, it allows for easy and rapid installation of liquefaction equipment without remodelling existing LNG vessels.

Description

Catamaran LNC Plotter

The present invention relates to a twin-linear L-engine plotter, and more specifically, to provide a floating body on the adjacent side of the L-engine hull to be connected to the liquefaction equipment on them to support the liquefaction equipment horizontally through the level control means of the floating body In order to ensure stable support while maintaining the stability, the stability of the entire LENG Plotter is improved by the catamaran method using the LENG hull and the floating body. It relates to a twin-linear L-engine plotter.

In general, LNG Floater (LNG Floating Storage and Production Facility) refers to a marine facility having a facility for producing LNG or Natural Gas on a float in the form of a barge.

The LNG Floater has a different arrangement of the upper equipment depending on the shape of the cargo hold that stores the LG. For example, when the cargo hold is a moss (MOSS), there is no sloshing problem of LNG. Although it is recognized as safe, space constraints are required to produce FPSO (floating oil production storage) to produce LENG, or to convert existing LNG ship into LNG FPSO, which requires more area than necessary.

In addition, when the cargo hold is a membrane, there are many limitations in using it as a cargo hold of an LNG plotter due to the problem of slack. Part of the cargo hold is to be changed and replaced with reinforced insulation material.

And, if the cargo hold is SPB (spb) is not expected to have a problem of slack, it is used as the cargo hold of the LENG Plotter, but the production cost compared to the membrane (Membrane) method.

On the other hand, when renovating or building existing LNG ships to make LNG plotter, the problems according to the shape of each cargo hold are as follows.

First of all, in case of Membrane, it is necessary to use a special box in which the bulkhead is installed in the middle due to the slack problem and the strength of the insulation box is increased.

And, in case of making Floater by modifying the operating LG Engineering Line, it should be reinforced by replacing LNG Insulation Box (Insulation Box) inside the cargo hold. In this case, liquefaction equipment must be installed in the middle by dividing the LNG RV into two. Therefore, the insulation box of the cargo hold is damaged when the middle is cut and welded again. Problem occurs.

And, in the case of the Moss (MOSS) type, there is a problem in that the space is too small to install the liquefaction facilities, whether new construction or renovation, the height of the heat exchanger and the column (Column) is very insufficient space to install.

In order to develop small and medium-sized gas fields, LNG plotters equipped with medium-sized liquefaction facilities are currently required in the market.

Therefore, it is expensive to build an LNG plotter, and there is an intention to remodel and use an LNG ship that has no transportation plan in the market.

The present invention has been made to solve such a problem, by providing a floating body on the adjacent side of the L-engine hull to be connected to the liquefaction equipment on them, and at the same time the liquefaction equipment horizontal through the level control means of the floating body By maintaining it stably and supporting it, it is basically a catamaran system using the LENG hull and the floating body to improve the stability of the entire LENG Plotter and to easily and quickly install the liquefaction equipment without modifying the existing LENG ship. Its purpose is to provide a catamaran LNC plotter.

The twin-linear L-engine plotter of the present invention devised to achieve this object is an L-engine hull equipped with a first ballast tank for storing the ballast water; A floating body provided with a second ballast tank floating on the sea surface of the adjacent side spaced apart from the LENG hull and storing ballast water; And an liquefaction facility having one end connected to the LENG hull and the other end connected to the floating body.

In addition, in the twin-linear L-engine plotter according to the present invention, it is preferable that the first ballast tank of the L-engine hull and the second ballast tank of the floating body is communicated by a separate communication pipe to share the ballast water. .

In addition, in the twin-linear L-engine plotter according to the present invention, it is preferable that the level control means for adjusting the water level of the ballast water in the second ballast tank of the floating body.

Further, in the twin-linear L-engine plotter according to the present invention, the water level control means, by supplying compressed air to the floating body so that the ballast water in the second ballast tank of the floating body is pushed into the first ballast tank of the L-engine hull. Air compressor; A supply pipe to which one end of the air compressor is connected and the other end thereof communicates with one side of an upper end of the floating body to supply compressed air of the air compressor to the floating body; And a discharge pipe disposed at an adjacent portion of the supply pipe to discharge air inside the floating body to the outside.

In addition, in the twin-linear L-engine plotter according to the present invention, it is preferable that the supply control valve for adjusting the supply amount of the compressed air supplied from the air compressor on the supply pipe.

In addition, in the twin-linear L-engine plotter according to the present invention, it is preferable that the discharge control valve for controlling the discharge of the compressed air of the floating body to the outside on the discharge pipe is further provided.

As described above, the catamaran linear LNC plotter according to an embodiment of the present invention is provided with a floating body on the adjacent side of the L-engine hull to be connected to the liquefaction equipment on them and at the same time liquefied through the water level control means of the floating body By allowing the equipment to be stably supported while maintaining the horizontal level, it is basically a catamaran system using the LENG hull and the floating body to improve the stability of the entire LNG plotter, and it is easy to install the liquefaction facility without modifying the existing LENG ship. The effect is to be quick.

1 is a schematic diagram illustrating a catenary linear LNC plotter according to an embodiment of the present invention.

The present invention having the above configuration will be described in more detail with reference to the following drawings.

As shown in FIG. 1, the catamaran linear LNC plotter according to an embodiment of the present invention has an LENG hull 10 equipped with a first ballast tank 11 for storing ballast water, and the LNG hull 10 is fixed with the LNG hull 10. One end is connected to the floating body 20 provided with the second ballast tank 21 for storing the ballast water and floated on the sea surface of the adjacent side spaced apart from the distance, and the other end thereof is the floating body 20. It is configured to include a liquefaction facility 30 is connected to and supported).

The first ballast tank 11 of the LENG hull 10 and the second ballast tank 21 of the floating body 20 are communicated by separate communication pipes 40 so as to share the ballast water. .

And, the water level adjusting means for adjusting the water level of the ballast water in the second ballast tank 21 of the floating body 20 is provided.

Here, the water level control means, by supplying compressed air to the floating body 20, the ballast water in the second ballast tank 21 of the floating body 20 of the first ballast tank 11 of the L-engine hull 10 The air compressor 50 is pushed into the air compressor, and one end of the air compressor 50 is connected, and the other end thereof communicates with one side of the upper end of the floating body 20 so that the compressed air of the air compressor 50 is suspended. It comprises a supply pipe 60 for supplying to the 20 and the discharge pipe 70 is disposed adjacent to the supply pipe 60 to discharge the air inside the floating body 20 to the outside.

In addition, a supply control valve 61 is provided on the supply pipe 60 to adjust a supply amount of the compressed air supplied from the air compressor 50, and further, the floating body 20 is disposed on the discharge pipe 70. Exhaust control valve 71 for adjusting the discharge amount of the compressed air to the outside is provided.

Here, the air compressor 50 is to adjust the water level of the ballast water (Ballast Water) of the floating body 20 by repeating the pressurization / decompression of the air by using a pumping system used for the existing LENG hull 10 It is preferable.

In addition, when adjusting the water level, it is preferable to use in conjunction with a tilt monitoring system (not shown) to control in consideration of the inclination of the L-engine hull (10).

The twin-linear L-engine plotter according to one embodiment of the present invention according to the above configuration floats the floating body 20 on the sea surface of the adjacent side of the L-engine hull 10 and then each ballast of the L-engine hull 10 and the floating body 20. The

tanks

11 and 21 communicate with the communication pipe 40 to share the ballast water with each other.

Then, both sides of the liquefaction facility 30 is connected to each of the upper portion of the liquefaction facility 30 is installed.

And, by connecting the supply pipe 60 and the discharge pipe 70, which is the water level control means of the ballast water to the floating body 20, by installing the air compressor 50 in the supply pipe 60, the catamaran linear EL of the present invention The plotter is completed.

The completed LNG plotter is to be able to produce LNG or natural gas through the liquefaction facility 30 in a floating state at sea.

Then, when the slope of the liquefaction equipment 30 does not fit during the production of LENG or natural gas is unstable, thereby adjusting the ballast of the floating body 20 so that the liquefaction equipment 30 is in a stable state.

That is, when the floating body 20 is located at a position higher than the L engine hull 10 and the liquefaction facility 30 is inclined toward the L engine hull 10 side, the second ballast tank 21 of the floating body 20 is provided. Since the internal air pressure is high and the ballast water is low and the floating body 20 floats, the floating body 20 and the EL hull (by operating the discharge control valve 71 of the discharge pipe 70 to discharge the air pressure to the outside). 10) can be balanced.

At this time, the supply control valve 61 of the supply pipe 60 should be kept closed.

On the contrary, when the floating body 20 is located at a position lower than the L engine hull 10 and the liquefaction facility 30 is inclined toward the floating body 20 side, the second ballast tank 21 of the floating body 20 is provided. Since the air pressure in the inside and the ballast water is high and the floating body 20 is sinking, at this time, the air compressor 50 is operated and the supply control valve 61 of the supply pipe 70 is operated to control the second ballast tank ( 21) By injecting a high pressure into the interior, the ballast water is partially introduced into the first ballast tank 11 so that the floating body 20 becomes light, so that the balance between the floating body 20 and the LENG hull 10 can be balanced. .

At this time, the discharge control valve 71 of the discharge pipe 70 should be kept closed.

As such, while the level control means is operated in real time, the liquefaction facility 30 is able to perform a gas production operation while maintaining a stable state.

In the above described a preferred embodiment of the present invention, but described in the claims and detailed description of the present invention as well as the embodiment of the present invention simply applied in combination with the known art of the present invention to those skilled in the art It is to be understood that the description of the degree to which the present invention can be simply modified is included in the technical scope of the present invention.

Claims

An L-engine hull 10 having a first ballast tank 11 for storing ballast water;

A floating body (20) provided with a second ballast tank (21) floating on the sea surface of the adjacent side spaced apart from the LENG hull (10) and storing ballast water; And

A liquefaction facility 30 having one end connected to the LENG hull 10 and the other end connected to the floating body 20 and supported;

A twin-linear LNC plotter configured to include a.
The method of claim 1,

The first ballast tank 11 of the LENG hull 10 and the second ballast tank 21 of the floating body 20 are communicated by a separate communication pipe 40 so that the ballast water can be shared with each other. A catamaran linear LCD plotter.
The method of claim 2,

And a level control means for adjusting the water level of the ballast water in the second ballast tank (21) of the floating body (20).
The method of claim 3,

The water level adjusting means,

An air compressor for supplying compressed air to the floating body 20 so that the ballast water in the second ballast tank 21 of the floating body 20 is pushed into the first ballast tank 11 of the L engine hull 10. 50);

A supply pipe 60 connected to one end of the air compressor 50 and a second end thereof connected to one side of an upper end of the floating body 20 to supply the compressed air of the air compressor 50 to the floating body 20; And

A discharge pipe 70 disposed at an adjacent portion of the supply pipe 60 to discharge air inside the floating body 20 to the outside;

Catamaran LNC plotter, characterized in that configured to include.
The method of claim 4, wherein

And a feed control valve (61) for adjusting the supply amount of the compressed air supplied from the air compressor (50) on the supply pipe (60).
The method of claim 4, wherein

Catamaran linear L-type plotter, characterized in that the discharge pipe 70 is further provided with a discharge control valve 71 for controlling the discharge amount of the compressed air discharged to the outside on the discharge pipe (70).