KR102125113B1 - Floating liquefied natural gas and liquefied natural gas carrier - Google Patents

Abstract

A liquefied gas carrier according to an embodiment of the present invention includes a liquefied gas storage tank and a liquefied gas carrier including a hull portion accommodating the liquefied gas storage tank, wherein the hull portion includes upper decks provided at upper left and right sides; A trunk deck provided above the upper deck of the liquefied gas storage tank; And a support portion provided for supporting the top side in preparation for conversion to FLNG by installing a top side treating the liquefied gas above the hull portion, and the support portion is provided on the upper side of the upper deck. It is characterized in that it forms a mooring deck is installed a mooring equipment for mooring the hull portion.

Description

Floating production and storage equipment and liquefied gas carriers {Floating liquefied natural gas and liquefied natural gas carrier}

The present invention relates to a liquefied gas floating production storage handling equipment and a liquefied gas carrier.

A ship is a means of transporting cargo by operating the sea from the origin to the destination, with various cargoes such as minerals, liquefied gas, and containers. Such ships are referred to as ordinary merchant ships.

On the other hand, floating in the ocean is the same as the ship, but there are structures that have a purpose other than the transportation of cargo, for example, a drill ship drilling the seabed, FPSO (refining, storing and unloading crude oil floating in the sea) Floating Production Storage Offloading (FSRU), a floating storage regasification unit (FSRU) that stores and vaporizes liquefied gas, and a floating liquid natural gas plant (FLNG) that produces, stores, and unloads LNG. These structures are referred to as offshore structures to distinguish them from ordinary merchant ships, and offshore structures generally have a form in which a topside, a facility for working, is mounted on top of a substructure for floating on the sea.

Recently, among various types of general commercial ships and offshore structures, ships related to natural gas have been spotlighted. Natural gas is known to be a clean fuel, and its reserves are known to be more abundant than petroleum, and its use is rapidly increasing as mining and transportation technologies are developed. It is common for the natural gas to store the main component methane in a liquid state at a temperature of -162°C or less under 1 atmosphere, and the volume of liquefied methane is about 1 in 600 of the volume of methane in the standard state of gas. , Specific gravity is 0.42, which is about half of the crude oil specific gravity.

On the other hand, natural gas is mainly stored in large quantities in the deep sea, thereby increasing the development of deep sea gas fields and the demand for floating offshore structures. Therefore, as well as liquefied natural gas carriers (LNG carriers), floating liquefied natural gas production facilities (FLNG), floating liquefied natural gas regasification facilities (LNG-FSRU, LNG-SRV) and pipelines, etc. This is happening actively.

FLNG, for example, is a marine structure with a facility for refining and liquefying natural gas extracted from the seabed, a liquefied gas storage tank for storing and unloading facilities located near a natural gas field where natural gas can be drilled. Production, processing, storage, etc. are possible, and can be moved as needed.

Since the FLNG does not need to transport and process natural gas drilled at sea to land, it can be processed in a state that can be sold directly at sea, so the effect of cost reduction is very large. Therefore, in response to the current situation of increasing interest in eco-friendly fuel, customers' needs for FLNG are increasing.

However, in the case of FLNG, after manufacturing the hull-shaped substructure, the topside, which is a facility for producing and liquefying natural gas, must be installed on the top of the substructure, which incurs great cost and materials and requires a very long drying period. .

However, as the global economy changes very rapidly, the customer's needs for FLNG can change as much as during the FLNG's drying period. In the worst case, the customer's contract for FLNG may be destroyed during the construction, causing a serious damage to shipbuilders.

Therefore, the shipbuilder is conducting numerous research and development to find a way to shorten the construction period of FLNG as much as possible to enable delivery of FLNG within the period that the customer's needs for FLNG are maintained. Did not find.

The present invention was created to improve the prior art, and an object of the present invention is to provide a liquefied gas floating production storage storage facility and a liquefied gas carrier that can be easily converted to FLNG by improving the upper structure of the hull. .

A liquefied gas carrier according to an embodiment of the present invention includes a liquefied gas storage tank and a liquefied gas carrier including a hull portion accommodating the liquefied gas storage tank, wherein the hull portion includes upper decks provided at upper left and right sides; A trunk deck provided above the upper deck of the liquefied gas storage tank; And a support portion provided for supporting the top side in preparation for conversion to FLNG by installing a top side treating the liquefied gas above the hull portion, and the support portion is provided on the upper side of the upper deck. It is characterized in that it forms a mooring deck is installed a mooring equipment for mooring the hull portion.

The liquefied gas floating production storage loading and unloading facility according to another embodiment of the present invention is characterized in that a top side is mounted on the liquefied gas carrier.

Specifically, the mooring deck may be provided higher than the upper deck.

Specifically, the mooring deck may be provided lower than the trunk deck.

Specifically, the support portion, a plurality of frames provided in the transverse direction of the hull portion; And it may include a deck portion provided on the top of the frame to support the top side.

Specifically, the frame may be in an open shape.

Specifically, the frame may be open to the outside and have a U-shape.

Specifically, a deck portion may be placed on the top of the frame, and a mooring deck may be placed on the middle opening of the frame.

Specifically, the support part, the upper end may be provided in parallel with the trunk deck.

Specifically, the hull portion may further include a side shell plate surrounding the liquefied gas storage tank from side to side.

Specifically, the hull portion may further include an inclined portion connecting the upper deck and the trunk deck.

The liquefied gas floating production storage loading and unloading facility and the liquefied gas carrier according to the present invention can improve the upper structure of the hull part and selectively convert/use the liquefied gas carrier or FLNG according to the customer's needs (required), to build the ship. It is possible to minimize the loss due to contract destruction, and shorten the drying period of the FLNG as much as possible.

In addition, the present invention, by providing a mooring deck for installing the mooring equipment on the upper side of the upper deck, it is possible to easily connect (moore) work with other vessels, the inclined trunk deck or narrow upper deck Efficient and stable installation can be achieved in preparation for the installation.

1A is a view showing a liquefied gas carrier according to a first embodiment of the present invention.
1B is a perspective view of the support of FIG. 1A viewed from the top.
2 is a view showing a state in which the moored equipment is provided in the liquefied gas carrier according to the first embodiment of the present invention.
3 is a view showing a liquefied gas carrier according to a second embodiment of the present invention.
4 is a view showing a liquefied gas carrier according to a third embodiment of the present invention.
5 is a view showing another form of the support of FIG.
6 is a cross-sectional side view showing a liquefied gas floating production storage unloading facility according to a fourth embodiment of the present invention.
7 is a cross-sectional side view showing a liquefied gas floating production storage unloading facility according to a fifth embodiment of the present invention.
8 is a cross-sectional side view showing a liquefied gas floating production storage unloading facility according to a sixth embodiment of the present invention.
9 is another sectional view showing a liquefied gas floating production storage unloading facility according to a sixth embodiment of the present invention.
10 is a cross-sectional side view showing a liquefied gas floating production storage unloading facility according to a seventh embodiment of the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments associated with the accompanying drawings. It should be noted that in this specification, when adding reference numerals to the components of each drawing, the same components have the same number as possible even though they are displayed on different drawings. In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

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

1A is a front view of a liquefied gas carrier according to a first embodiment of the present invention.

1A, the liquefied gas carrier 100 according to the first embodiment of the present invention may include a liquefied gas storage tank 110 and a hull part 120.

Hereinafter, in the present specification, liquefied gas may be used in a sense to encompass all gas fuels generally stored in a liquid state, such as LNG or LPG, ethylene and ammonia. In addition, it may be expressed as a liquefied gas for convenience when the liquid is not in a liquid state by heating or pressurization, and evaporation gas may be applied as well.

The liquefied gas storage tank 110 may have a storage space formed therein to store liquefied gas, where the liquefied gas may be cargo carried by the liquefied gas carrier 100 or may operate the liquefied gas carrier 100. It may be fuel for.

For example, when the liquefied gas is stored as cargo, the liquefied gas storage tank 110 may be provided with a line (not shown) for loading or unloading the liquefied gas. Alternatively, when using liquefied gas as fuel, the liquefied gas storage tank 110 may be provided with a liquefied gas supply line (not shown) for supplying liquefied gas to a liquefied gas consumer (not shown, may be an engine, etc.).

In addition, the liquefied gas storage tank 110 may supply liquefied gas from the liquefied gas storage tank 110 to a vaporization device (not shown) in preparation for converting the liquefied gas carrier 100 into FLNG. Lines (not shown) may be installed.

In this way, the liquefied gas storage tank 110 may be provided with a line for shipping, unloading, supply and discharge, and the like. Here, a spare line may be installed so that a plurality of lines can be installed in the liquefied gas storage tank 110 regardless of the liquefied gas carrier 100 or FLNG.

At this time, the line may be grouped into a first line and a second line, for example, the first line performs a function for the liquefied gas to escape from the liquefied gas storage tank 110, the liquefied gas carrier 100 or Depending on the functions required by FLNG, the first line can form a line for supply, discharge, and unloading to other equipment. At this time, a pump for discharging liquefied gas may be provided on the first line.

In addition, the second line performs a function for entering liquefied gas into the liquefied gas storage tank 110, and may perform functions such as shipping according to a function required by the liquefied gas carrier 100 or FLNG.

That is, a plurality of lines may be provided in the liquefied gas storage tank 110, and the lines are provided with a plurality of lines in preparation for being required by the liquefied gas carrier 100 or to convert the liquefied gas carrier 100 to FLNG. Various embodiments are possible, such as possible. Here, the FLNG may be a liquefied gas floating production storage loading and unloading facility 10 to be described later.

The liquefied gas storage tank 110 may have a different number and size of tanks depending on the size and design of the liquefied gas carrier 100, and store the liquefied gas in a liquid state to reduce the volume for efficiency of storage space. It can take the form of a pressure tank.

In addition, in the following embodiment, the liquefied gas storage tank 110 is illustrated and described as being made of one row, but is not limited thereto, and has a structure arranged in two rows identically or similarly to the FLNG, and converted to FLNG. / When using, stool, etc. can be easily arranged.

The hull part 120 accommodates the liquefied gas storage tank 110, and for this purpose, the hull part 120 includes a hull outer plate 121, and the hull outer plate 121 moves the liquefied gas storage tank 110 left and right. Surrounding can be achieved.

Here, the upper portion of the general liquefied gas storage tank 110 is formed to protrude from both sides of the hull portion 120 of the liquefied gas carrier 100, and thus may be formed higher than the upper deck 122 (upper deck) described below. In addition, in the present embodiment, various modifications are possible as the support portion 125 is formed on the upper deck 122 for structural stability when the liquefied gas carrier 100 is converted to FLNG.

Specifically, the hull unit 120 may be provided with a variety of equipment necessary for operation, a plurality of decks may be provided to divide the upper and lower spaces. At this time, the deck may include an upper deck 122 and a trunk deck 123, which may be exposed to the outside, in addition to the deck for partitioning the interior space.

The upper deck 122 may be provided on the upper left and right of the hull part 120, and as described above, the upper deck 122 may be exposed to the outside in a general liquefied gas carrier. In the embodiment according to the present invention, as can be reinforced by the support 125, various modifications are possible, which will be described later.

The trunk deck 123 may be formed between the upper decks 122 which may be provided symmetrically, and may be provided higher than the upper decks 122 above the liquefied gas storage tank 110. In addition, the shape of the bottom surface of the trunk deck 123 may be made flat or inclined downward from the center to both sides.

As such, the upper deck 122 and the trunk deck 123 may cover the upper portion of the liquefied gas storage tank 110 to prevent the liquefied gas storage tank 110 from being exposed. That is, when the liquefied gas storage tank 110 is provided in a membrane type, the hull part 120 and the liquefied gas storage tank 110 may be integrally formed. In addition, the shape of the upper deck 122 and the trunk deck 123 may be formed along the upper shape of the liquefied gas storage tank 110 forming a polygonal shape, so that the upper deck 122 and the trunk deck 123 are high. Tea may occur. This may be achieved due to a chamfer formed at the upper end of the liquefied gas storage tank 110 as the upper portion of the liquefied gas storage tank 110 forms a polygonal shape.

On the other hand, the hull portion 120 may further include an inclined portion 124 and a support portion 125A in addition to the side outer plate 121 and deck as described above, the upper deck 122 and the trunk by the inclined portion 124 The deck 123 is connected, and through the various embodiments, such as the support portion 125A provided or omitted from the inclined portion 124, the upper deck 122 may be exposed to the outside or reinforced. .

Here, the inclined portion 124 is provided to face the chamber of the liquefied gas storage tank 110, it is possible to have various forms such as being provided at a different angle or parallel to the inclination of the upper end of the liquefied gas storage tank 110. That is, the inclined portion 124 may be made of a structure connecting the trunk deck 123 and the upper deck 122 so that the liquefied gas storage tank 110 is not exposed between the trunk deck 123 and the upper deck 122. have.

The support unit 125 may be provided on the hull unit 120 so that the top side 200 is installed. The support unit 125 may be configured as follows.

First, referring to FIG. 1A, the support portion 125A of the first embodiment may be provided on the upper deck 122 on the side of the trunk deck 123. Here, the support portion 125A may be prepared to be converted to FLNG by installing a top side 200 for treating liquefied gas above the hull portion 120.

In one example, the support portion 125A, including the frame 1251 and the deck portion 1252, can reinforce the upper portion of the upper deck 122, thereby reducing the deformation of the hull due to the installation of the top side 200. Can be.

In particular, in this embodiment, the upper end of the support section 125A may be provided in parallel with the trunk deck 123 so that the height is the same as or similar to the trunk deck 123, and the outer side of the support section 125A is the lower end from the upper end. It is provided with a slope to meet the outer shell (121).

Specifically, referring to FIG. 1B, a plurality of frames 1251 may be provided in the lateral direction of the hull portion 120, and the lower side of the frame 1251 may be connected to the upper deck 122. In addition, the left and right widths of the lower surface of the frame 1251 are provided to correspond to the left and right widths of the upper deck 122, so that the load and stress transmitted from the upper portion can be distributed without being concentrated to one point.

For example, the frame 1251 may have a shape that is bent to be connected to the inclined portion 124 and the upper deck 122, or may have a shape substantially symmetrical to the shape of'a' or the lower portion thereof, so that the lower end is the upper deck 122 ), and the upper end may be connected to the inclined portion 124. At this time, the frame 1251 may have a shape in which an inner upper end is connected to the inclined portion 124, and the remaining area, that is, an inner lower end is opened toward the inclined portion 124.

In addition, the frame 1251 may have a shape in which the top surface and the side surface are inclined at an acute angle. That is, the frame 1251 may have a bent shape as described above, and the upper surface and the side surface are inclined by forming an acute shape, so that the frame protrudes from the opposite side of the inclined portion 124 to the outside of the upper deck 122 When the deck portion 1252 is installed on the frame 1251, the upper area may be expanded.

When the frame 1251 is connected to the inclined portion 124, a through hole (not shown) is formed, and there is no need to weld all the regions connected to the inclined portion 124, that is, the frame 1251. Since only the inner upper and lower ends of the welding are connected, and the opened area is omitted from welding, strength can be reinforced while minimizing work. In addition, since the through hole is formed between the frame 1251 and the inclined portion 124 through the opened area, the weight can be reduced and the worker can easily move to an adjacent space.

Here, the frame 1251, the upper surface can be placed without a step with the upper surface of the trunk deck 123, when the deck unit 1252 is installed on the frame 1251, the deck unit 1252 protrudes from the trunk deck 123 Since the height of the top side 200 can be made irrespective of the trunk deck 123 and the deck portion 1252, it is possible to uniformly manufacture a structure for manufacturing the top side 200, making it convenient to manufacture. can do.

The deck portion 1252 may be provided on the upper portion of the frame 1251 so as to be formed of a structure for supporting a passage or a support by forming a layer on the upper deck 122.

For example, the deck portion 1252 may have the same/similar plate shape as the trunk deck 123, and form an extension from the trunk deck 123 to form the top side 200 at the same height as the trunk deck 123. ).

In this way, since the support portion 125A is provided on the upper deck 122, the upper portion of the support portion 125A, the deck portion 1252 can be formed at the same height difference as the trunk deck 123, and thus the trunk deck 123 and The difficulty of installing the top side 200 due to the height difference of the upper deck 122 can be solved.

In addition, the area of the support portion 125A may have an extended shape outside of the upper deck 122 due to the deck portion 1252, so that the width of the liquefied gas carrier 100 can be extended, thereby forming a tower. The area to which the side 200 is to be installed can be secured.

In addition, referring to FIG. 1B, the supporting portion 125A may be bent at a right angle rather than an acute angle, and as shown in FIG. 2, the supporting portion 125C may be provided with a mooring equipment 130. In addition, the mooring equipment 130 may not be provided in the entire area of the support portion 125C, but may be provided in any one area.

Here, the mooring equipment 130 may be provided to be exposed from the side of the hull portion 120, for example, the outer side of the support portion 125C forms an open shape, and a horizontal bottom surface inside the opened inner side. The space to be formed may be formed and the mooring equipment 130 may be installed on an upper portion of the bottom surface. That is, the support portion 125C at a position where the mooring equipment 130 is provided may form a shape in which the outer side of the frame is opened to be'c' or symmetrical thereto, and at this time, the mooring equipment 130 is provided on the inner side of the frame. ), a variety of modifications are possible as a platform (not shown) forming a bottom surface may be provided inside the frame (see FIG. 2 ).

The mooring equipment 130 is for mooring the hull part 120, and may include, for example, a mooring member, a quick release hook, and a fairlead. Here, the mooring member may be made of a rope so as to be connected to the other vessel (1), the quick release hook can be hooked and released at the end of the mooring member, the fairlead has various mooring members at the outer end of the top of the mooring deck (127) It can be hooked up with a quick release hook to work smoothly through the angle. The present embodiment can be fixed by being connected to another vessel 1 adjacent to each other by the mooring equipment 130 including such a configuration.

Mooring equipment 130 may be provided on the upper side of the upper deck 122, specifically, the mooring deck 127 is provided on the upper portion of the upper deck 122, than the upper deck 122, the mooring deck 127 ) May be provided high. However, the mooring deck 127 is provided lower than the trunk deck 123, preventing the location of the mooring equipment 130 from being positioned higher than the trunk deck of another neighboring ship 1.

In addition, the upper space of the upper deck 122, the bottom surface is the narrowest due to the installation of the inclined portion 124, and the space is widened toward the upper portion, the mooring equipment 130 on the narrow bottom surface of the upper deck 122 Although it may be difficult to install, by installing the mooring deck 127 on the upper portion of the upper deck 122 as described above, the bottom surface on which the mooring equipment 130 is installed achieves an effect of mooring equipment The installation of 130 may be easy.

In addition, as shown in FIG. 3, since the supporting portion 125B, which will be described later, is extended to the outside of the upper deck 122 to achieve an extended effect of the bottom surface of the upper deck 122, the mooring equipment 130 It may be installed on the upper deck 122, at this time, as the mooring equipment 130 may be disposed to be displaced from each other so as not to interfere with the top side 200, various modifications are possible.

As mentioned above, the support portion 125A may be provided above the hull portion 120, or the support portion 125B may be provided to protrude outward from the side outer plate 121 rather than above.

Referring to Figure 3, the support portion 125B of the second embodiment is different from the support portion 125A of the first embodiment, the upper end of the support portion 125B is provided horizontally with the upper deck 122 so that the entire width of the hull extends outward. Can take the form.

Accordingly, since the lower portion of the liquefied gas carrier 100 remains the same as in the prior art, the width of the upper portion can be extended, thereby securing the installation area of the top side 200 due to the addition of the supporting portion 125. Since it can be, it can be easily converted to FLNG in the process of manufacturing the liquefied gas carrier 100 according to the owner's request.

In addition, since this embodiment forms an extended form of the upper side of the upper deck 122 at the same height as the upper deck 122, the installation height of the top side 200 can be made from the height of the upper deck 122. , It is possible to minimize the overall height of the liquefied gas carrier 100 due to the top side 200.

In one example, the support portion 125B may include a frame 1251 and a deck portion 1252, unlike the first embodiment, the shape and connection position of the frame 1251 may be different, and the deck portion 1252 ) Is a horizontal structure may be made unlike the first embodiment.

Specifically, the frame 1251 may be formed with a through hole 1253 that penetrates through the center itself, the outer side of the frame 1251 may form a curved surface, and the side contacting the outer side plate 121 may be a side outer plate. It can be made corresponding to (121).

This is to reduce the overall load without reducing the area in contact with the side outer plate 121 due to the through hole 1253, and by making the side surfaces of the frame 1251 contact all of the side outer plate 121, the frame 1251 ) And to maximize the connection area between the side shell (121).

That is, the frame 1251 of the first embodiment is supported by the lower portion of the upper deck 122 to connect only the upper portion of the frame 1251 to the inclined portion 124, thereby reducing welding work on the side surface. In connection with the side shell plate 121 through the side surface of the frame 1251, the connection point can be reduced and the connection strength can be increased in preparation for the first embodiment.

In addition, in the above embodiment, it has been described that the support portion 125 is formed with a frame 1251 and a deck portion 1252 to form a structure in which the side surface of the support portion 125 is opened. It may be formed in a box shape in which a space is formed inside. In this way, when the support unit 125 is made of a closed structure, various pipes (which may be pipes for air or vents) flow in or out, or openings for ventilation may be separately provided.

In addition, referring to FIG. 4, the support 140 may be provided on the hull part 120.

The support 140 may be provided on the upper portion of the upper deck or on the upper portion of the support portion 125B, and has a shape in which the area becomes smaller as it goes from the lower end (lower part) of the support 140 to the upper end (upper part), and the area of the lower end part. By increasing, it is possible to increase the supporting strength.

At this time, the top side 200, an elastomer 201 (elastomer) is provided in a portion supported by the support 140, the stopper 202 may protrude around the elastomer 201. Here, the stopper 202 may be in contact with the elastomer 201 of the top side 200 so that the top side 200 is not detached. In addition, the horizontal movement of the top side 200 may be limited by allowing the stopper 202 of the top side 200 to be positioned around the top of the support 140.

Here, the adhesive strength of the surface of the elastomer 201 can be 0% or more to 100% or less, so that the degree of adhesion or strength depends on the degree to which the elastomer 201 and the support 140 are fixed by means such as adhesive or stickiness. It can be done differently. In addition, the adhesive force of both surfaces of the elastomer 201 may be made differently, so that the upper surface of the elastomer 201 is fixed (adhesive) and the lower surface of the elastomer 201 simply touches, or, conversely, the upper surface of the elastomer 201 simply touches. Various modifications are possible, such as being provided and the lower surface of the elastomer 201 being fixed (adhesive).

In this way, the horizontal movement on the support 140 of the top side 200 is limited by the elastomer 201, but the shaking of the top side 200 may be allowed, and according to the shaking of the hull portion 120, the top side When the 200 is shaken, even if the hull portion 120 and the top side 200 are shaken in opposite directions due to reaction, damage due to the occurrence of cracks may be reduced because the connection portion does not form a fixed shape.

On the other hand, in the above embodiment, it was described as an example that the support 140 forms a pillar shape, and the area of the support 140 expands toward the lower side.

Alternatively, referring to FIG. 5, the support 140 may form a partition, and at this time, the elastomer 201 may be formed along an area in which the support 140 is provided, and the stopper 202 may be an elastomer 201 ) Can be provided in a plurality of spaced apart from the outside, various modifications are possible.

In addition, the support unit 125 according to the first and second embodiments does not need to individually assemble the steel plate on the upper deck 122, that is, the frame 1251 and the deck unit 1252 are assembled to the hull unit 120 individually. There is no need, in the form of a block, the support 125 and the upper deck 122 and/or the side by welding or the like after the support 125 is lifted to the top or side of the upper deck 122 by a crane. Connected to the outer plate 121, it is possible to quickly convert to LNG while minimizing the structural change of the liquefied gas carrier 100, and at the same time as the production of the hull part 120, the support section 125A can be produced to produce the support section 125 Due to this, it is possible to minimize the work delay.

6 is a cross-sectional side view showing a liquefied gas floating production storage unloading facility according to a fourth embodiment of the present invention.

Referring to Figure 6, the liquefied gas floating production storage loading and unloading facility 10 according to the fourth embodiment of the present invention, a wire supporting the liquefied gas carrier 100, the top side 200 and the top side 200 It may include 300. Here, the liquefied gas carrier 100 may include a liquefied gas storage tank 110 and the hull portion 120.

The top side 200 may be installed on the hull part 120 of the liquefied gas carrier 100. The top side 200 is a marine structure including a plant facility, and includes a plurality of legs, decks and plant facilities supported by legs and decks to be installed on the liquefied gas carrier 100. It can be a concept.

The topside 200 according to an embodiment of the present invention may form a plurality of layers, and individual layers may include a deck and legs supporting the deck. At this time, the deck and the leg may be welded to each other to be fixed to each other, and of course, the deck and the leg may be fixed by various methods.

As described above, the top side 200 is composed of a plurality of layers composed of decks and legs, and includes plant facilities, and thus, when converting the liquefied gas carrier 100 into FLNG, the hull portion of the liquefied gas carrier 100 ( 120) should be able to withstand the load of the top side (200). However, due to the lack of strength of the trunk deck 123 located at the bottom of the central portion of the top side 200, there is a problem that it is difficult to arrange the heavy side top side 200 on the hull part 120.

In order to solve this, a reinforcement (not shown) capable of supporting the top side 200 was installed in the hull part 120, but according to the installation restrictions of the reinforcement supporting the load of the central part 210 of the top side 200 There were difficulties. Accordingly, as shown in FIG. 6, the liquefied gas floating production storage loading and unloading facility 10 according to the fourth embodiment of the present invention uses a plurality of wires 300 to the central portion 210 of the top side 200 Can support the load.

In more detail, the central portion 210 of the top side 200 according to the fourth embodiment of the present invention may be spaced apart from the trunk deck 123 of the hull portion 120. In addition, the wire 300 may support the load of the central portion of the top side 200 while being in contact with the lower portion of the central portion 210 of the top side 200 spaced apart from the trunk deck 123. Here, the bottom of both sides of the top side 200 may be supported by the upper deck 122 while being in contact with the upper portion of the upper deck 122.

At this time, the liquefied gas carrier 100 may be provided with an upper deck 122 at the top of the hull part 120 along both sides in the longitudinal direction, and a trunk deck 123 may be provided between the upper decks 122. Can be. As described above, since the trunk deck 123 is provided in the central region of the top of the hull part 120 in the direction perpendicular to the longitudinal direction of the liquefied gas carrier 100, the central part 210 of the top side 200 has the trunk deck ( 123).

In addition, both ends of the wire 300 extending from the lower end of the central portion 210 of the top side 200 may be fixed to both sides of the top side 200 and then fixed to one region on the upper deck 122. Here, both sides of the top side 200 to which the wire 300 is fixed may be an area positioned higher than the bottom of the central portion 210 of the top side 200, and the upper surface of the upper deck 122 is the top side 200 ) May be positioned lower than the lower portion of the central portion 210.

Thus, from the bottom of the central portion 210 of the top side 200, both ends pass through both sides of the top side 200, respectively, and the central portion 210 of the top side 200 by wires 300 fixed on the upper deck 122. By being able to support the load, it is possible to solve the load problem of the top side 200 applied to the trunk deck 123. Accordingly, the load applied to the liquefied gas storage tank 110 located inside the lower portion of the trunk deck 123 is reduced, thereby preventing the liquefied gas storage tank 110 from being damaged.

7 is a cross-sectional side view showing a liquefied gas floating production storage unloading facility according to a fifth embodiment of the present invention.

Referring to FIG. 7, the liquefied gas floating production storage loading and unloading facility 20 according to the fifth embodiment of the present invention includes a liquefied gas carrier including a hull part 120 accommodating the liquefied gas storage tank 110 ( 100), and may include a top side 200 installed on the hull portion 120 of the liquefied gas carrier 100, a support portion 125, and a wire 300 supporting the central load of the top side 200. have.

At this time, the liquefied gas carrier 100 may be provided with an upper deck 122 at the top of the hull part 120 along both sides in the longitudinal direction, and a trunk deck 123 may be provided between the upper decks 122. You can. Here, the upper deck 122 and the trunk deck 123 may be provided with different heights from each other, and the trunk deck 123 may be provided higher than the upper deck 122.

The liquefied gas floating production storage loading and unloading facility 20 according to the fifth embodiment of the present invention uses a plurality of wires 300, similar to the liquefied gas floating production storage unloading facility 10 according to the fourth embodiment The load of the central portion 210 of the top side 200 may be supported. That is, the wire 300 can support the load of the top side 200 applied to the trunk deck 123, and, in addition, a support 125 is provided on the upper portion of the upper deck 122, thereby providing Both ends may be fixed to the support 125.

In this way, the support portion 125 provided on the upper portion of the upper deck 122 is provided at a height equal to or similar to the height of the trunk deck 123, and the upper end of the support portion 125 may be provided in parallel with the trunk deck 123. have. At this time, the central portion 210 of the top side 200 may be spaced apart from the trunk deck 123 of the hull portion 120 by a predetermined interval. And, the bottom of both sides of the top side 200 may be supported by the support 125 while contacting the top of the support 125.

In order to minimize the load applied to the liquefied gas storage tank 110 located below the central portion 210 of the top side 200, the load of the central portion 210 of the top side 200 using the wire 300 Can support. That is, the wire 300 may support the load of the central portion of the top side 200 while contacting the lower portion of the central portion 210 of the top side 200 spaced apart from the trunk deck 123.

In addition, both ends of the wire 300 extending from the lower end of the central portion 210 of the top side 200 may be fixed to both sides of the top side 200 and then fixed to one region on the support portion 125. Here, both sides of the top side 200 where the wire 300 is fixed may be an area positioned higher than the bottom of the central portion 210 of the top side 200, and the upper surface of the support portion 125 is the trunk deck 123. Since it is provided in parallel with, it may be located lower than the bottom of the central portion 210 of the top side 200.

As described above, both ends from the bottom of the central portion 210 of the top side 200 pass through both sides of the top side 200, respectively, and the central portion 210 of the top side 200 is loaded by the wire 300 fixed on the supporting portion 125. By being able to support, it is possible to solve the load problem of the top side 200 applied to the trunk deck 123.

In addition, since the support portion 125 is provided on the upper deck 122, the upper end portion of the support portion 125 is formed at the same height as the trunk deck 123, so that the height difference between the trunk deck 123 and the upper deck 122 Due to the difficulty of installing the top side 200 can be solved.

8 is a cross-sectional view showing one side of a liquefied gas floating production storage storage facility according to a sixth embodiment of the present invention, and FIG. 9 is a cross-sectional view showing the other side of a liquefied gas floating production storage storage facility according to a sixth embodiment of the present invention. to be.

8 and 9, the liquefied gas floating production storage loading and unloading facility 30 according to the sixth embodiment of the present invention includes liquefaction including a hull portion 120 accommodating the liquefied gas storage tank 110 The gas carrier 100 and the topside 200 and the wirepost 400 installed on the hull part 120 of the liquefied gas carrier 100, and fixed to the wirepost 400 and the topside 200 It may include a wire 300 to support the load of the top side 200.

The top side 200 may be installed at regular intervals along the length direction of the liquefied gas carrier 100. In addition, the top side 200 may form a plurality of layers, and each layer may include a deck, legs supporting the deck, and plant facilities. Accordingly, when converting the liquefied gas carrier 100 to FLNG, the top side 200 must be able to support the hull portion 120 of the liquefied gas carrier 100 by supporting the load of the top side 200.

Here, the hull part 120 is provided higher than the upper deck 122 in the upper portion of the upper deck 122 and the liquefied gas storage tank 110 provided on the top along both sides in the longitudinal direction of the liquefied gas carrier (100). It may include a trunk deck (123). At this time, the bottom of both sides of the top side 200 may be supported by being in contact with the upper deck 122.

In addition, the wire post 400 may be installed spaced apart at regular intervals along the length direction of the liquefied gas carrier 100, and may be installed between the top sides 200. At this time, the wire post 400 may be installed vertically to the upper surface of the hull part 120 in a rod shape, and may be installed at the center of the width direction of the liquefied gas carrier 100. In addition, the wire post 400 may be provided higher than the top of the top side 200.

The wire 300 is provided in plural, and each end is fixed to the wire post 400 and the other end is fixed to one region of the top side 200 to support a portion of the top side 200. At this time, one end of the wire 300 may be fixed to the top of the wire post 400, and the other end of the wire 300 may be fixed to one region of the central portion 210 of the top side 200. Moreover, the other end of the wire 300 may be fixed to a deck located at the central portion 210 of the topside 200.

Here, since the central portion 210 of the top side 200 in the width direction of the liquefied gas carrier 100 is spaced from the hull portion 120, the other end of the plurality of wires 300 is the central portion of the top side 200 ( By being fixed to 210) it can support the load of the central portion 210 of the top side 200.

In addition, one end of the wire 300 is fixed to the upper end of the wire post 400, and is fixed to a higher position than the top of the top side 200, so that the load of the central portion 210 of the top side 200 is more stable. I can support.

10 is a cross-sectional side view showing a liquefied gas floating production storage unloading facility according to a seventh embodiment of the present invention.

Referring to FIG. 10, the liquefied gas floating production storage unloading facility 40 according to the seventh embodiment of the present invention, like the liquefied gas floating production storage unloading facility 30 of the sixth embodiment, is a liquefied gas storage tank The liquefied gas carrier 100 including the hull part 120 accommodating the 110, and the top side 200 and the wire post 400 installed on the hull part 120 of the liquefied gas carrier 100, And, it may include a wire 300 fixed to the wire post 400 and the top side 200 to support the load of the top side 200.

In addition to this, the liquefied gas floating production storage unloading facility 40 may further include a support unit 125. The hull part 120 of the liquefied gas carrier 100 is provided with an upper deck 122 provided at the top along both sides in the longitudinal direction of the liquefied gas carrier 100 and an upper deck 122 at the top of the liquefied gas storage tank 110. ) It may include a trunk deck 123 provided higher than. The support unit 125 is located on the upper portion of the upper deck 122, but the upper end may be provided at a height parallel to the trunk deck 123.

The lower surfaces of both sides of the top side 200 are in contact with the upper surface of the support unit 125 and may be supported by the support unit 125. As a result, the load applied to the lower portions of both sides of the top side 200 is not directly transmitted to the upper deck 122, but is applied to the support 125 located at the upper portion of the upper deck 122, so the upper deck 122 Can solve the problem caused by lack of strength. At this time, the support portion 125 may be made of a material having a greater strength than the upper deck 122, but the material of the support portion 125 is not limited thereto.

As described above, according to the liquefied gas floating production storage loading and unloading facilities (10, 20, 30, 40) according to the present invention, the lack of strength of the upper portion of the hull portion 120 consisting of the trunk deck 123 and the upper deck 122 and It is possible to solve the support problem of the top side 200 due to the installation restrictions of the reinforcement under the load of the central portion 210 of the top side 200.

On the other hand, although not shown in the drawing, the liquefied gas storage tank 110 is provided side by side in the longitudinal direction of the hull, and in one region, for example, the stern, bow or center of the hull, preferably a turret on the inside of the bow ) Or an area for installing FWD Machinery.

The present invention has been described in detail through specific examples, but this is for specifically describing the present invention, and the present invention is not limited to this, and by a person skilled in the art within the technical spirit of the present invention. It will be apparent that the modification or improvement is possible.

All simple modifications or changes of the present invention belong to the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

10, 20, 30, 40: liquefied gas floating production storage handling equipment
100: liquefied gas carrier 110: liquefied gas storage tank
120: hull portion 121: hull outer shell
122: Upper deck 123: Trunk deck
124: slope 125: support
1251: frame 1252: deck
1253: Through hole 130: Mooring equipment
140: support 200: top side
201: Elastomer 202: Stopper
300: wire 400: wire post

Claims (11)

In the liquefied gas storage tank, and a liquefied gas carrier including a hull portion for receiving the liquefied gas storage tank,
The hull portion,
Upper deck provided on the upper left and right;
A trunk deck provided above the upper deck of the liquefied gas storage tank; And
In order to prepare for conversion to FLNG by installing a top side to treat the liquefied gas above the hull portion, and includes a support provided for supporting the top side,
The support portion,
It is provided on the upper side of the upper deck and forms a mooring deck on which the mooring equipment for mooring the hull is installed,
It includes a plurality of frames provided in the transverse direction of the hull portion,
The frame,
Opening is provided in the form of'U' in the middle and open to the outside of the frame,
A liquefied gas carrier comprising a mooring deck in which the mooring equipment for mooring the hull portion is installed in the opening, wherein the mooring deck is provided higher than the upper deck. delete According to claim 1,
Liquefied gas carrier, characterized in that the mooring deck is provided lower than the trunk deck. delete delete delete delete delete According to claim 1, The hull portion,
A liquefied gas carrier further comprising a side shell plate surrounding the liquefied gas storage tank from side to side. According to claim 1, The hull portion,
Liquefied gas carrier further comprising an inclined portion connecting the upper deck and the trunk deck. A liquefied gas floating production storage loading and unloading facility, characterized in that a top side is mounted on the liquefied gas carrier of any one of claims 1 and 3, 9 to 10.

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