Fender extension body structure and floating liquefied natural gas production, storage and unloading device

Abstract

The utility model relates to a fender extension body structure and a floating liquefied natural gas production, storage and unloading device, the fender extension body structure is applied to the floating liquefied natural gas production, storage and unloading device, the fender extension body structure comprises a connecting part and an extension part which are connected with each other, and the connecting part is fixedly connected with a ship side of the floating liquefied natural gas production, storage and unloading device; the extension part extends in the length direction and the height direction of the floating liquefied natural gas production, storage and unloading device, and the extension part protrudes out of a ship board in the width direction of the floating liquefied natural gas production, storage and unloading device; wherein the size of the extension part in the width direction is between 1.5 m and 2 m. By adopting the fender extension body structure, the defects of long purchasing period and high purchasing cost caused by adopting a super-conventional fender and a super-large fender can be avoided, and the uncontrollable technical risk caused by the super-large fender is avoided. In addition, the hoisting workload and the working difficulty are also reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to floating type liquefied natural gas production, storage and unloading device technical field, especially to a fender extension body structure and floating type liquefied natural gas production, storage and unloading device. BACKGROUND

[0002] At present, the main products of large-scale floating liquefied natural gas (FLNG) production, storage and unloading projects at home and abroad are liquefied natural gas (LNG) and / or liquefied petroleum gas (LPG). The unloading methods of LNG and LPG often use composite hoses to unload LNG and LPG. For example, the LPG unloading of a certain project uses LPG hoses, and the total flow rate of unloading is 4000 m 3 / h. Liquid-phase LPG uses 4 hoses with a diameter of 10 inches, and gas-phase BOG uses 2 hoses with a diameter of 10 inches. According to the LPG / LNG international standards and manufacturer's regulations, the bending radius of the hose during normal operation is 6 times the diameter, i.e. 1.5 m. In order to prevent the hose from contacting the ship during unloading operation, the minimum gap between the FLNG ship and the liquefied petroleum gas (LPGC) ship is 3.8 m. In order to prevent the FLNG ship from colliding with the LPGC ship and to protect the LPG hoses from being squeezed and damaged, a fender of appropriate size is placed between the two ships during design. Considering the wave action at sea, after simulation calculation, the fender needs to be distributed between the two ships with 4 outer diameters of 6 m. However, the maximum diameter of the standard series size of the fender manufacturers in the international market is 4.5 m, and no manufacturer has experience in using a 6 m fender. At this time, the selection of the fender becomes a difficult problem. SUMMARY

[0003] Therefore, it is necessary to provide a fender extension body structure and a floating liquefied natural gas production, storage and unloading device to solve the technical problem that the size of the fender in the prior art cannot meet the requirements of the fender.

[0004] A fender extension body structure is applied to a floating liquefied natural gas production, storage and unloading device, and the fender extension body structure comprises the following in connection with each other:

[0005] A connecting part is fixedly connected with the ship side of the floating liquefied natural gas production, storage and unloading device;

[0006] An extension part extends along the length direction and the height direction of the floating liquefied natural gas production, storage and unloading device in the length direction and the height direction, and protrudes from the ship side in the width direction of the floating liquefied natural gas production, storage and unloading device;

[0007] The size of the extension part in the width direction is between 1.5-2m.

[0008] In one embodiment, the extension part is configured to form a multi-layer grid structure through profile spacing.

[0009] In one embodiment, the multi-layer grid structure comprises:

[0010] A first grid layer, a plurality of first grid layers are spaced along the height direction of the extension part;

[0011] A second grid layer, a plurality of second grid layers are spaced along the width direction of the extension part;

[0012] Wherein, the first grid layer and the second grid layer are cross arranged and connected.

[0013] In one embodiment, the first grid layer and the second grid layer each comprise:

[0014] A plurality of connecting pipes, a plurality of the connecting pipes are cross arranged to form a grid structure, and a plurality of the connecting pipes are fixedly connected.

[0015] The plurality of connecting pipes are cross arranged to form a grid structure, so as to further reduce the weight of each layer.

[0016] In one embodiment, the connecting pipe is a carbon steel pipe, and the outer diameter of the carbon steel pipe is between 100-150mm.

[0017] In one embodiment, an anticorrosion layer is arranged on the outer circumferential surface of the connecting pipe.

[0018] In one embodiment, the anticorrosion layer is a paint layer.

[0019] In one embodiment, the connecting pipes are fixedly connected through welding.

[0020] A floating liquefied natural gas production, storage and unloading device, the floating liquefied natural gas production, storage and unloading device comprises a plurality of fender extension body structures as described above.

[0021] In one embodiment, a plurality of the fender extension body structures are arranged at intervals along the length direction of the ship side of the floating liquefied natural gas production, storage and unloading device.

[0022] The beneficial effects of the utility model are as follows:

[0023] The present invention provides a fender extension structure for use in conjunction with a fender in a floating liquefied natural gas (LNG) production, storage and offloading (FPOS) vessel. A connecting portion of the fender extension structure primarily connects the extension to the side of the FPOS vessel. The extension is extended longitudinally and heightwise along the length and height of the FPOS vessel, and widthwise along the width of the FPOS vessel, such that the extension protrudes beyond the side of the vessel in the width direction of the FPOS vessel. The widthwise dimension of the extension is set between 1.5 and 2 meters. When unloading natural gas or liquefied petroleum gas (LPG), the fender is positioned between two vessels, with one side of the fender resting against the fender extension structure fixedly connected to the side of the FPOS vessel. This allows the fender extension structure, combined with the fender, to increase the distance between the two vessels, thereby ensuring that the distance between the two vessels meets unloading requirements while reducing fender size requirements. The use of the fender extension structure mentioned above avoids the drawbacks of using oversized fenders, such as the long procurement cycle and high procurement costs, and avoids the uncontrollable technical risks brought about by oversized fenders. It also reduces the workload and difficulty of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a fender extension structure provided in one embodiment of the present invention after being connected to a floating liquefied natural gas production, storage and unloading device;

[0025] Figure 2 A schematic diagram of the structure of the fender extension structure in the width direction and the height direction provided by an embodiment of the present invention;

[0026] Figure 3 This is a schematic structural diagram of the fender extension structure provided in one embodiment of the present invention in the length direction and height direction.

[0027] Reference numerals:

[0028] Fender extension structure 100; connecting portion 110; extending portion 120; first mesh layer 130; second mesh layer 140; connecting pipe 150; floating liquefied natural gas production storage and offloading device 200; liquefied petroleum gas ship 300; fender 400; width direction X; length direction Y; height direction Z. DETAILED DESCRIPTION

[0029] In order to make the above object, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners without departing from the spirit of the present application. Those skilled in the art will appreciate the scope of the present application and can make similar modifications without departing from the spirit of the present application. Therefore, the present application is not limited by the embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0035] Referring to Figures 1 to 3 The utility model discloses an fender extension structure 100 is applied to floating type liquefied natural gas production and storage device 200, and fender extension structure 100 includes connecting portion 110 and extension 120, and connecting portion 110 is fixedly connected with the ship side of floating type liquefied natural gas production and storage device 200, and extension 120 extends along the length direction Y and height direction Z of floating type liquefied natural gas production and storage device 200 in length direction Y and height direction Z, and extension 120 protrudes from the ship side along the width direction X of floating type liquefied natural gas production and storage device 200 in width direction X, and wherein the size of extension 120 in width direction X is between 1.5-2m.

[0036] The technical scheme provides a fender extension structure 100 applied to a floating liquefied natural gas production, storage and unloading device 200 and used in combination with a fender 400. The connecting part 110 in the fender extension structure 100 is mainly used to realize the connection between the extension part 120 and the ship side of the floating liquefied natural gas production, storage and unloading device 200. The length direction Y and the height direction Z of the extension part 120 are extended along the length direction Y and the height direction Z of the floating liquefied natural gas production, storage and unloading device 200, the width direction X of the extension part 120 is extended along the width direction X of the floating liquefied natural gas production, storage and unloading device 200, so that the extension part 120 protrudes from the ship side in the width direction X of the floating liquefied natural gas production, storage and unloading device 200. The size of the extension part 120 in the width direction X is set to be between 1.5-2m, so that when the natural gas or the liquefied petroleum gas is unloaded, the fender 400 is arranged between the floating liquefied natural gas production, storage and unloading device 200 and the liquefied petroleum gas ship 300, and one side of the fender 400 is abutted against the fender extension structure 100 fixedly connected to the ship side of the floating liquefied natural gas production, storage and unloading device 200, so that the fender 400 is combined with the fender extension structure 100 to increase the distance between the two ships, so that the distance between the two ships meets the unloading requirements, and the size requirement of the fender 400 is reduced. The fender extension structure 100 can avoid the use of an oversized fender 400, and the disadvantages of long procurement cycle and high procurement cost caused by the oversized fender 400, and the uncontrollable technical risks caused by the oversized fender 400. In addition, the hoisting workload and difficulty are also reduced.

[0037] The specific structure of the connecting part 110 and the extension part 120 is not limited, as long as it protrudes from the ship side and cooperates with the fender 400 to increase the distance between the two ships. Specifically, the fender 400 is usually a structure of rubber material and can be elastically deformed. The fender 400 is arranged between the fender extension structure 100 and another ship body, so that the two ships are isolated by the fender extension structure 100 and the fender 400, and the relative movement between the two ships is buffered by the elastic deformation of the fender 400, so that the collision between the two ships is prevented when the natural gas or the liquefied petroleum gas is unloaded, and the reliability and safety during unloading are ensured. Specifically, the extension part 120 is approximately a cuboid structure.

[0038] The length and height of the fender extension structure 100 should be determined by considering the movement of the two ships caused by the sea waves and the change of the draft of the floating LNG production, storage and offloading unit 200. Specifically, the length of the fender extension structure 100 should be greater than the length of the elastically deformable fender 400 plus the horizontal movement between the two ships when the sea waves occur. For example, the horizontal movement between the two ships is about 5 m when the sea waves occur, and thus the length of the fender extension structure 100 should be greater than the length of the fender 400 plus 5 m. The height of the fender extension structure 100 should be greater than the diameter of the fender 400, the range of the up-and-down movement of the two ships and the change of the draft of the floating LNG production, storage and offloading unit 200. For example, the range of the up-and-down movement of the two ships is about 7 m when the sea waves occur, and thus the height of the fender extension structure 100 should be greater than the diameter of the fender 400 plus 7 m plus the change of the draft of the floating LNG production, storage and offloading unit 200.

[0039] In combination Figure 2 and Figure 3 It should be understood that in one embodiment, the extension 120 is configured as a multi-layer grid structure formed by the spacer profiles.

[0040] By configuring the extension 120 as a multi-layer grid structure formed by the spacer profiles, the fender extension structure 100 in combination with the fender 400 can meet the unloading distance between the two ships, while the weight of the fender extension structure 100 is reduced, thereby reducing the load of the floating LNG production, storage and offloading unit 200.

[0041] Specifically, the extension is a cuboid structure, in which five surfaces are configured as grid structures, and the interior of the cuboid structure is a cavity. In this way, the weight of the entire fender extension structure can be reduced while ensuring that the extension 120 can extend out of the ship and isolate the two ships in combination with the fender. In another embodiment, one or two layers of grid structures can be arranged in the interior of the cuboid structure, thereby improving the strength of the entire fender extension structure.

[0042] In combination Figure 2 and Figure 3 It should be understood that in one embodiment, the multi-layer grid structure includes a first grid layer 130 and a second grid layer 140, a plurality of first grid layers 130 are arranged along the height direction Z of the extension 120, and a plurality of second grid layers 140 are arranged along the width direction X of the extension 120, wherein the first grid layers 130 and the second grid layers 140 are arranged in cross and connected.

[0043] By arranging the multi-layer grid structure as the first grid layer 130 arranged in the height direction Z, the second grid layer 140 arranged in the width direction X, and the first grid layer 130 and the second grid layer 140 arranged in cross and connected to form a three-dimensional grid structure extending in the length direction Y, the width direction X and the height direction Z, the structural strength of the fender extension body structure 100 is ensured, and the weight of the fender extension body structure 100 is reduced, so that the load weight of the floating liquefied natural gas production, storage and unloading device 200 can be reduced while ensuring the reliability of the fender extension body structure 100 combined with the fender 400 to isolate two ships.

[0044] In the embodiment, the first grid layer 130 and the second grid layer 140 are perpendicular to each other, the first grid layer 130 includes a plurality of grids, the second grid layer 140 includes a plurality of grids, and the first grid layer 130 and the second grid layer 140 are arranged in the perpendicular direction to form a three-dimensional grid structure.

[0045] Specifically, the first grid layer and the second grid layer can be two layers arranged at both ends of the width direction and the height direction. Of course, the first grid layer and the third grid layer can also be three layers, four layers, etc.

[0046] In combination Figure 2 and Figure 3 It should be understood that in one embodiment, the first grid layer 130 and the second grid layer 140 each include a plurality of connecting pipes 150, the plurality of connecting pipes 150 are arranged in cross to form a grid structure, and the plurality of connecting pipes 150 are fixedly connected. By arranging the plurality of connecting pipes 150 in cross to form a grid structure, the weight of each layer is further reduced.

[0047] The specific structure of the connecting pipe 150 is not limited, which can be a round pipe or a square pipe. In another embodiment, it can also be arranged in the form of combination of round pipe and square pipe.

[0048] In one embodiment, the connecting pipe 150 is a carbon steel pipe, and the outer diameter of the carbon steel pipe is between 100-150mm. By arranging the connecting pipe 150 as a carbon steel pipe, the strength of the fender extension body structure 100 is ensured, and the weight of the fender extension body structure 100 is reduced. The outer diameter of the carbon steel pipe is selected to be between 100-150mm to ensure the structural strength of the fender extension body structure 100. The interval of the carbon steel pipe in the width direction can be 500-600mm; the interval distance in the height direction can be 1000mm-1200mm.

[0049] In one of the embodiments, the outer circumferential surface of the connecting pipe 150 is provided with a corrosion-proof layer. By providing the corrosion-proof layer on the outer circumferential surface of the connecting pipe 150, the corrosion of the connecting pipe 150 by seawater is reduced, thereby ensuring the service life of the fender extension structure 100.

[0050] The specific structure of the corrosion-proof layer is not limited, for example, the surface of the carbon steel pipe can be galvanized; in another embodiment, a plastic film sleeve structure can be wrapped on the outer circumferential surface of the connecting pipe 150.

[0051] In one of the embodiments, the corrosion-proof layer is a paint layer. The corrosion-proof layer is provided as a paint layer, which is simple in structure, easy to form, and can reduce production cost while ensuring corrosion resistance. Specifically, the paint layer can be formed on the carbon steel pipe by spraying or brushing.

[0052] In one of the embodiments, the connecting pipes 150 are fixed by welding. The connecting pipes 150 are fixed by welding, so that the entire fender extension structure 100 is simple in structure, has few parts, is easy to produce, reliable in strength, and low in cost.

[0053] As shown in Figure 1 The utility model provides an embodiment further provides a floating type liquefied natural gas production, storage and unloading device 200, and the floating type liquefied natural gas production, storage and unloading device 200 includes a plurality of above-mentioned fender extension structure 100.

[0054] By applying the above-mentioned fender extension structure 100 to the floating type liquefied natural gas production, storage and unloading device 200, when unloading natural gas or liquefied petroleum gas, the fender 400 is arranged between two ships, and one side of the fender 400 abuts against the fender extension structure 100 fixedly connected to the ship side of the floating type liquefied natural gas production, storage and unloading device 200, so as to increase the distance between the two ships by the fender extension structure 100 combined with the fender 400, thereby meeting the unloading requirements while reducing the size requirements of the fender 400. The above-mentioned fender extension structure 100 can avoid the drawbacks of long procurement cycle and high procurement cost caused by the use of super-conventional fender 400 and oversized fender 400, and avoid the uncontrollable technical risks caused by the oversized fender 400. In addition, the lifting workload and difficulty are also reduced.

[0055] In one of the embodiments, a plurality of fender extension structures 100 are arranged at intervals along the length direction Y of the ship side of the floating LNG production, storage and offloading unit 200. The plurality of fender extension structures 100 are arranged at intervals along the length direction Y of the ship side to isolate two strips of the ship by the plurality of fender extension structures 100 in combination with the fender 400 along the length direction Y of the floating LNG production, storage and offloading unit 200, thereby ensuring safety and reliability during offloading. Specifically, four fender extension structures 100 are arranged along the length direction Y of the ship side.

[0056] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but it should be understood that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0057] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that, for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these modifications and improvements are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A fender extension structure, used in a floating liquefied natural gas production, storage and unloading device, characterized in that: The fender extension structure includes interconnected: a connecting portion, the connecting portion being fixedly connected to the side of the floating liquefied natural gas production, storage and offloading device; an extension portion, the extension portion extending along the length direction and the height direction of the floating liquefied natural gas production, storage and offloading device in the length direction and the height direction, and the extension portion protruding from the ship's side along the width direction of the floating liquefied natural gas production, storage and offloading device in the width direction; Wherein, the dimension of the extension portion in the width direction is between 1.5-2m.

2. The fender extension structure according to claim 1, characterized in that: The extension portion is constructed into a multi-layer grid structure formed by arranging profiles at intervals.

3. The fender extension structure according to claim 2, characterized in that: The multi-layer grid structure comprises: a first grid layer, wherein a plurality of first grid layers are spaced apart along a height direction of the extension portion; a second mesh layer, wherein a plurality of second mesh layers are spaced apart along the width direction of the extension portion; The first grid layer and the second grid layer are cross-arranged and connected.

4. The fender extension structure according to claim 3, characterized in that: The first grid layer and the second grid layer both include: A plurality of connecting pipes are cross-arranged to form a grid structure, and the plurality of connecting pipes are fixedly connected.

5. The fender extension structure according to claim 4, characterized in that: The connecting pipe is a carbon steel pipe, and the outer diameter of the carbon steel pipe is between 100-150 mm.

6. The fender extension structure according to claim 4, characterized in that: An anti-corrosion layer is provided on the outer peripheral surface of the connecting pipe.

7. The fender extension structure according to claim 6, characterized in that: The anti-corrosion layer is a paint layer.

8. The fender extension structure according to claim 4, characterized in that: The connecting pipes are fixed by welding.

9. A floating liquefied natural gas production, storage and unloading device, characterized in that: The floating liquefied natural gas production, storage and offloading facility comprises a plurality of fender extension structures according to any one of claims 1 to 8.

10. The floating liquefied natural gas production, storage and unloading device according to claim 9, characterized in that: A plurality of fender extension structures are arranged at intervals along the length direction of the side of the floating liquefied natural gas production, storage and offloading device.

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