An FSRU vessel deck

Abstract

The application provides an FSRU ship deck, which comprises a main deck, a bitt is arranged on the main deck near the bow, a fairlead is arranged on the edge of the main deck, a mooring rope is bound on the bitt, and a raised deck is arranged on the middle part of the main deck, wherein the raised deck comprises a narrow vertical part, a trapezoidal part and a wide vertical part from the bow to the stern direction. The raised deck is designed in a segmented ladder shape, so that the width of the pedestrian passage at the bow is increased under the premise of the same mooring range at the bow; the fairlead can be designed to be farther away from the bow under the condition of the same width of the pedestrian passage on the main deck, so that the mooring range at the bow is increased; and the deck design method in the application does not need to modify the hull lines, so that the design period is shortened and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of large FSRU deck design, and more particularly, to a FSRU ship deck. BACKGROUND

[0002] FSRU (Floating Storage and Regasification Unit) is short for floating liquefied natural gas storage and regasification unit, which integrates multiple functions such as LNG receiving, storage, transfer and regasification into one, and can be divided into two types, one of which is moored to the wharf (fixed wharf or floating wharf) as an LNG receiving terminal, and the other of which has self-propulsion function and can transport LNG. FSRU can be roughly divided into three categories according to the size of the tank, namely small (tank capacity less than 100,000 cubic meters), medium (tank capacity between 100,000 cubic meters and 200,000 cubic meters) and large (tank capacity greater than 200,000 cubic meters).

[0003] At present, a large part of large FSRU on the market adopts GTT MARK III as the cargo maintenance system, which has the advantages of low cargo evaporation rate and light weight, and is deeply favored by the market. However, due to the shape requirement of the first liquid cargo tank, it brings great difficulty to the determination of ship arrangement and speed index, the mooring arrangement of the contraction of the bow line type, and the narrowness of the pedestrian passage. The existing technical solutions generally spend a lot of manpower and material resources to carry out model test, modify the ship line type and the main deck form of the ship body, and extend the flat edge line to meet the arrangement requirements. However, such treatment will lead to poor ship performance, high fuel consumption, increased bow impact and prolonged design cycle and increased cost.

[0004] Therefore, there is an urgent need in the prior art for a technical solution that does not modify the line type and can ensure good rapidity of the ship, reduce the design cycle and reduce the design cost. SUMMARY

[0005] In view of the above deficiencies in the prior art, the present application provides a FSRU ship deck which can increase the mooring range of the bow or the range of the bow pedestrian passage.

[0006] To achieve the above-mentioned purpose, the present application is realized by the following technical solutions:

[0007] A FSRU ship deck, comprising a main deck, a bitt is arranged on the main deck near the bow, a fairlead is arranged on the edge of the main deck, a mooring cable is bound on the bitt, a raised deck is arranged on the middle part of the main deck, and the raised deck comprises a narrow vertical part, a trapezoidal part and a wide vertical part from the bow to the stern direction.

[0008] The fairlead is arranged on the edge of the main deck and in the area of the side wing of the wide vertical part.

[0009] The edge of the main deck, in the area flanking the trapezoidal part, is provided with the fairlead.

[0010] The edge of the main deck, in the area flanking the narrow vertical part, is provided with the fairlead.

[0011] The lower half of the two side faces of the raised deck is a vertical plane, and the upper half is an inclined plane.

[0012] The inclination angle of the inclined plane is 45°.

[0013] The beneficial effects of the present application compared with the prior art are: by designing the raised deck into a segmented stepped shape, the width of the walkway at the bow is increased under the premise of the same mooring range at the bow; in the case of the same width of the walkway on the main deck, the fairlead can be designed to be farther away from the bow, and the mooring range at the bow is increased; the deck design in the present application does not need to modify the hull lines, shortens the design cycle, and reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a top view structural schematic diagram of the present application.

[0015] Figure 2 is a sectional view of A-A of Figure 1

[0016] Figure 3 is a top view structural schematic diagram of the FSRU ship deck in the prior art.

[0017] Reference signs: 1 - mooring cable, 2 - raised deck, 3 - main deck, 4 - fairlead, 5 - bollard, 6 - narrow vertical part, 7 - trapezoidal part, 8 - wide vertical part. DETAILED DESCRIPTION

[0018] The present application will be further described below according to the specific embodiments.

[0019] As Figures 1-2 ​The FSRU ship deck shown includes a main deck 3, a bitt 5 is arranged on the main deck 3 near the bow, the edge of the main deck 3 is provided with a fairlead 4, the mooring line 1 is tied on the bitt 5, and a raised deck 2 is arranged on the middle part of the main deck 3. The raised deck 2 includes a narrow vertical part 6, a trapezoidal part 7 and a wide vertical part 8 from the bow to the stern direction. In this embodiment, on one side edge of the main deck, the fairleads 4 are all arranged in the area corresponding to the flanks of the narrow vertical part 6, and on the other side edge of the main deck, the fairleads 4 are arranged in the area corresponding to the flanks of the wide vertical part 8, the area corresponding to the flanks of the trapezoidal part 7 and the area corresponding to the flanks of the narrow vertical part 6, and the farthest fairlead 4 can be arranged in the area corresponding to the flanks of the wide vertical part 8, so that the range of the mooring line 1 on the deck is expanded. Starting from the narrowing area of the bow line type, the structure of the raised deck 2 is adjusted, the wide vertical part 8, the trapezoidal part 7 and the narrow vertical part 6 are designed as a stepped structure, so that the space of the main deck 3 at the narrowing area is expanded, the main hull structure strength is not affected, and the safety passage in the raised deck 2 is not affected. In the case that the mooring length at the bow is the same, the human passage space of the main deck 3 at the bow of the ship after mooring is increased, and the human passage space is Figure 1 The area between the edge of the raised deck 2 and the edge of the main deck 3 is beneficial to the movement and operation of personnel when the ship is in a mooring state; in the case that the human passage space is the same, compared with Figure 3 the shape of the raised deck 2 in the prior art, the mooring range at the bow is larger.

[0020] The lower half of the two side surfaces of the raised deck 2 is a vertical plane, and the upper half is an inclined plane. The inclination angle of the inclined plane is 45°. Such a design also meets the shape requirement and unchanged volume of the liquid cargo tank below the raised deck 2, saves the space on both sides of the raised deck 2, and makes the human passage space on the main deck 3 wider.

[0021] The above only describes the preferred embodiments of the present application, but the present application is not limited to the above specific embodiments. For those skilled in the art, without departing from the inventive concept, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. An FSRU vessel deck, comprising a main deck (3) provided with a bollard (5) near the bow, the edge of the main deck (3) is provided with a fairlead (4), the mooring line (1) is tied to the bollard (5), characterized in that, The middle part of the main deck (3) is provided with a raised deck (2) which comprises a narrow vertical part (6), a trapezoidal part (7) and a wide vertical part (8) from the bow to the stern direction, the edge of the main deck (3) in the area flanking the wide vertical part (8) is provided with the fairlead (4), the edge of the main deck (3) in the area flanking the trapezoidal part (7) is provided with the fairlead (4), the lower half of the two side faces of the raised deck (2) is a vertical plane and the upper half is an inclined plane.

2. The FSRU vessel deck of claim 1, characterized by, The edge of the main deck (3) in the area flanking the narrow vertical part (6) is provided with the fairlead (4).

3. The FSRU vessel deck of claim 1, characterized by, The inclination angle of the inclined plane is 45°.

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