Methanol fuel storage tank layout for dual-fuel ships

Abstract

The present invention discloses a methanol fuel storage tank layout for a dual-fuel ship, comprising a methanol fuel storage tank and an isolation void tank; the methanol fuel storage tank is formed by the outer hull plating and the fuel tank bulkhead; an isolation tank bulkhead is provided on the outer side of the fuel tank bulkhead, and the isolation void tank is provided between the fuel tank bulkhead and the isolation tank bulkhead; a passage tank is provided between the main deck and the isolation tank bulkhead; a plurality of passage platforms are provided in the passage tank; a plurality of structural openings are provided on the passage platforms; a main deck hatch is provided on the main deck; a ladder for crew members to pass through is provided in the passage tank; a fuel tank hatchhead is provided on the fuel tank bulkhead; a methanol fuel delivery pump is provided in the methanol fuel storage tank, and the top of the methanol fuel delivery pump is located above the fuel tank bulkhead. The provision of the passage tank improves space utilization and enables rapid lifting of the methanol fuel delivery pump. The layout scheme of the present invention can be well applied to bulk carriers and other ship types.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a methanol fuel storage tank arrangement for dual-fuel ships. Background Art

[0002] In the prior art, methanol dual-fuel ships are mostly container ships and liquid cargo ships, and their methanol fuel storage tanks are mostly arranged in the loading area of ​​the ship.

[0003] Patent application publication number CN 115158539 A discloses a methanol fuel containment and supply system layout for a large dual-fuel container ship. This patent is a patent application for the layout of methanol fuel-related equipment for container ships. In this patent, the living area is located above the main deck in the cargo hold area of ​​the ship, and the methanol fuel storage tank is arranged below the living area. The fuel tank is adjacent to the cargo hold in front and behind through isolated empty tanks. This layout scheme is not suitable for ship types such as bulk carriers. The living area of ​​bulk carriers is usually located at the stern of the ship, above the engine room, and the methanol fuel storage tank cannot be arranged below the living area. At the same time, the methanol fuel storage tank is arranged in the area between the front and rear cargo holds, occupying the cargo hold space and reducing the ship's loading capacity. Therefore, this layout scheme is not suitable for bulk carriers.

[0004] Patent application number CN113047994A discloses a methanol-fuel dual-fuel vessel. This patent applies to the layout of methanol fuel-related equipment for liquid cargo vessels. The methanol fuel storage tanks are located in the cargo area below the main deck, occupying the vessel's cargo space. This is not a preferred solution for bulk carriers.

[0005] The patent application publication number CN115195937A discloses a methanol fuel tank ship layout scheme. This patent provides a solution for the layout of the methanol fuel tank of a bulk carrier. However, it uses the entire double bottom of the ship, except for the pipe void tank, for the methanol fuel storage tank and the isolation void tank. The horizontal section of the top of the methanol fuel storage tank has a small cabin height and a small effective volume; and the internal structural components of the horizontal section of the top of the methanol fuel storage tank are complex, which has an adverse effect on the coating stability of the methanol fuel tank; the horizontal section of the top of the methanol fuel storage tank has a large horizontal area and a small cabin height. When the ship shakes, the change in the tank liquid level is large relative to the cabin height, which also has an adverse effect on the accuracy of the tank liquid level telemetry.

[0006] In the prior art, there is a technical disadvantage that the methanol fuel storage tank layout is not suitable for bulk carriers. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a methanol fuel storage tank arrangement for dual-fuel ships.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] A dual-fuel ship methanol fuel storage tank arrangement comprises a methanol fuel storage tank and an isolation void tank; the methanol fuel storage tank is formed by being enclosed by a hull outer plate and a fuel tank bulkhead; an isolation tank bulkhead is provided on the outer side of the fuel tank bulkhead, and the isolation void tank is provided between the fuel tank bulkhead and the isolation tank bulkhead; a passage tank for the passage of crew members and equipment is provided between the main deck and the isolation tank bulkhead; a plurality of transversely distributed passage platforms are provided in the passage tank; a plurality of structural openings for the passage of crew members or equipment are opened on the passage platforms; a main deck hatch cover for entering and exiting the passage tank is provided on the main deck; a ladder for the passage of crew members is provided in the passage tank; a fuel tank hatch cover is provided on the fuel tank bulkhead; a methanol fuel delivery pump is provided in the methanol fuel storage tank, and the top of the methanol fuel delivery pump is located above the fuel tank bulkhead.

[0010] The channel platform is provided with a structural opening above the methanol fuel transfer pump, the main deck hatch cover is located above the methanol fuel transfer pump, and a channel for lifting the methanol fuel transfer pump up and down is formed between the isolation compartment bulkhead and the main deck.

[0011] The upper part of the methanol fuel delivery pump is installed through the bulkhead of the isolation cabin, and the top of the methanol fuel delivery pump is located in the passage cabin.

[0012] Alternatively, the top of the methanol fuel delivery pump is located in the isolation cabin; the isolation cabin wall is provided with a first through hole above the methanol fuel delivery pump for the methanol fuel delivery pump to enter and exit.

[0013] The top of the fuel tank hatch cover is located in the isolation cabin, and the isolation cabin bulkhead is provided with a second through hole above the fuel tank hatch cover.

[0014] Alternatively, the top of the fuel tank hatch cover is located in the passage compartment, and the main body of the fuel tank hatch cover is penetrated through the isolation compartment bulkhead.

[0015] The passage cabin comprises a passage cabin surrounding wall for enclosing the passage cabin; the top of the passage cabin surrounding wall is fixedly connected to the main deck, and the bottom of the passage cabin surrounding wall is fixedly connected to the isolation cabin bulkhead.

[0016] The passage cabin is provided with vertically distributed partitions, and passage holes are opened on the partitions.

[0017] The methanol fuel storage tank is located below the vessel's lowest waterline.

[0018] The ship has a double bottom, and the methanol fuel storage tank is located in the double bottom space of the ship. A tunnel compartment is provided in the double bottom space of the ship, and a functional cabin is provided between the isolation void compartment and the tunnel compartment.

[0019] A ladder hole is provided on the bulkhead of the isolation compartment. There are multiple ladders in the passage compartment, one of which is passed through the ladder hole. The lower part of the ladder passed through the ladder hole extends to the upper part of the fuel tank bulkhead.

[0020] The fuel tank bulkhead includes transverse wall plates distributed transversely, and the transverse wall plates are located below the ladder hole; the bottom of the ladder passing through the ladder hole extends to the top of the transverse wall plates.

[0021] The fuel tank hatch cover is installed on the transverse wall plate.

[0022] The access platform and the main deck are provided with a structural opening reserved space above the methanol fuel delivery pump for opening a structural opening when needed.

[0023] The beneficial effects of the present invention are as follows: in the present invention, a passage cabin is provided that combines the passage of crew members and the lifting of the methanol fuel delivery pump, thereby improving space utilization; the methanol fuel delivery pump can be quickly lifted from above the main deck to the methanol fuel storage cabin for installation, or lifted outside for maintenance. The layout scheme of the present invention can be well applied to bulk carriers and other ship types. In the present invention, the methanol fuel storage cabin is arranged in the double bottom cabin, does not occupy the cargo hold space of the ship, and increases the cargo capacity of the ship. The present invention uses the double bottom area between the isolation empty cabin and the pipe cabin as a ballast tank or a cabin for other purposes, avoiding the adverse factors caused by using this area as a methanol fuel storage cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of Example 1 of the present invention.

[0025] Figure 2 This is a side view of embodiment 1 of the present invention.

[0026] Figure 3 This is a structural schematic diagram of the location of the methanol fuel storage tank in Example 2 of the present invention.

[0027] Figure 4 This is a structural schematic diagram of the location of the methanol fuel storage tank in Example 3 of the present invention.

[0028] Figure 5 This is a structural schematic diagram of the location of the methanol fuel storage tank in Example 4 of the present invention. DETAILED DESCRIPTION

[0029] Several preferred embodiments are given below and combined with the accompanying drawings to more clearly and completely illustrate the present invention.

[0030] Example 1

[0031] like Figure 1 and Figure 2Figure 2 shows a methanol fuel storage tank layout for a dual-fuel ship, comprising a methanol fuel storage tank 10 and a cofferdam 20. The methanol fuel storage tank 10 is enclosed by a hull plating 12 and a fuel tank bulkhead 11. A cofferdam bulkhead 21 is provided outside the fuel tank bulkhead 11, with the cofferdam 20 disposed between the fuel tank bulkhead 11 and the cofferdam bulkhead 21. Inside the ship, the methanol fuel storage tank 10 is isolated from other compartments by the cofferdam 20.

[0032] The methanol fuel storage tank 10 is located below the vessel's lowest waterline. The vessel has a double bottom, and the methanol fuel storage tank is located within this double bottom. A manhole compartment 23 is located within this double bottom, and a functional compartment 24 is located between the cofferdam 20 and the manhole compartment 23. This functional compartment 24 can be used for ballast water, for example.

[0033] A passageway 30 for the passage of crew members and equipment is provided between the main deck 41 and the cofferdam bulkhead 21. The passageway 30 can be used for the passage of crew members and the lifting and installation of equipment such as methanol fuel delivery pumps.

[0034] A topside tank 25 and a cargo hold 22 are also provided below the main deck 41 .

[0035] The passage compartment 30 includes a passage compartment wall 31 for enclosing the passage compartment. In this embodiment, the passage compartment 30 is formed by the passage compartment wall 31 and the hull outer plating 12. The top of the passage compartment wall 31 is fixed to the main deck 41, and the bottom of the passage compartment wall 31 is fixed to the cofferdam bulkhead 21.

[0036] A plurality of transversely distributed passage platforms 32 are provided in the passage cabin 30; a plurality of structural openings 33 for the passage of crew members or equipment are provided on the passage platforms 32.

[0037] A ladder 34 for the crew to pass through is provided in the passageway cabin 30. A main deck hatch cover 42 for entering and exiting the passageway cabin is provided on the main deck 41.

[0038] A fuel tank hatch cover 14 is provided on the fuel tank bulkhead 11. In this embodiment, the top of the fuel tank hatch cover 14 is located in the passage compartment 30, and the main body of the fuel tank hatch cover is penetrated through the cofferdam bulkhead.

[0039] A ladder hole 50 is provided on the cofferdam bulkhead 21 . There are multiple ladders in the passage compartment 30 , one of which is passed through the ladder hole. The lower part of the ladder 35 passed through the ladder hole 50 extends to the upper part of the fuel tank bulkhead 11 .

[0040] The crew can enter the cofferdam 20 from the main deck 41 through the main deck hatch cover 42 and the ladder in the passage compartment 30.

[0041] The crew can also enter the methanol fuel storage tank 10 through the access compartment 30 and then through the fuel tank hatch 14.

[0042] A methanol fuel delivery pump 13 is provided in the methanol fuel storage tank 10, and the top of the methanol fuel delivery pump 13 is located above the fuel tank bulkhead 11. The methanol fuel delivery pump 13 can be hydraulically driven or motor driven.

[0043] In this embodiment, the upper portion of the methanol fuel delivery pump 13 is disposed through the isolation compartment bulkhead 21 , and the top of the methanol fuel delivery pump 13 is located in the passage compartment 30 .

[0044] The channel platform 32 is provided with a structural opening 33 above the methanol fuel delivery pump 13. The main deck hatch cover 42 is located above the methanol fuel delivery pump 13. A channel for lifting the methanol fuel delivery pump up and down is formed between the isolation compartment bulkhead 21 and the main deck 41.

[0045] The methanol fuel transfer pump is aligned with the structural opening above the methanol fuel transfer pump and the main deck hatch cover, so that the methanol fuel transfer pump can be lifted from above the main deck to the methanol fuel storage tank for installation, or lifted outside for maintenance.

[0046] In another embodiment, the access platform and the main deck are provided with a reserved structural opening space above the methanol fuel transfer pump for opening a structural opening when needed. During construction of some ships, the methanol fuel transfer pump is installed first, and then the access platform is constructed; the main deck hatch cover is relatively far away from the vertical position of the methanol fuel transfer pump. In this case, the access platform and the main deck are provided with a reserved structural opening space above the methanol fuel transfer pump. When a structural opening needs to be opened to lift out the methanol fuel transfer pump, a structural opening can be opened in the reserved structural opening space on the access platform and the main deck, allowing the methanol fuel transfer pump to be lifted out for maintenance.

[0047] In the present invention, a passage cabin is provided for the passage of crew members and the lifting of a methanol fuel delivery pump, thereby improving space utilization.

[0048] The present invention can lift the methanol fuel delivery pump up and down, realizes the rapid lifting of the methanol fuel delivery pump, and greatly improves the lifting efficiency of the methanol fuel delivery pump.

[0049] The arrangement scheme of the present invention can be well applied to bulk carriers and other ships.

[0050] In this invention, the methanol fuel storage tank is located within the double-bottom tank, eliminating the need for cargo space in the vessel's cargo hold and increasing the vessel's cargo capacity. The double-bottom area between the cofferdam and the manhole compartment has limited height, small effective capacity, and a complex internal structure, which hinders the long-term use of the tank coating. This invention utilizes this area as a ballast tank or other compartment, thus circumventing these disadvantages.

[0051] Example 2

[0052] This embodiment discloses a methanol fuel storage tank arrangement for a dual-fuel ship.

[0053] The difference between this embodiment and embodiment 1 is that a partition is provided in the passage cabin.

[0054] like Figure 3 As shown, a vertically distributed partition 36 is provided in the passage cabin 30, and a passage hole 37 is opened on the partition 36.

[0055] Crew members can pass through the areas on both sides of the bulkhead through the passage holes on the bulkhead.

[0056] This embodiment further enhances the structural strength of the passage cabin by providing a partition in the passage cabin.

[0057] The other structures of this embodiment are the same as those of embodiment 1, and the other advantages of this embodiment are the same as those of embodiment 1, which will not be repeated here.

[0058] Example 3

[0059] This embodiment discloses a methanol fuel storage tank arrangement for a dual-fuel ship.

[0060] The difference between this embodiment and embodiment 1 is that the position of the top of the methanol fuel delivery pump is different from that in embodiment 1, the position of the top of the fuel tank hatch is different from that in embodiment 1, and the isolation compartment bulkhead is adjusted based on embodiment 1.

[0061] like Figure 4 As shown, the top of the methanol fuel delivery pump 13 is located in the isolation compartment 20; the isolation compartment bulkhead 21 is provided with a first through hole 51 above the methanol fuel delivery pump for the entry and exit of the methanol fuel delivery pump; the top of the fuel tank hatch 14 is located in the isolation compartment 20, and the isolation compartment bulkhead 21 is provided with a second through hole 52 above the fuel tank hatch.

[0062] In this embodiment, by providing the first through hole and the second through hole on the bulkhead of the isolation compartment, it is convenient for the crew to pass through and the fuel tank hatch to open, and it is also convenient for the lifting of the methanol fuel delivery pump.

[0063] The other structures of this embodiment are the same as those of embodiment 1, and the other advantages of this embodiment are the same as those of embodiment 1, which will not be repeated here.

[0064] Example 4

[0065] This embodiment discloses a methanol fuel storage tank arrangement for a dual-fuel ship.

[0066] The difference between this embodiment and embodiment 1 is that the position of the top of the methanol fuel delivery pump is different from that in embodiment 1, the position of the top of the fuel tank hatch is different from that in embodiment 1, and the structure of the fuel tank bulkhead is different from that in embodiment 1.

[0067] like Figure 5 As shown, the top of the methanol fuel delivery pump 13 is located in the isolation cabin 20; the isolation cabin bulkhead 21 is provided with a first through hole 51 above the methanol fuel delivery pump for the methanol fuel delivery pump to enter and exit; the top of the fuel tank hatch 14 is located in the isolation cabin 20.

[0068] The fuel tank bulkhead 11 includes a transversely distributed transverse wall panel 15, which is located below the ladder hole 50; the ladder 35 passing through the ladder hole extends from the bottom to the top of the transverse wall panel 15; the fuel tank hatch cover 14 is arranged on the transverse wall panel 15.

[0069] The fuel tank bulkhead 11 further comprises vertical wall panels 16 distributed vertically, which are fixed to the bottom of the ship. The height of the vertical wall panels 16 is the same as the height of the functional compartment 24.

[0070] In this embodiment, the transverse wall panels of the fuel tank bulkhead are distributed transversely, which facilitates the arrangement of ladders passing through the ladder holes, facilitates the crew to enter the isolated empty compartment, and facilitates the crew to enter the methanol fuel storage tank through the fuel tank hatch.

[0071] The other structures of this embodiment are the same as those of embodiment 1, and the other advantages of this embodiment are the same as those of embodiment 1, which will not be repeated here.

[0072] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A methanol fuel storage tank arrangement for a dual-fuel ship, comprising a methanol fuel storage tank and an isolation void tank; The methanol fuel storage tank is formed by the outer plate of the hull and the fuel tank bulkhead; an isolation tank bulkhead is provided on the outside of the fuel tank bulkhead, and an isolation air tank is provided between the fuel tank bulkhead and the isolation tank bulkhead; it is characterized in that a passage tank for the passage of crew members and equipment is provided between the main deck and the isolation tank bulkhead; a number of laterally distributed passage platforms are provided in the passage tank; a number of structural openings for the passage of crew members or equipment are opened on the passage platform; a main deck hatch cover for entering and exiting the passage tank is provided on the main deck; a ladder for the passage of crew members is provided in the passage tank; a fuel tank hatch cover is provided on the fuel tank bulkhead; a methanol fuel transfer pump is provided in the methanol fuel storage tank, and the top of the methanol fuel transfer pump is located above the fuel tank bulkhead; the passage platform is provided with a structural opening above the methanol fuel transfer pump, and the main deck hatch cover is located above the methanol fuel transfer pump, and a passage for lifting the methanol fuel transfer pump up and down is formed between the isolation tank bulkhead and the main deck; the upper part of the methanol fuel transfer pump is passed through The cofferdam bulkhead, the top of the methanol fuel delivery pump is located in the passage tank; or, the top of the methanol fuel delivery pump is located in the cofferdam empty tank; the cofferdam bulkhead is provided with a first through hole for the methanol fuel delivery pump to enter and exit above the methanol fuel delivery pump; the top of the fuel tank hatch cover is located in the cofferdam empty tank, and the cofferdam bulkhead is provided with a second through hole above the fuel tank hatch cover; or, the top of the fuel tank hatch cover is located in the passage tank, and the main body of the fuel tank hatch cover is passed through the cofferdam bulkhead; the passage tank includes a passage tank enclosure for enclosing a passage tank; the top of the passage tank enclosure is fixed to the main deck, and the bottom of the passage tank enclosure is fixed to the cofferdam bulkhead; vertically distributed partitions are provided in the passage tank, and passage holes are opened on the partitions; the methanol fuel storage tank is located below the lowest waterline of the ship; the ship has a double bottom, the methanol fuel storage tank is located in the space of the double bottom of the ship, a pipe tank is provided in the space of the double bottom of the ship, and a functional cabin is provided between the cofferdam empty tank and the pipe tank.

2. The dual-fuel ship methanol fuel storage tank arrangement according to claim 1, characterized in that: A ladder hole is provided on the bulkhead of the isolation compartment. There are multiple ladders in the passage compartment, one of which is passed through the ladder hole. The lower part of the ladder passed through the ladder hole extends to the upper part of the fuel tank bulkhead.

3. The dual-fuel ship methanol fuel storage tank arrangement according to claim 2, characterized in that: The fuel tank bulkhead includes transverse wall plates distributed transversely, and the transverse wall plates are located below the ladder hole; the bottom of the ladder passing through the ladder hole extends to the top of the transverse wall plates.

4. The dual-fuel ship methanol fuel storage tank arrangement according to claim 3, characterized in that: The fuel tank hatch cover is installed on the transverse wall plate.

5. The dual-fuel ship methanol fuel storage tank arrangement according to claim 1, characterized in that: The access platform and the main deck are provided with a structural opening reserved space above the methanol fuel delivery pump for opening a structural opening when needed.

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