B-type cabin drop plate arrangement structure

Abstract

The application discloses a B-type cabin drop plate arrangement structure, which comprises a drop plate arranged below an independent liquid cabin, the independent liquid cabin comprising a liquid cabin shell and a heat insulation layer protection shell arranged outside the liquid cabin shell; a plurality of supporting pads for supporting the independent liquid cabin are arranged between the liquid cabin shell and an inner bottom plate of a ship body; the drop plate is arranged between the heat insulation layer protection shell and the inner bottom plate of the ship body; a reinforcing structural member is fixedly arranged on the drop plate, the reinforcing structural member is fixedly connected with a meshed connecting member, and the meshed connecting member is fixedly connected with the supporting pads; and the drop plate is hung between the supporting pads through the meshed connecting member. The application can simply and quickly arrange the drop plate according to needs, improves the safety of the ship body structure, reduces the construction difficulty, saves the construction time, and saves the cost of a shipyard.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to a B-type tank drip tray arrangement structure. Background Technology

[0002] According to the regulations of the International Maritime Organization, the main types of cargo tanks for ships transporting liquefied gases in bulk are membrane cargo tanks and independent cargo tanks. Independent cargo tanks can be further divided into three types: Type A, Type B, and Type C. Type A requires a complete secondary bulkhead, Type B requires a partial secondary bulkhead, and Type C is a pressure vessel and does not require a secondary bulkhead.

[0003] With the development of low-carbon and emission-reducing ships, the demand for Type B fuel tankers, Type B LNG carriers, and Type B LPG carriers is increasing.

[0004] Type B fuel tanks are typically equipped with drip trays. When a leak occurs in an independent Type B tank, the cryogenic liquid flows along the leak channel between the insulation layer and the tank, and is collected in the corresponding drip tray by several guide pipes located at the bottom of the tank, preventing damage to the hull from the cryogenic liquid leak.

[0005] The utility model patent with authorization announcement number CN218032621U discloses a cryogenic liquid leakage handling system applied to independent storage tanks; the patent provides a detailed description of the function of the traditional drip tray.

[0006] Traditional drip trays are bolted to elbow plates welded to the bottom plate of the hull, serving to secure the drip tray. The drip tray prevents cryogenic liquids from splashing onto the hull structure. However, when the liquid cargo temperature is low, such as when loading LNG, the hull structure near the drip tray will experience lower temperatures due to heat conduction, posing a risk of cryogenic brittle fracture.

[0007] Furthermore, in existing technical solutions, to increase the liquid tank capacity, the clearance between the liquid tank and the hull is already small, and a large number of support blocks are arranged, limiting the space for the drip tray elbow plate. In order to arrange the drip tray, the clearance between the liquid tank and the hull must be increased, reducing the liquid tank capacity and decreasing the economic efficiency of the transport ship or fuel tank. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a B-type chamber drip tray arrangement structure.

[0009] The present invention solves the above-mentioned technical problems through the following technical solution:

[0010] A type B tank drip tray arrangement structure includes a drip tray located below an independent liquid tank, which is situated above the hull bottom plate. The independent liquid tank includes a tank shell and an insulating protective shell located outside the tank shell. Multiple support pads for supporting the independent liquid tank are provided between the tank shell and the hull bottom plate. The drip tray is positioned between the insulating protective shell and the hull bottom plate. A reinforcing structural member is fixed to the drip tray, and the reinforcing structural member is connected to a mesh connector, which is connected to the support pads. The drip tray is suspended between the support pads via the mesh connector.

[0011] The reinforcing structural components include an upper reinforcing member located at the top of the drip tray and a lower reinforcing member located at the bottom of the drip tray. The mesh connector includes an upper mesh component connected to the upper reinforcing member and a lower mesh component connected to the lower reinforcing member.

[0012] The support pads include liquid tank side pads fixed to the liquid tank shell and hull side pads fixed to the bottom plate inside the ship; the upper mesh component is connected to the liquid tank side pads, and the lower mesh component is connected to the hull side pads.

[0013] The liquid tank side pad includes a liquid tank side pad panel and a liquid tank side pad baffle. The liquid tank side pad baffle is fixed to the liquid tank side pad panel, and the upper mesh component is connected to the liquid tank side pad baffle.

[0014] The hull side pad includes a hull side pad panel and a hull side pad baffle. The hull side pad baffle is fixed to the hull side pad panel, and the lower mesh component is connected to the hull side pad baffle.

[0015] The upper reinforcing member includes an upper longitudinal reinforcing rib and an upper transverse reinforcing rib, with the upper longitudinal reinforcing rib fixed to the upper transverse reinforcing rib; both the upper longitudinal reinforcing rib and the upper transverse reinforcing rib are fixed to the top of the drip tray.

[0016] The lower reinforcing member includes a lower longitudinal reinforcing rib and a lower transverse reinforcing rib, with the lower longitudinal reinforcing rib fixed to the lower transverse reinforcing rib; both the lower longitudinal reinforcing rib and the lower transverse reinforcing rib are fixed to the bottom of the drip tray.

[0017] The upper mesh component includes an upper horizontal pull rope and an upper vertical pull rope. The upper horizontal pull rope is connected to the upper vertical pull rope, and the upper horizontal pull rope and the upper vertical pull rope form a mesh.

[0018] In the preferred embodiment, both the upper horizontal tension rope and the upper vertical tension rope are made of steel wire rope.

[0019] The lower mesh component includes a lower horizontal pull rope and a lower vertical pull rope. The lower horizontal pull rope is connected to the lower vertical pull rope, and the lower horizontal pull rope and the lower vertical pull rope form a mesh.

[0020] In the preferred embodiment, both the lower horizontal pull rope and the lower vertical pull rope are composite ropes.

[0021] The beneficial effects of this invention are as follows: The drip tray adopts a suspended design, maintaining a certain distance between the drip tray and the insulation layer protective shell, and between the drip tray and the hull bottom plate, which facilitates the evaporation of cryogenic liquids and improves evaporation efficiency. The suspended design also saves space, making full use of the limited space between the independent liquid tank and the hull. The connection between the drip tray and the support pads uses a mesh connector, which can be modularized, simplifying the setup and allowing for convenient placement of the drip tray between the support pads. Additional connectors can be added between different support pads, maximizing the use of compact space. The drip tray arrangement structure of this invention eliminates the need for a separate elbow plate for the drip tray, thus reducing construction difficulty. This modular design allows for the simple and quick placement of the drip tray between the support pads at the bottom of the B-type tank, improving the safety of the hull structure, reducing construction difficulty, saving construction time, and saving costs for shipyards. This invention is applicable to both the renovation of existing B-type tanks and the construction of new B-type tanks, offering broad application possibilities. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a preferred embodiment of the present invention.

[0023] Figure 2 for Figure 1 Enlarged diagram of part A in the middle.

[0024] Figure 3 This is a longitudinal sectional view of a preferred embodiment of the present invention.

[0025] Figure 4 for Figure 3 Enlarged schematic diagram of part B in the middle.

[0026] Figure 5 This is a top view of the drip tray according to a preferred embodiment of the present invention.

[0027] Figure 6 This is a bottom view of the drip tray according to a preferred embodiment of the present invention. Detailed Implementation

[0028] The present invention will be described more clearly and completely below with reference to a preferred embodiment and the accompanying drawings.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a type B tank drip tray arrangement structure includes a drip tray 60 located below an independent liquid tank 10, which is located above the bottom plate 21 inside the ship.

[0030] The independent liquid tank 10 includes a tank shell 11 and an insulating protective shell 13 located outside the tank shell. An insulating layer and a leakage channel 12 are provided between the tank shell 11 and the insulating protective shell 13. The outermost part of the independent liquid tank is provided with an insulating protective shell to prevent water vapor intrusion.

[0031] The drip tray 60 is located between the insulation layer protective shell 13 and the hull bottom plate 21. The drip tray does not contact the insulation layer protective shell or the hull bottom plate; that is, there is a certain distance between the drip tray and the insulation layer protective shell, and between the drip tray and the hull bottom plate.

[0032] Multiple support blocks 70 for supporting independent liquid tanks are provided between the liquid tank shell 11 and the bottom plate 21 inside the ship.

[0033] The support pad 70 includes a tank-side pad 30 fixed to the tank shell and a hull-side pad 40 fixed to the hull bottom plate. Laminated wood 50 is provided between the tank-side pad 30 and the hull-side pad 40. The placement of laminated wood between the tank-side pad and the hull-side pad reduces the risk of low-temperature damage to the hull.

[0034] The tank side pad 30 includes a tank side pad panel 31 and a tank side pad baffle 32. The tank side pad panel 31 abuts against the top of the laminated wood 50; the tank side pad baffle 32 is fixed to the tank side pad panel 31. The tank side pad baffle 32 extends downward.

[0035] The hull side pad 40 includes a hull side pad panel 41 and a hull side pad baffle 42. The hull side pad panel 41 abuts against the bottom of the laminated wood 50; the hull side pad baffle 42 is fixed to the hull side pad panel 41. The hull side pad baffle 42 extends upward.

[0036] A reinforcing structural member is fixed to the drip tray 60, and a mesh connector is connected to the reinforcing structural member. The mesh connector is connected to the support pad 70. The drip tray 60 is suspended between the support pads 70 through the mesh connector.

[0037] In this embodiment, the reinforcing structural members include an upper reinforcing member disposed at the top of the drip tray and a lower reinforcing member disposed at the bottom of the drip tray.

[0038] The upper reinforcing member includes an upper longitudinal reinforcing rib 61 and an upper transverse reinforcing rib 65, with the upper longitudinal reinforcing rib 61 fixedly connected to the upper transverse reinforcing rib 65; both the upper longitudinal reinforcing rib 61 and the upper transverse reinforcing rib 65 are fixedly connected to the top of the drip tray 60. The upper longitudinal reinforcing rib and the upper transverse reinforcing rib form a mesh.

[0039] The lower reinforcing member includes a lower longitudinal reinforcing rib 62 and a lower transverse reinforcing rib 66, with the lower longitudinal reinforcing rib 62 fixedly connected to the lower transverse reinforcing rib 66; both the lower longitudinal reinforcing rib 62 and the lower transverse reinforcing rib 66 are fixedly connected to the bottom of the drip tray 60. The lower longitudinal reinforcing rib and the lower transverse reinforcing rib form a mesh.

[0040] In this embodiment, the mesh connector includes an upper mesh component connected to the upper reinforcing member and a lower mesh component connected to the lower reinforcing member.

[0041] The upper mesh component is connected to the liquid tank side pad 30, and the lower mesh component is connected to the hull side pad 40. Further, the upper mesh component is connected to the liquid tank side pad baffle 32; the lower mesh component is connected to the hull side pad baffle 42.

[0042] The upper mesh component includes an upper transverse pull rope 63 and an upper longitudinal pull rope 67. The upper transverse pull rope 63 is connected to the upper longitudinal pull rope 67, and the upper transverse pull rope 63 and the upper longitudinal pull rope 67 form a mesh.

[0043] The lower mesh component includes a lower transverse pull rope 64 and a lower longitudinal pull rope 68. The lower transverse pull rope 64 is connected to the lower longitudinal pull rope 68, and the lower transverse pull rope 64 and the lower longitudinal pull rope 68 form a mesh.

[0044] In the preferred embodiment, both the upper transverse tension rope 63 and the upper longitudinal tension rope 67 are steel wire ropes made of low-temperature steel. Both the lower transverse tension rope 64 and the lower longitudinal tension rope 68 are composite ropes made of low-temperature resistant composite materials.

[0045] In other embodiments, the upper transverse and upper longitudinal ropes may also be made of composite ropes made of low-temperature resistant composite materials; the lower transverse and lower longitudinal ropes may also be made of steel wire ropes made of low-temperature steel.

[0046] The connection between the upper mesh component and the upper reinforcing member, and between the upper mesh component and the liquid tank side pad baffle, is achieved by opening through holes in the upper reinforcing member and the liquid tank side pad baffle, through which the upper mesh component passes. This connection method is also applicable to the connection between the lower mesh component and the lower reinforcing member, and between the lower mesh component and the hull side pad baffle.

[0047] In other embodiments, the connection methods between the upper mesh component and the upper reinforcing member, and between the upper mesh component and the liquid tank side pad baffle, as well as the connection methods between the lower mesh component and the lower reinforcing member, and between the lower mesh component and the hull side pad baffle, may also adopt other connection methods besides those described above.

[0048] In this embodiment, the upper and lower reinforcing members have the same mesh density; however, the upper and lower mesh components have different mesh densities. The lower mesh component has a lower mesh density than the upper mesh component. Furthermore, the mesh density of the portion of the lower mesh component closest to the support pad is lower than the mesh density of other portions of the lower mesh component, specifically as follows: Figure 6 As shown in the image. This structure helps prevent low temperatures from being transferred to the ship's hull structure.

[0049] In this invention, the drip tray adopts a suspended design, and a certain distance is maintained between the drip tray and the insulation layer protective shell, and between the drip tray and the bottom plate inside the ship. This is conducive to the evaporation of the cryogenic liquid, improves the evaporation efficiency of the cryogenic liquid, and facilitates the rapid discharge of leaked liquid outside the ship.

[0050] In this invention, the suspended design of the drip tray saves layout space and makes full use of the limited space between the independent liquid tank and the hull.

[0051] In this invention, the connection between the drip tray and the support pad is made of a mesh connector. The mesh connector can be modularized, which is simple to set up and allows the drip tray to be easily arranged between the support pads. It can be added between different support pads to maximize the use of compact space.

[0052] The drip tray arrangement structure of the present invention eliminates the need for a separate elbow plate for the drip tray, thereby reducing the difficulty of construction.

[0053] The drip tray arrangement structure of this invention adopts a modular design concept. Under the premise of ensuring ship safety, the drip tray can be simply and quickly arranged between the support pads at the bottom of the B-type tank as needed, thereby improving the safety of the hull structure; reducing construction difficulty, saving construction time, and saving costs for shipyards.

[0054] This invention is applicable to both the retrofitting of existing B-type cabins and the construction of new B-type cabins, and has a wide range of applications.

[0055] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A type B tank drip tray arrangement structure, comprising a drip tray located below an independent liquid tank, the independent liquid tank being positioned above the hull bottom plate; the independent liquid tank comprising a tank shell and a heat-insulating protective shell located outside the tank shell; a plurality of support pads for supporting the independent liquid tank being provided between the tank shell and the hull bottom plate; characterized in that, The drip tray is located between the insulation layer protective shell and the bottom plate of the hull; a reinforcing structural member is fixed on the drip tray, and the reinforcing structural member is connected to a mesh connector, which is connected to a support pad; the drip tray is suspended between the support pads through the mesh connector; the reinforcing structural member includes an upper reinforcing member at the top of the drip tray and a lower reinforcing member at the bottom of the drip tray; the mesh connector includes an upper mesh component connected to the upper reinforcing member and a lower mesh component connected to the lower reinforcing member; the upper mesh component includes an upper transverse pull rope and an upper longitudinal pull rope, the upper transverse pull rope being connected to the upper longitudinal pull rope, the upper transverse pull rope and the upper longitudinal pull rope forming a mesh; the lower mesh component includes a lower transverse pull rope and a lower longitudinal pull rope, the lower transverse pull rope being connected to the lower longitudinal pull rope, the lower transverse pull rope and the lower longitudinal pull rope forming a mesh.

2. The B-type chamber drip tray arrangement structure as described in claim 1, characterized in that, The support pads include liquid tank side pads fixed to the liquid tank shell and hull side pads fixed to the bottom plate inside the ship; the upper mesh component is connected to the liquid tank side pads, and the lower mesh component is connected to the hull side pads.

3. The B-type chamber drip tray arrangement structure as described in claim 2, characterized in that, The liquid tank side pad includes a liquid tank side pad panel and a liquid tank side pad baffle. The liquid tank side pad baffle is fixed to the liquid tank side pad panel, and the upper mesh component is connected to the liquid tank side pad baffle.

4. The B-type chamber drip tray arrangement structure as described in claim 2, characterized in that, The hull side pad includes a hull side pad panel and a hull side pad baffle. The hull side pad baffle is fixed to the hull side pad panel, and the lower mesh component is connected to the hull side pad baffle.

5. The B-type chamber drip tray arrangement structure as described in claim 1, characterized in that, The upper reinforcing member includes an upper longitudinal reinforcing rib and an upper transverse reinforcing rib, with the upper longitudinal reinforcing rib fixed to the upper transverse reinforcing rib; both the upper longitudinal reinforcing rib and the upper transverse reinforcing rib are fixed to the top of the drip tray.

6. The B-type chamber drip tray arrangement structure as described in claim 1, characterized in that, The lower reinforcing member includes a lower longitudinal reinforcing rib and a lower transverse reinforcing rib, with the lower longitudinal reinforcing rib fixed to the lower transverse reinforcing rib; both the lower longitudinal reinforcing rib and the lower transverse reinforcing rib are fixed to the bottom of the drip tray.

7. The B-type chamber drip tray arrangement structure as described in claim 1, characterized in that, Both the upper horizontal and upper vertical tension ropes are steel wire ropes.

8. The B-type chamber drip tray arrangement structure as described in claim 1, characterized in that, Both the lower horizontal and lower vertical ropes are composite ropes.

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