A shared ship LNG fuel tank container

Abstract

The present invention discloses a shared ship LNG fuel tank container, which belongs to the field of LNG fuel storage technology. The shared ship LNG fuel tank container includes: a lifting frame; a tank body, which is arranged in the lifting frame; a cold box structure, which is arranged in the lifting frame and connected to the tank body; a storage box, which is arranged in the lifting frame and connected to the end face of the cold box structure away from the tank body; and a liquid collection tray, which is arranged at the bottom of the storage box. The shared ship LNG fuel tank container of the present invention can complete the reloading operation when the ship docks and unloads, without the need for waiting time for refueling, and the fuel supply is fast.

Description

Technical Field

[0001] The present invention relates to the technical field of LNG fuel storage, and in particular to an LNG fuel tank container for a shared ship. Background Art

[0002] The development of LNG (Liquefied Natural Gas) powered ships has not seen any breakthroughs in more than a decade. Newly built or renovated ships have been out of service for a long time, mainly due to the supply of LNG fuel.

[0003] In the existing technology, LNG fuel tank containers are fixed on ships. When refueling, they need to berth at a dedicated coastal gas station or water refueling pontoon. After connecting the filling pipeline through the equipment of the above infrastructure, LNG fuel is replenished. However, this will make the filling process of the LNG fuel tank container difficult to connect, the pipeline is long, the liquid source is greatly wasted, and the filling time is long. Summary of the Invention

[0004] The present invention provides a shared ship LNG fuel tank container, which solves or partially solves the technical problems in the prior art of difficult docking during the filling process of LNG fuel tank containers, long pipelines, large liquid source waste, and long filling time.

[0005] In order to solve the above technical problems, the present invention provides a shared ship LNG fuel tank container including: a lifting frame; a tank body, arranged in the lifting frame; a cold box structure, arranged in the lifting frame and connected to the tank body; a storage box, arranged in the lifting frame and connected to the end face of the cold box structure facing away from the tank body; and a liquid collection tray, arranged at the bottom of the storage box.

[0006] Furthermore, the lifting frame includes: a first lifting end frame; a second lifting end frame; two top side beams, whose ends are respectively connected to the top of the first lifting end frame and the second lifting end frame, and the two top side beams are provided with reinforcements, and the reinforcements are in conflict with the middle of the tank body; two bottom side beams, whose ends are respectively connected to the bottom of the first lifting end frame and the second lifting end frame; a plurality of saddles arranged at intervals, whose ends are connected to the two bottom side beams, and the middle of the tank body is in conflict with the plurality of saddles; two oppositely arranged gooseneck trough longitudinal beams, connected to the first lifting end frame and the corresponding bottom side beams, and the first end of the tank body is in conflict with the gooseneck trough longitudinal beams; a cold box support assembly, arranged between the first lifting end frame and the second lifting end frame, and connected to the second lifting end frame and the two bottom side beams, the second end of the tank body is in conflict with the cold box support assembly, and the cold box structure is arranged in the cold box support assembly.

[0007] Furthermore, the hoisting frame further includes a plurality of hoisting members arranged between the first hoisting end frame and the second hoisting end frame, and the hoisting members are in conflict with the middle portion of the tank body.

[0008] Furthermore, corner guard plates are provided at the connections between the top side beam and the first hoisting end frame and the second hoisting end frame.

[0009] Furthermore, the cold box support assembly includes: a bottom beam, whose two ends are respectively connected to the two bottom side beams; a web, whose bottom is connected to the bottom beam, and the top of the web is connected to the tank body; a support member, which is connected to the end of the bottom beam away from the second hoisting end frame and conflicts with the tank body; two support beams, which are respectively arranged on the two bottom side beams and connected to both sides of the web; a first reinforcing beam, whose two ends are respectively connected to the two bottom side beams, and reinforcing plates are provided between the first reinforcing beam and the second hoisting end frame and the bottom beam; a second reinforcing beam, whose two ends are respectively connected to the bottom beam and the second hoisting end frame; a reinforcement box, which is connected to the second reinforcing beam and the second hoisting end frame.

[0010] Furthermore, the tank body includes: an outer cylinder body, which is arranged in the lifting frame and connected to the cold box structure, and both ends of the outer cylinder body are provided with a first head; an inner cylinder body, which is arranged in the outer cylinder body, and both ends of the inner cylinder body are provided with a second head, and the inner cylinder body is provided with multiple first reinforcement rings and multiple wave-breaking plates.

[0011] Furthermore, a plurality of second reinforcement rings are provided between the outer cylinder and the inner cylinder; and a heat insulation layer is provided between the outer cylinder and the inner cylinder.

[0012] Furthermore, the cold box structure includes: a skirt, one end of which is connected to the tank body; a panel, the top of which is connected to the other end of the skirt; a bottom plate, both ends of which are respectively connected to the tank body and the bottom of the panel; two side plates, which are arranged opposite to each other, the two ends of the side plates are respectively connected to the tank body and the panel, and the two sides of the side plates are respectively connected to the skirt and the bottom plate.

[0013] Furthermore, the side panels are connected to the skirts via connecting beams, and the connecting beams are connected to the hoisting frame.

[0014] Furthermore, the storage box includes: a first box frame, which is arranged in the lifting frame and connected to the end face of the cold box structure facing away from the tank body; a first box cover, a first end of which is flippably connected to the end face of the first box frame facing away from the cold box structure, and a second end of the first box cover is lockably connected to the end face of the first box frame facing away from the cold box structure; a second box frame, which is arranged in the lifting frame and connected to the end face of the cold box structure facing away from the tank body; a second box cover, a first end of which is flippably connected to the end face of the second box frame facing away from the cold box structure; a third box cover, a first end of which is flippably connected to the second end of the second box cover, and a second end of the third box cover is lockably connected to the end face of the second box frame facing away from the cold box structure.

[0015] Furthermore, the liquid collecting tray includes: a liquid collecting plate, which is connected to the bottom of the end face of the cold box structure away from the tank body; a baffle, which is connected to the end of the liquid collecting plate away from the cold box structure and is connected to the hanging frame to form a liquid collecting space; a liquid collecting sealing plate, the bottom of which is connected to the liquid collecting plate, and the sides are respectively connected to the baffle and the hanging frame to form a accommodating space; a drain valve, which is arranged in the accommodating space and communicated with the liquid collecting space; a drain pipe, which is passed through the baffle and communicated with the drain valve; a discharge pipe, which is arranged in the accommodating space, the liquid inlet of the discharge pipe is arranged at the top of the baffle, and the liquid outlet of the discharge pipe is communicated with the drain pipe.

[0016] Furthermore, the liquid collection tray also includes a three-way joint, a first interface of the three-way joint is connected to the drain valve, a second interface of the three-way joint is connected to the liquid outlet of the discharge pipe, and a third interface of the three-way joint is connected to the drain pipe.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0018] Since the tank body is arranged in the lifting frame, the cold box structure is arranged in the lifting frame and connected to the tank body, the storage box is arranged in the lifting frame and connected to the end face of the cold box structure away from the tank body, and the liquid collection tray is arranged at the bottom of the storage box, the external pipelines and equipment are arranged in the cold box structure to play a role in low-temperature protection. When the LNG fuel in the tank body is used up and needs to be replaced, the pipelines and joints are placed in the storage box to play a role in anti-theft, dustproof, rainproof and aesthetics. When the ship docks and unloads, the lifting frame is lifted by the lifting equipment on the dock to lift the tank body and the cold box structure from the ship, and then the new tank body and cold box structure are lifted onto the ship for use by the ship, and the replacement operation can be completed without waiting time for refueling, and the fuel supply is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A schematic structural diagram of a shared marine LNG fuel tank container provided by an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the lifting frame of the shared marine LNG fuel tank container;

[0021] Figure 3 for Figure 1 Schematic diagram of the tank structure of the China-Shared Marine LNG fuel tank container;

[0022] Figure 4 for Figure 1 Schematic diagram of the cold box structure of the China-Shared Marine LNG fuel tank container;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of the storage box of the China-Shared Marine LNG fuel tank container;

[0024] Figure 6 for Figure 5 Schematic diagram of the interior of the storage box;

[0025] Figure 7 for Figure 1 Schematic diagram of the structure of the liquid collection tray of the China Shared Marine LNG fuel tank container;

[0026] Figure 8 for Figure 7 Enlarged schematic diagram of point A in the middle. DETAILED DESCRIPTION

[0027] See also Figure 1 An embodiment of the present invention provides a shared ship LNG fuel tank container comprising: a hoisting frame 1, a tank body 2, a cold box structure 3, a storage box 4 and a liquid collection tray 5.

[0028] The tank body 2 is arranged in the hoisting frame 1 .

[0029] The cold box structure 3 is arranged in the hoisting frame 1 and connected to the tank body 2.

[0030] The storage box 4 is arranged in the hoisting frame 1 and is connected to the end surface of the cold box structure 3 facing away from the tank body 2.

[0031] The liquid collecting tray 5 is provided at the bottom of the storage box 4 .

[0032] In the specific implementation manner of the present application, since the tank body 2 is arranged in the lifting frame 1, the cold box structure 3 is arranged in the lifting frame 1 and connected to the tank body 2, the storage box 4 is arranged in the lifting frame 1 and connected to the end face of the cold box structure 3 facing away from the tank body 2, and the liquid collection tray 5 is arranged at the bottom of the storage box 4, external pipelines and equipment are arranged in the cold box structure 3 to play a role in low-temperature protection. When the LNG fuel in the tank body 2 is used up and needs to be replaced, the pipelines and joints are placed in the storage box 4 to play a role in anti-theft, dustproof, rainproof and aesthetic. When the ship docks and unloads, the lifting frame 1 is lifted by the lifting equipment on the dock to lift the tank body 2 and the cold box structure 3 from the ship, and then the new tank body 2 and cold box structure 3 are lifted onto the ship for use by the ship. The replacement operation can be completed without the need for waiting time for refueling, and the fuel supply is fast.

[0033] This application adopts a replaceable shared ship LNG fuel tank container. First, it avoids the water refueling of LNG fuel. The vehicle will deliver the lifting frame 1 equipped with the tank body 2, cold box structure 3, storage box 4 and liquid collection tray 5 to the port at a predetermined time. The reloading operation is completed when the ship docks and unloads. There is no need to wait for refueling, and the fuel supply is fast. Secondly, there is no need to build new shore-based or water-based refueling facilities, which reduces the investment in infrastructure capital, and can achieve large-scale application in a short time, effectively realizing the promotion and use of ship LNG fuel. Moreover, as a standardized product, the shared ship LNG fuel tank container avoids the current situation of customized design for ships, reducing development costs and cycles. In addition, the shared ship LNG fuel tank container adopts a tank replacement mode, which is directly operated by the fuel supplier, ensuring price stability and promoting the application of ship LNG fuel.

[0034] See also Figure 2 Specifically, the lifting frame 1 includes: a first lifting end frame 1-1, a second lifting end frame 1-2, a cold box support assembly 1-3, two top side beams 1-4, two bottom side beams 1-5, multiple saddles 1-6 and two gooseneck trough longitudinal beams 1-7.

[0035] The two ends of the two top side beams 1-4 are connected to the top of the first lifting end frame 1-1 and the second lifting end frame 1-2, respectively. Both top side beams 1-4 are equipped with reinforcements 1-10, which contact the middle of the tank body 2. The reinforcements 1-10 increase the structural strength of the top side beams 1-4, preventing deformation of the top side beams 1-4. At the same time, they limit the position of the tank body 2 to prevent it from shaking.

[0036] The two bottom side beams 1-5 are connected to the bottom of the first hoisting end frame 1-1 and the second hoisting end frame 1-2 at both ends. The two top side beams 1-4 and the two bottom side beams 1-5 are used to protect the tank body 2 during hoisting to prevent other objects from hitting the tank body 2 and ensure the safety of the tank body 2.

[0037] The two ends of a plurality of saddles 1-6 arranged at intervals are connected to the two bottom side beams 1-5, and the middle of the tank body is in conflict with the plurality of saddles 1-6. The saddles 1-6 serve as load transfer intervals to support the tank body 2 during transportation.

[0038] Two opposing gooseneck trough longitudinal beams 1-7 are connected to the first hoisting end frame 1-1 and the corresponding bottom side beams 1-5. The first end of the tank body contacts the gooseneck trough longitudinal beams 1-7, and the gooseneck trough longitudinal beams 1-7 can serve as a load transfer area to support the tank body 2. The two opposing gooseneck trough longitudinal beams 1-7 form a longitudinal beam gooseneck trough structure, which meets the requirements of the inspection specifications for shared marine LNG fuel tank containers and can reduce the overall height during transportation and the height during filling.

[0039] The cold box support assembly 1-3 is arranged between the first hoisting end frame 1-1 and the second hoisting end frame 1-2, and is connected to the second hoisting end frame 1-2 and the two bottom side beams 1-5. The second end of the tank body is in conflict with the cold box support assembly 1-3, and the cold box structure 3 is arranged in the cold box support assembly 1-3.

[0040] In this embodiment, the first and second lifting end frames 1-1 and 1-2 form the main body of the lifting frame 1 and simultaneously bear the forces and secure the tank 2 during lifting, transportation, and application. When the tank 2 needs to be lifted, the lifting equipment's sling is connected to the first and second lifting end frames 1-1 and 1-2.

[0041] Specifically, the lifting frame 1 further includes a plurality of lifting pieces 1-8 disposed between the first lifting end frame 1-1 and the second lifting end frame 1-2. The lifting pieces 1-8 interfere with the middle portion of the tank body 2. When the spacing between the first lifting end frame 1-1 and the second lifting end frame 1-2 does not meet the sling size requirements of the lifting equipment, the sling of the lifting equipment can be connected to a lifting piece 1-8 that meets the sling size requirements, thereby increasing the applicability of the sling of the lifting equipment.

[0042] In this embodiment, the lifting member 1-8 can be a 20-foot corner member lifting structure, and each lifting member 1-8 is composed of a closing plate 1-81 and an intermediate upper end beam 1-82 connected to the closing plate 1-81. The closing plate 1-81 is arc-shaped, and the two ends of the closing plate 1-81 are connected to the two ends of the intermediate upper end beam 1-82.

[0043] Specifically, corner guards 1-9 are installed at the junctions between the top side beam 1-4 and the first and second lifting end frames 1-1 and 1-2 to protect the corners during lifting and stacking. Furthermore, the height of the corner guards 1-9 is 5mm-10mm greater than that of the intermediate upper end beam 1-82, preventing interference with components of the shared marine LNG fuel tank container stacked above during stacking.

[0044] Specifically, the cold box support assembly 1-3 includes: a bottom beam 1-31, a web 1-32, a support member 1-33, a first reinforcing beam 1-35, a second reinforcing beam 1-36, a reinforcing box 1-37 and two support beams 1-34.

[0045] Both ends of the bottom beam 1-31 are connected to the two bottom side beams 1-5 respectively.

[0046] The bottom of the web 1-32 is connected to the bottom beam 1-31, and the top of the web 1-32 is connected to the tank body 2. A discharge valve 1-39 is provided on the web 1-32 to discharge condensed water or leaked LNG fuel in the cold box structure to ensure the safety of the equipment in the chamber.

[0047] The support member 1-33 is connected to the end of the bottom beam 1-31 facing away from the second lifting end frame 1-2 and contacts the tank body 2. In this embodiment, due to the large distance between the end of the tank body 2 and the second lifting end frame 1-2, the stress on the bottom support structure is relatively large, and the support member 1-33 relieves the stress. The support member 1-33 is plate-shaped, and its surface contacting the tank body 2 is curved, ensuring the stability of the tank body 2.

[0048] The two supporting beams 1-34 are respectively arranged on the two bottom side beams 1-5 and connected to both sides of the web 1-32.

[0049] The first reinforcing beam 1-35 is connected to the two bottom side beams 1-5 at both ends to ensure the structural strength of the cold box support assembly 1-3. Reinforcing plates 1-38 are provided between the first reinforcing beam 1-35 and the second hoisting end frame 1-2 and the bottom beam 1-5 to ensure the structural strength of the cold box support assembly 1-3.

[0050] Both ends of the second reinforcing beam 1-36 are respectively connected to the bottom beam 1-31 and the second hoisting end frame 1-2 to ensure the structural strength of the cold box support assembly 1-3.

[0051] The reinforcement box 1-37 is connected to the second reinforcement beam 1-36 and the second hoisting end frame 1-2 to ensure the structural strength of the cold box support assembly 1-3.

[0052] In this embodiment, the bottom beam 1-31, web 1-32, support member 1-33, first reinforcing beam 1-35, second reinforcing beam 1-36, reinforcing box 1-37, and two supporting beams 1-34 constitute a connection structure supporting the tank body 2, and also serve as the skeleton of the cold box structure 3. The cold box structure 3 and the tank body 2 share the hoisting frame 1, eliminating the need for a cold box frame, reducing weight, reducing costs, and saving space.

[0053] See also Figure 3 Specifically, the tank body 2 includes an outer cylinder 2-1 and an inner cylinder 2-2.

[0054] The outer cylinder 2-1 is arranged in the hoisting frame 1 and connected to the cold box structure 3. The outer cylinder 2-1 is provided with a first head 2-3 at both ends. The outer cylinder 2-1 and the first head 2-3 serve as the outer shell structure of the tank 2 and bear the external pressure.

[0055] The inner cylinder 2-2 is arranged in the outer cylinder 2-1, and a second head 2-4 is provided at both ends of the inner cylinder 2-2. A plurality of first reinforcement rings 2-5 and a plurality of wave-breaking plates 2-6 are provided in the inner cylinder 2-2. The inner cylinder 2-2 and the second head 2-4 serve as the container structure of the tank body 2, bearing the internal pressure and the medium. Among them, internal pipelines 2-9 are provided between the outer cylinder 2-1 and the inner cylinder 2-2 and in the inner cylinder 2-2 to realize the functions of filling, draining, taking pressure, boosting, and discharging of the tank body 2. The wave-breaking plates 2-6 can reduce the impact of the shaking liquid on the tank body 2. The plurality of first reinforcement rings 2-5 ensure the structural strength of the inner cylinder 2-2 and bear the internal pressure.

[0056] Specifically, a plurality of second reinforcement rings 2-7 are provided between the outer cylinder 2-1 and the inner cylinder 2-2 to ensure the connection strength between the outer cylinder 2-1 and the inner cylinder 2-2.

[0057] Specifically, an insulation layer 2-8 is provided between the outer cylinder 2-1 and the inner cylinder 2-2. The insulation layer 2-8 is formed by winding flame-retardant composite glass fiber aluminum foil paper and is arranged in the tank interlayer to ensure the low-temperature insulation performance of the tank 2.

[0058] In this embodiment, a plurality of radial support members 2 - 10 are provided on the outer wall of the outer cylinder 2 - 1 , so that the radial support members 2 - 10 are supported by external equipment to achieve support for the tank body 2 .

[0059] See also Figure 4 Specifically, the cold box structure 3 includes: a skirt 3-1, a panel 3-2, a bottom plate 3-3 and two side plates 3-4.

[0060] One end of the skirt 3 - 1 is connected to the tank body 2 .

[0061] The top of the panel 3-2 is connected to the other end of the skirt 3-1.

[0062] Both ends of the bottom plate 3-3 are respectively connected to the bottom of the tank body 2 and the panel 3-2, and are used to receive leaked cryogenic media and carry pipeline components arranged in the cold box structure 3, and enclose a closed space of the cold box structure with other structures. Among them, a first cover plate 3-6 is provided between the bottom plate 3-3 and the bottom side beam 1-5 of the lifting frame 1, and there is a gap between the first cover plate 3-6 and the bottom side beam 1-5 to prevent the bottom plate 3-3 from directly adhering to the bottom side beam 1-5, increasing the heat transfer bridge. Therefore, when the low temperature is transferred to the bottom side beam 1-5, the temperature can rise to a level that the bottom side beam 1-5 can withstand, preventing the leaked LNG fuel or low-temperature natural gas from causing low-temperature damage to the bottom side beam 1-5 and ensuring the structural strength of the bottom side beam 1-5. In this embodiment, the shape of the first cover plate 3-6 can be one of U-shaped, "mouth" shaped or "Ji" shaped, so that there is a gap between the first cover plate 3-6 and the side beam 1-3.

[0063] The two side plates 3-4 are arranged oppositely, and both ends of the side plate 3-4 are respectively connected to the tank body 2 and the panel 3-2, and both sides of the side plate 3-4 are respectively connected to the skirt 3-1 and the bottom plate 3-3. Among them, a second cover plate 3-7 is provided on the second lifting end frame 1-2 of the lifting frame 1, and there is a gap between the second cover plate 3-7 and the second lifting end frame 1-2 to prevent the second lifting end frame 1-2 from directly adhering to the side plate 3-4, increasing the heat transfer bridge. Therefore, when the low temperature is transferred to the second lifting end frame 1-2, the temperature can rise to a level that the second lifting end frame 1-2 can withstand, preventing the leaked LNG fuel or low-temperature natural gas from causing low-temperature damage to the second lifting end frame 1-2 and ensuring the structural strength of the second lifting end frame 1-2. In this embodiment, the material of the second cover plate 3-7 is stainless steel. In this embodiment, the shape of the second cover plate 3-7 can be one of U-shaped, "mouth" shaped or "Ji" shaped, so that there is a gap between the second cover plate 3-7 and the side beam 1-3.

[0064] The tank body 2 and the panel 3-2 are connected through the skirt 3-1, the bottom plate 3-3 and the two side plates 3-4, so that the tank body 2 and the panel 3-2 are firmly connected. At the same time, a closed chamber is formed between the tank body 2 and the panel 3-2 to ensure the safety of the equipment arranged in the cold box structure.

[0065] Specifically, the side plate 3-4 is connected to the skirt 3-1 through a connecting beam 3-5, and the connecting beam 3-5 is connected to the lifting frame 1, which is convenient for connecting the skirt 3-1 and the side plate 3-4, and further ensures the structural strength of the cold box structure.

[0066] Specifically, an observation window 3-8 and an airtight door 3-9 are provided on the panel 3-2.

[0067] Observe the shape of the internal pipelines in the chamber and the scales of instruments such as the liquid level gauge through the observation window 3-8. The chamber can be entered by opening the airtight door 3-9 for operation or maintenance. Among them, a sealing sleeve is provided between the airtight door 3-9 and the panel 3-2 to ensure the sealing effect when the airtight door 3-9 is closed and guarantee the airtightness of the chamber. In this embodiment, the material of the sealing sleeve can be rubber.

[0068] In this embodiment, a third cover plate 3-10 is provided on the end surface of the panel 3-2 facing the first head 2-3. In this embodiment, the third cover plate 3-10 is provided on the surface of the non-stainless steel components on the panel 3-2. There is a gap between the third cover plate 3-10 and the panel 3-2, increasing the heat transfer bridge, so that when the low temperature is transferred to the non-stainless steel components on the panel 3-2, the temperature can rise to a level that the non-stainless steel components on the panel 3-2 can withstand, preventing the leaked LNG fuel or low-temperature natural gas from causing low-temperature damage to the non-stainless steel components on the panel 3-2 and ensuring the structural strength of the non-stainless steel components on the panel 3-2. In this embodiment, the material of the third cover plate 3-10 is stainless steel. In this embodiment, the shape of the third cover plate 3-10 can be one of U-shaped, "mouth" shaped or "Ji" shaped to have a gap between the third cover plate 3-10 and the panel 3.

[0069] In this embodiment, a quick-release joint 3-11 for the blow-off port is provided on the panel 3-2. The quick-release joint 3-11 for the blow-off port is connected by a live nut joint, which not only ensures the connection strength but also can be quickly disassembled and assembled.

[0070] In this embodiment, the materials of the skirt 3-1, the panel 3-2, the bottom plate 3-3, the two side plates 3-4, the first cover plate 3-6, the second cover plate 3-7, the observation window 3-8, the airtight door 3-9 and the third cover plate 3-10 can all be stainless steel.

[0071] In this embodiment, for the process pipelines for fuel supply and the security monitoring electrical components, the cold box structure 3 includes external pipelines 6 such as filling, gas phase, boosting, gasification, overflow, gas supply, differential pressure, purging, circulating water, and compressed air, and there are also electrical components such as pressure, liquid level, temperature transmitters, pneumatic solenoid valves, and quick-insert cable connectors. A tank detection device that can be wirelessly remotely transmitted is also provided in the cold box structure 3 to realize real-time monitoring of the pressure, liquid level, temperature, and position of the tank body 2 on the ground, facilitating the deployment of the shared marine LNG fuel tank container on the ground.

[0072] See Figure 5-6 , specifically, the storage box 4 includes: a first box frame 4-1, a first box cover 4-2, a second box frame 4-3, a second box cover 4-4 and a third box cover 4-5.

[0073] The first tank frame 4-1 is installed within the hoisting frame 1 and connected to the end face of the cold box structure 3 facing away from the tank body 2. In this embodiment, the first tank frame 4-1 can be equipped with a ventilation inlet quick connector 4-6, a ventilation outlet quick connector 4-7, a gas filling flange 4-8, and a liquid filling flange 4-9. In this embodiment, the ventilation inlet quick connector 4-6 connects to the ventilation inlet of the ship, the ventilation outlet quick connector 4-7 connects to the ventilation outlet of the ship, and the gas filling flange 4-8 and liquid filling flange 4-9 are compatible with ground filling stations.

[0074] The first end of the first box cover 4-2 is reversibly connected to the end face of the first box frame 4-1 facing away from the cold box structure 3. In this embodiment, the first end of the first box cover 4-2 is connected to the end face of the first box frame 4-1 facing away from the cold box structure 3 via a first hinge 4-10. The second end of the first box cover 4-2 is lockably connected to the end face of the first box frame 4-1 facing away from the cold box structure 3. In this embodiment, the second end of the first box cover 4-2 is connected to the end face of the first box frame 4-1 facing away from the cold box structure 3 via a first box lock 4-11.

[0075] The second box frame 4-3 is arranged in the hoisting frame 1 and is connected to the end face of the cold box structure 3 facing away from the tank body 2. The second box frame 4-3 is provided with an air supply hose 4-12, a circulating water outlet hose 4-13, a circulating water inlet hose 4-14, a compressed gas hose 4-15, a purge hose 4-16, a purge quick connector 4-17, a compressed air quick connector 4-18, a circulating water inlet quick connector 4-19, a circulating water outlet quick connector 4-20, and an air supply dry quick connector 4-21. In this embodiment, to prevent water and dust, the ventilation inlet quick connector 4-6, the ventilation outlet quick connector 4-7, the purge quick connector 4-17, the compressed air quick connector 4-18, the circulating water inlet quick connector 4-19, the circulating water outlet quick connector 4-20, and the air supply dry quick connector 4-21 are all provided with connector covers. The purge quick connector 4-17 is connected to the nitrogen source on the ship, the compressed air quick connector 4-18 is connected to the compressed air source on the ship, the circulating water inlet quick connector 4-19 is connected to the circulating water inlet on the ship, the circulating water outlet quick connector 4-20 is connected to the circulating water outlet on the ship, and the air supply dry quick connector 4-21 is connected to the air pipe on the ship. In this embodiment, the air supply hose 4-12, the circulating water outlet hose 4-13, the circulating water inlet hose 4-14, the compressed air hose 4-15, and the purge hose 4-16 can be made of stainless steel.

[0076] The first end of the second box cover 4-4 is reversibly connected to the end face of the second box frame 4-3 away from the cold box structure 3. In this embodiment, the first end of the second box cover 4-4 is connected to the end face of the second box frame 4-3 away from the cold box structure 3 through a second hinge 4-22.

[0077] The first end of the third box cover 4-5 is connected to the second end of the second box cover 4-4 in a flip-up manner. In this embodiment, the first end of the third box cover 4-5 is connected to the second end of the second box cover 4-4 via a third hinge 4-23. The second end of the third box cover 4-5 is connected to the end face of the second box frame 4-3 facing away from the cold box structure 3 in a lockable manner. In this embodiment, the second end of the third box cover 4-5 is connected to the end face of the second box frame 4-3 facing away from the cold box structure 3 via a second box lock 4-24.

[0078] When refueling the tank 2 at a ground station, only the first tank cover 4-2 needs to be opened. When refueling on board, the first, second, and third tank covers 4-2, 4-4, 4-5 must all be opened to connect the corresponding pipes and equipment. The second and third tank covers 4-4, 4-5 are hinged and foldable, reducing the space required to open the tank doors.

[0079] See also Figure 7-8 Specifically, the liquid collecting tray 5 includes: a liquid collecting plate 5-1, a baffle 5-2, a liquid collecting sealing plate 5-3, a drain valve 5-4, a drain pipe 5-5 and a discharge pipe 5-6.

[0080] The liquid collecting plate 5 - 1 is connected to the bottom of the end surface of the cold box structure 3 facing away from the tank body.

[0081] The baffle 5-2 is connected to the end of the liquid collecting plate 5-1 away from the cold box structure 3, and is connected to the hanging frame 1 to form a liquid collecting space.

[0082] The bottom of the liquid collecting sealing plate 5-3 is connected to the liquid collecting plate 5-1, and the sides are respectively connected to the baffle 5-2 and the hanging frame 1 to form an accommodating space.

[0083] The drain valve 5 - 4 is provided in the accommodation space and communicates with the liquid collecting space for discharging the accumulated water or LNG on the liquid collecting plate 5 - 1 .

[0084] The drain pipe 5-5 passes through the baffle 5-2 and is connected to the drain valve 5-4, and is used to discharge the accumulated water or LNG on the liquid collecting plate 5-1.

[0085] Drain pipe 5-6 is located within the receiving space. Its inlet is located at the top of baffle 5-2, and its outlet is connected to drain pipe 5-5. When the liquid on liquid collecting plate 5-1 reaches the level of the inlet of drain pipe 5-6, the liquid flows out of drain pipe 5-6, preventing the accumulated liquid in the collecting pan 5 from overflowing.

[0086] Specifically, the liquid collecting tray 5 also includes a three-way joint 5-7, the first interface of the three-way joint 5-7 is connected to the drain valve 5-4, the second interface of the three-way joint 5-7 is connected to the liquid outlet of the discharge pipe 5-5, and the third interface of the three-way joint 5-7 is connected to the drain pipe 5-6.

[0087] The second cover plate 3-7 on the second hoisting end frame 1-2, the panel 3-2 of the cold box structure 3, the liquid collecting plate 5-1, the baffle 5-2, and the liquid collecting sealing plate 5-3 form the enclosure of the liquid collecting pan 5. A gap is provided between the liquid collecting plate 5-1 and the bottom of the second hoisting end frame 1-2, forming a barrier to prevent cryogenic damage to the second hoisting end frame 1-2 caused by overflowing low-temperature LNG.

[0088] The liquid collecting tray 5 reuses the external structure of the hanging frame 1 and the cold box structure 3, and is entirely within the range of the hanging frame 1, with a simple structure and low temperature resistance.

[0089] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A shared marine LNG fuel tank container, characterized in that: include: Lifting frame; A tank body is arranged in the hoisting frame; A cold box structure is provided in the hoisting frame and connected to the tank body; a storage box, disposed in the hoisting frame and connected to the end face of the cold box structure facing away from the tank body; A liquid collecting tray is provided at the bottom of the storage box; The cold box structure includes: a skirt, one end of which is connected to the tank body; A panel, the top of which is connected to the other end of the skirt; A bottom plate, with two ends respectively connected to the bottom of the tank body and the panel; a first covering plate, provided between the bottom plate and the bottom side beam of the hanging frame, with a gap between the first covering plate and the bottom side beam of the hanging frame; Two side panels are arranged opposite to each other, with two ends of the side panels respectively connected to the tank body and the panel, and two sides of the side panels respectively connected to the skirt and the bottom plate; a second covering plate, provided on the second hoisting end frame of the hoisting frame, with a gap between the second covering plate and the second hoisting end frame of the hoisting frame; The tank body comprises: An outer cylinder is provided in the hoisting frame and connected to the cold box structure, and both ends of the outer cylinder are provided with a first head; An inner cylinder is provided in the outer cylinder, both ends of the inner cylinder are provided with a second head, and the inner cylinder is provided with a plurality of first reinforcement rings and a plurality of wave-breaking plates; The storage box includes: A first box frame is provided in the hoisting frame and is connected to the end surface of the cold box structure facing away from the tank body; a first box cover, a first end of which is reversibly connected to an end surface of the first box frame facing away from the cold box structure, and a second end of which is lockably connected to an end surface of the first box frame facing away from the cold box structure; A second box frame is provided in the hoisting frame and is connected to the end face of the cold box structure facing away from the tank body; A second box cover, a first end of which is reversibly connected to an end surface of the second box frame facing away from the cold box structure; The first end of the third box cover is flippably connected to the second end of the second box cover, and the second end of the third box cover is lockably connected to the end surface of the second box frame facing away from the cold box structure.

2. The shared ship LNG fuel tank container according to claim 1, characterized in that: The hoisting frame comprises: First hoisting end frame; Second hoisting end frame; Two top side beams, both ends of which are connected to the top of the first hoisting end frame and the second hoisting end frame respectively, and both top side beams are provided with reinforcements, and the reinforcements are in conflict with the middle part of the tank body; Two bottom side beams, both ends of which are connected to the bottom of the first hoisting end frame and the second hoisting end frame respectively; A plurality of saddles are arranged at intervals, with both ends connected to the two bottom side beams, and the middle portion of the tank body is in conflict with the plurality of saddles; Two oppositely arranged gooseneck trough longitudinal beams are connected to the first hoisting end frame and the corresponding bottom side beams, and the first end of the tank body is in conflict with the gooseneck trough longitudinal beams; A cold box support assembly is arranged between the first hoisting end frame and the second hoisting end frame, and is connected to the second hoisting end frame and the two bottom side beams. The second end of the tank body is connected to the cold box support assembly, and the cold box structure is arranged in the cold box support assembly.

3. The shared ship LNG fuel tank container according to claim 2, characterized in that: The hoisting frame further includes a plurality of hoisting members arranged between the first hoisting end frame and the second hoisting end frame, and the hoisting members are in conflict with the middle portion of the tank body.

4. The shared ship LNG fuel tank container according to claim 2, characterized in that: Corner guard plates are provided at the connections between the top side beam and the first hoisting end frame and the second hoisting end frame.

5. The shared ship LNG fuel tank container according to claim 2, characterized in that: The cold box support assembly includes: A bottom beam, with two ends respectively connected to the two bottom side beams; a web, the bottom of which is connected to the bottom beam, and the top of which is connected to the tank body; a support member connected to the end of the bottom beam away from the second hoisting end frame and in contact with the tank body; Two supporting beams, respectively provided on the two bottom side beams and connected to both sides of the web; A first reinforcing beam, both ends of which are connected to the two bottom side beams respectively, and reinforcing plates are provided between the first reinforcing beam and the second hoisting end frame and the bottom beam; a second reinforcing beam, both ends of which are respectively connected to the bottom beam and the second hoisting end frame; A reinforcement box is connected to the second reinforcement beam and the second hoisting end frame.

6. The shared marine LNG fuel tank container according to claim 1, characterized in that: A plurality of second reinforcement rings are provided between the outer cylinder and the inner cylinder; A heat insulating layer is provided between the outer cylinder and the inner cylinder.

7. The shared ship LNG fuel tank container according to claim 1, characterized in that: The side panels are connected to the skirts via connecting beams, and the connecting beams are connected to the hoisting frame.

8. The shared ship LNG fuel tank container according to claim 1, characterized in that: The liquid collection tray comprises: a liquid collecting plate connected to the bottom of the end surface of the cold box structure facing away from the tank body; a baffle connected to the end of the liquid collecting plate facing away from the cold box structure and connected to the hanging frame to form a liquid collecting space; A liquid collecting sealing plate, the bottom of which is connected to the liquid collecting plate, and the sides of which are respectively connected to the baffle and the hanging frame to form an accommodating space; a drain valve, disposed in the accommodating space and in communication with the liquid collecting space; A sewage pipe is provided through the baffle and is connected with the sewage valve; A discharge pipe is arranged in the accommodating space, a liquid inlet of the discharge pipe is arranged on the top of the baffle, and a liquid outlet of the discharge pipe is communicated with the sewage pipe.

9. The shared ship LNG fuel tank container according to claim 8, characterized in that: The liquid collecting tray further comprises a three-way joint, a first interface of the three-way joint is communicated with the drain valve, a second interface of the three-way joint is communicated with the liquid outlet of the discharge pipe, and a third interface of the three-way joint is communicated with the drain pipe.

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