Modularized air supply unit for open container ship

Abstract

The utility model provides a modularized gas supply unit for an open container ship, which relates to the technical field of ships and comprises a plurality of LNG (liquefied natural gas) tank containers which are arranged in an array and are stacked up and down in at least two layers, the lowermost LNG tank container is detachably and fixedly mounted on a main deck, and the upper LNG tank container is detachably and fixedly mounted on the LNG tank container below the upper LNG tank container; the LNG tank container comprises a rectangular outer box and a tank body. The rectangular outer box comprises a bottom plate, side fixed plates, end fixed plates, side movable plates, end movable plates and a top plate. A plurality of supports and arc-shaped hoops are arranged on the upper end face of the bottom plate in an array mode, arc-shaped mounting grooves are formed in the upper end faces of the supports, the tank body is lapped in the arc-shaped mounting grooves of the supports, the arc-shaped hoops hoop the tank body downwards from the upper portion of the tank body, and the two ends of each arc-shaped hoop are detachably and fixedly installed on the supports; and the tank body is connected with an air supply pipeline which extends out of the end fixing plate and is provided with an air supply quick joint. The gas supply unit is directly installed on the main deck in a modularized design, the ship transportation space is prevented from being occupied, the gas supply unit can be directly and integrally installed and replaced, and the fuel replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a modular air supply unit for an open container ship. Background Art

[0002] Open-top container ships are hatchless container ships designed to transport containers and facilitate loading and unloading, effectively improving loading and unloading efficiency. With the shipping industry's growing emphasis on environmental protection, an increasing number of ships are using LNG as fuel. However, in practice, to maintain a ship's transport capacity, the amount of LNG fuel a ship can carry is limited, limiting its range and necessitating frequent refueling at the port. This not only places high demands on the port's refueling facilities but also slows down refueling times, impacting the ship's efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a modular gas supply unit for an open container ship. The gas supply unit is designed in a modular manner and is directly installed on the main deck of the ship. The gas supply unit uses several LNG tank containers to contain LNG fuel, which not only avoids occupying the transportation space of the ship, but also allows the gas supply unit to be directly replaced as a whole, replacing the existing filling method, greatly improving the fuel replacement efficiency, reducing the requirements for the dock filling facilities, and ensuring the ship's voyage.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A modular gas supply unit for an open container ship, comprising a plurality of LNG tank containers arranged in an array along the width of the hull, the plurality of LNG tank containers being arranged along the length of the hull and stacked in at least two layers, the bottom layer of LNG tank containers being detachably fixedly mounted on the main deck of the hull, and the upper layer of LNG tank containers being detachably fixedly mounted on the LNG tank containers below them;

[0006] Each of the LNG tank boxes comprises a rectangular outer box and a tank body installed in the rectangular outer box, wherein the four corners of the outer wall of the rectangular outer box are provided with lifting ears, and the rectangular outer box comprises a bottom plate, a side fixing plate, an end fixing plate, a side movable plate, an end movable plate and a top plate, wherein the bottom of the side fixing plate and the bottom of the end fixing plate are welded and fixed to the side edge of the upper end surface of the bottom plate, and the vertical side edges of the side fixing plate and the end fixing plate close to each other are welded and fixed; the side movable plate is detachably fixedly installed on the side of the bottom plate and the end fixing plate away from the side fixing plate, the top plate is detachably fixedly installed on the upper end of the side fixing plate, the end fixing plate and the side movable plate, and the end movable plate is detachably fixedly installed on the end of the bottom plate, the side fixing plate, the side movable plate and the top plate away from the end fixing plate;

[0007] The upper end surface of the base plate is provided with a plurality of supports and arc-shaped clamps corresponding to the supports in an array along its length direction, and the upper end surface of each support is provided with an arc-shaped mounting groove opening upward, and the corresponding arc-shaped clamp opening downward corresponds to the arc-shaped mounting groove, and the axes of the arc-shaped mounting groove and the arc-shaped clamp are both arranged along the length direction of the base plate; the tank body is placed in the arc-shaped mounting grooves of several supports and its axis is arranged along the length direction of the base plate, the arc-shaped clamp clamps clamp the tank body from the top downward, and the two ends of the arc-shaped clamps are detachably fixed on the corresponding supports, and the inner walls of the arc-shaped mounting groove and the inner walls of the arc-shaped clamp are provided with elastic pads that fit the outer wall of the tank body; the tank body is connected to an air supply pipe, and the air supply pipe extends out of the end fixing plate and is connected to a gas supply quick connector.

[0008] By adopting the above technical solution, a multi-layer rectangular array of LNG tank containers forms a modular gas supply unit. Several LNG tank containers on the lower layer are detachably fixed to the main deck, while the upper layer is detachably fixed to the LNG tank containers below them. These LNG tank containers are connected to the power combustion unit via gas supply pipes and gas supply quick connectors to supply LNG fuel. This modular gas supply unit, which can be detachably installed directly on the main deck, not only avoids occupying the ship's transport space and allows for the installation of as many LNG tank containers as possible to ensure the ship's endurance, but also allows each group of multi-layer LNG tank containers to be directly replaced as a whole when the LNG fuel is exhausted, without having to open the ship's cabin or other structures. This greatly improves the efficiency of reloading and reduces the requirements for dock filling equipment.

[0009] Each LNG tank container consists of a rectangular outer box and a tank body. The tank body is removably fixed within the rectangular outer box using supports, annular clamps, annular mounting grooves, and elastic pads to ensure stable installation and safe use. The rectangular outer box forms a sealed structure to protect the tank body, preventing it from being directly exposed to the main deck and susceptible to malfunctions due to the harsh environment, thereby ensuring the normal gas supply and safety of the LNG tank container. The elastic pads not only provide cushioning and protection for the outer wall of the tank, but also enhance the effectiveness of the curved clamps and mounting grooves in securing the tank body. Furthermore, the bottom plate, side fixing plates, and end fixing plates of the rectangular outer box are welded together to form a single unit. The side flaps, end flaps, and top plate are removably fixed to this unit, ensuring stable installation and facilitating opening and inspection of the tank body. Compared to rectangular outer boxes with doors on only one side, the operating space is larger, making tank inspection more convenient, ensuring safety, and improving maintenance efficiency.

[0010] Furthermore, the bottom plate is provided with limit plates located at both ends of the tank body and arranged vertically, and the two limit plates are installed on the bottom plate for relative sliding along the length direction of the bottom plate, and the side where the two limit plates are close to each other is provided with an arc groove that cooperates with the end of the tank body close to it, and an elastic protective pad that cooperates with it is provided in the arc groove.

[0011] By adopting the above technical solution, the limiting plates at both ends of the tank body can realize the axis limitation of the tank body from both ends through the arc grooves cooperating with the ends of the tank body, thereby further improving the fixing effect of the tank body. The elastic protective pad can provide buffering protection for both ends of the tank body to ensure the safety of the tank body.

[0012] Furthermore, the side of the bottom plate away from the side fixing plate is provided with a first dovetail strip arranged along its length direction, and the width of the side wall of the first dovetail strip away from the bottom plate is greater than the width of the side wall close to the bottom plate, and the bottom side wall of the side movable plate is provided with a first dovetail groove that cooperates with the first dovetail strip; the side of the end fixing plate away from the side fixing plate is provided with a vertically arranged first fixing strip, the first fixing strip is horizontally slidably installed on the end fixing plate along a direction perpendicular to the length of the first dovetail strip, and the side wall of the side movable plate is provided with a first fixing groove that cooperates with the first fixing strip.

[0013] By adopting the above technical solution, with the cooperation of the first dovetail bar and the first dovetail groove, the opposite side movable plate is limited along the width direction and the vertical direction of the base plate, and with the cooperation of the first fixing bar and the first fixing groove, the opposite side movable plate is limited along the length direction of the base plate, thereby realizing the detachable fixed installation of the side fixing plate on the side of the base plate and the end fixing plate away from the side fixing plate. The structure is simple and extremely convenient to operate.

[0014] Furthermore, the upper ends of the side fixing plates and the upper ends of the side movable plates are respectively provided with second dovetail strips arranged along their length directions, the upper end width of the second dovetail strips is greater than the lower end width, and second dovetail grooves cooperating with the corresponding second dovetail strips are provided on both sides of the bottom of the top plate; the upper end of the end fixing plate is provided with a second fixing strip arranged along the width direction of the bottom plate and sliding vertically, and the bottom of the top plate is provided with a second fixing groove cooperating with the second fixing strip.

[0015] By adopting the above technical solution, with the cooperation of the second dovetail bar and the second dovetail groove, the top plate is limited along the width direction and the vertical direction of the bottom plate, and with the cooperation of the second fixing bar and the second fixing groove, the top plate is limited along its length direction, thereby realizing the top plate being detachably fixed on the side fixing plate, the end fixing plate and the upper end of the side movable plate, and the top plate and the side movable plate are limited to each other to ensure the stability of their installation. The structure is simple and extremely convenient to operate.

[0016] Furthermore, the top plate and the bottom plate are respectively provided with a third dovetail strip arranged along the width direction thereof at one end away from the end fixing plate, the side width of the third dovetail strip away from the top plate is greater than the side width close to the top plate, and the side wall of the end movable plate is provided with a third dovetail groove cooperating with the third dovetail strip; the side fixing plate and the side movable plate are respectively provided with a vertically arranged third fixing strip at one end away from the end fixing plate, and the third fixing strip is horizontally slidably installed on the corresponding side fixing plate and side movable plate along the length direction of the bottom plate, and the side wall of the end movable plate is provided with a third fixing groove cooperating with the corresponding third fixing strip.

[0017] By adopting the above technical solution, with the cooperation of the third dovetail bar and the third dovetail groove, the end flap is limited along the length direction and the vertical direction of the bottom plate, and with the cooperation of the third fixing bar and the third fixing groove, the end flap is limited along the width direction of the bottom plate, thereby realizing the detachable fixed installation of the end flap on the side fixing plate, the side flap, the bottom plate and the end of the top plate away from the end fixing plate, and the mutual limitation between the end fixing plate, the top plate and the side flap, further improving the overall stability of the rectangular outer box, and its structure is simple and extremely convenient to operate.

[0018] Furthermore, the side fixing plate and the side movable plate are provided with a guide groove cooperating with the third fixing bar at one end away from the end fixing plate, and the side fixing plate and the side movable plate are also provided with a drive groove arranged along their length direction, and the drive groove is located above or below the guide groove and is connected with the guide groove; a drive screw arranged along its length direction is positioned and rotatably installed in the drive groove, and the third fixing bar is provided with a drive block slidably installed in the drive groove and threadedly connected to the drive screw; the drive screw is connected to a drive motor at one end away from the third fixing bar, and the side walls of the side fixing plate and the side movable plate are provided with a accommodating groove cooperating with the drive motor, and the opening of the accommodating groove near the outer side wall of the corresponding side fixing plate and side movable plate passes through the corresponding side fixing plate and side movable plate, and a protective cover is detachably fixedly installed at its opening.

[0019] By adopting the above technical solution, the drive motor drives the drive screw to rotate. Under the threaded connection between the drive screw and the drive block and the limiting and guiding effect of the drive slot on the drive block, the drive block drives the third fixing bar to slide along the guide slot, thereby sliding the third fixing bar into or out of the third fixing slot. The structure is simple and easy to operate. In particular, the use of the above drive structure to drive the movement of the third fixing bar allows the protective cover to be opened for maintenance in the event of a drive motor failure, ensuring that the limiting effect of the third fixing bar and the third fixing slot can be released from the outside. This avoids the problem of the drive structure being located inside the rectangular outer box, which may cause the end fixing plate to be unable to be opened, while also ensuring the sealing of the rectangular outer box as much as possible.

[0020] Furthermore, a plurality of mounting protrusions are provided in a rectangular array at the bottom of the base plate, a support layer for mounting an air supply unit is provided on the main deck, a gap is provided between the bottom of the support layer and the upper end surface of the main deck, and a plurality of mounting openings are provided in a rectangular array on the support layer that vertically penetrate the support layer and cooperate with corresponding mounting protrusions; each mounting protrusion is provided with a mounting hole that penetrates the protrusion, and the axes of the plurality of mounting holes are parallel to each other and are all arranged along the width direction of the base plate;

[0021] A plurality of fixing plates are arranged in an array along the axis direction of the mounting hole at the bottom of the support layer. The fixing plates are arranged horizontally perpendicular to the axis direction of the mounting hole. A plurality of mounting protrusions along the length direction of the fixing plates form a group. A plurality of the fixing plates and a plurality of groups of mounting protrusions are arranged at intervals, and a plurality of mounting rods that cooperate with the mounting holes on the corresponding mounting protrusions are arranged in an array along the length direction of the fixing plate close to the mounting protrusion; the fixing plate is slidably installed on the bottom of the support layer along the axis direction of the mounting hole, and a telescopic cylinder that drives it to slide is connected to the side away from the mounting rod.

[0022] By adopting the above technical solution, when the lower LNG tank container is installed on the support layer, the mounting protrusions on the lower LNG tank container pass through the mounting clearance openings, and the bottom of the lower LNG tank container directly contacts the support layer. The telescopic cylinder drives the corresponding fixing plate to slide, inserting the plurality of mounting rods into the mounting holes on the corresponding mounting protrusions. The restraining cooperation between the plurality of mounting rods and the mounting holes, and the restraining cooperation between the mounting clearance openings and the mounting protrusions, achieves the fixing of the lower LNG tank container to the support layer. When the gas supply module needs to be replaced, the telescopic cylinder is driven to slide and remove the mounting rods from the corresponding mounting holes, releasing the fixing of the lower LNG tank container, and the multiple layers of LNG tank containers can be hoisted and removed simultaneously. Before replacement, the multiple layers of LNG tank containers can be assembled and fixed at the dock and then directly replaced on the hull. Only the lower layer tank container needs to be fixed, eliminating the need to disassemble and replace the LNG tank containers individually, further improving the efficiency of gas supply module replacement. The above-mentioned installation method for the lower LNG tank container has a simple structure, while ensuring the installation and fixing of the LNG tank container, without the need for loose screws for fixing, facilitating quick fixing and removal.

[0023] Furthermore, a rectangular array on the upper end surface of the top plate is provided with a plurality of mounting grooves that cooperate with the mounting protrusions, and a rectangular array on the top plate is provided with a plurality of through holes. When the upper LNG tank box is installed on the lower LNG tank box, the through holes are coaxially arranged with the mounting holes on the mounting protrusions in the mounting grooves, and a fixing rod arranged along the axial direction thereof is passed through between the coaxial mounting holes and the through holes. Both ends of the fixing rod extend out of the through holes at both ends and are fixed to the side walls of the side fixing plate and the side movable plate through a fixing seat.

[0024] By adopting the above technical solution, when the upper LNG tank container is installed on the lower LNG tank container, the mounting protrusion on the upper LNG tank container is clamped in the mounting groove on the top of the lower LNG tank container, the fixing rod is passed through a number of coaxially arranged mounting holes and through holes, and the two ends of the fixing rod are fixed to the side walls of the side fixing plate and the side walls of the side movable plate by using the fixing seat, so that the upper LNG tank container can be fixed on the lower LNG tank container with limited position, and its structure is simple and easy to operate.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. In this utility model, a modular gas supply assembly is formed by LNG tank containers arranged in a multi-layer rectangular array. The bottom layer of LNG tank containers is directly detachably fixed on the main deck of the ship to supply LNG fuel to the power combustion unit. This not only avoids occupying the ship's transportation space and allows for the installation of as many LNG tank containers as possible to ensure the ship's endurance, but also allows each group of multi-layer LNG tank containers to be directly replaced as a whole when the LNG fuel is exhausted without opening the ship's cabin or other structures, greatly improving the replacement efficiency and reducing the requirements for dock refueling equipment.

[0027] 2. The present invention utilizes special designs of the supporting layer, mounting protrusions, mounting openings, mounting holes, fixing plates, mounting rods, mounting grooves, through-holes, fixing rods, and fixing seats to achieve detachable mounting of the bottom LNG tank container on the main deck and detachable mounting of the upper LNG tank container on the lower LNG tank container. This ensures the installation stability of the LNG tank containers and facilitates their rapid assembly and disassembly.

[0028] 3. The rectangular outer box of the LNG tank box in the present invention includes a welded bottom plate, side fixing plates, end fixing plates, and side movable plates, end movable plates and a top plate that are detachably installed by cooperating with dovetail bars and dovetail grooves and fixing bars and fixing grooves. The rectangular outer box is used to protect the tank body to prevent the tank body from being directly exposed on the main deck and being easily affected by the harsh environment and causing failures, thereby ensuring the normal gas supply and safety of the LNG tank box. Moreover, the three sides of the rectangular outer box are detachable, which is convenient for opening it to inspect the tank body, thereby ensuring safety while improving inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of a modular air supply unit for an open container ship;

[0030] Figure 2 This is a schematic diagram of the explosion structure of an LNG tank container in a modular gas supply unit for an open container ship from one perspective;

[0031] Figure 3 This is a schematic diagram of the explosion structure of the LNG tank in the modular gas supply unit of an open container ship from another perspective;

[0032] Figure 4 This is a partial structural cross-sectional view of the LNG tank in a modular gas supply unit for an open container ship;

[0033] Figure 5 This is a schematic diagram of the explosion structure of an upper and lower group of LNG tank containers in a modular gas supply unit for an open container ship.

[0034] In the figure, 1. Main deck; 11. Support layer; 12. Installation clearance; 13. Fixing plate; 14. Mounting rod; 15. Telescopic cylinder; 2. LNG tank container; 3. Rectangular outer box; 30. Lifting lug; 31. Bottom plate; 311. First dovetail strip; 32. Side fixing plate; 33. End fixing plate; 331. First fixing strip; 332. Second fixing strip; 34. Side flap; 341. First dovetail groove; 342. First fixing groove; 35. End flap; 351. Third dovetail groove; 352. Third fixing groove; 36. Top plate; 361. Second dovetail groove; 362. Second fixing groove ; 37. Second dovetail strip; 38. Third dovetail strip; 4. Third fixing strip; 41. Guide groove; 42. Drive groove; 43. Drive screw rod; 44. Drive block; 45. Drive motor; 46. Accommodation groove; 47. Protective cover; 5. Mounting protrusion; 51. Mounting hole; 52. Mounting groove; 53. Through hole; 54. Fixing rod; 55. Fixing seat; 6. Tank body; 61. Support; 62. Arc-shaped mounting groove; 63. Arc-shaped clamp; 64. Elastic cushion; 65. Air supply pipe; 66. Air supply quick connector; 67. Limiting plate; 68. Arc-shaped groove; 69. Elastic protective pad. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] A modular air supply unit for an open container ship, such as Figure 1As shown, the system includes a plurality of LNG tank containers 2 arranged in an array along the width of the hull. The plurality of LNG tank containers 2 are arranged along the length of the hull and stacked in at least two layers. The bottommost LNG tank container 2 is detachably fixedly mounted on the main deck 1 of the hull, and the upper LNG tank container 2 is detachably fixedly mounted on the LNG tank container 2 below it. In this embodiment, the array includes six LNG tank containers 2, arranged in two layers. The modular gas supply unit is directly detachably mounted on the main deck 1 to supply LNG fuel to the power combustion unit. This not only avoids occupying the ship's transportation space and allows for the installation of as many LNG tank containers 2 as possible to ensure the ship's endurance, but also allows each group of multi-layer LNG tank containers 2 to be directly replaced as a whole when the LNG fuel is exhausted, without having to open the ship's cabin or other structures. This greatly improves the efficiency of reloading and reduces the requirements for dock refueling equipment.

[0037] In this embodiment, if Figure 1 and Figure 2 As shown, each LNG tank box 2 includes a rectangular outer box 3 and a tank body 6 installed in the rectangular outer box 3. The four corners of the outer wall of the rectangular outer box 3 are provided with lifting ears 30 for facilitating the lifting of the entire box. The rectangular outer box 3 includes a bottom plate 31, a side fixing plate 32, an end fixing plate 33, a side movable plate 34, an end movable plate 35 and a top plate 36. The bottom of the side fixing plate 32 and the bottom of the end fixing plate 33 are welded and fixed to the side of the upper end surface of the bottom plate 31. The vertical sides of the side fixing plate 32 and the end fixing plate 33 that are close to each other are welded and fixed, and the three are welded to form a whole. The side flap 34 is detachably fixedly mounted on the side of the bottom plate 31 and the end fixing plate 33 away from the side fixing plate 32, the top plate 36 is detachably fixedly mounted on the side fixing plate 32, the end fixing plate 33 and the upper end of the side flap 34, and the end flap 35 is detachably fixedly mounted on the bottom plate 31, the side fixing plate 32, the side flap 34 and the end of the top plate 36 away from the end fixing plate 33. While ensuring the overall stability of the rectangular outer box 3 and the protection effect on the tank body 6, it is convenient to open the three outer openings of the rectangular outer box 3 to facilitate maintenance of the tank body 6, thereby improving maintenance efficiency while ensuring safety.

[0038] like Figure 2 As shown, to achieve the removable installation of the tank body 6 within the rectangular outer box 3, a plurality of supports 61 and arc-shaped clamps 63 corresponding to the supports 61 are arranged in an array along the length of the upper end surface of the bottom plate 31. The upper end surface of each support 61 is provided with an upward-opening arc-shaped mounting groove 62, and the corresponding arc-shaped clamp 63 is opened downward to correspond to the arc-shaped mounting groove 62. The axes of the arc-shaped mounting groove 62 and the arc-shaped clamp 63 are both arranged along the length of the bottom plate 31. The tank body 6 is placed in the arc-shaped mounting groove 62 of the plurality of supports 61, and its axis is arranged along the length of the bottom plate 31. The arc-shaped clamp 63 clamps the tank body 6 from above and downwards, and the ends of the arc-shaped clamp 63 are removably fixed to the corresponding support 61 by screws or other means.

[0039] Among them, such as Figure 2As shown, elastic cushioning layers 64 are provided on the inner walls of the arc-shaped mounting groove 62 and the inner walls of the arc-shaped clamp 63, which conform to the outer wall of the tank body 6. The elastic protective pad 69 not only provides cushioning protection for the tank body 6, but also improves the fixing effect of the arc-shaped clamp 63 and the arc-shaped mounting groove 62 on the tank body 6. In addition, the tank body 6 is connected to an air supply pipe 65, which extends out of the end fixing plate 33 and is connected to an air supply quick connector 66. The air supply quick connector 66 is connected to the power combustion unit to supply air.

[0040] like Figure 2 As shown, to further improve the fixing effect of the tank body 6, a vertically arranged limit plate 67 is provided on the bottom plate 31 at both ends of the tank body 6. The two limit plates 67 are relatively slidably mounted on the bottom plate 31 along the length direction of the bottom plate 31, and the side of the two limit plates 67 close to each other is provided with an arc-shaped groove 68 that cooperates with the end of the tank body 6 close to them. The arc-shaped groove 68 is provided with an elastic protective pad 69 that cooperates with it. The limit plates 67 at both ends of the tank body 6 limit the axis of the tank body 6 from both ends through the arc-shaped groove 68 that cooperates with the end of the tank body 6, further improving the fixing effect of the tank body 6. The elastic protective pad 69 can provide buffering protection for the two ends of the tank body 6 to ensure the safety of the tank body 6 during use. The sliding installation of the limit plates 67 can be driven by a sliding cylinder, a screw, etc. In this embodiment, a sliding cylinder is used, which is only briefly illustrated in the figure.

[0041] like Figure 2 and Figure 3 As shown, to achieve detachable and fixed installation of the side flap 34, a first dovetail bar 311 is provided along the length of the bottom plate 31, away from the side fixing plate 32. The width of the side wall of the first dovetail bar 311 away from the bottom plate 31 is greater than the width of the side wall close to the bottom plate 31. A first dovetail groove 341 is provided on the bottom side wall of the side flap 34, which cooperates with the first dovetail bar 311. The cooperation between the first dovetail bar 311 and the first dovetail groove 341 limits the position of the side flap 34 along the width and vertical directions of the bottom plate 31. In addition, a vertically arranged first fixing bar 331 is provided on the side of the end fixing plate 33 away from the side fixing plate 32. The first fixing bar 331 is horizontally slidably installed on the end fixing plate 33 along a length direction perpendicular to the first dovetail bar 311, and the side wall of the side movable plate 34 is provided with a first fixing groove 342 that cooperates with the first fixing bar 331. Under the cooperation of the first fixing bar 331 and the first fixing groove 342, the side movable plate 34 is limited along the length direction of the bottom plate 31.

[0042] like Figure 2 and Figure 3As shown, to achieve removable installation of the top panel 36, a second dovetail bar 37 is provided along its length at the upper ends of the side fixing plates 32 and the upper ends of the side flaps 34. The width of the second dovetail bar 37 is greater than its width at the lower end. Second dovetail grooves 361 are provided on both sides of the bottom of the top panel 36, which mate with the corresponding second dovetail bars 37. The cooperation between the second dovetail bars 37 and the second dovetail grooves 361 restrains the top panel 36 along the width and vertical direction of the bottom panel 31. Furthermore, a second fixing bar 332 is provided at the upper end of the end fixing plate 33, which slides vertically along the width of the bottom panel 31. A second fixing groove 362 is provided at the bottom of the top panel 36, which mates with the second fixing bar 332. The cooperation between the second fixing bar 332 and the second fixing groove 362 restrains the top panel 36 along its length.

[0043] like Figure 2 and Figure 3 As shown, to achieve detachable installation of the end flap 35, a third dovetail bar 38 is provided along the width of each of the top plate 36 and the bottom plate 31 at one end away from the end fixing plate 33. The width of the side of the third dovetail bar 38 away from the top plate 36 is greater than the width of the side close to the top plate 36. The side wall of the end flap 35 is provided with a third dovetail groove 351 that cooperates with the third dovetail bar 38. The cooperation between the third dovetail bar 38 and the third dovetail groove 351 limits the position of the end flap 35 along the length and vertical direction of the bottom plate 31. In addition, a vertically arranged third fixing bar 4 is provided at the end of the side fixing plate 32 and the side movable plate 34 away from the end fixing plate 33. The third fixing bar 4 is horizontally slidably installed on the corresponding side fixing plate 32 and side movable plate 34 along the length direction of the bottom plate 31. The side wall of the end movable plate 35 is provided with a third fixing groove 352 that cooperates with the corresponding third fixing bar 4. Under the cooperation of the third fixing bar 4 and the third fixing groove 352, the end movable plate 35 is limited along the width direction of the bottom plate 31.

[0044] like Figure 2 and Figure 3As shown, in this embodiment, the side flaps 34 are removably fixed and installed by the cooperation of the first dovetail bar 311 and the first dovetail groove 341, and the cooperation of the first fixing bar 331 and the first fixing groove 342. The top panel 36 is removably fixed and installed by the cooperation of the second dovetail bar 37 and the second dovetail groove 361, and the cooperation of the second fixing bar 332 and the second fixing groove 362. The end flaps 35 are removably fixed and installed by the cooperation of the third dovetail bar 38 and the third dovetail groove 351, and the cooperation of the third fixing bar 4 and the third fixing groove 352. The side flaps 34, top panel 36, and end flaps 35 are mutually limited, effectively ensuring the overall stability of the rectangular outer box 3. In this embodiment, the first dovetail bar 311, the second dovetail bar 37, and the third dovetail bar 38 are all slightly shorter than the side lengths of the rectangular outer box 3, which facilitates installation and positioning. In addition, the first fixing bar 331 and the second fixing bar 332 are both connected to a sliding cylinder that drives them to slide along their sliding directions. The sliding cylinder is installed on the inner wall of the end fixing plate 33, which is only briefly illustrated in the figure.

[0045] like Figure 4 As shown, in order to avoid the risk that the end flap 35 cannot be opened when the driving structure of the third fixing bar 4 is set in the rectangular outer box 3, and to ensure the sealing of the entire rectangular outer box 3 as much as possible, in this embodiment, a guide groove 41 cooperating with the third fixing bar 4 is provided at the end of the side fixing plate 32 and the side flap 34 away from the end fixing plate 33, and the side fixing plate 32 and the side flap 34 are also provided with a driving groove 42 set along the length direction thereof, and the driving groove 42 is located above or below the guide groove 41 and is connected to the guide groove 41; a driving screw 43 set along the length direction thereof is positioned and rotatably installed in the driving groove 42, and a driving block 44 slidably installed in the driving groove 42 and threadedly connected to the driving screw 43 is provided on the third fixing bar 4. The end of the driving screw 43 away from the third fixing bar 4 is connected to the driving motor 45. The side walls of the side fixing plate 32 and the side flap 34 are provided with a receiving groove 46 that cooperates with the driving motor 45. The opening of the receiving groove 46 near the outer wall of the rectangular outer box 3 passes through the corresponding side fixing plate 32 and the side flap 34, and a protective cover 47 (marked on the bottom) is detachably fixed to the opening. Figure 2 and Figure 3 middle).

[0046] like Figure 4 As shown, the drive motor 45 drives the drive screw 43 to rotate, which in turn drives the drive block 44 to cause the third fixing bar 4 to slide along the guide groove 41, thereby sliding the third fixing bar 4 into or out of the third fixing groove 352. This drive structure allows the protective cover 47 to be opened for maintenance in the event of a malfunction of the drive motor 45, ensuring that the limiting effect of the third fixing bar 4 and the third fixing groove 352 can be released from the outside, thereby preventing the end flap 35 from being unable to open and affecting the maintenance of the tank body 6.

[0047] like Figure 3 and Figure 5 As shown, to achieve the removable and fixed installation of the bottom LNG tank 6 on the main deck 1, a number of mounting bumps 5 are arranged in a rectangular array on the bottom of the bottom plate 31. A support layer 11 for mounting the gas supply unit is provided on the main deck 1. A certain gap is provided between the bottom of the support layer 11 and the upper end surface of the main deck 1. A number of mounting holes 12 are arranged in a rectangular array on the support layer 11, vertically extending through the support layer 11 and mating with corresponding mounting bumps 5. Each mounting bump 5 is provided with a mounting hole 51 extending therethrough. The axes of the mounting holes 51 are parallel to each other and are arranged along the width of the bottom plate 31.

[0048] like Figure 3 and Figure 5 As shown, a number of fixing plates 13 are arranged in an array along the axis of the mounting holes 51 at the bottom of the support layer 11. The fixing plates 13 are arranged horizontally and perpendicular to the axis of the mounting holes 51. Several mounting protrusions 5 along the length of the fixing plates 13 are grouped together, with the fixing plates 13 and the groups of mounting protrusions 5 spaced apart. A number of mounting rods 14 are arranged in an array along the length of the fixing plates 13 on the side closest to the mounting protrusions 5, which mate with the mounting holes 51 on the corresponding mounting protrusions 5. The fixing plates 13 are slidably mounted on the bottom of the support layer 11 along the axis of the mounting holes 51, and a telescopic cylinder 15 is connected to the side away from the mounting rods 14 to drive their sliding movement.

[0049] like Figure 5 As shown, when the lower LNG tank container 2 is installed on the support layer 11, the mounting protrusion 5 on the lower LNG tank container 2 passes through the mounting clearance opening 12, and the bottom of the lower LNG tank container 2 directly contacts the support layer 11. The telescopic cylinder 15 drives the corresponding fixing plate 13 to slide, and the plurality of mounting rods 14 are inserted into the mounting holes 51 on the corresponding mounting protrusions 5. Under the limiting cooperation between the plurality of mounting rods 14 and the mounting holes 51 and the limiting cooperation between the mounting clearance opening 12 and the mounting protrusion 5, the lower LNG tank container 2 is fixedly installed on the support layer 11.

[0050] like Figure 5 As shown, when the gas supply module needs to be replaced, the telescopic cylinder 15 is driven to slide and the mounting rod 14 is pulled out from the corresponding mounting hole 51, thereby releasing the fixing effect on the lower LNG tank box 2, and the multi-layer LNG tank boxes 2 can be hoisted and removed at the same time. Before replacement, the multi-layer LNG tank boxes 2 are assembled and fixed at the dock and then directly replaced on the hull. Only the lower tank box needs to be fixed again, and there is no need to disassemble and replace the LNG tank boxes 2 individually, thereby further improving the replacement efficiency of the gas supply module.

[0051] like Figure 3 and Figure 5As shown, in order to realize the detachable fixed installation of the upper LNG tank body 6 on the LNG tank body 6 below it, a plurality of mounting grooves 52 cooperating with the mounting protrusions 5 are provided in a rectangular array on the upper end surface of the top plate 36, and a plurality of through holes 53 are provided in a rectangular array on the top plate 36. When the upper LNG tank box 2 is installed on the lower LNG tank box 2, the through holes 53 are coaxially arranged and connected with the mounting holes 51 on the mounting protrusions 5 in the mounting grooves 52, and a fixing rod 54 arranged along the axial direction thereof is passed between the coaxial mounting holes 51 and the through holes 53. Both ends of the fixing rod 54 extend out of the through holes 53 at both ends and are fixed to the side walls of the side fixing plate 32 and the side movable plate 34 through the fixing seat 55.

[0052] like Figure 5 As shown, when the upper LNG tank container 2 is installed on the lower LNG tank container 2, the mounting protrusion 5 on the upper LNG tank container 2 is clamped in the mounting groove 52 on the top of the lower LNG tank container 2, the fixing rod 54 is passed through a plurality of coaxially arranged mounting holes 51 and through holes 53, and the two ends of the fixing rod 54 are fixed to the side walls of the side fixing plate 32 and the side walls of the side movable plate 34 by using the fixing seat 55, so that the upper LNG tank container 2 can be fixedly installed on the lower LNG tank container 2 with limited position.

[0053] The working principle and usage of this utility model:

[0054] The lower LNG tank container 2 is placed on the support layer 11 of the main deck 1. Several mounting rods 14 are inserted into the mounting holes 51 on the corresponding mounting bumps 5, securing the lower LNG tank container 2 to the support layer 11. The mounting bumps 5 on the upper LNG tank container 2 are snapped into the mounting grooves 52 on the top of the lower LNG tank container 2. The fixing rods 54 pass through several coaxially arranged mounting holes 51 and through-holes 53. Fixing bases 55 secure the ends of the fixing rods 54 to the side walls of the side fixing plates 32 and the side flaps 34, securing the upper LNG tank container 2 to the lower LNG tank container 2 in a limited position. Several LNG tank containers 2 are connected to the power combustion unit via gas supply pipes 65 and gas supply quick connectors 66, supplying LNG fuel.

[0055] When the gas supply module needs to be replaced, drive the telescopic cylinder 15 to slide and pull the mounting rod 14 out of the corresponding mounting hole 51, thereby releasing the fixing effect on the lower LNG tank box 2, and then the multi-layer LNG tank boxes 2 can be hoisted and removed at the same time. Before replacement, the multi-layer LNG tank boxes 2 are assembled and fixed at the dock and then directly replaced on the hull. Only the lower tank box needs to be fixed again, and there is no need to disassemble and replace the LNG tank boxes 2 individually.

[0056] The LNG tank boxes 2 arranged in a multi-layer rectangular array form a modular gas supply assembly, and the bottom LNG tank boxes 2 are directly detachably fixed on the main deck 1 of the hull. This not only avoids occupying the transportation space of the ship and arranges as many LNG tank boxes 2 as possible to ensure the ship's endurance, but also, after the LNG fuel is used up, each group of multi-layer LNG tank boxes 2 can be directly replaced as a whole without opening the ship's cabin and other structures, which greatly improves the replacement efficiency and reduces the requirements for the dock filling equipment.

[0057] The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge of the relevant art. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A modular air supply unit for an open container ship, characterized by: The invention comprises a plurality of LNG tank boxes (2) arranged in an array along the width direction of the hull, wherein the plurality of LNG tank boxes (2) are arranged along the length direction of the hull and stacked in at least two layers, wherein the LNG tank boxes (2) at the bottom layer are detachably fixedly mounted on the main deck (1) of the hull, and the LNG tank boxes (2) at the top layer are detachably fixedly mounted on the LNG tank boxes (2) below them; Each of the LNG tank boxes (2) comprises a rectangular outer box (3) and a tank body (6) installed in the rectangular outer box (3), wherein the outer wall of the rectangular outer box (3) is provided with lifting ears (30) at the four corners, and the rectangular outer box (3) comprises a bottom plate (31), a side fixing plate (32), an end fixing plate (33), a side movable plate (34), an end movable plate (35) and a top plate (36), wherein the bottom of the side fixing plate (32) and the bottom of the end fixing plate (33) are welded and fixed to the side edge of the upper end surface of the bottom plate (31), and the side fixing plate (32) is provided with a lifting ear (30) at the four corners of the outer wall of the rectangular outer box (3). ) and the end fixing plate (33) are welded and fixed to each other at vertical sides close to each other; the side movable plate (34) is detachably fixedly mounted on the bottom plate (31) and the end fixing plate (33) on a side away from the side fixing plate (32); the top plate (36) is detachably fixedly mounted on the side fixing plate (32), the end fixing plate (33) and the upper end of the side movable plate (34); the end movable plate (35) is detachably fixedly mounted on the bottom plate (31), the side fixing plate (32), the side movable plate (34) and the end of the top plate (36) away from the end fixing plate (33); The upper end surface of the bottom plate (31) is provided with a plurality of supports (61) and arc-shaped clamps (63) corresponding to the supports (61) in an array along its length direction. The upper end surface of each support (61) is provided with an arc-shaped mounting groove (62) opening upward, and the corresponding arc-shaped clamp (63) opens downward and corresponds to the arc-shaped mounting groove (62). The axes of the arc-shaped mounting groove (62) and the arc-shaped clamp (63) are both arranged along the length direction of the bottom plate (31); the tank body (6) is placed in the arc-shaped mounting grooves (62) of the plurality of supports (61). The axis thereof is arranged along the length direction of the bottom plate (31); the arc-shaped hoop (63) hoop the tank body (6) downward from the top of the tank body (6); and both ends of the arc-shaped hoop (63) are detachably fixedly mounted on corresponding supports (61); the inner wall of the arc-shaped mounting groove (62) and the inner wall of the arc-shaped hoop (63) are both provided with an elastic cushion layer (64) that fits the outer wall of the tank body (6); the tank body (6) is connected to an air supply pipe (65), and the air supply pipe (65) extends out of the end fixing plate (33) and is connected to an air supply quick connector (66).

2. The modular air supply unit for an open container ship according to claim 1, characterized in that: The bottom plate (31) is provided with vertically arranged limit plates (67) located at both ends of the tank body (6). The two limit plates (67) are relatively slidably mounted on the bottom plate (31) along the length direction of the bottom plate (31), and an arc groove (68) is provided on the side where the two limit plates (67) are close to each other and matches the end of the tank body (6) close to them. An elastic protective pad (69) is provided in the arc groove (68) to match it.

3. The modular air supply unit for an open container ship according to claim 1, characterized in that: A first dovetail strip (311) is provided on the side of the bottom plate (31) away from the side fixing plate (32) along its length direction, and the width of the side wall of the first dovetail strip (311) away from the bottom plate (31) is greater than the width of the side wall close to the bottom plate (31), and a first dovetail groove (341) is provided on the bottom side wall of the side movable plate (34) to cooperate with the first dovetail strip (311); a first vertically arranged fixing strip (331) is provided on the side of the end fixing plate (33) away from the side fixing plate (32), and the first fixing strip (331) is horizontally slidably installed on the end fixing plate (33) along a length direction perpendicular to the first dovetail strip (311), and a first fixing groove (342) is provided on the side wall of the side movable plate (34) to cooperate with the first fixing strip (331).

4. The modular air supply unit for an open container ship according to claim 3, characterized in that: The upper ends of the side fixing plates (32) and the upper ends of the side movable plates (34) are respectively provided with second dovetail strips (37) arranged along their length directions, the width of the upper ends of the second dovetail strips (37) is greater than the width of the lower ends, and the bottom sides of the top plate (36) are provided with second dovetail grooves (361) that match the corresponding second dovetail strips (37); the upper ends of the end fixing plates (33) are provided with second fixing strips (332) that are arranged along the width direction of the bottom plate (31) and slide vertically, and the bottom of the top plate (36) is provided with second fixing grooves (362) that match the second fixing strips (332).

5. The modular air supply unit for an open container ship according to claim 4, characterized in that: The top plate (36) and the bottom plate (31) are respectively provided with a third dovetail strip (38) arranged along the width direction thereof at one end away from the end fixing plate (33), and the side width of the third dovetail strip (38) away from the top plate (36) is greater than the side width close to the top plate (36), and the side wall of the end movable plate (35) is provided with a third dovetail groove (351) matched with the third dovetail strip (38); the side fixing plate (32) and the side movable plate (34) are respectively provided with a vertically arranged third fixing strip (4) at one end away from the end fixing plate (33), and the third fixing strip (4) is horizontally slidably installed on the corresponding side fixing plate (32) and the side movable plate (34) along the length direction of the bottom plate (31), and the side wall of the end movable plate (35) is provided with a third fixing groove (352) matched with the corresponding third fixing strip (4).

6. The modular air supply unit for an open container ship according to claim 5, characterized in that: The side fixing plate (32) and the side movable plate (34) are provided with a guide groove (41) at one end away from the end fixing plate (33) and the third fixing bar (4). The side fixing plate (32) and the side movable plate (34) are also provided with a driving groove (42) arranged along the length direction thereof. The driving groove (42) is located above or below the guiding groove (41) and is connected to the guiding groove (41). A driving screw (43) arranged along the length direction thereof is positioned and rotatably installed in the driving groove (42). The third fixing bar (4) is provided with a sliding member installed on the driving groove (42). A driving block (44) is arranged in the groove (42) and is threadedly connected to the driving screw (43); the driving screw (43) is connected to a driving motor (45) at one end away from the third fixing bar (4); the side walls of the side fixing plate (32) and the side movable plate (34) are provided with a receiving groove (46) that cooperates with the driving motor (45); the opening of the receiving groove (46) close to the outer wall of the corresponding side fixing plate (32) and the side movable plate (34) passes through the corresponding side fixing plate (32) and the side movable plate (34), and a protective cover (47) is detachably fixedly installed at the opening.

7. The modular air supply unit for an open container ship according to claim 1, characterized in that: The bottom of the bottom plate (31) is provided with a plurality of mounting protrusions (5) in a rectangular array, and the main deck (1) is provided with a support layer (11) for installing an air supply unit, with a gap between the bottom of the support layer (11) and the upper end surface of the main deck (1), and the support layer (11) is provided with a plurality of mounting openings (12) vertically penetrating the support layer and cooperating with corresponding mounting protrusions (5) in a rectangular array; each mounting protrusion (5) is provided with a mounting hole (51) penetrating the support layer, and the axes of the plurality of mounting holes (51) are parallel to each other and are all arranged along the width direction of the bottom plate (31); The bottom of the support layer (11) is provided with a plurality of fixed plates (13) in an array along the axial direction of the mounting hole (51); the fixed plates (13) are arranged horizontally perpendicular to the axial direction of the mounting hole (51); a plurality of mounting protrusions (5) along the length direction of the fixed plates (13) form a group; a plurality of the fixed plates (13) and a plurality of groups of mounting protrusions (5) are arranged at intervals; and a plurality of mounting rods (14) that match the mounting holes (51) on the corresponding mounting protrusions (5) are arranged in an array along the length direction of the fixed plates (13) on the side close to the mounting protrusions (5); the fixed plates (13) are slidably mounted on the bottom of the support layer (11) along the axial direction of the mounting hole (51), and a telescopic cylinder (15) that drives the fixed plates to slide is connected to the side away from the mounting rods (14).

8. The modular air supply unit for an open container ship according to claim 7, characterized in that: The upper end surface of the top plate (36) is provided with a plurality of mounting grooves (52) matched with the mounting protrusions (5) in a rectangular array, and the upper rectangular array of the top plate (36) is provided with a plurality of through holes (53). When the upper LNG tank box (2) is installed on the lower LNG tank box (2), the through holes (53) are coaxially arranged with the mounting holes (51) on the mounting protrusions (5) in the mounting grooves (52), and a fixing rod (54) arranged along the axial direction thereof is passed between the coaxial mounting holes (51) and the through holes (53). Both ends of the fixing rod (54) extend out of the through holes (53) at both ends and are fixed to the side walls of the side fixing plate (32) and the side wall of the side movable plate (34) through a fixing seat (55).

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