Novel liquid carbon dioxide transport ship adopting fiber composite material liquid cargo tank

Abstract

The invention belongs to the technical field of liquid carbon dioxide transport ships, and particularly relates to a novel liquid carbon dioxide transport ship adopting a fiber composite liquid cargo tank. The ship comprises a main ship body. The main ship body comprises a tail module, a cabin module, a cargo compartment module and a head module. A plurality of independent cargo compartment chambers are arranged in the cargo compartment module, and the adjacent cargo compartment chambers are separated through transverse compartment walls; an independent carbon dioxide liquid cargo tank, a top ballast tank and a bottom ballast tank are arranged in each independent cargo compartment; the carbon dioxide liquid cargo tank is made of a fiber composite material or a combination of steel and the fiber composite material and comprises an inner container and a winding layer, and the cross section of the carbon dioxide liquid cargo tank is of a bilateral symmetry polygonal structure. The carbon dioxide liquid cargo tank is connected with the hull structure through supporting blocks. The liquid carbon dioxide transport ship is high in cargo hold area capacity utilization rate, high in stability and reliability and low in capacity requirement for hoisting facilities in the construction process.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid carbon dioxide transport vessels, and specifically relates to a new type of liquid carbon dioxide transport vessel using fiber composite material liquid cargo tanks. The present invention is also applicable to various marine engineering equipment related to the CCUS industry, covering some or all functions of offshore floating carbon dioxide liquefaction, storage, external transmission, and injection. Background Art

[0002] Currently, countries around the world, especially developed countries, are actively promoting the development of the CO2 capture, transportation, and subsea storage industries. With the gradual implementation of carbon capture and storage (CCUS) projects worldwide, liquid CO2 transport vessels and offshore storage and injection equipment will become crucial components of the industry chain. Due to the characteristics of CO2 and its three-phase nature, to maintain its liquid form during storage and transportation, the storage environment must meet both temperature and pressure requirements. Specifically, both storage temperature and pressure must be above the triple point: 5.2 barg, -56.6°C.

[0003] The liquid carbon dioxide storage tanks of existing liquid carbon dioxide carriers are all made of steel. Due to the inherent properties of steel, the size and capacity of steel storage tanks are significantly restricted to meet the triple point requirements of liquid carbon dioxide. As the total deadweight of the ship increases, the number of storage tanks increases, regardless of whether the storage tanks are single-barrel, double-barrel, or triple-barrel types. This increases the complexity of the vessel's liquid cargo system piping and operability, and the compatibility with the ship's main dimensions decreases, which in turn creates numerous limiting factors in the ship's line design. Furthermore, the most obvious drawback of C-shaped steel tanks in the cargo hold is the low cargo hold capacity utilization rate of the liquid carbon dioxide carrier and the offshore storage and injection equipment, which is generally less than 40%, significantly affecting the economic efficiency of the ship. Furthermore, due to the material properties and heavy weight of this type of tank, the construction process requires high lifting equipment capabilities. For example, renting a large sea crane for lifting and installation will increase the overall construction cost of the carrier and the offshore storage and injection equipment. These issues have hindered the efficient and large-scale development of liquid carbon dioxide carriers. Therefore, a new type of liquid cargo tank material and structural design is urgently needed to break through the existing technical bottleneck and improve transportation efficiency and economy. Summary of the Invention

[0004] In order to solve the problems of low cargo hold capacity utilization rate of liquid carbon dioxide transport ships in the prior art, complex piping layout of the ship's liquid cargo system, poor matching with the main dimensions of the ship, low stability and reliability, and high requirements on the capacity of lifting facilities during the construction process, the present invention proposes a new type of liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks, including: a main hull, the main hull includes a stern module, an engine room module, a cargo hold module and a bow module; a plurality of independent cargo hold chambers are arranged in the cargo hold module, and adjacent cargo hold chambers are separated by transverse bulkheads; an independent carbon dioxide liquid cargo tank, a top ballast tank and a bottom ballast tank are arranged in each independent cargo hold chamber; the carbon dioxide liquid cargo tank is made of fiber composite material or a combination of steel and fiber composite material, includes an inner liner and a winding layer, and its cross section is a bilaterally symmetrical polygonal structure; the carbon dioxide liquid cargo tank is connected to the hull structure through a support block, and the support block is arranged at the strong structure position of the hull for transmitting the liquid cargo load and allowing thermal expansion and contraction deformation.

[0005] According to the new type of liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks described above, the top ballast tank is surrounded by the main deck, the first top plate, the first inclined plate and the side. The height of the first top plate is 650mm to 1500mm, and the angle between the first inclined plate and the side is 60° to 70°.

[0006] According to the new type of liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank as described above, the bottom ballast tank is composed of an outer plate, a second inclined plate and an inner bottom plate. The angle between the second inclined plate and the inner bottom plate is 40° to 60°, and the height of the inner bottom plate is greater than the smaller value of 1 / 15 of the ship width or 2m.

[0007] According to the novel liquid carbon dioxide transport ship using a fiber composite liquid cargo tank as described above, the cross section of the carbon dioxide liquid cargo tank is a polygonal prism, consisting of a top surface, an upper inclined surface, a side surface, a lower inclined surface and a bottom surface.

[0008] According to the new liquid carbon dioxide transport ship using fiber composite liquid cargo tanks described above, the distance between the top surface of the carbon dioxide liquid cargo tank and the main deck is 1.5m to 2.5m, the distance between the bottom surface and the inner bottom plate is ≥800mm, and the distance between the side and the side is 800mm to 2000mm.

[0009] According to the new type of liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank as described above, the support block includes a bottom support block, a top support block and an upper inclined support block. The bottom support block is composed of laminated wood, a coaming and a fixed support structure; the laminated wood is bonded to the carbon dioxide liquid cargo tank and movably connected to the fixed support structure; the upper inclined support block is arranged between the first inclined plate and the upper inclined surface.

[0010] According to the novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks described above, the bottom support block includes a first bottom support block and a second bottom support block, and the second bottom support block is provided with a coaming support bracket and filled with glued laminated wood.

[0011] According to the novel liquid carbon dioxide transport ship using the fiber composite liquid cargo tank described above, the distance between the upper slope of the carbon dioxide liquid cargo tank and the first inclined plate is 600mm to 1500mm, and the distance between the lower slope and the second inclined plate is ≥380mm.

[0012] According to the novel liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank as described above, the laminated wood of the support blocks is made of composite material.

[0013] According to the new type of liquid carbon dioxide transport ship using a fiber composite liquid cargo tank as described above, the carbon dioxide liquid cargo tank is made of fiber composite material, and the carbon dioxide liquid cargo tank is made of fiber composite material or a combination of steel and fiber composite material, that is, its liner is preferably made of fiber composite material, and steel material can also be used, and the outer winding layer is made of fiber composite material.

[0014] According to the novel liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank as described above, the fiber composite material is a carbon fiber or glass fiber reinforced resin-based composite material.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention significantly improves tank capacity utilization and optimizes transportation efficiency. Due to the high material density and structural limitations of traditional steel liquid cargo tanks, the tank capacity utilization rate is less than 40%, and multiple small storage tanks need to be arranged, resulting in complex pipelines and wasted space. The present invention uses fiber composite materials to manufacture carbon dioxide liquid cargo tanks. Their high strength and lightweight characteristics allow them to be designed into polygonal prismatic structures that match the hull lines, such as octagonal shapes, effectively fitting the cargo hold module space and reducing redundant gaps. Through the polygonal cross-section: the structure formed by the top surface, upper inclined surface, side surface, lower inclined surface and bottom surface, the tank capacity utilization rate is increased to more than 60%, and the single transportation volume is significantly increased. In addition, the carbon dioxide liquid cargo tank made of fiber composite materials can be designed on a large scale, reducing the number of storage tanks, further simplifying the pipeline layout and operating procedures, and reducing maintenance costs. Compared with traditional steel tanks, the present invention has broken through the size and tank capacity limitations through dual innovations in materials and structure, and efficiently transports carbon dioxide.

[0016] 2. The support blocks arranged at the strong structural positions of the hull of the present invention are lightweight and flexible, which reduces construction costs. Existing steel liquid cargo tanks need to rely on heavy lifting equipment to install steel support blocks, which is costly and has poor adaptability. The present invention adopts composite material support blocks: laminated wood and fixed support structures are flexibly connected, which are light in weight and simplified in structure. The bottom support blocks are composed of laminated wood, coamings and fixed supports, and load transfer and thermal expansion and contraction adaptation are achieved through gluing and movable connections. The support blocks are distributed at the strong structural positions of the hull, and the load transfer is more uniform. Its modular design can be flexibly adapted to single-tube, double-ear or octagonal cabin types to meet the requirements of different hull lines and optimize the matching of the main dimensions. Compared with traditional steel supports, the lightweight characteristics of composite material support blocks reduce the difficulty and energy consumption of lifting, reduce installation costs by more than 30%, and enhance structural economy and construction efficiency.

[0017] 3. The present invention simplifies the structural layout of the liquid cargo tank and improves the convenience of operation. Due to size limitations, traditional steel tanks need to be arranged with multiple small storage tanks, resulting in a complex piping system and cumbersome operation. The present invention uses the high strength characteristics of fiber composite materials to enlarge the polygonal liquid cargo tank, reduce the number of storage tanks, and increase the volume of a single tank by 50%, thereby simplifying the layout of the liquid cargo pipeline. The structure with a spacing of 800-2000mm between the side of the tank and the side and a spacing of ≥800mm between the bottom and the inner bottom plate not only meets the safety requirements of the IGC specifications, but also avoids space waste. In addition, the size of the liquid cargo tank can be adjusted along the length of the ship along the hull lines, expanding in the middle and shrinking at the bow and stern, further optimizing space utilization. Compared with traditional designs, the operating procedures of the liquid cargo system are reduced by 40%, the difficulty of maintenance is significantly reduced, and the ship's operating efficiency is improved.

[0018] 4. The corrosion resistance and insulation properties of the carbon dioxide liquid cargo tank made of the fiber composite material of the present invention reduce energy consumption and maintenance requirements. Steel liquid cargo tanks require additional anti-corrosion coatings, and due to their high thermal conductivity, they need continuous energy supply to maintain low temperatures, which consumes a lot of energy. The present invention uses fiber composite materials to manufacture liquid cargo tanks, whose liner and winding layer have natural corrosion resistance and do not require anti-corrosion treatment, extending their service life by more than 30%. At the same time, the composite material has a low thermal conductivity coefficient of about 1 / 50 of that of steel, which can effectively isolate external heat, reduce the evaporation loss of liquid carbon dioxide, maintain the temperature stability in the cabin, and reduce energy loss by 25% under -56.6°C working conditions. In addition, the insulation properties reduce the load on the refrigeration system, further reducing operating energy consumption. Compared with traditional steel tanks, the present invention achieves dual breakthroughs in corrosion protection and energy saving through material performance optimization, reducing the cost of the entire life cycle.

[0019] 5. The laminated wood of the bottom support block of the present invention is bonded to the CO2 cargo tank and flexibly connected to the fixed support structure. The upper inclined support block is positioned between the first inclined plate and the upper inclined surface, improving adaptability to thermal expansion and contraction, and enhancing structural safety and reliability. Traditional steel cargo tanks are prone to stress concentration due to thermal expansion and contraction, leading to structural fatigue and even cracking. The support blocks of the present invention utilize laminated wood and are flexibly connected to the fixed support structure, allowing the CO2 cargo tank to expand and contract freely under temperature loads. For example, the bottom support block reserves a margin of ≥250mm. The upper inclined support block and the bottom support block work together to balance buoyancy and thermal deformation, avoiding stress concentration. In addition, the polygonal structure of the CO2 cargo tank, with a top surface 1.5-2.5m away from the main deck, allows for deformation space to ensure structural integrity under extreme operating conditions. Compared to rigid steel supports, the present invention improves the structural safety factor by over 30% through flexible connections and material properties, ensuring the long-term operational reliability of the transport vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of a new type of liquid carbon dioxide transport ship cargo tank module and a carbon dioxide liquid cargo tank structure using a fiber composite material liquid cargo tank according to the present invention.

[0021] Figure 2 This is a schematic diagram of the carbon dioxide liquid cargo tank support structure of a new type of liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank of the present invention.

[0022] Figure 3 This is a front view of a structural schematic diagram of a first bottom support block of a new type of liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank according to the present invention.

[0023] Figure 4 This is a front view of a structural schematic diagram of a second bottom support block of a new type of liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank according to the present invention.

[0024] Figure 5 This is a top view of a schematic structural diagram of a bottom support block of a new type of liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank according to the present invention.

[0025] Figure 6 This is a schematic diagram of the main hull structure of a new type of liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to the present invention.

[0026] In the picture: 1-Inner liner, 2-Wrap layer, 3-Main deck, 4-First top plate, 5-First inclined plate, 6-Side, 7-Outer plate, 8-Second inclined plate, 9-Inner bottom plate, 10-Bottom support block, 11-Laminated wood, 12-Coaming, 13-Fixed support structure, 14-Coaming support bracket, 15-First bottom support block, 16-Second bottom support block, 20-Top surface support block, 30-Upper inclined surface support block, 100-Aft module, 200-Engine room module, 300-Cargo hold module, 310-Cargo hold room, 311-CO2 liquid cargo tank, 312-Top ballast tank, 313-Bottom ballast tank, 317-Top surface, 318-Upper inclined surface, 314-Side, 315-Lower inclined surface, 316-Bottom surface, 319-Transverse bulkhead, 400-Bow module, 500-Support block, 600-Hull strong structure. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The present invention provides a liquid carbon dioxide transport ship using a fiber composite material liquid cargo tank, and its specific embodiments are as follows: like Figures 1 to 6 As shown: A new type of liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks includes: a main hull, the main hull includes a stern module 100, an engine room module 200, a cargo hold module 300 and a bow module 400; a plurality of independent cargo hold chambers 310 are arranged in the cargo hold module 300, and adjacent cargo hold chambers 310 are separated by transverse bulkheads 319; each independent cargo hold chamber 310 is provided with an independent carbon dioxide liquid cargo tank 311, a top ballast tank 312 and a bottom ballast tank 313; the carbon dioxide liquid cargo tank 311 is made of fiber composite material, including an inner liner 1 and a winding layer 2, and its cross-section is a bilaterally symmetrical polygonal structure; the carbon dioxide liquid cargo tank 311 is connected to the hull structure via a support block 500, which is arranged at the position of the hull strong structure 600 to transfer the load of the liquid cargo 311 and allow thermal expansion and contraction deformation.

[0029] The top ballast tank 312 is surrounded by the main deck 3, the first top plate 4, the first inclined plate 5 and the side 6. The height of the first top plate 4 is 650mm to 1500mm, and the angle between the first inclined plate 5 and the side 6 is 60° to 70°.

[0030] The bottom ballast tank 313 is composed of an outer plate 7, a second inclined plate 8 and an inner bottom plate 9. The angle between the second inclined plate 8 and the inner bottom plate 9 is 40° to 60°, and the height of the inner bottom plate 9 is greater than the smaller value of 1 / 15 of the ship width or 2m.

[0031] The cross section of the carbon dioxide liquid cargo tank 311 is an octagonal prism, consisting of a top surface 317 , an upper inclined surface 318 , a side surface 314 , a lower inclined surface 315 and a bottom surface 316 .

[0032] The distance between the top surface 317 of the carbon dioxide liquid cargo tank 311 and the main deck 3 is 1.5m to 2.5m, the distance between the bottom surface 316 and the inner bottom plate 9 is ≥800mm, and the distance between the side surface 314 and the side 6 is 800mm to 2000mm.

[0033] The support block 500 includes a bottom support block 10, a top support block 20 and an upper inclined support block 30. The bottom support block 10 is composed of laminated wood 11, a panel 12 and a fixed support structure 13; the laminated wood 11 is bonded to the carbon dioxide liquid cargo tank 311 and is movably connected to the fixed support structure 13; the upper inclined support block 30 is arranged between the first inclined plate 5 and the upper inclined surface 318.

[0034] The bottom support block 10 includes a first bottom support block 15 and a second bottom support block 16 . The second bottom support block 16 is provided with a panel support bracket 14 and is filled with glue-laminated wood 11 .

[0035] The distance between the upper inclined surface 318 of the carbon dioxide liquid cargo tank 311 and the first inclined plate 5 is 600 mm to 1500 mm, and the distance between the lower inclined surface 315 and the second inclined plate 8 is ≥380 mm.

[0036] The laminated wood 11 of the support block 500 is made of a composite material. The fiber composite material is a carbon fiber or glass fiber reinforced resin matrix composite material.

[0037] New liquid carbon dioxide carriers using fiber composite cargo tanks, such as Figure 1 As shown, the main hull is equipped with a stern module 100, an engine room module 200, a cargo hold module 300, and a bow module 400. The stern module 100 is used to install the rudder and propeller. The engine room module 200 is equipped with a propulsion system and supporting equipment, as well as oil and water tanks. The cargo hold module 300 includes: multiple independent cargo compartments 310 distributed below the main deck 3, with transverse bulkheads 319 installed between adjacent independent cargo compartments 310. The independent cargo compartments 310 are equipped with independent carbon dioxide liquid cargo tanks 311, top ballast tanks 312, and bottom ballast tanks 313. The bow module 400 is equipped with a bow oil tank, forepeak tank, etc.

[0038] like Figure 2As shown, the top ballast tank 312 of the cargo hold module 300 is composed of the main deck 3, the first top plate 4, the first inclined plate 5, and the side 6. To maximize the volume of the carbon dioxide liquid cargo tank 311, the top ballast tank 312 is kept as small as possible while meeting the ballast capacity requirements. In this embodiment, the height G of the first top plate 4 ranges from 650mm≤G≤1500mm, and the distance H from the first top plate 4 to the hull centerline ranges from 1 / 4 of the hull width ≤H≤1 / 3 of the hull width. The first inclined plate 5 is parallel to the upper inclined surface 318 of the carbon dioxide liquid cargo tank 311, and the angle θ between it and the side 6 ranges from 60°≤θ≤70°.

[0039] The bottom ballast tank 313 of the cargo hold module 300 is composed of the outer plate 7 of the main hull, the second inclined plate 8, and the inner bottom plate 9. To ensure the stability of the ship in case of damage, the height C of the inner bottom plate 9 must be greater than 1 / 15 of the hull width or 2m, whichever is smaller. To ensure structural strength, in this embodiment, the angle α between the second inclined plate 8 and the inner bottom plate 9 is within the range of 40°≤α≤60°. The independent CO2 cargo tank 311 consists of an inner liner 1 and a wrapping layer 2, both preferably made of fiber composite materials. Leveraging the high strength, rigidity, and corrosion resistance of composite materials, a CO2 cargo tank structure is proposed that is more suited to the specific ship layout, significantly improving tank capacity utilization, enhancing ship economics, and operational reliability. Alternatively, the inner liner 1 can be made of steel, with the outer wrapping layer 2 wrapped in composite materials.

[0040] The cross section of the independent carbon dioxide liquid cargo tank 311 is a bilaterally symmetrical polygonal structure, consisting of a top surface 317, an upper inclined surface 318, a side surface 314, a lower inclined surface 315 and a bottom surface 316. Figure 2As shown, sufficient space must be left between the top surface 317 and the main deck 3 for the top support block 20 and deck beams, but it should not be too large to avoid wasting space and structural waste caused by an oversized top support block 20. In this embodiment, the height A between the top surface 317 and the main deck 3 is within the range of 1.5m≤A≤2.5m. Sufficient space must be left between the bottom surface 316 and the inner floor 9 for the bottom support block 10, but it should not be too large to avoid wasting space and structural waste caused by an oversized bottom support block 10. In this embodiment, the height B between the bottom surface 316 and the inner bottom plate 9 is within the range of B≥800mm. Sufficient space must be left between the side 314 and the hull side 6 for the installation of structures and maintenance access. Furthermore, according to the IGC Code, any part of a 3G ship-type liquid cargo tank must be at least 800mm away from the hull shell. In this embodiment, the distance D between the side 314 and the hull side 6 is within the range of 800mm≤D≤2000mm. The upper inclined surface 318 is parallel to the first sloping plate 5 of the hull. Sufficient space must be left between the upper inclined surface 318 and the first sloping plate 5 to accommodate the upper inclined surface support block 30. However, the upper inclined surface 318 should not be too large to avoid wasting space and structural waste caused by an overly large upper inclined surface support block 30. In this embodiment, the distance E between the upper inclined surface 318 and the first sloping plate 5 of the hull is within the range of 600mm≤E≤1500mm. The lower inclined surface 315 is parallel to the second sloping plate 8 of the hull. The distance F between the lower inclined surface 315 and the second sloping plate 8 meets the minimum IGC Code requirement of 380mm and should not be too large to avoid wasting space.

[0041] The independent carbon dioxide liquid cargo tank 311 can adjust the polygonal prismatic structural dimensions along the length direction of the ship as the hull lines change.

[0042] The independent carbon dioxide liquid cargo tank 311 is connected to the hull structure by setting a support block 500, which is used to transfer the liquid cargo tank and liquid cargo load during normal operation of the ship to the hull structure. Figure 5 As shown, the first bottom support block 15 is composed of laminated wood 11, surrounding panels 12, and a fixed support structure 13. One side of the laminated wood 11 is fixedly connected to the carbon dioxide cargo tank 311 by gluing, and the other side of the laminated wood 11 is movably connected to the fixed support structure 13 to facilitate the expansion and contraction of the carbon dioxide cargo tank 311 under temperature load. The surrounding panels 12 are welded to the bottom fixed support structure 13 and are symmetrical with the center of the laminated wood 11. The edge distance is >250mm, allowing the carbon dioxide cargo tank 311 to expand or contract freely when heated and cooled. The bottom fixed support structure 13 is not limited in form as long as it meets the strength requirements. The first bottom support block 15 is used for vertical support of the carbon dioxide cargo tank 311. As shown Figure 6As shown, the second bottom support block 16 is composed of laminated wood 11, bottom fixed support structure 13, surrounding panels 12, and panel support brackets 14. The panel support brackets 14 and the panel 12 are welded to the bottom fixed support structure 13. The laminated wood 11 fills the space formed by the carbon dioxide liquid cargo tank 311, the fixed support structure 13, and the panel 12, and glue is injected around the periphery to bond them together. The second bottom support block 16 is used for vertical support, anti-roll support, and anti-pitch support of the carbon dioxide liquid cargo tank 311. Figure 3 As shown, the structure of the upper inclined support block 30 is the same as that of the first bottom support block 15. When the ship is flooded, the independent carbon dioxide cargo tank 311 tends to move upward due to the buoyancy. The upper inclined support block 30 is used to balance the buoyancy of the carbon dioxide cargo tank 311. Figure 3 As shown, the top support block 20 has the same structure as the first bottom support block 15 and is used for anti-roll support and anti-pitch support of the carbon dioxide liquid cargo tank 311.

[0043] like Figure 4 As shown, all support blocks 500 are distributed longitudinally and transversely at the positions of the hull strong structure 600, such as the intersection of ribs and longitudinal girders, according to structural calculation requirements to ensure uniform load transmission.

[0044] The carbon dioxide liquid cargo tank 311 adjusts the octagonal dimensions along the length of the ship along the hull lines, for example, the cross-section in the middle of the hull is increased to match the broad lines, and the bow and stern modules are reduced to adapt to the streamlined design.

[0045] Through the above design, the capacity utilization rate of the carbon dioxide liquid cargo tank is increased to more than 60%, and the transportation volume of a single ship is significantly increased; the lightweight characteristics of composite materials reduce the difficulty of lifting and construction costs; the support block 500 ensures the stability and safety of the liquid cargo tank under complex working conditions.

[0046] The present invention solves the technical defects of existing steel liquid cargo tanks through material innovation and structural optimization, and provides an efficient and economical solution for large-scale liquid carbon dioxide transportation.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A new type of liquid carbon dioxide carrier using fiber composite liquid cargo tanks, characterized by: include: A main hull comprises a tail module (100), an engine room module (200), a cargo hold module (300) and a bow module (400); a plurality of independent cargo hold chambers (310) are arranged in the cargo hold module (300), and adjacent cargo hold chambers (310) are separated by transverse bulkheads (319); an independent carbon dioxide liquid cargo tank (311), a top ballast tank (312) and a bottom ballast tank (313) are arranged in each independent cargo hold chamber (310); the carbon dioxide liquid cargo tank (311) is made of fiber composite material or a combination of steel and fiber composite material, comprises an inner liner (1) and a winding layer (2), and its cross section is a bilaterally symmetrical polygonal structure; the carbon dioxide liquid cargo tank (311) is connected to the hull structure through a support block (500), and the support block (500) is arranged at a position of the hull strong structure (600) for transmitting the load of the liquid cargo (311) and allowing thermal expansion and contraction deformation.

2. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 1 is characterized in that: The top ballast tank (312) is surrounded by a main deck (3), a first top plate (4), a first inclined plate (5) and a side (6); the height of the first top plate (4) is 650 mm to 1500 mm, and the angle between the first inclined plate (5) and the side (6) is 60° to 70°.

3. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 1 is characterized in that: The bottom ballast tank (313) is composed of an outer plate (7), a second inclined plate (8) and an inner bottom plate (9), wherein the angle between the second inclined plate (8) and the inner bottom plate (9) is 40° to 60°, and the height of the inner bottom plate (9) is greater than the smaller value of 1 / 15 of the ship width or 2m.

4. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 1 is characterized in that: The cross section of the carbon dioxide liquid cargo tank (311) is a polygonal prism, consisting of a top surface (317), an upper inclined surface (318), a side surface (314), a lower inclined surface (315) and a bottom surface (316).

5. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 4 is characterized in that: The distance between the top surface (317) of the carbon dioxide liquid cargo tank (311) and the main deck (3) is 1.5m to 2.5m, the distance between the bottom surface (316) and the inner bottom plate (9) is ≥800mm, and the distance between the side surface (314) and the side (6) is 800mm to 2000mm.

6. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 1 is characterized in that: The support block (500) includes a bottom support block (10), a top support block (20) and an upper inclined support block (30), wherein the bottom support block (10) is composed of laminated wood (11), a panel (12) and a fixed support structure (13); the laminated wood (11) is bonded to the carbon dioxide liquid cargo tank (311) and movably connected to the fixed support structure (13); and the upper inclined support block (30) is arranged between the first inclined plate (5) and the upper inclined surface (318).

7. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 6 is characterized in that: The bottom support block (10) comprises a first bottom support block (15) and a second bottom support block (16); the second bottom support block (16) is provided with a panel support elbow plate (14) and is filled with glued laminated wood (11).

8. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 4 is characterized in that: The distance between the upper inclined surface (318) of the carbon dioxide liquid cargo tank (311) and the first inclined plate (5) is 600 mm to 1500 mm, and the distance between the lower inclined surface (315) and the second inclined plate (8) is ≥380 mm.

9. The novel liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 8, characterized in that: The laminated wood (11) of the support block (500) is made of a composite material; the fiber composite material is a carbon fiber or glass fiber reinforced resin-based composite material.

10. The new type of liquid carbon dioxide transport ship using fiber composite material liquid cargo tanks according to claim 1 is characterized in that The carbon dioxide liquid cargo tank (311) is made of fiber composite material or a combination of steel and fiber composite material, that is, its inner liner (1) is made of fiber composite material or steel material, and the outer winding layer (2) is made of fiber composite material.

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