A B-type bunker tanker

Abstract

The utility model discloses a kind of B-type fuel cabin medium-sized container ships, including fuel storage cabin, cabin, the fuel filling station of being connected with double fuel main engine and double fuel generator and a pair;Wherein, the rear upper position of fuel storage cabin is set to inclined plane, fuel filling station and fuel cabin junction between place, fuel cabin junction between place and fuel preparation room between, between fuel preparation room and double fuel main engine and double fuel generator, all pass through stainless steel double-wall pipe connection.The utility model has the advantages of realizing an extremely compact overall layout scheme, greatly optimizing the effective space utilization rate of whole ship, minimizing the loss of cargo hold loading space, i.e., the number of bays, and minimizing the total length of the fuel system piping, especially the substantial reduction in the amount of costly vacuum stainless steel double-wall pipe, effectively reducing the cost of shipbuilding.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, and in particular to a type B fuel tank medium container ship. Background Technology

[0002] As the International Maritime Organization and the European Union impose increasingly stringent medium- and long-term greenhouse gas emission reduction targets on ships, traditional fuel-powered container ships will find it increasingly difficult to meet the mandatory carbon intensity (CII) requirements for ship operations and the medium- and long-term decarbonization requirements of international conventions and the EU FuelEU Directive. In recent years, an increasing number of new container ship construction projects both domestically and internationally have switched to alternative fuels such as liquefied natural gas, methanol, or ammonia.

[0003] Medium-sized container ships (approximately 3,000 TEU to 10,000 TEU) have high service speeds and often carry a large number of refrigerated container sockets, thus requiring significant propulsion power and power plant capacity. If these ships use alternative fuels with higher bulk density, such as liquefied natural gas, liquid ammonia, or methanol, to achieve the same range as fuel oil, they need large-capacity alternative fuel storage tanks. As a typical example of a positional cargo ship, maximizing space utilization in the arrangement of these large-capacity alternative fuel tanks to minimize container space loss is crucial for improving key performance indicators and operational economics, and is one of the key issues that urgently needs to be addressed during the development of this type of dual-fuel container ship.

[0004] CN112193361B, "A Container Ship and its Large-Capacity Gas Fuel Tank Arrangement Structure." This invention discloses a container ship and its large-capacity gas fuel tank arrangement structure. The gas fuel tank is located in the middle of the hull, with its lower part inside the hull and its upper part extending out of the main deck to the outside. The gas fuel tank is a Type B tank or a membrane tank as specified by the IMO. This invention is only applicable to large or ultra-large container ships with a twin-island layout (separate funnel and superstructure design).

[0005] CN116279983A "A Type B Fuel Tank Arrangement Structure and Container Ship". This invention relates to a Type B fuel tank located within the main hull and adjacent to cargo holds both forward and aft. The fuel tank body is expandable along the ship's length, and the protruding length of the protrusion occupies the length of N containers in the cargo hold, effectively improving cargo loading efficiency. This invention is only applicable to large or ultra-large container ships employing a twin-island layout (separate funnel and superstructure design).

[0006] CN106163913B, "Ship with Fuel Tank for Liquid Gas". This invention relates to a fuel tank for liquid gas located in the deckhouse or superstructure area below the main deck of the ship, with the fuel tank positioned adjacent to the engine room. One or more TYPE C fuel tanks are selected as the fuel tank for liquid gas, and the C tanks, or these C tanks, are placed upright, horizontally, or suspended in the fuel tank. This invention is only applicable to LNG dual-fuel ships. This invention does not cover other types of fuel tanks besides TYPE C, which have drawbacks such as low space utilization and significant tank space loss if the fuel tank capacity requirement is large.

[0007] Medium-sized container ships typically employ a single-island mid-stern engine layout. If dual-fuel propulsion is used, the alternative fuel tank is generally located below the main deck in the cargo hold area or in the open area of ​​the main deck aft of the superstructure. However, both of these arrangements result in significant loss of cargo loading space. A few 8,000-9,000 TEU medium-sized container ships use a twin-island layout (i.e., the funnel is separated from the superstructure living area; the funnel is called the aft island, and the superstructure living area is called the fore island). In this design, the alternative fuel tank is usually located directly below the upper deck of the fore island or extends further into the adjacent cargo hold to meet the need for greater fuel tank capacity. The disadvantage of this twin-island layout is that the alternative fuel tank is very far from the engine room, and the length of the stainless steel double-walled tubing increases exponentially, leading to a significant increase in construction and maintenance costs. Utility Model Content

[0008] The technical problem solved by this utility model is that traditional medium-sized container ships have low space utilization and high construction and maintenance costs.

[0009] To solve the above-mentioned technical problems, the present invention provides a type B fuel tank medium-sized container ship, comprising:

[0010] A fuel storage tank is located in the fuel tank area below the upper deck in the mid-stern of the ship, directly below the superstructure, and directly in front of the fuel storage tank adjacent to the cargo hold.

[0011] The engine room is located below the upper deck and adjacent to the fuel storage tank directly behind it. At least one independent cargo hold is provided in the middle and rear of the engine room, and a cargo hold hatch cover is provided at the upper opening of the independent cargo hold.

[0012] A connected dual-fuel main engine and a dual-fuel generator are located at the front of the engine room and adjacent to the fuel storage tank; and

[0013] A pair of fuel refueling stations are symmetrically located on the port and starboard sides of the upper deck of the ship, adjacent to the fuel storage tank; wherein

[0014] The top of the fuel storage tank is provided with a gas chamber, which extends upward through the upper deck and connects to the fuel tank connector. The left and right sides of the fuel tank connector are respectively provided with a fuel preparation room and an inert gas generating device room.

[0015] The rear upper part of the fuel storage compartment is set as an inclined surface to allow the exhaust pipes of the dual-fuel main engine and the dual-fuel generator to pass through;

[0016] The fuel refueling station and the fuel tank connection point, the fuel tank connection point and the fuel preparation room, and the fuel preparation room and the dual-fuel main engine and the dual-fuel generator are all connected by stainless steel double-walled pipes.

[0017] Optionally, the fuel storage compartment is covered with an insulating layer on its outer side.

[0018] Optionally, a support is provided between the fuel storage tank and the upper deck and double bottom.

[0019] Optionally, an isolation compartment is provided between the fuel tank and the cargo hold, the engine room, and the superstructure.

[0020] Optionally, an isolation compartment is provided between the fuel tank connection location, the fuel preparation room, and the superstructure.

[0021] Optionally, an isolation compartment is provided between the fuel storage compartment and the fuel tank connection point, and between the fuel preparation room and the fuel storage compartment.

[0022] Optionally, the fuel preparation room and the fuel tank connection location are connected by an airlock.

[0023] Optionally, the exhaust pipe is connected to and passes through the cabin shed, and a chimney is provided on the top of the exhaust pipe.

[0024] Optionally, the engine room canopy is located behind the fuel tank connector, and the fuel preparation room and the inert gas generator room are located on the left and right sides of the engine room canopy, respectively.

[0025] Optionally, it also includes a ventilated mast, located at the end of the bridge deck on the top of the superstructure directly above the fuel storage tank, wherein the safe distance between the ventilated mast and the air conditioning inlets, ventilation openings, passageways, etc. of the superstructure area meets the requirements of relevant conventions and regulations.

[0026] The beneficial effects of this utility model's technical solution are:

[0027] The advantages of this invention are that by integrating and coordinating the various subsystems of the alternative fuel refueling system, maintenance system, supply system, and power system, as well as the functional modules of the engine room, chimney, and superstructure, an extremely compact overall layout scheme is achieved. This greatly optimizes the effective space utilization of the entire ship and minimizes the loss of cargo hold loading space, i.e., the number of containers. It provides an innovative approach to solving the problem of arranging large-capacity alternative fuel tanks on medium-sized container ships, and effectively improves the operating economy of dual-fuel container ships. In addition, this patent minimizes the total length of the alternative fuel system pipelines, especially significantly reducing the amount of expensive vacuum stainless steel double-walled pipes, effectively reducing shipbuilding costs. Attached Figure Description

[0028] Figure 1 This is a side view of a medium-sized container ship in an embodiment of this utility model;

[0029] Figure 2 This is a side view of a medium-sized container ship in an embodiment of this utility model;

[0030] Figure 3 This is a front view of a medium-sized container ship in an embodiment of this utility model. Detailed implementation method:

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Please see Figure 1 , Figure 2 and Figure 3 The illustration shows an embodiment of a Type B fuel tank medium-sized container ship, comprising: a fuel storage tank 2 located in a fuel tank space 10 below the upper deck in the mid-stern of the ship, directly below the superstructure 17, with a cargo hold 15 directly in front of the fuel storage tank 2; an engine room 11 located below the upper deck and directly behind the fuel storage tank 2, with at least one independent cargo hold 15 located in the mid-stern of the engine room 11, and a cargo hold hatch cover 16 at the upper opening of the independent cargo hold 15; a connected dual-fuel main engine 19 and a dual-fuel generator 20 located in front of the engine room 11 and adjacent to the fuel storage tank 2; and a pair of fuel refueling stations 1 symmetrically distributed throughout the ship. The fuel storage tank 2 is located on the port and starboard sides of the upper deck and is adjacent to the fuel storage tank 2. The top of the fuel storage tank 2 is provided with a gas chamber 5, which extends upward through the upper deck and connects to the fuel tank connector 7. The fuel tank connector 7 is provided with a fuel preparation room 8 and an inert gas generator room 9 on the left and right sides, respectively. The upper rear part of the fuel storage tank 2 is set as an inclined surface to allow the exhaust pipes 21 of the dual-fuel main engine 19 and the dual-fuel generator 20 to pass through. The fuel refueling station 1 and the fuel tank connector 7, the fuel tank connector 7 and the fuel preparation room 8, and the fuel preparation room 8 and the dual-fuel main engine 19 and the dual-fuel generator 20 are all connected by stainless steel double-walled pipes (not shown).

[0037] In this embodiment, the outer side of the fuel storage compartment 2 is covered with an insulating layer 3.

[0038] In this embodiment, a support 4 is provided between the fuel storage tank 2 and the upper deck and double bottom.

[0039] In this embodiment, an isolation compartment 14 is provided between the fuel tank space 10 and the cargo hold 15, engine room 11, and superstructure 17.

[0040] In this embodiment, an isolation compartment 14 is provided between the fuel tank connector 7, the fuel preparation room 8 and the superstructure 17.

[0041] In this embodiment, an isolation compartment 14 is provided between the fuel storage compartment 2 and the fuel compartment joint 7 and the fuel preparation room 8.

[0042] In this embodiment, the fuel preparation room 8 and the fuel tank connector 7 are connected by an airlock 18.

[0043] In this embodiment, the exhaust pipe 21 is connected to and passes through the cabin 12, and a chimney 13 is provided on the top of the exhaust pipe 21.

[0044] In this embodiment, the engine compartment 12 is located behind the fuel tank connector 7, and the fuel preparation room 8 and the inert gas generating device room 9 are located on the left and right sides of the engine compartment 12, respectively.

[0045] In this embodiment, a ventilation mast 6 is also included, which is located at the end of the bridge deck on the top of the superstructure 17 directly above the fuel storage tank 2. The safe distance between the ventilation mast 6 and the air conditioning inlets, ventilation openings, passage openings, etc. in the superstructure 17 area meets the requirements of relevant conventions and regulations.

[0046] The following description will further illustrate the characteristics and functions of this utility model.

[0047] This embodiment discloses a Type B fuel tank medium-sized container ship, which includes:

[0048] The following components are included in this patent: 1. Fuel refueling station; 2. Fuel storage tank; 3. Insulation layer; 4. Support; 5. Gas chamber; 6. Ventilation mast; 7. Fuel tank connection area; 8. Fuel preparation room; 9. Inert gas generator room; 10. Fuel tank area; 11. Engine room; 12. Engine room canopy; 13. Chimney; 14. Isolation compartment; 15. Cargo hold; 16. Cargo hold hatch cover; 17. Superstructure; 18. Gaslock room; 19. Dual-fuel main engine; 20. Dual-fuel generator; 21. Exhaust pipe. All locations, compartments, equipment, or systems mentioned in 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 14, and 18 above are components of the ship's alternative fuel system. The applicable alternative fuels for this patent are liquefied natural gas or liquid ammonia.

[0049] The container ship has a fuel refueling station 1 in the area adjacent to the fuel storage tank 2 on the upper deck, with one station symmetrically located on the port and starboard sides. The fuel refueling station 1 is located in the mid-to-aft part of the ship. Since this longitudinal position has a large area of ​​flat side surface, it is suitable for the refueling ship to be close and to carry the mooring line, and therefore it is suitable for the "ship-to-ship" refueling method.

[0050] The container ship's fuel storage tank 2 is located inside fuel tank space 10 below the upper deck, directly adjacent to cargo hold 15 at its front and engine room 11 at its rear. Fuel storage tank 2 is an IMO Type B tank, featuring a primary shielding and partial secondary shielding structure. The special design of the sloping surface above the rear of this Type B fuel tank (in the side view, this Type B tank has a pentagonal structure, see...) Figure 1 This provides suitable and compact path space for the exhaust pipes 21 of the dual-fuel main engine 19 and dual-fuel generator 20 within the engine room 11. A suitable number of supports 4 are provided between the main shield at the top of the Type B fuel tank and the upper deck, and between the main shield at the bottom and the double bottom. Isolation compartments 14 are provided between the fuel tank space 10 and the cargo hold 15 directly in front of it, the engine room 11 directly behind it, and the superstructure 17 directly above it.

[0051] At the end of the bridge deck directly above fuel storage tank 2 (see bridge wing) Figure 3 A ventilation mast 6 is provided; the safe distance between the ventilation mast 6 and the air conditioning inlet, ventilation opening, passage opening, etc. of the upper building area 17 meets the requirements of relevant conventions and regulations.

[0052] A gas chamber 5 is located on the top of fuel storage tank 2, protruding above the upper deck of the ship and extending into fuel tank connection location 7. Fuel preparation room 8 is located on the left side of fuel tank connection location 7 and connected to it via gas lock room 18. Inert gas generating unit room 9 is located on the right side of fuel tank connection location 7, adjacent to fuel tank location 10 and fuel storage tank 2 (see...). Figure 2 ).

[0053] The dual-fuel main engine 19 and the dual-fuel generator 20 are located at the forward part of the nacelle 11 (see Figure 1 The fuel supply pipeline is located adjacent to the fuel storage tank 2 to minimize its length. The fuel refueling station 1 is connected to the fuel tank connection point 7, the fuel tank connection point 7 is connected to the fuel preparation room 8, and the fuel preparation room 8 is connected to the dual-fuel main engine 19 and the dual-fuel generator 20 via stainless steel double-walled pipes.

[0054] At least one independent cargo hold 15 is provided in the middle and rear of the cabin 11, and a cargo hold hatch cover 16 is provided at the opening above it.

[0055] In this embodiment of the container ship, the Type B alternative fuel tank is located directly below the superstructure and adjacent to the engine room; the fuel tank connection space (TCS) and the gas supply system room (FGSS ROOM) are both located on the upper deck area above the fuel tank; the alternative fuel refueling station is located on the port and starboard sides of the upper deck of the fuel tank area, adjacent to the fuel tank; this dual-fuel container ship adopts a single-island overall layout, with the engine room canopy and chimney adjacent to the superstructure of the living area, and the exhaust pipes of the main engine and auxiliary engines diagonally passing through the space above and behind the Type B fuel tank into the engine room canopy.

[0056] In summary, the advantages of this invention are that by integrating and coordinating the various subsystems of the alternative fuel refueling system, maintenance system, supply system, and power system, as well as the functional modules of the engine room, funnel, and superstructure, an extremely compact overall layout scheme is achieved. This greatly optimizes the effective space utilization of the entire ship and minimizes the loss of cargo hold loading space, i.e., the number of containers. It provides an innovative approach to solving the problem of arranging large-capacity alternative fuel tanks on medium-sized container ships, and effectively improves the operational economy of dual-fuel container ships. In addition, this invention minimizes the total length of the alternative fuel system pipelines, especially significantly reducing the amount of expensive vacuum stainless steel double-walled pipes, effectively reducing shipbuilding costs.

[0057] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A type B fuel tank medium-sized container ship, characterized in that, include: A fuel storage tank is located in the fuel tank area below the upper deck in the mid-stern of the ship, directly below the superstructure, and directly in front of the fuel storage tank adjacent to the cargo hold. The engine room is located below the upper deck and adjacent to the fuel storage tank directly behind it. At least one independent cargo hold is provided in the middle and rear of the engine room, and a cargo hold hatch cover is provided at the upper opening of the independent cargo hold. A connected dual-fuel main engine and a dual-fuel generator are located at the front of the engine room and adjacent to the fuel storage tank; as well as A pair of fuel refueling stations are symmetrically distributed on the port and starboard sides of the upper deck of the ship and are adjacent to the fuel storage tank. in The top of the fuel storage tank is provided with a gas chamber, which extends upward through the upper deck and connects to the fuel tank connector. The left and right sides of the fuel tank connector are respectively provided with a fuel preparation room and an inert gas generating device room. The rear upper part of the fuel storage compartment is set as an inclined surface to allow the exhaust pipes of the dual-fuel main engine and the dual-fuel generator to pass through; The fuel refueling station and the fuel tank connection point, the fuel tank connection point and the fuel preparation room, and the fuel preparation room and the dual-fuel main engine and the dual-fuel generator are all connected by stainless steel double-walled pipes.

2. The Type B fuel tank medium-sized container ship according to claim 1, characterized in that, The fuel storage compartment is covered with an insulating layer on the outside.

3. The Type B fuel tank medium-sized container ship according to claim 2, characterized in that, The fuel storage tank is supported by a bracket between itself and the upper deck and the double bottom.

4. The Type B fuel tank medium-sized container ship according to claim 3, characterized in that, The fuel tank is separated from the cargo hold, the engine room, and the superstructure by an isolated compartment.

5. The Type B fuel tank medium-sized container ship according to claim 4, characterized in that, An isolation compartment is provided between the fuel tank connection point, the fuel preparation room, and the superstructure.

6. The Type B fuel tank medium-sized container ship according to claim 5, characterized in that, An isolation compartment is provided between the fuel storage tank and the fuel tank joint location, and between the fuel preparation room and the fuel storage tank.

7. The Type B fuel tank medium-sized container ship according to claim 6, characterized in that, The fuel preparation room and the fuel tank connection location are connected by an airlock.

8. The Type B fuel tank medium-sized container ship according to claim 7, characterized in that, The exhaust pipe is connected to and passes through the cabin shed, and a chimney is provided on the top of the exhaust pipe.

9. The Type B fuel tank medium-sized container ship according to claim 8, characterized in that, The engine room canopy is located behind the fuel tank connector, and the fuel preparation room and the inert gas generator room are located on the left and right sides of the engine room canopy, respectively.

10. The Type B fuel tank medium-sized container ship according to claim 9, characterized in that, It also includes a venting mast, located at the end of the bridge deck on the top of the superstructure directly above the fuel storage tank, and the safe distance between the venting mast and the air conditioning inlets, ventilation openings and passageway openings of the superstructure area meets the requirements of relevant conventions and regulations.

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