Arrangement form of methanol fuel system of dual-fuel crane ship

Abstract

The invention relates to an arrangement form of a methanol fuel system of a dual-fuel crane ship, and belongs to the technical field of ship design. A methanol storage cabin is positioned in a liquid cabin arrangement area in the middle of the middle rear part of a ship body; an isolation void cabin is arranged around the methanol storage cabin; isolation void cabins are arranged above, in front of and behind the methanol storage cabin and are isolated from the main deck, the fuel storage cabin and the machine position respectively, and the position close to the broadside is isolated from the sailor channel; a methanol fuel preparation room is arranged on the stern middle platform, and a methanol daily cabin is arranged in the methanol fuel preparation room; a methanol conveying pipe for conveying methanol fuel is arranged between the methanol storage cabin and the methanol daily cabin; the methanol conveying pipe is arranged in a broadside channel of the middle platform; and the stern middle platform is additionally provided with a nitrogen equipment room and a water-ethylene glycol heat exchange equipment room. The liquid tank arrangement area and the cabin arrangement space in the ship body are effectively utilized, methanol fuel injection is facilitated, and lifting operation on a main deck and loading and unloading of deck goods are not affected.

Description

Technical Field

[0001] The invention relates to an arrangement form of a methanol fuel system of a dual-fuel crane ship, belonging to the technical field of ship design. Background Art

[0002] With the restriction of carbon emissions, the global shipbuilding market is accelerating the transformation from the traditional fuel ship system to the new clean alternative fuel ship system. Methanol, as a clean energy, will significantly reduce the emission of sulfur oxides, nitrogen oxides and carbon in the entire life cycle of ships. The existing crane ship power fuel is diesel or heavy oil, which emits a large amount of pollutants after combustion and has a great impact on the environment. The application of methanol fuel in crane ships is still blank.

[0003] The methanol dual-fuel ships disclosed in the existing relevant patent documents are mostly container ships, bulk carriers, oil tankers and other cargo ships. The methanol fuel tank and fuel preparation room are arranged in the cargo hold area or above the main deck. These layout schemes are more suitable for container ships, bulk carriers, oil tankers and other liquid cargo transport ships. However, these layout schemes are not suitable for crane ships. The main reasons are:

[0004] First, the crane cylinder is arranged at the rear of the main deck of the crane ship, the middle is the working area, and the bow is the superstructure area. There is not enough space on the main deck for the arrangement of methanol gas supply system equipment; second, the crane ship does not have a centralized cargo hold area. In addition to the engine room and electrical equipment room under the main deck, the crane ship is also equipped with a large-capacity anchor winch room and ballast pump room, and there is not much redundant space for arrangement inside the hull; third, the amount of ballast water for ballasting and barge transfer during lifting operations is relatively large. At the same time, considering the safety of lifting operations, the ballast water tanks on the left and right sides must be arranged symmetrically, which limits the freedom of the arrangement position of the methanol compartment.

[0005] It can be seen that the arrangement scheme of the methanol fuel system in the existing related technology is not suitable for the dual-fuel crane ship. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and, in combination with the ship type characteristics of a crane ship, provide a layout form of a methanol fuel system for a dual-fuel crane ship, so as to achieve reasonable and safe layout and engineering application of the methanol fuel tank and its gas supply system on the crane ship.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides an arrangement form of a methanol fuel system of a dual-fuel crane vessel, wherein the methanol storage tank is located in the liquid tank arrangement area in the middle of the rear part of the hull; an isolation empty tank is arranged around the methanol storage tank; the isolation empty tank is arranged above, in front of and behind the methanol storage tank, respectively isolated from the main deck, fuel storage tank and machinery space, and isolated from the crew passage at the side; a methanol fuel preparation room is arranged on the stern middle platform, and a methanol daily tank is arranged in the methanol fuel preparation room; a methanol delivery pipe for delivering methanol fuel is arranged between the methanol storage tank and the methanol daily tank; the methanol delivery pipe is arranged in the side passage of the middle platform; a nitrogen equipment room and a water-ethylene glycol heat exchange equipment room are also arranged on the stern middle platform.

[0008] Preferably, the methanol storage tank is located in the liquid tank arrangement area in the middle of the rear part of the hull, and a fuel tank connection location is provided on the side of the methanol storage tank.

[0009] Preferably, the methanol storage tank is a steel structure cabinet without insulation material and shielding layer.

[0010] Preferably, the isolation cabin is provided outside the methanol fuel preparation room.

[0011] Preferably, the ventilation system for the methanol storage tank, the methanol daily tank and the methanol discharge tank is connected to a ventilation mast, which is located on the port side of the stern of the main deck and is a truss type with a platform for repairing each ventilation valve arranged on the top.

[0012] Preferably, the methanol storage tank, the methanol daily tank and the methanol discharge tank are all provided with pressure sensors and connected to an alarm system, and when overpressure and vacuum conditions occur, release processing is performed through an alarm.

[0013] Preferably, a discharge pump of the methanol discharge tank is provided in the fuel connection location to safely transport the contaminated liquid fuel to an onshore receiving device.

[0014] Preferably, a methanol fuel supply unit is provided in the methanol fuel preparation room, and the methanol fuel supply unit is connected to the methanol daily tank.

[0015] Preferably, a methanol dual-fuel generator set connected to the methanol fuel supply unit is provided in the engine room, or a methanol dual-fuel boiler connected to the methanol fuel supply unit is provided.

[0016] Preferably, the middle platform at the stern is provided with the water-ethylene glycol heat exchange equipment room, and the water-ethylene glycol heat exchanger and circulation pump group for heating or cooling the methanol in the methanol fuel supply unit are provided in the water-ethylene glycol heat exchanger equipment room.

[0017] Preferably, the intermediate platform at the stern is also provided with the nitrogen equipment room, which is equipped with a nitrogen generator unit for providing air and inerting for the methanol storage tank, the methanol daily tank and the methanol discharge tank, and for providing nitrogen for purging the methanol pipeline.

[0018] Preferably, a methanol fuel filling station for providing a methanol fuel filling interface is provided on the main deck, and there are two methanol fuel filling stations, respectively close to the port side and starboard side of the main deck.

[0019] The beneficial effects of the present invention are:

[0020] In the present invention, the layout position of the methanol storage tank effectively utilizes the liquid tank layout area at the rear part of the hull; at the same time, the methanol fuel preparation room and the methanol daily tank are arranged on the middle platform below the stern main deck, effectively utilizing the cabin layout space in the hull; the methanol fuel filling station is arranged on both sides close to the stern area of ​​the ship, which is convenient for methanol fuel filling; the methanol fuel system of the whole ship does not occupy the layout space of the main deck operation area of ​​the crane ship, and does not affect the lifting operation on the main deck and the loading and unloading of deck cargo. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view schematic diagram of the arrangement of a methanol fuel system of a dual-fuel crane vessel of the present invention;

[0022] Figure 2 A schematic diagram of the main deck layout of a dual-fuel crane vessel methanol fuel system according to the present invention;

[0023] Figure 3 A schematic diagram of the layout of the intermediate platform of a dual-fuel crane ship methanol fuel system according to the present invention;

[0024] Figure 4 It is a schematic diagram of the in-cabin layout of a dual-fuel crane ship methanol fuel system of the present invention;

[0025] Figure numerals: 1. Methanol storage tank; 2. Methanol daily tank; 3. Methanol fuel preparation room; 4. Fuel tank joint; 5. Methanol delivery pipe; 6. Methanol delivery pump; 7. Methanol filling pipe; 8. Methanol evaporation gas recovery pipe; 9. Methanol filling station; 10. Isolation empty tank; 11. Fuel oil storage tank; 12. Engine room; 13. Airlock room 1; 14. Methanol fuel supply unit for generator set; 15. Methanol fuel supply unit for boiler; 16. Methanol fuel supply pipeline; 17. Methanol tank pressure sensor; 18. Methanol dual-fuel generator set; 19. Methanol dual-fuel boiler; 20. Water-ethylene glycol heat exchange equipment room ; 21. Water-ethylene glycol heat exchanger; 22. Circulation pump; 23. Nitrogen equipment room; 24. Nitrogen generator unit; 25. Port side channel; 26. Left ventilation pipe of methanol storage tank; 27. Left ventilation valve of methanol storage tank; 28. Ventilation pipe of methanol daily tank; 29. ​​Ventilation valve of methanol daily tank; 30. Ventilation pipe of methanol discharge tank; 31. Ventilation valve of methanol discharge tank; 32. Methanol discharge tank; 33. Discharge pump of methanol discharge tank; 34. Airlock room 2; 35. Pump room; 36. Main deck; 37. Intermediate platform; 38. Right ventilation pipe of methanol storage tank; 39. Right ventilation valve of methanol storage tank; 40. Ventilation mast. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The embodiment of the present invention discloses an arrangement of a methanol fuel system of a dual-fuel crane vessel.

[0028] The methanol storage tank 1 is located in the liquid tank arrangement area in the middle of the rear part of the crane ship's hull; isolation empty tanks 10 are provided around the methanol storage tank 1 (including the top, front and rear), which are respectively isolated from the main deck 36, the fuel storage tank 11, and the machinery space, and isolated from the crew passage on the side; a methanol fuel preparation room 3 is provided on the stern middle platform 37, and a methanol daily tank 2 is provided in the methanol fuel preparation room 3; a methanol delivery pipe 5 for delivering methanol fuel is provided between the methanol storage tank 1 and the methanol daily tank 2; the methanol delivery pipe 5 is provided in the port side channel 25 of the middle platform 37; the stern middle platform 37 is also provided with a nitrogen equipment room 23 and a water-ethylene glycol heat exchange equipment room 20.

[0029] The methanol storage tank 1 is located in the liquid tank arrangement area in the middle of the rear part of the crane ship's hull, and extends from the double bottom upward to the main deck 36 in height direction, and an isolation empty tank 10 is provided between the main deck 36; the methanol storage tank 1 is a steel structure tank without insulation material and shielding layer; a fuel tank connection place 4 is provided on the side of the methanol storage tank 1. An isolation empty tank 10 is provided outside the methanol fuel preparation room 3; a methanol discharge tank discharge pump 33 is provided in the methanol fuel preparation room 3 to safely transport the contaminated liquid fuel to the shore receiving device; a methanol fuel supply unit is provided in the methanol fuel preparation room 3, and the methanol fuel supply unit is connected to the methanol daily tank 2.

[0030] The methanol storage tank 1, the methanol daily tank 2, and the methanol discharge tank 32 are all equipped with pressure sensors and connected to the alarm system. When overpressure and vacuum occur, the alarm is used to release the pressure. The ventilation system for pressure release and emergency discharge of the methanol storage tank 1, the methanol daily tank 2, and the methanol discharge tank 32 is connected to the ventilation mast 40, which is located at the stern of the main deck 36.

[0031] The aft middle platform 37 is provided with a water-glycol heat exchange equipment room 20, in which a water-glycol heat exchanger 21 and a circulating pump 22 group for heating or cooling the methanol in the methanol fuel supply unit are provided. The aft middle platform 37 is also provided with a nitrogen equipment room 23, which is equipped with a nitrogen generator unit 24 (air compressor, nitrogen generator, nitrogen cylinder) for inerting the methanol storage tank 1, the methanol daily tank 2 and the methanol discharge tank 32, and providing nitrogen for purging the methanol pipeline.

[0032] A methanol dual-fuel generator set 18 connected to a methanol fuel supply unit or a methanol dual-fuel boiler 19 connected to a methanol fuel supply unit is provided in the engine room 12. A methanol fuel filling station for providing a methanol fuel filling interface is provided on the main deck 36. There are two methanol fuel filling stations, one near the port side and the other near the starboard side of the main deck 36.

[0033] In the present invention, the layout position of the methanol storage tank 1 effectively utilizes the liquid tank layout area at the rear of the hull, and the methanol fuel preparation room 3 and the methanol daily tank 2 are arranged on the middle platform 37 below the stern main deck 36, effectively utilizing the cabin layout space inside the hull.

[0034] Specific as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a layout of a dual-fuel crane ship methanol fuel system includes:

[0035] The methanol storage tank 1 is located in the liquid tank arrangement area in the middle of the rear part of the crane ship's hull; isolation voids 10 are provided above, in front of and behind the methanol storage tank 1, which are isolated from the main deck 36, the fuel storage tank 11 and the pump room 35 respectively, and are isolated from the port side passage 25 of the crew passage on the side;

[0036] The methanol storage tank 1 is a steel structure tank without any insulation material or shielding layer. The methanol storage tank 1 is a structural tank without any insulation material or shielding layer.

[0037] A methanol filling station 9 for providing a methanol filling interface is provided on the main deck 36, and there are two methanol filling stations 9. The two methanol filling stations 9 are respectively close to the port side and the starboard side, so that the ship can be berthed at the pier on either side to fill methanol fuel.

[0038] A methanol filling pipe 7 is provided between the methanol filling station 9 and the methanol storage tank 1. Methanol fuel from the dock or the filling ship is filled into the methanol storage tank 1 through the methanol filling station 9 and the methanol filling pipe 7. A methanol evaporation gas recovery pipe 8 is provided on the methanol filling station 9. When the methanol fuel is filled, the methanol evaporation gas is recovered to the dock or the filling ship.

[0039] A fuel tank joint 4 is provided on the side of the methanol storage tank 1. Pipeline external joints and monitoring instruments are provided in the fuel tank joint 4. A methanol filling pipe 7 and a methanol vapor recovery pipe 8 are connected to the methanol storage tank 1 through the fuel tank joint 4.

[0040] The methanol storage tank 1 (left) is provided with a methanol storage tank left vent pipe 26 and a methanol storage tank left vent valve 27. The methanol storage tank 1 (right) is provided with a methanol storage tank right vent pipe 38 and a methanol storage tank right vent valve 39. The vent valve is a PV valve, i.e., a high-speed vent valve. The vent valve can ensure that the pressure in the methanol storage tank 1 is within the set positive and negative pressure range. The outlets of the methanol storage tank left vent valve 27 and the methanol storage tank right vent valve 39 are not less than 10 meters away from the air inlet or opening of the accommodation, service and machinery space and the fire source, and are not less than 3 meters above the main deck 36.

[0041] The middle platform 37 is provided with a methanol fuel preparation room 3 and a methanol daily use cabin 2. The methanol daily use cabin 2 is arranged inside the methanol fuel preparation room 3. The personnel on board can enter the methanol fuel preparation room 3 from the airlock area 34.

[0042] The methanol daily tank 2 is connected to a methanol daily tank breather valve 29; the methanol daily tank breather valve 29 and the methanol daily tank 2 are connected through a methanol daily tank breather pipe 28. The methanol daily tank breather valve 29 is a high-speed breather valve, which can ensure that the pressure in the methanol fuel daily tank is within the set positive and negative pressure range. The straight-line distance from the outlet of the methanol daily tank breather valve 29 to the air inlet or opening of the accommodation, service and machinery space and the fire source is not less than 10 meters, and it is not less than 3 meters above the main deck 36.

[0043] The methanol discharge tank 32 is connected to a methanol discharge tank vent valve 31; the methanol discharge tank vent valve 31 and the methanol discharge tank 32 are connected through a methanol discharge tank vent pipe 30. The methanol discharge tank vent valve 31 is a high-speed vent valve, which can ensure that the pressure in the methanol fuel discharge tank is within the set positive and negative pressure range. The outlet of the methanol discharge tank vent valve 31 is not less than 10 meters away from the air inlet or opening of the accommodation, service and machinery space and the fire source, and is not less than 3 meters above the main deck 36.

[0044] The ventilation system for pressure release and emergency discharge of the methanol fuel storage tank, the methanol daily tank 2, and the methanol discharge tank 32 is connected to the ventilation mast 40, which is located on the port side of the stern of the main deck 36. It is a truss type and has a platform on the top for repairing each ventilation valve.

[0045] The methanol storage tank 1, the methanol daily tank 2 and the methanol discharge tank 32 are all provided with a methanol tank pressure sensor 17 and connected to the alarm system. When overpressure and vacuum conditions occur, release processing is carried out through the alarm.

[0046] A methanol delivery pipe 5 for delivering methanol fuel is provided between the methanol storage tank 1 and the methanol daily tank 2. The methanol delivery pipe 5 is provided in the port side channel 25 on the intermediate platform 37. A methanol delivery pump 6 is provided in the methanol storage tank 1, and the methanol delivery pump 6 delivers the methanol fuel in the methanol storage tank 1 to the methanol daily tank 2 through the methanol delivery pipe 5.

[0047] A methanol fuel supply unit is provided in the methanol fuel preparation room 3, and the methanol fuel supply unit is connected to the methanol daily cabin 2. The methanol fuel supply unit can be a generator set methanol fuel supply unit 14, or a boiler methanol fuel supply unit 15.

[0048] The engine room 12 is provided with a methanol dual-fuel generator set 18 connected to the generator set methanol fuel supply unit 14 , or a methanol dual-fuel boiler 19 connected to the boiler methanol fuel supply unit 15 .

[0049] The cabin 12 may contain only one or more of the methanol dual-fuel generator set 18 and the methanol dual-fuel boiler 19 .

[0050] The methanol fuel supply unit provides methanol fuel to the methanol dual-fuel generator set 18 and the methanol dual-fuel boiler 19 through the methanol fuel supply pipeline 16. The methanol fuel supply pipeline 16 passing through the engine room 12 and other safety areas is a double-walled pipe.

[0051] A methanol discharge tank discharge pump 33 is provided in the fuel connection location to discharge the methanol in the methanol discharge tank 32 to the shore, thereby safely transporting the contaminated liquid fuel to the shore receiving device.

[0052] A water-glycol heat exchange equipment room 20 is provided on the middle platform 37. The water-glycol heat exchange equipment room 20 is provided with a water-glycol heat exchanger 21 and a circulation pump 22 for heating or cooling the methanol in the methanol fuel supply unit.

[0053] A nitrogen equipment room 23 is provided on the middle platform 37. A nitrogen generator unit 24 is provided in the room for providing nitrogen for inerting the methanol storage tank 1, the methanol daily tank 2 and the methanol discharge tank 32 and for purging the methanol pipeline.

[0054] In this embodiment, the dual methanol fuel related systems also include ventilation system, fire protection system, methanol fuel leakage detection system, methanol fuel filling ship-shore connection system and other auxiliary systems.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A layout of a dual-fuel crane ship methanol fuel system, characterized in that: A methanol storage tank (1) is located in the liquid tank arrangement area in the middle of the rear part of the hull; an isolation tank (10) is arranged around the methanol storage tank (1); the isolation tank (10) is arranged above, in front of and behind the methanol storage tank (1), and is respectively isolated from the main deck (36), the fuel storage tank (11) and the machinery space, and is isolated from the crew passage on the side; a methanol fuel preparation room (3) is arranged on the stern intermediate platform (37), and a methanol daily tank (2) is arranged in the methanol fuel preparation room (3); a methanol delivery pipe (5) for delivering methanol fuel is arranged between the methanol storage tank (1) and the methanol daily tank (2); the methanol delivery pipe (5) is arranged in the side passage of the intermediate platform (37); a nitrogen equipment room (23) and a water-ethylene glycol heat exchange equipment room (20) are also arranged on the stern intermediate platform (37).

2. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 1 is characterized in that: The methanol storage tank (1) is located in the liquid tank arrangement area in the middle of the rear part of the hull, and a fuel tank connection location (4) is provided on the side of the methanol storage tank (1).

3. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 2 is characterized in that: The methanol storage tank (1) is a steel structure tank cabinet without any insulation material or shielding layer.

4. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 1 is characterized in that: The isolation cabin (10) is provided outside the methanol fuel preparation room (3).

5. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 1 is characterized in that: The ventilation system for the methanol storage tank (1), the methanol daily tank (2), and the methanol discharge tank (32) is connected to a ventilation mast (40). The ventilation mast (40) is located at the port side of the stern of the main deck (36) and is of truss type. A platform for repairing each ventilation valve is arranged on the top.

6. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 5 is characterized in that: The methanol storage tank (1), the methanol daily tank (2), and the methanol discharge tank (32) are all provided with pressure sensors and connected to an alarm system. When overpressure or vacuum occurs, release processing is performed through an alarm.

7. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 6 is characterized in that: A discharge pump of the methanol discharge tank (32) is arranged in the fuel connection location to safely transport the contaminated liquid fuel to a receiving device on shore.

8. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 1 is characterized in that: A methanol fuel supply unit is provided in the methanol fuel preparation room (3), and the methanol fuel supply unit is connected to the methanol daily tank (2).

9. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 8 is characterized in that: A methanol dual-fuel boiler (19) connected to the methanol fuel supply unit is provided in the engine room (12), or a methanol dual-fuel generator set (18) connected to the methanol fuel supply unit is provided.

10. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 9 is characterized in that: The middle platform (37) at the stern is provided with the water-ethylene glycol heat exchange equipment room (20), and the water-ethylene glycol heat exchange equipment room (20) is provided with a water-ethylene glycol heat exchanger (21) and a circulation pump (22) group for heating or cooling the methanol in the methanol fuel supply unit.

11. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 7, characterized in that: The intermediate platform (37) at the stern is also provided with the nitrogen equipment room (23), which is equipped with a nitrogen generator unit (24) for providing nitrogen for inerting the methanol storage tank (1), the methanol daily tank (2) and the methanol discharge tank (32), and for purging the methanol pipeline.

12. The arrangement of the methanol fuel system of a dual-fuel crane vessel according to claim 1 is characterized in that: The main deck (36) is provided with a methanol fuel filling station for providing a methanol fuel filling interface, and there are two methanol fuel filling stations, which are respectively close to the port side and the starboard side of the main deck (36).

Images