The utility model content
Technical problem to be solved in the utility model is to provide for the existing problem of traditional fuel oil craft tug a kind of and can provides auxiliary large ship to handle job service in the harbour and satisfy the application liquefied natural gas of Coastal Navigation Areas towing operation requirement/fuel oil dual-fuel craft tug.This application liquefied natural gas/fuel oil dual-fuel craft tug satisfies domestic and international technology and administrative department's (comprising International Maritime Organization (IMO), international petroleum and Gas Industry association and forum, China Classification Society, competent authorities of Chinese Government etc.) in design, and all are applicable to up-to-date pact, standard, the law of LNG carrier and gaseous fuel Power Vessel, the requirement of rules.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of application liquefied natural gas/fuel oil dual-fuel craft tug comprises:
The full welding steel hull of one transverse framing system, single deck, the first post of the template that leans forward and fillet square tail;
Be arranged on the main deck on the described hull;
Be arranged on the main deck chamber on the described main deck;
Be arranged on the chamber, accommodation deck on the described main deck chamber;
Be arranged on the operator's compartment on the chamber, described accommodation deck;
Space between described main deck below and the hull adopts four road watertight transcerse bulkheads to be separated into first Peak Tank, emergency fire pump cabin, chain locker, LNG tank storage cabin, cabin and rudder oar cabin; Wherein said first Peak Tank, described emergency fire pump cabin and described chain locker are positioned at the front portion of described hull, described LNG tank storage cabin and described cabin are positioned at the middle part of hull, described rudder oar cabin is arranged on the afterbody of hull, and described LNG tank storage cabin is positioned at the place ahead in described cabin; Axis with hull in described LNG tank storage cabin is symmetrically arranged with two modular gas fuel supply devices, axis with hull in the described cabin is symmetrically arranged with two LNG/ fuel enginess, and the axis with hull in the described rudder oar cabin is symmetrically arranged with two rudder paddle mechanisms; The described modular gas fuel supply device that is positioned at hull axis homonymy be connected the LNG/ fuel engines and connect by gas pipeline, the clutch end of described LNG/ fuel engines is connected by the power intake of transmission device with the rudder paddle mechanism that is positioned at hull axis homonymy, and the screw propeller in the described rudder paddle mechanism and rudder extend to outside the hull afterbody;
Be provided with an aerator at described main deck, described aerator is connected with the entrance of described modular gas fuel supply device.
In a preferred embodiment of the present utility model, described aerator comprises that filling pipeline and being arranged on fills the logical bank joint of pipeline and fill the valve module that pipeline is connected with described, and the described pipeline that fills is connected with the entrance of described modular gas fuel supply device.
In a preferred embodiment of the present utility model, described valve module comprises a manual shutoff valve and remote-control cut-off valve of mutual series connection.
In a preferred embodiment of the present utility model, described valve module is the combine valve of M/C and remote manipulation.
In a preferred embodiment of the present utility model, be provided with a drip pan described below filling the logical bank joint of pipeline, be provided with a freeing pipe that leads to the hull outboard on the described drip pan.
Described aerator adopts the fire separation of A-60 level.
In a preferred embodiment of the present utility model, be provided with one and fill the nitrogen interface at the described pipeline that fills, the described nitrogen interface that fills connects a nitrogen gas cylinder by the nitrogen blanketing valve road.
In a preferred embodiment of the present utility model, the bilge of the bilge in described cabin and described LNG tank storage cabin is the double-deck bilge.
In a preferred embodiment of the present utility model, described cabin is the essential safe type cabin.
In a preferred embodiment of the present utility model, described LNG tank storage cabin is essential safe type LNG tank storage cabin.
Border between described LNG tank storage cabin and described cabin, described emergency fire pump cabin, described chain locker and the described main deck adopts the air-tightness filler to separate.
In a preferred embodiment of the present utility model, described modular gas fuel supply device comprises an isolation cabinet, is arranged on the LNG tank in the described isolation cabinet and is arranged on described isolation drawing-in type mechanical ventilating system cashier's office in a shop and the assisted heating device that is used for heating LNG tank, described drawing-in type mechanical ventilating system has one and is installed in described isolation blower fan cashier's office in a shop and the air channel that is connected with described blower fan, extend outside the hull in described air channel, is provided with the automatic fire prevention air lock in the described air channel; Described LNG tank is connected with described LNG/ fuel engines by gas pipeline.
Described assisted heating device comprises a temperature booster, an evaporator and refrigerant controlled circulation pipeline, described temperature booster is arranged on the entrance of described gas pipeline, described evaporator is connected with central cooling system interchange of heat on the ship, described temperature booster be connected evaporator and connect by described refrigerant controlled circulation pipeline; The circulation fluid of described assisted heating device is ethylene glycol.
Owing to adopted technical scheme as above; application liquefied natural gas of the present utility model/fuel oil dual-fuel craft tug adopts LNG/ fuel oil hybrid fuel power system; time during the daily operation of boats and ships more than 85% is take LNG fuel as major impetus; greatly reduced disposal of pollutants, environmental protection has been had positive effect.
Cabin, LNG tank storage cabin that the utility model is used liquefied natural gas/fuel oil dual-fuel craft tug have all adopted " essential safe type " design, not only guaranteed the operation of ship safety but also simplified the equipment configuration, have reduced laid down cost.
Mechanical system, fuel system that the utility model is used liquefied natural gas/fuel oil dual-fuel craft tug adopt modular design, subregion layout, cluster assembling, are convenient to the mounting, commissioning and maintenance maintenance.
The systems such as the LNG storage of the utility model application liquefied natural gas/fuel oil dual-fuel craft tug, supply, filling design for innovative form, belong to pioneering both at home and abroad, under the prerequisite that guarantees operation safety, have embodied the design concept of low-carbon energy-saving.The design science of whole LNG fuel system rationally, be easy to realize, convenient operation.
With traditional fuel oil phase ratio, use LNG and can effectively reduce disposal of pollutants as power fuel: carbon dioxide emission reduction is about 22%, and sulfur oxides emissions reduces near 100%, and granular material discharged reduction is near 100%, and discharged nitrous oxides reduces about 92%.
Boats and ships hybrid fuel power system take LNG and fuel oil as fuel relates to driving engine, fuel storage and supply system, control safety monitoring system, fuel supplement is added the integration of all multisystems such as assembling system.Bifuel system worldwide there is no the example that is applied on the craft tug.The ship type that the utility model is described can satisfy the flexible job requirements of craft tug, has successfully used the hybrid fuel power system in limited hull space.This ship is arranged by optimization system, has used many new and high technologies leading in the world and sophisticated equipment, has realized simultaneously safety, road-holding property, the feature of environmental protection of boats and ships, is a novel ship with high-tech content.
The hybrid fuel craft tug is used LNG or fuel oil is power fuel, can control the mutual switching between two kinds of fuel, but can not mix shared.For the consideration of economy and environmental-protecting performance, this ship designs take LNG as major impetus fuel, uses up-to-date binary fuel engine peculiar to vessel and LNG fuel conservation and delivery system.This ship type has been filled up the blank of domestic seagoing vessel design and construction applications technically, worldwide belongs to industry lead in the development of science and technology product, possesses larger development potentiality and higher technological precedence level.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Referring to Fig. 1 and Fig. 2, a kind of application liquefied natural gas that provides among the figure/fuel oil dual-fuel craft tug comprises a transverse framing system, single deck, the full welding steel hull 100 of the first post of the template that leans forward, fillet square tail; Be provided with main deck 110 at this hull 100, the middle front part near hull 100 on main deck 110 is provided with main deck chamber 180, is provided with chamber, accommodation deck 190 in main deck chamber 180, is provided with operator's compartment 190a in chamber, accommodation deck 190.
Main deck 110 belows of full ship and and hull 100 between the space adopt four road watertight transcerse bulkheads to be separated into first Peak Tank 120, emergency fire pump cabin 130, chain locker 140, LNG tank storage cabin 150, cabin 160, rudder oar cabin 170; Wherein first Peak Tank 120, emergency fire pump cabin 130, chain locker 140 are positioned at the front portion of hull 100, LNG tank storage cabin 150 and cabin 160 are positioned at the middle part of hull 100, rudder oar cabin 170 is arranged on the afterbody of hull 100, and LNG tank storage cabin 150 is positioned at the place ahead in cabin 160; Border between LNG tank storage cabin 150 and cabin 160, emergency fire pump cabin 130, chain locker 140, the main deck 110 adopts the air-tightness filler to separate.
Axis with hull 100 in each LNG tank storage cabin 150 is symmetrically arranged with two modular gas fuel supply devices 200, axis with hull in each cabin 160 is symmetrically arranged with two LNG/ fuel enginess 300, and the axis with hull in each rudder oar cabin 170 is symmetrically arranged with two rudder paddle mechanisms 400.
The modular gas fuel supply device 200 of the same side, axis of hull 100 is connected with the LNG/ fuel engines 300 of this side by gas pipeline, the power output of the LNG/ fuel engines 300 of this side is connected by the power intake of transmission device with the rudder paddle mechanism 400 of this side, and the screw propeller 410 in the rudder paddle mechanism 400 and rudder 420 extend to outside hull 100 afterbodys.
This ship is designed to LNG/ fuel oil binary fuel engine with power system and advances, and two-shipper Twin Rudders oar, middle cabin type are arranged.The cabin mechanical equipment is pressed the principle of system partitioning, cluster and is arranged, and considers the installation, maintenance easy maintenance, adopts unit assemblingization design.
Cabin 160 is the essential safe type cabin, and the bilge in cabin 160 is the double-deck bilge, and engine-room fan and other electrical equipments do not need explosion-proof like this.
LNG tank storage cabin 150 is essential safe type LNG tank storage cabin, and the bilge of LNG tank storage cabin 150 is the double-deck bilge, and the electrical equipment in the LNG tank storage cabin is not done special requirement of explosion proof like this.
This ship provides two covers to specialize in the modular gas fuel supply device 200 of LNG/ fuel engines 300.Every set of modules oxidizing gases fuel supply device 200 comprises that is independently isolated a cabinet 210(TANK ROOM), in isolation cabinet 210, be provided with a corrosion-resistant steel LNG tank 220, corrosion-resistant steel LNG tank 220 is pressure container, and it is connected with LNG/ fuel engines 300 by gas pipeline.Corrosion-resistant steel LNG tank 220, gas pipeline require to do corresponding technical finesse with the material of the parts that other contact with gas according to related specifications.The related specifications requirement is satisfied in the design and installation of gas pipeline.The storage of modular gas fuel supply device 200, supply and use, the hazardous location that it is produced is as far as possible little.
The layout design of gas pipeline is considered thermal deformation and corrosion-resistant steel LNG tank 220 and hull 100 moving of member and is caused the impact of excessive stresses.Gas pipeline is suitably supported and is fixed, and the installation of gas pipeline has enough flexible, prevents that it is by mechanical damage.Use less flexible pipe, flange on the gas pipeline as far as possible, do not use the sliding type expansion pipe.
All need take good electrical grounding measure to gas pipeline and corrosion-resistant steel LNG tank 220.The narrow spacing of gas pipeline and corrosion-resistant steel LNG tank 220 disembark bodies 100 outside plates should satisfy the related specifications requirement.Gas pipeline avoids running through daily life place, service place or control station.Fuel adding, the monitor and alarm system of gas supply system and dry gas engine should meet the related specifications requirement.
Drawing-in type mechanical ventilating system on isolation cabinet 210, this drawing-in type mechanical ventilating system have a blower fan and the air channel that is connected with blower fan that is installed on the isolation cabinet 210, and extend outside the hull in the air channel, is provided with the automatic fire prevention air lock in this air channel.
Every set of modules oxidizing gases fuel supply device 200 also comprises the assisted heating device for heating LNG tank, assisted heating device comprises a temperature booster, an evaporator and refrigerant controlled circulation pipeline, temperature booster is arranged on the entrance of gas pipeline, evaporator is connected with central cooling system interchange of heat on the ship, described temperature booster be connected evaporator and connect by described refrigerant controlled circulation pipeline; The circulation fluid of assisted heating device is ethylene glycol.
Be provided with an aerator at main deck 110, be used for the aerating of groove tank car or special gas station.Adopt the fire separation of A-60 level between aerator and other place.
Aerator comprise fill pipeline 410 and be arranged on fill pipeline 410 logical bank joints and with the valve module that fills pipeline 410 and connect, this fills pipeline and is connected with the entrance of corrosion-resistant steel LNG tank 220.Wherein valve module can or be the combine valve of M/C and remote manipulation for mutual manual shutoff valve and a remote-control cut-off valve of connecting, can be at control position or other perch operating valve assemblies of fuel charging operation.
Entrance, air intlet and other openings of daily life place, service place, engine space and control station is towards filling pipeline 510 logical bank joints.
Below filling the logical bank joints of pipeline 510, be provided with a drip pan, be provided with a freeing pipe that leads to the hull outboard on the drip pan.
Be provided with one and fill the nitrogen interface filling pipeline 510, fill the nitrogen interface and connect a nitrogen gas cylinder by the nitrogen blanketing valve road.Fill when finishing and to adopt N
2Liquid or combustion gas are discharged from fill pipeline.