CN106458310B - Ship - Google Patents
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- Publication number
- CN106458310B CN106458310B CN201580025565.8A CN201580025565A CN106458310B CN 106458310 B CN106458310 B CN 106458310B CN 201580025565 A CN201580025565 A CN 201580025565A CN 106458310 B CN106458310 B CN 106458310B
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- China
- Prior art keywords
- gas
- pressure
- diesel engine
- valve
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/05—Regasification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/066—Fluid distribution for feeding engines for propulsion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
- Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Ship has：Store the storage tank of liquid gas；Driving is provided with multiple diesel engines of the main shaft of propeller；The increasing apparatus that the liquid gas or boil-off gas that are supplied from storage tank are boosted；With the feeding pipe extended from increasing apparatus to multiple diesel engines.Increasing apparatus boosts the liquid gas or boil-off gas that are supplied from storage tank, so that the boil-off gas of supply to diesel engine is higher than highest demand pressure in the requirement pressure of multiple diesel engines.Feeding pipe includes the primary flow path being connect with increasing apparatus and a plurality of bifurcated road.A plurality of bifurcated road is respectively arranged with pressure-regulating valve.
Description
Technical field
The present invention relates to the ships for being equipped with the multiple diesel engines for using gas as fuel.
Background technology
In recent years, from the viewpoint of carrying capacity of environment using by natural gas as the burning gas diesel engine of fuel as propulsion host
Ship attract attention.As the ship for being equipped with burning gas diesel engine, it is known to carry multiple host, and be driven by each host
The ship of the multimachine multiaxial type of the dynamic main shaft for being provided with propeller.
Such as in patent document 1, the low speed binary fuel diesel oil having as gas diesel engine is burnt is disclosed（DFD；
Dual Fuel Diesel）The ship of engine and two-shipper twin axle by the engine-driven propellers of low speed DFD.The ship
Oceangoing ship has：Store the LNG storage tank of LNG；The LNG pump being configured in LNG storage tank；With will be supplied by LNG pump from LNG storage tank
LNG is high-pressure gasified and supplies the LNG after high-pressure gasified to the high pressure fuel gas feed system of low speed DFD engines.Separately
Outside, although not recorded specifically in patent document 1, it includes high-pressure pump that can speculate that high pressure gas feed system is（Boosting dress
It sets）With the system of gasifier.
Existing technical literature：
Patent document：
Patent document 1：Japanese Unexamined Patent Publication 2013-193503 bulletins.
Invention content
Problems to be solved by the invention：
However, being equipped in the ship for the multimachine multiaxial type for burning gas diesel engine, there are defeated required by each engine
Go out the different situation of power.For example, engine, propeller deposit individual difference during fabrication, when being driven with identical rotation number
Necessary output power generates difference.Also, in order to make hull advance in crosswind, wave, existing purposefully makes multiple spiral shells
The case where revolving the rotation number change of paddle.Preferably such case supplies pressure corresponding with the output power required by each engine
Fuel gas.But in ship disclosed in patent document 1, supplied from a high pressure gas feed system to two-shipper engine
Fuel gas cannot supply the fuel gas of different pressures to each engine.It, can be in order to supply the fuel gas of different pressures
Consider that high pressure gas feed system is arranged on each engine, but since the installation space in ship is limited, so empty from saving
Between viewpoint, preferably by including high-pressure pump, gasifier etc. high pressure gas feed system setting on the engine.
Therefore, the purpose of the present invention is to provide can supply different pressures to the gas diesel engine that burns more than two-shipper
Fuel gas, and it is possible to realize the ships for saving spatialization.
The means solved the problems, such as：
In order to solve aforementioned described problem, ship according to the present invention is characterized in that having：Store liquid gas storage
Tank；Boil-off gas after the gasifying liquefied gas is used to as fuel and is driven the multiple bavins for the main shaft for being provided with propeller
Oil turbine；The liquid gas or boil-off gas that are supplied from the storage tank are boosted, so as to supply to the diesel engine
Increasing apparatus of the boil-off gas higher than highest demand pressure in the requirement pressure of the multiple diesel engine；From the increasing apparatus
To the multiple diesel engine extend feeding pipe, and include the primary flow path being connect with the increasing apparatus and with it is described
The feeding pipe on a plurality of bifurcated road of multiple diesel engine connections；It is adjusted with the pressure for being respectively arranged at a plurality of bifurcated road
Valve.
According to above structure, it is respectively arranged with pressure-regulating valve with the bifurcated road of diesel engine connection, so can divide
Not Tiao Jie pressure-regulating valve aperture, make to the supply gas of engine pressure be and the output power required by each diesel engine
Corresponding pressure.Also, multiple diesel engines can be supplied with the fuel gas of different pressures by an increasing apparatus, so
Compared in order to supply the fuel gas of different pressures to each engine, high pressure gas feed system is set on each engine
Ship, it is possible to realize the saving spatializations in ship.
Can also be that in said structure, the increasing apparatus is the pump that the liquid gas boosts, the primary flow path
On be provided with make from it is described pump spray gasifying liquefied gas gasifier.
Can also be in said structure, to be also equipped with：Distinguish required pressure, control according to the multiple diesel engine
The control device of the pressure-regulating valve；Part bifurcated between pump and the gasifier described in the primary flow path and connection
To the return line of the storage tank；With the flow control valve for being set to the return line, the control device is according to described more
A diesel engine distinguishes required pressure, controls the pump and the flow control valve.According to the structure, filled by control
It sets, pump and flow control valve can be controlled, so as to adjust by the pressure of the boil-off gas of gasifier gasification, that is, adjust bifurcated road
Pressure-regulating valve primary side pressure.Therefore, it according to the requirement pressure of engine, can be kept with the pressure difference of pressure-regulating valve
Form in prescribed limit suitably changes the primary pressure of pressure-regulating valve.
Can also be that above-mentioned ship is also equipped with：It is connected to the bypass flow path of the primary side and secondary Side of the pressure-regulating valve；
With the pressure-regulating valve or open and close valve for being set to the bypass flow path.It is arranged side by side with the pressure-regulating valve on bifurcated road according to the structure
Ground is when pressure-regulating valve is arranged in bypass flow path, if the flow rate adjustable of these pressure-regulating valves is different, according to engine
Gas flow, the requirement pressure from engine change the pressure-regulating valve that uses, so as to suitably adjust to engine
Supply gas pressure.Also, when open and close valve is arranged in bypass flow path, by opening the open and close valve, the pressure tune on bifurcated road can be made
The upstream side of whole valve is uniform pressure with downstream side.
Can also be that above-mentioned ship is also equipped with：Connect respectively in the downstream side of the pressure-regulating valve and a plurality of bifurcated road
Logical multiple buffer reservoirs；Be set to the downstream side part of the pressure-regulating valve on each a plurality of bifurcated road with it is each the multiple slow
Rush the open and close valve of the connected component of storage tank；The pressure relief pipe being separately connected with each the multiple buffer reservoir；It is described with being set to
The relief valve of pressure relief pipe.
One in multiple diesel engines is due to engine problem and when stopping, the gas consumption of the engine of ship entirety
Gas more than amount is supplied to engine side, rises to the gas pressure of feeding pipe.In this regard, according to above structure, pass through
The open and close valve of the entrance of buffer reservoir is closed, and opens the relief valve for being set to pressure relief pipe, it is low pressure that can make buffer reservoir.
That is, when generating gas pressure due to feeding pipes such as engine problems and rise, makes opening open and close valve and keep the buffer reservoir of low pressure
It is connected to feeding pipe, so as to prevent the pressure drastically of feeding pipe from rising.
Can also be that above-mentioned ship is also equipped with：Two-way feed pipeline, a plurality of bifurcated road described in the two-way feed pipeline connection
In the downstream side part of pressure-regulating valve and different from the first bifurcated road described in a plurality of bifurcated road in the first bifurcated road
The downstream side part of pressure-regulating valve in second bifurcated road；With the cross feed valve for being set to the two-way feed pipeline.According to
The structure, even if the pressure-regulating valve on any one bifurcated road generates failure and the gas pressure of side downstream is made to be unable to adjust
Gas supply can be carried out by two-way feed pipeline on the engine in the downstream side for the pressure-regulating valve for generating failure.Also,
When cross feed valve is pressure-regulating valve, flow control valve, it can adjust to the downstream side for the pressure-regulating valve for generating failure
The supply gas pressure of engine.
Can also be that above-mentioned ship is also equipped with：Two-way feed pipeline, a plurality of bifurcated road described in the two-way feed pipeline connection
In the downstream side part of pressure-regulating valve and different from the first bifurcated road described in a plurality of bifurcated road in the first bifurcated road
The downstream side part of pressure-regulating valve in second bifurcated road；It is set to the buffer reservoir of the two-way feed pipeline；It is set to institute
State the first open and close valve of the part between buffer reservoir described in two-way feed pipeline and first bifurcated road；Be set to institute
State the second open and close valve of the part between buffer reservoir described in two-way feed pipeline and second bifurcated road.According to the knot
Structure, a plurality of bifurcated road is provided with common buffer reservoir, so It is not necessary to buffer reservoir is arranged on each engine.Cause
This, it is possible to realize the saving spatializations in ship.
Can also be that above-mentioned ship is also equipped with：The relief tube being connect with the buffer reservoir of the two-way feed pipeline
Road；With the relief valve for being set to the pressure relief pipe.One in multiple diesel engines is due to engine problem and when stopping,
The gas more than gas consumption of the engine of ship entirety is supplied to engine side, in the gas pressure of feeding pipe
It rises.In this regard, according to above structure, the open and close valve of the entrance by closing buffer reservoir, and open and be set to letting out for pressure relief pipe
Pressure valve, it is low pressure that can make buffer reservoir.That is, when generating gas pressure due to engine problem etc. and rise, make opening open and close valve and
It keeps the buffer reservoir of low pressure to be connected to bifurcated road, can prevent the pressure drastically of feeding pipe from rising.
Can also be above-mentioned diesel engine, be can only by oil as fuel use oil operating and only by gas or by
Switch between the gas operating that both oil and gas are used as fuel, and diffusion combustion oil when oil operating, gas expand when operating
Dissipate the binary fuel diesel engine of burning gases.According to the structure, gas operating can be rapidly switched to from oil operating.
Can also be above-mentioned diesel engine, be can only by oil as fuel use oil operating and only by gas or by
Switch between the gas operating that both oil and gas are used as fuel, and diffusion combustion oil when oil operating, gas are pre- when operating
First it is mixed and burned the binary fuel diesel engine of gas.According to the structure, gas operating can be rapidly switched to from oil operating.
Also, can also be above-mentioned diesel engine when being operated by gaseous fuel, according to the output power of diesel engine
Change and requires pressure.
Invention effect：
In accordance with the invention it is possible to provide a kind of fuel that can supply different pressures to burning gas diesel engine more than two-shipper
Gas, and it is possible to realize the ships for saving spatialization.
Description of the drawings
Fig. 1 is the general configuration figure for the part for showing the ship according to first embodiment of the present invention；
Fig. 2 is the general configuration figure for the part for showing the ship according to the second implementation form of the invention；
Fig. 3 is the general configuration figure for the part for showing the ship according to third implementation form of the present invention；
Fig. 4 is the general configuration figure for the part for showing the ship according to the 4th implementation form of the invention；
Fig. 5 is the general configuration figure for the part for showing the ship according to the 5th implementation form of the invention；
Fig. 6 is the general configuration figure for the part for showing the ship according to the 6th implementation form of the invention；
Fig. 7 is the figure for the variation for showing the gas supply system in the ship of Fig. 1.
Specific implementation mode
Hereinafter, being described with reference to the implementation form of the present invention.Below for same or comparable element in all attached drawings
It is marked with identical symbol, and omits repeated explanation.
(first embodiment)
Fig. 1 shows a part of the ship 1A according to first embodiment of the present invention.Ship 1A is led as propulsion
Machine is that have the first diesel engine 51a（Hereinafter referred merely to as " the first engine 51a "）With the second diesel engine 51b（Below
It is only called " the second engine 51b "）Two-shipper twin axle ship.First engine 51a drivings are provided with the master of propeller 53a
Axis 52a, the second engine 51b drivings are provided with the main shaft 52b of propeller 53b.
Also, both the first engine 51a and the second engine 51b can regard oil and gas as fuel utilization
DFD engines.Ship 1A has：For the oil of oil supply to engine 51a, 51b to be supplied by oily feeding pipe 54a, 54b
To system（It is not shown）；With the gas supply system 10A for providing gas tangentially to engine 51a, 51b.
Gas supply system 10A is supplied the boil-off gas after gasifying liquefied gas as fuel to engine 51a, 51b.
Gas supply system 10A includes：Store the storage tank 2 of liquid gas；The high-pressure pump that the liquid gas supplied from storage tank 2 is boosted
（One example of the increasing apparatus of the present invention）41；With the gas feed line extended from high-pressure pump 41 to engine 51a, 51b
3.Also, being provided with the gasifier 42 for the gasifying liquefied gas for making to spray from high-pressure pump 41 on gas feed line 3.
Storage tank 2 is at least one for the large-scale conveying storage tank in the arrangement of the captain direction of ship 1A.But conveying storage tank
Suction cylinder is configured between aftermentioned high-pressure pump 41（suction drum）When, storage tank 2 can also be the suction cylinder.The implementation
The liquid gas of form being stored in storage tank 2 is LNG, and storage tank 2 has the thermal protective performance that can keep extremely low temperature state so that LNG
It can keep the liquid condition of -162 DEG C of pact under atmospheric pressure.In addition, liquid gas is not necessarily to be LNG, such as can also be
LPG, liquified hydrogen etc..
High-pressure pump 41 is controlled by control device 45, and the liquid gas supplied from storage tank 2 is boosted, so as to supply to the first hair
Motivation 51a and the second engine 51b and the boil-off gas to be gasified by gasifier 42, which are higher than, to be required to press（Such as 15~30MPa）.
Herein, it " supplies to the first engine 51a and the second engine 51b and the boil-off gas that is gasified by gasifier 42 higher than requiring
Pressure " is meant：Higher than highest demand pressure in the respective requirement pressures of the first engine 51a and the second engine 51b.High pressure
Pump 41, e.g. piston pump include the multiple pistons for being driven by hydraulic motor and being released liquid gas from cylinder.Also, high pressure
Pump 41 is formed as its rotation number（For example, the rotation number of hydraulic motor）Modifiable structure, and can be rotated with high-pressure pump 41
Probably proportionally change pumps spray volume to number.
Gasifier 42 is, for example, the heat exchanger that coiled pipe is configured in shell.Shell and the circulation line of illustration omitted connect,
By shell and circulation line, the thermal medium such as ethylene glycol is made to recycle.
Gas feed line 3 includes：The primary flow path 31 being connect with high-pressure pump 41；Two bifurcateds being connected to with primary flow path 31
Road（First bifurcated road 32 and the second bifurcated road 33）.First bifurcated road 32 is connect with the first engine 51a, the second bifurcated road 33 with
Second engine 51b connections.Gasifier 42 is set to the primary flow path 31 of gas feed line 3.
Gas supply system 10A is also equipped with：From the high-pressure pump 41 and gasifier 42 of the primary flow path 31 of gas feed line 3 it
Between part bifurcated and be attached to the return line 44 of storage tank 2；With the flow control valve 43 for being set to return line 44.By high pressure
The liquid gas of 41 boosting of pump, part of it can return to storage tank 2 by the return line 44, and can be by control device 45
The aperture of flow control valve 43 is changed so as to adjust the flow of the liquid gas of return line 44 is passed through.In the implementation form, lead to
The aperture for crossing the rotation number and flow control valve 43 of adjustment high-pressure pump 41, can adjust by the gasification in the downstream side of high-pressure pump 41
The pressure for the boil-off gas that device 42 gasifies.By the pressure for the boil-off gas that gasifier 42 gasifies, be than the first engine 51a and
Second engine 51b is respective to require the higher pressure for requiring pressure loss amount caused by pressure height pressure-regulating valve in pressure.
Also, can also be to be incited somebody to action in the form of not changing the pressure of the boil-off gas to be gasified by gasifier 42 according to the variation for requiring pressure
The pressure of the boil-off gas to be gasified by gasifier 42 is adjusted in the utilization than the first engine 51a and the second engine 51b
The high pressure of pressure loss amount of maximum pressure.
It is provided with first pressure adjustment valve 61a on first bifurcated road 32, second pressure tune is provided on the second bifurcated road 33
Whole valve 61b.The aperture that valve 61a is adjusted by controlling first pressure can change the first pressure adjustment valve on the first bifurcated road 32
The pressure of the downstream side part 322 of 61a.Also, adjusting the aperture of valve 61b by controlling second pressure, the second bifurcated can be changed
The pressure of the downstream side part 332 of the second pressure adjustment valve 61b on road 33.
The downstream side part 322 of the first pressure adjustment valve 61a on the first bifurcated road 32 is connected to buffer reservoir 71a, in addition, second
The downstream side part 332 of the second pressure adjustment valve 61b on bifurcated road 33 is connected to buffer reservoir 71b.By buffer reservoir 71a,
71b can prevent the pressure oscillation drastically of gas feed line 3.
Also, being provided with conduct close to the downstream side in downstream than the bifurcation towards buffer reservoir 71a in the first bifurcated road 32
First switching valve 63a of open and close valve, than the bifurcation towards buffer reservoir 71b close to the downstream in downstream in the second bifurcated road 33
Side is provided with the second switching valve 63b as open and close valve.First switching valve 63a is before the gas operating of the first engine 51a
It opens, front openings of the second switching valve 63b in the gas operating of the second engine 51b.Also, first switching on the first bifurcated road 32
It is provided with accumulator between valve 63a and the first engine 51a（accumulator）64a, second switching valve on the second bifurcated road 33
It is provided with accumulator 64b between 63b and the second engine 51b.
First engine 51a and the second engine 51b is the injection of electronic control type gas（injection ）（ME-
GI）The DFD engines of mode allow hand over by electronic control and only operate the oil that oil is used as fuel, and only by gas
Or oil and gas are operated as the gas of fuel.When each comfortable oil of first engine 51a and the second engine 51b operates
Diffusion combustion oil, the diffusion combustion gas when gas operates.
Be connected on first engine 51a and the second engine 51b control engine gas injection pressure, gas operating with
The engine control section of the switching of oil operating（It is not shown）.Engine control section will pressure corresponding with each engine output
（Hereinafter referred to as " it is required that pressure "）Boil-off gas require to the control device 45 of gas supply system 10A.Gas supply system
10A, using as to the supply gas pressure of the first engine 51a and the second engine 51b be adjusted to require gas pressure（It is required that
Pressure）Form, adjust separately the aperture of pressure-regulating valve 61a, 61b.In Fig. 1 and attached drawing later, in order to simplify attached drawing, save
Slightly by the control line between each structural unit controlled of control device 45 and control device 45.
For example, the first engine 51a requirement pressure be 28MPa, and the second engine 51b requirement pressure be 24MPa when, by
The boil-off gas that gasifier 42 gasifies is the higher pressure for requiring pressure higher than in these requirements pressure, for example, will by high-pressure pump 41
Liquid gas boosts to 29MPa.Moreover, by control device 45, the aperture of adjustment first pressure adjustment valve 61a, so that first
Gas pressure in bifurcated road 32 than first pressure adjustment valve 61a close to the downstream side part 322 in downstream is 28MPa, adjustment second
The aperture of pressure-regulating valve 61b, so that than second pressure adjustment valve 61b close to the downstream side part in downstream in the second bifurcated road 33
332 gas pressure is 24MPa.
As described above, the ship 1A of this implementation form is fed to the hairs of the first engine 51a and second by high-pressure pump 41
The boil-off gas of motivation 51b boosts to the requirement pressure higher than engine, and with the first engine 51a and the second engine 51b
It is respectively arranged with pressure-regulating valve 61a, 61b on the bifurcated road 32,33 of connection.Therefore, even if the hairs of the first engine 51a and second
Motivation 51b by the fuel gas requirement of different pressures to gas supply system 10A, can also adjust respectively pressure-regulating valve 61a,
The aperture of 61b, to make to the supply gas of engine pressure to be pressure corresponding with the output power required by each engine.
Also, the fuel gas of different pressures can be supplied by gas supply system 10A couples of two engines 51a, 51b, so comparing
Setting gas supply system on each engine and the ship for supplying the fuel gas of different pressures, can reach and be supplied to engine
To the saving spatialization of the gas supply system of gas.
However, in the structure of ship disclosed in patent document 1, there are multiple engines to start gas operating one by one
The case where.For example, certain engine other engines in gas operating start gas operating, that is, when consuming gas, then exist
The gas delivery volume of engine supply in this backward gas operating can also change.It is therefore preferable that being to be opened even if gas operating
Gas consumption variation when the beginning, also can be to the engine stabilizer ground sustainable supply gas for continuing gas and operating.Also, preferably i.e.
It, also can be to other when some engine stops gas operating suddenly due to problem etc. in engine in making multiple gases operate
Engine continue that gas is stably supplied.
In the ship 1A of this implementation form, it is in gas operating in the first engine 51a, starts the second engine 51b
Gas operating in the case of, can make in the second bifurcated road 33 than second pressure adjustment valve 61b close to downstream downstream side and
After the upstream part of second switching valve 63b boosts to the pressure of setting with the gas pressure of buffer reservoir 71b, the second switching is opened
Valve 63b.The gas of the upstream side of buffer reservoir 71b and the second switching valve 63b flows into the downstream side of the second switching valve 63b
Accumulator 64b can make the gas than second pressure adjustment valve 61b close to the downstream side part 332 in downstream in the second bifurcated road 33
Pressure drop is low.But it by keeping boosting to the gas of setting pressure in buffer reservoir 71b, can prevent from opening the second switching
The reduction of pressure drastically when valve 63b.
Also, in the ship 1A of this implementation form, the first engine 51a is in gas operating, and the second engine 51b is opened
When beginning or stop gas operating, the change that valve 61b can make the gas flow on the second bifurcated of inflow road 33 is adjusted by second pressure
Change is slowed by, therefore gas can be stably supplied to the first engine 51a in gas operating.
That is, can control the rotation number of high-pressure pump 41, the aperture of flow control valve 43, first pressure adjustment valve 61a and
Second pressure adjusts valve 61b, so that than first pressure adjustment valve 61a close to the downstream side part in downstream in the first bifurcated road 32
322 gas pressure will not drastically reduce and be detached from allowable range, also, than second pressure adjustment valve 61b in the second bifurcated road 33
Gas pressure close to the downstream side part 332 in downstream is adjusted to the requirement pressure of the second engine 51b.It whereby, can will be to gas
The variation control of the supply gas pressure of the first engine 51a in body operating within the allowable range, while making to the second engine
The supply gas pressure of 51b rises.Therefore, it is possible to make to gas operate in the first engine 51a gas supply steadily after
It is continuous, start simultaneously at the gas operating of the second engine 51b.
(the second implementation form)
Then, the ship 1B according to the second implementation form of the invention is illustrated with reference to Fig. 2.According to the gas of the second implementation form
Feed system 10B has：The structural unit of first embodiment, in addition first pressure adjusts valve in the first bifurcated road 32 of connection
The bypass flow path 34a of 61a primary sides and secondary Side；With the primary side for being connected to second pressure adjustment valve 61b in the second bifurcated road 33
With the bypass flow path 34b of secondary Side.Also, in the gas supply system 10B according to the second implementation form, on bypass flow path 34a
It is provided on flow rate adjustable third the pressure-regulating valve 62a, bypass flow path 34b different from first pressure adjustment valve 61a and is arranged
The 4th pressure-regulating valve 62b for having flow rate adjustable different from second pressure adjustment valve 61b.
This implementation form can also obtain effect same as first embodiment.Also, in this implementation form, will can adjust
The flow third pressure-regulating valve 62a different from first pressure adjustment valve 61a is arranged on bypass flow path 34a, by adjustable rectification
The fourth pressure-regulating valve 62b different from second pressure adjustment valve 61b is measured to be arranged on bypass flow path 34b.Therefore, it is possible to basis
The requirement pressure of engine, properly select in order to pressure adjusts and the pressure-regulating valve that uses adjusts gas pressure.For example, making
One engine 51a is for low output power and to the gas flow of the first engine 51a in the adjustable of first pressure adjustment valve 61a
When outside the range of flow, first pressure can be replaced to adjust valve 61a, and be used in the bypass stream in the range of flow rate adjustable
The third pressure-regulating valve 62a of road 34a adjusts gas pressure.Whereby, the supply gas pressure to engine, example can suitably be adjusted
Such as, even if can steadily carry out pressure adjustment if when the gas consumption of engine is less.
Can also be to be set to the valve of bypass flow path 34a, 34b as open and close valve also, in the implementation form.In bypass flow path
On 34a, 34b be arranged open and close valve when, by opening the open and close valve, can without bifurcated road 32,33 pressure-regulating valve 61a,
The pressure of 61b adjusts, and the pressure loss in the upstream side 321,331 for making bifurcated road 32,33 and downstream side 322,332 is minimum.
(third implementation form)
Then, the ship 1C according to third implementation form of the present invention is illustrated with reference to Fig. 3.According to the ship of third implementation form
1C has：The structural unit of first embodiment, in addition first pressure adjusts the downstream side of valve 61a in the first bifurcated road 32 of connection
The two-way feed of the downstream side part 332 of second pressure adjustment valve 61b in part 322 and the second bifurcated road 33（crossfeed）
Pipeline 82；With the cross feed valve 81 for being set to two-way feed pipeline 82.
Can also be cross feed valve 81 be gas can be made towards the flow control valve of 82 two-way flow of two-way feed pipeline.
When cross feed valve 81 is flow control valve, gas flow is adjusted by the cross feed valve 81, so as to adjust the first bifurcated
Second pressure adjusts the downstream of valve 61b in the downstream side part 322 and the second bifurcated road 33 of first pressure adjustment valve 61a in road 32
Side section 332.Also, can also be cross feed valve 81 be pressure-regulating valve.Also, can also be with multiple cross feed valves 81
And two-way feed pipeline 82.
This implementation form can also obtain effect same as first embodiment.Also, even if any one bifurcated road
When pressure-regulating valve generates failure and the gas of side downstream is made to press adjustment that cannot carry out, under the pressure-regulating valve for generating failure
On the engine for swimming side, gas supply can be also carried out by two-way feed pipeline, and pressure tune is carried out by cross feed valve
It is whole.For example, even if the second pressure on the second bifurcated road 33 adjusts valve 61b generation failures and make the gas of side section 332 downstream
Pressure adjusts when cannot carry out, and on the second engine 51b for generating the downstream side of the second pressure adjustment valve 61b of failure, also can
Gas supply is carried out by two-way feed pipeline 82, and carries out gas pressure by the cross feed valve of two-way feed pipeline 82 81 and adjusts
It is whole.
(the 4th implementation form)
Then, the ship 1D according to the 4th implementation form of the invention is illustrated with reference to Fig. 4.According to the ship of the 4th implementation form
1D has：The structural unit of first embodiment, in addition first pressure adjusts the downstream side of valve 61a in the first bifurcated road 32 of connection
The two-way feed pipeline 94 of the downstream side part 332 of second pressure adjustment valve 61b in part 322 and the second bifurcated road 33.Also, root
According to the ship 1D of the 4th implementation form, instead of first embodiment the buffer reservoir 71a being connected to the first bifurcated road 32 and with
The buffer reservoir 71b of second bifurcated road 33 connection, and buffer reservoir 91 is provided on two-way feed pipeline 94.Two-way feed pipe
The first open and close valve 92, two-way feed pipeline are provided on part 94a between the buffer reservoir 91 on road 94 and the first bifurcated road 32
The second open and close valve 93 is provided on part 94b between 94 buffer reservoir 91 and the second bifurcated road 33.
This implementation form can also obtain effect same as first embodiment.Also, such as the second engine 51b due to
Engine problem and when stopping, by opening the second open and close valve 93, buffer reservoir 91 is made to be connected to gas feed line 3, thus
It can prevent the pressure drastically on the second bifurcated road 33 in gas feed line 3 from rising.In addition, in this implementation form, it is not necessarily to
Buffer reservoir is set on each engine, so it is possible to realize the saving spatializations in ship.
(the 5th implementation form)
Then, the ship 1E according to the 5th implementation form of the invention is illustrated with reference to Fig. 5.According to the ship of the 5th implementation form
1E has：The structural unit of first embodiment, in addition being set to the downstream of first pressure adjustment valve 61a in the first bifurcated road 32
The open and close valve 73a of the connected component 72a of side section 322 and buffer reservoir 71a；Be set to second pressure in the second bifurcated road 33
Adjust the open and close valve 73b of the downstream side part 332 of valve 61b and the connected component 72b of buffer reservoir 71b.Also, implementing according to the 5th
The ship 1E of form is also equipped with：It is connect respectively with buffer reservoir 71a, 71b to make the boil-off gas in buffer reservoir escape
Pressure relief pipe 75a, 75b；With relief valve 74a, the 74b being respectively arranged on pressure relief pipe 75a, 75b.
Relief valve 74a, 74b are, for example, pressure-regulating valve, flow control valve.Can also be under pressure relief pipe 75a, 75b
Trip side top end is, for example, to be connect with storage tank 2, so that a part for the boil-off gas in buffer reservoir passes through pressure relief pipe 75a, 75b
Return to storage tank 2.Alternatively, the downstream side top end that can also be pressure relief pipe 75a, 75b is, for example, with dynamo engine, boiler etc.
Connection a, so that part for the boil-off gas in buffer reservoir is by pressure relief pipe 75a, 75b and is used as dynamo engine, pot
Stove（It is not shown）Deng fuel be supplied to.Alternatively, the downstream side top end that can also be pressure relief pipe 75a, 75b is, for example, and burning
Processing system（It is not shown）Connection a, so that part for boil-off gas is incinerated in buffer reservoir.
This implementation form can also obtain effect same as first embodiment.
However, one in the first engine 51a and the second engine 51b, due to engine problem and when stopping, ship is whole
The gas consumption of the engine of body about halves, and the gas pressure of gas feed line 3 temporarily rises.But this implementation shape
In state, by closing open and close valve 73a, 73b in advance, and relief valve 74a, the 74b for being set to pressure relief pipe 75a, 75b, energy are opened
It is low pressure enough to make buffer reservoir 71a, 71b.That is, when generating gas pressure rising due to the gas feed lines such as engine problem 3, make
It opens open and close valve 73a, 73b and buffer reservoir 71a, 71b of low pressure is kept to be connected to gas feed line 3, so as to prevent
The pressure drastically of gas feed line 3 rises.
Also, by opening open and close valve 73a, 73b, and relief valve 74a, the 74b for being set to pressure relief pipe 75a, 75b are closed,
The pressure in buffer reservoir 71a, 71b can be made equal with to the supply gas of engine pressure.Whereby, unexpected for engine
Load rises, and can reduce pressure oscillation.
In addition, when each engine is not located in gas operating, for example, when each engine is operated all in oil, ship ship
When oceangoing ship 1E berths, by opening open and close valve 73a, 73b, and relief valve 74a, the 74b for being set to pressure relief pipe 75a, 75b are opened,
It can be by the whole decompression of gas feed line 3.
(the 6th implementation form)
Then, the ship 1F according to the 6th implementation form of the invention is illustrated with reference to Fig. 6.According to the ship of the 6th implementation form
1F has：The structural unit of 4th implementation form, in addition being stored up with buffering to make the boil-off gas in buffer reservoir 91 escape
The pressure relief pipe 96 that tank 91 connects；With the relief valve 95 for being set to pressure relief pipe 96.
This implementation form can also obtain effect same as the 4th implementation form.Also, in this implementation form, pass through closing
First open and close valve 92 and the second open and close valve 93, and the relief valve 95 for being set to pressure relief pipe 96 is opened, buffer reservoir can be made
91 be low pressure, so effect same as the 5th implementation form can be obtained.In addition, each engine is not located in gas operating
When middle, by opening the first open and close valve 92 and the second open and close valve 93, and the relief valve 95 for being set to pressure relief pipe 96, energy are opened
It is enough to depressurize 3 entirety of gas feed line.In addition, this implementation form is not necessarily to that buffer reservoir is arranged on each engine, so
It is possible to realize the saving spatializations in ship.
(switching of oil operating and gas operating)
Above-mentioned the first~six implementation form carries out oil operating and gas fortune respectively for each of multiple DFD engines
When the switching turned, when certain engine be in gas operating, can make to press as low pressure to the supply gas of other engine or
Setting pressure is maintained, so particularly useful.Also, on the other hand certain engine, which continues gas operating, starts other engine
When gas operates, although gas flow rapidly changes, it can also be carried out at that time to the engine stabilizer for continuing gas operating
The supply of gaseous fuel.Below as an example, illustrate to be transported with gas according to the oil operating of the ship 1F of the 6th implementation form
The switching method turned.
According in the 6th implementation form ship 1F, the first engine 51a of consideration is in gas operating, and the second engine
51b is in the case where oil operating.The engine output of first engine 51a is 80%, it is desirable that is pressed as 28MPa.By gasifier
The pressure of the boil-off gas of 42 gasifications is 29MPa, and the first pressure by adjusting the first bifurcated road 32 adjusts valve 61a, to first
The supply gas pressure of engine 51a is maintained at 28MPa.On the other hand, the second engine 51b is in oil and operates, so with fully closed
The second pressure on the second bifurcated road 33 adjusts valve 61b, and closes the first open and close valve 92 and 2 open and close valves 93, and opens relief valve
95 state, make in the second bifurcated road 33 than second pressure adjustment valve 61b close to the downstream side part 332 in downstream gas pressure,
Buffer reservoir 91 keeps low pressure.
It is certain by being maintained to the supply gas pressure of the second engine 51b during second engine 51b is in oil operating
High pressure（Such as setting pressure 24MPa）Standby mode, can shorten the second engine 51b from oil run to gas operate cut
The time is changed, so being suitable.In order to make the second engine 51b in oil operating be standby mode, relief valve 95 is closed simultaneously
Open open and close valve 93, in addition, in order to make to gas operate in the supply gas pressure of the first engine 51a do not change drastically and make the
The second pressure adjustment valve 61b on bifurcated road 33 is slightly opened.Thus, make to adjust than second pressure in the second bifurcated road 33
Gases of the valve 61b close to the downstream side part 332 in downstream, which is pressed, to be risen, such as fully closed second pressure when close setting pressure 24MPa
Adjust valve 61b.Whereby, it is the standby mode of gas operating that can make the second engine 51b in oil operating, can shorten the
Engine with two 51b runs to the switching time that gas operates from oil.
Even if fully closed second pressure can adjust valve 61b in second pressure secondary side if adjusting valve 61b micro gases be let out
Dew when slowly rising to the supply gas pressure of the second engine 51b, adjusts the aperture of relief valve 95, can will start to second
The supply gas pressure of machine 51b maintains the setting pressure of standby mode（Such as setting pressure 24MPa）.
By the standby mode operated in gas（And in oil operating）Second engine 51b switches to gas operating
When, by the second switching valve 63b of opening, the gas of the upstream side of buffer reservoir 91 and the second switching valve 63b flows into second and cuts
Change the accumulator 64b in the downstream side of valve 63b.Whereby, valve 61b is adjusted under downstream than second pressure in the second bifurcated road 33
The gas pressure drop for swimming side section 332 is low, but the gas of setting pressure is risen to by being maintained in buffer reservoir 91, can prevent
The reduction of pressure drastically when opening the second switching valve 63b.
On the other hand, control the rotation number of high-pressure pump 41, the aperture of flow control valve 43, first pressure adjustment valve 61a with
And second pressure adjusts valve 61b, so that than first pressure adjustment valve 61a close to the downstream side part in downstream in the first bifurcated road 32
322 gas pressure will not drastically reduce and exceed allowable range, and be adjusted to the requirement pressure of the second engine 51b（Such as
25MPa）.Whereby, the second engine 51b can be switched to gas operating from oil operating.Also, the first engine 51a can be made
The operating of promoting the circulation of qi body is pressed into different supply gas from the second engine 51b.Also, starting the gas operating of the second engine 51b
When, it adjusts valve 61a by adjusting first pressure and second pressure adjusts valve 61b, the first hair in capable of being operated to gas
The variation control of the supply gas pressure of motivation 51a within the allowable range, while making in the supply gas pressure of the second engine 51b
It rises.Whereby, the gas supply of from the first engine 51a to gas operating can be made steadily to continue, start simultaneously at the second hair
The gas of motivation 51b operates.
Also, in the gas operating of the second engine 51b, it, can by closing the second open and close valve 93 and opening relief valve 95
It is low pressure to make buffer reservoir 91, and copes with and generate the case where gas feed line abrupt pressure rises.It is opened also, opening second
Valve closing 93 simultaneously closes relief valve 95, and the pressure of buffer reservoir 91 can also be made to press phase with to the supply gas of the second engine 51b
Together, the pressure oscillation of the rising due to unexpected engine output can be reduced.
According to the ship 1F of the 6th implementation form about so operating the switching operated to gas from oil and be illustrated, but
It is above-mentioned the first~five implementation form can also carry out by carrying out control similar to the above.Also, for oil operating and gas
The above-mentioned control method of the switching of body operating, only as an example, such as is opened and closed the first open and close valve 92 and the second open and close valve
93 opportunity etc., without being defined in above-mentioned control method.
(other implementation forms)
The present invention is not limited to above-mentioned implementation forms, can carry out various changes without departing from the spirit and scope of the invention
Shape.
For example, according to the gas supply system of the ship of above-mentioned implementation form, the liquid that will be supplied from storage tank 2 by high-pressure pump 41
Change gas boost, so that supply is pressed to the boil-off gas of the first engine 51a and the second engine 51b higher than requirement（Such as
15~30MPa）, but the increasing apparatus of the present invention is not limited to high-pressure pump 41.
For example, Fig. 7 shows the variation of the gas supply system 10A according to the ship of first embodiment.The gas of Fig. 7
Body feed system 10A ' includes：Store the storage tank 2 of liquid gas；By the gasifying liquefied gas in storage tank 2 to make to accumulate in storage
The compressor of the vaporized gas boosting on the top of tank 2（One example of the increasing apparatus of the present invention）46；With from compressor 46 to
The gas feed line 3 that engine 51a, 51b extend.Also, gas feed line 3 includes：The primary flow path being connect with compressor 46
31；Two bifurcated roads being connected to with primary flow path 31（First bifurcated road 32 and the second bifurcated road 33）.In addition, gas supply system
10A ' has：From the primary flow path 31 of gas feed line 3 the downstream side part bifurcated of compressor 46 and be attached to storage tank 2 return
Flow tube road 48；With the flow control valve 49 and reliquefaction installation 47 for being set to return line 48.By the vaporized gas of the storage tank 2
It boosts by compressor 46, so that the boil-off gas of supply to engine is pressed higher than requirement.By adjusting flow control valve 49, energy
Enough parts by the boil-off gas to be boosted by compressor 46 are re-liquefied by reliquefaction installation 47, and return to storage tank 2.With in this way
The ship 1A ' of gas supply system 10A ' can also obtain effect same as first embodiment.Also, including compressor 46
Gas supply system 10A ' be equally applicable to the second~six implementation form.
In above-mentioned implementation form, engine 51a, 51b are formed as the structure of diffusion combustion gas when gas operating, but unlimited
Due to this.Be formed as the structure that burning gases are pre-mixed when gas operating for example, it can be engine 51a, 51b.Start
When machine 51a, 51b are formed as the structure for being pre-mixed burning, can be engine 51a, 51b requirement pressure be low pressure, can also
It is to use easy device as the increasing apparatus for requiring pressure is boosted to.
Also, in above-mentioned implementation form, as equipped with the multiple diesel engines for driving the main shaft for being provided with propeller
One of ship has illustrated the ship of two-shipper twin axle, but is not limited only to the ship of the present invention.The ship of the present invention can be with
It is the ship of such as ship of three machine triple axles, four machine four-axle types, can also be two machines, one shaft type, four machines using geared system
Two-axis ship.
The explanation of above-mentioned third implementation form is also applied for the ship for having the engine of three machines or more.At this point, above-mentioned
" the first bifurcated road " means any one bifurcated road in a plurality of bifurcated road, and " the second bifurcated road " means a plurality of bifurcated
Any one bifurcated roads different from the first bifurcated road in road.For example, gas feed line includes three machines on three bifurcated roads
The case where ship of triple axle, ship of the invention are provided with double between two bifurcated roads more than only in three bifurcated roads
To the ship of intake line, and it is included in three bifurcated roads and is both provided with two-way feed pipeline between arbitrary two bifurcated roads
Ship.
The explanation of above-mentioned 4th implementation form and the 6th implementation form is also applied for the engine for having three machines or more
Ship.At this point, above-mentioned " the first bifurcated road " means any one bifurcated road in a plurality of bifurcated road, the meaning on " the second bifurcated road "
Think of is any one different bifurcated road of a plurality of the first bifurcateds of bifurcated Lu Zhongyu road.For example, gas feed line includes three points
The case where ship of three machine triple axles of the cross road, ship of the invention are more than including two bifurcateds only in three bifurcated roads
It is provided with the ship of two-way feed pipeline between road, and is included between arbitrary two bifurcated roads in three bifurcated roads and all sets
It is equipped with the ship of two-way feed pipeline, in addition, ship of the invention includes：Such as three bifurcated roads are respectively arranged with and extend to one
The two-way feed pipeline of a common buffer reservoir, and the ship of open and close valve is provided on each two-way feed pipeline.Also, can also
It is that buffer reservoir is not had according to the ship of the first~tri- implementation form.
In addition, the structure of Fig. 2~Fig. 6 can be appropriately combined, for example, it can be by bypass flow path 34a, 34b shown in Fig. 2
And pressure-regulating valve 62a, 62b are additional to the structure of Fig. 3~Fig. 6.
Industrial applicability：
The present invention can be suitable for the diesel engine using gas as fuel as propulsion host, and carry more
Host, and it is provided with by each host driven the ship of the multimachine multiaxial type of the main shaft of propeller.
Symbol description：
1A~1F ships；
10A~10F gas supply systems；
2 storage tanks；
3 gas feed lines；
31 primary flow paths；
32,33 bifurcated road；
34a, 34b bypass flow path；
41 high-pressure pumps（Increasing apparatus）；
42 gasifiers；
43 flow control valves；
44 return lines；
51a, 51b engine；
52a, 52b main shaft；
53a, 53b propeller；
54a, 54b oil feeding pipe；
61a, 61b pressure-regulating valve；
62a, 62b pressure-regulating valve；
71a, 71b buffer reservoir；
73a, 73b open and close valve；
74a, 74b relief valve；
75a, 75b pressure relief pipe；
81 cross feed valves；
82 two-way feed pipelines；
91 buffer reservoirs；
92,93 open and close valve；
94 two-way feed pipelines；
95 relief valves；
96 pressure relief pipes.
Claims (9)
1. a kind of ship, which is characterized in that have：
Store the storage tank of liquid gas；
Boil-off gas after the gasifying liquefied gas is used as fuel and drives the multiple of the main shaft for being provided with propeller
Diesel engine；
As the liquid gas boosting that will be supplied from the storage tank, so that the boil-off gas of supply to the diesel engine is higher than
The increasing apparatus of the pump of highest demand pressure in the requirement pressure of the multiple diesel engine；
Extend from the increasing apparatus to the multiple diesel engine and include the primary flow path that is connect with the increasing apparatus with
And the feeding pipe on a plurality of bifurcated road being connect with the multiple diesel engine；
It is set in the primary flow path, makes the gasifier of the gasifying liquefied gas sprayed from the pump；
It is set to the pressure-regulating valve of each a plurality of bifurcated road；
The control device of the pressure-regulating valve is controlled according to the pressure required by each the multiple diesel engine；
The part bifurcated between the gasifier is pumped described in the primary flow path and is attached to the return line of the storage tank；
With
It is set to the flow control valve of the return line,
The control device controls the pump and the flow control according to the pressure required by each the multiple diesel engine
Valve processed.
2. ship according to claim 1, which is characterized in that
The diesel engine is binary fuel diesel engine, can only operated the oil that oil is used as fuel and only by gas
Body will switch between gas operating that oil and both gas are used as fuel, and diffusion combustion oil when oil operating, gas operates
When diffusion combustion gas.
3. ship according to claim 1, which is characterized in that
The diesel engine is binary fuel diesel engine, can only operated the oil that oil is used as fuel and only by gas
Body will switch between gas operating that oil and both gas are used as fuel, and diffusion combustion oil when oil operating, gas operates
When be pre-mixed burning gases.
4. ship according to claim 1, which is characterized in that
When the diesel engine is operated with gaseous fuel, it is desirable that change at all according to the output power of the diesel engine.
5. a kind of ship, which is characterized in that
Have：
Store the storage tank of liquid gas；
Boil-off gas after the gasifying liquefied gas is used as fuel and drives the multiple of the main shaft for being provided with propeller
Diesel engine；
The liquid gas or boil-off gas that are supplied from the storage tank are boosted, so that boil-off gas of the supply to the diesel engine
Increasing apparatus of the body higher than highest demand pressure in the requirement pressure of the multiple diesel engine；
Extend from the increasing apparatus to the multiple diesel engine and include the primary flow path that is connect with the increasing apparatus with
And the feeding pipe on a plurality of bifurcated road being connect with the multiple diesel engine；
It is set to the pressure-regulating valve of each a plurality of bifurcated road；
It is connected to the primary side of the pressure-regulating valve and the bypass flow path of secondary side；With
It is set to the pressure-regulating valve or open and close valve of the bypass flow path.
6. a kind of ship, which is characterized in that
Have：
Store the storage tank of liquid gas；
Boil-off gas after the gasifying liquefied gas is used as fuel and drives the multiple of the main shaft for being provided with propeller
Diesel engine；
The liquid gas or boil-off gas that are supplied from the storage tank are boosted, so that boil-off gas of the supply to the diesel engine
Increasing apparatus of the body higher than highest demand pressure in the requirement pressure of the multiple diesel engine；
Extend from the increasing apparatus to the multiple diesel engine and include the primary flow path that is connect with the increasing apparatus with
And the feeding pipe on a plurality of bifurcated road being connect with the multiple diesel engine；
It is set to the pressure-regulating valve of each a plurality of bifurcated road；
In multiple buffer reservoirs that the downstream side of the pressure-regulating valve and a plurality of bifurcated road are respectively communicated with；
It is set to the company of the downstream side part and each the multiple buffer reservoir of the pressure-regulating valve in each a plurality of bifurcated road
The open and close valve of logical part；
The pressure relief pipe being connect with each the multiple buffer reservoir；With
It is set to the relief valve of the pressure relief pipe.
7. a kind of ship, which is characterized in that
Have：
Store the storage tank of liquid gas；
Boil-off gas after the gasifying liquefied gas is used as fuel and drives the multiple of the main shaft for being provided with propeller
Diesel engine；
The liquid gas or boil-off gas that are supplied from the storage tank are boosted, so that boil-off gas of the supply to the diesel engine
Increasing apparatus of the body higher than highest demand pressure in the requirement pressure of the multiple diesel engine；
Extend from the increasing apparatus to the multiple diesel engine and include the primary flow path that is connect with the increasing apparatus with
And the feeding pipe on a plurality of bifurcated road being connect with the multiple diesel engine；
It is set to the pressure-regulating valve of each a plurality of bifurcated road；
Two-way feed pipeline, in a plurality of bifurcated road described in the two-way feed pipeline connection in the first bifurcated road under pressure-regulating valve
Swim the downstream of pressure-regulating valve in side section the second bifurcated road different with the first bifurcated road described in a plurality of bifurcated Lu Zhongyu
Side section；With
It is set to the cross feed valve of the two-way feed pipeline.
8. a kind of ship, which is characterized in that
Have：
Store the storage tank of liquid gas；
Boil-off gas after the gasifying liquefied gas is used as fuel and drives the multiple of the main shaft for being provided with propeller
Diesel engine；
The liquid gas or boil-off gas that are supplied from the storage tank are boosted, so that boil-off gas of the supply to the diesel engine
Increasing apparatus of the body higher than highest demand pressure in the requirement pressure of the multiple diesel engine；
Extend from the increasing apparatus to the multiple diesel engine and include the primary flow path that is connect with the increasing apparatus with
And the feeding pipe on a plurality of bifurcated road being connect with the multiple diesel engine；
It is set to the pressure-regulating valve of each a plurality of bifurcated road；
Two-way feed pipeline, in a plurality of bifurcated road described in the two-way feed pipeline connection in the first bifurcated road under pressure-regulating valve
Swim the downstream of pressure-regulating valve in side section the second bifurcated road different with the first bifurcated road described in a plurality of bifurcated Lu Zhongyu
Side section；
It is set to the buffer reservoir of the two-way feed pipeline；
It is set to the first opening and closing of the part between buffer reservoir and first bifurcated road described in the two-way feed pipeline
Valve；With
It is set to the second opening and closing of the part between buffer reservoir and second bifurcated road described in the two-way feed pipeline
Valve.
9. ship according to claim 8, which is characterized in that
It is also equipped with：
The pressure relief pipe being connect with the buffer reservoir of the two-way feed pipeline；With
It is set to the relief valve of the pressure relief pipe.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-176350 | 2014-08-29 | ||
| JP2014176350A JP2016049881A (en) | 2014-08-29 | 2014-08-29 | Ship |
| PCT/JP2015/004201 WO2016031211A1 (en) | 2014-08-29 | 2015-08-21 | Ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106458310A CN106458310A (en) | 2017-02-22 |
| CN106458310B true CN106458310B (en) | 2018-08-28 |
Family
ID=55399127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580025565.8A Expired - Fee Related CN106458310B (en) | 2014-08-29 | 2015-08-21 | Ship |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2016049881A (en) |
| KR (1) | KR20170015512A (en) |
| CN (1) | CN106458310B (en) |
| WO (1) | WO2016031211A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6648374B2 (en) * | 2016-10-26 | 2020-02-14 | 株式会社三井Ｅ＆Ｓマシナリー | Fuel gas supply system, ship, and fuel gas supply method |
| JP6668566B2 (en) * | 2017-03-31 | 2020-03-18 | 株式会社三井Ｅ＆Ｓマシナリー | Fuel gas supply system, ship, and fuel gas supply method |
| JP6982439B2 (en) * | 2017-09-08 | 2021-12-17 | 川崎重工業株式会社 | Ship |
| DE102017215886A1 (en) * | 2017-09-08 | 2019-03-14 | Man Diesel & Turbo Se | More engine plant |
| DE102018216176A1 (en) * | 2018-09-21 | 2020-03-26 | Robert Bosch Gmbh | Fuel delivery device for an internal combustion engine |
| DE102018216175A1 (en) * | 2018-09-21 | 2020-03-26 | Robert Bosch Gmbh | Fuel delivery device for an internal combustion engine |
| JP7464478B2 (en) | 2020-08-24 | 2024-04-09 | 三菱造船株式会社 | Tank systems, ships |
| CN114576044A (en) * | 2021-11-18 | 2022-06-03 | 上海江南长兴造船有限责任公司 | Gas supply system of dual-fuel generator and ship comprising same |
| CN115303432A (en) * | 2022-10-09 | 2022-11-08 | 中国海洋大学 | Offshore exploration platform |
| CN116557776B (en) * | 2023-07-10 | 2023-09-26 | 亿昇(天津)科技有限公司 | Magnetic suspension centrifugal air compressor system and control method |
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| CN203162531U (en) * | 2013-01-23 | 2013-08-28 | 国鸿液化气机械工程（大连）有限公司 | High-pressure gas supply system of marine power plant |
| CN103562536A (en) * | 2011-03-22 | 2014-02-05 | 大宇造船海洋株式会社 | Method and system for supplying fuel to high-pressure natural gas injection engine |
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| JPS59137345U (en) * | 1983-03-03 | 1984-09-13 | 株式会社クボタ | gas engine |
| JP3806356B2 (en) * | 2002-02-05 | 2006-08-09 | 三菱重工業株式会社 | Liquefied natural gas processing equipment and liquefied natural gas carrier |
| JP2005083341A (en) * | 2003-09-11 | 2005-03-31 | Sumitomo Metal Ind Ltd | Method for fuel gas supply and its device |
| JP4570130B2 (en) * | 2004-04-23 | 2010-10-27 | 岩谷産業株式会社 | Equipment-linked low temperature liquefied gas supply equipment |
| JP5167158B2 (en) * | 2009-01-29 | 2013-03-21 | 三菱重工業株式会社 | Liquefied fuel carrier and its propulsion system |
| JP5611476B2 (en) * | 2011-03-11 | 2014-10-22 | デウ シップビルディング アンド マリーン エンジニアリング カンパニー リミテッド | Offshore structure fuel supply system with reliquefaction device and high pressure natural gas injection engine |
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| KR20140001569A (en) * | 2012-06-27 | 2014-01-07 | 삼성중공업 주식회사 | Ship propelled by liquefied fuel gas |
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2014
- 2014-08-29 JP JP2014176350A patent/JP2016049881A/en active Pending
-
2015
- 2015-08-21 KR KR1020177001086A patent/KR20170015512A/en active Search and Examination
- 2015-08-21 CN CN201580025565.8A patent/CN106458310B/en not_active Expired - Fee Related
- 2015-08-21 WO PCT/JP2015/004201 patent/WO2016031211A1/en active Application Filing
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|---|---|---|---|---|
| CN201013456Y (en) * | 2007-03-15 | 2008-01-30 | 李勇 | Diesel oil-LNG electrically controlled dual-fuel engine system |
| CN103562536A (en) * | 2011-03-22 | 2014-02-05 | 大宇造船海洋株式会社 | Method and system for supplying fuel to high-pressure natural gas injection engine |
| CN203162531U (en) * | 2013-01-23 | 2013-08-28 | 国鸿液化气机械工程（大连）有限公司 | High-pressure gas supply system of marine power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170015512A (en) | 2017-02-08 |
| WO2016031211A1 (en) | 2016-03-03 |
| CN106458310A (en) | 2017-02-22 |
| JP2016049881A (en) | 2016-04-11 |
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