FI124708B - Water Tank Liquefied Gas Fuel Tank - Google Patents

Water Tank Liquefied Gas Fuel Tank Download PDF

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Publication number
FI124708B
FI124708B FI20135438A FI20135438A FI124708B FI 124708 B FI124708 B FI 124708B FI 20135438 A FI20135438 A FI 20135438A FI 20135438 A FI20135438 A FI 20135438A FI 124708 B FI124708 B FI 124708B
Authority
FI
Finland
Prior art keywords
tank
gas
liquefied gas
fuel tank
arrangement
Prior art date
Application number
FI20135438A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20135438A (en
Inventor
Sören Karlsson
Mathias Jansson
Original Assignee
Wärtsilä Finland Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wärtsilä Finland Oy filed Critical Wärtsilä Finland Oy
Priority to FI20135438A priority Critical patent/FI124708B/en
Priority to PCT/FI2014/050305 priority patent/WO2014177761A1/en
Publication of FI20135438A publication Critical patent/FI20135438A/en
Application granted granted Critical
Publication of FI124708B publication Critical patent/FI124708B/en

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Classifications

    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/082—Mounting arrangements for vessels for large sea-borne storage vessels
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/126—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for large storage containers for liquefied gas
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0103—Exterior arrangements
    • F17C2205/0111—Boxes
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • F17C2205/0146—Two or more vessels characterised by the presence of fluid connection between vessels with details of the manifold
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0355—Insulation thereof
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/043—Localisation of the filling point in the gas
    • F17C2225/044—Localisation of the filling point in the gas at several points, e.g. with a device for recondensing gas
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • 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
    • F17C2227/0107—Propulsion of the fluid by pressurising the ullage
    • 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
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/037—Handling leaked fluid
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion
    • 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
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Description

Fuel tank arrangement for liquefied gas in a marine vessel Vesialuksen nesteytetyn kaasun polttoainetankki 5 Technical field
The invention relates to a fuel tank arrangement comprising a tank container for liquefied gas in a marine vessel, which is arranged to endure internal pressure above the atmospheric pressure and which is provided with heat insulation on outer surface of the container, and a communication junction for gas is arranged to communicate 10 with the inner space of the tank container according to a preamble of claim 1.
Background art
Gas is becoming more and more attractive fuel for ships' and other marine vessels’ prime movers and auxiliary engines. Particularly but not exclusively natural gas (NG) 15 is feasible due to its availability. Natural gas is a gaseous mixture in the ambient circumstances consisting primarily of methane and small amounts of ethane, propane, butane and nitrogen. It has high hydrogen content relative to coal, so when combusted it provides inter alia low amount of emissions, very clean burning process and it is basically free of contaminants. Particularly in cruise vessels, ferries and so 20 called ropax vessels, where passengers are on board, the absence of soot emis- sions and visible smoke in the exhaust gases of ship's engines is very important fea-° ture facilitated by using NG as fuel for the engines but also for vessels carrying o goods and bulk materials. Usually natural gas is stored as liquefied natural gas ^ (LNG) at temperature of about -162°C, thus the storage cause problems due to the jc 25 requirements to provide effective insulation. Additional problem is caused if the LNG is stored at high pressure, about at 5 bar, which is typically the level that a gas oper-St ated piston engine requires.
LO
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2
Large number of passengers in the vessel brings about an additional safety issue to the design of the storage tank, and thus the storage tank for liquefied gas must be manufactured under stringent conditions.
It is an object of the invention to provide a liquefied gas tank arranged to store gas at 5 pressure above the atmosphere in which the safety risks due leakage are minimized and.
Disclosure of the invention
Object of the invention are met substantially as is disclosed in independent claim. 10 The other claims present more details of different embodiments of the invention.
According to the invention a fuel tank arrangement comprises a tank container for liquefied gas in a marine vessel. The tank arrangement is arranged to endure internal pressure above the atmospheric pressure and which is provided with heat insulation on outer surface of the container, and the tank when containing liquefied gas in 15 use includes a liquefied gas space and an ullage space at the upper part of the tank container’s inner space. In the arrangement a communication junction is arranged to serve as a coupling means for gas lines of the arrangement, and the communication junction is connected to the tank container.
According to an embodiment of the invention the communication junction for gas is 20 arranged to communicate with the liquefied gas space of the tank container and the communication junction is arranged to serve as a coupling means for liquefied gas τί lines.
δ c\j ^ According to an embodiment of the invention the communication junction is arranged o to communicate with the gaseous gas space of the tank container, and that the ^ 25 communication junction is arranged to serve as a coupling means for gas linesin the
X
£ container.
00 co j^r According to an embodiment of the invention the fuel tank arrangement comprises a first communication junction for gaseous gas which is arranged to communicate with 00 the ullage space of the tank container and a second communication junction for liq- 30 uefied gas which is arranged to communicate with the liquefied gas pace of the tank 3 container. The first and the second communication junctions are arranged to serve as a coupling means for both liquefied and gaseous gas lines in the container.
According to an embodiment of the invention the communication junction is arranged to extend through the heat insulation of the tank container.
5 According to an embodiment of the invention the gaseous gas lines comprises at least two of the following: the vapour return line of the tank filling system, safety release valve line of the tank container and gaseous gas line from pressure build up system of the fuel tank arrangement.
According to an embodiment of the invention the liquefied gas lines comprises at 10 least two of the following: the liquefied gas feed line of the tank filling system and liquefied gas line leading to the evaporator of the pressure build up system of the fuel tank arrangement and a fuel conduit to the engine.
According to an embodiment of the invention each of the communication junctions is provided with a dedicated insulation.
15 According to an embodiment of the invention the fuel tank arrangement comprises a confined space which encloses partially the tank container and all of the one or more communication junctions of the arrangement.
The invention has several benefits over the prior art. Particularly the number of inlet and outlet connections of the tank container are minimized which increases the ma-20 terial failure at a joint to the tank.
Brief Description of Drawings 't δ ^ In the following the invention will be described with the reference to the accompany- co 0 ing schematic drawings, in which ^ Figure 1 illustrates an embodiment of the fuel tank arrangement according to the in- 1 25 vention,
CL
Figure 2 illustrates another embodiment of the fuel tank arrangement according to co "t the invention, and m
Figure 3 illustrates still another embodiment of the fuel tank arrangement according 00 to the invention.
30 4
Detailed Description of Drawings
Figure 1 describes an embodiment of the fuel tank arrangement 10 in a marine vessel 16 according to the invention. The fuel tank arrangement comprises a fuel tank container 12 which is in connection with at least one gas operated engine 14 of the 5 vessel 16, so that the engine may be operated making use of the gas stored in the fuel tank. The gas, particularly liquefied natural gas, is stored in the tank container 12 at considerably low temperature, typically at temperature of about -162eC which is described as cryogenic conditions. Typically the gas fills the tank so that a part of the gas is as liquefied gas at the bottom of the tank 12.1, at liquefied gas space, and 10 part as gaseous gas at the upper part 12.2 i.e. ullage space of the tank above the liquefied gas space. The tank arrangement 10 comprises insulation 13 covering the actual tank container 12 to prevent excessive heat transfer into the tank and warming up of the LNG in the tank container.
15 In this exemplary embodiment the tank is connected via a fuel conduit 18 with the engine 14. The fuel conduit is provided with an evaporator 20 by means of which liquefied gas may be evaporated as it is consumed prior to feeding to the engine, according to the demand. This evaporator is called a main evaporator because during the operation of the engine the gas combusted in the engine is evaporated con-20 tinuously from the liquefied gas in the tank 12. The tank 12 is also provided with a pressure build up system 22 by means of which the pressure in the tank 12 may be maintained at a level which makes it possible to deliver fuel to the engine at required feed pressure even without mechanical pumping. The pressure build up system 22 comprises a conduit 23 leading from the bottom section of the tank to the upper sec-^ 25 tion of the tank 12 and an evaporator 25 arranged to the conduit. During the opera- o tion of the pressure build up system the liquefied gas is turning into gaseous form in co the evaporator and is led to the upper part of the tank. The evaporation process in- creases the pressure in the tank. Pressure is detected by a sensor 56 which is in x connection with a control unit 54. There is a valve 50 arranged to the conduit 23 by
CC
30 means of which the flow rate of the gas in the conduit may be controlled. The opera-eo tion of the valve is controlled by the control unit 54 arranged to control the fuel sys- P3 tern 10.
δ
CM
5
The tank container 12 is provided with a safety release valve 29 in a safety release valve line 28. The safety release valve line 28 is a gaseous gas line in connection with the ullage space of the container. The safety release valve 29 is arranged to open at a predetermined maximum pressure of the system as a precautionary 5 measure and lead excessive gas out of the container to be handled in appropriate manner.
Since the engine consumes the gas the tank it must be filled occasionally with liquefied gas. In order to fill the tank, which is called also as bunkering, the tank arrange-10 ment 12 is provided with a filling system 24. The filling system comprises a liquefied gas feed line 26 for bunkering operation. The feed line has at least two branches, the first one of which extends to the tank 12 and has its outlet 34 at vicinity of the bottom of the tank. Thus first branch 32 of the feed line opens below the surface of the liquefied gas in the tank 12. The second branch 36, a spaying branch, extends to 15 the tank 12 as well, but is has its outlet 38 at the vicinity of the top of the tank open ing into the space of gaseous gas. The outlet 38 comprises a plurality of spray nozzles which makes the liquefied gas atomizing into small when it is introduced into the tank through the nozzles. The filling system 24 comprises also a vapour return line 27 connected to the top of the tank container opening into the ullage space 12.2.
20
When the tank is filled an external source (not shown) of liquefied gas is connected to the filling system any preparatory actions are performed. During the filling the tank container with liquefied gas it displaces the gas or vapour in the ullage space. In order to prevent excessive pressure increase the vapour is removed via the vapour 25 return line 27 which may be connected back to the external fuel source or other sys- ^ tern to safely process the gas. The fuel tank arrangement 12 comprises a communi- o cm cation junction (40) for gaseous gas which is arranged to communicate with the ul- o lage space 12.2. The communication junction is arranged to extend through the heat insulation 13 of the tank container 12. The communication junction is arranged to 30 serve as a coupling means for the gaseous gas lines 27, 28. Advantageously the
CL
first communication junction 40 for gaseous gas is arranged to communicate with
CO
tank space at a location 2/3 of its vertical dimension. As is shown in figure 1 there ” are at least two gaseous gas lines connected to the communication junction, o
CM
6
The communication junction is also provided with a dedicated insulation 42. The dedicated insulation is removable independently from the insulation of the tank container. Thus, in case any changes are made to the communications of gas lines to the communication junction, only the insulation of the communication junction is af-5 fected. The communication junction having a dedicated insulation makes possible to minimize the risks of heat losses at the actual tank vessel joints as well as decrease risk of leakage at such joints. Particularly the be means of the invention it is possible to minimize the number of pipe joints to the tank container.
10 Figure 2 describes another embodiment of the fuel tank arrangement 10 in a marine vessel 16 according to the invention. Also in this case the fuel tank arrangement comprises a fuel tank container 12 which is in connection with at least one gas operated engine 14 of the vessel 16, so that the engine may be operated making use of the gas stored in the fuel tank. The gas is stored in the tank container 12 at consid-15 erably low temperature, typically at temperature of about -162eC. Typically the gas fills the tank so that a part of the gas is as liquefied gas at the bottom of the tank 12.1, at liquefied gas space, and part as gaseous gas at the upper part 12.2 i.e. ullage space of the tank above the liquefied gas space. The tank arrangement 10 comprises insulation 13 covering the actual tank container 12 to prevent excessive 20 heat transfer into the tank and warming up of the LNG in the tank container.
In this embodiment the tank is connected via a fuel conduit 18 with the engine 14.
The fuel conduit is provided with an evaporator 20 by means of which liquefied gas may be evaporated as it is consumed prior to feeding to the engine, according to the 25 demand. This evaporator is called a main evaporator because during the operation ^ of the engine the gas combusted in the engine is evaporated continuously from the o liquefied gas in the tank 12. The tank 12 is also provided with a pressure build up o system 22 by means of which the pressure in the tank 12 may be maintained at a level which makes it possible to deliver fuel to the engine at required feed pressure ^ 30 even without mechanical pumping. The pressure build up system 22 comprises a
CL
conduit 23 leading from the bottom section of the tank to the upper section of the St tank 12 and an evaporator 25 arranged to the conduit. During the operation of the t? pressure build up system the liquefied gas is turning into gaseous form in the evapo- ^ rator and is led to the upper part of the tank. The evaporation process increases the 35 pressure in the tank. Pressure is detected by a sensor 56 which is in connection with 7 a control unit 54. There is a valve 50 arranged to the conduit 23 by means of which the flow rate of the gas in the conduit may be controlled. The operation of the valve is controlled by the control unit 54 arranged to control the fuel system 10.
5 The tank container 12 is provided with a safety release valve 29 in a safety release valve line 28. The safety release valve line 28 is a gaseous gas line in connection with the ullage space of the container. The safety release valve 29 is arranged to open at a predetermined maximum pressure of the system as a precautionary measure and lead excessive gas out of the container to be handled in appropriate 10 manner.
Since the engine consumes the gas the tank it must be filled occasionally with liquefied gas. In order to fill the tank, which is called also as bunkering, the tank arrangement 12 is provided with a filling system 24. The filling system comprises a liquefied 15 gas feed line 26 for bunkering operation. The feed line has at least two branches, the first one of which extends to the tank 12 and has its outlet 34 at vicinity of the bottom of the tank. Thus first branch 32 of the feed line opens below the surface of the liquefied gas in the tank 12. The second branch 36, the spraying brance, extends to the tank 12 as well, but is has its outlet 38 at the vicinity of the top of the tank 20 opening into the space of gaseous gas. The outlet 38 comprises a plurality of spray nozzles which makes the liquefied gas atomizing into small when it is introduced into the tank through the nozzles. The filling system 24 comprises also a vapour return line 27 connected to the top of the tank container opening into the ullage space 12.2.
25 When the tank is filled an external source (not shown) of liquefied gas is connected ^ to the filling system any preparatory actions are performed. During the filling the tank o ^ container with liquefied gas it displaces the gas or vapour in the ullage space. In or- o der to prevent excessive pressure increase the vapour is removed via the vapour return line 27 which may be connected back to the external fuel source or other sysii 30 tern to safely process the gas.
0_ 00 00
The fuel tank arrangement 12 comprises a first communication junction 40 for gases' ous gas which is arranged to communicate with the ullage space 12.2 and a second 00 communication junction 41 for liquefied gas which is arranged to communicate with 35 the liquefied gas space of the tank container. Advantageously the first communica- 8 tion junction 40 for gaseous gas is arranged to communicate with tank space at a location 2/3 of its vertical dimension and the second communication junction 41 for liquefied gas is arranged to communicate with tank space at a location 1/3 of its vertical dimension. The communication junction is arranged to extend through the heat 5 insulation 13 of the tank container 12. The communication junction is arranged to serve as a coupling means for the gaseous gas lines 27, 28.
The communication junctions are also provided with a dedicated insulation 42, 44. The dedicated insulation is removable independently from the insulation 40 of the 10 tank container. Thus, in case any changes are made to the communications of gas lines to the communication junctions, only the insulation of the communication junction is affected. The communication junction having a dedicated insulation makes possible to minimize the risks of heat losses at the actual tank vessel joints as well as decrease risk of leakage at such joints. Particularly the be means of the invention 15 it is possible to minimize the number of pipe joints to the tank container.
In the embodiment of figure 2 the gaseous gas lines which are coupled to the first communication junction 40 are the vapour return line of the tank filling system 27 , safety release valve line 28 of the tank container 12 and gaseous gas line 23 from downstream the evaporator 25 of the pressure build up system 22 of the fuel tank 20 arrangement. Respectively liquefied gas lines which are coupled to the second communication junction 41 are the liquefied gas feed line 26 of the tank filling system 24 and liquefied gas line 23 leading to the evaporator 25 of the pressure build up system 22 of the fuel tank arrangement 12.
According to the embodiment of the figure 2 all liquefied and gaseous gas lines, ex-^ 25 cept the spraying branch 36 are arranged to communication with the inner space of ^ the tank container 12 through the communication junction 40, 41. It is noted that in 9 this context instrumentation, such as pressure or temperature probes are not con- sidered as gas lines.
X
X
Q.
Figure 3 describes another embodiment of the fuel tank arrangement 10 in a marine ” 30 vessel 16 according to the invention. It is in all other respect identical to that shown n £2 in figure 2 except in the embodiment of figure 3 the fuel tank arrangement comprises o ^ a confined space 70 which encloses partially the tank container 12. In practise the tank container is an elongated device and the space 70 is advantageously arranged 9 at one end of the tank container. In the figure 3 the part of the tank container outside the space is exaggeratedly small. The tank container may extend outside the space 70 over a desired distance depending on the form and size of the tank as is depicted by the cut portion of the tank in the figure. The confined space may be called as a 5 tank room because many of the major control devices relating the operation of the fuel system are arranged in the tank room. As can be seen in the figure 3 also all of the one or more communication junctions 40,41 of the arrangement 10. The confined space is substantially gas tight so that any leakage may be easily detected without risk of effects over larger area. The space 70 is also liquid tight so that is al-10 so acts as a secondary barrier for any liquid LNG leakages. Also the evaporator 25, the pressure build up system 22 and the main evaporator 20 are arranged in the space 70.
It is to be noted that only a few most advantageous embodiments of the invention 15 have been described in the above. Thus, it is clear that the invention is not limited to the above-described embodiments, but may be applied in many ways within the scope of the appended claims. The features disclosed in connection with various embodiments can also be used in connection with other embodiments within the inventive scope and/or different assemblies can be combined from the disclosed fea-20 tures, should it be desired and should it be technically feasible.
't δ
CM
CD
O
X
IX
CL
CO
CO
LO
CO
δ
CVJ

Claims (9)

1. Vesialuksen (16) polttoainetankkijärjestely (10), joka käsittää nesteytetyn kaasun tankkisäiliön (12), joka on järjestetty kestämään ilmakehän painetta korkeampi paine ja joka on varustettu säiliön ulkopinnalla olevalla lämmöneristeellä, ja 5 käytön aikana nesteytettyä kaasua sisältävä tankki sisältää käytön aikana nesteytetyn kaasun tilan ja jäännöstilan, ja jossa järjestelyssä kaasulle tarkoitettu liittymä on järjestetty olemaan yhteydessä tankkisäiliön sisätilan kanssa, tunnettu siitä, että liittymä (40, 41) on järjestetty toimimaan järjestelyn kaasukanavien (27, 28) kytken-tävälineenä ja että liittymä on liitetty tankkisäiliöön. 10A fuel tank arrangement (10) for a water craft (16), comprising a liquefied gas tank tank (12) arranged to withstand atmospheric pressure and provided with a heat insulator on the outside of the tank, and the tank containing the liquefied gas during operation contains liquefied gas. space and residual space, and wherein the gas interface is arranged to communicate with the interior of the tank, characterized in that the interface (40, 41) is configured to act as a coupling means for the gas channels (27, 28) of the arrangement; 10 2. Patenttivaatimuksen 1 mukainen polttoainetankkijärjestely (10), tunnettu siitä, että kaasulle tarkoitettu liittymä on järjestetty olemaan yhteydessä tankkisäiliön nesteytetyn kaasun tilaan ja että liittymä on järjestetty toimimaan nesteytetylle kaasulle tarkoitettujen putkien (18, 34, 23) kytkentävälineenä. 15A fuel tank arrangement (10) according to claim 1, characterized in that the gas connection is arranged to be in communication with the liquefied gas state of the tank and that the connection is arranged to act as a connecting means for the pipes (18, 34, 23) for liquefied gas. 15 3. Patenttivaatimuksen 1 mukainen polttoainetankkijärjestely (10), tunnettu siitä, että liittymä on järjestetty olemaan yhteydessä tankkisäiliön kaasumaisen kaasun tilaan ja että liittymä on järjestetty toimimaan säiliössä olevien kaasukanavien (26, 18) kytkentävälineenä. 20Fuel tank arrangement (10) according to claim 1, characterized in that the connection is arranged to be in communication with the gaseous gas state of the tank and that the connection is arranged to act as a means for connecting the gas channels (26, 18) in the tank. 20 4. Patenttivaatimuksen 1, 2 tai 3 mukainen polttoainetankkijärjestely (10), tunnettu siitä, että liittymä on järjestetty ulottumaan tankkisäiliön lämmöneristeen läpi.Fuel tank arrangement (10) according to Claim 1, 2 or 3, characterized in that the connection is arranged to extend through the thermal insulation of the tank. 5. Patenttivaatimusten 2 ja 3 mukainen polttoainetankkijärjestely. δ 25 (M cöThe fuel tank arrangement according to claims 2 and 3. δ 25 (M c 6 6. Patenttivaatimuksen 3 mukainen polttoainetankkijärjestely, tunnettu siitä, o ^ että kaasumaiselle kaasulle tarkoitetut kanavat käsittävät vähintään kaksi seuraavis- ta: tankintäyttöjärjestelmän höyrynpalautuskanavan, tankkisäiliön varoventtiilikana- CC van ja polttoainetankkijärjestelyn paineentuottojärjestelmästä lähtevän kaasumaisel-co 30 le kaasulle tarkoitetun kanavan. LO coA fuel tank arrangement according to claim 3, characterized in that the channels for the gaseous gas comprise at least two of the following: a vapor recovery duct for the refueling system, a safety valve duct for the tank tank and a gaseous channel 30 for the gas. LO co 7. Patenttivaatimuksen 2 mukainen polttoainetankkijärjestely, tunnettu siitä, C\J että nesteytetylle kaasulle tarkoitetut kanavat käsittävät vähintään kaksi seuraavista: tankintäyttöjärjestelmän nesteytetyn kaasun syöttöputken (26) ja polttoainetankkijär- jestelyn paineentuottojärjestelmän (22) haihduttimeen (25) johtavan nesteytetylle kaasulle tarkoitetun kanavan sekä moottoriin johtavan polttoainekanavan (18).The fuel tank arrangement according to claim 2, characterized in that the channels for the liquefied gas comprise at least two of the following: a liquefied gas supply line (26) for the tank filling system and a fluidized gas supply to the evaporator (25) for the pressure supply system (22). a fuel channel (18). 8. Jonkin edellä olevan patenttivaatimuksen mukainen polttoainetankkijärjeste-5 ly, tunnettu siitä, että kukin liittymistä on varustettu erityiseristeellä (42).Fuel tank arrangement according to one of the preceding claims, characterized in that each connection is provided with a special insulator (42). 9. Jonkin edellä olevan patenttivaatimuksen mukainen poittoainetankkijärjeste-ly, tunnettu siitä, että polttoainetankkijärjestely käsittää rajoitetun tilan (70), joka sulkee osittain sisäänsä tankkisäiliön (12) ja jokaisen järjestelyyn (10) kuuluvan yhden 10 tai useamman liittymän (40, 41). 't δ c\j CD O X CC CL CO CO LO CO δ C\lA fuel tank arrangement according to any one of the preceding claims, characterized in that the fuel tank arrangement comprises a limited space (70) which partially encloses the tank (12) and each one or more connections (40, 41) included in the arrangement (10). 't δ c \ j CD O X CC CL CO CO LO CO δ C \ l
FI20135438A 2013-04-29 2013-04-29 Water Tank Liquefied Gas Fuel Tank FI124708B (en)

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FI20135438A FI124708B (en) 2013-04-29 2013-04-29 Water Tank Liquefied Gas Fuel Tank
PCT/FI2014/050305 WO2014177761A1 (en) 2013-04-29 2014-04-28 Fuel tank arrangement for liquefied gas in a marine vessel

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KR102531802B1 (en) * 2018-09-11 2023-05-12 바르실라 핀랜드 오이 Fuel tank system for gas fueled ships
CN113324167B (en) * 2021-05-19 2022-12-23 上海汇舸环保科技有限公司 Ship LNG engine gas supply system
EP4219282A1 (en) * 2022-01-27 2023-08-02 HB Hunte Engineering GmbH Fuel gas supply system, in particular based on liquid gas, for a ship with at least one gas-operated consumer and ship with the same

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DE102006025654A1 (en) * 2006-06-01 2007-12-27 Bayerische Motoren Werke Ag Liquid hydrogen fuel tank for road vehicle with internal combustion engine, includes housing containing valvework, fuel pump and first heat exchanger
US8104296B2 (en) * 2007-03-02 2012-01-31 Westport Power Inc. Storage tank for a cryogenic fluid with a partitioned cryogen space
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