CN117588679A - Method for fitting a spray rod to a tank - Google Patents

Method for fitting a spray rod to a tank Download PDF

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Publication number
CN117588679A
CN117588679A CN202311037464.5A CN202311037464A CN117588679A CN 117588679 A CN117588679 A CN 117588679A CN 202311037464 A CN202311037464 A CN 202311037464A CN 117588679 A CN117588679 A CN 117588679A
Authority
CN
China
Prior art keywords
gas dome
gas
tank
attachment
support
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.)
Pending
Application number
CN202311037464.5A
Other languages
Chinese (zh)
Inventor
扬妮克·杜布瓦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gaztransport et Technigaz SA
Original Assignee
Gaztransport et Technigaz SA
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 Gaztransport et Technigaz SA filed Critical Gaztransport et Technigaz SA
Publication of CN117588679A publication Critical patent/CN117588679A/en
Pending legal-status Critical Current

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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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
    • 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 
    • 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
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • 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
    • 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
    • F17C13/04—Arrangement or mounting of 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • 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
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0325—Aerogel
    • 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
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0337—Granular
    • F17C2203/0341—Perlite
    • 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
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0345—Fibres
    • F17C2203/035—Glass wool
    • 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
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • 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
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/234—Manufacturing of particular parts or at special locations of closing end pieces, e.g. 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • 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
    • F17C2223/0107—Single phase
    • F17C2223/013—Single phase 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
    • 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
    • F17C2223/043—Localisation of the removal point in the 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
    • F17C2225/043—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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort
    • 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
    • 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
    • F17C2270/0107—Wall panels

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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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a method for fitting a gas dome device (13) in a tank, comprising the steps of: -providing a support structure (2), -providing a tank comprising a gas dome structure (12) fixed to the support structure (2) and passing through the gas discharge opening (10), -providing a gas dome device (13) comprising at least one spray lance (26), -placing the gas dome device (13) in the interior space (4) of the sealed and thermally insulated tank, -lifting the gas dome device (13) into the gas dome structure (12), -attaching the gas dome device (13) to the gas dome structure (12).

Description

Method for fitting a spray rod to a tank
Technical Field
The present invention relates to the field of sealed and thermally insulated cans with membranes. In particular, the present invention relates to the field of sealed, thermally insulated tanks for storing and/or transporting liquefied gases at low temperatures, such as tanks for transporting liquefied petroleum gas (also known as LPG) at temperatures between, for example, -50 ℃ and 0 ℃, or tanks for transporting Liquefied Natural Gas (LNG) at about-162 ℃ at atmospheric pressure. These tanks may be mounted on land or on floating structures. In the case of a floating structure, the tanks may be used for transporting liquefied gas or for receiving liquefied gas that acts as fuel for propelling the floating structure.
Background
Document KR20140061726 discloses a sealed and thermally insulated tank housed within a supporting structure and comprising a gas dome structure for defining a channel for vapor communication between the internal space of the tank and a vapor manifold arranged outside the tank.
The gas dome structure comprises in particular a gas dome device having a larger dimension in height direction and in particular a tube for guiding some vapour from the inner space to the manifold, and a shaft fixed to the support structure.
During manufacture of the tank or during repair of the tank, the gas dome assembly must be assembled to the shaft of the gas dome structure or the gas dome assembly must be disassembled from the shaft. This operation is performed from outside the tank and, given the large size of the gas dome assembly, it is necessary to leave a large space of about several meters above the gas dome structure in order to insert the gas dome assembly into the shaft and fix it thereto. For example, the gas dome apparatus may have a spray boom.
In KR20140061726, to address this problem, the gas dome assembly is designed as a plurality of separable components to reduce the amount of free space required. However, this solution involves multiple assembly/disassembly steps and is difficult to implement.
Document KR20140088975 proposes another solution, namely to design a recess on the support structure, in which recess the gas dome structure is placed. This solution also reduces the amount of free space required above the gas dome structure, but requires a specially designed support structure and a more complex top wall structure to accommodate the recess.
Disclosure of Invention
The idea underlying the present invention is to design a gas dome device that can be adapted to the gas dome structure of a tank, whereby the amount of free space required above the gas dome structure can be reduced without complicating the method of fitting the gas dome device in the gas dome structure.
According to one embodiment, the present invention provides a method for fitting a gas dome device in a sealed and thermally insulated tank for storing liquefied gas, the method comprising the steps of:
-providing a support structure for the support structure,
providing a sealed and thermally insulated tank within the support structure, the sealed and thermally insulated tank having an interior space and comprising a top wall comprising at least one thermally insulated barrier, at least one sealing membrane resting on the thermally insulated barrier, and a gas discharge opening through the sealing membrane and the thermally insulated barrier, the sealed and thermally insulated tank comprising a gas dome structure secured to the support structure and through the gas discharge opening to discharge gas from the interior space of the tank,
providing a gas dome assembly comprising at least one spray lance,
placing the gas dome device in the inner space of a sealed and thermally insulated tank,
lifting the gas dome assembly into a gas dome structure,
-attaching a gas dome device to the gas dome structure.
According to one embodiment, the invention also provides a storage facility comprising a support structure and a sealed and thermally insulated tank placed in the support structure for storing liquefied gas, wherein the sealed and thermally insulated tank has an interior space and a top wall comprising at least one thermally insulated barrier, at least one sealing membrane resting on the thermally insulated barrier, and a gas discharge opening through the sealing membrane and the thermally insulated barrier, the sealed and thermally insulated tank comprising a gas dome structure secured to the support structure and through the gas discharge opening for discharging gas from the interior space of the tank,
wherein the storage facility comprises a gas dome apparatus having at least one spray boom, the gas dome apparatus configured to: is pre-placed in the interior space of a sealed and thermally insulated tank and then lifted into the gas dome structure so that the gas dome device is attached to the gas dome structure.
Because of these features, the gas dome assembly is not assembled onto the shaft from the top of the tank, but is placed in the interior space of the tank and then assembled to the shaft from the interior space of the tank. Thereby, the space above the gas dome structure is no longer used for placing the gas dome device in the gas dome structure, whereby large equipment can be installed therein and/or its size can be reduced. Furthermore, the assembly of the gas dome assembly is also simple and does not require changing the depth of the support structure or the sealed and thermally insulated tank in order to assemble the gas dome assembly to the gas dome structure.
According to some implementations, such a facility and such a method may include one or more of the following features.
According to one embodiment, the storage facility comprises at least one valve and at least one vapor manifold, and the gas dome structure comprises a vapor collection conduit having one end opening into the gas dome structure and the other end connected to the valve and the vapor manifold, the vapor collection conduit being configured to discharge gas in a gas phase present in the gas dome structure into the vapor manifold when a predetermined pressure is reached in the gas dome structure.
According to one embodiment, a gas dome apparatus includes a support tube, an attachment plate fixed to the support tube, and a spray bar fixed to the support tube, the spray bar including a spray tube and a spray nozzle fixed to the spray tube, the gas dome structure including a shaft and an attachment support circumferentially disposed on an inner surface of the shaft, the attachment plate being attached to the attachment support during the step of attaching the gas dome apparatus.
According to one embodiment, the support tube, attachment plate and spray bar are preassembled prior to placement of the support tube, attachment plate and spray bar into a sealed and thermally insulated tank.
According to one embodiment, the support tube comprises a lower end portion, which is open in the inner space of the tank after the gas dome device has been attached to the gas dome structure, and an upper end portion, which protrudes from the support structure in the height direction.
According to one embodiment, the support tube is configured to direct gas present in the interior space towards an upper portion of the gas dome structure.
According to one embodiment, one end of the support tube is open in the upper part of the gas dome structure.
According to one embodiment, the support tube has a dimension in the height direction of greater than or equal to 2m, for example about 4m.
According to one embodiment, the shaft has a cylindrical shape of circular cross section and the attachment plate has an annular shape, the attachment plate comprising tab portions protruding in a radial direction and arranged to surround the attachment plate, the tab portions being configured to interact with the attachment support in the closed position.
According to one embodiment, the gas dome device is orientable relative to the gas dome structure from an open position to a closed position and vice versa by rotation about an axis of rotation situated in a height direction, and in the closed position, each tab portion is aligned in the height direction with an attachment support of the gas dome structure, and in the open position, each tab portion is aligned with a free space formed between two attachment supports of the gas dome structure, and during the step of lifting the gas dome device, the gas dome device is oriented in the open position.
According to one embodiment, the rotation axis passes through the centre of the attachment plate.
According to one embodiment, the attaching step comprises the sub-steps of:
orienting the gas dome means in a closed position,
-attaching each tab portion to one of the attachment supports by means of an attachment device.
For example, the attachment means may comprise nuts and bolts.
According to one embodiment, after the step of lifting the gas dome device, the attachment plate is located above the attachment support in the height direction.
According to one embodiment, the tank comprises a loading/unloading opening and/or a temporary side opening in the support structure and spaced apart from the gas discharge opening, the gas dome device being placed in the inner space of the sealed thermally insulated tank by passing through the loading/unloading opening.
Thus, in the case of manufacturing a sealed, thermally insulated tank, the gas dome assembly is first inserted via the loading/unloading opening or via the temporary side opening to be placed in the interior space of the tank, without having to pass through the gas discharge opening. In particular, in general, the loading/unloading openings and/or temporary side openings in the support structure are larger than the gas discharge openings and are designed for the passage of large equipment.
According to one embodiment, the sealed and thermally insulated tank comprises at least one loading tube for loading the liquefied gas into the interior space and at least one unloading tube for unloading the liquefied gas from the interior space to the outside of the tank.
According to one embodiment, during the step of providing the tank, the tank comprises a gas dome device attached to a shaft of the gas dome structure, and the step of placing the spray lance in the interior space comprises the sub-steps of:
-removing the gas dome assembly from the gas dome structure, and
-lowering the gas dome means towards the inner space of the tank.
Thus, in case of a repair can, the gas dome assembly is lowered into the inner space and then still lifted up through the inner space again, so that it is not necessary to place the gas dome assembly above the gas discharge opening.
According to one embodiment, the attachment plate comprises at least three lugs and the shaft comprises at least three attachment supports, the number of attachment supports being greater than or equal to the number of lugs.
According to one embodiment, the attachment plate comprises N lugs, and the shaft comprises N attachment supports, N being a natural integer greater than or equal to 3, distributed in a regular manner around the shaft and spaced apart from each other with an angular spacing equal to 360 °/N, the lugs being distributed in a regular manner around the attachment plate and spaced apart from each other with an angular spacing equal to 360 °/N.
According to one embodiment, each attachment support comprises a rod protruding upwards in the height direction, and each lug part of the attachment plate comprises a hole, and each rod is inserted into the hole during the step of attaching the gas dome device.
According to one embodiment, each attachment support comprises two circumferential stops on both sides of the attachment support in a circumferential direction perpendicular to the radial direction, the circumferential stops of the attachment support being located on both sides of the lug portions on the attachment support and being configured to block rotation of the gas dome device about the rotation axis.
According to one embodiment, the dimension of each stopper in the height direction is larger than the dimension of the attachment plate in the height direction.
Such storage facilities may be onshore storage facilities, such as those used for storing LNG, or installed in floating, coastal or deepwater structures, particularly liquefied gas carriers, floating Storage and Regasification Units (FSRU), remote floating production storage units (FPSO), and the like. Such tanks may also be used as fuel tanks in any type of transportation means.
According to one embodiment, a vehicle for transporting a cold liquid product comprises a double hull and the above-described storage facility, the support structure of the sealed and thermally insulated tank being formed by a portion of the double hull.
According to one embodiment, the present invention also provides a transfer system for a chilled liquid product, the system comprising: the above-mentioned transport means; an insulated pipeline arranged such that a tank mounted in a hull of a vehicle is connected to a floating or onshore storage facility; and a pump for pumping the cold liquid product stream from the floating or onshore storage facility to the tank of the vehicle through the insulated pipeline or from the tank of the vehicle to the floating or onshore storage facility through the insulated pipeline.
According to one embodiment, the invention also provides a method for loading or unloading such a vehicle, wherein cold liquid product is transferred from a floating or onshore storage facility to a tank of the vehicle via an insulated pipeline or from the tank of the vehicle to the floating or onshore storage facility via an insulated pipeline.
Drawings
The invention will be better understood and other objects, details, features and advantages thereof will become more apparent from the following description of several specific embodiments thereof, given by way of non-limiting illustration only with reference to the accompanying drawings.
FIG. 1 is a partial schematic view of a storage facility according to one embodiment.
Fig. 2 is a view of detail II of fig. 1, particularly illustrating a gas dome structure and a gas dome device according to one embodiment.
Fig. 3 is a top view of an attachment plate of a gas dome device and an attachment support of a gas dome structure, the gas dome device being in an open position.
Fig. 4 is a top view of an attachment plate of a gas dome apparatus and an attachment support of a gas dome structure, the gas dome apparatus being in a closed position.
Fig. 5 is a partial schematic view of a storage facility during a step of placing a gas dome apparatus in an interior space according to one embodiment.
Fig. 6 is a partial schematic view of a storage facility during the step of lifting or lowering a gas dome apparatus toward or away from a gas dome structure according to one embodiment.
Fig. 7 schematically depicts a liquefied gas carrier, partly broken away, comprising a storage facility and a quay for loading/unloading the tank.
Detailed Description
Referring to fig. 1, this figure shows in part a storage facility 1 made up of a support structure 2 and a sealed and thermally insulated tank 71 for storing liquefied gas.
The liquefied gas stored in the tank 1 may in particular be Liquefied Natural Gas (LNG), i.e. a gas mixture comprising mainly methane and one or more other hydrocarbons. The liquefied gas may also be ethane or Liquefied Petroleum Gas (LPG), i.e. a mixture of hydrocarbons produced after petroleum extraction, which mixture mainly comprises propane and butane.
The tank 71 is placed inside a support structure 2, which support structure 2 may be, for example, part of a double hull of the vehicle 70. The tank 71 is generally polyhedral in shape and comprises a plurality of tank walls, in particular a top wall 3, which define an interior space 4. As shown in fig. 2, the top wall 3 has, in the thickness direction of the wall, from the outside of the can toward the inner space 4 of the can: a secondary thermal insulation 6 resting against an inner upper support wall 5 of the support structure 2; a secondary sealing film 7; a primary thermal insulation barrier 8; and a primary sealing membrane 9 for contact with the fluid stored in the tank 71. The thickness direction of the top wall 3 is the height direction of the tank 71.
As shown in fig. 1, the top wall 3 has a gas discharge opening 10 and a loading/unloading opening 11 passing through the top wall.
The gas discharge opening 10 is designed to be equipped with a gas dome structure 12, which in particular comprises a gas dome device 13, in order to provide a passage for the gaseous phase of the liquefied gas located in the interior space 4 of the tank to circulate towards one or more vapor manifolds (not shown) located on the outside of the tank 71.
The loading/unloading opening 11 is designed to be equipped with a liquid dome structure (not shown) through which, in particular, loading and unloading pipes for loading/unloading liquefied gas into/from the tank 71 pass.
Furthermore, during manufacture, one of the side walls of the support structure has a temporary side opening 33, and this temporary side opening is designed to allow the introduction of a number of cumbersome devices, such as thermal isolation barriers and sealing barriers, into the support structure of the tank before assembly. Obviously, the temporary side opening 33 is closed and adopts a multi-layer structure to form a can.
The following description will more specifically describe the gas dome structure 12 and the gas dome device 13, and the method of fitting the gas dome device 13 into the gas dome structure 12.
As shown in fig. 2, the gas dome structure 12 comprises a sealing tube 14 passing through the outer upper support wall 15, the inner upper support wall 5 and into the gas discharge opening 10. The sealing tube 14 extends along the height of the tank and is oriented orthogonally to the top wall 3. The sealing tube 14 is welded in a sealing manner to the secondary sealing membrane 7 and the primary sealing membrane 9.
The sealing tube 14 comprises a cylindrically shaped outer shaft 16 which passes through the outer upper support wall 15 and is fixed to the inner upper support wall 5. The outer shaft 16 is open at both ends of the outer shaft. The gas dome structure 12 further comprises an inner shaft 17 fixed to the outer shaft 16. The inner shaft 17 is constituted by a cylindrical peripheral wall open at both ends of the inner shaft. The inner shaft 17 is coaxial with the outer shaft 16 and extends inside the outer shaft 16.
An insulating intermediate space 18 is formed between the outer shaft 16 and the inner shaft 17. The insulating intermediate space 18 is filled with insulating filler evenly distributed on the inner surface of the outer shaft 16 between said outer shaft 16 and the inner shaft 17. The insulating filler comprises one or more insulating materials selected from the group consisting of: glass wool, rock wool, cotton wool, fibrous material, perlite, expanded perlite, polymeric foam, and aerogel. Alternatively or additionally, the insulating intermediate space 18 is placed in a vacuum.
The inner shaft 17 and the outer shaft 16 are connected to each other by an annular plate 19, which annular plate 19 extends horizontally between the inner shaft 17 and the outer shaft 16 transversely to the height direction. The inner shaft 17 does not extend to the upper end of the outer shaft 16.
Furthermore, it can be seen from fig. 2 that an insulating filler 20, for example polyurethane foam and/or glass wool, is distributed around the outer shaft 16 in order to insulate the sealing tube 14 above the upper end of the inner shaft 17.
The gas dome structure 12 comprises at least one vapour collection conduit 21 passing in a sealed manner through the wall of the outer shaft 16 and opening outwards in a collection zone 22 located inside the sealing tube 14. Thus, the vapor collection conduit 21 is adapted to convey vapor between a collection region 22 located inside the sealing tube 14 and a vapor manifold (not shown) located outside the sealing tube 14. The collecting region 22 is located between the upper end of the inner shaft 17 and the upper end of the outer shaft 16 in the height direction.
The gas dome structure 12 may comprise two vapor collection ducts 21 passing in a transverse and sealed manner through the peripheral wall of the outer shaft 16. In the embodiment shown, the end of the vapor collection tube 21 is flush with the wall of the outer shaft 16, but could equally protrude into the sealing tube 14.
The vapor collection pipe 21 leads to a vapor manifold, not shown, and is equipped with a safety valve. The safety valve is calibrated to discharge gas in the gas phase from the tank when the vapour pressure in the tank is between 0 and 2 bar above the threshold pressure, for example between 0.2 and 0.4 bar above the threshold pressure. The relief valve is calibrated to be slightly below the threshold pressure that the vapor pressure in the tank must not exceed, taking into account the pressure loss. The vapor collection conduit 21 allows vapor in the canister to be drawn out in the event of overpressure and its purpose is to control the pressure in the canister to prevent damage to the canister from overpressure. The vapor collection pipe 21 delivers the vapor to a vapor manifold, which leads, for example, to a ventilated mast, a burner, a propulsion device of a vehicle, or a liquefaction device, in which the gas in the gas phase is reliquefied and then returned to the tank in the form of a liquid phase.
Another vapor collection conduit may lead to a vapor manifold connected to tubing for connection to a gas storage terminal during loading/unloading of the tank. Thereby, the vapor collection conduit allows vapor communication during operation of the load/unload tank. In particular, during a loading operation, when liquefied gas is transferred from the supply terminal to the tank, gas in the gas phase is transferred from the tank to the terminal through both the gas dome structure and the vapor collection conduit, so that the pressure in the top of the tank remains substantially constant. Conversely, during unloading operations in which liquefied gas is transferred from the tank to the terminal, gas in the gas phase is simultaneously transferred from the terminal to the tank to prevent pressure losses in the tank.
Furthermore, the upper end of the outer shaft 16 is equipped with an assembly flange 23. The assembly flange 23 has an annular shape and extends transversely to the height direction, in other words horizontally towards the outside of the outer shaft 16. The assembly flange 23 is welded to the upper end of the outer shaft 16.
The gas dome structure 12 further comprises a cover (not shown) fixed to said assembly flange 23 such that the upper end 14 of the outer shaft 16 is closed. An O-ring is compressed between the cover and the assembly flange 23. The cover is removably secured to the upper end of the outer shaft 16. When the cover is removed, the interior space 4 of the can is thus accessible, for example for maintenance and inspection purposes of the can. The cover portion is fixed to the assembly flange 23 by a plurality of fixing members, not shown. For example, the fixing members are each constituted by a bolt, for example comprising a threaded rod, and a nut interacting with said threaded rod.
As shown in particular in fig. 2, the gas dome structure 12 further comprises a gas dome means 13 located inside the sealing tube 14. The gas dome means extends in height from the collecting zone 22 all the way to the inner space 4 of the tank 71.
The gas dome device 13 includes a support pipe 24, an attachment plate 25, and a spray bar 26, the attachment plate 25 being attached to an upper end portion of the support pipe 24, the spray bar 26 being fixed along the support pipe 24 in the height direction. The spray bar 26 comprises in particular a spray tube 27 and a nozzle (not shown) connected to the spray tube 27 and located in the inner space 4 for spraying liquefied gas into the tank for reducing the temperature in the inner space. The nozzle 27 is connected to a gas supply pipe passing through the outer shaft 16. The support tube 24 is open such that a preferential channel is created for transporting the gas in the gas phase from the inner space 4 to the collecting zone 22. Thus, the support tube 24 has a larger dimension in the height direction, for example, a dimension of about 4 meters.
It is because of the large size of the gas dome assembly 13 that problems may occur during assembly of the gas dome assembly with the gas dome structure 12. Specifically, in the prior art, a gas dome device is inserted into a gas dome structure by passing the gas dome device through an upper end portion of a seal tube. Therefore, a considerable space of the order of a few meters must be left above the gas dome structure, which is not always the case.
The present invention is particularly aimed at assembling the gas dome device 13 to the gas dome structure 12 by designing the gas dome device to be able to avoid the need to leave a lot of free space above the gas dome structure by first placing the gas dome device in the inner space 4 of the tank 71 and then lifting the gas dome device into the gas dome structure through the lower end of the sealing tube 14. A method for fitting the gas dome assembly 13 into the gas dome structure 12 will be described below.
The attachment plate 25 extends in a horizontal plane and is attached to the outer shaft 16. This attachment will be described in detail below. The attachment plate 25, support tube 24 and spray bar 26 have been preassembled prior to being attached to the outer shaft 16 and placed in the canister.
To attach the attachment plate 25 to the outer shaft 16, an attachment support 28 is provided on the inner surface of the outer shaft 16 and circumferentially surrounds the outer shaft 16. The attachment supports 28 are spaced apart from each other in the circumferential direction so as to be separated from each other by a free space 29.
Furthermore, as can be seen from one of the embodiments in fig. 3 and 4, the attachment plate 25 has an annular shape, wherein the inner contour is in contact with the support tube 24 and the outer contour has a plurality of tab portions 30, which tab portions 30 protrude from the attachment plate 25 in a radial direction towards the outer shaft 16 and are arranged to surround the attachment plate 25. The lug portions 30 are also spaced apart from each other in the circumferential direction.
Before the gas dome device 13 is fixed to the gas dome structure 12, it should be provided that the gas dome device 13 can be moved in the height direction and can be oriented with respect to the gas dome structure 12 about a rotation axis extending in the height direction. It is specifically provided that the gas dome means 13 can be oriented in an open position and in a closed position. In the closed position, as shown in fig. 4, each tab portion 30 is aligned in a height direction with the attachment support 28 of the gas dome structure 12 such that the tab portion may be secured or rest on top of the attachment support. In the open position, as shown in fig. 3, each lug part 30 is aligned with a free space 29 formed between two attachment supports 28 of the gas dome structure 12 in the height direction, so that the gas dome device 13 can be moved translationally in the height direction with respect to the gas dome structure 12.
In the example shown, the attachment plate 25 comprises four lug portions 30 which are distributed at angular intervals of 90 ° around the attachment plate, and the circumferential dimensions of the lug portions are configured such that the circumferential dimension of the free space between the two lug portions 30 is greater than the circumferential dimension of the attachment support 28. Similarly, the outer shaft 16 is equipped with four attachment supports 28 distributed at angular intervals of 90 ° around the circumferential portion of the inner surface of the outer shaft 16, and the circumferential dimensions of the attachment supports are configured such that the circumferential dimensions of the free space 29 between the two attachment supports 28 are larger than the circumferential dimensions of the lug portions 30. The number of tab portions and attachment supports may be different and may be equal to three or six, for example, as long as this number allows the attachment plate 25 to be sufficiently attached and supported on the outer shaft 16.
Fig. 5 and 6 show steps in a method for fitting a gas dome assembly 13 into a tank for assembly with a gas dome structure 12.
According to the method of the present invention, the gas dome device 13 is placed in the inner space 4 of the tank 71, for example as shown in fig. 5, by placing the gas dome device 13 on a protective pad 31 arranged on the bottom wall 32 of the tank 71, before assembling the gas dome device 13 to the gas dome structure 12.
Next, as shown in fig. 6, the gas dome device 13 is lifted through the lower end of the sealing tube 14 into the gas dome structure 12, for example by means of cables, chains and slings, so that the gas dome device 13 is oriented in the open position shown in fig. 3. The gas dome device 13 may thus be lifted until the attachment plate 25 is located above the attachment support 28.
The gas dome device 13 is then oriented in the closed position and lowered back so that the lug portions 30 become resting on the attachment supports 28. Attachment means such as a screw/nut assembly then removably secures each lug segment 30 to attachment support 28.
In the case of manufacturing the tank 71, the gas dome device 13 is inserted into the inner space 4 of the tank 71 via the loading/unloading opening 11 or via a temporary side opening 33, which temporary side opening 33 is larger than the gas discharge opening 10 and is designed to carry in equipment required for manufacturing the tank 71 during manufacturing.
In the case of maintenance of the tank 71, or during maintenance, the gas dome assembly 13 has been assembled to the gas dome structure 12. Thus, the gas dome assembly may need to be removed for maintenance operations and then replaced. In this case, the attachment means between the lug part 30 and the attachment support 28 are removed. The gas dome means 13 is then oriented in the open position and then lowered into the inner space 4 for placement on the protective pad 31, as shown in fig. 5. After the maintenance operation is finished, the gas dome device 13 is lifted back to the open position, then oriented to the closed position and attached to the attachment support 28.
Other attachment methods or designs of attachment may also be employed, as long as the gas dome device 13 can be inserted through the lower end of the sealing tube 14. For example, in another embodiment, not shown, the attachment plate 25 may be attached to the attachment support 28, come into contact with the attachment support 28 from the bottom, and be attached to the attachment support 28 by an attachment means. This embodiment does not require orienting the lug parts on the gas dome means 13 or the attachment plate 25, but instead places all the loads on the attachment means.
In another embodiment, not shown, each attachment support 28 comprises a rod protruding upwards in the height direction, and each lug part 30 of the attachment plate 25 comprises a hole into which the rod is inserted when the gas dome device 13 is lowered after being oriented in the closed position.
In another embodiment, not shown, each attachment support 28 comprises two circumferential stops on both sides of the attachment support 28 in the circumferential direction. In this case, when the gas dome device 13 is lowered after being oriented to the closed position, the circumferential stop of the attachment support 28 is configured to flank the tab portion to prevent rotation of the gas dome device about the axis of rotation.
Referring to fig. 7, a view of a liquefied gas carrier 70, partially cut away, shows a generally prismatic shaped sealed insulation tank 71 mounted in a double housing 72 of the carrier. The walls of the tank 71 include: a primary sealing barrier for contact with LNG contained in the tank; a secondary sealing barrier disposed between the primary sealing barrier and the double housing 72 of the vehicle; and two isolation barriers disposed between the primary and secondary sealing barriers and between the secondary sealing barrier and the double housing 72, respectively.
In a manner known per se, the loading/unloading pipe 73 arranged on the upper deck of the transport means can be connected to the sea or port terminal by means of suitable connections for transferring LNG cargo from or to the tank 71.
Fig. 7 also shows an example of an offshore terminal comprising a loading and unloading station 75, a subsea pipe 76 and an onshore facility 77. The loading and unloading station 75 is a fixed offshore facility comprising a movable arm 74 and a tower 78 supporting the movable arm 74. The movable arm 74 carries a bundle of insulating flexible hoses 79 that can be connected to the load/unload tube 73. The orientable movable arm 74 can be adjusted to fit all sizes of liquefied gas carrier. Within the tower 78 there extends a connecting duct (not shown). The loading and unloading station 75 allows loading or unloading of the liquefied gas carrier 70 from or to the land facility 77. The facility includes a liquefied gas storage tank 80 and a connection pipe 81 connected to the loading or unloading station 75 through a subsea pipe 76. The subsea conduit 76 allows transfer of liquefied gas between the loading or unloading station 75 and the onshore facility 77 over a longer distance, e.g., 5km, which enables the lng carrier 70 to remain a significant distance off shore during loading and unloading operations.
To generate the pressure required to deliver the liquefied gas, pumps on board the transport 70 and/or mounted to the onshore facility 77 and/or mounted to the loading and unloading station 75 are used.
While the invention has been described in connection with a number of specific embodiments, it is evident that the invention is in no way limited thereto and that the invention comprises all technical equivalents of the means described and combinations thereof which fall within the scope of the invention.
Use of the verb "to comprise" or "to comprise" and its conjugations does not exclude the presence of elements or other phases besides those stated in a claim.
In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (15)

1. A method for fitting a gas dome device (13) in a sealed and thermally insulated tank for storing liquefied gas, the method comprising the steps of:
-providing a support structure (2),
providing a sealed and thermally insulated tank within the support structure (2), the sealed and thermally insulated tank having an interior space (4), and the sealed and thermally insulated tank comprising a top wall (3), the top wall (3) comprising at least one thermally insulated barrier, at least one sealing membrane resting on the thermally insulated barrier, and a gas discharge opening (10) through the sealing membrane and the thermally insulated barrier, the sealed and thermally insulated tank comprising a gas dome structure (12), the gas dome structure (12) being fixed to the support structure (2) and the gas dome structure (12) passing through the gas discharge opening (10) to discharge gas from the interior space (4) of the tank,
-providing a gas dome device (13), said gas dome device (13) comprising at least one spray lance (26),
-placing said gas dome means (13) in said inner space (4) of said sealed and thermally insulated tank,
-lifting the gas dome means (13) from the inner space (4) into the gas dome structure (12),
-attaching the gas dome device (13) to the gas dome structure (12).
2. Method for fitting a gas dome device (13) according to claim 1, wherein the gas dome device (13) comprises a support tube (24), an attachment plate (25) fixed to the support tube (24), and a spray bar (26) fixed to the support tube (24), the spray bar (26) comprising a spray tube (27) and a nozzle fixed to the spray tube (27), and wherein the gas dome structure (12) comprises a shaft (16) and an attachment support arranged circumferentially on an inner surface of the shaft (16), the attachment plate (25) being attached to the attachment support (28) during the step of attaching the gas dome device (13).
3. Method for fitting a gas dome device (13) according to claim 2, wherein the support tube (24), the attachment plate (25) and the spray bar (26) are preassembled before placing the support tube (24), the attachment plate (25) and the spray bar (26) into the sealed and thermally insulated tank.
4. A method for fitting a gas dome device (13) according to claim 2 or claim 3, wherein the support tube (24) comprises a lower end portion, which is open in the inner space (4) of the tank after the gas dome device (13) has been attached to the gas dome structure (12), and an upper end portion, which protrudes in height direction from the support structure (2).
5. Method for fitting a gas dome device (13) according to one of claims 2 to 4, wherein the shaft (16) has a cylindrical shape of circular cross section and the attachment plate (25) has an annular shape, the attachment plate (25) comprising a tab portion (30), the tab portion (30) protruding in a radial direction and being arranged to surround the attachment plate (25), the tab portion (30) being configured to interact with the attachment support in a closed position.
6. Method for fitting a gas dome device (13) according to claim 5, wherein the gas dome device (13) is orientable relative to the gas dome structure (12) from an open position to a closed position and vice versa by rotation about an axis of rotation lying in a height direction, and wherein in the closed position each lug is aligned in the height direction with an attachment support (28) of the gas dome structure (12) and in the open position each lug is aligned with a free space formed between two attachment supports of the gas dome structure (12), and wherein during the step of lifting the gas dome device (13) is oriented in the open position.
7. Method for fitting a gas dome device (13) according to claim 6, wherein the step of attaching comprises the sub-steps of:
-orienting said gas dome means (13) in said closed position,
-attaching each tab portion to one of the attachment supports by means of an attachment device.
8. Method for fitting a gas dome device (13) according to one of claims 2 to 7, wherein, after the step of lifting the gas dome device (13), the attachment plate (25) is located above the attachment support in the height direction.
9. Method for fitting a gas dome device (13) according to one of claims 1 to 8, wherein the tank comprises a loading/unloading opening and/or a temporary side opening (33) in the support structure and spaced apart from the gas discharge opening (10), and wherein the gas dome device (13) is passed through the loading/unloading opening or through the temporary side opening (33) during the step of placing the gas dome device (13) into the interior space (4).
10. Method for fitting a gas dome device (13) according to one of claims 1 to 8, wherein, during the step of providing the tank, the tank comprises a gas dome device (13) attached to the shaft (16) of the gas dome structure (12), and the step of placing the spray boom (26) in the inner space (4) comprises the sub-steps of:
-removing the gas dome means (13) from the gas dome structure (12), and
-lowering the gas dome means (13) towards the inner space (4) of the tank.
11. A storage facility (1), the storage facility (1) comprising a support structure (2) and a sealed and thermally insulated tank placed in the support structure (2) for storing liquefied gas, wherein the sealed and thermally insulated tank comprises an inner space (4) and a top wall (3), the top wall (3) comprising at least one thermally insulated barrier, at least one sealing membrane resting on the thermally insulated barrier, and a gas discharge opening (10) through the sealing membrane and the thermally insulated barrier, the sealed and thermally insulated tank comprising a gas dome structure (12), the gas dome structure (12) being fixed to the support structure (2) and the gas dome structure (12) passing through the gas discharge opening (10) to discharge gas from the inner space (4) of the tank,
wherein the storage facility (1) comprises a gas dome device (13) with at least one spray boom (26), the gas dome device (13) being configured to be placed in advance in the interior space (4) of the sealed and thermally insulated tank, and then the gas dome device (13) being lifted from the interior space (4) into the gas dome structure (12) such that the gas dome device (13) is attached to the gas dome structure (12).
12. The storage facility (1) according to claim 11, wherein the gas dome device (13) comprises a support tube (24), an attachment plate (25) fixed to the support tube (24), and a spray bar (26) fixed to the support tube (24), the spray bar (26) comprising a spray tube (27) and a nozzle fixed to the spray tube (27),
wherein the gas dome structure (12) comprises a shaft (16) and an attachment support arranged circumferentially on an inner surface of the shaft (16), the attachment plate (25) being attached to the attachment support (28) during the attachment step of the gas dome device (13),
and wherein the shaft (16) has a cylindrical shape of circular cross section and the attachment plate (25) has an annular shape, the attachment plate (25) comprising tab portions (30), the tab portions (30) protruding in a radial direction and being arranged to encircle the attachment plate (25), the tab portions (30) being configured to interact with the attachment support in a closed position.
13. A vehicle (70) for transporting a cold liquid product, the vehicle (70) comprising a double hull (72) and a storage facility (1) according to claim 11 or claim 12, the support structure (2) of the storage facility (1) comprising part of the double hull.
14. A delivery system for a cold liquid product, the delivery system comprising: the vehicle (70) of claim 13; -an insulated pipeline (73, 79, 76, 81) arranged such that the tank (71) mounted in the hull of the vehicle is connected to a floating or onshore (77) storage facility (1); and a pump for pumping a flow of cold liquid product from the floating or onshore storage facility (1) through the insulated pipeline to the tank of the transport means or from the tank of the transport means through the insulated pipeline to the floating or onshore storage facility (1).
15. A method for loading or unloading a vehicle (70) according to claim 13, wherein cold liquid product is transported from a floating or onshore (77) storage facility (1) to the tank (71) of the vehicle through an insulated line (73, 79, 76, 81) or cold liquid product is transported from the tank (71) of the vehicle to the floating or onshore (77) storage facility (1) through the insulated line (73, 79, 76, 81).
CN202311037464.5A 2022-08-18 2023-08-16 Method for fitting a spray rod to a tank Pending CN117588679A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2208377A FR3138903A1 (en) 2022-08-18 2022-08-18 Method of installing a spray boom on a tank
FRFR2208377 2022-08-18

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CN117588679A true CN117588679A (en) 2024-02-23

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KR20140061726A (en) 2012-11-14 2014-05-22 대우조선해양 주식회사 Gas exhausts & spraying device structure provided in the gas dome for the flng
KR20140088975A (en) 2012-12-31 2014-07-14 대우조선해양 주식회사 Recess type gas dome structure
KR200487091Y1 (en) * 2016-10-27 2018-08-02 대우조선해양 주식회사 Degassing duct fixing apparatus for gas dome of lng carrier

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