EP4202285A1 - Cuve de stockage de gaz liquéfié - Google Patents

Cuve de stockage de gaz liquéfié Download PDF

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Publication number
EP4202285A1
EP4202285A1 EP22214632.6A EP22214632A EP4202285A1 EP 4202285 A1 EP4202285 A1 EP 4202285A1 EP 22214632 A EP22214632 A EP 22214632A EP 4202285 A1 EP4202285 A1 EP 4202285A1
Authority
EP
European Patent Office
Prior art keywords
tank
tower
sump
center
bottom wall
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
EP22214632.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Julien COUTEAU
Vincent Berger
Marc BOYEAU
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
Priority claimed from FR2114275A external-priority patent/FR3130930B1/fr
Application filed by Gaztransport et Technigaz SA filed Critical Gaztransport et Technigaz SA
Publication of EP4202285A1 publication Critical patent/EP4202285A1/fr
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • 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
    • 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 
    • 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
    • F17C13/08—Mounting arrangements for 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
    • 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
    • F17C3/027—Wallpanels for so-called membrane 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
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • 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
    • 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
    • F17C2205/0153—Details of mounting arrangements
    • 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
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • 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
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, 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
    • F17C2223/0146—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
    • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
    • 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
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0171—Arrangement
    • F17C2227/0178—Arrangement in the vessel
    • 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
    • F17C2260/011—Improving strength
    • 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

Definitions

  • the present invention relates to the field of storage and/or transport of a cargo of liquefied gas, such as liquefied natural gas, liquid ammonia or even liquefied petroleum gas. More particularly, the invention relates to a tower for loading and unloading a liquefied gas storage tank.
  • a cargo of liquefied gas such as liquefied natural gas, liquid ammonia or even liquefied petroleum gas. More particularly, the invention relates to a tower for loading and unloading a liquefied gas storage tank.
  • Liquefied natural gas commonly known by the acronym “LNG”, or also by the acronym “LNG” for "Liquefied Natural Gas”
  • LNG Liquefied Natural Gas
  • the LNG is stored in the liquid state in a thermally insulated tank at a temperature close to -160°C, the LNG then occupying 1/600 of the volume that it would occupy in the gaseous state, thus making it possible to facilitate transporting it from one site to another.
  • the tank comprises a loading and unloading tower suspended from a cover which closes an opening of the tank.
  • the loading and unloading tower may comprise a structure of the tripod type, that is to say comprising three vertical masts connected to each other by crosspieces forming a lattice structure, said tower being guided by a support of the tank emerging from a back wall.
  • the loading and unloading tower then comprises at least one unloading pipe and a pumping device whose function is to unload the cargo from the tank, said pumping device being connected to a drive device arranged outside the tank.
  • the suction element is arranged at least partly in a sump formed in the bottom wall of the tank which makes it possible to increase the quantity of cargo extracted by the unloading conduit while ensuring the immersion of the suction element in said cargo, thus preserving its integrity.
  • the present invention falls within this context by proposing an arrangement of the pumping member different from the already existing positioning solutions allowing on the one hand to facilitate access to the pumping member and to the unloading conduit and to on the other hand to reduce the mechanical stresses imposed on the storage tank.
  • the main object of the present invention is thus a tank intended for a structure and configured to contain a liquefied gas, comprising a bottom wall, a ceiling wall and several side walls extending between the bottom wall and the ceiling wall, the storage tank comprising at least one loading and/or unloading tower extending along a vertical direction between the bottom wall and the ceiling wall, the tower comprising a base and at least three masts integral with the base of which two masts form rear masts and the third mast forms a front mast, the tower comprising at least one liquefied gas pumping member and a sump extending through the bottom wall and in which the pumping member is at least partially disposed, characterized in that the sump is disposed at least partly outside a perimeter defined by a triangle of vertices centered on the masts and passing through a periphery of the forward mast, the sump being disposed in an angular sector delimited by two axes each passing through a center of the tower and forming an angle of at most 90°.
  • the tower thus makes it possible to be able to load or unload liquefied gas into or from a tank in which the tower is installed.
  • the perimeter delimited by the triangle and the front mast corresponds to an axial projection of the three masts of the tower on the bottom wall of the storage tank, this projection being visible in a plane perpendicular to the vertical direction of the tower.
  • the triangle has three vertices which are each located at the center of each mast, the perimeter encompassing an outer periphery of the foremast.
  • the pumping member is configured to supply fuel to at least one consumer of the structure.
  • the pumping member is configured to pump the cargo out of the tank, in particular with a view to unloading it.
  • the sump is arranged beyond an arc of a circle centered on the center of the tower, said arc of a circle tangent to a rear zone of the front mast of the tower.
  • center of the tower is also understood to mean the center of a circle passing through the center of the three masts of the tower. This center is taken as a reference for the arc of a circle passing through the foremast constituting a delimitation of a zone in which the sump is arranged.
  • this zone in which the sump is placed is defined in response to at least three conditions, which are that the sump must be placed outside the perimeter, that it be placed in the angular sector previously described and that it be at beyond the arc of a circle centered on the tower and passing through a rear periphery of the foremast.
  • the sump is in a zone of the bottom wall defined on the one hand by an angular sector delimited by two axes each passing through a center of the tower and forming an angle of at most 90°, the front mast being arranged in the angular sector, the zone being defined on the other hand by an arc of a circle centered on the center of the tower, the arc of a circle tangent to the rear zone of the front mast of the tower.
  • the angle of the angular sector is open on the front mast.
  • the foremast is arranged in the angular sector while participating in determining the exclusion perimeter.
  • the tower comprises at least one unloading member arranged between the front mast and one or the other of the rear masts.
  • the pumping member which is arranged in the sump is intended to suck in liquefied gas to supply fuel to at least one consumer of the structure or to discharge the liquefied gas from the storage tank.
  • the unloading member is intended solely for unloading liquefied gas from the storage tank.
  • the unloading member is a first unloading member
  • the tower comprising a second unloading member, the first unloading member being arranged between the front mast and one of the rear masts, the second unloading member being arranged between the front mast and the other rear mast and according to an axial projection identical to that of the first unloading member.
  • one of the axes participating in delimiting the angular sector is secant with an axis passing through the center of the tower and the center of the front mast, forming an angle of between 40° and 50° .
  • one of the axes participating in delimiting the angular sector intersects with an axis passing through the center of the tower and the center of the front mast, forming an angle of 45°.
  • the arc of a circle has a minimum radius equal to 1600 mm.
  • the arc of a circle has a radius of 1650mm or 1700mm.
  • the arc of a circle is a minimal arc of a circle, the sump being arranged between the minimal arc of a circle and a maximum arc of a circle centered on the center of the tower and with a radius at maximum equal to 3400mm.
  • the tower comprises a system for loading the tank with liquefied gas, a projection of the loading system on the bottom wall being arranged in the angular sector, a location of the sump in the angular sector being distinct from the loading system projection.
  • Separatate is meant the fact that the location of the sump and the axial projection of the loading system do not intersect, that is to say that the sump is not disposed totally or partially below the system loading.
  • the angular sector comprises a first sub-sector and a second sub-sector symmetrical with respect to an axis passing through the center of the tower and the center of the front mast.
  • a projection of the loading system on the bottom wall is placed in the first sub-sector while the sump is placed in the second sub-sector.
  • the sump and a projection of the loading system on the bottom wall are arranged in the same sub-sector.
  • a straight line passing through the center of the loading system and the center of the front mast also passes through the sump. This line passes more precisely through the sump, without necessarily passing through the center of said sump.
  • an axis passing through the center of the tower and through the center of the front mast passes through the sump.
  • At least the bottom wall of the storage tank comprises at least one thermally insulating layer and a sealing membrane carried by the thermally insulating layer, the sealing membrane helping to define a internal volume of the tank, the sealing membrane comprising several metal strips having raised edges and connected to each other by their raised edges.
  • the present invention also relates to a structure comprising a storage tank as described in this document, the structure being chosen from among a ship for transporting liquefied gas, a barge, a reliquefaction unit, a gasification unit, a gravity platform or land structure.
  • variants of the invention may be associated with each other, in various combinations, insofar as they are not incompatible or exclusive with respect to each other.
  • variants of the invention may be imagined comprising only a selection of characteristics described below in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage and/or to differentiate the invention. compared to the prior art.
  • a longitudinal direction corresponds to a main direction of elongation of the storage tank, this longitudinal direction being parallel to a longitudinal axis L of a reference L, V, T illustrated in the figures.
  • a vertical direction corresponds to a direction along which a loading and/or unloading tower mainly extends, this vertical direction being parallel to a vertical axis V of the reference L, V, T and this vertical axis V being perpendicular to the longitudinal axis L.
  • a transverse direction corresponds to a direction parallel to a transverse axis T of the reference L, V, T, this transverse axis T being perpendicular to the longitudinal axis L and the vertical axis V.
  • FIG. 1 illustrates a structure 1 corresponding here to a vessel for transporting a liquefied gas.
  • the ship comprises at least one tank 2 for storing and/or transporting the liquefied gas comprising at least one bottom wall 4, visible on the figures 2 to 4 , and a ceiling wall, here not visible and opposite to each other in a vertical direction V of the tank 2, said walls being connected to each other by side walls 6.
  • the bottom wall 4, the ceiling wall and the side walls 6 participate in delimiting a storage volume for the liquefied gas.
  • the tank 2 is configured to store a gas in the liquid state, this gas possibly being liquefied natural gas, liquid ammonia or else liquefied petroleum gas for example. These gases are in the liquid state at low temperatures, generally below 0°C and can go down to -163°C for liquid natural gas, for example.
  • Such a tank 2 may be installed for example on a structure 1 intended for the transport of liquefied gas, such as a ship or a barge, for the treatment of liquefied gas, such as a reliquefaction unit and/or a gasification, or else to the storage of liquefied gas, such as a terrestrial structure or a gravity platform.
  • a structure 1 intended for the transport of liquefied gas, such as a ship or a barge, for the treatment of liquefied gas, such as a reliquefaction unit and/or a gasification, or else to the storage of liquefied gas, such as a terrestrial structure or a gravity platform.
  • At least the bottom wall 4 comprises at least one thermally insulating layer and a sealing membrane carried by the thermally insulating layer.
  • each of the walls of the tank 2 comprises at least one thermally insulating layer and a sealing membrane.
  • the walls of the tank 2 comprise at least one primary space participating in delimiting an internal volume of the tank 2 and a secondary space bearing the primary space, each of the spaces comprising a thermally insulating layer and a sealing membrane. It is understood that the walls of the tank 2 are thus composed of layers and membranes superimposed one above the other.
  • the walls of the tank 2 comprise, from the outside of the tank 2 towards the internal volume of said tank 2, a secondary thermally insulating layer, a secondary sealing membrane carried by the secondary thermally insulating layer, a layer primary thermally insulating membrane arranged on the secondary sealing membrane and a primary sealing membrane carried by the primary thermally insulating layer, the primary sealing membrane participating in delimiting the internal volume of the tank 2.
  • the thermally insulating layers are formed of thermally insulating blocks, or boxes made of plywood panels filled with a thermally insulating material.
  • sealing membrane may relate to the primary sealing membrane and/or to the secondary sealing membrane, unless otherwise stated.
  • the sealing membrane for its part comprises several metal strips each having an outer face in contact with the primary thermally insulating layer and an inner face facing the internal volume of the tank 2.
  • the metal strips also have a folded edge, the metal strips being interconnected via their folded edges.
  • the folded edges of two metal strips adjacent to each other are made integral with one another, by welding for example, thereby rendering the metal strips integral with one another.
  • the fixing of the metal strips to each other by means of their folded edges favors an elasticity of the sealing membrane, in particular when the walls of the tank 2 undergo thermal deformations during the loading and / or the unloading of the tank 2 in liquefied gas.
  • the tank 2 comprises a loading and/or unloading tower 8 extending vertically between the bottom wall 4 and the ceiling wall.
  • the tower 8 is configured to load and/or unload the liquefied gas into and/or from the tank 2, and comprises a pumping member 10 capable of sucking the liquefied gas contained in the tank 2.
  • the pumping member 10 is a pump which can recover liquefied gas flowing in the sump 14 in order for example to supply a consumer of a ship in which the tank 2 is installed, such a consumer being for example a motor of a generator of 'electricity.
  • the ceiling wall comprises an opening in which is arranged a lid 12 constituting the tank 2 so as to close the storage volume of the tank 2 in a sealed manner, in particular by extending at the level of the opening the wall of ceiling.
  • the cover 12 is at least partly crossed by the tower 8 so as to be able to load or unload liquefied gas to or from the storage space of the tank 2.
  • the tank 2 further comprises at least one sump 14 in which is housed at least partially the pumping member 10.
  • the sump 14 is arranged through the bottom wall 4 of the tank 2 and thus makes it possible to be able to suck in the gas liquefied flowing into tank 2.
  • Tower 8 particularly visible at picture 2 , comprises a structure which extends mainly along a main direction of extension parallel to the vertical direction V, having an upper end and a lower end, the upper end facing the ceiling wall while the lower end is opposite the bottom wall 4. More particularly, the tower 8 is formed by at least three masts 16, or otherwise called a tripod structure, and a base 18 advantageously disposed at its lower end making the three masts 16 integral with each other. others.
  • the structure of the loading tower 8 comprises the at least three masts 16 secured to each other by means of a lattice structure 20, each of the three masts 16 passing through the cover of the tank 2. then a front mast 16a of the tower 8 and two rear masts 16b of the tower 8, defined according to a direction of advancement of the ship, visible to the figure 1 , under normal sailing conditions, the foremast 16a being the mast of the tower 8 furthest forward in tank 2.
  • the tower 8 comprises at least one unloading member 22, 24 for the liquefied gas present in the tank 2, the unloading member 22, 24 being arranged between the front mast 16a and the one or the other of the rear masts 16b, the pumping device 10 being configured to supply fuel to at least one consumer of the structure 1.
  • the front mast 16a and one or the other of the masts rear 16b it is meant that a line passing through the center of the front mast 16a and the center of the said rear mast 16b passes through the unloading device 22, 24.
  • the unloading member 22, 24 is intended solely for unloading liquefied gas from the tank 2, the pumping member 10 for its part, which is arranged in the sump 14, being as a reminder intended to suck liquefied gas to either supply fuel to at least one consumer of the structure 1 or to discharge the liquefied gas from the tank 2.
  • the tower 8 comprises a first unloading member 22 and a second unloading member 24, the first unloading member 22 being disposed between the front mast 16a and one of the rear masts 16b, the second unloading member 24 being disposed between the front mast 16a and the other rear mast 16b.
  • the unloading members 22, 24 are aligned relative to each other along a direction parallel to the transverse direction T.
  • the sump 14 is arranged at least partly outside a perimeter P defined by a triangle passing through the center of the three masts and through the front mast 16a, in an angular sector delimited by two axes A1, A2 each passing by a center of the tower 8 and forming an angle ⁇ of at most 90°.
  • the perimeter considered here is a shape which combines a triangle and a circle, the latter being an axial projection of the front mast 16a on the bottom wall, its center then being placed at a vertex of the triangle.
  • the sump 14 is also arranged beyond an arc of a circle C1 centered on the center of the tower 8, said arc of a circle C1 tangent to a rear zone of the front mast 16a of the tower 8. More precisely, the sump 14 is disposed in a zone 26 defined in response to at least three conditions which are that the sump 14 must be disposed outside the perimeter P which combines the triangle and the forward mast projection, that it be disposed in the angular sector previously described and that it is beyond the arc of a circle C1 centered on the tower 8 and which is tangential to the rear zone of the front mast 16a.
  • the pumping member 10 is also arranged at least in part outside the perimeter P defined above, in the angular sector delimited by the two axes A1, A2 each passing through the center of tower 8 and forming an angle of at most 90°, and finally beyond the arc of a circle C1 centered on the center of tower 8 and which is tangential to the rear zone of the front mast 16a of tower 8 Indeed, the pumping member 10 is less partially disposed in the sump 14.
  • the perimeter P delimited at least in part by the triangle of vertices centered on the masts corresponds to an axial projection of the center of each mast joined by sides of the triangle, this projection being visible in a plane perpendicular to the vertical direction V.
  • each of the masts 16 has an inner face 28 oriented towards the other masts 16 and an outer face 30 facing the outside of the tower 8, the distinction between the inner face 28 and the outer face 30 being assessed by example here with regard to the sides which form the triangle represented on the figure 3 and4.
  • the location of the sump 14 is distinct from a projection of the front mast 16a on the angular sector, as illustrated in the figure 3 And 4 by a cross on the projection of the front mast 16a in the angular sector.
  • the angular sector it is here defined by the two axes A1, A2 passing through the center of the tower 8, that is to say the center of a circle passing through the center of the three masts 16 of the tower 8
  • the two axes A1, A2 intersect each other at the center of the tower 8.
  • These two axes A1, A2 form an angle of at most 90°, and participate in defining at the least partly transversely the zone 26 in which the sump 14 and the pumping member are arranged.
  • each of the axes A1, A2 passes through one of the unloading members 22, 24 of the tower 8.
  • each of the axes A1, A2 passes through an outer periphery of the unloading members 22, 24.
  • the angle of the angular sector is open on the front mast 16a.
  • the front mast 16a is framed transversely by the axes A1, A2 defining the angular sector.
  • one of the axes A1, A2 participating in delimiting the angular sector intersects with an axis passing through the center of the tower 8 and through the center of the front mast 16a, forming an angle of between 40° and 50°.
  • the angle is 45°.
  • each of the axes A1, A2 participating in delimiting the angular sector intersects with an axis passing through the center of the two rear masts 16b, each forming an angle of between 40° and 50°.
  • the angular sector comprises two angular sub-sectors which are symmetrical with respect to the axis passing through the center of the tower 8 and the center of the front mast 16a, this perpendicular axis also corresponding to the longitudinal axis of the tank.
  • the arc of a circle C1 is tangent to a rear zone of the front mast 16a of the tower 8, that is to say a zone of the front mast 16a which is located inside the triangle which helps to form the perimeter P.
  • the arc of a circle C1 passes through the inner face 28 of the front mast 16a.
  • the sump 14 can be, for example, arranged at the front of the front mast 16a, or be aligned with respect to the front mast 16a, transversely, and globally in any place of the zone 26.
  • the arc of a circle C1 has a minimum radius of 1600mm, 1650mm or 1700mm, this dimension being measured in a plane perpendicular to the vertical direction V between the center of the tower 8 and, here, the inner face 28 of the front mast 16a.
  • the zone 26 in which the sump 14 is arranged is longitudinally delimited by the arc of a circle C1 previously described, which is a first arc of a circle C1, and a second arc of a circle C2, the zone 26 being thus extending between the first arc of a circle C1 and the second arc of a circle C2 and between the axes A1 and A2 which border the angular sector according to the invention.
  • the first arc of a circle C1 corresponds more precisely to a minimum arc of a circle while the second arc of a circle C2 corresponds to a maximum arc of a circle.
  • the second arc of a circle C2 is centered on the center of the tower 8, and has a maximum radius equal to 3400mm, advantageously between 3200mm and 3400mm.
  • the second arc of a circle C2 has a radius of 3300mm.
  • the invention thus relates to a zone 26 of the bottom wall 4 of the tank 2 in which the sump 14 and the pumping member 10 are arranged.
  • This zone 26 is at least delimited transversely by the axes A1, A2 defining the angular sector, longitudinally at least by the first arc of a circle C1 and advantageously by the second arc of a circle C2, while excluding the interior of the perimeter formed by the perimeter P of the tower 8.
  • an axis 34 passing through the center of the tower 8 and the center of the front mast 16a passes through the sump 14, the axis 34 being substantially parallel to the direction longitudinal L.
  • the sump 14, the front mast 16a and the center of the tower 8 are aligned with each other. It is understood that in this arrangement, the sump 14 is far enough from the tower 8 to limit the stiffening of the bottom wall 4 of the tank 2 that its installation imposes.
  • the pumping member 10 is also aligned with the front mast 16a and the center of the tower 8, which facilitates the operations of installation, assembly and/or maintenance of said pumping member 10 in the tank 2 .
  • the tower 8 comprises the system 36 for loading liquefied gas from the tank 2, a projection of the loading system 36 on the bottom wall 4 being arranged in the zone 26, a location of the sump 14 in the zone 26 being distinct from the projection of the loading system 36.
  • “separate” is meant the fact that the location of the sump 14 and the projection of the loading system 36 do not overlap, that is to say that the sump 14 is not not arranged below the loading system 36.
  • the distinct arrangement of the location of the sump 14 and the projection of the loading system 36 makes it possible to avoid projecting liquefied gas directly into the sump 14, and therefore at least partly on the pumping member 10, when loading tank 2 with liquefied gas.
  • superimposing the loading system 36 and the sump 14 would complicate the installation and assembly of the tower 8 in the tank 2.
  • the angular sector is separated into a first sub-sector and a second sub-sector by the axis 34 passing through the center of the tower 8 and the center of the front mast 16a, the projection of the loading system 36 being arranged in the first sub-sector while the sump 14 is arranged in the second sub-sector.
  • the location of the sump 14 and the projection of the loading system 36 transversely surround the front mast 16a.
  • a straight line passing through the center of the projection of the loading system 36 and through the center of the front mast 16a also passes through the sump 14.
  • This straight line passes more precisely through the sump 14, without however necessarily passing through the center of said sump 14.
  • the present invention cannot however be limited to the means and configurations described and illustrated here and it also extends to any equivalent means and configuration as well as to any technically effective combination of such means.
  • the description of the location of the sump 14 in the first exemplary embodiment and in the second exemplary embodiment does not limit the invention, these examples being only illustrations of the implementation of the 'invention.
  • the invention relates to the fact that the sump 14 is arranged in an area 26 delimited at least by the angular sector defined by the two axes A1, A2, the perimeter P of the tower 8 and optionally the circular arc C1.

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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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP22214632.6A 2021-12-22 2022-12-19 Cuve de stockage de gaz liquéfié Pending EP4202285A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2114275A FR3130930B1 (fr) 2021-12-22 2021-12-22 Tour de chargement et de déchargement d’une cuve de stockage de gaz liquéfié
FR2210819A FR3130740A1 (fr) 2021-12-22 2022-10-19 Cuve de stockage de gaz liquéfié.

Publications (1)

Publication Number Publication Date
EP4202285A1 true EP4202285A1 (fr) 2023-06-28

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EP22214632.6A Pending EP4202285A1 (fr) 2021-12-22 2022-12-19 Cuve de stockage de gaz liquéfié

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Country Link
EP (1) EP4202285A1 (zh)
JP (1) JP2023093408A (zh)
KR (1) KR20230095853A (zh)
CN (1) CN116428503A (zh)
TW (1) TW202326022A (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016001142A1 (fr) * 2014-07-04 2016-01-07 Gaztransport Et Technigaz Cuve etanche et isolante disposee dans une double coque flottante
KR20160119343A (ko) * 2015-04-03 2016-10-13 삼성중공업 주식회사 액화가스 저장탱크 및 액화가스 배출방법
WO2019211550A1 (fr) * 2018-05-02 2019-11-07 Gaztransport Et Technigaz Cuve etanche et thermiquement isolante equipee d'une tour de chargement/dechargement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016001142A1 (fr) * 2014-07-04 2016-01-07 Gaztransport Et Technigaz Cuve etanche et isolante disposee dans une double coque flottante
KR20160119343A (ko) * 2015-04-03 2016-10-13 삼성중공업 주식회사 액화가스 저장탱크 및 액화가스 배출방법
WO2019211550A1 (fr) * 2018-05-02 2019-11-07 Gaztransport Et Technigaz Cuve etanche et thermiquement isolante equipee d'une tour de chargement/dechargement

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TW202326022A (zh) 2023-07-01
CN116428503A (zh) 2023-07-14
JP2023093408A (ja) 2023-07-04
KR20230095853A (ko) 2023-06-29

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