NO150630B - LIQUID STORAGE FOR LIQUIDS - Google Patents

LIQUID STORAGE FOR LIQUIDS Download PDF

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Publication number
NO150630B
NO150630B NO791099A NO791099A NO150630B NO 150630 B NO150630 B NO 150630B NO 791099 A NO791099 A NO 791099A NO 791099 A NO791099 A NO 791099A NO 150630 B NO150630 B NO 150630B
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NO
Norway
Prior art keywords
storage
work platform
storage containers
ballast system
ballast
Prior art date
Application number
NO791099A
Other languages
Norwegian (no)
Other versions
NO150630C (en
NO791099L (en
Inventor
Berger Eginhard
Albert Hofmann
Original Assignee
Linde Ag
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 Linde Ag filed Critical Linde Ag
Publication of NO791099L publication Critical patent/NO791099L/en
Publication of NO150630B publication Critical patent/NO150630B/en
Publication of NO150630C publication Critical patent/NO150630C/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00Large containers
    • B65D88/78Large containers for use in or under water
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C3/00Vessels not under pressure
    • F17C3/005Underground or underwater containers or vessels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0128Shape spherical or elliptical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05Size
    • F17C2201/052Size large (>1000 m3)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0678Concrete
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/032Hydrocarbons
    • F17C2221/033Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/032Hydrocarbons
    • F17C2221/035Propane butane, e.g. LPG, GPL
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033Small pressure, e.g. for liquefied gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04Handled 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
    • F17C2223/042Localisation of the removal point
    • F17C2223/046Localisation of the removal point in the liquid
    • F17C2223/047Localisation of the removal point in the liquid with a dip tube
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01Propulsion of the fluid
    • F17C2227/0128Propulsion of the fluid with pumps or compressors
    • F17C2227/0135Pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03Heat exchange with the fluid
    • F17C2227/0302Heat exchange with the fluid by heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0102Applications for fluid transport or storage on or in the water
    • F17C2270/0105Ships
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0102Applications for fluid transport or storage on or in the water
    • F17C2270/0118Offshore
    • F17C2270/0121Platforms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0102Applications for fluid transport or storage on or in the water
    • F17C2270/0118Offshore
    • F17C2270/0128Storage in depth

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Description

Foreliggende oppfinnelse vedrører et flytende lageranlegg for væsker, med minst to lagerbeholdere, med et ballastsystem og med en arbei-dsplattform, samt med en forbindelsessjakt mellom arbeidsplattformen og ballastsystemet, idet arbeidsplattformen The present invention relates to a floating storage facility for liquids, with at least two storage containers, with a ballast system and with a work platform, as well as with a connecting shaft between the work platform and the ballast system, the work platform

er anordnet ovenfor lagerbeholderne, hvorved lageranleggets oppdrift og vekt kan avstemmes slik ved fylling og tømming av ballastsystemet at lagerbeholderne og ballastsystemet befinner seg under og arbeidsplattformen over vannflaten. is arranged above the storage containers, whereby the storage facility's buoyancy and weight can be adjusted so that when filling and emptying the ballast system, the storage containers and the ballast system are located below and the working platform above the water surface.

Flytende lageranlegg benyttes f.eks. ved produksjon av jordolje eller gassfelter i kontinentalsokkel- eller andre maritime ora-xåder som midlertidige lageranlegg. Ved lagring av jordgass må gassen forst gjores flytende. Slike anlegg er også av interesse for varig transport, hvis opprettelse av en undervanns-transport-ledning er uhensiktsmessig av tekniske eller okonomiske grunner. Floating storage facilities are used e.g. in the production of crude oil or gas fields in continental shelves or other maritime areas as temporary storage facilities. When storing natural gas, the gas must first be liquefied. Such facilities are also of interest for permanent transport, if the creation of an underwater transport line is inappropriate for technical or economic reasons.

Lageranlegg av innledningsvis nevnte type er kjent. De består Storage facilities of the type mentioned at the outset are known. They consist

av lagerbeholdere, over hvilke det er anordnet en arbeidsplattform. Sistnevnte bæres av en eller flere stotter som rager over vannflaten. Under lagerbeholderne er det anordnet et iallast-system. of storage containers, above which a working platform is arranged. The latter is supported by one or more supports that protrude above the water surface. A ballast system is arranged under the storage containers.

Ved de kjente konstruksjoner viser det seg å være uheldig at ballastsystemet bare er tilgjengelig fra arbeidsplattformen via sjakter som forloper gjennom lagerrommet. Derved forringes lagervolumet og det stilles forst og fremst okte krav til den konstruktive utformningen av lagerbeholderne. Dette virker særlig uheldig ved lagring av flytendegjorte gasser med lavt kokepunkt, da den varmeisolering av lagerbeholderne som er nodyen-dig i slike tilfelle blir spesielt omfattende ved den okte indre overflate av lagervolumet og kantene som oppstår i tillegg. Til grunn for foreliggende oppfinnelse ligger derfor den oppgave å utvikle et lageranlegg av innledningsvis nevnte type, With the known constructions, it turns out to be unfortunate that the ballast system is only accessible from the work platform via shafts that run through the storage room. Thereby, the storage volume is reduced and, first and foremost, increased demands are placed on the constructive design of the storage containers. This is particularly unfortunate when storing liquefied gases with a low boiling point, as the thermal insulation of the storage containers which is necessary in such cases becomes particularly extensive at the rough inner surface of the storage volume and the edges that arise in addition. The present invention is therefore based on the task of developing a storage facility of the type mentioned at the outset,

som muliggjor optimal utnyttelse av det disponible lagervolum ved en enklest mulig konstruksjon. which enables optimal utilization of the available storage volume with the simplest possible construction.

Denne oppgave loses ved at arbeidsplattformen og lagerbeholderne er lagret uavhengig av hverandre på ballastsystemet. This task is solved by the work platform and the storage containers being stored independently of each other on the ballast system.

Ved lageranlegget ifolge oppfinnelsen har man fraveket det tid-ligere konstruksjonsprinsippet med tre etasjevis over hverandre opprettede elementer - ballastsystem - lagerbeholder - arbeidsplattform. I stedet lagres arbeidsplattformen direkte på ballastsystemet, på hvilket også lagerbeholderne er anordnet på vanlig måte, men uavhengig av arbeidsplattformen. The storage facility according to the invention has deviated from the previous construction principle with three elements built one above the other - ballast system - storage container - work platform. Instead, the work platform is stored directly on the ballast system, on which the storage containers are also arranged in the usual way, but independently of the work platform.

En stor fordel ved lageranlegg ifolge oppfinnelsen ligger i at lagerbeholderne kan fremstilles på en enkel måte. Det kan f.eks. benyttes kuletanker eller sylindriske tanker av konvensjonell konstruksjon, uten at det må anordnes gjennomfdringer til ballastsystemet som er anbrakt nedenfor lagerbeholderne. Ballastsystemet er tvert om tilgjengelig direkte fra arbeidsplattformen. A major advantage of storage facilities according to the invention lies in the fact that the storage containers can be produced in a simple way. It can e.g. ball tanks or cylindrical tanks of conventional construction are used, without the need to arrange feed-throughs for the ballast system which is placed below the storage containers. The ballast system is, on the contrary, accessible directly from the work platform.

Ved en gunstig utformning består hver lagerbe- With a favorable design, each bearing

Tiolder av en trykkfast yttervegg, innenfor hvilken det er anordnet en konvensjonelt konstruert tank. Den trykkfaste utformning av ytterveggen gjor det mulig å opprettholde atmosfæretrykk i lagerrommet. Derfor kan det som lagerbeholdere benyttes konven-sjonelle konstruksjoner som har vist seg hensiktsmessige på land, slik at en prismessig spesielt gunstig produksjon muliggjores. Som tanker egner seg sylindriske eller fortrinnsvis kuleformede utforelser. Den trykkfaste yttervegg er derved på en gunstig måte tilpasset tankformen for at vannfortrengning og dermed oppdriften av lageranlegget ikke skal okes unodig. Det er dog fordelaktig å la det gjenstå et mellomrom mellom ytterveggen og tanken, som er så stort at betjeningspersonalet kan bevege seg i mellomrommet. Denne forholdsregel muliggjor kont-roll av veggene og en eventuelt nodvendig tankisolasjon på en enkel måte. Tenths of a pressure-resistant outer wall, within which a conventionally constructed tank is arranged. The pressure-resistant design of the outer wall makes it possible to maintain atmospheric pressure in the storage room. Therefore, conventional constructions that have proven to be suitable on land can be used as storage containers, so that a particularly favorable production in terms of price is made possible. Cylindrical or preferably spherical designs are suitable as tanks. The pressure-resistant outer wall is thereby favorably adapted to the shape of the tank so that water displacement and thus the buoyancy of the storage facility is not unnecessarily increased. However, it is advantageous to leave a space between the outer wall and the tank, which is large enough that the operating staff can move in the space. This precaution enables control of the walls and any necessary tank insulation in a simple way.

Mellomrommet mellom ytterveggen og tanken kan være forsynt med et dreneringssystem, gjennom hvilket eventuelt lekkasjevann som trenger inn gjennom ytterveggen kan pumpes ut. The space between the outer wall and the tank can be provided with a drainage system, through which any leakage water that penetrates through the outer wall can be pumped out.

Lagerbeholderne er med fordel anordnet slik at deres yttervegger i det vesentlige er frittliggende og spyles av sjovannet. Dette vil særlig være gunstig ved lagring av væsker med lavt kokepunkt, da det på en enkel måte skjer en oppvarming av ytterveggene uten at dette krever spesielle innretninger. The storage containers are advantageously arranged so that their outer walls are essentially free-standing and are flushed by the waste water. This will be particularly beneficial when storing liquids with a low boiling point, as the outer walls are heated in a simple way without requiring special devices.

Lagerbeholderne er ved en fordelaktig utforelse av oppfinnelsen i forbindelse med arbeidsplattformen via hver sin sjakt. Disse sjakter kan forlope vertikalt eller på skrå og kan munne i ovre parti av lagerbeholderne. I sjaktene er de nodvendige ledninger for lasting og lossing av anlegget anbrakt. In an advantageous embodiment of the invention, the storage containers are in connection with the work platform via a separate shaft. These shafts can run vertically or at an angle and can open into the upper part of the storage containers. The necessary cables for loading and unloading the plant are located in the shafts.

Via de nevnte sjakter er også de nodvendige pumper for transport av lasten tilgjengelige. For dette formål er det gunstig at det forloper rorledninger fra arbeidsplattformen til bunnområdet i lagerbeholderen. Ved skrått forlopende sjakter, som kanskje kan være nodvendige ved en liten arbeidsplattform, når sjaktene skal munne i det ovre parti av kuletanker, kan det også være gunstig at rørledningene i nedre parti av tanken krummes slik at de ender vertikalt. Dette viser seg å være fordelaktig, for-di pumpene for væsken, som med fordel er utformet som nedsenkbare pumper, vil stå vertikalt på tankbunnen ved en slik foring. Via the aforementioned shafts, the necessary pumps for transporting the load are also available. For this purpose, it is beneficial for rudder lines to run from the work platform to the bottom area of the storage container. In the case of slanting shafts, which may be necessary for a small work platform, when the shafts are to open into the upper part of the ball tanks, it can also be beneficial that the pipelines in the lower part of the tank are curved so that they end vertically. This turns out to be advantageous, because the pumps for the liquid, which are advantageously designed as submersible pumps, will stand vertically on the tank bottom with such a lining.

Da arbeidsplattformen er direkte lagret på ballastsystemet, har forbindelsessjaktene mellom arbeidsplattformen og lagerbeholderne ingen stottefunksjon for arbeidsplattformen og utover derfor heller ingen spesiell belastning på lagerbeholderne. As the work platform is directly stored on the ballast system, the connection shafts between the work platform and the storage containers have no support function for the work platform and therefore no special load on the storage containers.

Ved en fordelaktig utformning er ballastsyste- In an advantageous design, the ballast system is

met oppdelt i en flerhet ballastrom. Derved tilordnes hver lagerbeholder fortrinnsvis et ballastrom, som er koplet til lagerbeholderen via en reguleringsinnretning. Ved iasting eller lossing av lageranlegget kan det så skje samtidig tbmming hhv. fylling av ballastrommene, slik at flytestiIlingen til enhver tid forblir uendret uten at dette krever jevn lastning hhv. lossing av alle lagerbeholdere. met divided into a plurality of ballast rooms. Thereby, each storage container is preferably assigned a ballast room, which is connected to the storage container via a regulation device. When loading or unloading the storage facility, tbmming or filling of the ballast compartments, so that the buoyancy remains unchanged at all times without this requiring uniform loading or unloading of all storage containers.

Innenfor de enkelte ballastrom er det anordnet stottevegger Retaining walls are arranged within the individual ballast rooms

med passasjer, som gir konstruksjonen den nodvendige stabilitet. with passages, which give the construction the necessary stability.

Ballastsystemet er med fordel tilgjengelig fra arbeidsplattformen via minst en soyle som bærer arbeidsplattformen. I soylen er det anordnet sjakter, ved hjelp av hvilke pumpene for ballast-vannet er tilgjengelige fra arbeidsplattformen ved hjelp av en lofteanordning. Dessuten kan det foreligge ytterligere sjakter som gjor ballastsystemet tilgjengelig for betjeningspersonale. The ballast system is advantageously accessible from the work platform via at least one pillar that supports the work platform. Shafts are arranged in the soil, by means of which the pumps for the ballast water are accessible from the working platform by means of an overhead device. In addition, there may be additional shafts that make the ballast system accessible to operating personnel.

Ballastsystemet består ved en gunstig utforelse av en plan basisplate, som har lukkede begrensningsvegger og hulrom i det indre. På den horisontale overflate av denne konstruksjon er lagerbeholderne og arbeidsplattformen anordnet. The ballast system consists in a favorable embodiment of a flat base plate, which has closed boundary walls and cavities in the interior. On the horizontal surface of this structure, the storage containers and the working platform are arranged.

Ved en annen fordelaktig utforelse er lagerbeholderne ikke anordnet på en horisontal begrensningsflate for ballastsystemet. Denne overflate er derimot forsynt med uttagninger, hvor nedre del av lagerbeholderne rager inn. Ved en slik utformning er ballastrommene således delvis anordnet under og delvis rundt lagerbeholderne. Derved kan det ved uforandret kapasitet av la-gerrommene og ballastrommene oppnås lavere dypgående av anlegget. In another advantageous embodiment, the storage containers are not arranged on a horizontal limiting surface for the ballast system. This surface, on the other hand, is provided with recesses, where the lower part of the storage containers protrudes. With such a design, the ballast rooms are thus partly arranged under and partly around the storage containers. Thereby, with unchanged capacity of the storage rooms and ballast rooms, a lower draft of the facility can be achieved.

Lageranlegg ifolge oppfinnelsen benyttes med spesiell fordel Storage facilities according to the invention are used with particular advantage

for lagring av flytendegjort gass med lavt kokepunkt. De forde-ler som oppnås ved konstruksjonsprinsippet ifolge oppfinnelsen, fremtrer særlig tydelig ved en slik anvendelse. Lagerbeholdernes overflate kan nemlig på en enkel måte forsynes med en konvensjonell varmeisolasjon, uten at det kreves ekstra isolasjon for sjakter, som forloper gjennom lagerbeholderen til ballastsystemet. Derved vil et ytterligere problem som opptrer ved kjente utforelser, nem-lig oppvarmingen av vegger som utsettes for lave temperaturer, overhodet ikke være aktuelt. Ved de kjente utforelser må det med en omfattende varmeanordrring sbr-ges for at veggene, som vanligvis består av betong, ikke avkjo-les til temperaturer, hvor konstruksjonens stabilitet er i fare. En slik avkjoling kan nemlig ikke hindres helt, selv ved god varmeisolasjon av lagerbeholderne. ved foreliggende anlegg kan derimot bare yttervegger avkjbles ved de uunngåelige kuldetap. for the storage of liquefied gas with a low boiling point. The advantages achieved by the construction principle according to the invention appear particularly clearly in such an application. The surface of the storage containers can be provided in a simple way with conventional thermal insulation, without requiring additional insulation for shafts, which run through the storage container to the ballast system. Thereby, a further problem which occurs with known designs, namely the heating of walls which are exposed to low temperatures, will not be relevant at all. In the known embodiments, an extensive heating device must be used to ensure that the walls, which usually consist of concrete, do not cool down to temperatures where the stability of the structure is at risk. Such cooling cannot be completely prevented, even with good thermal insulation of the storage containers. on the other hand, in the case of the current system, only the outer walls can be disconnected due to the inevitable cold losses.

Men ytterveggene spyles av sjbvannet og "holdes dermed til stadighet på omgivelsestemperatur. Inni lagerbeholderne foreligger det ingen vegger som krever oppvarming. But the outer walls are washed by the seawater and are thus constantly kept at ambient temperature. Inside the storage containers, there are no walls that require heating.

Ved en annen utformning av oppfinnelsen kan ballastsystemet være dimensjonert slik at lageranlegget står på havbunnen i enhver lastetilstand. Ved en slik anvendelse, som dog bare er mulig ved ikke for store vanndyp, oppnås en stabil stilling av lageranlegget, slik at en ved fylling hhv. tomming kan unnvære likevektsregulering via ballastsystemet. In another design of the invention, the ballast system can be dimensioned so that the storage facility stands on the seabed in any load condition. With such an application, which is however only possible with not too great water depths, a stable position of the storage facility is achieved, so that when filling or emptying can dispense with equilibrium regulation via the ballast system.

Ytterligere utformninger av oppfinnelsen vil bli nærmere omtalt nedenfor under henvisning til noen utfdrelseseksempler som er skjematisk gjengitt i tegningen, hvor Further designs of the invention will be discussed in more detail below with reference to some examples of implementation which are schematically reproduced in the drawing, where

fig. 1 viser et horisontalsnitt gjennom et lageranlegg ifolge oppfinnelsen i samme nivå som linjen I-l i fig. 12, fig. 1 shows a horizontal section through a storage facility according to the invention at the same level as the line I-1 in fig. 12,

fig. 2 viser et vertikalsnitt gjennom samme lageranlegg etter linjen II-II i fig. 1, fig. 2 shows a vertical section through the same storage facility along the line II-II in fig. 1,

fig. 3 viser et horisontalsnitt i samme nivå som linjen III-III i fig. 4, fig. 3 shows a horizontal section at the same level as the line III-III in fig. 4,

fig. 4 er et vertikalsnitt gjennom samme lageranlegg som fig. fig. 4 is a vertical section through the same storage facility as fig.

3 viser, etter linjen IV-IV i fig. 3 og 3 shows, following the line IV-IV in fig. 3 and

fig. 5 er et snitt gjennom veggen av en lagerbeholder og en tank for et lageranlegg ifolge oppfinnelsen. fig. 5 is a section through the wall of a storage container and a tank for a storage facility according to the invention.

I fig. 1 og 2 er det vist et lageranlegg for flytendegjort naturgass, med fire kuleformede lagertanker 1. Lagerbeholderne 1 er lagret på den horisontale overflate 2 for en skiveformet fundamentplate 3. In fig. 1 and 2, a storage facility for liquefied natural gas is shown, with four spherical storage tanks 1. The storage containers 1 are stored on the horizontal surface 2 of a disk-shaped foundation plate 3.

Fundamentplaten 3 har horisontale og vertikale stottevegger 4 hhv. 5, som sikrer konstruksjonens stabilitet. I platen 3 er lageranleggets ballastsystem anordnet. For at fylling og tomming av ballastrommene skal muliggjores, er stotteveggene 4 og 5 forsynt kied åpninger for passasje av ballastvann. Dessuten er det anordnet vertikale vegger 6 uten passasjeåpninger, ved hjelp av hvilke fundamentplaten deles opp i atskilte ballastrom. Be-grensningsveggene 6 er anordnet slik at fundamentplaten 3 som er utformet som en sirkulær plate, deles opp i fire sirkelsek-torer, som hver ligger under en lagerbeholder 1. The foundation plate 3 has horizontal and vertical supporting walls 4, respectively. 5, which ensures the stability of the structure. In plate 3, the storage facility's ballast system is arranged. In order to enable the filling and emptying of the ballast spaces, the retaining walls 4 and 5 are provided with openings for the passage of ballast water. In addition, vertical walls 6 are arranged without passage openings, by means of which the foundation slab is divided into separate ballast spaces. The boundary walls 6 are arranged so that the foundation plate 3, which is designed as a circular plate, is divided into four circular sectors, each of which lies below a storage container 1.

Ballastsystemets enkelte ballastrom er tilgjengelige fra arbeidsplattformen 7 via sjakter 8. Sjaktene 8 forloper i vertikale stotter 9, ved hjelp av hvilke arbeidsplattformen 7 er lagret på fundamentplaten 3. Ved at stottene opprettes ovenfor begrensningsveggen 6 for to ballastrom, vil to atskilte ballastrom til enhver tid være tilgjengelige gjennom sjakter 8 i en stbtte 9. The ballast system's individual ballast rooms are accessible from the working platform 7 via shafts 8. The shafts 8 extend into vertical supports 9, with the help of which the working platform 7 is stored on the foundation plate 3. By creating the supports above the boundary wall 6 for two ballast rooms, two separate ballast rooms will at all times be accessible through shafts 8 in a stbtte 9.

På arbeidsplattformen er det anordnet et ikke vist laste/losse-system, ved hjelp av hvilket den lagrede, flytende naturgass kan avgis til tankskip. Videre omfatter arbeidsplattformen 7 anlegg for behandling og flytendegjoring av naturgassen, opp-holdsrom for betjeningspersonale, en landingsplass for helikop-ter og andre nodvendige innretninger. A loading/unloading system, not shown, is arranged on the work platform, with the help of which the stored liquid natural gas can be delivered to tankers. Furthermore, the work platform includes 7 facilities for processing and liquefaction of the natural gas, accommodation for operating personnel, a landing pad for helicopters and other necessary facilities.

Lagerbeholderne 1 er tilgjengelige fra arbeidsplattformen 7 via vertikale sjakter 10. I sjaktene 10 forloper ledningene for fylling hhv. tomming av flytendegjort naturgass samt gassled-ninger. Også de nedsenkbare pumper for transport av den lagrede væske kan ved hjelp av en lofteanordning i sjakten- 10 hentes opp til arbeidsplattformen 7 for reparasjon eller overhaling hhv. senkes ned i lagerbeholderne 1 igjen. Por at de nedsenkbare pumper skal få en sikker foring, er sjaktene IQ i lagerbeholderne 1 gitt en fortsettelse i form av sjakter 11, sem ender i lagerbeholdernes nedre område. Mens sjaktene 10 er utfort i betong og er trykkfaste, er sjaktene 11 i lagerbeholderne 1 fremstilt av et materiale som tåler lave temperaturer. The storage containers 1 are accessible from the work platform 7 via vertical shafts 10. In the shafts 10, the lines for filling or emptying of liquefied natural gas and gas lines. The submersible pumps for transporting the stored liquid can also be brought up to the work platform 7 with the help of a loft device in the shaft 10 for repair or overhaul or is lowered into the storage containers 1 again. In order for the submersible pumps to have a secure lining, the shafts IQ in the storage containers 1 are given a continuation in the form of shafts 11, which end in the lower area of the storage containers. While the shafts 10 are constructed in concrete and are pressure-resistant, the shafts 11 in the storage containers 1 are made of a material that can withstand low temperatures.

I fig. 3 og 4 er det vist et annet anlegg ifolge oppfinnelsen, som utelukkende er ment som. mellomlager for flytendegjort jordgass. På arbeidsplattformen 12 er det derfor bare behov for få konstruksjoner, i det vesentlige bare et overføringssystem til tankskip og de nodvendige anlegg for lasting og lossing av lagerbeholderne 10. Arbeidsplattformen 12 er derfor langt mindre enn i utfdrelseseksemplet som vist i fig. 1 og 2. Den avstottes på fundamentplaten 3 ved en sentral soyle 13, i hvilken forbindelsessjaktene 14 mellom arbeidsplattformen 12 og ballastsystemet er anordnet. In fig. 3 and 4 another plant according to the invention is shown, which is intended exclusively as. intermediate storage for liquefied natural gas. There is therefore only a need for a few structures on the work platform 12, essentially only a transfer system for tankers and the necessary facilities for loading and unloading the storage containers 10. The work platform 12 is therefore far smaller than in the example shown in fig. 1 and 2. It is supported on the foundation plate 3 by a central pillar 13, in which the connection shafts 14 between the work platform 12 and the ballast system are arranged.

Anlegget skiller seg dessuten fra det ovenfor omtalte ved utformningen av fundamentplaten 3. Denne er i overflaten utstyrt med skålformede uttagninger, som er tilpasset lagerbeholdernes 1 kuleform. Derved oppnås at ballastrommene ikke utelukkende er anordnet under lagerbeholderne 1, men også delvis omgir disse. Denne utformning av fundamentplaten 3 har den fordel at lageranlegget får mindre dypgående. For å hindre avkjoling av lagerbeholdernes 1 veggpartier som ligger i uttagningene, er det sbrget for et mellomrom mellom fundamentplatens 3 overflate og lagerbeholdernes 1 kant. Dette mellomrom gjennomstrømmes av sjbvann, slik at lagerbeholdernes 1 vegg til stadighet holdes på omgivelsestemperatur. The plant also differs from the one mentioned above in the design of the foundation plate 3. This is equipped on the surface with bowl-shaped recesses, which are adapted to the spherical shape of the storage containers 1. Thereby, it is achieved that the ballast rooms are not exclusively arranged under the storage containers 1, but also partially surround them. This design of the foundation plate 3 has the advantage that the storage facility has less depth. In order to prevent cooling of the wall parts of the storage containers 1 located in the recesses, a space is provided between the surface of the foundation plate 3 and the edge of the storage containers 1. This space is flowed through by running water, so that the 1 wall of the storage containers is constantly kept at ambient temperature.

For sikring av veggkjolingen er det i nederste del av uttagningen anordnet en passasje 21, gjennom hvilken vannet kan stromme ut og ned. Derved oppnås at avkjolt sjovann på grunn av sin hbyere spesifikke vekt vil stromme bort av seg selv, uten at det må To secure the wall cooling, a passage 21 is arranged in the lower part of the outlet, through which the water can flow out and down. Thereby it is achieved that, due to its higher specific weight, cooled water will flow away by itself, without having to

tas spesielle forholdsregler for å oppnå dette. special precautions are taken to achieve this.

En slik utformning av fundamentplaten 3 er også gunstig med hen-blikk på lagringen av lagerbeholderne 1. Denne opprettes her ik-ke lenger utelukkende i nedre anleggspunkt på fundamentplaten 3, men på flere punkter innenfor de skålformede uttagningene. Such a design of the foundation plate 3 is also favorable with regard to the storage of the storage containers 1. This is no longer created exclusively at the lower contact point on the foundation plate 3, but at several points within the bowl-shaped recesses.

Lagerbeholderne 1 er tilgjengelige fra arbeidsplattformen 12 via skrått forlopende sjakter 15. I lagerbeholderne 1 er sjaktene 15 fort gjennom en sjakt 16 av kuldebeståndig materiale helt ned til lagerbeholderens 1 bunnområde. For oppnåelse av en gunstig lagring av de nedsenkbare pumper som skal fores-ned gjennom sjaktene 15 og 16, er sjaktene 1-6 krummet slik at de ender vertikalt. The storage containers 1 are accessible from the work platform 12 via inclined shafts 15. In the storage containers 1, the shafts 15 are fast through a shaft 16 of cold-resistant material all the way down to the bottom area of the storage container 1. In order to achieve a favorable storage of the submersible pumps which are to be fed down through the shafts 15 and 16, the shafts 1-6 are curved so that they end vertically.

Lagerbeholderne 1 for anleggene ifolge oppfinnelsen består ved The storage containers 1 for the facilities according to the invention consist of wood

et påfyllingsvolum på 125 00a m av 4 kuletanker med en indre diameter på 40 m hver. i fig. 5 er det vist et snitt gjennom veggen for en slik lagerbeholder 1. Den består av en 1 m tykk, a filling volume of 125 00a m of 4 ball tanks with an inner diameter of 40 m each. in fig. 5 shows a section through the wall of such a storage container 1. It consists of a 1 m thick,

trykkfast yttervegg 17 av betong med et mellomrom 18 på ca. 0,75 m bredde i tilslutning^ Det er mulig å gå i dette mellomrom, slik at den trykkfaste vegg 17 også kan kontrolleres når anlegget er i bruk. Lekkasjevann som måtte piple gjennom veggen 17., samles i et dreneringssystem og fjernes ved hjelp av en pum-pe. pressure-resistant outer wall 17 of concrete with a space 18 of approx. 0.75 m width in connection^ It is possible to walk in this space, so that the pressure-resistant wall 17 can also be checked when the system is in use. Leakage water that had to trickle through the wall 17. is collected in a drainage system and removed with the help of a pump.

Den kuleformede tank består av metall 19 som blix seigt i kulde og er på utsiden omgitt av en 25 cm tykk varmeisolasjon 20. Tankens lagring i lagerbeholderen 1 kan gjennomfores på konvensjonell måte, f.eks. ved opplagring på et ringformet skjort, som er anbrakt -omtrent.på hoyde med tankens storste horisontale tverrsnitt. The spherical tank consists of metal 19 which is lightning tough in the cold and is surrounded on the outside by a 25 cm thick heat insulation 20. The storage of the tank in the storage container 1 can be carried out in a conventional way, e.g. when stored on a ring-shaped shirt, which is placed approximately at the height of the tank's largest horizontal cross-section.

Claims (4)

1. Flytende lageranlegg for væsker, med minst to lagerbeholderne (1), med et ballastsystem og med en arbeidsplattform (7, 12), samt med en forbindelsessjakt mellom arbeidsplattformen og ballastsystemet, idet arbeidsplattformen er anordnet ovenfor lagerbeholderne, hvorved lageranleggets oppdrift og vekt kan avstemmes slik ved fylling og tømming av ballastsystemet at lagerbeholderne (1) og ballastsystemet befinner seg under og arbeidsplattformen (7, 12) over vannflaten, karakterisert ved at arbeidsplattformen (7, 12) og Lagerbeholderne (1) er lagret uavhengig av hverandre på ballastsystemet.1. Floating storage facility for liquids, with at least two storage containers (1), with a ballast system and with a work platform (7, 12), as well as with a connecting shaft between the work platform and the ballast system, the work platform being arranged above the storage containers, whereby the storage facility's buoyancy and weight can is adjusted such that when filling and emptying the ballast system, the storage containers (1) and the ballast system are located below and the work platform (7, 12) above the water surface, characterized by the fact that the work platform (7, 12) and the storage containers (1) are stored independently of each other on the ballast system. 2. Lageranlegg som angitt i krav 1, karakterisert ved at hver lagerbeholder (1) står i forbindelse med arbeidsplattformen (7, 12) via en sjakt MO, 15).2. Storage facility as specified in claim 1, characterized in that each storage container (1) is connected to the work platform (7, 12) via a shaft MO, 15). 3. Lageranlegg som angitt i krav 1 eller 2, karakterisert ved at ballastsystemet er tilgjengelig fra arbeidsplattformen (7, 12) via minst én søyle (9, 13) som bærer arbeidsplattformen (7, 12).3. Storage facility as stated in claim 1 or 2, characterized in that the ballast system is accessible from the work platform (7, 12) via at least one column (9, 13) which supports the work platform (7, 12). 4. Lageranlegg som angitt i et av kravene 1 - 3, karakterisert ved at ballastsystemet er anordnet i en fundamentplate (3) som omslutter det nedre parti av lagerbeholderne (1).4. Storage facility as specified in one of claims 1 - 3, characterized in that the ballast system is arranged in a foundation plate (3) which encloses the lower part of the storage containers (1).
NO791099A 1978-04-03 1979-04-02 LIQUID LIQUID STORAGE NO150630C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782814314 DE2814314A1 (en) 1978-04-03 1978-04-03 FLOATING STORAGE SYSTEM FOR LIQUIDS

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NO791099L NO791099L (en) 1979-10-04
NO150630B true NO150630B (en) 1984-08-13
NO150630C NO150630C (en) 1984-11-21

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025619A1 (en) * 1980-07-05 1982-02-04 Dyckerhoff & Widmann AG, 8000 München Double=walled liquefied gas vessel - has inner and outer vessels continuously curved in side view
FR2503919B1 (en) * 1981-03-26 1985-07-19 Severs Stephen STRUCTURE FOR AN UNDERWATER NUCLEAR POWER PLANT
JPS58218489A (en) * 1982-06-15 1983-12-19 Mihara Gijutsu Kenkyusho:Kk Construction of ship body of tanker or the like
GB2296686A (en) * 1994-11-12 1996-07-10 Mp Storage of production fluids from undersea oil deposits or reservoirs
FR2849073B1 (en) * 2002-12-23 2005-10-07 Coflexip INSTALLATION OF SUB-MARINE STORAGE OF A CRYOGENIC LIQUID

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GB2017592A (en) 1979-10-10
GB2017592B (en) 1982-07-14
NO791099L (en) 1979-10-04
DE2814314A1 (en) 1979-10-11

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