NO332484B1 - Pressure vessel - Google Patents

Pressure vessel Download PDF

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Publication number
NO332484B1
NO332484B1 NO20100481A NO20100481A NO332484B1 NO 332484 B1 NO332484 B1 NO 332484B1 NO 20100481 A NO20100481 A NO 20100481A NO 20100481 A NO20100481 A NO 20100481A NO 332484 B1 NO332484 B1 NO 332484B1
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NO
Norway
Prior art keywords
tank
beams
tank according
ribs
corners
Prior art date
Application number
NO20100481A
Other languages
Norwegian (no)
Other versions
NO20100481A1 (en
Inventor
Arne Barrett Sele
Original Assignee
Aker Engineering & Technology
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 Aker Engineering & Technology filed Critical Aker Engineering & Technology
Priority to NO20100481A priority Critical patent/NO332484B1/en
Priority to PCT/NO2011/000113 priority patent/WO2011122960A1/en
Publication of NO20100481A1 publication Critical patent/NO20100481A1/en
Publication of NO332484B1 publication Critical patent/NO332484B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/013—Reinforcing means in the vessel, e.g. columns
    • 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
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/012—Reducing weight
    • 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
    • F17C2270/0118—Offshore
    • F17C2270/0123—Terminals
    • 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
    • F17C2270/0134—Applications for fluid transport or storage placed above the ground
    • F17C2270/0136—Terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention provides a prismatic tank for storing fluid under pressure, the tank comprises external plates, forming at least part of a roof, wall or floor, and where at least part of the external plate comprises a sandwich structure and comprising an internal structure formed as a tension support and/or anchoring for the external plates. Said tank has tension stays in three perpendicular directions which allow internal pressure to be confined.

Description

TRYKKBEHOLDER PRESSURE CONTAINER

Oppfinnelsens tekniske område Technical field of the invention

Den foreliggende oppfinnelsen angår tanker for lagring og transport av fluider under trykk slik som hydrokarboner og lavtemperatur naturgass på væskeform. The present invention relates to tanks for the storage and transport of fluids under pressure such as hydrocarbons and low-temperature natural gas in liquid form.

Bakgrunnen for oppfinnelsen The background of the invention

Trykkbeholdere kan i teorien ha nesten enhver form, men former lagd av seksjoner fra kuler, sylindere, og konuser blir vanligvis anvendt. En vanlig utforming er en sylinder med endestykker som kalles hoder ("heads"). Formen på disse hodene er ofte enten halvkuleformede eller konkave (torisfæriske). En kule ville vært den optimale formen på en trykkbeholder med hensyn til å oppta trykklast. Imidlertid er en sfærisk utforming vanskelig å fremstille, derfor kostbar, og i tilfelle av transport er den ikke effektiv for å utnytte tilgjengelig volum hos et transportfartøy. Pressure vessels can in theory have almost any shape, but shapes made from sections from spheres, cylinders, and cones are commonly used. A common design is a cylinder with end pieces called heads. The shape of these heads is often either hemispherical or concave (torispherical). A sphere would be the optimal shape of a pressure vessel in terms of accommodating pressure loads. However, a spherical design is difficult to manufacture, therefore expensive, and in the case of transport, it is not effective in utilizing the available volume of a transport vessel.

WO 2006/001711 A2 beskriver prismatiske tanker lagd av et skall i form av en sandwich-struktur omfattende to overflate-paneier av metall, eller et materiale med liknende egenskaper, og en kjerne mellom overflate-pa neiene som overfører last mellom panelene, omfattende et materiale sånn som gysemasse, eller et sett med ribber eller støtteprofiler som strekker seg mellom de to panelene, forankret ved vinkelrette horisontale strekkbjelker. Dette er den nåværende teknologien for tanker med en sandwich-konstruksjon. WO 2006/001711 A2 describes prismatic tanks made of a shell in the form of a sandwich structure comprising two surface panels of metal, or a material with similar properties, and a core between the surface panels which transfers load between the panels, comprising a material such as kerosene, or a set of ribs or support profiles extending between the two panels, anchored by perpendicular horizontal tension beams. This is the current technology for tanks with a sandwich construction.

Denne strukturen tilveiebringer en dobbel, væsketett, barriere og gir muligheten for å detektere gass i mellom de to overflate-panelene så vel som å tillate trykktesting av hulrommet mellom panelene. Dette tilveiebringer forbedret sikkerhet, men den viktigste fordelen til sandwich-konstruksjonen er at den er strukturelt veldig effektiv. Skallet til nevnte tanker er forankret ved vinkelrette horisontale strekkbjelker, og er ikke egnet for lagring eller transport av fluider under trykk. This structure provides a double liquid-tight barrier and provides the ability to detect gas in between the two surface panels as well as allowing pressure testing of the cavity between the panels. This provides improved safety, but the main advantage of the sandwich construction is that it is structurally very efficient. The shell of said tanks is anchored by perpendicular horizontal tension beams, and is not suitable for storing or transporting fluids under pressure.

Fra det overstående er det klart at det eksisterer et behov for trykktanker som er enkle å fremstille, og som effektivt utnytter det tilgjengelige rommet i et transportfartøy. From the above it is clear that there is a need for pressure tanks which are easy to manufacture and which effectively utilize the available space in a transport vessel.

Formål for oppfinnelsen Purpose of the invention

Formålet til den foreliggende oppfinnelsen er å tilveiebringe en løsning som muliggjør anvendelsen av tanker, for eksempel tanker som beskrevet i WO 2006/001711 A2, som trykkbeholdere. The purpose of the present invention is to provide a solution which enables the use of tanks, for example tanks as described in WO 2006/001711 A2, as pressure vessels.

Sammendrag av oppfinnelsen Summary of the invention

Den foreliggende oppfinnelsen tilveiebringer en tank for å lagre fluid under trykk, omfattende anordninger for å støtte tanken som tillater termisk sammentrekning og ekspansjon av tanken, hvis tank omfatter eksterne plater, som danner i det minste en del av et tak, vegg eller gulv, og hvor minst en del av den eksterne platen omfatter en sandwich-struktur og omfattende en intern struktur formet som en spenningsstøtte og/eller forankring for de eksterne platene. Nevnte tank har strekkbjelker i tre vinkelrette retninger som tillater internt trykk å bli innestengt. The present invention provides a tank for storing fluid under pressure, comprising means for supporting the tank allowing thermal contraction and expansion of the tank, the tank comprising external plates, forming at least part of a roof, wall or floor, and where at least part of the external plate comprises a sandwich structure and comprising an internal structure shaped as a tension support and/or anchoring for the external plates. Said tank has tension beams in three perpendicular directions which allow internal pressure to be trapped.

Strekkbjelkene er fortrinnsvis konstruert av bjelker som har et H-formet tverrsnitt. The tensile beams are preferably constructed of beams that have an H-shaped cross-section.

I en utførelsesform av oppfinnelsen omfatter den prismatiske tanken strekkbjelker som er knyttet sammen, fortrinnsvis ved hjelp av braketter. In one embodiment of the invention, the prismatic tank comprises tensile beams which are connected together, preferably by means of brackets.

I en utførelsesform av oppfinnelsen omfatter sandwich-strukturen til tanken elementer som har en stiv og en fleksibel seksjon. In one embodiment of the invention, the sandwich structure of the tank comprises elements that have a rigid and a flexible section.

I en utførelsesform av oppfinnelsen har elementen til sandwich-strukturen til tanken en ekstern ribb for innfesting til strekkbjelkene. In one embodiment of the invention, the element of the sandwich structure of the tank has an external rib for attachment to the tensile beams.

I en utførelsesform av oppfinnelsen blir innfestingen av den eksterne ribben til strekkbjelkene gjort ved metoder for å forankre nevnte strekkbjelker til braketter sveiset til ribben. In one embodiment of the invention, the attachment of the external rib to the tension beams is done by methods for anchoring said tension beams to brackets welded to the rib.

I en utførelsesform av oppfinnelsen er nevnte ribb hovedsakelig T-formet. In one embodiment of the invention, said rib is mainly T-shaped.

I en utførelsesform av oppfinnelsen blir plater festet til ribbene for å forsterke hjørnene til tanken hvor ribbene er parallelle til hjørnene. In one embodiment of the invention, plates are attached to the ribs to reinforce the corners of the tank where the ribs are parallel to the corners.

I en utførelsesform av oppfinnelsen blir braketter festet til ribbene for å forsterke hjørnene til tanken hvor ribbene er vinkelrette til hjørnene. In one embodiment of the invention, brackets are attached to the ribs to reinforce the corners of the tank where the ribs are perpendicular to the corners.

Ved å konstruere et skall konstruert av dobbelt-platede paneler forankret ved vinkelrette horisontale strekkbjelker, så vel som vertikale strekkbjelker for å utbalansere trykklastene, har en beholder egnet for lagring og transport av fluider under trykk slik som hydrokarboner og lavtemperatur naturgass på væskeform blitt oppnådd. Beholderen kan også inkludere steg ram mer for å motstå ubalanserte "racking loads". Sandwich-veggene, -gulvet og -taket til beholderen ifølge oppfinnelsen omfatter paneler fortrinnsvis lagd av ekstruderte bjelkeelementer. By constructing a shell constructed of double-plate panels anchored by perpendicular horizontal tension beams, as well as vertical tension beams to balance the pressure loads, a vessel suitable for the storage and transportation of pressurized fluids such as hydrocarbons and low-temperature natural gas in liquid form has been achieved. The container can also include step ram more to withstand unbalanced "racking loads". The sandwich walls, floor and roof of the container according to the invention comprise panels preferably made of extruded beam elements.

Strekkbjelker tilveiebringer også en metode ved hvilken sloshing-krefter grunnet jordskjelv eller bølgelast kan dempes. Tensile beams also provide a method by which sloshing forces due to earthquakes or wave loads can be mitigated.

Kort beskrivelse av tegningene Brief description of the drawings

Ytterligere detaljer ved oppfinnelsen er beskrevet under med referanse til de eksemplifiserende utførelsesformene vist skjematisk i de vedlagte tegninger, hvori: Figur 1 viser et tverrsnitt av en utførelsesform av et ekstrudert bjelkeelement anvendt i konstruksjonen av de dobbelt-platede panelene som utgjør det eksterne skallet til trykktanken. Figur 2 viser en isometrisk tegning av en hjørneseksjon til en tank med strekkbjelker og braketter. Figur 3 viser en isometrisk tegning av den indre strukturen til en trykktank. Further details of the invention are described below with reference to the exemplifying embodiments shown schematically in the attached drawings, in which: Figure 1 shows a cross-section of an embodiment of an extruded beam element used in the construction of the double-clad panels that make up the external shell of the pressure tank . Figure 2 shows an isometric drawing of a corner section of a tank with tensile beams and brackets. Figure 3 shows an isometric drawing of the internal structure of a pressure tank.

Detaljert beskrivelse av tegningene Detailed description of the drawings

Figur 1 viser et tverrsnitt av en utførelsesform av et ekstrudert bjelkeelement anvendt i konstruksjon av de dobbelt-platede panelene som utgjør det eksterne skallet til trykktanken. Et mønster av triangulerte plater kombinert med alternerende seksjoner med platesammenkoblinger tilveiebringer en sandwich-struktur. Den triangulerte seksjonen til det ekstruderte bjelkeelementet inkluderer horisontale flenseplater 5, skråstilte plater 1 så vel som vertikale plater 3. Seksjoner av ekstruderingen består av kun horisontale flenseplater 2. Ekstruderingen inkluderer også en ribb 4 som har en liten flens. Ribben tilveiebringer en metode for å feste braketter 8 ved sveising, til hvilke braketter strekkbjelker 6 kan bli innfestet. Den lille flensen på ribben 4 tilveiebringer en metode for å styre automatisk sveiseutstyr. Figur 2 viser en isometrisk tegning av en hjørneseksjon til en trykktank ifølge oppfinnelsen. Strekkbjelker 6 befinner seg i form av en H-ekstrudering og er festet til ribber plassert på de ekstruderte bjelkeelementene 9 med braketter 8. Smidde hjørnebraketter 7 er også festet til ribbene til bjelkeelementene 9. Der hvor ribbene til bjelkeelementene er parallelle med hjørnene, er plater 10 festet til ribbene for å forsterke hjørnene. Strekkbjelkene 6 er konstruert i en matriks konstruert av vinkelrette horisontale og vertikale H-ekstruderinger. Ved å ha både horisontale og vertikale strekkbjelker er skallet til tanken i stand til å balansere trykklast i alle retninger. Strekkbjelkene 6 kan også være sammenkoblet ved å bruke for eksempel boltede eller sveisede braketter. Figur 3 viser en perspektivtegning av den indre strukturen, inkludert strekkbjelker så vel som braketter og plater som forsterker hjørnene. Figure 1 shows a cross-section of an embodiment of an extruded beam element used in the construction of the double-clad panels which form the external shell of the pressure tank. A pattern of triangulated plates combined with alternating sections of plate interconnects provides a sandwich structure. The triangulated section of the extruded beam member includes horizontal flange plates 5, inclined plates 1 as well as vertical plates 3. Sections of the extrusion consist of only horizontal flange plates 2. The extrusion also includes a rib 4 which has a small flange. The rib provides a method of attaching brackets 8 by welding, to which brackets tensile beams 6 can be attached. The small flange on rib 4 provides a method of controlling automatic welding equipment. Figure 2 shows an isometric drawing of a corner section of a pressure tank according to the invention. Tensile beams 6 are in the form of an H-extrusion and are attached to ribs placed on the extruded beam elements 9 with brackets 8. Forged corner brackets 7 are also attached to the ribs of the beam elements 9. Where the ribs of the beam elements are parallel to the corners, plates 10 attached to the ribs to reinforce the corners. The tensile beams 6 are constructed in a matrix constructed of perpendicular horizontal and vertical H-extrusions. By having both horizontal and vertical tension beams, the shell of the tank is able to balance pressure loads in all directions. The tensile beams 6 can also be connected by using, for example, bolted or welded brackets. Figure 3 shows a perspective drawing of the internal structure, including tension beams as well as brackets and plates that reinforce the corners.

Det er forstått at oppfinnelsen ikke er begrenset til de spesifikke utførelsesformene vist i tegningene og beskrevet over, men omfatter alle andre modifikasjoner og varianter innen omfanget av de vedlagte krav. It is understood that the invention is not limited to the specific embodiments shown in the drawings and described above, but includes all other modifications and variants within the scope of the appended claims.

Det dobbeltplatede ytre skallet til tanken, også beskrevet som en sandwich-struktur, er beskrevet å være konstruert av bjelkeelementer som vist i figur 1. Andre bjelkeelementer, kjent i teknikken for konstruksjon av sandwich-strukturer, kan også bli anvendt i konstruksjonen av skall egnet for tanker ifølge den foreliggende oppfinnelsen. The double-plate outer shell of the tank, also described as a sandwich structure, is described to be constructed of beam elements as shown in figure 1. Other beam elements, known in the art for the construction of sandwich structures, can also be used in the construction of shells suitable for tanks according to the present invention.

Claims (9)

1. En tank for å lagre fluid under trykk, omfattende midler for å støtte tanken som tar hensyn til termisk sammentrekning og utvidelse av tanken, hvis tank omfatter eksterne plater (9), som danner i det minste del av et tak, vegg eller gulv, og hvor i det minste deler av de eksterne platene (9) omfatter en sandwich-struktur og omfattende en intern struktur formet som en spenningsstøtte og/eller forankring for de eksterne platene,karakterisert vedå ha strekkbjelker (6) i tre vinkelrette retninger som tillater internt trykk å være innestengt.1. A tank for storing fluid under pressure, comprising means for supporting the tank that takes into account thermal contraction and expansion of the tank, the tank comprising external plates (9), forming at least part of a roof, wall or floor , and where at least parts of the external plates (9) comprise a sandwich structure and comprising an internal structure shaped as a tension support and/or anchoring for the external plates, characterized by having tensile beams (6) in three perpendicular directions which allow internal pressure to be confined. 2. En tank ifølge krav 1, hvori strekkbjelkene (6) er konstruert av bjelker som har et H-formet tverrsnitt.2. A tank according to claim 1, in which the tensile beams (6) are constructed of beams having an H-shaped cross-section. 3. En tank ifølge krav 1 or 2, hvori strekkbjelkene (6) er sammenkoblet, fortrinnsvis ved hjelp av braketter.3. A tank according to claim 1 or 2, in which the tensile beams (6) are connected, preferably by means of brackets. 4. En tank ifølge ethvert av de forutgående krav, hvori sandwich-strukturen omfatter elementer som har en stiv (1,3,5) og en fleksibel (2) seksjon.4. A tank according to any of the preceding claims, wherein the sandwich structure comprises elements having a rigid (1,3,5) and a flexible (2) section. 5. En tank ifølge krav 4, hvori nevnte elementer (1-5) har en ekstern ribb (4) for tilknytning til nevnte strekkbjelker (6).5. A tank according to claim 4, in which said elements (1-5) have an external rib (4) for connection to said tensile beams (6). 6. En tank ifølge krav 5, hvori tilknytningen blir gjort ved å forankre nevnte strekkbjelker (6) til braketter (8) sveiset til ribben (4).6. A tank according to claim 5, in which the attachment is made by anchoring said tensile beams (6) to brackets (8) welded to the rib (4). 7. En tank ifølge krav 5 eller 6, hvori nevnte ribb (4) er hovedsakelig T-formet.7. A tank according to claim 5 or 6, in which said rib (4) is mainly T-shaped. 8. En tank ifølge ethvert av kravene 5-7, hvori plater (10) er festet til ribbene (4) for å forsterke hjørnene hvor ribbene er parallelle til hjørnene.8. A tank according to any one of claims 5-7, in which plates (10) are attached to the ribs (4) to reinforce the corners where the ribs are parallel to the corners. 9. En tank ifølge ethvert av kravene 5-8, hvori braketter (7) er festet til ribbene (4) for å forsterke hjørnene hvor ribbene er vinkelrette til hjørnene.9. A tank according to any one of claims 5-8, in which brackets (7) are attached to the ribs (4) to reinforce the corners where the ribs are perpendicular to the corners.
NO20100481A 2010-03-31 2010-03-31 Pressure vessel NO332484B1 (en)

Priority Applications (2)

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NO20100481A NO332484B1 (en) 2010-03-31 2010-03-31 Pressure vessel
PCT/NO2011/000113 WO2011122960A1 (en) 2010-03-31 2011-03-31 Pressure vessel

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NO332484B1 true NO332484B1 (en) 2012-10-01

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Publication number Priority date Publication date Assignee Title
US1864931A (en) * 1930-03-13 1932-06-28 Clifford M Pritchard Tank construction
FR1463859A (en) * 1965-07-13 1966-07-22 Dubigeon Normandie Sa Aplexic or quasi-aplexic multi-cellular volume structures under uniform pressure
FR96255E (en) * 1965-12-16 1972-06-16 Rodrigues Edouard Georges Dani Manufacturing process of reservoirs and reservoirs thus obtained.
DE2554717A1 (en) * 1975-12-05 1977-06-08 Erhard Ing Grad Joos Pressure vessel for storing fluids - has walls formed from a series of curved elements welded together
US6732881B1 (en) * 1998-10-15 2004-05-11 Mobil Oil Corporation Liquefied gas storage tank
NO20042702D0 (en) 2004-06-25 2004-06-25 Det Norske Veritas As Cellular tanks for storage of fluids at tow temperatures, and cell structure for use in a tank

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