NO336727B1 - An arrangement for storage of a twin tank - Google Patents
An arrangement for storage of a twin tankInfo
- Publication number
- NO336727B1 NO336727B1 NO20131266A NO20131266A NO336727B1 NO 336727 B1 NO336727 B1 NO 336727B1 NO 20131266 A NO20131266 A NO 20131266A NO 20131266 A NO20131266 A NO 20131266A NO 336727 B1 NO336727 B1 NO 336727B1
- Authority
- NO
- Norway
- Prior art keywords
- arrangement
- plate
- shells
- accordance
- welded
- Prior art date
Links
- 210000003127 knee Anatomy 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 235000000396 iron Nutrition 0.000 claims 1
- 238000009827 uniform distribution Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000003949 liquefied natural gas Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000003351 stiffener Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/002—Storage in barges or on ships
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0147—Shape complex
- F17C2201/0152—Lobes
-
- 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
- F17C2201/0166—Shape complex divided in several chambers
-
- 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
- F17C2201/03—Orientation
- F17C2201/035—Orientation with substantially horizontal main axis
-
- 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
- F17C2203/06—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
- F17C2203/0639—Steels
- F17C2203/0643—Stainless steels
-
- 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
- F17C2203/0646—Aluminium
-
- 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
- F17C2203/0648—Alloys or compositions of 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
- 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
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/01—Mounting arrangements
- F17C2205/0153—Details of mounting arrangements
- F17C2205/0192—Details of mounting arrangements with external bearing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/232—Manufacturing of particular parts or at special locations of 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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catching Or Destruction (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
Foreliggende oppfinnelse vedrører transport av flytendegjorte gasser om bord i The present invention relates to the transport of liquefied gases on board i
skip, og inkludert naturgass (LNG) og petroleumsgasser (LPG), nærmere bestemt et arrangement for opplagring av en tvillingtank som angitt i innledningen av krav 1. Et arrangement av denne type er vist i EP 1945498. ship, and including natural gas (LNG) and petroleum gases (LPG), more specifically an arrangement for the storage of a twin tank as stated in the preamble of claim 1. An arrangement of this type is shown in EP 1945498.
Flytendegjorte gasser blir transportert i store volumer på skip, og disse Liquefied gases are transported in large volumes on ships, and these
spesialiserte gass-skip er av forskjellig type og størrelse. specialized gas vessels are of different types and sizes.
Sylindriske tvillingtanker blir anvendt for visse typer av last om bord i visse typer Cylindrical twin tanks are used for certain types of cargo on board certain types
av gass-skip, og hittil mest for transport av LPG og etylen. of gas ships, and so far mostly for the transport of LPG and ethylene.
En sylindrisk tvillingtank er sammensatt av to like og partielle sylindriske tanker A cylindrical twin tank is composed of two identical and partial cylindrical tanks
bygget inn i hverandre, og det felles skillepartiet utgjøres vanligvis av et perforert skott. built into each other, and the common partition usually consists of a perforated bulkhead.
Alternative materialer i en slik tvillingtank må være i stand til å tåle lave Alternative materials in such a twin tank must be able to withstand low
temperaturer, og kan for eksempel være rustfritt stål, nickel-legerte stål, temperatures, and can for example be stainless steel, nickel-alloyed steel,
aluminium, etc. aluminum, etc.
I de senere år har sylindriske tvillingtanker blitt anvendt for noen mindre skip for transport av flytende naturgass (LNG), og da ved en temperatur på - 163 °C. In recent years, twin cylindrical tanks have been used for some smaller ships for the transport of liquefied natural gas (LNG), and then at a temperature of - 163 °C.
Tvillingtanker er gunstig og fordelaktig for anvendelse om bord i gass-skip på grunn Twin tanks are favorable and beneficial for use on board gas ships on ground
av god utnyttelse av volumet til det omgivende skroget sammenlignet med bruk av ordinære sylindriske tanker av samme volum. of good utilization of the volume of the surrounding hull compared to the use of ordinary cylindrical tanks of the same volume.
Dessuten har tvillingtanker et attraktivt forhold mellom overflate og volum av Also, twin tanks have an attractive surface-to-volume ratio
tankene, og følgelig mindre varmelekkasje til tanken enn for to ordinære sylindertanker med samme totale volum. the tanks, and consequently less heat leakage to the tank than for two ordinary cylinder tanks with the same total volume.
Transport av LNG i tvillingtanker er litt mer utfordrende på grunn av større Transporting LNG in twin tanks is slightly more challenging due to larger
kontraksjon og ekspansjon av lastetankene på grunn av den lave temperatur av lasten (-163 °C), og spesielt for tvillingtanker med større diameter og volum. contraction and expansion of the cargo tanks due to the low temperature of the cargo (-163 °C), and especially for twin tanks of larger diameter and volume.
I virkeligheten kan det fremherskende systemet for opplagring av tvillingtanker bli In reality, the prevailing system of storage of twin tanks may become
umulig å bruke for en tvillingtank med betydelig større diameter enn hittil anvendt, impossible to use for a twin tank with a significantly larger diameter than previously used,
og kan være en begrensning for bruk av middelstore og store tvillingtanker for transport av LNG og også etylen ved - 104 °C. and may be a limitation for the use of medium and large twin tanks for the transport of LNG and also ethylene at - 104 °C.
Fig. 1 viser et typisk eksisterende opplagringssystem for tvillingtanker. Fig. 1 shows a typical existing storage system for twin tanks.
Tvillingtanker er normalt arrangert i skipenes langskipsretning, og Fig. 1 viser et tverrskipssnitt ved en eksisterende type opplager for en tvillingtank. Twin tanks are normally arranged in the ship's longitudinal direction, and Fig. 1 shows a cross-ship section of an existing type of storage for a twin tank.
Hver tvillingtank er normalt understøttet i to sadel-opplagringer (og hvorav én er Each twin tank is normally supported in two saddle bearings (and one of which is
vist i Fig.l). shown in Fig.l).
Fig. 1 viser følgende detaljer: Fig. 1 shows the following details:
(1) er det omgivende skipsskrog (1) is the surrounding hull
(2) er skipets dobbeltbunnplate (2) is the ship's double bottom plate
(3) er tvillingtanken (3) is the twin tank
(4) er den innvendige forsterkning av tvillingtanken ved opplagrene, og består av en ringstiver med flens (4) is the internal reinforcement of the twin tank at the bearings, and consists of a ring stiffener with a flange
(5) er det perforerte skott mellom hver halvdel av tvillingtanken (5) is the perforated bulkhead between each half of the twin tank
(6) er opplagringssystemet av stål, og inkluderer sadeler for overføring av statiske og dynamiske krefter fra tvillingtanken til stålstrukturen av det omgivende skroget. (6) is the steel support system, and includes saddles for transferring static and dynamic forces from the twin tank to the steel structure of the surrounding hull.
(7) er isolasjon av kalde overflater på tvillingtanken (delvis vist) (7) is insulation of cold surfaces of the twin tank (partially shown)
(8) er et lastbærende og termisk isolerende materiale med tilstrekkelig styrke til å bære og overføre de (8) is a load-bearing and thermally insulating material with sufficient strength to carry and transfer them
statiske og dynamiske kreftene fra tvillingtanken til det omgivende skroget, og arrangert som et mellomlegg mellom sadelopplagringen av stål (6) og skallet (3) av tvillingtanken. static and dynamic forces from the twin tank to the surrounding hull, and arranged as a spacer between the steel saddle bearing (6) and the shell (3) of the twin tank.
Det lastbærende og isolerende mellomlegget vil normalt være av et industrielt, komprimert tremateriale, og med nødvendige egenskaper for styrke og termisk isolasjon. The load-bearing and insulating interlayer will normally be made of an industrial, compressed wood material, and with the necessary properties for strength and thermal insulation.
(9) er felles vertikal senterlinje for skip og tvillingtank. (9) is the common vertical centerline of ship and twin tank.
(10) er vertikal senterlinje for babord side (sett bakfra) av tvillingtank. (10) is vertical centerline for port side (viewed from behind) of twin tank.
(11) er vertikal senterlinje av styrbord side (sett bakfra) av tvillingtank. (11) is vertical centerline of starboard side (viewed from behind) of twin tank.
Når nedkjøling starter vil tvillingtanken (3) begynne å trekke seg sammen mot den felles senterlinje (9). When cooling starts, the twin tank (3) will begin to contract towards the common center line (9).
På grunn av opplagringens utførelse vil tvillingtanken bli «hengende» i opplagrings-toppen i senterlinjen (9), mens resterende deler av tankens underside (styrbord og babord) utenfor dette skilleområdet vil i det minste teoretisk kunne miste den vertikale kontakten med underlaget når den krymper. Due to the design of the storage, the twin tank will be "hanging" in the storage top in the center line (9), while remaining parts of the underside of the tank (starboard and port) outside this separation area will at least theoretically be able to lose vertical contact with the substrate when it shrinks .
Tvillingtanken vil da i prinsippet kunne oppføre seg som en dobbel kragbjelke, og betydelige skjærkrefter og bøyemomenter vil kunne bli introdusert i skillepartiet av tvillingtankstrukturen. The twin tank will then in principle be able to behave like a double collar beam, and significant shear forces and bending moments will be able to be introduced in the separating part of the twin tank structure.
Denne ulempe avhjelpes ifølge oppfinnelsen av et arrangement som definert i krav 1. According to the invention, this disadvantage is remedied by an arrangement as defined in claim 1.
Foreliggende oppfinnelse er vist i prinsippet på Fig.2, Fig. 3, og Fig.4, og vedrører anordninger for å unngå problemer som beskrevet ved opplagringen som vist i Fig.l. The present invention is shown in principle in Fig. 2, Fig. 3 and Fig. 4, and relates to devices to avoid problems as described in the storage as shown in Fig. 1.
Oppfinnelsen har som formål å unngå at tvillingtanken blir «hengende i opplagringstoppen» i senterlinjen (9) som vist på Fig. 1, og dette blir oppnådd ved at opplageret blir arrangert horisontalt mellom senterlinjene (10) og (11). The purpose of the invention is to avoid that the twin tank becomes "hanging in the storage top" in the center line (9) as shown in Fig. 1, and this is achieved by the storage being arranged horizontally between the center lines (10) and (11).
Dette blir oppnådd ved å introdusere en utvendig og isolert understøttelseskonstruksjoav samme materiale som s tvillingtanken, og arrangert som en integrert del av tvillingtanken. This is achieved by introducing an external and isolated support structure made of the same material as the twin tank, and arranged as an integral part of the twin tank.
Understøttelseskonstruksjonen for en tvillingtank består hovedsakelig av en vertikal og isolert plate (12) som er sveist til utvendig omkrets av tvillingtanken (3), og arrangert i samme vertikale plan som innvendig ringstiversystem (4) ved hvert opplager. The support structure for a twin tank consists mainly of a vertical and insulated plate (12) welded to the outer circumference of the twin tank (3), and arranged in the same vertical plane as the internal ring brace system (4) at each bearing.
Enn videre er en horisontal og isolert flensplate (13) sveist til den vertikale platen (12). Denne horisontale flensplaten (13) hviler på mellomlegget (8) på toppen av stålkonstruksjonen (6). Furthermore, a horizontal and insulated flange plate (13) is welded to the vertical plate (12). This horizontal flange plate (13) rests on the intermediate layer (8) on top of the steel structure (6).
Maksimum tverrskips utstrekning av vertikal opplagringsplate (12) kan være den samme som den horisontale avstanden mellom senterlinjene (10) og (11), men i praksis vil platebredden være i området minimum 20 % til maksimum 80 % av denne avstanden. The maximum transom extent of vertical storage plate (12) can be the same as the horizontal distance between the center lines (10) and (11), but in practice the plate width will be in the range of a minimum of 20% to a maximum of 80% of this distance.
Ettersom den vertikale platen (12) og den horisontale platen (13) er fullt isolert, vil temperaturen i disse platene være tilnærmet den samme som lastetemperaturen. As the vertical plate (12) and the horizontal plate (13) are fully insulated, the temperature in these plates will be approximately the same as the load temperature.
Ved denne beskrevne oppfinnelsen kan tvillingtanken fritt krympe eller ekspandere uten at det blir introdusert tilleggspåkjenninger og ugunstige spenninger på grunn av kontraksjon eller ekspansjon. With this described invention, the twin tank can freely shrink or expand without introducing additional stresses and adverse stresses due to contraction or expansion.
For tvillingtanker med store diametre/volumer kan det bli nødvendig å i å ha minst to innvendige ringstiver-plater (4) ved hver opplagring. I et slikt tilfelle må det arrangeres minst to (2) utvendige plater (12) ved hvert opplager, og arrangert i samme vertikale plan som innvendige ringstiver-plater (4). For twin tanks with large diameters/volumes, it may be necessary to have at least two internal ring stiffener plates (4) for each storage. In such a case, at least two (2) outer plates (12) must be arranged at each bearing, and arranged in the same vertical plane as the inner ring stiffener plates (4).
Uten «en opplagrings-topp i skillepartiet ved felles senterlinje (9)» som beskrevet, vil imidlertid tvillingtanken (3) i kald og krympet tilstand kunne skli tverrskips i sjøgang (i det minste teoretisk), enten til styrbord eller babord side ved rulling i sjøgang. However, without "a storage top in the dividing section at the common center line (9)" as described, the twin tank (3) in a cold and shrunken state would be able to slide transversely in the seaway (at least theoretically), either to the starboard or port side when rolling in sea walk.
For å eliminere en slik mulighet introduseres stopper-elementer (15) som vist på Fig.3. Stopper-elementene (15) er av samme materiale som mellom-legget (8), og er fast festet med bolter eller lignende til mellom-legget (8), og er omtrent av samme lengde som den flensplaten (13). To eliminate such a possibility, stopper elements (15) are introduced as shown in Fig.3. The stopper elements (15) are of the same material as the intermediate layer (8), and are fixed with bolts or the like to the intermediate layer (8), and are approximately the same length as the flange plate (13).
Enn videre er flattjern (14) som vist sveist til platekonstruksjonen (12,13), og på stopper-elementene (15) for jevn fordeling av tverrskips krefter. Furthermore, as shown, flat iron (14) is welded to the plate structure (12,13), and to the stopper elements (15) for even distribution of transom forces.
Dersom det viser seg å være nødvendig, kan isolerte kneplater introduseres i langskips retning på en eller begge sider av den vertikale platen (12), og sveist til denne platen (12) og til den horisontale platen (13). If it proves necessary, insulated knee plates can be introduced in the longship direction on one or both sides of the vertical plate (12), and welded to this plate (12) and to the horizontal plate (13).
I denne forbindelse kan stopper-elementene (15) som tidligere beskrevet, også bli arrangert i forbindelse med et slikt kneplate-system på den vertikale platen (12). In this connection, the stopper elements (15) as previously described, can also be arranged in connection with such a knee plate system on the vertical plate (12).
Den vertikale platen (12) kan gjerne konstrueres på en mer raffinert måte enn som vist på The vertical plate (12) can preferably be constructed in a more refined manner than shown
Fig.2 og Fig.3, og avslutningen av platen (12) mot periferien av tvilling-tanken (3) kan være mer snipet/avrundet. Fig.2 and Fig.3, and the termination of the plate (12) towards the periphery of the twin tank (3) can be more tapered/rounded.
En tilsvarende løsning for opplagring av en sylindrisk tvillingtank er vist på Fig.5. Hovedforskjellen mellom denne løsningen og den som er vist på Fig.l og Fig.2 er at understøttelsesområdet mellom senterlinjene (10,11) er tatt bort, og at omfanget av det termiske isolerende og lastbærende mellomlegget (8) er som vist betraktelig redusert. A corresponding solution for storing a cylindrical twin tank is shown in Fig.5. The main difference between this solution and the one shown in Fig.1 and Fig.2 is that the support area between the center lines (10,11) has been removed, and that the extent of the thermally insulating and load-bearing intermediate layer (8) is, as shown, considerably reduced.
Imidlertid er understøttelsesområdet mellom senterlinjene (10,11) noe utvidet for å kunne absorbere sammentrekking av tvillingtanken ved nedkjøling og i kald tilstand. However, the support area between the center lines (10,11) is somewhat extended to absorb contraction of the twin tank during cooling and in a cold state.
På grunn av den viste reduksjonen i understøttelsesområdet, vil det oppstå et tverrskips bøyemoment på tvillingtanken, og for å unngå skadelige spenningskonstruksjoner på grunn av bøyemoment i skjæringsområdet, er det arrangert utvendige og isolerte kneplater (16,17) i skjæringsområdet motsatt til innvendige ringstivere (4) ved hvert opplager av tanken. Due to the shown reduction in the support area, a transom bending moment will occur on the twin tank, and to avoid damaging tension structures due to bending moment in the intersection area, external and insulated knee plates (16,17) are arranged in the intersection area opposite to internal ring stiffeners ( 4) at each supply of the tank.
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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NO20131266A NO336727B1 (en) | 2013-09-20 | 2013-09-20 | An arrangement for storage of a twin tank |
PCT/NO2014/050171 WO2015041542A1 (en) | 2013-09-20 | 2014-09-18 | A support system for bi-lobe cylindrical tanks |
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NO20131266A NO336727B1 (en) | 2013-09-20 | 2013-09-20 | An arrangement for storage of a twin tank |
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NO20131266A1 NO20131266A1 (en) | 2015-03-23 |
NO336727B1 true NO336727B1 (en) | 2015-10-26 |
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NO20131266A NO336727B1 (en) | 2013-09-20 | 2013-09-20 | An arrangement for storage of a twin tank |
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KR102041066B1 (en) * | 2016-05-10 | 2019-11-06 | 바르실라 핀랜드 오이 | Tank array |
EP3318791B1 (en) | 2016-11-07 | 2020-11-25 | AC-INOX GmbH | Multi-lobe cargo tank |
CN106742818A (en) * | 2017-01-13 | 2017-05-31 | 南通四方罐式储运设备制造有限公司 | A kind of many cabin tank containers |
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NO151842C (en) * | 1982-10-11 | 1985-06-12 | Moss Rosenberg Verft As | SOCIETY STORAGE FOR A LOCATED CYLINDER TANK |
DE102005057451A1 (en) * | 2005-12-01 | 2007-06-14 | Tge Gas Engineering Gmbh | Device for storing a tank in a ship |
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2013
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