WO2009112042A1 - Dispositif de compensation par précontrainte afin de réduire les contraintes - Google Patents

Dispositif de compensation par précontrainte afin de réduire les contraintes Download PDF

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Publication number
WO2009112042A1
WO2009112042A1 PCT/EP2008/001889 EP2008001889W WO2009112042A1 WO 2009112042 A1 WO2009112042 A1 WO 2009112042A1 EP 2008001889 W EP2008001889 W EP 2008001889W WO 2009112042 A1 WO2009112042 A1 WO 2009112042A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrier layer
compensation element
compensation
edges
overlapping surfaces
Prior art date
Application number
PCT/EP2008/001889
Other languages
German (de)
English (en)
Inventor
Jens Pehlke
Katinka Wolgast
Volker Fiebig
Michael Klamp
Miroslav Denev
Keno Dirks
Original Assignee
Aker Mtw Werft Gmbh
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 Mtw Werft Gmbh filed Critical Aker Mtw Werft Gmbh
Priority to PCT/EP2008/001889 priority Critical patent/WO2009112042A1/fr
Publication of WO2009112042A1 publication Critical patent/WO2009112042A1/fr

Links

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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—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
    • F17C2203/0614—Single wall
    • F17C2203/0619—Single wall with two layers
    • 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
    • F17C2209/227—Assembling processes by adhesive 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
    • 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
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F17C2270/0107—Wall panels

Definitions

  • the present invention relates to a device for voltage-reducing compensation of changes in length within the barrier layers of an insulation system made of composite panels of a tank for the transport and storage of cryogenic media. It is used in particular on tankers and stationary tanks for liquefied natural gas.
  • cryogenic media e.g. liquefied natural gas
  • special insulation systems are used to transport and store the cryogenic charge in a sealed and thermally insulated manner.
  • cryogenic media e.g. liquefied natural gas
  • special insulation systems are used to transport and store the cryogenic charge in a sealed and thermally insulated manner.
  • a group of tank systems for the transport and storage of cryogenic liquefied natural gas is called a membrane tank.
  • the thermal insulation takes place in the tank by two layers of insulating material arranged one above the other. Two so-called barriers (membrane layers) serve to ensure the tightness.
  • the inner (primary) membrane forms the actual cargo tank.
  • the second (secondary) membrane lies between the first and second insulating layer and serves for system security.
  • DE 20 22 205 describes a tank system in which the tank wall elements made of different metallic material are deformed so that they are curved in the warm state and show free-bearing in the tank interior.
  • the wall elements should deform due to the different thermal contraction of both metals to quasi-planar surfaces, which are thereby supported on the underlying insulation.
  • the elements are not biased but are merely preformed.
  • DE C 99 35 AZ describes an insulating wall for stoves and fire chambers.
  • the compensators shown there are classic stretch marks that reduce thermal stress through deformation. A bias of the stretch marks is not provided or described here.
  • US 4,207,827 describes a membrane system consisting of large, prefabricated insulating panels.
  • the primary barrier of two adjacent panels is connected to compensators, which are not biased, but are preformed bead-shaped, to absorb occurring thermal stresses by re-deformation.
  • the compensators shown here act mechanically as a suspension body.
  • US Pat. No. 3,091,817 describes a diaphragm system with primary compensators that are classical for the primary barrier and designed to absorb the thermal stresses by deformation (contraction). In this system, the compensation elements in the primary barrier are not biased for the purpose of stress relief in the cold state, as is the case in our invention.
  • US Pat. No. 3,079,026 by the same inventor as US Pat. No. 3,091,817 likewise describes a membrane system with compensators which are classic for the primary barrier and which are intended to compensate for the thermal stresses (contraction) by deformation. In this system, the compensation elements in the primary barrier are also not biased for the purpose of voltage reduction in the cold state.
  • the object of the invention is to reduce the stress in the material of the barrier layer and to ensure a low-tension contraction of the adjacent barrier layers.
  • this object is achieved in that at least one barrier layer is equipped with one or more compensation elements.
  • at least one compensation element is large enough to compensate for thermal stresses.
  • the holding means may have transverse to the overlapping surfaces extending support elements of the compensation element and / or the barrier layer, which are supported on edges of the adjacent portions of the barrier layer and / or the compensation element.
  • they may be an extension of the compensation element or the barrier layer and towards the inside of the insulation, that is to say arranged approximately at right angles in the direction of the tank structure.
  • the support elements may be supported on lateral edges and / or on edges of grooves or other depressions of the barrier layer and / or the compensation element.
  • the holding means may have butt abutting edges of the compensation element and the adjacent portions of the barrier layer.
  • the overlapping surfaces are sections of the compensation elements.
  • they belong to strips which each overlap a compensation element and a barrier layer at least on the edge side. This embodiment can be used in particular if the compensation elements and the barrier layers have butt-abutting edges.
  • these compensation elements When installing, i. below room temperature, these compensation elements are biased. This bias is achieved by pressure exerted parallel to the barrier layer against the retaining means in the direction of the compensation elements. By the bias pressure is introduced into the barrier layers, which reduces or eliminates the resulting by thermal contraction tensile stress in the material of the compensation elements and in their connection points to the barrier layers.
  • the compensation elements By cooling resulting contraction of the barrier layers of the adjacent composite panels namely relax the compensation elements.
  • the bias of the compensation elements is reduced by the cooling when filled with liquid due to the opposing thermoelectric voltages.
  • the compensation elements can be completely or partially relax. It is also possible that, in the case of particularly strong cooling, the compensation elements are first completely relaxed and subsequently stretched. According to one embodiment, a plurality of interruptions of the barrier layer between adjacent composite panels are bridged by compensation elements.
  • the composite panels have at least one barrier layer and at least one insulating layer.
  • the composite panels have a primary barrier layer, including a primary insulating layer, including a secondary barrier layer and optionally including a secondary insulating layer.
  • Composite panels which are suitable for use according to the invention are described in particular in DE 10 2006 016 996 A1.
  • Fig. 1 is a schematic representation of an insulating layer 8 and a barrier layer 4.
  • the barrier layer 4 is provided with two hooks 3 and a compensation element 1, which is biased equipped.
  • Fig. 2 is a schematic representation of a compensation element 1 which is biased, with hooks 3 and a compensation elements 1. There are also the overlapping surfaces 5 and the adhesive surfaces 7 can be seen.
  • FIG. 1 shows adjacent composite panels 2 each having a barrier layer 4 and an insulating layer 8.
  • the total of the composite panels 2 formed barrier layer 4 is interrupted.
  • the sections of the barrier layer 4 separated from the interruption are separated by a compensation element 1, which is biased, overlaps.
  • a compensation element 1 which is biased, overlaps.
  • At the edges of the compensation element 1 hooks 3 are arranged.
  • Compensation element 1 is compressed to the hooks 3 and inserted into the interruption of the barrier layer 4.
  • the compensation element 1 and the adjacent sections of the barrier layer 4 are shown rotated about the horizontal axis. It can be seen attached at right angles to the barrier layer 4 hooks 3. Adhesive surfaces 7 on the overlapping surfaces 5, the sections of the barrier layer 4 and the compensation element 1 are interconnected.
  • the compensation element 1 has a longitudinally extending bead 9, which facilitates a certain compression of the hooks 3 when installing the compensation element between the sections of the barrier layer 4.
  • the bead 9 is a resilient element, which endeavors to press the hooks 3 apart again in the warm state and to compensate for tensile stresses in the cold state (tank filling with liquefied gas).
  • the compensation element 1 is preferably made of the same material as the barrier layers 4, in particular of a metallic material. Designation list

Landscapes

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

Abstract

L'invention porte sur un dispositif de compensation des variations de longueur à l'intérieur d'au moins une couche barrière, afin de réduire les contraintes, dans un système isolant de panneaux composites d'une cuve destinée au stockage et au transport de produits surgelés, les couches barrières étant interrompues et étant reliées par au moins un élément de compensation, avec surfaces se superposant, ledit élément de compensation étant précontraint de manière que l'élément de compensation soit mis en précontrainte lors de son installation et soit maintenu en précontrainte par des moyens de maintien entre les segments voisins de la couche barrière qui sont séparés l'un de l'autre par cette interruption et que, lors de la contraction thermique de la couche barrière, ledit au moins un élément de compensation se détende.
PCT/EP2008/001889 2008-03-10 2008-03-10 Dispositif de compensation par précontrainte afin de réduire les contraintes WO2009112042A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/001889 WO2009112042A1 (fr) 2008-03-10 2008-03-10 Dispositif de compensation par précontrainte afin de réduire les contraintes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/001889 WO2009112042A1 (fr) 2008-03-10 2008-03-10 Dispositif de compensation par précontrainte afin de réduire les contraintes

Publications (1)

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WO2009112042A1 true WO2009112042A1 (fr) 2009-09-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018065485A1 (fr) * 2016-10-04 2018-04-12 Torgy Lng Holding As Panneau d'étanchéité

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457622A (en) * 1964-12-28 1969-07-29 Exxon Research Engineering Co Method of installing a sealing means in a cryogenic tanker construction
GB1307324A (en) * 1970-03-13 1973-02-21 Bridgestone Liquefied Gas Co Low temperature liquefied gas tanks
DE2520576A1 (de) * 1975-05-09 1976-11-18 Wezel & Co Waermeisolierwand aus kunststoffhartschaum und verfahren zu deren herstellung
DE2648211A1 (de) * 1975-11-03 1977-05-12 Owens Corning Fiberglass Corp Isolierter behaelter fuer kryogene fluessigkeiten
JP2004106884A (ja) * 2002-09-18 2004-04-08 Shimizu Corp タンク側壁の施工方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457622A (en) * 1964-12-28 1969-07-29 Exxon Research Engineering Co Method of installing a sealing means in a cryogenic tanker construction
GB1307324A (en) * 1970-03-13 1973-02-21 Bridgestone Liquefied Gas Co Low temperature liquefied gas tanks
DE2520576A1 (de) * 1975-05-09 1976-11-18 Wezel & Co Waermeisolierwand aus kunststoffhartschaum und verfahren zu deren herstellung
DE2648211A1 (de) * 1975-11-03 1977-05-12 Owens Corning Fiberglass Corp Isolierter behaelter fuer kryogene fluessigkeiten
JP2004106884A (ja) * 2002-09-18 2004-04-08 Shimizu Corp タンク側壁の施工方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018065485A1 (fr) * 2016-10-04 2018-04-12 Torgy Lng Holding As Panneau d'étanchéité

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