EP1279884A1 - Vorrichtung zur Isolation des Bodens eines Behälters - Google Patents

Vorrichtung zur Isolation des Bodens eines Behälters Download PDF

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Publication number
EP1279884A1
EP1279884A1 EP02291884A EP02291884A EP1279884A1 EP 1279884 A1 EP1279884 A1 EP 1279884A1 EP 02291884 A EP02291884 A EP 02291884A EP 02291884 A EP02291884 A EP 02291884A EP 1279884 A1 EP1279884 A1 EP 1279884A1
Authority
EP
European Patent Office
Prior art keywords
fabric
felt
cryogenic
spherical cap
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02291884A
Other languages
English (en)
French (fr)
Inventor
Alain Borromée
Rémo Cargnello
Arnaud Duval
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Euro Cryospace France GIE
Original Assignee
Cryospace LAir Liquide Aerospatiale GIE
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 Cryospace LAir Liquide Aerospatiale GIE filed Critical Cryospace LAir Liquide Aerospatiale GIE
Publication of EP1279884A1 publication Critical patent/EP1279884A1/de
Withdrawn legal-status Critical Current

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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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating 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
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls

Definitions

  • the present invention relates to a tank bottom isolation device, for example cryogenic.
  • the field of the invention is that of tank bottom insulation devices, consisting of a felt and fabric mattress, used against convection and radiation heat exchange, to ensure, for example, thermal insulation cryogenic tanks used in aeronautics and space.
  • the insulation of a bottom of the cryogenic tank 10, including the inspection door may consist of a mattress formed of one or more layers of felt 14, covered with 'a layer (“liner") aluminized 15. This mattress is held, in general, by fixing pins 18 bonded to the bottom of the tank.
  • Figure 1A illustrates, thus, a bottom view
  • Figure 1B illustrates a sectional view along section AA shown in Figure 1A
  • Figure 1C illustrates a detail view of such a device for isolating the known art positioned on a cryogenic tank bottom.
  • the bottom of the reservoir 10 has a spherical bottom cap 11, and is provided with a inspection door 12.
  • Sectors 13 of a mattress, formed of a layer of felt 14, for example of dacron, and of an aluminized layer 15, are arranged on this tank bottom.
  • These sectors 13 are fixed to said bottom by means of fixing pins 18 glued to it and by smooth rod fasteners 19, and are interconnected by welded joints 20.
  • Such a device of the known art makes it possible to control the thickness of the mattress ensuring thermal insulation. But it is a complex and costly implementation: The assembly of such a device requires a lot of integration time and thereby generates production cycles which can be long. In addition, it cannot be integrated on the bottom of a tank in a single operation.
  • the object of the invention is to overcome these drawbacks by proposing a device for thermal insulation of the tank bottom, for example cryogenic, which does not have recourse to bonding or tightening, and which allows mass production at a reasonable industrial cost.
  • the present invention relates to a tank bottom isolation device, for example cryogenic, comprising a padded assembly formed by at least one layer of felt and a cryogenic fabric so as to form an insulating gas blanket on the surface of said tank bottom, characterized in that it comprises a frame for fixing said assembly to the bottom of the tank.
  • the padded assembly has the shape of a spherical cap.
  • the fabric comprises several pieces in the form of circular sectors joined together by one of their spokes to form a spherical cap.
  • the layers of felt are fixed to said spherical cap by means of self-gripping bands.
  • Said spherical cap comprises at least one pass disposed along each of the radii of the circular sectors.
  • a central part is fixed on said spherical cap.
  • the frame comprises flexible linear elements, for example glass-epoxy resin composite tubes, each arranged in at least one pass and fixed, at one of their ends, to the central part.
  • all of the felt layers have a thickness of between 20 mm and 100 mm.
  • the felt comprises a polyester with helical crimp and a binder vinyl acetate copolymer added in the proportion of about 20%.
  • the cryogenic fabric is a double-sided aluminized glass fabric. This aluminized fabric has a flammability classification of M1, a surface mass of less than 250 grams per square meter and a tensile breaking stress at 77 K greater than 100 MPa in the warp-weft direction.
  • the invention thus provides an insulation device consisting of a padded assembly limiting the thermal exchanges of convection and radiation, the original design of which allows it to be integrated in a single operation on the concave or convex bottom of a tank likely to be at cryogenic temperature.
  • the originality of such a device lies in its fixing, which eliminates all the operations of surface treatment, projection of bonding primer and fixing of the pins by bonding, and in its form, which, in the presence of cables electrical, authorizes the routing of these and removes all fastening systems, bonding or tightening, on the bottom of the tank.
  • the device of the invention takes its shape without constraining parts which can be stressed by the deformation of the structure.
  • the creation of passers-by allowing the passage of the composite tubes, allows the routing of the electrical cables previously fixed on the tank.
  • the wiring can be integrated before the installation of the device. All the forces are distributed along the insulation and the problems of resistance at low temperature of the electric cables are nonexistent; these no longer being in contact with the wall of the tank.
  • the disassembly of this device is very rapid, and does not cause any degradation of the felt forming the insulating blanket, since it is not fixed to the bottom of the tank.
  • the device can be folded for storage and transport. The design of this device allows several assemblies and disassemblies without degradation of it, or of the structure to be protected, equipped with its wiring.
  • the device of the invention can advantageously be integrated into the lower bottom of the cryogenic upper stage of the Ariane 5 launcher, when the latter is in the launch zone (French Guiana).
  • FIG. 1A illustrates a view from below
  • FIG. 1B illustrates a sectional view along the section AA represented in FIG. 1A
  • FIG. 1C illustrates a detailed view of an isolation device of the known art positioned on a cryogenic tank bottom.
  • Figure 2 is a general view of the device of the invention mounted on an example of the tank bottom.
  • FIG. 3 is a detailed view, along arrow F, of the principle of attachment of the device of the invention as shown in FIG. 2.
  • FIG. 4 is a sectional view B-B of the device of the invention illustrated in FIG. 3.
  • the isolation device of the invention 30 is arranged, for example, on the convex bottom 31 of an H 2 tank 32 of the Ariane launcher 5.
  • the inspection hatch 33 In this figure is shown the inspection hatch 33 .
  • the device of the invention comprises a padded assembly, in the form of a spherical cap, comprising a cryogenic fabric 35 and at least one layer of felt 36 making it possible to form an insulating gas blanket at the surface of the tank bottom 31 and a frame 37 for fixing said assembly to said bottom, the tank wall being referenced 38.
  • the fabric 35 comprises several pieces in the form of circular sectors 40 assembled together, by sewing or by gluing, by a of their rays 41 to form a spherical cap.
  • the felt layer (s) 36 is (are) fixed to said cap by means of hook-and-loop strips, for example of the hook or astrakhan type.
  • the fabric comprises at least one pass 42 disposed along each radius 41 of the sectors 40.
  • a central part 43 is fixed thereon.
  • the frame 37 comprises flexible linear elements, for example tubes each arranged in at least one pass 42 and fixed to the central part 43 by interlocking.
  • the device of the invention thus comprises a cryogenic fabric cut into sectors and then assembled, by sewing or by gluing, in one piece. Along each sector assembly at least one pass 42 is made so as to allow the introduction of the tubes. At the center of the spherical cap formed by said device, the central part 43, fixed on said glass fabric, is used for fixing said tubes. Velcro strips hold the felt on the fabric.
  • the device of the invention can then be fixed to the tank in a single mounting operation, the central part 43 coming to be pressed against the bottom of the tank.
  • the device of the invention thus combines the principle of an "umbrella" of low thermal emissivity, studied so as to match the bottom of a cryogenic tank at a sufficient distance to form with the felt mattress an insulating gas mattress, with that of mounting systems such as "igloo tents". Is thus obtained, by mechanical fixing and bending of composite tubes, an insulation whose reinforcement is fixed without constraint and fits perfectly on the bottom of a tank, when cold and pressure thereof.
  • the cryogenic fabric is a double-sided aluminized glass fabric, of flammability classification M1, having a surface mass of less than 250 grams per square meter and a tensile breaking stress at 77 K greater than 100 MPa, in the warp and weft direction.
  • the felt with a thickness of 20 to 100 mm is preferably a polyester with a helical crimp
  • the binder is a vinyl acetate copolymer, added in the proportion of 20%.
  • the central part 43 makes it possible to fix the composite tubes at a distance of approximately 60 mm from the center of the spherical cap.
  • the central part 43 and the tubes of the frame are made of composite, fiberglass, very light or aluminum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP02291884A 2001-07-27 2002-07-25 Vorrichtung zur Isolation des Bodens eines Behälters Withdrawn EP1279884A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0110083 2001-07-27
FR0110083A FR2827941B1 (fr) 2001-07-27 2001-07-27 Dispositif d'isolation de fond de reservoir

Publications (1)

Publication Number Publication Date
EP1279884A1 true EP1279884A1 (de) 2003-01-29

Family

ID=8866003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02291884A Withdrawn EP1279884A1 (de) 2001-07-27 2002-07-25 Vorrichtung zur Isolation des Bodens eines Behälters

Country Status (2)

Country Link
EP (1) EP1279884A1 (de)
FR (1) FR2827941B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860059A1 (fr) * 2003-09-18 2005-03-25 Cryospace L Air Liquide Aerosp Procede d'isolation thermique d'un double fond separant deux ergols d'un reservoir
EP1645793A2 (de) * 2004-10-08 2006-04-12 Cryospace l'air liquide aerospatiale Tieftemperaturisoliervorrichting
CN101614319B (zh) * 2008-06-23 2013-03-27 南通中集罐式储运设备制造有限公司 低温多层绝热容器
EP2726375B1 (de) 2011-07-01 2016-04-06 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Kryogener flüssigkeitstank und seine verwendung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2134320A1 (de) * 1971-07-09 1973-01-18 Linde Ag Speicherbehaelter fuer verfluessigte gase
US4044184A (en) * 1973-06-27 1977-08-23 Mitsubishi Chemical Industries Ltd. Cryogenic insulating structure
FR2632051A1 (fr) * 1988-05-24 1989-12-01 Hembert Claude Revetement de protection anti-feu et thermique
EP0565444A1 (de) * 1992-04-09 1993-10-13 Etienne Leflaive Lagertank für Flüssiggas
DE19725818A1 (de) * 1997-06-18 1998-12-24 Linde Ag Wärmedämmung mit Matten aus Folienmaterial im Vakuum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2134320A1 (de) * 1971-07-09 1973-01-18 Linde Ag Speicherbehaelter fuer verfluessigte gase
US4044184A (en) * 1973-06-27 1977-08-23 Mitsubishi Chemical Industries Ltd. Cryogenic insulating structure
FR2632051A1 (fr) * 1988-05-24 1989-12-01 Hembert Claude Revetement de protection anti-feu et thermique
EP0565444A1 (de) * 1992-04-09 1993-10-13 Etienne Leflaive Lagertank für Flüssiggas
DE19725818A1 (de) * 1997-06-18 1998-12-24 Linde Ag Wärmedämmung mit Matten aus Folienmaterial im Vakuum

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860059A1 (fr) * 2003-09-18 2005-03-25 Cryospace L Air Liquide Aerosp Procede d'isolation thermique d'un double fond separant deux ergols d'un reservoir
EP1645793A2 (de) * 2004-10-08 2006-04-12 Cryospace l'air liquide aerospatiale Tieftemperaturisoliervorrichting
EP1645793A3 (de) * 2004-10-08 2010-12-08 Cryospace l'air liquide aerospatiale Tieftemperaturisoliervorrichting
CN101614319B (zh) * 2008-06-23 2013-03-27 南通中集罐式储运设备制造有限公司 低温多层绝热容器
EP2726375B1 (de) 2011-07-01 2016-04-06 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Kryogener flüssigkeitstank und seine verwendung
EP2726375B2 (de) † 2011-07-01 2019-05-08 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Kryogener flüssigkeitstank und seine verwendung

Also Published As

Publication number Publication date
FR2827941B1 (fr) 2003-10-31
FR2827941A1 (fr) 2003-01-31

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