GB2015720A - Dewar vacuum flask for cryogenic liquid - Google Patents

Dewar vacuum flask for cryogenic liquid

Info

Publication number
GB2015720A
GB2015720A GB7905461A GB7905461A GB2015720A GB 2015720 A GB2015720 A GB 2015720A GB 7905461 A GB7905461 A GB 7905461A GB 7905461 A GB7905461 A GB 7905461A GB 2015720 A GB2015720 A GB 2015720A
Authority
GB
United Kingdom
Prior art keywords
shell
exterior
liquid
exterior shell
vacuum flask
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.)
Granted
Application number
GB7905461A
Other versions
GB2015720B (en
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB2015720A publication Critical patent/GB2015720A/en
Application granted granted Critical
Publication of GB2015720B publication Critical patent/GB2015720B/en
Expired legal-status Critical Current

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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals
    • C23G1/125—Light metals 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0308—Radiation shield
    • 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
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • 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
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use
    • F17C2270/0509—"Dewar" vessels

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • General Engineering & Computer Science (AREA)
  • ing And Chemical Polishing (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Packages (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A Dewar vacuum flask 10 includes a spun can 25 for the liquid, e.g. liquid nitrogen, which spun can is surrounded by an exterior shell 26. Between the exterior shell 26 and the can 25 is an evacuated space containing a second shell 29 that functions as a radiation shield. The can and both shells are formed of an aluminium alloy having a very high percentage of aluminium. The exterior can surface, interior surface of the exterior shell, and both surfaces of the second shell have clean, non-pitted, smooth, matted, smut free and etched appearances free from discoloration and stains so that these surfaces have low radiation emissivity properties and there is a minimum amount of radiant energy transmitted from the exterior shell to the can and reduce heating of the liquid in the can. Each of the surfaces is initially polished, either mechanically, electrochemically or chemically, and then chemically treated with an etchant of nitric acid and hydrofluoric acid for a sufficient duration to achieve the desired appearance. <IMAGE>
GB7905461A 1978-02-21 1979-02-15 Dewar vacuum flask for cryogenic liquid Expired GB2015720B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87929078A 1978-02-21 1978-02-21

Publications (2)

Publication Number Publication Date
GB2015720A true GB2015720A (en) 1979-09-12
GB2015720B GB2015720B (en) 1982-10-13

Family

ID=25373827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7905461A Expired GB2015720B (en) 1978-02-21 1979-02-15 Dewar vacuum flask for cryogenic liquid

Country Status (6)

Country Link
JP (2) JPS54128821A (en)
CA (1) CA1116107A (en)
CH (1) CH639744A5 (en)
DE (1) DE2906075A1 (en)
FR (1) FR2417719A1 (en)
GB (1) GB2015720B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129117A (en) * 1982-08-25 1984-05-10 Zojirushi Vacuum Bottle Co Stainless steel vacuum bottle and its production
CN106939964A (en) * 2017-03-04 2017-07-11 杭州医学院 A kind of thermos bottle type liquid nitrogen container and inner bag replacement method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350017A (en) * 1980-11-10 1982-09-21 Varian Associates, Inc. Cryostat structure
US5417819A (en) * 1994-01-21 1995-05-23 Aluminum Company Of America Method for desmutting aluminum alloys having a highly reflective surface
JP2003068520A (en) * 2001-08-23 2003-03-07 Sumitomo Heavy Ind Ltd Freezer cooling type of superconductive magnet device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB814207A (en) * 1956-08-03 1959-06-03 Aro Equipment Corp Vacuum insulated vessels
US2541083A (en) * 1945-08-25 1951-02-13 Sperry Corp Electroplating on aluminum
US2643022A (en) * 1947-08-15 1953-06-23 Union Carbide & Carbon Corp Radiation shield supports in vacuum insulated containers
FR1029818A (en) * 1949-08-08 1953-06-08 Vaw Ver Aluminium Werke Ag Chemical process for obtaining high gloss surfaces on aluminum and aluminum alloys
US2719781A (en) * 1952-04-09 1955-10-04 Kaiser Aluminium Chem Corp Composition and method for treating aluminum and aluminum alloys
US2729551A (en) * 1954-01-18 1956-01-03 Samuel L Cohn Surface treatment of aluminum and its alloys
US2776069A (en) * 1955-06-30 1957-01-01 Little Inc A Container for liquefied gas
FR2036463A5 (en) * 1969-03-14 1970-12-24 Air Liquide Insulating cryogenic fluid containers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129117A (en) * 1982-08-25 1984-05-10 Zojirushi Vacuum Bottle Co Stainless steel vacuum bottle and its production
CN106939964A (en) * 2017-03-04 2017-07-11 杭州医学院 A kind of thermos bottle type liquid nitrogen container and inner bag replacement method

Also Published As

Publication number Publication date
FR2417719B1 (en) 1984-01-20
FR2417719A1 (en) 1979-09-14
JPH01251677A (en) 1989-10-06
GB2015720B (en) 1982-10-13
DE2906075C2 (en) 1987-03-12
JPH0260584B2 (en) 1990-12-17
CA1116107A (en) 1982-01-12
JPS54128821A (en) 1979-10-05
DE2906075A1 (en) 1979-08-30
CH639744A5 (en) 1983-11-30
JPH0432555B2 (en) 1992-05-29

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19951127

PE20 Patent expired after termination of 20 years

Effective date: 19990214