FR2417719A1 - Vase de dewar a azote liquide, a faible coefficient d'emission - Google Patents

Vase de dewar a azote liquide, a faible coefficient d'emission

Info

Publication number
FR2417719A1
FR2417719A1 FR7904112A FR7904112A FR2417719A1 FR 2417719 A1 FR2417719 A1 FR 2417719A1 FR 7904112 A FR7904112 A FR 7904112A FR 7904112 A FR7904112 A FR 7904112A FR 2417719 A1 FR2417719 A1 FR 2417719A1
Authority
FR
France
Prior art keywords
liquid nitrogen
casing
low emissions
heat shield
dewar 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.)
Granted
Application number
FR7904112A
Other languages
English (en)
Other versions
FR2417719B1 (fr
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 FR2417719A1 publication Critical patent/FR2417719A1/fr
Application granted granted Critical
Publication of FR2417719B1 publication Critical patent/FR2417719B1/fr
Granted 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

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

Abstract

L'invention concerne un vase de Dewar pour de l'azote liquide, à faible coefficient d'émission. Il comporte essentiellement un boîtier et une enveloppe en tôle d'alliage d'aluminium repoussé, séparés par un espace vidé d'air dans lequel se trouve un écran thermique. Les surfaces en regard du boîtier, de l'écran thermique et de l'enveloppe extérieure sont polies mécaniquement, ou par voie chimique ou électrolytique, et subissent un traitement par un décapant à l'acide nitrique et à l'acide fluorhydrique qui en abaisse le coefficient d'émission de rayonnement thermique. L'invention s'applique notamment à un spectromètre à résonance magnétique nucléaire.
FR7904112A 1978-02-21 1979-02-19 Vase de dewar a azote liquide, a faible coefficient d'emission Granted FR2417719A1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2417719A1 true FR2417719A1 (fr) 1979-09-14
FR2417719B1 FR2417719B1 (fr) 1984-01-20

Family

ID=25373827

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7904112A Granted FR2417719A1 (fr) 1978-02-21 1979-02-19 Vase de dewar a azote liquide, a faible coefficient d'emission

Country Status (6)

Country Link
JP (2) JPS54128821A (fr)
CA (1) CA1116107A (fr)
CH (1) CH639744A5 (fr)
DE (1) DE2906075C2 (fr)
FR (1) FR2417719A1 (fr)
GB (1) GB2015720B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995020062A1 (fr) * 1994-01-21 1995-07-27 Aluminum Company Of America Procede pour eliminer les depots mats sur des alliages d'aluminium ayant une surface hautement reflechissante

Families Citing this family (4)

* 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
GB2129117B (en) * 1982-08-25 1985-12-18 Zojirushi Vacuum Bottle Co Stainless steel vacuum bottle and its production
JP2003068520A (ja) * 2001-08-23 2003-03-07 Sumitomo Heavy Ind Ltd 冷凍機冷却型超電導マグネット装置
CN106939964A (zh) * 2017-03-04 2017-07-11 杭州医学院 一种热水瓶式液氮罐及内胆替换方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB636880A (en) * 1945-08-25 1950-05-10 Sperry Gyroscope Co Inc Improvements in or relating to surface treatments for aluminium and aluminium alloys
FR1029818A (fr) * 1949-08-08 1953-06-08 Vaw Ver Aluminium Werke Ag Procédé chimique pour l'obtention de surfaces à haut brillant sur l'aluminium et les alliages d'aluminium
US2643022A (en) * 1947-08-15 1953-06-23 Union Carbide & Carbon Corp Radiation shield supports in vacuum insulated containers
US2719781A (en) * 1952-04-09 1955-10-04 Kaiser Aluminium Chem Corp Composition and method for treating aluminum and aluminum alloys
GB814207A (en) * 1956-08-03 1959-06-03 Aro Equipment Corp Vacuum insulated vessels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB636880A (en) * 1945-08-25 1950-05-10 Sperry Gyroscope Co Inc Improvements in or relating to surface treatments for aluminium and aluminium alloys
US2643022A (en) * 1947-08-15 1953-06-23 Union Carbide & Carbon Corp Radiation shield supports in vacuum insulated containers
FR1029818A (fr) * 1949-08-08 1953-06-08 Vaw Ver Aluminium Werke Ag Procédé chimique pour l'obtention de surfaces à haut brillant sur l'aluminium et les alliages d'aluminium
US2719781A (en) * 1952-04-09 1955-10-04 Kaiser Aluminium Chem Corp Composition and method for treating aluminum and aluminum alloys
GB814207A (en) * 1956-08-03 1959-06-03 Aro Equipment Corp Vacuum insulated vessels

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/60 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995020062A1 (fr) * 1994-01-21 1995-07-27 Aluminum Company Of America Procede pour eliminer les depots mats sur des alliages d'aluminium ayant une surface hautement reflechissante

Also Published As

Publication number Publication date
FR2417719B1 (fr) 1984-01-20
JPH0260584B2 (fr) 1990-12-17
DE2906075A1 (de) 1979-08-30
GB2015720B (en) 1982-10-13
JPH0432555B2 (fr) 1992-05-29
JPH01251677A (ja) 1989-10-06
CA1116107A (fr) 1982-01-12
CH639744A5 (de) 1983-11-30
DE2906075C2 (de) 1987-03-12
GB2015720A (en) 1979-09-12
JPS54128821A (en) 1979-10-05

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