JPS57204399A - Evacuation method for vacuum heat-insulation device - Google Patents

Evacuation method for vacuum heat-insulation device

Info

Publication number
JPS57204399A
JPS57204399A JP8820881A JP8820881A JPS57204399A JP S57204399 A JPS57204399 A JP S57204399A JP 8820881 A JP8820881 A JP 8820881A JP 8820881 A JP8820881 A JP 8820881A JP S57204399 A JPS57204399 A JP S57204399A
Authority
JP
Japan
Prior art keywords
valve
heat
evacuating
freon
trap
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.)
Pending
Application number
JP8820881A
Other languages
Japanese (ja)
Inventor
Masanobu Horiuchi
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8820881A priority Critical patent/JPS57204399A/en
Publication of JPS57204399A publication Critical patent/JPS57204399A/en
Pending 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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
    • F17C2227/0344—Air cooling
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling

Landscapes

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

Abstract

PURPOSE:To shorten the evacuation time and improve the degree of vacuum by substituting condensible gas for non-condensible gas in a vacuum heat-insulation layer and then evacuating it. CONSTITUTION:In case of evacuating a heat-insulation layer 2 of a vacuum heat- insulative double pipe 1, first the inside of the pipe 1 is communicated with blower 3 and evacuated through a valve 14, a valve 6 and a trap 7 by an evacuating device 8. Subsequently, the valve 6 is closed, and Freon 10 is charged in a vessel 9. A heater 4 is swithced off to cool the pipe 1 by cold air and a valve 5 is opened. Freon 10 passes through the valve 5 and goes into a heat-insulating portion 2. Liquid nitrogen 13 is charged in a vessel 12 to cool a trap 11, and the valve 6 is opened to evacuate the heat-insulating layer 2. Freon 10 is charged into the trap 11 and is cooled and liquefied, and is prevented from going into the evacuating device 8.
JP8820881A 1981-06-10 1981-06-10 Evacuation method for vacuum heat-insulation device Pending JPS57204399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8820881A JPS57204399A (en) 1981-06-10 1981-06-10 Evacuation method for vacuum heat-insulation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8820881A JPS57204399A (en) 1981-06-10 1981-06-10 Evacuation method for vacuum heat-insulation device

Publications (1)

Publication Number Publication Date
JPS57204399A true JPS57204399A (en) 1982-12-15

Family

ID=13936479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8820881A Pending JPS57204399A (en) 1981-06-10 1981-06-10 Evacuation method for vacuum heat-insulation device

Country Status (1)

Country Link
JP (1) JPS57204399A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010276173A (en) * 2009-05-29 2010-12-09 Jecc Torisha Co Ltd Vacuum heat insulating container, and method for introducing filler gas into vacuum heat insulating layer of the same
EP2615614A4 (en) * 2010-09-07 2017-09-13 Chubu University Educational Foundation Superconducting power transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010276173A (en) * 2009-05-29 2010-12-09 Jecc Torisha Co Ltd Vacuum heat insulating container, and method for introducing filler gas into vacuum heat insulating layer of the same
EP2615614A4 (en) * 2010-09-07 2017-09-13 Chubu University Educational Foundation Superconducting power transmission system

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