GB2172942A - Cryogenic sealing method - Google Patents

Cryogenic sealing method

Info

Publication number
GB2172942A
GB2172942A GB08512814A GB8512814A GB2172942A GB 2172942 A GB2172942 A GB 2172942A GB 08512814 A GB08512814 A GB 08512814A GB 8512814 A GB8512814 A GB 8512814A GB 2172942 A GB2172942 A GB 2172942A
Authority
GB
United Kingdom
Prior art keywords
sealing method
adjacent
cryogenic sealing
refridgerant
mated
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Withdrawn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
GB08512814A
Other versions
GB8512814D0 (en
Inventor
Nicholas P M Sinclair-Brown
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.)
DWG PARTNERS Ltd
Original Assignee
DWG PARTNERS 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 DWG PARTNERS Ltd filed Critical DWG PARTNERS Ltd
Publication of GB8512814D0 publication Critical patent/GB8512814D0/en
Publication of GB2172942A publication Critical patent/GB2172942A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/103—Means for stopping flow from or in pipes or hoses by temporarily freezing liquid sections in the pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/34—Diving chambers with mechanical link, e.g. cable, to a base
    • B63C11/36—Diving chambers with mechanical link, e.g. cable, to a base of closed type
    • B63C11/40—Diving chambers with mechanical link, e.g. cable, to a base of closed type adapted to specific work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/403—Sealings between relatively-moving surfaces by means of fluid by changing the state of matter

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Pipeline Systems (AREA)
  • Pipe Accessories (AREA)
  • Sealing Devices (AREA)

Abstract

A method of obtaining a hermetic seal capable of withstanding underwater pressure conditions by the controlled use of a circulating refridgerant within a tubular coil or other system set within or adjacent to the surfaces to be mated so as to freeze the adjacent water thereby enabling a pressure differential to exist on either side of the seal sufficient for personnel to perform work within the sealed area at pressures which do not require saturation of the body with "diving gas".
GB08512814A 1983-09-20 1984-09-20 Cryogenic sealing method Withdrawn GB2172942A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838325150A GB8325150D0 (en) 1983-09-20 1983-09-20 Submarine
PCT/GB1984/000320 WO1985001262A1 (en) 1983-09-20 1984-09-20 Cryogenic sealing method

Publications (2)

Publication Number Publication Date
GB8512814D0 GB8512814D0 (en) 1985-06-26
GB2172942A true GB2172942A (en) 1986-10-01

Family

ID=10549041

Family Applications (2)

Application Number Title Priority Date Filing Date
GB838325150A Pending GB8325150D0 (en) 1983-09-20 1983-09-20 Submarine
GB08512814A Withdrawn GB2172942A (en) 1983-09-20 1984-09-20 Cryogenic sealing method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB838325150A Pending GB8325150D0 (en) 1983-09-20 1983-09-20 Submarine

Country Status (3)

Country Link
EP (1) EP0155308A1 (en)
GB (2) GB8325150D0 (en)
WO (1) WO1985001262A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5823708A (en) * 1996-01-16 1998-10-20 Dwight; John M. Device which provides an underwater dry workshop environment for ship propeller inspection and repair
GB0020896D0 (en) * 2000-08-25 2000-10-11 Cuthbert Anthony Ise ice structural engineering

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407612A (en) * 1966-02-04 1968-10-29 Wylie B. Pearce Submarine pipeline caisson
FR2115649A5 (en) * 1970-11-27 1972-07-07 Sogev Ste Gle Du Vide Glands for vacuum appts - using seals composed of gas solidified by low temp
GB2114636A (en) * 1980-09-19 1983-08-24 Harald Andersen Wallevik Working chamber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407612A (en) * 1966-02-04 1968-10-29 Wylie B. Pearce Submarine pipeline caisson
FR2115649A5 (en) * 1970-11-27 1972-07-07 Sogev Ste Gle Du Vide Glands for vacuum appts - using seals composed of gas solidified by low temp
GB2114636A (en) * 1980-09-19 1983-08-24 Harald Andersen Wallevik Working chamber

Also Published As

Publication number Publication date
EP0155308A1 (en) 1985-09-25
GB8325150D0 (en) 1983-10-19
WO1985001262A1 (en) 1985-03-28
GB8512814D0 (en) 1985-06-26

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)