SE8802979D0 - SET AND BLOW FOR ASTAD COMING OF A SEALING PROP - Google Patents

SET AND BLOW FOR ASTAD COMING OF A SEALING PROP

Info

Publication number
SE8802979D0
SE8802979D0 SE8802979A SE8802979A SE8802979D0 SE 8802979 D0 SE8802979 D0 SE 8802979D0 SE 8802979 A SE8802979 A SE 8802979A SE 8802979 A SE8802979 A SE 8802979A SE 8802979 D0 SE8802979 D0 SE 8802979D0
Authority
SE
Sweden
Prior art keywords
bladder
tube
sealing
astad
prop
Prior art date
Application number
SE8802979A
Other languages
Swedish (sv)
Other versions
SE461807B (en
Inventor
Johan Trybom
Original Assignee
Johan Trybom
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 Johan Trybom filed Critical Johan Trybom
Priority to SE8802979A priority Critical patent/SE461807B/en
Publication of SE8802979D0 publication Critical patent/SE8802979D0/en
Priority to PCT/SE1989/000432 priority patent/WO1990002290A1/en
Publication of SE461807B publication Critical patent/SE461807B/en

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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/10—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with inflatable member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Pipe Accessories (AREA)

Abstract

For the purpose of providing a sealing stopper in a tube (11) which is to be closed-of to the flow of fluid therethrough there is used a bladder (10) which is introduced into the tube and inflated with air into tight abutment with the inner surface of the tube. The bladder has a sealing ring (40) made of liquid absorbent material arranged on the outer periphery thereof. The ring is saturated with water prior to introducing the bladder into the tube. Subsequent to inflating the bladder into tight abutment with the tube wall, the bladder is filled with a cold glycol mixture, which displaces the air from the bladder. The glycol mixture has a temperature of -20 DEG C and the water in the sealing ring will therefore freeze to ice and freeze solid to the inner surface of the tube and to the bladder.
SE8802979A 1988-08-25 1988-08-25 STRAIGHT AND BLEED BEFORE ASTATOMATICATING A SEATING PROP IN A TUBE SE461807B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8802979A SE461807B (en) 1988-08-25 1988-08-25 STRAIGHT AND BLEED BEFORE ASTATOMATICATING A SEATING PROP IN A TUBE
PCT/SE1989/000432 WO1990002290A1 (en) 1988-08-25 1989-08-16 Method and means for providing a sealing stopper in a tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8802979A SE461807B (en) 1988-08-25 1988-08-25 STRAIGHT AND BLEED BEFORE ASTATOMATICATING A SEATING PROP IN A TUBE

Publications (2)

Publication Number Publication Date
SE8802979D0 true SE8802979D0 (en) 1988-08-25
SE461807B SE461807B (en) 1990-03-26

Family

ID=20373127

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8802979A SE461807B (en) 1988-08-25 1988-08-25 STRAIGHT AND BLEED BEFORE ASTATOMATICATING A SEATING PROP IN A TUBE

Country Status (2)

Country Link
SE (1) SE461807B (en)
WO (1) WO1990002290A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682452B1 (en) * 1991-10-09 1994-12-30 Gaz De France DEVICE FOR SEALING A PIPE CARRYING A FLUID.
ITBS20060172A1 (en) 2006-08-04 2008-02-05 Lucchini Sidermeccanica Spa WHEEL FOR RAILWAY VEHICLES WITH HIGH BRACING CAPACITY
RU170114U1 (en) * 2016-07-27 2017-04-14 Общество с ограниченной ответственностью "ПАРК - Сервис" PNEUMATIC SEALING DEVICE
RU171752U1 (en) * 2016-10-05 2017-06-14 Общество с ограниченной ответственностью "ПАРК-Сервис" Pneumatic sealing device
RU207303U1 (en) * 2021-05-05 2021-10-21 Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий - Газпром ВНИИГАЗ" Temporary pipeline sealing device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805844A (en) * 1972-12-29 1974-04-23 V Bacon Plugging device for pipe lines
DE3535622A1 (en) * 1985-10-05 1987-04-09 Ruhrgas Ag METHOD AND DEVICE FOR THE INTERIM CLOSURE OF LARGE PIPELINES

Also Published As

Publication number Publication date
WO1990002290A1 (en) 1990-03-08
SE461807B (en) 1990-03-26

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