GB1297297A - - Google Patents

Info

Publication number
GB1297297A
GB1297297A GB1297297DA GB1297297A GB 1297297 A GB1297297 A GB 1297297A GB 1297297D A GB1297297D A GB 1297297DA GB 1297297 A GB1297297 A GB 1297297A
Authority
GB
United Kingdom
Prior art keywords
pipe
shear
housing
shearing
tool
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.)
Expired
Application number
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 filed Critical
Publication of GB1297297A publication Critical patent/GB1297297A/en
Expired 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
    • F16K3/188—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of hydraulic forces
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/312—Line blinds
    • 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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
    • 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
    • F16L55/105—Closing devices introduced radially into the pipe or hose

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Drilling And Boring (AREA)

Abstract

1297297 Shearing PIPE-LINE DEVELOPMENT CO 30 Nov 1970 [24 Feb 1970] 56685/70 Heading B3W [Also in Division F2] Apparatus for opening a pipe-line comprises a fluid tight housing 11 for securing to the exterior of a pipe 12, a shearing tool 13 mounted in the housing and supported for movement radially of the pipe and externally operable actuator means for forcing the shear tool 13 through the wall of the pipe. As shown the housing 11 (in two halves) is secured to the pipe 12 by welding, the pipe having first been reinforced by welding thereto, rings 31, 32 in the vicinity of where the shearing is to take place. Actuating means in the form of double acting piston 63 in cylinder 14 and having the shear 13 attached thereto is then secured to the housing 11. The shear 13 has two cutting edges 47, 48 and by admitting fluid under pressure above piston 63 the shear 13 is forced downwards to shear away a portion of the pipe between rings 31, 32 depositing the sheared away portion in the lower half of housing 11 from where it can be subsequently removed. The shear 13 preferably houses a plug 15 which can be forced by fluid pressure admitted behind it into contact with one of the sheared faces of the pipe. Two such plugs may be provided if desired. Subsequently the plug and shear tool can be removed leaving the water tight housing in situ. The pipe can be initially weakened at the shear faces e.g. by cutting partially into the pipe surface and the water tightness of the housing 11 can be tested before the shearing operation by drilling a hole in the portion of pipe to be sheared away.
GB1297297D 1970-02-24 1970-11-30 Expired GB1297297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1329570A 1970-02-24 1970-02-24

Publications (1)

Publication Number Publication Date
GB1297297A true GB1297297A (en) 1972-11-22

Family

ID=21759224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297297D Expired GB1297297A (en) 1970-02-24 1970-11-30

Country Status (6)

Country Link
BE (1) BE759510A (en)
CA (1) CA926319A (en)
DE (1) DE2059905C2 (en)
FR (1) FR2073000A5 (en)
GB (1) GB1297297A (en)
NL (1) NL165824C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010091A1 (en) * 1989-12-22 1991-07-11 S.T. Ritvanen Oy Cutting valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9116111D0 (en) * 1991-07-25 1991-09-11 Underpressure Eng Co Ltd Pipe plugging means
US5430932A (en) * 1994-03-15 1995-07-11 Insta Valve Co. Ltd Apparatus for installing a valve on or into an existing pipe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US940356A (en) * 1907-01-05 1909-11-16 Frederick A Phelps Valve-inserting machine.
US1898935A (en) * 1928-03-03 1933-02-21 Mueller Co Pipe cutter and valve inserting machine
US1989768A (en) * 1933-12-07 1935-02-05 Alfred C Nieman Apparatus for inserting valves in pipe lines
US2655339A (en) * 1951-07-11 1953-10-13 Mueller Co Pipe line stopper
US2820482A (en) * 1954-12-03 1958-01-21 Dolphice H Greenwood Line blind gate valve
US2812778A (en) * 1955-10-10 1957-11-12 Williamson Inc T Pipe line plugger
US3108499A (en) * 1960-09-28 1963-10-29 John R Duncan Method and apparatus for severing section of fluid pipeline therefrom
US3298398A (en) * 1964-02-07 1967-01-17 Joseph B Smith Plugging apparatus for pipe lines
US3385314A (en) * 1966-02-25 1968-05-28 Charles L. Thompson Valve apparatus
US3833020A (en) * 1970-02-24 1974-09-03 Pipe Line Development Co Apparatus for plugging pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010091A1 (en) * 1989-12-22 1991-07-11 S.T. Ritvanen Oy Cutting valve

Also Published As

Publication number Publication date
NL165824C (en) 1981-05-15
FR2073000A5 (en) 1971-09-24
DE2059905C2 (en) 1982-10-21
DE2059905A1 (en) 1971-09-02
BE759510A (en) 1971-04-30
NL165824B (en) 1980-12-15
NL7100615A (en) 1971-08-26
CA926319A (en) 1973-05-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee