GB1347252A - Underpressure pipe stopping apparatus - Google Patents

Underpressure pipe stopping apparatus

Info

Publication number
GB1347252A
GB1347252A GB1347252DA GB1347252A GB 1347252 A GB1347252 A GB 1347252A GB 1347252D A GB1347252D A GB 1347252DA GB 1347252 A GB1347252 A GB 1347252A
Authority
GB
United Kingdom
Prior art keywords
pipe
frame
nipple
plug
housing
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
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1347252A publication Critical patent/GB1347252A/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
    • 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
    • F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/124—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced radially into the pipe or hose
    • 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

Landscapes

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

Abstract

1347252 Stopping pipes G J EVANS 21 May 1971 [24 Feb 1970 24 March 1970 9 April 1970 27 May 1970 3 July 1970 (2) 2 Sept 1970] 8768/70 14324/70 16807/70 25348/70 32289/70 35051/70 and 42060/70 Heading F2P Pipe stopping apparatus comprises an openended body 34 connectible by means of a nipple 32 at its open end to a hole 30 in the wall of a pipe 10, means 62 for sealing the body against escape therethrough of fluid from the pipe, a frame supporting a flexible diaphragm 72 that is held in a collapsed condition within the body and may be advanced from the body into the pipe in which the frame is expanded to a generally circular condition so that the diaphragm peripherally seals against the wall of the pipe. In the embodiment described a conventional underpressure drilling and tapping device (Fig. 1, not shown) is secured to the pipe and the hole 30 made therein. After removal of the drilling and tapping instrument (22) from a housing (12) of the device nipple 32 is screwed into the hole 30 and the body 34 introduced into the housing (12) and is sealed to the housing by means of an adaptor plate 90 with holes 92 for receiving clamping bolts (24). A coupling nut 40 is screwed on to nipple 32 by rotation of the body 34 and the housing (12) may then be removed and the nut 40 tightened. Rotation of nut 56 on feed screw 60 advances plug 62 pushing the diaphragm supporting frame into the pipe. The frame comprises two spring steel strips 78 hinged together at 80, 82. Hinge 80 is rigidly secured to plug 62 and hinge 82 is slidably mounted on the plug by means of pin 86 sliding in tube 38. As the frame is advanced contact with the opposite wall of the pipe pushes pin 86 into tube 88, expanding the strips 78 into a circular condition (Fig. 5, not shown) pressing the rim 76 of the diaphragm into contact with the wall of the pipe. Plug 62 and nipple 32 have curved end surfaces 70 and 31 that substantially follow the curvature of the pipe to provide an adequate seal in the region of the hole 30.
GB1347252D 1970-02-24 1970-02-24 Underpressure pipe stopping apparatus Expired GB1347252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB876870 1970-02-24

Publications (1)

Publication Number Publication Date
GB1347252A true GB1347252A (en) 1974-02-20

Family

ID=9858918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1347252D Expired GB1347252A (en) 1970-02-24 1970-02-24 Underpressure pipe stopping apparatus

Country Status (1)

Country Link
GB (1) GB1347252A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488972A1 (en) * 1980-08-22 1982-02-26 Petroles Cie Francaise METHOD OF INTERVENTION ON A CONDUIT TRANSPORTING A FLUID IN PARTICULAR ON A DRIVING CONDUCT
GB2270729A (en) * 1992-08-27 1994-03-23 Century Associates Limited Pipeline pig introducing apparatus
CN110726034A (en) * 2019-10-30 2020-01-24 河南聚匠机械设备安装工程有限公司 Leakage blocking method under pressure
CN113042938A (en) * 2021-02-25 2021-06-29 中国人民解放军联勤保障部队第九〇九医院 Negative pressure pipeline joint welding method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488972A1 (en) * 1980-08-22 1982-02-26 Petroles Cie Francaise METHOD OF INTERVENTION ON A CONDUIT TRANSPORTING A FLUID IN PARTICULAR ON A DRIVING CONDUCT
GB2270729A (en) * 1992-08-27 1994-03-23 Century Associates Limited Pipeline pig introducing apparatus
CN110726034A (en) * 2019-10-30 2020-01-24 河南聚匠机械设备安装工程有限公司 Leakage blocking method under pressure
CN113042938A (en) * 2021-02-25 2021-06-29 中国人民解放军联勤保障部队第九〇九医院 Negative pressure pipeline joint welding method

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee