GB2246409A - Pipe closing device - Google Patents

Pipe closing device Download PDF

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Publication number
GB2246409A
GB2246409A GB9016039A GB9016039A GB2246409A GB 2246409 A GB2246409 A GB 2246409A GB 9016039 A GB9016039 A GB 9016039A GB 9016039 A GB9016039 A GB 9016039A GB 2246409 A GB2246409 A GB 2246409A
Authority
GB
United Kingdom
Prior art keywords
pipe
closing device
ram
pipe closing
funnel
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.)
Granted
Application number
GB9016039A
Other versions
GB9016039D0 (en
GB2246409B (en
Inventor
Patrick Gilmore
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
Priority to GB9016039A priority Critical patent/GB2246409B/en
Publication of GB9016039D0 publication Critical patent/GB9016039D0/en
Publication of GB2246409A publication Critical patent/GB2246409A/en
Application granted granted Critical
Publication of GB2246409B publication Critical patent/GB2246409B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0085—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for explosive-powered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/20—Pliers for sealing
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipe Accessories (AREA)

Abstract

A pipe closing device comprising a housing 19 which fits around a selected pipe 14. To close the pipe 14 a bullet is fired at the firing pin 16, being helped to home onto the target by the funnel 17. Upon detonation the explosion forces the ram 11 against the pipe 14 and towards the former 8. When the pipe 14 is closed the ram 11 is locked by two spring loaded pins 12 seating into the groove in the ram. <IMAGE>

Description

PIPE CLOSING DEVICE This invention relates to a pipe closing device.
Normal practice for emergency stopping of a flow in a pipe is to fit valves which are operated manually or by signal and then hydraulically, pneumatically, electrically, mechanically or other means.
Occasions arise when none of these methods are possible, for example when an offshore oil or gas installation has to be abandoned because of fire. The present invention would then come into use to shut off the oil or gas supply to the rig.
The pipe closing device would be fitted on the selected pipe on a permanent basis in case of emergency.
It would then require someone to shoot a bullet into the funnel to activate the device and close the pipe.
According to the present invention there is provided a pipe closing device comprising a housing which contains at the firing end a spring loaded firing pin, which acts on a detonator in the chamber which contains an explosive charge.
Upon detonation the explosion forces a ram, fitted at the front end with a former,against the selected pipe pushing it against the second former and thus closing the pipe diametrically. At the end of the ram stroke two spring loaded pins seat into a machined groove in the ram, thus locking the ram against the pipe.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: FIGURE 1 - Shows a front elevation of the pipe closing device with the funnel not shown attached.
FIGURE 2 - Shows a sectioned side elevation of the pipe closing device with the funnel in position.
FIGURE 3 - Shows a sectional plan view of the pipe closing device with the ram set for firing.
FIGURE 4 - Shows a sectional plan view of the pipe closing device after firing.
FIGURE 5 - Shows an isometric view of the pipe closing device to pictorally show how it fits on the selected pipe.
Referring to the drawings, the pipe closing device comprises a housing 19 which is designed with guides 7 to centralize the selected pipe 14.
The housing 19 is placed around the selected pipe .14 and the former 8 is slid into position and locked with the nut 9.
The whole pipe closing device would sit on a pipe clamp on the selected pipe 14.
When required to be activated a bullet is fired into the funnel 17 and is diverted onto the firing pin 16 which strikes the detonator 15.
The resulting explosion of the charge 20 forces the ram 11 into the pipe 14 and toward the former 8.
When the pipe 14 is closed, the ram 11 is in a position to allow two spring loaded pins 12 to seat into the groove in the ram 11, effectively locking the ram 11 on a closed pipe 14.

Claims (6)

1. A pipe closing device comrising two opposed formers which are assembled around the selected pipe.
2. A pipe closing device as claimed in claim 1, wherein formers are forced together to squeeze the wall of the pipe diametrically closed.
3. A pipe closing device as claimed in any preceding claim wherein a ram is forced by explosive power against the selected pipe with sufficient force to crush the pipe diametrically, thus sealing the pipe.
4. A pipe closing device as claimed in any preceding claim wherein the locking of the ram is achieved by means of spring loaded pins which seat into a groove in the ram.
5. A pipe closing device as claimed in any preceding claim wherein a fabricated funnel is fitted to facilate the detonation of the explosive by diverting the bullet onto the firing pin.
6. A pipe closing device substantially, as described herein with reference to figures 1-5 of the accompanying drawings.
GB9016039A 1990-07-20 1990-07-20 Pipe closing device Expired - Fee Related GB2246409B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9016039A GB2246409B (en) 1990-07-20 1990-07-20 Pipe closing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9016039A GB2246409B (en) 1990-07-20 1990-07-20 Pipe closing device

Publications (3)

Publication Number Publication Date
GB9016039D0 GB9016039D0 (en) 1990-09-05
GB2246409A true GB2246409A (en) 1992-01-29
GB2246409B GB2246409B (en) 1995-05-10

Family

ID=10679442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9016039A Expired - Fee Related GB2246409B (en) 1990-07-20 1990-07-20 Pipe closing device

Country Status (1)

Country Link
GB (1) GB2246409B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265199A (en) * 1992-03-09 1993-09-22 Robert Brian Warren Restricting fluid flow in a pipe
FR2775771A1 (en) * 1998-03-05 1999-09-10 Nobel Explosifs France Explosion trap for bulk explosives pumping circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517907A (en) * 1967-09-25 1970-06-30 Bendix Corp Tube closure device
GB1545350A (en) * 1976-04-29 1979-05-10 Commissariat Energie Atomique Explosive-forming device for the obturation of a pipe
GB2216624A (en) * 1988-03-08 1989-10-11 British Petroleum Co Plc Method for sealing a metallic tubular member
GB2221749A (en) * 1988-07-30 1990-02-14 British Petroleum Co Plc Equipment for sealing a metallic member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517907A (en) * 1967-09-25 1970-06-30 Bendix Corp Tube closure device
GB1545350A (en) * 1976-04-29 1979-05-10 Commissariat Energie Atomique Explosive-forming device for the obturation of a pipe
GB2216624A (en) * 1988-03-08 1989-10-11 British Petroleum Co Plc Method for sealing a metallic tubular member
GB2221749A (en) * 1988-07-30 1990-02-14 British Petroleum Co Plc Equipment for sealing a metallic member

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265199A (en) * 1992-03-09 1993-09-22 Robert Brian Warren Restricting fluid flow in a pipe
FR2775771A1 (en) * 1998-03-05 1999-09-10 Nobel Explosifs France Explosion trap for bulk explosives pumping circuit
BE1013718A3 (en) * 1998-03-05 2002-07-02 Nobel Explosifs France Device for circuit breaker detonation pumping of explosives in bulk.
ES2177356A1 (en) * 1998-03-05 2002-12-01 Nobel Explosifs France Explosion trap for bulk explosives pumping circuit

Also Published As

Publication number Publication date
GB9016039D0 (en) 1990-09-05
GB2246409B (en) 1995-05-10

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Legal Events

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

Effective date: 19950810