GB1516671A - Plug device for closing a pipeline - Google Patents
Plug device for closing a pipelineInfo
- Publication number
- GB1516671A GB1516671A GB1263375A GB1263375A GB1516671A GB 1516671 A GB1516671 A GB 1516671A GB 1263375 A GB1263375 A GB 1263375A GB 1263375 A GB1263375 A GB 1263375A GB 1516671 A GB1516671 A GB 1516671A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pig
- pipe
- line
- pressure
- bags
- 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
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
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/1283—Plugging pig
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
1516671 Pipe-line closing pigs BROWN & ROOT (UK) Ltd 13 June 1975 [26 March 1975] 12633/75 Heading F2P A plug device for closing off a pipe-line comprises a body for insertion into the pipe-line sealing means encircling the body for sealing engagement with the pipe wall, locking means for holding the body at a required position in the pipe-line, means activated by movement of the plug to measure distance travelled along the pipe-line from a starting position and means responsive to the distance measuring means to effect the expansion of the expandable sealing means. The plug device of Fig. 1 is in the form of a pig comprising a chassis 11, front plate 12, rear plate 13, a plurality of cup rubber 16 retained by bolted flanges 14. A compressed air reservoir supplies expandable sealing bags 21 and pneumatic rams 20, the latter actuating spring biased pawls 22 pivotable to contact the inner surface of the pipe wall. The bags 21 are made of a semi-rigid polyurethane outer casing 26 having a high coefficient of friction with a pipe wall and an expandable inner tubing 27. An airtight housing 50 at the rear of the pig communicates with the pipe-line ahead of the pig through conduit 51a and non-return valve 51 to maintain the housing at the same pressure as that of the pipe-line ahead of the pig. In use the pig is inserted front end first into one end of a flooded pipe-line and that end is then closed with a cap through which compressed air is passed to force the pig along the pipe. An odometer 28 measures the distance travelled by the pig and after a preset distance from a starting position has been reached opens a valve in conduit 30 which causes bags 21 to inflate to retard the pig and pawls 22 to pivot into engagement with the pipe wall to prevent reverse movement of the pig. A pressure sensitive switch in housing 50 activates a sonic pinger 34, when the pressure in front of the pig reaches a predetermined level, whose signals are picked up by external microphones causing the compressed air source driving the pig to be switched off. A second pressure sensitive switch mounted on the rear end of the pig may then operate when the pressure of the drained section behind the pig has reached a desired level, to vent the pressure in rams 20 and bags 21 by opening suitably disposed valves and regulator 37 maintains the pressure in conduits 31 and 32 at a predetermined level above the pressure in front of the pig. In an alternative embodiment rams 20 are omitted and the pawls 22 are merely spring loaded.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1263375A GB1516671A (en) | 1975-03-26 | 1975-03-26 | Plug device for closing a pipeline |
DK284975A DK137869B (en) | 1975-03-26 | 1975-06-24 | Plug means for closing a pipeline. |
NL7507577A NL7507577A (en) | 1975-03-26 | 1975-06-25 | PLUG FOR CLOSING A PIPELINE. |
DE19752529551 DE2529551C3 (en) | 1975-03-26 | 1975-07-02 | Device for emptying and shutting off a certain section of a pipeline |
NO752415A NO752415L (en) | 1975-03-26 | 1975-07-03 | |
FR7521029A FR2305678A1 (en) | 1975-03-26 | 1975-07-04 | PLUG FOR CLOGGING A PIPING AND IN PARTICULAR A SUBMERSIBLE PIPING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1263375A GB1516671A (en) | 1975-03-26 | 1975-03-26 | Plug device for closing a pipeline |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1516671A true GB1516671A (en) | 1978-07-05 |
Family
ID=10008297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1263375A Expired GB1516671A (en) | 1975-03-26 | 1975-03-26 | Plug device for closing a pipeline |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2529551C3 (en) |
DK (1) | DK137869B (en) |
FR (1) | FR2305678A1 (en) |
GB (1) | GB1516671A (en) |
NL (1) | NL7507577A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2211265A (en) * | 1987-10-17 | 1989-06-28 | Int Pipeline Prod Ltd | Pipe stopper |
WO2001016518A1 (en) * | 1999-09-01 | 2001-03-08 | Sarco Stopper Limited | Inflatable stopper |
WO2007069911A1 (en) | 2005-12-15 | 2007-06-21 | Tdw Offshore Services As | Smartdump - high pressure side of plug |
CN109016305A (en) * | 2018-09-06 | 2018-12-18 | 陈烈 | A kind of high voltage bearing lining of pipe line molding machine and its forming method |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2461879A1 (en) * | 1979-07-24 | 1981-02-06 | Petroles Cie Francaise | METHOD OF INTERVENTION ON DIGITAL GAS DRIVE BY MOMENTANEOUS PARTIAL WATER SUPPLY OF SAID DRIVING |
FR2550846A1 (en) * | 1983-08-18 | 1985-02-22 | Renvoise Jacques | Device for shutting off ducts and pipes and for monitoring the ducted products |
DE102015005493B4 (en) * | 2015-04-30 | 2024-03-21 | Airbus Defence and Space GmbH | Fluid line |
-
1975
- 1975-03-26 GB GB1263375A patent/GB1516671A/en not_active Expired
- 1975-06-24 DK DK284975A patent/DK137869B/en unknown
- 1975-06-25 NL NL7507577A patent/NL7507577A/en not_active Application Discontinuation
- 1975-07-02 DE DE19752529551 patent/DE2529551C3/en not_active Expired
- 1975-07-04 FR FR7521029A patent/FR2305678A1/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2211265A (en) * | 1987-10-17 | 1989-06-28 | Int Pipeline Prod Ltd | Pipe stopper |
GB2211265B (en) * | 1987-10-17 | 1992-05-13 | Int Pipeline Prod Ltd | Pipe stopper |
WO2001016518A1 (en) * | 1999-09-01 | 2001-03-08 | Sarco Stopper Limited | Inflatable stopper |
WO2007069911A1 (en) | 2005-12-15 | 2007-06-21 | Tdw Offshore Services As | Smartdump - high pressure side of plug |
CN109016305A (en) * | 2018-09-06 | 2018-12-18 | 陈烈 | A kind of high voltage bearing lining of pipe line molding machine and its forming method |
CN109016305B (en) * | 2018-09-06 | 2023-05-12 | 陈烈 | High-pressure-resistant pipeline lining forming device and forming method thereof |
Also Published As
Publication number | Publication date |
---|---|
DK284975A (en) | 1976-09-27 |
DE2529551B2 (en) | 1979-01-18 |
DK137869B (en) | 1978-05-22 |
DE2529551A1 (en) | 1976-09-30 |
DE2529551C3 (en) | 1979-09-06 |
DK137869C (en) | 1978-10-23 |
FR2305678B1 (en) | 1981-02-06 |
FR2305678A1 (en) | 1976-10-22 |
NL7507577A (en) | 1976-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |