WO2011019808A1 - Speed control drive section with failsafe valve - Google Patents
Speed control drive section with failsafe valve Download PDFInfo
- Publication number
- WO2011019808A1 WO2011019808A1 PCT/US2010/045158 US2010045158W WO2011019808A1 WO 2011019808 A1 WO2011019808 A1 WO 2011019808A1 US 2010045158 W US2010045158 W US 2010045158W WO 2011019808 A1 WO2011019808 A1 WO 2011019808A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- bypass flow
- drive section
- pipeline
- failsafe
- Prior art date
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
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/38—Constructional aspects of the propulsion means, e.g. towed by cables driven by fluid pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2496—Self-proportioning or correlating systems
- Y10T137/2559—Self-controlled branched flow systems
- Y10T137/2574—Bypass or relief controlled by main line fluid condition
Definitions
- This invention relates generally to inline inspection tools and techniques used to inspect piping and pipelines. More specifically, the invention relates to devices for controlling the speed of an inline inspection tool as the tool travels through a pipe.
- Inline inspection tools and techniques are widely used in the piping and pipeline industry to provide information on the wall conditions of pipes. For example, as a magnetic flux leakage tool travels through the interior of the pipe, a magnetic circuit is created between the pipe wall and the tool. The magnetic flux saturates the wall and sensors located on the tool sense and collect data on flux leakage and interruptions in the magnetic circuit. The data are then analyzed to identify where metal loss has occurred due to corrosion, gouges, or other defects and determine the size of the metal loss at each location.
- Passive control devices use pressure flow to actuate a primary bypass flow control valve that allows more or less product flow through the tool.
- Active control devices generally employ some combination of electrical, mechanical, or hydraulic means to actuate the bypass flow control valve. In some cases, however, the valve may fail while it is in the open position, causing the tool to stop moving.
- a system and method for retrieving a pipeline tool from an interior space of a pipeline includes a speed control drive section that uses a primary bypass flow control valve to regulate bypass flow through the drive section.
- the primary valve is in communication with a controller that moves the primary valve fore and aft in response to deviations in speed of the drive section (or a tool being towed by the drive section).
- a failsafe valve is located in the bypass flow passageway and is held in an open position by a retaining means.
- the retaining means is responsive to a timed event, such as a predetermined amount of time for the tool to remain in the pipeline, or to a failure event, such as the primary valve failing in the opened position and the drive section no longer moving forward.
- the retaining means releases the failsafe valve, allowing the failsafe valve to move to a closed position.
- the failsafe valve prevents bypass flow through the drive section or limits the amount of bypass flow to a predete ⁇ nined minimum amount. In either case, the resulting pressure differential is sufficient for driving the drive section forward in the pipeline.
- FIG. 1 is a cross-section view of an embodiment of a speed control drive section that includes a primary bypass control valve located in a throat area of the central flow passageway of the drive section and a failsafe valve located forward of the primary bypass control valve.
- the primary bypass control valve is in the closed position, thereby allowing for a minimum amount of bypass flow through the drive section.
- the failsafe valve is in the open position, thereby not affecting the amount of bypass flow through the drive section.
- the drive section includes means for towing an inline inspection tool.
- FIG. 2 is a cross section view of the speed control drive section of FIG. 1 illustrating the primary bypass flow control valve in the partially open position, thereby allowing an appropriate amount of bypass flow through the drive section.
- a notched portion of the failsafe valve receives a pin that holds the valve in the open position.
- FIG. 3 is a cross section view of the speed control drive section of FIG. 1 illustrating the primary bypass flow control valve remaining in the fully open position due to a valve failure and the failsafe valve, in response, actuating to a fully closed position.
- the pin holding the failsafe valve in the open position retracts and closes the valve.
- the failsafe valve limits the amount of bypass flow through the drive section so that the drive section may move forward through the pipeline under differential pressure.
- FIG. 4 is a view of the speed control drive section of FIG. 1 taken along section line 4-4 of FIG. 2.
- FIG. 5 is a view of the forward end of the drive section of FIG. 1 taken along section line line 1-1 of FIG. 1.
- FIG. 6 is a view of the forward end of the drive section of FIG. 1 taken along section line 6-6 of FIG. 3.
- the failsafe valve is in its fully closed position.
- FIG. 7 is a view of the rearward end of the drive section of FIG. 1 taken along section line 7-7 ofFIG. 1.
- FIG. 8 is a view of the rearward portion of the speed control drive section of FIG. 1 taken along section line 8-8 of FIG. 2.
- a drive section 10 includes a longitudinal body 11 having a central passageway 17 therethrough.
- the drive section 10 may be a pipeline cleaning, inspection or maintenance tool or may have towing means 23 for towing a tool such as a magnetic flux leakage inspection tool (not shown).
- Driving cups 21A and 21B are mounted at forward end 13 and rearward end 15 of body 11, respectively.
- the driving cups 21 are of a type well-known in the art and provide sealing engagement with the inner wall surface of the pipeline in order to propel drive section 10 (and any tool being towed) forward under differential fluid pressure. Gas or liquid product flow enters drive section 10 at its rearward end 15 and is allowed to flow toward a reduced throat area 19 of central passageway 17.
- Odometer 25 monitors the speed of the tool or drive section 10 and sends the speed data to a controller 27.
- Controller 27 may be mounted on drive section 10 or on a tool being towed by drive section 10. Also onboard the drive section but not illustrated here are standard components such as batteries and auxiliary sensors to monitor pressures.
- a primary bypass flow control valve 30 is located at the rearward end 15 of body 11.
- primary valve 30 is a plug valve.
- the external surface of primary valve 30 is preferably shaped in relation to the profile of the reduced throat area 19 of central passageway 17.
- Controller 27 sends signals to primary valve 30 in response to deviations in speed of the tool or drive section 10 relative to a desired target speed.
- the primary valve 30 then moves fore and aft, opening and closing the throat area 19 to allow more or less bypass flow through passageway 17, thereby adjusting the speed of drive section 10.
- a failsafe valve 50 is located toward the forward end 13 of body 11. Failsafe valve 50 is actuated in cases in which primary valve 30 has failed, thereby providing a means to retrieve drive section 10 and any associated tools from the interior of the pipeline.
- failsafe valve Prior to deploying drive section 10 into the pipeline, failsafe valve is placed under the control of a controller 27.
- the controller 27 is programmed to release the failsafe valve under prescribed failure conditions, for example, a fixed time duration that is several hours longer than the planned inspection time for the pipeline. Should primary valve 30 fail in the open position, the failsafe valve 50 would close, bypass flow through central passageway 17 would be inhibited or reduced; and drive section 10 would begin moving forward.
- failsafe valve 50 is a butterfly-type valve having a spring- loaded hinge 55 opposing leaves 53 A and 53B.
- a divider housing 51 houses a retaining means 57 for holding failsafe valve 50 in a fully opened position.
- Retaining means 57 may be a pin 59 in contact with a pin receiver 61 located on one of the leaves 53.
- pin 59 retracts from pin receiver 61 and the leaves 53 substantially instantaneously move between the opened and closed positions.
- failsafe valve 50 prevents bypass flow from flowing through central passageway 17 or may limit the amount of bypass flow to a predetermined minimum.
- Differential pressure across the closed leaves 53 of failsafe valve 50 serve to reinforce the closing forces on the valve 50 provided by spring-loaded hinge 55.
Landscapes
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Pipeline Systems (AREA)
- Retry When Errors Occur (AREA)
- Pipe Accessories (AREA)
- Mechanically-Actuated Valves (AREA)
- Details Of Valves (AREA)
- Flow Control (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080045281.2A CN102549326B (en) | 2009-08-12 | 2010-08-11 | Speed control drive section with failsafe valve |
EP10808687.7A EP2464909B1 (en) | 2009-08-12 | 2010-08-11 | Speed control drive section with failsafe valve |
AU2010282557A AU2010282557B2 (en) | 2009-08-12 | 2010-08-11 | Speed control drive section with failsafe valve |
CA2773613A CA2773613C (en) | 2009-08-12 | 2010-08-11 | Speed control drive section with failsafe valve |
SG2012016341A SG179046A1 (en) | 2009-08-12 | 2010-08-11 | Speed control drive section with failsafe valve |
ZA2012/01729A ZA201201729B (en) | 2009-08-12 | 2012-03-09 | Speed control drive sesction with failsafe valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/539,696 | 2009-08-12 | ||
US12/539,696 US8479345B2 (en) | 2009-08-12 | 2009-08-12 | Speed control drive section with failsafe valve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011019808A1 true WO2011019808A1 (en) | 2011-02-17 |
Family
ID=43586451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/045158 WO2011019808A1 (en) | 2009-08-12 | 2010-08-11 | Speed control drive section with failsafe valve |
Country Status (8)
Country | Link |
---|---|
US (1) | US8479345B2 (en) |
EP (1) | EP2464909B1 (en) |
CN (1) | CN102549326B (en) |
AU (1) | AU2010282557B2 (en) |
CA (2) | CA2773613C (en) |
SG (1) | SG179046A1 (en) |
WO (1) | WO2011019808A1 (en) |
ZA (1) | ZA201201729B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US9222612B2 (en) * | 2012-01-06 | 2015-12-29 | Vadxx Energy LLC | Anti-fouling apparatus for cleaning deposits in pipes and pipe joints |
RU2014134429A (en) | 2012-02-09 | 2016-04-10 | Вадэксэкс Энерджи Ллс | ZONE-DIMENSIONAL PYROLYSIS APPARATUS FOR POLYMERIC WASTE PROCESSING |
BR112014020088A8 (en) | 2012-02-15 | 2017-07-11 | Vadxx Energy LLC | ZONE-DELINED PYROLYSIS APPARATUS WITH DOUBLE, STAGE |
CN108057693A (en) * | 2016-11-08 | 2018-05-22 | 通用电气公司 | Deposit removal device and method, deposit removal system |
CN106269734B (en) * | 2016-11-14 | 2018-08-21 | 西南石油大学 | A kind of wiper that there is speed governing step by step and prevent liquid reflux function |
CN106890748B (en) * | 2017-04-19 | 2023-03-31 | 西南石油大学 | Film coating pipe cleaner with emergency starting system and using method thereof |
AU2019477996A1 (en) * | 2019-12-13 | 2022-02-24 | Halliburton Energy Services, Inc. | Method and system to determine variations in a fluidic channel |
CN112178358A (en) * | 2020-09-24 | 2021-01-05 | 中石油西北联合管道有限责任公司 | Three-dimensional ultrahigh-definition pipeline magnetic flux leakage internal detector |
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-
2009
- 2009-08-12 US US12/539,696 patent/US8479345B2/en not_active Expired - Fee Related
-
2010
- 2010-08-11 CA CA2773613A patent/CA2773613C/en active Active
- 2010-08-11 WO PCT/US2010/045158 patent/WO2011019808A1/en active Application Filing
- 2010-08-11 SG SG2012016341A patent/SG179046A1/en unknown
- 2010-08-11 AU AU2010282557A patent/AU2010282557B2/en not_active Expired - Fee Related
- 2010-08-11 EP EP10808687.7A patent/EP2464909B1/en active Active
- 2010-08-11 CN CN201080045281.2A patent/CN102549326B/en not_active Expired - Fee Related
- 2010-08-11 CA CA2975216A patent/CA2975216C/en active Active
-
2012
- 2012-03-09 ZA ZA2012/01729A patent/ZA201201729B/en unknown
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US6070285A (en) * | 1996-07-18 | 2000-06-06 | Shell E & P Technology Company | Pipe cleaning apparatus for oil or gas pipelines |
US6098231A (en) * | 1997-06-12 | 2000-08-08 | Pii Limited | Pipeline pigs |
US6880195B1 (en) * | 1999-04-17 | 2005-04-19 | P.A.C.T. Engineering (Scotland) Limited | Pipe cleaning device |
Also Published As
Publication number | Publication date |
---|---|
CA2773613C (en) | 2017-09-12 |
CN102549326A (en) | 2012-07-04 |
AU2010282557B2 (en) | 2015-07-16 |
EP2464909A4 (en) | 2017-05-03 |
ZA201201729B (en) | 2012-11-28 |
EP2464909A1 (en) | 2012-06-20 |
EP2464909B1 (en) | 2019-06-19 |
AU2010282557A1 (en) | 2012-04-05 |
US8479345B2 (en) | 2013-07-09 |
CA2975216A1 (en) | 2011-02-17 |
SG179046A1 (en) | 2012-04-27 |
CA2773613A1 (en) | 2011-02-17 |
CN102549326B (en) | 2015-04-01 |
US20110036407A1 (en) | 2011-02-17 |
CA2975216C (en) | 2020-07-28 |
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