CN202708601U - Leakage detecting device for external oil-gas pipeline - Google Patents

Leakage detecting device for external oil-gas pipeline Download PDF

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Publication number
CN202708601U
CN202708601U CN 201220409846 CN201220409846U CN202708601U CN 202708601 U CN202708601 U CN 202708601U CN 201220409846 CN201220409846 CN 201220409846 CN 201220409846 U CN201220409846 U CN 201220409846U CN 202708601 U CN202708601 U CN 202708601U
Authority
CN
China
Prior art keywords
piston
seat board
piezoelectric
infrasonic wave
detecting
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 - Fee Related
Application number
CN 201220409846
Other languages
Chinese (zh)
Inventor
聂炳林
李小龙
刘志刚
迟国安
吴楠
高佩旺
赵文海
王燕萍
陈文娟
程绪美
李向红
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.)
Offshore Oil Engineering Technology Testing Center of Sinopec Shengli Petroleum Administration Bureau
Original Assignee
Offshore Oil Engineering Technology Testing Center of Sinopec Shengli Petroleum Administration Bureau
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 Offshore Oil Engineering Technology Testing Center of Sinopec Shengli Petroleum Administration Bureau filed Critical Offshore Oil Engineering Technology Testing Center of Sinopec Shengli Petroleum Administration Bureau
Priority to CN 201220409846 priority Critical patent/CN202708601U/en
Application granted granted Critical
Publication of CN202708601U publication Critical patent/CN202708601U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to the technical field for the detection of an oil pipeline, in particular to a leakage detecting device for an external oil-gas pipeline. The leakage detecting device consists of two parts, i.e. a docking mechanism and a detecting mechanism, wherein the docking mechanism comprises a flange plate, a piston cylinder, a piston, a base plate and a cover plate; and the detecting mechanism is formed by the means that two sets of infrasonic wave piezoelectric sensors are connected with a piezoelectric detector by a conductive electrode plate between the two sets of infrasonic wave piezoelectric sensors. As the leakage detecting device adopts a mature infrasonic wave piezoelectric sensing technology and the specific docking mechanism, the infrasonic wave generated by the leakage of liquid in the pipeline is directly fed back to the piezoelectric sensors in the pipeline through an oil-gas medium in the pipeline, so that the problem of an external pipeline wall sound wave detecting technology can be avoided in cooperation with the external piezoelectric detector, therefore, the leakage detecting device is longer in detecting distance, better in antijamming capability, and higher in detecting efficiency. The leakage detecting device is reasonable in whole structure design, and convenient to use.

Description

External oil and gas pipeline leakage detection device
Technical field
The utility model relates to petroleum pipeline detection technique field, is specifically related to a kind of external oil and gas pipeline leakage detection device.
Background technique
Because the oil and gas pipeline of field produces is located at the field more, pipeline corrodes dual corrosion impact from oil gas in external corrosion and the pipe, causes easily pipeline to occur leaking.Can detect by the mode of manual inspection and detection flow for a large amount of leakages, and just be difficult to realize for slight leakage.For the slight detection of leaking of oil and gas pipes, at present many employings attach the detection modes of acoustic detector (being sound wave piezoelectric transducer and piezoelectric detection instrument) at pipeline outer wall.There are two insoluble drawbacks in this detection mode, and the one, acoustic detector is subjected to the external environment condition noise effect; The 2nd, sound wave is large by the metal pipe-wall transmitting attenuation, distance is short, causes testing precision and detection efficiency low.
The model utility content
The purpose of this utility model is exactly the defective that exists for prior art, provides a kind of testing precision and detection efficiency high external oil and gas pipeline leakage detection device.
Its technological scheme is: be comprised of docking mechanism and feeler mechanism's two-part, wherein, docking mechanism is to be fixed with piston cylinder at the flange plate downside with center hole, be provided with and piston cylinder sealed sliding piston movingly near the flange plate central hole in the piston cylinder, the piston cylinder of the below of the piston seat board that is threaded, form cavity between piston and the seat board, connect cover plate in the bottom of piston cylinder, form the instrument storehouse between seat board and the cover plate; Feeler mechanism is connected to form by conductive plate and the piezoelectric detection instrument of two groups of infrasonic wave piezoelectric transducers by therebetween; In cavity and form extruding and cooperate, the piezoelectric detection instrument is located in the instrument storehouse by whole installation for two groups of infrasonic wave piezoelectric transducers and conductive plate therebetween; The earth electrode of two groups of infrasonic wave piezoelectric transducers forms ground connection with piston and seat board respectively and docks, middle conductive plate is drawn wire, this wire is incorporated into access piezoelectric detection instrument behind the instrument storehouse after passing seat board, and the earth electrode of piezoelectric detection instrument directly accesses on the piston cylinder by wire.
Such scheme also comprises: piston lower surface is fixed with positioning shaft, the central channel that arranges on positioning shaft lower end and the seat board or hole form to peg graft and cooperate, be respectively equipped with the circular groove of pegging graft and cooperating with the infrasonic wave piezoelectric transducer at piston and the opposing side of seat board, the outer wall of positioning shaft is provided with isolation layer, two groups of infrasonic wave piezoelectric transducers and conductive plate are ring structure, and are sleeved on outside the isolation layer of positioning shaft.
Describedly offer through hole at base plate.
The utility model is owing to adopted the infrasonic wave Piezoelectric sensing technique of technology maturation and special docking mechanism, with the infrasonic wave of pipeline inner fluid because of the leakage generation, directly feed back to the interior piezoelectric transducer of pipe by managing interior oil gas medium, cooperate outside piezoelectric detection instrument, avoided the outer existing problem of sonic detection technology of tube wall, so that it is longer to detect distance, antijamming capability more, it is stronger to detect usefulness.Its overall construction design is reasonable, easy to use.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model structural drawing.
Embodiment
With reference to Fig. 1, a kind of external oil and gas pipeline leakage detection device is comprised of docking mechanism and feeler mechanism's two-part.Wherein, docking mechanism is to be fixed with piston cylinder 14 at flange plate 2 downsides with center hole 1, piston cylinder 14 interior close flange plate center hole 1 places are provided with and piston cylinder sealed sliding piston 5 movingly, the piston cylinder 14 of the below of piston 5 seat board 9 that is threaded, form cavity between piston 5 and the seat board 9, bottom at piston cylinder 14 connects cover plate 13, forms the instrument storehouse between seat board 13 and the cover plate 9.Feeler mechanism is connected to form with piezoelectric detection instrument 11 by the conductive plate 7 by therebetween of two groups of infrasonic wave piezoelectric transducers (or claiming piezoelectric ceramic) 8 up and down.In cavity and form extruding and cooperate, piezoelectric detection instrument 11 is located in the instrument storehouse by whole installation for two groups of infrasonic wave piezoelectric transducers 8 and conductive plate therebetween 7.The earth electrode of two groups of infrasonic wave piezoelectric transducers 8 forms ground connection with piston 5 and seat board 9 respectively and docks, middle conductive plate 7 is drawn wire 10, this wire 10 is incorporated into access piezoelectric detection instrument 11 behind the instrument storehouse after passing seat board 9, and the earth electrode of piezoelectric detection instrument 11 directly accesses on the piston cylinder 14 by earth lead 16.On the flange plate 2 with screw 3.
On the basis of above-described embodiment: piston 5 lower end surfaces are fixed with positioning shaft 15, the central channel that arranges on positioning shaft 15 lower ends and the seat board 9 or hole form to peg graft and cooperate, be respectively equipped with the circular groove of pegging graft and cooperating with infrasonic wave piezoelectric transducer 8 at piston 4 and the opposing side of seat board 9, the outer wall of positioning shaft 15 is provided with isolation layer 6, two groups of infrasonic wave piezoelectric transducers 8 and conductive plate 7 are ring structure, and are sleeved on outside the isolation layer 6 of positioning shaft 15.The purpose of setting up this technology contents is that infrasonic wave piezoelectric transducer 8 is positioned, and guarantees that it can be over against pipeline.
Can also offer through hole 13 at base plate 12 in addition, make things convenient for optical viewer or instrument is connected with other external equipment.In order to increase the sealing between piston 5 and the piston cylinder 14, set up seal ring 4 in its connecting part.
Test section with this device during use is positioned at the pipeline outside, flange plate docks with piping flange, in time will be delivered on the infrasonic wave piezoelectric transducer because revealing the sound wave that produces from the oil gas medium in the pipeline, can whether leakage be arranged the Real-Time Monitoring oil and gas pipes by supporting piezoelectric detection instrument again.This design not only is fit to pipe detection, also can be used for valve detection.

Claims (3)

1. an external oil and gas pipeline leakage detection device is comprised of docking mechanism and feeler mechanism's two-part, and feeler mechanism is connected to form by conductive plate and the piezoelectric detection instrument of two groups of infrasonic wave piezoelectric transducers by therebetween; It is characterized in that: docking mechanism is to be fixed with piston cylinder at the flange plate downside with center hole, be provided with and piston cylinder sealed sliding piston movingly near the flange plate central hole in the piston cylinder, the piston cylinder of the below of the piston seat board that is threaded, form cavity between piston and the seat board, bottom at piston cylinder connects cover plate, forms the instrument storehouse between seat board and the cover plate; In cavity and form extruding and cooperate, the piezoelectric detection instrument is located in the instrument storehouse by whole installation for two groups of infrasonic wave piezoelectric transducers and conductive plate therebetween; The earth electrode of two groups of infrasonic wave piezoelectric transducers forms ground connection with piston and seat board respectively and docks, middle conductive plate is drawn wire, this wire is incorporated into access piezoelectric detection instrument behind the instrument storehouse after passing seat board, and the earth electrode of piezoelectric detection instrument directly accesses on the piston cylinder by wire.
2. external oil and gas pipeline leakage detection device according to claim 1, it is characterized in that: piston lower surface is fixed with positioning shaft, the central channel that arranges on positioning shaft lower end and the seat board or hole form to peg graft and cooperate, be respectively equipped with the circular groove of pegging graft and cooperating with the infrasonic wave piezoelectric transducer at piston and the opposing side of seat board, the outer wall of positioning shaft is provided with isolation layer, two groups of infrasonic wave piezoelectric transducers and conductive plate are ring structure, and are sleeved on outside the isolation layer of positioning shaft.
3. external oil and gas pipeline leakage detection device according to claim 1 and 2 is characterized in that: offer through hole at base plate.
CN 201220409846 2012-08-18 2012-08-18 Leakage detecting device for external oil-gas pipeline Expired - Fee Related CN202708601U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220409846 CN202708601U (en) 2012-08-18 2012-08-18 Leakage detecting device for external oil-gas pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220409846 CN202708601U (en) 2012-08-18 2012-08-18 Leakage detecting device for external oil-gas pipeline

Publications (1)

Publication Number Publication Date
CN202708601U true CN202708601U (en) 2013-01-30

Family

ID=47588903

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220409846 Expired - Fee Related CN202708601U (en) 2012-08-18 2012-08-18 Leakage detecting device for external oil-gas pipeline

Country Status (1)

Country Link
CN (1) CN202708601U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103245381A (en) * 2013-04-28 2013-08-14 中国石油大学(北京) Detecting device for diameter of oil and gas pipeline
CN104100843A (en) * 2014-07-17 2014-10-15 北京亿利高科生物工程技术研究所有限公司 Infrasonic wave sensor for oil and gas pipeline leakage monitoring
CN106247172A (en) * 2016-08-31 2016-12-21 辽宁鑫磊检测技术有限公司 A kind of pipe detection device and using method
CN110174465A (en) * 2019-05-27 2019-08-27 武汉科技大学 A kind of small internal leakage device of on-line monitoring hydraulic cylinder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103245381A (en) * 2013-04-28 2013-08-14 中国石油大学(北京) Detecting device for diameter of oil and gas pipeline
CN103245381B (en) * 2013-04-28 2016-02-24 中国石油大学(北京) A kind of oil and gas pipes latus rectum pick-up unit
CN104100843A (en) * 2014-07-17 2014-10-15 北京亿利高科生物工程技术研究所有限公司 Infrasonic wave sensor for oil and gas pipeline leakage monitoring
CN106247172A (en) * 2016-08-31 2016-12-21 辽宁鑫磊检测技术有限公司 A kind of pipe detection device and using method
CN110174465A (en) * 2019-05-27 2019-08-27 武汉科技大学 A kind of small internal leakage device of on-line monitoring hydraulic cylinder

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130130

Termination date: 20140818