CN108760162A - leakage detection device and method - Google Patents
leakage detection device and method Download PDFInfo
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- CN108760162A CN108760162A CN201810497984.7A CN201810497984A CN108760162A CN 108760162 A CN108760162 A CN 108760162A CN 201810497984 A CN201810497984 A CN 201810497984A CN 108760162 A CN108760162 A CN 108760162A
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- detection line
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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Abstract
A kind of leakage detection device of present invention offer and method, wherein device include：Signal transceiver and cable, wherein cable includes ontology, detection line and the locating part positioned at outer body；Ontology includes reaction part, and detection line is wrapped in reaction part, detection line extruding locating part is expanded against after reacting part oil suction, so that detection line is bent；Signal transceiver is connect with detection line；Signal transceiver is used to send detection signal to detection line, and receives reflection signal when detection signal transmits in detection line, to judge whether detection line bends according to reflection signal.Above-mentioned apparatus is simple in structure, and reliability is high, can find oil leak event in time, the transport of effective guarantee oil product and safe to use.
Description
Technical field
The present invention relates to petroleum technology field more particularly to a kind of leakage detection device and methods.
Background technology
Due to the economic value and danger of oil product, determine that leak detection is carried out to it has unusual meaning.
As the increase of service life, external environment corrode, oil storage tank and oil pipeline are likely to occur leakage accident at any time.Leak thing
Therefore the wasting of resources and environmental pollution are not only resulted in, it can also cause fire and explosion accident when serious, so timely and reliably right
Leakage accident, which carries out alarm, to be particularly important, and therefore, there is an urgent need for a kind of leakage detection devices, to be detected to oil leak.
Invention content
In order to solve the above-mentioned technical problem, a kind of leakage detection device of offer of the embodiment of the present invention and method, with to oil product
Leakage is detected, and finds leakage accident in time, and the safety for improving oil product transport or using reduces accident.
First aspect present invention provides a kind of leakage detection device, including signal transceiver and cable, wherein the cable
Including ontology, detection line and locating part positioned at the outer body；
The ontology includes reaction part, and the detection line is wrapped in the reaction part, is expanded after the reaction part oil suction
The detection line is pushed to squeeze the locating part, so that the detection line is bent；
The signal transceiver is connect with the detection line；The signal transceiver is used to send to the detection line and detect
Signal, and the reflection signal when detection signal transmits in the detection line is received, to be judged according to the reflection signal
Whether the detection line bends.
Further, the ontology further includes being arranged on the outside of the reaction part and being in contra with the detection line
Upward sheath.
Further, the ontology further includes support element, and the reaction part is cylinder, and the support element is arranged described
On the axis for reacting part.
Further, the cross section of the sheath is semicircle, between the detection line and the axis for reacting part
Distance is more than the half of the reaction part radius.
Further, the detection line is optical fiber, and the signal transceiver is optical time domain reflectometer.
Further, the reaction part is oil suction expanded rubber.
Further, the locating part is steel wire, and the steel wire is set around in the shape of a spiral on the ontology.
Further, the lead of screw of the steel wire is 1.5cm to 3cm.
Further, the sheath is engraved structure.
Second aspect of the present invention provides a kind of Oil Leakage Detecting method, and the method is applied to above-mentioned leakage detection device
In, the method includes：
Signal transceiver sends detection signal to detection line, and when receiving the detection signal and being transmitted in the detection line
Reflection signal；
Signal transceiver analyzes the reflection signal, to judge whether the detection line bends；
When the detection line bends, oil accident occurs for judgement；
When the detection line does not bend, oil accident does not occur for judgement.
Leakage detection device provided by the invention and method expand against detection line using reaction part oil suction and move, limiting
Under the action of the part of position so that the part line segment of detection line is limited part blocking, can not continue to move to, so that detection line occurs
Then bending is received reflection signal from detection line by signal transceiver, and is analyzed reflection signal to judge to detect
Whether line bends, and when detection line bends, shows otherwise oil leak accident, which occurs, shows that oil product does not occur to be let out
Leakage accident.Above-mentioned apparatus is simple in structure, and reliability is high, can find oil leak event, the fortune of effective guarantee oil product in time
It is defeated and safe to use.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a structure chart of leakage detection device provided in an embodiment of the present invention；
Fig. 2 a are the cable cross-sectional view provided in an embodiment of the present invention when not occurring oil accident；
Fig. 2 b are the cable part side view provided in an embodiment of the present invention when not occurring oil accident；
Cable part side view when Fig. 3 is generation oil accident provided in an embodiment of the present invention；
Fig. 4 is another structure chart of leakage detection device provided in an embodiment of the present invention；
Fig. 5 is the flow chart of Oil Leakage Detecting method provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
It is the structure chart of leakage detection device provided in an embodiment of the present invention referring to Fig. 1, Fig. 1, Fig. 2 a, Fig. 2 b are respectively this
Cable cross-sectional view when what inventive embodiments provided does not occur oil accident and cable part side view, Fig. 3 are this hair
Cable part side view when the generation oil accident that bright embodiment provides, as shown in Figure 1 to Figure 3, the embodiment of the present invention provides
A kind of leakage detection device, including signal transceiver 1 and cable 2, wherein the cable 22 include ontology, detection line 22 and
Positioned at the locating part 23 of the outer body；The ontology includes reaction part 212, and the detection line 22 is wrapped in the reaction part
The detection line 22 is expanded against in 212, after 212 oil suction of reaction part and squeezes the locating part 23, so that the detection line
22 bendings；The signal transceiver 1 is connect with the detection line 22；The signal transceiver 1 is used to send out to the detection line 22
Signal is surveyed in inspection, and receives the reflection signal when detection signal transmits in the detection line 22, with according to the reflection
Signal judges whether the detection line 22 bends.
Specifically, detection line 22 is wrapped in reaction part 212, such as one and detection line 22 can be set in reacting part 212
Detection line 22 is inserted into the channel by the channel to match, to realize that detection line 22 is wrapped in reaction part 212, specific implementation
Mode does not limit herein.It reacting 212 outside of part and finite place piece 23 is set, locating part 23 is used for the position of defined reaction part 212,
Locating part 23 is equipped with the through-Penetration portion for providing space needed for reaction 212 oil suction of part expansion, i.e. locating part 23 includes limiting section and passes through
Portion is worn, limiting section plays barrier effect to reaction part 212.It is expanded after reacting 212 oil suction of part, expansive force, which can push, to be wrapped in instead
The detection line 22 in part 212 is answered to move, with the prolonged expansion of reaction part 212, detection line 22 continues to move to, and is limited when being moved to
When at part 23, being limited the reaction part 212 of the limiting section blocking of part 23 can not continue to expand outward, and positioned at the reaction of through-Penetration portion
Part 212 continues to expand outward, reacts part 212 at this time under the action of expansive force and locating part 23, and reaction part 212 deforms, due to
Detection line 22 is located in reaction part 212, and therefore, detection line 22 can also be deformed with the deformation of reaction part 212 so that detection line
22 bend at reaction 212 expansion of part.After signal transceiver 1 sends detection signal to detection line 22, detection signal is received
It is curved to would know that whether detection line 22 occurs by analyzing reflection signal for reflection signal when being transmitted in detection line 22
It is bent.Such as detection line 22, when bending, reflection signal when detection signal transmits in detection line 22 is not sent out with detection line 22
When raw bending, reflection signal when detection signal transmits in detection line 22 is different, by not occurring with detection line 22
The reflection signal obtained when bending compares, and it is curved to can determine whether out whether the reflection signal currently obtained shows that detection line 22 occurs
It is bent.As shown in figure 4, in Fig. 4, A is when oil accident not occurring, and the curve that reflection signal is formed on coordinate, B is that oil leak occurs
When accident, the curve that signal is formed on coordinate is reflected.
If detection line 22 bends, illustrate that there are oil leak accidents.In practical applications, cable 2 is laid on
In oil storage tank or petroleum pipeline, and the detection line 22 of 2 one end of cable is connected with signal transceiver 1, so that signal transceiver 1
Detection signal is sent to detection line 22, and receives reflection signal when detection signal transmits in detection line 22, is received convenient for signal
Hair device 1 analyzes reflection signal, to know whether that oil leak accident occurs.
Leakage detection device in the present embodiment expands against detection line 22 using reaction 212 oil suction of part and moves, limiting
Under the action of part 23 so that the part line segment of detection line 22 is limited the blocking of part 23, can not continue to move to, so that detection line
22 bend, and then receive reflection signal from detection line 22 by signal transceiver 1, and analyzed to reflection signal
Judge whether detection line 22 bends, when detection line 22 bends, illustrates otherwise oil leak accident, which occurs, not to be sent out
Oil generation product leakage accident.Above-mentioned apparatus is simple in structure, and reliability is high, can find oil leak event, effective guarantee in time
The transport of oil product and safe to use.
Further, the detection line 22 is optical fiber, and the signal transceiver 1 is optical time domain reflectometer (optical
Time-domain reflectometer, abbreviation OTDR).
Specifically, optical fiber one end is connect with OTDR, under normal circumstances (i.e. without under oil product leakage situation), laser is in a fiber
Be transmitted as parallel transmission.When oil leak occurs for certain position, oil product penetrates into reaction part 212, and reaction part 212 generates instead
It should expand, the place of setting finite place piece 23 is squeezed deformation, and the optical fiber being wrapped in reaction part 212 also becomes therewith
Shape.OTDR can occur to scatter and be reflected to fibre optical transmission laser, when laser transmits in a fiber at this time so that part the reflected beams
It is received by OTDR, OTDR is by calculating Laser emission and receiving the time difference of the reflected beams, the position that positioning leakage occurs.?
In the present embodiment, the reflected beams include scattered beam and deflecting light beams.
Wherein, spilling point calculation expression is：
Wherein, d is leakage point position；C is vacuum light speed；T is the time difference for emitting laser and receiving the reflected beams；η
It is the refractive index of optical fiber.
The position that leakage occurs can be positioned through the above way further ensures oil product to handle leak position
Transport is safe to use.Meanwhile optical fiber is used in the present embodiment, it can not only make the laying range of 22 cable 2 of detection line become
Greatly, and because not charged, without doing technological processing for explosion protection feature, this is a huge progress for the leak detection of petroleum chemical industry.
Further, the reaction part 212 is oil suction expanded rubber.Oil suction expanded rubber (oil swellable
Rubber abbreviation OSR) it is a kind of novel functional oil absorption material, it is on traditional rubber matrix by being chemically incorporated into parent
Oiliness functional group or made of being blended with lipophilic ingredients, is the combination of rubber matrix and nonpolar lipophilic ingredient, has rubber
The good high resiliency and compression resistant morphotropism of glue, while also having the characteristics that rapid spatial expansion after oil suction.
Further, the ontology further includes being arranged in 212 outside of reaction part and being in the detection line 22
Sheath 214 in relative direction.Specifically, the sheath 214 is engraved structure, for example, it is netted.In addition, sheath 214 is using gold
Category is made, and can play a supporting role to ontology, simultaneously as sheath 214 is engraved structure, so when there is oil leak event
When, sheath 214 will not hinder oil product to penetrate into reaction part 212.
Further, the ontology further includes support element 213, and the reaction part 212 is cylinder, the support element 213
It is arranged on the axis of the reaction part 212.Support element 213 can be used metal material and be made, to play a supporting role to ontology,
When it is cylinder to react part 212, support element 213 is arranged on the axis of reaction part 212, reaction part 212 can be played
The effect of even support.Further, support element 213 can specifically use the strengthening core of diameter (1900 ± 15) um that can also adopt certainly
With the strengthening core of other diameters, do not limit herein.
Further, the ontology further includes being arranged in 212 outside of reaction part and being in the detection line 22
The cross section of sheath 214 in relative direction, the sheath 214 is semicircle.Sheath 214 is wrapped in 212 outside of reaction part, when
Can be to thrust there are one sheaths 214 when reacting 212 oil suction of part expansion, opposite, sheath 214 can be to the reaction part 212 after expansion
Reaction force is generated, which can push away the direction where reacting part 212 to detection line 22, detection line 22 is pushed to limit
Position part 23, contributes to the bending of detection line 22, is detected to oil leak accident convenient for signal transceiver 1.Further, institute
State the half that the distance between detection line 22 and the axis for reacting part 212 are more than reaction 212 radius of part.Further
, a diameter of (250 ± 2) um's of optical fiber, diameter (1900 ± 15) um's of strengthening core, reaction part 212 (when unexpanded)
A diameter of (7 ± 1.5) mm, the distance between detection line 22 and support element 213 be (2500 ± 5) um, it is preferred that detection line 22 with
It is 1.5mm to react the minimum distance between 212 side of part.
Further, the locating part 23 is steel wire, and the steel wire is set around in the shape of a spiral on the ontology.The steel wire
Lead of screw be 1.5cm to 3cm, preferably 2cm.The gauge of wire is (370 ± 5) um.When oil leak occurs,
Oil suction expanded rubber can expand, and the optical fiber of parallel laid also can be to external expansion, under the action of helical form steel wire, optical fiber
It can deform, be in undaform.At this point, the OTDR hosts being connect with optical fiber are to fibre optical transmission laser, laser transmits in a fiber
Shi Fasheng reflects, and the reflected beams are received by OTDR, and OTDR can position leakage by the speed and angle of calculating the reflected beams
Position, to handle leak position, further ensure oil product transport or it is safe to use.
Fig. 5 is the flow chart of Oil Leakage Detecting method provided in an embodiment of the present invention, as shown in figure 5, the embodiment of the present invention is also
A kind of Oil Leakage Detecting method is provided, the method is applied to the leakage detection device in above-described embodiment, the method includes：
Step 101, signal transceiver sends detection signal to detection line, and receives the detection signal in the detection line
Reflection signal when middle transmission.
Step 102, signal transceiver analyzes the reflection signal, to judge it is curved whether the detection line occurs
It is bent.
Step 103, when the detection line bends, oil accident occurs for judgement.
Step 104, when the detection line does not bend, oil accident does not occur for judgement.
Oil Leakage Detecting method in the present embodiment receives reflection signal by signal transceiver from detection line, and to anti-
It penetrates signal to be analyzed to judge whether detection line bends, when detection line bends, illustrates that oil accident occurs, it is no
Then, oil accident does not occur.Oil leak event is detected using the above method, reliability is high, can find oil in time
Product incident of leakage, the transport of effective guarantee oil product and safe to use.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within the protection of the present invention.
Claims (10)
1. a kind of leakage detection device, which is characterized in that including signal transceiver and cable, wherein the cable include ontology,
Detection line and locating part positioned at the outer body；
The ontology includes reaction part, and the detection line is wrapped in the reaction part, is expanded against after the reaction part oil suction
The detection line squeezes the locating part, so that the detection line is bent；
The signal transceiver is connect with the detection line；The signal transceiver is used to send detection letter to the detection line
Number, and the reflection signal when detection signal transmits in the detection line is received, to judge institute according to the reflection signal
State whether detection line bends.
2. the apparatus according to claim 1, which is characterized in that the ontology further includes being arranged on the outside of the reaction part
And it is in the sheath in relative direction with the detection line.
3. the apparatus of claim 2, which is characterized in that the ontology further includes support element, and the reaction part is circle
Cylinder, the support element are arranged on the axis of the reaction part.
4. device according to claim 3, which is characterized in that the cross section of the sheath is semicircle, the detection line
The distance between described axis for reacting part is more than the half of the reaction part radius.
5. the apparatus according to claim 1, which is characterized in that the detection line is optical fiber, and the signal transceiver is light
Time-domain reflectomer.
6. the apparatus according to claim 1, which is characterized in that the reaction part is oil suction expanded rubber.
7. according to the device described in any one of claim 1-6, which is characterized in that the locating part is steel wire, the steel wire
It is set around in the shape of a spiral on the ontology.
8. device according to claim 7, which is characterized in that the lead of screw of the steel wire is 1.5cm to 3cm.
9. the apparatus of claim 2, which is characterized in that the sheath is engraved structure.
10. a kind of Oil Leakage Detecting method, which is characterized in that the method is applied to the leakage described in any one of claim 1-9
Oily detection device, the method includes：
Signal transceiver sends detection signal to detection line, and receives anti-when the detection signal transmits in the detection line
Penetrate signal；
Signal transceiver analyzes the reflection signal, to judge whether the detection line bends；
When the detection line bends, oil accident occurs for judgement；
When the detection line does not bend, oil accident does not occur for judgement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497984.7A CN108760162A (en) | 2018-05-23 | 2018-05-23 | leakage detection device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497984.7A CN108760162A (en) | 2018-05-23 | 2018-05-23 | leakage detection device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799845A (en) * | 2018-07-12 | 2018-11-13 | 北京目黑科技有限公司 | A kind of leakage detection device and its Oil Leakage Detecting cable and detection method |
| CN114063189A (en) * | 2021-11-25 | 2022-02-18 | 中国石油大学(华东) | Oil leak detection optical cable and oil leak detection device |
| WO2022056895A1 (en) * | 2020-09-21 | 2022-03-24 | Abb Schweiz Ag | Apparatus for determining oil leakage and robot using the apparatus |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587945A (en) * | 2004-09-13 | 2005-03-02 | 西安交通大学 | Sensitive optical cable for long distance oil-gas pipeline safety detection |
| CN2856957Y (en) * | 2005-08-17 | 2007-01-10 | 中国石油天然气集团公司 | Distributing fiber glass senser for leakage of medium |
| CN103038619A (en) * | 2010-06-01 | 2013-04-10 | 邓录普石油与海洋有限公司 | Leak detector |
| CN103528763A (en) * | 2013-07-15 | 2014-01-22 | 葛建 | Refuse landfill seepage detection method and detection device |
| CN104565826A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | Pipeline optical fiber safety monitoring early warning method and system |
| CN204422161U (en) * | 2015-03-19 | 2015-06-24 | 成都誉华科技有限公司 | A kind of bending-type fibre-optical sensing device responsive to oil |
| CN204514549U (en) * | 2015-03-19 | 2015-07-29 | 成都誉华科技有限公司 | A kind of oil leak detection system measured based on optical fiber backscattering |
| CN106404310A (en) * | 2016-09-14 | 2017-02-15 | 深圳市祥为测控技术有限公司 | Oil leakage detection cable and oil leakage detection device |
| CN206095540U (en) * | 2016-09-14 | 2017-04-12 | 深圳市祥为测控技术有限公司 | Oil leakage detection cable and oil leakage detection device |
| CN106644276A (en) * | 2017-01-11 | 2017-05-10 | 唐山市神州科贸有限公司 | Monitoring system for detecting tank leakage by utilizing distributed optical fiber |
| CN206439635U (en) * | 2016-10-08 | 2017-08-25 | 上海腾盛智能安全科技股份有限公司 | A kind of Pipeline Leak monitoring system |
-
2018
- 2018-05-23 CN CN201810497984.7A patent/CN108760162A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587945A (en) * | 2004-09-13 | 2005-03-02 | 西安交通大学 | Sensitive optical cable for long distance oil-gas pipeline safety detection |
| CN2856957Y (en) * | 2005-08-17 | 2007-01-10 | 中国石油天然气集团公司 | Distributing fiber glass senser for leakage of medium |
| CN103038619A (en) * | 2010-06-01 | 2013-04-10 | 邓录普石油与海洋有限公司 | Leak detector |
| CN103528763A (en) * | 2013-07-15 | 2014-01-22 | 葛建 | Refuse landfill seepage detection method and detection device |
| CN104565826A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | Pipeline optical fiber safety monitoring early warning method and system |
| CN204422161U (en) * | 2015-03-19 | 2015-06-24 | 成都誉华科技有限公司 | A kind of bending-type fibre-optical sensing device responsive to oil |
| CN204514549U (en) * | 2015-03-19 | 2015-07-29 | 成都誉华科技有限公司 | A kind of oil leak detection system measured based on optical fiber backscattering |
| CN106404310A (en) * | 2016-09-14 | 2017-02-15 | 深圳市祥为测控技术有限公司 | Oil leakage detection cable and oil leakage detection device |
| CN206095540U (en) * | 2016-09-14 | 2017-04-12 | 深圳市祥为测控技术有限公司 | Oil leakage detection cable and oil leakage detection device |
| CN206439635U (en) * | 2016-10-08 | 2017-08-25 | 上海腾盛智能安全科技股份有限公司 | A kind of Pipeline Leak monitoring system |
| CN106644276A (en) * | 2017-01-11 | 2017-05-10 | 唐山市神州科贸有限公司 | Monitoring system for detecting tank leakage by utilizing distributed optical fiber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799845A (en) * | 2018-07-12 | 2018-11-13 | 北京目黑科技有限公司 | A kind of leakage detection device and its Oil Leakage Detecting cable and detection method |
| WO2022056895A1 (en) * | 2020-09-21 | 2022-03-24 | Abb Schweiz Ag | Apparatus for determining oil leakage and robot using the apparatus |
| CN114063189A (en) * | 2021-11-25 | 2022-02-18 | 中国石油大学(华东) | Oil leak detection optical cable and oil leak detection device |
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