CN204116627U - Tracking and positioning system of pipe cleaner - Google Patents
Tracking and positioning system of pipe cleaner Download PDFInfo
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- CN204116627U CN204116627U CN201420525513.XU CN201420525513U CN204116627U CN 204116627 U CN204116627 U CN 204116627U CN 201420525513 U CN201420525513 U CN 201420525513U CN 204116627 U CN204116627 U CN 204116627U
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- 230000003287 optical effect Effects 0.000 claims abstract description 49
- 239000013307 optical fiber Substances 0.000 claims abstract description 26
- 241000283973 Oryctolagus cuniculus Species 0.000 claims description 50
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000000835 fiber Substances 0.000 description 4
- 230000018199 S phase Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- -1 length Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- 241000931705 Cicada Species 0.000 description 1
- 206010038743 Restlessness Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a tracking positioning system of dredging pipe ware, include: the detection device is used for generating pulse light signals and transmitting the pulse light signals to optical fibers in the optical cable laid in the same channel of the pipeline; after the pulse optical signals are transmitted to the optical fibers, detecting and obtaining Rayleigh scattering signals of the optical cables laid in the same ditch of the pipeline; and the data processing device is connected with the detection device and used for receiving the Rayleigh scattering signal sent by the detection device and determining the position of the pig based on the Rayleigh scattering signal.
Description
Technical field
The utility model relates to track and localization technical field, particularly relates to a kind of tracing-positioning system of rabbit.
Background technology
The safe operation of oil and gas pipes is related to the energy security of country, and the requisite part of pigging pipeline operations of pipeline.For crude oil pipeline, the fundamental purpose of pigging removes the solidifying oil, wax deposition, fouling etc. of pipe interior; For natural gas line, the fundamental purpose of pigging removes pipe internal water accumulation, lightweight oil, methane hydrate etc., and the removing of these foreign material is conducive to reducing transporting resistance, reduces wall erosion, thus ensures the safe operation of pipeline.
Need to carry out track and localization to rabbit to prevent, during pigging operation, blocking phenomenon occurs.At present, mainly contain two kinds of modes to the tracking of rabbit, one is pipeline was installed ball indicator to realize, and this mode needs perforate on pipeline to install ball indicator, and construction is difficulty comparatively.Another kind is by installing transmitter in rabbit, the outside emitting electromagnetic wave of transmitter, receiver within the specific limits can receiver/transmitter launch electromagnetic wave thus realize pig tracing function, this mode positioning precision is high, but is easily subject to the interference of ambient electromagnetic field.Above-mentioned two kinds of modes all simply can only judge that whether rabbit is by ad-hoc location, and the positional information of detection rabbit that can not be real-time; And, need people at pipeline hand receiver along the line to accept the electromagnetic signal of transmitter, pigging operation each time all needs to expend great human and material resources and financial resources, and once meet inclement weather, not only affect the precision of equipment, even may occur industrial accident.
Utility model content
The utility model embodiment provides a kind of tracing-positioning system of rabbit, to solve the technical matters that can not detect the positional information of rabbit in prior art in real time.
The utility model provides a kind of tracing-positioning system of rabbit, comprising:
Pick-up unit, for generation of pulsed optical signals, and transfers to the optical fiber in pipeline laying in one ditch optical cable by described pulsed optical signals; And
After pulsed optical signals described in described Optical Fiber Transmission, detect the Rayleigh scattering signal obtaining described pipeline laying in one ditch optical cable;
Data processing equipment, is connected to described pick-up unit, for receiving the described Rayleigh scattering signal that described pick-up unit is sent to, and determines the position of described rabbit based on described Rayleigh scattering signal.
Optionally, described pick-up unit, specifically comprises:
Laser instrument, for providing continuous light wave for described system;
Modulator, is connected to described laser instrument;
Pulse signal source, is connected to described modulator, for providing modulation signal to described modulator, by described modulation signal, described continuous light wave is modulated to described pulsed optical signals to make described modulator; And produce pulse signal;
Circulator, is connected to described modulator, for described pulsed optical signals is transferred to described optical fiber; And the scattered light signal obtained in described optical fiber;
Detector, is connected to described circulator and described pulse signal source, for described scattered light signal is converted to analog electrical signal;
Capture card, be connected to described detector and described pulse signal source, for when receiving the described pulse signal that described pulse signal source sends, gather and obtaining described analog electrical signal, and transferring described analog electrical signal to digital signal, described digital signal is described scattered signal.
Optionally, described pick-up unit, also comprises:
First amplifier, is arranged between described modulator and described circulator, for carrying out amplifieroperation to described pulsed optical signals.
Optionally, described pick-up unit, also comprises:
Second amplifier, is arranged between described circulator and described detector, for carrying out amplifieroperation to described scattered light signal.
Optionally, described pick-up unit, also comprises:
Wave filter, is arranged between described second amplifier and described detector, carries out amplifying the noise produced in the described scattered light signal that processed for filtering.
Optionally, described system also comprises:
Display, is connected to described data processing equipment, for pointing out the position of described rabbit.
The utility model beneficial effect is as follows:
Due in the utility model embodiment, provide a kind of tracing-positioning system of rabbit, comprising: pick-up unit and data processing equipment, wherein, pick-up unit, for generation of pulsed optical signals, and transfers to the optical fiber in pipeline laying in one ditch optical cable by described pulsed optical signals, and after pulsed optical signals described in described Optical Fiber Transmission, detect the Rayleigh scattering signal obtaining described pipeline laying in one ditch optical cable, data processing equipment, be connected to described pick-up unit, for receiving the described Rayleigh scattering signal that described pick-up unit is sent to, and the position of described rabbit is determined based on described Rayleigh scattering signal, due to rabbit pass through in optical fiber time, huge vibration can be produced, this effect of vibration in laying in one ditch optical cable with on ditch optical cable, the refractive index of optical fiber, length, core diameters etc. have subtle change, this place's phase place is caused to change, the change of phase place finally causes the change of Rayleigh scattering light intensity, and then after scattered signal being detected, the position of rabbit just can be determined by the difference of scattered signal, thus reach the technique effect that can detect the position of rabbit in real time, and determine that the mode of rabbit position is more accurate, effectively improve signal to noise ratio (S/N ratio).
Accompanying drawing explanation
Fig. 1 is the structural drawing of the tracing-positioning system of rabbit in the utility model embodiment;
Fig. 2 is the structural drawing of the pick-up unit in the tracing-positioning system of the utility model embodiment rabbit;
Fig. 3 is the further refinement figure of the pick-up unit in the tracing-positioning system of the utility model embodiment rabbit;
Fig. 4 is the structural drawing of the tracing-positioning system of the rabbit comprising display device in the utility model embodiment;
Fig. 5 is that in the utility model embodiment, display device and data processing equipment are the schematic diagram of an electronic equipment;
Fig. 6 (a)-Fig. 6 (c) is the schematic diagram of the tracing-positioning system of rabbit in the utility model embodiment.
Embodiment
The utility model embodiment provides a kind of tracing-positioning system of rabbit, to solve the technical matters that can not detect the positional information of rabbit in prior art in real time.Technical scheme in the embodiment of the present application is solve above-mentioned technical matters, and general thought is as follows:
Provide a kind of tracing-positioning system of rabbit, comprising: pick-up unit and data processing equipment, wherein, pick-up unit, for generation of pulsed optical signals, and transfers to the optical fiber in pipeline laying in one ditch optical cable by pulsed optical signals, and after Optical Fiber Transmission pulsed optical signals, detect the Rayleigh scattering signal obtaining pipeline laying in one ditch optical cable, data processing equipment, be connected to pick-up unit, for the Rayleigh scattering signal that receiving detection device is sent to, and based on the position of Rayleigh scattering signal determination rabbit, due to rabbit pass through in optical fiber time, huge vibration can be produced, this effect of vibration in laying in one ditch optical cable with on ditch optical cable, the refractive index of optical fiber, length, core diameters etc. have subtle change, this place's phase place is caused to change, the change of phase place finally causes the change of Rayleigh scattering light intensity, and then after scattered signal being detected, the position of rabbit just can be determined by the difference of scattered signal, thus reach the technique effect that can detect the position of rabbit in real time, and determine that the mode of rabbit position is more accurate, effectively improve signal to noise ratio (S/N ratio).
In order to better understand technique scheme, below by accompanying drawing and specific embodiment, technical solutions of the utility model are described in detail, the specific features being to be understood that in the utility model embodiment and embodiment is the detailed description to technical solutions of the utility model, instead of the restriction to technical solutions of the utility model, when not conflicting, the technical characteristic in the utility model embodiment and embodiment can combine mutually.
The utility model embodiment provides a kind of tracing-positioning system of rabbit, please refer to Fig. 1, specifically comprises:
Pick-up unit 10, for generation of pulsed optical signals, and transfers to the optical fiber in pipeline laying in one ditch optical cable by pulsed optical signals; And
After Optical Fiber Transmission pulsed optical signals, detect the Rayleigh scattering signal obtaining pipeline laying in one ditch optical cable;
Data processing equipment 11, is connected to pick-up unit 10, for the Rayleigh scattering signal that receiving detection device is sent to, and based on the position of Rayleigh scattering signal determination rabbit.
Pipeline laying in one ditch optical cable usually with pipeline parallel laying, usually about 50cm above pipeline, certainly, pipeline laying in one ditch optical cable, by the decision of pipeline Distance geometry execution conditions, also can be other position, not be restricted this utility model embodiment.
In specific implementation process, can be connected by bnc interface between pick-up unit 10 and data processing equipment 11, and then scattered signal can pass through BNC (Bayonet Nut Connector: snap-fit connector) interface and transfers to data processing equipment 11 by pick-up unit 10, can certainly be other interface, the utility model embodiment be restricted.
As further preferred embodiment, please refer to Fig. 2, pick-up unit 10 specifically comprises:
Laser instrument 20, for providing continuous light wave for system, such as, can adopt the laser instrument of narrow linewidth light source;
Modulator 21, is connected to laser instrument 20, and the continuous light wave that modulator 21 mainly produces laser instrument 20 plays the effect of modulation;
Pulse signal source 22, is connected to modulator 21, for providing modulation signal to modulator, by modulation signal, continuous light wave is modulated to pulsed optical signals to make modulator 21; And produce pulse signal;
Circulator 23, is connected to modulator 21, for pulsed optical signals is transferred to optical fiber; And the scattered light signal in acquisition optical fiber;
Detector 24, is connected to circulator 23 and pulse signal source 22, for scattered light signal is converted to analog electrical signal;
Capture card 25, is connected to pulse signal source 22 and detector 24, for send in return pulse signal source pulse signal time, gather and obtain analog electrical signal, and transfer analog electrical signal to digital signal, digital signal is scattered signal.
As further preferred embodiment, please refer to Fig. 3, pick-up unit 10, also comprises:
First amplifier 30, is arranged between modulator 21 and circulator 23, carries out amplifieroperation for paired pulses light signal.Owing to being amplified by the first amplifier 30 paired pulses light signal, so the Rayleigh scattering light intensity of rabbit position can be caused to produce larger change, and then reach the technique effect determining rabbit position more accurately.
As further preferred embodiment, please continue to refer to Fig. 3 pick-up unit, also comprise:
Second amplifier 31, be arranged between circulator 21 and detector 24, for carrying out amplifieroperation to scattered light signal, owing to having carried out amplifying process to scattered light signal, so the intensity of the scattered signal detected is higher, and then the position of rabbit can be determined more accurately.
As further preferred embodiment, please continue to refer to Fig. 3, pick-up unit 10, also comprises:
Wave filter 32, be arranged between the second amplifier 31 and detector 24, carry out for filtering amplifying the noise produced in the scattered light signal that process, due to the noise in the scattered light signal by wave filter 32 filtering, so reach the technique effect that reduction disturbs.
In this case, 1 end of circulator 23 connects the first amplifier 31,2 end and connects the second amplifier 32,3 end connecting fiber.
As further preferred embodiment, please refer to Fig. 4, system also comprises:
Display 12, is connected to data processing equipment 11, for pointing out the position of rabbit.
In specific implementation process, display 12 as an independent main body, can only play display effect; Display 12 also can be grouped together with data processing equipment 11, forms an electronic equipment, such as: as shown in Figure 5.In addition, display 12 can be shown the position of rabbit, also can be shown the position of rabbit by pictorial manner by mode word, is not restricted this utility model embodiment.
Below, the following principle of the tracing-positioning system of rabbit will be introduced.
As shown in Fig. 6 (a), be three that detect continuous backward Rayleigh scattering signal curves, wherein, transverse axis represents fiber lengths, and the longitudinal axis represents detection time, wherein l
0the dotted line at place represents l
0be in not plot of light intensity in the same time, and then obtain l
0be in not light intensity value in the same time and just can obtain Fig. 6 (b).
The schematic diagram of the not Rayleigh signal in the same time that Fig. 6 (b) represents that same position place collects, for 3 (b) be shown in different time-ofday signals V1 (t) that same position place collects, V2 (t) is divided by, the impact of ground unrest can be effectively reduced like this, improve the signal to noise ratio (S/N ratio) of vibration signal:
In formula, L is sensor fibre length.
By being divided by, curve shown in Fig. 6 (c) just can be obtained, the some t that in this figure, relative light intensity is the highest above
0be the point that Rayleigh signal intensity is maximum, and then the positional information of rabbit can be drawn based on this:
In formula, c is the light velocity in vacuum, and n is fiber core refractive index.
One or more embodiment of the present utility model, at least has following beneficial effect:
Due in the utility model embodiment, provide a kind of tracing-positioning system of rabbit, comprising: pick-up unit and data processing equipment, wherein, pick-up unit, for generation of pulsed optical signals, and transfers to the optical fiber in pipeline laying in one ditch optical cable by pulsed optical signals, and after Optical Fiber Transmission pulsed optical signals, detect the Rayleigh scattering signal obtaining pipeline laying in one ditch optical cable, data processing equipment, be connected to pick-up unit, for the Rayleigh scattering signal that receiving detection device is sent to, and based on the position of Rayleigh scattering signal determination rabbit, due to rabbit pass through in optical fiber time, huge vibration can be produced, this effect of vibration in laying in one ditch optical cable with on ditch optical cable, the refractive index of optical fiber, length, core diameters etc. have subtle change, this place's phase place is caused to change, the change of phase place finally causes the change of Rayleigh scattering light intensity, and then after scattered signal being detected, the position of rabbit just can be determined by the difference of scattered signal, thus reach the technique effect that can detect the position of rabbit in real time, and determine that the mode of rabbit position is more accurate, effectively improve signal to noise ratio (S/N ratio).
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model embodiment and not depart from the spirit and scope of the utility model embodiment.Like this, if these amendments of the utility model embodiment and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (6)
1. a tracing-positioning system for rabbit, is characterized in that, comprising:
Pick-up unit, for generation of pulsed optical signals, and transfers to the optical fiber in pipeline laying in one ditch optical cable by described pulsed optical signals; And
After pulsed optical signals described in described Optical Fiber Transmission, detect the Rayleigh scattering signal obtaining described pipeline laying in one ditch optical cable;
Data processing equipment, is connected to described pick-up unit, for receiving the described Rayleigh scattering signal that described pick-up unit is sent to, and determines the position of described rabbit based on described Rayleigh scattering signal.
2. the system as claimed in claim 1, is characterized in that, described pick-up unit, specifically comprises:
Laser instrument, for providing continuous light wave for described system;
Modulator, is connected to described laser instrument;
Pulse signal source, is connected to described modulator, for providing modulation signal to described modulator, by described modulation signal, described continuous light wave is modulated to described pulsed optical signals to make described modulator; And produce pulse signal;
Circulator, is connected to described modulator, for described pulsed optical signals is transferred to described optical fiber; And the scattered light signal obtained in described optical fiber;
Detector, is connected to described circulator and described pulse signal source, for described scattered light signal is converted to analog electrical signal;
Capture card, be connected to described detector and described pulse signal source, for when receiving the described pulse signal that described pulse signal source sends, gather and obtaining described analog electrical signal, and transferring described analog electrical signal to digital signal, described digital signal is described scattered signal.
3. system as claimed in claim 2, it is characterized in that, described pick-up unit, also comprises:
First amplifier, is arranged between described modulator and described circulator, for carrying out amplifieroperation to described pulsed optical signals.
4. system as claimed in claim 2, it is characterized in that, described pick-up unit, also comprises:
Second amplifier, is arranged between described circulator and described detector, for carrying out amplifieroperation to described scattered light signal.
5. system as claimed in claim 4, it is characterized in that, described pick-up unit, also comprises:
Wave filter, is arranged between described second amplifier and described detector, carries out amplifying the noise produced in the described scattered light signal that processed for filtering.
6. the system as described in as arbitrary in claim 1-5, it is characterized in that, described system also comprises:
Display, is connected to described data processing equipment, for pointing out the position of described rabbit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525513.XU CN204116627U (en) | 2014-09-12 | 2014-09-12 | Tracking and positioning system of pipe cleaner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525513.XU CN204116627U (en) | 2014-09-12 | 2014-09-12 | Tracking and positioning system of pipe cleaner |
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| Publication Number | Publication Date |
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| CN204116627U true CN204116627U (en) | 2015-01-21 |
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|---|---|---|---|
| CN201420525513.XU Active CN204116627U (en) | 2014-09-12 | 2014-09-12 | Tracking and positioning system of pipe cleaner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923536A (en) * | 2015-05-22 | 2015-09-23 | 沈阳永业实业有限公司 | Communication positioning device and method applied to pipe cleaner inside benthal oil pipeline |
| CN109306864A (en) * | 2018-11-27 | 2019-02-05 | 美钻深海能源科技研发（上海）有限公司 | Subsea pig operation real-time monitoring device based on fiber laser arrays |
| CN110375840A (en) * | 2019-06-25 | 2019-10-25 | 武汉理工光科股份有限公司 | Pig tracing localization method based on distributing optical fiber sensing |
| CN110703349A (en) * | 2019-10-12 | 2020-01-17 | 海隆石油工业集团有限公司 | Pipe cleaner blocking positioning device and method based on optical fiber sensing |
| CN111810768A (en) * | 2020-06-29 | 2020-10-23 | 武汉理工光科股份有限公司 | Method and device for monitoring running state of pipe cleaner based on distributed optical fiber sensing |
| CN113275341A (en) * | 2021-05-19 | 2021-08-20 | 精仪监测科技(苏州)有限公司 | Pipe cleaner tracking and positioning method based on distributed optical fiber vibration sensing |
-
2014
- 2014-09-12 CN CN201420525513.XU patent/CN204116627U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923536A (en) * | 2015-05-22 | 2015-09-23 | 沈阳永业实业有限公司 | Communication positioning device and method applied to pipe cleaner inside benthal oil pipeline |
| CN109306864A (en) * | 2018-11-27 | 2019-02-05 | 美钻深海能源科技研发（上海）有限公司 | Subsea pig operation real-time monitoring device based on fiber laser arrays |
| CN110375840A (en) * | 2019-06-25 | 2019-10-25 | 武汉理工光科股份有限公司 | Pig tracing localization method based on distributing optical fiber sensing |
| CN110703349A (en) * | 2019-10-12 | 2020-01-17 | 海隆石油工业集团有限公司 | Pipe cleaner blocking positioning device and method based on optical fiber sensing |
| CN110703349B (en) * | 2019-10-12 | 2021-10-08 | 海隆石油工业集团有限公司 | Pipe cleaner blocking positioning device and method based on optical fiber sensing |
| CN111810768A (en) * | 2020-06-29 | 2020-10-23 | 武汉理工光科股份有限公司 | Method and device for monitoring running state of pipe cleaner based on distributed optical fiber sensing |
| CN113275341A (en) * | 2021-05-19 | 2021-08-20 | 精仪监测科技(苏州)有限公司 | Pipe cleaner tracking and positioning method based on distributed optical fiber vibration sensing |
| CN113275341B (en) * | 2021-05-19 | 2022-04-08 | 精仪监测科技(苏州)有限公司 | Pipe cleaner tracking and positioning method based on distributed optical fiber vibration sensing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211216 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: PetroChina Company Limited |
|
| TR01 | Transfer of patent right |