CN204879459U - Optic fibre method collection oil pipe line equipment - Google Patents
Optic fibre method collection oil pipe line equipment Download PDFInfo
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- CN204879459U CN204879459U CN201520447921.2U CN201520447921U CN204879459U CN 204879459 U CN204879459 U CN 204879459U CN 201520447921 U CN201520447921 U CN 201520447921U CN 204879459 U CN204879459 U CN 204879459U
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- optical fiber
- leak detecting
- detecting device
- gathering line
- fiber optic
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Abstract
The utility model provides an optic fibre method collection oil pipe line equipment relates to the pipe -line transportation and detects technical field, and the device has characteristics such as measuring range is wide, the monitoring precision is high, hang down the consume, anti -electromagnetic interference is corrosion -resistant. An optic fibre method collection oil pipe line equipment, includes: connect laser pulse light source, the scattered light discrete device that sets up in order and lay the sensitive optical cable in the pipeline below, at least including 2 temperature measurement optical fiber and 1 telecommunication optical fiber among the sensitive optical cable, temperature measurement optical fiber's assemble end and telecommunication optical fiber link to each other and set up, monitoring devices still includes photoelectric detector, amplifier circuit and AD collection and the signal processing unit who connects gradually the setting with the scattered light discrete device.
Description
Technical field
The utility model relates to Cemented filling detection technique field, particularly relates to a kind of Fiber Optic Sensor gathering line leak detecting device.
Background technique
In view of the unique advantage had at bulk materials such as transport liquid, gas etc., conveyance conduit occupies very consequence in the activity in production of oilfield enterprise.But the growth in the increasing of pipeline, pipe age, the factor impact such as constructional deficiency, environmental corrosion and artificial destruction in addition, pipeline leakage accident occurs often, and this causes huge threat to the life of people, property safety and living environment etc.
For ensureing normal use, the prevention pipeline leakage of conveyance conduit, usually need to monitor in real time conveyance conduit.Existing monitoring technique mainly judges whether to leak, as mass balance approach, pressure wave analytic method, Realtime Streaming Transport, statistics leak detecting etc. by testing pipes discharge pressure, flow, the isoparametric change of temperature or detection leakage noise.But inventor finds, be subject to the restriction of the factors such as the sensitivity of fluid characteristics, delivery technology and test instrument and testing precision, above-mentioned monitoring method often can only any temperature of measuring channel; And when needs are when one comparatively large regions carries out temperature collection, then need a large amount of sensing equipments, great difficulty can be brought to work such as wiring, installation, maintenances.
Model utility content
A kind of Fiber Optic Sensor gathering line leak detecting device that the utility model provides, the feature such as this device has that measuring range is wide, the high and low consume of monitoring accuracy, electromagnetism interference are corrosion-resistant.
For solving the problems of the technologies described above, the utility model have employed following technological scheme:
A kind of Fiber Optic Sensor gathering line leak detecting device, comprising:
The sensing optic cable connecting the laser pulse light source of setting, scattered light discrete device in turn and be laid in below pipeline;
At least comprise 2 temperature-measuring optical fibers and 1 telecommunication optical fiber in described sensing optic cable, the pool side of temperature-measuring optical fiber is connected with telecommunication optical fiber and arranges;
Described monitoring device also comprises the photodetector, amplification circuit and the A/D that are connected setting with scattered light discrete device successively and gathers and signal processing unit.
Further, the thermostatic equipment for providing standard metering temperature is also provided with between described bidirectional coupler and described sensing optic cable in succession.
Concrete, include bidirectional coupler and Wavelength Devision Multiplexer in described scattered light discrete device.
Further, described monitoring device also includes and gathers with described A/D the alarm unit be connected with signal processing unit.
Comparatively preferred, described photodetector comprises for the first photodetector of demodulation Stokes back-scattering light and the second photodetector for demodulation anti-Stokes back-scattering light.
Preferably, described laser pulse light source comprises semiconductor laser, drive circuit and optical isolators.
A kind of Fiber Optic Sensor gathering line leak detecting device that the utility model provides, wherein, includes laser pulse light source, scattered light discrete device, sensing optic cable, photodetector, amplification circuit, A/D collection and signal processing unit etc. in this monitoring device.Adopt the monitoring device of said structure unit by interference light information in Real-Time Monitoring sensing optic cable, measuring and calculating obtains the change of temperature field situation that sensing optic cable distributes along the line, finally realizes the Real-Time Monitoring effect to pipeline leakage.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of Fiber Optic Sensor gathering line of the utility model leak detecting device;
Fig. 2 is the light-dividing principle schematic diagram of its Wavelength Devision Multiplexer of a kind of Fiber Optic Sensor gathering line of the utility model leak detecting device.
Embodiment
A kind of Fiber Optic Sensor gathering line leak detecting device that the utility model provides, the feature such as this device has that measuring range is wide, the high and low consume of monitoring accuracy, electromagnetism interference are corrosion-resistant.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
A kind of Fiber Optic Sensor gathering line leak detecting device, as shown in Figure 1, includes the laser pulse light source 1, scattered light discrete device 2 and the sensing optic cable 3 that connect setting in turn in this detection device.Wherein concrete, be provided with again the parts such as semiconductor laser 101, drive circuit 102 and optical isolators 103 further in laser pulse light source 1; Bidirectional coupler 201 and Wavelength Devision Multiplexer 202 is included in scattered light discrete device 2; And sensing optic cable 3 distribution is arranged at below pipeline to be monitored, wherein at least include 2 temperature-measuring optical fibers and 1 telecommunication optical fiber (temperature-measuring optical fiber and telecommunication optical fiber are not shown in FIG).The continuous light wave that laser pulse light source 1 sends is by after bidirectional coupler 201 and Wavelength Devision Multiplexer 202, and being split into light strength ratio is that the two beam interferometer light of 1:1 are propagated respectively in 2 temperature-measuring optical fibers.Then, again because temperature-measuring optical fiber pool side is connected with telecommunication optical fiber, after two beam interferometer light are transmitted to the end of sensing optic cable 3, then by telecommunication optical fiber, the interference light after collecting is fed back.
In addition, as shown in Figure 1, detection device also includes photodetector 4, amplification circuit 5 and A/D collection and signal processing unit 6.Wherein, photodetector 4 is connected with heat radiation light separator part 2, preferably can be connected with Wavelength Devision Multiplexer 202; The first photodetector 401 and the second photodetector 402 is included in photodetector 4.Wherein, first photodetector 401 feeds back the Stokes back-scattering light in interference light for demodulation, second photodetector 402 feeds back the anti-Stokes back-scattering light in interference light for demodulation, and above-mentioned path channels can with reference to the Wavelength Devision Multiplexer light-dividing principle schematic diagram shown in figure 2.
It should be noted that, when pipeline occurs to leak, the sensing optic cable 3 of Near Pipelines at this leakage point place, phase of light wave modulation phenomenon can occur by leakage contribution.The process such as A/D gathers and signal processing unit 6 gathers by amplifying, cumulative mean, denoising, resolve the Stokes back-scattering light and anti-Stokes back-scattering light that obtain, the program of recycling setting finally can determine the leakage situation of leakage point.
At this, as one of the present utility model comparatively preferred embodiment, can gather to be connected further with signal processing unit 6 place at A/D and alarm unit 7 is set, when monitoring pipeline leakage, by this alarm unit 7 above-mentioned leak point information reporting to Surveillance center being carried out reporting to the police and notifying that staff disposes this leakage accident in time.
Finally, need to add is that, comparatively determining in the process of the leak case in tested region by anti-Stokes scattering light and Stokes ratio light strength ratio, for improving the precision of temperature monitoring, can a thermostatic equipment 8 being set between scattered light discrete device 2 and sensing optic cable 3.Thermostatic equipment 8 can be used for providing for sensing optic cable 3 and keeping a standard metering temperature (this standard metering temperature can set according to measuring and calculating actual conditions).
A kind of Fiber Optic Sensor gathering line leak detecting device that the utility model provides, wherein, includes laser pulse light source, scattered light discrete device, sensing optic cable, photodetector, amplification circuit, A/D collection and signal processing unit etc. in this monitoring device.Adopt the monitoring device of said structure unit by interference light information in Real-Time Monitoring sensing optic cable, measuring and calculating obtains the change of temperature field situation that sensing optic cable distributes along the line, finally realizes the Real-Time Monitoring effect to pipeline leakage.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (6)
1. a Fiber Optic Sensor gathering line leak detecting device, is characterized in that, comprising:
The sensing optic cable connecting the laser pulse light source of setting, scattered light discrete device in turn and be laid in below pipeline;
At least comprise 2 temperature-measuring optical fibers and 1 telecommunication optical fiber in described sensing optic cable, the pool side of temperature-measuring optical fiber is connected with telecommunication optical fiber and arranges;
Described monitoring device also comprises the photodetector, amplification circuit and the A/D that are connected setting with scattered light discrete device successively and gathers and signal processing unit.
2. Fiber Optic Sensor gathering line leak detecting device according to claim 1, is characterized in that, is also provided with the thermostatic equipment for providing standard metering temperature between described scattered light discrete device and described sensing optic cable in succession.
3. Fiber Optic Sensor gathering line leak detecting device according to claim 2, is characterized in that, includes bidirectional coupler and Wavelength Devision Multiplexer in described scattered light discrete device.
4. Fiber Optic Sensor gathering line leak detecting device according to claim 1, is characterized in that, described monitoring device also includes and gathers with described A/D the alarm unit be connected with signal processing unit.
5. Fiber Optic Sensor gathering line leak detecting device according to claim 1, it is characterized in that, described photodetector comprises for the first photodetector of demodulation Stokes back-scattering light and the second photodetector for demodulation anti-Stokes back-scattering light.
6. Fiber Optic Sensor gathering line leak detecting device according to claim 1, is characterized in that, described laser pulse light source comprises semiconductor laser, drive circuit and optical isolators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520447921.2U CN204879459U (en) | 2015-06-26 | 2015-06-26 | Optic fibre method collection oil pipe line equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520447921.2U CN204879459U (en) | 2015-06-26 | 2015-06-26 | Optic fibre method collection oil pipe line equipment |
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| CN204879459U true CN204879459U (en) | 2015-12-16 |
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| CN201520447921.2U Active CN204879459U (en) | 2015-06-26 | 2015-06-26 | Optic fibre method collection oil pipe line equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135215A (en) * | 2015-06-26 | 2015-12-09 | 中国石油化工股份有限公司胜利油田分公司 | Leakage detection device for oil collecting pipeline with optical fiber method |
| CN111120877A (en) * | 2019-12-12 | 2020-05-08 | 同济大学 | Drainage pipe network leakage monitoring equipment based on distributed optical fiber temperature measurement |
-
2015
- 2015-06-26 CN CN201520447921.2U patent/CN204879459U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135215A (en) * | 2015-06-26 | 2015-12-09 | 中国石油化工股份有限公司胜利油田分公司 | Leakage detection device for oil collecting pipeline with optical fiber method |
| CN111120877A (en) * | 2019-12-12 | 2020-05-08 | 同济大学 | Drainage pipe network leakage monitoring equipment based on distributed optical fiber temperature measurement |
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