CN110595519A - Pre-buried metallization optical fiber sensor's anticorrosive gas pipeline - Google Patents
Pre-buried metallization optical fiber sensor's anticorrosive gas pipeline Download PDFInfo
- Publication number
- CN110595519A CN110595519A CN201910952690.3A CN201910952690A CN110595519A CN 110595519 A CN110595519 A CN 110595519A CN 201910952690 A CN201910952690 A CN 201910952690A CN 110595519 A CN110595519 A CN 110595519A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- gas pipeline
- metalized
- fiber sensor
- metallized
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 116
- 238000001465 metallisation Methods 0.000 title description 4
- 238000005260 corrosion Methods 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 6
- 239000004698 Polyethylene Substances 0.000 claims abstract description 5
- 229920000573 polyethylene Polymers 0.000 claims abstract description 5
- 239000004593 Epoxy Substances 0.000 claims abstract description 4
- 239000012790 adhesive layer Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 4
- 238000009713 electroplating Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 59
- 230000000694 effects Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 4
- 238000001069 Raman spectroscopy Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
- G01D5/35354—Sensor working in reflection
- G01D5/35358—Sensor working in reflection using backscattering to detect the measured quantity
- G01D5/35364—Sensor working in reflection using backscattering to detect the measured quantity using inelastic backscattering to detect the measured quantity, e.g. using Brillouin or Raman backscattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/324—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Raman scattering
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses an anti-corrosion gas pipeline with a pre-buried metalized optical fiber sensor, which comprises a gas pipeline, wherein the outer surface of the gas pipeline is wound with the metalized optical fiber sensor, the metalized optical fiber sensor is spirally and tightly wound on the gas pipeline, the outer surface of the gas pipeline is provided with an anti-corrosion coating, the metalized optical fiber sensor is positioned between the anti-corrosion coating and the gas pipeline, the anti-corrosion coating comprises a bottom layer, a middle layer and a surface layer, the bottom layer is an epoxy powder layer, the middle layer is an adhesive layer, the surface layer is a polyethylene layer, the metalized sensor comprises a metalized area, a tail fiber and an optical fiber connector, the tail fiber is led out from the metalized area, and the end part of the. The invention adopts the metallized optical fiber sensor to be embedded in the anticorrosive coating of the gas pipeline, thus forming the anticorrosive gas pipeline with the embedded metallized optical fiber sensor; the single optical fiber is wound on the gas pipeline to completely cover the pipeline, and meanwhile, the temperature, the vibration and the strain are monitored, so that a better use prospect is brought.
Description
Technical Field
The invention relates to the field of gas pipelines, in particular to an anticorrosion gas pipeline with a pre-embedded metalized optical fiber sensor, and further comprises a monitoring system of the anticorrosion gas pipeline with the pre-embedded metalized optical fiber sensor.
Background
The natural gas pipeline is an important component of urban construction, and nowadays, the surface of the pipeline adopts a reinforced 3PE anticorrosion technology, and the expected safe service life can reach 50 years. Nevertheless, the gas company still needs to pay attention to the operation and maintenance safety of the high-pressure gas pipeline. With the rapid development of urban buried natural gas pipelines, pipeline leakage caused by various reasons frequently occurs. The leakage accidents of the buried natural gas pipeline in China occur occasionally, once the natural gas pipeline is leaked and other dangerous conditions occur, the leakage of volatile organic matters can be caused to cause catastrophic environmental pollution, and huge losses can be caused to various industries and daily life in the whole market.
In the prior art, the gas pipeline is subjected to leak detection and monitoring in an optical fiber monitoring mode, and the specific modes include the following three modes:
the first method comprises the following steps: and laying an optical fiber on the pipeline in the same ditch, namely embedding an optical fiber on the edge of the pipeline to monitor the state of the pipeline. Although the optical fiber is simple and convenient to arrange, the optical fiber is not attached to the pipeline, the information of the pipeline can not be completely reflected, the detection result is easy to be interfered by the environment, and the detection result is inaccurate.
And the second method comprises the following steps: the optical fiber is laid above the pipeline, although the optical fiber is attached to the pipeline in this way, the surface of the optical fiber is sleeved with the armored pipe for protecting the optical fiber, and only laid at the upper end of the pipeline, the whole pipeline cannot be covered, and meanwhile, when the optical fiber is laid on the surfaces of various coated steel pipes subjected to anticorrosion treatment, the anticorrosion materials are polyethylene, polypropylene, various resins and other materials, and are inert conductors of temperature, moisture and electrical insulators. Therefore, the information such as stress strain, vibration, temperature change and the like caused by external influence or internal corrosion leakage of the pipeline cannot be timely and accurately transmitted to the optical fiber, the pipeline information cannot be accurately expressed, and the monitoring result is inaccurate.
And the third is that: the optical fiber is embedded into the pipeline in a way that the optical fiber needs to be embedded in the pipeline in the manufacturing process, however, the pipeline is usually metal, the manufacturing process needs higher temperature, the temperature which the optical fiber can bear is usually not higher than 150 ℃, the embedding process is difficult, the optical fiber is easy to damage and break, and once the optical fiber is damaged, the optical fiber cannot be maintained. Or the groove is opened on the pipeline, and the optical fiber is filled after being buried. The method has complex process and damages the pipeline, which affects the strength of the pipeline.
In summary, the conventional methods for leak detection or corrosion detection generally have the disadvantages of untimely prediction, poor positioning accuracy, high cost, high false alarm rate and the like. Most of pipeline distributed optical fiber sensors can overcome many defects of the traditional method, but the distributed optical fiber sensors cannot be completely attached to the pipeline, accurately reflect pipeline information, are easy to interfere by the environment in detection results, are inaccurate in detection results, and are easy to age and break in traditional optical fibers and complex to maintain. Therefore, an anti-corrosion gas pipeline with a pre-embedded metalized optical fiber sensor is provided.
Disclosure of Invention
The invention mainly aims to provide an anti-corrosion gas pipeline with a pre-embedded metalized optical fiber sensor, which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a pre-buried metallized optical fiber sensor's anticorrosive gas pipeline, includes the gas pipeline, the surface winding of gas pipeline has metallized optical fiber sensor, just the winding is hugged closely to metallized optical fiber sensor heliciform on the gas pipeline, the surface of gas pipeline is provided with anticorrosive coating, metallized optical fiber sensor is located between anticorrosive coating and the gas pipeline.
Preferably, the anticorrosive coating includes bottom, intermediate level and surface course, the bottom is epoxy powder layer, the intermediate level is the adhesive layer, the surface course is the polyethylene layer.
Preferably, the metallized sensor comprises a metallized area, a tail fiber and an optical fiber connector, wherein the metallized area of the tail fiber is led out, and the end part of the tail fiber is connected with the optical fiber connector.
Preferably, the metalized area comprises two groups of metalized sublayers, the first metalized sublayer is deposited on the surface of the optical fiber through a chemical method, and the second metalized sublayer is plated on the surface of the first metalized sublayer through an electroplating method.
Preferably, the diameter of the metallised zones is from 0.4 to 1.2 mm.
The utility model provides a monitoring system of pre-buried metallization optical fiber sensor anticorrosive gas pipeline, contains as above-mentioned a pre-buried metallization optical fiber sensor's anticorrosive gas pipeline.
Preferably, the optical switch, the BOTDA Brillouin optical time domain analyzer, the DAS distributed sound analyzer and the DTS distributed optical fiber thermometer are further included.
Preferably, the output end of the metallized optical fiber sensor is respectively connected with the BOTDA brillouin optical time domain analyzer, the DAS distributed sound analyzer, and the DTS distributed optical fiber thermometer through an optical switch.
Compared with the prior art, the anti-corrosion gas pipeline with the embedded metalized optical fiber sensor and the monitoring system for the anti-corrosion gas pipeline with the embedded metalized optical fiber sensor have the following beneficial effects that:
1. the metallized optical fiber sensor is embedded into the pipeline anti-corrosion coating, the ester coating on the surface of the common optical fiber is replaced by metal, the strength is high, the corrosion is resistant, the aging is not easy to occur, the monitoring stability is improved, and the service life is prolonged.
2. The metallized optical fiber sensor is spirally and tightly wound on a gas pipeline at a certain pitch, the optical fiber covers all directions of the gas pipeline, the pitch size is calculated and tested, the fact that the optical fiber generates events at any position of the gas pipeline can be captured, and the sensing precision is improved.
3. The metallized optical fiber sensor is positioned between the anticorrosive coating and the gas pipeline, the optical fiber can be tightly attached to the gas pipeline, physical quantities such as temperature, vibration, strain and the like generated on the gas pipeline can be directly transmitted to the optical fiber, then the optical signal can be analyzed through Brillouin effect, Raman effect and Rayleigh effect of three devices by the monitoring system, strain, temperature and vibration data of the pipeline along the way can be given, the position of an event can be accurately positioned, and the monitoring accuracy is guaranteed.
4. According to the traditional pipeline optical fiber monitoring method, a plurality of optical fibers are embedded to ensure that the pipeline is covered in an all-round mode, and the monitoring mode can monitor a plurality of parameters such as temperature, vibration and strain of the gas pipeline simultaneously only by one optical fiber, so that the cost is saved.
Drawings
FIG. 1 is a structural diagram of an anti-corrosion gas pipeline of an embedded metallized optical fiber sensor according to the present invention;
fig. 2 is a schematic diagram of a monitoring system of an anti-corrosion gas pipeline with a pre-embedded metallized optical fiber sensor according to the invention.
In the figure: 1. a gas pipeline; 2. an anti-corrosion coating; 3. a metallized fiber optic sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The anti-corrosion gas pipeline of the pre-buried metalized optical fiber sensor of the embodiment is shown in fig. 1 and comprises a gas pipeline 1, a metalized optical fiber sensor 3 is wound on the outer surface of the gas pipeline 1, the metalized optical fiber sensor 3 is wound on the gas pipeline 1 in a spiral manner in a clinging manner, an anti-corrosion coating 2 is arranged on the outer surface of the gas pipeline 1, the anti-corrosion coating 2 comprises a bottom layer, a middle layer and a surface layer, the bottom layer is an epoxy powder layer, the middle layer is an adhesive layer, the surface layer is a polyethylene layer, the metalized optical fiber sensor 3 is positioned between the anti-corrosion coating 2 and the gas pipeline 1, the metalized sensor 3 comprises a metalized area, a tail fiber and an optical fiber connector, the tail fiber is led out from the metalized area, the end part of the tail fiber is connected with the optical fiber connector, the metalized area comprises two metalized sub-layers, the first metalized sub-layer is deposited on the surface of, the second metalized sublayer is plated on the surface of the first metalized sublayer by an electroplating method, and the diameter of the metalized area is 0.4-1.2 mm.
The metallized optical fiber sensor 3 is embedded into the anti-corrosion coating 2, and an ester coating layer on the surface of a common optical fiber is replaced by metal, so that the intensity is high, the corrosion is resistant, and the aging is not easy to occur; the metallized optical fiber sensor 3 is tightly wound on the gas pipeline 1 at a certain pitch, the optical fiber covers all directions of the gas pipeline 1, the pitch size is calculated and tested, the optical fiber can be guaranteed to capture events generated by the gas pipeline 1 at any position, and the sensing precision is improved; the metallized optical fiber sensor 3 is positioned between the anticorrosive coating 2 and the gas pipeline 1, the optical fiber can be tightly attached to the gas pipeline 1, and physical quantities such as temperature, vibration, strain and the like generated on the gas pipeline 1 can be directly transmitted to the metallized optical fiber sensor 3, so that the monitoring accuracy is ensured; a plurality of parameters such as temperature, vibration, strain and the like of the gas pipeline 1 can be monitored simultaneously by only one optical fiber of one group of gas pipeline 1, and the cost is saved.
The monitoring system of the corrosion-resistant gas pipeline of the embedded metalized optical fiber sensor in the embodiment is shown in fig. 2 and comprises the corrosion-resistant gas pipeline of the embedded metalized optical fiber sensor.
The testing device further comprises an optical switch, a BOTDA Brillouin optical time domain analyzer for measuring strain of the gas pipeline 1, a DAS distributed sound analyzer for measuring vibration of the gas pipeline 1 and a DTS distributed optical fiber temperature measuring instrument for measuring temperature of the gas pipeline 1.
The BOTDA Brillouin optical time domain analyzer is based on stimulated Brillouin scattering effect, and utilizes two laser light sources with ultra-narrow line widths, namely pump light (pulse light signals) and probe light (continuous light signals), to be respectively injected into a sensing optical fiber, and the probe light signals are measured at the pulse light end of the sensing optical fiber, and high-speed data acquisition and processing are carried out. When the frequency difference between the pump light and the probe light is equal to the Brillouin frequency shift of a certain section in the optical fiber, the stimulated Brillouin amplification effect occurs in the region, and energy transfer occurs between the two beams of light. By scanning the frequency of the detection light, the Brillouin spectrum of any point along the optical fiber can be obtained, so that distributed strain measurement can be obtained.
The DAS distributed sound analyzer utilizes the characteristic that the optical fiber is sensitive to sound (vibration), when external vibration acts on the sensing optical fiber, due to the elasto-optical effect, the refractive index and the length of the optical fiber are slightly changed, so that the phase of a transmission signal in the optical fiber is changed, and the light intensity is changed. The detection of the vibration event can be realized by monitoring the intensity change of Rayleigh scattering optical signals before and after vibration, and the simultaneous accurate positioning of multiple vibration events is realized.
The DTS distributed optical fiber thermometer measures the temperature and is based on the spontaneous Raman scattering effect. After a high-power narrow-pulse-width laser pulse LD is incident to a sensing optical fiber, laser interacts with optical fiber molecules to generate extremely weak back scattering light, wherein the anti-stokes temperature is sensitive and is signal light; the stokes temperature is insensitive and is reference light, and the temperature can be calculated according to the light intensity ratio of the two.
If the gas pipeline 1 is damaged, the gas pipeline 1 can generate strain change; if the gas pipeline 1 leaks, the temperature of the leaking part can change; if the gas pipeline 1 corrodes, the thickness of the wall of the gas pipeline 1 changes, and the high-pressure gas passing through the gas pipeline 1 can enable the pipeline to vibrate.
After the anti-corrosion gas pipelines 1 of the pre-buried metalized optical fiber sensors 3 are connected in series through optical fiber connectors, in order to enable one metalized optical fiber in the gas pipeline 1 to be simultaneously connected with three devices to respectively measure strain, vibration and temperature, the optical fiber connector on the last gas pipeline 1 is respectively connected with a BOTDA Brillouin optical time domain analyzer, a DAS distributed sound analyzer and a DTS distributed optical fiber temperature measuring instrument through optical switches, the devices comprise the BOTDA Brillouin optical time domain analyzer (for measuring strain), the DAS distributed sound analyzer (for measuring vibration) and the DTS distributed optical fiber temperature measuring instrument (for measuring temperature), optical signals in the three devices alternately enter the metalized optical fiber sensors 3 buried in the anti-corrosion coating layer 2 through the optical switches, if the pipelines of the gas pipeline 1 are damaged, leaked or corroded along the way, the Brillouin effect, the Raman effect and the Rayleigh effect of the three devices are passed through, analysis of the optical signal gives strain, temperature and vibration data along the pipeline and pinpoints where the event occurred.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a pre-buried metallized optical fiber sensor's anticorrosive gas pipeline, includes gas pipeline (1), its characterized in that: the outer surface winding of gas pipeline (1) has metallized optical fiber sensor (3), just metallized optical fiber sensor (3) heliciform hugs closely the winding on gas pipeline (1), the surface of gas pipeline (1) is provided with anticorrosive coating (2), metallized optical fiber sensor (3) are located between anticorrosive coating (2) and gas pipeline (1).
2. The corrosion-resistant gas pipeline with the embedded metalized optical fiber sensor as recited in claim 1, characterized in that: anticorrosive coating (2) include bottom, intermediate level and surface course, the bottom is epoxy powder layer, the intermediate level is the adhesive layer, the surface course is the polyethylene layer.
3. The corrosion-resistant gas pipeline with the embedded metalized optical fiber sensor as recited in claim 1, characterized in that: the metallized sensor (3) comprises a metallized area, a tail fiber and an optical fiber connector, wherein the metallized area of the tail fiber is led out, and the end part of the tail fiber is connected with the optical fiber connector.
4. The corrosion-resistant gas pipeline with the embedded metalized optical fiber sensor as recited in claim 3, characterized in that: the metalized area comprises two groups of metalized sublayers, the first metalized sublayer is deposited on the surface of the optical fiber through a chemical method, and the second metalized sublayer is plated on the surface of the first metalized sublayer through an electroplating method.
5. The corrosion-resistant gas pipeline with the embedded metalized optical fiber sensor as recited in claim 4, is characterized in that: the diameter of the metallized area is 0.4-1.2 mm.
6. The utility model provides a monitoring system of anticorrosive gas pipeline of pre-buried metallized optical fiber sensor which characterized in that: an anti-corrosion gas pipeline comprising an embedded metallized optical fiber sensor according to any one of claims 1 to 5.
7. The monitoring system of the pre-buried metallized optical fiber sensor anticorrosion gas pipeline as claimed in claim 6, characterized in that: the BOTDA/optical time domain analyzer is characterized by further comprising an optical switch, a BOTDA Brillouin optical time domain analyzer, a DAS distributed sound analyzer and a DTS distributed optical fiber thermometer.
8. The monitoring system of the pre-buried metallized optical fiber sensor anticorrosion gas pipeline, according to claim 7, is characterized in that: the output end of the metallized optical fiber sensor (3) is respectively connected with a BOTDA Brillouin optical time domain analyzer, a DAS distributed sound analyzer and a DTS distributed optical fiber thermometer through an optical switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910952690.3A CN110595519A (en) | 2019-10-09 | 2019-10-09 | Pre-buried metallization optical fiber sensor's anticorrosive gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910952690.3A CN110595519A (en) | 2019-10-09 | 2019-10-09 | Pre-buried metallization optical fiber sensor's anticorrosive gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110595519A true CN110595519A (en) | 2019-12-20 |
Family
ID=68865868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910952690.3A Pending CN110595519A (en) | 2019-10-09 | 2019-10-09 | Pre-buried metallization optical fiber sensor's anticorrosive gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110595519A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414930A (en) * | 2020-11-09 | 2021-02-26 | 西南石油大学 | Oil gas pipeline intelligent corrosion monitoring system based on multichannel optical fiber perception |
| GB2610153A (en) * | 2021-03-11 | 2023-03-01 | Craley Group Ltd | Pipe monitoring |
-
2019
- 2019-10-09 CN CN201910952690.3A patent/CN110595519A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414930A (en) * | 2020-11-09 | 2021-02-26 | 西南石油大学 | Oil gas pipeline intelligent corrosion monitoring system based on multichannel optical fiber perception |
| CN112414930B (en) * | 2020-11-09 | 2022-05-24 | 西南石油大学 | Oil gas pipeline intelligent corrosion monitoring system based on multichannel optical fiber perception |
| GB2610153A (en) * | 2021-03-11 | 2023-03-01 | Craley Group Ltd | Pipe monitoring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108918405B (en) | Online monitoring system and method for corrosion prevention effect of oil well pipeline | |
| CN109140250B (en) | Gas-liquid transport pipeline leakage point on-line monitoring system based on distributed optical fiber sensing | |
| CN103048588B (en) | Method and system for on-line locating power cable fault | |
| KR100945290B1 (en) | Pipe and system detecting breakdown and leakage of pipe by fiber-optic calbe | |
| Tang et al. | A review on fiber optic sensors for rebar corrosion monitoring in RC structures | |
| CN206770993U (en) | A kind of THM coupling optical fiber sensing system for line leakage | |
| CN204881661U (en) | Improve distributed optical fiber sensing system spatial resolution and positioning accuracy's optical fiber sensor | |
| CN107990836A (en) | A kind of pipelines and petrochemical pipelines strain and temperature online monitoring system and method | |
| WO2008017276A1 (en) | A distributed optical fiber warning and sensing system for oil and gas pipeline | |
| CN110595519A (en) | Pre-buried metallization optical fiber sensor's anticorrosive gas pipeline | |
| CN2809618Y (en) | Distributed optical fiber temperature sensing and monitoring device for positioning pipeline leakage | |
| Bassil | Distributed fiber optics sensing for crack monitoring of concrete structures | |
| CN101818640A (en) | Fully distributed device and method for monitoring underground working temperature of oil-water well based on Raman scattered light time-domain reflectometer | |
| CN105136176A (en) | Fiber optic sensor for improving spatial resolution and positioning precision of distributed optical fiber sensing system, and manufacturing method thereof | |
| CN201765352U (en) | Sea water temperature profile measuring optical cable based on optical fiber Brillouin scattering principle | |
| CN204086134U (en) | A kind of corrosive pipeline detector | |
| CN113375879B (en) | Multi-parameter multi-mode high-precision pipeline leakage monitoring and positioning system | |
| CN210922656U (en) | Pre-buried metallization optical fiber sensor's anticorrosive gas pipeline and monitoring system thereof | |
| Cataldo et al. | Microwave reflectometric systems and monitoring apparatus for diffused-sensing applications | |
| Ravet et al. | Extended distance fiber optic monitoring for pipeline Leak and ground movement detection | |
| CN112378556A (en) | Optical fiber sensing-based method for monitoring concrete stress on inner wall of pipe jacking pipe joint | |
| CN111337062A (en) | Water seepage blind ditch damage detection system based on distributed optical fibers and construction and detection method | |
| CN201417140Y (en) | Distributed optical-fiber Rayleigh/Raman-scattering-photon strain/temperature sensor | |
| CN103439630A (en) | Power cable fault point positioning method and system | |
| CN114674454B (en) | Concrete temperature monitoring system and method based on fiber bragg grating array sensing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |