CN204086134U - A kind of corrosive pipeline detector - Google Patents
A kind of corrosive pipeline detector Download PDFInfo
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- CN204086134U CN204086134U CN201420429384.4U CN201420429384U CN204086134U CN 204086134 U CN204086134 U CN 204086134U CN 201420429384 U CN201420429384 U CN 201420429384U CN 204086134 U CN204086134 U CN 204086134U
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- terahertz
- detection system
- corrosion
- extent
- terahertz detection
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Abstract
The utility model provides a kind of corrosive pipeline detector, comprising: pipe crawling device, multiple terahertz detection and receiving trap, Terahertz detection system, data handling system and extent of corrosion display panel, wherein, the multiple probes carrying multiple terahertz detection and receiving trap are transported to pipe interior to be checked by pipe crawling device, terahertz detection and receiving trap receive the laser that Terahertz detection system sends, excite THz wave, and send the terahertz signal of pipe interior surface reflection to be checked to Terahertz detection system, Terahertz detection system generates tera-hertz spectra information transmission to data handling system according to the terahertz signal of pipe interior surface reflection to be checked, data handling system processes terahertz light spectrum information, generate the corresponding relation of terahertz light spectrum information and extent of corrosion, and be presented on extent of corrosion display panel.
Description
Technical field
The utility model relates to corrosive pipeline detection field, particularly relates to a kind of device detected corrosive pipeline, is a kind of detector carrying out corrosive pipeline degree detecting based on terahertz time-domain spectroscopic technology concretely.
Background technology
Pipeline is as the main artery of petroleum industry, and the transport for oil, rock gas is of crucial importance.But under arms in process, the inefficacies such as pipeline can be bored a hole because of reasons such as corrosion, fracture, causing oil gas to reveal, even cause the catastrophic failures such as burning, blast, is malignant tumor the most dangerous in pipeline use procedure.The reason that pipeline failure occurs is varied, cannot make peace in advance and avoid, therefore, regularly detect pipeline, and obtain the duty status of pipeline, Timeliness coverage failpoint also takes corresponding safeguard procedures to seem particularly important concerning oil gas transports engineering.
Before new technology is come out, Magnetic Flux Leakage Inspecting technology does not have kelvin effect because it neither affects by tube wall wax-layer thickness yet, add that its structure is simple, power consumption less with confidence level comparatively advantages of higher, be widely used at present on the online Corrosion monitoring of long-distance oil & gas pipeline, refinery pipe network, city planting ductwork and subsea pipeline.At this on the one hand, Canada, Britain, the U.S. marches at the forefront of the world, and the research unit that independently can produce practical leakage magnetic detection device in the world mainly concentrates on dolantin France and Japan and the industrial powers such as to add, and domestic correlation technique is then started late.Although there is the detector of autonomous innovation to come out successively, be only interior on probation among a small circle, and the confidence level detected is lower, large-scale use still from import equipment, need pay equipment and the technical service expense of great number, the man power and material of at substantial for this reason.
Therefore, solve buried pipeline because safety problem that failure fracture causes not only will develop a kind of safe, convenient, reliable detection technique, also to consider the input degree of human and material resources, unsuitable input can cause form of security or economic benefit impaired, only take the technical measures that the safety case of same pipeline adapts, guarantee safety in production and economic benefit double goal.
Terahertz (THz, Terahertz) ripple typically refers to the electromagnetic wave of frequency between 0.1THz-10THz (wavelength is at 300 μm ~ 3mm), its wave band microwave and infrared between, belong to far infrared band.Terahertz time-domain spectroscopy system is a kind of correlation detection technology, can obtain amplitude and the phase information of terahertz pulse simultaneously.Have the character of many uniquenesses such as transient state, fingerprint, high-penetration ability compared with conventional light source, therefore Terahertz all has huge using value in the energy, environmental protection, safety check, biologic medical field.
The features such as the high resolving power that tera-hertz spectra Dynamic Non-Destruction Measurement has with it, high sensitivity and nondestructive examination ability, for metallic conduit failure detection provides a kind of detection thinking newly, also do not apply the correlation technique of terahertz time-domain spectroscopic technology testing pipes corrosion at present.
Utility model content
The purpose of this utility model is to provide a kind of detector detected Metal pipeline corrosion degree, to make up the shortcoming of existing Corrosion monitoring technical deficiency.
In order to achieve the above object, the utility model embodiment provides a kind of corrosive pipeline detector, comprising: pipe crawling device, multiple terahertz detection and receiving trap, Terahertz detection system, data handling system and extent of corrosion display panel, wherein, the top of described pipe crawling device has multiple probe, described multiple terahertz detection and receiving trap lay respectively on described multiple probe, and be connected with described Terahertz detection system by optical fiber, described Terahertz detection system is connected with described data handling system, and described extent of corrosion display panel connects described data handling system, the multiple probes carrying described multiple terahertz detection and receiving trap are transported to pipe interior to be checked by described pipe crawling device, described terahertz detection and receiving trap receive the laser that described Terahertz detection system sends, excite THz wave, and send the terahertz signal of described pipe interior surface reflection to be checked to described Terahertz detection system, described Terahertz detection system generates tera-hertz spectra information transmission to described data handling system according to the terahertz signal of described pipe interior surface reflection to be checked, described data handling system processes described terahertz light spectrum information, generate the corresponding relation of terahertz light spectrum information and extent of corrosion, and be presented on described extent of corrosion display panel.
Further, in one embodiment, described terahertz detection and receiving trap comprise terahertz detector and Terahertz receiver; The laser that described terahertz detector sends for receiving described Terahertz detection system, excites THz wave; Described Terahertz receiver is for receiving the terahertz signal of THz wave through described pipe interior surface reflection to be checked.
Further, in one embodiment, described terahertz detector and Terahertz receiver are optical fiber type, and equidirectional secure bond.
Further, in one embodiment, described optical fiber is embedded in the probe connecting rod of described pipe crawling device, to be connected, to realize the transmission of signal by the probe connecting rod of described pipe crawling device through described pipe crawling device inside with described Terahertz detection system.
Further, in one embodiment, described Terahertz detection system comprises microlaser and terahertz light spectrometer; Described microlaser Emission Lasers, described laser to described terahertz detector, excites THz wave by Optical Fiber Transmission; Described terahertz light spectrometer receives the terahertz signal of described THz wave through described pipe interior surface reflection to be checked by optical fiber, generates described terahertz light spectrum information and sends described data handling system to.
Further, in one embodiment, the corresponding relation of itself and described terahertz light spectrum information and extent of corrosion, also for receiving the terahertz light spectrum information of unknown pipeline, being compared, being generated the Corrosion monitoring result of described unknown pipeline by described data handling system.
Further, in one embodiment, described extent of corrosion display panel is a display panels.
Further, in one embodiment, described Terahertz detection system is reflective Terahertz detection system.
The corrosive pipeline degree detecting instrument of the utility model embodiment, utilizes terahertz time-domain spectroscopic technology measuring channel extent of corrosion.This detecting instrument structure is simple, easy to operate, high to the detection degree of accuracy of extent of corrosion, system stability good, safe and reliable, applied widely, and have simple to operate, detect fast, data handling procedure is simple, reproducible, result degree of accuracy advantages of higher, to utilizing, terahertz time-domain spectroscopic technology testing pipes extent of corrosion is significant.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical 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 skilled 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 the corrosive pipeline detector of the utility model embodiment;
Fig. 2 is the structural representation of the pipe crawling device probe in the corrosive pipeline detector of the utility model embodiment;
Fig. 3 is the method flow diagram utilizing the corrosive pipeline detector of the utility model embodiment to carry out corrosive pipeline detection;
Fig. 4 is that the multiple spot Terahertz of the different rough surfaces that the utility model utilizes terahertz time-domain spectroscopic technology to record detects spectrum peak figure;
Fig. 5 is that the multiple spot Terahertz of the different rough surfaces that the utility model utilizes terahertz time-domain spectroscopic technology to record detects spectrum peak mean value figure;
Fig. 6 is the reflectance map of the actual corrosion iron plate that the utility model utilizes terahertz time-domain spectroscopic technology to record.
Drawing reference numeral:
2-inner-walls of duct;
3-terahertz detector;
4-pops one's head in connecting rod;
5-Terahertz receiver;
6-THz wave.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical 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.
Fig. 1 is the structural representation of the corrosive pipeline detector of the utility model embodiment.As shown in the figure, the corrosive pipeline detector of the present embodiment comprises pipe crawling device 101, multiple terahertz detection and receiving trap 102, Terahertz detection system 103, data handling system 104 and extent of corrosion display panel 105.
Wherein, the top of described pipe crawling device 101 has multiple probe, described multiple terahertz detection and receiving trap 102 lay respectively on described multiple probe, and be connected with described Terahertz detection system 103 by optical fiber, described Terahertz detection system 103 is connected with described data handling system 104, and described extent of corrosion display panel 105 connects described data handling system 104.
The multiple probes carrying described multiple terahertz detection and receiving trap 102 are transported to pipe interior to be checked by described pipe crawling device 101, described terahertz detection and receiving trap 102 receive the laser that described Terahertz detection system 103 sends, excite THz wave, and send the terahertz signal of described pipe interior surface reflection to be checked to described Terahertz detection system 103, described Terahertz detection system 103 generates tera-hertz spectra information transmission to described data handling system 104 according to the terahertz signal of described pipe interior surface reflection to be checked, described data handling system 104 processes described terahertz light spectrum information, generate the corresponding relation of terahertz light spectrum information and extent of corrosion, and be presented on described extent of corrosion display panel 105.
In the present embodiment, described terahertz detection and receiving trap 102 comprise terahertz detector and Terahertz receiver, are both positioned on the probe of pipe crawling device 101.The laser that described terahertz detector sends for receiving described Terahertz detection system, excites THz wave; Described Terahertz receiver is for receiving the terahertz signal of THz wave through described pipe interior surface reflection to be checked.Further, described terahertz detector and Terahertz receiver are optical fiber type detector and receiver, and equidirectional secure bond, thus determine that the signal received is the Terahertz reflected signal of pipe surface information.
Fig. 2 is the structural representation of the pipe crawling device probe in the corrosive pipeline detector of the utility model embodiment.As shown in the figure, multiple probe is distributed in the top of pipe crawling device 101, and its quantity can be 4,6,8 or more.Wherein, terahertz detector 3 and Terahertz receiver 5 lay respectively on crawl device probe, described optical fiber is embedded in the probe connecting rod 4 of described pipe crawling device, to be connected with described Terahertz detection system 103 through described pipe crawling device 101 inside by the probe connecting rod 4 of described pipe crawling device 101, to realize the transmission of signal.
After the probe carrying terahertz detector and receiver is transported to target detection pipe interior by pipe crawling device 101, the terahertz detector on multiple probe and receiver detect inner-walls of duct simultaneously, realize multiple spot simultaneously at line sweep.Described terahertz detector 3 receives by optical fiber the laser that described Terahertz detection system 103 sends, excite THz wave 6, THz wave is got on inner-walls of duct, inner-walls of duct reflection gives Terahertz receiver 5 with the terahertz signal 6 of inner-walls of duct information, and Terahertz receiver 5 sends the terahertz signal 6 with inner-walls of duct information to Terahertz detection system 103.
In the present embodiment, described Terahertz detection system 103 comprises microlaser and terahertz light spectrometer.Described microlaser Emission Lasers, described laser to described terahertz detector 3, excites THz wave by Optical Fiber Transmission; Described terahertz light spectrometer receives the terahertz signal of described THz wave through described pipe interior surface reflection to be checked by optical fiber, generates described terahertz light spectrum information and sends described data handling system 104 to.Wherein, terahertz light spectrometer is the integrated terahertz time-domain spectroscopy detector of small-sized height, and is reflective terahertz light spectrometer.
In the present embodiment, the corresponding relation of itself and described terahertz light spectrum information and extent of corrosion, also for receiving the terahertz light spectrum information of unknown pipeline, being compared, being generated the Corrosion monitoring result of described unknown pipeline by described data handling system 104.Data handling system 104 comprises the direct process software of inner-walls of duct Terahertz reflection time-domain spectroscopy, the database set up and data analysis software.Multi-point scanning is carried out to the pipeline of known extent of corrosion, obtains multipoint data through the direct process software of Terahertz reflection time-domain spectroscopy and process, set up the corrosion-monitoring data storehouse of extent of corrosion and terahertz light spectrum signal.According to the database obtained and data analysis software, terahertz light spectrum information and extent of corrosion are changed, the extent of corrosion evaluation result obtained intuitively is presented on extent of corrosion display panel 105.
In the present embodiment, described extent of corrosion display panel 105 can be display panels, for showing extent of corrosion evaluation result.
Fig. 3 is the method flow diagram utilizing the corrosive pipeline detector of the utility model embodiment to carry out corrosive pipeline detection.As shown in the figure, the corrosive pipeline detection method of the present embodiment comprises:
Step S101, the reflective terahertz time-domain spectroscopy signal measuring the inner-walls of duct of pipeline of not being on active service, as with reference to signal, measures the reflective terahertz time-domain spectroscopy signal of the inner-walls of duct of known different active time, as sample signal; Step S102, the terahertz time-domain spectroscopy signal of described reference signal and sample signal is carried out the frequency domain spectrogram that Fourier transform obtains reference signal and sample signal respectively, and the frequency-domain waveform of sample signal and the frequency-domain waveform of reference signal are got ratio, generate the reflectivity of the inner-walls of duct of described known different active time further; Step S103, according to described reflectivity and active time, sets up corresponding Terahertz extent of corrosion Test database; Step S104, receives the terahertz time-domain spectroscopy signal of pipeline to be checked, itself and described Terahertz extent of corrosion Test database is compared, obtains the active time of described pipeline to be checked, generates extent of corrosion evaluation result.
In the present embodiment, due to the respective change of pipe surface planarization, the i.e. change of pipe surface roughness can be caused due to the attachment etc. of spot corrosion, pitting corrosion, corrosion product in pipeline military service process.Fig. 4 is that the multiple spot Terahertz of the different rough surfaces that the utility model utilizes terahertz time-domain spectroscopic technology to record detects spectrum peak figure.Be worth standard roughness to contrast sample block to the known roughness of two kinds of processing technologys and carry out multiple spot (in the present embodiment, 6 differences got by the sample of each roughness value: dot1, dot2, dot3, dot4, dot5, dot6) detection.Can see by Fig. 4, when sample surfaces roughness is less, the time domain peak result that multiple spot detects comparatively is disperseed; Along with the increase of surfaceness, its multiple spot testing result is concentrated gradually.Identical change rule all detected under two kinds of different processing technologys, prove that this dispersiveness is correct, and only relevant with surfaceness.According to this rule, on described Corrosion monitoring instrument, to detect the terahertz light spectrum signal that obtains overstepping the bounds of propriety loose in more among a small circle simultaneously for multiple detector and receiver.Process the time domain peak data that Fig. 4 records, average and obtain rule as shown in Figure 5: roughness is less, mean value is larger.This reaction trend on reflectivity is identical.Fig. 6 is the reflectance map of the actual corrosion iron plate that the utility model utilizes terahertz time-domain spectroscopic technology to record, and illustration is the variation relation in reflectivity and reaction time.As we can see from the figure, iron plate reflectivity diminishes gradually with the growth of etching time.According to Fig. 5, Fig. 6, data rule can set up Terahertz extent of corrosion Test database.
Wherein, after described step S103 establishes Terahertz extent of corrosion Test database, also comprise: reflective terahertz time-domain spectroscopy detection is carried out to the inner-walls of duct of the known active time of multistage, verify the accuracy of described Terahertz extent of corrosion Test database, if inaccurate, correct, finally obtain accurate database.
Wherein, in described step S101, in order to improve signal to noise ratio (S/N ratio), not to be on active service described in gathering many reflective terahertz time-domain spectroscopy signal of inner-walls of duct of pipeline and the reflective terahertz time-domain spectroscopy signal of the inner-walls of duct of many known different active times, to average as final reference signal and sample signal.Such as, every sheet sample can gather 3 time-domain spectroscopy signals, averages as final reference signal and sample signal.In the present embodiment multi-point scanning is carried out to two kinds of processing technology standard roughness contrast prints, obtain time domain peak measurement result as shown in Figure 4.
The corrosive pipeline degree detecting instrument of the utility model embodiment, utilizes terahertz time-domain spectroscopic technology measuring channel extent of corrosion.This detecting instrument structure is simple, easy to operate, high to the detection degree of accuracy of extent of corrosion, system stability good, safe and reliable, applied widely, and have simple to operate, detect fast, data handling procedure is simple, reproducible, result degree of accuracy advantages of higher, to utilizing, terahertz time-domain spectroscopic technology testing pipes extent of corrosion is significant.
Apply specific embodiment in the utility model to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (8)
1. a corrosive pipeline detector, is characterized in that, comprising: pipe crawling device, multiple terahertz detection and receiving trap, Terahertz detection system, data handling system and extent of corrosion display panel;
Wherein, the top of described pipe crawling device has multiple probe, described multiple terahertz detection and receiving trap lay respectively on described multiple probe, and be connected with described Terahertz detection system by optical fiber, described Terahertz detection system is connected with described data handling system, and described extent of corrosion display panel connects described data handling system;
The multiple probes carrying described multiple terahertz detection and receiving trap are transported to pipe interior to be checked by described pipe crawling device, described terahertz detection and receiving trap receive the laser that described Terahertz detection system sends, excite THz wave, and send the terahertz signal of described pipe interior surface reflection to be checked to described Terahertz detection system, described Terahertz detection system generates tera-hertz spectra information transmission to described data handling system according to the terahertz signal of described pipe interior surface reflection to be checked, described data handling system processes described terahertz light spectrum information, generate the corresponding relation of terahertz light spectrum information and extent of corrosion, and be presented on described extent of corrosion display panel.
2. corrosive pipeline detector according to claim 1, is characterized in that, described terahertz detection and receiving trap comprise terahertz detector and Terahertz receiver;
The laser that described terahertz detector sends for receiving described Terahertz detection system, excites THz wave;
Described Terahertz receiver is for receiving the terahertz signal of THz wave through described pipe interior surface reflection to be checked.
3. corrosive pipeline detector according to claim 2, is characterized in that, described terahertz detector and Terahertz receiver are optical fiber type, and equidirectional secure bond.
4. corrosive pipeline detector according to claim 1, it is characterized in that, described optical fiber is embedded in the probe connecting rod of described pipe crawling device, to be connected with described Terahertz detection system through described pipe crawling device inside by the probe connecting rod of described pipe crawling device, to realize the transmission of signal.
5. corrosive pipeline detector according to claim 1, is characterized in that, described Terahertz detection system comprises microlaser and terahertz light spectrometer;
Described microlaser Emission Lasers, described laser to described terahertz detector, excites THz wave by Optical Fiber Transmission;
Described terahertz light spectrometer receives the terahertz signal of described THz wave through described pipe interior surface reflection to be checked by optical fiber, generates described terahertz light spectrum information and sends described data handling system to.
6. corrosive pipeline detector according to claim 1, it is characterized in that, described data handling system is also for receiving the terahertz light spectrum information of unknown pipeline, the corresponding relation of itself and described terahertz light spectrum information and extent of corrosion is compared, generates the Corrosion monitoring result of described unknown pipeline.
7. corrosive pipeline detector according to claim 1, is characterized in that, described extent of corrosion display panel is a display panels.
8. the corrosive pipeline detector according to any one of claim 1 ~ 7, is characterized in that, described Terahertz detection system is reflective Terahertz detection system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429384.4U CN204086134U (en) | 2014-07-31 | 2014-07-31 | A kind of corrosive pipeline detector |
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| CN201420429384.4U CN204086134U (en) | 2014-07-31 | 2014-07-31 | A kind of corrosive pipeline detector |
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| CN204086134U true CN204086134U (en) | 2015-01-07 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132906A (en) * | 2014-07-31 | 2014-11-05 | 中国石油大学(北京) | Pipeline corrosion detector and detection method thereof |
| CN107144347A (en) * | 2017-05-12 | 2017-09-08 | 东莞理工学院 | A kind of embedded terahertz time-domain spectroscopy instrument |
| US10643324B2 (en) | 2018-08-30 | 2020-05-05 | Saudi Arabian Oil Company | Machine learning system and data fusion for optimization of deployment conditions for detection of corrosion under insulation |
| US10871444B2 (en) | 2018-08-30 | 2020-12-22 | Saudi Arabian Oil Company | Inspection and failure detection of corrosion under fireproofing insulation using a hybrid sensory system |
| US11162888B2 (en) | 2018-08-30 | 2021-11-02 | Saudi Arabian Oil Company | Cloud-based machine learning system and data fusion for the prediction and detection of corrosion under insulation |
| US11386541B2 (en) | 2019-08-22 | 2022-07-12 | Saudi Arabian Oil Company | System and method for cyber-physical inspection and monitoring of nonmetallic structures |
-
2014
- 2014-07-31 CN CN201420429384.4U patent/CN204086134U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132906A (en) * | 2014-07-31 | 2014-11-05 | 中国石油大学(北京) | Pipeline corrosion detector and detection method thereof |
| CN107144347A (en) * | 2017-05-12 | 2017-09-08 | 东莞理工学院 | A kind of embedded terahertz time-domain spectroscopy instrument |
| US10643324B2 (en) | 2018-08-30 | 2020-05-05 | Saudi Arabian Oil Company | Machine learning system and data fusion for optimization of deployment conditions for detection of corrosion under insulation |
| US10871444B2 (en) | 2018-08-30 | 2020-12-22 | Saudi Arabian Oil Company | Inspection and failure detection of corrosion under fireproofing insulation using a hybrid sensory system |
| US11162888B2 (en) | 2018-08-30 | 2021-11-02 | Saudi Arabian Oil Company | Cloud-based machine learning system and data fusion for the prediction and detection of corrosion under insulation |
| US11386541B2 (en) | 2019-08-22 | 2022-07-12 | Saudi Arabian Oil Company | System and method for cyber-physical inspection and monitoring of nonmetallic structures |
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Granted publication date: 20150107 Effective date of abandoning: 20170104 |
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