CN102305352A - Online monitoring system for corrosion state of oil and gas pipelines and method thereof - Google Patents
Online monitoring system for corrosion state of oil and gas pipelines and method thereof Download PDFInfo
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Abstract
The invention provides an online monitoring system for the corrosion state of oil and gas pipelines and a method thereof, which can monitor sensitive corrosion points, such as an elbow, liquid accumulating parts at upper and lower slopes, and the like and insensitive corrosion points and realize the remote transmission of corrosion monitoring data in a wired or wireless manner, treat the data at a monitoring center, establish the corrosion state parameter of each point of the oil and gas pipelines via a modern digital signal treating method, judge whether the corrosion state is normal or not, and carry out the corresponding treatment and the control of the pipelines to timely monitor the corrosion state of the oil and gas pipelines so as to timely discover hidden troubles and prevent safety accidents. A three-dimensional corrosion state graph of the pipeline can be visually displayed at the monitoring center so that abnormal corrosion parts can be found out. The scheme of the system has the advantages of low cost and high benefit, and the key is that the system can realize real-time monitoring based on the prior art; and more important, the system can be applied to monitoring the corrosion state of newly-built long oil and gas pipelines such as pipelines for transporting the natural gas from the West to the East so that the system has a very wide market prospect. The oil and gas pipelines can be laid on the ground or buried under the ground.
Description
Technical field
The invention belongs to petroleum resources Development Engineering technical field, particularly the design and the monitoring method of oil-gas pipeline corrosion state on_line monitoring system in the Oil-Gas Storage and Transportation Engineering; This system and method goes for ground and underground all Corrosion of Pipeline condition monitorings, also goes for the monitoring to other status parameters of pipeline; Simultaneously, this system and method can also be applied to non-pipeline, other, similar system monitoring.
Background technique
Condition has been created in improving constantly to the development and the application of line leakage technology of China's oil and gas pipes monitoring automation level; But this technology is still immature at home at present; Owing to receive the restriction of multiple factor; Only limit to some simple application; Do not give full play to the effect of automatic monitoring system system; Face " problems such as the scheduling of oil gas product pipelines such as West-east Gas, management, maintenance, it is then particularly important to explore a kind of more efficiently real-time oil-gas pipeline corrosion monitoring method.
The on-line corrosion monitoring technology is exactly an electronic technology that is used for measuring channel, device interior etch state that closely grows up during the last ten years.Can be under the situation of the normal operation of equipment the inner corrosion rate of measuring equipment, be a kind of reliable and effective means of control corrosion.In conjunction with multiple corrosion monitoring process, the corrosion monitoring technology has advantages such as quick, accurate, easy and simple to handle.
The main purpose of oil-gas pipeline corrosion status monitoring is:
(1) monitoring pipeline and equipment internal corrosion speed are constantly grasped fed sheet of a media corrosivity degree change in the production process;
(2) effect and the protection period of monitoring corrosion inhibitor, the effect of the assessing various corrosion inhibitor effectively row filter of going forward side by side is found out the best applications condition of these corrosion inhibitor, optimizes corrosion inhibitor filling technology;
(3) etch state and the corrosion type of oil and gas pipes diverse location under the grasp corrosive environment.
Adopt advanced corrosion supervisory system and method can avoid the malicious event that causes because of corrosion, and the heavy economic losses that brings thus.
The corrosion monitoring theory and technology has been obtained no small development in four ten years, but that its commercial Application can not show a candle to guard technology development is so rapid, and takes protective measures to compare energetically not match.Its main cause has the following aspects:
1. corrosion monitoring is lacked correct understanding, the manager never is placed on corrosion monitoring on the sufficiently high position;
2. technical difficulty is big; The production of comparing unlike anti-corrosion agent with anti-corrosion agent is easy to grasp; In addition; Anti-corrosion agent is article of consumption; For production and distributors, be easy to make a profit, therefore begin from the eighties, medicament market is burning hot unusually; But corrosion monitoring company does not increase, and causes lacking complete set technology and veteran project leader;
3. the long-term interest that corrosion monitoring is brought lacks confidence;
4. obscure with offline inspection means such as checking flaw detection;
5. whether the corrosion monitoring The Application of Technology can bring influence to safety and production;
Domestic in this respect situation is with international similar.
From the eighties, corrosion monitoring has been had clearer understanding in the world, preventing trouble before it happens obtains well recognized.Oil such as the U.S., Britain, chemical company are used for refining, water treatment, corrosion inhibitor research, pipeline monitoring with various corrosion monitoring technology.External corrosion monitoring research is morning relatively, and product is also relatively more complete.Concrete has: U.S. RCS, the CAPCIS of InterCorr company, Britain, CORMON etc.U.S. RCS company and Metal Samples company all are the companies that specializes in corrosion monitoring product development and sale; Major product has ER resistance probe corrosion measurement appearance; LPR linear polarization corrosion measurement appearance; The quick corrosion monitor of Microcor (magnetic strength method), HP (Hydrogen Permeation) oozes the hydrogen monitor.The online corrosion detection system of CorrTran has been invented in German Pepperl+Fuchs in 2004 and U.S.'s tackling key problem that corrosion research is united.CorrTran adopts and to have the advanced harmonic distorsion analytical technology of patent and analyze general corrosion, adopts the electrochemistry noise analytical technology to analyze the analysis means of the existence of local etching, is current state-of-the-art corrosion analysis system.Britain CORMON company since nineteen ninety-nine develops the novel corrosion on-line monitoring of CEION equipment.The CEION technology not only has very high measurement sensitivity and very high Measurement Resolution, and the life-span of probe can reach the measured design of plant life-span, need not to change.This technology can be used for the corrosion measurement of various media such as You ﹑ Shui ﹑ Qi ﹑ soil.
According to a domestic anticorrosive work meeting introduction in 1998, the Chiba, Japan oil refinery was set up full factory corrosion monitoring net, and this corrosion monitoring network that covers full factory is that enterprise has brought safety in production more than ten years accident free.This message has produced no small shock to domestic petroleum chemical industry with corrosion scientific and technological circle, has also obtained many inspirations, to promoting the immeasurable effect that developed in depth of domestic corrosion monitoring.
The corrosion monitoring technology of China is started late, and is comparatively backward with respect to the comparatively ripe corrosion monitoring technology that has abroad developed.General status is that the corrosion on-line monitoring obtains the attention of Sinopec Group, repeatedly sets up the project and makes a breakthrough, like " the corrosion monitoring Study on Technology of high temperature position " etc.The on-line monitoring of corrosion has obtained the great attention of part enterprise too; Calendar year 2001 Zhenghai oil-refining chemical Co., Ltd, factory of shanghai refinery, West Pacific Petro chemical Co. Ltd. Dalian, Liaohe Oil Field general petrochemicals factory etc., set up atmospheric and vacuum distillation unit corrosion real time on-line monitoring net respectively, subtract three subtract four line high temperature corrosion on-line monitoring systems, primary distillation tower head space cooler is imported and exported corrosion real time on-line monitoring system, vacuum tower head space cooler tube bank etch state real-time monitoring system.Above-mentioned enterprise is providing successful experience for other enterprise aspect the corrosion on-line monitoring.Adhere to testing all the year round in most enterprises aspect the regular spot thickness measurement of equipment, the prevention burst accident has been played important function.The problem that exists: most enterprises lack the foundation that the corrosion prison is detected database; Professional's instability brings the discontinuous or integral level of work to can not get sustainable development.
Aspect the monitoring of moisture transport corrosive pipeline, domestic Tarim Basin, general light, the oldish district of Long Gang and Chongqing of Sichuan have carried out a large amount of explorations, have obtained many valuable experiences.But, do not appear in the newspapers as yet for the on-line corrosion monitoring of the such long distance pipeline of picture transfering natural gas from the west to the east.
Summary of the invention
The objective of the invention is: a kind of oil-gas pipeline corrosion state online monitoring system and method thereof are provided; Can be under the prerequisite of oil and gas pipes proper functioning; Realize the monitoring of corrosion-susceptible point such as elbow, climb and fall hydrops place and whole oil-gas pipeline etch state; And the remote transmission of realization corrosion monitoring data; Reach real-time corrosion status monitoring to the oil gas long distance pipeline; Set up oil-gas pipeline etch state database, show the etch state 3-D graphic.
To achieve these goals; Patent of the present invention solves the technological scheme that its technical problem adopted: based on wireless transmission or line transmission systems such as " Big Dipper " position fixing and navigation systems; Realize the remote transmission of oil gas long distance pipeline corrosion data, having proposed to adopt corrosion probe monitoring system, corrosion coupon monitoring system, ultrasonic wall thickness monitoring system, phased-array ultrasonic corrosion monitoring system is the oil-gas pipeline corrosion state online monitoring system scheme of core.Specifically comprise following content:
1) corrosion monitoring process of setting of corrosion monitoring point and employing.Analyze according to long distance pipeline technological process and topography and geomorphology situation, concrete corrosion monitoring point is set.Adopt weightless lacing film, inductance or resistance probe, ultrasonic wall thickness monitoring system, phased-array ultrasonic corrosion monitoring system to monitor to routine point; Flexible ultrasonic ripple wall thickness monitoring system and phased-array ultrasonic corrosion monitoring system are made up according to certain array pattern by a plurality of ultrasonic wave sensors; Require to carry out the winding of multi-angle and direction according to monitoring along the oil and gas pipes outer wall, its position both can be installed in corrosion-susceptible point places such as elbow, climb and fall hydrops place; According to the flow dynamics analysis result the circumferentially monitoring of flexible ultrasonic ripple fixed point is implemented in the place that elbow, low lying areas pipeline etc. possibly produce ponding;
2) storage of corrosion monitoring data, remote transmission and data analysis.Monitoring probe is to the collection of corrosive pipeline data; Immediately be stored among the MT-9485A; And the data conversion storage after will sampling through telecommunication cable is to the ML-9500B data recorder; Then; With data through wireless or wire transmission; Through the correcting data error adapter data are carried out the error correction coupling in processing center, last, in computer, utilize the data after related software mates error correction to carry out corrosion analysis;
3) online etch state 3-D graphic shows.According to each pitting corrosion situation of underground oil-gas pipeline is set up three-dimensional mathematical model; Adopt the etch state of the non-monitoring point of interpolation fitting according to the actual etch state that records of this model and each corrosion monitoring point, make up underground oil and gas pipeline each point position etch state real-time three-dimensional model;
4) distance transmission system of corrosion monitoring data.Be transferred to " Big Dipper " terminal after Monitoring Data sensor, controller compiled, utilize " Big Dipper " position fixing and navigation system that the remote data at all terminals is transferred to corrosive pipeline monitoring command center;
5) command center analyzes according to pipeline each point etch state, and according to certain threshold values, it is normal, unusual to judge etch state, and takes the handled measure; For normal state, output report data etc. then; For abnormal state; Then carry out acoustooptic alarm prompting and with note/email notification administrative staff in control centre; Regulate output value to on-the-spot end, intelligent diagnostics analysis, corrosion and location, ascertain the reason, measure formulating and implementing, and record data, take measures and effect.
Innovation of the present invention and characteristic
1) present, domestic do not have still that a cover can " this type of West-east Gas long oil feed channel be carried out the system schema and the mature technique of corrosion monitoring to similar; And this corrosion monitoring system can adopt ripe targetedly monitoring means, its practical, wide application to the pipeline different parts according to field condition;
2) this scheme not only can realize monitoring on prior art, the more important thing is, can be applicable to that newly-built similar " this type of West-east Gas long oil feed channel is carried out corrosion monitoring, and its market prospects are extensive;
3) this scheme utilizes " Big Dipper " position fixing and navigation system to realize the both-way communication of all terminals and corrosive pipeline Surveillance center, is convenient in time scent a hidden danger, and realizes the real-time security management of whole tubing.
Description of drawings
Fig. 1 is this patent workflow diagram.
Fig. 2 is the distance transmission system block diagram of this patent; Among the figure, adopt " big-dipper satellite " to realize the remote transmission of corrosive pipeline data and the bi-directional communication function of assurance data.
Fig. 3 is the lacing film type schematic representation that this patent adopts; Among the figure, (a) be the bar shaped lacing film, can estimate the risk of monitoring point according to the evidence of corrosion on lacing film surface; (b) be the porous lacing film,, be used to estimate surperficial sediment density according to the etch state in different holes; (c) be discoid lacing film, the corrosion situation of simulation tube wall is applicable to big-diameter pipeline.
Fig. 4 is intrusive mood probe and the lacing film scheme of installation that this patent adopts; Among the figure, (a) being probe system and assembling set, (b) is lacing film system and assembling set.1 is the rubber protective cover among the figure, the 2nd, and hollow seal plug, the 3rd, welding pedestal, the 4th, probe, the 5th, monitoring test piece.
Fig. 5 is wall thickness leggy fixed point continuous on line monitor RIGHTRAX wall thickness monitoring system profile and the scheme of installation that this patent adopts.
Fig. 6 is the intrusive mood corrosion probe pictorial diagram that this patent adopts.
Fig. 7 is collection, storage, the transmission course figure of the corrosion data of this patent.1 is probe among the figure, the 2nd, and probe interface, the 3rd, data acquisition unit, the 4th, transmission cable, the 5th, data storage download interface, the 6th, data converter, the 7th, computer.
Embodiment
Detail below in conjunction with detailed description of the drawings patent oil-gas pipeline corrosion state on_line monitoring scheme:
As shown in Figure 1, provided the corrosion monitoring flow chart of this patent; At first; Be provided with to long oil and gas pipeline hot spot monitoring; Adopt different devices to monitor to different positions; And can confirm the type selecting of corrosion coupon according to conduit types and monitoring objective; And use RIGHTRAX flexible ultrasonic ripple wall thickness monitoring system, phased-array ultrasonic monitoring system particularly to monitoring at corrosion-susceptible points such as elbow, climb and fall hydrops places; At oil and gas pipes monitor terminal is set, gathers in real time and transmission pipeline etch state relevant parameter signal; Secondly, the corrosion parameter signal is carried out analog-to-digital conversion or signal conversion, compressed encoding; The 3rd; Data behind the compressed encoding are transferred to each main frame of Surveillance center through wireless network or wire communication; Wherein, wireless transmission be will monitoring all kinds of corrosion datas compile and transfer to " Big Dipper " terminal, finally transfer to monitoring command center through " big-dipper satellite "; The 4th; Each main frame is handled the signal that receives; Reservoir conduit corrosion parameter real time data; In conjunction with historical data; Analyze etch state; Set up the oil-gas pipeline corrosion slip condition database, demonstrate oil-gas pipeline corrosion state 3-D graphic, and according to the pipeline each point etch state control command of handling it; At last, the control command information after handling is outputed to the scene, realize control corresponding.
As shown in Figure 2; What provide is the distance transmission system block diagram of this patent; Be transferred to " Big Dipper " terminal after Monitoring Data sensor, controller compiled, utilize " Big Dipper " position fixing and navigation system that the remote data at all terminals is transferred to corrosive pipeline monitoring command center.
As shown in Figure 3, what provide is the lacing film type map of this patent, and corrosion coupon is applicable to various media environments, and handle through polishing on the surface of lacing film, and specification meets NACE RP 0775 and ASTM G1.Regularly take out and weigh, can find the corrosion rate of monitoring medium according to international standard.(a) be the bar shaped lacing film, can estimate the risk of monitoring point according to the evidence of corrosion on lacing film surface; (b) be the porous lacing film,, be used to estimate surperficial sediment density according to the etch state in different holes; (c) be discoid lacing film, the corrosion situation of simulation tube wall is applicable to big-diameter pipeline.Concrete specification is: (1) film hangers material: stainless steel; (2) lacing film material: identical with pipeline material; (3) be suitable for pressure: be no more than 40Mpa.
As shown in Figure 4, the probe of this patent that provides and lacing film installation diagram adopt 2 international sleeve pipes to insert form, with the carrier of hollow (solid) sealing plug as probe and film hangers, are installed on the monitoring pipeline section.By instrument, can easily under year pressure situation, change probe (lacing film).Assembly comprises: probe, rubber protective cover, mounting base (SOCKET WELDING formula, butt welding formula, flange-type), empty (reality) heart sealing plug.Applicable scope: gas medium, pressure medium can be greater than 10MPa.
As shown in Figure 5; What provide is RIGHTRAX wall thickness monitoring system profile and the installation diagram that this patent adopts; This figure uses is fix a point circumferential method or the circumferential method monitoring pipeline corrosion of phased-array ultrasonic view of ultrasound; With sensor rings such as ultrasound around monitored tube wall, detecting tube wall erosion situation.Use the M2 sensor directly to read one-tenth-value thickness 1/10, can store at most, download data on the data processing system through WINHOSTP software from 100 M2 sensor thickness data and A-sweep waveform thereof; Device can be installed by self-sticking type, can cover any material that is used to protect pipeline thereon after the installation, and promptly pipeline can restore to the original state.Can be in following environment proper functioning: 10 ℃～50 ℃ of operating temperatures, power supply: 220V, 50Hz, working environment relative moisture is below 85%.Data can form, the mode of figure shows, institute goes out report should be compatible with MS Word or MS Excel.This instrument is specially adapted to the online fixed point monitoring of corrosion-susceptible points such as the elbow, climb and fall hydrops place of oil gas long distance pipeline.
As shown in Figure 6, what provide is the installation diagram of probe on pipeline of this patent, and probe adopts the plug-in type mode to connect.
As shown in Figure 7; That provide is collection, storage, the transmission course figure of the corrosion data of this patent; Monitoring probe is to the collection of corrosive pipeline data; Immediately be stored among the MT-9485A; And the data conversion storage after will sampling through telecommunication cable then, is downloaded to data converter with data to the ML-9500B data storage; At last, in computer, utilize related software that corrosion data is analyzed.
Claims (10)
1. oil-gas pipeline corrosion state online monitoring system and method thereof; It is characterized in that: this system is made up of with a plurality of on-site supervisions terminal that is arranged on oil-gas pipeline the Surveillance center that is located at oil and gas pipes monitoring and managerial department, and this Surveillance center links to each other with each on-site supervision terminal respectively through wired or wireless mode; Said on-site supervision terminal is used for gathering in real time the relevant parameter signal of etch state of oil and gas pipes, transmits or downloads to Surveillance center, and carry out the various monitor commands that Surveillance center passes back; Said Surveillance center handles the parameter signal relevant with etch state that receives in real time; Set up the database of whole oil-gas pipeline corrosion state; Show oil-gas pipeline corrosion state 3-D graphic, generate various monitor commands according to the corrosion situation simultaneously and send to the on-site supervision terminal; Said on-site supervision terminal comprises: corrosion coupon monitoring system, inductance or the resistance probe monitoring system, ultrasonic wall thickness monitoring system, the phased-array ultrasonic corrosion monitoring system that are arranged on each oil and gas pipes; Said on-the-spot corrosion monitoring point is provided with; Analyze according to long distance pipeline technological process and topography and geomorphology situation; The probability that just occurs according to extent of corrosion is provided with the concrete corrosion monitoring point and the distance of adjacent monitoring point; Uncorruptible conventional point is adopted weightless hanging slice method; Inductance or resistance probe method; The ultrasound circumferential method of fixing a point; One or more monitoring pipeline corrosion situation in the circumferential method of phased-array ultrasonic are to elbow; Ultrasound fix a point circumferential method or the circumferential method monitoring method of phased-array ultrasonic are implemented in the place that is prone to be corroded that low lying areas pipeline etc. possibly produce ponding.
2. system and method thereof according to claim 1, it is characterized in that: affiliated supervisory system can adopt intrusive mood monitoring instrument or non-intruding monitor instrument, selects metal erosion lacing film monitoring point according to field condition; The optional combination of corrosion monitoring instrument with homogeneous corrosion on-line monitoring probe, local etching on-line monitoring probe, wall thickness leggy fixed point continuous on line monitor and multiple instrument; Monitoring cell is contained the on-line corrosion monitoring at the corrosion-susceptible point places such as homogeneous corrosion, local etching and elbow, climb and fall hydrops place of pipeline under the monitoring system; Monitoring system is passed through real-time transmission data; Supervise each monitor terminal state that works online; To abnormal state, send instruction by Surveillance center and handle.
3. system and method thereof according to claim 1, it is characterized in that: said Surveillance center mainly comprises the alarm that links to each other with main frame, and is stored in the corresponding corrosion monitor supervisor in the main frame in advance; The corrosion monitoring terminal is to the collection of corrosive pipeline data; Instant storage; And the data transmission after will sampling through wired or wireless transmission, unloading are to data recorder; Then data are downloaded to and utilize related software analysis in the computer; Set up the oil-gas pipeline corrosion slip condition database, demonstrate oil-gas pipeline etch state 3-D graphic.
4. system and method thereof according to claim 1 is characterized in that: the corrosion monitoring data can be through wire transmission with corrosion parameter from the on-site supervision terminal transmission to corrosive pipeline Surveillance center; Also can be transferred to corrosion Surveillance center through long distance wireless; Various Monitoring Data sensors, controller are transferred to " Big Dipper " terminal after compiling, utilize " Big Dipper " position fixing and navigation system that the remote data at all terminals is transferred to corrosive pipeline Surveillance center; In Surveillance center data are handled, set up the oil-gas pipeline corrosion slip condition database, demonstrate oil-gas pipeline etch state 3-D graphic.
5. system and method thereof according to claim 1; It is characterized in that: monitor terminal is set at oil and gas pipes; The Surveillance center that comprises a plurality of computer mains is set in oil-gas pipeline corrosion Surveillance center; Said each monitor terminal carries out communication through the main frame of wired or wireless mode and Surveillance center, and this method comprises the steps:
1) the real-time collection and transmission pipeline etch state relevant parameter signal;
2) the corrosion parameter signal is carried out analog-to-digital conversion or signal conversion, compressed encoding;
3) data behind the compressed encoding are transferred to each main frame of Surveillance center through wireless network or wire communication;
4) each main frame is handled the signal that receives, and reservoir conduit corrosion parameter real time data is in conjunction with historical data; Analyze etch state; Set up the oil-gas pipeline corrosion slip condition database, demonstrate oil-gas pipeline corrosion state 3-D graphic, and according to the pipeline each point etch state control command of handling it;
5) the control command information after will handling outputs to the field control center, realizes control corresponding.
6. like system and method thereof as described in the claim 3, it is characterized in that: said oil-gas pipeline corrosion state three-dimensional data is to produce through following steps, thereby shows 3-D graphic:
1) through to situation such as the position of underground oil and gas pipes, trends,, sets up this corrosive pipeline state mathematical model in conjunction with other corrosive pipeline experiences;
2) according to this corrosive pipeline situation analysis, in the position that corrosion takes place easily, on-site supervision terminal neighbor distance is short; For not being prone to the position that corrosion or corrosion situation are difficult for taking place bigger variation, on-site supervision terminal neighbor distance is long;
3) according to certain sampling time interval, sample to the etch state parameter in each on-site supervision terminal;
4) according to corrosive pipeline state mathematical model the etch state parameter of real-time sampling is carried out match, obtain whole pipe each point etch state parameter, set up the oil-gas pipeline corrosion slip condition database;
5) demonstrate oil-gas pipeline corrosion state 3-D graphic.
7. like system and method thereof as described in the claim 5, it is characterized in that: said step 4) specifically comprises:
41) said parameter information is carried out intelligent control and corrosion analysis;
42) said intelligent control and corrosion analysis result store and show;
43) according to predefined threshold values canned data is carried out the etch state analysis: when being in normal state, change step 46 simultaneously) and step 5); If abnormal state is changeed step 44 simultaneously), 45), 46) and 5);
44) main frame output early warning or alarm signal;
45) signal of abnormal state is carried out intelligent diagnostics analysis, corrosive pipeline location, provide the emergency measure method prompting that possible cause, damage sequence analysis and operator that abnormal condition produces should take;
46) to step 42) in various information inquire about, record, report output, statistical analysis and corrosive pipeline condition managing.
8. like method as described in the claim 5, it is characterized in that: the information after said step 5) will be handled outputs to the field control center and realizes control corresponding, specifically comprises:
51) monitor command with parameter outputs to the field control center: output to the field control center by normal controlling value when being in normal state; When being in abnormal state, abnormal conditions are outputed to the field control center, processing parameter is regulated according to indication in the field control center.
9. like method as described in the claim 5; It is characterized in that: in said step 2) and step 3) between also comprise the data behind the compressed encoding carried out corresponding calculated and processing at the scene: carry out judgment processing according to predefined control method and alarming value; If by analysis; Abnormal state is then exported signal triggering acoustic scene light crossing-signal; Notice field control center adjusting process parameter; Real-time video data of the touch-screen at on-site supervision terminal and curve map; And simultaneously with the information of gathering behind conversion, compressed encoding, the PORT COM by controller also is transferred to each main frame of center with wired or wireless mode.
10. system and method thereof according to claim 1, it is characterized in that: the pipeline of being monitored can be ground, also can be underground; This system and method thereof can be used for pipeline monitoring corrosion, as monitor terminal being replaced by the sensor of other purposes, also can carry out the monitoring of other parameters of pipeline; Simultaneously, this supervisory system is used for non-oil and gas pipes occasion, also can carries out the monitoring of other parameters in corresponding other places.
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