CN203148874U - Real-time monitoring system for corrosion on inner wall of pipeline - Google Patents
Real-time monitoring system for corrosion on inner wall of pipeline Download PDFInfo
- Publication number
- CN203148874U CN203148874U CN 201320096164 CN201320096164U CN203148874U CN 203148874 U CN203148874 U CN 203148874U CN 201320096164 CN201320096164 CN 201320096164 CN 201320096164 U CN201320096164 U CN 201320096164U CN 203148874 U CN203148874 U CN 203148874U
- Authority
- CN
- China
- Prior art keywords
- corrosion
- ring
- real
- monitoring system
- time monitoring
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model relates to a real-time monitoring system for the corrosion on the inner wall of a pipeline. The real-time monitoring system comprises a corrosion ring, a reference ring, a monitoring unit and a processing unit, wherein the corrosion ring and the reference ring are concentrically connected to a pipeline to be monitored in parallel, the corrosion ring is in contact with a corrosion medium flowing through the pipeline to be monitored so as to reflect the corrosion degree of the inner wall of the pipeline to be monitored, the reference ring is in antiseptic isolation from the corrosion medium to be used as a reference standard, the monitoring unit is electrically connected with the corrosion ring and the reference ring so as to obtain a resistance value Rs of the corrosion ring and the resistance value Rr of the reference ring and transmit the resistance value Rs and the resistance value Rr to the processing unit, and the processing unit is electrically connected with the monitoring unit so as to figure out the corrosion thickness deltaH of the inner wall of the pipeline to be monitored according to the resistance value Rs and the resistance value Rr. According to the real-time monitoring system, the corrosion state in the pipeline can be continuously monitored without being limited by an environment; and the real-time monitoring system has the advantages of high sensitivity, high responding speed and all-dimensional monitoring.
Description
Technical field
The utility model relates to a kind of corrosion real-time monitoring system, more particularly, relates to a kind of inner-walls of duct corrosion real-time monitoring system.
Background technology
Pipeline transportation is a kind of important means of transportation during modern industry is produced, and in a single day the pipe-line failure accidents takes place, and not only can cause damp production, bring enormous economic loss, and can produce serious consequence to society and environment.Therefore, correctly grasp pipe-line etch state, guarantee to be of great practical significance the safe operation of oil and gas pipes.
In the last few years, inner-walls of duct corrosion real time monitoring was flourish at home and abroad.Yet, mainly be during parking maintenance for traditional inner-walls of duct corrosion monitoring, installation and taking-up lacing film detect and reach the monitoring purpose.But, for present Petroleum Production, particularly in the submarine pipeline oil transportation, be difficult to or can't accomplish parking maintenance, corrosion monitoring process such as so traditional field investigation, weight change, variation in thickness, electrochemical method, corrosion potential, hydrogen concentration monitoring, chemical analysis can not well satisfy the demand that the inner-walls of duct corrosion is monitored in real time.In the last few years, some novel, relevant with said method combined monitoring methods also occurred successively, but in the production run of reality, these methods can not be monitored the corrosion information of inner-walls of duct accurately, to satisfy engineering demand.
The utility model content
The technical problems to be solved in the utility model is that the problem that exists in the inner-walls of duct corrosion real-time monitoring system at prior art provides a kind of inner-walls of duct corrosion real-time monitoring system.
The technical scheme that its technical matters that solves the utility model adopts is:
Construct a kind of inner-walls of duct corrosion real-time monitoring system, it is characterized in that, comprise corrosion ring, reference ring, monitoring means and processing unit;
Described corrosion ring and described reference ring insert tested pipeline side by side and with one heart; Described corrosion ring contacts with corrosive medium in the described tested pipeline of flowing through, to reflect the inner wall corrosion degree of described tested pipeline; Described reference ring and the anticorrosion isolation of described corrosive medium are with as the reference benchmark;
Described monitoring means and described corrosion ring and described reference ring electrically connect, to obtain the resistance value R of described corrosion ring in real time
sResistance value R with described reference ring
r, and pass to processing unit;
Described processing unit and described monitoring means electrically connect, with according to described resistance value R
sWith described resistance value R
rCalculate the corrosion thickness △ H of described tested pipeline inwall.
Described corrosion ring and described reference ring are identical ring, and internal diameter, thickness and material are identical with described tested pipeline.
The surface of described reference ring is formed with anticorrosive coat, to realize described reference ring and the anticorrosion isolation of described corrosive medium.
Described corrosion ring and described reference ring are annulus.
Described processing unit calculates described corrosion thickness △ H according to following formula:
Wherein, R
sBe the resistance value of described corrosion ring, R
rBe the resistance value of described reference ring, H is the thickness of described tested pipeline.
This inner-walls of duct corrosion real-time monitoring system comprises constant current source, and described corrosion ring and described reference ring are series between this constant current source and the ground.
Described monitoring means comprises analog switch, amplifier module, low pass filter blocks, analog-to-digital conversion module, control module and signal transmission unit; Described analog switch is electrically connected with corrosion ring, reference ring respectively, with the resistance signal of monitoring described corrosion ring respectively and the resistance signal of described reference ring; Described amplifier module is used for amplifying the resistance signal of the described corrosion ring that monitors and the resistance signal of described reference ring, and passes to described low pass filter blocks; Described low pass filter blocks is used for stablizing the resistance signal of described corrosion ring and the resistance signal of described reference ring, is converted to digital signal by analog-to-digital conversion module again, passes to control module; Behind the corrosion loop resistance signal and the compiling of reference ring signal of described control module to reception, be passed to processing unit respectively by signal transmission unit.
This inner-walls of duct corrosion real-time monitoring system comprises display module, is used for showing described corrosion thickness △ H.
Implement inner-walls of duct corrosion real-time monitoring system of the present utility model, have following beneficial effect:
In observation process, needn't needn't take out sample to pipeline tapping, needn't remove corrosion product, can be in process of production direct, continuous monitoring corrosion condition is not subjected to the corrosive medium of pipeline transportation and the restriction of temperature.Simultaneously, the life-span of corrosion probe can be reflected the corrosion information that inner-walls of duct is real-time greater than pipeline life, and has the advantage of highly sensitive, quick response, conduct monitoring at all levels.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the connection diagram of the utility model inner-walls of duct corrosion real-time monitoring system;
Fig. 2 is the assembling synoptic diagram of corrosion ring, reference ring and the tested pipeline of the utility model inner-walls of duct corrosion real-time monitoring system.
Embodiment
Below in conjunction with specific embodiment and Figure of description the utility model is described in further details.
Fig. 1 shows the inner-walls of duct corrosion real-time monitoring system among some embodiment of the utility model, the pipe-line inner wall corrosion that this inner-walls of duct corrosion real-time monitoring system can be applicable under the marine environment is monitored in real time, and it comprises constant current source 1, corrosion ring 2, reference ring 3, monitoring means 4 and processing unit 5.Corrosion ring 2 and reference ring 3 are series between constant current source 1 and the ground, make constant current source 1 to provide stable electric current supply to corrosion ring 2, reference ring 3, with the stability of guaranteeing to monitor.Monitoring means 4 is in order to the resistance signal of monitoring corrosion ring 2 and the resistance signal of reference ring 3, and the resistance signal of the corrosion ring signal that will monitor and reference ring passes to processing unit 5, calculated the corrosion thickness △ H of tested pipeline 6 by processing unit 5.
As shown in Figure 2, in certain embodiments, corrosion ring 2 and reference ring 3 are same ring, and internal diameter, material, thickness are identical with tested pipeline 6.Corrosion ring 2, reference ring 3 insert tested pipeline 6 side by side, and concentric with tested pipeline 6.Because corrosion ring 2 and reference ring 3 be same ring, the resistance value of corrosion ring 2 equates with the resistance value of reference ring 3 before participating in corroding being connected with tested pipeline 6, and is certain, also can be to have certain proportionate relationship.When flowing through corrosive medium (for example seawater) in the tested pipeline 6, the inside surface of corrosion ring 2 contacts with corrosive medium, participates in corrosion, can reflect the real-time corrosion degree of tested pipeline 6 inwalls in real time.Reference ring 3 is protected, does not participate in corrosion, with as the reference benchmark.
In certain embodiments, reference ring 3 surfaces scribble anticorrosion barrier coating, form anticorrosive coat, with the anticorrosion isolation of corrosive medium.Reference ring 3 mainly plays temperature compensation function at this, in order to eliminate temperature to the influence of reference ring 3 resistance, corrosion ring 2 resistance measurement ratios.
Again as shown in Figure 2, in certain embodiments, in tested pipeline 6 outer setting first monitoring point 61 and second monitoring point 62 are arranged, first monitoring point 61 is connected with corrosion ring 2, second monitoring point 62 is connected with reference ring 3, and all adopt the mode of welding to connect, also can adopt other the mode such as being spirally connected to connect.Constant current source 1 provides constant current to supply with by first monitoring point 61 and second monitoring point 62 to corrosion ring 2 and reference ring 3.First monitoring point 61 also is connected with monitoring means 4 with second monitoring point 62, respectively in order to encircle 2 resistance signals to monitoring means 4 transmission reference ring 3 resistance signals and corrosion.
Monitoring means 4 comprises analog switch 41, amplifier module 42, low pass filter blocks 43, analog-to-digital conversion module 44, control module 45 and signal transmission unit 46.Analog switch 41 can be connected with first monitoring point 61, second monitoring point 62 respectively, to monitor corrosion ring 2 resistance signals and reference ring 3 resistance signals respectively.
When analog switch 43 and first monitoring point 61 were connected, amplifier module 42 was used for amplifying the corrosion that monitors and encircles the simulating signal of 2 resistance, and passes to low pass filter blocks 43.Low pass filter blocks 43 is used for the simulating signal of stable corrosion ring 2 resistance, is converted to digital signal by analog-to-digital conversion module 44.The digital signal transfers of corrosion ring 2 resistance is given control module 45, after 45 pairs of digital signal compilings of control module, is passed to processing unit 5 by signal transmission unit 46, obtains the resistance value R of corrosion ring 2
s
When analog switch 43 and 62 connections of second monitoring point, principle same as above, processing unit 5 can obtain the resistance value R of reference ring 3
r
Processing unit 5 comprises computing module 51 and display module 52, and computing module 51 is obtaining corrosion ring 2 resistance R s digital signals and reference ring 3 resistance R for having the monitoring station of particular analysis software
rAfter the digital signal, software program calculates the corrosion thickness data △ H that corrosion encircles 2 inwalls by following operational formula, also just can obtain the corrosion thickness of tested pipeline 6 inwalls.
Wherein, H is the wall thickness of pipeline 6.Display module 52 is used for demonstrating the data that draw at screen, is shown to human observer, in order in time the degree of corrosion is made countermeasure.
In certain embodiments, the corrosion ring 2 of inner-walls of duct corrosion real-time monitoring system can become to be set on different positions with reference ring 3, monitoring means 4, and the data of each position are transferred to processing unit 5 respectively, realize the pipeline of diverse location is monitored in real time.
Be appreciated that ground, the utility model is by adopting annular sensor as corrosion probe, and annular sensor truly contacts with the pipeline corrosion medium, the corrosion situation is identical with inner-walls of duct corrosion situation, make that monitor value is exactly real inner-walls of duct corrosion information, can reduce owing to measuring the error that causes indirectly.The utility model is owing to added reference ring 3 as object of reference, and reference ring 3 approaches with the position of corrosion ring 2, and shape and physical dimension are identical; corrosion environment is identical; owing to be protected, have neither part nor lot in corrosion, so can eliminate influence of environmental noise in the observation process to greatest extent.
Be appreciated that ground again, the utility model is not limited by corrosive medium, (using in gas phase, liquid phase, mixing phase, conduction or the non-conductive medium) such as oil, rock gases in inner-walls of duct corrosion monitoring in real time.In observation process, needn't perforate, needn't take out sample, needn't remove corrosion product, can be in process of production direct, continuous monitoring is not subjected to the restriction of pipeline corrosive medium and temperature, and the life-span of corrosion probe is greater than pipeline life, can reflect the corrosion information that inner-walls of duct is real-time, and have the advantage of highly sensitive, quick response, conduct monitoring at all levels.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1. an inner-walls of duct corrosion real-time monitoring system is characterized in that, comprises corrosion ring (2), reference ring (3), monitoring means (4) and processing unit (5);
Described corrosion ring (2) and described reference ring (3) insert tested pipeline (6) side by side and with one heart; Described corrosion ring (2) contacts with corrosive medium in the described tested pipeline (6) of flowing through, to reflect the inner wall corrosion degree of described tested pipeline (6); Described reference ring (3) and the anticorrosion isolation of described corrosive medium are with as the reference benchmark;
Described monitoring means (4) electrically connects with described corrosion ring (2) and described reference ring (3), to obtain the resistance value R of described corrosion ring (2) in real time
sResistance value R with described reference ring (3)
r, and pass to described processing unit (5);
Described processing unit (5) and described monitoring means (4) electrically connect, with according to described resistance value R
sWith described resistance value R
rCalculate the corrosion thickness △ H of described tested pipeline (6) inwall.
2. inner-walls of duct corrosion real-time monitoring system according to claim 1 it is characterized in that described corrosion ring (2) and described reference ring (3) are identical ring, and internal diameter, thickness and material is identical with described tested pipeline (6).
3. inner-walls of duct corrosion real-time monitoring system according to claim 2 is characterized in that the surface of described reference ring (3) is formed with anticorrosive coat, to realize described reference ring (3) and the anticorrosion isolation of described corrosive medium.
4. inner-walls of duct corrosion real-time monitoring system according to claim 2 is characterized in that described corrosion ring (2) and described reference ring (3) are annulus.
5. according to each described inner-walls of duct corrosion real-time monitoring system of claim 2 to 4, it is characterized in that described processing unit (5) calculates described corrosion thickness △ H according to following formula:
Wherein, R
sBe the resistance value of described corrosion ring (2), R
rBe the resistance value of described reference ring (3), H is the thickness of described tested pipeline (6).
6. inner-walls of duct according to claim 5 corrodes real-time monitoring system, it is characterized in that, this inner-walls of duct corrosion real-time monitoring system comprises constant current source (1), and described corrosion ring (2) and described reference ring (3) are series between this constant current source (1) and the ground.
7. according to each described inner-walls of duct corrosion real-time monitoring system of claim 1 to 4, it is characterized in that described monitoring means (4) comprises analog switch (41), amplifier module (42), low pass filter blocks (43), analog-to-digital conversion module (44), control module (45) and signal transmission unit (46); Described analog switch (41) is electrically connected with corrosion ring (2), reference ring (3) respectively, with the resistance signal of monitoring described corrosion ring (2) respectively and the resistance signal of described reference ring (3); Described amplifier module (42) is used for amplifying the resistance signal of the described corrosion ring (2) that monitors and the resistance signal of described reference ring (3), and passes to described low pass filter blocks (43); Described low pass filter blocks (43) is used for stablizing the resistance signal of described corrosion ring (2) and the resistance signal of described reference ring (3), is converted to digital signal by analog-to-digital conversion module (44) again, passes to control module (45); Behind corrosion ring (2) resistance signal and the compiling of reference ring (3) resistance signal of described control module (45) to reception, be passed to processing unit (5) respectively by signal transmission unit (46).
8. according to each described inner-walls of duct corrosion real-time monitoring system of claim 1 to 4, it is characterized in that this inner-walls of duct corrosion real-time monitoring system comprises display module (52), is used for showing described corrosion thickness △ H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096164 CN203148874U (en) | 2013-03-04 | 2013-03-04 | Real-time monitoring system for corrosion on inner wall of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096164 CN203148874U (en) | 2013-03-04 | 2013-03-04 | Real-time monitoring system for corrosion on inner wall of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203148874U true CN203148874U (en) | 2013-08-21 |
Family
ID=48976390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320096164 Expired - Lifetime CN203148874U (en) | 2013-03-04 | 2013-03-04 | Real-time monitoring system for corrosion on inner wall of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203148874U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706506A (en) * | 2017-01-17 | 2017-05-24 | 大连理工大学 | Monitoring device and monitoring method for corrosion of inner wall of pipeline |
| CN106838544A (en) * | 2017-03-21 | 2017-06-13 | 北京理工大学 | It is a kind of for submarine pipeline and the anti-corrosion structure and operating method of equipment |
| CN106950171A (en) * | 2017-03-24 | 2017-07-14 | 中石化节能环保工程科技有限公司 | Downhole well corrosion monitoring device |
| CN114777026A (en) * | 2022-04-19 | 2022-07-22 | 大连理工大学 | Piezoelectric impedance intelligent corrosion ring and system for monitoring pipeline corrosion |
-
2013
- 2013-03-04 CN CN 201320096164 patent/CN203148874U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706506A (en) * | 2017-01-17 | 2017-05-24 | 大连理工大学 | Monitoring device and monitoring method for corrosion of inner wall of pipeline |
| CN106706506B (en) * | 2017-01-17 | 2020-02-18 | 大连理工大学 | Pipeline inner wall corrosion monitoring device and monitoring method thereof |
| CN106838544A (en) * | 2017-03-21 | 2017-06-13 | 北京理工大学 | It is a kind of for submarine pipeline and the anti-corrosion structure and operating method of equipment |
| CN106950171A (en) * | 2017-03-24 | 2017-07-14 | 中石化节能环保工程科技有限公司 | Downhole well corrosion monitoring device |
| CN114777026A (en) * | 2022-04-19 | 2022-07-22 | 大连理工大学 | Piezoelectric impedance intelligent corrosion ring and system for monitoring pipeline corrosion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203148874U (en) | Real-time monitoring system for corrosion on inner wall of pipeline | |
| Lang et al. | A multiple leaks’ localization method in a pipeline based on change in the sound velocity | |
| CN207991706U (en) | Pipeline liquid sensor for measuring temperature | |
| CN102778631B (en) | Method for detecting and accurately positioning leakage of a sensing cable based on partial pressure compensation | |
| CN102901748A (en) | Nondestructive testing device and method based on pipeline temperature field distribution | |
| CN103033289A (en) | Integrated measuring device for multiple-point type flow velocity pressure temperature | |
| CN202177600U (en) | On-line monitoring device of dust content | |
| CN102721440A (en) | Online marine distributed temperature, salinity and depth flow dynamic real-time monitoring system | |
| CN204164672U (en) | A kind of liquid detecting ball for natural gas line supervisory system | |
| CN105387349A (en) | Liquid detection ball used for natural gas pipeline monitoring system | |
| CN204666088U (en) | Insulation thickness-measuring equipment do not torn open by a kind of petrochemical unit | |
| CN201382890Y (en) | Detection device for corrosion inside pipes | |
| CN101788521B (en) | Metal corrosion condition online test method and detecting instrument thereof | |
| Wold et al. | Integration of intrusive and non-intrusive methods for corrosion and sand/erosion monitoring | |
| CN110779860A (en) | Underground pipeline detection method | |
| CN111442194B (en) | Method for measuring pipeline leakage by using unmanned aerial vehicle carrying hygrometer | |
| Awawdeh et al. | Wireless sensing of flow-induced vibrations for pipeline integrity monitoring | |
| CN102478496A (en) | Method for accurate measurement of polarization resistance of corrosion system and special tester | |
| CN207689563U (en) | Online seawaterline stray current sensor | |
| CN201233357Y (en) | On site on-line erosion rate monitoring device | |
| CN202852430U (en) | Oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology | |
| CN202433388U (en) | On-line water quality monitoring device for ship | |
| CN204116444U (en) | A kind of oil gas pipe cathode protection parameter tester | |
| CN205102168U (en) | Monitoring devices of buggy flow | |
| CN201892749U (en) | Internal-corrosion on-line monitoring device for oil and gas pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC DEEPWATER DEVELOPMENT Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee after: CNOOC Research Institute Co-patentee after: DALIAN University OF TECHNOLOGY Address before: Chinese CNOOC Building No. 25 Beijing 100010 Dongcheng District Chaoyangmen North Street Co-patentee before: CNOOC DEEPWATER DEVELOPMENT Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: CNOOC Research Institute Co-patentee before: DALIAN University OF TECHNOLOGY |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |