CN104122307B - Multichannel potential measuring instrument - Google Patents
Multichannel potential measuring instrument Download PDFInfo
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- CN104122307B CN104122307B CN201310152301.1A CN201310152301A CN104122307B CN 104122307 B CN104122307 B CN 104122307B CN 201310152301 A CN201310152301 A CN 201310152301A CN 104122307 B CN104122307 B CN 104122307B
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- potential
- processor
- measuring instrument
- acquisition device
- measurement
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Abstract
The invention relates to the field of metal corrosion measuring equipment, and concretely relates to a multichannel potential measuring instrument mainly used to measure two-dimension distribution of cathode protective potential under a peeling coating layer. The measuring instrument is connected with a to-be tested system via an electrode, and comprises a processor, a potential gatherer and a control button; the potential gatherer is connected with the processor via a data line; the processor gives commands and instructions to the potential gatherer and receives potential signals transmitted by the potential gatherer; and the control button are connected with the input terminus of the processor, and is used to control the working state of the potential gatherer. The multichannel potential measuring instrument is capable of performing measure and real-time monitoring on two-dimension distribution of cathode protective potential of a metal in a gap at different gas depth. The multichannel potential measuring instrument has the advantages of small volume, simple structure, convenient operation and high detection precision.
Description
Technical field
The present invention relates to metal erosion measuring apparatus field, is specifically multichannel potential measuring instrument, is mainly used in stripping
The cathodic protection potential Two dimensional Distribution measurement under coating.
Background technology
Generally buried pipeline anticorrosion coating is not perfect to the buffer action of corrosive medium.Due to coating material itself
Defect（Pin hole, leak source etc.）And in pipeline transportation, handling and work progress, mechanical damage, pipeline all can be caused to coating
Soil environment effect around after buried（Such as：The factors such as soil stress, cathode hydrogen evolution）, damage from third-party etc. all can cause to apply break
Sunken formation and extension.The above results can all cause corrosion-inhibiting coating to lose cohesive force and peeling-off, in pipe surface and coating
Between form gap, once the Korrosionsmedium in environment（Such as subsoil water, oxygen, carbon dioxide, sulfate ion, chloride ion
And microorganism etc.）Penetrate in gap, local corrosion microenvironment will be formed, can result in gap interior conduit under release coating and occur
Corrosion.
In prior art usually through circuit tester etc. but channel measurement instrument in gap under release coating metal cathodic protection electricity
Bit distribution measures to obtain the data of microenvironment in gap.But it is inefficient usually because measurement point is excessive.Meanwhile, by
There is time of measuring interval between each measurement point, this causes the non-concurrent of each measure dot number evidence, and these all bring to measurement
Difficulty and error.
The content of the invention
For above-mentioned weak point present in prior art, the problem to be solved in the present invention is that offer one kind can be simultaneously
Measure cathodic protection potential Two dimensional Distribution multichannel potential measuring instrument under the release coating of multigroup potential data.
The present invention is adopted the following technical scheme that：A kind of multichannel potential measuring instrument, the measuring instrument by electrode with it is tested
Test system is connected, including processor, potential acquisition device and control button, and data wire is passed through between potential acquisition device and processor
Connection, processor sends the electric potential signal for instructing and receiving the transmission of potential acquisition device to potential acquisition device；Control button and process
The input connection of device, by the working condition of control button controlling potential harvester.
The potential acquisition utensil has multigroup measurement port, and every group of measurement port is equipped with one group of measurement plug, measures plug
It is connected with the working electrode and reference electrode of tested test system, for the measurement of current potential.
The processor is connected with memorizer, potential acquisition device by measured data storage in memory.
The processor is connected by data transmission port with computer, and can be by data transfer in memorizer to computer
In.
Measurement port is 64.
The present invention has the advantage that and beneficial effect：
1. solve the problems, such as cannot be while measure multigroup potential data for the present invention, can in test under release coating
Multiple spot current potential is gathered and the data obtained is carried out into storage mapping by electronic computer simultaneously；
2. the present invention can carry out the Two dimensional Distribution of cathodic protection potential under different gap depths to gap Endothelium corneum category is carried out
Measurement and real-time monitoring.With small volume, simple structure is easy to operate, the high advantage of accuracy of detection.
Description of the drawings
Fig. 1 is the structured flowchart of the control device of the present invention.
Specific embodiment
Present configuration is described in detail below in conjunction with the accompanying drawings.
Embodiment
As shown in figure 1, cathodic protection potential Two dimensional Distribution multichannel potential measuring instrument under a kind of release coating of the present embodiment,
The measuring instrument is connected by electrode with tested test system, including processor, potential acquisition device and control button, by being input into phase
The numeral answered is for selecting the working condition of correspondence potential acquisition device.Connected by data wire between potential acquisition device and processor
Connect, processor sends the electric potential signal for instructing and receiving the transmission of potential acquisition device to potential acquisition device；Control button and processor
Input connection；Processor is also associated with display screen, and the voltage signal gathered by potential acquisition device passes to processor, and
Specific numerical value is shown by display screen.
In the present embodiment, by potential acquisition device include multigroup measurement port, according to sequence number numbering be the measurement port of passage 1,
The measurement port of passage 2, until passage N measurement port, N is 64 in the present embodiment.
In the present invention, each passage of potential acquisition device when in use can be while and working electrode with one group of measurement plug
Connect with reference electrode, for potential measurement.Potential acquisition device can simultaneously measure multigroup potential data.And will be measured multigroup
Potential data is stored in memory.
The present invention when in use, by the working electrode plug and reference electrode plug of potential acquisition device each passage respectively with
Working electrode and reference electrode connect in institute's joint measurement gap device, are input into corresponding port number by control button, you can measure
Current potential corresponding to the passage, the measurement of the final multigroup electrochemical parameter for realizing belonging to gap Endothelium corneum on sample.
Claims (2)
1. a kind of application of multichannel potential measuring instrument, it is characterised in that the measuring instrument is connected by electrode with tested test system,
Including processor, potential acquisition device and control button, connected by data wire between potential acquisition device and processor, processor
The electric potential signal for instructing and receiving the transmission of potential acquisition device is sent to potential acquisition device；Control button connects with the input of processor
Connect, by the working condition of control button controlling potential harvester, survey for cathodic protection potential Two dimensional Distribution under release coating
Amount；
The potential acquisition utensil has multigroup measurement port, and every group of measurement port is equipped with one group of measurement plug, measurement plug and quilt
The working electrode of test system and reference electrode connect, for the measurement of current potential；
The processor is connected with memorizer, potential acquisition device by measured data storage in memory；
The processor is connected by data transmission port with computer, and can be by data transfer in memorizer to computer.
2. according to the application of the multichannel potential measuring instrument described in claim 1, it is characterised in that measurement port is 64.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152301.1A CN104122307B (en) | 2013-04-27 | 2013-04-27 | Multichannel potential measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152301.1A CN104122307B (en) | 2013-04-27 | 2013-04-27 | Multichannel potential measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104122307A CN104122307A (en) | 2014-10-29 |
| CN104122307B true CN104122307B (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310152301.1A Expired - Fee Related CN104122307B (en) | 2013-04-27 | 2013-04-27 | Multichannel potential measuring instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN104122307B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319248B (en) * | 2015-02-25 | 2017-10-27 | 天津大学 | A kind of electrochemistry the cannot-harm-detection device and method for detecting cracks of metal surface |
| CN113281387A (en) * | 2021-04-23 | 2021-08-20 | 国家管网集团东部原油储运有限公司 | Polarization potential measuring equipment for directional drilling pipeline and use method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046042A (en) * | 1989-04-01 | 1990-10-10 | 北京科技大学 | Electric chemistry by use of concentration-beam microelectrode corrosion principle measuring method and device |
| CN1119739A (en) * | 1995-07-04 | 1996-04-03 | 厦门大学 | Metal/polymer composite material interface electric potential distribution measuring device |
| CN101430271A (en) * | 2007-11-07 | 2009-05-13 | 中国科学院海洋研究所 | Apparatus and method for monitoring metal corrosion under organic coating |
| CN101614690A (en) * | 2009-07-27 | 2009-12-30 | 中国科学院长春应用化学研究所 | A kind of multi-channel electrochemical analyzer |
| JP4601155B2 (en) * | 2000-12-08 | 2010-12-22 | Ｊｆｅエンジニアリング株式会社 | Anticorrosion monitoring method |
| CN102955176A (en) * | 2012-10-15 | 2013-03-06 | 上海应用技术学院 | Distributed electric potential gradient parallel observation electrode |
| CN203203959U (en) * | 2013-04-27 | 2013-09-18 | 中国科学院金属研究所 | Multi-channel potential measurement instrument |
-
2013
- 2013-04-27 CN CN201310152301.1A patent/CN104122307B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046042A (en) * | 1989-04-01 | 1990-10-10 | 北京科技大学 | Electric chemistry by use of concentration-beam microelectrode corrosion principle measuring method and device |
| CN1119739A (en) * | 1995-07-04 | 1996-04-03 | 厦门大学 | Metal/polymer composite material interface electric potential distribution measuring device |
| JP4601155B2 (en) * | 2000-12-08 | 2010-12-22 | Ｊｆｅエンジニアリング株式会社 | Anticorrosion monitoring method |
| CN101430271A (en) * | 2007-11-07 | 2009-05-13 | 中国科学院海洋研究所 | Apparatus and method for monitoring metal corrosion under organic coating |
| CN101614690A (en) * | 2009-07-27 | 2009-12-30 | 中国科学院长春应用化学研究所 | A kind of multi-channel electrochemical analyzer |
| CN102955176A (en) * | 2012-10-15 | 2013-03-06 | 上海应用技术学院 | Distributed electric potential gradient parallel observation electrode |
| CN203203959U (en) * | 2013-04-27 | 2013-09-18 | 中国科学院金属研究所 | Multi-channel potential measurement instrument |
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| Publication number | Publication date |
|---|---|
| CN104122307A (en) | 2014-10-29 |
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