CN203772706U - Potential type electrochemical sensor for monitoring corrosion of water conveying pipeline - Google Patents
Potential type electrochemical sensor for monitoring corrosion of water conveying pipeline Download PDFInfo
- Publication number
- CN203772706U CN203772706U CN201420147292.7U CN201420147292U CN203772706U CN 203772706 U CN203772706 U CN 203772706U CN 201420147292 U CN201420147292 U CN 201420147292U CN 203772706 U CN203772706 U CN 203772706U
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- China
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- electrode
- electrochemical sensor
- reference electrode
- agcl
- aqueduct
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Abstract
The utility model discloses a potential type electrochemical sensor for monitoring corrosion of a water conveying pipeline. The potential type electrochemical sensor comprises a working electrode, an Ag/AgCl reference electrode, a platinum wire electrode, a shell and water absorbing sponge, wherein the Ag/AgCl reference electrode and the platinum wire electrode are soaked in an electrolyte; the electrolyte connects the working electrode, the Ag/AgCl reference electrode and the platinum wire electrode through the water absorbing sponge; the platinum wire electrode is in series connection with a capacitor and is in parallel connection with the Ag/AgCl reference electrode, so as to form a double-reference electrode; a reference electrode shielded lead which is used for being connected with the Ag/AgCl reference electrode and the platinum wire electrode and transmitting electrical signals is arranged at the upper end of the Ag/AgCl reference electrode and the upper end of the platinum wire electrode in a fixed welding manner; the working electrode is arranged at the internal bottommost part of the shell. The potential type electrochemical sensor has the beneficial effects that the double-reference electrode is formed through connecting the platinum wire electrode and the Ag/AgCl reference electrode in parallel, so that high-frequency drift during data acquisition is effectively avoided; the structure is simple, the cost is low, and the measurement accuracy is high.
Description
Technical field
The utility model relates to a kind of electrochemical sensor, and more specifically, it relates to a kind of aqueduct corrosion monitoring electric potential type electrochemical sensor.
Background technology
Metal material is subject to the effect of chemical factor, physical factor and biodyne and destroys in different Korrosionsmediums, and its Corrosion results makes material attenuation, and local perforations or fracture occur strength decreased sometimes, even make structural failure.Therefore, no matter be to consider from social benefit or economic benefit, people urgently wish that destruction and loss that corrosion is caused are reduced to bottom line, and equipment equipment, hardware etc. can long-term safety be turned round.Corrosion monitoring technology has obtained good application at industrial circle at present, as fields such as cooling water system, gas attack, petrochemical complex, space flight and aviation.Because corrosion itself is the process of an electrochemical reaction, therefore, in numerous corrosion monitoring systems, great majority are based on electrochemical monitoring technology.Along with the development of monitoring technology, electrochemical sensor application is in this regard more and more extensive.Yet, during traditional electric potential type electrochemical sensor practical application, being all prone to the phenomenon of high frequency drift, this can obviously observe from the test result of electrochemical impedance spectroscopy, and operative sensor is soaked in aqueduct and easily corrodes in liquid medium.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of rational in infrastructure, effectively avoids the aqueduct corrosion monitoring electric potential type electrochemical sensor of high frequency drift.
The purpose of this utility model is achieved through the following technical solutions.This aqueduct corrosion monitoring electrochemical sensor, comprises working electrode, Ag/AgCl contrast electrode, platinum electrode, shell and water-absorbing sponge; Described shell is that lower end has the barrel-shaped of opening, and described water-absorbing sponge is located in shell; Described water-absorbing sponge absorption electrolytic solution, described electrolytic solution is the aqueous medium in aqueduct; Described Ag/AgCl contrast electrode and platinum electrode are soaked in electrolytic solution; Described electrolytic solution is connected working electrode and Ag/AgCl contrast electrode and platinum electrode by water-absorbing sponge; In described platinum electrode, be in series with electric capacity and the Ag/AgCl contrast electrode pair contrast electrodes that form in parallel; Described Ag/AgCl contrast electrode is provided with for being connected the contrast electrode shielded lead of Ag/AgCl contrast electrode and platinum electrode transmission of electric signals with the fixing welding in platinum electrode upper end; Described working electrode is arranged at bottommost in shell.
As preferably: the electric capacity of connecting in described platinum electrode is 0.05 μ F～20 μ F.
As preferably: described contrast electrode shielded lead stretches into part in sensor outer housing and comprises with the tie point of Ag/AgCl contrast electrode and platinum electrode and adopt the complete environmental sealing of teflon.
As preferably: the fixing welding in described contrast electrode shielded lead outer end is provided with a reference electrode connector.
As preferably: described shell is polytetrafluoroethylmaterial material.
The beneficial effects of the utility model are:
1. integral body is prepared from by polytetrafluoroethylmaterial material, can long period of soaking in aqueduct;
2. with platinum electrode make pair contrast electrodes in parallel with Ag/AgCl contrast electrode, the high frequency drift while effectively avoiding data acquisition;
3. working electrode wiring can connect a plurality of parts of aqueduct simultaneously;
4. by water-absorbing sponge, connect two contrast electrodes and working electrode;
5. simple in structure, with low cost, measuring accuracy is high.
Accompanying drawing explanation
Fig. 1: the utility model cross-sectional view;
Description of reference numerals: working electrode 1, Ag/AgCl contrast electrode 2, platinum electrode 3, shell 4, electrolytic solution 5, water-absorbing sponge 6, contrast electrode shielded lead 7, reference electrode connector 8.
Embodiment
Below in conjunction with embodiment, the utility model is described further.Although the utility model is described in connection with preferred embodiment, should know, do not represent that the utility model is limited in described embodiment.On the contrary, the utility model is by alternative, modified and the equivalent contained in the scope of the present utility model that can be included in attached claims restriction.
The present embodiment realize principle: the electric capacity of the 0.1 μ F that first connects in platinum electrode 3, then by the make pair contrast electrodes in parallel with Ag/AgCl contrast electrode 2 of the platinum electrode 3 after series connection.The capacitor adding effectively filters high-frequency signal, makes it not connect with Ag/AgCl contrast electrode 2 the high frequency drift while effectively avoiding signals collecting.By water-absorbing sponge 6, from shell 4 lower ending openings, adsorb the electrolytic solution 5 in tested aqueous medium.
The aqueduct corrosion monitoring electric potential type electrochemical sensor of the present embodiment, comprise by polytetrafluoroethylmaterial material, prepared for holding the barrel-shaped sensor outer housing 4 of the water-absorbing sponge 6 of electrolytic solution 5, the two contrast electrodes that are soaked in electrolytic solution 5 are Ag/AgCl contrast electrode 2 and platinum electrode 3, electrolytic solution 5 is connected working electrode 1 and two contrast electrode by water-absorbing sponge 6, and electrolytic solution 5 is the aqueous medium in aqueduct.Two contrast electrodes lower end is immersed in the water-absorbing sponge 6 of Electolyte-absorptive 5, the fixing welding in upper end is provided with for connecting the shielded lead 7 of two contrast electrode transmission of electric signals, adopt teflon that contrast electrode shielded lead 7 is stretched into part in sensor outer housing 4 and comprise the complete environmental sealing of tie point with two contrast electrodes, guarantee tie point not with electrolytic solution 5 contact reactions.The fixing welding in contrast electrode shielded lead 7 outer ends is provided with a reference electrode connector 8, and for connecting, monitoring instrument is collected and storage data.
Claims (5)
1. an aqueduct corrosion monitoring electrochemical sensor, is characterized in that:
Comprise working electrode (1), Ag/AgCl contrast electrode (2), platinum electrode (3), shell (4) and water-absorbing sponge (6);
Described shell (4) has the barrel-shaped of opening for lower end, and described water-absorbing sponge (6) is located in shell (4);
Described water-absorbing sponge (6) absorption electrolytic solution (5), described electrolytic solution (5) is the aqueous medium in aqueduct;
Described Ag/AgCl contrast electrode (2) and platinum electrode (3) are soaked in electrolytic solution (5);
Described electrolytic solution (5) is connected working electrode (1) and Ag/AgCl contrast electrode (2) and platinum electrode (3) by water-absorbing sponge (6);
In described platinum electrode (3), be in series with electric capacity and Ag/AgCl contrast electrode (2) pair contrast electrodes that form in parallel;
Described Ag/AgCl contrast electrode (2) is provided with for being connected the contrast electrode shielded lead (7) of Ag/AgCl contrast electrode (2) and platinum electrode (3) transmission of electric signals with the fixing welding in platinum electrode (3) upper end;
Described working electrode (1) is arranged at the interior bottommost of shell (4).
2. aqueduct corrosion monitoring electrochemical sensor according to claim 1, is characterized in that: the electric capacity of the upper series connection of described platinum electrode (3) is 0.05 μ F～20 μ F.
3. aqueduct corrosion monitoring electrochemical sensor according to claim 1, is characterized in that: described contrast electrode shielded lead (7) stretches into part in sensor outer housing and comprises with the tie point of Ag/AgCl contrast electrode (2) and platinum electrode (3) and adopt the complete environmental sealing of teflon.
4. according to the aqueduct corrosion monitoring electrochemical sensor described in claim 1 or 3, it is characterized in that: the fixing welding in described contrast electrode shielded lead (7) outer end is provided with a reference electrode connector (8).
5. aqueduct corrosion monitoring electrochemical sensor according to claim 1, is characterized in that: described shell (4) is polytetrafluoroethylmaterial material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147292.7U CN203772706U (en) | 2014-03-28 | 2014-03-28 | Potential type electrochemical sensor for monitoring corrosion of water conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147292.7U CN203772706U (en) | 2014-03-28 | 2014-03-28 | Potential type electrochemical sensor for monitoring corrosion of water conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772706U true CN203772706U (en) | 2014-08-13 |
Family
ID=51289884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420147292.7U Expired - Fee Related CN203772706U (en) | 2014-03-28 | 2014-03-28 | Potential type electrochemical sensor for monitoring corrosion of water conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203772706U (en) |
-
2014
- 2014-03-28 CN CN201420147292.7U patent/CN203772706U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20180328 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |