CN202351203U - Miniature seawater silver halide reference electrode - Google Patents
Miniature seawater silver halide reference electrode Download PDFInfo
- Publication number
- CN202351203U CN202351203U CN2011204535233U CN201120453523U CN202351203U CN 202351203 U CN202351203 U CN 202351203U CN 2011204535233 U CN2011204535233 U CN 2011204535233U CN 201120453523 U CN201120453523 U CN 201120453523U CN 202351203 U CN202351203 U CN 202351203U
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- silver
- silver halide
- miniature
- hollow tubular
- contrast electrode
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Abstract
The utility model relates to the technical field of metal corrosion and protection, in particular to a reference electrode for potential measurement in seawater environment. The reference electrode comprises a miniature insulation material hollow pipe, a silver wire (5) with one end welded with a copper lead (1) is inserted into the middle of the hollow pipe, a welding position of the silver wire (5) and the copper lead (1) is sealed through epoxy resin (2), and a heat shrinkable tube (3) is sleeved outside the welding position. Silver and silver halide powder (7) are filled into the hollow pipe and are compacted. A ceramic membrane (9) is matched with the hollow pipe and embedded in an opening position of the front end of the hollow pipe, wrapped by cotton yarn or synthetic fiber cloth (8), and wrapped and fastened through the heat shrinkable tube. The electrode is small in size, simple in manufacture procedure and low in construction cost and achieves potential measurement of a hidden area and a stress concentration position such as seams and dead angles of metal hardware and the like in the seawater environment.
Description
Technical field
The utility model relates to the metal corrosion and protection technical field, and contrast electrode is used in particularly a kind of briny environment potential measurement.
Background technology
For a long time, silver/silver chloride electrode is considered to the ideal reference electrode in the seawater, but because the influence of bromide ion makes that silver/silver chloride electrode initial stage shows the current potential instability in the seawater.This is because silver chloride has the trend that further is converted into silver chloride-silver bromide solid solution in briny environment.In order to obtain in the seawater thermodynamic stability contrast electrode preferably, calculated the solid phase composition according to the urnormal thermodynamical model and the solid-liquid equilibrium constant, made in the briny environment highly reversible, the novel silver/silver halide contrast electrode of good stability.At present, this contrast electrode has been successfully applied in the boats and ships impressed current cathodic protection system.But this electrode complex manufacturing technology; Formality is loaded down with trivial details, and volume is bigger, has not only increased cost of manufacture; And the Potential distribution that is not suitable for the serious zone of shielding such as member turning (detection emphasis) measures, and limited the scope of application and this broad application of electrode.
Summary of the invention
The purpose of the utility model provides that a kind of making is simple, good reversibility, current potential are stable, do not receive flow rate effect, long-life miniature silver/silver halide contrast electrode, and then simplifies the production process of silver/silver halide contrast electrode, enlarges its range of application simultaneously.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of miniature seawater silver halide contrast electrode, it comprises a miniature insulating material hollow tubular, and the filamentary silver 5 that an end is welded with copper conductor 1 inserts in this hollow tubular middle part, and filamentary silver 5 seals with epoxy resin 2 with the weld of copper conductor 1, and the outside is with heat-shrink tube 3; Be filled with the silver and the silver halide powder 7 of compacting in the said hollow tubular; This hollow tubular front opening place is embedded with one section ceramic diaphragm 9 friction tight with it, coats the back with cotton yarn or synthetic fiber cloth 8 and tightens with the heat-shrink tube parcel.
Said filamentary silver 5 is linearity or spiral fashion.
Said silver and silver halide powder 7 are 160～200 orders, and the mass ratio of silver and silver halide is 6: 4; The pressure of filling said silver and silver halide powder 7 is 1kg/mm
2
Said synthetic fiber cloth 8 is soaked with silver chloride.
Said filamentary silver 5 is positioned at the hollow tubular central axis.
The front end of said filamentary silver 5 is positioned at 1/2 place of said hollow tubular.
The beneficial effect of the utility model is: the diameter (I to millimeter level) that can actually as required choose the insulating material cavity; Conveniently be applied to the hidden regional potential measurement of hardware in the briny environment, simple in structure, cost is low, easy to use, of many uses.
Description of drawings
Fig. 1 is the vertical section structure figure of the miniature seawater silver halide contrast electrode of the utility model.
[primary clustering symbol description]
1 copper conductor
2 epoxy resin
3 heat-shrink tubes
4 filamentary silvers and wire bonds point
5 filamentary silvers
6 plastic chambers
7 Ag+AgX powder
8 synthetic fiber cloths
9 ceramic diaphragms
Embodiment
Be described further according to the embodiment of accompanying drawing below the utility model.
As shown in Figure 1, be the vertical section structure figure of the miniature seawater silver halide contrast electrode of the utility model, this electrode material calculates solid phase according to the urnormal thermodynamical model and the solid-liquid equilibrium constant and forms.
Said miniature seawater silver halide contrast electrode comprises plastic chamber 6 (miniature insulating material hollow tubular), and the I of its internal diameter is to 2mm; The filamentary silver 5 that one end is welded with copper conductor 1 inserts in these plastic chambers 6, and filamentary silver 5 can be stretching or be bent to spiral fashion (increasing the contact area with powder); The front end of filamentary silver 5 is advisable with 1/2 place that is positioned at cavity length; Filamentary silver 5 is filamentary silver and wire bonds point 4 with the weld of copper conductor 1, and this place seals with epoxy resin 2, puts heat-shrink tube 3 again and carries out secondary seal, realizes the electrical isolation of itself and silver-colored (Ag) and silver halide (AgX) powder; Adopt necessary supplementary means to guarantee that filamentary silver 5 is positioned at the central shaft position of plastic chamber 6, synthetic good AgX powder and Ag powder are mixed by a certain percentage, fill up compacting behind the cavity, pressure is about 1kg/mm
2Wherein Ag+AgX powder 7 is 160～200 orders, and the mass ratio of Ag and AgX is 6: 4; These plastic chamber 6 front opening places embed one section and plastic chamber 6 friction tight ceramic diaphragms 9; Filling material and seawater are separated; Realize seawater and the conducting of electrode powder storeroom ion through barrier film, coat the back with cotton yarn or synthetic fiber cloth 8 and tighten with the heat-shrink tube parcel; If need be immersed in the stained of real marine considered marine growth for a long time, can the front end wrapping be soaked with the synthetic fiber cloth 8 of silver chloride.
Claims (6)
1. miniature seawater silver halide contrast electrode; It is characterized in that: it comprises a miniature insulating material hollow tubular; The filamentary silver (5) that one end is welded with copper conductor (1) inserts in this hollow tubular middle part, and filamentary silver (5) seals with epoxy resin (2) with the weld of copper conductor (1), and the outside is with heat-shrink tube (3); Be filled with the silver and the silver halide powder (7) of compacting in the said hollow tubular; This hollow tubular front opening place is embedded with one section ceramic diaphragm friction tight with it (9), coats the back with cotton yarn or synthetic fiber cloth (8) and tightens with the heat-shrink tube parcel.
2. miniature seawater silver halide contrast electrode as claimed in claim 1 is characterized in that: filamentary silver (5) is linearity or spiral fashion.
3. miniature seawater silver halide contrast electrode as claimed in claim 1 is characterized in that: said silver and silver halide powder (7) are 160～200 orders, and the mass ratio of silver and silver halide is 6: 4; The pressure of filling said silver and silver halide powder (7) is 1kg/mm
2
4. miniature seawater silver halide contrast electrode as claimed in claim 1, it is characterized in that: synthetic fiber cloth (8) is soaked with silver chloride.
5. miniature seawater silver halide contrast electrode as claimed in claim 1, it is characterized in that: filamentary silver (5) is positioned at the hollow tubular central axis.
6. miniature seawater silver halide contrast electrode as claimed in claim 1 is characterized in that: the front end of filamentary silver (5) is positioned at 1/2 place of said hollow tubular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204535233U CN202351203U (en) | 2011-11-16 | 2011-11-16 | Miniature seawater silver halide reference electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204535233U CN202351203U (en) | 2011-11-16 | 2011-11-16 | Miniature seawater silver halide reference electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202351203U true CN202351203U (en) | 2012-07-25 |
Family
ID=46540199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204535233U Expired - Lifetime CN202351203U (en) | 2011-11-16 | 2011-11-16 | Miniature seawater silver halide reference electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202351203U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076365A (en) * | 2013-01-08 | 2013-05-01 | 苏州热工研究院有限公司 | Pen-type potential-chloride ion sensor |
| CN107238641A (en) * | 2016-03-28 | 2017-10-10 | 梅特勒-托利多仪器（上海）有限公司 | A kind of reference electrode system |
| CN110186968A (en) * | 2019-05-22 | 2019-08-30 | 哈尔滨工程大学 | Ag/AgF reference electrode and preparation method thereof suitable for fluoride molten salt |
-
2011
- 2011-11-16 CN CN2011204535233U patent/CN202351203U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076365A (en) * | 2013-01-08 | 2013-05-01 | 苏州热工研究院有限公司 | Pen-type potential-chloride ion sensor |
| CN107238641A (en) * | 2016-03-28 | 2017-10-10 | 梅特勒-托利多仪器（上海）有限公司 | A kind of reference electrode system |
| CN110186968A (en) * | 2019-05-22 | 2019-08-30 | 哈尔滨工程大学 | Ag/AgF reference electrode and preparation method thereof suitable for fluoride molten salt |
| CN110186968B (en) * | 2019-05-22 | 2022-01-14 | 哈尔滨工程大学 | Ag/AgF reference electrode suitable for fluoride fused salt and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |