CN204086207U - High-temperature molten salt electrochemical test system - Google Patents
High-temperature molten salt electrochemical test system Download PDFInfo
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- CN204086207U CN204086207U CN201420574380.5U CN201420574380U CN204086207U CN 204086207 U CN204086207 U CN 204086207U CN 201420574380 U CN201420574380 U CN 201420574380U CN 204086207 U CN204086207 U CN 204086207U
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Abstract
The utility model discloses the high-temperature molten salt electrochemical test system that one is applicable to 750 ~ 900 DEG C of scopes, comprise high-temperature electric resistance furnace, high-temperature electrochemistry electrode and high-temperature molten salt crucible three part.High-temperature molten salt contrast electrode (2) is primarily of the first electrode stem (24) and sleeve pipe composition; First electrode stem (24) is encapsulated in the first alumina sleeve (25) sealed with cement (27); High-temperature molten salt working electrode (3) is primarily of the second electrode stem and sleeve pipe composition; Second electrode stem (31) main body is encapsulated in the second alumina sleeve (32) containing sealing cement (33), to ensure the effect of heat insulation and uniform heat distribution under the high temperature conditions; Crucible (6) top place with center pit (65), the crucible cover (64) be made up of pottery; The volatilization that crucible cover (64) can effectively prevent electrolyte high-temperature melting from causing, thus avoid electric furnace body to corrode from the volatilization of fused electrolyte.
Description
Technical field
The utility model relates to a kind of test macro of high-temperature electrochemistry experimental study, particularly relate to can be able to carry out in high-temperature molten salt system electrochemistry experiment, suitable environment condition is at the test macro of 750 ~ 900 DEG C of scopes.
Background technology
High-temperature molten salt electrochemical test system is formed primarily of high-temperature electric resistance furnace, high-temperature electrochemistry electrode and high-temperature molten salt crucible; High-temperature electric resistance furnace provides heat to produce hot environment, and high-temperature electrochemistry electrode is for connecting electrochemical workstation and high-temperature molten salt system, and high-temperature molten salt crucible provides the place to place of high-temperature molten salt and electrochemical electrode.
At present, rear two parts technical matters of high-temperature molten salt electrochemical test system is a lot, very large on the impact of test.In high-temperature molten salt electrochemical test process, the most critical issue is exactly the Stability and dependability problem of test macro.General existence three problems: the medium in (1) high temp. reference electrode easily pollutes mutually with corrosive medium, causes the reference potential of contrast electrode drift about, thus cause the current return instability of monitoring in Electrochemical Test Procedure, the problem fluctuated; (2) hot operation electrode test piece with wiry be connected easily rupture or local insecure, and in use often occur connect tinsel pollute and damage situation; (3) high-temperature molten salt electro-chemical test container causes the damage of equipment at the medium pollution that hot conditions is easily volatilized.These all can cause the working electrode parameter recorded in process of the test to bring obvious error into, have a strong impact on the reliability of test data in high-temperature molten salt electrochemical test, cannot carry out the analysis and inspection of science to research system.
Summary of the invention
Technical problem to be solved in the utility model, is just to provide a kind of high-temperature molten salt electrochemical test system that is reliable and stable, that be applicable to 750 ~ 900 DEG C of scopes, realizes the steady testing in high-temperature molten salt electrochemical test process and analysis.
Solve the problems of the technologies described above, the technical solution adopted in the utility model is as follows: one is applicable to the high-temperature molten salt electrochemical test system of 750 ~ 900 DEG C of scopes, comprises high-temperature electric resistance furnace, high-temperature electrochemistry electrode and high-temperature molten salt crucible three part.It is characterized in that: the electrode stem of high-temperature molten salt contrast electrode is made up of filamentary silver, the overwhelming majority of filamentary silver is encapsulated in alumina ceramic tube, realizes sealing with the filamentary silver contact preventing high-temperature chlorine salt steam from catching up with portion bottom it close to filamentary silver end position by cement; Avoiding problems the problem of contrast electrode current potential instability in test process.The filamentary silver stretching out sealing cement contacts with the electrolyte of external ceramic sleeve bottom, and electrolyte is made up of by a certain percentage silver chloride, potassium chloride and sodium chloride; Under high-temperature molten salt environment, the ion in fused-salt medium carries out ion-exchange by external ceramic sleeve pipe and electrolyte, and the change that exchange process produces can pass out corresponding signal by filamentary silver, thus realizes reliable potential test.
The electrode stem of high-temperature molten salt working electrode is made up of nickel filament, described nickel filament is set with alumina sleeve, and envelope is filled out by cement in the gap between described alumina sleeve inside and described nickel filament, the bottom of described alumina sleeve has fraction nickel filament to stretch out and is fixed with connection rivet at nickel filament bottommost, for the top aperture through working electrode test piece, thus realize electrode test piece to be connected with electrode stem.
High-temperature molten salt crucible is made up of crucible body and crucible cover.Crucible body inside can hold molten salt electrolyte, when carrying out high-temperature molten salt electro-chemical test, crucible top to place center with holes, the crucible cover be made up of pottery; Center pit has three, is respectively used to place working electrode, auxiliary electrode and contrast electrode.The volatilization that crucible cover can effectively prevent electrolyte high-temperature melting from causing, thus avoid electric furnace body from the erosion of aggressive electrolyte.
Adopt the high-temperature molten salt electrochemical test system of technique scheme, solve the problem that high-temperature molten salt contrast electrode is unstable, fluctuate, and the connection of hot operation electrode is easily ruptured or local is insecure, high temperature fused salt electrolysis matter pollutes the problem causing device damage.Due to high-temperature electrochemistry contrast electrode cement seal, the alumina sleeve of encapsulation filamentary silver, makes contrast electrode electrode stem good heat-insulation effect, heat in high-temperature molten salt process of the test be more evenly distributed, thus guarantees more stable operation; High-temperature molten salt working electrode fixes test piece by arranging refractory metal rivet bottom nickel filament, makes the connection between working electrode test piece and connecting filament more firm; The design of crucible cover with holes effectively controls the damage of electrolyte high-temperature volatilization to body of heater material.The present invention, except the high-temperature molten salt electrochemical test being applicable to 750 ~ 900 DEG C of scopes, also may be used for other occasion needing high-temperature electrochemistry to test.
In sum, the utility model provides a kind of stable, reliably realizes the high-temperature molten salt electrochemical test system of 750 ~ 900 DEG C of temperature ranges tests, this high-temperature molten salt electrochemical test system stable performance, practical.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is system of the present utility model composition and annexation schematic diagram;
Fig. 2 is high temp. reference electrode schematic diagram of the present utility model;
Fig. 3 is hot operation electrode schematic diagram of the present utility model;
Fig. 4 is high-temperature molten salt crucible schematic diagram of the present utility model.
Embodiment
See accompanying drawing 1 ~ accompanying drawing 4, high-temperature molten salt electrochemical test system comprises high-temperature electric resistance furnace, high-temperature electrochemistry electrode and high-temperature molten salt crucible three part; Auxiliary electrode 1, contrast electrode 2 and working electrode 3 are placed in the crucible 6 of burner hearth as three-electrode system through high-temperature electric resistance furnace bell 4; Resistive heater 5 is for heating hearth region, and intelligent temperature control system 9 controls for realizing reliably temperature to burner hearth; Crucible 6 is placed on alumina crucible loading plate 7; For maintaining burner hearth internal high temperature, the side arrangement of high-temperature electric resistance furnace has insulation material 8.
High-temperature molten salt contrast electrode 2 is primarily of the first electrode stem 24 and sleeve pipe composition; First electrode stem 24 is made up of filamentary silver, and main body is encapsulated in the first alumina sleeve 25, and the top of the first alumina sleeve 25 is fixed on flange 22, and flange 22 can screw with rivet 23 and fix; The top of flange 22 can be set with one and can screw lid 21 to realize fixed effect; Seal with cement 27 bottom first alumina sleeve 25, it is inner that segment first electrode stem 24 stretched out bottom the first alumina sleeve 25 is inserted in electrolyte 28; Electrolyte 28 and the first alumina sleeve 25 are all encapsulated in the high alumina ceramic pipe 26 used as salt bridge, thus form complete high temp. reference electrode.
High-temperature molten salt working electrode 3 is primarily of the second electrode stem and sleeve pipe composition; Second electrode stem 31 is made up of nickel filament, and main body is encapsulated in the second alumina sleeve 32, and the space between the second alumina sleeve 32 and the second electrode stem 31 is filled with and seals cement 33, to ensure heat insulation and stablizing effect under the high temperature conditions; The bottom of the second electrode stem 31 is connected with rivet 34, and rivet 34 can well steady job test piece 35; Sealing cement 33 can effectively heat insulation and prevent the second alumina sleeve 32 be heated inequality and cause explosion, prevent aggressivity salt steam in high-temperature molten salt process of the test from contacting with the second electrode stem 31 simultaneously; Sealing cement 33 and rivet 34 connect the stable operation that can ensure working electrode under hot conditions.
High-temperature molten salt crucible forms primarily of crucible 6 and crucible cover 64; Crucible 6 inside can hold molten salt electrolyte 61, when carrying out high-temperature molten salt electro-chemical test, crucible 6 top to place with center pit 65, the crucible cover 64 be made up of pottery; Center pit 65 has three, is respectively used to place auxiliary electrode 1, contrast electrode 2 and working electrode 3; The volatilization that crucible cover 64 can effectively prevent electrolyte high-temperature melting from causing, thus avoid electric furnace body to corrode from the volatilization of fused electrolyte.
Claims (4)
1. a high-temperature molten salt electrochemical test system, is characterized in that: this system is applicable to the temperature range of 750 ~ 900 DEG C, and is made up of high-temperature electric resistance furnace, high-temperature electrochemistry electrode and high-temperature molten salt crucible three part; Auxiliary electrode (1), contrast electrode (2) and working electrode (3) are placed in the crucible (6) of burner hearth as three-electrode system through high-temperature electric resistance furnace bell (4); Resistive heater (5) is for heating hearth region, and intelligent temperature control system (9) controls for realizing reliably temperature to burner hearth; Crucible (6) is placed on alumina crucible loading plate (7); For maintaining burner hearth internal high temperature, the side arrangement of high-temperature electric resistance furnace has insulation material (8).
2. a kind of high-temperature molten salt electrochemical test system according to claim 1, wherein said high-temperature molten salt contrast electrode (2) is primarily of the first electrode stem (24) and sleeve pipe composition; First electrode stem (24) is made up of filamentary silver, and main body is encapsulated in the first alumina sleeve (25), and the top of the first alumina sleeve (25) is fixed on flange (22), and flange (22) can screw with rivet (23) and fix; The top of flange (22) can be set with one and can screw lid (21) to realize fixed effect; Cement (27) sealing of first alumina sleeve (25) bottom, segment first electrode stem (24) stretching out the first alumina sleeve (25) bottom is inserted in electrolyte (28) inside; Electrolyte (28) and the first alumina sleeve (25) are all encapsulated in the high alumina ceramic pipe (26) used as salt bridge, thus form complete high temp. reference electrode.
3. a kind of high-temperature molten salt electrochemical test system according to claim 1, wherein said high-temperature molten salt working electrode (3) is primarily of the second electrode stem and sleeve pipe composition; Second electrode stem (31) is made up of nickel filament, and main body is encapsulated in the second alumina sleeve (32), space between second alumina sleeve (32) and the second electrode stem (31) is filled with and seals cement (33), to ensure heat insulation and stablizing effect under the high temperature conditions; The bottom of the second electrode stem (31) is connected with rivet (34), and rivet (34) can well steady job test piece (35); Sealing cement (33) can effectively heat insulation and prevent the second alumina sleeve (32) be heated inequality and cause explosion, prevent aggressivity salt steam in high-temperature molten salt process of the test from contacting with the second electrode stem (31) simultaneously; Sealing cement (33) and rivet (34) connect the stable operation that can ensure working electrode under hot conditions.
4. a kind of high-temperature molten salt electrochemical test system according to claim 1, wherein said high-temperature molten salt crucible is primarily of crucible (6) and crucible cover (64) composition; Crucible (6) inside can hold molten salt electrolyte (61), when carrying out high-temperature molten salt electro-chemical test, crucible (6) top to place with center pit (65), the crucible cover (64) be made up of pottery; Center pit (65) has three, is respectively used to place auxiliary electrode (1), contrast electrode (2) and working electrode (3); The volatilization that crucible cover (64) can effectively prevent electrolyte high-temperature melting from causing, thus avoid electric furnace body to corrode from the volatilization of fused electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574380.5U CN204086207U (en) | 2014-10-08 | 2014-10-08 | High-temperature molten salt electrochemical test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574380.5U CN204086207U (en) | 2014-10-08 | 2014-10-08 | High-temperature molten salt electrochemical test system |
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| Publication Number | Publication Date |
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| CN204086207U true CN204086207U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420574380.5U Withdrawn - After Issue CN204086207U (en) | 2014-10-08 | 2014-10-08 | High-temperature molten salt electrochemical test system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215678A (en) * | 2014-10-08 | 2014-12-17 | 长沙理工大学 | High-temperature molten salt electriochemistry testing system |
| CN105388193A (en) * | 2015-07-14 | 2016-03-09 | 王军伟 | Sliding barrel type molten salt electrochemical corrosion measurement device and measurement method |
| CN107515238A (en) * | 2017-07-27 | 2017-12-26 | 中国原子能科学研究院 | It is a kind of to be used for the oxidation zirconium electrode that oxonium ion detects in high-temperature molten salt |
-
2014
- 2014-10-08 CN CN201420574380.5U patent/CN204086207U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215678A (en) * | 2014-10-08 | 2014-12-17 | 长沙理工大学 | High-temperature molten salt electriochemistry testing system |
| CN105388193A (en) * | 2015-07-14 | 2016-03-09 | 王军伟 | Sliding barrel type molten salt electrochemical corrosion measurement device and measurement method |
| CN105388193B (en) * | 2015-07-14 | 2017-11-07 | 王军伟 | Slide cartridge type fuse salt electrochemical corrosion measurement apparatus |
| CN107515238A (en) * | 2017-07-27 | 2017-12-26 | 中国原子能科学研究院 | It is a kind of to be used for the oxidation zirconium electrode that oxonium ion detects in high-temperature molten salt |
| CN107515238B (en) * | 2017-07-27 | 2019-09-13 | 中国原子能科学研究院 | A kind of oxidation zirconium electrode detected for oxonium ion in high-temperature molten salt |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150107 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |