CN201477068U - Salt electrolysis cell - Google Patents
Salt electrolysis cell Download PDFInfo
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- CN201477068U CN201477068U CN2009202360449U CN200920236044U CN201477068U CN 201477068 U CN201477068 U CN 201477068U CN 2009202360449 U CN2009202360449 U CN 2009202360449U CN 200920236044 U CN200920236044 U CN 200920236044U CN 201477068 U CN201477068 U CN 201477068U
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Abstract
The utility model discloses a salt electrolysis cell. The cell body comprises a central chamber (8), a reference chamber (6) and a cathode chamber (9), the reference chamber (6) and the cathode chamber (9), which are positioned at both sides, are communicated with the central chamber (8) through side arms (10), electrolyte is filled in the cell body, a reference electrode (1) is positioned in the reference chamber (6), an electrolytic cathode (5) is positioned in the cathode chamber (9), a measuring electrode (2) and an electrolytic anode (4) are positioned in the central chamber (8), and the central chamber (8) is provided with a sample inlet (3). Because the capacity of the central chamber is reduced, the usage of the electrolyte each time is reduced by half, and the sensitivity of detection is increased. Because the ion exchange membrane is replaced by the ceramic sand core, the ion permeability is increased, the stability of electrode potential is ensured, the trouble of replacing the broken ion exchange membrane is reduced, and thereby maintenance is reduced. Because the reference electrode is formed in one step, the service life is long, silver cannot easily leak out, and the reference chamber does not need to be remounted.
Description
Technical field
The utility model relates to a kind of salt electrolytic cell that is used for the working sample salt content, belongs to chemical analysis and quantitative analysis tech field.
Background technology
Electrolytic cell (claiming titration cell again) is a most important component in the micro-coulometric titration instrument, it forms closed loop negative feedback system with the coulomb electron-amplifier, the mensuration that can be used for the salt content in heavy oil, residual oil, refinery and oil field and various process water and the discharge water also is applicable to inorganic chlorine ion determination in the above-mentioned various sample simultaneously.Existing electrolytic cell is made up of pond body, Chi Gai, be marked with electrolytic solution in the body of pond, be provided with in the body of pond and be fixed on the pond and cover and stretch into reference chamber, cathode chamber in the body of pond, reference electrode is positioned at reference chamber, electrolysis cathode is positioned at cathode chamber, potential electrode and electrolytic anode are arranged in pond body electrolytic solution, adopt amberplex that potential electrode and reference electrode, electrolysis cathode and electrolytic anode are kept apart.Amberplex is immersed in for a long time in the high concentrated acid solution and can be corroded, keep the constant metal salt solution of reference electrode current potential directly to be penetrated in the anode chamber by the amberplex that is corroded, cause the current potential of potential electrode to change, sensitivity and stability that influence is measured, when serious experiment can't be carried out, must often change amberplex and refitting reference chamber.This structure need be used two kinds of amberplexes and load reference chamber in addition, and parts are many, and assembling is complicated.
Summary of the invention
The utility model provide a kind of simple in structure, measure salt electrolytic cell highly sensitive, good stability, and maintenance reduces greatly.
The technical solution of the utility model is as follows: a kind of salt electrolytic cell, be provided with reference electrode, potential electrode, electrolytic anode and electrolysis cathode in the body of pond, described pond body comprises centre chamber and is positioned at the reference chamber and the cathode chamber of centre chamber both sides, described reference chamber and cathode chamber are connected with centre chamber by side arm, be marked with electrolytic solution in the body of pond, reference electrode is positioned at reference chamber, and electrolysis cathode is positioned at cathode chamber, potential electrode and electrolytic anode are positioned at centre chamber, and centre chamber is provided with injection port.
In the utility model, described centre chamber is provided with ceramic core with reference chamber, centre chamber with the cathode chamber place of connection, and described ceramic core is isolated potential electrode and reference electrode, electrolytic anode and electrolysis cathode.Described reference electrode is encapsulated in the electrode tube, and expand at described electrode tube middle part, is filled with the pasty state silver acetate in it, and reference electrode passes silver acetate and stretches out the electrode tube lower end and enters in the reference chamber.
Reference electrode in the titration cell provides a constant reference potential, and forms indicator electrode to producing a voltage signal with potential electrode.This signal with add given bias voltage differential concatenation after be added in a coulomb amplifier input terminal.When two magnitudes of voltage equated, amplifier was input as zero, and output also is zero, electrolysis electrode between do not have electric current to pass through, be a level and smooth baseline on the instrument display.When sample injects titration cell by syringe, consume the titrant Ag in the electrolytic solution
+The current potential that it is right that the variation of titrant concentration makes the indicator electrode in the titration cell changes, and micro-processor controlled microcoulomb amplifier is sent in the variation of its value, after amplifying, be added to electrolysis electrode to (cathode and anode) on, power at anode and to bear titration ion A g
+, with the titrant Ag of supplement consumed
+Said process is along with titration ion A g
+Consumption carry out continuously, enter until the material of no consumption titration ion, and electricity bears enough titration ions, makes the right value of indicator electrode equal given bias value again, instrument restores balance.Consuming---replenish titration ion A g
+Process in, the electric weight when measuring electricity and giving birth to titrant carries out data processing according to Faraday's laws of electrolysis, then can calculate sample size.
The utility model places reference chamber and electrolysis cathode on the side arm respectively with reference electrode, electrolysis cathode, and centre chamber's volume reduces, and single electrolytic solution use amount is about 80-100ml, for about half of former electrolytic solution use amount, has improved the sensitivity that detects.With ceramic core substitution ion exchange membrane, centre chamber and reference chamber, cathode chamber are isolated, improved ion permeability, guaranteed the stability of electrode potential, reduced the trouble of changing again after the ion-exchange film rupture.Reference electrode is encapsulated in the electrode tube that expands at the middle part, is filled with the pasty state silver acetate in the electrode tube, and reference electrode passes silver acetate and stretches out the electrode tube lower end, forms silver/silver acetate electrode, one-shot forming, and long service life is difficult for taking place to leak silver and refitting reference chamber.The utility model has not only reduced cost but also has obtained higher sensitivity and response speed, makes the precision of micro-coulometric titration instrument and stability obtain bigger raising.
Description of drawings
Fig. 1 is a stereographic map of the present utility model
Fig. 2 is a structural representation of the present utility model
Embodiment
According to Fig. 1, shown in Figure 2, a kind of salt electrolytic cell, it comprises cylindricality centre chamber 8, reference chamber 6 and cathode chamber 9, reference chamber 6, cathode chamber 9 are connected with centre chamber 8 by side arm 10 respectively, be provided with potential electrode 2 and electrolytic anode 4 in the centre chamber 8, be provided with reference electrode 1 in the reference chamber 6, be provided with electrolysis cathode 5 in the cathode chamber 9.The glacial acetic acid that is marked with 80 milliliter 70% in the centre chamber 8 covers in the centre chamber 8 and is provided with injection port 3 as electrolytic solution.Centre chamber 8 is provided with ceramic core 7 with reference chamber 6, centre chamber 8 with cathode chamber 9 places of connection, and potential electrode 2 and reference electrode 1, electrolytic anode 4 are isolated with electrolysis cathode 5.Described reference electrode 1 is encapsulated in the electrode tube, and expand at described electrode tube middle part, is filled with the pasty state silver acetate in it, and reference electrode 1 passes silver acetate and stretches out the electrode tube lower end and enters in the reference chamber 6.The material of each electrode is: potential electrode Ag, reference electrode Ag/AgAc, electrolytic anode Ag, electrolysis cathode Pt, above-mentioned potential electrode 2 is right with reference electrode 1 composition indicator electrode, electrolytic anode 4 is right with electrolysis cathode 5 composition electrolysis electrodes, and each electrode is connected with the microcoulomb amplifier by lead, forms the closed loop robot control system(RCS).Measurement range: salt content: 0.2-10000mgNaCl/L; Inorganic chlorine ion: 0.1ppm-percentage composition.Measuring accuracy :≤2mg/L, absolute deviation: ± 0.2mg/L;＞2mg/L, relative deviation: ± 10%.
Claims (3)
1. salt electrolytic cell, be provided with reference electrode (1) in the body of pond, potential electrode (2), electrolytic anode (4) and electrolysis cathode (5), it is characterized in that described pond body comprises cylindricality centre chamber (8) and is positioned at the reference chamber (6) and the cathode chamber (9) of centre chamber both sides, described reference chamber (6) and cathode chamber (9) are connected with centre chamber (8) by side arm (10), be marked with electrolytic solution in the body of pond, reference electrode (1) is positioned at reference chamber (6), electrolysis cathode (5) is positioned at cathode chamber (9), potential electrode (2) and electrolytic anode (4) are positioned at centre chamber (8), and centre chamber (8) is provided with injection port (3).
2. a kind of salt electrolytic cell according to claim 1, it is characterized in that described centre chamber (8) is provided with ceramic core (7) with reference chamber (6), centre chamber (8) with cathode chamber (9) place of connection, described ceramic core (7) is isolated potential electrode (2) and reference electrode (1), electrolytic anode (4) with electrolysis cathode (5).
3. a kind of salt electrolytic cell according to claim 1, it is characterized in that described reference electrode (1) is encapsulated in the electrode tube, expand at described electrode tube middle part, is filled with the pasty state silver acetate in it, and reference electrode (1) passes silver acetate and stretches out the electrode tube lower end and enters in the reference chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202360449U CN201477068U (en) | 2009-09-18 | 2009-09-18 | Salt electrolysis cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202360449U CN201477068U (en) | 2009-09-18 | 2009-09-18 | Salt electrolysis cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477068U true CN201477068U (en) | 2010-05-19 |
Family
ID=42413319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202360449U Expired - Fee Related CN201477068U (en) | 2009-09-18 | 2009-09-18 | Salt electrolysis cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743799A (en) * | 2013-12-30 | 2014-04-23 | 泰州市中环分析仪器有限公司 | Electrolytic tank for determining salt content |
-
2009
- 2009-09-18 CN CN2009202360449U patent/CN201477068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743799A (en) * | 2013-12-30 | 2014-04-23 | 泰州市中环分析仪器有限公司 | Electrolytic tank for determining salt content |
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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: 20100519 Termination date: 20140918 |
|
| EXPY | Termination of patent right or utility model |