CN2071340U - Electrolysis used in line potential gradient detector - Google Patents
Electrolysis used in line potential gradient detector Download PDFInfo
- Publication number
- CN2071340U CN2071340U CN 89219965 CN89219965U CN2071340U CN 2071340 U CN2071340 U CN 2071340U CN 89219965 CN89219965 CN 89219965 CN 89219965 U CN89219965 U CN 89219965U CN 2071340 U CN2071340 U CN 2071340U
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- electrode
- potential gradient
- detecting device
- amplifier
- input impedance
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Abstract
The utility model provides a potential gradient detector which realizes the on-line inspection of electrolysis. A sensor is provided with a chip-shaped electrode which is made of platinum-iridium alloy, the thickness of the chip-shaped electrode is smaller than 8 mu m, so an input amplifier has extremely high impedance, the front stage and the back stage of a detecting unit adopt electro-optic coupling, and a power source is provided with a high-voltage insulating transformer. Thus, the utility model solves the problems of bubbles and electrode activation existing in the prior art, and realizes the on-line inspection of the result of electrolysis analysis.
Description
The utility model belongs to the electrophoresis online measuring technique.
The utility model is a kind of potential gradient detector that is applied to capillary isotachophoresis, efficient capillary zone electrophoresis, capillary isoelectric focusing electrophoresis and kapillary electrokinetic chromatography.District's band of the different material that can online detection electrophoretic separation goes out by this detecting device carries out qualitative and quantitative analysis to this material.
Mainly (two perseverances are constant voltage, continuous current to existing electrophoretic apparatus by two perseverances or Constant power supply; Three perseverances are constant voltage, continuous current, permanent power) and the electrophoresis tank composition, electrophoretic separation result needs dyed, decolouring, and transparence is made egative film, sends out with the side of photoscanning and detects.The conventional online pick-up unit is made up of thread platinum electrode (26) and reception amplifier (27).The conventional online pick-up unit causes the stream obstruction and test can't be carried out because of the reason of structure, selection and the circuit High-Voltage Insulation design of sensor very easily produces bubble.Also easily producing electrode on the other hand intensifies effect and empirical curve is degenerated and can't utilize.
The purpose of this utility model is to provide a kind of potential gradient detector that the electrophoretic separation result is carried out online detection.Design by critical component electric potential gradient microsensor and realize that effectively high pressure isolates easily goes out bubble and electrode intensifies problem thereby solved, and makes potential gradient detector practicability, realizes electrophoretic separation result's online detection.
By figure one as seen, main points of the present utility model are: the electric signal in the kapillary stream is received by electric potential gradient sensor (1), carry out impedance conversion through high input impedance amplifier (2), input voltage-frequency changer (3) converts the electrical signal to pulse signal then, pulse signal is through photoelectric commutator (6), from and become light signal again electric signal and realized that the high pressure of signal transmission loop isolates.Convert pulse signal to corresponding DC potential through frequency to voltage converter (7) then, again through integrating amplifier (8) and differentiating amplifier (9) obtain the different material corresponding DC level of district's band and with the corresponding differential signal of district's zone boundary face, import two-pen recorder (10) at last and carry out record.Result such as Fig. 2 of two-pen recorder record.For isotachophoresis, the character of the different high representative species in rank, the content between the differentiated pulse apart from representative species.
The utility model is isolated for the high pressure of realizing power supply, has designed first voltage regulation unit (11), isolating transformer (12), second voltage regulation unit (13) and High-Voltage Insulation transformer (14).Such second voltage regulation unit (13) is isolated by the two-stage of isolating transformer (12) and High-Voltage Insulation transformer (14), has realized that High-Voltage Insulation floats over the ground.
Key of the present utility model is the structural design of electric potential gradient sensor (1), the selection of the shape of microelectrode, size and material.Fig. 3 is the concrete structure figure of electric potential gradient sensor.It is made up of kapillary (15), joint bolt (16), arc-spark stand I (17), contact conductor (18), packing ring (19), electrode gib screw (20), arc-spark stand II (21), electrode jacket (22), electrode stand (23), electrode slice (24) and dielectric film (25).The theoretical analysis and a large amount of contrast experiment, its material of electrode slice (24) should use platinumiridio, is shaped as sheet, and thickness should be less than 8 μ m.Use less than the 0.05mm polytetrafluoroethylene film alternate between the electrode slice (24), electrode slice (24) is installed on arc-spark stand (17), (21), it is compressed and beats the through hole of ∮ 0.5mm with packing ring (19) and electrode jacket (22), its poly-tetrafluoro kapillary with the ∮ 0.5mm of flow path channel is communicated.
As embodiment of the present utility model, Fig. 4 has provided physical circuit figure, the specifications and models of main components and parts and the connecting relation between the each several part.This is further specified as follows:
1, high input impedance amplifier (2) is made the amplifier of input stage for 3D07 type field effect transistor.Because the input impedance of this amplifier is up to 10
9Ω intensifies effect thereby suppressed electrode effectively.
2, voltage-to-frequency converter (VFD) (3) and frequency are pressed transducer (FVD) (7) selected module circuit.The model of these two kinds of devices is respectively DL8103 and QD451.The simulating signal variation range is at 0.1mV-10V, and inversion frequency is 0-10KHZ.
3, photoelectric commutator (4), photo-coupler (5) and photoelectric commutator (6) adopt HG413 type light emitting diode and 3DU32 type phototriode to realize photoelectricity and opto-electronic conversion respectively; The optical channel of photo-coupler (5) is made with the transparent organic glass rod, and overcoat is a polytetrafluoroethylmaterial material.For bearing the above high pressure of 25KV, optical channel must long enough (greater than 1cm).
4, integrating amplifier (8) and differentiating amplifier (9) are realized by 741 type integrated circuit.W7815 and the integrated Voltage stabilizing module of W7915 type are adopted in first, second voltage regulation unit (11), (13).Output voltage is ± and 15 volts.
5, the common transformer made for C sections core of isolating transformer (12).High-Voltage Insulation transformer (14) adopts the totally-enclosed skeleton of organic glass and uses the epoxy resin embedding, makes the back and requires to stand 25KV high-voltage breakdown experiment.
6, two-pen recorder (10) is the desk-top electron potentiometer of XWT-204 type.
Claims (5)
1, the online potential gradient detector of electrophoresis, form by thread platinum electrode [26] and reception amplifier [27], it is characterized in that this detecting device by electric potential gradient sensor [1], high input impedance amplifier [2], Voltage-to-frequency Converter [3], electrical to optical converter [4], photoelectrical coupler [5], photoelectric commutator [6], press transducer [7], integrating amplifier [8] and differentiating amplifier [9] to constitute frequently, the level high pressure is isolated and the signal transmission before and after realizing, joins two-pen recorder [10] recording of output signals.
2,, it is characterized in that electric potential gradient sensor (1) is made up of kapillary (15), joint bolt (16), electrode (17), (21), contact conductor (18), packing ring (19), electrode gib screw (20), electrode jacket (22), electrode stand (23), electrode slice (24) and dielectric film (25) according to the detecting device in the claim 1.
3, according to the detecting device in the claim 1, it is characterized in that the electrode slice (24) in the electric potential gradient sensor (1) is made sheet by platinumiridio, its thickness is less than 8 μ m.
4, according to the detecting device in the claim 1, it is characterized in that its passage of photoelectrical coupler (5) greater than 1cm, passage is made with transparent threaded organic glass, applies mechanically poly-PTFE outward and makes.
5,, it is characterized in that high input impedance amplifier (2) input impedance should be greater than 1000 megohms according to the detecting device in the claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219965 CN2071340U (en) | 1989-11-23 | 1989-11-23 | Electrolysis used in line potential gradient detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219965 CN2071340U (en) | 1989-11-23 | 1989-11-23 | Electrolysis used in line potential gradient detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2071340U true CN2071340U (en) | 1991-02-13 |
Family
ID=4874733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89219965 Expired - Lifetime CN2071340U (en) | 1989-11-23 | 1989-11-23 | Electrolysis used in line potential gradient detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2071340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419184B (en) * | 2008-11-18 | 2012-05-09 | 浙江大学 | Ir/IrOx electrode making method |
| CN107179333A (en) * | 2017-06-20 | 2017-09-19 | 巴斯夫上海涂料有限公司 | Detect method and its application of the electrodeposited paint film to base material side along protective value |
-
1989
- 1989-11-23 CN CN 89219965 patent/CN2071340U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419184B (en) * | 2008-11-18 | 2012-05-09 | 浙江大学 | Ir/IrOx electrode making method |
| CN107179333A (en) * | 2017-06-20 | 2017-09-19 | 巴斯夫上海涂料有限公司 | Detect method and its application of the electrodeposited paint film to base material side along protective value |
| CN107179333B (en) * | 2017-06-20 | 2019-08-16 | 巴斯夫上海涂料有限公司 | Electrodeposited paint film is detected to base material side along the method and its application of protective value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |