CN205656176U - Seven grades of conductance cells of ion chromatograph - Google Patents
Seven grades of conductance cells of ion chromatograph Download PDFInfo
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- CN205656176U CN205656176U CN201620168585.2U CN201620168585U CN205656176U CN 205656176 U CN205656176 U CN 205656176U CN 201620168585 U CN201620168585 U CN 201620168585U CN 205656176 U CN205656176 U CN 205656176U
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- electrode needle
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- electrode
- needle
- ion chromatograph
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Abstract
The utility model provides a seven grades of conductance cells of ion chromatograph, seven grades of conductance cells include the withstand voltage insulating housing of watertight, electrode needle no. 1, electrode needle no. 2, electrode needle no. 3, electrode needle no. 4, electrode needle no. 5, electrode needle six, electrode needle seven, the withstand voltage insulating housing of watertight forms for the whole car system of precision finishing, the center has the honeycomb duct, the electrode needle of arranging in proper order no. 1 is being inlayed to the honeycomb duct inner wall, the electrode needle two, the electrode needle three, the electrode needle four, the electrode needle five, the electrode needle six, the electrode needle seven, wherein the electrode needle one, the electrode needle two, the electrode needle three, the electrode needle four, five top -down on the electrode needle are staggered arrangement in proper order, electrode needle six and seven relative disposition on the electrode needle, and it is all perpendicular with the honeycomb duct, the direct withstand voltage insulating housing of the cylindrical watertight outside of arriving, every electrode needle expose cross -section and water conservancy diversion pipe wall parallel and level.
Description
Technical field
Basis is the most practical newly relates to ion chromatograph detection technique field, is specifically related to a kind of seven grades of conductance cells of ion chromatograph.
Background technology
Chromatography of ions is the one of high performance liquid chromatography, therefore also known as high-efficient ion chromatogram (HPIC) or Modern Ion Chromatography, its mainly resin being different from conventional ion exchange chromatography column chromatography has the highest degree of cross linking and relatively low exchange capacity, sampling volume is the least, with plunger displacement pump conveying leacheate, leachates generally carries out on-line automatic continuous Conductivity detection.
The same with general HP LC instrument, present ion chromatograph is typically also and first makes unit block one by one, then requires to combine each required unit block according to analysis.Most basic assembly is flowing phase container, high pressure pump, injector, chromatographic column, electric conductivity detector and data handling system.Wherein electric conductivity detector is then intended to the variable concentrations separated through chromatographic column to measure out with the situation of change of flowing phase, and under difficult environmental conditions same sample is had identical response signal, so, electric conductivity detector should possess higher sensitivity, the wider detection by quantitative range of linearity, selectivity and repeatability.
At present, lower open mouth on conductance cell mozzle used on ion chromatograph, mozzle inwall is provided with the ring-type sensitive electrode that metal ring is constituted, and is arranged above and below along tube wall and the holding wire of ring-type sensitive electrode of alternate setting is connected on change-over circuit through mozzle tube wall.When sample flows through from mozzle along with leacheate, the signal that sensitive electrode detects passes to conversion circuit, and conversion circuit is connected and composed by exciting signal source, amplifier, AC/DC changeover switch, precision resistance and electrode.Between change-over circuit self-conductance pond electrode in the future, the voltage signal of the change of sample resistance, is converted to conductivity signal, has completed conductivity measurement.
Due to conductance cell installation is the ring-type sensitive electrode being made up of metal ring, can produce interelectrode capacity, and the generation of interelectrode capacity will produce certain impact to measurement result, causes the inaccuracy of measurement result between each metal ring plane electrode；Simultaneously, conductance cell used in ion chromatograph is typically all the 5 grades of conductance cells using sensitivity higher and measures the ion of low concentration in sample at present, but owing in sample, the concentration difference of different ions is bigger, the chromatography of ions peak arising that low concentration so will be caused to be covered by the chromatographic peak of high concentration ion completely or low concentration chromatography of ions peak shows, and high concentration ion is because of excessive concentration, the chromatographic peak generation peak shape shown or area distortion, need to add pretreatment column high-concentration and low-concentration ion in sample is analyzed respectively, thus cause measurement result that deviation occurs.
Summary of the invention
The purpose of this utility model is to provide a kind of seven grades of conductance cells of ion chromatograph, with the defect overcoming prior art intermediate ion chromatograph conductance cell to exist.For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of seven grades of conductance cells of ion chromatograph, seven grades of described conductance cells include watertight pressure-resistant insulation shell, electrode needle one, electrode needle two, electrode needle three, electrode needle four, electrode needle five, electrode needle six, electrode needle seven；Described watertight pressure-resistant insulation shell forms for overall car system, center has mozzle, mozzle inwall inlay be arranged in order electrode needle one, electrode needle two, electrode needle three, electrode needle four, electrode needle five, electrode needle six, electrode needle seven, wherein electrode needle one, electrode needle two, electrode needle three, electrode needle four, electrode needle five are staggered the most successively, electrode needle six and electrode needle seven arranged opposite, and it is all vertical with mozzle, outside cylindrical watertight pressure-resistant insulation shell, the exposure cross section of each electrode needle is concordant with water conservancy diversion tube wall.
Furthermore, watertight pressure-resistant insulation shell described in technique scheme is cylindrical, and matrix of materials is politef.
Furthermore, the electrode needle described in technique scheme is the material of rustless steel or silver.
Furthermore, electrode needle one described in technique scheme, electrode needle two, electrode needle three, electrode needle four and electrode needle five obtain low concentration ion chemistry signal in sample jointly, are converted further into the signal of telecommunication, are input to data handling system to complete test.
Furthermore, electrode needle six described in technique scheme and electrode needle seven obtain sample middle and high concentration ion chemistry signal jointly, are converted further into the signal of telecommunication, are input to data handling system to complete test.
The beneficial effects of the utility model are: 1) by installing electrode needle, reduce interelectrode capacity, make measurement result more accurate；2) sample that concentration difference is big disposably being completed test, temperature is unified, improves measuring accuracy；3) to the big sample of concentration difference without carrying out high concentration ion pretreatment, decrease analysis time, improve determination efficiency, reduce detection operating cost.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, constitutes the part of the application, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the plan structure schematic diagram of seven grades of conductance cells of this utility model ion chromatograph；
Fig. 2 is seven grades of conductance cell front-view schematic diagram of this utility model ion chromatograph
Fig. 3 is that seven grades of conductance cell backsights of this utility model ion chromatograph regard schematic diagram
In figure, 1 is watertight pressure-resistant insulation shell, and 2 is mozzle, and 3 is electrode needle one, and 4 is electrode needle two, and 5 is electrode needle three, and 6 attach most importance to electrode needle four, and 7 is electrode needle five, and 8 is electrode needle six, and 9 is electrode needle seven.
Detailed description of the invention:
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the various different modes that this utility model can be defined by the claims and cover are implemented.
According to Fig. 1, Fig. 2 and Fig. 3, a kind of seven grades of conductance cells of ion chromatograph, seven grades of described conductance cells include watertight pressure-resistant insulation shell 1, electrode needle 1, electrode needle 24, electrode needle 35, electrode needle 46, electrode needle 57, electrode needle 68, electrode needle 79；Described watertight pressure-resistant insulation shell 1 forms for Precision Machining entirety car system, center has mozzle 2, mozzle 2 inwall inlays the electrode needle 1 being arranged in order, electrode needle 24, electrode needle 35, electrode needle 46, electrode needle 57, electrode needle 68, electrode needle 79, wherein electrode needle 1, electrode needle 24, electrode needle 35, electrode needle 46, electrode needle 57 is staggered the most successively, electrode needle 68 and electrode needle 79 arranged opposite, and it is all vertical with mozzle 2, outside cylindrical watertight pressure-resistant insulation shell 1, the exposure cross section of each electrode needle is concordant with mozzle 2 wall.
nullFlowing is delivered to analysis system with stable flow velocity (or pressure) by infusion pump，By injector by Sample introduction before chromatographic column，Flowing brings sample into chromatographic column，The most each component is separated,And it flow to seven grades of conductance cells mutually with flowing successively，When in sample, low concentration ion flows through seven grades of conductance cells by electrode needle 1、Electrode needle 24、Electrode needle 35、Electrode needle 46、Electrode needle 57 capture jointly forms chemical signal，Further it is converted into the signal of telecommunication，Sample middle and high concentration ion is captured by the electrode needle 68 in seven grades of conductance cells and electrode needle 79 and forms chemical signal，Further it is converted into the signal of telecommunication，Two signals of telecommunication carry out test analysis by data handling system，It is optimized combination，Ultimately form an optimal digital signal，Deliver to D/A and be converted to analog quantity，And then further form preferable chromatographic peak collection of illustrative plates.
Claims (5)
1. seven grades of conductance cells of an ion chromatograph, it is characterised in that seven grades of described conductance cells include watertight pressure-resistant insulation shell, electrode needle one, electrode needle two, electrode needle three, electrode needle four, electrode needle five, electrode needle six, electrode needle seven；Described watertight pressure-resistant insulation shell forms for overall car system, center has mozzle, mozzle inwall inlay be arranged in order electrode needle one, electrode needle two, electrode needle three, electrode needle four, electrode needle five, electrode needle six, electrode needle seven, wherein electrode needle one, electrode needle two, electrode needle three, electrode needle four, electrode needle five are staggered the most successively, electrode needle six and electrode needle seven arranged opposite, and it is all vertical with mozzle, outside cylindrical watertight pressure-resistant insulation shell, the exposure cross section of each electrode needle is concordant with water conservancy diversion tube wall.
A kind of seven grades of conductance cells of ion chromatograph the most according to claim 1, it is characterised in that: described watertight pressure-resistant insulation shell is cylindrical, and matrix of materials is politef.
A kind of seven grades of conductance cells of ion chromatograph the most according to claim 1, it is characterised in that: described electrode needle is the material of rustless steel or silver.
A kind of seven grades of conductance cells of ion chromatograph the most according to claim 1, it is characterized in that: described electrode needle one, electrode needle two, electrode needle three, electrode needle four and electrode needle five obtain low concentration ion chemistry signal in sample jointly, it is converted further into the signal of telecommunication, is input to data handling system to complete test.
A kind of seven grades of conductance cells of ion chromatograph the most according to claim 1, it is characterized in that: described electrode needle six and electrode needle seven obtain sample middle and high concentration ion chemistry signal jointly, it is converted further into the signal of telecommunication, is input to data handling system to complete test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168585.2U CN205656176U (en) | 2016-03-04 | 2016-03-04 | Seven grades of conductance cells of ion chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168585.2U CN205656176U (en) | 2016-03-04 | 2016-03-04 | Seven grades of conductance cells of ion chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205656176U true CN205656176U (en) | 2016-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620168585.2U Expired - Fee Related CN205656176U (en) | 2016-03-04 | 2016-03-04 | Seven grades of conductance cells of ion chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205656176U (en) |
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2016
- 2016-03-04 CN CN201620168585.2U patent/CN205656176U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161019 Termination date: 20190304 |