CN202033336U - Anti-interference device of ion chromatography electric conductivity detector - Google Patents
Anti-interference device of ion chromatography electric conductivity detector Download PDFInfo
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- CN202033336U CN202033336U CN2011201063387U CN201120106338U CN202033336U CN 202033336 U CN202033336 U CN 202033336U CN 2011201063387 U CN2011201063387 U CN 2011201063387U CN 201120106338 U CN201120106338 U CN 201120106338U CN 202033336 U CN202033336 U CN 202033336U
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- electric conductivity
- jamming
- conductivity detector
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- shell layer
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Abstract
Provided is an anti-interference device of an ion chromatography electric conductivity detector. The electric conductivity detector is arranged in an inner cavity space formed by a casing of the anti-interference device. The casing is provided with a metal casing layer with high magnetic conductivity and a metal casing layer with low electrical resistivity, and the two metal casing layers are arranged at intervals and isolate the outside interference signal source and shield the detection signal source of the electric conductivity detector. Conductive rubber pieces are filled in non-conductive gaps of the two metal casing layers, thereby eliminating electromagnetic leakage at non-conductive spots. An electromagnetic sealing gasket protects an output pipe and an input pipe of the electric conductivity detector, and the electromagnetic sealing gasket and a conductive coating retain continuous electric conduction of the metal casing layers.
Description
Technical field
The utility model relates to the electric conductivity detector of chromatography of ions instrument, is a kind of means for anti-jamming of ion chromatograph conductance detecting device concretely.
Background technology
The electricity of ion chromatograph electric conductivity detector is led can apply a midfrequent AC detection signal between the pole piece, the midfrequent AC detection signal is as sensed signal sources, the ion composition in the solution to be measured is directly changed into electricity leads and detect.The noise that changes with the irrelevant electric conductivity detector output signal random disturbance of sample is one of principal element of electric conductivity detector bad stability, makes electricity lead the upwards drift of baseline of detection.Noise causes the electric conductivity detector check and analysis to produce error, influences detectability, when serious ion chromatograph can't be worked.There is the influence of two aspects in the sensed signal sources of electric conductivity detector: the one, and electricity is led the midfrequent AC signal of sensed signal sources to space radiation, and the electromagnetic interference signal source that the sensitive circuit around it is formed causes detecting error; The 2nd, with the external interference signal source of midfrequent AC detection signal resonance, reduced the signal to noise ratio (S/N ratio) of electric conductivity detector greatly, make the electric conductivity detector noise become big, also significantly reduce the detection sensitivity of electric conductivity detector simultaneously.
The utility model content
The midfrequent AC detection signal that the utility model will solve existing electric conductivity detector causes detecting error to the electromagnetic interference signal source that sensitive circuit on every side forms, and cause that the external interference signal source of resonance reduces the signal to noise ratio (S/N ratio) of electric conductivity detector, makes noise become technical matters big and that detection sensitivity reduces, provide a kind of sensed signal sources shielding, simultaneously the means for anti-jamming of the ion chromatograph conductance detecting device that the external interference signal source is isolated to electric conductivity detector.
In order to solve the problems of the technologies described above, the technical scheme that the utility model is taked is: a kind of means for anti-jamming of ion chromatograph conductance detecting device, electric conductivity detector are arranged in the intracavity space of the housing formation of means for anti-jamming; Housing has the metal shell layer of high permeability and the metal shell layer of low-resistivity, the alternate setting of this two housings layer.
When there is the higher interfere with electromagnetic field of frequency in the external world, the eddy current that produces in the metal shell layer of low-resistivity externally comes electromagnetic wave to form negative function, thereby reaches the effect of shielding interference signal source; The metal shell layer of high permeability is with the sensed signal sources shielding of electric conductivity detector, and simultaneously when the extraneous lower interfere with electromagnetic field of frequency that exists, the interference of the lower interference electromagnetic wave of frequency to detection signal eliminated in the shielding action of the metal shell layer of high permeability.The housing insulation of electric conductivity detector and means for anti-jamming.
The metal shell layer of high permeability and the metal shell layer of low-resistivity are made by sheet metal respectively, and the connection seam crossing between sheet metal is sealed by conductive rubber slice.Conductive rubber slice has been filled the non-conductive slit of the metal shell layer of the metal shell layer of high permeability and low-resistivity, has eliminated the electromagnetic leakage of non-conductive point.
Fill sealing by conductive rubber slice between the metal shell layer of high permeability and the metal shell layer of low-resistivity.Can eliminate the electromagnetic leakage of non-conductive point reliably.
The poling hole is arranged on the housing of means for anti-jamming, and setting-in has the electromagnetic sealing liner of electric conductivity in the poling hole, and the efferent duct of electric conductivity detector and input pipe pass from the endoporus of electromagnetic sealing liner.Electromagnetic sealing liner protection efferent duct and input pipe are avoided being scratched damage by the housing poling hole of means for anti-jamming, and the electric conductivity of electromagnetic sealing liner keeps the metal shell layer of high permeability and the metal shell layer of low-resistivity to conduct electricity continuously.
The electrode connecting line of electric conductivity detector passes from the endoporus of electromagnetic sealing liner.Electrode connecting line connects signal processing module and electric conductivity detector.
The endoporus of electromagnetic sealing liner and efferent duct, input pipe and electrode connecting line gap location scribble electrically-conducting paint.Electrically-conducting paint keeps the metal shell of high permeability and the metal shell layer of low-resistivity to conduct electricity continuously.
The sheet metal of the metal shell layer of high permeability and the metal shell layer of low-resistivity is connected seam crossing and is coated with electrically-conducting paint.Electrically-conducting paint guarantees that further sheet metal connects the seam crossing conduction continuously.
Electrode connecting line parcel screen layer.The screen layer shield electromagnetic interference has improved means for anti-jamming bulk shielding effect.
The utility model has the advantages that: the metal shell layer of low-resistivity and the metal shell layer of high permeability to external world interference signal source isolated, with the shielding of the sensed signal sources of electric conductivity detector.Conductive rubber slice has been filled the non-conductive slit of metal shell layer, has eliminated the electromagnetic leakage of non-conductive point.The efferent duct and the input pipe of electromagnetic sealing liner protection electric conductivity detector, electromagnetic sealing liner, electrically-conducting paint keep metal shell layer conduction continuously.
Description of drawings
The structural representation of an embodiment of the utility model.
Embodiment
Accompanying drawings.For sake of clarity, means for anti-jamming is represented with sectional view.
The electric conductivity detector 9 of embodiment is five electrode conductance detecting devices of organic glass shell among the figure, and two electricity is led the sine wave of the 2000-4000Hz that applies between pole piece or the alternating-current detection signal sensed signal sources as electric conductivity detector.Five electrode connecting lines 12 connect five electricity and lead pole piece and signal processing module 1, and signal processing module 1 is mainly used in the sensed signal sources of handling and electric conductivity detector 9 taking place.For guaranteeing the shield effectiveness of means for anti-jamming integral body, the every electrode connecting line 12 of electric conductivity detector 9 is single-core shielding line, the screen layer of five electrode connecting lines 12 links together and links to each other with the ground wire of signal processing module 1, the skin of five electrode connecting lines 12 with the shielding line parcel, links to each other with the housing of means for anti-jamming more at last.The waste discharge parts of the efferent duct 6 sensible ion chromatographs of electric conductivity detector 9, the input pipe 10 of electric conductivity detector 9 links to each other with ion chromatographic eliminator.The housing of means for anti-jamming has the metal shell layer 4 of low-resistivity and the metal shell layer 2 inside and outside two-layer housing of high permeability, the alternate setting of two-layer housing of suit.The metal shell layer 2 usefulness good economy performance and the good iron plate material of magnetoconductivity of high permeability are made.The metal shell layer 2 that profile is cubical high permeability is made up of two parts and is formed, and a part is the square tube type iron-clad, and another part is a L shaped right angle iron-clad, and two parts are fastened.Metal shell layer 4 usefulness that profile is cubical low-resistivity are easy to process, good economy performance and the little copper coin material of resistivity are made, and its structure is identical with the structure of the metal shell layer 2 of high permeability.The metal shell layer 2 of high permeability and the metal shell layer 4 of the low-resistivity seam crossing that is connected between sheet metal are separately sealed by conductive rubber slice 3, conductive rubber slice 3 has been filled the non-conductive slit of the metal shell layer 4 of the metal shell layer 2 of high permeability and low-resistivity, reduce the penetrability of the magnetic line of force, eliminated the electromagnetic leakage of non-conductive point, the conductive rubber slice 3 of present embodiment is that silver-plated shot copper cooperates with silicon rubber and makes.The insulation shell 7 that organic glass is made is fixedlyed connected with the inner chamber of the metal shell layer 4 of low-resistivity, groove in the middle of it is used for installing and fixing electric conductivity detector 9, the metal shell layer 4 of low-resistivity is carried out electrical isolation, make electric conductivity detector 9 in whole means for anti-jamming with any metal shell electrical isolation.Among the figure means for anti-jamming about a housing poling hole is respectively arranged, respectively be embedded with electromagnetic sealing liner 5 in the housing poling hole with electric conductivity, the efferent duct 6 of electric conductivity detector 9 passes from the electromagnetic sealing liner endoporus on right side, the input pipe 10 of electric conductivity detector 9 and electrode connecting line 12 pass from the electromagnetic sealing liner endoporus in left side, and the electromagnetic sealing liner 5 of present embodiment is that silvered glass beads cooperates with fluorosioloxane rubber and makes.The metal shell layer 4 of the electromagnetic sealing liner endoporus in the electromagnetic sealing liner endoporus on right side and the gap location of efferent duct 6, left side and the gap location of input pipe 10 and electrode connecting line 12, low-resistivity and the metal shell layer 2 of the high permeability electrically-conducting paint 11 that is connected seam crossing spraying TF-828 fine silver conductive paint separately.Be connected, compress the protective ground line between the metal shell layer 2 of ground wire coupling bolt 8 and high permeability; and the metal shell layer 4 of the metal shell layer 2 of high permeability, conductive rubber slice 3, low-resistivity and insulation shell 7 be connected and fixed be integral, make electric conductivity detector 9 in whole means for anti-jamming, can not move and rotate.For keeping the conduction continuity on metal shell surface, ground wire coupling bolt 8 scribbles electrically-conducting paint 11 with the junction of the metal shell layer 2 of high permeability.The electrically-conducting paint 11 at electromagnetic sealing liner endoporus place only draws among the figure.
Means for anti-jamming of the present utility model is a kind of interference signal source in the external world can the isolation, the detection signal of self can be controlled in certain scope again, reduces self sensed signal sources and other circuit is produced the electric conductivity detector means for anti-jamming that disturbs.
Claims (8)
1. the means for anti-jamming of an ion chromatograph conductance detecting device is characterized in that electric conductivity detector (9) is arranged in the intracavity space of the housing formation of means for anti-jamming; Housing has the metal shell layer (2) of high permeability and the metal shell layer (4) of low-resistivity, the alternate setting of this two housings layer.
2. the means for anti-jamming of ion chromatograph conductance detecting device according to claim 1 is characterized in that the electric conductivity detector (9) and the housing of means for anti-jamming insulate.
3. the means for anti-jamming of ion chromatograph conductance detecting device according to claim 1, it is characterized in that the metal shell layer (2) of high permeability and the metal shell layer (4) of low-resistivity made by sheet metal respectively, the connection seam crossing between sheet metal is sealed by conductive rubber slice (3).
4. the means for anti-jamming of ion chromatograph conductance detecting device according to claim 1, it is characterized in that on the housing of means for anti-jamming the poling hole being arranged, setting-in has the electromagnetic sealing liner (5) of electric conductivity in the poling hole, and the efferent duct (6) of electric conductivity detector (9) and input pipe (10) pass from the endoporus of electromagnetic sealing liner (5).
5. the means for anti-jamming of ion chromatograph conductance detecting device according to claim 4, the electrode connecting line (12) that it is characterized in that electric conductivity detector (9) passes from the endoporus of electromagnetic sealing liner (5).
6. according to the means for anti-jamming of claim 4 or 5 described ion chromatograph conductance detecting devices, it is characterized in that the endoporus of electromagnetic sealing liner (5) and efferent duct (6), input pipe (10) and electrode connecting line (12) gap location scribble electrically-conducting paint (11).
7. according to the means for anti-jamming of claim 1 or 3 described ion chromatograph conductance detecting devices, the sheet metal that it is characterized in that the metal shell layer (4) of the metal shell layer (2) of high permeability and low-resistivity is connected seam crossing and is coated with electrically-conducting paint (11).
8. the means for anti-jamming of ion chromatograph conductance detecting device according to claim 5 is characterized in that electrode connecting line (12) parcel screen layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201063387U CN202033336U (en) | 2011-03-31 | 2011-03-31 | Anti-interference device of ion chromatography electric conductivity detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201063387U CN202033336U (en) | 2011-03-31 | 2011-03-31 | Anti-interference device of ion chromatography electric conductivity detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033336U true CN202033336U (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201063387U Expired - Fee Related CN202033336U (en) | 2011-03-31 | 2011-03-31 | Anti-interference device of ion chromatography electric conductivity detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033336U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854275A (en) * | 2012-07-29 | 2013-01-02 | 安徽皖仪科技股份有限公司 | Ion chromatography digital conductance detecting device based on digital signal processor (DSP) |
| CN107820384A (en) * | 2017-11-13 | 2018-03-20 | 戴承萍 | A kind of isolation structure of wave filter and wave filter |
| CN112213434A (en) * | 2019-07-11 | 2021-01-12 | 株式会社岛津制作所 | Analysis device |
-
2011
- 2011-03-31 CN CN2011201063387U patent/CN202033336U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854275A (en) * | 2012-07-29 | 2013-01-02 | 安徽皖仪科技股份有限公司 | Ion chromatography digital conductance detecting device based on digital signal processor (DSP) |
| CN102854275B (en) * | 2012-07-29 | 2014-11-12 | 安徽皖仪科技股份有限公司 | Ion chromatography digital conductance detecting device based on digital signal processor (DSP) |
| CN107820384A (en) * | 2017-11-13 | 2018-03-20 | 戴承萍 | A kind of isolation structure of wave filter and wave filter |
| CN112213434A (en) * | 2019-07-11 | 2021-01-12 | 株式会社岛津制作所 | Analysis device |
| CN112213434B (en) * | 2019-07-11 | 2023-06-09 | 株式会社岛津制作所 | Analysis device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Jun Inventor after: Lin Zhenqiang Inventor after: Xu Aihua Inventor before: Wang Jun Inventor before: Lin Zhenqiang Inventor before: Ji Aihua |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG JUN LIN ZHENQIANG JI AIHUA TO: WANG JUN LIN ZHENQIANG XU AIHUA |
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| 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: 20111109 Termination date: 20200331 |