CN201075097Y - Argon discharging detecting device - Google Patents
Argon discharging detecting device Download PDFInfo
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- CN201075097Y CN201075097Y CNU2007200137349U CN200720013734U CN201075097Y CN 201075097 Y CN201075097 Y CN 201075097Y CN U2007200137349 U CNU2007200137349 U CN U2007200137349U CN 200720013734 U CN200720013734 U CN 200720013734U CN 201075097 Y CN201075097 Y CN 201075097Y
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- detection device
- photoelectric sensor
- chromatographic column
- argon gas
- pond body
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model discloses an argon discharging detection device; wherein, the detection device comprises a tank body, a detection chamber, a photoelectric sensor, an analyser and a chromatographic column; the tank body is internally provided with the detection chamber which consists of a narrow passage; the two ends of the detection chamber are provided with an anode electrode and a cathode electrode; the two ends are provided with an air inlet end and an air outlet end at the same time; the air inlet end is connected with the chromatographic column; the photoelectric sensor is arranged on the anode electrode and/or the cathode electrode; when in use, gas is injected into the air inlet end by the chromatographic column; meanwhile, high-voltage is added between the two electrodes to generate photons which are collected through the photoelectric sensor, converted into current signals and transmitted into the analyser for the analysis of the collected signal. The detection of the detection device has the advantages of high sensitiveness, wide linear range, no radioactive source, no environmental pollution, etc., and the utility model effectively solves current situation that the detection device depends on import, implements independent intellectual property right, being suitable for wide generalization in high-purity argon analysis field.
Description
Technical field
The utility model relates to a kind of Analysis of Gases of High Purity instrument, relates in particular to a kind of gas chromatography high-sensitivity detection device that utilizes the high-voltage glow-discharge principle.
Background technology
At present, domestic high-purity gas refers generally to the gas of purity 〉=99.999% (being the 5N level), and all kinds of high-purity gas all have corresponding national standards that its impurity content is limited.As high-purity argon GB (GB/T10624-1995) regulation nitrogen≤5PPm, oxygen≤2PPm, hydrogen≤1PPm, total carbon (with methanometer)≤2PPm, water≤3PPm; High purity nitrogen (GB/T8980-1996), high-pure helium (GB/T4844-1995) etc. also all have corresponding foreign impurity matters test item, its impurity to limit the quantity of all in the PPm level.
The Analysis of Gases of High Purity instrument is initially has radioactive helium ionization detector (HID) and argon ionization detector (AID).The rare gas of discovery such as nineteen fifty-five Jesse are under the constant x radiation x entirely, and certain ion flow is arranged, and after trace impurity gas adds, ion flow will increase.Lovelock in 1958 has utilized this consequence devised AID.The sensitivity of AID is very high, but can only detect the compound of ionization potential less than 11.7eV.Nineteen sixty Berry uses HID first, and later ionization source changes beta-ray radiator into from α-ray, and the pond volume reduces back 100～200 μ l gradually from about 1mL and becomes one of widely used gas chromatography detector.But no matter be that AID or HID all have radioactive source, easily contaminated, and can damage environment, more the operator is caused the injury of the person.
Analysis of Gases of High Purity is an important topic in the national economic development always, because the Analysis of Gases of High Purity instrument has only been arranged, just can produce high-purity gas.High purity inert gas, particularly high-purity argon gas be at chemical industry, electronics, and fields such as metallurgy are extremely important and be badly in need of very much, and market demand is still very big.Solve these problems so be badly in need of a kind of appearance of new Analysis of Gases of High Purity instrument.
Summary of the invention
The utility model is at the deficiencies in the prior art, develop a kind of principle of utilizing high-purity argon gas to issue the light discharge that blazes in the high pressure effect, and the chromatography with discharge ionization detector of design, effectively improved the drawback of traditional handicraft---in radioactive source is arranged, and the purity analysis of argon gas is brought up to nearly 6 " 9 " level promptly 10
-7The technological means that the utility model adopted is as follows:
A kind of argon gas discharging detection device is characterized in that comprising pond body, sensing chamber, photoelectric sensor, analyser and chromatographic column; Be provided with the sensing chamber that narrow gap is formed in the body of described pond, positive electrode and negative electrode are equipped with in the two ends of sensing chamber, are provided with air intake opening and gas outlet simultaneously at two ends; Described air intake opening links to each other with chromatographic column, at positive electrode and/or negative electrode place photoelectric sensor is housed; Chromatographic column exists simultaneously to the inlet end injecting gas during use
Two interpolars add that high tension voltage makes it produce glow discharge, import in the analyser acquired signal is analyzed converting thereof into current signal by photoelectric sensor collection.
Described pond body is a flow cell class pond body.
Pond body volume is that 30-300 microlitre, light path are the 3-50 millimeter.Described positive electrode ground connection, negative electrode inserts the 600v-1400v negative high voltage.Described photoelectric sensor is positioned at the negative electrode place, lower end of pond body.
The utility model utilizes high-purity argon gas to issue the principle of the light discharge that blazes in the high-tension electricity effect, introduces the analysis of high-purity argon gas.The pond body that argon gas discharging detecting device of the present utility model is a flow cell type, the high-purity argon gas purity of doing carrier gas is the 7N level, makes the various impurity after the chromatographic resolution can obtain detecting in detecting device, detects lower limit and reaches 10
-7This gas chromatograph, the blank of China in the Analysis of Gases of High Purity field will be filled up, a new height is brought up in the sensitivity of existing instrument, particularly substituted the radioactive source that uses on the DHP type instrument with the argon gas discharging technology, make that it is not only highly sensitive, the range of linearity is wide, and do not contain characteristics such as radioactive source, environmentally safe; The chromatograph of this detecting device can satisfy the analysis of domestic argon gas high-class product (5.7N) fully in addition, solves the present situation of also leaning on import at present, realizes independent intellectual property right, is suitable for extensively promoting at the high-purity argon gas analysis field.
Description of drawings
The utility model has a width of cloth accompanying drawing:
Fig. 1 is the structural representation of pick-up unit of the present utility model;
Among the figure: 1, pond body, 2, sensing chamber, 3, air intake opening, 4, the gas outlet, 5, positive electrode, 6, negative electrode, 7, photoelectric sensor, 8, amplifier, 9, chromatographic column.
Embodiment
The pond body 1 that this argon gas discharging detecting device is a flow cell type is provided with the sensing chamber 2 that narrow gap is formed in pond body 1, wherein body volume in pond is that 160 microlitres, light path are 30 millimeters.Positive electrode 5 and negative electrode 6 are equipped with in the two ends of body sensing chamber 2, are provided with air intake opening 3 and gas outlet 4 at two ends, and air intake opening 3 links to each other with chromatographic column 9; Positive electrode 5 ground connection during use, negative electrode 6 inserts 1400 negative high voltages, and photoelectric sensor 7 is positioned at lower end negative electrode 6 places of pond body 1.Concrete operations are as follows: the high-purity argon gas (high-purity argon gas purity is at least the 7N level) that feeds in chromatographic column earlier as carrier gas can obtain detecting in detecting device through the various impurity after the chromatographic resolution like this, detects lower limit and reaches 10
-7Simultaneously add high voltage at two interpolars, high-purity argon gas is in high-voltage electric field, excited meeting to form stable plasma by forceful electric power, they continue to be subjected to the high-tension electricity effect to produce continuous glow discharge, and reach the stable light intensity degree, the back just obtains a constant base current and gives analyser 8 by the effect of photoelectric sensor 7, detects light intensity and whether reaches stable; After stable argon gas to be measured is fed in the chromatographic column 9, with each impurity (as hydrogen, oxygen, nitrogen, methane, carbon monoxide and carbon dioxide) after chromatographic column is separated, enter in the sensing chamber 2 by air intake opening 3, impurity enters sensing chamber will fierce interaction take place with the argon ion of high energy, thereby influence light intensity widely, thereby photocurrent will influence the variation of base current because of the size of impurity introducing amount; Make light signal convert electric signal to by photoelectric sensor 7,, carrying out record analysis simultaneously observing the variation of base current by analyser 8.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.
Claims (5)
1. an argon gas discharging detection device is characterized in that comprising pond body (1), sensing chamber (2), photoelectric sensor (7), analyser (8) and chromatographic column (9); Be provided with the sensing chamber (2) that narrow gap is formed in the described pond body (1), positive electrode (5) and negative electrode (6) are equipped with in the two ends of sensing chamber (2), are provided with air intake opening (3) and gas outlet (4) simultaneously at two ends; Described air intake opening (3) links to each other with chromatographic column (9), locates to be equipped with photoelectric sensor (7) in body lower end, pond (6); Chromatographic column during use (9) feeds gas to air intake opening (3), simultaneously add that at two interpolars high tension voltage makes it produce glow discharge, convert thereof into current signal and import in the analyser (8) acquired signal is analyzed gathering by photoelectric sensor (7).
2. argon gas discharging detection device according to claim 1 is characterized in that described pond body (1) is a flow cell class pond body.
3. argon gas discharging detection device according to claim 1 and 2 is characterized in that pond body volume is that 30-300 microlitre, light path are the 3-50 millimeter.
4. argon gas discharging detection device according to claim 1 is characterized in that described positive electrode (5) ground connection, and negative electrode (6) inserts the 600v-1400v negative high voltage.
5. argon gas discharging detection device according to claim 4 is characterized in that the lower end negative electrode (6) that described photoelectric sensor (7) is positioned at pond body (1) locates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200137349U CN201075097Y (en) | 2007-08-07 | 2007-08-07 | Argon discharging detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200137349U CN201075097Y (en) | 2007-08-07 | 2007-08-07 | Argon discharging detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075097Y true CN201075097Y (en) | 2008-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200137349U Expired - Lifetime CN201075097Y (en) | 2007-08-07 | 2007-08-07 | Argon discharging detecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201075097Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105484B (en) * | 2007-08-07 | 2010-08-18 | 辽宁科瑞色谱技术有限公司 | Argon gas discharging detection device and method |
| CN104897825A (en) * | 2014-03-04 | 2015-09-09 | 株式会社岛津制作所 | Dielectric barrier discharge ionization detector and method for tuning the same |
-
2007
- 2007-08-07 CN CNU2007200137349U patent/CN201075097Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105484B (en) * | 2007-08-07 | 2010-08-18 | 辽宁科瑞色谱技术有限公司 | Argon gas discharging detection device and method |
| CN104897825A (en) * | 2014-03-04 | 2015-09-09 | 株式会社岛津制作所 | Dielectric barrier discharge ionization detector and method for tuning the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080618 Effective date of abandoning: 20070807 |