CN102978651B - Oxygen standard gas generator - Google Patents
Oxygen standard gas generator Download PDFInfo
- Publication number
- CN102978651B CN102978651B CN201210529831.9A CN201210529831A CN102978651B CN 102978651 B CN102978651 B CN 102978651B CN 201210529831 A CN201210529831 A CN 201210529831A CN 102978651 B CN102978651 B CN 102978651B
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- Prior art keywords
- oxygen
- carrier gas
- gas
- standard
- enters
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000001301 oxygen Substances 0.000 title claims abstract description 76
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 76
- 239000007789 gas Substances 0.000 title claims abstract description 52
- 239000012159 carrier gas Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 3
- 230000004907 flux Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 230000000873 masking effect Effects 0.000 claims description 2
- 238000006392 deoxygenation reaction Methods 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000012795 verification Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Sampling And Sample Adjustment (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides an oxygen standard gas generator. The oxygen standard gas generator is used for generating quantitative oxygen in a carrier gas through an electrolytic process and preparing oxygen in a standard amount in the carrier gas. Before the carrier gas enters an electrolytic cell, humidification is performed through a humidifier, so that the required electrolytic oxygen is obtained through electrolysis; and before the carrier gas enters the humidifier, the carrier gas passes through a deoxygenation tube connected with a four-way valve, so that oxygen-free zero grade gas is prepared. Oxygen standard gas is not required to be generated, and the deoxygenation tube is closed through the four-way valve, so that the phenomenon that a deoxidizing agent is influenced by oxygen in air so as to be rapidly ineffective is avoided. A carrier gas flowmeter is a mass flowmeter which transmits a digital signal; bottled high-pressure carrier gas is stabilized by a washing type depressurization stabilizer and enters a gas circuit; after the carrier gas flow and electrolytic oxygen are treated by an intelligent circuit, the standard gas oxygen content is directly displayed by a touch screen; and moreover, the electrolytic cell for generating oxygen is in an inner winding or outer winding form, and the electrolyte is phosphoric acid coating solution. The instrument is rapid, accurate, high in output pressure and high in flow and can optionally regulate the content in a set range.
Description
Technical field
The present invention relates to a kind of micro amount of oxygen Standard Gases generator, the oxygen Standard Gases that instrument produces, as gas ingredients metering primary standard, be widely used in verification various micro amount of oxygen detecting instrument instrument, check the check data of various Traces of Oxygen in Gases.
Background technology
Micro amount of oxygen Standard Gases is widely used in each industrial gasses manufacturer and numerous gas consumer, be verification lot of trace oxygen detection instruments and meters, check the check data of various Traces of Oxygen in Gases content, ensure the indispensable mete-wand material of gas sample detected result accurate reliability.Therefore the accuracy of Standard Gases just decides by tester instrument with by the final order of accuarcy of the quality detecting data checked.
Recent decades, as the primary standard of micro amount of oxygen, most user all adopts bottled Standard Gases.According to by the instrument verified, by different range and linear requirements, the high, medium and low three kinds of content of general needs are as standing.
Bottled micro amount of oxygen Standard Gases, generally acknowledging it is weighting method the most accurately at present, is secondly volume by weight method.During weighting method preparation micro amount of oxygen, because needs repeatedly dilute, and all operate in air ambient, so very empty easy introducing preparation error.Thus for many years, the bottled Standard Gases of gas market circulation, its order of accuarcy is uneven.In addition, the detection perform of many instruments is good not in specialized range internal linear, sometimes even very poor.When detecting different oxygen, be easy to produce larger metrical error.Eliminating error best bet is the Standard Gases adopting identical as far as possible with the oxygen level of tested gas (or close).This is difficult to obtain for instrument user, because each bottle of bottled Standard Gases bought only has a kind of content.Above-mentioned phenomenon still could not be resolved for many years so far.
Summary of the invention
The present invention is directed to the reality need of micro amount of oxygen Standard Gases, and micro amount of oxygen detecting instrument, instrument check in industrial gasses, micro amount of oxygen detects the demand of verification of data, provides the oxygen Standard Gases generator that a kind of electrolytic process produces oxygen.In 0-200ppmv and 600-700ppmv content range, can there is the oxygen Standard Gases of arbitrary content in instrument, both easy, quick, again accurately and reliably.
A kind of oxygen Standard Gases generator, produce quantitative oxygen by electrolytic process and be evenly distributed in the carrier gas of at the uniform velocity flowing, make oxygen part of carrier gas Plays amount, oxygen level adopts volume ratio ppmv unit.
Carrier gas is first humidified through humidifier, to provide electrolysis necessary moisture content before entering electrolyzer.
Before carrier gas enters humidifier, first through deoxidation pipe, to produce anaerobic zero gas.
Deoxygenator is connected with conical surface four-way valve, does not need oxygen Standard Gases occurs, and during not deoxidation, four-way valve, by deoxidation duct occlusion, comparatively fast lost efficacy to make the unlikely impact by oxygen in air of reductor.
Carrier gas stream gauge adopts the mass flowmeter of transmission of digital signals.
Before mass flowmeter is arranged on deoxygenator, make, just in case when under meter occurs that atmospheric oxygen is micro-and oozes, can be removed by deoxygenator thereafter, to ensure the quality of anaerobic zero gas.
Bottled high pressure carrier gas, after row washes the voltage stabilizing of formula pressure-reduced and-regulated device, enters gas circuit.The operating pressure of setting generator is 0.3-0.5MPa.
Carrier gas flux and electrolysis oxygen are by after intelligent circuit process, and its Standard Gases oxygen level is directly shown by touch-screen.
Touch the various test item of screen display, and correlation parameter.Which project finger taps, and which destination data can show in redirect.
The electrolyzer producing oxygen adopts interior around formula or externally-wound type, and electrolytic solution is phosphoric acid masking liquid.
Generator oxygen amount producer principle of work is:
When the carrier gas (as nitrogen) of water content flows through with certain flow the electrolyzer producing accurate oxygen amount, in electrolyzer outlet, oxygen in the nitrogen of corresponding content (ppmv) can be obtained, record nitrogen flow and electrolysis oxygen amount, the content of oxygen in nitrogen can be determined.
The generation of normal content oxygen adopts electrolytic process, and its reactional equation is as follows:
When carrier gas flux is 200mL/min, by Faraday's law and equation of gaseous state, during water electrolysis, often produce the oxygen of 1ppmv, its corresponding Faradaic current is 53.6 μ A.Therefore, measure Faradaic current, namely know oxygen level.Thus regulate Faradaic current, different oxygen levels can be obtained.
Only need operate by setup program, regulate electric current content, accurately 600-700 can occur, oxygen in the nitrogen within the scope of 0-200ppmv.
Micro amount of oxygen Standard Gases generator is done at once for domestic needs.It adopts electrolysis to produce oxygen, and the metering of oxygen is the electric current metering based on Faraday's law, very accurately.The metering of carrier gas flux adopts the mass flowmeter of transmission of digital signals, accurately credible.Oxygen amount and carrier gas flux, by the process of intelligent equipment circuit counting, directly show Standard Gases oxygen level by touch-screen.
In using, after carrier gas flux is set up, only need regulate Faradaic current, the arbitrary oxygen level in specialized range can occur rapidly, its easy, quick and accuracy, bottled Standard Gases cannot be compared.
Such as, make a checking curve that 5 points are above, bottled Standard Gases needs more than 5 bottles, all must reconnect, arranges and wash and Flow-rate adjustment during every bottle of use, is also difficult to exempt atmospheric pollution and causes data error.Adopt oxygen Standard Gases generator, only need transfer Faradaic current, a checkpoint can be completed in two minutes, even if need multiple spot to verify, also must not change source of the gas, but and each operate continuously.Operating process can not introduce pollution, causes error, and verification is not only quick but also accurate.Applying of oxygen Standard Gases generator, thus, make the verification difficult problem existed for many years obtain satisfactory solution.
Below in conjunction with accompanying drawing, again foregoing of the present invention is described in further detail by the embodiment of embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following examples.Without departing from the idea case in the present invention described above, the various replacement made according to ordinary skill knowledge and customary means or change, all should be included in protection scope of the present invention.
Accompanying drawing explanation
Fig. 1 is the process of gas path figure of oxygen Standard Gases generator of the present invention.
Embodiment
Embodiment
Standard oxygen amount generator, its bottled high pressure carrier gas 1, washes formula pressure-reduced and-regulated device 2 through row, and decompression and voltage stabilizing are after 0.5MPa, enter mass flowmeter 3, carry out flow metering.Then through conical surface four-way valve 4, enter deoxygenator 5, remove micro amount of oxygen contained in carrier gas, generate anaerobic zero gas.Zero gas adds after appropriate moisture content through humidity generator 6, enters electrolyzer 7 electrolysis, produces oxygen.Then, through Drazin inverse valve 8 set flow be 200mL/min.Finally, dock with by school instrument entrance through output switch valve 9 and output interface 10, carry out instrument verification.When needing different oxygen levels, only need transfer the Faradaic current setter on panel, and checking the oxygen level value on display screen, required oxygen level can be obtained rapidly.After having verified, first rotary four-way valve, makes deoxygenator be in closed state.Then, turn switch valve 9, turns off gas, stops exporting.Turn off electrolysis power, to interrupt the generation of oxygen amount simultaneously.If do not re-use oxygen Standard Gases in the long period, then should close the cylinder valve of carrier gas bottle, cut off source of the gas.
Operate by setup program, accurately 600-700 can occur, oxygen in the nitrogen within the scope of 0-200ppmv.This instrument trait: easy and simple to handle, occur fast, oxygen level is accurate, output pressure is high, flow is large.In setting range, content can be set up arbitrarily.The user demand of the most of user in trace detection field can be met.
Claims (1)
1. an oxygen Standard Gases generator, produces quantitative oxygen in carrier gas by electrolytic process, makes oxygen part of carrier gas Plays amount, it is characterized in that: bottled high pressure carrier gas, after row washes the voltage stabilizing of formula pressure-reduced and-regulated device, enters gas circuit; Before carrier gas enters electrolyzer, first through humidifier humidification, the electrolysis oxygen needed for obtaining with electrolysis; Before carrier gas enters humidifier, first through deoxidation pipe, to produce anaerobic zero gas; Deoxygenator is connected with four-way valve, does not need oxygen Standard Gases occurs, and during not deoxidation, four-way valve, by deoxidation duct occlusion, comparatively fast lost efficacy to make the unlikely impact by oxygen in air of reductor; Carrier gas stream gauge adopts the mass flowmeter of transmission of digital signals; Carrier gas flux and electrolysis oxygen are by after intelligent circuit process, and its Standard Gases oxygen level is directly shown by touch-screen; The electrolyzer producing oxygen is interior around formula or externally-wound type, and electrolytic solution is phosphoric acid masking liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529831.9A CN102978651B (en) | 2012-12-11 | 2012-12-11 | Oxygen standard gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529831.9A CN102978651B (en) | 2012-12-11 | 2012-12-11 | Oxygen standard gas generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102978651A CN102978651A (en) | 2013-03-20 |
| CN102978651B true CN102978651B (en) | 2015-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210529831.9A Active CN102978651B (en) | 2012-12-11 | 2012-12-11 | Oxygen standard gas generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN102978651B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343357A (en) * | 2013-06-28 | 2013-10-09 | 袁万德 | Water standard gas generation instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668187Y (en) * | 2003-09-24 | 2005-01-05 | 牛卫华 | Adjustable low-oxygen instrument |
| CN101181977A (en) * | 2007-11-23 | 2008-05-21 | 中国计量科学研究院 | Ozone standard gas generating apparatus |
| CN101757747A (en) * | 2010-01-14 | 2010-06-30 | 西北农林科技大学 | Automatic oxygen generator |
-
2012
- 2012-12-11 CN CN201210529831.9A patent/CN102978651B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668187Y (en) * | 2003-09-24 | 2005-01-05 | 牛卫华 | Adjustable low-oxygen instrument |
| CN101181977A (en) * | 2007-11-23 | 2008-05-21 | 中国计量科学研究院 | Ozone standard gas generating apparatus |
| CN101757747A (en) * | 2010-01-14 | 2010-06-30 | 西北农林科技大学 | Automatic oxygen generator |
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| Publication number | Publication date |
|---|---|
| CN102978651A (en) | 2013-03-20 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20170801 Address after: 401331 Shapingba University District, Chongqing City Road, No. 20 Patentee after: Chongqing Zhongke Analytical Instrument Co., Ltd. Address before: 610213 Sichuan city of Chengdu province Shuangliu County Huangjia Shuanghua industrial community two Street No. 70 Patentee before: Yuan Wande |