CN201384945Y - Calibration gas generator - Google Patents
Calibration gas generator Download PDFInfo
- Publication number
- CN201384945Y CN201384945Y CN200920020554U CN200920020554U CN201384945Y CN 201384945 Y CN201384945 Y CN 201384945Y CN 200920020554 U CN200920020554 U CN 200920020554U CN 200920020554 U CN200920020554 U CN 200920020554U CN 201384945 Y CN201384945 Y CN 201384945Y
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- CN
- China
- Prior art keywords
- calibration gas
- calibration
- standard substance
- gas
- gas generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a calibration gas generator, which comprises a background gas inflow tube and a liquid standard substance inflow tube. The calibration gas generator has the following characteristics: in a gasifier, the background gas inflow tube and the liquid standard substance inflow tube are communicated with each other, and are merged and extended out of the gasifier to form a spiral tube, the spiral tube is positioned in a calibration gas homogenization chamber, and the calibration gas homogenization chamber is provided with a calibration gas outlet. The gasifier of the calibration gas generator is a metal body with high heat capacity, the diameter of the internal gas channel is small, the standard substance can be instantly gasified as soon as being injected, and the calibration gas with specific concentration can be accurately prepared. Moreover, the preparation of the calibration gas and the calibration of an analysis meter can be carried out simultaneously, and thereby, the process of storing the calibration gas in a steel cylinder can be dispensed with.
Description
Technical field
The utility model relates to a kind of calibration gas generator, especially for the calibration gas generator of analysis meter sensitivity calibration.
Background technology
In industrial control process or laboratory, analysis meter is carried out the calibration gas of sensitivity calibration and mostly do background with pure nitrogen gas, add the finite concentration standard substance, become gaseous mixture, then this mixed pressure is reduced in the steel cylinder, become calibration gas.But have many standard substances should not make calibrating gas, for example Ye Hua critical pressure is very low, or the material of severe corrosive, can corrode steel cylinder, causes concentration to change, or self unsettled material, is difficult for preserving, or is difficult for the standard substance that obtains etc.
Summary of the invention
The purpose of this utility model is that a kind of calibration gas generator will be provided, and it is gasified totally liquid standard substance, and mixes with nitrogen as background, and the calibrating gas that mixes enters analysis meter and proofreaies and correct its sensitivity.
Calibration gas generator described in the utility model, it comprises background gas inflow pipe, liquid standard substance inflow pipe, it is characterized in that: in a gasification installation, background gas inflow pipe is connected with liquid standard substance inflow pipe, stretch out vapourizing unit after the merging and become spiral coil, spiral coil is located in the calibration gas levelling chamber, and calibration gas levelling chamber is provided with the calibration gas outlet.
Liquid standard substance flows into the fixing card of silicagel pad that the mouth of pipe is provided with silicagel pad and has injection orifice in the gasification installation described in the utility model; There is a precise injection device that is connected with stepper motor to inject liquid standard substance from injection orifice; Be sequentially with needle valve, flowmeter on the background gas inflow pipe; Calibrating gas levelling chamber top is located in the calibration gas outlet.
The beneficial effects of the utility model are that because vapourizing unit is a metallic object that thermal capacitance is very big, the internal gas channel diameter is very little, gasifies immediately in case inject standard substance, can accurately prepare the calibration gas of specific concentrations.And preparation calibration gas and calibration analyte instrument are carried out simultaneously, save the storage process in steel cylinder.
Description of drawings
Fig. 1 is the utility model schematic diagram.
Among the figure: 1. background the GN 2 gas inflow pipe, 2. liquid standard substance inflow pipe, 3. gasification installation, 4. spiral coil, 5. levelling chamber, 6. calibration gas outlet, 7. silicagel pad, 8. injection orifice, 9. fixing card, 10. stepper motor, 11. precise injection devices, 12. needle valves, 13. flowmeters.
The specific embodiment
Calibration gas generator described in the utility model, as shown in Figure 1, it comprises background the GN 2 gas inflow pipe 1, liquid standard substance inflow pipe 2, in a gasification installation 3, background the GN 2 gas inflow pipe 1 is connected with liquid standard substance inflow pipe 2, stretching out vapourizing unit 3 after the merging becomes spiral coil 4, and spiral coil 4 is located in the calibration gas levelling chamber 5, and calibration gas levelling chamber 5 is provided with calibration gas outlet 6.Liquid standard substance flows into the fixing card 9 of silicagel pad that the mouth of pipe is provided with silicagel pad 7 and has injection orifice 8 in the gasification installation 3; There is a precise injection device 11 that is connected with stepper motor 10 to inject liquid standard substance from injection orifice 8; Be sequentially with needle valve 12, flowmeter 13 on the background gas inflow pipe 1; Calibrating gas levelling chamber top is located in calibration gas outlet 6.
During use, nitrogen is fed calibration gas generator, regulate needle valve, make nitrogen be stabilized in metered flow, extract a certain amount of standard substance with the precise injection device, syringe needle is inserted in the injection orifice, silicagel pad, pin can penetrate, and is air tight again, and stepper motor injects vapourizing unit with constant speed with the liquid standard substance in the precise injection device, liquid just is gasificated into gaseous state immediately and mixes with flowing nitrogen, through the mixing of spiral coil and the further homogenizing of levelling chamber, the calibration gas that mixes flows out the sensitivity that enters the analysis meter instrument calibration from the calibration gas outlet at levelling chamber top.Levelling chamber will be controlled at rated temperature, and as the standard specimen of water, temperature is controlled at more than 150 ℃.The utility model will be worked under constant temperature.The utility model is made by stainless steel material.
Claims (5)
1, calibration gas generator, it comprises background gas inflow pipe, liquid standard substance inflow pipe, it is characterized in that: in a gasification installation, background gas inflow pipe is connected with liquid standard substance inflow pipe, stretch out vapourizing unit after the merging and become spiral coil, spiral coil is located in the calibration gas levelling chamber, and calibration gas levelling chamber is provided with the calibration gas outlet.
2, calibration gas generator according to claim 1 is characterized in that: liquid standard substance flows into the fixing card of silicagel pad that the mouth of pipe is provided with silicagel pad and has injection orifice in the gasification installation.
3, calibration gas generator according to claim 1 is characterized in that: have a precise injection device that is connected with stepper motor to inject liquid standard substance from injection orifice.
4, calibration gas generator according to claim 1 is characterized in that: be sequentially with needle valve, flowmeter on the background gas inflow pipe.
5, calibration gas generator according to claim 1 is characterized in that: calibrating gas levelling chamber top is located in the calibration gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920020554U CN201384945Y (en) | 2009-04-14 | 2009-04-14 | Calibration gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920020554U CN201384945Y (en) | 2009-04-14 | 2009-04-14 | Calibration gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201384945Y true CN201384945Y (en) | 2010-01-20 |
Family
ID=41577466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920020554U Expired - Fee Related CN201384945Y (en) | 2009-04-14 | 2009-04-14 | Calibration gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201384945Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172504A (en) * | 2011-01-31 | 2011-09-07 | 中国人民解放军防化指挥工程学院 | Liquid organic atomization and gasification device |
| CN105498640A (en) * | 2015-11-27 | 2016-04-20 | 李圣彭 | Multifunctional standard gas generator |
| CN105527376A (en) * | 2015-11-27 | 2016-04-27 | 李圣彭 | Calibration apparatus for chemical alarm |
| CN107486046A (en) * | 2017-08-31 | 2017-12-19 | 中国计量科学研究院 | High-enriched organics normal mixture body generating means and its application method |
| CN114184446A (en) * | 2021-12-21 | 2022-03-15 | 中国计量科学研究院 | Volatile organic gas standard substance preparation system capable of weighing on line |
-
2009
- 2009-04-14 CN CN200920020554U patent/CN201384945Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172504A (en) * | 2011-01-31 | 2011-09-07 | 中国人民解放军防化指挥工程学院 | Liquid organic atomization and gasification device |
| CN102172504B (en) * | 2011-01-31 | 2013-12-18 | 中国人民解放军防化指挥工程学院 | Liquid organic atomization and gasification device |
| CN105498640A (en) * | 2015-11-27 | 2016-04-20 | 李圣彭 | Multifunctional standard gas generator |
| CN105527376A (en) * | 2015-11-27 | 2016-04-27 | 李圣彭 | Calibration apparatus for chemical alarm |
| CN107486046A (en) * | 2017-08-31 | 2017-12-19 | 中国计量科学研究院 | High-enriched organics normal mixture body generating means and its application method |
| CN107486046B (en) * | 2017-08-31 | 2023-06-30 | 中国计量科学研究院 | High-concentration organic matter standard mixed gas generating device and application method thereof |
| CN114184446A (en) * | 2021-12-21 | 2022-03-15 | 中国计量科学研究院 | Volatile organic gas standard substance preparation system capable of weighing on line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20140414 |