CN105403671A - Calibration device for gas concentration detection instrument - Google Patents
Calibration device for gas concentration detection instrument Download PDFInfo
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- CN105403671A CN105403671A CN201510821902.6A CN201510821902A CN105403671A CN 105403671 A CN105403671 A CN 105403671A CN 201510821902 A CN201510821902 A CN 201510821902A CN 105403671 A CN105403671 A CN 105403671A
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- cavity
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- gas
- caliberating device
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Abstract
The invention discloses a calibration device for a gas concentration detection instrument. The calibration device comprises support frames, a vacuum cavity, a cavity cover plate, a sealing ring, a vacuum punch-through electrode, an inflation valve, an extraction valve and a monitoring instrument, wherein the vacuum cavity is supported and fixed by the support frame; the cavity cover plate is connected with the vacuum cavity through bolts; the sealing ring is arranged between the cavity cover plate and the vacuum cavity; the vacuum punch-through electrode is embedded in the cavity cover plate; a demountable transition plate is mounted on the inner side of the cover plate. The calibration device for the gas concentration detection instrument, disclosed by the invention, can realize power supply and signal transmission between the inner part and the outer part of the cavity, meanwhile, guarantees the gas tightness of the calibration device and reliability of gas concentration calibration, and is suitable for calibration of various gas sensors and concentration detection instruments, convenient to mount and dismount, simple in structure and good in mechanical strength.
Description
Technical field
The present invention relates to a kind of caliberating device of gas concentration detector, particularly a kind of caliberating device being applicable to gas concentration detection apparatus and sensor.
Background technology
At present, gas concentration detects and is widely used in the various fields such as combustion gas, oil, chemical industry, metallurgy, electric power, Air Quality Analysis, has just emerged in large numbers a large amount of gas sensors and gas concentration detection apparatus thus.But at some application (as: SF in transformer station
6reveal, some harmful gas content etc. in environmental protection tests) require very high to the accuracy of detection of gas detecting instrument, reach ppm (1,000,000/volume fraction) level.This requires that gas sensor or concentration detection apparatus carry out concentration calibration before use, to improve the reliability of data measured.So-called demarcation, mean that " value produced using a kind of high precision apparatus is as the standard input of tolerance in instrument to be calibrated or sensor; obtain the size of its output quantity, determine the input-output relation of instrument or measuring system thus, give instrument or measuring system scale division value." for the demarcation of gas sensor and concentration detection apparatus, just using the calibrating gas of variable concentrations as standard input, detect under sensor to be measured or concentration detection apparatus being placed in this calibrating gas environment, obtain the output quantity measured by it.
But, when detecting high-precision gas concentration, need strict sealing property.For many gas concentration detection apparatus, the temperature, flow, pressure etc. of gas to be measured all have a significant impact measurement result.At present, existing Demarcate Gas device, only adopt seal and the joining place of bonding jelly sticker, sealing effectiveness is poor, and detecting for light concentration gas has very large limitation.In addition, existing Demarcate Gas device seldom carries the detection parts such as temperature, pressure, gas flow, makes the calibration results validity and precision have impact to a certain degree.
Summary of the invention
For the deficiency existing for above-mentioned existing Demarcate Gas device.The invention provides a kind of new Demarcate Gas device, solve sealing difference, the problem of the factor impacts such as temperature, pressure, gas flow.
As follows for realizing the technical scheme that object of the present invention adopts:
A kind of caliberating device of gas concentration detector, it is characterized in that, comprise bracing frame, vacuum cavity, cavity cover plate, O-ring seal, vacuum through-electrode, gas filling valve, extraction valve and measuring instrument, described vacuum cavity is supported fixing by bracing frame, cavity cover plate is connected by bolt with vacuum cavity, O-ring seal is provided with, the embedded vacuum through-electrode of described cavity cover plate between cavity cover plate and vacuum cavity.
Further, inside described cover plate, detachable rebound is installed.Fix to facilitate the installation of sensor and pick-up unit.
Further, described cavity and cover plate materials all adopt 304 stainless steels.
Further, vacuum cavity inside scribbles teflon, reduces gas absorption.
Further, described vacuum through-electrode is 19 pin binding posts.
Further, described charging valve is T-valve, wherein one end ventilation, and one end connects cavity, and one end connects gas meter.
Further, described extraction valve is two-way valve.
Further, described measuring instrument comprises thermometer, gas meter, tensimeter.
The invention has the beneficial effects as follows, cavity cover plate of the present invention is embedded with vacuum through-electrode, and described vacuum through-electrode is wherein embedded by binding post, can realize the impermeability that power supply between inside cavity outside and Signal transmissions ensure that caliberating device simultaneously.Be provided with inside cover plate and for the rebound of dismounting, can fix to facilitate the installation of sensor and pick-up unit.Be provided with O-ring seal between cavity cover plate and vacuum cavity, ensure that the sealing of caliberating device.Described measuring instrument can the data such as Real-Time Monitoring temperature, pressure, gas flow, and ensure the reliability that gas concentration is demarcated, the present invention can be applicable to the demarcation of multiple gases sensor and concentration detector, easy installation and removal, and structure is simple, and physical strength is good.
Accompanying drawing explanation
Fig. 1 is the overall schematic of the preferred embodiments of the present invention.
Fig. 2 is the front view of the preferred embodiments of the present invention.
Fig. 3 is the right view of the preferred embodiments of the present invention.
Fig. 4 is the vacuum through-electrode schematic diagram of the preferred embodiments of the present invention.
In figure: 1-cavity cover plate, 2-vacuum through-electrode, 3-bracing frame, 4-tensimeter, 5-thermometer, 6-gas filling valve, 7-gas meter, 8-vacuum cavity, 9-extraction valve, the dismountable rebound of 10-, 11-O-ring seal, 12-19 pin binding post.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is overall schematic after the installation of a preferred embodiment of the present invention.Fig. 2 shows the installation site of dismountable rebound (10).Fig. 3 shows the installation situation of cavity cover plate (1) and the installation effect of vacuum through-electrode (2).Fig. 4 is the schematic perspective view of vacuum through-electrode (2), shows that effect is installed in the embedding of 19 pin binding posts (11).
As shown in drawings, vacuum cavity (8) is supported fixing by bracing frame (3).Cavity cover plate (1) and vacuum cavity (8) are connected by 6 symmetrical bolts and reinforce, O-ring seal is provided with between cavity cover plate (1) and vacuum cavity (8), ensure that the impermeability of caliberating device, its material is 304 stainless steels.When cavity cover plate (1) and main cavity connection, dismountable rebound (10) is installed within it.Cavity cover plate (1) is embedded with vacuum through-electrode (2), the power supply of sensor or concentration detector and signal then by 19 pin binding posts (11) transmission in vacuum through-electrode (2), so both ensure that the impermeability of chamber guaranteed effective power supply and Signal transmissions.Vacuum cavity (8) is respectively equipped with for installing gas filling valve (6), extraction valve (9), and tensimeter (4), the interface of thermometer (5), is convenient to their installation and removal.Gas filling valve (6) is T-valve, wherein one end ventilation, and one end connects cavity, and the interface connecting gas meter (7) is left in one end, is convenient to the installing/dismounting of gas meter, the size of this gas filling valve also adjustable charge flow rate.
The course of work of the present invention is as follows, first cavity cover plate (1) is opened, gas concentration sensor or concentration detection apparatus are arranged on the rebound (10) of cavity cover plate (1) inner side, rebound is convenient to dismounting, can according to the position of the size determination mounting hole of sensor.The power lead of sensor or concentration detection apparatus and signal wire are accessed on 19 pin binding posts (12) in vacuum through-electrode (2) respectively, installs cavity cover plate and use bolted.The feeder ear of outside and Signal transmissions end are connected with corresponding binding post respectively, ensure the observation of Power supply and signal.Before starting test, close gas filling valve (6), first connect extraction valve (9) with vacuum pump and vacuumized by cavity, vacuum tightness can be observed by tensimeter (4).Then close extraction valve (11), calibrating gas to be measured is filled with by gas filling valve (6) in chamber.The temperature conditions of environment when the registration of observing thermometer (5) can know measurement.Observe gas meter (7) registration to regulate charge flow rate size, observation tensimeter (4) registration can know gas pressure intensity during measurement, also can control institute's insufflation gas amount thus.After being filled with the calibrating gas of aequum, closing gas filling valve (6) and start test.After test terminates, close gas filling valve (6), connect extraction valve (9) with vacuum pump and vacuumized by vacuum cavity, waste gas is evacuated in gas concentration unit.When changing standard gas concentration detection, repeat said process, observed pressure table (4), thermometer (5) and gas meter (7), the condition controlling calibration process each is consistent.
The foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; allly use within novel spirit and principle at this; to those skilled in the art; do not paying under creationary prerequisite; any amendment of doing, equivalent replacement, improvement etc., within the protection domain that all should be included in invention.
Claims (8)
1. the caliberating device of a gas concentration detector, it is characterized in that, comprise bracing frame, vacuum cavity, cavity cover plate, O-ring seal, vacuum through-electrode, gas filling valve, extraction valve and measuring instrument, described vacuum cavity is supported fixing by bracing frame, cavity cover plate is connected by bolt with vacuum cavity, O-ring seal is provided with, the embedded vacuum through-electrode of described cavity cover plate between cavity cover plate and vacuum cavity.
2. according to caliberating device according to claim 1, it is characterized in that, inside described cover plate, dismountable rebound is installed.
3. according to caliberating device according to claim 1, it is characterized in that, described cavity and cover plate materials all adopt 304 stainless steels.
4. according to caliberating device according to claim 1, it is characterized in that, vacuum cavity inside scribbles teflon.
5. according to caliberating device according to claim 1, it is characterized in that, described vacuum through-electrode is 19 pin binding posts.
6. according to caliberating device according to claim 1, it is characterized in that, described charging valve is T-valve, wherein one end ventilation, and one end connects cavity, and one end connects gas meter.
7. according to caliberating device according to claim 1, it is characterized in that, described extraction valve is two-way valve.
8. according to caliberating device according to claim 1, it is characterized in that, described measuring instrument comprises thermometer, gas meter, tensimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821902.6A CN105403671A (en) | 2015-11-24 | 2015-11-24 | Calibration device for gas concentration detection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821902.6A CN105403671A (en) | 2015-11-24 | 2015-11-24 | Calibration device for gas concentration detection instrument |
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| CN105403671A true CN105403671A (en) | 2016-03-16 |
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| CN201510821902.6A Pending CN105403671A (en) | 2015-11-24 | 2015-11-24 | Calibration device for gas concentration detection instrument |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896195A (en) * | 2017-04-19 | 2017-06-27 | 中国工程物理研究院总体工程研究所 | Assembly type gas sensing caliberating device |
| WO2019037748A1 (en) * | 2017-08-25 | 2019-02-28 | Chow Kam Fu | System and method for calibrating a gas detecting device |
| CN109991370A (en) * | 2019-03-22 | 2019-07-09 | 上海市计量测试技术研究院 | A kind of calibrating installation and method for diffusion type methylene oxide detecting instrument |
| CN110988266A (en) * | 2019-12-10 | 2020-04-10 | 广西电网有限责任公司电力科学研究院 | Testing method for calibration gas |
| CN113687031A (en) * | 2021-08-25 | 2021-11-23 | 成都优蕊光电科技有限公司 | Complex environment testing and calibrating device, system and method for gas sensor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2372331A (en) * | 2001-01-18 | 2002-08-21 | Glenn Frazer Counsell | A mechanism for in situ calibration of pressure sensors in plasma processing systems |
| CN1542412A (en) * | 2003-11-07 | 2004-11-03 | 清华大学 | Low-temperature calibration system for electric vortex displacement sensing device |
| CN101241093A (en) * | 2007-02-07 | 2008-08-13 | 中国科学院微电子研究所 | Gas-sensitive sensor calibration and reliability testing system |
| CN101666670A (en) * | 2009-09-18 | 2010-03-10 | 浙江省计量科学研究院 | Gas flow calibration device based on standard plunger piston |
| CN102707017A (en) * | 2012-06-07 | 2012-10-03 | 中北大学 | Test system for detecting integrity and reliability of gas monitoring system |
| CN104090074A (en) * | 2014-07-08 | 2014-10-08 | 河南汉威电子股份有限公司 | Calibration gas circuit board and gas sensor module calibration device |
| CN204065059U (en) * | 2014-09-03 | 2014-12-31 | 贵州电力试验研究院 | Gas sensor calibration container |
-
2015
- 2015-11-24 CN CN201510821902.6A patent/CN105403671A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2372331A (en) * | 2001-01-18 | 2002-08-21 | Glenn Frazer Counsell | A mechanism for in situ calibration of pressure sensors in plasma processing systems |
| CN1542412A (en) * | 2003-11-07 | 2004-11-03 | 清华大学 | Low-temperature calibration system for electric vortex displacement sensing device |
| CN101241093A (en) * | 2007-02-07 | 2008-08-13 | 中国科学院微电子研究所 | Gas-sensitive sensor calibration and reliability testing system |
| CN101666670A (en) * | 2009-09-18 | 2010-03-10 | 浙江省计量科学研究院 | Gas flow calibration device based on standard plunger piston |
| CN102707017A (en) * | 2012-06-07 | 2012-10-03 | 中北大学 | Test system for detecting integrity and reliability of gas monitoring system |
| CN104090074A (en) * | 2014-07-08 | 2014-10-08 | 河南汉威电子股份有限公司 | Calibration gas circuit board and gas sensor module calibration device |
| CN204065059U (en) * | 2014-09-03 | 2014-12-31 | 贵州电力试验研究院 | Gas sensor calibration container |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896195A (en) * | 2017-04-19 | 2017-06-27 | 中国工程物理研究院总体工程研究所 | Assembly type gas sensing caliberating device |
| WO2019037748A1 (en) * | 2017-08-25 | 2019-02-28 | Chow Kam Fu | System and method for calibrating a gas detecting device |
| CN109991370A (en) * | 2019-03-22 | 2019-07-09 | 上海市计量测试技术研究院 | A kind of calibrating installation and method for diffusion type methylene oxide detecting instrument |
| CN110988266A (en) * | 2019-12-10 | 2020-04-10 | 广西电网有限责任公司电力科学研究院 | Testing method for calibration gas |
| CN113687031A (en) * | 2021-08-25 | 2021-11-23 | 成都优蕊光电科技有限公司 | Complex environment testing and calibrating device, system and method for gas sensor |
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Application publication date: 20160316 |