CN101059468A - Gas sensor - Google Patents
Gas sensor Download PDFInfo
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- CN101059468A CN101059468A CN 200710054448 CN200710054448A CN101059468A CN 101059468 A CN101059468 A CN 101059468A CN 200710054448 CN200710054448 CN 200710054448 CN 200710054448 A CN200710054448 A CN 200710054448A CN 101059468 A CN101059468 A CN 101059468A
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- gas sensor
- catalytic combustion
- combustion method
- infrared
- burning type
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Abstract
The invention relates to a gas sensor, comprising a catalysis burning type gas sensor and an infrared detector, wherein the side part of the catalysis burning type gas sensor is sealed connected with one end of the tube, an infrared detect element of the infrared detector is sealed connected with another end of the tube, the catalysis burning type gas sensor can burn flammable gas, and when the gas density is different, the radiated heat is different, the infrared detector detects the heat change of the catalysis burning type gas sensor to detect the gas density, and the catalysis burning type gas sensor is sealed in an air room, without directly contacting outer space, to reduce the effect of outer temperature on the gas density detected by the infrared detector, and since the path between the catalysis burning type gas sensor and the infrared detector is sealed, the invention can avoid the interference of dust, micro water balls, or other micro liquid balls on the infrared detection, to work at complex condition.
Description
Technical field
The present invention relates to a kind of gas sensor, the especially a kind of gas sensor that can under rugged surroundings, work.
Background technology
Catalytic combustion method gas sensor commonly used at present is a thermal effect principle of utilizing catalytic combustion, constitute measuring bridge by detecting element and compensating element, pairing, when running into inflammable gas, inflammable gas burns under the effect of detecting element carrier surface and catalyzer, bed temperature just raises, combustable gas concentration is high more, bed temperature is also just high more, by the also corresponding rising of the platinum filament resistance of carrier inside, thereby make the balanced bridge out of trim, export an electric signal that is directly proportional with bed temperature and combustable gas concentration.
This catalytic combustion method gas sensor is when work, because detecting element is directly exposed in the surrounding environment, and catalytic combustion method gas sensor not only will make inflammable gas burn in the above but also wants the concentration of detected gas, so the temperature around the detecting element is too high or cross the result of use that all can influence catalytic combustion method gas sensor when low, even catalytic combustion method gas sensor can not normally be used, dust, little globule or other the little liquid pearl around the detecting element also can be influential to the operate as normal of detecting element simultaneously.
Summary of the invention
The objective of the invention is at the existing in prior technology deficiency, a kind of gas sensor that can work under rugged surroundings is provided.
For achieving the above object, the invention provides a kind of gas sensor, comprise catalytic combustion method gas sensor and infrared eye, the airtight connection of one end of the sidepiece of described catalytic combustion method gas sensor and body, the infrared detector cell of described infrared eye is connected with the other end of body is airtight.
Inflammable gas enters air chamber by the air admission hole of air chamber during work, and burns on catalytic combustion method gas sensor, and the infrared light intensity of radiation in body realized the detection to gas concentration when infrared eye burnt by surveying inflammable gas.
Adopt the present invention of said structure, catalytic combustion method gas sensor is used to make the inflammable gas burning, the concentration of gas is not simultaneously, the burning heat of emitting is different, but by infrared eye survey catalytic combustion method gas sensor exothermic variation realize detection to gas concentration, catalytic combustion method gas sensor is encapsulated in the air chamber simultaneously, directly do not contact with the external world, this has significantly reduced the influence of ambient temperature to infrared eye probe gas concentration, simultaneously owing to an end airtight be connected of catalytic combustion method gas sensor with body, the infrared detector cell of infrared eye is connected with the other end of body is airtight, light path between catalytic combustion method gas sensor and the infrared eye is airtight, therefore do not need to consider such as dust, little globule, or other little liquid pearl can more worked in the complex environment to the interference of infrared acquisition.
Also in conjunction with the accompanying drawings the present invention is described in further detail below by specific embodiment.
Description of drawings
Fig. 1 is the structural representation of gas sensor specific embodiment one of the present invention;
Fig. 2 is the structural representation of gas sensor specific embodiment two of the present invention.
Description of reference numerals: 1. catalytic combustion method gas sensor, 2. infrared eye, 3. body, 4. air chamber.
Embodiment
Fig. 1 is the structural representation of gas sensor specific embodiment one of the present invention, as shown in Figure 1, comprise catalytic combustion method gas sensor 1 and infrared eye 2, the airtight connection of one end of the sidepiece of described catalytic combustion method gas sensor 1 and body 3, the infrared detector cell (not shown) of described infrared eye 2 is connected with the other end of body 3 is airtight.
Inflammable gas enters air chamber 4 by the air admission hole of air chamber 4 during work, and burning on catalytic combustion method gas sensor 1, and the infrared light intensity of radiation in body 3 realized the detection to gas concentration when infrared eye 2 burnt by surveying inflammable gas.
Adopt the present invention of said structure, catalytic combustion method gas sensor 1 is used to make the inflammable gas burning, itself is the concentration of probe gas not, but realize detection to gas concentration by infrared eye 2, catalytic combustion method gas sensor 1 is encapsulated in the air chamber 4 simultaneously, directly do not contact with the external world, this has significantly reduced the influence of ambient temperature to infrared eye 2 probe gas concentration, simultaneously owing to an end airtight be connected of catalytic combustion method gas sensor 1 with body 3, the infrared detector cell of infrared eye 2 is connected with the other end of body 3 is airtight, light path between catalytic combustion method gas sensor 1 and the infrared eye 2 is airtight, therefore do not need to consider such as dust, little globule, or other little liquid pearl can more worked in the complex environment to the interference of infrared acquisition.
Fig. 2 is the structural representation of gas sensor specific embodiment two of the present invention, this embodiment also is provided with the air chamber 3 with explosion prevention function on the basis of embodiment one, described catalytic combustion method gas sensor 1, infrared eye 2 and body 3 are arranged in the described air chamber 4, will be as shown in Figure 2, described catalytic combustion method gas sensor 1 is a column, do not comprise compensating element,, described infrared eye 2 is a thermoelectric pile formula infrared eye.
Present embodiment is except that the advantage with embodiment one, because catalytic combustion method gas sensor 1 does not comprise compensating element,, the detection interference that gas burns on compensating element, and causes when having avoided catalytic combustion method gas sensor 1 work, because the outside is provided with the air chamber 3 with explosion prevention function, make the gas sensor in the present embodiment safer simultaneously.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (4)
1, a kind of gas sensor, it is characterized in that comprising catalytic combustion method gas sensor (1) and infrared eye (2), the airtight connection of one end of the sidepiece of described catalytic combustion method gas sensor (1) and body (3), the airtight connection of the other end of the infrared detector cell of described infrared eye (2) and body (3).
2, gas sensor according to claim 1 is characterized in that described catalytic combustion method gas sensor (1) is column or sheet.
3, gas sensor according to claim 1, it is characterized in that described gas sensor also comprises the air chamber (4) with explosion prevention function, described catalytic combustion method gas sensor (1), described infrared eye (2) and described body (3) are arranged in the described air chamber (4).
4, gas sensor according to claim 1 is characterized in that described infrared eye (2) is thermoelectric pile formula infrared eye or pyroelectricity formula infrared eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710054448A CN100588961C (en) | 2007-05-29 | 2007-05-29 | Gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710054448A CN100588961C (en) | 2007-05-29 | 2007-05-29 | Gas sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101059468A true CN101059468A (en) | 2007-10-24 |
| CN100588961C CN100588961C (en) | 2010-02-10 |
Family
ID=38865686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710054448A Active CN100588961C (en) | 2007-05-29 | 2007-05-29 | Gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100588961C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825566A (en) * | 2010-03-24 | 2010-09-08 | 郑州炜盛电子科技有限公司 | High resolution infrared gas sensor |
| CN102495019A (en) * | 2011-11-22 | 2012-06-13 | 河南汉威电子股份有限公司 | Variable wavelength as infrared sensor |
| CN108931477A (en) * | 2017-05-24 | 2018-12-04 | 天源华威集团有限公司 | A kind of on-dispersive high sensitivity infrared gas sensor |
| CN112270812A (en) * | 2020-10-28 | 2021-01-26 | 广州研测安全技术有限公司 | Alarm for detecting combustible gas |
| CN113405864A (en) * | 2021-06-30 | 2021-09-17 | 中科泰检测(江苏)有限公司 | Gas detection device for environment detection |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4803052A (en) * | 1982-09-30 | 1989-02-07 | The Babcock & Wilcox Company | Carbon monoxide detector |
| EP0529000B1 (en) * | 1990-06-12 | 1996-02-21 | Catalytica Inc. | NOx SENSOR ASSEMBLY |
| CN1333246C (en) * | 2000-06-05 | 2007-08-22 | 松下电器产业株式会社 | Gas concentration sensor, hydrogen purification unit using this and cell system |
-
2007
- 2007-05-29 CN CN200710054448A patent/CN100588961C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825566A (en) * | 2010-03-24 | 2010-09-08 | 郑州炜盛电子科技有限公司 | High resolution infrared gas sensor |
| CN101825566B (en) * | 2010-03-24 | 2011-09-14 | 郑州炜盛电子科技有限公司 | High resolution infrared gas sensor |
| CN102495019A (en) * | 2011-11-22 | 2012-06-13 | 河南汉威电子股份有限公司 | Variable wavelength as infrared sensor |
| CN108931477A (en) * | 2017-05-24 | 2018-12-04 | 天源华威集团有限公司 | A kind of on-dispersive high sensitivity infrared gas sensor |
| CN112270812A (en) * | 2020-10-28 | 2021-01-26 | 广州研测安全技术有限公司 | Alarm for detecting combustible gas |
| CN112270812B (en) * | 2020-10-28 | 2022-04-05 | 广州研测安全技术有限公司 | Alarm for detecting combustible gas |
| CN113405864A (en) * | 2021-06-30 | 2021-09-17 | 中科泰检测(江苏)有限公司 | Gas detection device for environment detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100588961C (en) | 2010-02-10 |
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