CN211179499U - Waterproof and dustproof device of infrared gas sensor - Google Patents
Waterproof and dustproof device of infrared gas sensor Download PDFInfo
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- CN211179499U CN211179499U CN201922133036.8U CN201922133036U CN211179499U CN 211179499 U CN211179499 U CN 211179499U CN 201922133036 U CN201922133036 U CN 201922133036U CN 211179499 U CN211179499 U CN 211179499U
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- gas sensor
- waterproof
- infrared gas
- dustproof device
- filter element
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 239000000020 Nitrocellulose Substances 0.000 claims abstract description 20
- 229920001220 nitrocellulos Polymers 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 abstract description 14
- 238000001914 filtration Methods 0.000 abstract description 7
- 239000008187 granular material Substances 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses an infrared gas sensor's waterproof dust keeper, it includes: the top of the shell is provided with an upper cover, and a nitrocellulose filter membrane, an activated carbon filter element and a metal sintering filter element are sequentially superposed between the shell and the upper cover from bottom to top; the middle part of the upper cover is provided with a through hole, an upper breathable net for the gas to be filtered to pass through is arranged in the through hole, and a lower breathable net for the filtered gas to pass through is arranged at the bottom of the shell. The utility model provides an infrared gas sensor's waterproof dust keeper, vapor and dust granule thoughtlessly in can effectual filtering await measuring the gas, avoid the vapor to condense and the influence of dust granule enrichment to reflection efficiency in the optical air chamber, play the guard action to the optical air chamber.
Description
Technical Field
The utility model relates to a sensor technical field, concretely relates to infrared gas sensor's waterproof dust keeper.
Background
With the rapid development of the economy of China in recent years, the proportion of industrial gas in the economy of China is higher and higher, and the industrial gas is widely applied to the fields of petroleum, chemical engineering, agriculture, medical treatment, food, clean energy, urban residents and the like. However, the concentration of the industrial gas exceeding the safety allowable range is easy to directly cause safety accidents, so that the effective monitoring of the concentration of the industrial gas is an important means for guaranteeing the gas safety.
The infrared gas sensor realizes concentration detection by utilizing the absorption characteristics of gas molecules on infrared spectrum, has the advantages of large concentration detection range, high sensitivity, strong selectivity, good explosion resistance, poisoning resistance, long service life and the like, and is valued by the field and industry of domestic and foreign industrial gas monitoring. According to the lambert beer law, the performance of the infrared gas sensor is greatly influenced by the optical gas chamber. However, impurities such as water vapor and dust particles entering the optical gas chamber along with the gas to be measured are condensed and accumulated in the reflecting surface of the optical gas chamber, so that the reflecting performance of the optical gas chamber is reduced, and the measurement accuracy of the sensor is reduced or even fails.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a waterproof dust keeper of infrared gas sensor, thoughtlessly vapor and dust granule in can effectual filtering await measuring gas, avoid the vapor to condense and the influence of dust granule enrichment reflection efficiency in to the optical air chamber, play the guard action to the optical air chamber.
The utility model provides a technical scheme that technical problem adopted as follows:
a waterproof and dustproof device of an infrared gas sensor comprises:
the top of the shell is provided with an upper cover, and a nitrocellulose filter membrane, an activated carbon filter element and a metal sintering filter element are sequentially superposed between the shell and the upper cover from bottom to top;
the middle part of the upper cover is provided with a through hole, an upper breathable net for the gas to be filtered to pass through is arranged in the through hole, and a lower breathable net for the filtered gas to pass through is arranged at the bottom of the shell.
Preferably, the cross-section of the shell is H-shaped, and the shell includes a cylindrical side plate and a bottom plate perpendicular to the cylindrical side plate.
Preferably, the bottom plate is arranged in the middle of the cylindrical side plate.
Preferably, the cylindrical side plate is provided with an internal thread connected with the infrared gas sensor at the lower side of the bottom plate.
Preferably, a sealing gasket is arranged between the bottom plate and the internal thread.
Preferably, the nitrocellulose filter membrane, the activated carbon filter element and the metal sintered filter element are all arranged in a disc shape.
Preferably, the diameters of the nitrocellulose filter membrane and the activated carbon filter element are equal to the inner diameter of the cylindrical side plate.
Preferably, the diameter of the metal sintered filter element is equal to the inner diameter of the upper cover, and the metal sintered filter element is positioned in the upper cover.
Preferably, the nitrocellulose filter membrane has a hundred nanometer scale micropore array structure.
Preferably, the nitric acid fiber filtering membrane is a hydrophilic nitric acid fiber filtering membrane.
Compared with the prior art, the utility model provides an infrared gas sensor's waterproof dust keeper has following beneficial effect:
the composite filtering system consisting of the metal sintered filter element, the activated carbon filter element and the nitrocellulose filtering membrane can filter dust particles and water vapor simultaneously;
adopt detachable threaded connection with infrared gas sensor, can regularly independently change this waterproof dust keeper and not influence the gas sensor performance, keep the optics air chamber for a long time not receive the pollution, guarantee infrared gas sensor's measurement accuracy, increase of service life.
Drawings
In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural view of a preferred embodiment of the waterproof and dustproof device of the infrared gas sensor of the present invention.
Fig. 2 is an exploded view of a preferred embodiment of the waterproof and dustproof device of the infrared gas sensor of the present invention.
Fig. 3 is a cross-sectional view of a preferred embodiment of the waterproof and dustproof device of the infrared gas sensor of the present invention.
Fig. 4 is a water-proof and dust-proof schematic view of the water-proof and dust-proof device of the infrared gas sensor of the present invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The embodiment of the utility model provides an infrared gas sensor's waterproof dust keeper, as shown in fig. 1 to fig. 3, it includes: the filter comprises a shell 100, wherein the top of the shell 100 is provided with an upper cover 200, and a nitrocellulose filter membrane 300, an activated carbon filter element 400 and a metal sintered filter element 500 are sequentially overlapped between the shell 100 and the upper cover 200 from bottom to top; the middle part of the upper cover 200 is provided with a through hole, the through hole is internally provided with an upper breathable net 201 for the gas to be filtered to pass through, and the bottom of the shell 100 is provided with a lower breathable net 101 for the filtered gas to pass through.
This waterproof dust keeper passes through threaded connection with infrared gas sensor 20, is provided with external screw thread 21 on infrared gas sensor 20 promptly, and threaded connection department adopts seal ring to seal, prevents that unfiltered gas from the connector infiltration. The waterproof and dustproof device can be replaced independently at regular intervals without influencing various functions of the infrared gas sensor, so that the optical gas chamber can be kept free from pollution for a long time.
As shown in fig. 4, the working principle of the waterproof and dustproof device is as follows: after a gas mixture 10 formed by gas molecules to be detected, water molecules and dust particles passes through the waterproof and dustproof device, the metal sintered filter element 500 is provided with a dense breathable micropore array, so that the dust particles with larger particle diameters in the mixture can be effectively filtered; the activated carbon filter element 400 has a loose micropore array structure and strong hydrophilicity, and can effectively filter water vapor and residual dust particles; the nitrocellulose filter membrane 300 has a microporous array of hundred nanometers, can effectively filter finally residual water vapor and fine dust particles, and finally filtered clean gas to be detected is output from the lower breathable net 101 of the shell and enters the optical air chamber 22 of the infrared gas sensor 20, so that pollution to the optical air chamber is avoided, and the waterproof and dustproof purposes are achieved.
In a further preferred embodiment of the present invention, the cross-section of the casing 100 is H-shaped, and the casing 100 includes a cylindrical side plate 102 and a bottom plate 103 vertically disposed with the cylindrical side plate 102.
In a further preferred embodiment of the present invention, the bottom plate 103 is disposed in the middle of the cylindrical side plate 102.
In a further preferred embodiment of the present invention, the lower side of the cylindrical side plate 102 on the bottom plate is provided with an internal thread 112 connected to the infrared gas sensor.
In a further preferred embodiment of the present invention, a sealing washer 600 is disposed between the bottom plate 103 and the internal thread 112.
In a further preferred embodiment of the present invention, the nitrocellulose filter 300, the activated carbon filter 400, and the metal sintered filter 500 are all configured in a disk shape.
In a further preferred embodiment of the present invention, the diameters of the nitrocellulose filter membrane 300 and the activated carbon filter element 400 are equal to the inner diameter of the cylindrical side plate 102.
In a further preferred embodiment of the present invention, the diameter of the sintered metal filter element 500 is equal to the inner diameter of the upper cover 200, and the sintered metal filter element 500 is located in the upper cover 200.
In a further preferred embodiment of the present invention, the nitrocellulose filter membrane 300 has a hundred-nanometer-scale micropore array structure.
In a further preferred embodiment of the present invention, the nitrocellulose filter membrane 300 is a hydrophilic nitrocellulose filter membrane.
The manufacturing method of the waterproof and dustproof device comprises the following steps: firstly, manufacturing a shell 100, manufacturing a lower breathable net 101 in the middle of the shell 100, and manufacturing a shell internal thread 112 at the bottom; secondly, the nitrocellulose filter membrane 300, the activated carbon filter element 400 and the metal sintered filter element 500 are placed in the housing 100 in sequence; and finally, the shell 100 is combined with the upper cover 200 in an interference fit manner, and all filter elements and the filter membranes are pressed and molded to complete the manufacture of the waterproof and dustproof device.
The waterproof and dustproof device is connected with the optical gas chamber of the infrared gas sensor through threads, and the waterproof and dustproof device is replaced independently at regular intervals without influencing various functions of the optical gas chamber of the infrared gas sensor; the sealing gasket 600 is used for gas sealing at the threaded connection to prevent unfiltered gas from penetrating into the optical gas cell.
To sum up, the utility model discloses a waterproof dust keeper of infrared gas sensor installs the device at the front end of infrared gas sensor's optics air chamber, and water vapor and dust granule that mix in the effective filtering awaits measuring gas avoid the water vapor to condense and the influence of dust granule enrichment reflection efficiency in the optics air chamber, play the guard action to optics air chamber.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (10)
1. The utility model provides an infrared gas sensor's waterproof dust keeper which characterized in that includes:
the top of the shell is provided with an upper cover, and a nitrocellulose filter membrane, an activated carbon filter element and a metal sintering filter element are sequentially superposed between the shell and the upper cover from bottom to top;
the middle part of the upper cover is provided with a through hole, an upper breathable net for the gas to be filtered to pass through is arranged in the through hole, and a lower breathable net for the filtered gas to pass through is arranged at the bottom of the shell.
2. The infrared gas sensor waterproof and dustproof device as claimed in claim 1, wherein the cross section of the housing is H-shaped, and the housing includes a cylindrical side plate and a bottom plate disposed perpendicular to the cylindrical side plate.
3. The infrared gas sensor waterproof and dustproof device as claimed in claim 2, wherein the bottom plate is disposed in the middle of the cylindrical side plate.
4. The waterproof and dustproof device for an infrared gas sensor as claimed in claim 3, wherein the cylindrical side plate is provided with an internal thread connected with the infrared gas sensor at the lower side of the bottom plate.
5. The infrared gas sensor waterproof and dustproof device as claimed in claim 4, wherein a sealing gasket is disposed between the bottom plate and the internal thread.
6. The waterproof and dustproof device for the infrared gas sensor according to claim 5, wherein the nitrocellulose filter membrane, the activated carbon filter element, and the metal sintered filter element are all provided in a disk shape.
7. The waterproof and dustproof device for an infrared gas sensor as claimed in claim 6, wherein the diameters of the nitrocellulose filter membrane and the activated carbon filter element are equal to the inner diameter of the cylindrical side plate.
8. The infrared gas sensor waterproof and dustproof device as claimed in claim 7, wherein the diameter of the metal sintered filter element is equal to the inner diameter of the upper cover, and the metal sintered filter element is located inside the upper cover.
9. The waterproof and dustproof device for an infrared gas sensor according to claim 1, wherein the nitrocellulose filter membrane has a hundred nanometer-scale micropore array structure.
10. The waterproof and dustproof device for an infrared gas sensor according to claim 9, wherein the nitrocellulose filter membrane is a hydrophilic nitrocellulose filter membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922133036.8U CN211179499U (en) | 2019-11-29 | 2019-11-29 | Waterproof and dustproof device of infrared gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922133036.8U CN211179499U (en) | 2019-11-29 | 2019-11-29 | Waterproof and dustproof device of infrared gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211179499U true CN211179499U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922133036.8U Active CN211179499U (en) | 2019-11-29 | 2019-11-29 | Waterproof and dustproof device of infrared gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211179499U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432346A (en) * | 2020-12-07 | 2021-03-02 | 珠海格力电器股份有限公司 | Sensor cleaning assembly, sensor and air conditioning system |
| CN112432347A (en) * | 2020-12-07 | 2021-03-02 | 珠海格力电器股份有限公司 | Sensor cleaning assembly, sensor and air conditioning system |
| CN113975907A (en) * | 2021-09-30 | 2022-01-28 | 国网江苏省电力有限公司电力科学研究院 | Filtering module, measuring method thereof and gas sensor |
-
2019
- 2019-11-29 CN CN201922133036.8U patent/CN211179499U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432346A (en) * | 2020-12-07 | 2021-03-02 | 珠海格力电器股份有限公司 | Sensor cleaning assembly, sensor and air conditioning system |
| CN112432347A (en) * | 2020-12-07 | 2021-03-02 | 珠海格力电器股份有限公司 | Sensor cleaning assembly, sensor and air conditioning system |
| CN112432346B (en) * | 2020-12-07 | 2022-02-11 | 珠海格力电器股份有限公司 | Sensor cleaning assembly, sensor and air conditioning system |
| CN112432347B (en) * | 2020-12-07 | 2022-04-22 | 珠海格力电器股份有限公司 | Sensor cleaning assembly, sensor and air conditioning system |
| CN113975907A (en) * | 2021-09-30 | 2022-01-28 | 国网江苏省电力有限公司电力科学研究院 | Filtering module, measuring method thereof and gas sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 1701, Building C1, No. 459 Qiaokai Road, Fenghuang Community, Guangming District, Shenzhen City, Guangdong Province, 518000 Patentee after: Shenzhen Lianding Sensing Technology Co.,Ltd. Address before: 518000, Building A2, Building A2, Guangming Science and Technology Park, China Merchants Group, Fenghuang Community, Fenghuang Street, Guangming District, Shenzhen City, Guangdong Province 1201 Patentee before: Shenzhen noan Sensing Technology Co.,Ltd. |
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| CP03 | Change of name, title or address |