CN107462675A - Environmental detection set with integral sensor protective cover - Google Patents
Environmental detection set with integral sensor protective cover Download PDFInfo
- Publication number
- CN107462675A CN107462675A CN201710641453.6A CN201710641453A CN107462675A CN 107462675 A CN107462675 A CN 107462675A CN 201710641453 A CN201710641453 A CN 201710641453A CN 107462675 A CN107462675 A CN 107462675A
- Authority
- CN
- China
- Prior art keywords
- protective cover
- sensor
- air inlet
- housing
- environmental detection
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
Abstract
The invention discloses a kind of environmental detection set with integral sensor protective cover, it includes a housing, an air inlet is provided with the housing, one air outlet, the enclosure interior is provided with sensor stand, some sensors and carbon dioxide sensor are arranged on the sensor stand, a protective cover is wherein provided with the outside of described sensor, air inlet is provided with vavuum pump in the enclosure interior, centrifugal blower is provided with air outlet in the enclosure interior, the enclosure interior is provided with moisture filter, the moisture filter, protective cover, carbon dioxide sensor, vavuum pump is sequentially tightly connected by flexible pipe.The present invention has and will flow through the gas flow rate unification of each sensor, and can accelerate the exchange velocity of enclosure interior and extraneous gas, improves the precision of detection, and the advantages that protection sensor.
Description
Technical field
The present invention relates to a kind of environmental detection set, more particularly to a kind of environment inspection with integral sensor protective cover
Survey device.
Background technology
Applicant is had found in environment detector housing when research and development have the environment monitor of more detection project functions
Internal multiple environmental detection sensors, when enclosure interior exchanges with extraneous gas, flow through each sensing because position is different
The gas flow rate of device is different, that is to say, that the accuracy in detection of sensor is had a great influence by gas flow rate, and then influences environment inspection
Survey the Detection results of instrument；In addition, each sensor is exposed in enclosure interior, easily to external environment influence, sensor is reduced
Service life.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of environmental detection set with integral sensor protective cover, its
Including a housing 100, an air inlet 101 is provided with the housing, an air outlet 102, is internally provided with the housing 100
Sensor stand 700, some sensors 701 and carbon dioxide sensor 800 are arranged on the sensor stand, wherein
The described outside of sensor 701 is provided with a protective cover 300, is provided with the inside of housing 100 at air inlet 101 true
Empty pump 200, centrifugal blower 400 is provided with air outlet 102 in the inside of housing 100, is set inside the housing 100
Moisture filter 500 is equipped with, the moisture filter 500, protective cover 300, carbon dioxide sensor 800, vavuum pump 200 pass through
Flexible pipe is sequentially tightly connected.
Preferably, the vavuum pump 200 has air inlet 202 and gas outlet 201, and the protective cover 300 has suction nozzle
302 have air inlet 402 and air outlet 401 with outlet nozzle 301, the centrifugal blower 400, and the moisture filter 500 has
Air inlet 502 and gas outlet 501, the carbon dioxide sensor 800 has air inlet 801 and gas outlet 802, wherein the water
The gas outlet 501 of vapour filter is tightly connected with the suction nozzle 302 of protective cover 300 by flexible pipe, the outlet of the protective cover 300
The air inlet 801 of mouth 301 and the carbon dioxide sensor 800 is tightly connected by flexible pipe, the carbon dioxide sensor 800
Gas outlet 802 and the air inlet 202 of the vavuum pump 200 be tightly connected by flexible pipe, the gas outlet of the vavuum pump 200
201 are tightly connected a flexible pipe 203, and the flexible pipe 203 is extended at the air inlet 402 of the centrifugal blower 400.
Preferably, the protective cover 300 includes first side 300A, second side 300B and is disposed there between
Seal 900.
Preferably, the first side 300A is provided with air admission hole 303, venthole 304, respectively with the suction nozzle 302,
Outlet nozzle 301 is tightly connected.
Preferably, the first side 300A is provided with the groove knot adaptable with the sensor 701 and seal 900
Structure 900A.
Preferably, the second side 300B is provided with some gauge holes 306 for accommodating the sensor 701, and
Perpendicular to the raised structures 900B adaptable with the seal 900, groove structure 900A of second side 300B extensions.
Preferably, the protective cover 300 is polytetrafluoroethylene (PTFE) or stainless steel.
Preferably, a waterproof construction 600 is also included in the housing 100, be arranged at air inlet 101 and vavuum pump 200 it
Between.
Preferably, the waterproof construction 600 has at least one water-retaining structure 601, the water-retaining structure 601 and housing
100 are tightly connected.
Preferably, the bottom of air inlet 101 is located at same level with the bottom surface of housing 100.
In summary, technical scheme disclosed by the invention, which has, to flow through the gas flow rate unification of each sensor, and can accelerate
The exchange velocity of enclosure interior and extraneous gas, improves the precision of detection, and protects the sensor from extraneous factor interference
And the effect of infringement.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
The accompanying drawing of other embodiment is obtained according to these accompanying drawings.
Fig. 1 is environment monitor body diagram of the present invention；
Fig. 2 is environment monitor housing parts schematic cross-sectional view of the present invention；
Fig. 3 is environment monitor enclosure interior schematic diagram of the present invention；
Fig. 4 is inventive sensor support and protective cover exploded perspective view；
Fig. 5 is protective cover front schematic view of the present invention；
Fig. 6 is protective cover reverse side schematic diagram of the present invention；
Fig. 7 is protective cover first side schematic diagram of the present invention；
Fig. 8 is protective cover second side schematic diagram of the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.Unless otherwise defined, the skill of technical field of all of technologies and scientific terms used here by the article with belonging to the present invention
The implication that art personnel are generally understood that is identical.It is specific that term used in the description of the invention herein is intended merely to description
Embodiment purpose, it is not intended that limitation the present invention.Term as used herein " and/or " include one or more correlations
The arbitrary and all combination of Listed Items.
The particular content of the present invention is described in detail below in conjunction with Fig. 1 to Fig. 8.As shown in Figures 1 to 4, it is of the invention
A kind of environmental detection set with integral sensor protective cover is disclosed, it includes a housing 100, is set on the housing
There is an air inlet 101, an air outlet 102, sensor stand 700, some sensors 701 are internally provided with the housing 100
And carbon dioxide sensor 800 is arranged on the sensor stand, wherein being provided with one in the described outside of sensor 701
Protective cover 300, vavuum pump 200 is provided with air inlet 101 in the inside of housing 100, is leaned on inside the housing 100
Centrifugal blower 400 is provided with nearly air outlet 102, moisture filter 500, the steam are internally provided with the housing 100
Filter 500, protective cover 300, carbon dioxide sensor 800, vavuum pump 200 are sequentially tightly connected by flexible pipe.
If technical scheme disclosed by the invention will be arranged on sensor stand 700 by the protective cover 300 of integral type
A dry sensor 800 is sealed in the same space, and vacuum is provided with air inlet 101 further through the inside of housing 100 is arranged on
Centrifugal blower 400 and moisture filter 500 are provided with pump 200, close air outlet 102 and some flexible pipes composition one is special
Air ventilation passage, the gas in housing 100 first causes Uniform gas flow velocity in the presence of vavuum pump 200, and by water
Vapour filter 500 enters, and filters out the steam in gas after moisture filter 500（Detection essence can be influenceed because steam is overweight
Degree）, subsequently into protective cover 300, Uniform gas flow velocity by each sensor, then again by vavuum pump 200 by gas
Body, which is delivered at close air outlet 102, is provided with the discharge hull outside of centrifugal blower 400, and enclosure interior and outside are improved to realize
The exchange velocity of gas, and ensure that the gas flow rate for flowing through each sensor is relatively uniform, meanwhile, protective cover of the present invention
Structure has the function that to protect the sensor from extraneous factor interference and infringement.
It should be noted that carbon dioxide sensor 800 of the present invention is arranged on outside protective cover 300, dioxy is improved
Change the exchange velocity of carbon sensor and extraneous gas, and ensure that the gas flow rate for flowing through carbon dioxide sensor is relatively uniform,
Also will can be delivered the gas to again by vavuum pump 200 from the gas that protective cover 300 exports via after carbon dioxide sensor 800
Centrifugal blower 400 is provided with air outlet 102 and discharges hull outside.Carbon dioxide sensor 800 can certainly be set
It is placed in inside protective cover 300, reaches identical purpose.
In addition, housing 100 of the present invention can be metal shell or include the composition metal of phase-change material
Housing, using the Composite metal shell of phase-change material, using the phase-change constant-temperature characteristic of phase-change material, maintain enclosure interior temperature permanent
It is fixed, enclosure interior electronic device normal work is can ensure that when local environment temperature raises；Some sensors 701 can be
Dust sensor, light sensor, temp-sensitive sensor, gas sensor, humidity sensor, acoustic sensor, nuclear radiation sensing
A kind of and/or multiple combinations therein such as device, anion sensor, bacterium colony sensor, chemical sensor, specifically can be according to application
The suitable sensor of environmental selection is to detect different environmental datas；TYGON flexible pipes, the protective cover may be selected in the flexible pipe
300 be polytetrafluoroethylene (PTFE) or stainless steel, using polytetrafluoroethylene (PTFE) or stainless steel have surface it is smooth be not easy adsorbed gas or
The characteristic of impurity, the percent of pass by protective cover gas is improved, reduce influence of the extraneous factor to testing result.
Further, vavuum pump 200 of the present invention has air inlet 202 and gas outlet 201, and the protective cover 300 has
There are suction nozzle 302 and outlet nozzle 301, the centrifugal blower 400 has air inlet 402 and air outlet 401, the moisture filter
500 have air inlet 502 and gas outlet 501, and the carbon dioxide sensor 800 has air inlet 801 and gas outlet 802, its
Described in the gas outlet 501 of moisture filter be tightly connected with the suction nozzle 302 of protective cover 300 by flexible pipe, the protective cover
The air inlet 801 of 300 outlet nozzle 301 and the carbon dioxide sensor 800 is tightly connected by flexible pipe, the carbon dioxide
The gas outlet 802 of sensor 800 and the air inlet 202 of the vavuum pump 200 are tightly connected by flexible pipe, the vavuum pump 200
Gas outlet 201 be tightly connected a flexible pipe 203, the flexible pipe 203 extended at the air inlet 402 of the centrifugal blower 400, by
The side of housing air outlet 102 is arranged in the air outlet 401 of centrifugal blower 400, in order to fast by the gas of each sensor
Speed discharge housing 100, accelerate the gas flowing in housing, and then can more accurately detect gas to be measured.
Due to being provided with vavuum pump 200 and other electronic devices at air inlet 101 in the inside of housing 100, it is
Strengthen classification of waterproof, present invention additionally comprises a waterproof construction 600, be arranged between air inlet 101 and vavuum pump 200, it is described anti-
Water-bound 600 has at least one water-retaining structure 601, and the water-retaining structure 601 is tightly connected with housing 100, it is preferred that described
The height of waterproof construction 600 should be greater than the height of vavuum pump 200.It should be noted that it is arranged at the centrifugal blower at air outlet 102
400 inside have waterproof construction, therefore herein without additionally setting waterproof construction 600.
In addition, the bottom of the air inlet 101 and the bottom surface of housing 100 are arranged to same level, i.e. air intake by the present invention
Mouth is in same plane with housing bottom surface, in order to which the water that waterproof construction 600 stops quickly is discharged from housing.
As shown in Fig. 4 to Fig. 8, protective cover 300 of the present invention include first side 300A, second side 300B and
The seal 900 being disposed there between, the first side 300A, second side 300B are polytetrafluoroethylene (PTFE) or stainless steel
Material, seal 900 are soft material（Such as rubber) to prevent gas from leaking.The first side 300A is provided with air inlet
Hole 303, venthole 304, it is tightly connected respectively with the suction nozzle 302, outlet nozzle 301.
In addition, the first side 300A is additionally provided with the groove knot adaptable with the sensor 701 and seal 900
Structure 900A, the groove structure 900A includes the strip structure being adapted with seal 900 and cooperation fixed screw holes 305 are used
Circular configuration；The first side 300A is additionally provided with the gas-guiding structure of gas circulation, and the gas-guiding structure, which is divided into first, leads
Depressed structure 307, the second gas-guiding structure 308, the 3rd gas-guiding structure 309, the air admission hole 303, the first gas-guiding structure 307, second
Gas-guiding structure 308, the 3rd gas-guiding structure 309 and venthole 304 form a gas channel, and bootable gas is in sequence
Flow through each sensor.Wherein, first gas-guiding structure 307, the second gas-guiding structure 308, the quantity of the 3rd gas-guiding structure 309
At least one, specifically can be according to the appropriate change of actual use.
Second side 300B of the present invention is provided with some gauge holes 306 for accommodating the sensor 701, and
The raised structures 900B adaptable with the seal 900, groove structure 900A upwardly extended perpendicular to second side 300B.
Sealed between some sensors 701 and protective cover 300 of the present invention by multiple soft sealing rings, it is described anti-
Also it is by soft sealing ring sealing between the suction nozzle 302 of shield 300, outlet nozzle 301 and first side 300A, has in accompanying drawing
Diagram, but non-label, therefore illustrate herein.In addition, seal 900 has a gap structure 901 and screw hole 902, it is respectively used to
The 3rd gas-guiding structure 309, and each screw is coordinated to fix and use.
It is best mode for carrying out the invention above, the present invention, which can also become, turns to what vavuum pump 200 formed with protective cover 300
Technical scheme（Only narration and the difference part of preferred forms below）, i.e.,：Gas in housing 100 is in vavuum pump 200
Under effect, entered with uniform flow velocity by the suction nozzle 302 of protective cover 300, flow through each sensor in protective cover 300
After 701, the air inlet 201 via the vavuum pump 200 for the flexible pipe being connected with outlet nozzle 301 enters in vavuum pump, the vavuum pump
200 gas outlet 201 is tightly connected a flexible pipe 203, and the flexible pipe 203 extends to the side of housing air outlet 102 and is expelled directly out shell
Outside body, to improve the exchange velocity of enclosure interior and extraneous gas.
Vavuum pump 200, the technical side of protective cover 300 and the composition of moisture filter 500 are turned to it is also possible to become
Case（Only narration and the difference part of preferred forms below）, i.e.,：Gas in housing 100 in the presence of vavuum pump 200,
Entered by the air inlet 502 of moisture filter 500, filter out the steam in gas after moisture filter 500（Because of steam mistake
Detection results can be influenceed again）, then entered via the gas outlet 501 of moisture filter 500 by the suction nozzle 302 of protective cover 300
Enter, by the gas outlet 201 of empty pump 200 passed through the consistent gas to be detected of dry flow velocity in the presence of empty pump 200 soft
Pipe sequentially flows through sensor 701 different in sensor protective shield 300, via the vavuum pump for the flexible pipe being connected with outlet nozzle 301
200 air inlet 201 enters in vavuum pump, and the gas outlet 201 of the vavuum pump 200 is tightly connected a flexible pipe 203, the flexible pipe
203, which extend to the side of housing air outlet 102, is expelled directly out hull outside, and speed is exchanged with improve enclosure interior and extraneous gas
Degree.
Vavuum pump 200, the technical scheme of protective cover 300 and the composition of centrifugal blower 400 are turned to it is also possible to become
（Only narration and the difference part of preferred forms below）, i.e.,：Gas in housing 100 in the presence of vavuum pump 200, with
Uniform flow velocity is entered by the suction nozzle 302 of protective cover 300, after flowing through each sensor 701 in protective cover 300, via
The air inlet 201 of the vavuum pump 200 for the flexible pipe being connected with outlet nozzle 301 enters in vavuum pump, the gas outlet of the vavuum pump 200
201 are tightly connected a flexible pipe 203, and the flexible pipe 203 is extended at the air inlet 402 of the centrifugal blower 400, then by being arranged at
The air outlet 401 of the centrifugal blower 400 discharge hull outside of the side of housing air outlet 102, to improve enclosure interior and extraneous gas
Exchange velocity.
Technical scheme disclosed by the invention, the gas flow rate unification of each sensor can will be flowed through, and can accelerated in housing
Portion and the exchange velocity of extraneous gas, improve the precision of detection.
Above example only expresses one or more of embodiments of the present invention, and its description is more specific and detailed, but
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that the ordinary skill people for this area
For member, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the present invention's
Protection domain.
Claims (10)
1. a kind of environmental detection set with integral sensor protective cover, it includes a housing（100）, set on the housing
It is equipped with an air inlet（101）, an air outlet（102）, in the housing（100）It is internally provided with sensor stand（700）, it is some
Sensor（701）And carbon dioxide sensor（800）It is arranged on the sensor stand, it is characterised in that：Described
Sensor（701）Outside is provided with a protective cover（300）, in the housing（100）Internal close air inlet（101）Place is provided with
Vavuum pump（200）, in the housing（100）Internal close air outlet（102）Place is provided with centrifugal blower（400）, in the shell
Body（100）It is internally provided with moisture filter（500）, the moisture filter（500）, protective cover（300）, carbon dioxide sensing
Device（800）, vavuum pump（200）Sequentially it is tightly connected by flexible pipe.
2. the environmental detection set according to claim 1 with integral sensor protective cover, it is characterised in that：It is described
Vavuum pump（200）With air inlet（202）With gas outlet（201）, the protective cover（300）With suction nozzle（302）With outlet
Mouth（301）, the centrifugal blower（400）With air inlet（402）With air outlet（401）, the moisture filter（500）Have
Air inlet（502）With gas outlet（501）, the carbon dioxide sensor（800）With air inlet（801）With gas outlet（802）,
The gas outlet of wherein described moisture filter（501）With protective cover（300）Suction nozzle（302）It is tightly connected by flexible pipe, institute
State protective cover（300）Outlet nozzle（301）With the carbon dioxide sensor（800）Air inlet（801）Sealed by flexible pipe
Connection, the carbon dioxide sensor（800）Gas outlet（802）With the vavuum pump（200）Air inlet（202）By soft
The seal of tube connects, the vavuum pump（200）Gas outlet（201）It is tightly connected a flexible pipe（203）, the flexible pipe（203）Extension
To the centrifugal blower（400）Air inlet（402）Place.
3. the environmental detection set according to claim 1 with integral sensor protective cover, it is characterised in that：It is described
Protective cover（300）Including first side（300A）, second side（300B）And the seal being disposed there between（900）.
4. the environmental detection set according to claim 3 with integral sensor protective cover, it is characterised in that：It is described
First side（300A）It is provided with air admission hole（303）, venthole（304）, respectively with the suction nozzle（302）, outlet nozzle（301）
It is tightly connected.
5. the environmental detection set according to claim 3 with integral sensor protective cover, it is characterised in that：It is described
First side（300A）It is provided with and the sensor（701）And seal（900）Adaptable groove structure（900A）.
6. the environmental detection set according to claim 5 with integral sensor protective cover, it is characterised in that：It is described
Second side（300B）It is provided with and accommodates the sensor（701）Some gauge holes（306）, and perpendicular to second side
（300B）Extension with the seal（900）, groove structure（900A）Adaptable raised structures（900B）.
7. the environmental detection set according to claim 1 with integral sensor protective cover, it is characterised in that：It is described
Protective cover（300）For polytetrafluoroethylene (PTFE) or stainless steel.
8. the environmental detection set according to claim 1 with integral sensor protective cover, it is characterised in that：It is described
Housing（100）Inside also include a waterproof construction（600）, it is arranged at air inlet（101）With vavuum pump（200）Between.
9. the environmental detection set according to claim 1 with integral sensor protective cover, it is characterised in that：It is described
Waterproof construction（600）With at least one water-retaining structure（601）, the water-retaining structure（601）With housing（100）It is tightly connected.
10. the environmental detection set according to claim 1 with integral sensor protective cover, it is characterised in that：Institute
State air inlet（101）Bottom and housing（100）Bottom surface is located at same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641453.6A CN107462675A (en) | 2017-07-31 | 2017-07-31 | Environmental detection set with integral sensor protective cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641453.6A CN107462675A (en) | 2017-07-31 | 2017-07-31 | Environmental detection set with integral sensor protective cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107462675A true CN107462675A (en) | 2017-12-12 |
Family
ID=60547798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710641453.6A Pending CN107462675A (en) | 2017-07-31 | 2017-07-31 | Environmental detection set with integral sensor protective cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107462675A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470794A (en) * | 2018-05-11 | 2019-11-19 | 江苏日盈电子股份有限公司 | Portable vehicle with air quality detecting device |
| CN112505249A (en) * | 2020-06-30 | 2021-03-16 | 沈阳达能电安全高新产业技术研究院有限公司 | Waterproof gas meter box |
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| CN205301290U (en) * | 2016-01-11 | 2016-06-08 | 北京安赛克科技有限公司 | Pentahapto detector of personally experiencing sth. part of body at a stretch |
| CN106959355A (en) * | 2017-04-19 | 2017-07-18 | 杨和生 | active gas sensor |
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| CN200968942Y (en) * | 2006-11-07 | 2007-10-31 | 王保齐 | Gas automatic acquiring, monitoring device |
| CN101887044A (en) * | 2009-05-11 | 2010-11-17 | 日本特殊陶业株式会社 | Gas sensor unit |
| CN102384963A (en) * | 2011-11-14 | 2012-03-21 | 河南汉威电子股份有限公司 | Device and method for detecting concentration of quick flow gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470794A (en) * | 2018-05-11 | 2019-11-19 | 江苏日盈电子股份有限公司 | Portable vehicle with air quality detecting device |
| CN112505249A (en) * | 2020-06-30 | 2021-03-16 | 沈阳达能电安全高新产业技术研究院有限公司 | Waterproof gas meter box |
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