CN216847724U - Gas sensing module and environmental air quality monitoring micro station - Google Patents
Gas sensing module and environmental air quality monitoring micro station Download PDFInfo
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- CN216847724U CN216847724U CN202220253391.8U CN202220253391U CN216847724U CN 216847724 U CN216847724 U CN 216847724U CN 202220253391 U CN202220253391 U CN 202220253391U CN 216847724 U CN216847724 U CN 216847724U
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Abstract
The utility model discloses a gaseous sensing module and miniature station of ambient air quality monitoring relates to the air monitering equipment field, include: the gas sensor is arranged in an inner cavity of the protective shell, an air inlet pipe and an air outlet pipe are arranged in the inner cavity, the heating temperature control plate is arranged on the protective shell and forms a heating and drying area in the inner cavity, a tail end air port of the air inlet pipe is positioned in the heating and drying area, and the heating temperature control plate is electrically connected with the main control unit; the utility model discloses in carry to the inner chamber after external low temperature, moist air from the intake pipe, can receive the stoving effect of heating temperature control plate, prevent condensing of water droplet, directly dry gas in the inner chamber that gas sensor set up in addition, avoided the emergence of the cooling condensation phenomenon of drying back gas in transportation process and when stopping in the inner chamber, and then avoided the water droplet to gas sensor's interference, the alert probability of greatly reduced wrong report improves gas sensor's detection precision.
Description
Technical Field
The utility model relates to an air monitoring equipment field especially relates to a gaseous sensing module and miniature station of ambient air quality monitoring.
Background
Along with the increasing of the adjustment force of the national industrial structure, the upgrading and modification range of energy conservation and emission reduction is continuously expanded. The state not only requires the total amount of pollutants to reach the standard and the emission to reach the standard for enterprises, but also implements pollution discharge monitoring and monitoring, and pays more attention to environmental protection advance prediction, process analysis and risk management and control.
From the development trend in future, environmental protection management is gradually moving to the direction of informatization, visualization, intellectualization and high efficiency, and the miniature ambient air monitoring station is used for collecting the emission types and data of pollutants in the environment and monitoring the operation condition of pollution treatment facilities, so that the environment monitoring management platform with all-around, real-time performance and capability of being created is facilitated, and the environmental protection management level of enterprises is improved.
In the field of environmental information acquisition and monitoring, particularly industrial gas environment monitoring, monitoring equipment is required to timely acquire gas leakage information, but most of existing gas monitoring equipment has weak environmental interference resistance of a gas sensor used for data acquisition, and false alarm is easy to occur.
For example: the invention patent with the application number of '201410157877.1' and the name of 'infrared gas sensor gas chamber and infrared gas sensor thereof' discloses a gas sensing module, which comprises an infrared gas sensor and an infrared gas sensor gas chamber applied on the infrared gas sensor, but when the whole module is positioned in a low-temperature humid environment, water drops can be gradually accumulated in the infrared gas sensor gas chamber, the normal work of the sensor is seriously influenced, and the sensor sends a false alarm signal.
The invention discloses a gas sensor, which is called as an infrared gas sensor for measuring supersaturated steam, and the invention patent with the application number of 201210539714.0 and the name of 'infrared gas sensor for measuring supersaturated steam' discloses a gas sensor, which comprises a microprocessor circuit, an infrared light source, a measuring gas chamber with a gas inlet and a gas outlet, an infrared gas detector, a signal processing circuit, a power supply circuit and a supersaturated steam gasification device, wherein the supersaturated steam gasification device comprises a gasification cavity with a gas inlet and a gas outlet, a heating body and a heating control circuit which are arranged on or in the gasification cavity, the gas outlet of the gasification cavity is connected with the gas inlet of the measuring gas chamber, the microprocessor circuit is connected with the heating body through the heating control circuit so as to control the power supply on-off or power supply current of the heating body, after the gas is heated by the gasification chamber, the completely gasified gas is introduced into the measuring gas chamber to carry out conventional gas concentration infrared detection, but the arrangement of the gasification chamber not only increases the space occupation and the production cost of the whole structure, and before the subsequent gas enters the measuring air chamber and in the process of entering the measuring air chamber, the problem of water drops condensed by temperature reduction still exists, namely the possibility of false alarm still exists.
Therefore, a gas sensing module with high detection precision and low false alarm probability and an ambient air quality monitoring micro station using the same are needed.
Disclosure of Invention
The utility model aims at providing a gaseous sensing module and miniature station of ambient air quality monitoring to solve the problem that above-mentioned prior art exists, through the setting of heating temperature control plate, will enter into the gas stoving in the protection casing inner chamber, avoid the condition of the water droplet of condensing to appear in the inner chamber, the alert probability of greatly reduced wrong report improves gas sensor's detection precision.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a gaseous sensing module and miniature station of ambient air quality monitoring, including gas sensor, protection casing and be used for the gaseous heating temperature control board of stoving, gas sensor sets up in the inner chamber of protection casing, the inner chamber is provided with intake pipe and outlet duct, the setting of heating temperature control board is in on the protection casing, and form the heating drying zone in the inner chamber, the terminal gas port of intake pipe is located in the heating drying zone, the heating temperature control board is connected with the master control unit electricity.
Preferably, the caliber of the tail end of the air inlet pipe is smaller than that of the starting end, and the caliber of the starting end of the air outlet pipe is smaller than that of the tail end.
Preferably, the starting end gas port of the gas outlet pipe is positioned in the heating and drying area.
The utility model provides an use gaseous sensing module's miniature station of ambient air quality monitoring, the power distribution box comprises a box body main control unit, control switch, at least one gaseous sensing module, air inlet pipeline and mark gas pipeline, the main control unit control switch and gaseous sensing module all sets up in the box, air inlet pipeline one end is stretched out the box is linked together with external atmosphere, the other end pass through the three-way valve with the intake pipe is linked together, be provided with the aspiration pump on the air inlet pipeline, the outlet duct is linked together through exhaust pipe and external atmosphere, gas sensor and control switch all with the main control unit electricity is connected, mark gas pipeline one end is stretched out the box is outside, the other end pass through the three-way valve with the intake pipe is linked together.
Preferably, a wireless communication antenna for transmitting data to the terminal equipment is arranged outside the box body, a display screen for displaying the measured data is arranged on the main control unit, and a glass window is arranged at the position of the box body corresponding to the display screen.
Preferably, a first filter for steam-water separation and large-particle dust removal is arranged at the air inlet end of the air inlet pipeline, and a second filter for filtering fine particles is arranged between the air suction pump and the air inlet pipe.
Preferably, the air suction pump is a PWM wave diaphragm pump.
Preferably, the box body is provided with an air inlet corresponding to the position of the main control unit and an air outlet corresponding to the air inlet.
Preferably, the top of the box body is provided with a wind speed and direction sensor for judging the direction of the pollution source.
Preferably, the wind speed and direction sensor is arranged on one side of the top of the box body through a support, and the support is bent and arranged in a direction away from the central axis of the box body.
The utility model discloses for prior art gain following technological effect:
1. the utility model discloses in be provided with the heating temperature control board on the protection casing, and including intracavity formation heating drying area, the terminal gas port of intake pipe is located the heating drying area, when external low temperature, moist air is carried to the inner chamber after from the intake pipe, can receive the stoving effect of heating temperature control board, prevent the condensation of water droplet, and direct drying gas in the inner chamber of gas sensor setting, the emergence of the cooling condensation phenomenon of gas in transportation process and when stopping in the inner chamber after having avoided drying, and then avoided the water droplet to gas sensor's interference, greatly reduced wrong report police's probability, improve gas sensor's detection precision.
2. The utility model discloses the terminal bore of well intake pipe is less than the initiating terminal bore, and the initiating terminal bore of outlet duct is less than terminal bore, increases gaseous entering speed, makes gaseous can be fast and the contact of gas sensor, moreover because the initiating terminal bore of outlet duct is less, combines gaseous loss effect, and the outlet duct can restrict some gas and can not flow fast, but stops in the inner chamber, can guarantee that gaseous is full of the inner chamber fast, improves gas sensor's detection efficiency.
3. The utility model discloses the initiating terminal gas port of well outlet duct is located the stoving district for the combustion gas also has the uniform temperature in the follow inner chamber, prevents that gas from rapid cooling condensation in follow-up gas flow pipeline.
4. The utility model discloses in set up the impurity that first filter and second filter can effective filtration air, avoid impurity to cause the influence to gas sensor's detection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of the gas sensing module of the present invention;
FIG. 2 is a schematic structural view of the environmental air quality monitoring micro station of the present invention;
FIG. 3 is a front view of the environmental air quality monitoring micro station of the present invention;
the device comprises a gas sensing module, a gas sensor module and a control module, wherein 1, the gas sensing module is connected with the gas sensing module; 2. a gas sensor; 3. a protective housing; 4. heating the temperature control plate; 5. an inner cavity; 6. an air inlet pipe; 7. an air outlet pipe; 8. a box body; 9. a main control unit; 10. a control switch; 11. an air intake line; 12. a standard gas pipeline; 13. an exhaust line; 14. an air pump; 15. a three-way valve; 16. a wireless communication antenna; 17. a display screen; 18. a glass window; 19. a first filter; 20. a second filter; 21. an air inlet; 22. an air outlet; 23. a wind speed and direction sensor; 24. and (4) a bracket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a gaseous sensing module and miniature station of ambient air quality monitoring to solve the problem that prior art exists, through the setting of heating temperature control plate, will enter into the gas stoving in the protection casing inner chamber, avoid the condition appearance of the water droplet that condenses in the inner chamber, the alert probability of greatly reduced wrong report improves gas sensor's detection precision.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Please refer to fig. 1 to 3, which provide a gas sensing module 1, including a gas sensor 2, a protective casing 3 and a heating temperature control plate 4 for drying gas, wherein the gas sensor 2 is disposed in an inner cavity 5 of the protective casing 3, the inner cavity 5 is provided with an air inlet pipe 6 and an air outlet pipe 7, the heating temperature control plate 4 is disposed on the protective casing 3, and the specific setting positions are: the gas sensor is arranged in the protective shell 3 or outside the protective shell 3, when the heating temperature control plate 4 is arranged outside the protective shell 3, the protective shell 3 which is in contact with the heating temperature control plate 4 is ensured to be heat-conducting metal, the heating function of the heating temperature control plate 4 ensures that a heating drying area is formed in the inner cavity 5, the tail end gas port of the gas inlet pipe 6 is positioned in the heating drying area, when external low-temperature and humid air is conveyed to the inner cavity 5 from the gas inlet pipe 6, the drying effect of the heating temperature control plate 4 is exerted, the condensation of water drops is prevented, and the gas is directly dried in the inner cavity 5 arranged in the gas sensor 2, the cooling condensation phenomenon of the dried gas in the conveying process and in the inner cavity 5 is avoided, further, the interference of the water drops on the gas sensor 2 is avoided, the probability of false alarm is greatly reduced, and the detection precision of the gas sensor 2 is improved, the heating temperature control plate 4 is electrically connected with the main control unit 9, and the specific heating temperature of the heating temperature control plate 4 can be 35-40 ℃.
When the heating temperature control plate 4 is arranged outside the protection shell body 3, in order to avoid the influence of the external environment on the heating temperature control plate 4, a layer of protective sleeve can be arranged outside the heating temperature control plate 4 in a sleeved mode, and the protective sleeve can be connected to the protection shell body 3 through bolts.
The terminal bore of intake pipe 6 is less than the initiating terminal bore, increases gaseous admission speed, makes gaseous can be fast with gas sensor 2 contact, moreover because the initiating terminal bore of outlet duct 7 is less than terminal bore, combines gaseous loss effect, and outlet duct 7 can restrict some gas and can not flow out fast, but stops in inner chamber 5, can guarantee that gaseous is full of inner chamber 5 fast, improves gas sensor 2's detection efficiency.
The gas port at the starting end of the gas outlet pipe 7 is positioned in the heating and drying area, so that the gas discharged from the inner cavity 5 has a certain temperature, and the gas is prevented from being rapidly cooled and condensed in a subsequent gas flow pipeline.
The utility model also provides an environmental air quality monitoring micro station applying the gas sensing module 1, which comprises a box body 8, a main control unit 9 and a control switch 10, at least one gas sensing module 1, air inlet pipeline 11 and mark gas pipeline 12, main control unit 9, control switch 10 and gas sensing module 1 all set up in box 8, air inlet pipeline 11 one end is stretched out box 8 and is linked together with external atmosphere, the other end is linked together with intake pipe 6 through three-way valve 15, be provided with aspiration pump 14 on the air inlet pipeline 11, outlet duct 7 is linked together with external atmosphere through exhaust pipe 13, gas sensor 2 and control switch 10 all are connected with main control unit 9 electricity, mark gas pipeline 12 one end is stretched out the box 8 outside, the other end is linked together through three-way valve 15 and intake pipe 6, the path conversion of three-way valve 15 is controlled by main control unit 9.
At least one gas sensor 2 can be provided in the gas sensing module 1, for example: the single VOCs sensor is mainly used for measuring the total amount of volatile organic compounds in the air, and meanwhile, the control circuit board is provided with the temperature sensor, so that the TVOC value with high accuracy can be obtained through a compensation algorithm; the three-gas module is mainly a VOCs sensor and H2S sensor and NH3A sensor; the four gas modules are mainly a CO sensor and an SO2Sensor, NOx sensor and O3A sensor.
When setting up a plurality of gas sensor 2, set up a plurality of inner chambers 5 in the protective housing 3, a plurality of inner chambers 5 all communicate with intake pipe 6 and outlet duct 7, the size of every inner chamber 5 is similar with gas sensor 2 size, the sense terminal that only corresponds gas sensor 2 is provided with the space that a great confession gas persists, can be full of whole inner chamber 5 in the very short time after sample gas gets into inner chamber 5, accurate concentration value and the upload data of sample gas can be gathered in short time to gas sensor 2.
Each face of the box 8 is made of 304 stainless steel material, and a layer of anti-corrosion spray plastics is additionally arranged on the stainless steel.
For the convenience of subsequent maintenance, the box body 8 is provided with an opening and closing door on one side.
In order to facilitate the staff to check the gas data, a wireless communication antenna 16 for transmitting the data to the terminal device is arranged outside the box body 8, the wireless communication antenna 16 is connected with the main control unit 9, the wireless communication antenna 16 transmits the information to an external terminal, a display screen 17 for displaying the measured data is arranged on the main control unit 9, a glass window 18 is arranged at the position of the box body 8 corresponding to the display screen 17, and the staff can observe the gas data at the terminal or through the glass window 18.
The opening and closing door can be arranged corresponding to the glass window 18, the opening and closing door is made of transparent materials, or a glass window is arranged on the opening and closing door corresponding to the glass window 18, and data on the internal display screen 17 can be directly seen from the outside.
The wireless communication antenna 16 has three different options, 4G, LoRa or 5G, can be selected and matched with a flexible wireless communication channel module, uses wireless communication to carry out data communication in different application scenes, and can realize the functions of remote calibration, remote parameter configuration, remote software upgrading and the like because the communication is bidirectional communication.
The air inlet end of the air inlet pipeline 11 is provided with a first filter 19 for steam-water separation and large-particle dust removal, a second filter 20 for filtering fine particles is arranged between the air extracting pump 14 and the air inlet pipe 6, the first filter 19 and the second filter 20 are arranged to effectively filter impurities in air, and the detection of the gas sensor 2 by the impurities is prevented from being influenced.
The air pump 14 is a PWM wave diaphragm pump, or different air pumps are selected according to the actual application scenario.
In order to ensure normal heat dissipation of each internal component, the box 8 is provided with an air inlet 21 corresponding to the position of the main control unit 9 and an air outlet 22 corresponding to the air inlet 21, and a fan can be arranged at the air inlet 21 or the air outlet 22 to increase the heat dissipation speed.
The outside of air inlet 21 and air outlet 22 all sets up the safety cover, and the safety cover lower extreme opening sets up.
8 tops of box are provided with wind speed and direction sensor 23 that is used for judging pollution source direction, and specific mounted position can be: install in the top left side position of box 8, be higher than 8 tops of box slightly, this kind of placing method makes it carry out the omnidirectional to wind speed and direction and detects, and the purpose of installation wind speed and direction sensor 23 is the concentration condition of cooperation gas monitoring, judges where the pollutant source direction is, the direction analysis of tracing to the source of the pollutant of being convenient for.
Wind speed and direction sensor 23 is arranged on one side of the top of box body 8 through support 24, and support 24 is bent towards the direction far away from the central axis of box body 8, so that wind speed and direction sensor 23 is located on the outer side of box body 8 in an overlooking state and is far away from an antenna, interference is reduced, and meanwhile wind speed and direction are guaranteed not to be interfered by box body 8 as far as possible.
In the actual use process, the main control unit 9 controls the standard gas pipeline 12 to be communicated with the gas inlet pipe 6, standard gas is supplied into the inner cavity 5 by using external gas supply equipment, the gas sensor 2 is calibrated, then the standard gas pipeline 12 is controlled to be disconnected with the gas inlet pipe 6, the gas inlet pipeline 11 is communicated with the gas inlet pipe 6, the air pump 14 is started, the air pump 14 pumps external air into the inner cavity 5, the external air enters the inner cavity 5 after being filtered by the first filter 19 and the second filter 20, is in a gas state all the time under the drying effect of the heating temperature control plate 4, the gas sensor 2 detects gas and transmits the data to the main control unit 9, finally, the data are displayed on the display screen 17 and are transmitted to an external terminal through the wireless communication antenna 16, and the detected gas is discharged through the gas outlet pipe 7 and the exhaust pipeline 13; in the process of gas detection, the wind speed and direction sensor 23 will detect the external wind direction and wind speed in real time, and transmit the data to the main control unit 9, and the data is displayed on the terminal and the display screen 17.
The adaptability that carries out according to actual demand all is in the protection scope of the utility model.
It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. The utility model provides a gas sensing module, its characterized in that includes gas sensor, protective housing and is used for the gaseous heating temperature control board of stoving, gas sensor sets up in protective housing's the inner chamber, the inner chamber is provided with intake pipe and outlet duct, the setting of heating temperature control board is in protective housing is last, and form the heating drying zone in the inner chamber, the terminal gas port of intake pipe is located in the heating drying zone, the heating temperature control board is connected with the main control unit electricity.
2. The gas sensing module of claim 1, wherein a terminal caliber of the inlet tube is smaller than a starting end caliber, and a starting end caliber of the outlet tube is smaller than a terminal caliber.
3. The gas sensing module of claim 1, wherein the beginning port of the outlet tube is located in the heat drying zone.
4. An ambient air quality monitoring micro-station applying the gas sensing module of any one of claims 1-3, it is characterized by comprising a box body, the main control unit, a control switch, at least one gas sensing module, an air inlet pipeline and a standard gas pipeline, the main control unit, the control switch and the gas sensing module are all arranged in the box body, one end of the air inlet pipeline extends out of the box body and is communicated with the outside atmosphere, the other end of the air inlet pipeline is communicated with the air inlet pipe through a three-way valve, the air inlet pipeline is provided with an air pump, the air outlet pipeline is communicated with the outside atmosphere through an air outlet pipeline, the gas sensor and the control switch are electrically connected with the main control unit, one end of the gas marking pipeline extends out of the box body, and the other end of the gas marking pipeline is communicated with the gas inlet pipe through a three-way valve.
5. The ambient air quality monitoring micro station according to claim 4, wherein a wireless communication antenna for transmitting data to a terminal device is arranged outside the box body, a display screen for displaying measured data is arranged on the main control unit, and a glass window is arranged at a position of the box body corresponding to the display screen.
6. The ambient air quality monitoring micro-station according to claim 4, wherein a first filter for steam-water separation and large particle dust removal is arranged at the air inlet end of the air inlet pipeline, and a second filter for filtering fine particles is arranged between the air suction pump and the air inlet pipe.
7. The ambient air quality monitoring micro-station of claim 6, wherein the suction pump is a PWM wave diaphragm pump.
8. The micro station for monitoring the quality of the ambient air according to claim 4, wherein the box body is provided with an air inlet corresponding to the position of the main control unit and an air outlet corresponding to the air inlet.
9. The ambient air quality monitoring micro-station according to claim 4, wherein a wind speed and direction sensor for judging the direction of a pollution source is arranged at the top of the box body.
10. The micro station for monitoring the quality of the ambient air as claimed in claim 9, wherein the wind speed and direction sensor is disposed at one side of the top of the box body through a bracket, and the bracket is bent away from the central axis of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220253391.8U CN216847724U (en) | 2022-02-08 | 2022-02-08 | Gas sensing module and environmental air quality monitoring micro station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220253391.8U CN216847724U (en) | 2022-02-08 | 2022-02-08 | Gas sensing module and environmental air quality monitoring micro station |
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| Publication Number | Publication Date |
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| CN216847724U true CN216847724U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220253391.8U Active CN216847724U (en) | 2022-02-08 | 2022-02-08 | Gas sensing module and environmental air quality monitoring micro station |
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| CN (1) | CN216847724U (en) |
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