CN221100678U - Control module of gridding micro-station on-site calibration device - Google Patents
Control module of gridding micro-station on-site calibration device Download PDFInfo
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- CN221100678U CN221100678U CN202322873148.3U CN202322873148U CN221100678U CN 221100678 U CN221100678 U CN 221100678U CN 202322873148 U CN202322873148 U CN 202322873148U CN 221100678 U CN221100678 U CN 221100678U
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- 239000000443 aerosol Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 13
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 2
- 238000012938 design process Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 64
- 239000003570 air Substances 0.000 description 52
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a control module of a gridding micro-station on-site calibration device, which comprises an aerosol calibration module, a zero air module, a standard gas calibration module and a main control unit, wherein the zero air module is connected with the standard gas calibration module. The device has more factor calibration, is suitable for various miniature gas monitoring stations, can freely select and match the gas calibration part, can calibrate a plurality of unusual gas sensors, and has good compatibility. The multiple modules are integrated into one device, so that the device is convenient to carry, various complicated gas calibration can be carried out by clicking a screen, and the error probability caused by manpower is reduced. Easy maintenance, flexible design, and normal operation can be realized by only replacing another module when a fault occurs. If the scheme is required to be changed in the design process, only the modules in the scheme are required to be changed, and the whole power supply circuit is not required to be modified.
Description
Technical Field
The utility model relates to the technical field of calibration devices, in particular to a control module of a gridding micro-station on-site calibration device.
Background
The popularity of electrochemical gas sensors can be attributed to their linear output, low power consumption requirements and good resolution. Furthermore, once calibrated according to the known concentration of the target gas, the repeatability and accuracy of its measurement is also very good. Technological developments over decades have allowed these sensors to provide very good selectivity for specific gas types.
Because of their numerous advantages, electrochemical sensors have been used for industrial applications (e.g., the detection of toxic gases for worker safety). The operational economics of these sensors facilitate the deployment of regional toxic gas monitoring systems, ensuring safe environmental conditions for personnel in the mining, chemical industry, biogas plant, food production, pharmaceutical industry, etc. Although the detection technology itself is continually advancing, the basic operating principle and the inherent disadvantages of electrochemical gas detection have not been altered since the advent of such detection. Typically, electrochemical sensors have a limited shelf life, typically six months to one year. Aging of the sensor can also have a significant impact on its long-term performance. Sensor manufacturers typically specify that sensor sensitivity can drift by up to 20% per year. In addition, while target gas selectivity has improved significantly, the sensor still has cross-sensitivity issues with other gases, leading to increased chances of measurement interference and reading errors. Sensor performance is also temperature dependent and temperature compensation must be done internally.
The current miniature air monitoring station is widely used in the gridding accurate monitoring application of an industrial park, various applications of the gridding monitoring system are all based on data, and the problems of zero drift, time drift, temperature drift and the like of a sensor exist to a certain extent, so that the reliability of the data is questioned by in-industry experts and users.
The micro air monitoring station is calibrated at regular intervals, so that the laboratory calibration of factory leaving is common at present, sensor equipment is put into a professional laboratory, standard gas with fixed concentration is adopted for calibration, qualified sensors are screened out, and basic factory leaving technical requirements of the micro air monitoring station are met. And the part of the park adopts transmission calibration, and utilizes national standard method calibration equipment carried by the mobile monitoring vehicle to carry out on-line comparison, verification and calibration on sensor data in a certain range.
Because the equipment is in an outdoor long-term unattended operation environment, obviously, the conventional laboratory calibration cannot replace online calibration work, and the transfer calibration of a mobile monitoring vehicle is utilized, so that the equipment is limited by the installation geographic position of a site in many cases, the floor height is high, and the monitoring vehicle is difficult to approach accurate calibration
Disclosure of utility model
The utility model aims to provide a control module of a gridding micro-station on-site calibration device, which is used for solving the technical problems in the background technology.
The control module of the gridding micro-station on-site calibration device comprises an aerosol calibration module, a zero air module, a standard gas calibration module and a main control unit, wherein the zero air module is connected with the standard gas calibration module;
The aerosol calibration module comprises a drying device, an air pump, a particle generator, a particle detection device PSM16, filter cotton, an air pump and a first flow guide component arranged between the particle generator and the particle detection device PSM16, which are sequentially arranged;
The standard gas calibration module comprises a plurality of standard gas storage devices and a 1L flowmeter which are sequentially arranged, wherein the standard gas calibration device is connected with a second flow guide assembly arranged between the 1L flowmeter, the zero air module is arranged at a 10L flowmeter, and the 1L flowmeter and the 10L flowmeter are connected to a Y-shaped tee joint together.
In a preferred embodiment, the first diversion component comprises a three-way electromagnetic valve and two T-shaped three-way heads, wherein the three-way electromagnetic valve is connected with the particle generator, the two T-shaped three-way heads are connected with the three-way electromagnetic valve, and one T-shaped three-way head is connected with the particle detection equipment PSM16.
In a preferred embodiment, each of said target gas storage means stores a target gas.
In a preferred embodiment, the standard gas calibration module further comprises an ozone generating device comprising a low pressure mercury lamp and an ultraviolet photometer.
In a preferred embodiment, the second diversion assembly comprises a plurality of air valves and seven-way heads, wherein the air valves are in one-to-one correspondence with the ozone generating device and the standard gas storage devices, the seven-way heads are positioned behind the air valves, and the 1L flowmeter is connected with the seven-way heads.
In a preferred embodiment, the zero air module comprises an air compressor, a copper pipe, a filter, a safety valve, a 6L air storage tank, a pressure control module and a filter which are sequentially arranged, wherein a four-way valve is arranged behind the filter and is respectively connected with a seven-way head and a 10L flowmeter, and an air chamber of an ultraviolet photometer is arranged in a communicating manner.
The technical scheme of the utility model has the beneficial effects that:
1. The device has more factor calibration, is suitable for various miniature gas monitoring stations, can freely select and match the gas calibration part, can calibrate a plurality of unusual gas sensors, and has good compatibility.
2. The multiple modules are integrated into one device, so that the device is convenient to carry, various complicated gas calibration can be carried out by clicking a screen, and the error probability caused by manpower is reduced.
3. Easy maintenance, flexible design, and normal operation can be realized by only replacing another module when a fault occurs. If the scheme is required to be changed in the design process, only the modules in the scheme are required to be changed, and the whole power supply circuit is not required to be modified.
Drawings
Figure 1 is a functional diagram of the present utility model,
Figure 2 is a diagram of a control module according to the utility model,
FIG. 3 is a block diagram of a control module according to the present utility model.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the present utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
As shown in fig. 1-3, a control module of a gridding micro-station on-site calibration device according to the technical scheme of the utility model comprises an aerosol calibration module, a zero air module, a standard gas calibration module and a main control unit, wherein the zero air module is connected with the standard gas calibration module. The aerosol calibration module and the standard gas calibration module are used for calibrating different electrochemical sensors, wherein the aerosol calibration module is used for calibrating sensors for detecting particulate matters, and the standard gas calibration module is used for calibrating common gases such as sulfur dioxide, carbon monoxide, nitric oxide, nitrogen dioxide, voc and the like. The zero air module is used for calibrating zero point of the air quality miniature monitoring station, can wash the air pipe loop when calibrating different electrochemical gas sensors, and can dispense different flow rate gases to control the concentration of the standard gas through the 10L flowmeter.
The aerosol calibration module comprises a drying device, an air pump, a particle generator, a particle detection device PSM16, filter cotton, an air pump and a first flow guide component arranged between the particle generator and the particle detection device PSM16, wherein the drying device, the air pump, the particle generator, the particle detection device PSM16, the filter cotton and the air pump are sequentially arranged. The first flow guiding assembly comprises a three-way electromagnetic valve and two T-shaped three-way heads, the three-way electromagnetic valve is connected with the particle generator, the two T-shaped three-way heads are connected with the three-way electromagnetic valve, and one T-shaped three-way head is connected with particle detection equipment PSM16.
When the scheme is used for calibration, the ambient air A is taken, the water is removed by drying through the filtering device, and the air with almost zero aerosol concentration is output. Then the air is pumped to the particle generator by the air pump, and the particle generator emits aerosol with corresponding concentration, and because the air flow rate of the particle generator is very fast, in order to be suitable for various particle detection instruments, a T-shaped three-way head is adopted, so that redundant gas is discharged into the air. And after the detection of the gas passing through the particle detection equipment PSM16 is finished, filtering out particles through filter cotton, and protecting a post-stage air pump. When the concentration of the particle generator reaches the concentration required by calibration and is stable, the main control unit switches the three-way electromagnetic valve to transfer the gas path generated by the particle generator to the particle calibration loop for calibrating the particles.
The standard gas calibration module comprises a plurality of standard gas storage devices and a 1L flowmeter which are sequentially arranged, wherein the standard gas calibration device is connected with a second flow guide assembly arranged between the 1L flowmeter, the zero air module is arranged at a 10L flowmeter, and the 1L flowmeter and the 10L flowmeter are connected to a Y-shaped tee joint together. Each of the target gas storage devices stores a target gas. The standard gas calibration module further comprises an ozone generating device, wherein the ozone generating device comprises a low-pressure mercury lamp and an ultraviolet photometer. The second flow guiding component comprises a plurality of air valves and seven-way heads, the air valves are in one-to-one correspondence with the ozone generating device and the standard gas storage devices, the seven-way heads are positioned behind the air valves, and the 1L flowmeter is connected with the seven-way heads.
When the scheme is used for calibration, the required standard gas, such as 0.35L of 0.5PPM nitrogen dioxide, 0.35L of 0.5PPM sulfur dioxide, 0.35L of 50PPM carbon monoxide and 0.35L of 1PPM isobutene, is taken, and the main control unit inputs the standard gas into the seven-way head through the control air valve to select the required gas for standard gas and dilution. Ozone gas can not be reserved because of easy decomposition, so the ozone gas needs to be prepared on site. When the nitrogen dioxide gas is required to be calibrated, the air valves behind the nitrogen dioxide gas channels are opened, the air valves behind the other gas channels of the seven-way head are all closed, the main control unit outputs the required gas flow rate through communication control with the 1L mass flowmeter, and meanwhile, the gas with different flow rates can be matched with the 10L flowmeter to control the concentration of the standard gas. The gas is output to the equipment to be calibrated or the gas sensor through the Y-shaped tee joint. Sulfur dioxide, carbon monoxide and isobutene are all calibrated by adopting the distribution logic.
The zero air module comprises an air compressor, a copper pipe, a filter, a safety valve, a 6L air storage tank, a pressure control module and a filter which are sequentially arranged, wherein a four-way valve is arranged behind the filter and is respectively connected with a seven-way head and a 10L flowmeter, and an air chamber of an ultraviolet photometer is arranged in a communicating manner.
When the scheme is used for calibration, the ambient air B is taken, and the air is forcefully sucked in through the air compressor, and passes through the copper pipe and the water filter, so that moisture in the air is removed. The zero air output by the 6L air storage tank is pressurized and matched with the pressure control module, under the control of the 10L mass flowmeter, the zero air with constant flow can be output, and the filter can remove nitrogen oxides, ozone, carbon monoxide, sulfur dioxide and hydrocarbons in the air.
In the device, the particle generator and the particle detection equipment PSM16 communicate with the main control unit to inform real-time data, the main control unit performs data screening operation, the low-pressure mercury lamp irradiates on and off, and the ultraviolet photometer is also controlled by the main control unit in real-time communication. The air compressor, the air pump, the valves, the 1L mass flowmeter and the 10L mass flowmeter are all provided with a main control unit which is opened or closed during operation. The main control unit displays the state required to be controlled everywhere on the screen, a user can input the type and the concentration of the standard gas carried by the user through the screen, then clicks a certain type of calibration on the screen, and then the main control unit can control different gas loop actions by opening and closing the corresponding gas valve and pump to realize the calibration.
When the device is used, various gas marking cylinders brought are connected to corresponding gas pipes, the device is electrified, a user inputs the type and concentration of the carried gas cylinder by clicking a screen, the factor to be calibrated and the factor concentration to be calibrated are required, then the calibration is performed by clicking one key on the screen, the control module controls the gas marking to occur, the concentration of the gas marking is checked, an air pump valve is opened, the gas is input into a corresponding gas loop, when the gas is switched, the gas loop is automatically flushed by zero air, the flushing is prompted on the screen, no operation is performed, and when the device calibration is completed, the user is prompted to complete the calibration.
It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (6)
1. The utility model provides a control module of gridding micro-station on-the-spot calibrating device which characterized in that: the device comprises an aerosol calibration module, a zero air module, a standard gas calibration module and a main control unit, wherein the zero air module is connected with the standard gas calibration module;
The aerosol calibration module comprises a drying device, an air pump, a particle generator, a particle detection device PSM16, filter cotton, an air pump and a first flow guide component arranged between the particle generator and the particle detection device PSM16, which are sequentially arranged;
The standard gas calibration module comprises a plurality of standard gas storage devices and a 1L flowmeter which are sequentially arranged, wherein the standard gas calibration device is connected with a second flow guide assembly arranged between the 1L flowmeter, the zero air module is arranged at a 10L flowmeter, and the 1L flowmeter and the 10L flowmeter are connected to a Y-shaped tee joint together.
2. The control module of a gridded micro station field calibration apparatus of claim 1, wherein: the first flow guiding assembly comprises a three-way electromagnetic valve and two T-shaped three-way heads, the three-way electromagnetic valve is connected with the particle generator, the two T-shaped three-way heads are connected with the three-way electromagnetic valve, and one T-shaped three-way head is connected with particle detection equipment PSM16.
3. The control module of a gridded micro station field calibration apparatus of claim 1, wherein: each of the target gas storage devices stores a target gas.
4. The control module of a gridded micro station field calibration apparatus of claim 1, wherein: the standard gas calibration module further comprises an ozone generating device, wherein the ozone generating device comprises a low-pressure mercury lamp and an ultraviolet photometer.
5. The control module of a gridded micro station field calibration apparatus of claim 1, wherein: the second flow guiding component comprises a plurality of air valves and seven-way heads, the air valves are in one-to-one correspondence with the ozone generating device and the standard gas storage devices, the seven-way heads are positioned behind the air valves, and the 1L flowmeter is connected with the seven-way heads.
6. The control module of a gridded micro station field calibration apparatus of claim 5, wherein: the zero air module comprises an air compressor, a copper pipe, a filter, a safety valve, a 6L air storage tank, a water tank and a water tank which are sequentially arranged,
The pressure control module and the filter are arranged behind the filter, and the four-way valve is respectively connected with the seven-way head and the 10L flowmeter and communicated with an air chamber provided with an ultraviolet photometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322873148.3U CN221100678U (en) | 2023-10-25 | 2023-10-25 | Control module of gridding micro-station on-site calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322873148.3U CN221100678U (en) | 2023-10-25 | 2023-10-25 | Control module of gridding micro-station on-site calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221100678U true CN221100678U (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322873148.3U Active CN221100678U (en) | 2023-10-25 | 2023-10-25 | Control module of gridding micro-station on-site calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221100678U (en) |
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2023
- 2023-10-25 CN CN202322873148.3U patent/CN221100678U/en active Active
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