CN213364668U - System for remotely acquiring VOCs (volatile organic compounds) samples in air in real time and analyzing and monitoring VOCs samples on line - Google Patents
System for remotely acquiring VOCs (volatile organic compounds) samples in air in real time and analyzing and monitoring VOCs samples on line Download PDFInfo
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- CN213364668U CN213364668U CN202022514715.2U CN202022514715U CN213364668U CN 213364668 U CN213364668 U CN 213364668U CN 202022514715 U CN202022514715 U CN 202022514715U CN 213364668 U CN213364668 U CN 213364668U
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- 238000012544 monitoring process Methods 0.000 title claims description 23
- 238000004458 analytical method Methods 0.000 claims abstract description 60
- 238000005070 sampling Methods 0.000 claims abstract description 42
- 238000004140 cleaning Methods 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims description 56
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
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Abstract
The utility model relates to a sample collection and analysis technical field, concretely relates to VOCs sample long-range real-time collection and online analysis monitored control system in air, including sample collection module, sample analysis module, sampling jar cleaning module and control module, sample collection module includes the sampling pipe, sets up the solenoid valve on the sampling pipe, and the external first port of first three-way valve of solenoid valve, the second port of first three-way valve are connecting sixteen ways diverter valve through the pipeline, and the port of sixteen ways diverter valve is external third Suma jar and second Suma jar in proper order through the pipeline; the utility model adopts the mode that the sample analysis module and the sample collection module are respectively carried out at the same time, and the sample analysis module samples the sample at the same time when carrying out sample analysis, so that the sample under analysis can be reserved; meanwhile, samples in the analysis process can be collected, the concentration information of the samples in the time period can be obtained, and the completeness of the sample information can be guaranteed.
Description
Technical Field
The utility model relates to a sample collection and analysis technical field, concretely relates to long-range real-time acquisition of VOCs sample and online analysis monitored control system in air.
Background
Monitoring of Volatile Organic Compounds (VOCs) is a key item of air quality monitoring, and the traditional VOCs monitoring method is characterized in that workers arrive at a sampling place to collect air samples and then return the air samples to a laboratory for analysis, so that labor consumption and long time consumption are realized. If the remote control sampling can be realized and the remotely collected samples can be remotely analyzed on line, the significance for environmental protection departments and enterprises to monitor the environmental air quality in real time is profound, and the great result is achieved with half the effort. The current situation is as follows: the equipment capable of remotely and remotely collecting the VOCs samples in the air is rare, and the sampling equipment cannot remotely analyze the concentration of the VOCs in the air samples in real time. In addition, although a small amount of on-line monitoring equipment is available on the market, the equipment is continuously operated for 24 hours all the time, and the equipment cannot be started, stopped and measured by random remote control. The existing remote control system only has a sampling function or an online analysis function, and has many disadvantages in practical application, for example, the existing online monitoring equipment on the market often cannot store samples in the monitoring process, once an analyst finds that the data is abnormal, the analyst cannot determine whether the data is caused by temporary fault of an instrument or the sample has problems, so that the accuracy of the data is lack of confidence; in addition, during the analysis of the sample by the on-line device, the device stops sample collection if an incident of environmental air pollution occurs and it is unknown how the ambient air concentration changes during this time.
Therefore, in order to more accurately know the real-time concentration change of the VOCs in the air, remote sampling and remote real-time analysis by a remote control system are needed. Aiming at the defects of the existing online equipment, a remote control system capable of simultaneously carrying out sample collection and online analysis is urgently needed, the synchronous collection of samples in the sample analysis process is ensured, and the accuracy of data monitoring is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the technical problem, the utility model aims to provide a: the system for remotely acquiring the VOCs in the air in real time and analyzing and monitoring the VOCs on line is provided, the synchronous acquisition of samples in the sample analysis process can be ensured, and the accuracy of data monitoring is improved.
The utility model discloses a solve the technical scheme that its technical problem adopted and do:
the system comprises a sample collection module, a sample analysis module, a sampling tank cleaning module and a control module, wherein the sample collection module comprises a sampling pipe, an electromagnetic valve is arranged on the sampling pipe, the electromagnetic valve is externally connected with a first port of a first three-way valve, a second port of the first three-way valve is connected with a sixteen-way switching valve through a pipeline, one port of the sixteen-way switching valve is sequentially and externally connected with a third Suma tank and a second Suma tank through a pipeline, the other port of the sixteen-way switching valve is connected with a third port of the second three-way valve through a pipeline, a second port of the second three-way valve is connected with a second port of the third three-way valve through a pipeline, a third port of the third three-way valve is connected with the first Suma tank, and a flow limiting valve is connected to a pipeline between the first port of the second three-way valve and the second port of the third three-way;
the sample analysis module comprises an automatic sample injector, the inlet end of the automatic sample injector is connected with the first three-way valve after being connected with the fourth three-way valve in series through a pipeline, the outlet end of the automatic sample injector is sequentially connected with the first-stage cold trap, the second-stage cold trap, the third-stage cold trap, the gas chromatograph and the mass spectrometer through pipelines, and the automatic sample injector is also respectively connected with the infrared gas detector, the sensor type gas detector and the PID gas detector.
The sample collection module is used for collecting samples, and the sample analysis module can collect the samples simultaneously during working, so that the samples are prevented from volatilizing and dissipating in the sample analysis process, the comprehensiveness of the collected samples is ensured, and the accuracy of data monitoring is improved.
The sampling pipe is used for transmitting an air sample, and an asbestos heating belt is adopted outside the sampling pipe for heating and accurate temperature control of a temperature controller. The pipeline is prevented from adsorbing gas samples, and the consistency of the collected samples and actual gas samples is guaranteed.
The sample analysis module is used for online analysis of an air sample and comprises an automatic sample injector and four different detection instruments, wherein the four detection instruments are respectively a gas chromatography-mass spectrometer, an infrared gas detector, a sensor type gas detector and a PID gas detector; the four analysis instruments can simultaneously detect samples, and relatively comprehensive sample composition information can be provided.
The sixteen-way switching valve is used for sequentially collecting a plurality of samples at different time, is provided with a plurality of Suma tanks in advance, converts and collects the next sample after collecting one sample, and can be used for collecting the samples at different time points when the concentration of VOCs changes.
The electromagnetic valve is used for controlling the switch of the gas circuit, and after receiving the remote signal, the electromagnetic valve is opened or closed, so that the timeliness and the representativeness of sampling are ensured.
The suma tank is used for storing samples, and the inner wall of the suma tank is subjected to inerting treatment, so that the samples can be stored for a long time.
The sampling tank cleaning module comprises a tank cleaning instrument, the tank cleaning instrument is externally connected with a molecular turbopump and a diaphragm pump respectively, the inlet end of the tank cleaning instrument is connected with a nitrogen bottle, and the outlet end of the tank cleaning instrument is connected with a first Suma tank. After the sample in the suma jar is analyzed, the jar cleaning instrument can clean the sample, so that the manual investment is reduced, and the sufficient number of suma jars can be used.
The control module include instrument data acquisition controller and relay, instrument data acquisition controller is connecting mass spectrograph, infrared gas detector, sensor formula gas detector and PID gas detector respectively, the external GPRS signal transmission ware of communication port of instrument data acquisition controller, GPRS signal transmission ware carries out the communication with cell-phone or computer mobile terminal and is connected, relay and solenoid valve electric connection.
The instrument data acquisition controller is used for detecting and acquiring: the gas chromatograph-mass spectrometer, the infrared gas detector, the sensor type gas detector and the PID gas detector, and controls the start and stop of the instruments. In the analysis process, the measurement result of each instrument is transmitted to the instrument data acquisition controller through a wireless signal, transmitted to the GPRS signal transmitter through the instrument data acquisition controller and finally fed back to the mobile phone or the computer mobile terminal.
The sampling tube is coated with an asbestos heating tape and connected with a temperature controller. The asbestos heating area can heat the sampling pipe, and the accurate accuse temperature of temperature controller helps the long-distance effective transmission of VOCs sample in the pipeline, avoids pipeline adsorbed gas sample, the sample that the guarantee was gathered and the uniformity of actual gas sample.
And the first port of the fourth three-way valve is communicated with the first port of the third three-way valve, the second port of the fourth three-way valve is communicated with the automatic sample injector, and the third port of the fourth three-way valve is communicated with the third port of the first three-way valve.
The utility model discloses can carry out the monitored control system of VOCs sample collection and online analysis in the air simultaneously, guarantee to carry out the collection of sample in step in sample analysis process to at any time with survey data transmission to cell-phone or computer, improve data monitoring's accuracy, ageing.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. because the utility model discloses a GPRS wireless network technique can long-range receipt cell-phone or computer mobile terminal signal, and the collection and the analysis of sample are carried out at any time in transmission sampling information, can guarantee ageing, representativeness and the simultaneity of gas sample analysis and collection.
2. The utility model adopts the mode that the sample analysis module and the sample collection module are respectively carried out at the same time, and the sample analysis module samples the sample at the same time when carrying out sample analysis, so that the sample under analysis can be reserved; meanwhile, samples in the analysis process can be collected, the concentration information of the samples in the time period can be obtained, and the completeness of the sample information can be guaranteed.
3. Because the utility model uses the sixteen-way switching valve to connect a plurality of gas collecting bags or the Suma tanks in advance, the sequential collection of a plurality of samples can be realized without temporarily replacing the gas collecting bags or the Suma tanks; and a sampling tank cleaning module is added, so that the used Permai jar can be cleaned on line, and enough sampling tanks can be ensured to be used.
4. Because the utility model discloses a multiple gas analysis instrument carries out the monitoring of different indexes, can realize the analysis of different polarity, different kind organic matters and the analysis of multiple inorganic matter.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a temperature controller; 2. an electromagnetic valve; 3. a first three-way valve; 4. a mass spectrometer; 5. a gas chromatograph; 6. a third-stage cold trap; 7. a secondary cold trap; 8. an infrared gas detector; 9. a sensor-type gas detector; 10. a PID gas detector; 11. an instrument data acquisition controller; 12. a GPRS signal transmitter; 13. a mobile terminal of a mobile phone or a computer; 14. a third three-way valve; 15. a first suma tank; 16. a diaphragm pump; 17. a nitrogen gas cylinder; 18. cleaning the tank; 19. a molecular turbo pump; 20. a flow-limiting valve; 21. a second suma tank; 22. a third suma tank; 23. sixteen-way switching valve; 24. a sampling tube; 25. a second three-way valve; 26. a fourth three-way valve; 27. an autosampler; 28. and a primary cold trap.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings:
example 1
As shown in figure 1, the system for remotely acquiring and online analyzing and monitoring VOCs samples in air comprises a sample acquisition module, a sample analysis module, a sampling tank cleaning module and a control module, wherein the sample acquisition module comprises a sampling pipe 24, an asbestos heating tape is coated outside the sampling pipe 24 and connected with a temperature controller 1, the asbestos heating tape can heat the sampling pipe 24, the temperature controller 1 accurately controls the temperature, the remote effective transmission of the VOCs samples in a pipeline is facilitated, the adsorption of gas samples by the pipeline is avoided, the consistency of the acquired samples and actual gas samples is ensured, an electromagnetic valve 2 is arranged on the sampling pipe 24, the electromagnetic valve 2 is externally connected with a first port of a first three-way valve 3, a second port of the first three-way valve 3 is connected with a sixteen-way switching valve 23 through a pipeline, one port of the sixteen way switching valve 23 is sequentially and externally connected with a third Suma tank 22 and a second Suma tank 21 through pipelines, the sixteen-way switching valve 23 is used for sequentially collecting a plurality of samples at different times, is provided with a plurality of suma tanks in advance, is converted and collects the next sample after collecting one sample, and can be used for collecting the suma tank samples at different time points when the concentration of VOCs is changed, the other port of the sixteen-way switching valve 23 is connected to the third port of the second three-way valve 25 through a pipeline, the second port of the second three-way valve 25 is connected to the second port of the third three-way valve 14 through a pipeline, the third port of the third three-way valve 14 is connected to the first suma tank 15, and the flow limiting valve 20 is connected to the pipeline between the first port of the second three-way valve 25 and the second port of the third three-way valve 14.
The sample analysis module comprises an autosampler 27, the inlet end of the autosampler 27 is connected with the first three-way valve 3 after being connected with the fourth three-way valve 26 in series through a pipeline, the first port of the fourth three-way valve 26 is communicated with the first port of the third three-way valve 14, the second port of the fourth three-way valve 26 is communicated with the autosampler 27, and the third port of the fourth three-way valve 26 is communicated with the third port of the first three-way valve 3. The outlet end of the automatic sample injector 27 is connected with a first-stage cold trap 28, a second-stage cold trap 7, a third-stage cold trap 6, a gas chromatograph 5 and a mass spectrometer 4 in sequence through pipelines, most of volatile organic compounds are monitored through the instruments, the automatic sample injector 27 is also connected with an infrared gas detector 8, a sensor type gas detector 9 and a PID gas detector 10 respectively, and the automatic sample injector 27 is connected with the infrared gas detector 8, so that part of volatile organic compounds with lower boiling points in a toxic chemical list preferentially registered in China can be monitored; the sensor type gas detector 9 is connected to the auto sampler 27 to measure substances such as ethane, propane, butane, ethylene, acetylene, etc. in the air; the PID gas detector 10 is connected by an auto-sampler 27 to monitor the TVOC index of total volatile organic compounds. The instrument can be used for monitoring various analysis indexes of samples directly collected from an air inlet pipeline or a Suma tank, and provides relatively comprehensive sample composition information.
The sampling tank cleaning module comprises a tank cleaning instrument 18, the tank cleaning instrument 18 is respectively externally connected with a molecular turbine pump 19 and a diaphragm pump 16, the inlet end of the tank cleaning instrument 18 is connected with a nitrogen cylinder 17, and the outlet end of the tank cleaning instrument 18 is connected with a first Suma tank 15. Through the evacuation effect of diaphragm pump 16 and molecule turbo pump 19 and the pressurization of nitrogen cylinder 17 effect of aerifing, with remaining VOCs sanitization in the suma jar, clear jar appearance 18 washs it promptly after the sample analysis in the suma jar finishes, reduces artifical input, guarantees that sufficient quantity's the suma jar can supply to use.
The control module comprises an instrument data acquisition controller 11 and a relay, the instrument data acquisition controller 11 is respectively connected with a mass spectrometer 4, an infrared gas detector 8, a sensor type gas detector 9 and a PID gas detector 10, a communication port of the instrument data acquisition controller 11 is externally connected with a GPRS signal transmitter 12, the GPRS signal transmitter 12 is in communication connection with a mobile phone or a computer mobile terminal 13, the equipment is connected with a voltage stabilizer or directly powered by a UPS (uninterrupted power supply) through mains supply, the relay is electrically connected with the electromagnetic valve 2, the electromagnetic valve 2 is used for controlling the on-off of a gas circuit of the sampling tube 24, concretely, the mobile phone or the computer mobile terminal 13 controls the on-off of a relay coil, and then controls the on-off of a relay contact which is connected with the electromagnetic valve 2 in series, and then controls the on-off of the electromagnetic valve 2, and.
The utility model discloses a use:
before sampling, the sampling pipe 24 is placed at a proper position, the relays and all instruments and equipment are connected with the mains supply, the GPRS signal transmitter 12 is installed and is connected to the mobile phone or the computer mobile terminal 13 through a wireless network, the cleaned Suma tank is connected to the sixteen-way switching valve 23 through the second three-way valve 25, the switch on the Suma tank is turned on, and the switch on the nitrogen cylinder 17 is turned on.
During analysis sample, air sample can be by sampling pipe 24 through first three-way valve 3, fourth three-way valve 26 directly gets into sample analysis module analysis, GPRS signal transmission ware 12 receives and starts temperature controller 1 after the sampling order that comes from cell-phone or computer mobile terminal 13 to send, sampling pipe 24 begins to heat to appropriate temperature rapidly, avoid pipeline adsorbed gas sample, the sample that the guarantee was gathered and the uniformity of actual gas sample, and put through the coil of relay, the contact closure of relay, solenoid valve 2 opens, the air sample who contains VOCs gets into sample analysis module, specifically do: under the power action of the automatic sample injector 27, the air sample sequentially passes through the electromagnetic valve 2, the first three-way valve 3 and the fourth three-way valve 26 from the sampling pipe 24 and then enters the automatic sample injector 27, and is divided into four paths after passing through the automatic sample injector 27, the four paths enter different analysis instruments to perform analysis of different indexes, and the first path is analysis of most of volatile organic compounds: the sample enters a first-stage cold trap 28, the temperature is reduced to-170 ℃, VOCs components, water and carbon dioxide in the sample are in a solid state at the moment, gaseous oxygen, argon and the like can be removed under the purging of high-purity nitrogen, then the first-stage cold trap 28 is heated to 10 ℃, water is in a liquid state at the moment and is left in the first-stage cold trap 28, the VOCs components are purged to a second-stage cold trap 7 by the high-purity nitrogen, the temperature of the second-stage cold trap 7 is-40 ℃, water is in a solid state at the moment, carbon dioxide is in a gaseous state, the VOCs components are in a liquid state or a solid state, and the high-purity nitrogen is purged; then the temperature of the second-stage cold trap 7 is raised to 230 ℃, the VOCs are gathered in the third-stage cold trap 6 by nitrogen purging in the pipeline, the gathering of the sample is completed, then the temperature of the third-stage cold trap 6 is raised rapidly, the VOCs sample is carried by carrier gas, enters the gas chromatograph 5 and is separated by a capillary column, and then is monitored by the mass spectrometer 4; the second path is that the sample enters the infrared gas detector 8 after passing through the automatic sample injector 27, and monitoring of a part of volatile organic compounds with lower boiling points in a toxic chemical list preferentially registered in China is completed; the third path is that the sample enters a sensor type gas detector 9 to detect substances such as ethane, propane, butane, ethylene, acetylene and the like; and a fourth path of sample utilizes a photoionization PID gas detector 10 to detect total volatile organic compound TVOC indexes, and the detection results of all analysis instrument parts in the analysis process are transmitted to an instrument data acquisition controller 11 through wireless signals, transmitted to a GPRS signal transmitter 12 through the instrument data acquisition controller 11 and finally fed back to a mobile phone or a computer mobile terminal 13.
The gas sample can be collected in the Suma tank at the same time except for directly entering the sample analysis module, and the air sample containing VOCs directly enters the first Suma tank 15 and a plurality of Suma tanks (a second Suma tank 21 and a third Suma tank 22) connected to the sixteen switching valves 23 through the first three-way valve 3, the sixteen switching valves 23, the second three-way valve 25 and the third three-way valve 14 in sequence under the action of the negative pressure and atmospheric pressure differential pressure of the Suma tank to complete instantaneous sampling; or the gas enters the first suma tank 15 and a plurality of suma tanks (a second suma tank 21 and a third suma tank 22) connected with the sixteen-way switching valve 23 through the first three-way valve 3, the second three-way valve 25, the flow limiting valve 20 and the third three-way valve 14, and the collection of gas samples in the suma tanks within a specific time period is completed; when the suma tank finishes the sample collection from negative pressure (gauge pressure is about-0.1 MPa) to one atmosphere (gauge pressure is 0MPa), the sixteen-way switching valve 23 is switched to continue to collect the sample. After the sample analysis module completes the analysis, the remote control autosampler 27 starts to collect the samples from the suma tank for analysis, and at this time, the samples in the first suma tank enter the analysis device through the autosampler 27 after passing through the third three-way valve 14 and the fourth three-way valve 26, so that the monitoring of each index is completed. So can gather the sample simultaneously in sample analysis process to follow-up analysis carries out, and then learns the ambient air sample concentration change condition this moment in this period of time of equipment analysis and test, guarantees the perfectness of data, the emergence of the unexpected ambient air pollution incident of response leisurely.
After the sample collection and analysis is completed, the online device enters a standby mode, the electromagnetic valve 2 is closed, and the third three-way valve 14 is closed. At the moment, the sampling tank cleaning module enters a working mode, the pressure in the tank is pumped to about 13.8kPa under the pumping action of a diaphragm pump 16 connected with a tank cleaning instrument 18, then the tank is continuously vacuumized to about 66.5Pa under the action of a molecular turbine pump 19, high-purity nitrogen is filled, the high-purity nitrogen enters the tank through the tank cleaning instrument 18 and is inflated to a high-pressure (about 0.14MPa), and then the diaphragm pump 16 and the molecular turbine pump 19 sequentially vacuumize the tank. And cleaning the Suma tank in the repeated air pumping-inflating-air pumping process and finally keeping the Suma tank in a high vacuum (less than 6.65Pa) state for later use.
After all work is completed, the online equipment and the sampling tank cleaning module can be closed through the GPRS signal transmitter 12.
Claims (5)
1. A remote real-time collection and online analysis monitoring system for VOCs samples in air comprises a sample collection module, a sample analysis module, a sampling tank cleaning module and a control module, and is characterized in that the sample collection module comprises a sampling pipe (24), an electromagnetic valve (2) is arranged on the sampling pipe (24), the electromagnetic valve (2) is externally connected with a first port of a first three-way valve (3), a second port of the first three-way valve (3) is connected with a sixteen-way switching valve (23) through a pipeline, one port of the sixteen-way switching valve (23) is sequentially externally connected with a third Suma tank (22) and a second Suma tank (21) through pipelines, the other port of the sixteen-way switching valve (23) is connected with a third port of a second three-way valve (25) through a pipeline, a second port of the second three-way valve (25) is connected with a second port of a third-way valve (14) through a pipeline, a third port of the third-way valve (14) is connected with a first Suma tank, a flow limiting valve (20) is connected to a pipeline between a first port of the second three-way valve (25) and a second port of the third three-way valve (14);
the sample analysis module comprises an automatic sample injector (27), wherein the inlet end of the automatic sample injector (27) is communicated with the first three-way valve (3) after being connected with the fourth three-way valve (26) in series through a pipeline, the outlet end of the automatic sample injector (27) is sequentially connected with a first-stage cold trap (28), a second-stage cold trap (7), a third-stage cold trap (6), a gas chromatograph (5) and a mass spectrometer (4) through pipelines, and the automatic sample injector (27) is further connected with an infrared gas detector (8), a sensor type gas detector (9) and a PID gas detector (10) respectively.
2. The system for remotely acquiring and online analyzing and monitoring VOCs samples in air according to claim 1, wherein the sampling tank cleaning module comprises a tank cleaning instrument (18), the tank cleaning instrument (18) is respectively externally connected with a molecular turbine pump (19) and a diaphragm pump (16), the inlet end of the tank cleaning instrument (18) is connected with a nitrogen cylinder (17), and the outlet end of the tank cleaning instrument (18) is connected with the first Suma tank (15).
3. The system for remotely acquiring, analyzing and monitoring VOCs samples in air in real time and on-line according to claim 1, wherein the control module comprises an instrument data acquisition controller (11) and a relay, the instrument data acquisition controller (11) is respectively connected with the mass spectrometer (4), the infrared gas detector (8), the sensor type gas detector (9) and the PID gas detector (10), a communication port of the instrument data acquisition controller (11) is externally connected with a GPRS signal transmitter (12), the GPRS signal transmitter (12) is in communication connection with a mobile phone or a computer mobile terminal (13), and the relay is electrically connected with the electromagnetic valve (2).
4. The system for remotely acquiring and online analyzing and monitoring VOCs samples in air according to claim 1, wherein the sampling tube (24) is coated with asbestos heating tape and connected with the temperature controller (1).
5. The system for remote real-time collection and online analytical monitoring of samples of airborne VOCs as claimed in claim 1, wherein a first port of a fourth three-way valve (26) is in communication with a first port of a third three-way valve (14), a second port of the fourth three-way valve (26) is in communication with an autosampler (27), and a third port of the fourth three-way valve (26) is in communication with a third port of the first three-way valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514715.2U CN213364668U (en) | 2020-11-04 | 2020-11-04 | System for remotely acquiring VOCs (volatile organic compounds) samples in air in real time and analyzing and monitoring VOCs samples on line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514715.2U CN213364668U (en) | 2020-11-04 | 2020-11-04 | System for remotely acquiring VOCs (volatile organic compounds) samples in air in real time and analyzing and monitoring VOCs samples on line |
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| CN213364668U true CN213364668U (en) | 2021-06-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848094A (en) * | 2021-10-26 | 2021-12-28 | 丹东瑞特科技有限公司 | Multifunctional full-automatic gas sampling system |
| CN113899598A (en) * | 2021-09-25 | 2022-01-07 | 杭州谱育科技发展有限公司 | Atmospheric navigation monitoring system and method |
-
2020
- 2020-11-04 CN CN202022514715.2U patent/CN213364668U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899598A (en) * | 2021-09-25 | 2022-01-07 | 杭州谱育科技发展有限公司 | Atmospheric navigation monitoring system and method |
| CN113848094A (en) * | 2021-10-26 | 2021-12-28 | 丹东瑞特科技有限公司 | Multifunctional full-automatic gas sampling system |
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