CN104914198B - Gas automatic sampling device and its using method - Google Patents
Gas automatic sampling device and its using method Download PDFInfo
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- CN104914198B CN104914198B CN201410086569.4A CN201410086569A CN104914198B CN 104914198 B CN104914198 B CN 104914198B CN 201410086569 A CN201410086569 A CN 201410086569A CN 104914198 B CN104914198 B CN 104914198B
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Abstract
The present invention relates to the technical field of detector, more particularly to a kind of gas automatic sampling device and its using method.The gas automatic sampling device of the present invention, including first choice valve, switching valve and the second selector valve, the first choice valve can be connected with the switching valve, the first carrier gas, air or vavuum pump, the switching valve can be connected with the second carrier gas, some detection air inlets, some quantitative loops or second selector valve, and second selector valve can be connected with air or gas producing device.Compared with prior art, the gas automatic sampling device of the present invention is when using airbag or syringe sampling, it is full-automatic sample introduction, intervene without the need for personnel, sample size is accurate, reproducible, using, easy to maintenance, can be widely applied to the fields such as environmental monitoring center, disease prevention and control center, prevention and cure of occupational disease, petrochemical industry.
Description
Technical field
The present invention relates to the technical field of detector, more particularly to a kind of gas automatic sampling device and its using method.
Background technology
Environmental air pollution is increasingly serious, and people are to air quality requirements also more and more higher, so the matter to surrounding air
Amount monitoring is also more and more, typically gas is detected using gas chromatograph.At present, the automation of gas chromatograph
Gas sampling pattern has various ways, and on market, comparative maturity has headspace sampling, thermal desorption sample introduction, digital filling input mode
Deng being each applied to different fields.Use for the test of national standard HJ/T38 NMHC, other conventional gas detections
Airbag or the project of syringe sampling, most of detection unit is all that workload is very big using hand sampling mode, and operates
Trouble.
Content of the invention
Present invention aim at a kind of gas automatic sampling device is provided, to solve to adopt gas chromatograph in prior art
Gas is detected, during using airbag or syringe sampling, need to adopt hand sampling mode, workload is very big, and operates
Troublesome technical matters.
Another object of the present invention is to the using method of above-mentioned gas automatic sampling apparatus is provided, to solve prior art
Middle gas is detected using gas chromatograph, during using airbag or syringe sampling, need to adopt hand sampling mode, work
Amount is very big, and the technical matters of troublesome poeration.
The object of the invention is achieved through the following technical solutions：
A kind of gas automatic sampling device, including first choice valve, switching valve and the second selector valve, the first choice valve
Can be connected with the switching valve, the first carrier gas, air or vavuum pump, the switching valve can be with the second carrier gas, some detection air inlets
The connection of mouth, some quantitative loops or second selector valve, second selector valve can be connected with air or gas producing device.The present invention
Gas automatic sampling device using airbag or during syringe sampling, be full-automatic sample introduction, intervene without the need for personnel, sample size
Accurately, reproducible, using, easy to maintenance, can be widely applied to environmental monitoring center, disease prevention and control center, occupational disease
The fields such as preventing and treating, petrochemical industry.
In the preferred embodiment of the invention, the switching valve includes six-way valve, ten-way valve or ten two-port valves.Logical using six
Valve, ten-way valve or ten two-port valves can carry out state switching.
In the preferred embodiment of the invention, the gas producing device includes some gas production bags, and second selector valve can be with
Any one gas production bag connection.
In the preferred embodiment of the invention, second carrier gas, the detection air inlet and the quantitative loop are two
Individual.Detected using two quantitative loop sample introductions, two results can be analyzed, to evaluate the accuracy of detection.
The using method of above-mentioned gas automatic sampling device, comprises the following steps：
A. the first choice valve is made to be connected with the vavuum pump and the switching valve, the switching valve and the quantitative loop
Connect with second selector valve, second selector valve is connected with the gas producing device, starting the vavuum pump makes described adopting
Gaseous sample in device of air is entered in the quantitative loop；
B. the first choice valve is disconnected with the vavuum pump, and make the first choice valve and atmosphere；Make institute
State the second selector valve to disconnect with the gas producing device, and make second selector valve and atmosphere, the quantitative loop and air
Communicate, make the quantitative loop balance is issued in atmospheric pressure state；After atmospheric pressure balance, the gas sample in quantitative loop is ensure that
Product volume accurate so that every time the repeatability of sample introduction is protected.
C. disconnect the switching valve and the first choice valve and second selector valve, make the switching valve with described
Detection air inlet and second carrier gas connection, being passed through the second carrier gas makes the second carrier gas convey the gaseous sample in the quantitative loop
Detector is entered from the detection air inlet to be detected；
D. the switching valve is connected with the first choice valve and second selector valve, make the first choice valve with
The first carrier gas connection, second selector valve and atmosphere, being passed through the first carrier gas makes the first carrier gas through the described first choosing
Select valve and enter the switching valve, then second selector valve is entered after the quantitative loop, enter in air with to pipeline afterwards
It is rinsed；To enter the second carrier gas enter detector through the detection air inlet after the switching valve to rush pipeline
Wash.The gas automatic sampling device of the present invention, when using airbag or syringe sampling, is full-automatic sample introduction, dry without the need for personnel
In advance, sample size is accurate, reproducible, using, easy to maintenance, can be widely applied to environmental monitoring center, in prevention and control of diseases
The fields such as the heart, prevention and cure of occupational disease, petrochemical industry.
In the preferred embodiment of the invention, in step b, the time that the quantitative loop is communicated with air is 1-3
Minute.The time that quantitative loop is communicated with air is 1-3 minutes, and the quantitative loop can be caused to be issued to balance in atmospheric pressure state,
And the sample in quantitative loop is not by atmosphere pollution.
Compared with prior art, the present invention has following beneficial effect：
1st, gas automatic sampling device of the invention is when using airbag or syringe sampling, is full-automatic sample introduction, nothing
Need personnel to intervene, sample size is accurate, reproducible, using, easy to maintenance, can be widely applied to environmental monitoring center, disease pre-
The fields such as anti-control centre, prevention and cure of occupational disease, petrochemical industry；
2nd, gas automatic sampling device of the invention achieves the standardization of gas sampling mode, while also possess batch entering
The function of sample, provides a favourable instrument for vast gas-monitoring worker, and analyze data is also more reliable and more stable, meaning
Great.
Description of the drawings
Fig. 1 is the schematic diagram when quantitative loop of the gas automatic sampling device of the present invention is filled by sample；
Fig. 2 is the pressure balanced schematic diagram of quantitative loop of the gas automatic sampling device of the present invention；
Fig. 3 is the schematic diagram of the quantitative loop sample introduction of the gas automatic sampling device of the present invention；
Fig. 4 is the schematic diagram that the gas automatic sampling device of the present invention carries out flushing of pipeline；
Fig. 5 is the structural representation of the gas production bag of the gas automatic sampling device of the present invention.
Specific embodiment
Present invention is generally directed to existing detected to gas using gas chromatograph, using airbag or syringe sampling
When, hand sampling mode need to be adopted, workload is very big, and the defect of troublesome poeration, and the structure of gas sample injection device is carried out
Redesign, when the gas automatic sampling device of the present invention is made using airbag or syringe sampling, be full-automatic sample introduction, nothing
Need personnel to intervene, sample size is accurate, reproducible, using, easy to maintenance, can be widely applied to environmental monitoring center, disease pre-
The fields such as anti-control centre, prevention and cure of occupational disease, petrochemical industry.
Below in conjunction with the preferred embodiments of the present invention, the present invention will be further described.
Embodiment 1
Fig. 1-4 are referred to, the gas automatic sampling device of the present invention, including first choice valve 1, switching valve 2 and the second choosing
Valve 3 is selected, first choice valve 1 can be connected with switching valve 2, the first carrier gas, air or vavuum pump, if switching valve 2 can be with the second carrier gas
Dry detection air inlet 22, some quantitative loops 21 or the second selector valve 3 connect, and the second selector valve 3 can be connected with air or gas producing device
Connect.The gas automatic sampling device of the present invention, when using airbag or syringe sampling, is full-automatic sample introduction, dry without the need for personnel
In advance, sample size is accurate, reproducible, using, easy to maintenance, can be widely applied to environmental monitoring center, in prevention and control of diseases
The fields such as the heart, prevention and cure of occupational disease, petrochemical industry.
In the preferred embodiment of the invention, switching valve 2 includes six-way valve, ten-way valve or ten two-port valves.Using six-way valve,
State switching can be carried out when ten-way valve or ten two-port valves.In the present embodiment, switching valve 2 is ten-way valve.First choice valve 1 and
The valve port number of two selector valves 3 can be selected as needed.
In the preferred embodiment of the invention, gas producing device includes some gas production bags 4, the second selector valve 3 can with any one
Individual gas production bag 4 connects.When being detected, the second selector valve is connected with any one gas production bag, to detect in the gas production bag
Gaseous sample.Gas production bag 4 is aluminium foil or PVF materials, and in the present embodiment, gas production bag is elongated cylindrical, and volume is more than 100ml,
And valve 41 is designed with two ends, as shown in Figure 5.
In the preferred embodiment of the invention, the second carrier gas, detection air inlet 22 and quantitative loop 21 are two.Using two
Individual quantitative loop sampling sample introduction is detected, two results can be analyzed, to evaluate the accuracy of detection.
The present invention also provides the using method of above-mentioned gas automatic sampling device, comprises the following steps：
A. first choice valve 1 is made to be connected with vavuum pump and switching valve 2, switching valve 2 is connected with quantitative loop 21 and the second selector valve 3
Connect, the second selector valve 3 is connected with a gas production bag, start vavuum pump, the gaseous sample in gas production bag is in atmospheric pressure and vavuum pump
Quantitative loop 21 being flowed through under effect, gas flow rate being controlled by vavuum pump, the filling time of quantitative loop 21 can be according to gas flow rate, pipe
The factors such as road length determine；The gaseous sample in the gas production bag is made to enter in quantitative loop 21, as shown in Figure 1；
B. first choice valve 1 is disconnected with vavuum pump, and make first choice valve 1 and atmosphere；Make the second selector valve 3 with
Gas production bag disconnects, and makes the second selector valve 3 and atmosphere, so that quantitative loop 21 is communicated with air, makes quantitative loop 21 big
Atmospheric pressure state is issued to balance, as shown in Figure 2；
C. switching valve 2 is disconnected with first choice valve 1 and the second selector valve 3, make switching valve 2 and detection air inlet 22 and the
Two carrier gas connect, and being passed through the second carrier gas makes the gaseous sample in the second carrier gas conveying quantitative loop 21 enter inspection from detection air inlet 22
Survey device（Such as gas chromatograph）Detected, as shown in Figure 3；
D. switching valve 2 is connected with first choice valve 1 and the second selector valve 3, connect first choice valve 1 and the first carrier gas
Connect, the second selector valve 3 and atmosphere, being passed through the first carrier gas makes the first carrier gas enter switching valve 2 through first choice valve 1, then passes through
The second selector valve 3 is entered after quantitative loop 21, is entered in air afterwards to be rinsed pipeline；The second carrier gas is made to enter switching valve
After 2, air inlet 22 enters detector after testing（Such as gas chromatograph）To be rinsed to pipeline, as shown in Figure 4.Rinse
Cheng Hou, first choice valve 1 are switched to vavuum pump position, and the second selector valve 3 is switched to the next one and adopts air-cuff placement, carries out a new round
Sample detection.The gas automatic sampling device of the present invention using airbag or during syringe sampling, is being full-automatic sample introduction, nothing
Need personnel to intervene, sample size is accurate, reproducible, using, easy to maintenance, can be widely applied to environmental monitoring center, disease pre-
The fields such as anti-control centre, prevention and cure of occupational disease, petrochemical industry.
In the preferred embodiment of the invention, in stepb, the time that quantitative loop 21 is communicated with air is 1-3 minutes.Fixed
The amount time that communicates with air of ring 21 is 1-3 minutes, can be so that quantitative loop 21 is issued to balance in atmospheric pressure state, and quantitative loop
Interior sample is not by atmosphere pollution.
The gas automatic sampling device of the present invention achieves the standardization of gas sampling mode, while also possessing batch sample introduction
Function, provide a favourable instrument for vast gas-monitoring worker, analyze data is also more reliable and more stable, meaning weight
Greatly.
Several specific embodiments of only the application disclosed above, but the application is not limited to this, any this area
Technical staff can think change, should all fall in the protection domain of the application.
Claims (2)
1. a kind of using method of gas automatic sampling device, it is characterised in that for using a kind of gas automatic sampling device,
The device includes that first choice valve, switching valve and the second selector valve, the first choice valve can be carried with the switching valve, first
The connection of gas, air or vavuum pump, the switching valve can be with the second carrier gas, some detection air inlets, some quantitative loops or described the
Two selector valves connect, and second selector valve can be connected with air or gas producing device；Then the method is comprised the following steps：
A. the first choice valve is made to be connected with the vavuum pump and the switching valve, the switching valve and the quantitative loop and institute
The connection of the second selector valve is stated, second selector valve is connected with the gas producing device, starting the vavuum pump makes the gas production dress
Gaseous sample in putting is entered in the quantitative loop；
B. the first choice valve is disconnected with the vavuum pump, and make the first choice valve and atmosphere；Make described
Two selector valves are disconnected with the gas producing device, and second selector valve and atmosphere, the quantitative loop is communicated with air,
The quantitative loop is made to be issued to balance in atmospheric pressure state；
C. make the switching valve disconnect with the first choice valve and second selector valve, the switching valve is made with the detection
Air inlet and second carrier gas connection, being passed through the second carrier gas makes the second carrier gas convey the gaseous sample in the quantitative loop from institute
State detection air inlet entrance detector to be detected；
D. the switching valve is connected with the first choice valve and second selector valve, make the first choice valve with described
First carrier gas connection, second selector valve and atmosphere, being passed through the first carrier gas makes the first carrier gas through the first choice valve
The switching valve is entered, then second selector valve is entered after the quantitative loop, entered in air afterwards to carry out pipeline
Rinse；To enter the second carrier gas enter detector through the detection air inlet after the switching valve to be rinsed pipeline.
2. the using method of gas automatic sampling device as claimed in claim 1, it is characterised in that in step b, institute
It is 1-3 minutes to state the time that quantitative loop communicated with air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410086569.4A CN104914198B (en) | 2014-03-11 | 2014-03-11 | Gas automatic sampling device and its using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410086569.4A CN104914198B (en) | 2014-03-11 | 2014-03-11 | Gas automatic sampling device and its using method |
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| Publication Number | Publication Date |
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| CN104914198A CN104914198A (en) | 2015-09-16 |
| CN104914198B true CN104914198B (en) | 2017-03-15 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102051696B1 (en) * | 2015-10-06 | 2019-12-05 | 주식회사 엘지화학 | A device for injection of gas sample for gas-chromatograph and a method thereof |
| CN106896179B (en) * | 2015-12-21 | 2019-01-22 | 中昊晨光化工研究院有限公司 | A kind of the online environment monitoring system and on-line monitoring method of fluorine chemical industry |
| CN105675776A (en) * | 2016-04-07 | 2016-06-15 | 中科合成油技术有限公司 | Stable online chromatogram sample feeding device and method |
| CN105891391B (en) * | 2016-06-29 | 2019-02-12 | 天津博纳艾杰尔科技有限公司 | A kind of automatic sampling apparatus |
| CN106053667A (en) * | 2016-07-14 | 2016-10-26 | 湘潭大学 | Multi-position hydrocarbon online detection equipment and method |
| CN106990179A (en) * | 2017-03-30 | 2017-07-28 | 苏州天蓝分析仪器有限公司 | A kind of VOCs on-line detecting systems |
| CN110642923B (en) * | 2019-10-22 | 2022-09-30 | 大连民族大学 | Cyclic peptide with antibacterial activity and synthetic method thereof |
| GB2587579B (en) * | 2019-11-06 | 2022-07-13 | Ogrands Innovation Inc | Multi-channel gas sampling and detection device with interval gas supply |
| WO2021089024A1 (en) * | 2019-11-06 | 2021-05-14 | O'Grands Innovation Inc. | A method for continuous detection of multi-channel gas samples |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1295100B1 (en) * | 2000-06-09 | 2009-08-26 | Hansjörg Cueni | Valve arrangement |
| US20030224532A1 (en) * | 2002-06-03 | 2003-12-04 | Hte Ag | Apparatus and method for synthesis and transfer of sensitive compounds |
| WO2007141718A2 (en) * | 2006-06-09 | 2007-12-13 | Firmenich Sa | Method and apparatus for providing samples of volatiles to analysis using a multi-port valve and cryo-modulation |
| CN102236002B (en) * | 2010-04-28 | 2013-04-03 | 中国科学院大气物理研究所 | Measuring system and method of N2O concentration in air |
| CN202339348U (en) * | 2011-05-17 | 2012-07-18 | 杭州浩通仪器仪表有限公司 | Sample introduction device |
| CN103123339A (en) * | 2011-11-18 | 2013-05-29 | 上海华谊丙烯酸有限公司 | On-line analysis system and on-line measurement method |
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2014
- 2014-03-11 CN CN201410086569.4A patent/CN104914198B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
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| Automated Gas Sampling System for Laboratory Analysis of CH4 and N2O;Spencer L. Arnold et al;《COMMUN. SOIL SCI. PLANT ANAL.》;20011231;第32卷(第17-18期);2795-2807 * |
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