CN217820203U - Automatic gas sampling and analyzing device - Google Patents
Automatic gas sampling and analyzing device Download PDFInfo
- Publication number
- CN217820203U CN217820203U CN202220662819.4U CN202220662819U CN217820203U CN 217820203 U CN217820203 U CN 217820203U CN 202220662819 U CN202220662819 U CN 202220662819U CN 217820203 U CN217820203 U CN 217820203U
- Authority
- CN
- China
- Prior art keywords
- gas
- way valve
- sampling
- hole site
- gas sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to an automatic gas sampling and analyzing device, which belongs to the technical field of gas analysis and comprises a gas sampling pipe network, wherein the gas sampling pipe network is connected with an external gas source to obtain and analyze a gas sample; the gas sampling pipe network is connected with a gas sampling pump through a flow path switching valve, the gas sampling pump is connected with a ten-way valve, a six-way valve is connected in series behind the ten-way valve, the ten-way valve is connected with a gas quantitative ring and a separation column through different hole sites, the six-way valve is connected with gas detection equipment, two paths of carrier gases are respectively connected with the corresponding hole sites of the ten-way valve and the six-way valve, and the valves of the ten-way valve and the six-way valve are controlled to be switched through a microcomputer processing system, so that gas samples can pass through different flow paths, and automatic quantitative sampling, interference component separation and gas concentration detection are realized. The utility model provides a device can accurate efficient take a sample gas laboratory analysis, effectively reduces the error that the human factor caused.
Description
Technical Field
The utility model belongs to the technical field of gas analysis, specifically be a gaseous automatic sampling analysis device.
Background
The gas chromatography is widely applied to gas component detection and analysis, and is a high-efficiency, sensitive and rapid separation and analysis technology. A common gas collection mode in chromatographic analysis is field gas bag sampling, detection is generally a manual sample introduction mode, manual operation brings certain human errors to gas detection and analysis, sampled gas samples are easily polluted, and the phenomena of poor repeatability of a gas chromatographic peak spectrogram and the like exist. The other is syringe sample injection, the syringe sample injection method is simple and flexible, but has the defects of poor sealing performance, back flushing and permeation, poor sample injection stability and the like, and air components in the environment can be mixed during analysis, so that the accuracy is influenced.
The technical problems of large workload, troublesome operation, poor repeatability and the like exist when the air bag and the syringe are used for sampling, transporting and measuring, and the operation personnel is required to have higher operation proficiency. Gas samples are different from liquid or solid samples and are more easily dissipated, and in gas component analysis, manual sample injection is one of the main sources of quantitative analysis errors. In addition, in the analysis process of manual sample introduction, different operators have differences in sample introduction speed and sample introduction gas pressure, even if the front sample introduction and the back sample introduction of the same operator are difficult to keep consistent, and the interference on precise chromatographic analysis is not small.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide an automatic gas sampling and analyzing device which can accurately and efficiently carry out laboratory analysis of sampled gas and effectively reduce errors caused by human factors; meanwhile, the method can be applied to real-time, efficient and rapid analysis of the tracer gas in the process of detecting the sealing performance of buildings and regional spaces such as a habitable building, an emergency rescue facility, a cultural relic protection isolation region and the like in a nuclear biochemical environment or detecting the internal leakage of the unfiltered gas.
In order to achieve the above purpose, the utility model adopts a technical scheme that:
an automatic gas sampling and analyzing device, which comprises a microcomputer processing system, a gas sampling pipe network, a flow path switching valve, a gas sampling pump, a ten-way valve, a gas quantifying ring, a separation column, a six-way valve and gas detection equipment, wherein:
the gas sampling pipe network is used for connecting an external gas storage device or an area to be measured to obtain an analysis gas sample; the gas sampling pipe network is connected with the flow path switching valve, the flow path switching valve is connected with the gas sampling pump, the gas sampling pump is connected with a first hole site of the ten-way valve, a gas sample of a corresponding pipeline is sent into the ten-way valve through the matching of the flow path switching valve and the gas sampling pump, and redundant gas samples are discharged from the ten hole sites of the ten-way valve;
the ten-way valve is provided with ten hole sites which are sequentially from a first hole site to a tenth hole site in a counterclockwise sequence, wherein a second hole site and a ninth hole site are respectively connected with two ends of the gas quantifying ring, and a third hole site and a sixth hole site are respectively connected with two ends of the separation column; the fifth hole site is connected with a first carrier gas pipeline, and carrier gas is sent to the ten-way valve through the fifth hole site; the fourth hole site and the eighth hole site are connected with each other, and the seventh hole site is connected with the first hole site of the six-way valve to form a series connection;
the six-way valve is provided with six hole sites which are a first hole site to a sixth hole site in turn in a counterclockwise sequence, wherein a second hole site is connected with the gas detection equipment; the third hole site is connected with a second carrier gas pipeline, and carrier gas is sent to the six-way valve through the third hole site; discharging the carrier gas in the first carrier gas pipeline through a sixth hole, and discharging the carrier gas in the second carrier gas pipeline through a fourth hole;
the ten-way valve and the six-way valve have two working states, the switching of the working states is realized by controlling the switching of the valves through the microcomputer processing system, each hole site can only be communicated with the adjacent hole site on one side and is not communicated with the adjacent hole site on the other side in each working state, and therefore, the purposes of automatic quantitative sampling, interference component separation and gas concentration detection are realized by enabling gas samples to pass through different flow paths.
Further, the automatic gas sampling and analyzing device as described above is configured to introduce different carrier gases according to the type of the analyzed gas.
Further, as described above, the automatic gas sampling and analyzing device is provided with the first carrier gas flow control component with signal control on the first carrier gas pipeline, and by dynamically setting different carrier gas flows, the separation rate of each component gas in the separation column and the purging cleanliness of the separation column of the sample gas are controlled.
Further, according to the automatic gas sampling and analyzing device, the second carrier gas flow control component with signal control is arranged on the second carrier gas pipeline, and the purging cleanness degree of the carrier gas on the gas detection equipment is controlled by dynamically setting different carrier gas flows.
Further, as mentioned above, in the automatic gas sampling and analyzing device, the gas quantitative ring is a gas temporary storage component with a certain volume capacity, and provides a certain volume of analysis gas for the gas detection equipment.
Further, in the automatic gas sampling and analyzing device, the separation column is filled with an adsorbent or the inner wall of the separation column is coated with an adsorbent liquid which is not easy to volatilize, and is used for separating each component gas in the sample gas; different packing materials and packing column lengths are selected according to the characteristics of the gas to be detected and other component gases possibly mixed.
Further, in the automatic gas sampling and analyzing device, the flow path switching valve may be an electrically controlled multi-way valve capable of selecting a flow path or a valve individually controlled for each flow path.
Further, in the automatic gas sampling and analyzing device, the gas sampling pipe network includes a plurality of gas sampling pipes, and each sampling pipe may be configured with one gas sampling pump and one individually controlled flow switching valve; or a plurality of sampling pipelines share one gas sampling pump and one flow path switching valve capable of selecting a flow path, and the flow path switching is carried out according to the time length of an analysis period, so that the sampling detection of different gas sources or different areas of tracer gas by a gas sampling pipeline network is realized.
Further, as above-mentioned gaseous automatic sampling analytical equipment, the gas sampling pipe network is the sampling pipe network that the multiunit has the manifold, can obtain the gas of different regional many positions through the pipe network.
Further, in the automatic gas sampling and analyzing device, the loop of the gas sampling pipe network is composed of a pipeline to which the analysis gas is not easily attached or a pipeline with an internal coating.
Adopt the utility model provides an automatic sampling and analyzing device of gas, beneficial effect lies in:
the utility model discloses to the sample gas or the tracer gas that contain the interference component, through computer processing system control ten logical valve and six logical valve for different operating condition, make the sample gas pass through different flow paths to can accurate efficient accomplish automatic gas sampling, interference component gas separation and detection and analysis, effectively reduce the error that the human factor caused; meanwhile, the method can be applied to real-time, efficient and rapid analysis of the tracer gas in the process of detecting the sealing performance of buildings and regional spaces such as a habitable building, an emergency rescue facility, a cultural relic protection isolation region and the like in a nuclear biochemical environment or detecting the internal leakage of the unfiltered gas.
Drawings
Fig. 1 is a flow chart of a cleaning and purging process of an automatic gas sampling and analyzing device provided by the present invention;
FIG. 2 is a flow chart of the process for separating interfering components of an automatic gas sampling and analyzing device provided by the present invention;
fig. 3 is a flow chart of the concentration detection process of an automatic gas sampling and analyzing device provided by the present invention;
in the figure: 1-a microcomputer processing system, 2-a gas sampling pipe network, 3-a flow path switching valve, 4-a gas sampling pump, 5-a ten-way valve, 6-a gas quantification ring, 7-a separation column, 8-a six-way valve, 9-a gas detection device, 10-a first carrier gas flow control component and 11-a second carrier gas flow control component.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-3, the present invention provides an automatic gas sampling and analyzing device, which mainly comprises a microcomputer processing system 1, a gas sampling pipe network 2, a flow path switching valve 3, a gas sampling pump 4, a ten-way valve 5, a gas quantitative ring 6, a separation column 7, a six-way valve 8, a gas detection device 9, a first carrier gas flow control component 10, a second carrier gas flow control component 11, etc., wherein: .
The gas sampling pipe network 2, the flow path switching valve 3 and the gas sampling pump 4 form a gas sampling part of the device, and the gas sampling pipe network 2 is used for connecting external gas storage equipment or an area to be measured to obtain an analysis gas sample; the gas sampling pipe network 2 is connected to a flow path switching valve 3, and the flow path switching valve 3 is connected to a gas sampling pump 4.
The gas sampling pipe network 2 is a group of gas sampling pipelines, and different pipelines can be connected with various gas sampling or storage devices during laboratory gas analysis; during field test, a plurality of groups of tracer gas sampling pipe networks with manifolds can be used, and tracer gas at representative positions of corresponding areas can be obtained through the pipe networks. The loop of the gas sampling pipe network 2 is composed of pipelines which are not easy to attach to analysis gas such as glass, stainless steel, polypropylene, polyethylene, nylon and the like or pipelines with internal coatings.
The flow path switching valve 3 is an electrically controlled multi-port valve capable of selecting a flow path, or an electrically controlled valve such as an electromagnetic valve or an electrically operated valve in which each flow path is individually controlled.
The gas sampling pump 4 can set a sampling flow rate and a sampling pressure. During field test, each sampling loop can be provided with a gas sampling pump and a flow path switching valve 3 which are controlled independently, and tracer gas in a certain area is conveyed to a gas inlet hole position 5 of a ten-way valve 5 by starting and stopping the gas sampling pump 4 and the flow path switching valve 3; or a plurality of groups of independent sampling pipe networks can share one gas sampling pump 4 and one flow path switching valve 3, the flow path switching valve 3 is a multi-way valve capable of selecting a flow path, and the gas sampling pump 4 and the flow path switching valve 3 are matched to convey tracer gas in a certain area to an air inlet 5 of a ten-way valve 5 according to a set requirement to perform concentration analysis. Through the program setting of the microcomputer processing system 1, the flow path switching can be carried out according to the time length of an analysis period, and the sampling detection of different gas sources or different areas of tracer gas by the gas sampling pipe network is realized.
The ten-way valve 5 is provided with ten hole sites which are sequentially from a first hole site to a tenth hole site in a counterclockwise sequence, wherein the gas sampling pump 4 is connected with the first hole site of the ten-way valve 5, a gas sample of a corresponding pipeline is sent into the ten-way valve 5, and redundant gas samples are discharged from the tenth hole site of the ten-way valve 5; the second hole site and the ninth hole site are respectively connected with two ends of the gas quantifying ring 6, and the third hole site and the sixth hole site are respectively connected with two ends of the separating column; the fifth hole site is connected with a first carrier gas pipeline, and carrier gas is sent to a ten-way valve 5 through the fifth hole site; the fourth hole site and the eighth hole site are connected with each other, and the seventh hole site and the first hole site of the six-way valve 8 are connected to form a series connection relation.
The gas quantitative ring 6 is a gas temporary storage component with determined volume capacity, provides analysis gas with determined volume for the gas detection device 9, can effectively reduce analysis errors caused by manual sample introduction volume deviation, and can select gas quantitative rings with different volumes and materials according to gas analysis conditions. When the gas quantitative ring 6 is inflated, the gas flow passes through the gas inlet hole site 5 and the gas quantitative ring 6 in sequence and then is discharged from the gas outlet hole site 6. The sample introduction time is properly prolonged, and the purpose of exhausting the last sample introduction airflow and sample introduction can be realized by flushing the gas brush quantitative ring 7 with the sample introduction airflow.
The separation column 7 is a slender glass or stainless steel tube filled with an adsorbent or coated with a non-volatile adsorption liquid on the inner wall thereof, and is used for separating each component gas in the sample gas. When the gas components pass through the separation column, the physical action of different gases and the adsorption substance or adsorption liquid gradually separates the component gases, and the component gases are lined up to flow out of the separation column after the first component gases pass through the separation column. Different filling materials and filling column lengths are selected according to the characteristics of the detected gas and other mixed gas components, for example, for a certain concentration of sulfur hexafluoride gas, a 5A molecular sieve filling column with a corresponding length can be adopted.
The six-way valve 8 is provided with six hole sites which are from the first hole site to the sixth hole site in turn in an anticlockwise sequence, wherein the second hole site is connected with the gas detection equipment 9; the third hole site is connected with a second carrier gas pipeline, and carrier gas is sent to the six-way valve 8 through the third hole site; the carrier gas in the first gas-carrying pipeline is discharged through a sixth hole, and the carrier gas in the second gas-carrying pipeline is discharged through a fourth hole.
The first carrier gas flow control component 10 and the second carrier gas flow control component 11 are respectively arranged on the first carrier gas pipeline and the second carrier gas pipeline, are mass flowmeters or other flow control components controlled by signals, and are respectively used for accessing carrier gas with set volume flow. Different carrier gases are connected according to the category of the analysis gas, for example, for sulfur hexafluoride analysis gas, high-purity nitrogen is usually adopted as the carrier gas. By dynamically setting different carrier gas flow rates, the separation rate of each component gas in the separation column of the sample gas and the cleanliness of the purging process are controlled.
The ten-way valve 5 and the six-way valve 8 both have two working states, the switching of the working states is realized by controlling the switching of the valves through the microcomputer processing system 1, each hole site can only be communicated with the adjacent hole site on one side and is not communicated with the adjacent hole site on the other side in each working state, so that a gas sample passes through different flow paths, and the purposes of automatic quantitative sampling, interference component separation and gas concentration detection are realized.
The microcomputer processing system 1 controls the flow path switching valve 3, the first carrier gas flow control component 10, the second carrier gas flow control component 11, the ten-way valve 5, the six-way valve 8, the gas detection equipment 9 and the like to execute corresponding actions according to set requirements through signals, and the equipment is matched with each other, so that various experimental purposes are realized.
The design idea of the device is also applicable to the automatic sampling analysis device of the liquid sample, and only part of components need to be changed into corresponding components applicable to the liquid, for example, carrier gas and carrier gas flow control components are changed into carrier liquid and carrier liquid flow control components, a gas separation column is changed into a liquid component separation column, a gas sampling pump is changed into a liquid sampling pump, and a gas detection device is changed into a liquid phase detection device.
Use the utility model provides a gaseous automatic sampling analysis device carries out gaseous sampling analysis's workflow does:
s1, starting all experimental components, setting a ten-way valve 5 and a six-way valve 8 in the working state shown in the figure 1 through a microcomputer processing system 1, carrying out gas sampling on different gas sources or different sampling positions through a gas sampling pipe network 2, and flushing a gas quantitative ring 6, purging a separation column 7 and purging a gas detection device 9.
In the working state shown in fig. 1, the gas sampling pump 4 continuously works, the test gas enters the gas quantifying ring 6 through the first hole site of the ten-way valve, the redundant gas is discharged from the tenth hole site of the ten-way valve, and the concentration of the gas in the gas quantifying ring 6 is ensured to be consistent with the concentration at the taken position by flushing the gas quantifying ring 6 for many times. The first carrier gas enters the ten-way valve 5 at a set large flow through the first carrier gas flow control component 10, gas residues possibly remaining on the separation column 7 and influencing the analysis of the gas sample are continuously purged, and the first carrier gas enters the six-way valve 8 after passing through a flow path of the ten-way valve 5 and then is discharged through a hole six position of the six-way valve. The second carrier gas flows through the second carrier gas flow control member 11 and enters the gas detection device 9 through the flow path in the six-way valve 8 at a set flow rate, and components that may remain in the gas detection device 9 and affect the gas analysis.
During the purge phase, the carrier gas should purge the sample gas components remaining in the loop at a relatively large flow rate.
S2, after the gas quantitative ring is charged and washed, the separation column 7 is purged and the gas detection device 9 is purged, the ten-way valve and the six-way valve are switched to the working states shown in the figure 2 through the microcomputer processing system 1, and different components in the sample gas are separated in the separation column 7.
In the working state shown in fig. 2, the sample gas flow from the gas sampling pipe network 2 passes through the hole site one of the ten-way valves and is directly discharged from the hole site ten. The first path of carrier gas enters a fifth hole site of the ten-way valve 5 after the carrier gas flow is reset through the first carrier gas flow control component 10, the sample gas with the determined volume in the carrier gas quantitative ring 6 enters the separation column 8, different components in the sample gas are separated in the separation column 7, and the interference component which flows out firstly flows out of the ten-way valve 5 and then flows out of a sixth hole site of the six-way valve 8. In this process, the second path of carrier gas continuously purges the cleaning gas detection device 9 through the six-way valve 8.
And S3, when the target gas is detected in the separation column 7 (the outflow time period is from t1 to t 2), namely at the time t1, switching the ten-way valve and the six-way valve to the working states shown in the figure 3 through the microcomputer processing system 1, and detecting the concentration of the target gas.
In the working state shown in fig. 3, the target gas flows out of the ten-way valve 5 under the first carrier gas carrier, and then enters the gas detection device 9 according to the flow path of the six-way valve 8 to perform concentration analysis. In the process, the second path of carrier gas is directly exhausted through the sixth hole site of the six-way valve, and the sample gas flow coming from the gas sampling pipe network 2 is directly exhausted from the tenth hole site after passing through the first hole site of the ten-way valve.
When the gas carrying the sample is separated by the separation column and enters the gas detection equipment, the carrier gas is carried out at a flow rate matched with the separation and detection.
And S4, when the target gas detected in the separation column 7 completely flows out, namely at the time t2, switching the ten-way valve and the six-way valve to the working states shown in the figure 1 again through the microcomputer processing system, and switching the flow path through the flow path switching valve 3 to perform sampling analysis on the next sample.
The flow path switching valve 3 automatically switches the flow path through the program control of the microcomputer processing system 1 by taking the testing time of a single gas sample as a period, new sample gas flow enters the gas quantitative ring 6 through the first hole of the ten-way valve, redundant gas is discharged from the tenth hole, and the analysis flow of the next sample is started.
In a control process of quantitative sampling of a gas sample, separation of interfering components and detection of gas concentration, the first carrier gas flow control component 10 and the second carrier gas flow control component 11 dynamically set different carrier gas flow rates as required to realize accurate and efficient analysis.
The utility model provides a gas automatic sampling analysis device, to the sample gas or tracer gas that contain the interference component, through computer processing system control ten logical valve and six logical valve for different operating condition, make the sample gas pass through different flow paths to can accurate efficient accomplish automatic gas sampling, interference component gas separation and detection and analysis, effectively reduce the error that the human factor caused; meanwhile, the method can be applied to real-time, efficient and rapid analysis of the tracer gas in the process of detecting the sealing performance of buildings and regional spaces such as a habitable building, an emergency rescue facility, a cultural relic protection isolation region and the like in a nuclear biochemical environment or detecting the internal leakage of the unfiltered gas.
The above embodiments are merely illustrative of the present invention, and not all embodiments. The present invention may be embodied in other specific forms or forms without departing from its spirit or essential characteristics. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be determined by the appended claims, and any changes that are equivalent to the intent and scope of the claims are intended to be included within the scope of the invention.
Claims (10)
1. An automatic gas sampling and analyzing device, which is characterized by comprising a microcomputer processing system (1), a gas sampling pipe network (2), a flow path switching valve (3), a gas sampling pump (4), a ten-way valve (5), a gas quantifying ring (6), a separation column (7), a six-way valve (8) and a gas detection device (9), wherein:
the gas sampling pipe network (2) is used for connecting external gas storage equipment or an area to be measured to obtain an analysis gas sample; the gas sampling pipe network (2) is connected with the flow path switching valve (3), the flow path switching valve (3) is connected with the gas sampling pump (4), the gas sampling pump (4) is connected with a first hole site of the ten-way valve (5), a gas sample of a corresponding pipeline is sent into the ten-way valve (5) through the matching of the flow path switching valve (3) and the gas sampling pump (4), and redundant gas samples are discharged from the ten-way hole site of the ten-way valve (5);
the ten-way valve (5) is provided with ten hole sites from a first hole site to a tenth hole site in sequence in a counterclockwise order, wherein a second hole site and a ninth hole site are respectively connected with two ends of the gas quantifying ring (6), and a third hole site and a sixth hole site are respectively connected with two ends of the separation column; the fifth hole is connected with a first carrier gas pipeline, and carrier gas is sent to the ten-way valve (5) through the fifth hole; the fourth hole site and the eighth hole site are connected with each other, and the seventh hole site is connected with the first hole site of the six-way valve (8) to form a series connection;
the six-way valve (8) is provided with six hole sites which are a first hole site to a sixth hole site in turn in a counterclockwise sequence, wherein a second hole site is connected with the gas detection equipment (9); the third hole site is connected with a second carrier gas pipeline, and carrier gas is sent to the six-way valve (8) through the third hole site; discharging the carrier gas in the first carrier gas pipeline through a sixth hole, and discharging the carrier gas in the second carrier gas pipeline through a fourth hole;
the ten-way valve (5) and the six-way valve (8) have two working states, the microcomputer processing system (1) controls the valve to switch to realize the switching of the working states, each hole site can only be communicated with the adjacent hole site on one side but not communicated with the adjacent hole site on the other side in each working state, and therefore the purposes of automatic quantitative sampling, interference component separation and gas concentration detection are achieved by enabling a gas sample to pass through different flow paths.
2. The automatic gas sampling and analyzing device of claim 1, wherein different carrier gases are introduced according to the type of the analyzed gas.
3. The automatic gas sampling and analyzing device according to claim 2, wherein a first carrier gas flow control component (10) with signal control is arranged on the first carrier gas pipeline, and the separation rate of each component gas in the separation column (7) of the sample gas and the purging cleanliness of the separation column (7) are controlled by dynamically setting different carrier gas flow rates.
4. The automatic gas sampling and analyzing device according to claim 2, wherein a second carrier gas flow control component (11) with signal control is arranged on the second carrier gas pipeline, and the purging cleanness of the carrier gas for the gas detection equipment (9) is controlled by dynamically setting different carrier gas flow rates.
5. An automatic gas sampling and analysis device according to any of claims 1 to 4, characterized in that the gas dosing ring (6) is a volumetric capacity gas buffer providing a defined volume of analysis gas to the gas detection means (9).
6. The automatic gas sampling and analyzing device according to claim 1, wherein the separation column (7) is filled with an adsorbent or coated with a non-volatile adsorption liquid on its inner wall for separating each component gas from the sample gas; different packing materials and packing column lengths are selected according to the characteristics of the gas to be detected and other component gases possibly mixed.
7. The automatic gas sampling and analyzing device according to claim 1, wherein the flow path switching valve (3) is an electrically controlled multi-way valve capable of selecting flow paths or a valve individually controlled for each flow path.
8. The automatic gas sampling and analyzing device according to claim 7, wherein the gas sampling network (2) comprises a plurality of gas sampling lines, each of which is provided with a gas sampling pump and a separately controlled flow switching valve (3); or a plurality of sampling pipelines share one gas sampling pump (4) and one flow path switching valve (3) capable of selecting a flow path, and the flow path switching is carried out according to the time length of an analysis period, so that the sampling detection of different gas sources or different areas of tracer gas by the gas sampling pipeline network (2) is realized.
9. The automatic gas sampling and analyzing device according to claim 8, wherein the gas sampling pipe network (2) is a plurality of groups of sampling pipe networks with manifolds, and gas at a plurality of positions in different areas can be obtained through the pipe networks.
10. The automatic gas sampling and analysis device according to any one of claims 6 to 9, wherein the circuit of the gas sampling network (2) consists of a pipe to which the analysis gas is not easily attached or a pipe with an internal coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220662819.4U CN217820203U (en) | 2022-03-25 | 2022-03-25 | Automatic gas sampling and analyzing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220662819.4U CN217820203U (en) | 2022-03-25 | 2022-03-25 | Automatic gas sampling and analyzing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217820203U true CN217820203U (en) | 2022-11-15 |
Family
ID=83979546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220662819.4U Active CN217820203U (en) | 2022-03-25 | 2022-03-25 | Automatic gas sampling and analyzing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217820203U (en) |
-
2022
- 2022-03-25 CN CN202220662819.4U patent/CN217820203U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105092875A (en) | Full-automatic gas-liquid multi-purpose sample injector | |
| CN111505173B (en) | Method for determining liquid flow, fraction collector and liquid chromatography system | |
| CN107941930B (en) | Quick gaseous multicomponent chromatographic fractionation device of VOCs | |
| CN112240918A (en) | Detection system for non-methane total hydrocarbon and benzene series | |
| US3827302A (en) | Apparatus for selectively sampling fluids | |
| CN107643352A (en) | NMHC detection means and method | |
| CN112255355A (en) | Non-methane total hydrocarbon analysis method | |
| CN217820203U (en) | Automatic gas sampling and analyzing device | |
| CN213903428U (en) | Non-methane total hydrocarbon analysis device | |
| CN109696495A (en) | A kind of VOC monitoring device and method that accurate quantification sampling may be implemented | |
| CN111157303B (en) | Sampling and analyzing device and method for nitrogen, oxygen and carbon dioxide isotopes in atmosphere | |
| CN108318608A (en) | A kind of method of sample automatic dilution | |
| CN209280647U (en) | A kind of continuous quadratic that multistage parallel takes turns to operate enrichment resolver | |
| CN215985902U (en) | Multi-component chromatographic separation detection system | |
| CN207096187U (en) | Chromatographic system | |
| CN208505985U (en) | A kind of gas detecting system | |
| CN214011151U (en) | Gas circuit system and non-methane total hydrocarbon on-line monitoring chromatograph | |
| CN216208854U (en) | Non-methane total hydrocarbon on-line measuring device | |
| CN109406692A (en) | Continuous quadratic enrichment resolver that is a kind of multistage and running in turn | |
| CN213986335U (en) | Detection system for non-methane total hydrocarbon and benzene series | |
| WO2019041270A1 (en) | Sample testing device, sample analyzer, and sample testing method | |
| US20040115829A1 (en) | Method for use in testing of liquid samples, a test unit utilizing the method and a system comprising such test units | |
| CN208366854U (en) | A kind of water quality toxicity detector and its pipeline | |
| CN108519254B (en) | Sampling flow control device and gas analyzer | |
| CN206479499U (en) | A kind of sample introduction separator of ping-pong structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |