CN209745895U - Gas sampling and sample introduction bag - Google Patents
Gas sampling and sample introduction bag Download PDFInfo
- Publication number
- CN209745895U CN209745895U CN201920222077.1U CN201920222077U CN209745895U CN 209745895 U CN209745895 U CN 209745895U CN 201920222077 U CN201920222077 U CN 201920222077U CN 209745895 U CN209745895 U CN 209745895U
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- China
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- valve
- bag
- sample
- gas
- flexible air
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Abstract
The utility model provides a gas sampling advances appearance bag which characterized in that: the flexible air bag type flow meter comprises a first movable joint, a first valve, a sample bag, a flexible air bag, a second valve, a flow meter, a third valve and a second movable joint; the first movable joint is arranged at the position of an input port of the sample bag, the sample bag is connected into the sampling device through the first movable joint, the first valve is arranged on the input pipe of the sample bag and is positioned between the first movable joint and the main body of the sample bag, the main body of the flexible air bag is positioned in the main body of the sample bag, the input pipe of the flexible air bag, which is connected with the main body of the flexible air bag, penetrates through an opening of the main body of the sample bag, the joint of the main body of the sample bag and the input pipe of the flexible air bag is sealed by sealant, the input pipe of the flexible air bag is connected with the compression air pump through the second valve, a flow meter is arranged between the second valve and the compression air pump, the output port of the sample bag is connected with the second movable joint, and the third.
Description
Technical Field
The utility model relates to a gas sampling advances kind bag for connect gas chromatography to carry out gas composition analysis, belong to the analysis and test field.
Background
Currently, in experiments in which gas components are analyzed, gas is sampled using a conventional gas sampling bag and then gas component analysis is performed using gas chromatography. In the process, after the gas sampling bag is used for sampling, the gas sampling bag is firstly required to be connected with a sample inlet of the gas chromatograph, then sample is introduced in a mode of manual extrusion or mechanical weight compression and the like, and gas is input into the gas chromatograph. The manual pressing method easily causes uneven gas pressure in the sample introduction process, thereby affecting the uniformity of the sample introduction amount and causing poor measurement precision. And adopt mechanical heavy object oppression mode, if want to obtain the relatively stable appearance flow of advancing, need the mechanical control device of high accuracy to need with the cooperation of export flowmeter, lead to gas analysis's gas to advance the appearance operation relatively complicated, the appearance device cost of manufacture is high moreover.
In addition, the sampling and the sample introduction of the gas are finished in an integrated system, so that the gas is prevented from moving, and the complexity and the cost of the experiment are reduced.
Therefore, a gas sampling and sample feeding integrated finishing device with uniform sample feeding amount, simple sample feeding operation and low cost needs to be designed to realize rapid and high-precision gas detection.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gas sampling advances kind bag, need not with the help of complicated mechanical device when this sample advances kind bag advances kind, only need connect compressed gas, advances kind sample moreover and accomplishes in same system, need not to remove the gas that awaits measuring, can obtain stable even appearance flow of advancing, and easy operation has both guaranteed measurement accuracy, has practiced thrift the cost again.
In order to achieve the above effects, the utility model adopts the following technical scheme: the utility model provides a gas sampling advances appearance bag which characterized in that: the flexible air bag type flow meter comprises a first movable joint, a first valve, a sample bag, a flexible air bag, a second valve, a flow meter, a third valve and a second movable joint; the first movable joint is arranged at the inlet of the sample bag, the sample bag is connected into the sampling device through the first movable joint, the first valve is arranged on the input pipe of the sample bag and is positioned between the first movable joint and the main body of the sample bag, the main body of the flexible air bag is positioned in the main body of the sample bag, the input pipe of the flexible air bag connected with the main body of the flexible air bag penetrates through the opening of the main body of the sample bag, the joint of the main body of the sample bag and the input pipe of the flexible air bag is sealed by sealant, the input pipe of the flexible air bag is connected with the compression air pump through the second valve, a flow meter is arranged between the second valve and the compression air pump, the output port of the sample bag is connected with the second movable joint, and the third valve is arranged on the output pipe of; during sampling, the first valve is opened, the second valve is closed, the third valve is opened, and after the gas to be detected completely replaces the gas in the sample bag, the first valve is closed and the third valve is closed; when the sample is fed, the first valve is closed, the second valve is opened, the third valve is opened, the compressed air pump pumps the gas into the flexible air bag, and the flexible air bag expands to push the gas to be detected in the sample bag to enter the gas chromatograph.
Furthermore, the material of the sample bag main body is an aluminum-plastic composite material.
Further, the flexible airbag main body is made of soft materials.
Further, the material of the flexible airbag main body is polyethylene.
Further, the flow meter has an accumulated flow alarm and cut-off function.
Further, both the sample bag and the flexible bladder are antistatic.
Furthermore, the flexible air bag is connected with compressed gas with stable flow during sample introduction, and the flexible air bag expands to push the sample gas to flow out of the sample bag at a stable flow rate under normal pressure.
The utility model discloses technical scheme's beneficial effect: the sample gas to be detected is pushed to flow out of the sample bag at a stable flow rate under normal pressure by using a novel mode of expanding a flexible air bag arranged in the sample bag, so that the stable sample gas flow under the normal pressure is obtained at a very low cost; in the sampling and sample introduction processes, the sample bag does not move and is completed in the same system, the device and the method have the advantages of uniform sample introduction amount, simple sample introduction operation, low cost and integrated completion of gas sampling and sample introduction, and are very suitable for gas chromatographic gas component analysis.
Drawings
FIG. 1 is a schematic diagram of a gas sampling sample bag. The direction of the arrows in the figure is the direction of the gas flow during the gas sampling and sample introduction. 1. A movable joint; 2. a valve; 3. a sample bag; 4. a flexible bladder; 5. a valve; 6. the compressed gas is connected with a flowmeter; 7. a valve; 8. a movable joint; 9. a sample bag input port; 10. a sample bag input tube; 11. a flexible balloon input tube; 12. a sample bag outlet; 13. and (5) outputting a sample bag. The arrows in the figure indicate the direction of the air flow.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments to explain the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the gas sampling and sampling bag comprises a first movable joint 1, a first valve 2, a sample bag 3, a flexible air bag 4, a second valve 5, a flow meter 6, a third valve 7 and a second movable joint 8; the first movable joint 1 is arranged at an input port 9 of the sample bag, the sample bag 3 is connected into the sampling device through the first movable joint 1, the first valve 2 is arranged on a sample bag input pipe 10 and is positioned between the first movable joint 1 and the main body of the sample bag 3, the main body of the flexible air bag 4 is positioned in the main body of the sample bag 3, a flexible air bag input pipe 11 connected with the main body of the flexible air bag 4 penetrates through an opening of the main body of the sample bag 3, the joint of the main body of the sample bag 3 and the flexible air bag input pipe 11 is sealed by sealant, the flexible air bag input pipe 11 is connected with a compression air pump (not shown in the figure) through the second valve 5, a flow meter 6 is arranged between the second valve 5 and the compression air pump, an output port 12 of the sample bag is connected with the second movable joint 8, and the third valve 7 is arranged on an output pipe 13 of the sample; during sampling, the first valve 2 is opened, the second valve 5 is closed, the third valve 7 is opened, and after the gas to be detected completely replaces the gas in the sample bag, the first valve 2 is closed, and the third valve 7 is closed; during sample introduction, the first valve 2 is closed, the second valve 5 is opened, the third valve 7 is opened, and the compressed air pump pumps air into the flexible air bag 4.
During the sample, insert sampling device with sample bag through union 1, after the gas that awaits measuring replaces the interior gas of sample bag 3 completely, sample bag 3 breaks off from sampling device, and the sample is ended.
During sample introduction, the compressed gas controlled by the flow meter 6 starts to flow into the flexible air bag 4 at a stable flow rate, the flexible air bag 4 expands, and the flexible air bag 4 expands to push the gas to be detected in the sample bag 3 to enter the gas chromatograph at the stable flow rate.
The material of the main body of the sample bag 3 can be an aluminum-plastic composite material, and the flexible air bag 4 is made of a soft material; such as polyethylene.
The flowmeter 6 has the functions of accumulated flow alarming and stopping, gas is prevented from continuously flowing into and breaking the flexible air bag 4, and the sample bag 3 and the flexible air bag 4 can prevent static electricity.
The stability of the airflow to be measured is realized, the flexible air bag 4 is connected with the compressed gas with stable flow during sample introduction, and the flexible air bag 4 expands to push the sample gas to flow out of the sample bag 3 at a stable flow rate under normal pressure. Meanwhile, the pumping speed and the pumping flow of the compressed gas can be controlled according to the flow demand of the gas to be detected, so that the airflow is uniform and controllable.
The present invention has been described in detail with reference to the specific and preferred embodiments, but it should be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (6)
1. The utility model provides a gas sampling advances appearance bag which characterized in that: comprises a first movable joint (1), a first valve (2), a sample bag (3), a flexible air bag (4), a second valve (5), a flowmeter (6), a third valve (7) and a second movable joint (8); the sampling device comprises a first movable joint (1), a sample bag (3), a first valve (2), a sampling device, a flexible air bag input pipe (10), a sample bag output pipe (8), a third valve (7), a second valve (6), a third valve (3), a fourth valve (10), a fourth valve (3), a fifth valve (10), a sixth valve (3), a sixth valve (6), a sixth valve (7), a sixth valve (6), a sixth valve (12), a sixth valve (8), a sixth valve (7), a sixth valve (3) and a sixth valve (10); during sampling, the first valve (2) is opened, the second valve (5) is closed, the third valve (7) is opened, and after the gas to be detected completely replaces the gas in the sample bag, the first valve (2) is closed and the third valve (7) is closed; when the sample is introduced, the first valve (2) is closed, the second valve (5) is opened, the third valve (7) is opened, the compressed air pump pumps air into the flexible air bag (4), and the flexible air bag (4) expands to push the gas to be detected in the sample bag (3) to enter the gas chromatograph.
2. A gas sampling and sample introduction bag according to claim 1, wherein the material of the main body of the sample bag (3) is an aluminum-plastic composite material.
3. A gas sampling and sample introduction bag according to claim 1, wherein the flexible bladder (4) is made of a soft material.
4. A gas sampling bag according to claim 1 wherein the flexible bladder (4) is polyethylene.
5. A gas sampling bag according to claim 1, wherein the flow meter (6) has an accumulated flow alarm and cut-off function.
6. A gas sampling sample bag according to claim 1, wherein both the sample bag (3) and the flexible bladder (4) are antistatic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920222077.1U CN209745895U (en) | 2019-02-22 | 2019-02-22 | Gas sampling and sample introduction bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920222077.1U CN209745895U (en) | 2019-02-22 | 2019-02-22 | Gas sampling and sample introduction bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209745895U true CN209745895U (en) | 2019-12-06 |
Family
ID=68707632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920222077.1U Expired - Fee Related CN209745895U (en) | 2019-02-22 | 2019-02-22 | Gas sampling and sample introduction bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209745895U (en) |
-
2019
- 2019-02-22 CN CN201920222077.1U patent/CN209745895U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |