CN214894362U - Waste gas vacuum cylinder sampling system - Google Patents
Waste gas vacuum cylinder sampling system Download PDFInfo
- Publication number
- CN214894362U CN214894362U CN202120906998.7U CN202120906998U CN214894362U CN 214894362 U CN214894362 U CN 214894362U CN 202120906998 U CN202120906998 U CN 202120906998U CN 214894362 U CN214894362 U CN 214894362U
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- Prior art keywords
- sampling
- head
- vacuum bottle
- bottle
- quick connection
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- 238000005070 sampling Methods 0.000 title claims abstract description 81
- 239000002912 waste gas Substances 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims description 9
- 241001411320 Eriogonum inflatum Species 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000011491 glass wool Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 230000006378 damage Effects 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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Abstract
The application belongs to the environmental protection equipment field, concretely relates to waste gas vacuum bottle sampling system. The system comprises a sampling head, wherein the rear end of the sampling head is connected with a sampling tube, and the rear end of the sampling tube is connected with an air suction pump; the sampling tube is provided with a flow limiting valve, the flow limiting valve is connected with a quick connection female head, the quick connection female head is connected with a quick connection male head, and the quick connection male head is inserted on a bottle plug of the vacuum bottle; and the flow limiting valve is connected with a vacuum meter. The sampling system has the advantages of simple structure, strong practicability and the like.
Description
Technical Field
The application belongs to the environmental protection equipment field, concretely relates to waste gas vacuum bottle sampling system.
Background
In the environment inspection work, collecting exhaust gas is one of the most common routine works. The waste gas sample often contains solid particles which affect the detection of the sample. On the other hand, during collection of the gas sample, the gas sample often condenses inside the collection tube due to a decrease in temperature.
Generally, exhaust gas sampling is performed after a sampling gun is connected to an air bag.
The waste gas of collection is high temperature and high humidity gas mostly, and the temperature is at 50-60 ℃ probably, and the air pocket sample behind the collection sample, after taking back the laboratory, the temperature drops to room temperature state, so often can appear condensation state material in the air pocket, influences the accurate survey of target object, and the air pocket is gathered waste gas sample save time shorter in addition, and it is easy to appear the decay to place for a long time and leads to the testing result on the low side.
On the other hand, in order to avoid the occurrence of condensed substances in the airbag, the airbag is often heated, and the special material of the airbag releases more interfering substances after heating.
Based on the above situation, it is particularly necessary to design and invent a novel exhaust gas sample collection system.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a novel vacuum bottle sampling system for waste gas. This system utilizes the sampling bottle to replace the air pocket, sets up the restriction valve on the sampling tube and makes the sampling bottle be connected to the sampling tube on, carries out the sampling action. The vacuum bottle automatic sample injector has a heating function, and can restore the real sampling state of the waste gas to the maximum extent; because the inner wall of the vacuum bottle is silanized, the inerting effect is better, the target compound of the waste gas basically has no adsorbability, and the time for storing the waste gas sample by the sampling bottle is 7 days; the sampling bottle can also be cleaned repeatedly. Therefore, the gas sampling system has the advantages of simple structure, strong practicability and the like.
In order to achieve the above object, the utility model provides a following technical scheme:
a waste gas vacuum bottle sampling system comprises a sampling head, wherein the rear end of the sampling head is connected with a sampling tube, and the rear end of the sampling tube is connected with an air pump; the sampling tube is provided with a flow limiting valve, the flow limiting valve is connected with a quick connection female head, the quick connection female head is connected with a quick connection male head, and the quick connection male head is inserted on a bottle plug of the vacuum bottle; the flow limiting valve is connected with a vacuum meter;
because the sampling bottle is in a vacuum state before sampling, a flow limiting hole needs to be arranged between the sampling pipe and the connector of the sampling bottle so as to control the sampling flow rate and the sampling time, generally, the flow rate can be controlled to be about 50 mL/min, and the representativeness of a sample is ensured.
The vacuum bottle is characterized in that a heat insulation layer is arranged outside the vacuum bottle, and a label clamping groove is formed in the heat insulation layer;
the bottle stopper consists of a plurality of fan-shaped rubber blocks, and a quick connection male plug jack is formed in the middle of each fan-shaped rubber block; when the bottle stopper is to be taken down, the bottle stopper can be pulled out directly by pulling out the quick connection male head.
One side of the upper surface of the fan-shaped rubber block is provided with a cover gasket, and the cover gasket just covers the adjacent fan-shaped rubber block and can play a role in sealing to a certain extent.
The sampling head comprises a glass wool filter head, a Teflon connecting pipe and a sampling pipe heating device;
the part of the sampling tube connected with the air pump is provided with an activated carbon filter, and the sampling tube is provided with a valve.
During the use, stretch into the discharge tube with the sampling head in, open heating device, open aspiration pump and valve, be connected quick-connect female head and restriction valve to with quick-connect male head and quick-connect female head connection, waste gas enters into the vacuum flask at this moment, observes the vacuum table, and when the vacuum table shows that to reach 150 kPa, disconnection quick-connect female head and quick-connect male head take off the vacuum flask, accomplish the sampling.
This application utilizes the vacuum flask to replace original air pocket sampling, can prolong the save time of gaseous sample. The heat preservation design of the vacuum bottle ensures that the gas sample is not easily interfered by the outside and the gas is in a stable state. In addition, the filter head is designed on the sampling head, so that solid particles in waste gas are prevented from entering a sample, and damage is caused to an instrument during detection. Set up heating device at the sampling head and can avoid the waste gas condensation in the connecting pipe, cause the harm to the connecting pipe, on the other hand makes the sample inaccurate etc..
To sum up, the sampling system that this application provided simple structure, the practicality is strong.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the vacuum flask.
Fig. 3 is a schematic structural view of a stopper of a vacuum bottle.
Fig. 4 is a schematic structural view of the upper surface of the fan-shaped rubber block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, in an embodiment of the present invention, an exhaust gas vacuum bottle sampling system includes a sampling head, a sampling tube connected to a rear end of the sampling head, and an air pump connected to a rear end of the sampling tube; the sampling tube is provided with a flow limiting valve 6, the flow limiting valve 6 is connected with a quick connection female head 7, the quick connection female head 7 is connected with a quick connection male head 8, and the quick connection male head 8 is inserted on a bottle stopper 15 of a vacuum bottle 9; the flow limiting valve 6 is connected with a vacuum meter 5;
because the sampling bottle is in a vacuum state before sampling, a flow limiting hole needs to be arranged between the sampling pipe and the connector of the sampling bottle so as to control the sampling flow rate and the sampling time, generally, the flow rate can be controlled to be about 50 mL/min, and the representativeness of a sample is ensured.
An insulating layer 13 is arranged outside the vacuum bottle 9, and a label clamping groove 14 is arranged on the insulating layer 13;
the bottle stopper 15 consists of a plurality of fan-shaped rubber blocks 17, and a jack 16 for quickly connecting the male head 8 is formed in the middle of each fan-shaped rubber block 17; when the bottle stopper is to be taken down, the bottle stopper can be pulled out directly by pulling the quick connection male head 8.
One side of the upper surface of the fan-shaped rubber block 17 is provided with a cover gasket 18 which just covers the adjacent fan-shaped rubber block and can play a role in sealing to a certain extent.
The sampling head comprises a glass wool filter head 2, a Teflon connecting pipe 3 and a sampling pipe heating device 4;
the part of the sampling tube connected with the air pump is provided with an activated carbon filter 11, and the sampling tube is provided with a valve 10.
During the use, stretch into discharge tube 1 with the sampling head in, open heating device 4, open aspiration pump 12 and valve 10, be connected quick-connect female head and restriction valve to with quick-connect male head and quick-connect female head connection, waste gas enters into vacuum bottle 9 at this moment, observes vacuum table 5, and when the vacuum table shows that to reach 150 kPa, disconnection quick-connect female head and quick-connect male head take off the vacuum bottle, accomplish the sampling.
This application utilizes the vacuum flask to replace original air pocket sampling, can prolong the save time of gaseous sample. The heat preservation design of the vacuum bottle ensures that the gas sample is not easily interfered by the outside and the gas is in a stable state. In addition, the filter head is designed on the sampling head, so that solid particles in waste gas are prevented from entering a sample, and damage is caused to an instrument during detection. Set up heating device at the sampling head and can avoid the waste gas condensation in the connecting pipe, cause the harm to the connecting pipe, on the other hand makes the sample inaccurate etc..
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A waste gas vacuum bottle sampling system comprises a sampling head, wherein the rear end of the sampling head is connected with a sampling tube, and the rear end of the sampling tube is connected with an air pump; the sampling tube is characterized in that a flow limiting valve (6) is arranged on the sampling tube, the flow limiting valve (6) is connected with a quick connection female head (7), the quick connection female head (7) is connected with a quick connection male head (8), and the quick connection male head (8) is inserted on a bottle stopper (15) of a vacuum bottle (9); the flow limiting valve (6) is connected with a vacuum meter (5).
2. The exhaust vacuum bottle sampling system according to claim 1, wherein the vacuum bottle (9) is externally provided with an insulating layer (13), and the insulating layer (13) is provided with a label slot (14).
3. The exhaust vacuum bottle sampling system according to claim 1, characterized in that the stopper (15) is composed of several rubber sectors (17), and a quick-connect male (8) jack (16) is formed in the middle of each rubber sector (17).
4. An exhaust vacuum bottle sampling system according to claim 3, characterized in that one side of the upper surface of the rubber sector (17) is provided with a cap pad (18).
5. The exhaust vacuum bottle sampling system according to claim 1, wherein the sampling head comprises a glass wool filter head (2), a Teflon connecting tube (3) and a sampling tube heating device (4).
6. The exhaust vacuum bottle sampling system according to claim 1, wherein the portion of the sampling tube connected to the suction pump is provided with an activated carbon filter (11), and the sampling tube is provided with a valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120906998.7U CN214894362U (en) | 2021-04-29 | 2021-04-29 | Waste gas vacuum cylinder sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120906998.7U CN214894362U (en) | 2021-04-29 | 2021-04-29 | Waste gas vacuum cylinder sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214894362U true CN214894362U (en) | 2021-11-26 |
Family
ID=78947589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120906998.7U Expired - Fee Related CN214894362U (en) | 2021-04-29 | 2021-04-29 | Waste gas vacuum cylinder sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214894362U (en) |
-
2021
- 2021-04-29 CN CN202120906998.7U patent/CN214894362U/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: 20211126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |