CN221056164U - Antistatic gas sampling bag - Google Patents
Antistatic gas sampling bag Download PDFInfo
- Publication number
- CN221056164U CN221056164U CN202322316011.8U CN202322316011U CN221056164U CN 221056164 U CN221056164 U CN 221056164U CN 202322316011 U CN202322316011 U CN 202322316011U CN 221056164 U CN221056164 U CN 221056164U
- Authority
- CN
- China
- Prior art keywords
- gas
- valve seat
- lower valve
- bag
- bag body
- 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.)
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- 238000005070 sampling Methods 0.000 title claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 5
- 229920006284 nylon film Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920006264 polyurethane film Polymers 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides an antistatic gas sampling bag, which relates to the technical field of gas collection devices and comprises a bag body, wherein a metal gas valve is detachably connected to a gas inlet of the bag body. The metal air valve comprises a lower valve seat, a fastening thread sleeve and an upper thread cap. The lower valve seat is internally provided with a gas channel, the fastening thread sleeve is tightly matched with the external thread of the lower valve seat to be sleeved on the lower valve seat, and the upper thread cap is in threaded connection with the top end of the lower valve seat through the internal thread arranged on the inner wall of the upper thread cap. The center of the top end of the upper thread cap is provided with a sampling hole for the insertion of a sampling needle, and a rubber sealing gasket is arranged in the upper thread cap. A rubber gasket is embedded in the gas channel. According to the utility model, the metal air valve is detachably connected to the bag body, so that the bag body can be easily combined with the external air inlet pipe, the air collecting operation time is short, and the air collecting operation is quicker. Meanwhile, the screw sleeve, the upper screw cap and the lower valve seat are tightly matched, so that the overall sealing performance is ensured, the sealing effect is improved, and the long-time transportation is facilitated.
Description
Technical Field
The utility model relates to the technical field of gas collection devices, in particular to an antistatic gas sampling bag.
Background
In the chemical industries such as oil refining, methanol and the like, gas samples are often required to be taken, so that relevant detection and analysis are carried out on the gas, and a gas collecting bag is often used when the gas is taken.
At present, a common gas sampling mode still depends on a common gas sampling bag matched with an air sampler to sample, and the mode can collect relevant gas, but still has the following defects: (1) The air sampler is inconvenient to carry and complex to operate, and a large number of samples cannot be collected in a short time by a single person; (2) The sample collection time is long, the control is not easy, and the optimal sampling period is easy to miss when a short-time high-concentration sample is collected; (3) The sampled air collecting bag is positive in pressure, and is easy to leak air after long-time transportation or storage.
Disclosure of utility model
The utility model provides an antistatic gas sampling bag aiming at the defects of the prior art.
The utility model solves the technical problems by the following technical means: an antistatic gas sampling bag comprises a bag body, wherein a metal gas valve is detachably connected to a gas inlet of the bag body; the metal air valve comprises a lower valve seat with an external thread column, a fastening thread sleeve and an upper thread cap; a gas channel is arranged in the lower valve seat; the gas channel is communicated with the bag body; the fastening thread sleeve is tightly matched with the external thread of the lower valve seat and sleeved on the lower valve seat so as to clamp and seal the edge of the air inlet of the bag body; the upper threaded cap is in threaded connection with the top end of the lower valve seat through an internal thread arranged on the inner wall of the upper threaded cap; a sampling hole for inserting a sampling needle is formed in the center of the top end of the upper threaded cap, and a rubber sealing gasket is arranged in the upper threaded cap; the rubber gasket is embedded in the gas passage.
Further, at least one O-shaped sealing ring is sleeved between the lower valve seat and the fastening thread sleeve.
Further, the bag body comprises two bag sheets, and the edges of the two bag sheets are bonded and fixed through an adhesive, so that a gas cavity is formed by surrounding the two bag sheets.
Further, each bag sheet sequentially comprises a polyethylene film layer, an aluminum foil layer, a nylon film layer and a polyurethane film layer from inside to outside.
Compared with the prior art, the utility model has the advantages that: the antistatic gas sampling bag provided by the utility model has a simple structure, and the bag body can be easily combined with an external gas inlet pipe by detachably connecting the metal gas valve on the bag body, so that the gas sampling operation time is short and quicker. Meanwhile, the screw sleeve, the upper screw cap and the lower valve seat are tightly matched, so that the overall sealing performance is ensured, the sealing effect is improved, and the long-time transportation is facilitated.
Drawings
FIG. 1 is a schematic view of the overall structure of an antistatic gas sampling bag according to the present utility model;
FIG. 2 is a schematic diagram of the overall structure of the metal gas valve according to the present utility model;
Fig. 3 is a schematic view of the layered structure of the pouch sheet of the present utility model.
Wherein,
1-Bag body, 2-metal air valve,
11-Polyethylene film layer, 12-aluminum foil layer, 13-nylon film layer, 14-polyurethane film layer,
21-Lower valve seat, 22-O-shaped sealing ring, 23-fastening thread sleeve, 24-upper thread cap, 25-rubber sealing gasket, 26-external thread column, 27-gas channel and 28-sampling hole.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, an overall structure of an antistatic gas sampling bag according to this embodiment includes a bag body 1, and in implementation, the bag body 1 includes two bag sheets, and edges of the two bag sheets are bonded and fixed by an adhesive, so that a gas cavity is formed between the two bag sheets. As shown in fig. 3, a schematic view of the layered structure of the pouch sheet of the present utility model is shown. Each bag sheet sequentially comprises a polyethylene film layer 11, an aluminum foil layer 12, a nylon film layer 13 and a polyurethane film layer 14 from inside to outside.
In this structure, the polyurethane film 14 has excellent elasticity and excellent moisture permeability in addition to high waterproof performance, and is suitable for the outer layer. The nylon film layer 13 has higher tensile strength and tensile strength, better heat resistance and wear resistance, is softer, is suitable for being used as an outer layer, and the aluminum foil layer 12 has the advantages of moisture resistance, airtight property, shading property, abrasion resistance, low permeability and the like, is suitable for being used as an intermediate layer, and the polyethylene film layer 11 has better chemical corrosion resistance and is suitable for being used as an inner layer.
The air inlet of the bag body 1 is detachably connected with a metal air valve 2. Please refer to fig. 2, which is a schematic diagram illustrating an overall structure of the metal gas valve according to the present utility model. The metal air valve 2 has better antistatic effect, thus being more suitable for gas production in chemical industries such as oil refining, methanol and the like. The metal gas valve 2 comprises a lower valve seat 21 with an externally threaded post 26, a fastening thread sleeve 23 and an upper thread cap 24. Wherein, the lower valve seat 21 is internally provided with a gas channel 27, and the gas channel 27 is communicated with the inside of the bag body 1. The fastening thread sleeve 23 is tightly matched with the external thread of the lower valve seat 21 and sleeved on the lower valve seat 21 so as to clamp and seal the edge of the air inlet of the bag body 1, thereby realizing detachable connection. The upper screw cap 24 is screw-coupled with the top end of the lower valve seat 21 through an internal screw provided at the inner wall thereof, a sampling hole 28 into which a sampling needle is inserted is provided at the center of the top end of the upper screw cap 24, and a rubber packing 25 is provided in the upper screw cap 24. The rubber packing 25 is embedded in the gas passage 27. The rubber gasket 25 has high elasticity, the sampling hole 28 is used for sampling or sampling by a sampling needle, and after the needle is pulled out, the rubber gasket 25 can be quickly sealed so as to be beneficial to closing a puncture, and after sampling for a plurality of times, the screw cap 24 needs to be replaced so as to ensure air tightness.
At least one O-shaped sealing ring 22 is sleeved between the lower valve seat 21 and the fastening thread sleeve 23, and the arrangement of the O-shaped sealing ring 22 further enhances the tightness between the metal air valve 2 and the bag body 1.
In summary, the antistatic gas sampling bag provided by the utility model has a simple structure, and the metal gas valve 2 is detachably connected to the bag body 1, so that the bag body can be easily combined with an external gas inlet pipe, the gas sampling operation time is short, and the gas sampling operation is quicker. Meanwhile, the tight fit among the fastening thread sleeve 23, the upper thread cap 24 and the lower valve seat 21 ensures the integral sealing performance, improves the sealing effect and is more beneficial to long-time transportation.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
1. An antistatic gas sampling bag comprises a bag body (1) and is characterized in that a metal gas valve (2) is detachably connected to a gas inlet of the bag body (1); the metal air valve (2) comprises a lower valve seat (21) with an external thread column (26), a fastening thread sleeve (23) and an upper thread cap (24); a gas channel (27) is arranged in the lower valve seat (21); the gas channel (27) is communicated with the inside of the bag body (1); the fastening thread sleeve (23) is tightly matched with the external thread of the lower valve seat (21) and sleeved on the lower valve seat (21) so as to clamp and seal the edge of the air inlet of the bag body (1); the upper threaded cap (24) is in threaded connection with the top end of the lower valve seat (21) through an internal thread arranged on the inner wall of the upper threaded cap; a sampling hole (28) for inserting a sampling needle is formed in the center of the top end of the upper threaded cap (24), and a rubber sealing gasket (25) is arranged in the upper threaded cap (24); the rubber gasket (25) is embedded in the gas passage (27).
2. Antistatic gas sampling bag according to claim 1, characterized in that at least one O-ring (22) is sleeved between the lower valve seat (21) and the fastening thread sleeve (23).
3. An antistatic gas sampling bag according to claim 2, wherein the bag body (1) comprises two bag sheets, and edges of the two bag sheets are fixed by adhesive bonding, so that a gas cavity is formed by surrounding the two bag sheets.
4. An antistatic gas sampling bag according to claim 3, wherein each of said bag sheets comprises, in order from inside to outside, a polyethylene film layer (11), an aluminum foil layer (12), a nylon film layer (13) and a polyurethane film layer (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322316011.8U CN221056164U (en) | 2023-08-28 | 2023-08-28 | Antistatic gas sampling bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322316011.8U CN221056164U (en) | 2023-08-28 | 2023-08-28 | Antistatic gas sampling bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221056164U true CN221056164U (en) | 2024-05-31 |
Family
ID=91200281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322316011.8U Active CN221056164U (en) | 2023-08-28 | 2023-08-28 | Antistatic gas sampling bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221056164U (en) |
-
2023
- 2023-08-28 CN CN202322316011.8U patent/CN221056164U/en active Active
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