CN104316367B - Device for collecting gas in plug type airtight container - Google Patents
Device for collecting gas in plug type airtight container Download PDFInfo
- Publication number
- CN104316367B CN104316367B CN201410528358.1A CN201410528358A CN104316367B CN 104316367 B CN104316367 B CN 104316367B CN 201410528358 A CN201410528358 A CN 201410528358A CN 104316367 B CN104316367 B CN 104316367B
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- Prior art keywords
- sleeve
- gas
- gas circuit
- screw
- hole
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Abstract
The invention discloses a device for collecting gas in a plug type airtight container, and the problem of sampling of gas inside a container sealed by adopting a plug manner in the engineering is solved. The device comprises a sleeve (1), an inner lead screw (2), a handle (3), a cylindrical sealing ring (4), a pressure meter (5), a sampling bag (6), a gas path hole (7) and the like, wherein the outer part of the sleeve (1) is connected with a sample container by adopting a rubber pipe in a sealing manner, the inner lead screw (2) is rotated by means of the rotating handle (3), and a plug is unscrewed by using a flat-opening end of the inner lead screw (2); the gas enters the sampling bag (6) through a gas path hole (7) in the wall of the sleeve (1) along an axial direction; the sealing is realized by using the cylindrical sealing ring (4) inside the sleeve (1), an annular sealing ring in a groove of the inner lead screw and a solid sealing grease among threads; the pressure meter (5) is screwed on an external gas path pipe. The device is suitable for collecting the gas inside the container sealed by adopting the plug manner.
Description
Technical field
The present invention relates to field tests, and in particular to a kind of device for screw plug formula sealed container interior gas collecting.
Background technology
Inside some armament systems due to load impulse charge or warhead charge due to itself decomposition, volatilization can produce
The certain gas of life, some gases such as isopropyl nitrate is aging due to the sealing ring inside armament systems, sealing be deteriorated and
In being diffused into the inner chamber of the even whole armament systems of launching tube, transmitting to weapon, lengthen the life, accident analysis and scrap process and bring
Potential safety hazard.Therefore, in such weapon the qualitative and quantitative detection of such gas be related to the emission security of weapon, reliability and
Armament systems are lengthened the life and maintenance work.Preserving, nitrogen pressure is 1 atmospheric pressure left side to the general all inflated with nitrogen of such armament systems
The right side, chamber wall is fiberglass or other metals, and sealing means are sealed using screw plug and fluid sealant mode.The interior gas of cylinder is most
Suitable sampling mode is gas in surge drum while screw plug is turned in sampling from screw plug, it is impossible to produce inside and outside gas exchange.
The gas collecting device sold on the market at present is primarily directed to the container with rubber stopper and samples, and is directly inserted into using needle tubing
In container, by piston or the negative pressure of air pump generation by collection and confinement of gases to sampler.For the appearance sealed using screw plug form
Device, due to chamber wall and screw plug intensity height, it is impossible to insert needle tubing, even if by punching insertion needle tubing also due to chamber wall and spiral shell
The stifled gas not being resilient such that inside and outside container produces hybrid switching, and extraneous air enters the standard of container internal influence internal gas
Deterministic parsing, or due to sealing, internal gas leakage during sampling causes internal gas quantitative analyses numerical value less than real
Actual value.The collection of the container internal gas sealed using screw plug form is also reported without related technology.
The content of the invention
In order to solve what is at present the canister internal gas sealed using screw plug form are acquired without correlation technique
Problem, the present invention provides a kind of device for screw plug formula sealed container interior gas collecting.
The present invention provide gas collecting device by sleeve, inner screw, sealing ring, gas circuit hole, pressure gauge, sampler bag,
Handss etc. are constituted.There is female thread the lower end of sleeve, there is one section of external screw thread in the middle of inner screw, is engaged with the female thread of sleeve, sleeve
Female thread and inner screw it is outside thread recessed in be coated with seal grease.The external screw thread end portion of inner screw has an annular
Sealing ring is embedded in the groove of inner screw；A cylindrical shape rubber seal is pasted with the inwall of sleeve upper end.Inner screw
Lower end is in flat mouth screwdriver shape, and the diameter of inner screw lower end 0.5mm～1mm bigger than the big footpath of internal thread of sleeve.Inner screw
Upper end be square, flexible handle is enclosed within the upper end of inner screw.There are a gas circuit hole, gas circuit hole point on the axial direction of sleeve
It is not connected with outer gas circuit pipe and pressure gauge, switch valve, vacuum pump and sampler bag is connected with outer gas circuit.
Advantages of the present invention：The gas collecting device that the present invention is provided is in sampling process with the external world without gas exchange, energy
Gaseous state inside true reflection container, can realize truly taking for the canister internal gas sealed using screw plug form
Sample.
Description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the assembling schematic diagram of the present invention.1. sleeve in figure, 2. inner screw, 3. handle, 4. cylinder shape sealing ring, 5.
Pressure gauge, 6. sampler bag, 7. gas circuit hole, 8. screw thread, 9. annular seal circle, 10. sleeve end portion, 11. inner screw lower ends
Part, 12. first gas circuit valves, 13. gas circuit pipes, 14. second gas circuit valves, the container of 15. small vacuum pump 16., 17. screw plugs, 18. screws
Bar, 19. rubber tubes.
Fig. 2 is the schematic diagram of handle in Fig. 1.20. square opening in figure.
Specific embodiment
As shown in figure 1, the assembling schematic diagram for gas collecting device of the present invention when in use.By rubber tube 19 by sleeve
1 end portion 10 is connected with the screw bar 18 of container 16.Then the first gas circuit valve 12 and the second gas circuit valve 14 are opened, is opened little
Vacuum pump 15, when the numerical value of pressure gauge 5 is close to 0, continues evacuation 10min, is then shut off the second gas circuit valve 14 and little true
Empty pump 15, waits the 10min observation change in values of pressure gauge 5.When the numerical value of pressure gauge 5 keeps constant, the first gas circuit valve 12 is closed.
Swing handle 3 moves downward inner screw 2, until the flat mouth of inner screw end portion 11 enters the groove of the upper surface of screw plug 17,
Then handle 3 is rotated backward until screw plug 17 is exited from screw bar 18.Then proceeding to rotate backward handle 3 makes under inner screw 2
The sealing ring 9 at end contacts with the screw of sleeve 1, plays sealing function.Then static 20min or so, make gas container 16,
Fully spread in the cavity of the composition such as gas circuit hole 7 and gas circuit pipe 13, it is ensured that samples' representativeness, then open the first gas circuit valve
12, gas is entered in sampler bag 6.When gassy in sampler bag 6, the first gas circuit valve 12 is closed, remove sampler bag, complete to adopt
Sample.
Claims (1)
1. a kind of device for screw plug formula sealed container interior gas collecting, it is characterised in that the gas collecting device includes
Sleeve (1), inner screw (2), handle (3), cylinder shape sealing ring (4), pressure gauge (5), sampler bag (6), gas circuit hole (7)；It is described
There is one section of female thread sleeve (1) lower end, and centre position of the upper end without female thread portion is pasted with cylinder shape sealing ring (4), sleeve
(1) there is a non-through gas circuit hole (7) on wall axial direction, in the end of gas circuit hole (7) two radial holes are equipped with, wherein a hole makes gas circuit hole
(7) be connected with pressure gauge (5), pressure gauge (5) and the radial hole adopt thread connecting mode, another hole by external gas circuit and
Sampler bag (6) is connected；There is one section of external screw thread the lower end of inner screw (2), is mutually engaged with the female thread of sleeve (1), between screw thread (8)
Sealed solid fat is scribbled, at the end of inner screw (2) external screw thread lower end an annular groove is carved with, it is close that annular groove is embedded with annular
Seal (9)；Inner screw (2) is gradually becoming flat mouth screwdriver shape at annular groove from cylinder；Inner screw (2) it is upper
End is connected in square with handle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528358.1A CN104316367B (en) | 2014-10-09 | 2014-10-09 | Device for collecting gas in plug type airtight container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528358.1A CN104316367B (en) | 2014-10-09 | 2014-10-09 | Device for collecting gas in plug type airtight container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104316367A CN104316367A (en) | 2015-01-28 |
| CN104316367B true CN104316367B (en) | 2017-04-12 |
Family
ID=52371629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410528358.1A Expired - Fee Related CN104316367B (en) | 2014-10-09 | 2014-10-09 | Device for collecting gas in plug type airtight container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104316367B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764862B (en) * | 2015-05-05 | 2016-08-17 | 西安近代化学研究所 | A kind of gas concentration on-the-spot test method |
| CN104792943B (en) * | 2015-05-05 | 2017-03-01 | 西安近代化学研究所 | A kind of gas on-site testing device sealing rigid container for screw plug |
| CN106092661A (en) * | 2016-08-26 | 2016-11-09 | 山东太古飞机工程有限公司 | Civil aircraft fuel emission and fuel oil sample devices |
| CN109632403B (en) * | 2018-12-06 | 2024-02-06 | 成都华科阀门制造有限公司 | Gas collection device |
| CN112014171A (en) * | 2020-07-31 | 2020-12-01 | 西安近代化学研究所 | Sampling device and method for gas in sealed pressure container |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698167A (en) * | 2014-01-04 | 2014-04-02 | 上海市环境科学研究院 | Portable controllable automatic soil gas quantitative sampling device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044847A (en) * | 1983-08-23 | 1985-03-11 | Matsushita Electric Ind Co Ltd | Gas-sample collecting apparatus |
| CN202305285U (en) * | 2011-10-17 | 2012-07-04 | 清远嘉博制药有限公司 | Toxic gas collecting device |
-
2014
- 2014-10-09 CN CN201410528358.1A patent/CN104316367B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698167A (en) * | 2014-01-04 | 2014-04-02 | 上海市环境科学研究院 | Portable controllable automatic soil gas quantitative sampling device |
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| Publication number | Publication date |
|---|---|
| CN104316367A (en) | 2015-01-28 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20201009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |