CN104316367A - Gas collecting device - Google Patents
Gas collecting device Download PDFInfo
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- CN104316367A CN104316367A CN201410528358.1A CN201410528358A CN104316367A CN 104316367 A CN104316367 A CN 104316367A CN 201410528358 A CN201410528358 A CN 201410528358A CN 104316367 A CN104316367 A CN 104316367A
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- gas
- sleeve
- gas circuit
- inner screw
- hole
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Abstract
The invention discloses a gas collecting device which solves the problem of sampling of gas inside a container sealed by adopting a plug manner in the engineering. The gas collecting 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 gas collecting 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, be specifically related to a kind of gas collecting device.
Background technology
The inner impulse charge due to filling of some armament systems or warhead charge can produce certain gas due to self decomposition, volatilization, some gas is if isopropyl nitrate is due to O-ring seal aging of armament systems inside, sealing is deteriorated and is diffused in the inner chamber of the even whole armament systems of launching tube, to the transmitting of weapon, lengthen the life, fault analysis and scrap process and bring potential safety hazard.Therefore, in such weapon, the qualitative and quantitative detection of this type of gas is related to lengthening the life and maintenance job of the emission security of weapon, reliability and armament systems.The general all inflated with nitrogen of such armament systems are preserved, and nitrogen pressure is 1 atm higher, and chamber wall is fiberglass or other metal, and sealing means adopts screw plug and fluid sealant mode to seal.In cylinder, the most suitable sampling mode of gas is gas in surge drum while of namely turning on screw plug from screw plug sampling, can not produce inside and outside gas exchanges.At present gas collecting device sold on the market mainly sample for the container with rubber plug, directly adopts needle tubing to be inserted in container, by the negative pressure of piston or air pump generation by gas collection in sampling thief.For the container adopting the sealing of screw plug form, due to chamber wall and screw plug intensity high, needle tubing can not be inserted, also the gas inside and outside container can be made to produce hybrid switching owing to there is no elasticity due to chamber wall and screw plug even if insert needle tubing by punching, extraneous air enters the accurate qualitative analysis that internal tank affects internal gas, or owing to sealing, during sampling, internal gas leaks and causes internal gas quantitative test numerical value lower than actual value.Adopt the collection of the internal tank gas of screw plug form sealing also without relevant technology report.
Summary of the invention
In order to solve at present without the problem that correlation technique gathers the canister internal gas adopting screw plug form to seal, the invention provides a kind of gas collecting device.
Gas collecting device provided by the invention is made up of sleeve, inner screw, O-ring seal, gas circuit hole, tensimeter, sampler bag, handle etc.There is internal thread the lower end of sleeve, has one section of external thread in the middle of inner screw, matches with the internal thread of sleeve, the internal thread of sleeve and inner screw outside thread recessed in all scribble seal grease.The external thread end portion of inner screw has an annular seal circle to be embedded in the groove of inner screw; The inwall of sleeve upper end is pasted with a cylindrical shape rubber seal.The lower end of inner screw is flat mouth screwdriver shape, and the diameter of inner screw lower end 0.5mm ~ 1mm larger than the large footpath of internal thread of sleeve.The upper end of inner screw is square, and flexible handle is enclosed within the upper end of inner screw.The axial direction of sleeve has a gas circuit hole, and gas circuit hole is connected with tensimeter with outer gas circuit pipe respectively, outer gas circuit is connected with switch valve, vacuum pump and sampler bag.
Advantage of the present invention: gas collecting device provided by the invention truly can reflect the gaseous state of internal tank with extraneous without gas exchanges in sampling process, can realize the true sampling of the canister internal gas adopting the sealing of screw plug form.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is assembling schematic diagram of the present invention.1. sleeves, 2. inner screw, 3. handle in figure, 4. cylindrical shape O-ring seal, 5. tensimeter, 6. sampler bag, 7. gas circuit hole, 8. screw thread, 9. annular seal circle, 10. sleeve end portion, 11. inner screw end portions, 12,14. gas circuit valves, 13. gas circuit pipes, 15. small vacuum pump 16. containers, 17. screw plugs, 18. screw bars, 19. rubber tubes.
Fig. 2 is the schematic diagram of handle in Fig. 1.20. square openings in figure.
Embodiment
As shown in Figure 1, be gas collecting device of the present invention assembling schematic diagram in use.By rubber tube 19, the end portion 10 of sleeve 1 is connected with the screw bar 18 of container 16.Then open gas circuit valve 12 and 14, open small vacuum pump 15, when tensimeter 5 numerical value close to 0 time, continue to vacuumize 10min, then close gas circuit valve 14 and small vacuum pump 15, wait for that 10min observes tensimeter 5 numerical value change.When tensimeter 5 numerical value remains unchanged, close gas circuit valve 12.Swing handle 3 makes inner screw 1 move downward, until the flat mouth of inner screw end portion 11 enters the groove of screw plug 17 upper surface, then rotates backward handle 3 until screw plug 17 exits from screw bar 18.Then continuing to rotate backward handle 3 makes the O-ring seal 9 of inner screw 2 lower end contact with the screw of sleeve 2, plays sealing function.Then static about 20min, makes gas fully spread in the cavity that container 16, gas circuit hole 7 and gas circuit pipe 13 etc. form, and ensure samples' representativeness, then open gas circuit valve 12, gas enters in sampler bag 6.When in sampler bag 6 during gassy, close gas circuit valve 12, take off sampler bag, complete sampling.
Claims (1)
1. a gas collecting device, it is characterized in that, be made up of sleeve (1), inner screw (2), handle (3), cylindrical shape O-ring seal (4), tensimeter (5), sampler bag (6), gas circuit hole (7) etc.; There is one section of internal thread described sleeve (1) lower end, upper end is pasted with cylindrical shape O-ring seal (4) without the centre position of female thread portion, sleeve (1) wall axially has a non-through gas circuit hole (7), two radial holes are equipped with at the end of gas circuit hole (7), wherein a hole makes gas circuit hole (7) be connected with tensimeter (5), tensimeter (5) and this radial hole adopt thread connecting mode, and another hole is connected with sampler bag (6) by external gas circuit; There is one section of external thread the lower end of inner screw (2), be engaged mutually with the internal thread of sleeve (1), between screw thread, (8) scribble sealed solid fat, an annular groove is carved with at end place, inner screw (2) external thread lower end, and annular groove is embedded with annular seal circle (9); Inner screw (2) is becoming flat mouth screwdriver shape near annular groove place gradually from right cylinder; The upper end of inner screw (2) is that square is connected with swing 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 true CN104316367A (en) | 2015-01-28 |
| CN104316367B 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764862A (en) * | 2015-05-05 | 2015-07-08 | 西安近代化学研究所 | Gas concentration site testing method |
| CN104792943A (en) * | 2015-05-05 | 2015-07-22 | 西安近代化学研究所 | Gas field testing device |
| 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 |
| CN109632403A (en) * | 2018-12-06 | 2019-04-16 | 成都华科阀门制造有限公司 | A kind of gas collecting 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 (3)
| 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 |
| 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 |
-
2014
- 2014-10-09 CN CN201410528358.1A patent/CN104316367B/en not_active Expired - Fee Related
Patent Citations (3)
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 李官贤 等: ""低浓度气体检测管及其采样装置的研究"", 《解放军预防医学杂志》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764862A (en) * | 2015-05-05 | 2015-07-08 | 西安近代化学研究所 | Gas concentration site testing method |
| CN104792943A (en) * | 2015-05-05 | 2015-07-22 | 西安近代化学研究所 | Gas field testing device |
| 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 |
| 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 |
| CN109632403A (en) * | 2018-12-06 | 2019-04-16 | 成都华科阀门制造有限公司 | A kind of gas collecting device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104316367B (en) | 2017-04-12 |
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Granted publication date: 20170412 Termination date: 20201009 |