CN104989948B - The quantitative leak-checking apparatus and method of bottle group - Google Patents
The quantitative leak-checking apparatus and method of bottle group Download PDFInfo
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- CN104989948B CN104989948B CN201510328663.0A CN201510328663A CN104989948B CN 104989948 B CN104989948 B CN 104989948B CN 201510328663 A CN201510328663 A CN 201510328663A CN 104989948 B CN104989948 B CN 104989948B
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Abstract
The invention discloses the quantitative leak-checking apparatus of bottle group, it is sealedly connected in tested bottle group, quantitative leak-checking apparatus includes the first balance cavity, communication means, the second balance cavity, difference gauge and vacuum extractor, first balance cavity has opening, tested bottle group is stretched at opening in the first counter balance pocket body, and the outer wall of tested bottle group is tightly connected with opening contact portion；Difference gauge connects two balance cavitys respectively, for measuring the pressure difference in two counter balance pocket bodies；Vacuum extractor is connected in communication means can be by the first balance cavity and the second balance cavity while being evacuated to vacuum；Communication means include connection first and balance the first conduit of cavity and connect the second conduit of the second balance cavity, first switch is provided between first conduit and the second conduit, first conduit and the second conduit are connected by house steward with vacuum extractor, and house steward is provided with second switch.Suitable environment of the present invention requires low, can fast and effeciently quantitative measurment go out the quantity of gas leakage of tested bottle group, safe and reliable error is small.
Description
Technical field
The invention belongs to leak detecting device field, it is more particularly, to a kind of detection container valve and its with container junction
The quantitative leak-checking apparatus and method of no close bottle group.
Background technology
The leakage measurement of container value is commonly used for control container and the processing technology and mounting process of valve, causes a bottle group to be let out
The principal element of leakage is：1st, the junction connection of bottle group and container value is unreliable causes to leak；2nd, container value itself product
Quality it is unreliable, there is leakage point.
Traditional bottle group leak hunting method is that whole bottle group is put into pond to be hunted leak by observing bubble, but this
Process, which is only relied on, visually observes leak detection so as to qualitative detection, it is impossible to realizes specific quantitative measurment leakage rate, and soaks for a long time
Bottle group can be corroded in water.Some domestic fire-fighting enterprises also have to use to cover whole bottle group to be vacuumized again, passes through instrument
The gas of timed collection leakage simultaneously detects its gas componant to judge, but its process costs is higher, be suitable only for measurement volume compared with
Small bottle group.Patent CN202091774 discloses a kind of quantitative leak-checking apparatus of extinguishing chemical bottle group, and the leak-checking apparatus can be quick
Ground quantitatively detects the leakage rate of bottle outlet group, but it has following problems：1st, temperature change can cause effect of expanding with heat and contract with cold in air,
Influence is produced on accuracy of detection, there is larger error, it is therefore desirable to be put into constant temperature laboratory and detected, is unfavorable for construction existing
The detection of field；2nd, using the mounting means of threaded connection, container value compresses sealing ring and sealed, and is difficult to fix detection means
Positioning.
The content of the invention
In order to overcome the deficiencies in the prior art, present invention offer one kind is simple in construction, can be let out with Quantitative detection bottle group
The quantitative leak-checking apparatus and method of the bottle group of leakage quantity.
The technical solution adopted for the present invention to solve the technical problems is：The quantitative leak-checking apparatus of a kind of bottle of group, sealing connects
Be connected in tested bottle group, the quantitative leak-checking apparatus include the first balance cavity, communication means, can be by the communication means and the
The second balance cavity, difference gauge and the vacuum extractor of one balance cavity connection, the first balance cavity have opening, are tested
Bottle group is stretched at opening in the first counter balance pocket body, and the outer wall of tested bottle group is tightly connected with opening contact portion；Differential pressure is scored
Not Lian Jie first balance cavity and second balance cavity, for measure two counter balance pocket bodies in pressure difference；Vacuum extractor passes through
Communication means are connected with the first balance cavity and the second balance cavity respectively, for the first balance cavity and second to be balanced into cavity
It is evacuated to vacuum；The communication means include the first conduit of the balance cavity of connection first and led with connect the second balance cavity second
Pipe, is provided with first switch, the first conduit and the second conduit are by house steward with vacuumizing between first conduit and the second conduit
Device is connected, and house steward is provided with second switch.First balance cavity is connected with tested bottle group negative-pressure adsorption, connection not only quick letter
Single and close, more preferably, the first balance cavity and the second balance cavity reduce variation of ambient temperature to sealing in vacuum state
Caused influence of expanding with heat and contract with cold, reduces the error of measurement, the requirement reduction to measuring environment.By a vacuum extractor just
First balance cavity and the second balance cavity can simultaneously be vacuumized, it is ensured that the first balance cavity and the second balance cavity are in phase
Same vacuum, i.e., with the initial negative pressure value of identical.Difference gauge can intuitively show the first balance cavity and the second balance
Pressure difference between cavity, so that fast quantification measures the leakage rate of gas in the first counter balance pocket body.First switch and second is opened
The setting of pass, realizes the cut-off in initial identical negative pressure value and test process in two balance cavitys of control.
Further, the second balance cavity is located at the periphery of the first balance cavity, the bottom negative pressure of the second balance cavity
Absorption is connected to the outer wall of the first balance cavity.Connected between first balance cavity and the second balance cavity by negative-pressure adsorption,
Connection is even closer, and sealing is guaranteed.
Further, the second balance cavity is bolted in the outer wall of the first balance cavity located at the periphery of the first balance cavity
On.
Further, the second balance cavity is located at the periphery of the first balance cavity, with the first counter balance pocket body by integral forming.
Further, the first balance cavity and the second balance cavity are independently arranged.
Further, it is tested bottle group and the coupling part of the first balance cavity is provided with seal.Seal make it that first is flat
The sealing between cavity and tested bottle group that weighs is reliable.
Further, seal is O-shaped sealing ring.
Further, vacuum means are set to aspiration pump.
Present invention also offers the leak detection method that a kind of quantitative leak-checking apparatus using above-mentioned bottle group measures bottle group leakage rate,
Comprise the following steps：
1）Quantitative leak-checking apparatus is covered in above the tested bottle group with container value, difference gauge is opened, aspiration pump is connected
Onto house steward, first switch and second switch are opened, starts aspiration pump and takes out the first balance cavity and the second balance cavity simultaneously
Vacuum；
2）Second switch is first closed, first switch is turned off；
3）Tested bottle group gas leakage causes pressure in the first counter balance pocket body to increase, and difference gauge produces deflection；
4）According to the pressure between the deflection numerical measuring first balance cavity shown on difference gauge and the second balance cavity
Difference, quantitatively calculates the leakage rate of tested bottle group.
The beneficial effects of the invention are as follows simple in construction, install convenient, suitable environment requires low, can fast and effeciently quantify
The quantity of gas leakage of tested bottle group is measured, safe and reliable, error is small.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is structural representation of the invention.
Fig. 2 is part section structural representation of the invention.
Fig. 3 is fundamental diagram of the invention.
Embodiment
In order that those skilled in the art are better understood from the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, clear, complete description is carried out to the technical scheme in inventive embodiments, it is clear that described embodiment is only this
A part of embodiment of invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, should all belong to the scope of protection of the invention.
Embodiment 1
Shown referring to Figures 1 and 2, the quantitative leak-checking apparatus of a kind of bottle of group covers on the top of tested bottle group 1, the quantitative survey
Leakage device includes the first balance cavity 2, communication means, the second balance cavity 3, difference gauge 4 and vacuum extractor.First counter balance pocket
Body 2 is hollow circular cylinder structure, and its one end has opening, and tested bottle group 1 is stretched at the opening in the first balance cavity 2, from
And the container value 11 of tested bottle group 1 is located in the first balance cavity 2, with being tested the outer of bottle group 1 at the opening of the first balance cavity 2
Wall is tightly connected, so as to form closed space between the first balance cavity 2 and tested bottle group 1.Second balance cavity 3 is located at the
The periphery of one balance cavity 2, i.e., the outer wall of the first balance cavity 2 is the inwall of the second balance cavity 3, and second balances cavity 3
Outer wall has the forge piece of step type structure to contract, and its lower end also has the opening stretched into for tested bottle group 1.First balance cavity 2
It is in the top surface of the second balance cavity 3 in same level, the upper position for being located at the first balance outer wall of cavity 2 in top surface is installed
It is that the first pin 41 and second pin 42 balance cavity 2 with first respectively to have two pressure passages on difference gauge 4, difference gauge 4
Connected with the second balance cavity 3.It is same to be communicated with part close to the top position of the first balance outer wall of cavity 2 in top surface,
The communication means include the first conduit 51 outwardly connected from the first balance cavity 2 and outwardly connected from the second balance cavity 3
The second logical conduit 52, the first conduit 51 and the second conduit 52 are connected further through house steward 54 and are connected with vacuum extractor, from
And just the first balance balance cavity 3 of cavity 2 and second can simultaneously be vacuumized with a vacuum extractor, i.e., the first balance cavity
2 and second balance cavity 3 between have identical vacuum identical negative pressure.It is provided between first conduit 51 and the second conduit 52
For controlling first to balance the first switch 53 that cavity 2 and second balances connection and closing between cavity 3, house steward 54 is provided with
The second switch 55 for the relation that is in communication with the outside for the balance balance cavity 3 of cavity 2 and second of control first.The specific interconnecting part
Part can be two valve treble ported slide valves.After vacuum extractor, which extracts first out, balances the air in the balance cavity 3 of cavity 2 and second,
Because the outer wall that ambient atmos pressure is more than at internal gas pressure, the lower openings of the first balance cavity 2 with tested bottle group 1 is inhaled
It is attached to connect, seal 6, Yu Ben can be set in tested bottle group 1 and first balance cavity 2 contact-and-connection portion to increase air-tightness
Seal 6 is O-shaped sealing ring in embodiment, and the outer wall at the lower openings of the second balance cavity 3 with the first balance cavity 2 is inhaled
It is attached to connect.Aspiration pump is set to vacuum means in the present embodiment.
Shown in reference picture 3, when a measurement is taken, quantitative leak-checking apparatus is covered on into tested bottle group 1 with the side of container value 11
Top, open difference gauge 4, aspiration pump be connected on house steward 54, open first switch 53 and second switch 55, start pumping
The first balance balance internal gas of cavity 3 of cavity 2 and second is discharged in air by pump by communication means, and cavity is balanced by two
It is evacuated to after the vacuum of setting and first closes second switch 55, turns off first switch 53, it is whole quantitative due to the effect of atmospheric pressure
Leak-checking apparatus is tightly adsorbed on the tested outer wall of bottle group 1.In measurement process, when bottle group, which exists, to be leaked, the first balance cavity 2
Its internal pressure can be caused to increase due to the gas of leakage, the pressure formed between the first balance balance cavity 3 of cavity 2 and second
Difference, difference gauge 4 shows the pressure difference, and tested bottle group 1 is drawn according to tested bottle group 1 pressure change coefficient caused by leakage
Leakage rate, the computational methods are prior art, are repeated no more.
Embodiment 2
The present embodiment and the difference of embodiment 1 are that the outer wall top of the first balance cavity 2 is provided with external screw thread, the
Two balance cavitys 3 carry the hollow cylindrical structure to contract ledge structure for upper end, and its convex edge is provided with screw thread, the second balance
The top of cavity 3 and the top of the first balance cavity 2 are spirally connected, and the bottom negative-pressure adsorption of the second balance cavity 3 is in the first counter balance pocket
Closed space is formed on the outer wall of body 2, likewise, the bottom of the second balance cavity 3 can also be screwed onto the first balance cavity 2
Outer wall on.Other contents are same as Example 1 to be repeated no more.
Embodiment 3
The present embodiment and the difference of embodiment 1 are that the second balance cavity 3 is integrally formed with the first balance cavity 2
Ground is fixedly connected on the periphery of the first balance cavity 2, and the second balance cavity 3 can be the closed container in arbitrary shape.
Embodiment 4
The present embodiment and the difference of embodiment 1 are that the second balance cavity 3 is to balance cavity 2 different from first, with
Separate presence closed container, its can in arbitrary shape set.
Above-mentioned embodiment is used for illustrating the present invention, rather than limits the invention, the present invention's
In spirit and scope of the claims, any modifications and changes made to the present invention both fall within the protection model of the present invention
Enclose.
Claims (9)
1. the quantitative leak-checking apparatus of a kind of bottle of group, is sealedly connected on tested bottle group（1）On, it is characterised in that：It is described quantitatively to leak hunting
Device includes the first balance cavity（2）, communication means, can pass through the communication means with first balance cavity（2）The second of connection
Balance cavity（3）, difference gauge（4）And vacuum extractor, the first balance cavity（2）With opening, bottle group is tested（1）From opening
The first balance cavity is stretched at mouthful（2）It is interior, it is tested bottle group（1）Outer wall be tightly connected with opening contact portion；Difference gauge（4）Point
Lian Jie not the first balance cavity（2）With the second balance cavity（3）, for measuring the pressure difference in two counter balance pocket bodies；Vacuum means
Put and balance cavity with first respectively by communication means（2）With the second balance cavity（3）Connection, for balancing cavity by first
（2）With the second balance cavity（3）It is evacuated to vacuum；The communication means include connection first and balance cavity（2）The first conduit
（51）Cavity is balanced with connecting second（3）The second conduit（52）, first conduit（51）With the second conduit（52）Between set
There is first switch（53）, the first conduit（51）With the second conduit（52）Pass through house steward（54）It is connected with vacuum extractor, house steward
（54）It is provided with second switch（55）.
2. the quantitative leak-checking apparatus of bottle group according to claim 1, it is characterised in that：The second balance cavity（3）If
Cavity is balanced in first（2）Periphery, this second balance cavity（3）Bottom negative-pressure adsorption be connected to the first balance cavity（2）
Outer wall.
3. the quantitative leak-checking apparatus of bottle group according to claim 1, it is characterised in that：The second balance cavity（3）If
Cavity is balanced in first（2）Periphery, be bolted in the first balance cavity（2）Outer wall on.
4. the quantitative leak-checking apparatus of bottle group according to claim 1, it is characterised in that：The second balance cavity（3）If
Cavity is balanced in first（2）Periphery, with first balance cavity（2）It is integrally formed.
5. the quantitative leak-checking apparatus of bottle group according to claim 1, it is characterised in that：The first balance cavity（2）With
Second balance cavity（3）It is independently arranged.
6. the quantitative leak-checking apparatus of bottle group according to claim 1, it is characterised in that：The tested bottle group（1）With first
Balance cavity（2）Coupling part be provided with seal（6）.
7. the quantitative leak-checking apparatus of bottle group according to claim 6, it is characterised in that：The seal（6）For O-shaped sealing
Ring.
8. the quantitative leak-checking apparatus of bottle group according to claim 1, it is characterised in that：The vacuum means are set to pumping
Pump.
9. a kind of leak detection method of the quantitative leak-checking apparatus of the bottle group described in utilization claim any one of 1-8, it is characterised in that
Comprise the following steps：
Quantitative leak-checking apparatus is covered in container value（11）Tested bottle group（1）Top, opens difference gauge（4）, by aspiration pump
It is connected to house steward（54）On, open first switch（53）And second switch（55）, start aspiration pump and balance cavity by first（2）With
Second balance cavity（3）Vacuumize simultaneously；
First close second switch（55）, turn off first switch（53）；
Tested bottle group（1）Gas leakage causes the first balance cavity（2）Interior pressure increase, difference gauge（4）Produce deflection；
According to difference gauge（4）The balance cavity of deflection numerical measuring first of upper display（2）With the second balance cavity（3）Between pressure
It is strong poor, quantitatively calculate tested bottle group（1）Leakage rate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510328663.0A CN104989948B (en) | 2015-06-15 | 2015-06-15 | The quantitative leak-checking apparatus and method of bottle group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510328663.0A CN104989948B (en) | 2015-06-15 | 2015-06-15 | The quantitative leak-checking apparatus and method of bottle group |
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| CN104989948A CN104989948A (en) | 2015-10-21 |
| CN104989948B true CN104989948B (en) | 2017-07-21 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109578809B (en) * | 2018-12-29 | 2024-02-06 | 武汉格罗夫氢能汽车有限公司 | Leakage monitoring device applied to hydrogen supply system |
| CN112082090B (en) * | 2019-09-18 | 2022-07-12 | 朴成浩 | Leakage detection and explosion-proof heat preservation device for ultralow-temperature liquefied gas storage tank |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587006A (en) * | 2009-06-18 | 2009-11-25 | 齐诺精密系统自动化(天津)有限公司 | Air tightness detecting system used for lithium battery and detecting method thereof |
| JP4821553B2 (en) * | 2006-10-12 | 2011-11-24 | 三菱電機株式会社 | Leak inspection device |
| CN202091774U (en) * | 2011-05-13 | 2011-12-28 | 浙江信达可恩消防实业有限责任公司 | Quantitative leakage detection device for extinguishant bottle set |
| CN103822761A (en) * | 2014-01-03 | 2014-05-28 | 中国空间技术研究院 | Sealing detection apparatus and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11237300A (en) * | 1998-02-20 | 1999-08-31 | Ishikawajima Inspection & Instrumentation Co | Drum can leakage inspection device due to differential pressure method |
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- 2015-06-15 CN CN201510328663.0A patent/CN104989948B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4821553B2 (en) * | 2006-10-12 | 2011-11-24 | 三菱電機株式会社 | Leak inspection device |
| CN101587006A (en) * | 2009-06-18 | 2009-11-25 | 齐诺精密系统自动化(天津)有限公司 | Air tightness detecting system used for lithium battery and detecting method thereof |
| CN202091774U (en) * | 2011-05-13 | 2011-12-28 | 浙江信达可恩消防实业有限责任公司 | Quantitative leakage detection device for extinguishant bottle set |
| CN103822761A (en) * | 2014-01-03 | 2014-05-28 | 中国空间技术研究院 | Sealing detection apparatus and method |
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