CN108061245A - Use the gas displacement method and device of intermediary's gas - Google Patents
Use the gas displacement method and device of intermediary's gas Download PDFInfo
- Publication number
- CN108061245A CN108061245A CN201711370771.XA CN201711370771A CN108061245A CN 108061245 A CN108061245 A CN 108061245A CN 201711370771 A CN201711370771 A CN 201711370771A CN 108061245 A CN108061245 A CN 108061245A
- Authority
- CN
- China
- Prior art keywords
- gas
- container
- intermediary
- density
- degassing method
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Two kinds of gases of the small A gas of density difference and B gas easily mix, it is difficult to realize gas displacement, can use intermediary gas of the C gas larger with both gas density difference as replacement process, be carried out in two steps.If C gas is bigger than A gas and B air tightnesses, the first step uses upward degassing method, C gas enters from container bottom opening, A gas from container open top is squeezed away, the A gas in container is made to be replaced as C gas, second step uses downward degassing method, B gas enters from container open top, C gas from container open top is squeezed away, the C gas in container is made to be replaced as B gas, realizes the gas displacement in container；If C gas is smaller than A gas and B air tightnesses, the first step uses downward degassing method, and second step uses upward degassing method.
Description
Technical field
Gas displacement method and device.
Background technology
The gas in container or confined space is replaced, another gas is substituted with a kind of gas, upward degassing method can be used
Or downward degassing method, it but needs the density contrast of two kinds of gases larger, is just not easy to mix, it is big that the small gas of density floats over density
On gas, layering and gas displacement are realized.If the density difference of two kinds of gases is small, gaseous mixture, replacement result are easily become
Difference can not replace.
In this case the fluid-discharge therapies substitution gas such as draining can be used, but cost is higher, can be mixed in gas a large amount of
Liquid vapour reduces gas purity, also needs to remove liquid vapour again after displacement.
The content of the invention
It is easily mixed to solve two kinds of small gases of density difference, it is difficult to which the problem of realizing gas displacement, the present invention use
Following scheme：The density of two kinds of gases or gaseous mixture if necessary to displacement is larger, using the smaller gas of density as intermediary
Gas；If the density of two kinds of gases or gaseous mixture is smaller, the gas larger using density is as intermediary's gas.
Using the C gas larger with both gas density difference as intermediary's gas of replacement process, it is carried out in two steps.If
C gas is bigger than A gas and B air tightnesses, the first step, and using upward degassing method, C gas enters from container bottom opening, by A gas from vessel top
Portion's opening is squeezed away, and the A gas in container is made to be replaced as C gas, second step, and using downward degassing method, B gas is from container open top
Into C gas from container open top is squeezed away, the C gas in container is made to be replaced as B gas, realizes the gas displacement in container.
If C gas is smaller than A gas and B air tightnesses, the first step uses downward degassing method, and second step uses upward degassing method.
Intermediary's gas is preferably not flammable explosive gas, can not be chemically reacted with two kinds of gases for needing to replace.
Intermediary's gas density and two kinds of gas density difference for needing to replace are about small, and replacement result is better.
Requirement to substitution gas container：There are valve in top and bottom, as air inlet/outlet.
Exhaust outlet will have concentration detection apparatus.
Intermediary's gas concentration unit can be installed in drain tap position.
During operation, by valve regulated, gas outlet diameter is than air inlet diameter bigger.
Specific embodiment
Exemplified by the air in container is replaced with pure nitrogen gas.Air is gaseous mixture, wherein 78% is nitrogen, in equal air pressure
Under, atmospheric density and nitrogen difference very little can not use upward degassing method or downward degassing method to realize displacement.It can use at this time
Density ratio nitrogen and the much smaller hydrogen of air or helium realize gas displacement as intermediary's gas, if using hydrogen, to have
The condition of burn-proof and explosion prevention.
The top of gas container and bottom end opening, equipped with valve, at top, valve is connected by tracheae with hydrogen cylinder, bottom
Valve is equipped with density of hydrogen detection device.
Bottom valve is opened, valve is slowly injected into hydrogen in container from top, since hydrogen density is smaller than air, can float
On air, air pressure caused by gas transmission slowly makes air be discharged from bottom valve, until bottom valve doorway detects that hydrogen is dense
When degree reaches a hundred percent, bottom valve is first closed, closes top valve afterwards, at this time density of hydrogen a hundred percent in container.
Then, bottom valve connects nitrogen cylinder, top valve connection nitrogen gas concn detection device and Hydrogen collection device, beats
Top valve is opened, then nitrogen is injected in container from bottom valve, density of nitrogen is smaller than hydrogen, can be deposited on container bottom, defeated
Air pressure caused by gas slowly makes hydrogen be discharged from top valve, is collected by Hydrogen collection device, treats that top valve port detects nitrogen
When gas concentration reaches a hundred percent, top valve is first closed, turns off bottom valve, nitrogen gas concn is percent in container at this time
Hundred, realize the purpose that the air in container is replaced as to nitrogen completely.
Claims (2)
1. using the gas displacement method and device of intermediary's gas, it is characterized in that：If necessary to two kinds of gases of displacement or mixing
The density of gas is larger, using the smaller gas of density as intermediary's gas；If the density of two kinds of gases or gaseous mixture is smaller, use
The larger gas of density is as intermediary's gas；
Using the C gas larger with both gas density difference as intermediary's gas of replacement process, it is carried out in two steps.If C gas
Bigger than A gas and B air tightnesses, the first step, using upward degassing method, C gas enters from container bottom opening, by A gas from container top
Opening is squeezed away, and the A gas in container is made to be replaced as C gas, second step, using downward degassing method, B gas from container open top into
Enter, C gas is squeezed away from container open top, the C gas in container is made to be replaced as B gas, realize the gas displacement in container；If
C gas is smaller than A gas and B air tightnesses, and the first step uses downward degassing method, and second step uses upward degassing method；
Intermediary's gas is preferably not flammable explosive gas, can not be chemically reacted with two kinds of gases for needing to replace, intermediary
Gas density and two kinds of gas density difference for needing to replace are about small, and replacement result is better.
2. using the gas displacement method and device of intermediary's gas, it is characterized in that：There are valve in substitution gas container head and bottom,
As air inlet/outlet, exhaust outlet has concentration detection apparatus, can install intermediary's gas concentration unit in drain tap position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370771.XA CN108061245A (en) | 2017-11-30 | 2017-11-30 | Use the gas displacement method and device of intermediary's gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370771.XA CN108061245A (en) | 2017-11-30 | 2017-11-30 | Use the gas displacement method and device of intermediary's gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108061245A true CN108061245A (en) | 2018-05-22 |
Family
ID=62139157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711370771.XA Pending CN108061245A (en) | 2017-11-30 | 2017-11-30 | Use the gas displacement method and device of intermediary's gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108061245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267423A (en) * | 2021-06-21 | 2021-08-17 | 贵州茅台酒股份有限公司 | Cabin body simulation device and gas introduction and gas detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1157931A1 (en) * | 2000-05-20 | 2001-11-28 | Harcostar Drums Limited | Method and apparatus for gassing of containers |
| CN1890152A (en) * | 2003-12-22 | 2007-01-03 | 三得利株式会社 | Gas exchange device and gas exchange method |
| CN102292265A (en) * | 2009-01-28 | 2011-12-21 | 东洋制罐株式会社 | Method for gas replacement of container and apparatus therefor |
| CN102917954A (en) * | 2010-06-07 | 2013-02-06 | 大日本印刷株式会社 | Filling method, filling system and bottle |
| CN206050178U (en) * | 2016-08-31 | 2017-03-29 | 天津森罗科技股份有限公司 | A kind of fast pump nitrogen charging device for historical relic's protection |
-
2017
- 2017-11-30 CN CN201711370771.XA patent/CN108061245A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1157931A1 (en) * | 2000-05-20 | 2001-11-28 | Harcostar Drums Limited | Method and apparatus for gassing of containers |
| CN1890152A (en) * | 2003-12-22 | 2007-01-03 | 三得利株式会社 | Gas exchange device and gas exchange method |
| CN100455485C (en) * | 2003-12-22 | 2009-01-28 | 三得利株式会社 | Gas exchange device and gas exchange method |
| CN102292265A (en) * | 2009-01-28 | 2011-12-21 | 东洋制罐株式会社 | Method for gas replacement of container and apparatus therefor |
| CN102917954A (en) * | 2010-06-07 | 2013-02-06 | 大日本印刷株式会社 | Filling method, filling system and bottle |
| CN206050178U (en) * | 2016-08-31 | 2017-03-29 | 天津森罗科技股份有限公司 | A kind of fast pump nitrogen charging device for historical relic's protection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267423A (en) * | 2021-06-21 | 2021-08-17 | 贵州茅台酒股份有限公司 | Cabin body simulation device and gas introduction and gas detection method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180522 |