CN105757447A - Method for reducing water content of gas in welding gas cylinder - Google Patents
Method for reducing water content of gas in welding gas cylinder Download PDFInfo
- Publication number
- CN105757447A CN105757447A CN201610126446.8A CN201610126446A CN105757447A CN 105757447 A CN105757447 A CN 105757447A CN 201610126446 A CN201610126446 A CN 201610126446A CN 105757447 A CN105757447 A CN 105757447A
- Authority
- CN
- China
- Prior art keywords
- gas cylinder
- gas
- moisture content
- water content
- welding
- 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
Links
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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- 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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/056—Small (<1 m3)
-
- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/221—Welding
-
- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/014—Nitrogen
-
- 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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- 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
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a method for reducing the water content of gas in a welding gas cylinder. The method includes the steps of: a. firstly filling the welding gas cylinder with 0.5MPa-1.5MPa common nitrogen, and then emptying the gas cylinder; b. performing vacuum pumping on the gas cylinder to ensure a vacuum degree of less than 1Pa, and then conducting standing for a certain period of time; and c. after standing for certain period of time, if the vacuum degree is maintained below 1Pa, filling the cylinder with 0.07MPa-0.12MPa high purity nitrogen to ensure the spatial water content in the welding gas cylinder, and if the vacuum degree is not maintained below 1Pa, repeating the step a. By means of the method for reducing the water content of gas in the welding gas cylinder, the water content in the gas cylinder can be reduced, the spatial water content in the cylinder is maintained well, the working efficiency is high and the cost is low.
Description
Technical field
The present invention relates to welded gas cylinder field, particularly relate to a kind of reduce the method for gas moisture content in welded gas cylinder.
Background technology
After welded gas cylinder completes to make, needing to reduce gas cylinder the moisture content of gas cylinder internal gas, existing method is typically by repeatedly replacing gas cylinder internal with High Purity Nitrogen.It is high that High Purity Nitrogen replaces cost often；Due to dead angles such as the gaps that the welding liner plate in gas cylinder is formed.Steam therein is not easy out typically to can only achieve 100PPM.Time cycle is long, and efficiency is low.
Summary of the invention
The technical problem that present invention mainly solves is to provide and a kind of reduces the method for gas moisture content in welded gas cylinder, it is possible to reducing the moisture content of gas cylinder internal, in bottle, space moisture content keeps, and operating efficiency high cost is low.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provides a kind of and reduces the method for gas moisture content in welded gas cylinder, comprises the following steps: a. is first filled with 0.5Mpa-1.5 to welding gas cylinder internal
The ordinary nitrogen of Mpa, is then vented gas cylinder internal；B. gas cylinder is vacuumized, it is ensured that vacuum, at below 1Pa, then stands certain time；If vacuum maintains below 1Pa after c. standing certain time, then it is filled with the high-purity nitrogen of 0.07 Mpa-0.12 Mpa, guarantee space moisture content in welded gas cylinder, if below 1Pa can not be maintained if left standing for vacuum after certain time, repeat step a.
In a preferred embodiment of the present invention, described step a is filled with the ordinary nitrogen of 1Mpa.
In a preferred embodiment of the present invention, described step c is filled with 0.1
The high-purity nitrogen of Mpa is.
The invention has the beneficial effects as follows: the present invention reduces the method for gas moisture content in welded gas cylinder, it is possible to reducing the moisture content of gas cylinder internal, in bottle, space moisture content keeps, and operating efficiency high cost is low.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1, a kind of reduces the method for gas moisture content in welded gas cylinder, comprises the following steps: a. is first filled with the ordinary nitrogen of 0.5MpaMpa to welding gas cylinder internal, is then vented gas cylinder internal；B. gas cylinder is vacuumized, it is ensured that vacuum, at below 1Pa, then stands certain time；If vacuum maintains below 1Pa after c. standing certain time, then it is filled with the high-purity nitrogen of 0.07 Mpa, it is ensured that space moisture content in welded gas cylinder, if below 1Pa can not be maintained if left standing for vacuum after certain time, repeats step a.
Embodiment 2, a kind of reduces the method for gas moisture content in welded gas cylinder, comprises the following steps: a. is first filled with the ordinary nitrogen of 1.5 Mpa to welding gas cylinder internal, is then vented gas cylinder internal；B. gas cylinder is vacuumized, it is ensured that vacuum, at below 1Pa, then stands certain time；If vacuum maintains below 1Pa after c. standing certain time, then it is filled with the high-purity nitrogen of 0.12 Mpa, it is ensured that space moisture content in welded gas cylinder, if below 1Pa can not be maintained if left standing for vacuum after certain time, repeats step a.
Embodiment 3, a kind of reduces the method for gas moisture content in welded gas cylinder, comprises the following steps: a. is first filled with the ordinary nitrogen of 1Mpa to welding gas cylinder internal, is then vented gas cylinder internal；B. gas cylinder is vacuumized, it is ensured that vacuum, at below 1Pa, then stands certain time；If vacuum maintains below 1Pa after c. standing certain time, then it is filled with the high-purity nitrogen of 0.1 Mpa, it is ensured that space moisture content in welded gas cylinder, if below 1Pa can not be maintained if left standing for vacuum after certain time, repeats step a.
The method water cut limit that the present invention reduces gas moisture content in welded gas cylinder is low up to 5PPM, and in bottle, space moisture content keeps, and operating efficiency is high, and low cost is safe and reliable, easy to use.
Being different from prior art, the present invention reduces the method for gas moisture content in welded gas cylinder, it is possible to reducing the moisture content of gas cylinder internal, in bottle, space moisture content keeps, and operating efficiency high cost is low.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (3)
1. one kind is reduced the method for gas moisture content in welded gas cylinder, it is characterised in that comprise the following steps:
The most first welding gas cylinder internal is filled with the ordinary nitrogen of 0.5Mpa-1.5 Mpa, then gas cylinder internal is vented；
B. gas cylinder is vacuumized, it is ensured that vacuum, at below 1Pa, then stands certain time；
If vacuum maintains below 1Pa after c. standing certain time, then it is filled with the high-purity nitrogen of 0.07 Mpa-0.12 Mpa, guarantee space moisture content in welded gas cylinder, if below 1Pa can not be maintained if left standing for vacuum after certain time, repeat step a.
The method of gas moisture content in reduction welded gas cylinder the most according to claim 1, it is characterised in that be filled with the ordinary nitrogen of 1Mpa in described step a.
The method of gas moisture content in reduction welded gas cylinder the most according to claim 1, it is characterised in that the high-purity nitrogen being filled with 0.1 Mpa in described step c is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126446.8A CN105757447A (en) | 2016-03-07 | 2016-03-07 | Method for reducing water content of gas in welding gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126446.8A CN105757447A (en) | 2016-03-07 | 2016-03-07 | Method for reducing water content of gas in welding gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105757447A true CN105757447A (en) | 2016-07-13 |
Family
ID=56331727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610126446.8A Pending CN105757447A (en) | 2016-03-07 | 2016-03-07 | Method for reducing water content of gas in welding gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105757447A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226149A (en) * | 2016-08-02 | 2016-12-14 | 上海神开气体技术有限公司 | A kind of preparation method of nitrogenous mixed active calibrating gas |
| CN114838562A (en) * | 2022-05-11 | 2022-08-02 | 常州蓝翼飞机装备制造有限公司 | Method for removing gas micro-water in welded gas cylinder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203131419U (en) * | 2013-01-22 | 2013-08-14 | 浙江金盾压力容器有限公司 | Portable nitrogen replacement device |
| US20130228072A1 (en) * | 2011-08-22 | 2013-09-05 | Air Products And Chemicals, Inc. | Method and apparatus for the supply of dry gases |
| CN203927382U (en) * | 2014-04-21 | 2014-11-05 | 北京和华腾真空泵压缩机有限公司 | Horizontal interior heating pumped vacuum systems |
| CN204829277U (en) * | 2015-06-29 | 2015-12-02 | 杨高峰 | Fire control gas cylinder fills dress trace moisture controlling means |
-
2016
- 2016-03-07 CN CN201610126446.8A patent/CN105757447A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130228072A1 (en) * | 2011-08-22 | 2013-09-05 | Air Products And Chemicals, Inc. | Method and apparatus for the supply of dry gases |
| CN203131419U (en) * | 2013-01-22 | 2013-08-14 | 浙江金盾压力容器有限公司 | Portable nitrogen replacement device |
| CN203927382U (en) * | 2014-04-21 | 2014-11-05 | 北京和华腾真空泵压缩机有限公司 | Horizontal interior heating pumped vacuum systems |
| CN204829277U (en) * | 2015-06-29 | 2015-12-02 | 杨高峰 | Fire control gas cylinder fills dress trace moisture controlling means |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226149A (en) * | 2016-08-02 | 2016-12-14 | 上海神开气体技术有限公司 | A kind of preparation method of nitrogenous mixed active calibrating gas |
| CN114838562A (en) * | 2022-05-11 | 2022-08-02 | 常州蓝翼飞机装备制造有限公司 | Method for removing gas micro-water in welded gas cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105757447A (en) | Method for reducing water content of gas in welding gas cylinder | |
| CN204729657U (en) | A kind of tie-rod sealing formula vacuumizes shutoff frock | |
| CN204242752U (en) | For the air chamber that converter transformer vacuumizes | |
| CN102294533A (en) | titanium and titanium alloy welding process | |
| CN204957066U (en) | Tertiary vacuum pump package of vacuum capper | |
| CN203287186U (en) | Valve pressurizing test apparatus | |
| CN103851332A (en) | Gas replacement technology of liquefied natural gas (LNG) cylinder | |
| CN204403781U (en) | A kind of station uses the drainage device of gas storage bottle type container group | |
| CN114838562A (en) | Method for removing gas micro-water in welded gas cylinder | |
| CN204253517U (en) | One easily overhauls hydraulic station | |
| CN220770803U (en) | Quick vacuum pumping system of helium filling process steel bottle | |
| CN205839180U (en) | Polygon filter vat | |
| TW201614059A (en) | Flower essential oil extraction method | |
| CN204420387U (en) | A kind of flange-type hydraulic connectors | |
| CN205135732U (en) | Lateral part volute admission formula low pressure inner casing for steam turbine | |
| CN205221598U (en) | Quick evacuator of large container | |
| CN204035784U (en) | A kind of cup welding agent for exothermic weld | |
| CN104647547A (en) | Digester for immersion of log | |
| CN204005229U (en) | A kind of argon gas reclaims and fills bottle apparatus | |
| CN204386539U (en) | A kind of viscous crude hot Bian well head gas injection blowout hookup | |
| CN204125143U (en) | A kind of filling hydraulic compressor for the packing of organosilicon sealant drum | |
| CN203431481U (en) | High-purity gas confluence filling line | |
| CN203433945U (en) | Transformer oil tank | |
| CN202487524U (en) | Suction and charge bench used inside inert gas climate box | |
| CN202732722U (en) | Box body bearing cap improved structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |