CN1924425A - Method for air exchange in air-tight container - Google Patents
Method for air exchange in air-tight container Download PDFInfo
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- CN1924425A CN1924425A CN 200610053576 CN200610053576A CN1924425A CN 1924425 A CN1924425 A CN 1924425A CN 200610053576 CN200610053576 CN 200610053576 CN 200610053576 A CN200610053576 A CN 200610053576A CN 1924425 A CN1924425 A CN 1924425A
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Abstract
This invention discloses one sealed capacitor gas exchange method, which alternates drawing and charging till work gas purification in sealed container achieves ruled requirement of work process. This invention method can save sealed capacitor gas exchange process time and effectively reduce consumption and improves work efficiency and economic effect.
Description
Technical field
The present invention relates to a kind of degassing method, relate to the method for air exchange in air-tight container specifically.
Background technique
At present, in industries such as metallurgy, heat treatment, chemical industry, usually need in airtight container, carry out processing under the special atmosphere.As in the melting of finding time, often need vacuumize earlier, fill again with inert gas such as argon gas etc.As in a melting operation of certain unit, earlier air is evacuated to 8 * 10 by vacuum pump
-2The vacuum state of Pa charges into inertia working gas (argon gas) then and carry out melting to certain air pressure (as 0.05Mpa).In this pumping process, need the long period and therefore expend much electricity.Moreover, also influence productivity, Utilization ratio and cost of production etc.
Summary of the invention
The method that the purpose of this invention is to provide a kind of low energy consumption, high efficiency air exchange in air-tight container.
The method of air exchange in air-tight container of the present invention is characterized in that adopting bleeding-inflating and hockets, and the working gas purity in making seal container reaches the requirement of technology defined.
The above-mentioned time of bleeding, inflating is random, and only need hocket gets final product.
The method of air exchange in air-tight container of the present invention, the time that can save seal container working gas exchange process, cut down the consumption of energy effectively, increase work efficiency and economic benefit.
Description of drawings
Fig. 1 is the schematic flow sheet of air exchange in air-tight container of the present invention.
Embodiment
The technological process of the inventive method as shown in Figure 1.
Original gaseous state in Fig. 1 (a) expression seal container; Fig. 1 (b) expression is vacuum for the first time, and the density of raw-gas reduces gradually in the container; After Fig. 1 (c) expression is evacuated to a certain degree (is 1Pa as container inner pressure) for the first time, stop to find time; Fig. 1 (d) expression charges into the working gas process for the first time, is mixed gas in the container, and density increases gradually; Fig. 1 (e) expression is filled working gas for the first time, make container inner pressure reach certain value (as 0.01Mpa) after, stop inflation; Fig. 1 (f) expression is pumping process for the second time, and the density of mixed gas reduces gradually in the container; Fig. 1 (g) expression stops to bleed after being evacuated to a certain degree (as container inner pressure to 1Pa) for the second time; Fig. 1 (h) expression charges into the working gas process for the second time, and gas density increases gradually in the container; Fig. 1 (i) expression charges into working gas for the second time, makes after gas reaches authorized pressure (as 0.05Mpa) in the container, stops inflation.
Embodiment
For example, certain unit utilizes the vacuum melting electric furnace of 30kg, requires to carry out under the 0.05Mpa argon atmosphere smelting non-ferrous metal.Its technological process of finding time-inflating is such: with multiple extraction pump (mechanical pump, Roots pump etc.) air in the vacuum furnace is extracted into 8 * 10 earlier
-2The vacuum state of Pa charges into working gas (argon gas) again, till the vacuum furnace internal pressure reaches the desired 0.05MPa of technology, heats melting then.Whole finding time-gas replenishment process need spend about 30 minutes kinds, and the total output of used vacuum pump reaches 12kw, and energy consumption reaches 6 degree commercial power.During melting, air content is about (1.6 * 10 in the container
-4) %.
Adopt this method to carry out finding time for twice-gas replenishment process, its technological process is such:
Carry out earlier finding time-gas replenishment process for the first time: the air in the vacuum furnace is drawn to the 1Pa pressure state, charges into working gas (argon gas) again and reach 0.01MPa until container inner pressure;
Then, carry out finding time the second time-gas replenishment process: mixed gas in the vacuum furnace is extracted out, reached 1Pa, charge into working gas (argon gas) again, until the desired 0.05Mpa working pressure of technology until pressure.
Find time-5 fens kinds of the about needs of gas replenishment process total for such twice; Only use the vacuum pump of a 5kw; Energy consumption only reaches 0.4 degree industrial electro; During melting, air content is about (2.0 * 10 in the container
-7) %.
This shows, adopt the present invention after, process time only needs about 5 minutes kinds (only account for original 16.7%); Energy consumption 0.4 degree accounts for original 6.7%; And air content has only (2.0 * 10 in the seal container
-7) %, to compare with original technology, air content also will hang down three orders of magnitude in the seal container.Improved the purity of working gas greatly, and only needed a vacuum pump, brief equipment.
Claims (2)
1. the method for air exchange in air-tight container, it is characterized in that adopting bleeds-inflate hockets, and the working gas purity in making seal container reaches the requirement of technology defined.
2. the method for air exchange in air-tight container according to claim 1 is characterized in that said seal container is the vacuum melting electric furnace, earlier the air pressure in the vacuum furnace is evacuated to 1Pa, charges into argon gas to container inner pressure to 0.01MPa; Then mixture pressure in the vacuum furnace is evacuated to 1Pa, charges into argon gas again, the argon gas in the vacuum melting electric furnace reaches desired 0.05Mpa working pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610053576 CN1924425A (en) | 2006-09-25 | 2006-09-25 | Method for air exchange in air-tight container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610053576 CN1924425A (en) | 2006-09-25 | 2006-09-25 | Method for air exchange in air-tight container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1924425A true CN1924425A (en) | 2007-03-07 |
Family
ID=37817167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610053576 Pending CN1924425A (en) | 2006-09-25 | 2006-09-25 | Method for air exchange in air-tight container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1924425A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230567A (en) * | 2011-04-28 | 2011-11-02 | 长沙汇一制药机械有限公司 | Filling method and device for soft bag large-transfusion protective gas |
| CN106439481A (en) * | 2016-08-25 | 2017-02-22 | 杭州艾尔柯制冷剂科技有限公司 | Charging technology for refrigerant gas cylinders less than 1 liter |
| CN107904548A (en) * | 2017-10-25 | 2018-04-13 | 镇江市丹徒区开源制刷厂 | A kind of method of turning blue of the anticorrosive reinforced film of spring steel surface oxidation-resistant |
-
2006
- 2006-09-25 CN CN 200610053576 patent/CN1924425A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230567A (en) * | 2011-04-28 | 2011-11-02 | 长沙汇一制药机械有限公司 | Filling method and device for soft bag large-transfusion protective gas |
| CN106439481A (en) * | 2016-08-25 | 2017-02-22 | 杭州艾尔柯制冷剂科技有限公司 | Charging technology for refrigerant gas cylinders less than 1 liter |
| CN107904548A (en) * | 2017-10-25 | 2018-04-13 | 镇江市丹徒区开源制刷厂 | A kind of method of turning blue of the anticorrosive reinforced film of spring steel surface oxidation-resistant |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |