CN103196709B - A kind of calibrating gas obtains equipment and the air supply system based on calibrating gas - Google Patents
A kind of calibrating gas obtains equipment and the air supply system based on calibrating gas Download PDFInfo
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- CN103196709B CN103196709B CN201310108324.2A CN201310108324A CN103196709B CN 103196709 B CN103196709 B CN 103196709B CN 201310108324 A CN201310108324 A CN 201310108324A CN 103196709 B CN103196709 B CN 103196709B
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- joint
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- gas cylinder
- calibrating
- calibrating gas
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- 239000012535 impurity Substances 0.000 claims abstract description 24
- 238000011010 flushing procedure Methods 0.000 claims abstract description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010926 purge Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 150
- 238000000034 method Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 241000168254 Siro Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The embodiment of the invention discloses a kind of calibrating gas and obtain equipment, it is characterized in that, comprising: compressed gas cylinder connector, the flushing gas cylinder being loaded with background gas and reduction valve; Wherein, described compressed gas cylinder connector is the three-way pipe comprising the first joint, the second joint and the 3rd joint; Described first joint can be connected with the bottleneck of the compressed gas cylinder being loaded with described calibrating gas, described second joint is connected with the bottleneck of described flushing gas cylinder, described 3rd joint is connected with the valve inlet of described reduction valve, until described background gas by the impurities purging in dead volume to its impurity content lower than desired value time, obtain equipment by this calibrating gas again and obtain described calibrating gas, thus not reducing under described calibrating gas utilization factor and the less prerequisite of described calibrating gas sample size, impurity residual in dead volume effectively can be cleaned.
Description
Technical field
The present invention relates to calibrating gas analysis and quantitative measurement technology field, more particularly, relate to a kind of calibrating gas and obtain equipment and a kind of air supply system based on calibrating gas.
Background technology
For the calibrating gas of splendid attire in compressed gas cylinder, generally reduce pressure for utilization by reduction valve to it, described reduction valve is connected by compressed gas cylinder connector with compressed gas cylinder.Existing compressed gas cylinder connector, its one end is connected to the bottleneck of described compressed gas cylinder, and the other end is connected to the valve inlet of described reduction valve, makes described calibrating gas be circulated to described valve inlet.
Due to described compressed gas cylinder and reduction valve undertaken by described compressed gas cylinder connector in the process be connected with extraneous contact, the hollow pipeline (i.e. dead volume) existed between the bottleneck of the valve export of described reduction valve and described compressed gas cylinder is caused can inevitably to fill a large amount of impurity, as nitrogen, oxygen and the water vapour etc. that comprise in air, the calibrating gas purity that obtains from described valve export is caused to reduce, even with described impurity generation chemical reaction and going bad; Especially there is carry out constituent analysis to described calibrating gas and quantitatively detecting etc. the technical field of high-precision requirement, it more can be caused to analyze and testing result distortion.
For getting rid of the impurity of filling in dead volume, generally at present by the calibrating gas of splendid attire in described compressed gas cylinder, it to be purged, but, for ensureing to purge thoroughly, need to use more calibrating gas to purge for a long time, and reduce the utilization factor of described calibrating gas, and when the sample size of described calibrating gas is less, be then not enough to above-mentioned purging task.
Summary of the invention
In view of this, the invention provides a kind of calibrating gas and obtain equipment and a kind of air supply system based on calibrating gas, do not reducing under described calibrating gas utilization factor and the less prerequisite of described calibrating gas sample size, impurity residual in clean dead volume.
A kind of calibrating gas obtains equipment, comprising: compressed gas cylinder connector, the flushing gas cylinder being loaded with background gas and reduction valve;
Wherein, described compressed gas cylinder connector is the three-way pipe comprising the first joint, the second joint and the 3rd joint; Described first joint can be connected with the bottleneck of the compressed gas cylinder being loaded with described calibrating gas, and described second joint is connected with the bottleneck of described flushing gas cylinder, and described 3rd joint is connected with the valve inlet of described reduction valve.
Alternatively, also comprise:
Be arranged at the valve export place of described reduction valve, for detect flow out described reduction valve background gas in the pick-up unit of impurity content.
Wherein, the port position of described first joint, the second joint and the 3rd joint is all in rounding horn shape.
Wherein, described second joint comprises: connecting pipe and sleeve pipe;
One end of described sleeve pipe is directly connected with the second joint with described first joint, and the other end is provided with the socket that bore is less than described casing inner diameter, and described sleeve pipe is closely connected with the connecting pipe inserting this socket by described socket;
Described connecting pipe be positioned at described sleeve pipe be connected with the first joint formed passage.
Alternatively, also comprise:
Be arranged at the first securing member of the junction of described first joint and described compressed gas cylinder bottleneck, be arranged at the second securing member of the junction of described second joint and described flushing bottle mouth of gas cylinder, be arranged at the 3rd securing member of the junction of the valve inlet of described 3rd joint and described reduction valve.
Wherein, described compressed gas cylinder connector is the compressed gas cylinder connector of stainless steel.
Based on an air supply system for calibrating gas, comprise the compressed gas cylinder that any one calibrating gas above-mentioned obtains equipment and is loaded with described calibrating gas;
The first joint that described calibrating gas obtains the compressed gas cylinder connector of equipment is connected with the bottleneck of described compressed gas cylinder.
As can be seen from above-mentioned technical scheme, the flushing gas cylinder the embodiment of the invention discloses and be a kind ofly provided with compressed gas cylinder connector, being loaded with background gas and the calibrating gas of reduction valve obtain equipment, and described compressed gas cylinder connector is the three-way pipe comprising the first joint, the second joint and the 3rd joint, described first joint can be connected with the bottleneck of the compressed gas cylinder being loaded with described calibrating gas, described second joint is connected with the bottleneck of described flushing gas cylinder, described 3rd joint is connected with the valve inlet of described reduction valve, thus define using described first joint and described 3rd joint as the entrance and exit of described calibrating gas, and using described second joint and described 3rd joint as two articles of distribution channels of the entrance and exit of described background gas, until described background gas by the impurities purging in dead volume to its impurity content lower than desired value time, obtain equipment by this calibrating gas again and obtain described calibrating gas, compared to prior art, the application is not reducing under described calibrating gas utilization factor and the less prerequisite of described calibrating gas sample size, effectively can clean impurity residual in dead volume.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 a kind of calibrating gas disclosed in the embodiment of the present invention obtains device structure schematic diagram;
Fig. 2 is a kind of air supply system structural representation based on calibrating gas disclosed in the embodiment of the present invention;
Fig. 3 is that the embodiment of the present invention another calibrating gas disclosed obtains device structure schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the invention discloses a kind of calibrating gas and obtain equipment, to realize when not reducing described calibrating gas utilization factor and described calibrating gas sample size is less, impurity residual in clean dead volume, comprising: compressed gas cylinder connector 100, the flushing gas cylinder 200 being loaded with background gas and reduction valve 300;
Described compressed gas cylinder connector 100 is the three-way pipe comprising the first joint 101, second joint 102 and the 3rd joint 103; Described first joint 101 can be used for being connected with the bottleneck of the compressed gas cylinder being loaded with described calibrating gas, and described second joint 102 is connected with the bottleneck of described flushing gas cylinder 200, and described 3rd joint 103 is connected with the valve inlet of described reduction valve 300.
Described compressed gas cylinder connector 100 has the first distribution channel formed as the air intake opening of described calibrating gas and gas outlet using described first joint 101 and described 3rd joint 103, and using the second distribution channel that described second joint 102 and described 3rd joint 103 are formed as the air intake opening of described background gas and gas outlet.Described compressed gas cylinder connector 100 in process of production can integral molding, also can described first joint 101, second joint 102 and the 3rd joint 103 as three separating component assembled formations, do not limit to.
Described background gas, also known as Balance Air, is a kind of constituent analysis not affecting described calibrating gas and the high-purity gas carrier gas quantitatively detected.
Described reduction valve 300 is a kind of top hole pressures by regulating action, intake pressure being reduced to needs, and relies on the energy of circulation medium itself, makes the pressure loading valve that top hole pressure keeps stable automatically.
Described calibrating gas obtains equipment and is applied to a kind of air supply system based on described calibrating gas, and see Fig. 2, the described air supply system based on described calibrating gas comprises: described calibrating gas obtains equipment and is loaded with the compressed gas cylinder 400 of described calibrating gas;
Wherein, the first joint 101 of the compressed gas cylinder connector 100 of described calibrating gas acquisition equipment is connected with the bottleneck of described compressed gas cylinder 400.
First, when described calibrating gas acquisition device assembles completes, by described first joint 101 and compressed gas cylinder 400 compact siro spinning technology being loaded with described calibrating gas, open the bottleneck of described flushing gas cylinder 200 and the valve of described reduction valve 300, and regulate its valve opening, make the air intake opening flow of described second distribution channel be greater than gas outlet flow, thus ensure that described background gas can be full of whole dead volume, by clean for the impurities purging of wherein filling;
Described valve opening can regulate according to the valve export place uninterrupted of described reduction valve 300, generally, keeps this uninterrupted within the scope of 100mL/min ~ 300mL/min, but does not limit to.
After described valve export place impurity content is reduced to desired value, the bottleneck of described flushing gas cylinder 200 can be closed, open the bottleneck of described compressed gas cylinder 400 simultaneously, discharge described calibrating gas.Wherein, whether described impurity content is reduced to the judgment criteria of desired value, can determine according to described background gas evacuation time, as rule of thumb known, when the uninterrupted that described background gas discharges described valve export is 200mL/min, impurity cleaning in dead volume can be reduced to desired value to its content by 2 minutes used times, so after 2 minutes, switches to compressed gas cylinder 400 by flushing gas cylinder 200 and is vented; Or, can also for described calibrating gas obtain Equipments Setting be arranged at described reduction valve 300 valve export place, for detect flow out described reduction valve 300 background gas in the pick-up unit (Fig. 1, Fig. 2 are also not shown) of impurity content, described pick-up unit can be hygrometer or oxygen analyzer, corresponding, when moisture being detected in described background gas lower than moisture desired value or oxygen content lower than oxygen desired value, namely changeable described compressed gas cylinder 400 is vented.
Consider in practical application, described first joint 101 is compared to described second joint 102, to grow apart from the distance of described 3rd joint 103, that is, the air intake opening (i.e. described second joint 102) of described second circulation passage is apart from the close together of its gas outlet (i.e. described 3rd joint .103), so described background gas is discharged to described first joint 101 place and purges the consuming time longer of impurity near it through described gas outlet, and can reduce the utilization factor of described background gas.
In view of this, Fig. 3 shows another calibrating gas and obtains equipment, and be applied to the air supply system based on described calibrating gas, described in the present embodiment, the second joint 102 can comprise: connecting pipe 1021 and sleeve pipe 1022;
One end of described sleeve pipe 1022 is directly connected with the second joint 102 with described first joint 102, and the other end is provided with the socket that bore is less than described sleeve pipe 1022 internal diameter, and described sleeve pipe 1022 is closely connected with the connecting pipe 1021 inserting this socket by described socket; Described connecting pipe 1021 be positioned at described sleeve pipe 1022 be connected with the first joint 101 formed passage.
Wherein, described compressed gas cylinder connector 100 in process of production, described sleeve pipe 1022 can with described first joint 102 and the second joint 102 integral molding, then with described connecting pipe 1021 assembly and connection.
So, the background gas entering described second circulation passage from described air intake opening circumvents described gas outlet, first be discharged to described first joint 101 place and carry out impurity cleaning, be then just discharged to described air intake opening place through described gas outlet, and finally discharged by described gas outlet.Namely described background gas is filled to the process of described second joint 102 through described 3rd joint 103, be filled to the process of described first joint 101 through described 3rd joint 103 compared to described background gas, described background gas is less from described 3rd joint 103 effluent air, improve the utilization factor of described background gas, and the process used time purging impurity in described dead volume is less, improves work efficiency.
As preferably, for ensureing that described calibrating gas obtains equipment impermeability in the course of the work, the port position of described first joint 101, second joint 102 and the 3rd joint 103 can be set to rounding horn shape, is convenient to the bottleneck of the described compressed gas cylinder 400 of its corresponding insertion, the flushing bottleneck of gas cylinder 200 and the valve inlet of reduction valve 300 and inserts apart from darker.
In addition, described calibrating gas obtains the first securing member (Fig. 3 is also not shown) that equipment also may be configured with the junction being arranged at described first connector 101 and described compressed gas cylinder 400 bottleneck, be arranged at second securing member (Fig. 3 is also not shown) of the junction of described second connector 102 and described flushing gas cylinder 200 bottleneck, be arranged at the 3rd securing member (Fig. 3 is also not shown) of the junction of the valve inlet of described joint among three members 103 and described reduction valve 300, make described compressed gas cylinder connector 100 and described compressed gas cylinder 400, rinsing gas cylinder 200 is connected tightr with reduction valve 300, ensure the impermeability in dead volume space.
Wherein, the material of described compressed gas cylinder connector 100 can select stainless steel, but does not limit to.
In sum, the flushing gas cylinder the embodiment of the invention discloses and be a kind ofly provided with compressed gas cylinder connector, being loaded with background gas and the calibrating gas of reduction valve obtain equipment, and described compressed gas cylinder connector is the three-way pipe comprising the first joint, the second joint and the 3rd joint, described first joint can be connected with the bottleneck of the compressed gas cylinder being loaded with described calibrating gas, described second joint is connected with the bottleneck of described flushing gas cylinder, described 3rd joint is connected with the valve inlet of described reduction valve, thus define using described first joint and described 3rd joint as the air intake opening of described calibrating gas and gas outlet, and using described second joint and described 3rd joint as two articles of distribution channels of the air intake opening of described background gas and gas outlet, until described background gas by the impurities purging in dead volume to its impurity content lower than desired value time, obtain equipment by this calibrating gas again and obtain described calibrating gas, compared to prior art, the application is not reducing under described calibrating gas utilization factor and the less prerequisite of described calibrating gas sample size, effectively can clean impurity residual in dead volume.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the embodiment of the present invention, can realize in other embodiments.Therefore, the embodiment of the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. calibrating gas obtains an equipment, it is characterized in that, comprising: compressed gas cylinder connector, the flushing gas cylinder being loaded with background gas and reduction valve;
Wherein, described compressed gas cylinder connector is the three-way pipe comprising the first joint, the second joint and the 3rd joint; Described first joint can be connected with the bottleneck of the compressed gas cylinder being loaded with described calibrating gas, and described second joint is connected with the bottleneck of described flushing gas cylinder, and described 3rd joint is connected with the valve inlet of described reduction valve;
Wherein, described first joint is the air intake opening of calibrating gas; Described second joint is the air intake opening of background gas; Described 3rd joint is the gas outlet of background gas and calibrating gas;
Described second joint comprises: connecting pipe and sleeve pipe;
One end of described sleeve pipe is directly connected with the bottleneck of described flushing gas cylinder, and the other end is provided with the socket that bore is less than described casing inner diameter, and described sleeve pipe is closely connected with the connecting pipe inserting this socket by described socket;
Described connecting pipe be positioned at the second joint described in described three-way pipe be connected with the first joint formed passage.
2. equipment according to claim 1, is characterized in that, also comprises:
Be arranged at the valve export place of described reduction valve, for detect flow out described reduction valve background gas in the pick-up unit of impurity content.
3. equipment according to claim 1, is characterized in that, the port position of described first joint, the second joint and the 3rd joint is all in rounding horn shape.
4. equipment according to claim 1, is characterized in that, also comprises:
Be arranged at the first securing member of the junction of described first joint and described compressed gas cylinder bottleneck, be arranged at the second securing member of the junction of described second joint and described flushing bottle mouth of gas cylinder, be arranged at the 3rd securing member of the junction of the valve inlet of described 3rd joint and described reduction valve.
5. equipment according to claim 1, is characterized in that, described compressed gas cylinder connector is the compressed gas cylinder connector of stainless steel.
6. based on an air supply system for calibrating gas, it is characterized in that, the calibrating gas comprised according to any one of claim 1-5 obtains equipment and is loaded with the compressed gas cylinder of described calibrating gas;
The first joint that described calibrating gas obtains the compressed gas cylinder connector of equipment is connected with the bottleneck of described compressed gas cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108324.2A CN103196709B (en) | 2013-03-29 | 2013-03-29 | A kind of calibrating gas obtains equipment and the air supply system based on calibrating gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108324.2A CN103196709B (en) | 2013-03-29 | 2013-03-29 | A kind of calibrating gas obtains equipment and the air supply system based on calibrating gas |
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| CN103196709A CN103196709A (en) | 2013-07-10 |
| CN103196709B true CN103196709B (en) | 2015-11-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105590532B (en) * | 2014-10-23 | 2019-02-15 | 中国石油天然气股份有限公司 | Gas sample actual training device |
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| CN201357057Y (en) * | 2009-02-19 | 2009-12-09 | 上海神开石油化工装备股份有限公司 | Preparing device for multicomponent mixed gas |
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| CN2715834Y (en) * | 2003-12-18 | 2005-08-10 | 中国科学院电子学研究所 | Sample gas distributor |
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