CN104275767A - Supercritical fluid conveying device - Google Patents
Supercritical fluid conveying device Download PDFInfo
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- CN104275767A CN104275767A CN201310294950.5A CN201310294950A CN104275767A CN 104275767 A CN104275767 A CN 104275767A CN 201310294950 A CN201310294950 A CN 201310294950A CN 104275767 A CN104275767 A CN 104275767A
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Abstract
The invention discloses a supercritical fluid conveying device which comprises a gas source control device, a pressurization control device, a storage device and an electric control device. The gas source control device mainly comprises a gas source, a gas inlet pressure meter and a gas inlet on-off electromagnetic valve. The pressurization control device mainly comprises a low-noise air compressor, a filtering-pressure reduction-gas source triple piece, an air pressure meter, an on-off electromagnetic valve, a pressurization pump, a high-pressure pressure meter and a check valve. The storage device mainly comprises a high-pressure gas storage tank, a pressure sensor, an overpressure overflow electromagnetic valve and a check valve; the electric control device realizes the control over the whole system mainly by means of an integrated control panel. The supercritical fluid conveying device has the advantage that a supercritical fluid can be stably conveyed and controlled and the working efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of fluid delivery system, be specifically related to a kind of conveying device of supercritical fluid, have in the system of strict demand gas inject pressure, flow etc. for the overcritical microporous foam of polymer etc.
Background technology
As everyone knows, material is at Near The Critical Point, and phenomenon jumpy occurs the physical property that there will be all fluids such as density, viscosity, solubility, thermal capacity, dielectric constant.When the temperature residing for material is higher than critical-temperature, when pressure is greater than critical pressure, this material is in supercriticality.Supercritical fluid is in more than critical-temperature and critical pressure, the fluid between gas and liquid, has double properties and the advantage of gas liquid concurrently: dissolubility is strong, diffusion good and be easy to control.At Near The Critical Point, the minor variations of pressure and temperature, can cause the change that fluid density is very large, thus makes solubility that larger change occur.
Supercritical fluid because of the performance applications of its uniqueness extensive, as supercritical fluid extraction, supercritical Water Oxidation Technology, supercritical fluid drying, supercritical fluid dyeing, supercritical fluid prepare microcellular foam material etc.Utilize supercritical fluid to prepare microcellular foam material and fluid and plastic melt are formed homogeneous system by mechanical agitation under high-temperature and high-pressure conditions, then fast pressure relief in fact exactly, gas is separated out and is formed micropore from melt, obtained poromerics.Research shows, the injection parameter of supercritical fluid has a great impact expanded material, and at present, the development of deficiency to microcellular foam material of supercritical fluid injection device causes bottleneck.Therefore, research and develop a kind of constant pressure and constant flow injected system that can realize supercritical fluid to be necessary.
Number of patent application be 201110159337.3 Chinese invention patent application " a kind of constant pressure and constant flow injection device of micrometeor high pressure liquefied gas " (application publication number is CN102310515A) disclose a kind of constant pressure and constant flow injection device of micrometeor high pressure liquefied gas, comprise gas boosting liquefaction portion, gas output, pressure flow hybrid control part and pressure flow feedback fraction, this invention injection device adopts linear reciprocating mechanism to carry out gas continuous output controlling, but because system pipeline is too tediously long, make control hysteresis, output end pressure is caused to fluctuate, the stable conveying of gas cannot be realized, directly have influence on subsequent experimental technique.
Number of patent application be 201110253685.7 Chinese invention patent application " a kind of injection apparatus for supercritical fluid " (application publication number is CN102310516A) disclose a kind of injection apparatus for supercritical fluid, precompressed part is cooled by gas, supercritical fluid forming section, and pressure and temp flow feedback part and control section form, but because this injection device adopts multiple booster pump, complex structural designs, noise is comparatively large, should not be applied in industrialized production practices.
Summary of the invention
Technical problem to be solved by this invention is the conveying device providing a kind of stable conveying of supercritical fluid for the above-mentioned state of the art and accurately control, simple to operate, significantly can heighten operating efficiency.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of supercritical fluid delivery device, it is characterized in that: comprise control air source equipment, comprise source of the gas, boost gauge and air inlet power on/off magnet valve, described boost gauge is between source of the gas and air inlet power on/off magnet valve;
Pressure elation Control Unit, comprise the low-noise air compressor, filtration decompression source of the gas three linked piece, air manometer, power on/off magnet valve, booster pump, high-pressure manometer and the first check-valves that connect successively, meanwhile, described booster pump is connected with the air inlet power on/off magnet valve in aforementioned control air source equipment;
Storage device, comprise high pressure gas storage tank, the first pressure display unit, superpressure spilling magnetic valve and the second check-valves, the junction that described high pressure gas storage tank is positioned at the first pressure display unit, superpressure overflows magnetic valve and the second check-valves three, described superpressure overflows the first check-valves be connected with between magnetic valve and high pressure gas storage tank in aforementioned Pressure elation Control Unit, described second check-valves be injected into device and be connected;
Electric control gear, comprises integrated control panel.
As improvement, be provided with gas transmission power on/off magnet valve between the high pressure gas storage tank of described storage device and the second check-valves, meanwhile, described superpressure is overflowed magnetic valve and is connected with the first gas recycling can.
As improvement, described in be injected into device and be connected with vent valve with the second pressure display unit simultaneously, aforementioned second check-valves is at the second pressure display unit and be injected between device, and described vent valve is connected with flowmeter and the second gas recycling can successively.
Preferably, described integrated control panel comprises battery main switch, Pressure gauge, Pressure gauge gauge tap, first pressure display unit, second pressure display unit, first temperature indicator, second temperature indicator, first supervisory keyboard and the second supervisory keyboard composition, wherein the first pressure control switch controls boost gauge, second pressure control switch controls air manometer, 3rd pressure control switch controls high-pressure manometer, first supervisory keyboard controls the first pressure display unit and the second pressure display unit, and the second supervisory keyboard controls the first temperature indicator and the second temperature indicator.
Preferably, described high pressure gas storage tank is connected with the first temperature indicator, and is injected into device and is connected with the second temperature indicator.
Preferably, described source of the gas is the blended gas of carbon dioxide or nitrogen or carbon dioxide and nitrogen arbitrary proportion.
Preferably, the pressure limit of described low-noise air compressor is 0 ~ 5MPa.
Preferably, the pressure limit of described booster pump is 0 ~ 40MPa.
Preferably, the pressure limit of described high pressure gas storage tank is 0 ~ 100MPa.
As improvement, described high pressure gas storage tank is jacket type tubulose, and external heater block.
Compared with prior art, the invention has the advantages that: realize by electronics integrated panel the Automated condtrol that supercritical fluid stablizes output, can realize to the stable conveying of supercritical fluid with accurately control, simple to operate, can significantly increase work efficiency.
Accompanying drawing explanation
Fig. 1 is supercritical fluid delivery apparatus structure schematic diagram.
Fig. 2 is the structural representation of integrated control panel.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Fig. 1 and Fig. 2 is the present embodiment supercritical fluid delivery device, comprises control air source equipment, Pressure elation Control Unit, storage device and electric control gear.Control air source equipment is made up of source of the gas 6, boost gauge 7 and air inlet power on/off magnet valve 8, and wherein boost gauge 7 is between source of the gas 6 and air inlet power on/off magnet valve 8, and source of the gas 6 is the blended gas of carbon dioxide or nitrogen or carbon dioxide and nitrogen arbitrary proportion.Pressure elation Control Unit is connected to form successively by low-noise air compressor 1, filtration decompression source of the gas three linked piece 2, air manometer 3, power on/off magnet valve 4, booster pump 5, high-pressure manometer 9 and the first check-valves 10, meanwhile, booster pump 5 is connected with the air inlet power on/off magnet valve 8 in control air source equipment.Storage device overflows magnetic valve 12 by high pressure gas storage tank 11, first pressure display unit 14, superpressure and the second check-valves 17 forms, the junction that high pressure gas storage tank 11 is positioned at the first pressure display unit 14, superpressure overflows magnetic valve 12 and the second check-valves 17 three, superpressure is overflowed and to be connected with the first check-valves 10, second check-valves 17 in Pressure elation Control Unit between magnetic valve 12 and high pressure gas storage tank 11 and to be injected into device 18 and to be connected.Electric control gear, comprises integrated control panel 30.
Be provided with gas transmission power on/off magnet valve 15 between the high pressure gas storage tank 11 of storage device and the second check-valves 17, meanwhile, superpressure is overflowed magnetic valve 12 and is connected with the first gas recycling can 13.Be injected into device 18 to be connected with vent valve 19 with the second pressure display unit 16, the second check-valves 17 is at the second pressure display unit 16 and be injected between device 18, and vent valve 19 is connected with flowmeter 20 and the second gas recycling can 21 successively simultaneously.
Integrated control panel 30 comprises battery main switch 24, Pressure gauge, Pressure gauge gauge tap, first pressure display unit 14, second pressure display unit 16, first temperature indicator 22, second temperature indicator 23, first supervisory keyboard 28 and the second supervisory keyboard 29 form, wherein the first pressure control switch 25 controls boost gauge 7, second pressure control switch 26 controls air manometer 3, 3rd pressure control switch 27 controls high-pressure manometer 9, first supervisory keyboard 28 controls the first pressure display unit 14 and the second pressure display unit 16, and the second supervisory keyboard 29 controls the first temperature indicator 22 and the second temperature indicator 23.High pressure gas storage tank 11 is connected with the first temperature indicator 22, and is injected into device 18 and is connected with the second temperature indicator 23.
The pressure limit of low-noise air compressor 1 is 0 ~ 5MPa, and the pressure limit of booster pump 5 is 0 ~ 40MPa, and the pressure limit of high pressure gas storage tank 11 is 0 ~ 100MPa.High pressure gas storage tank 11 is jacket type tubulose, and external heater block.
During concrete use the present embodiment supercritical fluid delivery device, first control panel 30 battery main switch 24 is opened, press the first Pressure gauge gauge tap 25, gas is allowed to enter into booster pump 5 by air inlet power on/off magnet valve 8, admission pressure can be observed by boost gauge 7, then the second Pressure gauge gauge tap 26 is pressed, low-noise air compressor 1 is started working, booster pump 5 is driven to work, after pressure reaches certain value, open the 3rd Pressure gauge gauge tap 27, injecting gas in high pressure gas storage tank 11; Set the pressure 14 of high pressure gas storage tank 11 according to different demand by the first supervisory keyboard 28, set the temperature of high pressure gas storage tank 11 according to different demand by the second supervisory keyboard 28; After gas reaches the value of setting, power on/off magnet valve 4 and air inlet power on/off magnet valve 8 will be closed automatically, booster pump 5 quits work, simultaneously check-valves 10 adverse current that can prevent gas pressure difference from causing, superpressure overflows magnetic valve 12 can according to the size automatic switch of pressure in high pressure gas storage tank 11, by unnecessary gas distribution in the first gas recycling can 13, realize the accurate control of pressure in high pressure gas storage tank 11.
When needs are to when being injected into device 18 injecting gas, gas transmission power on/off magnet valve 15 starts to open, the pressure and temperature being injected into device 18 can be set by the first supervisory keyboard 28 and the second supervisory keyboard 29, after gas reaches setting requirement, gas transmission power on/off magnet valve 15 is closed automatically, the adverse current that check-valves can prevent gas pressure difference from causing.
Until after having reacted, opened vent valve 19 fast, unload foam, decompression rate can be measured by flowmeter 20, and collecting finally by the second gas recycling can 21 of spilling, can recycle.
The supercritical fluid delivery device of the present embodiment realizes by electronics integrated panel the Automated condtrol that supercritical fluid stablizes output, can realize to the stable conveying of supercritical fluid with accurately control, simple to operate, can significantly increase work efficiency.
Claims (10)
1. a supercritical fluid delivery device, is characterized in that: comprise
Control air source equipment, comprise source of the gas (6), boost gauge (7) and air inlet power on/off magnet valve (8), described boost gauge (7) is positioned between source of the gas (6) and air inlet power on/off magnet valve (8);
Pressure elation Control Unit, comprise connect successively low-noise air compressor (1), filter decompression source of the gas three linked piece (2), air manometer (3), power on/off magnet valve (4), booster pump (5), high-pressure manometer (9) and the first check-valves (10), meanwhile, described booster pump (5) is connected with the air inlet power on/off magnet valve (8) in aforementioned control air source equipment;
Storage device, comprise high pressure gas storage tank (11), first pressure display unit (14), superpressure overflows magnetic valve (12) and the second check-valves (17), described high pressure gas storage tank (11) is positioned at the first pressure display unit (14), superpressure overflows the junction of magnetic valve (12) and the second check-valves (17) three, the first check-valves (10) in aforementioned Pressure elation Control Unit is connected with between described superpressure spilling magnetic valve (12) and high pressure gas storage tank (11), described second check-valves (17) be injected into device (18) and be connected,
Electric control gear, comprises integrated control panel (30).
2. supercritical fluid delivery device according to claim 1, it is characterized in that: between the high pressure gas storage tank (11) of described storage device and the second check-valves (17), be provided with gas transmission power on/off magnet valve (15), meanwhile, described superpressure spilling magnetic valve (12) is connected with the first gas recycling can (13).
3. supercritical fluid delivery device according to claim 1, it is characterized in that: described in be injected into device (18) and be connected with vent valve (19) with the second pressure display unit (16) simultaneously, aforementioned second check-valves (17) is positioned at the second pressure display unit (16) and is injected between device (18), and described vent valve (19) is connected with flowmeter (20) and the second gas recycling can (21) successively.
4. supercritical fluid delivery device according to claim 1, it is characterized in that: described integrated control panel (30) comprises battery main switch (24), Pressure gauge, Pressure gauge gauge tap, first pressure display unit (14), second pressure display unit (16), first temperature indicator (22), second temperature indicator (23), first supervisory keyboard (28) and the second supervisory keyboard (29) composition, wherein the first pressure control switch (25) controls boost gauge (7), second pressure control switch (26) controls air manometer (3), 3rd pressure control switch (27) controls high-pressure manometer (9), first supervisory keyboard (28) controls the first pressure display unit (14) and the second pressure display unit (16), and the second supervisory keyboard (29) controls the first temperature indicator (22) and the second temperature indicator (23).
5. supercritical fluid delivery device according to claim 1, it is characterized in that: described high pressure gas storage tank (11) is connected with the first temperature indicator (22), and be injected into device (18) and be connected with the second temperature indicator (23).
6. supercritical fluid delivery device according to claim 1, is characterized in that: the blended gas that described source of the gas (6) is carbon dioxide or nitrogen or carbon dioxide and nitrogen arbitrary proportion.
7. supercritical fluid delivery device according to claim 1, is characterized in that: the pressure limit of described low-noise air compressor (1) is 0 ~ 5MPa.
8. supercritical fluid delivery device according to claim 1, is characterized in that: the pressure limit of described booster pump (5) is 0 ~ 40MPa.
9. supercritical fluid delivery device according to claim 1, is characterized in that: the pressure limit of described high pressure gas storage tank (11) is 0 ~ 100MPa.
10. supercritical fluid delivery device according to claim 1, is characterized in that: described high pressure gas storage tank (11) is jacket type tubulose, and external heater block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310294950.5A CN104275767A (en) | 2013-07-12 | 2013-07-12 | Supercritical fluid conveying device |
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| CN201310294950.5A CN104275767A (en) | 2013-07-12 | 2013-07-12 | Supercritical fluid conveying device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754131A (en) * | 2016-02-04 | 2016-07-13 | 青岛科技大学 | Polymer supercritical gas foaming production line |
| CN106426718A (en) * | 2016-11-30 | 2017-02-22 | 合肥亿福自动化科技有限公司 | Supercharged stable conveying system for carbon dioxide |
| CN107543870A (en) * | 2016-06-29 | 2018-01-05 | 江苏汉邦科技有限公司 | Semi-preparative supercritical fluid chromatograph |
| CN109899027A (en) * | 2019-04-08 | 2019-06-18 | 贵州盘江精煤股份有限公司 | A kind of gas drilling level pressure grout injection control device |
| CN111939842A (en) * | 2020-09-05 | 2020-11-17 | 西南石油大学 | Control high temperature high pressure batch autoclave air-breather |
| CN115847701A (en) * | 2022-12-08 | 2023-03-28 | 东莞海瑞斯新材料科技有限公司 | Supercritical foaming mixing device and method for nitrogen mixed gas |
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| JP2007055121A (en) * | 2005-08-25 | 2007-03-08 | Ube Machinery Corporation Ltd | Multi-layer molding method of thermoplastic resin and multi-layer molding apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754131A (en) * | 2016-02-04 | 2016-07-13 | 青岛科技大学 | Polymer supercritical gas foaming production line |
| CN107543870A (en) * | 2016-06-29 | 2018-01-05 | 江苏汉邦科技有限公司 | Semi-preparative supercritical fluid chromatograph |
| CN106426718A (en) * | 2016-11-30 | 2017-02-22 | 合肥亿福自动化科技有限公司 | Supercharged stable conveying system for carbon dioxide |
| CN109899027A (en) * | 2019-04-08 | 2019-06-18 | 贵州盘江精煤股份有限公司 | A kind of gas drilling level pressure grout injection control device |
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| CN111939842A (en) * | 2020-09-05 | 2020-11-17 | 西南石油大学 | Control high temperature high pressure batch autoclave air-breather |
| CN115847701A (en) * | 2022-12-08 | 2023-03-28 | 东莞海瑞斯新材料科技有限公司 | Supercritical foaming mixing device and method for nitrogen mixed gas |
| CN115847701B (en) * | 2022-12-08 | 2023-08-15 | 东莞海瑞斯新材料科技有限公司 | Supercritical foaming mixing device and method for nitrogen mixed gas |
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Application publication date: 20150114 |