CN204300678U - A kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen - Google Patents
A kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen Download PDFInfo
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- CN204300678U CN204300678U CN201420617273.6U CN201420617273U CN204300678U CN 204300678 U CN204300678 U CN 204300678U CN 201420617273 U CN201420617273 U CN 201420617273U CN 204300678 U CN204300678 U CN 204300678U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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Abstract
The utility model is to provide a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen, mainly comprises liquid hydrogen storage tank outer container, liquid hydrogen storage tank inner container, thermal insulation layer, hydrogen extraction blow-down pipe, parahydrogen converter, catalyzer, hydrogen gas automatic blow down valve, as shown in the figure.The technical solution of the utility model is: hydrogen is drawn blow-down pipe one end and is connected with liquid hydrogen storage tank inner container top, one end is connected with hydrogen gas automatic blow down valve, whole liquid hydrogen storage tank inner container and hydrogen are drawn blow-down pipe and are enclosed with thermal insulation layer, are liquid hydrogen storage tank outer container outside thermal insulation layer.The middle and lower part of tank contents device medial axis is provided with parahydrogen converter, and converter is built with parahydrogen reforming catalyst.The utility model can under catalyst action, and tank inside divided parahydrogen liquid conversion to be ortho-hydrogen under corresponding equilibrium concentration, absorbing environmental leaks heat, reduces the evaporation loss of storage of liquid hydrogen.Device movement-less part, without the need to extra power, reliability is high, can apply in ground and space storage of liquid hydrogen, reduces liquid hydrogen user cost.
Description
Technical field:
The utility model belongs to space industry and hydrogen utilization field, this device is a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen, utilize parahydrogen to transform the advantage absorbing cold, reduce liquid hydrogen evaporation loss, greatly extend the speed sensorless vector control storage time of device before emptying.
Background technique:
Liquid hydrogen is one of major storage mode of hydrogen.In storage of liquid hydrogen process, leak thermal evaporation loss unavoidably, and more more outstanding than other cryogenic liquides such as liquid oxygen liquid nitrogen, therefore reduce the important topic that liquid hydrogen evaporation loss is the research of current storing technology.
Hydrogen is diatomic molecule, can be divided into ortho-hydrogen and parahydrogen.Common hydrogen is the mixture of two kinds of form hydrogen molecules, and the hydrogen that under different temperatures, positive parahydrogen concentration reaches stable equilibrium is called equilibrium hydrogen.During more than room temperature temperature, containing ortho-hydrogen 75%, parahydrogen 25%.Under liquid hydrogen saturation temperature 20.4K, the equilibrium concentration of parahydrogen is 99.82%.
When temperature reduces liquefaction of hydrogen, what ortho-hydrogen can be spontaneous is converted to parahydrogen, and releases heat.Otherwise parahydrogen is converted into ortho-hydrogen can absorb heat.But the process of secondary ortho-hydrogen conversion is more slowly, need to adopt catalyzer quickening parahydrogen to be converted into the process of ortho-hydrogen, to make full use of the cold of parahydrogen conversion.
The utility model provides a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen.In low temperature field, general so-called speed sensorless vector control refer to before cryogenic liquid storage tank reaches specified emptying pressure without the emptying storage time.In liquid hydrogen speed sensorless vector control device of the present utility model, part parahydrogen liquid conversion in liquid hydrogen storage tank can be ortho-hydrogen by parahydrogen catalytic converter, need in conversion process to absorb heat, the liquid hydrogen evaporation loss that minimizing is leaked heat and caused, make under same leakage heat condition, the time that liquid hydrogen storage tank internal pressure reaches specified emptying pressure is longer, thus greatly extends the speed sensorless vector control storage time of device before emptying, reaches the object reducing liquid hydrogen evaporation loss.
Summary of the invention:
The utility model is to provide a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen, mainly comprises liquid hydrogen storage tank outer container, liquid hydrogen storage tank inner container, thermal insulation layer, hydrogen extraction blow-down pipe, parahydrogen converter, catalyzer, hydrogen gas automatic blow down valve, as shown in the figure.The technical solution of the utility model is: hydrogen is drawn blow-down pipe one end and is connected with liquid hydrogen storage tank inner container top, one end is connected with hydrogen gas automatic blow down valve, whole liquid hydrogen storage tank inner container and hydrogen are drawn blow-down pipe and are enclosed with thermal insulation layer, are liquid hydrogen storage tank outer container outside thermal insulation layer.The inside of tank contents device is provided with parahydrogen converter, and converter is built with parahydrogen reforming catalyst.
Part parahydrogen liquid conversion in liquid hydrogen storage tank can, under the effect of catalyzer, be the ortho-hydrogen under corresponding equilibrium concentration by this speed sensorless vector control device transformed based on parahydrogen, and absorbing environmental leaks heat, thus reduces the evaporation loss of storage of liquid hydrogen more.This device movement-less part, without the need to extra power, reliability is high, can apply in ground and space storage of liquid hydrogen, has great importance for reduction space industry and hydrogen utilization field liquid hydrogen user cost.
Accompanying drawing illustrates:
Accompanying drawing: the liquid hydrogen speed sensorless vector control device schematic diagram transformed based on parahydrogen
In figure: 1. liquid hydrogen storage tank outer container 2. thermal insulation layer 3. liquid hydrogen storage tank inner container 4. hydrogen draws blow-down pipe 5. parahydrogen converter 6. catalyzer 7. hydrogen gas automatic blow down valve
Embodiment:
The utility model mainly comprises liquid hydrogen storage tank outer container 1, thermal insulation layer 2, liquid hydrogen storage tank inner container 3, hydrogen extraction blow-down pipe 4, parahydrogen converter 5, catalyzer 6, hydrogen gas automatic blow down valve 7.Hydrogen is drawn blow-down pipe 4 one end and is connected with liquid hydrogen storage tank inner container 3 top, and one end is connected with hydrogen gas automatic blow down valve 7, and whole liquid hydrogen storage tank inner container 3 and hydrogen are drawn outside blow-down pipe 4 and is enclosed with thermal insulation layer 2, are liquid hydrogen storage tank outer container 1 outside thermal insulation layer 2; Liquid hydrogen storage tank inner container 3 inside is provided with parahydrogen converter 5, and parahydrogen converter 5 is built with catalyzer 6.
The adiabatic form of described thermal insulation layer 2 is foamed heat insulation, adiabatic, the independent vacuum insulation of powder accumulation, vacuum multi-layer insulation or vacuum-powders insulation.
Described parahydrogen converter 5 is arranged in the middle part of liquid hydrogen storage tank inner container 3 or bottom, and structural type is single tube converter, tubulation converter, disc type converter or pot type converter.
Described catalyzer 6 is that face shaping is Powdered, granular, bulk, strip or spherical containing manganese, chromium, iron, nickel, cobalt, the oxide of dysprosium or hydroxide.
Working principle of the present utility model is as follows:
When liquid hydrogen stores in liquid hydrogen storage tank inner container 3, can constantly evaporate because leaking heat, tank inner pressure rises, and is converted into ortho-hydrogen, absorbs heat, reduce liquid hydrogen evaporation loss under the catalyzer 6 of part parahydrogen in parahydrogen converter 5 is acted on.Compared with transforming with without parahydrogen, the storage time of storage of liquid hydrogen tank when having parahydrogen to transform before reaching specified emptying pressure is longer.
When the pressure in storage of liquid hydrogen tank reaches rated pressure, need hydrogen gas automatic blow down in tank.During emptying, the gas in liquid hydrogen storage tank inner container 3 is drawn blow-down pipe 4 by hydrogen and is discharged in ambient atmosphere through hydrogen gas automatic blow down valve 7.
Parahydrogen converter 5 in the utility model is arranged on the middle and lower part of liquid hydrogen storage tank.Because the liquid hydrogen at storage tank wall place is because leakage hot temperature degree is slightly high, density is little, and transform after liquid hydrogen temperature low, density is large, thus the liquid hydrogen after transforming under the condition having acceleration can sink, and the liquid hydrogen at wall place can rise, therefore the liquid hydrogen in storage tank can form a natural convection circulation, ortho-hydrogen under making the liquid hydrogen in storage tank be converted into corresponding equilibrium concentration as much as possible, without the need to extra circulation power.
Claims (6)
1. the liquid hydrogen speed sensorless vector control device transformed based on parahydrogen, it is characterized in that: hydrogen is drawn blow-down pipe (4) one end and is connected with liquid hydrogen storage tank inner container (3) top, one end is connected with hydrogen gas automatic blow down valve (7), whole liquid hydrogen storage tank inner container (3) and hydrogen are drawn blow-down pipe (4) outside and are enclosed with thermal insulation layer (2), and thermal insulation layer (2) outside is liquid hydrogen storage tank outer container (1); Liquid hydrogen storage tank inner container (3) inside is provided with parahydrogen converter (5), and parahydrogen converter (5) is built with catalyzer (6).
2. a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen according to claim 1, is characterized in that: described thermal insulation layer (2) adiabatic form is foamed heat insulation, adiabatic, the independent vacuum insulation of powder accumulation, vacuum multi-layer insulation or vacuum-powders insulation.
3. a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen according to claim 1, is characterized in that: described parahydrogen converter (5) is arranged on liquid hydrogen storage tank inner container (3) middle part or bottom.
4. a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen according to claim 1, is characterized in that: described parahydrogen converter (5) structural type is single tube converter, tubulation converter, disc type converter or pot type converter.
5. a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen according to claim 1, is characterized in that: described catalyzer (6) be contain manganese, chromium, iron, nickel, cobalt, the oxide of dysprosium or hydroxide.
6. a kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen according to claim 1, is characterized in that: described catalyzer (6) face shaping is Powdered, granular, bulk, strip or spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420617273.6U CN204300678U (en) | 2014-10-24 | 2014-10-24 | A kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen |
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| CN201420617273.6U CN204300678U (en) | 2014-10-24 | 2014-10-24 | A kind of liquid hydrogen speed sensorless vector control device transformed based on parahydrogen |
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| CN204300678U true CN204300678U (en) | 2015-04-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889748A (en) * | 2014-10-24 | 2016-08-24 | 北京航天试验技术研究所 | Liquid hydrogen lossless storage apparatus based on parahydrogen conversion |
| CN110568000A (en) * | 2019-08-29 | 2019-12-13 | 中国科学院武汉物理与数学研究所 | para-hydrogen enrichment device and method for nuclear magnetic resonance para-hydrogen induced polarization |
| CN111992142A (en) * | 2020-08-07 | 2020-11-27 | 北京航天试验技术研究所 | Device for isothermal conversion reaction of para-hydrogen |
-
2014
- 2014-10-24 CN CN201420617273.6U patent/CN204300678U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889748A (en) * | 2014-10-24 | 2016-08-24 | 北京航天试验技术研究所 | Liquid hydrogen lossless storage apparatus based on parahydrogen conversion |
| CN110568000A (en) * | 2019-08-29 | 2019-12-13 | 中国科学院武汉物理与数学研究所 | para-hydrogen enrichment device and method for nuclear magnetic resonance para-hydrogen induced polarization |
| CN111992142A (en) * | 2020-08-07 | 2020-11-27 | 北京航天试验技术研究所 | Device for isothermal conversion reaction of para-hydrogen |
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