CN220099210U - Hydrogen production system capable of stopping and maintaining pressure - Google Patents
Hydrogen production system capable of stopping and maintaining pressure Download PDFInfo
- Publication number
- CN220099210U CN220099210U CN202321551904.4U CN202321551904U CN220099210U CN 220099210 U CN220099210 U CN 220099210U CN 202321551904 U CN202321551904 U CN 202321551904U CN 220099210 U CN220099210 U CN 220099210U
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- Prior art keywords
- hydrogen
- oxygen
- communicated
- unit
- way valve
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 121
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 121
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 239000001301 oxygen Substances 0.000 claims abstract description 87
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 87
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 69
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000010926 purge Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 150000002431 hydrogen Chemical class 0.000 claims description 20
- 238000005868 electrolysis reaction Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 abstract description 7
- 238000005070 sampling Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses a hydrogen production system capable of stopping and maintaining pressure, which comprises a hydrogen production unit, a nitrogen purging unit, an oxygen treatment unit, a hydrogen treatment unit and a purity detection unit, wherein two ends of an electrolytic tank of the hydrogen production unit are respectively communicated with the oxygen treatment unit and the hydrogen treatment unit, the oxygen treatment unit is communicated with an in-oxygen hydrogen on-line analyzer of the purity detection unit through a first one-way valve, the hydrogen treatment unit is communicated with the in-hydrogen oxygen on-line analyzer of the purity detection unit through a second one-way valve, the nitrogen purging unit is communicated with the oxygen treatment unit through a third one-way valve, and the nitrogen purging unit is communicated with the hydrogen treatment unit through a fourth one-way valve. The hydrogen production system with the structure, which can stop and maintain pressure, adopts the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve to replace the electromagnetic valve, changes the electric signal control into the mechanical automatic control under the gas pressure, reduces the complexity of the hydrogen production system and has low comprehensive cost.
Description
Technical Field
The utility model relates to the technical field of hydrogen production systems, in particular to a hydrogen production system capable of stopping and maintaining pressure.
Background
Along with the proposal of the national double-carbon target, the research of various industries on the water electrolysis hydrogen production technology is continuously increased, and the water electrolysis through direct current to produce green hydrogen plays a great role in national energy conservation and emission reduction and energy structure improvement. Meanwhile, in recent years, breakthrough is achieved in various technical links in the hydrogen production by water electrolysis, but the following problems exist in the aspects of oxyhydrogen gas sampling detection and dry dew point detection systems: each gas detection system adopts an electromagnetic valve to control respectively, but the control logic design is complex; the electromagnetic valve increases the risk of generating fault points of the system, and once the electric signal is absent or the control logic is in error, abnormal opening and closing of the electromagnetic valve, untimely gas sampling analysis and even stability of the hydrogen production system are possibly caused; the expensive solenoid valve of the detection system also increases the overall cost of the hydrogen production system.
Disclosure of Invention
The utility model aims to provide a hydrogen production system capable of stopping and maintaining pressure, which adopts a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve to replace an electromagnetic valve, changes electric signal control into mechanical automatic control under gas pressure, reduces the complexity of the hydrogen production system and has low comprehensive cost.
In order to achieve the above purpose, the utility model provides a hydrogen production system capable of stopping and maintaining pressure, which comprises a hydrogen production unit, a nitrogen purging unit, an oxygen treatment unit, a hydrogen treatment unit and a purity detection unit, wherein two ends of an electrolytic tank of the hydrogen production unit are respectively communicated with the oxygen treatment unit and the hydrogen treatment unit, the oxygen treatment unit is communicated with an in-oxygen hydrogen on-line analyzer of the purity detection unit through a first one-way valve, the hydrogen treatment unit is communicated with the in-hydrogen oxygen on-line analyzer of the purity detection unit through a second one-way valve, the nitrogen purging unit is communicated with the oxygen treatment unit through a third one-way valve, and the nitrogen purging unit is communicated with the hydrogen treatment unit through a fourth one-way valve.
Preferably, a first air inlet of an oxygen separator of the oxygen treatment unit is communicated with an oxygen air outlet of the electrolysis unit, a first liquid outlet of the oxygen separator is communicated with the electrolysis tank, a first air outlet of the oxygen separator is communicated with a first gas-water separator, and the first gas-water separator is respectively communicated with an oxygen discharge port and the online analyzer of hydrogen in oxygen.
Preferably, a second air inlet of a hydrogen separator of the hydrogen treatment unit is communicated with a hydrogen air outlet of the electrolysis unit, a second liquid outlet of the hydrogen separator is communicated with the electrolysis tank, a second air outlet of the hydrogen separator is communicated with a second gas-water separator, and the second gas-water separator is respectively communicated with a drying purification device and the hydrogen-in-oxygen online analyzer.
Preferably, the first gas-water separator is communicated with the in-oxygen hydrogen on-line analyzer through a first stop valve and the first one-way valve in sequence, and the second gas-water separator is communicated with the in-oxygen hydrogen on-line analyzer through a second stop valve and the second one-way valve in sequence.
Preferably, the nitrogen purging unit is communicated with the oxygen separator through a first nitrogen replacement ball valve and the third one-way valve in sequence, and the nitrogen purging unit is communicated with the hydrogen separator through a second nitrogen replacement ball valve and the fourth one-way valve in sequence.
Therefore, the hydrogen production system with the structure capable of stopping and maintaining pressure has the beneficial effects that: 1. the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve are adopted to replace the electromagnetic valve, so that the electric signal control is changed into mechanical automatic control under the gas pressure, the complexity of the hydrogen production system is reduced, and the control points are reduced;
2. the first check valve, the second check valve, the third check valve and the fourth check valve are adopted to replace the electromagnetic valve, so that the service life is long, the replacement and the maintenance are convenient, and the comprehensive cost of the hydrogen production system is reduced;
3. the hydrogen production system adopts the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve, has a large pressure range when the opening pressure is designed, and is flexible to adjust.
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a hydrogen production system capable of stopping and maintaining pressure according to the present utility model.
Reference numerals
1. An electrolytic cell; 2. an oxygen separator; 3. a first gas-water separator; 4. a first stop valve; 5. a first one-way valve; 6. an on-line analyzer for hydrogen in oxygen; 7. a hydrogen separator; 8. a second gas-water separator; 9. a second shut-off valve; 10. an on-line analyzer for oxygen in hydrogen; 11. a second one-way valve; 12. a first nitrogen replacement ball valve; 13. a third one-way valve; 14. the second nitrogen replaces the ball valve; 15. a fourth one-way valve; 16. drying and purifying equipment.
Detailed Description
The technical scheme of the utility model is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
FIG. 1 is a schematic diagram of a hydrogen production system capable of stopping and maintaining pressure, as shown in the figure, comprising a hydrogen production unit, a nitrogen purging unit, an oxygen treatment unit, a hydrogen treatment unit and a purity detection unit. The two ends of an electrolytic tank 1 of the hydrogen production unit are respectively communicated with an oxygen treatment unit and a hydrogen treatment unit, the oxygen treatment unit is communicated with an in-oxygen hydrogen on-line analyzer 6 of the purity detection unit through a first one-way valve 5, and the hydrogen treatment unit is communicated with an in-hydrogen oxygen on-line analyzer 10 of the purity detection unit through a second one-way valve 11. The nitrogen purge unit is communicated with the oxygen treatment unit through a third one-way valve 13, and the nitrogen purge unit is communicated with the hydrogen treatment unit through a fourth one-way valve 15.
The water is electrolyzed in the electrolytic tank 1 to obtain hydrogen and oxygen, the oxygen enters the oxygen treatment unit and is discharged into air, and the hydrogen enters the hydrogen treatment unit and then enters the drying and purifying equipment 16 to obtain a hydrogen product. The purity detection unit detects the hydrogen content in the oxygen and the oxygen content in the hydrogen, and the hydrogen content in the oxygen directly reflects the performance of the diaphragm in the electrolytic tank 1. And detecting the oxygen content in the hydrogen gas, and judging the purity of the hydrogen gas. The nitrogen purging unit is used for performing air tightness test on the whole system and cleaning before starting up, and nitrogen is emptied after cleaning.
The first air inlet of the oxygen separator 2 of the oxygen treatment unit is communicated with the oxygen outlet of the electrolysis unit, and the first liquid outlet of the oxygen separator 2 is communicated with the electrolysis tank 1. The first air outlet of the oxygen separator 2 is communicated with the first gas-water separator 3, and the first gas-water separator 3 is respectively communicated with an oxygen discharge port and an in-oxygen hydrogen on-line analyzer 6.
The mixture of oxygen and liquid obtained by electrolysis enters the oxygen separator 2, and the liquid returns to the electrolytic tank 1 through the first liquid outlet of the oxygen separator 2 after being cooled. A small amount of liquid and oxygen enter the first gas-water separator 3, the first gas-water separator 3 puts the remaining liquid back into the electrolytic cell 1, and the oxygen is discharged into the air through an oxygen discharge port.
The second air inlet of the hydrogen separator 7 of the hydrogen treatment unit is communicated with the hydrogen air outlet of the electrolysis unit, and the second liquid outlet of the hydrogen separator 7 is communicated with the electrolysis tank 1. The second air outlet of the hydrogen separator 7 is communicated with a second gas-water separator 8, and the second gas-water separator 8 is respectively communicated with a drying and purifying device 16 and a hydrogen-in-oxygen on-line analyzer 10.
The mixture of hydrogen and liquid obtained by electrolysis enters the hydrogen separator 7, and the liquid is cooled and then returns to the electrolytic tank 1 through a second liquid outlet of the hydrogen separator 7. A small amount of liquid and hydrogen enter a second gas-water separator 8, the second gas-water separator 8 returns the residual liquid to the electrolytic tank 1, the hydrogen enters the hydrogen-in-oxygen online analyzer 10 for purity detection before entering the drying and purifying unit for purification, and the hydrogen still needs to enter the hydrogen-in-oxygen online analyzer 10 for purity detection after being purified.
The first gas-water separator 3 is communicated with the in-oxygen hydrogen on-line analyzer 6 through the first stop valve 4 and the first one-way valve 5 in sequence, and the second gas-water separator 8 is communicated with the in-oxygen hydrogen on-line analyzer 10 through the second stop valve 9 and the second one-way valve 11 in sequence. When the in-oxygen hydrogen on-line analyzer 6 works, the first stop valve 4 and the first one-way valve 5 are opened, and the oxygen enters the in-oxygen hydrogen on-line analyzer 6 to detect the purity of the oxygen. When the hydrogen oxygen on-line analyzer 10 works, the second stop valve 9 and the second one-way valve 11 are opened, and the hydrogen enters the hydrogen oxygen on-line analyzer 10 to detect the purity of the hydrogen oxygen.
The first check valve 5 and the second check valve 11 are arranged, and the purity detection unit can automatically perform sampling analysis by utilizing the characteristic of unidirectional conduction. When the oxygen or the hydrogen reaches a certain pressure, the first check valve 5 or the second check valve 11 can be automatically opened, so that the automatic sampling analysis of the purity detection unit is realized.
When the hydrogen production system stops producing hydrogen, one side of the hydrogen treatment unit needs to maintain pressure, so that the influence on the pressure and purity of the next hydrogen production is avoided. If the pressure is higher than the required pressure, the second shut-off valve 9 is opened to release hydrogen to reduce the pressure.
The nitrogen purging unit is communicated with the oxygen separator 2 through a first nitrogen replacement ball valve 12 and a third one-way valve 13 in sequence, and the nitrogen purging unit is communicated with the hydrogen separator 7 through a second nitrogen replacement ball valve 14 and a fourth one-way valve 15 in sequence.
When in use, the electrolytic tank 1 is electrolyzed to obtain hydrogen and oxygen, the hydrogen enters the drying and purifying equipment 16 through the hydrogen treatment unit, and the oxygen is emptied after passing through the oxygen treatment unit. The purity detection unit performs automatic sampling analysis on the oxygen purity and the hydrogen purity respectively, and when the hydrogen production system needs pressure maintaining, the pressure can be reduced through the second one-way valve 11.
Therefore, the hydrogen production system with the structure, which can stop and maintain pressure, adopts the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve to replace the electromagnetic valve, changes the electric signal control into the mechanical automatic control under the gas pressure, reduces the complexity of the hydrogen production system and has low comprehensive cost.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting it, and although the present utility model has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the utility model can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the utility model.
Claims (5)
1. The utility model provides a hydrogen manufacturing system of pressurize can shut down which characterized in that: the hydrogen production device comprises a hydrogen production unit, a nitrogen purging unit, an oxygen treatment unit, a hydrogen treatment unit and a purity detection unit, wherein two ends of an electrolytic tank of the hydrogen production unit are respectively communicated with the oxygen treatment unit and the hydrogen treatment unit, the oxygen treatment unit is communicated with an in-oxygen hydrogen on-line analyzer of the purity detection unit through a first one-way valve, the hydrogen treatment unit is communicated with an in-hydrogen oxygen on-line analyzer of the purity detection unit through a second one-way valve, the nitrogen purging unit is communicated with the oxygen treatment unit through a third one-way valve, and the nitrogen purging unit is communicated with the hydrogen treatment unit through a fourth one-way valve.
2. The shutdown pressure maintaining hydrogen production system as claimed in claim 1, wherein: the first air inlet of the oxygen separator of the oxygen treatment unit is communicated with the oxygen air outlet of the electrolysis unit, the first liquid outlet of the oxygen separator is communicated with the electrolysis tank, the first air outlet of the oxygen separator is communicated with the first gas-water separator, and the first gas-water separator is respectively communicated with the oxygen discharge port and the online analyzer of hydrogen in oxygen.
3. The shutdown pressure maintaining hydrogen production system as claimed in claim 1, wherein: the second air inlet of the hydrogen separator of the hydrogen treatment unit is communicated with the hydrogen air outlet of the electrolysis unit, the second liquid outlet of the hydrogen separator is communicated with the electrolysis tank, the second air outlet of the hydrogen separator is communicated with a second gas-water separator, and the second gas-water separator is respectively communicated with the drying and purifying equipment and the hydrogen-in-oxygen on-line analyzer.
4. The shutdown pressure maintaining hydrogen production system as claimed in claim 1, wherein: the first gas-water separator is communicated with the in-oxygen hydrogen on-line analyzer through the first stop valve and the first one-way valve in sequence, and the second gas-water separator is communicated with the in-oxygen hydrogen on-line analyzer through the second stop valve and the second one-way valve in sequence.
5. The shutdown pressure maintaining hydrogen production system as claimed in claim 1, wherein: the nitrogen purging unit is communicated with the oxygen separator through the first nitrogen replacement ball valve and the third one-way valve in sequence, and is communicated with the hydrogen separator through the second nitrogen replacement ball valve and the fourth one-way valve in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321551904.4U CN220099210U (en) | 2023-06-16 | 2023-06-16 | Hydrogen production system capable of stopping and maintaining pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321551904.4U CN220099210U (en) | 2023-06-16 | 2023-06-16 | Hydrogen production system capable of stopping and maintaining pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220099210U true CN220099210U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321551904.4U Active CN220099210U (en) | 2023-06-16 | 2023-06-16 | Hydrogen production system capable of stopping and maintaining pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220099210U (en) |
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2023
- 2023-06-16 CN CN202321551904.4U patent/CN220099210U/en active Active
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