CN216896830U - Hydrogen safety emptying device - Google Patents
Hydrogen safety emptying device Download PDFInfo
- Publication number
- CN216896830U CN216896830U CN202220080786.2U CN202220080786U CN216896830U CN 216896830 U CN216896830 U CN 216896830U CN 202220080786 U CN202220080786 U CN 202220080786U CN 216896830 U CN216896830 U CN 216896830U
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- CN
- China
- Prior art keywords
- hydrogen
- pipeline
- emptying
- carbon dioxide
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 239000001257 hydrogen Substances 0.000 title claims abstract description 93
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 93
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000007789 gas Substances 0.000 claims abstract description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 29
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 29
- 239000001301 oxygen Substances 0.000 claims abstract description 29
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 29
- 206010000369 Accident Diseases 0.000 abstract description 2
- 238000005474 detonation Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 description 7
- 101001024616 Homo sapiens Neuroblastoma breakpoint family member 9 Proteins 0.000 description 4
- 102100037013 Neuroblastoma breakpoint family member 9 Human genes 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000004200 deflagration Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
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
- 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
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A hydrogen safety emptying device relates to the field of hydrogen safety emptying. The problem of current device often take place detonation or fire accident when hydrogen safety is emptied is solved. The gas outlet of the hydrogen emptying system is communicated with the gas inlet of the hydrogen buffer tank through a hydrogen pipeline, and the gas outlet of the hydrogen buffer tank is simultaneously communicated with the gas outlet of the carbon dioxide pipeline and the gas inlet of the emptying pipeline; the first program control valve is arranged on the air inlet side of the hydrogen buffer tank; the second program control valve is arranged on the carbon dioxide pipeline; the gas inlet of the carbon dioxide pipeline is communicated with the gas outlet of the carbon dioxide gas cylinder; a flame arrester is arranged at the air outlet end of the emptying pipeline; the oxygen concentration detector and the hydrogen concentration detector are both arranged on the emptying pipeline, the oxygen concentration detector is used for detecting the concentration of oxygen in the air in the emptying pipeline, and the hydrogen concentration detector is used for detecting the concentration of hydrogen in the air in the emptying pipeline. The utility model is suitable for hydrogen safety emptying.
Description
Technical Field
The utility model relates to the field of hydrogen safety emptying.
Background
The explosion lower limit of the mixture of hydrogen and air is 4%, the explosion upper limit is 74%, the explosion limit range is large, and the ignition energy of hydrogen is very small (9.019MJ/mol), so that the hydrogen is very easy to ignite and detonate. At present, the hydrogen production process relates to overpressure emptying or pipeline pressure emptying and the like, and is mainly characterized in that atmospheric emission is adopted, and a flame arrester is arranged at the tail end of an emptying pipeline to prevent backfire during combustion, but deflagration and ignition accidents can occur during emptying.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydrogen safety emptying device, aiming at solving the problem that explosion or fire accidents often occur when the hydrogen is safely emptied in the existing device.
The utility model relates to a hydrogen safety emptying device, which comprises: the device comprises a carbon dioxide gas cylinder, a hydrogen buffer tank, an oxygen concentration detector, a hydrogen concentration detector, a first program control valve, a second program control valve and a flame arrester;
the gas outlet of the hydrogen emptying system is communicated with the gas inlet of the hydrogen buffer through a hydrogen pipeline, and the gas outlet of the hydrogen buffer tank is simultaneously communicated with the gas outlet of the carbon dioxide pipeline and the gas inlet of the emptying pipeline;
the first program control valve is arranged on the air inlet side of the hydrogen buffer tank; the second program control valve is arranged on the carbon dioxide pipeline;
the gas inlet of the carbon dioxide pipeline is communicated with the gas outlet of the carbon dioxide gas cylinder; a flame arrester is arranged at the air outlet end of the emptying pipeline;
the oxygen concentration detector and the hydrogen concentration detector are both arranged on the emptying pipeline, the oxygen concentration detector is used for detecting the concentration of oxygen in the air in the emptying pipeline, and the hydrogen concentration detector is used for detecting the concentration of hydrogen in the air in the emptying pipeline.
Further, the utility model also comprises a first one-way valve which is arranged at the gas outlet side of the hydrogen buffer tank.
Further, in the utility model, a second one-way valve is also arranged on the carbon dioxide pipeline, and the second one-way valve is arranged between the second program control valve and the air outlet of the carbon dioxide pipeline.
Further, the utility model also comprises a valve controller, wherein the valve controller receives the concentration of the oxygen detected by the oxygen concentration detector and the concentration of the hydrogen detected by the hydrogen concentration detector, and controls the switching value of the second program control valve according to the concentration of the oxygen and the concentration of the hydrogen.
Further, in the utility model, the valve controller controls the second program control valve to open when the oxygen concentration in the received hydrogen gas emptying pipeline exceeds 5%, carbon dioxide enters the emptying pipeline, and the second program control valve is controlled to close when the oxygen concentration in the hydrogen gas emptying pipeline is lower than 2%.
Furthermore, the hydrogen flame detector is further included, a signal output end of the hydrogen flame detector is connected with the controller, and the controller controls the first program control valve to be closed according to a signal detected by flame detection.
According to the hydrogen safety emptying device, when the oxygen concentration detector detects that the oxygen concentration in the hydrogen emptying pipeline exceeds 5%, the controller gives a second program control valve opening signal, the second program control valve opens carbon dioxide into the emptying pipeline to replace oxygen-containing gas, when the oxygen concentration is lower than 2%, the controller gives a second program control valve closing signal, the second program control valve is closed, and the hydrogen is guaranteed not to burn or deflagrate under the condition of static electricity or frictional heat when being emptied through the emptying pipeline. When hydrogen was emptied through the blow-down pipeline, hydrogen in the blow-down pipeline was detected to the hydrogen concentration detector, and control system control second program control valve opened, and carbon dioxide together got rid of through the pipeline with hydrogen, effectively reduced hydrogen concentration, prevented that detonation and the accident of catching fire from letting go. Set up the buffer tank, be the ordinary pressure in the normal condition buffer tank, the buffering is stored in leading to guan yu buffer tank when hydrogen unloading, makes gas pressure reduce, prevents hydrogen high pressure, high-speed emission, has prevented abnormal accident from taking place. When hydrogen discharges, hydrogen flame detector sets up at the blow-down pipeline end, and when detecting that there is the hydrogen burning, signal transmission arrives the controller, and the controller will send the shut-off signal for first program control valve, stops the hydrogen and discharges, prevents that the accident from expanding.
Drawings
Fig. 1 is a schematic structural diagram of the hydrogen safety vent device of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The first embodiment is as follows: the present embodiment will be described below with reference to fig. 1, and the hydrogen safety vent apparatus according to the present embodiment includes: a carbon dioxide gas cylinder V101, a hydrogen buffer tank V102, an oxygen concentration detector AE01, a hydrogen concentration detector AE02, a first program-controlled valve V1, a second program-controlled valve V4 and a flame arrester Z1;
the gas outlet of the hydrogen emptying system is communicated with the gas inlet of a hydrogen buffer tank V102 through a hydrogen pipeline a, and the gas outlet of the hydrogen buffer tank V102 is simultaneously communicated with the gas outlet of a carbon dioxide pipeline b and the gas inlet of an emptying pipeline c;
the first programmable valve V1 is disposed on the intake port side of the hydrogen buffer tank V102; the second program control valve V4 is arranged on the carbon dioxide pipeline b;
the gas inlet of the carbon dioxide pipeline b is communicated with the gas outlet of a carbon dioxide gas bottle V101; the gas outlet end of the emptying pipeline c is provided with a flame arrester Z1;
the oxygen concentration detector AE01 and the hydrogen concentration detector AE02 are both arranged on the emptying pipeline c, the oxygen concentration detector AE01 is used for detecting the concentration of oxygen in the gas in the emptying pipeline c, and the hydrogen concentration detector AE02 is used for detecting the concentration of hydrogen in the gas in the emptying pipeline c.
Further, in the present invention, a first check valve V2 is further provided, and a first check valve V2 is provided on the gas outlet side of the hydrogen buffer tank V102.
Furthermore, in the utility model, a second one-way valve V3 is further disposed on the carbon dioxide pipeline b, and the second one-way valve V3 is disposed between the second programmable valve V4 and the outlet of the carbon dioxide pipeline b.
Further, in the present invention, a valve controller is further included, and the valve controller receives the oxygen concentration detected by the oxygen concentration detector AE01 and the hydrogen concentration detected by the hydrogen concentration detector AE02, and controls the opening and closing amount of the second programmable valve V4 according to the oxygen concentration and the hydrogen concentration.
Further, in the utility model, when the oxygen concentration in the received hydrogen gas emptying pipeline c exceeds 5%, the valve controller controls the second program control valve V4 to be opened, carbon dioxide enters the emptying pipeline c, and when the oxygen concentration in the hydrogen gas emptying pipeline c is lower than 2%, the valve controller controls the second program control valve V4 to be closed.
Further, the hydrogen flame detector AT is further included, a signal output end of the hydrogen flame detector AT is connected with the controller, and the controller controls the first program control valve V1 to be closed according to a signal detected by flame detection.
In the embodiment, the first program control valve V1 is opened when the hydrogen emptying process is performed by the controller, and when the hydrogen flame detector AT detects a flame signal, the first program control valve V1 is rapidly controlled to be closed, so that the problem of combustion or explosion is avoided.
The hydrogen safety emptying device disclosed by the utility model solves the problems of emptying hydrogen combustion and deflagration accidents in the hydrogen emptying process under the conditions of lightning stroke, static electricity, frictional heat and the like. The explosion limit of the mixture of hydrogen and air is 4 percent, the upper limit is 74 percent, the explosion limit range is large, and the ignition energy of hydrogen is very small (9.019MJ/mol), so that the hydrogen is easy to ignite and deflagrate. At present, the hydrogen production process relates to overpressure emptying or pipeline pressure emptying and the like, and is mainly characterized in that atmospheric emission is adopted, and a flame arrester is arranged at the tail end of an emptying pipeline to prevent backfire during combustion, but deflagration and ignition accidents can occur during emptying.
Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that various dependent claims and the features described herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (3)
1. Hydrogen safety vent, its characterized in that includes: the device comprises a carbon dioxide gas cylinder (V101), a hydrogen buffer tank (V102), an oxygen concentration detector (AE01), a hydrogen concentration detector (AE02), a first program-controlled valve (V1), a second program-controlled valve (V4) and a flame arrester (Z1);
the gas outlet of the hydrogen emptying system is communicated with the gas inlet of a hydrogen buffer tank (V102) through a hydrogen pipeline (a), and the gas outlet of the hydrogen buffer tank (V102) is simultaneously communicated with the gas outlet of a carbon dioxide pipeline (b) and the gas inlet of an emptying pipeline (c);
the first programmable valve (V1) is arranged on the air inlet side of the hydrogen buffer tank (V102); the second programmable valve (V4) is arranged on the carbon dioxide pipeline (b);
the gas inlet of the carbon dioxide pipeline (b) is communicated with the gas outlet of a carbon dioxide gas cylinder (V101); a flame arrester (Z1) is arranged at the air outlet end of the emptying pipeline (c);
the oxygen concentration detector (AE01) and the hydrogen concentration detector (AE02) are both arranged on the emptying pipeline (c), the oxygen concentration detector (AE01) is used for detecting the concentration of oxygen in the gas in the emptying pipeline (c), and the hydrogen concentration detector (AE02) is used for detecting the concentration of hydrogen in the gas in the emptying pipeline (c).
2. The hydrogen safety vent according to claim 1, further comprising a first check valve (V2), the first check valve (V2) being disposed on the gas outlet side of the hydrogen buffer tank (V102).
3. The hydrogen safety vent device according to claim 1, wherein a second one-way valve (V3) is further arranged on the carbon dioxide pipeline (b), and the second one-way valve (V3) is arranged between the second program-controlled valve (V4) and the outlet of the carbon dioxide pipeline (b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220080786.2U CN216896830U (en) | 2022-01-10 | 2022-01-10 | Hydrogen safety emptying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220080786.2U CN216896830U (en) | 2022-01-10 | 2022-01-10 | Hydrogen safety emptying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216896830U true CN216896830U (en) | 2022-07-05 |
Family
ID=82212255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220080786.2U Active CN216896830U (en) | 2022-01-10 | 2022-01-10 | Hydrogen safety emptying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216896830U (en) |
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2022
- 2022-01-10 CN CN202220080786.2U patent/CN216896830U/en active Active
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