CN113060271A - Hydrogen energy airship with novel airbag layout and using method - Google Patents
Hydrogen energy airship with novel airbag layout and using method Download PDFInfo
- Publication number
- CN113060271A CN113060271A CN202110235272.XA CN202110235272A CN113060271A CN 113060271 A CN113060271 A CN 113060271A CN 202110235272 A CN202110235272 A CN 202110235272A CN 113060271 A CN113060271 A CN 113060271A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- air bag
- airbag
- airship
- auxiliary air
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/58—Arrangements or construction of gas-bags; Filling arrangements
- B64B1/62—Controlling gas pressure, heating, cooling, or discharging gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/58—Arrangements or construction of gas-bags; Filling arrangements
- B64B1/60—Gas-bags surrounded by separate containers of inert gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/58—Arrangements or construction of gas-bags; Filling arrangements
- B64B1/64—Gas valve operating mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a hydrogen energy airship with a novel airbag layout, which comprises an airbag and a power device, wherein the airbag is arranged in the airbag; the air bag comprises a main air bag and a plurality of auxiliary air bags; a plurality of clapboards are arranged in the main airbag, and divide the inner cavity of the main airbag into a plurality of compartments; the auxiliary air bags are positioned around the main air bag, and the auxiliary air bags are connected with the corresponding compartments in the main air bag through channels provided with regulating valves; each auxiliary air bag is connected with the hydrogen loop through a branch pipeline; the invention adopts a plurality of auxiliary airbags to store hydrogen, and utilizes the property of hydrogen as floating gas to improve the load of the airship; secondly, the scale of hydrogen leakage is reduced, and the risk of hydrogen leakage is reduced from the source; the amount of the helium used for dilution can be saved on the premise that the hydrogen is fully diluted to be below the explosion limit by the helium when the hydrogen leaks.
Description
Technical Field
The invention relates to the field of aerostat design, in particular to a hydrogen energy airship with a novel airbag layout and a using method thereof.
Background
The airship is an aerostat for realizing the air stagnation performance by utilizing the air buoyancy, has the characteristics of low power consumption and large load compared with other aerostats needing power maintenance, and is widely applied to the fields of entertainment, surveying and mapping, weather observation and the like.
Some new studies have shown that some low density combustible gases capable of serving as airship fuel can be stored directly in the airship envelope, providing part of the buoyancy, while serving as airship fuel.
However, unlike helium, when flammable gases at explosive concentrations come into contact with air, violent reactions occur, seriously threatening the safety of the airship. Therefore, the tightness of the airbag for storing combustible gas is closely related to the safety of the airship during operation.
Accordingly, there is a need for improvements in the art.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a hydrogen energy airship with a novel airbag layout structure. The air bag is used for solving the problem that the air bag for storing combustible gas has potential safety hazard caused by damage of the air bag in the flying process, and provides sufficient time for the airship to adjust the flying state in time.
The invention provides a hydrogen energy airship with a novel airbag layout, which comprises an airbag and a power device, wherein the airbag is arranged in the airbag;
the air bag comprises a main air bag and a plurality of auxiliary air bags; a plurality of clapboards are arranged in the main airbag, and divide the inner cavity of the main airbag into a plurality of compartments; the auxiliary air bags are positioned around the main air bag, and the auxiliary air bags are connected with the corresponding compartments in the main air bag through channels provided with regulating valves;
each auxiliary air bag is connected with a hydrogen loop through a branch pipeline, and the hydrogen loop is sequentially connected with a hydrogen fuel cell and a power device;
the hydrogen loop is sequentially connected with the hydrogen fuel cell and the power device;
the air loop is connected with the hydrogen fuel cell and the power device in sequence.
As an improvement to the hydrogen energy airship with a novel airbag layout of the present invention:
helium is stored in the main air bag, and hydrogen is stored in the auxiliary air bag.
As an improvement to the hydrogen energy airship with a novel airbag layout of the present invention:
and a pressure sensor is arranged in the auxiliary air bag, and a gas flowmeter is arranged on the branch pipeline.
As an improvement to the hydrogen energy airship with a novel airbag layout of the present invention:
a plurality of clapboards are sequentially arranged in the main airbag in parallel along the length direction of the main airbag, and the inner cavity of the main airbag is divided into a plurality of compartments with the same volume by the clapboards.
As an improvement to the hydrogen energy airship with a novel airbag layout of the present invention:
the number of the auxiliary air bags is the same as that of the compartments, and the auxiliary air bags correspond to the compartments one by one.
As an improvement to the hydrogen energy airship with a novel airbag layout of the present invention:
each auxiliary air bag is connected with the compartment in the corresponding main air bag through a channel provided with a regulating valve.
The invention also provides a use method of the hydrogen energy airship with the novel airbag layout, which comprises the following steps:
firstly, respectively filling helium and hydrogen into an auxiliary airbag and a main airbag according to the volume ratio of 2:1, and lifting the airship under the action of the common buoyancy of the helium and the hydrogen;
hydrogen enters the hydrogen fuel cell from the auxiliary air bag through the branch pipeline and the hydrogen loop to provide power for the airship, when the system detects hydrogen leakage according to changes of the pressure sensor and the flow meter, the auxiliary air bag with the leakage can be immediately positioned, the corresponding regulating valve of the pipeline connected with the main air bag is opened, and the sufficient helium can rapidly dilute the concentration of the hydrogen to be below the explosion limit.
As an improvement on the use method of the hydrogen energy airship with the novel airbag layout, the invention comprises the following steps:
the method comprises the following steps that a pressure threshold is preset in a controller according to the filling amount of hydrogen, a power device sends a working state signal of the power device to the controller, and a pressure sensing device detects the pressure of combustible gas and sends a pressure signal to the controller; the controller judges whether to open the regulating valve according to the pressure signal, the power device working state signal and a preset pressure threshold; when the power device does not work and the pressure signal is smaller than the range of the preset pressure threshold value, the controller sends an opening signal to the regulating valve, and the regulating valve is opened;
when the combustible gas leaks when the power device works and signals of a pressure sensor and a gas flowmeter in the auxiliary air bag exceed an error range, a regulating valve between the auxiliary air bag and the main air bag is opened according to the signals;
calculating whether signals of a pressure sensor and a gas flowmeter in the auxiliary air bag exceed an error range or not according to a PV (maximum partial pressure) formula (nrT);
wherein: p is the gas pressure, V is the gas volume, n is the amount of gas species, R is the molar gas constant, T is the gas temperature;
r is a constant, P is proportional to n under a certain temperature condition, and the volume of the combustible gas detected by the gas flowmeter is that n is V/22.4, and the error is set to be within a range of 2%.
When the sensor of the airship detects leakage in the flying process, the adjusting valve connected with the airship is opened, the helium gas which is set in the main airbag in proportion to the helium gas in the combustible airbag in advance enters the corresponding combustible airbag through the pipeline to dilute the combustible gas, so that violent reaction caused by direct contact of the combustible gas with air in the leakage process is avoided, and the airship has sufficient time to adjust the flying state.
The starting point of the invention is to solve the problem that when the combustible gas leaks, the combustible gas directly contacts with the air to cause violent combustion or even explosion, and the airship can be left for enough time to safely land. Since the operating environment of the airship is exposed to direct sunlight for a long time and inevitably causes oxidation of the material, the probability of gas leakage due to breakage of the airbag is significantly increased as the operating time is prolonged. The helium storing main airbag compartments correspond to the hydrogen storing auxiliary airbags one to one, when leakage is detected, a regulating valve between a certain pair of matched main airbags and auxiliary airbags is opened, sufficient helium quickly dilutes the hydrogen concentration to be below the explosion limit, more time is provided for the airship to adjust the flight state in time, and the probability of detonation caused by leakage of combustible gas of the airship is remarkably reduced.
The hydrogen energy airship with the novel airbag layout has the technical advantages that:
the plurality of auxiliary airbags are used for storing hydrogen, and the load of the airship is improved by utilizing the property of the hydrogen as the floating gas; secondly, the scale of hydrogen leakage is reduced, and the risk of hydrogen leakage is reduced from the source; the amount of the helium used for dilution can be saved on the premise that the hydrogen is fully diluted to be below the explosion limit by the helium when the hydrogen leaks.
Drawings
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings.
Fig. 1 is a schematic structural diagram of a hydrogen energy airship with a novel airbag layout.
In the figure: 1-ballonet; 2-adjusting the valve; 3-main airbag; 4-hydrogen loop; 5-air circuit; 6, a power device; 7-a hydrogen fuel cell;
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Example 1, a hydrogen energy airship with a novel airbag layout, as shown in fig. 1, includes an airbag and a power plant 6. The air bag comprises a main air bag 3 and a plurality of auxiliary air bags 1, a plurality of clapboards are sequentially arranged in the main air bag 3 in parallel along the length direction of the main air bag, and the clapboards divide the inner cavity of the main air bag 3 into a plurality of compartments with the same volume. The auxiliary air bags 1 are arranged around the main air bag 3, the number of the auxiliary air bags 1 is the same as that of the compartments, and each auxiliary air bag 1 is connected with the corresponding compartment in the main air bag 3 through a channel provided with a regulating valve 2.
The main bag 3 stores helium gas, and the sub-bag 1 stores combustible gas (hydrogen gas).
The controller is respectively connected with the motor 6, the pressure sensor, the gas flowmeter and the regulating valve 2 in a signal mode.
Each ballonet 1 is connected with a hydrogen loop 4 through a branch pipeline 8, and the hydrogen loop 4 is sequentially connected with a hydrogen fuel cell 7 and a power device 6.
The air circuit 5 is connected to a hydrogen fuel cell 7 and a power plant 6 in this order.
A pressure sensor is arranged in the auxiliary air bag 1, and a gas flowmeter is arranged on a branch pipeline 8 connecting the auxiliary air bag 1 and the hydrogen fuel cell 7 and used for monitoring the change of hydrogen;
when the combustible gas leaks when the power device 6 does not work, the regulating valve 2 is opened according to the signal of the pressure sensor in the hydrogen bag, helium immediately enters the auxiliary air bag 1 from the matched compartment of the main air bag 3, the hydrogen concentration is quickly diluted to be below the explosion limit, and the danger degree of leakage is reduced.
The invention relates to a method for operating a hydrogen energy airship with a novel airbag layout, which comprises the following steps:
firstly, helium and hydrogen are respectively filled into a secondary airbag 1 and a primary airbag 3 according to the volume ratio of 2:1, and the airship is lifted off under the action of the common buoyancy of the helium and the hydrogen.
Hydrogen enters a hydrogen fuel cell 7 from the auxiliary air bag 1 through a branch pipeline 8 and a hydrogen loop 4 to provide power for the airship, when the system detects hydrogen leakage according to changes of a pressure sensor and a flowmeter, the auxiliary air bag 1 with the leakage can be immediately positioned, an adjusting valve 2 of a pipeline connected with the main air bag 3 is opened, and sufficient helium rapidly dilutes the concentration of the hydrogen to be below the explosion limit so as to provide sufficient time for the airship to adjust the flight state in time.
The method specifically comprises the following steps: in the controller, a pressure threshold value is preset according to the filling amount of hydrogen, the power device 6 sends a working state signal of the power device to the controller, and the pressure sensing device detects the pressure of the combustible gas and sends a pressure signal to the controller; the controller judges whether to open the regulating valve 2 according to the pressure signal, the power device working state signal and a preset pressure threshold; when the power device does not work at the moment and the pressure signal is smaller than the range of the preset pressure threshold value, the controller sends an opening signal to the regulating valve 2, and the regulating valve 2 is opened.
When the combustible gas leaks when the power device works and the signals of the pressure sensor and the gas flowmeter in the auxiliary air bag 1 exceed the error range, the regulating valve 2 between the auxiliary air bag 1 and the main air bag 3 is opened according to the signals.
Calculating whether signals of a pressure sensor and a gas flowmeter in the auxiliary air bag 1 exceed an error range according to a PV (maximum partial pressure) formula (nrT);
wherein: p is the gas pressure, V is the gas volume, n is the amount of gas species, R is the molar gas constant, and T is the gas temperature.
R is a constant, P is proportional to n under a certain temperature condition, and the volume of the combustible gas detected by the gas flowmeter is that n is V/22.4, and the error is set to be within a range of 2%.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (8)
1. A hydrogen energy airship with a novel airbag layout is characterized in that: comprises an air bag and a power device;
the air bag comprises a main air bag (3) and a plurality of auxiliary air bags (1); a plurality of clapboards are arranged in the main air bag (3), and the clapboards divide the inner cavity of the main air bag (3) into a plurality of compartments; the auxiliary air bags (1) are positioned around the main air bag (3), and the auxiliary air bags (1) are connected with compartments in the corresponding main air bag (3) through channels provided with regulating valves (2);
each auxiliary air bag (1) is connected with a hydrogen loop (4) through a branch pipeline (8), and the hydrogen loop (4) is sequentially connected with a hydrogen fuel cell (7) and a power device (6);
the hydrogen loop (4) is sequentially connected with a hydrogen fuel cell (7) and a power device (6);
the air circuit (5) is connected with a hydrogen fuel cell (7) and a power device (6) in sequence.
2. The hydrogen-powered airship with a novel airbag layout as defined in claim 1, wherein:
helium is stored in the main air bag (3), and hydrogen is stored in the auxiliary air bag (1).
3. A hydrogen-powered airship with a novel airbag layout as defined by claim 2 wherein:
a pressure sensor is arranged in the auxiliary air bag (1), and a gas flowmeter is arranged on the branch pipeline (8).
4. A hydrogen-powered airship with a novel airbag layout as defined by claim 3 wherein:
a plurality of clapboards are sequentially arranged in the main airbag (3) in parallel along the length direction of the main airbag in sequence, and the clapboards divide the inner cavity of the main airbag (3) into a plurality of compartments with the same volume.
5. The hydrogen-powered airship with the novel airbag layout as set forth in claim 4, wherein:
the number of the auxiliary airbags (1) is the same as that of the compartments, and the auxiliary airbags (1) correspond to the compartments one by one.
6. The hydrogen-powered airship with the novel airbag layout as set forth in claim 5, wherein:
each auxiliary air bag (1) is connected with the compartment in the corresponding main air bag (3) through a channel provided with a regulating valve (2).
7. A method of using a hydrogen airship with a novel envelope layout, using a hydrogen airship with a novel envelope layout as claimed in any one of claims 1 to 6, characterized in that: the method comprises the following steps:
firstly, filling helium and hydrogen into a secondary airbag (1) and a primary airbag (3) respectively according to the volume ratio of 2:1, and lifting the airship under the action of the common buoyancy of the helium and the hydrogen;
hydrogen enters a hydrogen fuel cell (7) from the auxiliary air bag (1) through a branch pipeline (8) and a hydrogen loop (4) to provide power for the airship, when the system detects hydrogen leakage according to changes of a pressure sensor and a flowmeter, the auxiliary air bag (1) with the leakage is immediately positioned, a corresponding regulating valve (2) of a pipeline connected with the main air bag (3) is opened, and the hydrogen is rapidly diluted to the concentration below the explosion limit by sufficient helium.
8. The use method of the hydrogen energy airship with the novel airbag layout as claimed in claim 7, is characterized in that:
in the controller, a pressure threshold value is preset according to the filling amount of hydrogen, the power device (6) sends a working state signal of the power device to the controller, and the pressure sensing device detects the pressure of the combustible gas and sends a pressure signal to the controller; the controller judges whether the regulating valve (2) needs to be opened or not according to the pressure signal, the power device working state signal and a preset pressure threshold; when the power device does not work at the moment and the pressure signal is smaller than the range of the preset pressure threshold value, the controller sends an opening signal to the regulating valve (2), and the regulating valve (2) is opened;
when combustible gas leaks when the power device works and signals of a pressure sensor and a gas flowmeter in the auxiliary air bag (1) exceed an error range, the regulating valve (2) between the auxiliary air bag (1) and the main air bag (3) is opened according to the signals;
calculating whether signals of a pressure sensor and a gas flowmeter in the auxiliary air bag (1) exceed an error range or not according to a PV (maximum partial pressure) nRT (maximum partial pressure) formula;
wherein: p is the gas pressure, V is the gas volume, n is the amount of gas species, R is the molar gas constant, T is the gas temperature;
r is a constant, P is proportional to n under a certain temperature condition, and the volume of the combustible gas detected by the gas flowmeter is that n is V/22.4, and the error is set to be within a range of 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110235272.XA CN113060271A (en) | 2021-03-03 | 2021-03-03 | Hydrogen energy airship with novel airbag layout and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110235272.XA CN113060271A (en) | 2021-03-03 | 2021-03-03 | Hydrogen energy airship with novel airbag layout and using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113060271A true CN113060271A (en) | 2021-07-02 |
Family
ID=76559745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110235272.XA Pending CN113060271A (en) | 2021-03-03 | 2021-03-03 | Hydrogen energy airship with novel airbag layout and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113060271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114348232A (en) * | 2021-12-02 | 2022-04-15 | 北京电子工程总体研究所 | Pressure adjusting method for aerostat |
| WO2024083876A1 (en) * | 2022-10-19 | 2024-04-25 | Hylight | Aerostat including a system for controlling the pressure of the dihydrogen contained in the lift enclosure thereof, and associated pressure control method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2298201Y (en) * | 1997-03-19 | 1998-11-25 | 麻红生 | Boat seaplane |
| CN1359827A (en) * | 2000-12-22 | 2002-07-24 | 张涛 | Hard-shell balloon or airship using hydrogen safety and able to control its lifting |
| US20040155149A1 (en) * | 2003-02-06 | 2004-08-12 | Vasilios Dossas | Hydrogen lighter-than-air ship |
| US20050224638A1 (en) * | 2004-03-04 | 2005-10-13 | Goodey Thomas J | Non-flammable lifting medium for LTA craft, and LTA craft buoyed thereby |
| JP2006151320A (en) * | 2004-12-01 | 2006-06-15 | Fuji Heavy Ind Ltd | Airship and method of mounting accessory thereof |
| CN102530232A (en) * | 2011-11-12 | 2012-07-04 | 白雪海 | Controllable hydrogen flight vehicle |
| CN202464116U (en) * | 2011-10-21 | 2012-10-03 | 穆宏 | Safe hydrogen airship with three air bags |
| CN106553746A (en) * | 2015-09-28 | 2017-04-05 | 东莞前沿技术研究院 | Aerostatics and its utricule structure |
| CN107031810A (en) * | 2017-01-13 | 2017-08-11 | 李宝军 | Gasbag-type hovering flight device |
-
2021
- 2021-03-03 CN CN202110235272.XA patent/CN113060271A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2298201Y (en) * | 1997-03-19 | 1998-11-25 | 麻红生 | Boat seaplane |
| CN1359827A (en) * | 2000-12-22 | 2002-07-24 | 张涛 | Hard-shell balloon or airship using hydrogen safety and able to control its lifting |
| US20040155149A1 (en) * | 2003-02-06 | 2004-08-12 | Vasilios Dossas | Hydrogen lighter-than-air ship |
| US20050224638A1 (en) * | 2004-03-04 | 2005-10-13 | Goodey Thomas J | Non-flammable lifting medium for LTA craft, and LTA craft buoyed thereby |
| JP2006151320A (en) * | 2004-12-01 | 2006-06-15 | Fuji Heavy Ind Ltd | Airship and method of mounting accessory thereof |
| CN202464116U (en) * | 2011-10-21 | 2012-10-03 | 穆宏 | Safe hydrogen airship with three air bags |
| CN102530232A (en) * | 2011-11-12 | 2012-07-04 | 白雪海 | Controllable hydrogen flight vehicle |
| CN106553746A (en) * | 2015-09-28 | 2017-04-05 | 东莞前沿技术研究院 | Aerostatics and its utricule structure |
| CN107031810A (en) * | 2017-01-13 | 2017-08-11 | 李宝军 | Gasbag-type hovering flight device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114348232A (en) * | 2021-12-02 | 2022-04-15 | 北京电子工程总体研究所 | Pressure adjusting method for aerostat |
| CN114348232B (en) * | 2021-12-02 | 2024-03-19 | 北京电子工程总体研究所 | Pressure regulating method for aerostat |
| WO2024083876A1 (en) * | 2022-10-19 | 2024-04-25 | Hylight | Aerostat including a system for controlling the pressure of the dihydrogen contained in the lift enclosure thereof, and associated pressure control method |
| FR3141146A1 (en) * | 2022-10-19 | 2024-04-26 | Hylight | Aerostat comprising a system for controlling the pressure of the dihydrogen contained in its support enclosure - Associated pressure control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113060271A (en) | Hydrogen energy airship with novel airbag layout and using method | |
| CN101140252B (en) | System for testing gas sensors or semiconductor device performance | |
| CN102205876B (en) | Comprehensive control method for keeping fixed-point height of airship in stratosphere | |
| CN102759434A (en) | Systems and methods to diagnose valve leakage in a vehicle | |
| US8852824B2 (en) | Method to generate H2-exhaust sensor test pulse using electrically controlled pressure regulator | |
| CN112985711A (en) | Air tightness detection device and method thereof | |
| CN110178255A (en) | Method for determining the leakproofness of fuel cell pack | |
| JP5470234B2 (en) | Fuel cell cross leak determination method and fuel cell system | |
| CN205854462U (en) | Aerostatics | |
| CN109237296A (en) | A kind of hydrogen supply method and system applied to hydrogenation stations | |
| CN208368627U (en) | Fuel cell hydrogen-feeding system, fuel cell system and vehicle | |
| CN104049212A (en) | Low-pressure work performance test system for hydrogen-air fuel cell | |
| CN208795442U (en) | Hydrogen nitrogen mixed gas for new energy car battery packet fills leak test plant | |
| US11946833B2 (en) | Test assembly and test tooling | |
| CN109186883A (en) | A kind of rectangular lithium ion battery air tightness detecting system and method | |
| US20060248958A1 (en) | Pressure transducer for gaseous hydrogen environment | |
| WO2023051526A1 (en) | Fuel cell and airtightness detection method thereof | |
| CN110474071A (en) | A kind of hydrogen supply device and its operation method of fuel cell system | |
| CN213274736U (en) | Combined air-tightness experiment table | |
| CN201566830U (en) | Solar energy inflating and discharging pump for airship | |
| CN206582521U (en) | A kind of chlorine tank car unloading system pressure equaliser | |
| CN106876748B (en) | Integrated fuel storage device based on liquid hydrogen storage | |
| CN209746099U (en) | Testing device for metal-air battery | |
| JP2005123139A (en) | Fuel cell system | |
| CN221198821U (en) | Efficient gas mixing dilution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210702 |