CN215050732U - Hydrogen generator and methane monitoring device - Google Patents

Hydrogen generator and methane monitoring device Download PDF

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Publication number
CN215050732U
CN215050732U CN202120944007.4U CN202120944007U CN215050732U CN 215050732 U CN215050732 U CN 215050732U CN 202120944007 U CN202120944007 U CN 202120944007U CN 215050732 U CN215050732 U CN 215050732U
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China
Prior art keywords
valve
water
hydrogen
communicated
assembly
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Expired - Fee Related
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CN202120944007.4U
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Chinese (zh)
Inventor
郭瑞
郑乃源
杨宁
黄强
白宇
李媛
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Tianjin Eco Environmental Monitoring Center
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Tianjin Eco Environmental Monitoring Center
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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
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

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Abstract

The utility model discloses a hydrogen generator, which relates to the technical field of gas monitoring equipment, and comprises an electrolyzed water hydrogen production assembly and a filtering device, wherein the input end of the filtering device is used for being communicated with a water source, the output end of the filtering device is communicated with the input end of the electrolyzed water hydrogen production assembly, and the filtering device can continuously provide deionized water for the electrolyzed water hydrogen production assembly; the utility model also discloses a methane monitoring devices, methane monitoring devices include methane monitoring subassembly and foretell hydrogen generator, the output of hydrogen subassembly is produced to the brineelectrolysis with the hydrogen input intercommunication of methane monitoring subassembly can avoid hydrogen generator dry combustion method to damage to reduce the unable normal operating of monitoring facilities and the incidence of damage.

Description

Hydrogen generator and methane monitoring device
Technical Field
The utility model relates to a gas monitoring facilities technical field especially relates to a hydrogen generator and methane monitoring devices.
Background
Greenhouse gases mainly comprise CO2Monitoring for contaminants such as methane/non-methane.
The monitoring instrument of methane/non-methane needs the hydrogen generator to produce hydrogen, provides combustion-supporting gas for the monitoring instrument is igniteed, though present hydrogen generator no longer uses traditional old-fashioned mode of adding the medicament to prepare hydrogen, has improved to go on through the mode of electrolytic cell electrolysis deionized water, nevertheless because the automatic monitoring station of air is unmanned on duty station, in case deionized water consumes totally extremely easily leads to hydrogen generator dry combustion damage and monitoring equipment unable normal operating and damage.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydrogen generator and methane monitoring devices to solve the problem that above-mentioned prior art exists, can avoid hydrogen generator dry combustion method to damage, and reduce the unable normal operating of monitoring facilities and the incidence of damage.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a hydrogen generator, including hydrogen subassembly and the filter equipment is produced to electrolysis water, filter equipment's input is used for communicating with the water source, filter equipment's output with the input intercommunication of hydrogen subassembly is produced to electrolysis water, filter equipment can last do hydrogen subassembly is produced to electrolysis water provides deionized water.
Preferably, filter equipment includes sand filter assembly, carbon filter assembly, security personnel's filter assembly and reverse osmosis subassembly, sand filter assembly's input is used for communicating with the water source, sand filter assembly's output with carbon filter assembly's input intercommunication, carbon filter assembly's output with security personnel's filter assembly's input intercommunication, security personnel's filter assembly's output with reverse osmosis assembly's input intercommunication, reverse osmosis assembly's output with the input intercommunication of hydrogen subassembly is produced to the electrolysis water.
Preferably, the electrolytic water hydrogen production assembly further comprises a circulating pipe, a first valve, a second valve, a third valve, a flow sensor and a circulating pump, the first valve is arranged on an input pipe of the filtering device, the flow sensor and the second valve are arranged on a connecting pipe between an output end of the filtering device and an input end of the electrolytic water hydrogen production assembly, the flow sensor is located between the second valve and the filtering device, one end of the circulating pipe is communicated with the connecting pipe between the first valve and the filtering device, the other end of the circulating pipe is communicated with the connecting pipe between the second valve and the flow sensor, the third valve and the circulating pump are arranged on the circulating pipe, the flow sensor is electrically connected with the first valve, the second valve, the third valve and the circulating pump, the flow sensor can control the first valve and the second valve to be closed, and the third valve and the circulating pump are electrically connected with the first valve and the second valve to be closed The pump is turned on to increase the number of times of circulating filtration of the filtered water.
Preferably, the device also comprises a preposed liquid storage tank, and the output end of the second valve is communicated with the input end of the electrolyzed water hydrogen production assembly through the preposed liquid storage tank.
Preferably, electrolysis aquatic products hydrogen subassembly includes suction pump, liquid storage pot, electrolytic bath, vapour and liquid separator and purifies the subassembly, the input of suction pump with the output intercommunication of leading liquid storage pot, the output of suction pump with the input intercommunication of liquid storage pot, the output of liquid storage pot with the input intercommunication of electrolytic bath, the hydrogen output of electrolytic bath with vapour and liquid separator's input intercommunication, vapour and liquid separator's output with purify the input intercommunication of subassembly.
Preferably, the purification assembly comprises a silica gel purifier and a molecular sieve purifier, the input end of the silica gel purifier is communicated with the output end of the gas-liquid separator, and the output end of the silica gel purifier is communicated with the input end of the molecular sieve purifier.
Preferably, the water level monitoring device further comprises a first water level monitor and a fourth valve, the first water level monitor is located in the preposed liquid storage tank, the fourth valve is located on an input pipe of the filtering device, the first valve is located between the fourth valve and the filtering device, the first water level monitor is electrically connected with the fourth valve, and the first water level monitor can control the opening and closing of the fourth valve according to the water level in the preposed liquid storage tank.
Preferably, the water pump further comprises a second water level monitor, the second water level monitor is located in the liquid storage tank and electrically connected with the water pump, and the second water level monitor can control the opening and closing of the water pump according to the water level in the liquid storage tank.
Preferably, the first valve, the second valve, the third valve and the fourth valve are all solenoid valves.
The utility model also provides a methane monitoring devices, including methane monitoring subassembly and as above hydrogen generator, the output of hydrogen subassembly is produced to the brineelectrolysis with the hydrogen input intercommunication of methane monitoring subassembly.
The utility model discloses for prior art gain following technological effect:
the utility model provides a hydrogen generator and methane monitoring devices adopts filter equipment's input and water source intercommunication, filter equipment's output and the input intercommunication of hydrogen subassembly is produced to electrolysis water to filter equipment can last for electrolysis water hydrogen subassembly continuously provides the deionized water, can avoid because of long-term unmanned guard, and the deionized water consumption in the hydrogen generator is totally lost, avoids the hydrogen generator dry combustion method to damage, and reduces the unable normal operating of monitoring facilities and the incidence of damage.
Furthermore, the sand filter assembly intercepts suspended impurities in water through a granular filter material layer such as quartz sand and the like, mainly aiming at fine suspended matters, so that the water is clarified, the particle size of an internal filter material is generally 0.5-1.2 mm, the particle sizes of the filter material are sequentially arranged from top to bottom from fine to coarse, and the sizes of pores in the filter layer are gradually increased from top to bottom; the filter material in the carbon filter assembly is activated carbon, residual chlorine which cannot be removed in the previous stage of filtration can be adsorbed by the activated carbon filter so as to prevent the subsequent stage reverse osmosis membrane from being oxidized and degraded, and meanwhile, the filter material also adsorbs pollutants such as micromolecular organic matters leaked from the previous stage, and has obvious adsorption and removal effects on peculiar smell, colloid, pigment, heavy metal ions and the like in water; the safety filter component has the advantages that the inner filter material is a PP filter element with the diameter of 5 mu m, the PP filter element has the characteristics of large filter flow, large pollutant carrying capacity and small pressure loss, can block impurity particles with different particle sizes, and integrates surface filtration and deep filtration; the reverse osmosis component is internally provided with a reverse osmosis membrane, the aperture of the reverse osmosis membrane is as small as nano level, and H is carried out under certain pressure2The O molecule can pass through the reverse osmosis membrane, while the impurities in the water source, such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses, etc., cannot pass through the reverse osmosis membrane.
Furthermore, the circulating pipe, the first valve, the second valve, the third valve, the flow sensor and the circulating pump are arranged, and the flow sensor can control the first valve and the second valve to be closed and the third valve and the circulating pump to be opened to increase the circulating filtration frequency of the filtered water.
Furthermore, the arrangement of the preposed liquid storage tank can collect the deionized water filtered out by the filtering device, thereby playing a role of caching.
Furthermore, the electrolytic water hydrogen production component comprises a water suction pump, a liquid storage tank, an electrolytic cell, a gas-liquid separator and a purification component, the components are few, the structure is simple, and pure hydrogen can be directly produced.
Furthermore, a silica gel purifier is used for drying the hydrogen, and a molecular sieve purifier is used for removing impurities in the hydrogen.
Furthermore, the arrangement of the first water level monitor and the fourth valve can automatically control the opening and closing of the filtering device, and can improve the intelligence of the hydrogen generator.
Furthermore, the second water level monitor can automatically supplement deionized water into the liquid storage tank, so that the hydrogen generator is prevented from being damaged by dry burning.
Furthermore, first valve, second valve, third valve and fourth valve are the solenoid valve, easily purchase, and the signal of being convenient for control.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a hydrogen generator embodying one provision;
in the figure: 100-a hydrogen generator, 1-an electrolyzed water hydrogen production component, 2-a filtering device, 3-a water source, 4-a sand filtering component, 5-a carbon filtering component, 6-a security filtering component, 7-a reverse osmosis component, 8-a circulating pipe, 9-a first valve, 10-a second valve, 11-a third valve, 12-a flow sensor, 13-a circulating pump, 14-a front liquid storage tank, 15-a water suction pump, 16-a liquid storage tank, 17-an electrolytic tank, 18-a gas-liquid separator, 19-a purifying component, 20-a silica gel purifier, 21-a molecular sieve purifier, 22-a first water level monitor, 23-a fourth valve, 24-a second water level monitor, 25-a methane monitoring component and 26-a liquid level display device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a hydrogen generator and methane monitoring devices to solve the problem that prior art exists, can avoid hydrogen generator dry combustion method to damage, and reduce the unable normal operating of monitoring facilities and the incidence of damage.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example one
The present embodiment provides a hydrogen generator 100, as shown in fig. 1, in the present embodiment, the hydrogen generator 100 includes an electrolyzed water hydrogen production assembly 1 and a filter device 2, an input end of the filter device 2 is used for communicating with a water source 3, an output end of the filter device 2 is communicated with an input end of the electrolyzed water hydrogen production assembly 1, the filter device 2 can continuously provide deionized water for the electrolyzed water hydrogen production assembly 1, an input end of the filter device 2 is communicated with the water source 3, an output end of the filter device 2 is communicated with an input end of the electrolyzed water hydrogen production assembly 1, so that the filter device 2 can continuously provide deionized water for the electrolyzed water hydrogen production assembly 1, the consumption of deionized water in the hydrogen generator 100 can be avoided being over due to long-term unattended operation, dry burning damage of the hydrogen generator 100 can be avoided, the occurrence rate of damage due to abnormal operation of a monitoring device can be reduced, the input end of the filter device 2 is communicated with the water source 3 through a hose to ensure water tightness, the water source 3 may be a tap water supply.
Filter equipment 2 includes sand filter assembly 4, carbon filter assembly 5, safety filter assembly 6 and reverse osmosis assembly 7, sand filter assembly 4's input is used for communicating with water source 3, sand filter assembly 4's output and carbon filter assembly 5's input intercommunication, carbon filter assembly 5's output and safety filter assembly 6's input intercommunication, safety filter assembly 6's output and reverse osmosis assembly 7's input intercommunication, reverse osmosis assembly 7's output and electrolysis aquatic hydrogen production assembly 1's input intercommunication, sand filter assembly 4 holds back the suspended impurity of aquatic through granular filter material layers such as quartz sand, mainly to slight suspended solid, thereby make water obtain the clarification, inside filter material particle diameter generally is 0.5 ~ 1.2mm, filter material particle diameterThe diameters are sequentially arranged from top to bottom from thin to thick, and the sizes of pores in the filter layer are gradually increased from top to bottom; the filter material in the carbon filter component 5 is activated carbon, the activated carbon filter can adsorb residual chlorine which cannot be removed in the previous stage of filtration so as to prevent the subsequent stage reverse osmosis membrane from being oxidized and degraded, and meanwhile, the activated carbon filter also adsorbs pollutants such as micromolecular organic matters leaked from the previous stage, and has obvious adsorption and removal effects on peculiar smell, colloid, pigment, heavy metal ions and the like in water; the safety filter component 6 has the advantages that the inner filter material is a PP filter element with the diameter of 5 mu m, the PP filter element has the characteristics of large filter flow, large pollutant carrying capacity and small pressure loss, can block impurity particles with different particle sizes, and integrates surface filtration and deep filtration; the reverse osmosis component 7 is internally provided with a reverse osmosis membrane, the aperture of the reverse osmosis membrane is as small as nano level, and H is carried out under certain pressure2The O molecule may pass through the reverse osmosis membrane, while the impurities in the water source 3, such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses, etc., may not pass through the reverse osmosis membrane.
The hydrogen generator 100 further comprises a circulation pipe 8, a first valve 9, a second valve 10, a third valve 11, a flow sensor 12 and a circulation pump 13, the first valve 9 is arranged on an input pipe of the filtering device 2, the flow sensor 12 and the second valve 10 are arranged on a connection pipe between an output end of the filtering device 2 and an input end of the electrolyzed water hydrogen production assembly 1, the flow sensor 12 is positioned between the second valve 10 and the filtering device 2, one end of the circulation pipe 8 is communicated with the connection pipe between the first valve 9 and the filtering device 2, the other end of the circulation pipe 8 is communicated with the connection pipe between the second valve 10 and the flow sensor 12, the third valve 11 and the circulation pump 13 are arranged on the circulation pipe 8, the flow sensor 12 is electrically connected with the first valve 9, the second valve 10, the third valve 11 and the circulation pump, and the flow sensor 12 can control the first valve 9 and the second valve 10 to be closed and the third valve 11 and the circulation pump 13 to be opened to increase the circulation of filtered water The number of loop filtering times, generally, in order to ensure the purity of the outlet water of the filtering device 2, after the filtered water in the filtering device 2 is circulated for at least 3 times, the flow sensor 12 controls the first valve 9 and the second valve 10 to open, the third valve 11 and the circulating pump 13 to close, so that the filtered water in the filtering device 2 enters the hydrogen-generating assembly for electrolyzing water 1, and the water from the water source is supplemented into the filtering device 2 for one filtering cycle.
The hydrogen generator 100 further comprises a preposed liquid storage tank 14, the output end of the second valve 10 is communicated with the input end of the electrolyzed water hydrogen production assembly 1 through the preposed liquid storage tank 14, and the deionized water filtered by the filtering device 2 can be collected to play a role of buffering.
Hydrogen component 1 is produced to electrolysis water includes suction pump 15, the liquid storage pot 16, electrolytic bath 17, vapour and liquid separator 18 and purification unit 19, the subassembly is few, and simple structure, can directly produce pure hydrogen, the input of suction pump 15 and the output of leading liquid storage pot 14 communicate, the output of suction pump 15 and the input of liquid storage pot 16 communicate, the output of liquid storage pot 16 and electrolytic bath 17's input intercommunication, the hydrogen output of electrolytic bath 17 and vapour and liquid separator 18's input intercommunication, vapour and liquid separator 18's output and purification unit 19's input intercommunication, the bottom and the liquid level display device 26 intercommunication of liquid storage pot 16, can make things convenient for the water level height in the observation personnel direct observation liquid storage pot.
The purification component 19 comprises a silica gel purifier 20 and a molecular sieve purifier 21, wherein the input end of the silica gel purifier 20 is communicated with the output end of the gas-liquid separator 18, the output end of the silica gel purifier 20 is communicated with the input end of the molecular sieve purifier 21, the silica gel purifier 20 is used for drying hydrogen, and the molecular sieve purifier 21 is used for removing impurities in the hydrogen.
The hydrogen generator 100 further comprises a first water level monitor 22 and a fourth valve 23, the first water level monitor 22 is located in the front-mounted liquid storage tank 14, the fourth valve 23 is located on an input pipe of the filtering device 2, the first valve 9 is located between the fourth valve 23 and the filtering device 2, the first water level monitor 22 is electrically connected with the fourth valve 23, the first water level monitor 22 can control the opening and closing of the fourth valve 23 according to the water level in the front-mounted liquid storage tank 14, the opening and closing of the filtering device 2 can be automatically controlled, and the intelligence of the hydrogen generator 100 can be improved.
The hydrogen generator 100 further comprises a second water level monitor 24, the second water level monitor 24 is located in the liquid storage tank 16, the second water level monitor 24 is electrically connected with the circulating pump 13, the second water level monitor 24 can control the on-off of the circulating pump 13 according to the water level in the liquid storage tank 16, deionized water can be automatically supplemented into the liquid storage tank 16, and the hydrogen generator 100 is prevented from being damaged by dry burning.
The first valve 9, the second valve 10, the third valve 11 and the fourth valve 23 are all solenoid valves, which are easy to purchase and convenient to control by electric signals.
Example two
The embodiment provides a methane monitoring devices, as shown in fig. 1, in this embodiment, methane monitoring devices includes methane monitoring components 25 and hydrogen generator 100 in the embodiment one, the output of hydrogen component 1 is produced to the electrolysis water and the hydrogen input intercommunication of methane monitoring components 25, adopt filter equipment 2's input and 3 intercommunications in water source, filter equipment 2's output and the input intercommunication of hydrogen component 1 is produced to the electrolysis water, thereby filter equipment 2 can last to produce hydrogen component 1 for the electrolysis water and continuously provide deionized water, can avoid because of long-term unmanned guard, deionized water consumption in the hydrogen generator 100 is totally up, avoid hydrogen generator 100 dry combustion method to damage, and reduce the incidence that monitoring facilities can't normally operate and damage, be provided with the valve on filter equipment 2 and methane monitoring components 25's the connecting pipeline.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (10)

1. A hydrogen generator characterized by: the method comprises the following steps: hydrogen subassembly and filter equipment are produced to electrolysis water, filter equipment's input is used for communicating with the water source, filter equipment's output with hydrogen subassembly is produced to electrolysis water's input intercommunication, filter equipment can last for hydrogen subassembly is produced to electrolysis water provides deionized water.
2. The hydrogen generator of claim 1, wherein: the filtering device comprises a sand filtering assembly, a carbon filtering assembly, a security filtering assembly and a reverse osmosis assembly, wherein the input end of the sand filtering assembly is communicated with a water source, the output end of the sand filtering assembly is communicated with the input end of the carbon filtering assembly, the output end of the carbon filtering assembly is communicated with the input end of the security filtering assembly, the output end of the security filtering assembly is communicated with the input end of the reverse osmosis assembly, and the output end of the reverse osmosis assembly is communicated with the input end of the electrolyzed water hydrogen production assembly.
3. The hydrogen generator of claim 1, wherein: the water electrolysis hydrogen production assembly comprises a water electrolysis hydrogen production assembly, and is characterized by further comprising a circulating pipe, a first valve, a second valve, a third valve, a flow sensor and a circulating pump, wherein the first valve is arranged on an input pipe of the filtering device, the output end of the filtering device is connected with a connecting pipe of the input end of the water electrolysis hydrogen production assembly, the flow sensor and the second valve are arranged on the connecting pipe, the flow sensor is located between the second valve and the filtering device, one end of the circulating pipe is communicated with the connecting pipe between the first valve and the filtering device, the other end of the circulating pipe is communicated with the connecting pipe between the second valve and the flow sensor, the third valve and the circulating pump are arranged on the circulating pipe, the flow sensor is electrically connected with the first valve, the second valve, the third valve and the circulating pump, and the first valve and the second valve can be controlled by the flow sensor to be closed, and the third valve and the circulating pump can be opened The number of times of circulating filtration of the filtered water is increased.
4. The hydrogen generator of claim 3, wherein: the water electrolysis hydrogen production assembly is characterized by further comprising a preposed liquid storage tank, wherein the output end of the second valve is communicated with the input end of the water electrolysis hydrogen production assembly through the preposed liquid storage tank.
5. The hydrogen generator of claim 4, wherein: the electrolytic water hydrogen production component comprises a water suction pump, a liquid storage tank, an electrolytic cell, a gas-liquid separator and a purification component, wherein the input end of the water suction pump is communicated with the output end of the front liquid storage tank, the output end of the water suction pump is communicated with the input end of the liquid storage tank, the output end of the liquid storage tank is communicated with the input end of the electrolytic cell, the hydrogen output end of the electrolytic cell is communicated with the input end of the gas-liquid separator, and the output end of the gas-liquid separator is communicated with the input end of the purification component.
6. The hydrogen generator of claim 5, wherein: the purification assembly comprises a silica gel purifier and a molecular sieve purifier, the input end of the silica gel purifier is communicated with the output end of the gas-liquid separator, and the output end of the silica gel purifier is communicated with the input end of the molecular sieve purifier.
7. The hydrogen generator of claim 4, wherein: the filter device is characterized by further comprising a first water level monitor and a fourth valve, the first water level monitor is located in the front liquid storage tank, the fourth valve is located on an input pipe of the filter device, the first valve is located between the fourth valve and the filter device, the first water level monitor is electrically connected with the fourth valve, and the first water level monitor can control the fourth valve to be opened and closed according to the water level in the front liquid storage tank.
8. The hydrogen generator of claim 5, wherein: the water level monitoring device is characterized by further comprising a second water level monitor, the second water level monitor is located in the liquid storage tank and electrically connected with the water suction pump, and the second water level monitor can control opening and closing of the water suction pump according to the water level in the liquid storage tank.
9. The hydrogen generator of claim 7, wherein: the first valve, the second valve, the third valve and the fourth valve are all solenoid valves.
10. A methane monitoring device, characterized in that: the hydrogen generator comprises a methane monitoring assembly and the hydrogen generator as claimed in any one of claims 1 to 9, wherein the output end of the electrolyzed water hydrogen production assembly is communicated with the hydrogen input end of the methane monitoring assembly.
CN202120944007.4U 2021-05-06 2021-05-06 Hydrogen generator and methane monitoring device Expired - Fee Related CN215050732U (en)

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Application Number Priority Date Filing Date Title
CN202120944007.4U CN215050732U (en) 2021-05-06 2021-05-06 Hydrogen generator and methane monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120944007.4U CN215050732U (en) 2021-05-06 2021-05-06 Hydrogen generator and methane monitoring device

Publications (1)

Publication Number Publication Date
CN215050732U true CN215050732U (en) 2021-12-07

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Application Number Title Priority Date Filing Date
CN202120944007.4U Expired - Fee Related CN215050732U (en) 2021-05-06 2021-05-06 Hydrogen generator and methane monitoring device

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