阅读说明：本技术 一种氢或氢氧混合气体储供装置及其使用方法 (Hydrogen or hydrogen-oxygen mixed gas storage and supply device and using method thereof ) 是由 阎有花 原建光 张宝 武英 周少雄 于 2021-08-13 设计创作，主要内容包括：本发明提供一种氢或氢氧混合气体储供装置,储供装置包括氢气供给管路、氧气供给管路及混合气输送管路,氢气供给管路包括抽真空管路、排空管路、充氢管路和放氢管路,充氢管路包括：充氢主管路、以及与充氢主管路的末端连接的金属氢化物储氢瓶管路,金属氢化物储氢瓶管路的末端设置有金属氢化物储氢瓶组单元；放氢管路,始端与金属氢化物储氢瓶组单元连接,末端与混合气输送管路连接；抽真空管路一端与金属氢化物储氢瓶管路的始端连接；排空管路一端与金属氢化物储氢瓶管路的始端连接；氧气供给管路末端与混合气输送管路连接。本发明的储供装置是一种高安全固态储氢为氢源的氢氧呼吸机和吸氢机,可实现不同混合比例的氢氧混合气呼吸和纯氢呼吸。(The invention provides a hydrogen or mixed gas of oxygen and hydrogen storage and supply device, store and supply the device and include hydrogen supply line, oxygen supply line and mixed gas conveying line, the hydrogen supply line includes the evacuation pipeline, empties the pipeline, fills the hydrogen pipeline and puts the hydrogen pipeline, fills the hydrogen pipeline and includes: the device comprises a main hydrogen charging pipeline and a metal hydride hydrogen storage bottle pipeline connected with the tail end of the main hydrogen charging pipeline, wherein a metal hydride hydrogen storage bottle group unit is arranged at the tail end of the metal hydride hydrogen storage bottle pipeline; the initial end of the hydrogen discharge pipeline is connected with the metal hydride hydrogen storage cylinder group unit, and the tail end of the hydrogen discharge pipeline is connected with the mixed gas conveying pipeline; one end of the vacuumizing pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline; one end of the emptying pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline; the tail end of the oxygen supply pipeline is connected with the mixed gas conveying pipeline. The storage and supply device is an oxyhydrogen breathing machine and a hydrogen absorption machine which take high-safety solid hydrogen storage as hydrogen sources, and can realize the respiration of oxyhydrogen mixed gas and pure hydrogen with different mixing ratios.)

1. A hydrogen or hydrogen-oxygen mixed gas storage and supply device is characterized by comprising a hydrogen supply pipeline, an oxygen supply pipeline and a mixed gas conveying pipeline, wherein,

the hydrogen gas supply line includes: a vacuum pumping pipeline, an emptying pipeline, a hydrogen charging pipeline and a hydrogen discharging pipeline, wherein,

the hydrogen charging line includes: the device comprises a main hydrogen charging pipeline and a metal hydride hydrogen storage bottle pipeline connected with the tail end of the main hydrogen charging pipeline, wherein a metal hydride hydrogen storage bottle group unit is arranged at the tail end of the metal hydride hydrogen storage bottle pipeline, and the hydrogen charging pipeline is used for storing hydrogen and providing hydrogen;

the initial end of the hydrogen discharge pipeline is connected with the metal hydride hydrogen storage cylinder group unit, and the tail end of the hydrogen discharge pipeline is connected with the mixed gas conveying pipeline;

one end of the vacuumizing pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline and is used for vacuumizing the metal hydride hydrogen storage bottle group unit;

one end of the evacuation pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline and is used for evacuating gas in the metal hydride hydrogen storage bottle group unit;

and the tail end of the oxygen supply pipeline is connected with the mixed gas conveying pipeline.

2. The hydrogen or hydrogen-oxygen mixed gas storage and supply device according to claim 1, wherein a high-pressure hydrogen storage cylinder group is provided at the beginning of the main hydrogen charging line, and a first needle valve, a ball valve, a filter, a first electromagnetic valve, a first pressure sensor, a check valve, a first pressure gauge and a first pressure reducing valve are provided on the main hydrogen charging line in this order from the beginning;

preferably, the high-pressure hydrogen storage cylinder group comprises two high-pressure hydrogen storage cylinders which are arranged in parallel, the number of the first needle valves is two, and the two first needle valves are correspondingly arranged at the outlets of the two high-pressure hydrogen storage cylinders.

3. The hydrogen or hydrogen-oxygen mixed gas storage and supply device according to claim 2, wherein a second solenoid valve, a second pressure sensor, a second pressure gauge, a first flow meter and a second needle valve are sequentially arranged on the pipe of the metal hydride hydrogen storage cylinder from the beginning end thereof, and the second needle valve is located at the outlet of the metal hydride hydrogen storage cylinder group unit and is used for opening or closing the metal hydride hydrogen storage cylinder group unit;

preferably, a pipeline between the first flow meter and the second needle valve is an elastic connecting pipeline.

4. The hydrogen or hydrogen-oxygen mixed gas storage and supply device according to claim 3, wherein the metal hydride hydrogen storage cylinder group unit comprises a plurality of metal hydride hydrogen storage cylinders, a plurality of metal hydride hydrogen storage cylinder pipelines are correspondingly arranged, a plurality of metal hydride hydrogen storage cylinder pipelines are arranged in parallel, and one metal hydride hydrogen storage cylinder is correspondingly arranged at the tail end of each metal hydride hydrogen storage cylinder pipeline;

one of the metal hydride hydrogen storage bottles is connected with the initial end of the hydrogen discharge pipeline.

5. A hydrogen or hydrogen-oxygen mixed gas storage and supply apparatus as claimed in any one of claims 1 to 4, wherein a vacuum pump is provided at the other end of said evacuation line, and a vacuum gauge, a third needle valve, a third pressure gauge and a safety valve are provided in said evacuation line in this order from the vacuum pump end.

6. A hydrogen or hydrogen-oxygen mixed gas storage and supply device as claimed in claim 5, wherein a flame arrester is provided at the other end of the evacuation line, and a fourth needle valve is provided on the evacuation line.

7. The hydrogen or hydrogen-oxygen mixed gas storage and supply device according to claim 1, wherein a fifth needle valve and a second flow meter are provided on the hydrogen discharge line in this order from the beginning thereof, and the fifth needle valve is provided at or near the outlet of the metal hydride hydrogen storage cylinder unit.

8. A hydrogen or hydrogen-oxygen mixed gas storage and supply apparatus as claimed in any one of claims 1 to 7, wherein an oxygen cylinder is provided at a starting end of said oxygen supply line, and a sixth needle valve, a second pressure reducing valve and a third flow meter are provided in this order from the starting end of said oxygen supply line.

9. The hydrogen or hydrogen-oxygen mixed gas storage and supply device according to any one of claims 1 to 7, wherein a gas mixing chamber is provided at the beginning of the mixed gas delivery line, the gas mixing chamber being connected to the end of the oxygen gas supply line and to the end of the hydrogen discharge line for receiving and mixing the gases from the hydrogen discharge line and the oxygen gas supply line;

the gas mixture conveying pipeline is sequentially provided with a seventh needle valve, a third pressure reducing valve and a fourth flowmeter from the beginning end of the gas mixture conveying pipeline, and the tail end of the gas mixture conveying pipeline is provided with a gas suction cover.

10. A method of using the hydrogen or hydrogen-oxygen mixed gas storage and supply device according to any one of claims 1 to 9, comprising the steps of:

step S1, a vacuumizing pipeline is adopted to vacuumize the metal hydride hydrogen storage cylinder group unit;

step S2, a hydrogen charging pipeline is adopted to perform hydrogen charging treatment on the metal hydride hydrogen storage cylinder group unit;

step S3, evacuation treatment is carried out on the metal hydride hydrogen storage cylinder group unit by an evacuation pipeline;

step S4, repeating step S1, step S2 and step S3, and circulating for more than two times to activate the metal hydride hydrogen storage cylinder unit;

step S5, flow detection is carried out on the metal hydride hydrogen storage cylinder group unit after activation treatment;

step S6, a hydrogen discharge pipeline is adopted to perform hydrogen discharge treatment on the metal hydride hydrogen storage cylinder group unit, and hydrogen is discharged into a gas mixing chamber of a gas mixing conveying pipeline;

step S7, conveying oxygen to the gas mixing chamber of the gas mixing conveying pipeline by adopting an oxygen supply pipeline to obtain hydrogen and oxygen mixed gas;

and step S8, conveying the hydrogen-oxygen mixture by using a mixture conveying pipeline.

Technical Field

The invention belongs to the technical field of hydrogen storage and supply, and particularly relates to a hydrogen or oxyhydrogen mixed gas storage and supply device and a using method thereof.

Background

Hydrogen is the simplest element in nature, and hydrogen is a diatomic gas which is colorless, odorless, tasteless, and somewhat reducing. Hydrogen elements account for about 90% of the composition of substances in the universe, and can be said to be the most basic chemical elements in the universe. With the continuous development and perfection of hydrogen molecule medicine, people accept that: 1. hydrogen has anti-inflammatory effect; 2. hydrogen molecules have an antioxidant effect in vivo. It has been found that hydrogen can treat more than 70 kinds of diseases, and has protective effects on diseases such as inflammation or allergy of almost all organs.

Oxidative damage and inflammation are considered as the basis for the development of a variety of diseases. By selective oxidation, it is meant that hydrogen can neutralize excess free radicals harmful to the body without affecting the process of operation of other important substances. Hydrogen sorption therapy is known in the industry as hydrogen medicine. Hydrogen is a selective antioxidant molecule, and firstly has strong biosafety, and even if a very high dosage is used, the hydrogen does not cause harm to people and organisms, so that the hydrogen provides dosage selection width for treating diseases by using hydrogen in an antioxidant way, provides dosage selection width for realizing effectiveness, and provides the possibility of providing more dosage for realizing effectiveness. Secondly, the hydrogen has super strong diffusion capacity, and particularly in a biological system, the hydrogen can not be prevented from diffusing and permeating in any organ, any cell, any intracellular structure and any biological macromolecule of an organism.

Hydrogen molecules are widely regarded for their strong antioxidant action, in particular their high selectivity (neutralization of only toxic reactive oxygen radicals), high dispersibility and high safety.

The hydrogen-oxygen breathing machine is an instrument which can ensure that hydrogen can be completely inhaled by a human body without leaking in the air so as to safely breathe oxygen and hydrogen. The oxyhydrogen gas atomizing respirator is three types of respiratory medical equipment listed as 'national innovation' by the national drug administration in 3 months in 2017, is approved by the drug administration in 2 months in 2020, is approved to be listed as three types of medical equipment, and is brought into epidemic prevention and control key guarantee materials after being listed. The device can generate 3 liters of hydrogen-oxygen mixed gas per minute for human body inhalation, the effect of enhancing gas dispersion and flow by inhaling the hydrogen-oxygen mixed gas is utilized, and meanwhile, the hydrogen can also have the effects of resisting inflammation, effectively preventing airway reconstruction and pulmonary fibrosis, reducing goblet cell hyperplasia, improving lung function, resisting side effect after large dose hormone use, eliminating free radicals generated in large quantity due to lung injury after viruses invade the body and the like.

At present, the hydrogen-oxygen hybrid oxyhydrogen machine adopts the water electrolysis method to produce hydrogen, but the hydrogen-oxygen hybrid gas collects the hydrogen and oxygen which are decomposed by water (the hydrogen accounts for 66%). Pure hydrogen is obtained by separating oxygen as a byproduct by a hydrogen-oxygen separation technology through a hydrogen absorber and discharging the oxygen into the air, so that the hydrogen with sufficient purity (the hydrogen accounts for more than 99 percent). Most of the hydrogen flow of the oxyhydrogen atomizer is controlled within the range of 0.3L/min-1L/min, the flow is small, and the water quality requires pure water or distilled water. The hydrogen production by water electrolysis requires power supply, and obviously, the hydrogen supply cannot be ensured in the field or remote areas without power supply.

Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.

Disclosure of Invention

The invention aims to provide a hydrogen or hydrogen-oxygen mixed gas storage and supply device and a using method thereof, which aim to solve the problem that hydrogen supply cannot be ensured in the field or in remote areas without power supply for hydrogen production by water electrolysis at present.

In order to achieve the above purpose, the invention provides the following technical scheme:

a hydrogen or hydrogen-oxygen mixture gas storage and supply device comprising a hydrogen gas supply line, an oxygen gas supply line, and a mixture gas delivery line, wherein the hydrogen gas supply line comprises: evacuation pipeline, hydrogen charging pipeline and hydrogen discharge pipeline, wherein, the hydrogen charging pipeline includes: the device comprises a main hydrogen charging pipeline and a metal hydride hydrogen storage bottle pipeline connected with the tail end of the main hydrogen charging pipeline, wherein a metal hydride hydrogen storage bottle group unit is arranged at the tail end of the metal hydride hydrogen storage bottle pipeline, and the hydrogen charging pipeline is used for storing hydrogen and providing hydrogen; the initial end of the hydrogen discharge pipeline is connected with the metal hydride hydrogen storage cylinder group unit, and the tail end of the hydrogen discharge pipeline is connected with the mixed gas conveying pipeline; one end of the vacuumizing pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline and is used for vacuumizing the metal hydride hydrogen storage bottle group unit; one end of the evacuation pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline and is used for evacuating gas in the metal hydride hydrogen storage bottle group unit; and the tail end of the oxygen supply pipeline is connected with the mixed gas conveying pipeline.

According to the hydrogen or oxyhydrogen mixed gas storage and supply device, as a preferred scheme, a high-pressure hydrogen storage cylinder group is arranged at the starting end of the hydrogen charging main pipeline, and a first needle valve, a ball valve, a filter, a first electromagnetic valve, a first pressure sensor, a one-way valve, a first pressure gauge and a first pressure reducing valve are sequentially arranged on the hydrogen charging main pipeline from the starting end of the hydrogen charging main pipeline.

As a more preferable scheme, the high-pressure hydrogen storage cylinder group comprises two high-pressure hydrogen storage cylinders which are arranged in parallel, the number of the first needle valves is two, and the two first needle valves are correspondingly arranged at the outlets of the two high-pressure hydrogen storage cylinders.

As a preferred scheme, the hydrogen or hydrogen-oxygen mixed gas storage and supply device is characterized in that a second electromagnetic valve, a second pressure sensor, a second pressure gauge, a first flow meter and a second needle valve are sequentially arranged on the pipeline of the metal hydride hydrogen storage cylinder from the beginning end of the pipeline, and the second needle valve is located at an outlet of the metal hydride hydrogen storage cylinder group unit and used for opening or closing the metal hydride hydrogen storage cylinder group unit.

More preferably, the pipeline between the first flow meter and the second needle valve is an elastic connecting pipeline.

As a preferred scheme, the metal hydride hydrogen storage cylinder group unit comprises a plurality of metal hydride hydrogen storage cylinders, a plurality of metal hydride hydrogen storage cylinder pipelines are correspondingly arranged, the plurality of metal hydride hydrogen storage cylinder pipelines are arranged in parallel, and one metal hydride hydrogen storage cylinder is correspondingly arranged at the tail end of each metal hydride hydrogen storage cylinder pipeline; one of the metal hydride hydrogen storage bottles is connected with the initial end of the hydrogen discharge pipeline.

According to the hydrogen or oxyhydrogen mixed gas storage and supply device, as a preferable scheme, a vacuum pump is arranged at the other end of the vacuumizing pipeline, and a vacuum meter, a third needle valve, a third pressure meter and a safety valve are sequentially arranged on the vacuumizing pipeline from the vacuum pump end.

According to the hydrogen or hydrogen-oxygen mixed gas storage and supply device, as a preferable scheme, the other end of the emptying pipeline is provided with a flame arrester, and the emptying pipeline is further provided with a fourth needle valve.

In the hydrogen or hydrogen-oxygen mixed gas storage and supply device, preferably, a fifth needle valve and a second flow meter are sequentially arranged on the hydrogen discharge pipeline from the beginning end, and the fifth needle valve is arranged at or near the outlet of the metal hydride hydrogen storage cylinder group unit.

In the hydrogen or hydrogen-oxygen mixed gas storage and supply device, preferably, an oxygen cylinder is provided at a start end of the oxygen supply line, and a sixth needle valve, a second pressure reducing valve, and a third flow meter are provided in this order from the start end of the oxygen supply line.

In the hydrogen or oxyhydrogen gas storage and supply device, preferably, a gas mixing chamber is arranged at the beginning of the gas mixture conveying pipeline, connected with the end of the oxygen supply pipeline and the end of the hydrogen discharge pipeline, and used for receiving and mixing the gases from the hydrogen discharge pipeline and the oxygen supply pipeline; the gas mixture conveying pipeline is sequentially provided with a seventh needle valve, a third pressure reducing valve and a fourth flowmeter from the beginning end of the gas mixture conveying pipeline, and the tail end of the gas mixture conveying pipeline is provided with a gas suction cover.

The invention also provides a use method of the hydrogen or hydrogen-oxygen mixed gas storage and supply device, which comprises the following steps:

step S1, a vacuumizing pipeline is adopted to vacuumize the metal hydride hydrogen storage cylinder group unit;

step S2, a hydrogen charging pipeline is adopted to perform hydrogen charging treatment on the metal hydride hydrogen storage cylinder group unit;

step S3, evacuation treatment is carried out on the metal hydride hydrogen storage cylinder group unit by an evacuation pipeline;

step S4, repeating step S1, step S2 and step S3, and circulating for more than two times to activate the metal hydride hydrogen storage cylinder unit;

step S5, flow detection is carried out on the metal hydride hydrogen storage cylinder group unit after activation treatment;

step S6, a hydrogen discharge pipeline is adopted to perform hydrogen discharge treatment on the metal hydride hydrogen storage cylinder group unit, and hydrogen is discharged into a gas mixing chamber of a gas mixing conveying pipeline;

step S7, conveying oxygen to the gas mixing chamber of the gas mixing conveying pipeline by adopting an oxygen supply pipeline to obtain hydrogen and oxygen mixed gas;

and step S8, conveying the hydrogen-oxygen mixture by using a mixture conveying pipeline.

Has the advantages that:

1. the hydrogen or oxyhydrogen mixed gas storage and supply device provided by the invention is an oxyhydrogen breathing machine and a hydrogen absorption machine which take high-safety solid hydrogen storage as a hydrogen source, and not only meets the breathing of the oxyhydrogen mixed gas with different flow proportions, but also meets the requirement of the hydrogen absorption machine that a metal hydride hydrogen storage bottle supplies high-purity hydrogen independently.

2. The invention adopts high-safety and low-pressure metal hydride hydrogen storage as hydrogen source supply, compared with the hydrogen source supply provided by water electrolysis hydrogen production, the metal hydride hydrogen storage and supply technology has the advantages of safety, low pressure, simple use method, safety and reliability, and is particularly suitable for hospitals, families, fields or remote areas without power supply.

3. According to the hydrogen-oxygen breathing machine and the hydrogen absorption machine with high safety and using solid hydrogen storage as hydrogen sources, the solid hydrogen storage bottle can realize online vacuumizing, activation, hydrogen charging and emptying, resources are saved, and the cost is reduced. The hydrogen or hydrogen-oxygen mixed gas storage and supply device can also be directly used for filling hydrogen into metal hydride hydrogen storage bottles, thereby meeting the standby requirements of a plurality of metal hydride hydrogen storage bottles.

4. In the hydrogen or hydrogen-oxygen mixed gas storage and supply device provided by the invention, the gas mixing chamber is a junction of the hydrogen supply pipeline, the oxygen supply pipeline and the mixed gas conveying pipeline. When mixed gas with different proportions is needed, the hydrogen discharging pipeline and the oxygen supplying pipeline can be controlled and adjusted, so that the accurate control of the mixed gas is realized; when only pure hydrogen supply is needed, the oxygen supply pipeline is closed, and only the hydrogen discharge pipeline is opened; when the hydrogen supply is insufficient, a hydrogen supply pipeline is opened to fill the metal hydride hydrogen storage bottle with hydrogen; when in emergency or in field, the spare metal hydride hydrogen storage bottle, oxygen bottle and mixed gas pipeline can be carried only to ensure the supply of hydrogen and oxygen and the absorption of hydrogen.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:

FIG. 1 is a schematic view of a hydrogen or hydrogen-oxygen mixed gas storage and supply device according to an embodiment of the present invention.

Reference numerals: t is₀，T₁A high pressure hydrogen storage bottle; 1, 2, a first needle valve; 3. a ball valve; 4. a filter; 5. a first solenoid valve; 6. a first pressure sensor; 7. a one-way valve; 8. a first pressure gauge; 9. a first pressure reducing valve; 10, 14, 18, a second solenoid valve; 11, 15, 19, a second pressure sensor; 12, 16, 20 and a second pressure gauge; 13, 17, 21, a first flow meter; 22, 23, 24, a second needle valve; l is₁，L₂，L₃The elastic connecting pipeline; s₀、S₁、S₂Metal hydride hydrogen storage bottles; 25. a safety valve; 26. A third pressure sensor, 27, a third needle valve; 28. a vacuum gauge; 29. a vacuum pump; 30. a fourth needle valve; 31. a flame arrestor; 32. a fifth needle valve; 33. a second flow meter; 34. a sixth needle valve; 35. a second pressure reducing valve; 36. a third flow meter; 37. a seventh needle valve; 38. a third pressure reducing valve; 39. a fourth flow meter; 40. an air intake cover; t is₃An oxygen cylinder; t is₄And a gas mixing chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

The present invention will be described in detail with reference to examples. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The hydrogen or oxyhydrogen mixed gas storage and supply device provided by the invention is an oxyhydrogen breathing machine and a hydrogen absorption machine which take high-safety solid hydrogen storage as hydrogen sources, and can realize the respiration of oxyhydrogen mixed gas and pure hydrogen with different mixing ratios. The hydrogen source supply adopts a metal hydride hydrogen storage bottle with low pressure, safety and high volume hydrogen storage density, can realize multiple functions of on-line vacuum pumping, on-line activation, on-line emptying and hydrogen absorption and release of the metal hydride hydrogen storage bottle, and ensures single bottle hydrogen source supply and multi-bottle hydrogen source group standby. Not only meets the respiration of the hydrogen-oxygen mixed gas with different flow proportions, but also meets the requirement of the hydrogen absorption machine that the metal hydride hydrogen storage bottle supplies high-purity hydrogen independently.

It should be noted that, under certain temperature and pressure conditions, these metals can "absorb" hydrogen in large quantities, react to form metal hydride, and release heat. Thereafter, these metal hydrides are heated, which in turn decompose and release the hydrogen stored therein. These metals that "absorb" hydrogen gas are called hydrogen storage alloys, and at present, there are mainly titanium-based hydrogen storage alloys, zirconium-based hydrogen storage alloys, iron-based hydrogen storage alloys, and rare earth-based hydrogen storage alloys. The metal hydride hydrogen storage bottle is characterized in that the hydrogen storage alloy is arranged in the hydrogen storage bottle in a certain mode, the hydrogen storage alloy absorbs hydrogen to form metal hydride by utilizing the reversible hydrogen absorption and desorption capacity of the hydrogen storage alloy, the hydrogen storage density is high, the hydrogen storage pressure is low, the supply of hydrogen of a hydrogen-oxygen hybrid oxyhydrogen machine and a hydrogen absorption machine can be guaranteed, and the hydrogen storage alloy has the hydrogen purification function, so that the purity of released hydrogen is 99.999 percent after 99.99 percent of hydrogen is absorbed and purified by the hydrogen storage material.

The invention adopts the hydrogen storage and supply technology of metal hydride, is safe, low-voltage, simple in use method, safe and reliable, and is particularly suitable for hospitals, families, fields or remote areas without power supply.

As shown in fig. 1, in an embodiment of the present invention, the hydrogen or hydrogen-oxygen mixed gas storage and supply device includes a hydrogen supply pipeline, an oxygen supply pipeline, and a mixed gas delivery pipeline, wherein the hydrogen supply pipeline includes a vacuum pumping pipeline, an evacuation pipeline, a hydrogen charging pipeline, and a hydrogen discharge pipeline, and the hydrogen charging pipeline includes: the hydrogen storage device comprises a main hydrogen charging pipeline and a metal hydride hydrogen storage bottle pipeline connected with the tail end of the main hydrogen charging pipeline, wherein a metal hydride hydrogen storage bottle group unit is arranged at the tail end of the metal hydride hydrogen storage bottle pipeline, and the hydrogen charging pipeline is used for storing hydrogen and providing hydrogen; the initial end of the hydrogen discharge pipeline is connected with the metal hydride hydrogen storage cylinder group unit, and the tail end of the hydrogen discharge pipeline is connected with the mixed gas conveying pipeline; one end of the vacuumizing pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline and is used for vacuumizing the metal hydride hydrogen storage bottle group unit; one end of the evacuation pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline and is used for evacuating gas in the metal hydride hydrogen storage bottle group unit; the tail end of the oxygen supply pipeline is connected with the mixed gas conveying pipeline.

The gas mixing chamber in the gas mixture conveying pipeline is a junction of the hydrogen supply pipeline, the oxygen supply pipeline and the gas mixture conveying pipeline. When mixed gas with different proportions is needed, the hydrogen discharging pipeline and the oxygen supplying pipeline can be controlled and adjusted, so that the accurate control of the mixed gas is realized; when only pure hydrogen supply is needed, the oxygen supply pipeline is closed, and only the hydrogen discharge pipeline is opened; when the hydrogen supply is insufficient, a hydrogen supply pipeline is opened to fill the metal hydride hydrogen storage bottle with hydrogen; when in emergency or in field, the spare metal hydride hydrogen storage bottle, oxygen bottle and mixed gas pipeline can be carried only to ensure the supply of hydrogen and oxygen and the absorption of hydrogen.

As shown in fig. 1, in the embodiment of the present invention, a high-pressure hydrogen storage cylinder group is disposed at the beginning of a main hydrogen charging pipeline, and a first needle valve 1, a ball valve 3, a filter 4, a first electromagnetic valve 5, a first pressure sensor 6, a check valve 7, a first pressure gauge 8 and a first pressure reducing valve 9 are sequentially disposed on the main hydrogen charging pipeline from the beginning thereof.

The main function of the hydrogen charging pipeline is to perform hydrogen charging treatment on the metal hydride hydrogen storage cylinder group unit, so that the activation requirement of the hydrogen storage cylinder is ensured on one hand, and the repeated filling requirement of a single or standby hydrogen storage cylinder after the activated metal hydride hydrogen storage cylinder is emptied or discharged is ensured on the other hand.

In a preferred embodiment of the present invention, as shown in fig. 1, the high pressure hydrogen storage cylinder group comprises two high pressure hydrogen storage cylinders arranged in parallel, two first needle valves are arranged, and the two first needle valves are correspondingly arranged at outlets of the two high pressure hydrogen storage cylinders. The two high-pressure hydrogen storage bottles are respectively a high-pressure hydrogen storage bottle T₀And a high-pressure hydrogen storage cylinder T₁Wherein the high pressure hydrogen storage cylinder T₁For the standby high-pressure hydrogen storage bottle, a first needle valve 1 of the two first needle valves is arranged on the high-pressure hydrogen storage bottle T₀At the outlet of the first needle valve 2, the first needle valve is arranged in a standby high-pressure hydrogen storage bottle T₁At the outlet of (2). So arranged, in the high-pressure hydrogen storage bottle T₀When a fault occurs, a standby high-pressure hydrogen storage bottle T can be adopted₁The work effectively ensures the smooth work of the hydrogen charging pipeline.

In the embodiment of the present invention, as shown in fig. 1, the pipeline of the metal hydride hydrogen storage cylinder is sequentially provided with a second electromagnetic valve 10, a second pressure sensor 11, a second pressure gauge 12, a first flow meter 13 and a second needle valve 24 from the beginning, and the second needle valve 24 is located at the outlet of the metal hydride hydrogen storage cylinder unit and is used for opening or closing the metal hydride hydrogen storage cylinder unit.

In the preferred embodiment of the present invention, the line between the first flow meter 13 and the second needle valve 24 is an elastic connection line L₃The elastic connecting pipeline is arranged, so that the hydrogen storage bottle can be conveniently replaced, and if the hard connecting pipeline is adopted, the pipeline is easily bent due to frequent bottle replacement, so that the pipeline is damaged.

It can be understood that the hydrogen charging pipeline of the invention consists of a main hydrogen charging pipeline and a metal hydride hydrogen storage bottle pipeline, wherein the tail end of the main hydrogen charging pipeline is connected with the initial end of the metal hydride hydrogen storage bottle pipeline, and the initial end of the main hydrogen charging pipeline is provided with a high-pressure hydrogen storage bottle group T₀A first needle valve 1, a ball valve 3, a filter 4, a first electromagnetic valve 5, a first pressure sensor 6, a one-way valve 7, a first pressure gauge 8 and a first pressure reducing valve 9 are sequentially arranged from the beginning end of the valve; the tail end of the metal hydride hydrogen storage bottle pipeline is provided with a metal hydride hydrogen storage bottle group unit, and a second electromagnetic valve 10, a second pressure sensor 11, a second pressure gauge 12, a first flow meter 13 and a second needle valve 24 are sequentially arranged from the beginning end of the metal hydride hydrogen storage bottle pipeline, and the second needle valve 24 is arranged at the outlet of the metal hydride hydrogen storage bottle group unit.

In the preferred embodiment of the invention, the metal hydride hydrogen storage cylinder group unit comprises a plurality of metal hydride hydrogen storage cylinders, a plurality of metal hydride hydrogen storage cylinder pipelines are correspondingly arranged, the plurality of metal hydride hydrogen storage cylinder pipelines are arranged in parallel, and the tail end of each metal hydride hydrogen storage cylinder pipeline is correspondingly provided with one metal hydride hydrogen storage cylinder; one of the metal hydride hydrogen storage bottles is connected with a hydrogen discharge pipeline.

As shown in fig. 1, in the embodiment of the present invention, the three groups of metal hydride hydrogen storage cylinder units arranged in parallel comprise three branches, i.e. three metal hydride hydrogen storage cylinder pipelines, which are respectively a branch 1, a branch 2 and a branch 3, wherein the branch 1, the branch 2 and the branch 3 are arranged in parallel, and the starting ends thereof are all connected to the end of the main hydrogen charging pipeline. Wherein, the branch 1 is provided with a second electromagnetic valve 10, a second pressure sensor 11, a second pressure gauge 12, a first flowmeter 13 and a second needle valve 24 in sequence from the beginning end, and the tail end of the branch 1 is provided with a metal hydride hydrogen storage bottle S₂The line between the first flow meter 13 and the second needle valve 24 is an elastic connecting line L₃(ii) a The branch 2 is provided with a second electromagnetic valve 14, a second pressure sensor 15, a second pressure gauge 16, a first flowmeter 17 and a second needle valve 23 in sequence from the beginning end, and the tail end of the branch 2 is provided with a metal hydride hydrogen storage bottle S₁The pipe line between the first flow meter 17 and the second needle valve 23 is an elastic connecting pipe line L₂. The branch 3 is provided with a second electromagnetic valve 18, a second pressure sensor 19, a second pressure gauge 20, a first flowmeter 21 and a second needle valve 22 in sequence from the beginning end, and the tail end of the branch 3 is provided with a metal hydride hydrogen storage bottle S₀The pipeline between the first flow meter 21 and the second needle valve 22 is an elastic connecting pipeline L₁. Metal hydride hydrogen storage bottle S at end of branch 3₀Is connected with the initial end of the hydrogen discharge pipeline. The invention adopts three branches, wherein a branch 3 is a hydrogen source supply end, and a metal hydride hydrogen storage bottle S in a branch 1₂And a metal hydride hydrogen storage bottle S in branch 2₁Once the hydrogen storage bottle S in branch 3 is supplied for backup hydrogen source₀When the hydrogen is exhausted, the hydrogen storage bottle S₂And S₁Replaceable hydrogen storage bottle S as a spare hydrogen bottle₀And the supply of hydrogen source is ensured.

It should be noted that the metal hydride hydrogen storage cylinder S at the end of the branch 1 may be used₂A metal hydride hydrogen storage bottle S connected to the beginning of the hydrogen discharge pipeline or the tail end of the branch 2₁The metal hydride hydrogen storage bottle is connected with the initial end of the hydrogen discharge pipeline, and the metal hydride hydrogen storage bottle connected with the initial end of the hydrogen discharge pipeline can be determined according to actual conditions during actual operation.

As shown in fig. 1, in the embodiment of the present invention, a vacuum pump 29 is disposed at the other end of the evacuation line, and a vacuum gauge 28, a third needle valve 27, a third pressure gauge 26 and a safety valve 25 are disposed on the evacuation line in this order from the vacuum pump end. The main function of the vacuumizing pipeline is to vacuumize the metal hydride hydrogen storage cylinder group unit so as to remove the oxide and impurities on the surface of the metal hydride hydrogen storage material.

In the embodiment of the invention shown in fig. 1, a flame arrester 31 is provided at the other end of the evacuation line, and a fourth needle valve 30 is provided on the evacuation line. The main function of the evacuation pipeline is to evacuate the metal hydride hydrogen storage cylinder group unit.

In the embodiment of the present invention, as shown in fig. 1, a fifth needle valve 32 and a second flow meter 33 are sequentially disposed on the hydrogen discharge pipe from the beginning, and the fifth needle valve 32 is disposed at or near the outlet of the metal hydride hydrogen storage cylinder unit.

In this embodiment, the metal hydride hydrogen storage bottle S at the beginning of the hydrogen discharge pipeline and the end of the branch 3₀Attached, with the fifth needle valve 32 adjacent the metal hydride hydrogen storage cylinder S₀Is provided, and the second flow meter 33 is a mass flow meter. The main function of the hydrogen discharge pipeline is to store hydrogen in the metal hydride hydrogen storage bottle S₀Discharging hydrogen to the gas mixing chamber T under the condition of accurately controlling the proportion₄In the process, stable operation is achieved, and a hydrogen source is supplied.

As shown in FIG. 1, in the embodiment of the present invention, an oxygen cylinder T is provided at the beginning of the oxygen supply line₃The oxygen supply line is provided with a sixth needle valve 34, a second pressure reducing valve 35, and a third flow meter 36 in this order from the beginning. The third flow meter 36 is a mass flow meter, and the main function of the oxygen supply line is to discharge oxygen to the gas mixing chamber T under the required condition of accurate proportional control of high purity oxygen₄In the process, stable operation is achieved, and an oxygen source is supplied.

As shown in FIG. 1, in the embodiment of the present invention, a gas mixing chamber T is arranged at the beginning of the gas mixture conveying pipeline₄Gas mixing chamber T₄Is connected with the tail end of the oxygen supply pipeline and the tail end of the hydrogen discharge pipeline; mixed gas conveying pipelineA seventh needle valve 37, a third pressure reducing valve 38 and a fourth flow meter 39 are provided in this order from the start end, and a suction hood 40 is provided at the end of the mixture gas delivery line. Here the gas mixing chamber T₄Is the junction of a hydrogen supply pipeline, an oxygen supply pipeline and a mixed gas conveying pipeline, is used for receiving and mixing the gases from a hydrogen discharge pipeline and an oxygen supply pipeline, and is a gas mixing chamber T₄The gas in the reactor is a mixed gas of hydrogen and oxygen.

In order to further understand the hydrogen or hydrogen-oxygen mixed gas storage and supply device, the invention also provides a use method of the hydrogen or hydrogen-oxygen mixed gas storage and supply device.

The test of the invention is based on the standard that the purity of hydrogen gas meets the requirement of high-purity hydrogen in GB/T3634.2-2011; the test instrument and equipment are qualified according to the general regulations in the field and are within the validity period of the test; the precision of the hydrogen mass flow controller is not lower than +/-minus or plus (1% Rdg +0.2F.S), and the repeatability is not lower than 0.2% F.S.; the pressure sensor precision should not be less than ± 0.5% f.s.; the limit pressure of the vacuum pump is lower than 10^-2mbar. During the test, the invention has a certain repeated operation to ensure the rigor of the test.

In the embodiment of the invention, the use method of the hydrogen or hydrogen-oxygen mixed gas storage and supply device comprises the following steps:

and step S1, vacuumizing the metal hydride hydrogen storage cylinder group unit by adopting a vacuumizing pipeline. Wherein, the metal hydride hydrogen storage bottle S at the end of the branch 1₂The vacuum-pumping treatment mode is that the vacuum-pumping pipeline and all ball valves and needle valves on the three branches are in a closed state, the vacuum pump 29 is started, and the third needle valve 27, the second needle valve 24 and the metal hydride hydrogen storage bottle S are opened₂The bottle mouth valve can realize the metal hydride hydrogen storage bottle S at the tail end of the branch 1₂And vacuumizing for at least 12 hours. Closing the hydrogen storage bottles S in sequence after the vacuum pumping is finished₂A bottle neck valve, a second needle valve 24, a third needle valve 27 and a vacuum pump 29.

Metal hydride hydrogen storage bottle S at end of branch 2₁The vacuum pumping treatment mode is as follows: will vacuumize the pipeline and three branchesAll ball valves and needle valves on the road are in a closed state, the vacuum pump 29 is started, and the third needle valve 27, the second needle valve 23 and the metal hydride hydrogen storage bottle S are opened₁The bottle mouth valve can realize the metal hydride hydrogen storage bottle S at the tail end of the branch 2₁And vacuumizing for at least 12 hours. Closing the hydrogen storage bottles S in sequence after the vacuum pumping is finished₁A bottle neck valve, a second needle valve 23, a third needle valve 27 and a vacuum pump 29.

Metal hydride hydrogen storage bottle S at end of branch 3₀The vacuum pumping treatment mode is as follows: all ball valves and needle valves on the vacuum-pumping pipeline and three branches are closed, the vacuum pump 29 is started, the third needle valve 27, the second needle valve 22 and the metal hydride hydrogen storage bottle S are opened₀The bottle mouth valve can realize the metal hydride hydrogen storage bottle S at the tail end of the branch 3₀And vacuumizing for at least 12 hours. Closing the metal hydride hydrogen storage bottle S in sequence after the vacuum pumping is finished₀A bottle neck valve, a second needle valve 22, a third needle valve 27 and a vacuum pump 29.

And step S2, a hydrogen charging pipeline is adopted to perform hydrogen charging treatment on the metal hydride hydrogen storage cylinder group unit. The branch 1 is charged with hydrogen and the treatment mode is as follows: a high-pressure hydrogen cylinder T₀The first needle valve 1 and the ball valve 3 are opened, the first electromagnetic valve 5 is opened, the first pressure reducing valve 9 is adjusted, the pressure value of a first pressure gauge 8 of the pressure reducing valve is checked, the pressure is output to the pressure value required by the test, the pressure is set to be 5MPa, the first flow meter 13 is adjusted to be the set value, the second electromagnetic valve 10 is opened, the second needle valve 24 and the metal hydride hydrogen storage bottle S are opened₂The bottle mouth valve of (2) is used for the metal hydride hydrogen storage bottle S₂And (5) filling hydrogen until the hydrogen filling pressure is 5MPa, and finishing the hydrogen filling after the constant pressure is 5 h. Then closing the metal hydride hydrogen storage bottle S in sequence₂A bottle mouth valve, a second needle valve 24, a second electromagnetic valve 10, a first electromagnetic valve 5, a ball valve 3, a first needle valve 1 and a high-pressure hydrogen cylinder T₀The valve of (2).

The hydrogen charging treatment mode of the branch 2 is as follows: a high-pressure hydrogen cylinder T₀The valve is opened, the first needle valve 1 and the ball valve 3 are opened, the first electromagnetic valve 5 is opened, the first pressure reducing valve 9 is adjusted, and the pressure of the first pressure gauge 8 of the pressure reducing valve is checkedThe force value is obtained, the output pressure is the pressure value required by the test, the pressure is set to be 5MPa, the first flow meter 17 is adjusted to be the set value, the second electromagnetic valve 14 is opened, the second needle valve 23 and the metal hydride hydrogen storage bottle S are opened₁The bottle mouth valve of (2) is used for the metal hydride hydrogen storage bottle S₁And (5) filling hydrogen until the hydrogen filling pressure is 5MPa, and finishing the hydrogen filling after the constant pressure is 5 h. Then closing the metal hydride hydrogen storage bottle S in sequence₁A bottle mouth valve, a second needle valve 23, a second electromagnetic valve 14, a first electromagnetic valve 5, a ball valve 3, a first needle valve 1 and a high-pressure hydrogen cylinder T₀The valve of (2).

The hydrogen charging treatment mode of the branch 3 is specifically as follows: a high-pressure hydrogen cylinder T₀The first needle valve 1 and the ball valve 3 are opened, the first electromagnetic valve 5 is opened, the first pressure reducing valve 9 is adjusted, the pressure value of the first pressure gauge 8 of the pressure reducing valve is checked, the pressure is output to the pressure value required by the test, the pressure is set to be 5MPa, the first flow meter 21 is adjusted to be the set value, the second electromagnetic valve 18 is opened, the second needle valve 22 and the metal hydride hydrogen storage bottle S are opened₀The bottle mouth valve of (2) is used for the metal hydride hydrogen storage bottle S₀And (5) filling hydrogen until the hydrogen filling pressure is 5MPa, and finishing the hydrogen filling after the constant pressure is 5 h. Then closing the metal hydride hydrogen storage bottle S in sequence₀A bottle mouth valve, a second needle valve 22, a second electromagnetic valve 18, a first electromagnetic valve 5, a ball valve 3, a first needle valve 1 and a high-pressure hydrogen cylinder T₀The valve of (2).

And step S3, evacuation processing is carried out on the metal hydride hydrogen storage cylinder group unit by adopting an evacuation pipeline. The evacuation treatment mode of the branch 1 is specifically as follows: opening metal hydride hydrogen storage bottle S in turn₂The second needle valve 24, the second solenoid valve 10 and the fourth needle valve 30, and when the second pressure sensor 11 indicates that the value is close to the atmospheric pressure, the fourth needle valve 30 is closed. Opening the third needle valve 27 and the vacuum pump 29 until the pressure value displayed by the second pressure sensor 11 is reduced to 0.01MPa, closing the vacuum pump 29, the third needle valve 27, the second electromagnetic valve 10, the second needle valve 24 and the metal hydride hydrogen storage bottle S in sequence after the evacuation is finished₂The bottleneck valve of (1).

The evacuation treatment mode of the branch 2 is specifically as follows: opening metal hydride hydrogen storage bottle S in turn₁A bottle neck valve, a second needle valve 23, a second solenoid valve 14 and a fourth needle valve30, when the second pressure sensor 15 indicates that the value is close to the atmospheric pressure, the fourth needle valve 30 is closed. Opening the third needle valve 27 and the vacuum pump 29 until the pressure value displayed by the second pressure sensor 15 is reduced to 0.01MPa, closing the vacuum pump 29, the third needle valve 27, the second electromagnetic valve 14, the second needle valve 23 and the metal hydride hydrogen storage bottle S in sequence after the evacuation is finished₁The bottleneck valve of (1).

The evacuation treatment mode of the branch 3 is specifically as follows: opening hydrogen storage bottles S in sequence₀The second needle valve 22, the second solenoid valve 18 and the fourth needle valve 30, and when the second pressure sensor 19 indicates that the value is close to the atmospheric pressure, the fourth needle valve 30 is closed. Opening the third needle valve 27 and the vacuum pump 29 until the pressure value displayed by the second pressure sensor 19 is reduced to 0.01MPa, closing the vacuum pump 29, the third needle valve 27, the second electromagnetic valve 18, the second needle valve 22 and the metal hydride hydrogen storage bottle S in sequence after the evacuation is finished₀The bottleneck valve of (1).

Step S4, the metal hydride hydrogen storage cylinder group unit is activated. And repeating the steps of S1 vacuumizing, S2 hydrogen filling and S3 emptying for more than two times until the metal hydride hydrogen storage bottle is completely activated, namely the hydrogen storage bottle can provide the maximum hydrogen amount.

And step S5, carrying out flow detection on the metal hydride hydrogen storage cylinder group unit after the activation treatment. The flow detection mode of the branch 1 is as follows: opening metal hydride hydrogen storage bottle S₂The second needle valve 24 is opened, the flow value of the first flow meter 13 is set, if the set value is 2L/min, the second electromagnetic valve 10 is opened, the fourth needle valve 30 is opened, the pressure value of the second pressure gauge 12 and the flow value of the first flow meter 13 are observed, when the flow value is reduced to 80 percent of the set value (namely 1.6L/min), the data is stopped to be recorded, and the metal hydride hydrogen storage tank S can be obtained from the first flow meter 13₂The cumulative hydrogen desorption flow rate. The flow data test is finished, the fourth needle valve 30, the second electromagnetic valve 10, the second needle valve 24 and the metal hydride hydrogen storage bottle S are closed₂The bottle mouth valve of the metal hydride hydrogen storage bottle is closed.

The flow detection mode of the branch 2 is specifically as follows: opening metal hydride hydrogen storage bottle S₁The bottle mouth valve of (1) opens the second needle valve23, setting the flow value of the first flowmeter 17, such as setting the value to be 2L/min, opening the second electromagnetic valve 14, opening the fourth needle valve 30, observing the pressure value of the second pressure gauge 16 and the flow value of the first flowmeter 17, when the flow value is reduced to 80% of the setting value (namely 1.6L/min), stopping recording data, and obtaining the metal hydride hydrogen storage tank S from the first flowmeter 17₁The cumulative hydrogen desorption flow rate. The flow data test is finished, the fourth needle valve 30, the second electromagnetic valve 14, the second needle valve 23 and the metal hydride hydrogen storage bottle S are closed₁The bottle mouth valve of the metal hydride hydrogen storage bottle is closed.

The flow detection mode of the branch 3 is specifically as follows: opening metal hydride hydrogen storage bottle S₀The second needle valve 22 is opened, the flow value of the first flow meter 21 is set, for example, the set value is 2L/min, the second electromagnetic valve 18 is opened, the fourth needle valve 30 is opened, the pressure value of the second pressure gauge 20 and the flow value of the first flow meter 21 are observed, when the flow value is reduced to 80 percent of the set value (namely, 1.6L/min), the data is stopped from recording, and the metal hydride hydrogen storage tank S can be obtained from the first flow meter 21₀The cumulative hydrogen desorption flow rate. The flow data test is finished, the fourth needle valve 30, the second electromagnetic valve 18, the second needle valve 22 and the metal hydride hydrogen storage bottle S are closed₀The bottle mouth valve of the metal hydride hydrogen storage bottle is closed.

And step S6, the hydrogen releasing pipeline is adopted to perform hydrogen releasing treatment on the metal hydride hydrogen storage cylinder group unit, and hydrogen is released into the gas mixing chamber of the gas mixing conveying pipeline. The processing mode of the branch 3 is specifically as follows: at the moment, the metal hydride hydrogen storage bottle S at the tail end of the branch 3₀Connected with the initial end of the hydrogen discharge pipeline, and the metal hydride hydrogen storage bottles S are opened in sequence₀A bottle mouth valve, a fifth needle valve 32 and a second flow meter 33 discharge hydrogen to the gas mixing chamber T according to the set flow value₄After the hydrogen release is finished for 30min, the fifth needle valve 32 and the metal hydride hydrogen storage bottle S are closed in sequence₀The bottleneck valve of (1).

The hydrogen discharge treatment mode of the branch 1 is as follows: at this time, the metal hydride hydrogen storage bottle S at the tail end of the branch 1₂Connected with the initial end of the hydrogen discharge pipeline, and the metal hydride hydrogen storage bottles S are opened in sequence₂Bottle mouth valve, fifth needle valve32, a second flow meter 33 discharges hydrogen to the gas mixing chamber T according to the set flow value₄After the hydrogen release is finished for 30min, the fifth needle valve 32 and the metal hydride hydrogen storage bottle S are closed in sequence₂The bottleneck valve of (1).

The hydrogen discharge treatment mode of the branch 2 is specifically as follows: at this time, the metal hydride hydrogen storage bottle S at the tail end of the branch 2₁Connected with the initial end of the hydrogen discharge pipeline, and the metal hydride hydrogen storage bottles S are opened in sequence₁A bottle-neck valve, a fifth needle valve 32, a second flow meter 33 to discharge hydrogen to the gas mixing chamber T according to the set flow value₄After the hydrogen release is finished for 30min, the fifth needle valve 32 and the metal hydride hydrogen storage bottle S are closed in sequence₁The bottleneck valve of (1).

And step S7, conveying oxygen to the gas mixing chamber of the gas mixing conveying pipeline by adopting the oxygen supply pipeline to obtain the hydrogen-oxygen mixed gas. Specifically, the oxygen cylinder T is opened in sequence₃A bottle mouth valve, a sixth needle valve 34, a second reducing valve 35 for reducing the pressure to 2MPa, and a third flow meter 36 for discharging hydrogen to the gas mixing chamber T according to the set flow value₄And after oxygen release is finished after 30min of continuous conveying, closing the sixth needle valve 34 and the oxygen cylinder T in sequence₃The bottleneck valve of (1).

And step S8, conveying the hydrogen-oxygen mixture by using a mixture conveying pipeline. Specifically, the air mixing chambers T are opened in sequence₄The bottle mouth valve, the seventh needle valve 37 and the third pressure reducing valve 38 reduce the pressure to 2MPa, the fourth flowmeter 39 discharges hydrogen to the inspiration cover 40 according to the set flow value, the oxyhydrogen mixed gas is continuously conveyed for 30min, the breathing of the mixed gas is finished, and then the seventh needle valve 37 and the gas mixing chamber T are closed in sequence₄The bottleneck valve of (1).

When the mixed gas with different proportions is needed, as described in step S8, the second flow meter 33 of the hydrogen discharge pipeline and the third flow meter 36 of the oxygen supply pipeline can be controlled and adjusted to realize the precise control of the mixed gas; when only pure hydrogen supply is needed, the oxygen supply pipeline is closed, and only the hydrogen discharge pipeline is opened; when the hydrogen supply is insufficient, as shown in step S2, a hydrogen charging line is opened to charge the metal hydride hydrogen storage bottle with hydrogen; when in emergency or in the field, only the spare metal hydride hydrogen storage cylinder, oxygen cylinder and mixed gas pipeline parts, such as the part shown by the broken line block diagram in fig. 1, can be carried, so as to ensure the supply of hydrogen and oxygen and the absorption of hydrogen.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.