Adjustable hydrogen-oxygen mixed gas preparation device for plateau area

Abstract

The invention relates to an adjustable hydrogen-oxygen mixed gas preparation device for a plateau area, and relates to the technical field of hydrogen-oxygen preparation equipment. The system comprises an air compressor, the exhaust end of the air compressor is connected with a dryer, the exhaust port of the dryer is connected with a vacuum pressure swing adsorption oxygen generation assembly and a water electrolysis hydrogen production assembly, the exhaust end of the vacuum pressure swing adsorption oxygen generation assembly comprises a first oxygen exhaust port and a nitrogen exhaust port, and the exhaust end of the water electrolysis hydrogen production assembly comprises a second oxygen exhaust port and a hydrogen exhaust port. The first oxygen exhaust port and the second oxygen exhaust port are connected with an oxygen storage tank, the hydrogen exhaust port is connected with a hydrogen storage tank, and the exhaust ends of the oxygen storage tank and the hydrogen storage tank are connected with a diffuse oxyhydrogen terminal; through respective preparation of hydrogen and oxygen, real-time adjustment of the hydrogen-oxygen ratio of the hydrogen-oxygen mixed gas can be achieved, meanwhile, oxygen and hydrogen are independently supplied in front of a dispersion gas outlet, and the risk of burning explosion after high-concentration gas is mixed is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen and oxygen preparation equipment, and in particular to an adjustable hydrogen and oxygen mixed gas preparation device for plateau areas. Background Art

[0002] Altitude sickness is a physiological stress response of the human body to the lack of oxygen in high altitude areas. This response is mainly because in high altitude areas, the oxygen partial pressure in the atmosphere is reduced, which directly affects the oxygenation of the blood, causing insufficient oxygen supply to the human body, leading to hypoxia. The main symptoms of altitude sickness include headache, dizziness, vomiting, palpitations, shortness of breath, etc. The key to treating altitude sickness is timely detection and treatment: mild patients can often recover by themselves through rest, while moderate and severe patients need to immediately inhale oxygen, take medication and other corresponding therapies. If conditions permit, inhalation of hydrogen and oxygen mixed gas can be used for treatment. For residents who have lived in plateau areas for a long time, there are also high altitude pulmonary edema, chronic obstructive pulmonary disease or airway inflammation caused by reduced oxygen concentration. Inhalation of hydrogen and oxygen mixed gas can reduce the lack of inspiratory force in patients with chronic plateau diseases and improve problems related to pneumatic inflammation.

[0003] Therefore, relevant units adopt the scheme of producing hydrogen by electrolysis of water, and the resulting hydrogen-oxygen mixer realizes the treatment of the above-mentioned chronic diseases at the plateau. Chinese patent document CN202222870701.3 provides a "hydrogen-oxygen machine", including a shell, the shell includes an electrolytic cell for producing hydrogen and oxygen; a receiving chamber, the receiving chamber is arranged above the electrolytic cell, wherein the receiving chamber is divided into an oxygen chamber and a hydrogen chamber by a partition plate, and the receiving chamber is provided with corresponding hydrogen outlets and oxygen outlets; thereby achieving small size and portability, not being restricted by the use environment, and convenient selection of hydrogen, oxygen and hydrogen-oxygen mixed gas exhaust modes, providing users with different use experience functions.

[0004] However, this technical solution still has shortcomings. It can only adapt to a small amount of hydrogen-oxygen mixed gas preparation schemes. It has high energy consumption, the hydrogen-oxygen ratio cannot be adjusted, and there is a certain risk of explosion. First of all, the electrolysis of water to produce hydrogen requires 5.7kWh of electricity to prepare 1 cubic meter of equal-proportion hydrogen-oxygen mixed gas. Since the raw material is water, the mixing ratio of hydrogen and oxygen is always maintained at 2:1. The hydrogen concentration in this ratio is relatively high, and there is a risk of combustion when exposed to open flames. On the other hand, in plateau areas, oxygen is the main gas that the human body needs to supplement. If its proportion is low, it cannot achieve the purpose of treating chronic diseases in the plateau. Additional oxygen is needed to achieve the purpose of improving the plateau environment. Therefore, the use scenarios of this solution are limited, so that the market cannot accept it, resulting in the solution having no practical value in plateau application scenarios.

[0005] Many areas in western my country have plateau environments, and it is common for residential areas or work areas to be above 2800m above sea level. The technical solution of preparing hydrogen and oxygen mixed gas by electrolyzing water in the known technology is obviously not suitable for this. Therefore, it is of great significance to study the technical solution of preparing adjustable hydrogen and oxygen mixed gas that can adapt to altitudes above 2800m. Summary of the invention

[0006] Based on the above description, the present invention provides an adjustable hydrogen-oxygen mixed gas preparation device for use in plateau areas to solve the problems raised in the above background technology.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: An adjustable hydrogen-oxygen mixed gas preparation device for plateau areas comprises an air compressor, the exhaust end of the air compressor is connected to an air dryer, the exhaust port of the air dryer is respectively connected to a vacuum pressure swing adsorption oxygen production component and a water electrolysis hydrogen production component, the exhaust end of the vacuum pressure swing adsorption oxygen production component comprises a first oxygen exhaust port and a nitrogen exhaust port, the exhaust end of the water electrolysis hydrogen production component comprises a second oxygen exhaust port and a hydrogen exhaust port, the first oxygen exhaust port and the second oxygen exhaust port are connected to an oxygen storage tank, the hydrogen exhaust port is connected to a hydrogen storage tank, and the exhaust ends of the oxygen storage tank and the hydrogen storage tank are connected to a diffused hydrogen-oxygen terminal.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the air compressor is connected to an air dryer via a one-way valve, the air dryer is connected to an air buffer tank, and the air buffer tank is connected to a vacuum pressure swing adsorption oxygen production component.

[0010] Furthermore, the vacuum pressure swing adsorption oxygen production component includes an adsorption tank 1, an adsorption tank 2, a programmable valve, a pressure regulating valve, an oxygen production pipeline and a nitrogen exhaust pipeline. The air inlet end of the adsorption tank 1 is connected to the air buffer tank and the nitrogen exhaust pipeline, the exhaust end of the adsorption tank 1 is connected to the adsorption tank 2 and the oxygen storage tank by the oxygen production pipeline, the air inlet end of the adsorption tank 2 is connected to the nitrogen exhaust pipeline, and the exhaust end of the adsorption tank 2 is connected to the oxygen storage tank through the oxygen production pipeline.

[0011] Furthermore, the inlet of the adsorption tank one is respectively connected to the programmable valve four, the programmable valve nine, and the programmable valve six, and the outlet is respectively connected to the programmable valve eleven, the programmable valve twelve, and the programmable valve fifteen. The pressure regulating valve is respectively connected to the programmable valve twelve, the programmable valve nine, and the programmable valve ten. The inlet of the adsorption tank two is respectively connected to the programmable valve eight, the programmable valve ten, and the programmable valve seven. The programmable valve six and the programmable valve seven are simultaneously connected to the programmable valve five, and the programmable valve five is connected to the nitrogen exhaust muffler.

[0012] Furthermore, the water electrolysis hydrogen production component includes a water pump, a radiator and an electrolytic cell which are connected in sequence, and the outlet of the electrolytic cell is connected to an oxygen storage tank and a hydrogen storage tank respectively.

[0013] Furthermore, dehumidifiers are respectively provided in the oxygen storage tank and the hydrogen storage tank, and the dehumidifiers are connected to corresponding water storage tanks, and the water storage tanks are connected to the water pump through corresponding drainage pipelines.

[0014] Furthermore, a CTA filter is provided between the air buffer tank and the vacuum pressure swing adsorption oxygen production component.

[0015] Furthermore, a nitrogen exhaust muffler is provided at the tail end of the nitrogen exhaust pipeline.

[0016] Furthermore, a hydrogen dryer is provided between the hydrogen storage tank and the diffused hydrogen and oxygen terminal.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. The present invention can achieve real-time adjustment of the hydrogen-oxygen ratio of the hydrogen-oxygen mixed gas by preparing hydrogen and oxygen separately. At the same time, oxygen and hydrogen are independently supplied before the diffused gas outlet, thereby avoiding the risk of explosion after high-concentration gas mixing; 2. The present invention adopts air separation technology to produce oxygen and water electrolysis technology to produce hydrogen, which can reduce the energy consumption of preparing each cubic meter of equal-proportion hydrogen-oxygen mixed gas to 2.75kwh / h, which is 1 times lower than the energy consumption of the original scheme; 3. The amount of oxygen prepared by the present invention is much greater than that of hydrogen, and independent diffuse oxygen supply can be realized, which significantly improves the adaptability of hydrogen-oxygen mixed gas equipment in plateau areas and expands the application scope of hydrogen-oxygen mixed gas equipment; 4. The diffuse hydrogen and oxygen terminal of the present invention can not only mix hydrogen and oxygen gases according to the set ratio, but also detect the ratio of hydrogen and oxygen in the diffuse space energy and calculate the equivalent altitude in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the principle of an adjustable hydrogen-oxygen mixed gas preparation device for plateau areas provided by the present invention; Figure 2 for Figure 1 The enlarged view of the dotted box part; In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Air compressor; 2. Air dryer; 301. Exhaust silencer; 302. Exhaust silencer; 303. CTA filter; 4. Air buffer tank; 501. Adsorption tank 1; 502. Adsorption tank 2; 503. Pressure regulating valve; 6. Oxygen storage tank; 701. Water pump; 702. Radiator; 703. Check valve; 704. Electrolyzer; 705. Hydrogen storage tank; 707. Throttle valve 1; 708. Throttle valve 2; 8. Bulk hydrogen and oxygen terminal; 901, program-controlled valve one; 902, program-controlled valve two; 903, program-controlled valve three; 904, program-controlled valve four; 905, program-controlled valve five; 906, program-controlled valve six; 907, program-controlled valve seven; 908, program-controlled valve eight; 909, program-controlled valve nine; 910, program-controlled valve ten; 911, program-controlled valve eleven; 912, program-controlled valve twelve; 913, program-controlled valve thirteen; 914, program-controlled valve fourteen; 915, program-controlled valve fifteen. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0022] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0023] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0024] like Figure 1 , Figure 2 The device shown is an adjustable hydrogen-oxygen mixed gas preparation device for plateau areas, comprising an air compressor 1, an air dryer 2, an exhaust silencer 301, an air buffer tank 4, a vacuum pressure swing adsorption oxygen production component, an oxygen demister, a water pump 701, a water electrolysis hydrogen production component, a hydrogen demister, a hydrogen dryer, a throttle valve, and a dispersed hydrogen-oxygen terminal.

[0025] The inlet of the air compressor 1 is connected to the air inlet of the air dryer 2 and the exhaust muffler 301 respectively. The air compressor 1 is connected to the air dryer 2 through a one-way valve 703. The air dryer 2 is connected to the air buffer tank 4, and the air buffer tank 4 is connected to the vacuum pressure swing adsorption oxygen production component. The exhaust port of the air dryer 2 is respectively connected to the vacuum pressure swing adsorption oxygen production component and the water electrolysis hydrogen production component. The dried air is sent to the vacuum pressure swing adsorption oxygen production component through a pipeline to produce oxygen, and the moisture collected in the air is sent to the water electrolysis hydrogen production component to produce hydrogen and oxygen. The produced oxygen is then combined with the oxygen produced by the vacuum pressure swing adsorption oxygen production component and collected into the oxygen storage tank 6, and the produced hydrogen is sent to the hydrogen storage tank 705. Finally, the oxygen storage tank 6 and the hydrogen storage tank 705 are respectively connected to the diffused hydrogen and oxygen terminal 8.

[0026] Among them, the exhaust end of the vacuum pressure swing adsorption oxygen production component includes a first oxygen exhaust port and a nitrogen exhaust port, and the vacuum pressure swing adsorption oxygen production component includes an adsorption tank 1 501, an adsorption tank 2 502, a programmable valve, a pressure regulating valve 503, an oxygen production pipeline and a nitrogen exhaust pipeline. The air inlet end of the adsorption tank 1 501 is connected to the air buffer tank 4 and the nitrogen exhaust pipeline, and the exhaust end of the adsorption tank 1 501 is connected to the adsorption tank 2 502 and the oxygen storage tank 6 respectively by the oxygen production pipeline, the air inlet end of the adsorption tank 2 502 is connected to the nitrogen exhaust pipeline, and the exhaust end of the adsorption tank 2 502 is connected to the oxygen storage tank 6 through the oxygen production pipeline. A nitrogen exhaust muffler 302 is provided at the tail end of the nitrogen exhaust pipeline. A CTA filter 303 is provided between the air buffer tank 4 and the vacuum pressure swing adsorption oxygen production component.

[0027] The inlet of adsorption tank 1 501 is respectively connected to programmable valve 4 904, programmable valve 909, and programmable valve 6 906, and the outlet is respectively connected to programmable valve 11 911, programmable valve 12 912, and programmable valve 15 915. The pressure regulating valve 503 is respectively connected to programmable valve 12 912, programmable valve 909, and programmable valve 10. The inlet of adsorption tank 2 502 is respectively connected to programmable valve 8 908, programmable valve 10 910, and programmable valve 7 907, and the outlet is respectively connected to programmable valve 13 913 and programmable valve 14 914. Programmable valve 6 906 and programmable valve 7 907 are simultaneously connected to programmable valve 5 905, and programmable valve 5 905 is connected to nitrogen exhaust muffler 302.

[0028] Adsorption tank 1 501 and adsorption tank 2 502 form a high and low pressure difference, and a pressure regulating valve 503 is set in the pipeline. One end of the pressure regulating valve 503 is respectively connected to the program-controlled valve 12 912, the program-controlled valve 14 914, and the program-controlled valve 15 915, and the other end is respectively connected to the program-controlled valve 909, the program-controlled valve 10 910, the program-controlled valve 11 911, and the program-controlled valve 13 913. Adsorption tank 1 501 and adsorption tank 2 502 are equipped with independent air pumps. In the figure, the lower part of adsorption tank 1 501 and adsorption tank 2 502 is the inlet, and the upper part is the outlet. After air intake, pressure equalization, oxygen exhaust, and nitrogen exhaust, oxygen enters the oxygen storage tank 6, and nitrogen is discharged through the nitrogen exhaust muffler 302.

[0029] The exhaust end of the water electrolysis hydrogen production component includes a second oxygen exhaust port and a hydrogen exhaust port, and the first oxygen exhaust port and the second oxygen exhaust port are connected to the oxygen storage tank 6, that is, the water electrolysis hydrogen production component and the vacuum pressure swing adsorption oxygen production component jointly prepare oxygen and send it to the oxygen storage tank 6. The hydrogen exhaust port is connected to the hydrogen storage tank 705, and the exhaust ends of the oxygen storage tank 6 and the hydrogen storage tank 705 are connected to the diffused hydrogen and oxygen terminal 8.

[0030] The electrolysis water hydrogen production component includes a water pump 701, a radiator 702 and an electrolyzer 704 connected in sequence, and the outlet of the electrolyzer 704 is respectively connected to the oxygen storage tank 6 and the hydrogen storage tank 705. The oxygen and hydrogen produced by electrolysis will contain moisture, so dehumidifiers are respectively provided in the oxygen storage tank 6 and the hydrogen storage tank 705, and the bottom of the dehumidifier is connected to a corresponding water storage tank, which is connected to the water pump 701 through a corresponding drainage pipeline to form a cycle.

[0031] Preferably, a hydrogen dryer is provided between the hydrogen storage tank 705 and the diffused hydrogen and oxygen terminal 8 to improve safety.

[0032] The diffused hydrogen and oxygen terminal is used to control and adjust the flow rate of oxygen, detect the concentration of oxygen, and adjust the flow rate and hydrogen content of the hydrogen-oxygen mixture to a preset range, that is, the gas output of the hydrogen-oxygen mixture is 0.03 to 20L / min, of which the hydrogen content accounts for 0% to 100%. It is worth noting that when the hydrogen content exceeds the explosion limit (that is, when the hydrogen content is greater than 4%), a flame arrester should be added behind the outlet of the diffused hydrogen-oxygen terminal 8 to further improve the safety of the device. According to the needs of the user, the flow rate and hydrogen content of the hydrogen-oxygen mixture are adjusted to the preset range, and then discharged for use or directly discharged for use, which is safe and reliable.

[0033] When this scheme is running, the oxygen production of the vacuum pressure swing adsorption oxygen production component is about 1 times the hydrogen production of the water electrolysis hydrogen production component. Since the water electrolysis hydrogen production component also produces oxygen, the oxygen production is 0.5 times the hydrogen production, so the system hydrogen and oxygen production ratio is 1 to 2.5, so as to meet the oxygen production needs and hydrogen and oxygen mixing ratio requirements of the plateau environment. When the device is running, the raw material for oxygen production is the air compressed by air compressor 1, the oxygen output rate is about 95% of the oxygen content of air, and the actual energy consumption is about 0.5kWh / m³. The raw materials for hydrogen production are the water precipitated in the oxygen demister, hydrogen demister and dryer. The actual energy consumption of hydrogen production is about 2.5kWh / m³, so the actual energy consumption of the production of equal-proportion hydrogen and oxygen mixture can be reduced to 2.75kWh / m³.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable hydrogen-oxygen mixed gas preparation device for plateau areas, characterized in that: The invention comprises an air compressor (1), wherein the exhaust end of the air compressor (1) is connected to an air dryer (2), the exhaust port of the air dryer (2) is respectively connected to a vacuum pressure swing adsorption oxygen production component and a water electrolysis hydrogen production component, the exhaust end of the vacuum pressure swing adsorption oxygen production component comprises a first oxygen exhaust port and a nitrogen exhaust port, the exhaust end of the water electrolysis hydrogen production component comprises a second oxygen exhaust port and a hydrogen exhaust port, the first oxygen exhaust port and the second oxygen exhaust port are connected to an oxygen storage tank (6), the hydrogen exhaust port is connected to a hydrogen storage tank (705), and the exhaust ends of the oxygen storage tank (6) and the hydrogen storage tank (705) are connected to a diffused hydrogen and oxygen terminal (8).

2. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 1, characterized in that: The air compressor (1) is connected to the air dryer (2) via a one-way valve (703), the air dryer (2) is connected to the air buffer tank (4), and the air buffer tank (4) is connected to the vacuum pressure swing adsorption oxygen production component.

3. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 1, characterized in that: The vacuum pressure swing adsorption oxygen production component comprises an adsorption tank 1 (501), an adsorption tank 2 (502), a programmable valve, a pressure regulating valve (503), an oxygen production pipeline and a nitrogen exhaust pipeline. The air inlet end of the adsorption tank 1 (501) is connected to an air buffer tank (4) and a nitrogen exhaust pipeline. The exhaust end of the adsorption tank 1 (501) is connected to the adsorption tank 2 (502) and an oxygen storage tank (6) through an oxygen production pipeline. The air inlet end of the adsorption tank 2 (502) is connected to the nitrogen exhaust pipeline. The exhaust end of the adsorption tank 2 (502) is connected to the oxygen storage tank (6) through the oxygen production pipeline.

4. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 3 is characterized in that: The inlet of the adsorption tank one (501) is respectively connected to the programmable valve four (904), the programmable valve nine (909), and the programmable valve six (906), and the outlet is respectively connected to the programmable valve eleven (911), the programmable valve twelve (912), and the programmable valve fifteen (915). The pressure regulating valve (503) is respectively connected to the programmable valve twelve (912), the programmable valve nine (909), and the programmable valve ten (910). The inlet of the adsorption tank two (502) is respectively connected to the programmable valve eight (908), the programmable valve ten (910), and the programmable valve seven (907). The programmable valve six (906) and the programmable valve seven (907) are simultaneously connected to the programmable valve five (905), and the programmable valve five (905) is connected to the nitrogen exhaust muffler (302).

5. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 1, characterized in that: The water electrolysis hydrogen production component comprises a water pump (701), a radiator (702) and an electrolyzer (704) which are connected in sequence, and the outlet of the electrolyzer (704) is connected to an oxygen storage tank (6) and a hydrogen storage tank (705) respectively.

6. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 1, characterized in that: The oxygen storage tank (6) and the hydrogen storage tank (705) are respectively provided with a dehumidifier, and the dehumidifier is connected to a corresponding water storage tank, and the water storage tank is connected to a water pump (701) through a corresponding drainage pipeline.

7. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 3, characterized in that: A CTA filter (303) is provided between the air buffer tank (4) and the vacuum pressure swing adsorption oxygen production component.

8. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 3 is characterized in that: A nitrogen exhaust muffler (302) is provided at the tail end of the nitrogen exhaust pipeline.

9. The adjustable hydrogen-oxygen mixed gas preparation device for plateau areas according to claim 1, characterized in that: A hydrogen dryer (706) is provided between the hydrogen storage tank (705) and the diffused hydrogen and oxygen terminal.

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