System for detecting oxygen production performance of micro hyperbaric oxygen chamber in simulated plateau low-pressure environment

Abstract

The invention discloses a system for detecting the oxygen production performance of a micro-hyperbaric oxygen chamber in a simulated plateau low-pressure environment, and belongs to the technical field of micro-hyperbaric oxygen chamber performance detection, and the system comprises a first gas storage tank, a second gas storage tank, a third gas storage tank, an oxygen performance detection piece and an oxygen production module for providing oxygen for the micro-hyperbaric oxygen chamber; the first gas storage tank is communicated with a gas inlet of the oxygen generation module, the second gas storage tank is communicated with a waste gas port of the oxygen generation module, and the third gas storage tank is communicated with an oxygen outlet of the oxygen generation module; the oxygen performance detection piece is mounted on a pipeline for communicating the oxygen generation module with the third gas storage tank; the first air storage tank is communicated with the atmosphere through a first regulating valve and is communicated with a first vacuum pump; the second air storage tank is communicated with the atmosphere through a second regulating valve and is communicated with a second vacuum pump; the third gas storage tank is communicated with the atmosphere through a third regulating valve and is communicated with a third vacuum pump; according to the invention, the low-pressure environment can be simulated at low cost, so that the oxygen production performance of the micro hyperbaric oxygen chamber can be detected.

Description

Technical Field

[0001] The present invention belongs to the technical field of micro-hyperbaric oxygen chamber performance detection, and in particular relates to a system for detecting the oxygen production performance of a micro-hyperbaric oxygen chamber in a simulated high-altitude low-pressure environment. Background Art

[0002] The oxygen concentration and flow rate of the oxygen chamber and the micro-high pressure in the chamber are the key elements to realize the function of the micro-high pressure oxygen chamber. In order to maintain the accurate gas concentration and flow rate in the oxygen chamber, the oxygen chamber needs to be tested under various environmental conditions. Most oxygen chambers are developed and used in plain areas, and the initial parameters set are suitable for environments with abundant air content. However, when used in plateau areas, there are often the following differences:

[0003] (1) Air pressure difference. The air pressure in plateau areas is lower, and the oxygen partial pressure is also lower, which puts higher requirements on the oxygen production capacity and maintenance of oxygen concentration of the oxygen chamber. In plain areas, the air pressure is higher, the oxygen partial pressure is higher, and the working conditions of the oxygen chamber are relatively loose.

[0004] (2) Differences in oxygen chamber performance requirements. In plateau areas, oxygen chambers need to provide higher oxygen concentrations and more stable oxygen supply to compensate for the lack of oxygen caused by low air pressure.

[0005] (3) Differences in pressure regulation and control. In high altitude environments, oxygen chambers require a more precise pressure regulation system to simulate suitable environmental conditions.

[0006] In order to optimize the design, improve product performance, and make it more suitable for use in different environmental conditions, it is necessary to further collect data on the micro-hyperbaric oxygen chamber in the low-pressure environment of the plateau. Traditional performance testing methods usually rely on local testing and development in the plateau, which increases costs and risks. Therefore, a reliable system for testing the oxygen production performance of the micro-hyperbaric oxygen chamber in a simulated low-pressure environment of the plateau is needed to solve the current problems. Summary of the invention

[0007] The purpose of the present invention is to provide a system for detecting the oxygen production performance of a micro-hyperbaric oxygen chamber in a simulated plateau low-pressure environment, which can simulate a low-pressure environment at a low cost, thereby detecting the oxygen production performance of the micro-hyperbaric oxygen chamber.

[0008] The present invention provides the following technical solutions:

[0009] A system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber in a simulated plateau low-pressure environment, comprising a first gas storage tank, a second gas storage tank, a third gas storage tank, an oxygen performance detection component, and an oxygen production module for providing oxygen to the micro-hyperbaric oxygen chamber; the first gas storage tank is communicated with an air inlet of the oxygen production module, the second gas storage tank is communicated with an exhaust port of the oxygen production module, and the third gas storage tank is communicated with an oxygen outlet of the oxygen production module;

[0010] The oxygen performance detection component is installed on the pipeline connecting the oxygen production module and the third gas storage tank;

[0011] The first gas storage tank is connected to the atmosphere through a first regulating valve, and the first gas storage tank is also connected to a first vacuum pump;

[0012] The second gas storage tank is connected to the atmosphere through a second regulating valve, and the second gas storage tank is also connected to a second vacuum pump;

[0013] The third gas storage tank is connected to the atmosphere through a third regulating valve, and the third gas storage tank is also connected to a third vacuum pump;

[0014] By controlling the openings of the first regulating valve, the second regulating valve and the third regulating valve, the pressure values ​​of the first gas storage tank, the second gas storage tank and the third gas storage tank are adjusted to simulate the low pressure environment at various positions of the oxygen production module.

[0015] Optionally, the oxygen production module includes a first molecular sieve, a second molecular sieve, a two-position four-way valve, a first flow limiting component, a second flow limiting component and an intermediate oxygen storage tank; the first gas storage tank is communicated with the first interface a of the two-position four-way valve, and an air compressor is arranged on the connecting pipe, the second gas storage tank is communicated with the third interface c of the two-position four-way valve, the second interface b and the fourth interface d of the two-position four-way valve are respectively connected to the first connecting pipes of the first molecular sieve and the second molecular sieve; the second connecting pipes of the first molecular sieve and the second molecular sieve are connected to the intermediate oxygen storage tank after merging, the first flow limiting component is located on the second connecting pipe of the first molecular sieve, the second flow limiting component is located on the second connecting pipe of the second molecular sieve, and the intermediate oxygen storage tank is communicated with the third gas storage tank.

[0016] Optionally, the first flow limiting member and the second flow limiting member are both flow limiting orifice plates.

[0017] Optionally, the first gas storage tank, the second gas storage tank and the third gas storage tank are all provided with pressure gauges; and the oxygen performance detection component is an oxygen concentration flow sensor.

[0018] Optionally, the first vacuum pump, the second vacuum pump and the third vacuum pump are all fixed-frequency vacuum pumps; and the power of the third vacuum pump is smaller than that of the first vacuum pump and the second vacuum pump.

[0019] Optionally, the aperture of the first regulating valve when at its maximum opening is not less than the inner diameter of the connecting pipe between the first vacuum pump and the first gas storage tank, and the inner hole of the connecting pipe between the first regulating valve and the first gas storage tank.

[0020] Optionally, the aperture of the second regulating valve when at its maximum opening is not less than the inner diameter of the connecting pipe between the second vacuum pump and the second gas storage tank, and the inner hole of the connecting pipe between the second regulating valve and the second gas storage tank.

[0021] Optionally, the aperture of the third regulating valve when at its maximum opening is not less than the inner diameter of the connecting pipe between the third vacuum pump and the third gas storage tank, and the inner hole of the connecting pipe between the third regulating valve and the third gas storage tank.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention has a simple structure, avoids expensive off-site testing processes, and reduces testing costs; performs testing in a controlled environment, reducing potential risks and unexpected situations; and obtains more accurate performance test results by accurately simulating and adjusting the pressurization and oxygen production requirements of the propulsion oxygen production module; the testing process can be repeated, making it convenient to compare and evaluate performance under different parameters and conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Markings in the figure are: 1 is the first regulating valve, 2 is the first pressure gauge, 3 is the first gas storage tank, 4 is the first vacuum pump, 5 is the air compressor, 6 is the two-position four-way valve, 7 is the first molecular sieve, 8 is the second molecular sieve, 9 is the first flow limiting component, 10 is the second flow limiting component, 11 is the intermediate oxygen storage tank, 12 is the oxygen performance detection component, 13 is the third gas storage tank, 14 is the third pressure gauge, 15 is the third regulating valve, 16 is the third vacuum pump, 17 is the second gas storage tank, 18 is the second pressure gauge, 19 is the second regulating valve, 20 is the second vacuum pump, and 100 is the oxygen production module. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] like Figure 1As shown, a system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber in a simulated plateau low-pressure environment includes a first gas storage tank 3, a second gas storage tank 17, a third gas storage tank 13, an oxygen performance detection component 12, and an oxygen production module 100 for providing oxygen to the micro-hyperbaric oxygen chamber; the first gas storage tank 3 is communicated with the air inlet of the oxygen production module 100, the second gas storage tank 17 is communicated with the exhaust port of the oxygen production module 100, and the third gas storage tank 13 is communicated with the oxygen outlet of the oxygen production module 100;

[0029] The oxygen performance detection component 12 is installed on the pipeline connecting the oxygen production module 100 and the third gas storage tank 13. In the present embodiment, the oxygen performance detection component 12 is an oxygen concentration flow sensor. The structure of the oxygen concentration flow sensor refers to the prior art. As an option, the oxygen concentration flow sensor is an ultrasonic flow concentration sensor. Of course, in some other embodiments, the oxygen performance detection component 12 may also be a flow sensor and a gas concentration sensor.

[0030] The first gas tank 3 is connected to the atmosphere through the first regulating valve 1, and the first gas tank 3 is also connected to the first vacuum pump 4; the second gas tank 17 is connected to the atmosphere through the second regulating valve 19, and the second gas tank 17 is also connected to the second vacuum pump 20; the third gas tank 13 is connected to the atmosphere through the third regulating valve 15, and the third gas tank 13 is also connected to the third vacuum pump 16; by controlling the opening of the first regulating valve 1, the second regulating valve 19 and the third regulating valve 15, the pressure values ​​of the first gas tank 3, the second gas tank 17 and the third gas tank 13 are adjusted to simulate the low-pressure environment at various positions of the oxygen production module 100.

[0031] The air flow rate entering the first gas tank 3 is controlled by adjusting the valve opening of the first regulating valve 1, thereby changing the pressure value of the first gas tank 3 and simulating the low-pressure environment of the air inlet of the oxygen production module 100. The air flow rate entering the second gas tank 17 is controlled by adjusting the valve opening of the second regulating valve 19, thereby changing the pressure value in the second gas tank 17 and simulating the low-pressure environment of the exhaust port of the oxygen production system. The air flow rate entering the third gas tank 13 is controlled by adjusting the valve opening of the third regulating valve 15, thereby changing the pressure value in the third gas tank 13 and simulating the pressure environment in the micro-hyperbaric oxygen chamber to maintain a constant pressure value.

[0032] The present invention simulates the low-pressure environment at different positions of the oxygen production system through the first gas storage tank 3, the second gas storage tank 17, and the third gas storage tank 13, so that the oxygen production performance of the oxygen production module 100 can be tested in advance under the conditions of low air density and low oxygen partial pressure in plateau areas to ensure the effectiveness of the oxygen production module 100 in the actual plateau environment; at the same time, the safety and adaptability of the oxygen chamber under extreme conditions can also be evaluated to ensure that it can provide sufficient oxygen support in the actual plateau environment to prevent performance degradation or safety hazards caused by environmental changes.

[0033] In this embodiment, the oxygen production module 100 includes a first molecular sieve 7, a second molecular sieve 8, a two-position four-way valve 6, a first flow limiter 9, a second flow limiter 10 and an intermediate oxygen storage tank 11; the first gas storage tank 3 is communicated with the first interface a of the two-position four-way valve 6, and an air compressor 5 is arranged on the connecting pipe, the second gas storage tank 17 is communicated with the third interface c of the two-position four-way valve 6, the second interface b and the fourth interface d of the two-position four-way valve 6 are respectively connected to the first connecting pipes of the first molecular sieve 7 and the second molecular sieve 8; the second connecting pipes of the first molecular sieve 7 and the second molecular sieve 8 are connected to the intermediate oxygen storage tank 11 after merging, the first flow limiter 9 is located on the second connecting pipe of the first molecular sieve 7, the second flow limiter 10 is located on the second connecting pipe of the second molecular sieve 8, and the intermediate oxygen storage tank 11 is communicated with the third gas storage tank 13; when the first interface a of the two-position four-way valve 6 When the first interface a and the second interface b are connected, the third interface c and the fourth interface d are connected. At this time, the first molecular sieve 7 produces oxygen. Under the action of the second flow limiting component 10, most of the high-concentration oxygen after oxygen production enters the intermediate oxygen storage tank 11, and a small part enters the second molecular sieve 8, and the second molecular sieve 8 is desorbed. The waste gas after desorption enters the second gas storage tank 17. After running for a cycle, the medium flow direction of the two-position four-way valve 6 is changed, that is, the first interface a and the fourth interface d of the two-position four-way valve 6 are connected, and the second interface b is connected with the third interface c. At this time, the second molecular sieve 8 produces oxygen. Under the action of the first flow limiting component 9, most of the high-concentration oxygen after oxygen production enters the intermediate oxygen storage tank 11, and a small part enters the first molecular sieve 7, and the first molecular sieve 7 is desorbed. The waste gas after desorption enters the second gas storage tank 17; in the oxygen production process, the interval switching of the two-position four-way valve 6 is used to achieve continuous oxygen production.

[0034] The adsorbent of the first molecular sieve 7 or the second molecular sieve 8 refers to the prior art. When the molecular sieve produces oxygen, it adsorbs nitrogen and carbon dioxide in the air to enrich oxygen.

[0035] In this embodiment, the first flow limiting member 9 and the second flow limiting member 10 are both flow limiting orifice plates. In some other embodiments, the first flow limiting member 9 and the second flow limiting member 10 may also be throttle valves.

[0036] In this embodiment, pressure gauges are provided on the first gas tank 3, the second gas tank 17 and the third gas tank 13, so as to facilitate observation of the pressures of the first gas tank 3, the second gas tank 17 and the third gas tank 13. Specifically, the first gas tank 3 is connected to the first pressure gauge 2, the second gas tank 17 is connected to the second pressure gauge 18, and the third gas tank 13 is connected to the third pressure gauge 14.

[0037] In the present embodiment, since the first vacuum pump 4 is an ordinary fixed-frequency vacuum pump, in order to prevent the pressure of the first gas tank 3 from being too low due to an excessive flow of the first vacuum pump 4, the aperture of the first regulating valve 1 when it is at its maximum opening is not less than the inner diameter of the connecting pipe between the first vacuum pump 4 and the first gas tank 3, and the inner hole of the connecting pipe between the first regulating valve 1 and the first gas tank 3; similarly, since the second vacuum pump 20 is an ordinary fixed-frequency vacuum pump, in order to prevent the pressure of the second gas tank 17 from being too low due to an excessive flow of the second vacuum pump 20, the aperture of the second regulating valve 19 when it is at its maximum opening is not less than the inner diameter of the connecting pipe between the second vacuum pump 20 and the second gas tank 17, and the inner hole of the connecting pipe between the second regulating valve 19 the inner hole of the connecting pipe with the second gas tank 17; since the third gas tank 13 simulates a micro-hyperbaric oxygen chamber, the pressure of the third gas tank 13 is higher than that of the first gas tank 3 and the second gas tank 17; since the first vacuum pump 4, the second vacuum pump 20 and the third vacuum pump 16 are all fixed-frequency vacuum pumps; the power of the third vacuum pump 16 is less than that of the first vacuum pump 4 and the second vacuum pump 20; in order to avoid the pressure of the third gas tank 13 being too low due to excessive flow of the third vacuum pump 16, the aperture of the third regulating valve 15 when it is at the maximum opening is not less than the inner diameter of the connecting pipe between the third vacuum pump 16 and the third gas tank 13, and the inner hole of the connecting pipe between the third regulating valve 15 and the third gas tank 13.

[0038] The working process of the present invention is:

[0039] Start the first vacuum pump 4 and the air compressor 5, and control the pressure value of the first gas storage tank 3 by adjusting the valve opening of the first regulating valve 1 to simulate the low-pressure environment of the air inlet of the oxygen production module 100;

[0040] The oxygen production module 100 produces oxygen, and during the oxygen production process, the exhaust gas from the oxygen production enters the second gas tank 17, and the high-concentration oxygen flows through the oxygen concentration flow sensor and enters the third gas tank 13; the pressure value of the second gas tank 17 is controlled by adjusting the valve opening of the second regulating valve 19 to simulate the low-pressure environment of the exhaust port of the oxygen production module 100; the third gas tank 13 simulates the pressure in the cabin of the micro-hyperbaric oxygen chamber, and the third gas tank 13 needs to maintain a constant pressure value; the pressure value of the third gas tank 13 is controlled by adjusting the valve opening of the third regulating valve 15;

[0041] During the oxygen production process of the oxygen production module 100, when the first molecular sieve 7 is in the oxygen production state, the second molecular sieve 8 is in the desorption state, or when the first molecular sieve 7 is in the desorption state, the second molecular sieve 8 is in the oxygen production state; the switching of the states of the first molecular sieve 7 and the second molecular sieve 8 can be achieved by changing the medium conduction direction of the two-position four-way valve 6.

[0042] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0043] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A system for testing the oxygen production performance of a micro-hyperbaric oxygen chamber in a simulated plateau low-pressure environment, characterized in that: The invention comprises a first gas storage tank (3), a second gas storage tank (17), a third gas storage tank (13), an oxygen performance detection component (12), and an oxygen production module ((100)) for providing oxygen to a micro-hyperbaric oxygen chamber; the first gas storage tank (3) is communicated with an air inlet of the oxygen production module ((100)), the second gas storage tank (17) is communicated with an exhaust port of the oxygen production module ((100)), and the third gas storage tank (13) is communicated with an oxygen outlet of the oxygen production module ((100)); The oxygen performance detection element (12) is installed on a pipeline connecting the oxygen production module ((100)) and the third gas storage tank (13); The first gas storage tank (3) is connected to the atmosphere via a first regulating valve (1), and the first gas storage tank (3) is also connected to a first vacuum pump (4); The second gas storage tank (17) is connected to the atmosphere via a second regulating valve (19), and the second gas storage tank (17) is also connected to a second vacuum pump (20); The third gas storage tank (13) is connected to the atmosphere via a third regulating valve (15), and the third gas storage tank (13) is also connected to a third vacuum pump (16); By controlling the openings of the first regulating valve (1), the second regulating valve (19) and the third regulating valve (15), the pressure values ​​of the first gas storage tank (3), the second gas storage tank (17) and the third gas storage tank (13) are adjusted to simulate the low-pressure environment at various positions of the oxygen production module ((100)).

2. The system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber under a simulated plateau low-pressure environment according to claim 1, characterized in that: The oxygen production module ((100)) comprises a first molecular sieve (7), a second molecular sieve (8), a two-position four-way valve (6), a first flow limiting component (9), a second flow limiting component (10) and an intermediate oxygen storage tank (11); the first gas storage tank (3) is communicated with a first interface a of the two-position four-way valve (6), and an air compressor (5) is arranged on the connecting pipe; the second gas storage tank (17) is communicated with a third interface c of the two-position four-way valve (6); the second interface b and the fourth interface d of the two-position four-way valve (6) are respectively connected to the first connecting pipes of the first molecular sieve (7) and the second molecular sieve (8); the second connecting pipes of the first molecular sieve (7) and the second molecular sieve (8) are connected to the intermediate oxygen storage tank (11) after merging; the first flow limiting component (9) is located on the second connecting pipe of the first molecular sieve (7); the second flow limiting component (10) is located on the second connecting pipe of the second molecular sieve (8); and the intermediate oxygen storage tank (11) is communicated with the third gas storage tank (13).

3. The system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber under a simulated plateau low-pressure environment according to claim 2, characterized in that: The first flow limiting member (9) and the second flow limiting member (10) are both flow limiting orifice plates.

4. The system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber under a simulated plateau low-pressure environment according to claim 1, characterized in that: The first gas storage tank (3), the second gas storage tank (17) and the third gas storage tank (13) are all provided with pressure gauges; and the oxygen performance detection component (12) is an oxygen concentration flow sensor.

5. The system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber under a simulated plateau low-pressure environment according to claim 1, characterized in that: The first vacuum pump (4), the second vacuum pump (20) and the third vacuum pump (16) are all fixed-frequency vacuum pumps; the power of the third vacuum pump (16) is smaller than that of the first vacuum pump (4) and the second vacuum pump (20).

6. The system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber under a simulated plateau low-pressure environment according to claim 1, characterized in that: The aperture of the first regulating valve (1) when it is at its maximum opening is not less than the inner diameter of the connecting pipe between the first vacuum pump (4) and the first gas storage tank (3), and the inner hole of the connecting pipe between the first regulating valve (1) and the first gas storage tank (3).

7. The system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber under a simulated plateau low-pressure environment according to claim 1, characterized in that: The aperture of the second regulating valve (19) when it is at its maximum opening is not less than the inner diameter of the connecting pipe between the second vacuum pump (20) and the second gas storage tank (17), and the inner hole of the connecting pipe between the second regulating valve (19) and the second gas storage tank (17).

8. The system for detecting oxygen production performance of a micro-hyperbaric oxygen chamber under a simulated plateau low-pressure environment according to claim 1, characterized in that: The aperture of the third regulating valve (15) when at its maximum opening is not less than the inner diameter of the connecting pipe between the third vacuum pump (16) and the third gas storage tank (13), and the inner hole of the connecting pipe between the third regulating valve (15) and the third gas storage tank (13).

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