PSA oxygen production and emergency oxygen production combined oxygen using system and oxygen using method

Abstract

The invention discloses a PSA oxygen production and emergency oxygen production combined oxygen using system and an oxygen using method. The system comprises a PSA oxygen production unit, an emergency oxygen production unit, a low-pressure buffer tank, an oxygen supercharger, a high-pressure oxygen storage tank, a filling device and a portable oxygen supply device. A low-pressure sensor is arranged on the low-pressure buffer tank; a high-pressure sensor is arranged on the high-pressure oxygen storage tank; an oxygen concentration monitor is arranged between the reversing valve of the oxygen conveying pipeline and the air outlet of the molecular sieve group; and the master control module controls the working states of the PSA oxygen generation unit and the oxygen supercharger through monitoring and signal feedback of the low-pressure sensor, the high-pressure sensor and the oxygen concentration monitor. The system is simple in structure, small in size and high in space utilization rate, has multiple oxygen generation schemes, can realize emergency oxygen supply schemes under special conditions, and can store a certain amount of oxygen under daily conditions for unexpected needs.

Description

Technical Field

[0001] The present invention relates to the field of oxygen supply, and in particular to a PSA oxygen production and emergency oxygen production combined oxygen supply system. Background Art

[0002] Oxygen has always been an important component in both plains and plateaus. In daily life, frequent oxygen inhalation can relax nerves, relieve nerve fatigue, improve brain oxygen supply, and regulate brain and nervous system functions to a certain extent. Frequent oxygen inhalation can also reduce stress responses in the respiratory, circulatory, digestive, and nervous systems to varying degrees.

[0003] At present, most of the oxygen supply systems on the market are made of containers, which are large in size, inconvenient to transport and install, and there are still certain disadvantages in the oxygen replenishment equipment. If the oxygen production equipment fails during use, the maintenance cycle is long, the efficiency is low and the cost is very high.

[0004] At present, some oxygen concentrators on the market operate in a continuous oxygen supply mode, that is, the machine keeps outputting oxygen regardless of whether we breathe in or not. This oxygen supply mode has a low oxygen utilization rate and can only be used in oxygen-using environments at home. If it is a military unit or hospital, emergency station, sanatorium, etc. in high-altitude areas or areas with underdeveloped transportation, the solution of centralized oxygen supply using oxygen concentrators becomes unrealistic. Summary of the invention

[0005] The present invention is proposed to alleviate or solve at least one aspect or at least one point of the above problems.

[0006] A PSA oxygen production and emergency oxygen production combined oxygen system of the present invention comprises: a PSA oxygen production group 1, an emergency oxygen production group 2, a low-pressure buffer tank 3, an oxygen booster 4, a high-pressure oxygen storage tank 5, a filler and a portable oxygen supply device 7;

[0007] The oxygen outlet interfaces of the PSA oxygen production group 1 and the emergency oxygen production group 2 are connected in parallel and then connected to the air inlet of the low-pressure buffer tank 3 through a first pipeline;

[0008] The air outlet of the low-pressure buffer tank 3 is connected to the air inlet of the oxygen booster 4 through a second pipeline, and the air outlet of the oxygen booster 4 is connected to the air inlet of the high-pressure oxygen storage tank 5 through a third pipeline;

[0009] The gas outlet of the high-pressure oxygen storage tank 5 is communicated with the filler 8;

[0010] The filler 8 is used to fill the portable oxygen supply device 7 with high-pressure oxygen;

[0011] The emergency oxygen production group is a chemical oxygen production group.

[0012] Preferably, it also includes a master control module, which is respectively controlled and connected with the PSA oxygen production group 1, the emergency oxygen production group 2, the low-pressure buffer tank 3, the oxygen booster 4, and the high-pressure oxygen storage tank 5.

[0013] Preferably, the PSA oxygen production group 1 comprises a compressor 11, a switching valve 12 and a molecular sieve group 13; the molecular sieve group 13 comprises a molecular sieve tower a131 and a molecular sieve tower b132;

[0014] The switching valve 12 includes an air inlet 121, an air outlet a122, an air outlet b123 and an air return port 124;

[0015] The air inlet 121 of the switching valve 12 is communicated with the air outlet of the compressor 11;

[0016] The switching valve can switch between a first working state and a second working state;

[0017] In the first working state, the gas outlet a122 of the switching valve 12 is connected to the gas inlet end of the molecular sieve tower a131, and the gas inlet end of the molecular sieve tower b132 is connected to the gas return port 124;

[0018] In the first working state, the gas outlet a122 of the switching valve 12 is connected to the gas inlet end of the molecular sieve tower a131; the gas outlet b123 of the switching valve 12 is connected to the gas inlet end of the molecular sieve tower b132 and the gas return port 124;

[0019] In the second working state, the gas outlet b123 of the switching valve 12 is connected to the gas inlet end of the molecular sieve tower b132, and the gas outlet a122 of the switching valve 12 is connected to the gas inlet end and the gas return port 124 of the molecular sieve tower a131.

[0020] Preferably, the gas outlet ends of the molecular sieve tower a131 and the molecular sieve tower b132 are both provided with a one-way valve 151, and a reversing valve 153 is provided on the oxygen supply pipeline 15, the gas outlet of the reversing valve 153 is connected to the low-pressure buffer tank 3, and the gas return port of the reversing valve 153 is connected to the exhaust pipeline 152.

[0021] Preferably, a low-pressure sensor 31 is provided on the low-pressure buffer tank 3; a high-pressure sensor 51 is provided on the high-pressure oxygen storage tank 5; an oxygen concentration monitor 154 is provided between the reversing valve 153 of the oxygen supply pipeline 15 and the gas outlet of the molecular sieve group 13; the main control module 6 controls the working state of the PSA oxygen production group 1 and the oxygen booster 4 by monitoring and signal feedback of the low-pressure sensor 31, the high-pressure sensor 51 and the oxygen concentration monitor 154.

[0022] Preferably, the emergency oxygen production group 2 is a chemical agent oxygen production group 2a; including an oxygen production water tank 2a1, a medicine bin 2a2 and an oxygen filter box a2a3;

[0023] The medicine bin 2a2 is connected to the oxygen-generating water tank 2a1, and the oxygen filter box a2a3 is used to filter the oxygen at the outlet of the oxygen-generating water tank 2a1.

[0024] Preferably, the emergency oxygen production group 2 is a chemical oxygen candle oxygen production group 2b; the chemical oxygen candle oxygen production group 2b includes an oxygen production box 2b1, an oxygen candle body 2b2, a starter 2b3 and an oxygen filter box b2b4;

[0025] The oxygen candle body 2b2 is placed inside the oxygen generator box 2b1; the starter is located outside the oxygen generator box and is connected to the oxygen candle body 2b2 through a wire; the oxygen filter box b2b4 is placed at the air outlet position of the oxygen generator box 2b1 and is sealed with each other, and a filter element 2b41 is provided inside the oxygen filter box b2b4, and an oxygen outlet connector b2b42 is provided on the top.

[0026] The present invention also provides a PSA oxygen production and emergency oxygen production combined oxygen supply method, comprising the aforementioned PSA oxygen production and emergency oxygen production combined oxygen supply system, comprising the following steps:

[0027] Control the PSA oxygen production group 1 to start and produce oxygen, and the oxygen booster 4 is closed; the emergency oxygen production group 2 does not produce oxygen; when the PSA oxygen production group 1 fails and cannot produce oxygen, the emergency oxygen production group 2 can produce oxygen

[0028] The oxygen concentration monitor 154 in the PSA oxygen generation group 1 monitors the oxygen concentration at the outlet of the PSA oxygen generation group 1 in real time. When the oxygen concentration is lower than 90%, the low-concentration oxygen is discharged; when the oxygen concentration reaches more than 90%, the qualified oxygen is transported into the low-pressure buffer tank 3;

[0029] After oxygen enters the low-pressure buffer tank 3, it is cached and the internal air pressure of the low-pressure buffer tank 3 is monitored. When the internal pressure reaches the preset boost value, the oxygen booster 4 is started to boost the oxygen inside the low-pressure buffer tank 3 and then input it into the high-pressure oxygen storage tank 5; when it is monitored that the air pressure in the low-pressure buffer tank 3 reaches the set maximum safety value, the PSA oxygen production group 1 suspends oxygen production until the air pressure drops, and the PSA oxygen production group 1 restarts oxygen production;

[0030] The oxygen pressurized by the oxygen booster 4 enters the high-pressure oxygen storage tank 5 for storage. When the pressure inside the high-pressure oxygen storage tank 5 reaches a preset high-pressure value, the oxygen booster 4 is turned off; when the oxygen is used and the internal pressure is reduced, the oxygen booster 4 is restarted.

[0031] The portable oxygen supply device 7 is connected to the filler 8 for oxygenation, and after the oxygenation is completed, the connection is disconnected.

[0032] Preferably, the following steps are also included: when the oxygen inhaler uses oxygen, the oxygen-saving outlet 72 of the portable oxygen supply 7 is connected to the oxygen inhalation tube. During normal breathing, the oxygen-saving outlet 72 controls the opening and closing of internal components through the micro-negative pressure generated by the inhalation of the oxygen inhaler, so as to realize respiratory synchronous triggering pulse oxygen supply.

[0033] The PSA oxygen production, emergency oxygen production and combined oxygen use system and oxygen use method of the present invention are small in size, high in space utilization, and have multiple oxygen production schemes, which can realize emergency oxygen supply schemes under special circumstances. The system will store a certain amount of oxygen under normal circumstances in case of emergency.

[0034] In addition, this system also adds an oxygen-saving function during the use of oxygen. Oxygen supply can only be started when we inhale, reducing the waste of continuous oxygen supply and increasing the oxygen inhalation experience for the oxygen inhaler to be more comfortable.

[0035] Compared with the prior art, the beneficial technical effects of the present invention are:

[0036] First, the system is compact and has high space utilization.

[0037] Second, this system adopts a variety of oxygen production solutions to deal with oxygen supply problems in the event of sudden failures.

[0038] Third, this system greatly reduces the technical limitations and costs of oxygen filling.

[0039] The problem of oxygen waste during use is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural block diagram of a PSA oxygen production and emergency oxygen production combined oxygen use system according to an exemplary embodiment of the present invention.

[0041] Figure 2 It is a schematic diagram of the principle of a PSA oxygen production and emergency oxygen production combined oxygen system according to an exemplary embodiment of the present invention.

[0042] Figure 3 for Figure 2 An enlarged schematic diagram of the PSA oxygen production group.

[0043] Figure 4 It is a three-dimensional schematic diagram of a PSA oxygen production and emergency oxygen production combined oxygen system according to an exemplary embodiment of the present invention.

[0044] Figure 5 It is a schematic diagram of the structure of oxygen production by chemical agents according to an exemplary embodiment of the present invention.

[0045] Figure 6 It is a schematic structural diagram of a chemical oxygen candle oxygen production method according to an exemplary embodiment of the present invention.

[0046] Figure 7 The figure is a schematic diagram of the working process of a PSA oxygen production and emergency oxygen production combined oxygen supply system according to an exemplary embodiment of the present invention.

[0047] Among them: 1-PSA oxygen production group, 11-compressor, 12-switching valve, 121-air inlet, 122-air outlet a, 123-air outlet b, 124-return air port, 13-molecular sieve group, 131-molecular sieve tower a, 132-molecular sieve tower b, 14-exhaust muffler, 15-oxygen supply pipeline, 151-check valve, 152-exhaust pipeline, 153-reversing valve, 154-oxygen concentration monitor;

[0048] 2- Emergency oxygen production group, 2a- Chemical oxygen production group, 2a1- Oxygen water tank, 2a11- Box body, 2a12- Feed inlet, 2a13- Oxygen outlet, 2a2- Agent warehouse, 2a21- Oxygen generator warehouse, 2a22- Catalyst warehouse, 2a23- Discharge port, 2a24- Baffle plate, 2a25- Switch, 2a3- Oxygen filter box a, 2a31- Box body, 2a32- Filter element, 2a33- Oxygen outlet connector a, 2a34- Check valve, 2b- Chemical oxygen candle oxygen production group, 2b1- Oxygen production box, 2b2- Oxygen candle body, 2b3- Starter-2b4- Oxygen filter box b, 2b41- Filter element, 2b42- Oxygen outlet connector b;

[0049] 3- low-pressure buffer tank, 31- low-pressure sensor, 32- overflow valve, 4- oxygen booster, 5- high-pressure oxygen storage tank, 51- high-pressure sensor, 52- high-pressure pressure relief mechanism, 6- master control module, 7- portable oxygen supplier, 71- bottle body, 72- oxygen-saving outlet, 73- high-pressure charging connector, 8- filler. DETAILED DESCRIPTION

[0050] The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention, and should not be construed as a limitation of the present invention. In the present invention, the same reference numerals represent the same or similar components.

[0051] The features described herein can be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided to illustrate only some of the many possible ways to implement the methods, devices, and / or systems described herein, which will be clear after understanding the disclosure of the present invention.

[0052] Although terms such as "first", "second", and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions should not be limited by these terms. Instead, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion.

[0053] In the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, or “coupled to” another element, the element may be directly “on”, “connected to”, or “coupled to” another element, or one or more other elements may be present therebetween. Conversely, when an element is described as being “directly on”, “directly connected to”, or “directly coupled to” another element, there may be no other elements present therebetween.

[0054] The terms used herein are only used to describe various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprise", "include" and "have" indicate the presence of the described features, quantities, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0055] In order to enable those skilled in the art to use the contents of the present invention, the following exemplary embodiments may be provided in combination with specific application scenarios, specific systems, parameters of devices and components, and specific connection methods. However, for those skilled in the art, these embodiments are only examples, and the general principles defined herein may be applied to other embodiments and application scenarios without departing from the spirit and scope of the present invention.

[0056] According to an exemplary embodiment of the present invention: Figure 1-6 As shown, a PSA oxygen production and emergency oxygen production combined oxygen system, such as Figure 1 , as shown in FIG4 , it includes a PSA oxygen generator set 1 that can be fixed on the equipment rack, an emergency oxygen generator set 2, a low-pressure buffer tank 3, an oxygen booster 4, a high-pressure oxygen storage tank 5, a master control module 6 and a portable oxygen supply device 7. The PSA oxygen generator and emergency oxygen generator combined oxygen system is micro or small, and can also be called a combined oxygen supply system.

[0057] like Figure 2As shown, the oxygen outlet interfaces of the PSA oxygen generator group 1 and the pharmaceutical oxygen generator group 2 are connected in parallel and then connected to the air inlet of the low-pressure buffer tank 3 through a first pipeline. The air inlet of the oxygen booster 4 is connected to the air outlet of the low-pressure buffer tank 3 through a second pipeline, and the air outlet is connected to the air inlet of the high-pressure oxygen storage tank 5 through a third pipeline. A filler 8 is provided at the air outlet of the high-pressure oxygen storage tank 5, and the filler 8 is used to fill the portable oxygen supply 7 with high-pressure oxygen.

[0058] like Figure 2 , 3, the PSA oxygen production group 1 of the present invention comprises a compressor 11, a switching valve 12 and a molecular sieve group 13. The switching valve 12 comprises an air inlet 121, an air outlet a122, an air outlet b123 and an air return port 124, the air inlet 121 of the switching valve 12 is connected to the air outlet of the compressor 11, and the air outlet a122 and the air outlet b123 of the switching valve 12 are respectively connected to the air inlet ends of the molecular sieve tower a131 and the molecular sieve tower b132 of the molecular sieve group 13.

[0059] The switching valve can switch between a first working state and a second working state; in the first working state, the gas outlet a (122) of the switching valve (12) is connected to the gas inlet end of the molecular sieve tower a (131); the gas outlet b (123) of the switching valve (12) is connected to the gas inlet end and the gas return port (124) of the molecular sieve tower b (132); that is, the gas inlet end of the molecular sieve tower b (132) is connected to the gas outlet b (123), and then connected to the gas return port (124).

[0060] In the second working state, the gas outlet b (123) of the switching valve (12) is connected to the gas inlet end of the molecular sieve tower b (132), and the gas outlet a (122) of the switching valve (12) is connected to the gas inlet end and the gas return port (124) of the molecular sieve tower a (131). That is, the gas inlet end of the molecular sieve tower a (122) is connected to the gas outlet a (122), and further connected to the gas return port (124).

[0061] like Figure 2 , as shown in FIG. 3 , the gas outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132) are connected in parallel and are connected to the low-pressure buffer tank (3) through the oxygen supply pipeline (15); the gas outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132) are both provided with a one-way valve (151), and a reversing valve (153) is provided on the oxygen supply pipeline (15), the gas outlet of the reversing valve (153) is connected to the low-pressure buffer tank, and the gas return port of the reversing valve (153) is connected to the exhaust pipeline (152). The other end of the exhaust pipeline 152 is connected to the gas return port 124 of the switching valve 12.

[0062] like Figure 2As shown, the oxygen outlet connector a2a33 of the oxygen filter box a2a3 is connected to the low-pressure buffer tank 3 through a pipeline, and a one-way valve 2a34 is provided therebetween to prevent gas backflow.

[0063] like Figure 1 As shown in 2, a low-pressure sensor 31 is provided on the low-pressure buffer tank 3 for monitoring the internal air pressure; a high-pressure sensor 51 is provided on the high-pressure oxygen storage tank 5 for monitoring the internal air pressure.

[0064] An oxygen concentration monitor 154 is provided between the reversing valve 153 of the oxygen delivery pipeline 15 and the gas outlet of the molecular sieve group 13 to monitor the oxygen concentration. The master control module 6 controls the working state of the PSA oxygen production group 1 and the oxygen booster 4 by monitoring and signal feedback of the low pressure sensor 31, the high pressure sensor 51 and the oxygen concentration monitor 154.

[0065] like Figure 1 As shown in FIG. 2 , the oxygen booster 4 can pressurize the oxygen in the low-pressure buffer tank 3 from 0.05 to 0.2 MPa to 10 to 30 MPa for storage. The low-pressure buffer tank 3 is provided with an overflow valve 32; the high-pressure oxygen storage tank 5 is provided with a high-pressure relief mechanism 52, and the overflow valve and the high-pressure relief mechanism ensure the internal air pressure safety.

[0066] like Figure 1 As shown in Figure 2, the portable oxygen supply 7 includes a bottle body 71, an oxygen-saving air outlet 72 and a high-pressure air charging connector 73; the oxygen-saving air outlet 72 is placed at the top of the bottle body 71, and the oxygen-saving air outlet 72 controls the opening and closing of the internal components through the micro-negative pressure generated by the oxygen inhaler's inhalation, so as to realize the respiratory synchronous trigger pulse oxygen supply; the high-pressure air charging connector 73 is placed at the bottom of the bottle body 71, which is a high-pressure one-way air intake structure. The filler 8 adopts a high-pressure quick-plug self-locking form, and is connected with the high-pressure air charging connector 73 at the bottom of the portable oxygen supply 7 for filling; the filler 8 is ventilated when connected to the high-pressure air charging connector 73, and the airflow is blocked after the connection is disconnected; the number of fillers 8 can be one or more, and multiple portable oxygen supplies 7 can be filled at the same time. The portable oxygen supply 7 and the filler 8 adopt the existing structure, which will not be repeated here.

[0067] According to an exemplary embodiment of the present invention, Figure 5 As shown, the emergency oxygen production group 2 is driven without electric energy and is a chemical agent oxygen production group 2a. It includes an oxygen production water tank 2a1, a medicine bin 2a2 and an oxygen filter box a2a3. The oxygen production water tank 2a1 includes a box body 2a11 and a feed inlet 2a12 and an oxygen outlet 2a13 at the top. The medicine bin 2a2 is connected to the oxygen production water tank 2a1, and the oxygen filter box a2a3 is used to filter the oxygen at the outlet of the oxygen production water tank 2a1.

[0068] The medicine bin 2a2 includes an oxygen generator bin 2a21, a catalyst bin 2a22 and a discharge port 2a23; the oxygen generator bin 2a21 and the catalyst bin 2a22 are separated by a partition, and are connected to the discharge port 2a23 through respective openable and closable baffle plates 2a24. The feed port 2a12 of the oxygen water tank 2a1 is sealedly connected to the discharge port 2a23 at the bottom of the medicine bin 2a2; the oxygen outlet 2a13 of the oxygen water tank 2a1 is sealedly connected to the box body 2a31 of the oxygen filter box a2a3.

[0069] like Figure 5 As shown, a recessed portion is formed on the body of the oxygen-generating water tank 2a1, and a plurality of holes are formed at the bottom of the recessed portion, and the plurality of holes form an oxygen outlet 2a13 of the oxygen-generating water tank 2a1; the oxygen filter box a2a3 includes a box body 2a31, a filter element 2a32 and an oxygen outlet connector a2a33, and a protrusion that cooperates with the recessed portion is formed at the bottom of the box body 2a31, and a plurality of holes are formed on the bottom surface of the protrusion.

[0070] like Figure 5 As shown, the feed port 2a12 of the oxygen-generating water tank 2a1 is connected to the discharge port 2a23 at the bottom of the medicine bin 2a2 and the periphery is sealed, and the oxygen outlet 2a13 of the oxygen-generating water tank 2a1 is connected to the box body 2a31 of the oxygen filter box a2a3 and the periphery is sealed. The oxygen-generating agent bin 2a21 and the catalyst bin 2a22 of the medicine bin 2a2 are arranged above the discharge port 2a23 and are arranged side by side in the longitudinal direction; a baffle plate 2a24 is arranged between the bottom of the oxygen-generating agent bin 2a21 and the catalyst bin 2a22 and the discharge port 2a23, and the opening and closing of the baffle plate 2a24 is mechanically controlled by a switch 2a25.

[0071] According to an exemplary embodiment of the present invention, Figure 6 As shown, the emergency oxygen production group 2 can also be a chemical oxygen candle oxygen production group 2b in addition to the above-mentioned embodiments; the chemical oxygen candle oxygen production group 2b includes an oxygen production box 2b1, an oxygen candle body 2b2, a starter 2b3 and an oxygen filter box b2b4; the oxygen candle body 2b2 is placed inside the oxygen production box 2b1; the starter 2b3 is connected to the inside of the oxygen candle body 2b2 and is fixed on the outer box body of the oxygen production box 2b1.

[0072] The oxygen filter box b2b4 is placed at the air outlet of the oxygen generator box 2b1 and is sealed with each other. A filter element 2b41 is arranged inside the oxygen filter box b2b4 and an oxygen outlet connector b2b42 is arranged on the top.

[0073] like Figure 6 As shown, a recessed portion is formed on the box body of the oxygen generator 2b1, and a plurality of holes are formed at the bottom of the recessed portion, and the plurality of holes form the oxygen outlet of the oxygen generator 2b1; the oxygen filter box a2a3 includes a box body 2a31, a filter element 2a32 and an oxygen outlet connector a2a33, and a protrusion that cooperates with the recessed portion is formed at the bottom of the box body 2a31, and a plurality of holes are formed on the bottom surface of the protrusion.

[0074] According to an exemplary embodiment of the present invention, Figure 1-7 As shown, a PSA oxygen production and emergency oxygen production combined oxygen use method comprises the following steps:

[0075] Step 1: Under normal circumstances, the system is powered on and started to work. The main control module 6 issues a command to start the PSA oxygen production group 1 to start producing oxygen. The oxygen booster 4 is closed and the emergency oxygen production group 2 does not produce oxygen.

[0076] Step 2: The air inlet of the compressor 11 of the PSA oxygen production group 1 obtains air from the outside. After being pressurized, the high-pressure air is connected to one of the air outlets a122 and the molecular sieve tower a131 through the air inlet 121 of the switching valve 12, and the other air outlet b123 is connected to the molecular sieve tower b132 and the return air port 124.

[0077] The process of high-pressure air entering the molecular sieve tower a131 and pressurizing it to the adsorption pressure includes the high-pressure air intake pressurization and the molecular sieve tower b132 reverse pressurizing it. Among them, the one air inlet and two air outlets of the switching valve 12 are connected for a short period of time during the switching process. At this time, the gas in the high-pressure molecular sieve tower will be inflated into the low-pressure molecular sieve tower, that is, reverse pressurization is formed.

[0078] After the pressure of the molecular sieve tower a131 reaches the adsorption pressure, the molecular sieve selectively adsorbs the nitrogen molecules in the high-pressure air, thereby separating oxygen and nitrogen. After the nitrogen molecules are adsorbed, the oxygen molecules flow out from the outlet of the molecular sieve tower a131. When the air pressure in the molecular sieve tower a131 reaches the set pressure value and the adsorbed nitrogen reaches a certain saturation, the pressure reduction and analysis process begins. By switching the switching valve 12, the nitrogen adsorbed in the molecular sieve tower a131 is discharged through the return air port 124 of the switching valve 12. At the same time, the molecular sieve tower a131 performs a certain reverse pressurization on the molecular sieve tower b132. This process is carried out alternately.

[0079] Step 3: The oxygen concentration monitor 154 in the PSA oxygen production group 1 monitors the oxygen concentration at the outlet of the molecular sieve group 13 in real time, and provides feedback signals to the master control module 6. When the oxygen concentration is lower than 90%, the master control module 6 controls the reversing valve 153 to discharge the low-concentration oxygen together with nitrogen from the return port 124 of the switching valve 12 through the exhaust pipe 152. When the oxygen concentration monitor 154 detects that the outlet oxygen reaches more than 90%, it promptly feeds back the signal to the master control module 6 to control the reversing valve 153 to transport qualified oxygen into the low-pressure buffer tank 3.

[0080] Step 4: After oxygen enters the low-pressure buffer tank 3, it is cached. The low-pressure sensor 31 monitors the internal air pressure of the tank. When the internal pressure reaches the preset boost value, the low-pressure sensor 31 feeds back a signal to the master control module 6. The master control module 6 issues an instruction to start the oxygen booster 4 to start boosting the oxygen inside the low-pressure buffer tank 3 and then input it into the high-pressure oxygen storage tank 5. When the low-pressure sensor 31 monitors that the air pressure inside the low-pressure buffer tank 3 reaches the set maximum safety value, it feeds back a signal to the master control module 6. The master control module 6 issues an instruction to the PSA oxygen production group 1 to suspend oxygen production until the internal air pressure drops. The PSA oxygen production group 1 will restart oxygen production.

[0081] Step 5: The oxygen pressurized by the oxygen booster 4 enters the high-pressure oxygen storage tank 5 for storage. When the oxygen is not used temporarily, after the pressure inside the high-pressure oxygen storage tank 5 reaches the preset high-pressure value, the high-pressure sensor 51 will feedback a signal to the main control module 6, and the main control module 6 will issue an instruction to shut down the oxygen booster 4. When the oxygen is used and the internal pressure is reduced, the oxygen booster 4 will restart.

[0082] Step 6: Connect the portable oxygen supply 7 to the filler 8 at the outlet end of the high-pressure oxygen storage tank 5 through the high-pressure charging connector 73 at the bottom for oxygenation. After the oxygenation is completed, simply disconnect the connection. The filler 8 is a high-pressure quick-plug self-locking type. It is ventilated when connected to the high-pressure charging connector 73, and the airflow is blocked after the connection is disconnected. The system can charge multiple portable oxygen supplies 7 at the same time.

[0083] Step 7: When the oxygen inhaler uses oxygen, the oxygen-saving outlet 72 of the portable oxygen supply device 7 is connected to the oxygen inhalation tube. During normal breathing, the oxygen-saving outlet 72 controls the opening and closing of the internal components through the micro-negative pressure generated by the oxygen inhaler's inhalation, so as to realize the respiratory synchronous trigger pulse oxygen supply.

[0084] Step 8: When an abnormal situation occurs and the PSA oxygen production group 1 fails to produce oxygen, oxygen can be produced by the emergency oxygen production group 2 and continue to be transported to the low-pressure buffer tank 3.

[0085] According to an exemplary embodiment of the present invention, the emergency oxygen production group (2) can produce oxygen by two embodiments;

[0086] ① Chemical oxygen production: The oxygen production water tank 2a1 of the chemical oxygen production group 2a contains pure water, and the two chambers of the reagent bin 2a2 are respectively filled with oxygen generators and catalysts. When oxygen production is required, the switch 2a25 is manually pressed, and the baffle plate 2a24 at the bottom of the oxygen generator bin 2a21 and the catalyst bin 2a22 is opened, and the oxygen generator and the catalyst fall off from the discharge port 2a23 and enter the oxygen production water tank 2a1, dissolve and fuse in the water, and start to produce oxygen. After the oxygen generator and the catalyst enter the oxygen production water tank 2a1, the baffle plate 2a24 automatically resets and closes. Exemplarily, the baffle plate 2a24 can be hinged, one end can be hingedly fixed on the box body, and the other end is a free end, which rests on the baffle plate. Reset can be achieved by a torsion spring, which can be fixed on the hinge shaft to keep the baffle plate 2a24 in the initial position. The oxygen generated by the chemical reaction between the oxygen generator and the catalyst in the water passes through the oxygen filter box a2a3, is filtered by the filter element 2a32, and is output from the oxygen outlet connector a2a33 and enters the low-pressure buffer tank 3.

[0087] ② Oxygen production by chemical oxygen candle method: The oxygen production box 2b1 of the chemical oxygen candle oxygen production group 2b is equipped with an oxygen candle body 2b2. When oxygen production is needed, the starter 2b3 on the outer box body of the oxygen production box 2b1 is manually pressed. The starter 2b3 is connected to the inside of the oxygen candle body 2b2, and the friction between the front end and the internal metal powder fuel generates heat to start a chemical reaction. The heat emitted during the chemical reaction can make the chlorate inside the oxygen candle body 2b2 release oxygen; the oxygen passes through the oxygen filter box b2b4 at the outlet of the oxygen production box 2b1, is filtered by the filter element 2b41, and is output from the oxygen outlet connector b2b42 and enters the low-pressure buffer tank 3.

[0088] The micro oxygen production, storage, supply and conservation system of the present invention and its implementation method mainly include PSA oxygen production group, emergency oxygen production group, low-pressure buffer tank, oxygen booster, high-pressure oxygen storage tank, master control module and portable oxygen supply device. The master control module can detect and control each functional module group, and intelligently control the working state of the oxygen production system and the boosting system by detecting the pressure, concentration and flow of the gas in the pipeline. The PSA oxygen production group and the pharmaceutical oxygen production group can produce oxygen in different ways. The output low-pressure oxygen enters the low-pressure buffer tank for temporary storage, and can be converted into high-pressure oxygen after passing through the oxygen booster, stored in the high-pressure oxygen storage tank, and filled into the portable oxygen supply device for oxygen inhalers. This system can realize various forms such as oxygen production, storage, supply and conservation, can cope with the oxygen supply needs of different scenarios, has reliable performance, simple operation, and low failure rate. It is an ideal equipment for medical oxygen production in high-altitude areas or areas with underdeveloped transportation.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to the embodiments and combinations of elements may be made without departing from the principles and spirit of the invention, the scope of the invention being defined by the appended claims and their equivalents.

Claims

1. A PSA oxygen production and emergency oxygen production combined oxygen system, characterized by: include: PSA oxygen generator (1), emergency oxygen generator (2), low-pressure buffer tank (3), oxygen booster (4), high-pressure oxygen storage tank (5), filler and portable oxygen supply device (7); The oxygen outlet interfaces of the PSA oxygen production group (1) and the emergency oxygen production group (2) are connected in parallel and then connected to the air inlet of the low-pressure buffer tank (3) through a first pipeline; The air outlet of the low-pressure buffer tank (3) is connected to the air inlet of the oxygen booster (4) via a second pipeline, and the air outlet of the oxygen booster (4) is connected to the air inlet of the high-pressure oxygen storage tank (5) via a third pipeline; The gas outlet of the high-pressure oxygen storage tank (5) is communicated with the filler (8); The filler (8) is used to fill the portable oxygen supply device (7) with high-pressure oxygen; The emergency oxygen production group is a chemical oxygen production group.

2. The oxygen system according to claim 1, characterized in that: It also includes a master control module, which is respectively connected to the PSA oxygen production group (1), the emergency oxygen production group (2), the low-pressure buffer tank (3), the oxygen booster (4), and the high-pressure oxygen storage tank (5).

3. The oxygen system according to claim 2, characterized in that: The PSA oxygen production group (1) comprises a compressor (11), a switching valve (12) and a molecular sieve group (13); the molecular sieve group (13) comprises a molecular sieve tower a (131) and a molecular sieve tower b (132); The switching valve (12) comprises an air inlet (121), an air outlet a (122), an air outlet b (123) and an air return port (124); The air inlet (121) of the switching valve (12) is communicated with the air outlet of the compressor (11); The switching valve can switch between a first working state and a second working state; In the first working state, the gas outlet a (122) of the switching valve (12) is connected to the gas inlet end of the molecular sieve tower a (131); the gas outlet b (123) of the switching valve (12) is connected to the gas inlet end and the gas return port (124) of the molecular sieve tower b (132); In the second working state, the gas outlet b (123) of the switching valve (12) is connected to the gas inlet end of the molecular sieve tower b (132); the gas outlet a (122) of the switching valve (12) is connected to the gas inlet end and the gas return port (124) of the molecular sieve tower a (131).

4. The oxygen system according to claim 3, characterized in that: The gas outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132) are connected in parallel and communicated with the low-pressure buffer tank (3) through an oxygen supply pipeline (15).

5. The oxygen system according to claim 4, characterized in that: A one-way valve (151) is provided at the gas outlet end of the molecular sieve tower a (131) and the molecular sieve tower b (132), and a reversing valve (153) is provided on the oxygen supply pipeline (15), the gas outlet of the reversing valve (153) is connected to the low-pressure buffer tank (3), and the gas return port of the reversing valve (153) is connected to the exhaust pipeline (152).

6. The oxygen utilization system according to claim 5, characterized in that: A low-pressure sensor (31) is arranged on the low-pressure buffer tank (3); a high-pressure sensor (51) is arranged on the high-pressure oxygen storage tank (5); an oxygen concentration monitor (154) is arranged between the reversing valve (153) of the oxygen supply pipeline (15) and the gas outlet of the molecular sieve group (13); and the main control module (6) controls the working state of the PSA oxygen production group (1) and the oxygen booster (4) by monitoring the low-pressure sensor (31), the high-pressure sensor (51) and the oxygen concentration monitor (154) and providing signal feedback.

7. The oxygen utilization system according to claim 1, characterized in that: The emergency oxygen production group (2) is a chemical agent oxygen production group (2a); it includes an oxygen production water tank (2a1), a chemical agent bin (2a2) and an oxygen filter box a (2a3); The medicine bin (2a2) is connected to the oxygen-generating water tank (2a1), and the oxygen filter box a (2a3) is used to filter the oxygen at the outlet of the oxygen-generating water tank (2a1).

8. The oxygen system according to claim 1, characterized in that: The emergency oxygen production group (2) is a chemical oxygen candle oxygen production group (2b); the chemical oxygen candle oxygen production group (2b) comprises an oxygen production box (2b1), an oxygen candle body (2b2), a starter (2b3) and an oxygen filter box b (2b4); The oxygen candle body (2b2) ​​is placed inside the oxygen production box (2b1); the starter is located outside the oxygen production box and is connected to the oxygen candle body (2b2) ​​via a wire; the oxygen filter box b (2b4) is placed at the gas outlet of the oxygen production box (2b1) and is sealed with each other, a filter element (2b41) is provided inside the oxygen filter box b (2b4), and an oxygen outlet connector b (2b42) is provided on the top.

9. A PSA oxygen production and emergency oxygen production combined oxygen supply method, characterized in that: The PSA oxygen production and emergency oxygen production combined oxygen supply system according to any one of claims 1 to 8 comprises the following steps: The PSA oxygen production group (1) is controlled to start and produce oxygen, and the oxygen booster (4) is turned off; the emergency oxygen production group (2) does not produce oxygen; when the PSA oxygen production group (1) fails and cannot produce oxygen, oxygen can be produced by the emergency oxygen production group (2) The oxygen concentration monitor (154) in the PSA oxygen production group (1) monitors the oxygen concentration at the outlet of the PSA oxygen production group (1) in real time. When the oxygen concentration is lower than 90%, the low-concentration oxygen is discharged; when the oxygen concentration reaches more than 90%, the qualified oxygen is transported into the low-pressure buffer tank (3); After oxygen enters the low-pressure buffer tank (3), it is buffered and the internal air pressure of the low-pressure buffer tank (3) is monitored. When the internal pressure reaches a preset boost value, the oxygen booster (4) is started to boost the oxygen inside the low-pressure buffer tank (3) and then input it into the high-pressure oxygen storage tank (5); when it is monitored that the air pressure inside the low-pressure buffer tank (3) reaches the set maximum safety value, the PSA oxygen production group (1) suspends oxygen production until the air pressure drops, and the PSA oxygen production group (1) restarts oxygen production; The oxygen pressurized by the oxygen booster (4) enters the high-pressure oxygen storage tank (5) for storage. When the pressure inside the high-pressure oxygen storage tank (5) reaches a preset high pressure value, the oxygen booster (4) is turned off; when the oxygen is used and the internal pressure is reduced, the oxygen booster (4) is restarted. The portable oxygen supply device (7) is connected to the filler (8) to perform oxygenation, and after the oxygenation is completed, the connection is disconnected.

10. The oxygen utilization method according to claim 9, characterized in that: The method also includes the following steps: when the oxygen inhaler uses oxygen, the oxygen-saving outlet (72) of the portable oxygen supply device (7) is connected to the oxygen inhalation tube; during normal breathing, the oxygen-saving outlet (72) controls the opening and closing of the internal components through the micro-negative pressure generated by the oxygen inhaler's inhalation, thereby realizing respiratory synchronous trigger pulse oxygen supply.

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