Vehicle-mounted oxygen generation, oxygen storage and oxygenation integrated device

Abstract

The invention relates to the field of mobile oxygen generation, oxygen storage and oxygen filling technologies, in particular to a vehicle-mounted oxygen generation, oxygen storage and oxygen filling integrated device which comprises an equipment bin, and an air compressor is arranged in the equipment bin; the filter assembly is connected with the air compressor and is used for filtering impurities in air; the ordinary oxygen tower internally contains a molecular sieve, is connected with the filtering assembly, receives the output gas of the filtering assembly, adsorbs nitrogen molecules of the gas in the tower and outputs high-oxygen-content gas; an argon adsorbent is contained in the pure oxygen tower, and the pure oxygen tower is connected with the ordinary oxygen tower, receives the high-oxygen-content gas output by the ordinary oxygen tower, absorbs argon in the high-oxygen-content gas and outputs the high-oxygen-content gas; the circulating compressor is connected with the pure oxygen tower and is used for extracting output gas of the pure oxygen tower and boosting; and the pure oxygen storage tank is connected with the circulating compressor and stores the high-pressure gas output by the circulating compressor. The device has the effect of efficiently and quickly providing high-quality oxygen in an infinite manner.

Description

Technical Field

[0001] The present application relates to the field of mobile oxygen generation, storage, and filling technologies, and particularly to an in-vehicle integrated oxygen generation, storage, and filling device. Background Art

[0002] In situations such as the epidemic, emergency rescue, and high-altitude flight, oxygen supply is the most crucial link in ensuring the survival of patients, the wounded, pilots, etc. Oxygen cylinders can provide life support to victims in accidents. Under the existing technology, in the epidemic and emergency rescue, mainly cargo trucks are used to transport oxygen cylinders or mobile oxygen generation vehicles to the rescue site to provide oxygen to patients or the wounded. If the oxygen cylinder supply method is adopted, problems such as insufficient oxygen cylinder supply may occur due to the limited capacity and quantity of oxygen cylinders and the incorrect estimation of oxygen supply by rescue personnel. If a mobile oxygen generation vehicle is used for oxygen supply, it takes a certain amount of time to produce oxygen of qualified purity, which is not suitable for rapid emergency rescue situations and seriously delays the rescue efficiency.

[0003] In aircraft support, mainly oxygen cylinders or oxygen filling vehicles are used to replenish oxygen in the oxygen cylinders on the aircraft. The oxygen in the oxygen cylinders and oxygen filling vehicles is affected by factors such as the procurement cycle and the filling and replenishing method, and it is difficult to guarantee the oxygen storage capacity and oxygen quality.

[0004] Regarding the above related technologies, if the oxygen generation, storage, and filling devices are integrated and designed in mobile devices such as vehicles, in emergency rescue, oxygen generation starts and is stored before the vehicle departs. When arriving at the disaster area, oxygen can be directly supplied and the oxygen generation state can be maintained. Thus, fresh oxygen supply of high quality and sufficient storage can be achieved in emergency guarantee situations such as the epidemic and emergency rescue. Summary of the Invention

[0005] In order to provide high-quality oxygen efficiently, quickly, and in an unlimited amount, the present invention provides an in-vehicle integrated oxygen generation, storage, and filling device.

[0006] The in-vehicle integrated oxygen generation, storage, and filling device provided by the present invention adopts the following technical solution: An in-vehicle integrated oxygen generation, storage, and filling device includes an equipment compartment, the equipment compartment is movably arranged, and an air compressor is arranged in the equipment compartment to compress air and output it. It is characterized in that it further includes: A filtering assembly, connected to the air compressor, for filtering solid particles, oil, and moisture mixed in the air; A common oxygen tower, which contains molecular sieves inside, is connected to the filtering assembly, receives the output gas of the filtering assembly, adsorbs nitrogen molecules in the gas in the tower, and outputs gas with a high oxygen content; A pure oxygen tower, which contains argon adsorbent inside, is connected to the common oxygen tower, receives the high-oxygen-content gas output by the common oxygen tower, absorbs argon in the high-oxygen-content gas, and outputs it; A circulating compressor is connected to the pure oxygen tower to extract the output gas of the pure oxygen tower and increase the pressure; The pure oxygen storage tank is connected to the circulating compressor and stores the high-pressure gas output by the circulating compressor.

[0007] By adopting the above technical solution, the equipment warehouse should be set inside the movable vehicle body, specifically on the vehicle body chassis, and the general vehicle body can be selected as an oxygen-making vehicle; when carrying out emergency rescue, the oxygen-making vehicle pre-makes oxygen before departure to ensure that sufficient oxygen is prepared in the vehicle for use at any time when arriving at the disaster area. After arriving at the disaster area, the oxygen-making vehicle should maintain the oxygen-making state to ensure sufficient oxygen supply; After the oxygen production process is started, the air compressor absorbs air from the environment, increases the pressure, and initially increases the pressure in the air to facilitate subsequent pressurization. The compressed air is filtered by the filter assembly to remove solid particles, oil, and moisture in the air, and is transported to the subsequent general oxygen tower as raw gas; the molecular sieve in the general oxygen tower is a material with a uniform microporous structure. It uses the differences in molecular size and polarity to extract nitrogen and carbon dioxide inside the molecules and purify oxygen. The general oxygen tower can output oxygen with a purity of 93%-95%; the high-purity oxygen output from the general oxygen tower is transported to the pure oxygen tower. The argon adsorbent in the pure oxygen tower removes the relatively high content of argon in the high-purity oxygen to avoid situations where high-purity oxygen is required, and the presence of argon reduces the purity and safety of oxygen; the circulating compressor extracts the further purified oxygen in the pure oxygen tower and outputs it to the pure oxygen storage tank for storage, waiting for subsequent use; the purity of the oxygen output from the pure oxygen tower can reach 99.5%, which is sufficient to meet the requirements of use in situations where high-concentration oxygen is required; After the oxygen production vehicle arrives at the disaster area, the above oxygen production is maintained and oxygen is continuously transported to the pure oxygen storage tank.

[0008] Optionally, the filter assembly includes a filter group and an adsorption dryer connected in sequence, and the filter group is composed of a plurality of filters connected in parallel.

[0009] By adopting the above technical solution, the filter group is composed of multiple filters connected in parallel and connected to the adsorption dryer, thereby expanding multiple air circulation channels, improving the efficiency of air purification in the oxygen production process, and greatly increasing the amount of air that the filter assembly can filter at the same time; In the above scheme, the filter adopts a three-stage filter with a filtering accuracy of micron level. It and the adsorption dryer perform their respective functions. Specifically, the filter group is mainly used to remove larger particles such as dust and sand in the air and intercept solid particles with larger particle sizes. These particles enter the subsequent components and easily cause mechanical wear, reducing the service life and operating efficiency of the equipment. In addition, the air also contains impurities such as oil, which are easy to affect the purity of oxygen if not removed. In summary, the filter group is mainly used to remove dust and oil in the air to ensure the higher purity of the subsequent output oxygen. The adsorption dryer is mainly used to remove moisture in the air during the oxygen production process, provide dry raw gas for the oxygen production process, further improve the purity and quality of oxygen, and ensure the dryness of the subsequent oxygen. In addition, the adsorption dryer removes moisture and reduces humidity, reducing the risks of oxidation and short circuit caused by subsequent humidity, and providing high-quality oxygen. In summary, the adsorption dryer is mainly used to further purify oxygen and protect the subsequent oxygen production device.

[0010] Optionally, two of the ordinary oxygen towers and the pure oxygen towers are arranged in parallel. Both of the two ordinary oxygen towers are connected to the filtration assembly, and stop valves and pneumatic valves are arranged in the pipelines between the two ordinary oxygen towers and the filtration assembly. Both of the two pure oxygen towers are connected to the two ordinary oxygen towers, and the stop valves and the pneumatic valves are arranged in the pipelines between the two ordinary oxygen towers and the two pure oxygen towers.

[0011] By adopting the above technical solution, both the ordinary oxygen tower and the pure oxygen tower are important components in the process of manufacturing high-purity oxygen and are used to purify oxygen. Since it takes a certain reaction time for the molecular sieve in the ordinary oxygen tower to remove other gas molecules in the air and for the argon adsorbent in the pure oxygen tower to remove argon molecules, two ordinary oxygen towers and two pure oxygen towers are set. When one of the ordinary oxygen towers and one of the pure oxygen towers are operating and reacting, through the state switching of the stop valve and the pneumatic valve, the gas transported from the front end is guided to the other ordinary oxygen tower and the other pure oxygen tower, and the same oxygen purification is carried out in the other ordinary oxygen tower and the other pure oxygen tower, thereby improving the efficiency of producing high-purity oxygen. During the oxygen production process, the stop valve and the pneumatic valve should operate simultaneously in a timely manner to timely cut off the ordinary oxygen tower and the pure oxygen tower in the full air pressure state and guide the air to the other ordinary oxygen tower and the other pure oxygen tower in a timely manner.

[0012] Optionally, it further includes: An air buffer tank, which is arranged between the ordinary oxygen tower and the filtration assembly; An ordinary oxygen buffer tank; which is arranged between the pure oxygen tower and the ordinary oxygen tower.

[0013] By adopting the above technical solution, both the air buffer tank and the ordinary oxygen buffer tank play a buffering role and have the same structure. The main functions of the two buffer tanks are to balance the pressure and purity of oxygen and ensure the continuity and stability of oxygen supply. In the above solution, the two ordinary oxygen towers and the two pure oxygen towers need to be switched, and the gas circuit of the valve is cut off during the switching process, resulting in gas backflow. The air buffer tank and the ordinary oxygen buffer tank can temporarily store the backflow of other substances at the back end, reduce the air flow fluctuation, and the weakening of the air flow fluctuation of the ordinary oxygen buffer tank can protect the bed layer where the molecular sieve is set in the ordinary oxygen tower and extend the service life. The ordinary oxygen tower and the pure oxygen tower are important components for purifying oxygen. A buffer tank is arranged between them, and a buffer tank is arranged before them. The buffer tank can build a tank body for temporarily storing gas during the oxygen purification process, avoiding the frequent start and stop of some components in the oxygen production components in some accidental situations, resulting in scattered gas, and playing a protective role; In summary, the air buffer tank is arranged in front of the ordinary oxygen tower in the air flow direction, and the ordinary oxygen buffer tank is arranged in front of the pure oxygen tower in the air flow direction, ensuring the stability and safety of oxygen supply, prolonging the service life of the equipment, and reducing the maintenance cost.

[0014] Optionally, it further includes: A regeneration tank is arranged between the pure oxygen tower, the ordinary oxygen tower, and the pure oxygen storage tank.

[0015] By adopting the above technical solution, the regeneration tank is arranged among the three. The high-purity oxygen released from the pure oxygen storage tank and the pure oxygen tower is recovered and transported to the ordinary oxygen tower, and the high-purity oxygen is used to increase the oxygen concentration in the ordinary oxygen tower, improving the efficiency of oxygen purification; During the oxygen production process, the adsorbents and molecular sieves in the pure oxygen tower, the ordinary oxygen tower, etc. will adsorb nitrogen, argon, and other impurities in the air, and will also adsorb a large amount of oxygen molecules in the pure oxygen tower and the ordinary oxygen tower. Over time, the adsorbents and molecular sieves gradually reach a saturated state, and the adsorption efficiency decreases, and regeneration is required. During the regeneration process, the adsorbed gas impurity molecules and a large amount of oxygen molecules need to be released, resulting in the release of a large amount of high-purity oxygen. If not recovered, these high-purity oxygen will be discharged into the atmosphere and wasted. Therefore, setting up a regeneration tank to collect this part of oxygen for reuse can improve the overall utilization rate of oxygen and reduce the oxygen production cost; within a single oxygen production cycle of the ordinary oxygen tower, the regeneration tank transports the collected oxygen to the ordinary oxygen tower to achieve flexible allocation and use; During the regeneration process of the above-mentioned adsorbents and molecular sieves, the large release of gas will cause the air pressure in the entire oxygen production device, especially the air pressure in the pure oxygen tower and the ordinary oxygen tower, to rise rapidly. At this time, opening the regeneration tank can play a buffering role, smooth the pressure change, and protect the oxygen production equipment from impact.

[0016] Optionally, it further includes: An oxygen cylinder group is composed of multiple oxygen cylinders. The oxygen cylinder group is connected to the pure oxygen storage tank, and a cylinder filling valve is arranged between the oxygen cylinder group and the pure oxygen storage tank; An oil-free oxygen booster is arranged between the pure oxygen storage tank and the cylinder filling valve; A circulating exhaust valve is arranged between the oil-free oxygen booster and the cylinder filling valve and is connected to the atmosphere.

[0017] By adopting the above technical solution, the oxygen cylinder group is used to store the oxygen prefabricated in the above-mentioned pure oxygen storage tank in advance; after the vehicle arrives at the disaster area, the oxygen in the pure oxygen storage tank is boosted by an oil-free oxygen booster, and the prepared oxygen is injected into multiple oxygen cylinders of the oxygen cylinder group for storage under the condition that the gas cylinder filling valve is opened. Then, the rescue personnel transport the oxygen cylinders to the oxygen-required environment for application, quickly and efficiently carrying out rescue and disaster relief operations; There is air stored in the pipelines at the front and rear parts of the oil-free oxygen booster. If it is not removed, when the above-mentioned oxygen is filled, the oxygen will push the air into the oxygen cylinders, which will greatly affect the quality of the air in the cylinders. Therefore, a circulating drain valve is set between the oil-free oxygen booster and the gas cylinder filling valve. At the beginning of oxygen filling, keep the gas cylinder filling valve closed for a period of time, open the circulating drain valve and the oil-free oxygen booster, so that the pure oxygen fills the pipeline space at the front end of the gas cylinder filling valve. After the pure oxygen is discharged from the circulating drain valve to the atmosphere, close the circulating drain valve and keep it in a locked state, and then open the gas cylinder filling valve to start the oxygen filling process; for the pipeline at the front end of the oil-free oxygen booster, an ordinary valve can be set under normal pressure.

[0018] Optionally, it further includes: A 25MPa filling valve, connected to the oil-free oxygen booster, with an external filling interface provided on one side; A 15MPa filling valve, connected in parallel with the 25MPa filling valve to the oil-free oxygen booster. An external filling interface is connected to one side of the 15MPa filling valve, and a pressure reducer is provided between the 15MPa filling valve and the external filling interface.

[0019] By adopting the above technical solution, after oxygen production, in addition to the oxygen filling of the oxygen cylinder group, another two oxygen supply channels are provided, providing oxygen supply channels of 15MPa and 25MPa for the oxygen production vehicle to be applicable to different oxygen demand occasions; The oxygen in the above-mentioned pure oxygen storage tank is transported to the oxygen cylinder group for storage, which is the first function of the oxygen filling vehicle; the second function is that the pure oxygen in the pure oxygen storage tank is transported to the 25MPa filling valve through the oil-free oxygen booster and output after being reduced to 25MPa, applicable to occasions with high-pressure oxygen demand; the third function is that the pure oxygen in the pure oxygen storage tank is transported to the 15MPa filling valve through the oil-free oxygen booster and output after being reduced to 15MPa, adapting to low-pressure oxygen storage occasions. For occasions with low-pressure oxygen demand, the air pressure of 15MPa is still relatively high. Therefore, a pressure reducer of 0-15MPa needs to be set to reduce the oxygen after the 15MPa filling valve to low-pressure oxygen storage for output use; Specifically, the oxygen supply of 25 MPa is generally applied to positive pressure air respirators. Such respirators have a relatively high oxygen storage pressure to provide sufficient oxygen pressure, enabling users to use the respirator for a long time in dangerous environments. They are suitable for large-scale anti-natural disaster, fire fighting, and the occasion where divers carry oxygen cylinders for rescue operations. Therefore, considering that the filling interface of the 25 MPa filling valve is designed to be directly connected to a high-pressure oxygen cylinder or other high-pressure gas storage sources, its structure and sealing performance can withstand high pressures and do not require an additional pressure reducing device to reduce the pressure. Thus, a pressure reducer is not provided. The oxygen supply of 15 MPa is generally applied to hyperbaric oxygen therapy and some special industrial uses, such as improving microcirculation, promoting wound healing, and treating hypoxic diseases. It is suitable for supplying oxygen to disaster victims in emergency situations during disaster relief to maintain their vitality.

[0020] Optionally, it further includes: An oxygen supply filling valve, which is connected in parallel to the 15 MPa filling valve and the 25 MPa filling valve to connect to the pure oxygen storage tank. One side is provided with an oxygen inhalation end and an oxygen humidifier. A pressure reducer is provided between the oxygen supply filling valve and the oxygen inhalation terminal.

[0021] By adopting the above technical solution, a fourth group of functions is set between the above three groups of functions, that is, it can supply oxygen to disaster victims in emergency situations for timely oxygen inhalation. Therefore, the oxygen supply port filling valve is an atmospheric pressure filling valve, which reduces the oxygen in the pure oxygen storage tank to atmospheric pressure and transports it to the oxygen inhalation terminal for direct oxygen inhalation by the user. Correspondingly, a common oxygen inhalation device, namely an oxygen humidifier, is equipped.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Adopting a modular design, integrating the functions of oxygen generation, oxygen filling, and oxygen storage, and centrally installing them in the vehicle equipment compartment, the emergency guarantee is efficient and fast. 2. Optimizing the oxygen generation and oxygen filling process flows, reducing intermediate links, and effectively reducing the risk of oxygen quality degradation during the oxygen filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the present application.

[0025] Figure 3 It is a flowchart during the oxygen generation process in an embodiment of the present application.

[0026] Figure 4 It is a flowchart during the oxygen delivery process in an embodiment of the present application.

[0027] Description of reference numerals: 1. Equipment bin; 11. Oil-free oxygen booster; 12. Air buffer tank; 13. General oxygen buffer tank; 14. Regeneration tank; 15. Circulation compressor; 16. Air compressor; 17. Filter group; 171. Adsorption dryer; 18. General oxygen tower; 19. Pure oxygen tower; 2. Oxygen cylinder group; 21. Pure oxygen storage tank; 22. Cylinder filling valve; 23. 25MPa filling valve; 24. 15MPa filling valve; 25. Oxygen supply filling valve. Detailed implementation manners

[0028] The following further elaborates on this application Figures 1-3 in conjunction with the attached drawings.

[0029] An embodiment of this application discloses an on-vehicle integrated device for oxygen generation, oxygen storage, and oxygen filling. Referring to Figure 1 , an on-vehicle integrated device for oxygen generation, oxygen storage, and oxygen filling includes an oxygen generation device, an oxygen storage device, and an oxygen filling device connected by pipelines. The oxygen generation device prepares pure oxygen, the oxygen storage device temporarily stores the manufactured pure oxygen, and the oxygen filling device releases the oxygen stored in the oxygen storage device for supply and use. Generally, the integrated device for oxygen generation, oxygen storage, and oxygen filling in this embodiment is applied to disaster relief scenarios. The integrated device for oxygen generation, oxygen storage, and oxygen filling is arranged in an oxygen generation and filling vehicle. An equipment bin 1 is provided on the vehicle body floor of the oxygen generation and filling vehicle, and the oxygen generation device, the oxygen storage device, and the oxygen filling device are installed in the equipment bin 1 for protection.

[0030] Oxygen generation device: Referring to Figure 2 and Figure 3 , the oxygen generation device includes an air compressor 16, a filter assembly, an air buffer tank, a general oxygen tower 18, a general oxygen buffer tank 13, a pure oxygen tower 19, and a circulation compressor 15 that are sequentially connected and arranged on the vehicle body chassis, i.e., the bottom wall of the equipment bin 1.

[0031] In this embodiment, the air compressor 16 is selected as a compressor with a rated working pressure of 0.75MPa and an installed power of 22KW. When generating oxygen, the compressor extracts ambient air as the raw material gas, compresses the raw material gas to 0.75MPa, and then transports it to the filter assembly for filtration. The primary reason for selecting 0.75MPa as the pressure point in this embodiment is that the pressure point of 0.75MPa can better balance the adsorption cycle and regeneration cycle of the subsequent adsorbent and molecular sieve, enabling longer adsorption and faster regeneration. The secondary reason is to reasonably balance the energy consumption of the compressor and the air compression ratio.

[0032] The filtering component selects the filter group 17 and the adsorption dryer 171. Among them, the filter selects a three-stage filter with a filtration accuracy of up to 0.01 microns. Multiple filters are connected in parallel to form a gas filtration channel, which is connected to the adsorption dryer 171. The filter group 17 is mainly used to remove larger particulate matters such as dust and sand grains in the air and intercept solid particles with larger particle sizes; the adsorption dryer 171 selects a dryer with an inlet air pressure of 1.0 MPa and an air treatment capacity of not less than 4 Nm³ / min, which is mainly used to remove moisture and carbon dioxide mixed in the air and dry the raw air input by the air compressor 16. Thus, after the air is pretreated by the filter group 17 and the adsorption dryer 171, most of the solid particles, oil, and moisture are removed, providing dry raw air for the oxygen purification process.

[0033] Two common oxygen towers 18 are set up, both designed with Q345R material and equipped with JLOX-100 type nitrogen adsorbents, namely molecular sieves, inside to remove nitrogen with a relatively high content in the air and produce high-oxygen content gas with a purity of 93%-95% and output it to the pure oxygen tower 19; to extend the maintenance cycle of the common oxygen tower 18, it is necessary to limit the performance of the nitrogen adsorbent, with its packing density at least 620 kg / m3 and the packing amount not less than 135 kg. The two common oxygen towers 18 alternate for nitrogen adsorption and oxygen purification. The flow situation between the common oxygen tower 18 and the adsorption dryer 171 is switched through a globe valve and a pneumatic valve. When one common oxygen tower 18 is in a saturated state and in the oxygen purification cycle, the globe valve cuts off the flow between this common oxygen tower 18 and the filtering component. At the same time, the globe valve of the other common oxygen tower 18 is opened, and the pneumatic valve switches the air flow transmission circuit to transport the raw air to the other common oxygen tower 18.

[0034] The pure oxygen tower 19 is the same as the common oxygen tower 18, with two sets set up and both designed with Q345R material. An argon adsorbent is arranged inside the pure oxygen tower 19, and the argon adsorbent is carried on the bed layer. The high-oxygen content gas output from the above-mentioned common oxygen tower 18 is transported to the pure oxygen tower 19, and the argon adsorbent with a relatively high content in the air is removed, and the oxygen is further purified. The concentration of the purified oxygen can reach 99.5%; the high-purity oxygen in the pure oxygen tower 19 is extracted by the circulation compressor 15 and transported to the subsequent oxygen storage device.

[0035] The circulation compressor 15 adopts an oil-free piston compressor, which is an existing technology.

[0036] To improve the flow stability of the air and high-purity oxygen in the above-mentioned oxygen production device, an air buffer tank is set between the common oxygen tower 18 and the adsorption dryer 171; another buffer tank, namely the common oxygen buffer tank 13, is set between the pure oxygen tower 19 and the common oxygen tower 18. The two buffer tanks have the same structure, caching the air flow and stabilizing the pressure, and reducing the internal pressure fluctuation of the oxygen production device.

[0037] Considering that a large number of oxygen molecules in the pure oxygen tower 19 and the general oxygen tower 18 during the oxygen production process will also be adsorbed in large amounts, when the molecular sieve and the adsorbent are saturated, the adsorbed gas is released for regeneration. During the regeneration process, a large amount of high-purity oxygen is released. The regeneration tank 14 collects this high-purity oxygen and transports it to the general oxygen tower 18.

[0038] Oxygen storage device: Referring to Figure 2 and Figure 3 , the oxygen storage device includes a pure oxygen storage tank 21 and an oxygen cylinder bank 2.

[0039] The pure oxygen storage tank 21 has the same structure as the above-mentioned general oxygen buffer tank 13 and the air buffer tank, and is used to store or temporarily store the high-purity oxygen output from the pure oxygen tower 19. The oxygen cylinder bank 2 is composed of multiple oxygen cylinders. The multiple oxygen cylinders are arranged on a metal frame, and the bottom end of the metal frame is fixedly connected to the bottom wall of the equipment bin 1 to fix the multiple oxygen cylinders. In this embodiment, the oxygen cylinders are mainly used for oxygen storage and serve as an emergency backup oxygen source for external use; in this embodiment, the oxygen cylinders use carbon fiber wound composite cylinders with a nominal pressure of 25 MPa and a volume of 50 L, and multiple layers of placement save the space of the vehicle chassis.

[0040] Oxygen filling device: Referring to Figure 4 , the oxygen filling device includes an oil-free oxygen booster 11, a cylinder filling valve 22, a 25 MPa filling valve, a 15 MPa filling valve, and an oxygen supply port filling valve.

[0041] The oil-free oxygen booster 11 selects an oil-free piston compressor with a compression stage of two and a volume flow rate of 10 Nm³ / hr, connects the pure oxygen storage tank 21 and the oxygen cylinder bank 2, extracts the high-purity oxygen stored in the pure oxygen storage tank 21, pressurizes and transports it to the oxygen cylinder bank 2 for long-term storage, so that the oxygen filling vehicle has immediately available oxygen reserves.

[0042] Referring to Figure 3 and Figure 4 , an atmospheric pressure evacuation valve is provided between the oil-free oxygen booster 11 and the pure oxygen storage tank 21. When the compressor extracts oxygen, the atmospheric pressure evacuation valve is opened to exclude the air or the high-purity oxygen left over from the previous time in the pipeline between the oil-free oxygen booster 11 and the pure oxygen storage tank 21 to ensure the oxygen storage quality. Moreover, a valve for exhausting old gas is also provided in the pipeline between the oil-free oxygen booster 11 and the oxygen cylinder bank 2. The pipeline between the oil-free oxygen booster 11 and the oxygen cylinder bank 2 is a high-pressure pipeline, and a circulating evacuation valve is selected. To control the opening and closing states of the multiple oxygen cylinders in the oxygen cylinder bank 2, a cylinder filling valve 22 is provided at the air inlet of the multiple oxygen cylinders to control the opening and closing of the pipeline between the oil-free oxygen booster 11 and the cylinder filling valve 22.

[0043] Referring to Figure 4, a pipe tee is arranged at the front end of the cylinder filling valve 22 in the air conveying direction. One end of the tee interface is connected to the oil-free oxygen booster 11, one end is connected to the above-mentioned oxygen cylinder group 2, and the other end is connected to the external filling interface and the oxygen inhalation terminal for oxygen filling and oxygen supply, serving as an oxygen filling pipeline. A filter is arranged at one end of the tee interface connected to the external filling interface to prevent external impurities from flowing into the oxygen cylinder group 2 during oxygen filling.

[0044] Refer to Figure 4 , in this embodiment, the oxygen filling pipeline is divided into three groups, namely the high-pressure oxygen filling pipeline, the low-pressure oxygen filling pipeline, and the normal-pressure oxygen filling pipeline. The high-pressure oxygen filling pipeline is the above-mentioned 25 MPa filling valve, the low-pressure oxygen filling pipeline is the above-mentioned 15 MPa filling valve 24, and the normal-pressure oxygen filling pipeline is the above-mentioned oxygen supply filling valve 25. The pure oxygen flow is powered by the oil-free oxygen booster 11, and the oxygen pressure is reduced to 25 MPa through the 25 MPa filling valve 23, which is applied to high-pressure oxygen storage occasions similar to positive pressure air respirators; the oxygen pressure is reduced to 15 MPa through the 15 MPa filling valve 24, which is applied to low-pressure and slightly high-pressure application occasions similar to hyperbaric oxygen therapy and some special industrial uses, generally for on-site treatment; the oxygen in the pure oxygen storage tank 21 is reduced to normal pressure through the normal-pressure filling valve and directly transported to the oxygen inhalation terminal for the user to directly inhale oxygen; if the user directly inhales oxygen, an oxygen humidifier is also required.

[0045] It should be noted that for occasions with a demand for low-pressure oxygen, the air pressure of 15 MPa is still relatively high. Therefore, a pressure reducer with a range of 0 - 15 MPa needs to be set to reduce the oxygen after the 15 MPa filling valve to low-pressure oxygen storage for output and use.

[0046] The implementation principle of an in-vehicle oxygen generation, storage, and filling integrated device according to an embodiment of the present application is as follows: During oxygen generation, the compressed air produced by the air compressor 16 passes through the filter group 17 and the adsorption dryer 171 for filtration and then enters the air buffer tank as the raw material gas for pressure and flow stabilization. Then it flows into the general oxygen tower 18 and alternately enters the two general oxygen towers 18 through the switching of the pneumatic valve, continuously producing high-oxygen gas with a purity of about 93% - 95%, and entering the general oxygen buffer tank 13 for pressure and flow stabilization. It alternately enters the two pure oxygen towers 19 through the stop valve and the pneumatic valve. Argon and a part of oxygen are adsorbed by the argon removal adsorbent, and the other part of oxygen and argon are absorbed into the general oxygen tower 18 for regeneration of the oxygen generation bed layer and then recycled and reused; the oxygen in the pure oxygen tower 19 is pumped out by the circulating vacuum pump and boosted to 0.5 MPa, and then enters the pure oxygen storage tank 21 for pressure and flow stabilization. In this way, oxygen with a purity of 99.5% can be continuously obtained.

[0047] An oil-free oxygen booster 11 is adopted to compress and boost pure oxygen, and the on-vehicle oxygen cylinder is filled through the cylinder filling valve 22 (Function 1), or external oxygen supply is provided through the 25 MPa filling valve 23 via the inflation hose (Function 2), or high-pressure gas is decompressed through the 15 MPa external filling valve and pressure reducer and then external oxygen supply is provided via the inflation hose (Function 3). It can also directly use the oxygen cylinder through the cylinder filling valve 22, or the pure oxygen storage tank 21 to supply oxygen externally or to the oxygen inhalation terminal in the vehicle. The oxygen inhalation terminal can be connected to a humidifier and an oxygen inhalation mask or nasal cannula to supply oxygen to the patient (Function 4).

[0048] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A vehicle-mounted integrated oxygen production, storage and oxygenation device, comprising an equipment bin (1), wherein the equipment bin (1) is movably arranged, wherein an air compressor (16) is arranged in the equipment bin (1) to compress air and output the compressed air, characterized in that: Also includes: A filter assembly connected to the air compressor (16) for filtering solid particles, oil and water contained in the air; An oxygen tower (18) contains a molecular sieve inside, is connected to the filter assembly, receives the output gas of the filter assembly, adsorbs nitrogen molecules in the gas in the tower, and outputs a high oxygen content gas; A pure oxygen tower (19) contains an argon adsorbent, is connected to the general oxygen tower (18), receives the high oxygen content gas output by the general oxygen tower (18), absorbs argon in the high oxygen content gas, and outputs it; A circulating compressor (15) is connected to the pure oxygen tower (19) to extract the output gas of the pure oxygen tower (19) and increase the pressure; The pure oxygen storage tank (21) is connected to the circulation compressor (15) and stores the high-pressure gas output by the circulation compressor (15).

2. The vehicle-mounted integrated oxygen production, storage and oxygenation device according to claim 1, characterized in that: The filter assembly comprises a filter group (17) and an adsorption dryer (171) connected in sequence, and the filter group (17) is composed of a plurality of filters connected in parallel.

3. The vehicle-mounted integrated oxygen production, storage and oxygenation device according to claim 1 is characterized in that: Two of the general oxygen tower (18) and the pure oxygen tower (19) are arranged in parallel; The two oxygen supply towers (18) are connected to the filter assembly, and the pipeline between the two oxygen supply towers (18) and the filter assembly is provided with a stop valve and a pneumatic valve; The two pure oxygen towers (19) are connected to the two general oxygen towers (18), and the pipelines between the two general oxygen towers (18) and the two pure oxygen towers (19) are provided with the stop valve and the pneumatic valve.

4. A vehicle-mounted integrated oxygen production, storage and oxygenation device according to claim 3, characterized in that: Also includes: An air buffer tank is arranged between the oxygen supply tower (18) and the filter assembly; The general oxygen buffer tank (13) is arranged between the pure oxygen tower (19) and the general oxygen tower (18).

5. The vehicle-mounted integrated oxygen production, storage and oxygenation device according to claim 1, characterized in that: Also includes: The regeneration tank (14) is arranged between the pure oxygen tower (19), the general oxygen tower (18), and the pure oxygen storage tank (21).

6. The vehicle-mounted integrated oxygen production, storage and oxygenation device according to claim 1, characterized in that: Also includes: An oxygen cylinder group (2) is composed of a plurality of oxygen cylinders, the oxygen cylinder group (2) is connected to the pure oxygen storage tank (21), and a cylinder filling valve (22) is provided between the oxygen cylinder group (2) and the pure oxygen storage tank (21); A completely oil-free oxygen booster (11) is arranged between the pure oxygen storage tank (21) and the gas cylinder filling valve (22); The circulating emptying valve is arranged between the oil-free oxygen booster (11) and the gas cylinder filling valve (22) and is connected to the atmosphere.

7. The vehicle-mounted integrated oxygen production, storage and oxygenation device according to claim 6, characterized in that: Also includes: A 25MPa filling valve (23) connected to the oil-free oxygen booster (11) and having an external filling interface on one side; A 15MPa filling valve (24) is connected in parallel to the 25MPa filling valve (23) and is connected to the oil-free oxygen booster (11). One side of the 15MPa filling valve (24) is connected to an external filling interface. A pressure reducer is arranged between the 15MPa filling valve (24) and the external filling interface.

8. The vehicle-mounted integrated oxygen production, storage and oxygenation device according to claim 7, characterized in that: Also includes: The oxygen supply filling valve (25) is connected in parallel to the 15MPa filling valve (24) and the 25MPa filling valve (23) and is connected to the pure oxygen storage tank (21), and an oxygen inhalation terminal and an oxygen humidifier are arranged on one side; a pressure reducer is arranged between the oxygen supply filling valve (25) and the oxygen inhalation terminal.

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