Energy-saving variable volume flow automatic regulating oxygen generator

Abstract

The utility model relates to oxygen -making machine technical field, concretely is a kind of energy -conserving type variable volume flow automatic regulation oxygen -making machine, including controller and the oil -free air compressor, air cooler, compressed air storage tank, oxygen -making device and oxygen storage tank connected in proper order by pipeline, oxygen -making device includes the adsorption tower one and adsorption tower two of parallelly arranged, setting pressure regulating valve, pressure sensor, electric regulating valve, mass flowmeter, solenoid valve one, solenoid valve two and flowmeter are electrically connected with controller, and the gas inlet and gas outlet of adsorption tower one and adsorption tower two are respectively provided with solenoid valve one and solenoid valve two, make adsorption tower one and adsorption tower two can one of them work alone, also can work simultaneously, to adjust the volume of oxygen -making device in working condition, to change the volume of oxygen -making device in working condition according to the demand amount of oxygen and carry out accurate regulation to the oxygen flow of preparation, make oxygen production stable, and save electric energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generator technology, specifically an energy-saving variable volumetric flow rate automatic adjustment oxygen generator. Background Technology

[0002] Existing oxygen generators using pressure swing adsorption (PSA) technology operate on the principle of utilizing the differences in the equilibrium adsorption capacity and diffusion rate of different components in a mixed gas on the adsorbent, as well as the characteristic that the adsorption capacity increases with increasing pressure and decreases with decreasing pressure. Under pressurized conditions, the adsorbed gas components are desorbed, and the adsorbent is regenerated, thereby achieving the separation of the components in the mixed gas and the recycling of the adsorbent. However, the oxygen production is unstable and the energy consumption is high. Utility Model Content

[0003] The purpose of this invention is to provide an energy-saving variable volumetric flow rate automatic oxygen generator with stable oxygen production, in order to overcome the problems existing in existing oxygen generating equipment.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an energy-saving variable volumetric flow rate automatic regulating oxygen generator, comprising a controller and an oil-free air compressor, an air cooler, a compressed air storage tank, an oxygen generating device, and an oxygen storage tank connected in sequence via pipelines. The oxygen generating device includes an adsorption tower one and an adsorption tower two arranged in parallel. A solenoid valve one is installed at the air inlet of adsorption tower one and adsorption tower two, and a solenoid valve two is installed at the air outlet of adsorption tower one and adsorption tower two. The compressed air storage tank is connected to the solenoid valve one at the air inlet of adsorption tower one and adsorption tower two via an air inlet pipe. A pressure regulating valve, a pressure sensor, an electric regulating valve, and a mass flow meter are sequentially arranged on the air inlet pipe. A flow meter is installed at the air outlet of the oxygen storage tank. The pressure regulating valve, pressure sensor, electric regulating valve, mass flow meter, solenoid valve one, solenoid valve two, and flow meter are electrically connected to the controller.

[0005] Based on the above technical solution, the present invention can be further improved as follows: As a further improvement to the above technical solution, the solenoid valve 2 at the outlet of adsorption tower 1 and adsorption tower 2 is connected to the oxygen storage tank through the outlet pipe. Oxygen-generating molecular sieves are installed in adsorption tower 1 and adsorption tower 2. The oxygen-generating molecular sieves are large-particle lithium molecular sieves or zeolite molecular sieves. The adsorption pressure of adsorption tower 1 and adsorption tower 2 is 0.5MPa.

[0006] As a further improvement to the above technical solution, the electric regulating valve is installed between the pressure sensor and the mass flow meter, and the mass flow meter and the controller are electrically connected by a transmitter via wires.

[0007] As a further improvement to the above technical solution, the outlet of the oxygen storage tank is connected to an oxygen output pipe, and an oxygen pressure reducing filter is installed on the oxygen output pipe to reduce and filter the output oxygen.

[0008] As a further improvement to the above technical solution, an adsorption dryer is connected between the air cooler and the compressed air storage tank via a pipeline. The adsorption dryer uses two drying cylinders connected in parallel, and a reversing valve is installed at both the air inlet and outlet of the adsorption dryer.

[0009] As a further improvement to the above technical solution, a closed pipeline connecting the outlets of adsorption tower one and adsorption tower two is provided at the outlets of the two adsorption towers. A needle valve is provided on the closed pipeline to realize the backflushing regeneration function.

[0010] As a further improvement to the above technical solution, the controller may be a PLC controller, and the flow meter may be a digital flow meter.

[0011] The beneficial effects of this utility model are as follows: The energy-saving variable volumetric flow rate automatic regulating oxygen generator of this utility model is equipped with a pressure regulating valve, a pressure sensor, an electric regulating valve, a mass flow meter, a solenoid valve one, a solenoid valve two, and the flow meter is electrically connected to the controller. Furthermore, the inlet and outlet of adsorption tower one and adsorption tower two are respectively equipped with solenoid valve one and solenoid valve two, allowing adsorption tower one and adsorption tower two to operate independently or simultaneously. This changes the volume of the oxygen generator in operation, thereby precisely adjusting the volume of the oxygen generator and the oxygen flow rate according to the oxygen demand, ensuring stable oxygen production and saving energy consumption. Therefore, the above-mentioned oxygen generator has the advantages of energy saving, convenient adjustment, and high degree of automation. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of the energy-saving variable volume flow rate automatic regulating oxygen generator provided in a preferred embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the further improved structure of the oxygen concentrator in the diagram; In the diagram: 1. Oil-free air compressor; 2. Air cooler; 3. Compressed air storage tank; 31. Pressure regulating valve; 32. Pressure sensor; 33. Electric regulating valve; 34. Mass flow meter; 35. Transmitter; 4. Adsorption tower one; 5. Adsorption tower two; 6. Oxygen storage tank; 61. Flow meter; 62. Oxygen pressure reducing filter; 7. Controller; 81. Solenoid valve one; 82. Solenoid valve two; 83. Needle valve; 91. Inlet pipe; 92. Outlet pipe; 93. Oxygen output pipe; 10. Adsorption dryer. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1 , Figure 2As shown, a preferred embodiment of this utility model provides an energy-saving variable volumetric flow rate automatic regulating oxygen generator, including a controller 7 and an oil-free air compressor 1, an air cooler 2, a compressed air storage tank 3, an oxygen generating device, and an oxygen storage tank 6 connected in sequence via pipelines. The oxygen generating device includes an adsorption tower 4 and an adsorption tower 5 arranged in parallel. The inlet of the adsorption tower 4 and the adsorption tower 5 is equipped with a solenoid valve 81, and the outlet of the adsorption tower 4 and the adsorption tower 5 is equipped with a solenoid valve 82. The compressed air storage tank 3 is connected to the solenoid valve 81 at the inlet of the adsorption tower 4 and the adsorption tower 5 via an inlet pipe 91. A pressure regulating valve 31, a pressure sensor 32, an electric regulating valve 33, and a mass flow meter 34 are sequentially arranged on the inlet pipe 91. The outlet of the oxygen storage tank 6 is equipped with a flow meter 61. The pressure regulating valve 31, the pressure sensor 32, the electric regulating valve 33, the mass flow meter 34, the solenoid valve 81, the solenoid valve 82, and the flow meter 61 are electrically connected to the controller 7.

[0018] Oil-free air compressor 1 is used to compress air, and air cooler 2 is used to cool the air. Solenoid valve 82 at the outlet of adsorption tower 4 and adsorption tower 5 is connected to oxygen storage tank 6 via outlet pipe 92. Oxygen-producing molecular sieves are installed inside adsorption tower 4 and adsorption tower 5. These molecular sieves can be large-particle lithium molecular sieves or zeolite molecular sieves. The adsorption pressure of adsorption tower 4 and adsorption tower 5 is 0.5 MPa. Solenoid valves 81 and 82 are respectively installed at the inlet and outlet of adsorption tower 4 and adsorption tower 5. The controller 7 controls the opening and closing of solenoid valves 81 and 82, allowing adsorption tower 4 and adsorption tower 5 to operate independently or simultaneously. This adjusts the volume of the oxygen-producing device during operation, ensuring that the device produces an appropriate amount of oxygen without waste.

[0019] Compressed air storage tank 3 stores compressed air. Pressure regulating valve 31 regulates the pressure of the compressed air entering adsorption tower 4 and / or adsorption tower 5 via inlet pipe 91. Pressure sensor 32 detects the pressure of the compressed air flowing through inlet pipe 91 in real time. Mass flow meter 34 measures the mass flow rate of the compressed air flowing through inlet pipe 91 in real time. The oxygen flow rate data detected by flow meter 61, the pressure data detected by pressure sensor 32, and the mass flow rate data measured by mass flow meter 34 are transmitted to controller 7. Controller 7 controls pressure regulating valve 31 and electric regulating valve 33 accordingly to regulate the compressed air flow rate output from compressed air storage tank 3 to the oxygen generator. Flow meter 61, located at the outlet of oxygen storage tank 6, detects the produced oxygen flow rate in real time. Flow meter 61 is a digital flow meter with signal output. The oxygen flow rate data detected by flow meter 61, the pressure data detected by pressure sensor 32, and the mass flow rate data measured by mass flow meter 34 are transmitted to controller 7. Controller 7 then controls pressure regulating valve 31, electric regulating valve 33, solenoid valve 81, and solenoid valve 82 to precisely regulate the oxygen flow rate produced by oxygen storage tank 6.

[0020] Specifically, the electric regulating valve 33 is located between the pressure sensor 32 and the mass flow meter 34. The controller 7 can be a PLC controller. The mass flow meter 34 and the controller 7 are electrically connected by a transmitter 35 through a wire.

[0021] Preferably, the outlet of the oxygen storage tank 6 is connected to an oxygen output pipe 93, and an oxygen pressure reducing filter 62 is provided on the oxygen output pipe 93 to reduce the pressure and filter the output oxygen. Preferably, an adsorption dryer 10 is connected between the air cooler 2 and the compressed air storage tank 3 via a pipeline. The adsorption dryer 10 uses two drying cylinders connected in parallel. A reversing valve is provided at both the air inlet and the air outlet of the adsorption dryer 10. After the compressed air output by the oil-free compressor 1 enters the adsorption dryer 10, the moisture is removed and the air is discharged through the air outlet of the adsorption dryer 10.

[0022] Preferably, a closed pipeline connecting the outlets of adsorption tower 4 and adsorption tower 5 is provided at the outlets of adsorption tower 4 and adsorption tower 5. A needle valve 83 is provided on the closed pipeline to realize the backflushing regeneration function. That is, a part of the oxygen generated by adsorption tower 4 can enter adsorption tower 5 in reverse through needle valve 83 to clean the oxygen-generating molecular sieve bed in the desorption state, thereby significantly improving the regeneration effect of oxygen-generating molecular sieve and achieving the purpose of improving the efficiency of oxygen generator.

[0023] The oxygen production process is as follows: After the air is compressed by the oil-free air compressor 1, it enters the air cooler 2 for cooling. The cooled gas enters the compressed air storage tank 3. The controller 7 controls the opening of the pressure regulating valve 31, the electric regulating valve 33, and the solenoid valves 81 and 82 at both ends of the adsorption tower 4 and / or the adsorption tower 5 according to the oxygen demand. The compressed air output from the compressed air storage tank 3 enters the oxygen generating device. The oxygen generating molecular sieve set in the adsorption tower 4 and / or the adsorption tower 5 adsorbs the nitrogen in the compressed air. The oxygen in the compressed air is discharged from the outlet of the adsorption tower 4 and / or the adsorption tower 5 and enters the oxygen storage tank 6.

[0024] This utility model's energy-saving variable volumetric flow rate automatic regulating oxygen generator is electrically connected to a controller 7 via a pressure regulating valve 31, a pressure sensor 32, an electric regulating valve 33, a mass flow meter 34, a solenoid valve 81, a solenoid valve 82, and a flow meter 61. Furthermore, solenoid valves 81 and 82 are respectively installed at the inlet and outlet of adsorption towers 4 and 5, allowing adsorption towers 4 and 5 to operate independently or simultaneously. This adjusts the volume of the oxygen generator during operation, precisely regulating the volume and flow rate of the oxygen generator according to oxygen demand, resulting in stable oxygen production and energy savings. Therefore, this oxygen generator offers advantages such as energy saving, convenient adjustment, and a high degree of automation.

[0025] Any descriptions not covered in the above specific embodiments of this utility model belong to the well-known technology in the field, and can be implemented by referring to the well-known technology.

[0026] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An energy-saving variable volumetric flow rate automatic regulating oxygen generator, characterized in that: The system includes a controller and, in sequence via pipes, an oil-free air compressor, an air cooler, a compressed air storage tank, an oxygen generator, and an oxygen storage tank. The oxygen generator includes two adsorption towers, one and two, arranged in parallel. Solenoid valve one is installed at the inlet of both adsorption towers, and solenoid valve two is installed at their outlets. The compressed air storage tank is connected to solenoid valve one at the inlet of both adsorption towers via an inlet pipe. A pressure regulating valve, a pressure sensor, an electric regulating valve, and a mass flow meter are sequentially installed on the inlet pipe. A flow meter is installed at the outlet of the oxygen storage tank. The pressure regulating valve, pressure sensor, electric regulating valve, mass flow meter, solenoid valve one, solenoid valve two, and the flow meter are electrically connected to the controller.

2. The energy-saving variable volumetric flow rate automatic regulating oxygen generator according to claim 1, characterized in that: The solenoid valves at the outlets of adsorption tower one and adsorption tower two are connected to the oxygen storage tank through the outlet pipes. Oxygen-generating molecular sieves are installed inside adsorption tower one and adsorption tower two. The oxygen-generating molecular sieves are large-particle lithium molecular sieves or zeolite molecular sieves. The adsorption pressure of adsorption tower one and adsorption tower two is 0.5 MPa.

3. The energy-saving variable volumetric flow rate automatic regulating oxygen generator according to claim 1, characterized in that: The electric regulating valve is located between the pressure sensor and the mass flow meter, and the mass flow meter and the controller are electrically connected by a transmitter via wires.

4. The energy-saving variable volumetric flow rate automatic regulating oxygen generator according to claim 1, characterized in that: The oxygen storage tank is connected to an oxygen output pipe at its outlet, and an oxygen pressure reducing filter is installed on the oxygen output pipe to reduce and filter the output oxygen.

5. The energy-saving variable volumetric flow rate automatic regulating oxygen generator according to claim 4, characterized in that: An adsorption dryer is connected to the air cooler and the compressed air storage tank via a pipeline. The adsorption dryer consists of two drying cylinders connected in parallel, and a reversing valve is installed at both the air inlet and outlet of the adsorption dryer.

6. The energy-saving variable volumetric flow rate automatic regulating oxygen generator according to claim 1, characterized in that: A closed pipeline connecting the outlets of adsorption tower one and adsorption tower two is provided at the outlets of the two adsorption towers. A needle valve is installed on the closed pipeline to realize the backflushing regeneration function.

7. The energy-saving variable volumetric flow rate automatic regulating oxygen generator according to claim 1, characterized in that: The controller may be a PLC controller, and the flow meter may be a digital flow meter.

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