Automatic oxygen production and oxygen adding device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUODIAN NANJING ELECTRIC POWER TEST RES CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-21
Smart Images
Figure CN224524383U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water oxygenation treatment technology, and in particular to an automatic oxygen generation and oxygenation device. Background Technology
[0002] In related technologies, feedwater oxygenation is a common method for addressing corrosion and scaling in the steam-water systems of ultracritical (supercritical) generator units. Using air as the oxygenation medium is the most common approach. However, air contains approximately 78% nitrogen and 0.03% carbon dioxide. On the one hand, nitrogen, being a non-condensable gas, may affect the heat exchange efficiency of the unit's thermal equipment. On the other hand, trace amounts of carbon dioxide entering the steam-water system with the oxygenation medium may lower the feedwater pH, thereby increasing the risk of corrosion and scaling in the thermal equipment and auxiliary pipelines. Therefore, it is necessary to remove nitrogen and carbon dioxide from the air as much as possible. Existing automatic air oxygenation devices do not adequately consider the potential risks of reduced heat exchange efficiency and corrosion / scaling caused by nitrogen and carbon dioxide in the oxygenation medium. Therefore, there is an urgent need for a device that can efficiently remove nitrogen and carbon dioxide from the air before oxygenation, enabling automatic oxygen production and control of the oxygenation process to solve these problems. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an automatic oxygen generation and oxygenation device. This device can obtain high-purity oxygen, using widely available, low-cost, and environmentally friendly raw materials. It avoids the risks of decreased heat exchange efficiency and corrosion / scaling of water-steam systems and thermal equipment caused by nitrogen and carbon dioxide in the oxygenation medium, thereby ensuring the safe and stable operation of the water-steam system.
[0004] An automatic oxygen generator according to an embodiment of the present invention includes: an automatic gas generation system, a purification system, and a gas storage system. The automatic gas generation system supplies air to the purification system, the purification system purifies the air into oxygen, and the gas storage system stores the purified oxygen. The purification system includes: a purifier, a primary purifier, and a secondary purifier. The purifier has a purification chamber, an inlet, and an outlet communicating with the purification chamber. The inlet is connected to the automatic gas generation system, and the outlet is connected to the gas storage system. The primary purifier is located within the purification chamber and is used to remove nitrogen from the air. The secondary purifier is located within the purification chamber and is used to remove moisture and carbon dioxide from the air. Air entering through the inlet passes sequentially through the primary and secondary purifiers and is discharged from the outlet.
[0005] The automatic oxygen generation and oxygenation device according to an embodiment of this utility model, by setting up an automatic gas generation system, a purification system, and a gas storage system, includes a primary purifier and a secondary purifier installed within the purifier. The primary purifier removes nitrogen from the air, and the secondary purifier removes moisture and carbon dioxide from the air. The automatic gas generation system supplies air to the purification system. After passing through the primary and secondary purifiers sequentially, the air is discharged from the outlet into the gas storage system for storage. This method can obtain high-purity oxygen, with widely available raw materials, low cost, and environmentally friendly and pollution-free operation. It avoids the risks of decreased heat exchange efficiency and corrosion / scaling of water-vapor systems and thermal equipment caused by nitrogen and carbon dioxide in the oxygenation medium, thereby ensuring the safe and stable operation of the water-vapor system.
[0006] According to some embodiments of the present invention, the purifier is provided with a purifier partition, which divides the purification chamber into a first chamber and a second chamber. The air inlet is connected to the first chamber, and the air outlet is connected to the second chamber. The primary purifier is located in the first chamber, and the secondary purifier is located in the second chamber. The first chamber and the second chamber are connected.
[0007] In some embodiments of this utility model, the secondary purifier has an inlet and an outlet, the inlet being connected to the first chamber via a gas channel, and the outlet being connected to the second chamber.
[0008] According to some embodiments of the present invention, the primary purifier includes a nitrogen adsorption layer, which is filled with molecular sieve material for adsorbing nitrogen in the air.
[0009] In some embodiments of this utility model, the primary purifier further includes a regeneration pipeline, a primary nitrogen vent valve, and a secondary nitrogen vent valve. The regeneration pipeline is disposed on the nitrogen adsorption layer and is used to heat the nitrogen adsorption layer when it is saturated with nitrogen. The primary nitrogen vent valve and the secondary nitrogen vent valve are disposed on the purifier. The primary nitrogen vent valve is disposed on the side of the nitrogen adsorption layer near the air inlet, and the secondary nitrogen vent valve is disposed on the side of the nitrogen adsorption layer near the air outlet. When the nitrogen adsorption layer is saturated with nitrogen, the primary nitrogen vent valve and the secondary nitrogen vent valve are used to discharge the gas in the purification chamber.
[0010] According to some embodiments of the present invention, the secondary purifier includes a moisture filter and a carbon dioxide filter. The moisture filter is used to remove moisture from the air; the carbon dioxide filter is filled with a solid alkaline absorbent to remove carbon dioxide from the air.
[0011] According to some embodiments of the present invention, the automatic gas generation system includes an air compressor, the exhaust port of which is connected to the air inlet, and the air compressor is used to draw air from the external environment and compress it.
[0012] In some embodiments of this utility model, the automatic gas generation system further includes a primary filter and a drain solenoid valve. The primary filter is located between the air compressor and the purifier and is used to remove impurities and particulate matter from the compressed air. Along the airflow direction, the drain solenoid valve is located downstream of the primary filter and is used to discharge deposited impurities and particulate matter.
[0013] In some embodiments of this utility model, the automatic gas generation system further includes an outlet shut-off valve located at the exhaust port for controlling the connection between the exhaust port and the inlet port; and / or, the automatic gas generation system further includes a check valve located between the exhaust port and the inlet port for preventing air backflow; and / or, the automatic gas generation system further includes an electrically operated inlet shut-off valve located between the exhaust port and the inlet port for controlling the flow rate of gas entering the inlet port.
[0014] According to some embodiments of this utility model, the gas storage system includes a gas storage cylinder, a pressure holding valve, a pressure sensor, and a safety valve. The gas storage cylinder is connected to the gas outlet and is used to store oxygen. The pressure holding valve is located between the gas storage cylinder and the gas outlet and is used to control the flow of gas from the gas outlet to the gas storage cylinder, thereby controlling the gas pressure in the gas storage cylinder and maintaining the pressure of the gas storage system within a set range. The pressure sensor is connected to the gas storage cylinder and is used to monitor the pressure inside the gas storage cylinder in real time. The safety valve is located on the gas storage cylinder and is used to automatically release pressure when the pressure inside the gas storage cylinder exceeds a safety threshold.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0017] Figure 1 This is a schematic diagram of the structure of an automatic oxygen generator and oxygenation device according to an embodiment of the present utility model.
[0018] Figure label:
[0019] 100. Automatic oxygen generator and oxygenation device;
[0020] 10. Purification system;
[0021] 1. Air purifier; 11. Purification chamber; 111. First chamber; 112. Second chamber; 12. Air inlet; 13. Air outlet; 14. Gas passage; 15. Air purifier partition; 16. Cylinder; 17. Air purifier top cover; 18. Air purifier bottom cover;
[0022] 2. Primary air purifier; 21. Nitrogen adsorption layer; 22. Regeneration pipeline; 23. Primary nitrogen vent valve; 24. Secondary nitrogen vent valve; 25. Nitrogen sensor;
[0023] 3. Secondary purifier; 31. Inlet; 32. Outlet; 33. Moisture filter; 34. Carbon dioxide filter;
[0024] 20. Automatic gas generation system;
[0025] 41. Air compressor; 42. Primary filter; 43. Drain solenoid valve; 44. Outlet shut-off valve; 45. Check valve; 46. Electric intake shut-off valve;
[0026] 30. Gas storage system;
[0027] 51. Gas cylinder; 52. Pressure holding valve; 53. Pressure sensor; 54. Safety valve; 55. Electric regulating valve. Detailed Implementation
[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship 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, features defined with "first" or "second" 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.
[0030] 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.
[0031] The following is for reference. Figure 1 This invention describes an automatic oxygen generator and oxygenation device 100 according to an embodiment of the present invention.
[0032] like Figure 1 As shown, the automatic oxygen generating and oxygenation device 100 according to an embodiment of the present utility model includes an automatic gas generating system 20, a purification system 10, and a gas storage system 30.
[0033] Specifically, the automatic gas generation system 20 supplies air to the purification system 10, which purifies the air into oxygen. The gas storage system 30 stores the purified oxygen from the purification system 10. The purification system 10 includes a purifier 1, a primary purifier 2, and a secondary purifier 3. The purifier 1 has a purification chamber 11 and an air inlet 12 and an air outlet 13 connected to the purification chamber 11. The air inlet 12 is connected to the automatic gas generation system 20, and the air outlet 13 is connected to the gas storage system 30. The primary purifier 2 is located in the purification chamber 11 and is used to remove nitrogen from the air. The secondary purifier 3 is located in the purification chamber 11 and is used to remove moisture and carbon dioxide from the air. Air entering through the air inlet 12 passes through the primary purifier 2 and the secondary purifier 3 sequentially before being discharged through the air outlet 13.
[0034] Among them, the automatic oxygen generation and oxygenation device 100 is suitable for oxygenation treatment of the water-steam system of ultra-supercritical units.
[0035] The automatic gas generation system 20 supplies ambient air to the purification system 10 through the air inlet 12. The air passes through the primary purifier 2 to remove nitrogen and the secondary purifier 3 to remove moisture and carbon dioxide, thereby obtaining high-purity oxygen with a purity of over 99%. The oxygen then enters the gas storage system 30 through the air outlet 13 for storage and future use.
[0036] The automatic oxygen generator 100 of this application utilizes ambient air to produce oxygen. The raw materials are widely available and free, unlike chemical oxygen production methods (such as water electrolysis and potassium chlorate decomposition), which rely on specific raw materials, thus reducing raw material costs. Compared to existing technologies such as water electrolysis or low-temperature distillation, the automatic oxygen generator 100 uses a primary purifier 2 and a secondary purifier 3 for air separation and oxygen production, resulting in lower energy consumption and higher energy efficiency, making it suitable for continuous oxygen supply. Furthermore, the automatic oxygen generator 100 does not produce harmful byproducts, only emitting nitrogen, which can be recycled or directly released into the atmosphere, making it environmentally friendly and pollution-free.
[0037] This utility model provides an automatic oxygen generation and oxygenation device 100 to solve the problem that existing oxygenation devices fail to fully consider the risks of reduced heat exchange efficiency and corrosion and scaling of water-steam systems and thermal equipment caused by nitrogen and carbon dioxide in the oxygenation medium. By integrating air, multi-stage purification, gas storage and regulation, it achieves efficient removal of nitrogen and carbon dioxide, improved oxygen purity and precise adjustment of oxygenation, thereby ensuring the safe and stable operation of the water-steam system.
[0038] The automatic oxygen generator 100 according to an embodiment of this utility model comprises an automatic gas generation system 20, a purification system 10, and a gas storage system 30. The purification system 10 includes a primary purifier 2 and a secondary purifier 3 located within the purifier 1. The primary purifier 2 removes nitrogen from the air, and the secondary purifier 3 removes moisture and carbon dioxide from the air. The automatic gas generation system 20 supplies air to the purification system 10. After passing through the primary purifier 2 and the secondary purifier 3, the air is discharged from the outlet 13 into the gas storage system 30 for storage. This method can obtain high-purity oxygen, with widely available raw materials, low cost, and environmentally friendly and pollution-free operation. It avoids the risks of reduced heat exchange efficiency and corrosion / scaling of water-steam systems and thermal equipment caused by nitrogen and carbon dioxide in the oxygenation medium, thereby ensuring the safe and stable operation of the water-steam system.
[0039] In some embodiments of this utility model, such as Figure 1 As shown, the purifier 1 is equipped with a purifier partition 15, which divides the purification chamber 11 into a first chamber 111 and a second chamber 112. The air inlet 12 is connected to the first chamber 111, and the air outlet 13 is connected to the second chamber 112. The first-stage purifier 2 is located in the first chamber 111, and the second-stage purifier 3 is located in the second chamber 112. The first chamber 111 and the second chamber 112 are connected.
[0040] The automatic gas generation system 20 supplies air from the outside environment to the purification system 10 through the air inlet 12. The air first enters the first chamber 111, where nitrogen is removed by the first-stage purifier 2, and then enters the second chamber 112 where moisture and carbon dioxide are removed by the second-stage purifier 3, thereby obtaining high-purity oxygen.
[0041] For example, the purifier 1 includes a cylindrical body 16, an upper cover 17 and a lower cover 18. The upper cover 17 and the lower cover 18 are threadedly connected to the body 16. The purifier partition 15 is disposed inside the body 16 and fixedly connected to the body 16. The primary purifier 2 is located between the upper cover 17 and the partition 15, and the secondary purifier 3 is located between the lower cover 18 and the partition 15.
[0042] In some embodiments of this utility model, such as Figure 1 As shown, the secondary purifier 3 has an inlet 31 and an outlet 32. The inlet 31 is connected to the first chamber 111 through a gas channel 14, and the outlet 32 is connected to the second chamber 112. This ensures that the air coming out of the first chamber 111 enters the secondary purifier 3 through the gas channel 14 to remove moisture and carbon dioxide from the gas, thus ensuring the effectiveness of moisture and carbon dioxide removal and guaranteeing the purity of the obtained oxygen.
[0043] For example, the purifier 1 includes a cylindrical body 16, a purifier upper cover 17 and a purifier lower cover 18, and a gas passage 14 is disposed on the cylindrical body 16 and communicates with the purifier partition 15 and the purifier lower cover 18.
[0044] In some embodiments of this utility model, such as Figure 1 As shown, the primary purifier 2 includes a nitrogen adsorption layer 21, which is filled with molecular sieve material to adsorb nitrogen in the air. This allows for the removal of nitrogen from the air, and the structure is simple and low in cost.
[0045] In some embodiments of this utility model, such as Figure 1 As shown, the primary purifier 2 also includes a regeneration pipeline 22, a primary nitrogen vent valve 23, and a secondary nitrogen vent valve 24. The regeneration pipeline 22 is located on the nitrogen adsorption layer 21 and is used to heat the nitrogen adsorption layer 21 when it is saturated with nitrogen. The primary nitrogen vent valve 23 and the secondary nitrogen vent valve 24 are located on the purifier 1. The primary nitrogen vent valve 23 is located on the side of the nitrogen adsorption layer 21 near the air inlet 12, and the secondary nitrogen vent valve 24 is located on the side of the nitrogen adsorption layer 21 near the air outlet 13. When the nitrogen adsorption layer 21 is saturated with nitrogen, the primary nitrogen vent valve 23 and the secondary nitrogen vent valve 24 are used to discharge the gas in the purification chamber 11.
[0046] When the nitrogen adsorption layer 21 is saturated with nitrogen, the regeneration pipeline 22 heats the nitrogen adsorption layer 21 to achieve desorption and regeneration of the molecular sieve material through heating.
[0047] In some embodiments, the automatic oxygen generator 100 further includes a control system, which includes a PLC controller and a nitrogen sensor 25. The nitrogen sensor 25 is located at the outlet of the primary purifier 2 and is used to detect the nitrogen concentration at the outlet of the primary purifier 2. When the nitrogen concentration detected by the nitrogen sensor 25 is higher than a set threshold, the PLC controller controls the secondary nitrogen vent valve 24 to open for venting, thereby discharging the gas that does not meet the oxygen purity requirements. At the same time, the PLC controller controls the regeneration circuit to heat the nitrogen adsorption layer 21 for desorption and regeneration. Simultaneously, the PLC controller controls the primary nitrogen vent valve 23 to open for venting. The desorbed nitrogen is discharged from the purifier 1 through the open primary nitrogen vent valve 23 and secondary nitrogen vent valve 24. After the regeneration of the nitrogen adsorption layer 21 is completed, the primary nitrogen vent valve 23 and secondary nitrogen vent valve 24 are closed.
[0048] In some embodiments of this utility model, such as Figure 1 As shown, the secondary purifier 3 includes a moisture filter 33 and a carbon dioxide filter 34. The moisture filter 33 is used to remove moisture from the air, and the carbon dioxide filter 34 is filled with a solid alkaline absorbent to remove carbon dioxide from the air. In this way, the removal of moisture and carbon dioxide from the air can be achieved. The structure is simple and the cost is low.
[0049] In some embodiments of this utility model, such as Figure 1 As shown, the automatic gas generation system 20 includes an air compressor 41. The exhaust port of the air compressor 41 is connected to the air inlet 12. The air compressor 41 is used to draw air from the external environment and compress it. Specifically, the air compressor 41 draws air from the ambient air as a gas source and compresses it to 15MPa, which can provide power for the air flow in the automatic gas generation system 20 and continuously provide air raw materials for the purification system 10.
[0050] In some embodiments of this utility model, such as Figure 1As shown, the automatic air generation system 20 also includes a primary filter 42 and a drain solenoid valve 43. The primary filter 42 is located between the air compressor 41 and the purifier 1, and is used to remove impurities and particulate matter from the compressed air. Along the airflow direction, the drain solenoid valve 43 is located downstream of the primary filter 42, and is used to discharge deposited impurities and particulate matter. The primary filter 42 is connected to the outlet of the air compressor 41, and can remove particulate impurities from the compressed air, preventing particulate impurities from entering the purifier 1 and damaging the primary purifier 2 and the secondary purifier 3. This helps extend the service life of the purification system 10 and improves operational stability. The drain solenoid valve 43 is located downstream of the primary filter 42, and can discharge deposited impurities and particulate matter in the air pipeline when the air compressor 41 starts and stops, preventing the accumulation of filtered impurities and particulate matter from causing poor air delivery in the automatic air generation system 20. The drain design of the drain solenoid valve 43 can significantly reduce maintenance frequency and improve system reliability.
[0051] In some embodiments of this utility model, such as Figure 1 As shown, the automatic gas generation system 20 also includes an outlet shut-off valve 44, which is located at the exhaust port and is used to control the connection and disconnection between the exhaust port and the air inlet 12, thereby facilitating the control of the connection and disconnection between the automatic gas generation system 20 and the purification system 10 according to the oxygen production demand.
[0052] For example, when the nitrogen adsorption layer 21 is saturated with nitrogen, the regeneration pipeline 22 heats the nitrogen adsorption layer 21 to achieve desorption and regeneration of the molecular sieve material. The desorbed nitrogen is discharged from the purifier 1 through the open primary nitrogen vent valve 23 and secondary nitrogen vent valve 24. At this time, the outlet shut-off valve 44 can be closed and opened again after the nitrogen adsorption layer 21 has completed regeneration.
[0053] In some embodiments of this utility model, such as Figure 1 As shown, the automatic gas generation system 20 also includes a check valve 45, which is located between the exhaust port and the air inlet 12 to prevent air backflow, thereby improving the stability of the air supplied by the automatic gas generation system 20 to the purification system 10.
[0054] In some embodiments of this utility model, such as Figure 1 As shown, the automatic gas generation system 20 also includes an electrically operated intake shut-off valve 46, which is located between the exhaust port and the intake port 12 and is used to control the flow rate of gas entering the intake port 12. Specifically, the electrically operated intake shut-off valve 46 is located downstream of the primary filter 42 and can control the flow rate of compressed air entering the purification system 10 in real time according to the oxygen generation rate and oxygen demand.
[0055] In some embodiments, the automatic oxygen generator 100 further includes a control system, which includes a PLC controller. The PLC controller can also control the start and stop of the air compressor 41, the operation of the outlet shut-off valve 44 and the sewage discharge solenoid valve 43, and the opening degree of the electric air intake shut-off valve 46 based on feedback signals from the nitrogen sensor 25 in the purification system 10 and the pressure sensor 53 in the gas storage system 30. With only compressed air input, the automatic oxygen generator 100 can automatically complete the adsorption, desorption, and separation processes without manual intervention, making it simple to operate and highly automated.
[0056] In some embodiments of this utility model, such as Figure 1 As shown, the gas storage system 30 includes a gas cylinder 51, a pressure-holding valve 52, a pressure sensor 53, and a safety valve 54. The gas cylinder 51 is connected to the gas outlet 13 and is used to store oxygen. The pressure-holding valve 52 is located between the gas cylinder 51 and the gas outlet 13 and is used to control the flow of gas from the gas outlet 13 to the gas cylinder 51, thereby controlling the gas pressure in the gas cylinder 51 and maintaining the pressure of the gas storage system 30 within a set range. The pressure sensor 53 is connected to the gas cylinder 51 and is used to monitor the pressure inside the gas cylinder 51 in real time. The safety valve 54 is located on the gas cylinder 51 and is used to automatically release pressure when the pressure inside the gas cylinder 51 exceeds a safety threshold.
[0057] Gas cylinder 51 is connected to the outlet of purifier 1 via pressure-holding valve 52 to store purified high-purity oxygen. Pressure sensor 53 monitors the gas pressure in cylinder 51 in real time. When the pressure in cylinder 51 exceeds the safety threshold of 15 MPa, safety valve 54 automatically releases pressure to ensure the safety and stability of the gas storage system 30. The gas cylinder 51 is equipped with safety valve 54 and pressure-holding valve 52, combined with the multiple protection mechanisms of pressure sensor 53, to ensure safe operation.
[0058] The pressure-holding valve 52 ensures that the oxygen prepared by the purification system 10 can be injected into the gas storage cylinder 51, and at the same time increases the gas pressure of the gas storage cylinder 51 to a certain range, thereby ensuring that the oxygen supply pressure of the gas storage cylinder 51 is higher than the unit system pressure at the oxygen supply point.
[0059] Furthermore, an electric regulating valve 55 is also installed on the outlet pipe of the gas storage cylinder 51 to adjust the oxygen supply according to the dissolved oxygen demand of the water vapor system.
[0060] In some embodiments, the automatic oxygen generator 100 further includes a control system, which includes a PLC controller that controls the opening of the electric regulating valve 55 through feedback from the nitrogen sensor 25 and the pressure sensor 53, thereby achieving closed-loop control for adjusting the oxygen supply and stabilizing the system pressure.
[0061] The following describes the specific working process of the automatic oxygen generation and oxygenation device 100 of this utility model.
[0062] After being compressed by the air compressor 41, the ambient air passes through the first-stage filter 42 to remove particulate impurities. The impurity particles deposited in the pipeline are discharged by the drain solenoid valve 43 according to the start and stop of the air compressor 41.
[0063] The PLC controller opens the electric intake shut-off valve 46, allowing compressed air to enter the primary purifier 2, where nitrogen adsorption layer 21 adsorbs nitrogen. When the molecular sieve in the primary purifier 2 becomes saturated, it undergoes heating and desorption through the regeneration pipeline 22. The desorbed nitrogen is then exhausted by opening the primary nitrogen vent valve 23. After regeneration is complete, the primary nitrogen vent valve 23 is closed.
[0064] When the nitrogen sensor 25 detects that the nitrogen concentration at the outlet of the primary purifier 2 is lower than the set value, the primary nitrogen vent valve 23 and the secondary nitrogen vent valve 24 are closed, and the gas enters the secondary purifier 3 through the gas channel 14. The gas first passes through the moisture filter 33 to remove water, and then enters the carbon dioxide filter 34 to remove carbon dioxide. The purified high-purity oxygen passes through the outlet 13 of the purifier 1, and is pressurized by the pressure holding valve 52 before being stored in the gas storage cylinder 51.
[0065] Pressure sensor 53 monitors the oxygen pressure in gas cylinder 51 in real time. When the pressure reaches the upper limit of the set pressure value, air compressor 41 stops running; when the pressure drops to the lower limit of the set pressure value, air compressor 41 restarts. Oxygen in gas cylinder 51 is injected into the oxygenation point of the water-vapor system through electric regulating valve 55. PLC controller dynamically adjusts the valve opening according to the dissolved oxygen required by the water-vapor system to ensure that the dissolved oxygen concentration is stable within the control range.
[0066] This utility model provides an automatic oxygen generation and oxygenation device 100 to solve the problem that existing oxygenation devices fail to fully consider the risks of reduced heat exchange efficiency and corrosion and scaling of water-steam systems and thermal equipment caused by nitrogen and carbon dioxide in the oxygenation medium. By integrating air compression, multi-stage purification, gas storage pressure regulation and closed-loop control functions, it achieves efficient removal of nitrogen and carbon dioxide, improved oxygen purity and precise adjustment of oxygenation amount, thereby ensuring the safe and stable operation of the water-steam system.
[0067] The automatic oxygen generator 100 provided by this utility model for oxygenation of the unit's steam-water system removes nitrogen through a primary purifier 2 and removes moisture and carbon dioxide through a secondary purifier 3, achieving an oxygen purity of over 99%. Closed-loop control of the air compressor 41's start / stop, oxygenation adjustment, and system pressure stabilization is achieved through feedback from the nitrogen sensor 25 and pressure sensor 53. The drain solenoid valve 43's drain design significantly reduces maintenance frequency and improves system reliability. The gas storage cylinder 51 is equipped with a safety valve 54 and a pressure-holding valve 52, combined with the multiple protection mechanisms of the pressure sensor 53, ensuring the safe operation of the gas storage system 30.
[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0069] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An automatic oxygen generation and oxygenation device, characterized in that, include: An automatic gas generation system, a purification system, and a gas storage system are provided. The automatic gas generation system supplies air to the purification system, the purification system purifies the air into oxygen, and the gas storage system stores the purified oxygen. The purification system includes: The purifier has a purification chamber inside, and has an air inlet and an air outlet communicating with the purification chamber. The air inlet is connected to the automatic gas generation system, and the air outlet is connected to the gas storage system. A primary air purifier, located inside the purification chamber, is used to remove nitrogen from the air; A secondary air purifier, located within the purification chamber, is used to remove moisture and carbon dioxide from the air. Air entering through the air inlet passes through the primary purifier and the secondary purifier in sequence before being discharged from the air outlet.
2. The automatic oxygen generator and oxygenation device according to claim 1, characterized in that, The purifier is equipped with a purifier partition, which divides the purification chamber into a first chamber and a second chamber. The air inlet is connected to the first chamber, and the air outlet is connected to the second chamber. The first-stage purifier is located in the first chamber, and the second-stage purifier is located in the second chamber. The first chamber and the second chamber are connected.
3. The automatic oxygen generator and oxygenation device according to claim 2, characterized in that, The secondary purifier has an inlet and an outlet. The inlet is connected to the first chamber via a gas channel, and the outlet is connected to the second chamber.
4. The automatic oxygen generator and oxygenation device according to claim 1, characterized in that, The primary air purifier includes: A nitrogen adsorption layer, which is filled with molecular sieve material, is used to adsorb nitrogen from the air.
5. The automatic oxygen generator and oxygenation device according to claim 4, characterized in that, The primary air purifier also includes: A regeneration pipeline is provided on the nitrogen adsorption layer and is used to heat the nitrogen adsorption layer when the nitrogen adsorption layer is saturated with nitrogen. A primary nitrogen vent valve and a secondary nitrogen vent valve are provided on the purifier. The primary nitrogen vent valve is located on the side of the nitrogen adsorption layer near the air inlet, and the secondary nitrogen vent valve is located on the side of the nitrogen adsorption layer near the air outlet. When the nitrogen adsorption layer is saturated with nitrogen, the primary nitrogen vent valve and the secondary nitrogen vent valve are used to discharge the gas in the purification chamber.
6. The automatic oxygen generator and oxygenation device according to claim 1, characterized in that, The secondary air purifier includes: A moisture filter for removing moisture from the air; A carbon dioxide filter, wherein the carbon dioxide filter is filled with a solid alkaline absorbent for removing carbon dioxide from the air.
7. The automatic oxygen generator and oxygenation device according to claim 1, characterized in that, The automatic gas generation system includes: An air compressor, wherein the exhaust port of the air compressor is connected to the air inlet, and the air compressor is used to draw in and compress air from the external environment.
8. The automatic oxygen generator and oxygenation device according to claim 7, characterized in that, The automatic gas generation system also includes: A primary filter is provided between the air compressor and the purifier to remove impurities and particulate matter from the compressed air. A drain solenoid valve is located downstream of the primary filter along the airflow direction and is used to discharge deposited impurities and particles.
9. The automatic oxygen generator and oxygenation device according to claim 7, characterized in that, The automatic gas generation system also includes an outlet shut-off valve, which is located at the exhaust port and is used to control the connection and disconnection between the exhaust port and the inlet port. And / or, the automatic gas generation system further includes a check valve, which is located between the exhaust port and the air inlet to prevent air backflow; And / or, the automatic gas generation system further includes an electrically operated intake shut-off valve, which is located between the exhaust port and the intake port and is used to control the flow rate of gas entering the intake port.
10. The automatic oxygen generator and oxygenation device according to claim 1, characterized in that, The gas storage system includes: A gas storage cylinder, which is connected to the gas outlet, is used to store oxygen; A pressure-holding valve is provided between the gas storage cylinder and the gas outlet to control the flow of gas from the gas outlet to the gas storage cylinder, thereby controlling the gas pressure in the gas storage cylinder and maintaining the pressure of the gas storage system within a set range. A pressure sensor, which is connected to the gas storage cylinder, is used to monitor the pressure inside the gas storage cylinder in real time; A safety valve is provided on the gas storage cylinder and is used to automatically release pressure when the pressure in the gas storage cylinder exceeds a safety threshold.