High-reliability air suspension oxygenation device and operation control method thereof

Abstract

The invention discloses a high-reliability air suspension oxygenation device and an operation control method thereof.The high-reliability air suspension oxygenation device comprises a cabinet, an air supply air inlet and an oxygenation air outlet are formed in the cabinet, and a frequency converter is installed in the cabinet; the aerator is installed in the cabinet and driven by the frequency converter, and an air inlet of the aerator is located in the cabinet; the sensing monitoring assembly is arranged on the cabinet or the aerator and used for detecting the real-time operation state of the aerator; the man-machine interaction terminal is mounted on the cabinet and is used for a user to set a preset instruction; the controller is mounted in the cabinet and is configured to send an automatic frequency control signal to the frequency converter according to a preset instruction and a real-time operation state; the entity speed regulation knob is arranged on the outer surface of the cabinet and is directly and electrically connected with the frequency converter; the device has the advantages that a redundancy control system can be utilized, the problem that regulation and control cannot be achieved due to electronic element failure in a severe environment is solved, and reliable operation of equipment is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oxygenators, in particular to a high-reliability air-suspended oxygenation device and an operation control method thereof. BACKGROUND

[0002] Oxygenators are indispensable core equipment in the modern aquaculture industry. Their main role is to increase the dissolved oxygen content in water, ensuring that fish and shrimp breeding organisms do not die from lack of oxygen, while inhibiting the growth of anaerobic bacteria in water to prevent water quality deterioration. As the aquaculture industry is increasingly developing towards high-density, standardization and intensification, aquaculture operators have higher requirements for the energy efficiency ratio, noise control and environmental performance of oxygenation equipment. In order to solve the problems of high noise and high energy consumption of traditional oxygenation equipment, air-suspended technology, with its characteristics of no friction, high efficiency and low noise, has gradually become the development trend of the new generation of oxygenators and is widely used in high-density aquaculture oxygenation operations.

[0003] In the development history of the prior art, aquaculture has mainly experienced several generations of oxygenation equipment. The early waterwheel-type oxygenator has limited oxygenation effect and cannot meet the needs of high-density breeding. The subsequent popular Roots blower, although simple in structure, has problems of high noise, high power consumption and low efficiency of belt transmission. The centrifugal blower that appeared later uses ball or sliding bearings, which has improved performance, but the contact bearings wear out quickly, have a short service life (usually only 6-24 months), and need to be lubricated with grease, which poses the risk of grease leakage polluting the breeding water.

[0004] However, this air-suspended oxygenator that relies too much on full-electronic control has obvious reliability shortcomings in actual application. The aquaculture environment is usually harsh, and the equipment is often in a high-humidity, high-salinity (such as seawater breeding) or open or semi-open environment containing corrosive components. The precision electronic components in the existing touch screen and PLC circuit are prone to failure or malfunction after being subjected to salt mist corrosion or moisture erosion for a long time. Once the touch screen goes black or the control circuit fails, this single-control-logic oxygenator will completely lose its adjustment ability, and users cannot adjust the operating parameters through the screen or perform normal start-stop operations. The failure of such an electronic system causes the entire machine to malfunction, seriously affecting the user's experience and posing a huge risk of oxygen deprivation for high-density breeding, which cannot meet the production requirements of high reliability. SUMMARY

[0005] The application aims to provide a high-reliability air suspension oxygenation device and an operation control method thereof, which can utilize a redundancy control system to solve the problem of failure to control due to electronic component failure in a harsh environment and ensure reliable operation of the device.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a high-reliability air suspension oxygenation device, comprising: A cabinet, which is provided with a gas inlet and an oxygenation outlet, and is internally provided with a frequency converter; An oxygenation machine, which is installed in the cabinet and is driven by the frequency converter, has an air inlet in the cabinet and is configured to inhale air entering the cabinet through the gas inlet, and has an air outlet connected to the oxygenation outlet; A sensing and monitoring assembly, which is arranged on the cabinet or the oxygenation machine and is used to detect the real-time operation state of the oxygenation machine; A human-computer interaction terminal, which is installed on the cabinet and is used for a user to set a preset instruction; A controller, which is installed in the cabinet and is electrically connected to the human-computer interaction terminal, the sensing and monitoring assembly and the frequency converter, and is configured to send an automatic frequency control signal to the frequency converter according to the preset instruction and the real-time operation state; A physical speed regulation knob, which is arranged on the outer surface of the cabinet and is directly electrically connected to the frequency converter; The frequency converter is configured to drive the oxygenation machine in response to the signal input by the controller, and when the controller fails, the frequency converter adjusts the output frequency in response to the manual adjustment signal input by the physical speed regulation knob.

[0007] Preferably, the oxygenation machine comprises a motor and a gas compressor driven by the motor, the gas outlet of the gas compressor is configured as the air outlet, the air outlet is connected to an air outlet pipeline, the air outlet pipeline is connected to the oxygenation outlet, the motor has an outer casing, the outer casing is internally provided with a cooling gas flow channel, the air outlet of the cooling gas flow channel is connected to the air outlet pipeline, and the cooling gas flow channel is used to collect the gas discharged from the cooling gas flow channel into the air outlet pipeline.

[0008] Preferably, the motor comprises a stator, a rotor, an air bearing and a cooling impeller, the outer casing comprises a main casing and a cooling volute connected to one end of the main casing, the stator is fixedly installed in the main casing, a cooling air inlet hole is formed in the side wall of the main casing and communicates with the cooling gas flow channel, the cooling gas flow channel is formed by the gap between the outer wall of the stator and the inner wall of the main casing, the rotor is arranged in the stator and is supported by the air bearing, the cooling impeller is arranged in the cooling volute and is fixedly connected with the rotor in a coaxial manner, the outlet end of the cooling gas flow channel is formed in the cooling volute and is connected to the exhaust pipe through a connecting pipe, and the cooling impeller is configured to rotate with the rotor and press the gas in the cooling gas flow channel into the exhaust pipe through the outlet end of the cooling gas flow channel and the connecting pipe.

[0009] Preferably, the compressor comprises a main volute and a main centrifugal impeller, the main volute is connected to the end of the main casing away from the cooling volute, and the main centrifugal impeller is fixedly installed at the end of the rotor extending into the main volute.

[0010] Preferably, two air supply inlets are formed in the side wall of the cabinet, and soundproof cotton is installed at each air supply inlet, an air inlet cover is installed on the outer wall of the cabinet at a position corresponding to the air supply inlet, and the air inlet cover is in the form of an open-bottom box structure and is configured to allow external air to enter the air inlet cover through the bottom opening and enter the interior of the cabinet through the air supply inlet and the soundproof cotton.

[0011] Preferably, two sound reduction hole plates are fixedly arranged in the interior of the cabinet, the two sound reduction hole plates are vertically fixed in the cabinet and are vertically distributed and connected to each other, and the two sound reduction hole plates are located between the air supply inlet and the oxygenator and are configured to form a blocking structure for the air entering through the air supply inlet.

[0012] Preferably, the connecting pipe is in the form of a flexible bellows, and a bypass interface is formed in the side wall of the exhaust pipe, one end of the flexible bellows is connected to the outlet end of the cooling volute, and the other end of the flexible bellows is connected to the bypass interface of the exhaust pipe.

[0013] Another object of the present application is to provide an operation control method of the high-reliability air-suspended oxygenation device. S1: the controller acquires the preset instruction set by the human-computer interaction terminal, and synchronously receives the real-time running state fed back by the sensing monitoring component; S2: the controller compares the target value in the preset instruction with the feedback value in the real-time running state, performs operation processing on the deviation of the two by using a preset control algorithm, and generates an automatic frequency control signal and continuously sends it to the frequency converter according to the result of the operation processing, so as to drive the oxygenator to run under the preset working condition; S3: the frequency converter is internally configured with a main frequency instruction source and an auxiliary frequency instruction source, wherein the main frequency instruction source corresponds to receive the automatic frequency control signal from the controller, the auxiliary frequency instruction source corresponds to receive the manual adjustment signal from the physical speed regulating knob, and the frequency converter is set to monitor the communication state of the main frequency instruction source channel in real time and is preset with a communication timeout threshold; S4: during the operation process, when the frequency converter continuously fails to receive the valid automatic frequency control signal within the time exceeding the communication timeout threshold, the frequency converter determines that the controller has a failure fault, at this time, the frequency converter immediately executes a fault response logic, automatically shields the main frequency instruction source, and switches the frequency given channel to the auxiliary frequency instruction source; S5: the user changes the manual adjustment signal input to the frequency converter by rotating the physical speed regulating knob, and the frequency converter responds to the change of the manual adjustment signal and directly adjusts the power frequency output to the oxygenator to maintain the emergency operation of the equipment.

[0014] Preferably, the real-time running state involved in the step S1 comprises: physical running parameters collected by the sensing monitoring component, the physical running parameters at least including exhaust pressure value and motor temperature value of the oxygenator; and electrical running parameters fed back by the frequency converter, the electrical running parameters at least including output current value and DC bus voltage value of the frequency converter.

[0015] Compared with the prior art, the oxygenator is placed in the cabinet, the inner cavity of the cabinet is used as an air inlet buffer space, external air enters the cabinet through the air supply inlet and is sucked into the oxygenator, is compressed and is discharged through the oxygen outlet, this air path layout not only simplifies the internal pipeline structure, but also uses the air inlet airflow to take away the heat inside the cabinet.

[0016] In terms of control logic, the device builds two independent control loops of automatic and manual. Under normal conditions, the system performs automatic closed-loop control, and the controller sends automatic frequency control signals to the frequency converter to realize intelligent operation according to the preset instructions of the human-computer interaction terminal and the real-time state feedback of the sensing monitoring component. The advantage is to overcome the technical pain point of controller paralysis and shutdown in traditional equipment. An emergency control channel of pure hardware is established by setting a physical speed regulating knob which is independent of the controller logic and directly connected to the frequency converter. Once the controller fails, the frequency converter can directly respond to the manual signal of the physical speed regulating knob to adjust the output frequency, ensuring that the user can still take over the device through the physical knob to maintain the uninterrupted operation of the oxygenator in the case of failure of the core control unit, thereby effectively improving the fault tolerance and reliability of the device in complex breeding environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application. Figure 2 It is a front view of the present application. Figure 3 It is a schematic diagram of the internal structure of the cabinet in the present application. Figure 4 It is a schematic diagram of the three-dimensional structure of the air supply inlet in the present application. Figure 5 It is a schematic diagram of the three-dimensional structure of the oxygenator in the present application. Figure 6 It is a sectional view of the oxygenator in the present application. Figure 7 It is a principle block diagram of the present application. In the figure, 1 is a cabinet, 2 is an air supply inlet, 3 is an oxygenation outlet, 4 is a frequency converter, 5 is an oxygenator, 6 is a sensing monitoring component, 7 is a human-computer interaction terminal, 8 is a controller, 9 is a physical speed regulating knob, 10 is a motor, 11 is a compressor, 12 is an exhaust port, 13 is an exhaust duct, 14 is an outer casing, 15 is a cooling gas flow channel, 16 is a stator, 17 is a rotor, 18 is an air bearing, 19 is a cooling impeller, 20 is a main casing, 21 is a cooling volute, 22 is a cooling air inlet, 23 is a connecting pipe, 24 is a main volute, 25 is a main centrifugal impeller, 26 is soundproof cotton, 27 is an air inlet cover, 28 is a lower opening, 29 is a sound hole plate, and 30 is a bypass interface. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0020] Embodiment one: as shown in the figure, a high-reliability air suspension oxygenation device, comprising: Figures 1-7 a cabinet 1, the cabinet 1 is provided with a gas inlet 2 and an oxygenation outlet 3, and a frequency converter 4 is installed inside the cabinet 1; an oxygenation machine 5 installed in the cabinet 1 and driven by the frequency converter 4, the air inlet of the oxygenation machine 5 is located in the cabinet 1, configured to suck in the air entering the cabinet 1 through the gas inlet 2, and the air outlet 12 is connected with the oxygenation outlet 3; a sensing and monitoring component 6 arranged on the cabinet 1 or the oxygenation machine 5, used for detecting the real-time running state of the oxygenation machine 5; a man-machine interaction terminal 7 installed on the cabinet 1, used for setting a preset instruction by a user; a controller 8 installed in the cabinet 1, and electrically connected with the man-machine interaction terminal 7, the sensing and monitoring component 6 and the frequency converter 4, configured to send an automatic frequency control signal to the frequency converter 4 according to the preset instruction and the real-time running state; a physical speed regulation knob 9 arranged on the outer surface of the cabinet 1 and directly electrically connected with the frequency converter 4; wherein, the frequency converter 4 is configured to drive the oxygenation machine 5 in response to the signal input by the controller 8, and when the controller 8 fails, the frequency converter 4 adjusts the output frequency in response to the manual adjustment signal input by the physical speed regulation knob 9. Embodiment two: as shown in the figure, different from embodiment one, the oxygenation machine 5 comprises a motor 10 and a gas compressor 11 driven by the motor 10, the exhaust end of the gas compressor 11 is configured as an air outlet 12, the air outlet 12 is connected with an exhaust pipeline 13, the exhaust pipeline 13 is connected to the oxygenation outlet 3, the motor 10 has an outer casing 14, the outer casing 14 is configured with a cooling gas flow channel 15, the exhaust end of the cooling gas flow channel 15 is communicated with the exhaust pipeline 13, and the cooling gas flow channel 15 is used for collecting the gas discharged from the cooling gas flow channel 15 into the exhaust pipeline 13.

[0021] Figures 1-7

[0022] ​​The aforementioned structure integrates the main air path for oxygenation and the auxiliary air path for heat dissipation of the motor 10, achieving coordinated operation of gas delivery and heat management. The motor 10 drives the compressor 11 to generate high-pressure airflow, which is output through the exhaust pipe 13 as the main source of oxygenation. At the same time, the heat generated inside the motor 10 is carried away by the airflow in the cooling channel inside the outer casing 14. The advantage of this design is that it adopts a waste gas convergence scheme, directly connecting the outlet of the cooling channel to the exhaust pipe 13. This prevents the heat-carrying cooling gas from being discharged into the cabinet 1, but instead merges into the main airflow and is transported to the outside. This design not only effectively reduces the internal temperature of the motor 10, ensuring the service life of the core drive components, but also completely avoids the accumulation of hot waste gas in the cabinet 1, which would cause the ambient temperature to rise. This greatly reduces the heat dissipation pressure on the inverter 4 and controller 8, which are also located in the cabinet 1. At the same time, this shared exhaust pipe 13 structure simplifies the internal piping layout of the entire machine and ensures that all the intake air is ultimately used to supply air to the water body, greatly improving aeration efficiency and ultimately achieving efficient heat removal and full utilization of airflow.

[0023] In this embodiment, the motor 10 includes a stator 16, a rotor 17, an air bearing 18, and a cooling impeller 19. The outer casing 14 includes a main casing 20 and a cooling volute 21 connected to one end of the main casing 20. The stator 16 is fixedly installed inside the main casing 20. A cooling air inlet 22 communicating with the cooling gas flow channel 15 is provided on the side wall of the main casing 20. The cooling gas flow channel 15 is formed by the gap between the outer wall of the stator 16 and the inner wall of the main casing 20. The rotor 17 passes through the inside of the stator 16 and is supported by the air bearing 18. The cooling impeller 19 is housed in the cooling volute 21 and is coaxially fixedly connected to the rotor 17. The outlet end of the cooling gas flow channel 15 is opened on the cooling volute 21 and is connected to the exhaust pipe 13 through the connecting pipe 23. The cooling impeller 19 is configured to rotate with the rotor 17, so that the gas in the cooling gas flow channel 15 is sequentially pressed into the exhaust pipe 13 after passing through the outlet end of the cooling gas flow channel 15 and the connecting pipe 23.

[0024] This mechanism utilizes the high-speed rotation of the rotor 17 on the air bearing 18 to drive the coaxially fixed cooling impeller 19 to operate synchronously. The cooling impeller 19 rotates at high speed in the cooling volute 21 to generate suction, guiding external air to be drawn in through the cooling air inlet 22 on the side wall of the main housing 20, and forcing the airflow to flow at high speed along the annular gap between the outer wall of the stator 16 and the inner wall of the main housing 20, thereby performing direct and efficient flushing heat exchange on the heat-generating core stator 16.

[0025] The advantage of the above design is that it solves the pressure matching problem when the cooling exhaust gas enters the high-pressure main pipeline. Through the centrifugal pressurization effect of the cooling impeller 19, the cooling gas that has absorbed the heat of the stator 16 has a sufficiently high pressure to overcome the back pressure resistance of the oxygenation main airflow in the exhaust pipe 13 and be smoothly discharged into the exhaust pipe 13 through the connecting pipe 23. This design not only realizes the rapid heat dissipation inside the motor 10 and ensures the thermal stability of the stator 16 coil and air bearing 18 under high-speed conditions, but also utilizes the mechanical energy of coaxial drive to achieve an adaptive cooling effect that automatically adjusts the air volume according to the speed without the need for an additional electric fan.

[0026] In this embodiment, the compressor 11 includes a main volute 24 and a main centrifugal impeller 25. The main volute 24 is connected to the end of the main housing 20 away from the cooling volute 21. The main centrifugal impeller 25 is fixedly installed at the end of the rotor 17 that extends into the main volute 24. The main volute 24 is constructed with an axial intake port and a tangential exhaust port 12. The axial intake port constitutes the air inlet of the aerator 5, and the tangential exhaust port 12 constitutes the exhaust port 12 of the aerator 5. The tangential exhaust port 12 is connected to the air inlet flange of the exhaust pipe 13.

[0027] The above structure adopts a compact integrated design in which the rotor 17 of the motor 10 directly drives the centrifugal impeller. The main centrifugal impeller 25 located at one end of the main housing 20 rotates at high speed with the rotor 17. It draws air from the cabinet 1 into the center of the main volute 24 through the axial air intake port. The air is accelerated and compressed by centrifugal force. Then, the high-pressure gas is guided along the flow channel of the main volute 24 and discharged into the exhaust pipe 13 through the tangential exhaust port 12.

[0028] The advantages of this design lie in its efficient fluid dynamics and structural stability. The axial intake combined with tangential exhaust design conforms to aerodynamic principles, minimizing turbulent losses during compression and significantly improving the output pressure and flow rate of the oxygen-enriched gas. Meanwhile, the direct connection between the main volute 24 and the main housing 20 ensures the coaxiality of the entire unit, while the flange connection of the tangential exhaust port 12 effectively ensures the sealing and connection strength of the high-pressure air circuit under high-speed vibration environment, preventing air leakage or pressure loss due to loose interfaces.

[0029] In this embodiment, two air inlets 2 are provided on the side wall of the cabinet 1, and sound insulation cotton 26 is installed at each air inlet 2. An air intake cover 27 is installed on the outer wall of the cabinet 1 at the position corresponding to the air inlet 2. The air intake cover 27 has a box structure with a lower opening 28, which is configured to allow outside air to enter the air intake cover 27 through the lower opening 28, and pass through the sound insulation cotton 26 to enter the interior of the cabinet 1 through the air inlet 2.

[0030] Outside air is drawn in by the negative pressure inside the cabinet 1 and must first flow upwards through the opening at the bottom of the air intake cover 27. After being filtered and buffered by the sound insulation cotton 26, it can then enter the cabinet 1 through the air supply inlet 2. This design utilizes the principle of fluid path deflection and gravity to achieve multiple safety protections. The box structure of the lower opening 28 effectively blocks rainwater, splashing water droplets, and large particles of debris from directly entering the cabinet 1, completely eliminating the risk of electrical short circuits caused by rainwater backflow. At the same time, the air intake cover 27 and the sound insulation cotton 26 work together to form a composite noise reduction channel. While the sound insulation cotton 26 absorbs high-frequency aerodynamic noise, the robust cover shell cuts off the direct propagation path of noise, forcing sound waves to be refracted and attenuated before being discharged downwards. This significantly reduces the noise pollution of the surrounding environment while ensuring unobstructed air intake.

[0031] Example 3: Figures 1-7 As shown, unlike Embodiment 2, two sound-absorbing perforated plates 29 are fixedly installed inside the cabinet 1. The two sound-absorbing perforated plates 29 are vertically fixed inside the cabinet 1, and the two sound-absorbing perforated plates 29 are vertically distributed and connected to each other. The two sound-absorbing perforated plates 29 are located between the air supply inlet 2 and the aerator 5, and are configured to form a blocking structure for the air entering through the air supply inlet 2.

[0032] The above structure further reduces the aerodynamic noise leakage during equipment operation. The two vertical and interconnected sound-absorbing perforated plates 29 located between the air supply inlet 2 and the aerator 5 form a physical blocking area, forcing the airflow entering from the outside to form a turning path in the cabinet 1, while cutting off the path of the high-frequency noise of the aerator 5 directly propagating to the air inlet.

[0033] The advantage of this design is that it significantly improves the overall noise reduction performance of the machine. The vertically connected plate structure not only enhances the stability of the installation, but also utilizes the microporous sound absorption characteristics and physical blocking effect of the perforated plate to scatter and attenuate the airflow noise. This effectively prevents the high-decibel noise generated by the motor 10 and compressor 11 from being directly radiated to the outside through the air inlet. Combined with the external air intake cover 27, it achieves a dual noise reduction effect, greatly improving the sound environment quality around the equipment.

[0034] In this embodiment, the connecting pipe 23 is constructed as a flexible corrugated pipe, and a bypass interface 30 is provided on the side wall of the exhaust pipe 13. One end of the flexible corrugated pipe is connected to the air outlet on the cooling volute 21, and the other end is connected to the bypass interface 30 on the exhaust pipe 13.

[0035] In the above structure, the gas discharged from the cooling volute 21 is compressed and pressurized, and then guided by a flexible bellows to smoothly merge into the main airflow of the exhaust pipe 13 from the bypass interface 30. This not only utilizes the flexible characteristics of the bellows to isolate the rigid impact of the high-frequency vibration of the motor 10 on the main pipe, but also realizes the superposition effect of airflow and the deep utilization of energy.

[0036] Because the cooling airflow has undergone centrifugal work through the coaxial cooling impeller 19, it already possesses high static pressure and flow velocity. By channeling it into the main pipeline instead of directly venting it, it is equivalent to introducing an additional auxiliary air source into the aeration system. This results in the total air volume discharged from the aeration outlet 3 being equal to the sum of the main compressed air volume and the cooling circulation air volume. This design significantly increases the total exhaust flow rate per unit time without increasing additional energy consumption, thereby greatly enhancing the device's aeration and oxygenation capabilities for the water body and achieving ultimate optimization of the overall energy efficiency ratio.

[0037] Example 4: An operation control method based on the high-reliability air suspension oxygenation device in Example 3, comprising the following steps: S1: The controller 8 obtains the preset instructions set by the human-machine interaction terminal 7 and simultaneously receives the real-time operating status feedback from the sensing and monitoring component 6. S2: The controller 8 compares the target value in the preset command with the feedback value in the real-time operating status, and uses the preset control algorithm to calculate the deviation between the two. Based on the result of the calculation, the controller 8 generates an automatic frequency control signal and continuously sends it to the frequency converter 4 to drive the aerator 5 to run under the preset operating conditions. S3: The inverter 4 is equipped with a main frequency command source and an auxiliary frequency command source. The main frequency command source receives the automatic frequency control signal from the controller 8, and the auxiliary frequency command source receives the manual adjustment signal from the physical speed control knob 9. The inverter 4 is set to monitor the communication status of the main frequency command source channel in real time and has a preset communication timeout threshold. S4: During operation, if the inverter 4 fails to receive a valid automatic frequency control signal for a period of time exceeding the communication timeout threshold, the inverter 4 determines that the controller 8 has failed. At this time, the inverter 4 immediately executes the fault response logic, automatically blocks the main frequency command source, and switches the frequency command channel to the auxiliary frequency command source. S5: The user changes the manual adjustment signal input to the frequency converter 4 by rotating the physical speed control knob 9. The frequency converter 4 responds to the change of the manual adjustment signal and directly adjusts the power frequency output to the aerator 5 to maintain the emergency operation of the equipment.

[0038] During the normal operation phase in steps S1 to S2, the system establishes an automatic closed-loop control system based on data feedback. Controller 8, as the core computing unit, performs bidirectional data flow processing: on one hand, it reads the target command value set by the human-machine interface terminal 7; on the other hand, it synchronously collects real-time operating parameters such as pressure and temperature fed back by the sensing and monitoring components 6. Internally, controller 8 uses a preset PID control algorithm or fuzzy control logic to perform real-time calculations on the deviation between the target value and the feedback value. Based on the calculation results, controller 8 generates corresponding digital frequency control signals and continuously sends them to the frequency converter 4, thereby driving the aerator 5 to operate stably under preset constant pressure or constant current conditions, achieving dynamic response to load changes and energy efficiency optimization.

[0039] To enhance system reliability, inverter 4 is internally configured with two independent signal input channels: a main frequency command source and an auxiliary frequency command source. The main frequency command source is configured to receive digital signals from controller 8 for automatic control; the auxiliary frequency command source is configured to receive analog voltage / current signals from the physical speed control knob 9 for manual control. Inverter 4 integrates a communication status monitoring module, which is set to monitor the data flow status of the main frequency command source channel in real time and has a communication timeout threshold. This architecture enables proactive monitoring of the controller 8's operating status at the inverter 4 end, ensuring the verifiability of the logical connection between the drive unit (inverter 4) and the control unit (controller 8).

[0040] When the communication monitoring module of inverter 4 detects that the main channel has not received a valid signal for a period exceeding the preset communication timeout threshold, the internal logic of inverter 4 determines that controller 8 has experienced a communication interruption or functional failure. At this time, inverter 4 immediately triggers an internal signal source switching command, automatically blocking the input of the main frequency command source and seamlessly switching the frequency command channel to the auxiliary frequency command source. In this mode, the output frequency of inverter 4 no longer depends on the algorithm of controller 8, but directly responds to the changes in the analog signal input to the physical speed control knob 9. This mechanism constructs a hardware-level bypass control path independent of the digital control system, ensuring that the equipment can still maintain emergency operation through the physical knob in the event of controller 8 failure, thereby ensuring the continuity and safety of oxygenation operations.

[0041] In this embodiment, the real-time operating status involved in step S1 includes: The physical operating parameters collected by the sensing and monitoring component 6 include at least the exhaust pressure value of the aerator 5 and the temperature value of the motor 10. And the electrical operating parameters fed back by the frequency converter 4, which include at least the output current value and the DC bus voltage value of the frequency converter 4.

[0042] By collecting exhaust pressure and motor 10 temperature data, the system can not only perform constant pressure closed-loop control based on pressure feedback, but also monitor the thermal stability of core components in real time to prevent damage to the air bearing 18 or coils due to overheating. Simultaneously, by directly utilizing the output current and DC bus voltage feedback from the inverter 4, the controller 8 can deeply analyze mechanical load characteristics and external power supply quality. For example, it can map abnormal current as air path blockage or pipe rupture, and identify voltage fluctuations as grid instability. This method of integrating external sensor data and internal drive data achieves comprehensive diagnosis of equipment health without increasing hardware costs, greatly improving the accuracy of fault warnings.

[0043] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A high-reliability air-suspended oxygenation device, characterized in that, The utility model relates to an oxygen increasing system, including: Cabinet, the cabinet is equipped with air inlet and oxygen increasing outlet, inside installation has frequency converter; Oxygen increasing machine, install in the cabinet and by frequency converter drive, its air inlet is located in the cabinet, is equipped with air inlet and oxygen increasing outlet and is linked together; Sensing monitoring component, arrange in the cabinet or oxygen increasing machine, be used for detecting the real -time operation state of oxygen increasing machine; Man -machine interaction terminal, install in the cabinet, be used for user set up preset instruction; Controller, install in the cabinet, with man -machine interaction terminal, sensing monitoring component and frequency converter electricity connects respectively, is equipped with automatic frequency control signal to frequency converter according to preset instruction and real -time operation state; Entity speed regulation knob, set up in the outer surface of cabinet, and directly with frequency converter electricity connects; Wherein, frequency converter is equipped with the signal of response controller input to drive oxygen increasing machine, when controller fails, frequency converter response entity speed regulation knob transmission manual regulation signal regulation output frequency.

2. The high-reliability air suspension oxygenation device according to claim 1, characterized in that, The oxygen increasing machine includes a motor and a compressor driven by the motor. The exhaust end of the compressor is configured as the exhaust port. The exhaust port is connected with an exhaust pipeline. The exhaust pipeline is communicated to the oxygen increasing outlet. The motor has an outer casing. The outer casing is internally configured with a cooling gas flow channel. The exhaust end of the cooling gas flow channel is communicated to the exhaust pipeline for collecting the gas discharged from the cooling gas flow channel into the exhaust pipeline.

3. The high-reliability air suspension oxygenation device according to claim 2, characterized in that, The motor includes a stator, a rotor, an air bearing and a cooling impeller. The outer casing includes a main casing and a cooling volute connected to one end of the main casing. The stator is fixedly installed in the main casing. The side wall of the main casing is provided with a cooling air inlet hole communicated with the cooling gas flow channel. The cooling gas flow channel is formed by the gap between the outer wall of the stator and the inner wall of the main casing. The rotor is arranged in the stator and supported by the air bearing. The cooling impeller is coaxially fixedly connected with the rotor and arranged in the cooling volute. The exhaust end of the cooling gas flow channel is provided on the cooling volute and connected to the exhaust pipeline through a connecting pipe. The cooling impeller is configured to rotate with the rotor and press the gas in the cooling gas flow channel into the exhaust pipeline through the exhaust end of the cooling gas flow channel and the connecting pipe.

4. The high-reliability air suspension oxygenation device according to claim 3, characterized in that, The compressor includes a main volute and a main centrifugal impeller. The main volute is connected to the end of the main casing away from the cooling volute. The main centrifugal impeller is fixedly installed at the end of the rotor extending into the main volute. The main volute is configured with an axial air inlet and a tangential exhaust port. The axial air inlet constitutes the air inlet of the oxygen increasing machine. The tangential exhaust port constitutes the exhaust port of the oxygen increasing machine and is flange-connected with the air inlet end of the exhaust pipeline.

5. The high-reliability air suspension oxygenation device according to claim 1, characterized in that, Two air supply inlets are formed in the side wall of the cabinet, and soundproof cotton is installed at each air supply inlet; an air inlet cover is installed on the outer wall of the cabinet at a position corresponding to the air supply inlet, and the air inlet cover is in the form of a box with an open lower part, configured to allow external air to enter the air inlet cover through the open lower part, and then pass through the soundproof cotton and enter the interior of the cabinet through the air supply inlet.

6. The high-reliability air suspension oxygenation device according to claim 5, characterized in that, Two sound reduction hole plates are fixedly arranged in the interior of the cabinet, and the two sound reduction hole plates are vertically fixed in the cabinet and are connected to each other in a vertical distribution, and are located between the air supply inlet and the oxygenator, configured to form a blocking structure for the air entering through the air supply inlet.

7. The high-reliability air suspension oxygenation device according to claim 3, characterized in that, The connecting pipe is in the form of a flexible bellows, and a bypass interface is formed in the side wall of the exhaust pipe, and one end of the flexible bellows is connected to the air outlet end of the cooling volute, and the other end is connected to the bypass interface of the exhaust pipe.

8. A method for operating a high-reliability air-suspended oxygenation device, based on the high-reliability air-suspended oxygenation device according to any one of claims 1-7, characterized in that, The method comprises the following steps: S1: The controller obtains the preset instruction set by the human-computer interaction terminal, and synchronously receives the real-time running state fed back by the sensing monitoring component; S2: The controller compares the target value in the preset instruction with the feedback value in the real-time running state, and uses a preset control algorithm to process the deviation between the two, and according to the result of the processing, the controller generates an automatic frequency control signal and continuously sends it to the frequency converter, to drive the oxygenator to run under the preset working condition; S3: The frequency converter is internally provided with a main frequency instruction source and an auxiliary frequency instruction source, wherein the main frequency instruction source corresponds to receive the automatic frequency control signal from the controller, and the auxiliary frequency instruction source corresponds to receive the manual adjustment signal from the physical speed regulation knob, and the frequency converter is set to monitor the communication state of the main frequency instruction source channel in real time, and is provided with a communication timeout threshold; S4: During operation, when the frequency converter continuously fails to receive valid automatic frequency control signals within a time exceeding the communication timeout threshold, the frequency converter determines that the controller has failed, at which time the frequency converter immediately executes a fault response logic, automatically shields the main frequency instruction source, and switches the frequency given channel to the auxiliary frequency instruction source; S5: The user changes the manual adjustment signal input to the frequency converter by rotating the physical speed regulation knob, and the frequency converter responds to the change of the manual adjustment signal and directly adjusts the power frequency output to the oxygenator to maintain the emergency operation of the equipment.

9. The operation control method of the high-reliability air suspension oxygenation device according to claim 8, characterized by, The real-time running state involved in step S1 comprises: Physical running parameters collected by the sensing monitoring component, including at least the exhaust pressure value and the motor temperature value of the oxygenator; And electrical running parameters fed back by the frequency converter, including at least the output current value and the DC bus voltage value of the frequency converter.

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