An active-passive magnetic liquid pressure regulating valve based on AI

Abstract

This invention discloses an AI-based active and passive magnetic fluid pressure regulating valve, suitable for pressure management and sealing control in cold gas propulsion systems such as spacecraft, sounding rockets, and satellite attitude control devices. The device, arranged axially along the fluid channel, includes a sensing module, a valve body sealing component, a magnetic fluid sealing control module, a circumferential array electromagnetic control module, a magnetic fluid recovery module, and a central AI control module. The sensing module acquires real-time information on pressure, temperature, magnetic flux density, and fluid bridge displacement. The central AI control module integrates multimodal data for sealing status identification and prediction, and outputs electromagnetic array drive and fluid replenishment commands to achieve dynamic construction, reconstruction, and stable maintenance of the magnetic fluid bridge. The magnetic fluid recovery and refill module rapidly recovers and precisely replenishes the escaped magnetic fluid after the fluid bridge ruptures, ensuring zero leakage and long-life operation. This invention can achieve rapid response, precise adjustment, and adaptive control in extreme environments such as low temperature, high pressure, and strong vibration. Compared with traditional fixed magnetic field or mechanical pressure regulating valves, it has advantages such as high control accuracy, fast response speed, high intelligence, and strong environmental adaptability.

Description

Technical Field

[0001] This invention relates to the field of fluid control and sealing technology, and is particularly applicable to pressure regulation and sealing control in cold gas propulsion systems such as spacecraft, sounding rockets, and satellite attitude control devices. Background Technology

[0002] Cold gas propulsion systems commonly use inert gases such as nitrogen and helium as the propulsion medium, employing precision valves to regulate, protect against overpressure, and maintain pressure in storage tanks and pipelines. These valves must possess the following characteristics: maintain stable pressure within the operating pressure range to prevent damage to tanks, pipelines, and actuators from overpressure; have a safety pressure relief function to rapidly release gas when abnormal pressure accumulates; and be able to operate stably for extended periods in low-temperature, high-pressure, and vibration-impact environments. In existing projects, cold gas propulsion systems typically employ mechanical pressure regulating valves or fixed magnetic field type magnetic liquid valves to achieve these functions. A typical structure of these valves consists of a valve body, valve seat, spring-loaded mechanism, sealing elements (such as metal sealing rings, flexible sealing gaskets, or fixed magnetic fluid grooves), and a drive actuator. Their working principle relies on the balance between spring force or constant magnetic force and fluid pressure to change the valve core position, thereby regulating the flow rate or performing pressure relief. While they can provide basic sealing and pressure regulation functions under certain operating conditions, significant shortcomings remain in long-term operation and complex environments.

[0003] Sealing and regulation rely on passive mechanical balance: once the spring preload or fixed magnetic field is set, it cannot be actively corrected according to real-time changes in pressure, temperature, and acceleration during operation. When environmental conditions or operating conditions change rapidly, the valve's sealing force may be insufficient, leading to weakened sealing or premature pressure release, affecting propulsion efficiency and safety.

[0004] Low level of intelligence: Existing technologies mostly rely on manual settings or simple on / off threshold control, lacking the ability to recognize and adaptively regulate status through multi-sensor fusion, and thus cannot achieve high-precision and high-reliability sealing and pressure management in the ever-changing aerospace operating environment.

[0005] While some research schemes currently employ electromagnetic arrays for magnetic field control, most rely on manual control and lack sensing feedback capabilities and intelligent judgment mechanisms.

[0006] For example, patent CN119532453A uses a magnetic liquid for sealing, but the magnetic field source is a fixed permanent magnet, and the magnetic flux density cannot be actively adjusted according to real-time operating conditions. Lacking AI or machine learning algorithms for state prediction and control, it cannot intervene in advance, resulting in a low level of intelligence.

[0007] For example, in patent CN202422170628, the sealing of the combination valve in this patent relies on the mechanical structure cooperation. It controls the airflow only by the switching of two solenoid valves and the spring preload of the pressure reducing valve. It lacks the ability to actively adjust based on real-time pressure fluctuations, and this patent fails to guarantee zero leakage.

[0008] Therefore, this invention proposes a novel active and passive magnetic liquid pressure regulating valve that combines magnetic liquid sealing with electromagnetic array dynamic control and integrates AI state recognition and control strategies to meet the requirements of cold gas propulsion systems for zero leakage under normal conditions, rapid dynamic response, intelligent operation and long service life under extreme conditions. Summary of the Invention

[0009] This invention aims to provide a magnetic liquid pressure regulating valve that integrates AI judgment capabilities and possesses both active and passive control functions. It can automatically release pressure when it is too high and automatically rebuild the magnetic sealing layer after the pressure recovers. Furthermore, it uses a neural network model to determine whether the current sealing state is stable or requires fluid replenishment, significantly improving the system's environmental adaptability and service life.

[0010] The present invention discloses an AI-controlled active and passive magnetic liquid pressure regulating valve, comprising a sensing and detection module, a valve body sealing component, a magnetic liquid sealing control module, a circumferential array electromagnetic control module, a magnetic liquid recovery module, and a central AI control module arranged sequentially along the fluid channel axis.

[0011] The sensing and detection module includes a pressure sensor located at the outlet of the fluid channel, a temperature sensor fixed to the inner wall of the valve body, a Hall flux sensor array circumferentially embedded in the wall of the magnetic fluid tank, and an optical displacement sensor installed at the bottom of the magnetic fluid tank and the side wall of the sealing window. The pressure sensor monitors the outlet pressure value in real time, the temperature sensor detects the valve body operating temperature, the Hall flux sensor array measures the magnetic field strength distribution in the magnetic fluid tank area, and the optical displacement sensor captures the interface position and morphological changes of the liquid bridge. The sensing and detection module integrates the collected signals into the central AI control module through an isolated interface and a sealing perforator.

[0012] The valve body sealing component is arranged axially along the fluid channel between the sensing and detection module and the magnetic liquid sealing control module, forming the main pressure-bearing sealing boundary of the system. This component mainly includes a housing, an end cap, and a metal seal disposed between the two. The housing is precision-cast from non-magnetic high-strength aluminum alloy, and its inner wall undergoes hard anodizing treatment to form a wear-resistant and corrosion-resistant coating, effectively improving surface hardness and media compatibility. The pressure plate is connected to the housing by high-strength alloy fasteners, and a metal O-ring or copper gasket is provided at the pressing surface to achieve static sealing.

[0013] The magnetic liquid sealing control module is located in the middle of the main channel of the valve body and is the main sealing unit of this invention. This module includes magnetic liquid inlets arranged on both sides of the channel, into which a magnetic liquid with high magnetic responsiveness, low evaporation rate, and wide operating temperature characteristics is injected; the inner wall of the inlet has spiral microgrooves and is connected to a storage chamber. The magnetic liquid is preferably composed of coated nano-Fe3O4 particles suspended in a fluorocarbon carrier liquid. Under the action of a magnetic field, the magnetic liquid is stretched on both sides of the channel inlet to form a suspension bridge structure, achieving a dynamic seal without mechanical contact.

[0014] The circular array electromagnetic control module is located inside the valve body housing, with several electromagnetic control units arranged around the magnetic fluid sealing area. Each unit consists of a winding coil, a magnetic shielding ring, a front pole shoe, front pole teeth, a rear pole shoe, rear pole teeth, and a shaft, arranged in a circular array to achieve independent and precise control of the local magnetic field strength and direction. Through the orderly excitation of this module, a high-gradient magnetic field is established in different areas of the liquid bridge, realizing programmable morphological reconstruction and positioning maintenance of the magnetic fluid. The electromagnetic array supports rapid switching, regional shielding, and reconstruction control, and is suitable for operating conditions such as frequent opening and closing and complex pressure changes.

[0015] The magnetic fluid recovery module includes a magnetic fluid guide channel and an adsorption and storage structure assembly. When the liquid bridge structure breaks due to external impact or pressure fluctuation, the escaped magnetic fluid will be temporarily stored in a hydrophilic material or microporous guide tube, and under the control of the central AI control module, it will be magnetically attracted back to the channel opening area, realizing the re-guidance of the magnetic fluid and the self-healing of the liquid bridge.

[0016] The central AI control module is located in the bottom compartment of the valve body, and it embeds a multimodal neural network model and a state control chip. It has the functions of self-learning, self-identification, and control signal output of sealing state. This module dynamically matches the sensor data with the historical model, and can dynamically adjust the output strategy of the electromagnetic array according to different state levels. At the same time, it links with the magnetic fluid compensation system to realize the rapid repair and state restoration of the sealing structure.

[0017] In a preferred embodiment, the present invention includes an anti-impact baffle and a liquid film guiding structure below the magnetic liquid sealing groove to cope with the rupture of the liquid bridge caused by sudden pressure shocks in the system. This structure consists of three parts: an arched anti-impact baffle, a liquid film trapping layer, and a guiding channel. When the liquid bridge is damaged by impact, the escaping magnetic liquid preferentially impacts the anti-impact baffle rather than scattering and flowing out, and is subsequently trapped by the hydrophilic structure and introduced into the storage chamber along the guiding channel. This design provides a time buffer for the AI ​​system response, while ensuring secondary recovery and closed-loop supply of the magnetic liquid, improving the safety redundancy and operational stability of the entire device. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of a magnetic liquid pressure regulating valve based on AI active and passive control.

[0019] The components are: 1-outer shell, 2-pressure plate, 3-rolling bearing 1, 4-compression spring, 5-locking nut, 6-shaft, 7-rolling bearing 2, 8-shaft sleeve 1, 9-stage shoe 1, 10-pole tooth 1, 11-coil 1, 12-magnetic ring, 13-coil 2, 14-pole tooth 2, 15-pole shoe 2, 16-shaft sleeve 2, 17-sensor, 18-shaft sleeve 3, 19-baffle.

[0020] Figure 2 This is a schematic diagram showing the arrangement of coils 1 and 2. Detailed Implementation

[0021] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the following embodiments are merely illustrative and do not limit the scope of protection of the present invention.

[0022] This embodiment describes a magnetic liquid pressure regulating valve based on AI active and passive control, such as... Figure 1 As shown, the main components along the fluid channel axis include, in sequence: a sensing and detection module, a valve body sealing component, a magnetic liquid sealing control module, a circumferential array electromagnetic control module, a magnetic liquid recovery module, and a central AI control module.

[0023] The aforementioned sensing module (16) is used for multimodal real-time sensing of the valve's operating status, providing highly reliable data support for AI judgment and closed-loop control. See also... Figure 1In this embodiment, a pressure sensor is arranged at the outlet of the flow channel. The sensor used is preferably a low-temperature resistant, high-precision microelectromechanical (MEMS) pressure chip. The range is selected from 0 to 10 MPa or higher according to the propulsion system design, the accuracy is preferably ≤ ±0.1%FS, and the sampling rate can reach 1 kHz to 5 kHz. Temperature sensors (low-temperature thermocouples, marked T) are arranged at key nodes of the valve body to compensate for the temperature drift of the magnetic fluid and coil. Hall magnetic flux sensor arrays are embedded circumferentially on both sides of the magnetic fluid tank. The array spacing is preferably 0.5 to 2.0 mm, and the distance between the sensor and the tank surface is preferably 0.2 to 1.0 mm to achieve spatial resolution of the magnetic field distribution. Displacement / interface measurement units are set at the bottom of the tank and the window. Optical interferometric displacement sensors are preferably used, with a resolution of up to the micrometer level, to accurately track the liquid bridge boundary position. The aforementioned sensors' shielded differential signal lines (shielded twisted-pair or coaxial) converge into a local signal conditioning unit (including anti-aliasing filtering, a 16-bit ADC, and a programmable gain amplifier). This local unit transmits digital data via a real-time bus (e.g., isolated CAN → to the central AI control module) using isolated opto- / magnetic isolators. All signal paths are sealed with a perforator before entering the valve body to ensure cavity tightness. This embodiment preferably provides redundant channels and a self-testing mechanism (self-calibration pulse, zero / full-scale verification) in the sensing link to meet aerospace-grade reliability requirements.

[0024] The valve body sealing components include: a housing (1), a pressure plate (2), a rolling bearing 1 (3), a compression spring (4), a locking nut (5), a shaft (6), a rolling bearing 2 (7), a bushing 1 (8), a bushing 2 (16), a bushing 3 (18), and a baffle plate (19). The housing (1) is preferably made of non-magnetic high-strength titanium alloy, and the inner wall is hard anodized to improve wear resistance and corrosion resistance. A metal O-ring seal is provided between the pressure plate (2) and the housing.

[0025] The aforementioned magnetic liquid sealing control module is used to construct a controllable liquid bridge and ensure its stability and reproducibility under steady-state and disturbance conditions. See also Figure 1In this embodiment, mirrored magnetic fluid inlets are formed on the left and right inner walls of the main fluid channel. The inlets are preferably made of high-permeability magnetic material 2Cr13, with a U-shaped semi-elliptical cross-section and a depth of 2 mm. The width is matched with the liquid bridge gap to make the initial liquid bridge cross-section controllable. The inner wall of the inlets is laser-etched to form equally spaced spiral microgrooves. The groove parameters are preferably: pitch 1.5 mm and depth 0.3 mm, to enhance the mechanical anchoring and capillary traction of the magnetic fluid. A liquid injection buffer cavity is provided behind the inlets, which is connected to the baffle plate 19. The volume and geometry of the buffer cavity are designed according to the magnetic fluid volume (e.g., 0.1-5 mL range is selectable). In this embodiment, the magnetic fluid is preferably SiO2-coated Fe3O4 nanoparticles dispersed in a fluorinated polyether (PFPE) carrier liquid, with a particle size preferably of 10-30 nm, exhibiting rheological properties of high magnetic response, low volatility, and a wide temperature range (-50℃ to +150℃). To avoid bubbles and agglomeration, degassing and ultrasonic / vacuum-assisted filling processes are used during filling to achieve inter-chamber connectivity and uniform filling. For visual / optical monitoring, a quartz optical detection window (preferably 0.3-2.0 mm thick, flatness λ / 10) is provided above the liquid bridge area, and a metal sealing ring or glass-to-metal welded structure is used around the window to meet vacuum / low-temperature sealing requirements. The module's structure also considers hydrodynamic dispersion (conical flow distribution structure) to reduce the damage of impact loads to the liquid bridge, and the distance, tolerance, and assembly clamping method to the electromagnetic unit are specified in the design to ensure that the liquid bridge can be formed and repeatedly reconstructed under the electromagnetic field.

[0026] The aforementioned circular array electromagnetic control module is used for high-resolution spatial magnetic field modulation of the liquid bridge, achieving coordinated active and passive pressure regulation and rapid pressure relief. (See also...) Figure 2The circular array electromagnetic control module consists of several micro electromagnetic units. Each unit is composed of a winding coil 1 (11), a winding coil 2 (13), a magnetic shielding ring (12), a front pole shoe 1 (9), a front pole tooth 1 (10), a rear pole shoe 2 (15), a rear pole tooth (14), and a shaft (6). The front end of the pole shoe is a semi-elliptical convex surface or a customized curvature to optimize magnetic field coupling. The pole teeth are finger-shaped, and the width and spacing of a single tooth are preferably in the range of 0.2-1.0 mm, so that the pole teeth can be used as magnetic flux "pixels" for independent excitation and deformation traction. Each electromagnetic unit is arranged in a tightly packed circular pattern along the circumference to reduce magnetic flux dead zones. The outside is formed by a closed magnetic ring and a magnetic shielding layer (such as a μ metal sheet or a high-permeability alloy + PEEK coating) to form an efficient closed magnetic circuit and isolate external sensitive electrons. Each unit is independently controlled by a local driver (including Hall current sensing, PWM control, and an insulated drive bridge). The driver and the central AI module use isolated communication to achieve low-latency command distribution. The preferred electrical parameters are DC / PWM drive, with an operating voltage of 12-200 V (depending on the number of turns and magnetic flux requirements). The drive frequency is adjustable between a few kHz (on / off) and 20 kHz (PWM) to balance efficiency and noise. Each unit synthesizes a magnetic field of specific intensity and distribution in space by adjusting the magnitude and direction of the excitation current, thereby precisely controlling the morphology, position, and sealing pressure of the magnetic fluid and achieving dynamic regulation of fluid flow and pressure. To ensure high reliability, the electromagnetic units are treated with epoxy potting, thermal conductive pads, and heat sinks after assembly. The pole shoes / tooth surfaces are preferably electroplated or coated with ceramic to reduce friction and prevent corrosion. The array supports three operating modes (steady-state hold, dynamic adjustment, and fault recovery) and incorporates a hardware watchdog and overcurrent protection on the drive interface.

[0027] The described circular array electromagnetic control module also includes a magnetically conductive and magnetic circuit closed structure to improve magnetic field utilization, reduce magnetic leakage, and provide thermal and mechanical support. See also Figure 1 The magnetic rings are arranged around the electromagnetic array, preferably made of high-permeability alloy or μ metal. The shape, thickness and node position of the magnetic rings are optimized by finite element magnetic field simulation to maximize the uniformity of magnetic flux in the sealed area. The magnetic rings are covered with a magnetic shielding layer 311 (composite insulating material) to isolate the magnetic field from the control electrons and provide electrical insulation. The bottom side of the magnetic rings is provided with heat dissipation fins and a temperature control sensing interface for temperature monitoring and thermal management during high-power operation. To prevent uncontrollable coupling of the magnetic circuit by external structures (such as the housing (1)), an insulating support is provided between the magnetic rings and the housing and a pre-tight assembly is achieved. Low-permeability isolation disks can be set between the magnetic rings or between the magnetic field strengthening disks to form the desired magnetic field gradient.

[0028] The magnetic fluid recovery module is used to efficiently recover magnetic fluid after a liquid bridge ruptures or leaks, and to refill it as needed, maintaining magnetic fluid balance and zero-leakage performance. See also... Figure 1An arched anti-impact baffle (19) (material such as zirconia ceramic or reinforced PEEK) is arranged below the liquid bridge. The back surface of the baffle is covered with an annular microporous adsorption layer (modified ceramic or hydrophilic coating) to form a liquid film trapping area. The trapped liquid flows into the left guide channel through several converging micropores. A magnetic response polymer coating is set at the bottom of the guide channel to enhance the magnetic liquid aggregation efficiency. The tail end of the guide channel is connected to the side wall liquid storage chamber (capacitance preferably 0.5-10 mL depending on the application). The liquid storage chamber is equipped with a liquid level detector (capacitive or optical) to provide real-time remaining information.

[0029] The central AI control module (16) and drive interface are used to fuse sensor data, execute state recognition algorithms, and issue drive / liquid replenishment commands. See also Figure 1 The AI ​​model used in this embodiment is a lightweight multimodal neural network. The module achieves precise control of the magnetic liquid sealing system through the collaborative operation of the built-in real-time safety core and inference core. The real-time safety core is responsible for executing high-frequency, low-latency closed-loop control and system protection commands to ensure the valve's immediate response and operational safety; the inference core runs a multimodal neural network algorithm, comprehensively analyzes multimodal sensor data such as pressure, temperature, magnetic field distribution, and liquid bridge displacement, identifies the stability of the sealing state, predicts pressure fluctuation trends, and dynamically generates magnetic field control strategies to drive the circumferential array electromagnetic units to work together, ultimately achieving adaptive switching of the valve between three modes: steady-state maintenance, dynamic pressure regulation, and rapid fault recovery.

[0030] The control logic of the central AI control module is implemented based on a multi-state machine, including steady-state control mode, dynamic pressure regulation mode, and fault recovery mode. In steady-state control mode, the system maintains the current magnetic field configuration to ensure sealing stability. In dynamic pressure regulation mode, the system dynamically adjusts the electromagnetic unit output based on real-time pressure data to achieve precise pressure control. In fault recovery mode, the system initiates a recovery process including partial magnetic demagnetization and pressure relief, and magnetic fluid recovery. The drive layer uses a high-voltage isolated drive module, which integrates current closed-loop detection, temperature monitoring, soft start, and short-circuit protection functions. The communication interface supports redundant CAN bus or isolated RS-485 interface to meet the bus docking requirements of aerospace applications. The module also features hardware redundancy and dual-power supply redundancy design, and supports the recording of all control action logs and the reporting of telemetry data.

[0031] Typical Workflow and Implementation Example: Taking a single "pressure relief-recovery" cycle as an example, in steady state (stable state), the AI ​​core maintains the annular symmetrical excitation in a low-power mode to stabilize the liquid bridge. When the inlet pressure sensor detects a sudden increase within 1-10ms and the displacement sensor shows signs of liquid bridge shortening, the AI ​​inference core determines "critical leakage" by fusing the magnetic field decline mode of the Hall array. The real-time safety core issues an emergency command, shutting down or reversing several local electromagnetic pixels within milliseconds to form a controllable channel, assisted by a flow guiding structure to achieve controlled pressure relief. After pressure relief, the pressure drops, and the AI ​​enters the "reconstruction" subroutine: gradually restoring the excitation of the selected electromagnetic unit according to a pre-defined strategy sequence, while simultaneously driving the circular array electromagnetic control module to reconstruct the global magnetic circuit and monitoring the reconstruction signal of the displacement / optical window, until the liquid bridge recovers to the judgment threshold and steady-state closed-loop confirmation is achieved. In this embodiment, the above process employs a watchdog timer and a dual-channel confirmation mechanism.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. An AI-based active and passive magnetic liquid pressure regulating valve, comprising a sensing and detection module, a valve body sealing component, a magnetic liquid sealing control module, a circumferential array electromagnetic control module, a magnetic liquid recovery module, and a central AI control module arranged sequentially along the fluid channel axis.

2. The AI-based active and passive magnetic liquid pressure regulating valve according to claim 1, characterized in that: The sensing module includes a pressure sensor located at the fluid channel outlet, a temperature sensor fixed to the inner wall of the valve body housing, a Hall flux sensor array circumferentially embedded in the wall of the magnetic fluid tank, and an optical displacement sensor installed at the bottom of the magnetic fluid tank and on the side wall of the sealing window. The sensing module is connected to the central AI control module via an isolated interface and a sealing perforator.

3. The AI-based active and passive magnetic liquid pressure regulating valve according to claim 1, characterized in that: The valve body sealing component mainly consists of a shell, a pressure plate, and a metal seal between them, which is arranged axially along the fluid channel between the sensing and detection module and the magnetic liquid sealing control module. The pressure plate and the shell are statically sealed together by the metal seal, forming the main pressure-bearing sealing structure of the system.

4. The AI-based active and passive magnetic liquid pressure regulating valve according to claim 1, characterized in that: The magnetic liquid sealing control module is located in the middle section of the main channel of the valve body; the module includes magnetic liquid tanks machined on the left and right inner walls of the main fluid channel; the magnetic liquid tanks are filled with magnetic liquid; the inner wall of the magnetic liquid tanks is machined with spiral microgrooves; the bottom of the magnetic liquid tanks is connected to a liquid storage chamber via a microchannel; a baffle plate is connected to the outlet of the liquid storage chamber.

5. The AI-based active and passive magnetic liquid pressure regulating valve according to claim 1, characterized in that: The circumferential array electromagnetic control module is located inside the valve body housing, with several electromagnetic control units arranged around the magnetic fluid sealing area. Each unit consists of a winding coil, a magnetic shielding ring, a front pole shoe, a front pole tooth, a rear pole shoe, a rear pole tooth, and a shaft. The electromagnetic units are arranged closely in a circumferential pattern, with an efficient closed magnetic circuit formed by a closed magnetic ring and a magnetic shielding layer on the outside. The bottom is equipped with heat dissipation fins and a temperature control sensing interface, and an insulating support structure is provided between it and the valve body housing. It is fixed by pre-tight assembly.

6. The AI-based active and passive magnetic liquid pressure regulating valve according to claim 1, characterized in that: The magnetic fluid recovery module includes an anti-collision baffle located directly below the magnetic fluid tank, a hydrophilic porous adsorption layer attached to the back of the anti-collision baffle, and a return pipeline connecting the hydrophilic porous adsorption layer and the liquid storage buffer chamber.

7. The AI-based active and passive magnetic liquid pressure regulating valve according to claim 1, characterized in that: The central AI control module is fixed in the compartment at the bottom of the valve body housing by a mounting bracket, and is electrically connected to the sensing and detection module and the circumferential array electromagnetic control module by a sealed connector.

8. The AI-based active and passive magnetic liquid pressure regulating valve according to claim 1, characterized in that: The central AI control module switches its operating mode according to the signal from the sensing and detection module, and controls the shape of the magnetic liquid bridge by adjusting the current of each electromagnetic unit in the circumferential array electromagnetic control module. When the pressure suddenly increases and the liquid bridge breaks, the magnetic liquid recovery module recovers the magnetic liquid through a hydrophilic porous adsorption layer and sends it back to the storage buffer chamber through the return pipeline.

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