1371 results about "Fluid control" patented technology

The invention discloses a method and system for controlling the opening degree of a pipeline flow automatic adjusting valve, and relates to the technical field of automatic control. The method comprises the steps that real-time flow data in a pipeline and real-time pressure difference data of upstream and downstream of a valve are obtained; comparing the real-time flow data with a preset target flow to obtain a flow deviation, and generating a feedforward compensation signal by a proportional-integral-differential controller according to the flow deviation and the real-time pressure difference data; the flow deviation is input into a PID controller, and a proportional-integral-differential controller generates a feedback control signal; generating a composite control signal according to a superposition result of the feed-forward compensation signal and the feedback control signal; and the electric actuating mechanism is driven to adjust the opening degree of the valve according to the compound control signal, the actual opening degree of the valve is obtained through the position sensor, and the actual opening degree is fed back to the proportional-integral-differential controller. The invention provides a brand new solution with high robustness, high precision and low maintenance cost for industrial fluid control.

The invention relates to the technical field of fluid control and management, in particular to a multi-stage pressure and noise reduction regulating valve which is characterized in that a fluid channel is arranged in a valve body and comprises a fluid outlet and a fluid inlet; the valve seat comprises a multi-layer valve cylinder and a first opening, a first throttling hole is formed in the multi-layer valve cylinder, and the first throttling hole communicates with the fluid inlet; the valve cage is fixedly connected with the valve seat and comprises a multi-layer valve wall and a first through hole, one end of the first through hole is connected with the first open hole, and the multi-layer valve wall is provided with a second throttling hole communicated with the fluid outlet; the valve cover is fixedly connected with the valve body; the valve plug is slidably arranged in the cavity; the valve rod is fixedly connected with the valve plug and arranged in the second through hole in a sliding mode. The valve cylinders and the valve walls are each provided with three layers, the first throttling holes in every two adjacent valve cylinders are arranged in a staggered mode, and the second throttling holes in every two adjacent valve cages are arranged in a staggered mode. Through the multiple layers of valve cylinders and the staggered throttling holes in the valve wall, the frequency of bubble formation and collapse is reduced, and fluid noise and the erosion risk of equipment are reduced.

The invention relates to the technical field of fluid control, and discloses a split type mass flow controller calibration method, system and equipment. According to the method, a control unit, a valve unit, a detection unit and a fluid passage unit are connected through detachable interfaces through a split type modular design, and the problem that a traditional integrated structure is difficult to calibrate and maintain is solved. A flow mapping relation model is established by adopting temperature difference and pressure data, and dynamic correction is performed in combination with an environment temperature compensation coefficient, so that the detection precision is remarkably improved. Through cooperative control of a flow closed loop and a valve element displacement closed loop, precise adjustment of the opening degree of the valve is achieved, and the stability and the dynamic response performance of flow control are effectively improved. The system has the advantages of being flexible in structure, high in calibration precision and high in environmental adaptability, and is suitable for the high-precision flow control field of semiconductors, biological medicine and the like.

The utility model discloses a container forming system suitable for cleaning and sterilizing a container, a clamp, a mold and the interior of the container, the clamp and the mold. The container forming system comprises a sealing mechanism, a stretching rod device, the mold, a fluid controller, a fluid recovery pipeline, a storage cylinder body and corresponding switch valves, the system can be widely applied to all implementation stages of the whole production process flow of injecting pressurized fluid into various types of preforms to form containers, and is particularly applied to equipment for hydroforming and synchronously filling the containers, and the sealing mechanism is provided with a middle channel and a one-way valve and is connected with corresponding fluid; the stretching rod device also has various corresponding stretching rod deformations, and the container, the clamp, the mold and the interior of the stretching rod device can be cleaned and sterilized through two stages, so that waste and discharge of pressurized fluid can be prevented, serious sanitation problems are avoided, and production of sterile bottles is ensured; and the liquid level of the container after hydraulic forming and synchronous filling and the influence of foam on the liquid level are effectively controlled.

The invention discloses a display screen defect detection system and a use method thereof. The use method comprises the following steps: S1, controlling a workpiece fixing module to adsorb and fix a display screen placed on a working platform; s2, acquiring edge curvature data of the display screen through a curvature identification module, and sending the edge curvature data to a central control module; s3, the central control module generates a first control instruction based on the received curvature data, the central control module drives the fluid control unit to precisely regulate and control the gas supply amount of each gas bag according to the edge data obtained by the curvature recognition module through the flexible supporting structure formed by connecting the rotatable subunits in series and the pneumatically-driven deformation driving part, and the gas supply amount of each gas bag is adjusted and controlled. And the bending radian of the self-adaptive detection module is dynamically matched with the curvature of the display screen. Metal wires and reinforcing wires in the air bag cooperatively provide structural support and cooperate with magnetic sheets to adsorb a magnetic field to stabilize the rotation angle, and it is ensured that the lighting unit and the image acquisition assembly strictly follow the curved surface profile.

The invention provides an online monitoring device for multiple nuclides in liquid effluent, and particularly relates to the technical field of radioactive substance detection. The online monitoring device comprises a shell, a cascade separation module, a fluid control module, a detection module and a control system, the cascade separation module, the detection module and the control system are arranged in the shell, the cascade separation module comprises a plurality of resin columns and a plurality of separated liquid collecting bottles communicated with the resin columns, and the separated liquid collecting bottles are communicated with the resin columns. The fluid control module comprises a liquid storage device, an injection pump and a control valve, the liquid storage device is respectively communicated with the plurality of resin columns through pipelines, the injection pump and the control valve are respectively arranged on the pipelines and are used for controlling the flow direction and the flow velocity of fluid in the liquid storage device, and the detection module is used for detecting the radioactive activity of nuclide; the control system is used for controlling operation of the cascade separation module, the fluid control module and the detection module. According to the invention, synchronous monitoring of multiple nuclides is realized, the multi-nuclide monitoring efficiency is improved, and the monitoring cost is reduced.

A fluid control valve includes a valve housing having a fluid inlet and a fluid outlet. A valve body is disposed within the valve housing and is transitional relative to the valve housing between an open position and a closed position. In the closed position, the valve body prevents fluid flow between the fluid inlet and the fluid outlet. The valve body is incrementally transitional from the closed position to the open position to incrementally increase the amount of fluid flow from the fluid inlet to the fluid outlet. A flow control element is positioned within the valve housing downstream of the valve body. The flow control element includes a peripheral body and an inward body having a plurality of flow control passageways extending therethrough. The flow control element additionally includes an opening defined collectively by the peripheral body and the inward body.

The invention relates to the technical field of fluid control equipment, and discloses an anti-backflow valve which comprises a valve body, a valve rod, a sealing valve seat and a valve plate, an output pipe is arranged on the outer wall of the right side of the valve body, an input pipe is arranged at the bottom of the valve body, the sealing valve seat is fixedly installed in the input pipe, and the valve plate is pressed on the sealing valve seat. The valve rod is rotated to drive the connecting disc to rise, the spring drags the valve plate to rise, the valve plate is separated from the sealing valve seat, the inserting rod is arranged, on one hand, the valve plate is guided, on the other hand, when the valve needs to be closed, the valve rod can drive the inserting rod to move downwards, and then the valve plate is tightly pressed on the sealing valve seat; if the water pressure in the input pipe is lower than the water pressure in the valve cavity of the valve body, the pressure acting on the upper surface of the valve plate can downwards press the valve plate at the moment, then the valve plate is pressed on the sealing valve seat, the valve is closed, and then the backflow problem is avoided.

The invention provides a pipeline water hammer monitoring method, device and equipment, and relates to the technical field of oil and gas pipeline monitoring. The method is applied to an SCADA system and comprises the steps that a detected trigger signal of fluid control equipment in an oil conveying pipeline is responded, a pressure signal and a flow signal in the oil conveying pipeline are obtained, and microsecond-level timestamps, corresponding to the trigger signal, of the pressure signal and the flow signal serve as time references; determining physical sparse characteristics according to the pressure signal and the flow signal; and determining whether an event corresponding to the trigger signal is a water hammer based on the physical sparse feature. According to the invention, the accuracy of water hammer positioning is improved.

The invention discloses a flexible riser vibration response characteristic analysis method, and relates to the technical field of ocean engineering. According to the method, a flexible riser vibration model is established based on a vibration theoretical model and a fluid control equation for vibration analysis, a theoretical time domain response curve of the flexible riser is obtained through MATLAB calculation, and then a flexible riser three-dimensional simulation model is established in an ANSYS Workbench integrated simulation platform. According to the method, a flexible riser three-dimensional simulation model is constructed, material constitutive parameters, boundary conditions and load application of the flexible riser three-dimensional simulation model are configured, then simulation is performed in an ANSYS Workbench integrated simulation platform by using the flexible riser three-dimensional simulation model, bidirectional fluid-solid coupling analysis is performed by coupling a Fluent flow field system and a Transient Stratum module, the radial displacement time history of the flexible riser under a preset working condition is obtained, and the radial displacement time history of the flexible riser under the preset working condition is calculated. And extracting resonance characteristics of the flexible riser. According to the method, the vibration response characteristics of the deep-sea flexible riser under the influence of internal and external fluids in the service process are accurately obtained, and a foundation is laid for guiding the structural stability of a deep-sea operation system.

The invention discloses a quick-change type ball valve with double mechanical interlocking assemblies, and particularly relates to the technical field of fluid control equipment, the quick-change type ball valve comprises a first ball valve and a second ball valve, and the second ball valve is installed on the side face of the first ball valve through a buckle; the first ball valve comprises a first valve element, a first valve seat, a first ball valve handle, a marble, a first pin and a first connecting buckle, a circular hole is formed in the upper wall of the first valve seat, a horizontally-placed first rectangular fillet long plate is arranged above the first ball valve handle, and a second arc-shaped groove is formed in the fillet position; a vertically-placed first threaded long rod structure is installed below the first rectangular fillet long plate, the first threaded long rod structure of the first ball valve handle vertically penetrates through a first circular hole of the first valve seat, and the first threaded long rod structure is rotationally connected with the first circular hole of the first valve seat.

The utility model discloses a pressure balance fluid control valve which comprises a valve body provided with an input interface and an output interface, and the valve body is connected with an external pipeline through the input interface and the output interface; the valve element assembly is arranged in the valve body and used for controlling connection and disconnection between the input connector and the output connector. The pressure conduction assembly is connected with the valve element assembly so as to conduct pressure borne by the side, opposite to the fluid, of the valve element assembly to the other side of the valve element assembly. Pressure balance on the two sides of the valve element is achieved through pressure conduction, operating force is reduced, abrasion is reduced, the stability of the valve is improved, the service life of the valve is prolonged, and the overall reliability is enhanced.

Provided is a fluid control valve that is less likely to malfunction due to contamination. The fluid control valve includes a valve housing which includes an inflow passage and a discharge passage; a valve seat which is disposed between the inflow passage and the discharge passage, and a valve body which includes a guide portion guided by an inner surface of the valve housing and a seal portion brought into contact with and separated from the valve seat, the guide portion of the valve body includes a flat surface and a tapered surface tapered toward a side of the seal portion.

The present invention relates to an incubation system for liquid-based incubation of prematurely born infants, comprising: —an inner chamber forming an amniotic basin comprising amniotic fluid, said basin being configured for holding said infant and being made from a flexible material configured for expanding said inner chamber volume in correspondence with the growth of said infant; —an outer chamber enclosing said inner chamber and comprising a temperature regulation fluid, —a fetal connection port, arranged for connecting with the umbilical cord of said infant, said umbilical cord providing a port in said inner chamber to said infant for providing dialyzation and nutrition compounds to said infant via said umbilical cord; —a fetal control unit, connected to said fetal connection port for control of said dialyzation and control of said provided nutrition by monitoring and controlling one or more of a pressure, flow and temperature thereof; an amniotic fluid circulation unit, arranged for connecting with an inlet / outlet port of said inner chamber and comprising a pump for circulating said amniotic fluid from said inner chamber and through a purification system located outside said inner chamber; and —a temperature regulation fluid control unit, arranged for connecting with an inlet / outlet port of said outer chamber and comprising a pump for circulating said temperature regulation fluid from said outer chamber and through a heat exchanger system located outside said inner chamber.

The invention relates to the technical field of fluid control, and discloses a drip-proof self-adaptive fluid dispensing control method and system. The method comprises the following steps: acquiring an image sequence, pressure data and viscosity change data when fluid is disconnected; positioning an abnormal disconnection moment, extracting a corresponding picture, and extracting a necking diameter and a necking length from the picture; calculating the real-time change rate of the necking diameter based on the necking parameters, obtaining the state identification that the fluid is about to be disconnected, and predicting the disconnection opportunity; integrating the cut-off opportunity predicted value and the viscosity data to obtain a comprehensive data set, and calibrating core parameters to generate an adaptive signal waveform; acquiring a real-time flow velocity data correction waveform, and generating an optimization control signal; and extracting a key intervention point, applying pulse intervention, calculating the colloid residual quantity, performing iterative optimization if the colloid residual quantity exceeds a preset threshold value, and performing no intervention if the colloid residual quantity does not exceed the preset threshold value, thereby finally obtaining a non-leakage control sequence. According to the method, the necking characteristic of the fluid can be accurately captured, the working condition is dynamically adapted, non-dripping dispensing is realized, and the control precision and stability are improved.

The fluid control device 100 includes a valve control device 20 capable of communicating with an external device 30 and a valve 10 connected to the valve control device, and the valve control device 20 includes a valve driving circuit 22 for driving the valve, a digital communication circuit 26 connected to the valve driving circuit, and an input / output terminal 24 connected to the valve driving circuit, a digital communication circuit provided in the external device and the digital communication circuit 26 of the valve control device are configured to digitally communicate with each other, and a power supply and an analog communication circuit provided in the external device can be connected to the input / output terminal 24 of the valve control device by an integral cable C2 having at least four wires therein and connector AC, and power and analog signals are supplied from the external device via the input / output terminal 24.

The invention discloses a flip flow energy dissipation scouring numerical simulation method and device and a storage medium, and relates to the technical field of water conservancy projects. The method comprises the steps that a multiphase fluid model and physical parameters are set in a CFD solver, and a fluid control equation is solved; a particle set is generated in the DEM solver, and physical and mechanical parameters and interaction parameters of particles are set; the CFD solver calculates the acting force of the fluid on the particles based on the flow field information and transmits the acting force to the DEM solver; the DEM solver solves a particle motion equation according to the acting force, the motion state of the particles is updated, and the updated motion state of the particles is transmitted back to the CFD solver; the CFD solver solves the fluid control equation again according to the particle motion state, and the flow field information is updated. According to the method, the interaction process between the fluid and the particles is considered, information interaction between fluid distribution and particle movement is achieved, and the simulation precision of the hydraulic scouring process is improved.

The invention relates to the technical field of energy storage systems, in particular to a cooling device and an energy storage container. The cooling device comprises an injection pipeline and a fluid control piece, and the injection pipeline is used for guiding a cooling medium; the injection pipeline comprises a first pipe and a second pipe, and the second pipe and a battery cell of the battery module are both located in an inner cavity of a shell of the battery module; the fluid control piece is used for controlling the cooling medium to flow in the injection pipeline; the fluid control piece is fixed on the battery module and is provided with a fluid inlet and a fluid outlet, the fluid inlet is communicated with the first pipe, and the fluid outlet is communicated with the second pipe; when the battery cell is in thermal runaway, the cooling device sprays the cooling medium to the inner cavity of the shell of the battery module to cool the battery module in thermal runaway, so that the adjacent battery module is prevented from being influenced by high temperature generated by the battery cell, and the harm and economic loss generated by the thermal runaway of the battery cell are reduced.

The invention relates to the technical field of medical diagnosis, and discloses an integrated nucleic acid detection method and device based on a micro-fluidic chip, the integrated nucleic acid detection device comprises a micro-fluidic chip module, a liquid control module, a temperature control module, an optical detection module and a data processing module, and the multiple modules work cooperatively to realize full-process automatic detection of a sample from splitting decomposition to detection; the micro-fluidic chip module comprises a sample treatment area, a nucleic acid extraction and purification area, a nucleic acid amplification area, a nucleic acid detection area and a waste liquid collection area which are connected through a micro-channel, and a valve is arranged at a key node. Through a fluid control mode combining centrifugal force and air pressure driving and valve combination of non-complex micro-pump micro-valves such as the dissolvable membrane valve, the temperature sensitive valve and the capillary force flow limiting valve, full-flow fluid sequential control can be achieved without integrating a plurality of micro-pump micro-valves; the problems of complex structure, high manufacturing difficulty and high cost caused by integration of multiple micro-pumps and micro-valves of the conventional pressure-driven micro-fluidic chip are solved.

The present invention achieves a larger flow rate of a fluid control valve without increasing a size of an orifice or an actuator. The fluid control valve includes an orifice having a valve seat surface and a valve body having a seating surface to be seated on the valve seat surface. The orifice has a plurality of inflow ports and a plurality of outflow ports that are open along a first direction on the valve seat surface. The plurality of inflow ports and the plurality of outflow ports are arranged side by side in a second direction intersecting the first direction.

To provide a structure for easily arranging a control board in a flow rate ratio control device.SOLUTION: The fluid control device includes a plurality of fluid control devices 2 in which a fluid sensor 22 and a fluid control valve 23 are provided in a flow passage block 21, and a control board 4 for controlling the plurality of fluid control devices 2, and the control board 4 is erected on an upper surface of the flow passage block 21 along an arrangement direction of the plurality of fluid control devices 2.SELECTED DRAWING: Figure 1

The invention relates to the technical field of cone valve multi-mode air supply-energy dissipation cooperative cavitation reduction devices and control methods, and discloses a fluid control device named'cone valve multi-mode air supply-energy dissipation cooperative cavitation reduction devices and control methods'. The conical valve aims to solve the problems that an existing conical valve is serious in cavitation under the working condition of high pressure difference, air supply and energy dissipation functions are separated, and response lags. The device is characterized by comprising three stages of energy dissipation perforated pipes which are arranged at the outlet end of a valve body in a gradient mode, negative pressure injection air supply pipes which are symmetrically arranged outside a flow guide cover and flow guide fins which are welded to the inner wall of a cone, and the three stages of energy dissipation perforated pipes, the negative pressure injection air supply pipes and the flow guide fins cooperate to achieve pressure gradient pressure relief, self-adaptive air supply and flow state stability; the control method dynamically adjusts the air supply intensity based on the opening degree, the pressure difference and the vibration signal. According to the technical scheme, cavitation inception and collapse impact are remarkably restrained, vibration noise is reduced, the service life of the valve is prolonged, an external air source is not needed, the system pressure drop is controllable, and the system is suitable for ultrahigh pressure difference and large-flow hydroelectric working conditions.

According to the gas-liquid dual-purpose control valve based on shape memory alloy wire driving, the problems of wire overload and sealing failure of a traditional SMA wire driving valve are solved through double-plunger cooperative driving and elastic buffering design, and a first plunger and a second plunger which are coaxially connected in a sleeved mode are arranged in a valve body; the second plunger is driven by a pre-compressed second elastic piece to achieve opening, closing and limiting of a medium input valve port, the first plunger is pulled by an SMA wire, the limit displacement of the first plunger comprises redundant displacement # imgabs0 #, the first elastic piece completely absorbs the residual shrinkage amount of the wire, and it is ensured that the strain of the wire is smaller than a safety threshold value. Through innovative mechanical structure design and material-mechanics collaborative optimization, the problems of overload failure, sealing delay and short service life of an SMA wire driving valve are solved, remarkable breakthrough is made in the aspects of miniaturization, high reliability and long service life, and a brand new technical path is provided for precise fluid control.

The invention belongs to the technical field of fluid control, and particularly relates to a system for predicting nuclear power plant valve opening and flow nonlinear sudden change. The preprocessing and mechanism analysis module is responsible for performing deep processing and consistency review on the data acquired by the sensor, and performing modeling and parameter correction on flow sections of different types of valves in combination with a physical mechanism; the data driving prediction module is responsible for performing XGBoost modeling and reasoning on historical and real-time collected multi-dimensional data on the basis of a physical mechanism analysis result, outputting a fine prediction value of the valve flow and providing a more sensitive response for a nonlinear abrupt change region; and the hybrid model fusion and adaptive updating module is responsible for organically fusing prediction results of the physical mechanism model and the XGBoost model, dynamically adjusting model parameters according to real-time operation data, and realizing high-precision prediction and stable control of the valve flow. According to the invention, real-time and high-precision prediction of non-linear abrupt changes possibly occurring in different opening degree intervals of the valve is realized.

The invention discloses an online monitoring system for tritium in water based on a PSF array, and relates to the field of nuclear energy. The on-line monitoring system for tritium in water comprises a fluid control system, a PSF detector module and an electronics system, the fluid control system automatically controls to open electromagnetic valves of a sample inlet and a sample outlet, and a peristaltic pump is started, so that a water sample to be detected is pumped into a detection chamber of the PSF detector module through the sample inlet; after the detection chamber is filled with the to-be-detected water sample, the electromagnetic valve and the peristaltic pump are automatically controlled to be closed; the PSF detector module captures precipitation energy generated by tritium decay beta particles in a water sample to be detected through a PSF array, converts the precipitation energy into photon signals, and converts the photon signals into electric signals through a detection window and a double photomultiplier; and the electronics system performs signal preprocessing on the received electric signal, and obtains corresponding tritium content monitoring data to be detected based on the preprocessed electric signal. The on-line monitoring system for tritium in water can ensure that the finally obtained measurement result is more accurate.

A system for operating a magnetorherological (MR) fluid actuator unit between bodies mau have at least one MR fluid actuator unit including a motor assembly, the motor assembly operating within a first frequency range, and a MR fluid clutch apparatus connected to the motor assembly to apply a variable amount of force from the motor assembly between at least two of the bodies, the MR fluid clutch apparatus operating within a second frequency range, the second frequency range being higher than the first frequency range. At least one sensor provides data indicative of a state of at least one of the bodies. The system may be used for: receiving the data from the at least one sensor: determining from the data that the motor assembly has to accelerate or decelerate to control an amplitude and direction of a relative speed between input and output of the MR fluid clutch apparatus to transmit a desired force between the bodies: controlling the motor assembly to accelerate or decelerate toward the given value at the first frequency range, and concurrently reducing a torque transmission from the MR fluid clutch apparatus during a lag period in which the torque transmission acts opposite to the desired force.

The invention discloses an excrement liquid dynamic proportion regulation and control method based on sensing feedback, and particularly relates to the technical field of waste fluid control, and the method comprises the following steps: arranging a plurality of sensors in an excrement liquid conveying pipeline, collecting multi-parameter data such as flow, conductivity, solid content and the like, calculating a load fluctuation entropy value and a control conflict count value, and calculating a load fluctuation entropy value and a control conflict count value; the current control state is judged, the priority and the execution frequency of proportional integral differential control and self-adaptive control are dynamically adjusted based on the state result, a dilution ratio control signal is generated, a variable frequency pump is driven to be linked with an electric valve, clear water injection and excrement liquid mixing control are achieved, and the solid content is stabilized within the target range; according to the invention, the system state is identified through the combination of entropy and conflict counting, the priority and frequency of the control strategy are dynamically switched, and accurate adjustment under steady state and disturbance is realized; and meanwhile, a dilution ratio control signal is linked with the variable frequency pump and the electric valve, a closed-loop dilution control channel is constructed, and the intelligence and stability of solid content regulation and control are improved.

The present invention provides a fluid control valve, comprising: a valve body having an inner chamber, a fluid inlet provided at one axial end of the valve body, a sidewall of the valve body having a return port and a regulating port connected to the inner chamber, the return port being adjacent to the fluid inlet and the regulating port being distal to the fluid inlet; a valve stem slidably disposed within the valve body, the valve stem including a first end and a second end opposite to each other, the first end being adjacent to the fluid inlet, the valve stem being provided with a first convex ring and a second convex ring in sequence from the first end to the second end, the valve stem having a cavity extending axially along the valve stem, the valve stem having a through hole connected to the cavity between the second convex ring and the second end; a spring; and a driver. The fluid control valve provided by the present invention has the fluid inlet disposed at the axial end of the valve body, and the regulating port and the return port disposed at the side of the valve body. This configuration of the fluid control valve can be applied to an engine block. When applied to an engine block, the oil circuit structure can be simplified and the overall structure of the engine block can be made more compact.

The invention discloses a remote valve closing and locking mistaken opening prevention system based on an intelligent safety AI valve, and relates to the technical field of fluid control valves. The system comprises an intelligent sensing layer, a local decision-making layer and a cloud collaboration layer; the method comprises the following steps: constructing an AI valve network virtual model, integrating multiple groups of sensor data to obtain multi-modal data, acquiring an AI valve evaluation value in real time by utilizing a local decision-making layer, determining whether to generate a valve closing locking request according to the AI valve evaluation value, and constructing a three-channel parallel data transmission architecture. The cloud collaboration layer carries out fluid simulation and generates a visual display result when receiving the valve closing locking request, and an operator decides whether valve closing locking is carried out or not and carries out upstream and downstream linkage control; the valve closing error rate is reduced through multi-modal data fusion and AI valve network virtual model simulation, communication reliability is guaranteed through three data transmission channels, and accurate valve closing locking and accident range control are achieved through dynamic threshold adjustment.