1807results about "Valve arrangements" patented technology

A valve timing control device includes: a unit for calculating a target valve timing for one of an intake valve and an exhaust valve in accordance with an operational state; a unit for detecting an actual valve timing of one of the intake valve and the exhaust valve; an actual valve timing control unit for generating a controlled variable for the VVT based on a difference between the target valve timing and the actual valve timing; a unit for learning a learning value of the controlled variable required for maintenance of the actual valve timing based on an integral correction value; and a unit for detecting a malfunction in a VVT from an amount of a shift in the actual valve timing when learning is not completed yet, and for detecting a malfunction in the VVT from the difference when learning is already completed.

The invention discloses a fuel gas intelligent valve with point type laser methane sensors, and relates to the field of fuel gas intelligent valves, and the fuel gas intelligent valve comprises an equipment installation module which is used for installing three point type laser methane sensors and collecting interface methane concentration values; the data acquisition module is used for acquiring pipeline parameters and environment parameter data inside and outside the interface; the risk assessment module is used for calculating the methane concentration change rate according to the methane concentration value and assessing whether gas leakage exists at each interface; the fuel gas leakage positioning module is used for constructing a fuel gas leakage positioning model based on a neural network and acquiring the probability of the fuel gas leakage risk at each interface; the valve self-adjusting module is used for determining whether the gas leakage point is a leakage point or not according to the gas leakage risk probability; and the historical data analysis module is used for calculating the precision ratio, the recall rate and the F1-Score value by using the historical data and the field actual measurement result. The leakage risk of the gas pipeline is effectively diagnosed and positioned, and the opening degree of the valve is intelligently controlled.

The invention discloses a control method of an electric actuating mechanism. The electric actuating mechanism is used for driving a valve to be opened and closed. The control method comprises the steps that real-time operation state parameters of the electric actuating mechanism are collected; determining a parameter control target value of the electric actuating mechanism according to a preset control mode; extracting historical operation data of the electric actuating mechanism, and outputting a control signal on the basis of a set target value according to a preset adaptive algorithm in combination with the historical operation data and the current operation state parameter; and driving the electric actuating mechanism based on the control signal. According to the technical scheme, the control precision of the electric actuating mechanism on the valve can be effectively improved.

A method for detecting a safe state of a switchable valve of a hydraulic system of an actuator in a motor vehicle includes the at least one first switchable valve, which is actuated by being energized, a pump, and a controller which controls at least the first switchable valve and the pump. The pump delivers the fluid to a first load in a first rotational direction and to at least one second load in a second rotational direction.

The invention relates to the technical field of valve leakage detection, and particularly discloses an ultrahigh pressure gas valve leakage detection method and system. According to the method, a unified leakage feature vector is obtained through multi-source acquisition and processing; capturing a time sequence dependency relationship, and determining a micro leakage mode; carrying out abnormal peak detection to obtain a preliminary leakage probability; combining the initial leakage probability with real-time environmental parameters, and dynamically adjusting a judgment standard; comparing the unified leakage feature vectors through a judgment standard, fusing position coordinate triangulation positioning, judging whether micro crack leakage occurs or not, and obtaining leakage position estimation; the historical data sequence is fused, the micro crack development trend is predicted, and the early warning level is determined; and generating a corresponding response signal according to the early warning level, and outputting micro crack leakage early warning. Multi-source data fusion, dynamic threshold adjustment and position prediction can be carried out, the accuracy and robustness of micro crack leakage detection are remarkably improved, and efficient guarantee is provided for safe operation of a pipeline.

The invention discloses a valve state monitoring and safety interlocking method based on machine vision, and belongs to the technical field of industrial process control and safety. The method comprises the following steps: 1, calibrating a camera and establishing a model; step 2, image acquisition and preprocessing; step 3, key image feature extraction and state decision; fourthly, opening degree calculation and state judgment are carried out; 5, safety interlocking is triggered; and 6, feeding back data. The valve state monitoring and safety interlocking method is achieved through the valve state monitoring and safety interlocking system. According to the invention, the millimeter-level or even submillimeter-level displacement and angle real-time accurate measurement of the opening degree of the valve can be realized, the state monitoring of the valve is realized, and the stability and reliability in the production process are improved; state judgment is carried out by comparing the real-time opening value with the instruction opening from the control system, a safety interlocking signal is generated and transmitted to the safety interlocking system, and finally physical safety action is triggered, so that a set of complete safety protection system is realized, and accidents are avoided.

The invention relates to a valve health degree monitoring and maintaining method and system based on an electric actuator, and belongs to the technical field of mechanical control and automation. The method comprises the steps that valve maintenance data of the electric actuator are obtained, a position-pressure bimodal grid is constructed based on the valve maintenance data, pressure testing is conducted on a valve, torque-opening curves in the opening and closing processes are analyzed, and valve health degree data are obtained; an electric execution monitoring model is constructed, a valve torque curve is obtained, maintenance information labels are added to grid nodes according to the valve maintenance information through a labeling binding method, and a valve health maintenance scheme is generated; for the pressure test, identifying switching time delay, hysteresis and leakage data in a valve torque profile and an operation log through a curve feature extraction method to obtain a valve scheme optimization strategy; and executing the maintenance scheme optimized by the valve scheme optimization strategy, and automatically outputting the updated valve health maintenance scheme based on a recursive execution feedback method.

The invention discloses an intelligent regulation and control method and system for a regulating valve, and the method comprises the following steps: obtaining the current operation condition data of the regulating valve, including fluid parameters and valve execution states; establishing a multi-physics field coupling model according to the operation condition data; dynamically correcting the multi-physics field coupling model by using an acoustic signal acquired by an acoustic sensor; a control instruction of the opening degree of the valve element is generated according to the corrected multi-physics field coupling model, and an actuator is driven to adjust the position of the valve element; in the valve element adjusting process, operation condition data and acoustic signals are collected in real time, and closed-loop feedback based on the condition-model-acoustic signals is formed; and when the acoustic characteristics in the acoustic signals exceed a preset threshold value, a slow opening and slow closing or segmented opening control strategy is triggered. According to the method, prediction errors can be remarkably reduced, the accuracy and reliability of a valve element opening degree control instruction are improved, and therefore the safety and stability of system operation are improved.

The invention relates to the technical field of hydraulic valves, and discloses a digital hydraulic valve intelligent diagnosis system which comprises a data acquisition module, a data preprocessing and label generation module, a feature fusion module, a classification diagnosis and decision fusion module and a service life prediction and suggestion generation module. Data such as pressure, vibration, displacement, flow and pollution degree of the valve are comprehensively captured through deployment of a multi-source sensor array at key positions of the digital hydraulic valve and a self-adaptive acquisition strategy, early fault feature omission is avoided, then through preprocessing means such as soft-hard hybrid wavelet threshold denoising and multi-sensor time alignment, the data precision is effectively improved, and the accuracy of the data is improved. Then, through dynamic-static layered feature fusion and an attention weighting mechanism based on GRU, different feature advantages under steady-state and fault working conditions are fully combined, the fault feature distinction degree is greatly enhanced, and the problem that similar faults are likely to be confused is solved.

The present disclosure provides systems and methods for monitoring for a stuck valve. Various temperature and pressure sensors are used to monitor for a stuck valve in one or more tanks of hydrogen gas.

Systems and methods include a sensor device for detecting passing valves. The sensor device includes a housing including a first side configured to contact a wall of a pipe in a pipe system. A cover plate is coupled to a second side of the housing opposite the first side. A piezoelectric sensor is disposed in the housing and configured to detect acoustic emissions from a valve in the pipe system. A sensor holder is disposed within the housing to maintain a position of the piezoelectric sensor. A spring is positioned around a portion of the sensor holder and configured to bias the sensor holder away from the cover plate and toward the first side of the housing. A computer system is mounted to the housing and configured to determine that a valve is a passing valve based on acoustic emissions detected by the piezoelectric sensor.

A rocker arm system for an internal combustion engine valvetrain includes a base member, a first rocker arm, a second rocker arm, and a saddle. The base member includes a first tower having a first tower recess, a second tower having a plurality of saddle mounting holes, a third tower having a third tower recess, a first rocker gap between the first tower and the second tower, and a second rocker gap between the second tower and the third tower. Each rocker arm includes an arm with a shaft extending through a shaft hole in the arm. A first tower recess central axis and a third tower recess central axis form a first angle having a measurement in a range of between 0° and 25°. The saddle is configured to connect to the second tower by passing a plurality of fasteners through plurality of corresponding saddle through holes in the saddle and into a plurality of corresponding saddle mounting holes in the second tower.

Embodiments of the present disclosure relate to an apparatus, a system, and a method for detecting and indicating the position of an actuator of wellsite equipment. The apparatus comprises a housing, the housing comprising a first housing portion operatively coupleable to the actuator and a second housing portion configured to receive at least one sensor therewithin. The at least one sensor provides an output signal indicative of the position of the actuator. The position of the actuator is indicative of a valve position.

The invention relates to the technical field of electric valves, in particular to an electric valve abnormal working condition monitoring method and system. Comprising the steps of setting a plurality of monitoring points based on equipment parameters of the electric valve; operation deviation values of all the monitoring points are generated according to a preset state evaluation model, and a first-level diagnosis strategy is set according to all the operation deviation values; generating an abnormal risk value according to the primary diagnosis strategy, and judging whether an early warning instruction is generated or not according to the abnormal risk value; a plurality of monitoring points are established based on the equipment parameters and the historical fault parameters of the electrically operated valve, and the abnormal operation state of each monitoring point is analyzed and pre-warned in time by setting the diagnosis sub-model of each monitoring point, so that the pre-warning efficiency of the abnormal working condition of the electrically operated valve is improved, the fault hidden danger is eliminated in time, and the safe operation of the electrically operated valve is ensured.

An inflation control system for an inflatable may comprise a compressed fluid source, a valve module, a temperature sensor, and a controller. The valve module is connected to the compressed fluid source and configured to control a flow of gas to the inflatable. The temperature sensor measures an ambient temperature and outputs the ambient temperature measurement. The controller is operably coupled to the valve module and configured to receive the ambient temperature measurement and determine an open-valve time based on the ambient temperature measurement, the open-valve time being a duration of time the valve module is in an open position.

The utility model provides an overhead digital display wash basin faucet which comprises a main body, a water outlet support arm is arranged at the upper end of the main body, a water outlet nozzle is arranged at the tail end of the water outlet support arm, a concave containing cavity is formed in the upper end of the main body, and a water outlet channel is formed in the center of the bottom of the containing cavity. The water outlet support arm is formed by stamping and welding a thin-wall pipe or a metal plate and is welded and fixed with the main body, an opening is formed in the upper end face of the water outlet support arm, and a mounting cylinder extending towards the accommodating cavity is arranged in the opening; the hydroelectric generator and the temperature adjusting device are mounted in the mounting cylinder. The utility model has the advantages of simple structure, light weight, low production cost and attractive integral appearance.

The invention discloses a marine storage tank emergency cut-off valve intelligent fault prediction method based on edge calculation, and relates to the technical field of industrial equipment intelligent operation and maintenance. Comprising the following steps: S1, determining a feature vector: synchronously acquiring multi-modal data through a multi-source sensor array, and performing signal processing on the multi-modal data to obtain a corresponding feature vector; s2, constructing a diagnosis model: constructing a sample data set according to the feature vector, and constructing a hybrid diagnosis model according to the sample data set; and S3: model processing: taking the multi-modal data as the input of a final CNN-LSTM hybrid network model, outputting to obtain a corresponding confidence coefficient, and determining a corresponding early warning mechanism according to the confidence coefficient. According to the method, the false alarm rate and the missing report rate can be reduced, and early-stage accurate recognition of potential faults such as abrasion and jamming is achieved.

The invention relates to a rocker arm assembly with roller deactivation. More specifically, a variable valve lift rocker arm assembly may include an outer rocker arm body having a valve end and a cam end and configured to rotate about a first shaft. The inner rocker arm body may be configured to rotate about a first shaft or a second shaft and selectively and operably locked to the outer rocker arm body via a latch assembly. The latch assembly may have a first latch pin actuated by a latch pin spring, a second latch pin, and a third latch pin driven hydraulically, mechanically or pneumatically. The latch assembly may have a locked mode in which relative movement between the inner rocker arm body and the outer rocker arm body is locked, and an unlocked mode in which relative movement between the inner rocker arm body and the outer rocker arm body is permitted.

The invention relates to the field of vehicle control, in particular to an intelligent oil-saving sliding control method and system for an AMT commercial vehicle and the commercial vehicle, and the method comprises the steps: obtaining a gradient threshold interval and hysteresis width corresponding to a current state based on the total load of the vehicle, the real-time vehicle speed and the real-time road gradient; whether the engine water temperature and the accelerator opening degree signal meet preset fuel-saving sliding admission conditions or not is judged in real time; when all the access conditions are met and the real-time gradient and the vehicle speed are within the threshold interval, gear combination of the AMT gearbox is maintained, an engine is controlled to enter a fuel cut-off mode, and the vehicle enters an intelligent fuel-saving sliding state based on engine reverse towing; and if the real-time gradient exceeds the safety range, engine fuel oil supply is immediately recovered, and the in-cylinder braking or exhaust braking function of the engine can be cooperatively activated, so that the fuel-saving sliding state is stably quitted. And on the premise of ensuring compliance and safety of the whole process, the fuel economy is effectively improved.

The invention provides a hydropower station governor main distributing valve fault diagnosis early warning system and method, and relates to the technical field of hydropower station governor main distributing valve fault diagnosis. The hydropower station governor main distributing valve fault diagnosis and early warning system comprises a governor main distributing valve and a fault diagnosis and early warning system, a plurality of sensors are arranged on the governor main distributing valve and used for monitoring various operation parameters, pressure, temperature and displacement of the main distributing valve in real time, and the early warning system is connected with the sensors and used for monitoring the operation parameters, pressure, temperature and displacement of the governor main distributing valve. The fault diagnosis and early warning system can analyze collected data in real time and comprises a multi-mode sensor array, an edge computing unit and a digital twin platform. Through collaborative design of multi-modal fusion anti-interference, edge calculation real-time response and meta-learning small sample adaptation, core pain points of a traditional method in the aspects of data dependence, real-time performance and false alarm rate are solved, and a high-reliability and high-precision intelligent operation and maintenance solution is provided for a hydropower station speed regulation system.

The invention relates to the technical field of valve positioners, in particular to an intelligent valve positioner which comprises a positioner body, an external pipeline and an air pipe and further comprises an anti-disengaging assembly, and the anti-disengaging assembly comprises a fixing frame, a moving block, an extension spring, a moving frame, a connecting block, an abutting frame, a limiting component and a locking component. The air pipe can be in butt joint in the external pipeline more stably by abutting, clamping and fixing the air pipe through the abutting frame and cooperating with rebounding and dragging of the extension spring, and then the situation that the air pipe connected to the positioner body is loosened or disengaged from the external pipeline due to vibration generated during equipment operation is avoided.

An intelligent valve self-adaptive sealing method based on working condition perception belongs to the technical field of industrial process control and fluid transportation, and comprises the following steps: step 1, multi-dimensional working condition perception and data preprocessing; 2, modeling based on a sealing requirement of a physical model and data driving; 3, optimizing a sealing force set point based on an intelligent decision-making strategy; fourthly, closed-loop control and execution are carried out; and 5, carrying out sealing state health diagnosis and early warning. According to the intelligent valve self-adaptive sealing method achieved through the intelligent valve self-adaptive sealing system, a working condition sensing and preprocessing module, a sealing requirement calculation module, a sealing setting optimization module, an intelligent control and precision execution module and a state diagnosis and early warning module are included. According to the method, the sealing force set point can be adjusted in advance according to the predicted working condition change, and dynamic and real-time self-adaptive setting, prediction and closed-loop optimization of the valve sealing force are achieved; and meanwhile, real-time transparency and diagnosis early warning of the sealing state of the valve are achieved.

The invention discloses a real-time leakage monitoring system for a high-pressure-resistant plastic butterfly valve. The real-time leakage monitoring system comprises an acquisition module, a physical analysis module, a fusion module and an early warning module, wherein the physical analysis module is used for carrying out a leakage test on the high-pressure-resistant plastic butterfly valve through physical and mechanical analysis; and the fusion module is used for performing deviation calculation on the static health benchmark, the dynamic health benchmark, the strain health benchmark, the quiet benchmark and the health torque benchmark, and obtaining specific performance characteristics in each leakage state through a linear equation set and double-cosine finite integral transformation. Aiming at the material characteristics of the high-pressure-resistant plastic butterfly valve, a multi-dimensional and refined health reference system is constructed; an advanced mathematical model based on multi-sensor data fusion, a linear equation set and double-cosine finite integral transformation is introduced, and accurate recognition, quantification and physical characteristic representation of the leakage state are achieved; and the sealing performance can be evaluated under a non-fluid working condition, so that a comprehensive and intelligent real-time leakage monitoring scheme is provided.

Provided is a downhole device, a well system, and a method. The downhole device, in one aspect, includes an electromagnetic assembly, as well as a magnetic target positioned proximate the electromagnetic assembly, wherein one of the magnetic target or the electromagnetic assembly is coupled with a movable feature of the downhole device, the movable feature configured to move to physically couple or physically decouple the electromagnetic assembly and the magnetic target. The downhole device, according to this aspect, further includes a sensor electrically coupled to the electromagnetic assembly, the sensor configured to sense for a change in a DC power parameter powering the electromagnetic assembly as the electromagnetic assembly and magnetic target physically couple to or physically decouple from one another, the sensed change representative of a change of impedance within a coil of the electromagnetic assembly and employable to estimate the status or health of the downhole device.

The present invention discloses a valve assembly comprising a seat ring, a valve plate assembly movable between a sealed position within the seat ring and an open position outside the seat ring. A fitting can pass through the valve plate, and / or a sensor assembly can extend through the fitting with a sensor mounted below the valve plate assembly. The sensor assembly provides enhanced monitoring capabilities by being positioned in the incompressible fluid column below the valve plate assembly, ensuring accurate sensing of relevant parameters. This configuration allows for efficient and reliable operation of the valve assembly, enhancing its performance and functionality in various applications.

The invention discloses an engine hydraulic variable valve mechanism, an engine and a method, and solves the problem that in the prior art, a piston and a tappet do not move synchronously, so that the valve closing angle is greatly changed along with the change of the rotating speed when a valve mechanism is partially opened. The hydraulic variable valve mechanism of the engine has the beneficial effect that the closing angle of the valve cannot be advanced along with the change of the rotating angle of the crankshaft at different rotating speeds, according to the specific scheme, an oil drainage hole is formed in the side, close to a piston, of a shell, the piston blocks the oil drainage hole, and the oil drainage hole can be communicated with a piston cavity in the moving process of the piston in the piston cavity; a slide valve is arranged at the oil drainage hole, is arranged between the tappet and the piston through the shell and can be communicated or disconnected with the low-pressure cavity, the control oil way is provided with a power-off normally-closed electromagnetic valve, the power-off normally-closed electromagnetic valve controls the slide valve, when the power-off normally-closed electromagnetic valve is powered off, the slide valve cuts off the high-pressure cavity and the low-pressure cavity, and when the power-off normally-closed electromagnetic valve is powered on, the high-pressure cavity is communicated with the low-pressure cavity. And the air valve is in a partial opening state.

The invention provides an intake valve late closing device, an intake valve assembly and an engine, and belongs to the technical field of engines, and the intake valve late closing device comprises a cam shaft, a rocker arm shaft, an intake rocker arm, a main roller, a control unit, a movable unit, a contact part and a return spring. The device has the beneficial effects that an air inlet valve late-closing rocker arm in the prior art is omitted, the movable unit is movably connected with the air inlet rocker arm, when the electromagnetic valve is closed, the air inlet cam makes contact with the main roller, and the air inlet valve late-closing roller makes contact with the air inlet late-closing cam but only compresses the return spring; when the electromagnetic valve is opened, engine oil pressure pushes the movable block to move to the position away from the air inlet rocker arm, the air inlet late-closing cam and the air inlet valve late-closing roller are still in contact but do not compress the return spring any more, the air inlet cam and the main roller are separated, a pause gap is formed, and therefore the air inlet late-closing cam does not work any more.

The invention relates to the technical field of machine learning, and particularly discloses a remote intelligent control method for a gas pipeline multi-branch safety valve based on an AI model, and the method comprises the following steps: obtaining original flow data and pipeline inner wall image data of a plurality of branches of a gas pipeline; inputting the original flow data and the pipeline inner wall image data into a pre-trained flow correction model to obtain corrected flow data of each branch; based on the corrected flow data, a control instruction of each branch safety valve is calculated through a control algorithm, and the control instruction comprises the specific adjustment amount of the opening degree of the safety valve; and sending the control instruction to a safety valve execution device of a corresponding branch through a communication network. The negative influence of the corrosion form on the stability of the flow field is effectively eliminated, precise control over gas conveying under the non-uniform flow field condition is achieved, and the safety of a gas pipeline system and the gas supply stability are guaranteed.

A flow control valve, a method and a well system. The flow control valve, in one aspect, includes a sliding sleeve disposed in a central bore of a housing, the sliding sleeve configured to move between a first state covering one or more flow trim ports and engaging a housing seal and second state disengaging from the housing and exposing at least a portion of the one or more flow trim ports. In accordance with one aspect, the flow control valve further includes a position sensor coupled with the sliding sleeve, the position sensor configured to determine a change in a resistance value as the sliding sleeve moves between the first state and the second state, the change in resistance value indicative of a position of the sliding sleeve in relation to the first state and the second state.