Patents
Literature
1773results about "Machine valve testing" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Intelligent test system and method for full life cycle of valve actuator
The invention provides a valve actuator full life cycle intelligent test system and method. The system comprises a combined load generation module used for generating an initial dynamic proportion of axial thrust and radial disturbance force according to a test protocol instruction, simulating a comprehensive stress state of an actuator under the impact of a pipeline medium, and outputting mechanical data containing thrust fluctuation characteristics in real time; the environment coupling module is used for dynamically adjusting an environment stress condition according to the test protocol instruction; the digital twinborn analysis module is used for comparing the actual displacement track of the actuator with the theoretical model track through a space-time alignment algorithm according to the mechanical data and environmental stress conditions to obtain a deviation feature vector; and the intelligent diagnosis module is used for carrying out dynamic time warping matching on the basis of the deviation feature vector and a preset historical fault database, outputting a fault type identification code and confidence, and generating a test report. According to the scheme, the accuracy of accurate evaluation of the full life cycle state of the valve actuator is improved.
Owner:TIANJIN BAILI ERTONG MACHINERY
Fluid valve actuator monitoring and diagnosing system based on AI intelligence
The invention relates to the technical field of fluid valve actuator equipment diagnosis, in particular to a fluid valve actuator monitoring and diagnosing system based on AI intelligence. According to the method, the target opening control instruction is generated through fluid medium characteristic data matching, and accurate regulation and control of the fluid valve are achieved; an opening degree change data set and a torque time sequence data set are captured in real time through a deployed sensor group, multi-dimensional dynamic fluctuation analysis is carried out, and intelligent recognition and screening of fluid valve abnormity are achieved; the medium temperature, the pipeline pressure and the medium flow velocity in the dynamic working condition parameters are substituted into a multiple regression linear model to generate reference torque and opening, and dynamic diagnosis of clamping stagnation abnormity is achieved by combining fusion calculation of a torque fluctuation coefficient and an opening deviation coefficient; through the correlation between the opening degree and the torque time sequence data and the traceability analysis of the current dynamic working condition parameters, the accurate positioning of the abnormal source is realized, and a systematic solution is provided for the state diagnosis and reliability evaluation of the fluid valve actuator.
Owner:WENZHOU HELI AUTOMATION INSTR CO LTD
Valve vibration impact test method and system based on digital twinning
The invention discloses a valve vibration impact test method and system based on digital twinning, and belongs to the technical field of industrial equipment test and evaluation. The method comprises the following steps: firstly, deploying a multi-source sensor network, constructing a physical entity layer of a valve vibration impact test, collecting and preprocessing various physical monitoring data, and constructing a digital twinborn body layer; secondly, real-time data assimilation with a physical test bed is realized through parameter calibration and updating of a digital twinborn model based on various physical monitoring data and the digital twinborn layer; and finally, executing a virtual vibration impact test, realizing prediction and evaluation of global response and key part information of the physical entity according to a test result, and finally realizing interaction and performance prediction. And the valve vibration impact test is realized through the valve vibration impact test system. According to the method, the fault diagnosis capability, the early damage identification capability and the valve state prediction and evaluation capability can be remarkably improved, and the defect of insufficient field monitoring information is overcome.
Owner:DALIAN UNIV OF TECH
Method and system for predicting service life of fire valve
The invention discloses a method and system for predicting the service life of a fire valve, and relates to the field of prediction maintenance, and the method comprises the steps: obtaining a multi-dimensional monitoring data matrix which comprises the sealing performance data, operation torque data and corrosion degree data of the fire valve continuously monitored in a preset time period; determining a parameter incidence matrix according to the multi-dimensional monitoring data matrix; determining a plurality of principal component vectors and corresponding characteristic values according to the parameter incidence matrix through a principal component analysis algorithm, and determining a current health state score of the fire valve according to the characteristic values corresponding to the plurality of principal component vectors; determining a degradation law function of the fire-fighting valve according to the historical operation record of the fire-fighting valve; and predicting the service life of the fire valve according to the current health state score and the degradation law function. According to the scheme, the accuracy of life prediction of the fire valve is improved, and the problem that the accuracy of life prediction of the fire valve is low is solved.
Owner:SHANDONG ANDY FIRE TECH CO LTD
Homogenizing valve wear degree monitoring and service life prediction method and high-pressure homogenizer
ActiveCN120404121AData processing applicationsTransportation and packagingProcess engineeringMachine
The invention relates to a homogenizing valve wear degree monitoring and service life prediction method and a high-pressure homogenizer, based on a pneumatic homogenizing structure, the pneumatic homogenizing structure comprises a homogenizing cavity, a homogenizing valve arranged in the homogenizing cavity, and a cylinder for applying pressure to a valve core of the homogenizing valve through a push rod. The homogenizing pressure and the homogenizing air pressure are monitored and calculated in real time, and the wear degree of the homogenizing valve can be dynamically tracked and evaluated without shutdown and disassembly inspection, so that the labor cost is reduced, the efficiency is improved, and the wear degree of the homogenizing valve can be accurately controlled; and the residual life of the homogenizing valve is predicted in real time through analysis and calculation of the wear degree and the homogenizing efficiency of the homogenizing valve, so that personnel can replace the homogenizing valve in time according to an actual production process, sudden failures are avoided, the product quality is improved, and cost waste is avoided.
Owner:SUZHOU AITSEN PHARM EQUIP CO LTD
Valve fault diagnosis method and system based on machine learning model and mechanism model
The invention relates to a valve fault diagnosis method and system based on a machine learning model and a mechanism model. The method comprises the steps that working condition classification marking is conducted on operation data of a valve through an ARX model; when the operation data under the same working condition is single-loop operation data, flow prediction is carried out in a machine learning model, deviation calculation is carried out on a generated flow prediction value and an actual flow value, and a flow deviation value under the current working condition is obtained; when the operation data under the same working condition is multi-loop operation data, analyzing the flow characteristics of the operation data by using the mechanism model, and performing deviation calculation on the obtained flow characteristic value and the flow characteristic reference value to obtain a flow characteristic deviation value under the current working condition; all the flow deviation values or the flow characteristic deviation values are traversed to be compared with a deviation value threshold value, and the fault type of the valve is determined according to a comparison result. According to the method, the accuracy, the real-time performance and the universality of valve fault detection in the process industry are improved.
Owner:SUPCON TECH CO LTD
Response time testing method and system of electro-hydraulic proportional valve
The invention relates to the technical field of response time testing of electro-hydraulic proportional valves, and discloses a response time testing method and system of an electro-hydraulic proportional valve, and the method comprises the steps: collecting multi-point pressure, step response, pipeline length and medium parameters, and unifying the time reference to obtain an original pressure sequence; constructing an inverse filter spectrum to remove damping interference so as to recover a sharp peak value; lagging offset is calculated according to pipeline and medium parameters, time delay compensation is carried out, and an alignment sequence is obtained; intercepting a non-stationary segment to eliminate residual delay deviation; constructing a response dynamic data set, extracting harmonic frequency domain representation, and reconstructing a pressure sequence through inverse transformation and superposition of compensation factors; and calculating a deviation integral quantity, adjusting a dynamic compensation parameter, performing weighted correction, and outputting an optimized reconstruction response sequence. According to the method, accurate reconstruction of the real pressure response of the proportional valve can be realized, so that the accuracy and the reliability of response time testing are improved.
Owner:SUZHOU MOLI AUTOMATIC CONTROL TECH
Online performance testing method for breather valve for oil and gas storage and transportation
The invention relates to the technical field of sealing performance testing, in particular to a breather valve performance online testing method for oil and gas storage and transportation, which comprises the following steps: acquiring a vibration signal of a breather valve body, a multi-band acoustic signal of a valve port and a total pressure signal in a storage tank; performing multi-scale complex wavelet decomposition, and constructing a time frequency-energy correlation feature tensor; the total pressure signal and the time frequency-energy correlation characteristic tensor serve as a combined observation value and are input into a preset continuous Gaussian mixture hidden Markov model containing four hidden states of sealing, transient micro-leakage, continuous leakage and full-amount opening, and the posterior probability is calculated; and calculating to obtain a real-time leakage rate. According to the method, the opening pressure can be accurately determined, the real-time leakage rate can be quantitatively calculated after the leakage state is recognized, comprehensive and accurate quantitative online evaluation of core performance parameters of the breather valve is achieved, and the multi-source information fusion degree and the anti-interference capacity are improved.
Owner:TAICANG YANGHONG PETROCHEMICAL CO LTD
Air tightness detection device for pressure balance type plug valve
ActiveCN121275240ADetection of fluid at leakage pointMachine valve testingAxial displacementPressure balance
The invention provides an air tightness detection device of a pressure balance type plug valve, and relates to the technical field of valve air tightness detection. An air tightness detection device of a pressure balance type plug valve comprises a water pool, an adjusting mechanism, two clamping mechanisms and an end sealing mechanism, the end sealing mechanism comprises two groups of positioning assemblies and two groups of sealing assemblies, and the positioning assemblies and the sealing assemblies are communicated and used for enabling the sealing assemblies to generate axial displacement. The sealing assembly is coaxially arranged in multiple layers, the structures of all the layers of the sealing assembly are the same, the sealing assembly is used for being inserted into an inlet and an outlet of a plug valve to be detected, and by means of the multi-layer design of the sealing assembly and the design that the positioning assembly enables each layer of the sealing assembly to generate independent axial displacement, the plug valve to be detected can be detected. The sealing assembly is adapted to plug valves to be detected with different calibers; the sealing assembly has the action of expansion under the action of air source pressure, so that the part inserted into the plug valve to be detected is in sealed connection with the plug valve, and the sealing performance is ensured.
Owner:JIANGSU MINGTONG FULU FLUID CONTROL EQUIP CO LTD
Check valve combined hydrogen storage system durability test bench and test method
The invention relates to the technical field of hydrogen storage system testing, and discloses a one-way valve combined hydrogen storage system durability test bench and a test method. A main control computer of the rack is used for configuring test task parameters, coordinating operation of subsystems and processing test data; the high-pressure hydrogen supply subsystem comprises a pressure-adjustable hydrogen source and a pressure closed-loop control module, and can apply accurate and controllable hydrogen pressure to the inlet end of the tested system according to test task parameters; the multi-channel valve state acquisition subsystem acquires the inlet and outlet pressure of the valve, the surface temperature of the valve body and vibration spectrum data in real time through pressure, temperature and vibration sensor arrays arranged at the valves, and transmits the data to the main control computer; the valve action driving subsystem comprises a high-speed electromagnetic actuator array and a displacement feedback module and can drive all valves to execute a preset opening degree sequence and opening and closing frequency. And the durability evaluation subsystem is embedded into the main control computer, calculates the accumulated damage degree of the valve and predicts the residual life cycle.
Owner:SHANGHAI QINGRAY NEW ENERGY TECHNOLOGY CO LTD
Valve pressure testing device and using method thereof
The invention relates to the technical field of valve pressure testing, in particular to a valve pressure testing device and a using method thereof.The valve pressure testing device comprises a detection water tank, a supporting frame is arranged on the detection water tank, a rotating support structure is rotationally arranged on the supporting frame, and an intermittent driving mechanism capable of driving the rotating support structure to intermittently rotate at all stations is arranged on the supporting frame; a plurality of clamping structures used for positioning and clamping the ball valve main body are arranged on the rotating support structure in the circumferential direction of the rotating support structure, and inflation and deflation pipeline structures used for inflating and deflating the ball valve main body are arranged between the clamping structures; the detection water tank, the rotary support structure, the intermittent driving mechanism, the clamping structure, the inflation and deflation pipeline structure, the feeding slide way structure, the discharging slide way structure and the like cooperate and cooperate with one another to complete exhaust and inflation at the same time, gas recycling can be achieved, exhaust operation and time are saved, and full-process automatic testing can be achieved.
Owner:浙江超众阀门制造有限公司
Intelligent fault diagnosis method and system for electromagnetic valve test data and computer program product
The invention provides an intelligent fault diagnosis method and system for electromagnetic valve test data and a computer program product, and relates to the technical field of electromagnetic valve fault diagnos.The intelligent fault diagnosis method comprises the steps that firstly, multi-dimensional test data of an electromagnetic valve under multiple working condition combinations are collected, and multiple types of data including action response and the like are contained; a data behavior collaboration model is constructed based on the behavior collaboration relation between the data, and laws such as synchronous response are embodied; an abnormal collaboration chain deviating from a normal collaboration mode is mined from the model, and abnormal performance of each link is determined; reversely deducing a fault core cause through the abnormal collaborative chain, and determining information such as cause types; and finally, generating an executable instruction sequence based on the fault core inducement and the abnormal collaborative chain conduction characteristic, and controlling the maintenance system to execute fault handling operation. Therefore, faults can be comprehensively and accurately diagnosed, and the operation reliability and the system stability of the electromagnetic valve are improved.
Owner:PLIMER INTELLIGENT TECH (SHANGHAI) CO LTD
Safety valve full life cycle fault detection method and system
ActiveCN120927280ABatteries circuit arrangementsMachine valve testingFull life cycleData acquisition
The invention relates to the technical field of safety valve fault monitoring, in particular to a safety valve full-life-cycle fault detection method and system, and aims to solve the problems that sudden safety accidents occur frequently due to the fact that a traditional method depends on leakage flow monitoring and cannot capture hidden faults such as valve element jamming and spring fatigue, a power supply system mostly adopts a single power generation mode, and the power consumption is low. In a low discharge scene, the electric quantity of the energy storage module is used up, and monitoring interruption is caused. According to the invention, the problems of safety valve hidden fault monitoring deficiency and unstable power supply are effectively solved. By means of multi-dimensional data collection, spring elasticity attenuation and valve element movement abnormity can be found in advance, and faults are prevented from being evolved into serious leakage. The composite power supply system maintains basic monitoring in the non-discharge stage, energy is quickly supplemented in the discharge stage, and continuous operation of the whole life cycle is guaranteed. A model analysis result can guide maintenance personnel to accurately position a fault part, and unnecessary shutdown maintenance is reduced.
Owner:YUEQING WEILONG MINING EQUIP CO LTD
Ultrasonic detection method for leakage rate of fuel control valve of aero-engine
ActiveCN120651437ADetection of fluid at leakage pointGas-turbine engine testingVisual presentationDeep belief network
The invention relates to the technical field of ultrasonic detection, and provides an aero-engine fuel control valve leakage amount ultrasonic detection method, which forms a coherent technical link through leakage ultrasonic signal acquisition, leakage signal separation, leakage feature extraction, leakage area positioning, offset compensation and cross validation of a sensor, and the links are mutually verified and optimized. A leakage signal is separated through a dynamic threshold value, the identification degree of a deep belief network is enhanced through multi-dimensional features, environment interference is compensated and corrected through working condition parameters, positioning deviation caused by single-link error accumulation in a traditional method is effectively restrained, accurate capturing and positioning of a micro leakage signal are achieved, and the method is suitable for large-scale popularization and application. The leakage thermodynamic diagram integrates leakage rate grading, coarse positioning area and micro leakage point information, the analysis and decision-making time of maintenance personnel is greatly shortened through a visual presentation mode, and rapid interpretation of fault positions and severity is achieved.
Owner:SHANGHAI HANGSHU INTELLIGENT TECH CO LTD
Abnormality detection method and system for refrigeration valve
The invention relates to the technical field of data processing, in particular to an anomaly detection method and system for a refrigeration valve, and the method comprises the steps: obtaining the preprocessed operation data of the refrigeration valve, and for any data point in the operation data, calculating the sparse degree of the data point according to the distribution state of the data point in a local region; meanwhile, constructing a time sequence adjacent reference set of the data points, and obtaining an initial abnormal score of each data point in the adjacent reference set by using an LOF algorithm; constructing a trend anomaly degree according to the initial anomaly score of the data point in the time sequence adjacent reference set and the change of the data value; a preset initial abnormal threshold value is adjusted based on the trend abnormal degree and the sparse degree to obtain a dynamic threshold value, the dynamic threshold value is in negative correlation with the trend abnormal degree, and the operation data of the refrigeration valve are judged based on the dynamic threshold value. The method has the effect of improving the abnormality detection accuracy of the refrigeration valve.
Owner:SHANDONG DOFUN REFRIGERATION TECH CO LTD
Rapid jacking anti-static breather valve on-line detection tool
The invention discloses a quick jacking anti-static breather valve on-line detection tool, and relates to the technical field of valve body monitoring, the quick jacking anti-static breather valve on-line detection tool comprises a jacking unit, the jacking unit comprises a jacking frame, an upper plate arranged on the jacking frame, a jacking plate arranged on the jacking frame, and a jacking assembly arranged on the jacking frame and used for controlling the jacking plate; the switching unit comprises a switching assembly arranged between the upper plate and the jacking plate in a sliding mode, a bright plate arranged on the switching assembly and a dark plate arranged on the switching assembly; the valve body connecting unit comprises a valve body connecting pipe arranged on the upper plate; and the storage tank connecting unit comprises a storage tank connecting pipe arranged on the jacking plate. According to the quick jacking anti-static breather valve on-line detection tool, the breather valve detection tool which does not allow a bottom valve to appear between a breather valve and a storage tank and supports integrated on-line detection is designed according to regular inspection and evaluation requirements on the breather valve in the industry.
Owner:NANJING PRETIGE SAFETY EQUIP ENG CO LTD +1
Intelligent monitoring method and system for intelligent breather valve
ActiveCN120427251AVolume measurement apparatus/methodsMolecular entity identificationBreatherControl theory
The invention discloses an intelligent monitoring method and system for an intelligent breather valve, and relates to the technical field of intelligent valve monitoring. Fitting a circulation volume curve based on the uploaded tank body pressure and circulation volume in combination with data of valves with different calibers; the opening state of the valve is judged according to the logic relation between the state of the proximity switch and the pressure of the tank body; and calculating the discharge amount or the suction amount based on the opening state of the valve and the circulation volume curve. According to the method, on the basis of the relation between the tank pressure and the circulation volume, the circulation volume curve is fitted through the quartic equation, errors of a traditional linear model are avoided, and the applicability to valves with different calibers is guaranteed. The opening state of the valve is judged according to the proximity switch state and pressure relation, and the defect that a traditional system is inaccurate or delayed in judgment of the valve state is overcome. By calculating the emission amount and the suction amount and combining VOCS concentration monitoring, emission of harmful gas is effectively reduced, and the environmental protection requirement is met.
Owner:PRETIGER (NANJING) SAFETY EQUIP CO LTD
Valve detection system and detection method thereof
The invention provides a valve detection system and a detection method thereof. The valve detection system comprises a valve data module, an associated valve module, a first prediction module, an associated verification module and a second prediction module, the valve data module comprises associated features and fault types of valves in the system; the associated valve module can obtain an associated valve having fault propagation relevance with the to-be-detected valve according to the associated characteristics of the valve; the first prediction module can judge whether the valve has a fault risk or not according to the deviation between actual detection data and theoretical data of the valve; when the judgment result is yes, the association verification module can verify the judgment result of the first prediction module through the obtained detection data of the associated valve; and when the verification result is that the first prediction module is misjudged, the fault risk of the valve is judged again through the second prediction module. The detection accuracy is improved, and false alarms are reduced.
Owner:WENZHOU HANGYI MACHINERY TECHNOLOGY CO LTD
Flow valve position calibration method and system based on Hall matrix
The invention relates to a flow valve position calibration method and system based on a Hall matrix, and belongs to the field of flow valve control. The position calibration method comprises the steps that voltage signals output by a Hall sensor array in the movement process of a valve rod of the flow valve are collected in real time, an original voltage signal data set is generated, differential signal noise reduction processing is carried out, and a feature signal set is obtained; identifying slope abrupt change points based on the characteristic signal set, performing segmentation to obtain positive and negative slope curve segments, and performing translation splicing and filtering processing to generate a displacement characteristic curve; according to the preset mechanical stroke of the valve rod of the flow valve, polynomial fitting is conducted on the displacement characteristic curve, and a discretized calibration parameter table is generated; a valve rod of the flow valve is driven to execute full-stroke motion, and an actual voltage signal sequence is collected in real time; and comparing the actual voltage signal sequence with the theoretical voltage signal in the calibration parameter table point by point, and outputting a calibration completion state and error distribution data. The accuracy and reliability of position calibration of the valve rod of the flow valve can be improved.
Owner:SICHUAN ENGMART NEW ENERGY TECHNOLOGY CO LTD
Replacing and washing valve testing device
PendingCN120351218AFluid-pressure actuator testingMachine valve testingLiquid storage tankStructural engineering
The invention relates to the technical field of valve testing, and discloses a changing and washing valve testing device which comprises a testing table, a partition plate is fixedly connected to the bottom of the testing table, a conveying pump is fixedly connected to the right side of the partition plate, a sliding rail is fixedly connected to the top of the testing table, and two fixing clamps are slidably connected to the surface of the sliding rail. The two fixing clamps are both used for fixing a replacement and washing valve, sliding blocks are arranged on the opposite sides of the two fixing clamps, a conveying pipe is fixedly arranged at the output end of the conveying pump, a liquid storage tank is fixedly connected to the left side of the partition plate, and a backflow pipe is fixedly connected to the left side of the liquid storage tank. The two pressure regulating valves can be independently regulated, various actual working conditions and generated different pressure conditions can be simulated, the test requirements of various types of changing and washing valves can be met, the performance of the changing and washing valves under different conditions can be accurately evaluated, and the test environment is closer to the actual working scene, so that potential problems and defects can be found in time, the system fault risk is reduced, and the test efficiency is improved. And the product quality and reliability are improved.
Owner:SHANGHAI WENTE FLUID CONTROL VALVE CO LTD
Electromagnetic valve vibration fatigue test device and failure judgment method
InactiveCN120521819AMeasurement of fluid loss/gain rateMachine valve testingSolenoid valveStructural engineering
The invention discloses an electromagnetic valve vibration fatigue test device and a failure judgment method, and relates to the technical field of electromagnetic valve tests.The electromagnetic valve vibration fatigue test device comprises a test box, a conveying mechanism, a balance weight mechanism, a vibration table, an opening and closing detection mechanism and a clamping detection mechanism; the front end and the rear end of the top in the test box are fixedly connected with counterweight mechanisms, the bottom in the test box is fixedly connected with a vibration table, the right end in the test box is fixedly connected with an opening and closing detection mechanism, and the top of the vibration table is fixedly connected with a clamping detection mechanism and a conveying mechanism; the inlet and outlet pressure of the detected electromagnetic valve is detected through a sensor, failure judgment of the electromagnetic valve is achieved, then the pressure is adjusted through the combination mode of low-speed precise conveying of a piston cylinder and high-speed large-flow conveying of an external fluid conveying box, periodic fluid pressure fluctuation is applied while vibration is conducted, and the real load of the electromagnetic valve is simulated. And the superimposed effect of mechanical vibration and fluid impact is synchronously tested.
Owner:SHANGHAI HUALIWEI FLUID CONTROL CO LTD
Fault monitoring sealing ball valve
The invention discloses a fault monitoring sealing ball valve, belongs to the technical field of ball valves, and solves the problems that a self-adaptive compensation mechanism of an intelligent valve positioner can cover the degradation process of mechanical wear of a pneumatic sealing ball valve quietly during long-term operation, and finally sudden control instability is caused due to the fact that nonlinear wear exceeds a compensation limit. Comprising a valve body, a pneumatic actuator arranged on the valve body, a valve rod which is in transmission connection with an output shaft of the pneumatic actuator and located in the valve body, a valve ball fixedly connected with the valve rod and a fault prediction circuit. The fault prediction circuit comprises a multi-dimensional physical sensing array module, a high-speed synchronous acquisition and preprocessing module, a core signal processing and fusion analysis module, an artificial intelligence coprocessor module and a predictive maintenance decision and life cycle management module. Multi-dimensional signals are collected in real time, valve health is evaluated after fusion analysis, and early warning and maintenance decisions are output.
Owner:ZHEJIANG XUTENG VALVE CO LTD
Method and Apparatus for Testing Vent Caps
Owner:THE BOEING CO
Detection method and system for automatic drain valve
The invention provides a detection method and system for an automatic drain valve, and relates to the technical field of equipment testing. The method comprises the following steps: collecting working data of a drain valve to be detected; determining a flow peak change trend and a drainage efficiency attenuation degree based on flow data of continuous multiple drainage records, and generating an impurity deposition index; generating an impurity stripping index based on the instantaneous change rate of the flow velocity data and the variable quantity of the flow data, and determining a first impurity deposition degree in combination with an impurity deposition index; determining a vibration anomaly factor and an acoustic anomaly factor based on the vibration data and the acoustic data, and determining an impurity anomaly score in combination with the first impurity deposition degree; determining the working intensity based on the vibration data, the pressure data and the liquid level data, obtaining the drainage frequency of the drainage valve to be detected after last maintenance, and determining the fault probability based on the working intensity, the drainage frequency and the impurity anomaly score; and predicting the fault condition of the to-be-detected drain valve based on the fault probability. The fault detection accuracy is improved.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY
Diaphragm valve flow testing system and method
PendingCN121252909AMachine valve testingVolume/mass flow by differential pressureDiaphragm valveThermoscope
The invention discloses a diaphragm valve flow test system and method, and the system comprises a first test assembly and a second test assembly, and a first pressure measurement port of the first test assembly and a second pressure measurement port of the second test assembly are respectively communicated with a to-be-tested valve; a first test pipeline communicated with the first test assembly is provided with a circulation path in a first direction; a second testing pipeline communicated with the second testing assembly is provided with a circulation path in the first direction. The upstream and downstream pressure values of the to-be-tested valve can be accurately detected through the first pressure gauge and the second pressure gauge, and the gas flow value is detected through the flow meter and substituted into a calculation formula to obtain an accurate flow coefficient value; the upstream first testing assembly and the downstream pressure measuring device are arranged at a specific distance according to the pipe diameter of the communicating pipeline, and the accuracy of the pressure value can be effectively ensured through the limitation of the pipe diameter and the distance; the actual temperature value of the fluid in the test system pipeline is monitored through the thermometer, and the influence of the temperature on the test result is effectively reduced.
Owner:SHANGHAI JUKE FLUID CONTROL CO LTD
Pressure testing device and testing method for valve production
PendingCN120651519AMachine valve testingMaterial strength using tensile/compressive forcesVALVE PORTPhysics
Owner:TEL VALVE HIGH-TECH CO LTD
Valve pressure testing device
InactiveCN121231050AMachine valve testingMaterial strength using tensile/compressive forcesHydraulic cylinderThreaded rod
The invention relates to the field of valve pressure testing, and discloses a valve pressure testing device which comprises a rack, the outer wall of the rack is rotatably connected with a first hydraulic cylinder, the output end of the first hydraulic cylinder is rotatably connected with a first protective shell, and the inner bottom of the rack is fixedly connected with a second hydraulic cylinder. A supporting bottom plate is fixedly connected to the output end of the second hydraulic cylinder, a second protective shell is fixedly connected to the top of the supporting bottom plate, fixing plates are installed outside the first protective shell and the second protective shell, and clamping assemblies are installed on the opposite sides of the two fixing plates. Transmission assemblies are arranged on the sides, away from each other, of the two fixing plates. The first threaded rod rotates to drive the fixing ring and the elastic sealing ring to penetrate into the valve, compared with external sealing, the deep design enables the elastic sealing ring to make direct contact with the sealing face in the valve, and possible irregular structure or impurity interference outside the valve is avoided.
Owner:YANTAI WANTONG VALVE CO LTD
Analysis method for opening and closing rate of water delivery valve
PendingCN120102129AMachine valve testingFluid pressure measurementEnvironmental engineeringVALVE PORT
The invention relates to the field of ship locks, in particular to a method for analyzing the opening and closing rate of a water delivery valve, which comprises the following steps of: observing the elevation change of a typical measuring point at the initial opening stage of the valve, selecting the typical opening degree of the valve, monitoring the time-average pressure at the top and the bottom of a gallery after selection, and observing the distribution rule and amplitude difference of the time-average pressure and pulsating pressure; the water pressure is analyzed in combination with the working water head, then the change rule of the flowing water acting force and the opening degree is obtained by analyzing the door opening speed, the change rule is compared with the flowing water acting force, the influence of the door closing speed on the flowing water effect during door closing is analyzed, and therefore the good opening and closing time is obtained. According to the embodiment of the invention, the valve opening time of tv = 60s and the valve closing time of tu = 30s are recommended through comparison and analysis of a plurality of groups of tests and are both 2-3min lower than the current standard, so that the operation efficiency of the ship lock can be improved on the premise of meeting safety.
Owner:PINGLU CANAL GRP CO LTD +1
Valve fault self-checking method and system based on current detection and storage medium
The invention provides a valve fault self-checking method and system based on current detection and a storage medium, and the method comprises the steps: firstly, collecting the working current of a valve driving chip in real time through a non-contact current sensor, and reducing the interference of an external signal on a measurement signal through a non-intrusive design; secondly, analyzing the current curve, the current operation amplitude and the current instantaneous change rate to obtain real-time model matching data; then, dynamic characteristic model reference data is established based on historical current data in the valve state switching process, and the adaptability of an alarm threshold value and the valve working state is improved; and finally, comparing real-time model matching data with theoretical characteristic model reference data, analyzing and identifying abnormal conditions, and triggering graded early warning response or redundancy control operation according to the abnormal conditions. Wherein invalid warning is reduced and the equipment maintenance efficiency is improved by adopting a multi-stage early warning mechanism; in addition, the fault-tolerant rate of the working of the instrument / meter valve is improved through redundancy control operation.
Owner:HANGZHOU SUNRISE TECH +1
Regulation and control method, system, equipment and medium for relay valve advance test
PendingCN120489545AMachine valve testingApparatus for force/torque/work measurementRelay valveOptimal control
The invention provides a regulation and control method, system and device for a relay valve overrun test and a medium, and belongs to the technical field of air braking systems. The method comprises the steps that pressure response characteristics of a relay valve pipeline system under different opening degrees of a proportional pressure regulating valve are tested, a finite set representing pipeline dynamic response is constructed based on pressure data in a sampling period, and a dynamic matrix model is generated to describe the relation between future pressure output and control quantity; pipeline pressure output at the future moment is predicted based on the dynamic matrix model, an optimized target function is established in combination with the target boosting rate, and the optimal control quantity is solved to adjust the opening degree of the proportional pressure regulating valve in real time; comparing a predicted pressure value with an actual measurement value to obtain an error, dynamically correcting a predicted model parameter by using a weighted error sequence, and adjusting a subsequent control quantity to compensate system hysteresis and external interference; and circularly executing the processes until the pipeline pressure and the regulation and control time reach corresponding target values, and cutting off the gas source.
Owner:JINAN AUTOMOBILE CHECKING & MEASURING CENT +1