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CN-122014903-A - Corrosion-resistant self-compensating sealing stop valve

CN122014903ACN 122014903 ACN122014903 ACN 122014903ACN-122014903-A

Abstract

The invention discloses a corrosion-resistant self-compensating sealing stop valve, which relates to the technical field of valves and comprises a valve body, an elastic sealing seat, a valve core and a self-compensating sealing control assembly, wherein the control assembly comprises five modules, namely parameter acquisition, signal preprocessing, main control decision making, electric control execution and feedback verification. When the device works, multidimensional signals such as seal abrasion, medium characteristics and the like are collected, after anti-interference and standardization processing, a main control decision module calculates seal compensation quantity through an algorithm and corrects the seal compensation quantity by combining with corrosion working conditions, then an abnormal fault tolerance processing is carried out to generate a driving instruction, an electric control execution module adjusts seal clearance and pressure through an electric push rod and a miniature air pump, and a feedback check module feeds back in real time to form a closed loop. The valve realizes sealing self-adaptive compensation, has strong corrosion resistance and interference resistance, is sealed accurately and stably, can prolong the service life of core components, adapts to complex working conditions, and has strong practicability.

Inventors

  • Zu Hongfeng
  • LIU FANGFANG
  • ZOU CHENG
  • WANG JINGYI
  • ZHOU JUN
  • ZHANG YAYONG
  • SUN HAO

Assignees

  • 盐城市精工阀门有限公司

Dates

Publication Date
20260512
Application Date
20260310

Claims (10)

  1. 1. A corrosion-resistant self-compensating sealing stop valve is characterized in that, The self-compensating valve comprises a valve body (1), wherein an elastic sealing seat (3) is arranged on a valve seat hole of the valve body (1), a valve core (2) in sealing fit with the elastic sealing seat (3) is arranged at the bottom of a valve rod (4), and a self-compensating sealing control assembly (6) is arranged on the outer wall of the valve body (1), wherein the self-compensating sealing control assembly (6) comprises a parameter acquisition module, a signal preprocessing module, a main control decision module, an electric control execution module and a feedback verification module; the parameter acquisition module is used for acquiring a sealing abrasion state signal, a medium characteristic signal, a sealing leakage signal and an environment state signal of the elastic sealing seat (3) to generate original sensing data; the signal preprocessing module is used for carrying out anti-interference processing and digital conversion on the original sensing data to generate a standardized digital signal; The main control decision module is used for receiving the standardized digital signal, performing seal compensation quantity calculation through a built-in core algorithm unit, adjusting a calculation result by combining the adaptive parameters of the corrosion working condition correction unit, and generating an accurate compensation driving instruction through processing of the abnormal fault-tolerant unit; The electric control execution module is used for receiving the compensation driving instruction and adjusting the sealing compensation pressure of the elastic sealing seat (3) and the displacement distance of the valve core (2) through the driving device; And the feedback check module is used for collecting real-time continuous data signals of the electric control execution module, transmitting the real-time continuous data signals to the main control decision module, providing a basis for iterative optimization of the compensation driving instruction by the core algorithm unit, and forming closed-loop control.
  2. 2. A corrosion resistant self-compensating seal shut-off valve according to claim 1, wherein, The driving device comprises an electric push rod (5) and a miniature air pump, the electric push rod (5) is installed in the valve rod (4), the valve core (2) is fixedly arranged at the output end of the electric push rod (5), the miniature air pump is installed in the self-compensating sealing control assembly (6), and the miniature air pump is communicated with the inflation cavity of the elastic sealing seat (3) through an anti-corrosion hose.
  3. 3. A corrosion resistant self-compensating seal shut-off valve according to claim 1, wherein, The parameter acquisition module comprises a sensor layout unit, a wear sensing component, a medium sensing component, a leakage sensing component and an environment sensing component, wherein the sensor layout unit is used for fixedly arranging the wear sensing component, the medium sensing component, the leakage sensing component and the environment sensing component in the circumferential direction of a sealing surface of an elastic sealing seat (3), a medium circulation channel inside a valve body (1) and a corresponding area of the outer wall of the valve body (1) respectively; The seal abrasion sensing unit is used for monitoring a contact resistance change signal and a compression amount change signal of the sealing surface of the elastic sealing seat (3) through an abrasion sensing component distributed by the sensor distribution unit to form a seal abrasion related original signal; the medium characteristic sensing unit is used for capturing a chemical characteristic parameter signal and a physical state parameter signal of a flowing medium in the valve body (1) through a medium sensing component arranged by the sensor arrangement unit to form a medium characteristic related original signal; The sealing leakage sensing unit is used for detecting a medium permeation signal at a matching gap between the elastic sealing seat (3) and the valve core (2) through a leakage sensing component arranged by the sensor arrangement unit to form a sealing leakage related original signal; the environment state sensing unit is used for acquiring temperature and humidity signals and electromagnetic interference related signals outside the valve body (1) through the environment sensing components distributed by the sensor distribution unit to form environment state related original signals; The data integration unit is used for receiving various original signals output by the seal abrasion sensing unit, the medium characteristic sensing unit, the seal leakage sensing unit and the environment state sensing unit, classifying and summarizing according to the time stamp sequence, and generating original sensing data required by the parameter acquisition module.
  4. 4. A corrosion resistant self-compensating seal shut-off valve according to claim 1, wherein, The signal preprocessing module comprises an interference filtering unit, a signal amplifying unit, an analog-to-digital conversion unit and a standardized processing unit; The interference filtering unit is used for filtering the original sensing data according to the signal characteristics and the environment interference characteristics of the original sensing data, eliminating invalid interference signals caused by electromagnetic interference and medium fluctuation and generating valid signals; the signal amplifying unit is used for carrying out amplitude adjustment on the effective signal so as to enable the signal intensity to adapt to the subsequent conversion requirement and generate an amplified analog signal; the analog-to-digital conversion unit is used for synchronously recording time marks in the signal conversion process and converting the amplified analog signals into preprocessed digital signals in a preset format; and the standardized processing unit is used for carrying out normalization processing on the preprocessed digital signals, eliminating the dimension difference of different types of signals and generating standardized digital signals.
  5. 5. A corrosion resistant self-compensating seal shut-off valve according to claim 1, wherein, The core algorithm unit, the corrosion condition correction unit and the abnormal fault tolerance unit of the main control decision module comprise: The characteristic extraction unit is used for extracting the seal abrasion characteristic parameter, the medium corrosion characteristic parameter and the seal state characteristic parameter from the standardized digital signal to form a first characteristic calculation parameter; The compensation quantity initial calculation unit is used for calculating initial values of the seal clearance compensation quantity and the seal pressure compensation quantity through a preset algorithm model based on the first characteristic calculation parameters; The working condition identification unit is used for judging the corrosion grade and the working condition type of the current medium according to the medium corrosion characteristic parameters and providing an adaptation basis for the corrosion working condition correction unit; The parameter adapting unit is used for retrieving preset working condition adapting parameters based on the corrosion grade and the working condition type determined by the working condition identifying unit, wherein the adapting parameters comprise compensation sensitivity parameters and compensation interval parameters; The result correction unit is used for substituting the adaptive parameters output by the parameter adaptation unit into the initial calculation result of the compensation amount initial calculation unit, dynamically adjusting the seal clearance compensation amount and the seal pressure compensation amount, and generating corrected first compensation amount data; The abnormality detection unit is used for monitoring the transmission state of the standardized digital signal and the logic state of the compensation quantity calculation process in real time, and identifying sensing signal abnormality and calculating logic abnormality; The abnormality processing unit is used for calling a corresponding abnormality processing strategy for the sensing signal abnormality and the calculation logic abnormality identified by the abnormality detection unit, adopting a redundant data complement mode when the sensing signal abnormality and adopting a historical data deduction mode when the calculation logic abnormality to obtain abnormality correction data; The instruction generation unit is used for receiving the first compensation amount data output by the result correction unit or the abnormal correction data output by the abnormal processing unit, converting the first compensation amount data or the abnormal correction data into a sealing clearance adjustment instruction and a sealing pressure adjustment instruction according to a preset instruction format, and combining the sealing clearance adjustment instruction and the sealing pressure adjustment instruction to form an accurate compensation driving instruction.
  6. 6. A corrosion resistant self-compensating seal shut-off valve according to claim 5, wherein, The abnormality processing unit comprises an abnormality type fine molecule unit, a calculation logic unit and a calculation logic unit, wherein the abnormality type fine molecule unit is used for receiving the sensing signal abnormality and the calculation logic abnormality which are identified by the abnormality detection unit, further dividing the sensing signal abnormality into a signal missing abnormality and a signal fluctuation abnormality, further dividing the calculation logic abnormality into an algorithm parameter abnormality and a data association abnormality, and determining the specific type of the abnormality; The redundant data calling subunit is used for calling backup sensing data of the same type of sensing components in the parameter acquisition module and historical synchronous data of the same monitoring dimension aiming at signal missing abnormality and signal fluctuation abnormality to form a redundant data set; The redundant data complement subunit is used for carrying out interpolation complement on the redundant data of the adjacent time nodes, carrying out weighted fusion on the effective data in the redundant data set and generating sensing abnormal complement data; The historical data screening subunit is used for aiming at algorithm parameter abnormality and data association abnormality, calling historical compensation calculation data under the same working condition and the same wear level stored in the main control decision module, and screening out effective historical data with the data integrity and the association reaching standards; The historical data deducing subunit is used for deducing algorithm parameter abnormity, deducing algorithm parameter correction value adapting to the current working condition based on the effective historical data reversely, relating the data to be abnormal, fitting the reasonable range of the current compensation quantity through the change trend of the effective historical data, and generating logic abnormal deduced data; the abnormal correction data integration subunit is used for receiving the sensing abnormal completion data output by the redundant data completion subunit or the logic abnormal deduction data output by the historical data deduction subunit, and carrying out standardized integration according to a preset data format to obtain the abnormal correction data.
  7. 7. A corrosion resistant self-compensating seal shut-off valve according to claim 5, wherein, The iterative optimization process of the core algorithm unit comprises the following steps: The feedback data receiving unit is used for receiving the real-time continuous data signals transmitted by the feedback verification module and determining actual displacement execution parameters, actual pressure regulation parameters and actual load operation parameters contained in the signals; The feedback characteristic extraction unit is used for extracting a deviation value, a deviation change rate and a deviation duration between an actual parameter and a target parameter corresponding to a previous compensation driving instruction from the real-time continuous data signal to form a feedback characteristic parameter; the deviation cause analysis unit is used for combining the latest original sensing data output by the parameter acquisition module, correlating feedback characteristic parameters and analyzing causes generated by deviation, wherein the causes comprise seal abrasion state change, medium corrosion working condition fluctuation and response lag of an actuating mechanism; The algorithm parameter dynamic adjustment unit is used for adjusting the weight coefficient, the compensation calculation threshold value and the working condition adaptation correlation factor of the preset algorithm model in the core algorithm unit according to the deviation cause analysis result to generate an adjusted algorithm parameter; The compensation quantity iterative calculation unit is used for calling the adjusted algorithm parameters, and recalculating the seal clearance compensation quantity and the seal pressure compensation quantity by combining the latest extracted seal abrasion characteristic parameters and the latest extracted medium corrosion characteristic parameters to obtain second compensation quantity data after iterative optimization; and the optimization result output unit is used for transmitting the second compensation amount data to the instruction generation unit of the main control decision module, providing a basis for updating the compensation driving instruction and realizing the loop iteration optimization of the core algorithm unit.
  8. 8. A corrosion resistant self-compensating seal shut-off valve according to claim 1, wherein, The feedback verification module includes: The signal acquisition unit is used for acquiring a displacement execution signal, a pressure regulation signal and a load operation signal of the electric control execution module and synchronously recording the acquisition time stamp of each signal; The signal noise reduction unit is used for carrying out noise elimination on the acquired real-time continuous data signals, eliminating invalid signals caused by vibration and electromagnetic interference of the actuating mechanism and generating noise-reduced signals; the data alignment unit is used for aligning the noise-reduced displacement execution signal, the pressure regulation signal and the load operation signal to the same time dimension according to the acquisition time stamp to form time sequence alignment data; the signal output unit is used for transmitting the time sequence alignment data to the main control decision module and providing standardized feedback data for iterative optimization of the core algorithm unit.
  9. 9. A corrosion resistant self-compensating seal shut-off valve according to claim 1, wherein, The electric control execution module comprises: The instruction analysis unit is used for receiving the sealing clearance adjustment instruction and the sealing pressure adjustment instruction output by the main control decision module and analyzing to obtain a target displacement of the electric push rod (5) and a target pressure value of the micro air pump; The cooperative control unit is used for determining control logic according to the abrasion grade and the corrosion working condition of the sealing pair, only starting the micro air pump when the sealing pair is lightly abraded, synchronously starting the electric push rod (5) and the micro air pump when the sealing pair is moderately abraded, and starting the electric push rod (5) and then finely adjusting the micro air pump when the sealing pair is severely abraded; The displacement driving unit is used for controlling the expansion rate and the stroke of the electric push rod (5) according to the target displacement, acquiring actual displacement data in real time through a built-in displacement sensor, comparing the actual displacement data with the target displacement, and correcting in real time when the deviation exceeds a preset range; The pressure driving unit is used for controlling the inflation rate of the micro air pump according to the target pressure value, acquiring actual pressure data in real time through a pressure sensor of an inflation cavity of the elastic sealing seat (3) and comparing the actual pressure data with the target pressure value, and starting and stopping the micro air pump to supplement or release pressure when the deviation exceeds a preset range; and the execution state feedback unit is used for synchronously transmitting the actual displacement data of the displacement driving unit and the actual pressure data of the pressure driving unit to the feedback verification module to form a signal closed loop of the execution layer and the verification layer.
  10. 10. The corrosion resistant self-compensating sealing shut-off valve of any of claims 1,2,3, 5,6 to 8, The compensation amount initial calculation unit adopts a fuzzy PID fusion multi-parameter coupling preset algorithm model, and takes the seal abrasion characteristic parameter as a core input and the medium corrosion characteristic parameter as a correction input; The working condition identification unit judges the corrosion grade and the working condition type of the medium according to the pH value, the ion concentration and the environmental temperature parameter in the characteristic parameter of the medium corrosion; the redundant data complement subunit performs interpolation complement on the redundant data of adjacent time nodes on the signal missing exception, and performs weighted fusion on the redundant data on the signal fluctuation exception; the signal acquisition unit acquires corresponding signals through a displacement sensor arranged in the electric push rod (5) and a pressure sensor and a torque sensor of the air inflation cavity of the elastic sealing seat (3) respectively; The algorithm parameter dynamic adjustment unit correspondingly adjusts a weight coefficient, a compensation amount calculation threshold value and a working condition adaptation association factor of a preset algorithm model according to the deviation cause; The sensor layout unit is used for circumferentially arranging a high-frequency impedance sensor on the sealing surface of the elastic sealing seat (3), arranging a pH sensor and an ion concentration sensor in a medium channel in the valve body (1), arranging a conductive rubber sensor outside a sealing fit clearance, and arranging a temperature and humidity sensor and an electromagnetic interference sensor on the outer wall of the valve body (1).

Description

Corrosion-resistant self-compensating sealing stop valve Technical Field The invention relates to the technical field of valves, in particular to a corrosion-resistant self-compensating sealing stop valve. Background The stop valve is used as a core component for realizing medium on-off and flow regulation in a fluid conveying system, is widely applied to a plurality of fields such as chemical industry, petroleum, municipal water supply, energy power, medicine and food, and the like, and the sealing performance and the operation stability of the stop valve directly influence the safe and efficient operation of the system. However, under actual complex working conditions, the traditional stop valve gradually exposes a plurality of technical defects that firstly, a sealing structure adopts a fixed form, the fit clearance between an elastic sealing seat and a valve core cannot be dynamically adjusted according to the abrasion condition of a sealing surface, and as the service time is prolonged, the sealing surface is easy to generate sealing performance attenuation due to medium scouring, corrosion and mechanical abrasion, so that medium leakage is caused, particularly in a corrosive medium environment, the leakage risk is obviously increased; In view of the shortcomings of the prior art, the present invention provides a corrosion-resistant self-compensating sealing stop valve that solves one or more of the problems set forth in the background art above. Disclosure of Invention The present invention is directed to a corrosion-resistant self-compensating sealing stop valve that overcomes one or more of the problems set forth in the background above. The invention aims at realizing the aim by adopting the following technical scheme that the corrosion-resistant self-compensating sealing stop valve comprises a valve body, wherein an elastic sealing seat is arranged on a valve seat hole of the valve body, a valve core in sealing fit with the elastic sealing seat is arranged at the bottom of the valve rod, and a self-compensating sealing control component is arranged on the outer wall of the valve body, wherein the self-compensating sealing control component comprises a parameter acquisition module, a signal preprocessing module, a main control decision module, an electric control execution module and a feedback verification module; The parameter acquisition module is used for acquiring a sealing abrasion state signal, a medium characteristic signal, a sealing leakage signal and an environment state signal of the elastic sealing seat and generating original sensing data; the signal preprocessing module is used for carrying out anti-interference processing and digital conversion on the original sensing data to generate a standardized digital signal; The main control decision module is used for receiving the standardized digital signal, performing seal compensation quantity calculation through a built-in core algorithm unit, adjusting a calculation result by combining the adaptive parameters of the corrosion working condition correction unit, and generating an accurate compensation driving instruction through processing of the abnormal fault-tolerant unit; The electric control execution module is used for receiving the compensation driving instruction and adjusting the sealing compensation pressure of the elastic sealing seat and the displacement distance of the valve core through the driving device; And the feedback check module is used for collecting real-time continuous data signals of the electric control execution module, transmitting the real-time continuous data signals to the main control decision module, providing a basis for iterative optimization of the compensation driving instruction by the core algorithm unit, and forming closed-loop control. Preferably, the driving device comprises an electric push rod and a miniature air pump, the electric push rod is installed in the valve rod, the output end of the electric push rod is fixedly provided with a valve core, the miniature air pump is installed in the self-compensating sealing control assembly, and the miniature air pump is communicated with the inflation cavity of the elastic sealing seat through an anti-corrosion hose. Preferably, the parameter acquisition module comprises a sensor layout unit, a wear sensing component, a medium sensing component, a leakage sensing component and an environment sensing component, wherein the sensor layout unit is used for fixedly arranging the wear sensing component, the medium sensing component, the leakage sensing component and the environment sensing component in the circumferential direction of a sealing surface of the elastic sealing seat, a medium circulation channel in the valve body and a corresponding area of the outer wall of the valve body respectively; the seal abrasion sensing unit is used for monitoring a contact resistance change signal and a compression amount change signal of the sealing surface of the e