Gate valve positioning control system and method

By calculating characteristic density and comparing flow rates, the gate valve parameters are adjusted by locking the middle value of the data range. Combined with pipeline flow and acoustic wave analysis, the accuracy deviation problem in gate valve positioning control is solved, achieving high precision and dynamic compensation, quickly identifying leakage points, and ensuring system stability.

CN120993974BActive Publication Date: 2026-02-27ZHEJIANG WO GUOHUA VALVE CO LTD
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Patent Information

Application Number
CN202511524761.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-24
Publication Date
2026-02-27
Estimated Expiration
2045-10-24

AI Technical Summary

Technical Problem

In existing technologies, the positioning control of gate valves suffers from precision deviations, resulting in inaccurate flow monitoring and an inability to achieve precise control.

Method used

By calculating the characteristic density and comparing the flow rate, the middle value of the data range is locked as the execution parameter, and the gate valve opening is adjusted in real time. Combined with pipeline flow monitoring and acoustic signal analysis, the location of the leak point is identified, and precise control is achieved.

Benefits of technology

It improves the initial accuracy of gate valve opening control, dynamically compensates for deviations caused by changes in operating conditions and wear, quickly identifies and locates leakage problems, and ensures flow matching and system safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a gate valve positioning control system and method, and relates to the technical field of gate valves, and solves the problem that the precision of a gate valve is not further controlled, and the precision of the gate valve is deviated in a control process, the application compares actual flow with theoretical flow in the operation process of the gate valve, adjusts the execution parameters in real time according to the deviation, and the adjustment range is controlled in detail based on the data interval, so that the blindness of parameter adjustment is avoided, the dynamic correction mechanism can compensate the deviation caused by factors such as pipeline working condition change and execution mechanism wear in time, the dynamic precision of gate valve control is obviously improved, and the flow is always matched with the target opening.
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Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gate valves, in particular to a gate valve positioning control system and method. BACKGROUND

[0002] In industrial production, as a key control component of a fluid conveying system, the precise positioning of the opening degree of a gate valve directly affects the stability of process parameters such as flow and pressure in the pipeline, and further relates to production efficiency, energy consumption control and system safety.

[0003] The application with the publication number CN117806289A discloses a gate valve positioning control system and method, which comprises a valve control cloud end, a target customer gate control unit, a container detection unit, and the like.

[0004] In the positioning control process of the gate valve, the opening degree of the gate valve is generally adjusted based on preset parameters, but in the actual processing process, there may be control deviation, which leads to deviation in the monitoring flow associated with the corresponding gate valve, and the precision of the gate valve is not further controlled, which leads to deviation in the precision of the gate valve in the control process, and cannot achieve good precision control effect. SUMMARY

[0005] In view of the deficiencies of the prior art, the application provides a gate valve positioning control system and method, which solves the problem that the precision of the gate valve is not further controlled, leading to deviation in the precision of the gate valve in the control process.

[0006] To achieve the above purpose, the application is implemented by the following technical scheme: a gate valve positioning control method, comprising the following steps:

[0007] Step one, according to the input control parameters, confirm the associated opening degree of the gate valve, and according to the associated opening degree, confirm the associated compressed air data of the historical process, and verify the data interval, and select the execution parameters from the data interval, the specific way is:

[0008] According to the corresponding control parameter, the associated opening degree of the gate valve is confirmed, and from the historical processing, the compressed air data associated with the corresponding associated opening degree is confirmed;

[0009] A group of calibration scalars is confirmed by bundling a plurality of groups of compressed air data into a data packet, selecting a minimum value and a maximum value from the data packet, and a group of measuring lines is generated according to the confirmed calibration scalars, the length of the first stage of the measuring line is one unit length lower than the calibration scalar, the unit length is a preset value, the measuring line is controlled to move within the calibration scalar, and the number G of compressed air data associated with different moving processes is confirmed, and according to the length L of the corresponding measuring line, the characteristic density Md associated with the corresponding moving process is confirmed by using: G ÷ L = Md, and the maximum characteristic density Mdmax confirmed in this stage is taken as the stage characteristic of this stage.

[0010] The second stage is executed again, the measuring line generated in the second stage is two unit lengths lower than the calibration scalar, and the same confirmation method as the first stage is used to confirm the stage characteristics associated with this stage;

[0011] In this way, different stage characteristics associated with subsequent different stages are sequentially confirmed, and the process stops when the corresponding measuring line of the last stage only has two unit lengths, the locked number of stage characteristics are compared and verified, the maximum value is selected from them, the stage corresponding to the maximum value is selected as the selected stage, the position of the measuring line corresponding to the selected stage is recorded, and a plurality of compressed air data associated with the measuring line are confirmed, and the minimum value and the maximum value are selected from them as the determined data interval.

[0012] The middle value of the interval is selected from the confirmed data interval and used as the execution parameter, and the gas source is controlled to spray compressed air according to the execution parameter;

[0013] Step two, monitor the flow associated with the gate valve, and compare the monitored flow with the flow corresponding to the associated opening degree, and confirm whether the execution parameter needs to be adjusted again according to the comparison process, and the specific method is:

[0014] The flow corresponding to the associated opening degree is calibrated as LL, and the monitored flow is calibrated as Ls, if LL = Ls, no processing is needed;

[0015] If LL ≠ Ls, the numerical value of LL and Ls is confirmed:

[0016] If LL < Ls, according to the confirmed data interval, the execution parameter is lowered by one unit value, the unit value is the preset value, the associated flow data TL after adjustment processing is recorded, the unit change value DB is confirmed by Ls-TL=DB, the unit value DW to be adjusted is confirmed by: (Ls-LL) ÷ TL=DW, and the original execution parameter is lowered, the specific unit value of the lowered execution parameter is DW, if the lowered execution parameter exceeds the original data interval, an error signal is generated, otherwise, the adjustment is directly performed;

[0017] If LL > Ls, according to the confirmed data interval, the execution parameter is raised by one unit value, the unit value is the preset value, the associated flow data TZ after adjustment processing is recorded, the unit change value DD is confirmed by TZ-Ls=DD, the unit value DZ to be adjusted is confirmed by: (LL-Ls) ÷ DD=DZ, and the original execution parameter is raised, the specific unit value of the raised execution parameter is DZ, if the lowered execution parameter exceeds the original data interval, an error signal is generated, otherwise, the adjustment is directly performed;

[0018] Step three, the pipeline associated with the current gate valve is confirmed, and the upstream gate valve flow and the current gate valve flow of the confirmed pipeline are monitored and feature checked, the monitoring period is locked, the consistency of the flow characteristics associated with the monitoring period is checked, and whether the pipeline flow is abnormal is evaluated, and the specific method is:

[0019] The flow of the upstream gate of the pipeline corresponding to the current time is recorded, and the recorded flow parameter is kept unchanged, and the recorded flow data is recorded as L1, and the cross-sectional area and length data associated with the specified pipeline are confirmed, and the internal volume of the corresponding pipeline is confirmed based on the cross-sectional area and length data;

[0020] According to the internal volume and the confirmed flow data L1, the monitoring period T is confirmed, T=internal volume÷L1, the initial time of the monitoring period T is the current time, and the flow data L2 associated with the current gate valve at the end time is confirmed when the monitoring period T ends;

[0021] Whether L1 and L2 are the same is evaluated, if the same, an abnormal gate valve control signal is directly generated for display, for external personnel to view, if not the same, a pipeline flow abnormal signal is generated;

[0022] Step four, when the pipeline flow is abnormal, whether there is a sound wave signal between the corresponding sensors on both sides of the pipeline is identified, if there is, the position of the pipeline leakage point is confirmed according to the identification result, if not, no processing is performed, and the specific method is:

[0023] Confirm the receiving time of the sound wave signals received by the two side sensors, and according to the confirmed receiving time, mark the pipe opening with the receiving time in the front as the front opening, mark the pipe opening with the receiving time in the rear as the rear opening, and confirm the time difference Cz between the two groups of receiving times;

[0024] Adopt: Cz*Vs=CL to confirm the distance difference CL, and the Vs is the sound speed, and then according to the overall length CD of the pipe, lock the point position in the pipe, mark the distance corresponding to the point position and the front opening as the front distance, mark the distance corresponding to the point position and the rear opening as the rear distance, when the locked point position satisfies: rear distance-front distance=CL, mark the locked point position as the leakage point position, and perform position calibration and display.

[0025] Preferably, a gate valve positioning control system comprises:

[0026] An execution parameter confirmation end confirms the associated opening degree of the gate valve according to the input control parameter, confirms the compressed air data associated with the historical process according to the associated opening degree, checks the data, confirms the data interval, and selects the execution parameter from the data interval;

[0027] A parameter secondary adjustment end monitors the flow associated with the gate valve, compares the monitored flow with the flow corresponding to the associated opening degree, and confirms whether the execution parameter needs to be adjusted again according to the comparison process;

[0028] A pipeline anomaly evaluation end confirms the pipeline associated with the current gate valve, monitors and checks the characteristics of the upstream gate valve flow and the current gate valve flow of the confirmed pipeline, locks the monitoring period, checks the consistency of the flow characteristics associated with the monitoring period, and evaluates whether the pipeline flow is abnormal;

[0029] A leakage point confirmation end confirms the time characteristics of the sound wave signals associated with the corresponding sensors on both sides of the pipeline, checks the confirmed time characteristics, and confirms the position of the pipeline leakage point.

[0030] The application provides a gate valve positioning control system and method.

[0031] The application locks the most representative data interval from different stages through the calculation and comparison of feature density, finally takes the interval median value as the execution parameter, fully utilizes the historical operation experience, guarantees the rationality of parameter selection through scientific density analysis logic, effectively improves the initial accuracy of gate valve opening control, and lays a reliable foundation for subsequent regulation and control.

[0032] In the operation of the gate valve, by comparing the actual flow with the theoretical flow, the execution parameters are adjusted in real time according to the deviation, and the adjustment range is fine controlled based on the data interval, so that the blindness of parameter adjustment is avoided; this dynamic correction mechanism can compensate the deviation caused by factors such as pipeline working condition change and actuator wear in time, significantly improves the dynamic precision of the gate valve control, and ensures that the flow always matches the target opening degree;

[0033] By comparing the upstream and downstream flow in the period, the abnormal flow can be quickly distinguished from the gate valve regulation problem or the pipeline itself abnormality (such as leakage, blockage), the misjudgment of the abnormal reason in the traditional detection is avoided, a clear direction is provided for subsequent maintenance, the time difference of the sound wave signals received by the sensors at both ends of the pipeline is used to calculate the leakage point position, the logic is clear and the positioning is accurate. This mechanism not only can quickly identify the leakage problem, but also can provide specific position guidance for maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a method flow diagram of the present application;

[0035] Figure 2 It is a principle framework diagram of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] First embodiment

[0038] Please refer to Figure 1 The present application provides a gate valve positioning control method, comprising the following steps:

[0039] Step one, according to the input control parameter, confirm the associated opening degree of the gate valve, and according to the associated opening degree, confirm the historical process associated with the compressed air data, and check the data to confirm the data interval, and select the execution parameter from the data interval, wherein the specific way of selecting the execution parameter is:

[0040] The control parameter is input by the operator himself, and the associated opening degree of the gate valve is confirmed according to the corresponding control parameter. When the control parameter is 30%, the corresponding associated opening degree is 30% open. From the historical process, the associated compressed air data (that is, the power data associated with the compressed air, which adjusts the opening degree of the gate valve) associated with the corresponding associated opening degree is confirmed.

[0041] and bundle several groups of compressed air data into a data packet, select minimum value and maximum value from the data packet, confirm a set of calibration scalar lines, generate a set of measuring lines according to the confirmed calibration scalar lines, the first stage measuring line length is one unit length lower than the calibration scalar line, the unit length is a preset value, which is determined by the operator according to experience, control the measuring line to move within the calibration scalar line, and confirm the number G of compressed air data associated with different moving processes, and according to the length L of the corresponding measuring line, use: G ÷ L = Md to confirm the characteristic density Md associated with the corresponding moving process, and take the maximum characteristic density Mdmax confirmed in this stage as the stage characteristic associated with this stage;

[0042] Then execute the second stage, and the measuring line generated in the second stage is two unit lengths lower than the calibration scalar line, and the same confirmation method as the first stage is used to confirm the stage characteristic associated with this stage;

[0043] In this way, the different stage characteristics associated with subsequent different stages are confirmed in turn, and the process stops when the corresponding measuring line of the last stage only has two unit lengths. Compare and verify the locked several stage characteristics, select the maximum value from them, take the stage associated with the maximum value as the selected stage, record the position of the measuring line corresponding to the selected stage, confirm the several compressed air data associated with the measuring line, and select the minimum value and the maximum value from them as the determined data interval;

[0044] And select the interval value from the confirmed data interval as the execution parameter to control the air source to spray compressed air according to the execution parameter;

[0045] Specifically, according to the minimum value and the maximum value associated with the corresponding process in the corresponding historical process, the corresponding data interval can be locked to complete the construction of the corresponding calibration length line, and the corresponding measuring line is generated according to the length standard, and the calibration line is selected and moved through the measuring line. In the specific execution operation process, several processing stages are confirmed, and the stage characteristics associated with each stage are different. From the several different processing stages, the specific confirmation of the data interval is carried out, and the specific selection of the execution parameter is carried out to ensure the preliminary control process of the gate valve and ensure the control accuracy;

[0046] Step two, monitor the flow associated with the gate valve, and compare the monitored flow with the flow corresponding to the associated opening degree, confirm whether the execution parameter needs to be adjusted again according to the comparison process, and ensure the accuracy control process of the gate valve, wherein the specific way of adjusting again is:

[0047] The flow corresponding to the opening degree is calibrated as LL, and the monitored flow is calibrated as Ls. If LL=Ls, no processing is required.

[0048] If LL≠Ls, the numerical value of LL and Ls is confirmed:

[0049] If LL<Ls, according to the confirmed data interval, the execution parameter is lowered by one unit value, the unit value is a preset value, which is determined by the operator in advance according to experience, the flow data TL associated with the adjustment processing is recorded, the unit change value DB is confirmed by Ls-TL=DB, the unit value DW to be adjusted is confirmed by: (Ls-LL)÷TL=DW, and the original execution parameter is lowered by DW. If the lowered execution parameter exceeds the original data interval, an error signal is generated, otherwise, the adjustment is directly performed.

[0050] If LL>Ls, according to the confirmed data interval, the execution parameter is raised by one unit value, the unit value is a preset value, which is determined by the operator in advance according to experience, the flow data TZ after adjustment processing is recorded, the unit change value DD is confirmed by TZ-Ls=DD, the unit value DZ to be adjusted is confirmed by: (LL-Ls)÷DD=DZ, and the original execution parameter is raised by DZ. If the lowered execution parameter exceeds the original data interval, an error signal is generated, otherwise, the adjustment is directly performed.

[0051] Specifically, when the corresponding gate valve is opened to a specified degree, but the actual flow monitored is significantly different from the corresponding flow, it means that there is a large error. In order to minimize the error, the associated execution parameter is adjusted, and the execution parameter is adaptively adjusted according to the specific adjustment process. If the execution parameter to be reached after adjustment exceeds the corresponding data interval, it means that the monitored data deviation is large, which means that the corresponding gate valve has specific abnormalities, and the abnormal reason needs to be confirmed to identify whether there is a leakage in the corresponding pipeline.

[0052] Step three, confirm the pipeline associated with the current gate valve, and monitor and verify the characteristics of the upstream gate valve flow and the current gate valve flow of the confirmed pipeline, lock the monitoring period, and verify the consistency of the flow characteristics associated with the monitoring period to evaluate whether the pipeline flow is abnormal. The specific way of evaluation is:

[0053] The flow of the upstream gate of the corresponding pipeline at the current time is recorded, and the recorded flow parameter remains unchanged, and the recorded flow data is recorded as L1. The cross-sectional area and length data associated with the specified pipeline are confirmed, and the internal volume of the corresponding pipeline is confirmed based on the cross-sectional area and length data.

[0054] According to the internal volume and the confirmed flow data L1, the monitoring period T is confirmed, T = internal volume ÷ L1, the initial moment of the monitoring period T is the current moment, and at the end of the monitoring period T, the end moment is confirmed, and the flow data L2 associated with the current gate valve is confirmed;

[0055] Assess whether L1 and L2 are the same, if they are the same, it means that there is no any abnormality in the corresponding pipeline, and if there is an abnormality in the current gate valve during the adjustment process, it will cause the monitored flow to be abnormal, and a gate valve control abnormality signal will be generated directly for display for external personnel to view, if they are not the same, a pipeline flow abnormality signal will be generated, and then based on the pipeline flow abnormality signal, the pipeline abnormal point will be investigated to identify whether there is a leakage point in the pipeline, and specific display will be performed.

[0056] Step four, when the pipeline flow is abnormal, whether the corresponding sensors on both sides of the pipeline exist sound wave signals is identified, if they exist, the position of the pipeline leakage point is confirmed according to the identification result, if they do not exist, no any processing is performed, specifically, when the pipeline flow is abnormal, either there is a leakage in the corresponding pipeline, then sound wave signals will be generated due to the existence of the leakage point, and the leakage point can be positioned based on the interval time difference of the corresponding sound wave signals, otherwise, when the corresponding pipeline does not exist leakage but the flow is abnormal, it means that there is a blockage or other situation in the corresponding pipeline, and manual inspection needs to be performed for abnormality determination.

[0057] Among them, the specific way to confirm the position of the pipeline leakage point is:

[0058] The receiving moments of the sound wave signals received by the sensors on both sides are confirmed, according to the confirmed receiving moments, the pipeline port with the receiving moment in the front is recorded as the front port, the pipeline port with the receiving moment in the rear is recorded as the rear port, and the time difference Cz associated with the two groups of receiving moments is confirmed.

[0059] The distance difference CL is confirmed by using Cz × Vs = CL, Vs is the speed of sound, and then the overall length CD of the pipeline is confirmed, the corresponding point position is locked in the pipeline, the distance associated with the front port is recorded as the front distance, and the distance associated with the rear port is recorded as the rear distance, when the locked point position satisfies: rear distance - front distance = CL, the locked point position is recorded as the leakage point position, and the position is marked and displayed.

[0060] Specifically, when there is a leakage point in the corresponding pipeline, the time difference associated with the time is confirmed according to the front and rear time relationship of the corresponding received signals, then the point position is confirmed from the confirmed time difference, the associated difference data is identified, and then the locked point is confirmed, and the confirmation of the corresponding leakage point position is completed, which is convenient for display.

[0061] Second Embodiment

[0062] Combination Figure 2 A gate valve positioning control system, comprising:

[0063] The execution parameter confirmation end confirms the associated opening degree of the gate valve based on the input control parameters, confirms the associated compressed air data of the historical process based on the associated opening degree, verifies and confirms the data range, and selects the execution parameters from the data range.

[0064] The secondary parameter adjustment end monitors the flow rate associated with the gate valve and compares the monitored flow rate with the flow rate corresponding to the associated opening degree. Based on the comparison process, it is determined whether the execution parameters need to be readjusted.

[0065] The pipeline anomaly assessment end confirms the pipeline associated with the current gate valve, then monitors and verifies the upstream gate valve flow and the current gate valve flow of the confirmed pipeline, locks the monitoring period, verifies the consistency of the flow characteristics associated with the monitoring period, and assesses whether the pipeline flow is abnormal.

[0066] The leak point confirmation end confirms the time characteristics of the acoustic signals associated with the corresponding sensors on both sides of the pipeline, performs feature verification on the confirmed time characteristics, and confirms the location of the pipeline leak point.

[0067] Some of the data in the above formulas are numerical calculations with dimensions removed, and the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0068] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A gate valve positioning control method, characterized in that, Includes the following steps: Step 1: Based on the input control parameters, confirm the associated opening degree of the gate valve, and based on the associated opening degree, confirm the compressed air data associated with the historical process. Verify and confirm the data range, and select the execution parameters from the data range. The specific method is as follows: Confirm the associated opening degree of the gate valve based on the corresponding control parameters, and confirm the compressed air data associated with the corresponding opening degree from historical processing. Several sets of compressed air data are bundled into a data package. The minimum and maximum values ​​are selected from the data package to confirm a set of calibration scalar lines. Based on the confirmed calibration scalar lines, a set of measurement lines is generated. The length of the measurement line in the first stage is one unit shorter than the calibration scalar lines. The unit length is a preset value. The measurement line is controlled to move within the calibration scalar lines. The number of compressed air data G associated with different movement processes is confirmed. Based on the length L of the corresponding measurement line, the characteristic density Md associated with the corresponding movement process is confirmed using the formula: G÷L=Md. The maximum characteristic density Mdmax confirmed in this stage is taken as the stage feature of this stage. Then, the second stage is executed. The measurement line generated in the second stage is two units lower than the calibration scale line. The same confirmation method as the first stage is used to confirm the stage characteristics associated with this stage. Similarly, the characteristics of each stage associated with the subsequent stages are confirmed in turn until the measurement line corresponding to the last stage has only two unit lengths. The locked stage characteristics are compared and verified, and the maximum value is selected. The stage associated with the maximum value is taken as the selected stage. The position of the measurement line corresponding to the selected stage is recorded. The compressed air data associated with the measurement line are confirmed, and the minimum and maximum values ​​are selected as the determined data range. Then, from the confirmed data range, select the middle value of the range as the execution parameter, and control the air source to spray compressed air according to the execution parameter; Step 2: Monitor the flow rate associated with the gate valve and compare the monitored flow rate with the flow rate corresponding to the associated opening degree. Based on the comparison process, determine whether the execution parameters need to be readjusted. Step 3: Confirm the pipeline associated with the current gate valve, then monitor and verify the upstream gate valve flow and the current gate valve flow of the confirmed pipeline, lock the monitoring period, verify the consistency of the flow characteristics associated with the monitoring period, and assess whether the pipeline flow is abnormal. Step 4: When there is an abnormal flow rate in the pipeline, identify whether there is an acoustic signal from the corresponding sensors on both sides of the pipeline. If there is, confirm the location of the pipeline leak point based on the identification result. If there is no signal, no action is taken.

2. The gate valve positioning control method according to claim 1, characterized in that, In step two, the specific method for readjusting the execution parameters is as follows: The flow rate corresponding to the associated opening degree is denoted as LL, and the monitored flow rate is denoted as Ls. If LL = Ls, no processing is required.

3. The gate valve positioning control method according to claim 2, characterized in that, If LL ≠ Ls, then confirm the numerical values ​​of LL and Ls: If LL < Ls, then based on the confirmed data range, the execution parameter is lowered by one unit value, with the unit value being a preset value. The associated flow data TL after the adjustment is recorded. The unit change value DB is confirmed using Ls - TL = DB, and the unit value DW to be adjusted is confirmed using (Ls - LL) ÷ TL = DW. The original execution parameter is then reduced, with the specific reduction unit value being DW. If the reduced execution parameter exceeds the original data range, an error signal is generated; otherwise, the adjustment is performed directly. If LL > Ls, then based on the confirmed data range, the execution parameter is increased by one unit value, which is a preset value. The associated flow data TZ after the adjustment is recorded. The unit change value DD is confirmed by TZ-Ls=DD. The unit value DZ to be adjusted is confirmed by (LL-Ls)÷DD=DZ. The original execution parameter is increased by a specific unit value of DZ. If the reduced execution parameter exceeds the original data range, an error signal is generated. Otherwise, the adjustment is performed directly.

4. The gate valve positioning control method according to claim 1, characterized in that, In step three, the specific method for assessing whether the pipeline flow rate is abnormal is as follows: Record the flow rate of the upstream gate of the pipeline at the current moment, keep the recorded flow rate parameters unchanged, and record the recorded flow rate data as L1. Then confirm the cross-sectional area and length data associated with the specified pipeline, and confirm the internal volume of the corresponding pipeline based on the cross-sectional area and length data. Based on the internal volume and the confirmed flow data L1, the monitoring period T is determined, where T = internal volume ÷ L1. The initial time of the monitoring period T is the current time, and at the end of the monitoring period T, the flow data L2 associated with the current gate valve at the end time is confirmed. Determine if L1 and L2 are the same. If they are the same, generate a gate valve control anomaly signal for external personnel to view. If they are not the same, generate a pipeline flow anomaly signal.

5. The gate valve positioning control method according to claim 4, characterized in that, In step four, the specific method for confirming the location of the pipeline leak is as follows: The reception time of the acoustic signals received by the sensors on both sides is confirmed. Based on the confirmed reception time, the pipe opening with the reception time in front is recorded as the front port, and the pipe opening with the reception time in the back is recorded as the rear port. The time difference Cz between the two sets of reception times is also confirmed. The distance difference CL is determined by the formula Cz×Vs=CL, where Vs is the speed of sound. Based on the overall length CD of the pipeline, the point is locked from inside the pipeline. The distance between the corresponding point and the pre-port is recorded as the pre-port distance, and the distance between the corresponding point and the post-port is recorded as the post-port distance. When the locked point satisfies the condition that post-port distance - pre-port distance = CL, the locked point is recorded as the leak point, and the location is calibrated and displayed.

6. A gate valve positioning control system, wherein the system operates according to a gate valve positioning control method according to any one of claims 1-5, characterized in that, include: The execution parameter confirmation end confirms the associated opening degree of the gate valve based on the input control parameters, confirms the associated compressed air data of the historical process based on the associated opening degree, verifies and confirms the data range, and selects the execution parameters from the data range. The secondary parameter adjustment end monitors the flow rate associated with the gate valve and compares the monitored flow rate with the flow rate corresponding to the associated opening degree. Based on the comparison process, it is determined whether the execution parameters need to be readjusted. The pipeline anomaly assessment end confirms the pipeline associated with the current gate valve, then monitors and verifies the upstream gate valve flow and the current gate valve flow of the confirmed pipeline, locks the monitoring period, verifies the consistency of the flow characteristics associated with the monitoring period, and assesses whether the pipeline flow is abnormal. The leak point confirmation end confirms the time characteristics of the acoustic signals associated with the corresponding sensors on both sides of the pipeline, performs feature verification on the confirmed time characteristics, and confirms the location of the pipeline leak point.

Citation Information

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