Dynamic valve control method and system based on environmental perception

Abstract

The invention is suitable for the technical field of valve management and fluid conveying control, and provides a dynamic valve control method and system based on environmental awareness, and the method comprises the steps: obtaining a historical operation record of a water return system to which a target overflow water return regulating valve belongs, a plurality of historical samples consistent with the current operation background and the upstream mechanical vibration condition are screened out, and the current valve dynamic health index generated for the target overflow backwater adjusting valve is obtained. The method has the beneficial effects that the slurry deposition-scouring alternating effect is introduced into valve health state evaluation for the first time, the deposition-scouring alternating strength index is calculated by extracting the first local vibration signal of the adjacent area of the valve, and the valve scouring deterioration index is calculated by combining the second local vibration signal of the designated area of the valve; therefore, a critical point is identified, a correction factor is generated, and the valve dynamic health index generated in the prior art is corrected.

Description

Technical Field

[0001] This invention belongs to the field of valve management and fluid transport control technology, and particularly relates to a dynamic valve control method and system based on environmental perception. Background Technology

[0002] In the overflow return water stage of a slurry thickener in a mineral processing plant, the return water system is widely used. Its function is to recover and recycle the overflow water from the upper part of the slurry, thereby reducing water costs and maintaining production continuity. In this return water system, the target overflow return water regulating valve undertakes the critical task of flow regulation. By controlling the valve opening, it stabilizes the slurry flow and system pressure, ensuring the normal operation of the loop. This study focuses on this type of regulating valve because it is located downstream of the slurry loop and directly suffers from periodic vibration interference from upstream equipment such as crushers. This disturbance often causes particles in the slurry to deposit at low speeds and be washed away at high speeds, exerting a unique impact on the valve's health. Therefore, compared to regulating valves under normal operating conditions, this valve is more prone to wear and deterioration, making it of significant research importance.

[0003] In existing valve management technologies, the valve dynamic health index has been applied as a comprehensive indicator. This index is generated by collecting signals such as flow rate, pressure, material level, and upstream mechanical vibration to characterize the valve's health level and provide a basis for optimizing opening adjustment, adjustment frequency, action speed, and maintenance prompts. While this method improves the intelligence level of valve management to some extent, it often treats upstream mechanical vibration as a general disturbance factor, neglecting the alternating deposition-scouring effect caused by periodic vibration in fluid dynamics. This makes the health index only reflect the valve's operating status macroscopically, and it is difficult to reveal the local impact and potential deterioration process caused by the alternating deposition and scouring of particles in the valve's vicinity.

[0004] Therefore, the existing technology has technical defects, namely, it cannot determine when the alternating deposition-scouring effect will exceed the valve's tolerance threshold, nor can it quantify the degree of deterioration of the valve's health at the current stage, resulting in an inaccurate and insufficient health index generation result. Summary of the Invention

[0005] The purpose of this invention is to provide a dynamic valve control method and system based on environmental perception, which aims to solve the problems mentioned in the background art.

[0006] This invention is implemented as follows: a dynamic valve control method based on environmental perception, the method comprising:

[0007] Obtain the historical operation records of the return water system to which the target overflow return water regulating valve belongs, and select several historical samples that are consistent with the current operating background and upstream mechanical vibration to obtain the current valve dynamic health index generated for the target overflow return water regulating valve;

[0008] Extract the first local vibration signal of the slurry deposition-scouring alternation area corresponding to the target overflow return water regulating valve in the historical sample, and calculate the deposition-scouring alternation intensity index of the historical sample accordingly;

[0009] Given that the deposition-scouring alternation intensity index of several historical samples continues to increase over time, the second local vibration signal of the valve designated area corresponding to the slurry deposition-scouring alternation area in the historical samples is monitored, and the valve scouring deterioration index is calculated accordingly to identify whether the valve scouring deterioration index has reached a critical point of significant enhancement over time from a stable state.

[0010] If a critical point is identified, obtain its corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index, and generate a correction factor based on the difference between the two to correct the current valve dynamic health index.

[0011] As a further limitation of the technical solution of the present invention, the phrase "consistent with the current operating background" means that the conveying medium in the return water system of the historical sample matches the current operating state in terms of operating parameters such as slurry concentration, flow rate, material level and pressure.

[0012] The phrase "consistent with upstream mechanical vibration" means that the vibration frequency, vibration amplitude, and periodic characteristics of the upstream crusher in historical samples are consistent with the current operating status of the upstream crusher.

[0013] As a further limitation of the technical solution of this invention, the step of extracting the first local vibration signal of the slurry deposition-scouring alternation region corresponding to the target overflow return water regulating valve in the historical sample, and calculating the deposition-scouring alternation intensity index of the historical sample accordingly, includes:

[0014] Analyze historical operation records to determine the slurry deposition-flushing alternation area most relevant to the target overflow return water regulating valve and close to the valve inlet or valve seat area;

[0015] Based on the historical operation records, a first local vibration signal is determined in the alternating region of slurry deposition-scouring in each historical sample. The first local vibration signal includes vibration amplitude, vibration frequency, and spectral energy distribution.

[0016] The deposition-scouring alternation intensity index for each historical sample was calculated based on the variation characteristics of the first local vibration signal.

[0017] As a further limitation of the technical solution of this invention embodiment, the calculation of the deposition-scour alternation intensity index includes: normalizing the first local vibration signal of each time period of each historical sample, fusing the vibration amplitude, vibration frequency and spectral energy distribution according to preset weights to obtain a comprehensive local vibration characteristic quantity; based on the rate of change or accumulation and abrupt change detection of the comprehensive characteristic quantity relative to the normal operating condition baseline, identifying deposition events with a rapid decrease and scour events with a rapid increase in the comprehensive characteristic quantity; statistically analyzing the duration, amplitude exceeding the limit and frequency of occurrence of the deposition events and scour events, calculating the deposition intensity and scour intensity according to preset weights, and obtaining the deposition-scour alternation intensity index based on the weighted combination of the two.

[0018] As a further limitation of the technical solution of the present invention, the second local vibration signal includes the vibration amplitude, vibration acceleration and high-frequency component energy of the specified area of ​​the valve;

[0019] The calculation process of the valve erosion deterioration index includes: within the period of each historical sample, analyzing the degree of deviation of the vibration amplitude, vibration acceleration and high-frequency component energy from the normal operating condition baseline, the degree of deviation including abnormal increase in amplitude, increase in the rate of change of acceleration and accumulation of high-frequency component energy; and fusing the degree of deviation according to a preset weight to obtain the valve erosion deterioration index that characterizes the overall periodic deterioration of the historical sample.

[0020] As a further limitation of the technical solution of this embodiment of the invention, if a critical point is determined to exist, the step of obtaining its corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index, and generating a correction factor based on the difference between the two to correct the current valve dynamic health index includes:

[0021] When the critical point at which the valve scour deterioration index corresponding to a number of historical samples changes from a stable state to a significantly enhanced state over time is determined, the deposition-scour alternation intensity index of the historical samples corresponding to the critical point is obtained.

[0022] Calculate the current sedimentation-scouring alternation intensity index of the target overflow return water regulating valve, and generate a correction factor based on the deviation between the current sedimentation-scouring alternation intensity index and the critical point.

[0023] Obtain the preset control correction amplitude coefficient and combine it with the correction factor to jointly correct the current valve dynamic health index, thereby obtaining an optimized current valve dynamic health index.

[0024] The optimized current valve dynamic health index is applied to adjust the opening range, adjustment frequency, or action speed of the target overflow return water regulating valve, and / or trigger valve maintenance prompts.

[0025] A dynamic valve control system based on environmental perception, the system comprising:

[0026] The historical data processing module is used to obtain the historical operation records of the return water system to which the target overflow return water regulating valve belongs, and to select a number of historical samples that are consistent with the current operating background and upstream mechanical vibration, and to obtain the current valve dynamic health index generated for the target overflow return water regulating valve.

[0027] The intensity index calculation module is used to extract the first local vibration signal of the slurry deposition-scouring alternation area corresponding to the target overflow return water regulating valve in the historical sample, and calculate the deposition-scouring alternation intensity index of the historical sample accordingly.

[0028] The deterioration index calculation module is used to monitor the second local vibration signal of the valve designated area corresponding to the slurry deposition-scouring alternation area in the historical samples when the deposition-scouring alternation intensity index of several historical samples continues to increase over time, and calculate the valve scouring deterioration index accordingly, and identify whether the valve scouring deterioration index has reached a critical point of significant enhancement over time from a stable state.

[0029] The correction module is used to obtain the corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index if a critical point is determined to exist, and to generate a correction factor based on the difference between the two to correct the current valve dynamic health index.

[0030] As a further limitation of the technical solution of the present invention, the phrase "consistent with the current operating background" means that the conveying medium in the return water system of the historical sample matches the current operating state in terms of operating parameters such as slurry concentration, flow rate, material level and pressure.

[0031] The phrase "consistent with upstream mechanical vibration" means that the vibration frequency, vibration amplitude, and periodic characteristics of the upstream crusher in historical samples are consistent with the current operating status of the upstream crusher.

[0032] As a further limitation of the technical solution of this embodiment of the invention, the intensity index calculation module specifically includes:

[0033] The region determination unit is used to analyze historical operation records and determine the alternating slurry deposition-flushing region that is most relevant to the target overflow return water regulating valve and is close to the valve inlet or valve seat area.

[0034] The signal acquisition unit is used to determine the first local vibration signal of the alternating slurry deposition-scouring region in each historical sample based on the historical operation record. The first local vibration signal includes vibration amplitude, vibration frequency and spectral energy distribution.

[0035] The index calculation unit is used to calculate the deposition-scour alternation intensity index for each historical sample based on the variation characteristics of the first local vibration signal.

[0036] As a further limitation of the technical solution of this invention embodiment, the calculation of the deposition-scour alternation intensity index includes: normalizing the first local vibration signal of each time period of each historical sample, fusing the vibration amplitude, vibration frequency and spectral energy distribution according to preset weights to obtain a comprehensive local vibration characteristic quantity; based on the rate of change or accumulation and abrupt change detection of the comprehensive characteristic quantity relative to the normal operating condition baseline, identifying deposition events with a rapid decrease and scour events with a rapid increase in the comprehensive characteristic quantity; statistically analyzing the duration, amplitude exceeding the limit and frequency of occurrence of the deposition events and scour events, calculating the deposition intensity and scour intensity according to preset weights, and obtaining the deposition-scour alternation intensity index based on the weighted combination of the two.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The beneficial effect of this invention lies in the fact that it introduces the alternating effect of slurry deposition and scouring into valve health status assessment for the first time. By extracting the first local vibration signal from the valve's vicinity to calculate the deposition-scouring alternation intensity index, and combining it with the second local vibration signal from a designated area of ​​the valve to calculate the valve scouring deterioration index, a critical point is identified and a correction factor is generated to correct the valve dynamic health index generated by existing technologies. Unlike existing technologies that only use upstream mechanical vibration as a reference for overall disturbance, this invention can reveal the true impact of alternating deposition and scouring caused by periodic vibration on valve deterioration, solving the core problem of inaccurate and insufficient health value generation. Attached Figure Description

[0039] Figure 1 A flowchart of the method provided in the embodiments of the present invention;

[0040] Figure 2 This is a flowchart illustrating the calculation of the deposition-scour alternation intensity index of historical samples in the method provided in this embodiment of the invention;

[0041] Figure 3 This is a flowchart illustrating the process of correcting the current dynamic health index of a valve in the method provided in this embodiment of the invention;

[0042] Figure 4 Application architecture diagram of the system provided in the embodiments of the present invention;

[0043] Figure 5 This is a structural block diagram of the intensity index calculation module in the system provided in the embodiment of the present invention. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0045] Figure 1 A flowchart of the method provided by an embodiment of the present invention is shown.

[0046] Specifically, a dynamic valve control method based on environmental perception includes the following steps:

[0047] Step S100: Obtain the historical operation records of the return water system to which the target overflow return water regulating valve belongs, and select several historical samples that are consistent with the current operating background and upstream mechanical vibration conditions to obtain the current valve dynamic health index generated for the target overflow return water regulating valve.

[0048] The phrase "consistent with the current operating background" means that the conveying medium in the historical sample's return water system matches the current operating status in terms of operating parameters such as slurry concentration, flow rate, material level, and pressure.

[0049] The phrase "consistent with upstream mechanical vibration" means that the vibration frequency, vibration amplitude, and periodic characteristics of the upstream crusher in historical samples are consistent with the current operating status of the upstream crusher.

[0050] In this embodiment of the invention, the water return system is typically used in the overflow water return stage of a slurry thickener in a mineral processing plant. Its main function is to recover the overflow water from the upper part of the thickener and transport it to subsequent stages or for recycling. In this water return stage, the target overflow water return regulating valve undertakes the key task of flow regulation, used to maintain the stability of slurry flow and the rationality of system pressure. The reason for studying this valve in this case is that it is located downstream in the slurry circuit and directly bears the periodic vibration impact from upstream mechanical equipment such as crushers. The particles in the slurry alternately deposit and scour between low and high speeds, causing a special impact on the valve's health. Therefore, it is more prone to wear and deterioration than a general regulating valve, making it of typical research significance.

[0051] The historical operation records are derived from data collection and storage during the long-term operation of the return water system, typically including raw operating data from sensors and monitoring equipment. These data types include at least system operating parameters such as slurry concentration, flow rate, material level, and pressure, as well as vibration signals from upstream machinery (vibration frequency, amplitude, and periodicity), and local vibration and noise signals from the valve body during operation. These historical records provide a data foundation for subsequent comparisons with the current operating status.

[0052] Setting the conditions of "consistency with the current operating background" and "consistency with upstream mechanical vibration" when screening historical samples is to ensure that the selected historical data samples are comparable to the current operating state under study in terms of key external factors. Consistency with the operating background means that the main operating parameters such as slurry concentration, flow rate, material level, and pressure should be basically matched, thus ensuring that the objects being compared are in similar media conveying environments. Consistency with upstream mechanical vibration means that the vibration frequency, vibration amplitude, and periodicity characteristics of the upstream crusher in the historical samples are generally consistent with the current state, ensuring the correspondence between the reference sample and the current disturbance environment. However, in actual operation, this "consistency" is not absolutely identical, but allows for conformity within a certain tolerance range, because industrial site conditions inevitably have dynamic fluctuations. Without such a relatively strict screening, historical data that is not comparable to the current state may be introduced, leading to subsequent analytical biases or even distortions. Therefore, setting this condition is necessary and reasonable.

[0053] The valve dynamic health index is a comprehensive indicator used to characterize the current operating status of a target overflow return water regulating valve. This index reflects the valve's health level under current operating conditions and can be directly applied to adaptive control of valve opening adjustment range, adjustment frequency, or action speed. It can also be used to trigger valve maintenance prompts, thereby extending valve life while ensuring stable delivery. It should be noted that this valve dynamic health index is an indicator that can be generated by existing technical models and belongs to existing technology. For example, in the fields of process industrial automation, pipeline fluid transport control, and intelligent operation and maintenance, similar health indices have been generated using multi-parameter modeling methods such as vibration, pressure, and flow rate, and are used for predictive maintenance and adaptive control. Therefore, the acquisition of this index itself falls within the scope of existing technology. The improvement of this invention lies in modifying and optimizing the index by combining specific sedimentation-scouring environments and their dynamic effects.

[0054] The core technical problem this invention aims to solve is that while existing technologies, in generating valve dynamic health indices, have fully considered the impact of vibration signals from upstream machinery, they only treat this vibration as a general disturbance factor and do not deeply analyze the fluid dynamic fluctuations caused by periodic vibrations. In slurry return water systems, this periodic vibration causes slurry particles near the valve to tend to deposit at low speeds and be washed away at high speeds, thus forming an alternating deposition-washing effect. This effect directly affects the local area of ​​the valve, potentially leading to increased wear and operational deterioration.

[0055] However, current technologies cannot identify the specific impact of this deposition-scouring alternation effect on valve operating conditions. On the one hand, existing models fail to clearly determine at what intensity this alternation effect begins to cause substantial deterioration in valve health; on the other hand, they cannot quantify the degree of deterioration the valve is currently experiencing under the influence of this alternation effect. Because of this lack of identification and quantification, the valve dynamic health index generated by existing technologies is neither objective nor sufficient, failing to accurately reflect the true operating state of the valve and thus unable to provide reliable support for the dynamic adjustment and maintenance of valves.

[0056] Furthermore, the environmentally aware dynamic valve control method further includes the following steps:

[0057] Step S200: Extract the first local vibration signal of the slurry deposition-scouring alternation area corresponding to the target overflow return water regulating valve in the historical sample, and calculate the deposition-scouring alternation intensity index of the historical sample accordingly.

[0058] Specifically, Figure 2 A flowchart is shown for calculating the deposition-scour alternation intensity index of historical samples.

[0059] The process of extracting the first local vibration signal from the slurry deposition-scour alternation zone corresponding to the target overflow return water regulating valve in historical samples, and calculating the deposition-scour alternation intensity index of historical samples based on this signal, specifically includes the following steps:

[0060] Step S201: Analyze historical operation records to determine the slurry deposition-flushing alternation area most relevant to the target overflow return water regulating valve and close to the valve inlet or valve seat area;

[0061] Step S202: Based on the historical operation records, determine the first local vibration signal of the alternating slurry deposition-scouring region in each historical sample. The first local vibration signal includes vibration amplitude, vibration frequency, and spectral energy distribution.

[0062] Step S203: Calculate the deposition-scouring alternation intensity index for each historical sample based on the variation characteristics of the first local vibration signal.

[0063] The calculation of the deposition-scour alternation intensity index includes: normalizing the first local vibration signal of each historical sample for each time period, fusing the vibration amplitude, vibration frequency, and spectral energy distribution according to preset weights to obtain a comprehensive local vibration characteristic; based on the rate of change or cumulative and abrupt change detection of the comprehensive characteristic relative to the normal operating condition baseline, identifying deposition events with a rapid decrease and scour events with a rapid increase in the comprehensive characteristic; statistically analyzing the duration, amplitude exceeding the limit, and frequency of occurrence of the deposition and scour events, calculating the deposition intensity and scour intensity according to preset weights, and obtaining the deposition-scour alternation intensity index based on the weighted combination of the two.

[0064] In this embodiment of the invention, the selection of the alternating deposition-scouring region in step S201 is based on the hydrodynamic characteristics of the valve in the return water system. Specifically, near the valve inlet or valve seat, due to structural contraction and flow field disturbance, the slurry is more prone to uneven velocity distribution. Particles accumulate at low speeds and are washed away at high speeds, thus forming a typical deposition-scouring alternating phenomenon. Although this phenomenon usually does not directly affect the valve body, when it occurs continuously in the area near the valve, its disturbance will be indirectly transmitted to the valve structure through fluid loads, particle impacts, etc., having a long-term cumulative impact on the valve's operating state. Therefore, selecting this area as an observation point can provide a key reference for subsequent judgment of the valve's state.

[0065] In step S202, the first local vibration signal is acquired by a sensor pre-installed in the alternating deposition-scour region. The sensor is capable of detecting signal characteristics such as vibration amplitude, vibration frequency, and spectral energy distribution. Although this setup requires additional hardware investment and increases costs, by acquiring the dynamic response data of this local area, the actual occurrence characteristics of the deposition and scour process can be captured, thereby providing reliable data support for calculating the deposition-scour alternation intensity index.

[0066] In step S203, calculating the deposition-scouring alternation intensity index based on the variation characteristics of the first local vibration signal is of great significance. Through normalization, weighted fusion, baseline comparison, and abrupt change detection, not only can the original vibration signal be transformed into quantifiable event identification results (deposition events and scouring events), but also its duration, amplitude exceeding limits, and frequency of occurrence can be statistically analyzed, thus forming a quantitative characterization of deposition and scouring intensity. This index can intuitively reflect the strength and frequency of the deposition-scouring alternation effect of slurry in the vicinity of the valve over time, providing a measurable indicator for subsequent judgment of whether the valve's operating status is affected. It is understandable that this type of signal analysis method based on vibration characteristics belongs to the mature field of acoustic research and has been widely used in the fields of equipment monitoring and condition diagnosis; therefore, the calculation method has high reliability and feasibility.

[0067] Furthermore, in this embodiment of the invention, the deposition-scour alternation intensity index can be further calculated by combining differential pressure signals and flow rate signals. Differential pressure signals reflect the changing characteristics of fluid resistance over time, while flow rate signals reveal the fluctuation characteristics of the slurry as it passes through the valve and its adjacent area. The fusion of these signals with vibration signals makes the deposition-scour alternation intensity index more comprehensive, taking into account both the interaction between solid particles and the pipe wall / valve area, as well as the dynamic changes in the overall fluid transport characteristics, thereby improving the index's ability to reflect actual operating conditions.

[0068] Furthermore, the environmentally aware dynamic valve control method further includes the following steps:

[0069] Step S300: When it is determined that the deposition-scouring alternation intensity index of several historical samples continues to increase over time, the second local vibration signal of the valve designated area corresponding to the slurry deposition-scouring alternation area in the historical samples is monitored, and the valve scouring deterioration index is calculated accordingly to identify whether the valve scouring deterioration index has reached a critical point of significant enhancement over time.

[0070] The second local vibration signal includes the vibration amplitude, vibration acceleration, and high-frequency component energy of the specified area of ​​the valve;

[0071] The calculation process of the valve erosion deterioration index includes: within the period of each historical sample, analyzing the degree of deviation of the vibration amplitude, vibration acceleration and high-frequency component energy from the normal operating condition baseline, the degree of deviation including abnormal increase in amplitude, increase in the rate of change of acceleration and accumulation of high-frequency component energy; and fusing the degree of deviation according to a preset weight to obtain the valve erosion deterioration index that characterizes the overall periodic deterioration of the historical sample.

[0072] In this embodiment of the invention, step S300 is of core significance, its purpose being to verify whether an increase in the deposition-scouring alternation intensity index of several historical samples over time would lead to abnormal vibration feedback in the valve body at a certain threshold. This process reveals that the deposition-scouring alternation effect is not merely a hydrodynamic phenomenon occurring in the vicinity of the valve, but also substantially transmitted to the valve body and causes scouring deterioration after exceeding a certain intensity. Through this verification, the present invention clarifies a core technical problem that the prior art has failed to solve: the threshold-inducing effect and the quantification of the degree of deterioration of the deposition-scouring alternation effect are ignored in the valve health value generation process.

[0073] The second local vibration signal is acquired by independent sensors deployed in a designated area of ​​the valve. The designated area is selected based on the part of the valve most sensitive to scouring, typically the inner wall of the valve near the flow channel inlet or the area adjacent to the valve seat. These locations reflect the structural response caused by slurry impact and sediment release while avoiding excessive interference from external mechanical vibrations, thus best reflecting the signal characteristics of localized valve deterioration. To achieve this function, a high-sensitivity vibration sensor or acoustic sensor needs to be independently installed in this designated area to capture vibration amplitude, vibration acceleration, and high-frequency component energy in real time. Although this increases hardware investment, it is a necessary condition for obtaining accurate data and supporting the implementation of this invention.

[0074] The calculation of the valve erosion deterioration index relies on mature acoustic and vibration signal processing technologies. Within each historical sample period, the acquired second local vibration signal is first preprocessed, including denoising, normalization, and time series segmentation. Then, the signal characteristics are compared with the normal operating condition baseline to identify the degree of deviation, specifically manifested as an abnormal increase in vibration amplitude, an increased rate of change in vibration acceleration, and the continuous accumulation of high-frequency component energy. These deviations are converted into numerical indicators through feature extraction and quantitative statistics. Finally, the various deviation indicators are fused according to preset weights to obtain the valve erosion deterioration index, which characterizes the overall deterioration degree of the historical sample over the period. Since acoustic and vibration feature extraction and weighted fusion methods are widely used in equipment diagnostics and structural health monitoring, this calculation method is a mature and reliable technical approach.

[0075] In the identification process, the so-called "stable state" refers to the valve erosion deterioration index remaining near the baseline over multiple consecutive periods, with only minor fluctuations and no excessive growth. "Significant enhancement," on the other hand, refers to a sustained and trending rapid increase in the valve erosion deterioration index within a certain time window, with both its magnitude and rate of change exceeding a preset threshold. The emergence of the critical point from a stable state to significant enhancement signifies that the valve has transitioned from a normal operating stage, resistant to the alternating effects of deposition and erosion, to an abnormal stage affected by erosion deterioration. Accurately identifying this critical point not only reveals the turning point in the valve's health status but also provides a direct basis for subsequent correction of the valve's dynamic health index, ensuring the objectivity and relevance of the correction method proposed in this invention.

[0076] Furthermore, if a critical point is determined to exist, obtaining its corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index, and generating a correction factor based on the difference between the two to correct the current valve dynamic health index, also includes the following steps:

[0077] Step S400: If a critical point is determined to exist, obtain its corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index, and generate a correction factor based on the difference between the two to correct the current valve dynamic health index.

[0078] Specifically, Figure 3 The flowchart for correcting the current valve dynamic health index is shown.

[0079] If a critical point is identified, the corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index are obtained. A correction factor is then generated based on the difference between the two to correct the current valve dynamic health index. This process specifically includes the following steps:

[0080] Step S401: When the valve scour deterioration index corresponding to a number of historical samples changes from a stable state to a significantly enhanced state over time, the deposition-scour alternation intensity index of the historical sample corresponding to the critical point is obtained.

[0081] Step S402: Calculate the current sedimentation-scouring alternation intensity index of the target overflow return water regulating valve, and generate a correction factor based on the deviation between the current sedimentation-scouring alternation intensity index and the critical point.

[0082] Step S403: Obtain the preset control correction amplitude coefficient and combine it with the correction factor to jointly correct the current valve dynamic health index, thereby obtaining the optimized current valve dynamic health index.

[0083] Step S404: Apply the optimized current valve dynamic health index to adjust the opening adjustment range, adjustment frequency or action speed of the target overflow return water regulating valve, and / or trigger valve maintenance prompts.

[0084] In this embodiment of the invention, the deviation between the historical deposition-scour alternation intensity index corresponding to the critical point and the current deposition-scour alternation intensity index is selected as the source of the correction factor because the critical point marks the transition of the valve from a stage where it can withstand the deposition-scour alternation effect to a deterioration stage, serving as a key dividing point. By comparing the difference between the current state and this dividing point, the actual deviation of the valve under the alternation effect can be intuitively reflected, thus providing a physically meaningful quantitative basis for the correction of the health index. The advantage of this approach is that it can link environmental disturbances with the valve's own state, making the results of the corrected dynamic health index of the valve more scientific and objective, effectively addressing the core problem of the non-objective and insufficient generation of health values ​​in existing technologies.

[0085] The control correction amplitude coefficient is derived from a preset value during system design and is usually determined based on a large amount of experimental data or simulation results. It reflects the weighting effect of the correction factor in the correction of the health index. Its significance lies in providing flexible adjustment capabilities for different application scenarios and valve types, avoiding over-correction that could affect the stability of the original health index, and promptly reflecting deterioration trends when the deposition-flushing alternation effect is significant.

[0086] In step S404, the optimized valve dynamic health index not only exists as a status indicator but is also directly applied to the dynamic regulation and control of the valve. Specifically, when the optimized health index is low, the system can automatically reduce the valve opening adjustment range to reduce the mechanical impact of the valve in a single adjustment; at the same time, it can also reduce the adjustment frequency to avoid further wear caused by frequent actions; and a gentler response mode can be set for the valve's action speed to extend its lifespan. When the health index falls below a preset threshold, the system will also trigger a valve maintenance prompt, reminding maintenance personnel to perform inspection, replacement, or enhanced lubrication protection. These measures combined can minimize valve deterioration while ensuring the delivery function.

[0087] In this embodiment of the invention, the process of generating the correction factor includes the following steps.

[0088] First, the difference between the current deposition-scour alternation intensity index and the critical point deposition-scour alternation intensity index is calculated. Second, this difference is divided by the critical point index to obtain the deviation range, thus standardizing the data under different operating conditions. Third, this deviation range is used as a correction factor and multiplied by the control correction range coefficient to obtain the final correction parameter. Finally, the current valve dynamic health index is multiplied by one and the final correction parameter is subtracted to obtain the optimized valve dynamic health index. In this way, the correction factor reflects the deteriorating effect of the alternation effect on valve health, and the correction process of the health index maintains continuity while highlighting the deteriorating trend.

[0089] In one specific embodiment, assuming the critical point of a historical sample corresponds to a deposition-scour alternation intensity index of 120, and the deposition-scour alternation intensity index calculated during current operation is 180, the difference is 60. Dividing this difference by the critical point value yields a deviation amplitude (correction factor) of 0.5. Assuming the control correction amplitude coefficient is preset to 0.25, the final correction parameter is 0.5 multiplied by 0.25, resulting in 0.125. The optimized health index is equal to the original health index multiplied by 1 minus 0.125. If the current dynamic health index of the valve is 80, the corrected optimized health index is 70. At this time, the system will automatically reduce the valve opening adjustment range and appropriately decrease the adjustment frequency based on the decrease in the health index, and trigger a maintenance prompt, reminding maintenance personnel to inspect the valve at an appropriate time.

[0090] The above calculation method is a linear correction method based on relative deviation, which is simple and easy to implement in engineering. In addition to this method, other methods can be used, such as introducing an exponential function to nonlinearly amplify the deviation amplitude, or considering the slow-release effect of the valve under long-term operation through a time decay function. Fuzzy logic methods combined with multi-parameter weights can also be used for dynamic correction to enhance adaptability.

[0091] The overall beneficial effect of this invention lies in its first-ever combination of the deposition-erosion alternation intensity index and the valve erosion deterioration index to identify the valve's critical point. Furthermore, it uses the deviation magnitude to correct the valve's dynamic health index, enabling the health index to more accurately reflect the valve's operating status under complex environmental disturbances. This not only improves the scientific rigor and precision of valve control but also extends valve lifespan, reduces maintenance costs, and avoids systemic risks caused by valve failure. This technical solution has broad application prospects in fields such as slurry transportation, mineral processing and metallurgy, and chemical fluid control, and is particularly suitable for industrial scenarios requiring long-term stable operation and where valve maintenance is difficult or costly.

[0092] Furthermore, Figure 4 An application architecture diagram of the system provided in an embodiment of the present invention is shown.

[0093] In another preferred embodiment of the present invention, a dynamic valve control system based on environmental perception includes:

[0094] The historical data processing module 100 is used to obtain the historical operation records of the return water system to which the target overflow return water regulating valve belongs, and to select a number of historical samples that are consistent with the current operating background and upstream mechanical vibration, and to obtain the current valve dynamic health index generated for the target overflow return water regulating valve.

[0095] The phrase "consistent with the current operating background" means that the conveying medium in the historical sample's return water system matches the current operating status in terms of operating parameters such as slurry concentration, flow rate, material level, and pressure.

[0096] The phrase "consistent with upstream mechanical vibration" means that the vibration frequency, vibration amplitude, and periodic characteristics of the upstream crusher in historical samples are consistent with the current operating status of the upstream crusher.

[0097] Furthermore, the environmentally aware dynamic valve control system also includes:

[0098] The intensity index calculation module 200 is used to extract the first local vibration signal of the slurry deposition-scouring alternation area corresponding to the target overflow return water regulating valve in the historical sample, and calculate the deposition-scouring alternation intensity index of the historical sample accordingly.

[0099] Specifically, Figure 5 The diagram shows the structural block diagram of the intensity index calculation module 200 in the system provided in the embodiment of the present invention.

[0100] In a preferred embodiment of the present invention, the intensity index calculation module 200 specifically includes:

[0101] The region determination unit 201 is used to analyze historical operation records and determine the alternating slurry deposition-flushing region that is most relevant to the target overflow return water regulating valve and is close to the valve inlet or valve seat area.

[0102] Signal acquisition unit 202 is used to determine a first local vibration signal in the alternating slurry deposition-scouring region of each historical sample based on the historical operation record. The first local vibration signal includes vibration amplitude, vibration frequency and spectral energy distribution.

[0103] The index calculation unit 203 is used to calculate the deposition-scour alternation intensity index of each historical sample based on the variation characteristics of the first local vibration signal.

[0104] The calculation of the deposition-scour alternation intensity index includes: normalizing the first local vibration signal of each historical sample for each time period, fusing the vibration amplitude, vibration frequency, and spectral energy distribution according to preset weights to obtain a comprehensive local vibration characteristic; based on the rate of change or cumulative and abrupt change detection of the comprehensive characteristic relative to the normal operating condition baseline, identifying deposition events with a rapid decrease and scour events with a rapid increase in the comprehensive characteristic; statistically analyzing the duration, amplitude exceeding the limit, and frequency of occurrence of the deposition and scour events, calculating the deposition intensity and scour intensity according to preset weights, and obtaining the deposition-scour alternation intensity index based on the weighted combination of the two.

[0105] Furthermore, the environmentally aware dynamic valve control system also includes:

[0106] The deterioration index calculation module 300 is used to monitor the second local vibration signal of the valve designated area corresponding to the slurry deposition-scouring alternation area in the historical samples when the deposition-scouring alternation intensity index of several historical samples continues to increase over time, and calculate the valve scouring deterioration index accordingly, and identify whether the valve scouring deterioration index has reached a critical point where it has changed from a stable state to a significant increase over time.

[0107] Furthermore, the environmentally aware dynamic valve control system also includes:

[0108] The correction module 400 is used to obtain the corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index if a critical point is determined to exist, and to generate a correction factor based on the difference between the two to correct the current valve dynamic health index.

[0109] It should be understood that although the steps in the flowcharts of the various embodiments of the present invention are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the various embodiments may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0110] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic valve control method based on environmental perception, characterized in that, The method includes: Obtain the historical operation records of the return water system to which the target overflow return water regulating valve belongs, and select several historical samples that are consistent with the current operating background and upstream mechanical vibration to obtain the current valve dynamic health index generated for the target overflow return water regulating valve; Extract the first local vibration signal of the slurry deposition-scouring alternation area corresponding to the target overflow return water regulating valve in the historical sample, and calculate the deposition-scouring alternation intensity index of the historical sample accordingly; Given that the deposition-scouring alternation intensity index of several historical samples continues to increase over time, the second local vibration signal of the valve designated area corresponding to the slurry deposition-scouring alternation area in the historical samples is monitored, and the valve scouring deterioration index is calculated accordingly to identify whether the valve scouring deterioration index has reached a critical point of significant enhancement over time from a stable state. If a critical point is identified, obtain its corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index, and generate a correction factor based on the difference between the two to correct the current valve dynamic health index.

2. The dynamic valve control method based on environmental perception according to claim 1, characterized in that, The phrase "consistent with the current operating background" means that the conveying medium in the historical sample's return water system matches the current operating status in terms of operating parameters such as slurry concentration, flow rate, material level, and pressure. The phrase "consistent with upstream mechanical vibration" means that the vibration frequency, vibration amplitude, and periodic characteristics of the upstream crusher in historical samples are consistent with the current operating status of the upstream crusher.

3. The dynamic valve control method based on environmental perception according to claim 1, characterized in that, The steps for extracting the first local vibration signal of the slurry deposition-scour alternation region corresponding to the target overflow return water regulating valve in historical samples, and calculating the deposition-scour alternation intensity index of historical samples based on this signal, include: Analyze historical operation records to determine the slurry deposition-flushing alternation area most relevant to the target overflow return water regulating valve and close to the valve inlet or valve seat area; Based on the historical operation records, a first local vibration signal is determined in the alternating region of slurry deposition-scouring in each historical sample. The first local vibration signal includes vibration amplitude, vibration frequency, and spectral energy distribution. The deposition-scouring alternation intensity index for each historical sample was calculated based on the variation characteristics of the first local vibration signal.

4. The dynamic valve control method based on environmental perception according to claim 3, characterized in that, The calculation of the deposition-scour alternation intensity index includes: normalizing the first local vibration signal of each time period for each historical sample, fusing the vibration amplitude, vibration frequency, and spectral energy distribution according to preset weights to obtain a comprehensive local vibration characteristic; based on the rate of change or accumulation and abrupt change detection of the comprehensive characteristic relative to the normal operating baseline, identifying deposition events with a rapid decrease and scour events with a rapid increase in the comprehensive characteristic; statistically analyzing the duration, amplitude exceeding the limit, and frequency of occurrence of the deposition and scour events, calculating the deposition intensity and scour intensity according to preset weights, and obtaining the deposition-scour alternation intensity index based on the weighted combination of the two.

5. The dynamic valve control method based on environmental perception according to claim 1, characterized in that, The second local vibration signal includes the vibration amplitude, vibration acceleration, and high-frequency component energy of the specified area of ​​the valve; The calculation process of the valve erosion deterioration index includes: within the period of each historical sample, analyzing the degree of deviation of the vibration amplitude, vibration acceleration and high-frequency component energy from the normal operating condition baseline, the degree of deviation including abnormal increase in amplitude, increase in the rate of change of acceleration and accumulation of high-frequency component energy; and fusing the degree of deviation according to a preset weight to obtain the valve erosion deterioration index that characterizes the overall periodic deterioration of the historical sample.

6. The dynamic valve control method based on environmental perception according to claim 4, characterized in that, If a critical point is identified, the steps to obtain its corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index, and to generate a correction factor based on the difference between the two to correct the current valve dynamic health index, include: When the critical point at which the valve scour deterioration index corresponding to a number of historical samples changes from a stable state to a significantly enhanced state over time is determined, the deposition-scour alternation intensity index of the historical samples corresponding to the critical point is obtained. Calculate the current sedimentation-scouring alternation intensity index of the target overflow return water regulating valve, and generate a correction factor based on the deviation between the current sedimentation-scouring alternation intensity index and the critical point. Obtain the preset control correction amplitude coefficient and combine it with the correction factor to jointly correct the current valve dynamic health index, thereby obtaining an optimized current valve dynamic health index; The optimized current valve dynamic health index is applied to adjust the opening range, adjustment frequency, or action speed of the target overflow return water regulating valve, and / or trigger valve maintenance prompts.

7. A dynamic valve control system based on environmental perception, characterized in that, The system includes: The historical data processing module is used to obtain the historical operation records of the return water system to which the target overflow return water regulating valve belongs, and to select a number of historical samples that are consistent with the current operating background and upstream mechanical vibration, and to obtain the current valve dynamic health index generated for the target overflow return water regulating valve. The intensity index calculation module is used to extract the first local vibration signal of the slurry deposition-scouring alternation area corresponding to the target overflow return water regulating valve in the historical sample, and calculate the deposition-scouring alternation intensity index of the historical sample accordingly. The deterioration index calculation module is used to monitor the second local vibration signal of the valve designated area corresponding to the slurry deposition-scouring alternation area in the historical samples when the deposition-scouring alternation intensity index of several historical samples continues to increase over time, and calculate the valve scouring deterioration index accordingly, and identify whether the valve scouring deterioration index has reached a critical point of significant enhancement over time from a stable state. The correction module is used to obtain the corresponding deposition-scour alternation intensity index and the current deposition-scour alternation intensity index if a critical point is determined to exist, and to generate a correction factor based on the difference between the two to correct the current valve dynamic health index.

8. The dynamic valve control system based on environmental perception according to claim 7, characterized in that, The phrase "consistent with the current operating background" means that the conveying medium in the historical sample's return water system matches the current operating status in terms of operating parameters such as slurry concentration, flow rate, material level, and pressure. The phrase "consistent with upstream mechanical vibration" means that the vibration frequency, vibration amplitude, and periodic characteristics of the upstream crusher in historical samples are consistent with the current operating status of the upstream crusher.

9. The dynamic valve control system based on environmental perception according to claim 8, characterized in that, The intensity index calculation module specifically includes: The region determination unit is used to analyze historical operation records and determine the alternating slurry deposition-flushing region that is most relevant to the target overflow return water regulating valve and is close to the valve inlet or valve seat area. The signal acquisition unit is used to determine the first local vibration signal of the alternating slurry deposition-scouring region in each historical sample based on the historical operation record. The first local vibration signal includes vibration amplitude, vibration frequency and spectral energy distribution. The index calculation unit is used to calculate the deposition-scour alternation intensity index for each historical sample based on the variation characteristics of the first local vibration signal.

10. The dynamic valve control system based on environmental perception according to claim 9, characterized in that, The calculation of the deposition-scour alternation intensity index includes: normalizing the first local vibration signal of each time period for each historical sample, fusing the vibration amplitude, vibration frequency, and spectral energy distribution according to preset weights to obtain a comprehensive local vibration characteristic; based on the rate of change or accumulation and abrupt change detection of the comprehensive characteristic relative to the normal operating baseline, identifying deposition events with a rapid decrease and scour events with a rapid increase in the comprehensive characteristic; statistically analyzing the duration, amplitude exceeding the limit, and frequency of occurrence of the deposition and scour events, calculating the deposition intensity and scour intensity according to preset weights, and obtaining the deposition-scour alternation intensity index based on the weighted combination of the two.

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