Equipment facility operation and maintenance management system and method based on Internet of Things

Abstract

The invention discloses an equipment and facility operation and maintenance management system and method based on the Internet of Things, and relates to the technical field of equipment management. A control end classifies all valves according to health states, performs full-open adjustment on the valves which do not support operation, and then performs primary adjustment on the opening degree of each valve which supports operation according to the health states; the method comprises the following steps: acquiring a hydraulic value which needs to be output by hydraulic equipment, performing secondary adjustment on the opening degrees of all valves supporting operation by combining a valve classification result, performing weighted calculation on the health state data of all the valves by combining the relative importance of the valves in the hydraulic equipment after regularly acquiring the health state data of all the valves, and acquiring a management value of the hydraulic equipment. And judging whether the hydraulic equipment needs to be managed based on the management value. The management system adjusts the opening degree of the valve supporting operation twice, the hydraulic flow can be controlled more accurately, and the operation efficiency and stability of the hydraulic equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment management, and in particular to an equipment facility operation and maintenance management system and method based on the Internet of Things. Background Art

[0002] The IoT-based hydraulic equipment operation and maintenance management system is mainly used for condition monitoring, predictive maintenance and remote management of hydraulic systems. The system uses sensors, data acquisition equipment and analysis algorithms to monitor the key parameters of hydraulic equipment in real time, and performs data analysis and fault warning through the IoT platform, thereby improving the reliability and production efficiency of hydraulic equipment.

[0003] The prior art has the following defects:

[0004] Valve control in traditional hydraulic systems usually relies on fixed preset values ​​or manual adjustments. During operation, the valve opening is generally adjusted based on a pre-defined valve operation plan rather than real-time monitoring and feedback adjustment. This method lacks flexibility and cannot dynamically adjust the valve opening according to the current health status of the valve or the real-time needs of the hydraulic equipment. When the valve is abnormal, it will lead to inaccurate hydraulic flow control and cannot ensure the stable operation of the hydraulic equipment.

[0005] Based on this, the present invention proposes an equipment and facility operation and maintenance management system and method based on the Internet of Things, which performs two opening adjustments on the valves that support operation, can more accurately control the hydraulic flow and improve the operating efficiency and stability of the hydraulic equipment. Summary of the invention

[0006] The purpose of the present invention is to provide an equipment facility operation and maintenance management system and method based on the Internet of Things to address the deficiencies in the background technology.

[0007] In order to achieve the above object, the present invention provides the following technical solution: an equipment and facility operation and maintenance management method based on the Internet of Things, the management method comprising the following steps:

[0008] The management system obtains the number of valves in the hydraulic equipment and the location information of each valve. During the operation of the hydraulic equipment, the sensor equipment collects the opening and health status of each valve in real time. The sensor equipment sends the opening and health status of each valve to the control end based on the Internet of Things.

[0009] The control end first classifies all valves according to their health status, fully opens the valves that do not support operation, and then adjusts the opening of each valve that supports operation according to the health status to obtain the hydraulic value that the hydraulic equipment needs to output, and then adjusts the opening of all valves that support operation for the second time based on the valve classification results;

[0010] After regularly acquiring the health status data of all valves, the health status data of all valves are weighted and calculated based on the relative importance of the valves in the hydraulic equipment to obtain the management value of the hydraulic equipment, and based on the management value, it is determined whether the hydraulic equipment needs to be managed.

[0011] In a preferred embodiment, during the operation of the hydraulic equipment, the opening and health status of each valve are collected in real time by a sensing device, including the following steps:

[0012] The flow impact index, stagnation index and expansion index of each valve core are collected in real time through sensing equipment, and the flow impact index, stagnation index and expansion index are normalized so that the value range of the processed flow impact index, stagnation index and expansion index is mapped to [0,1], and the normalized value of the flow impact index, the normalized value of the stagnation index and the normalized value of the expansion index are obtained. The normalized value of the flow impact index, the normalized value of the stagnation index and the normalized value of the expansion index are summed to obtain the abnormal value of the valve core. The larger the abnormal value, the more abnormal the valve core is, that is, the worse the health status of the valve is.

[0013] In a preferred embodiment, the control end classifies all valves according to their health status and fully opens valves that do not support operation, including the following steps:

[0014] After obtaining the abnormal value of each valve, the abnormal value of the valve is compared with a preset first abnormal threshold and a second abnormal threshold. The first abnormal threshold is used to determine whether the valve is abnormal, and the second abnormal threshold is used to determine the severity of the abnormality of the valve;

[0015] If the abnormal value is less than or equal to the first abnormal threshold, it is determined that the valve has no abnormality and the valve is classified into a non-abnormal set;

[0016] If the abnormal value is greater than the first abnormal threshold and the abnormal value is less than or equal to the second abnormal threshold, it is determined that the valve has a slight abnormality and the valve is classified into a slight abnormality set;

[0017] If the abnormal value is greater than the second abnormal threshold, it is determined that the valve has a serious abnormality, and the valve is classified into a serious abnormality set. The valves classified into the serious abnormality set are valves that do not support operation, and the valves that do not support operation are fully opened.

[0018] In a preferred embodiment, adjusting the opening of each valve supporting the operation once according to the health status includes the following steps:

[0019] Get the valve information in the non-abnormal set and the slightly abnormal set. The valves in the non-abnormal set do not need to be adjusted once. The valve opening in the slightly abnormal set is adjusted once according to the abnormal value. The adjustment expression is: kd one=kd zero (1+ln(ycz+1)), where kd one is the valve opening after one adjustment, kd zero is the initial valve opening, and ycz is the abnormal value.

[0020] In a preferred embodiment, the hydraulic pressure value that the hydraulic device needs to output is obtained, and the opening of all valves supporting the operation is secondary adjusted in combination with the valve classification result, including the following steps:

[0021] After all valve openings in the minor abnormality set have been adjusted once, the hydraulic pressure value that the hydraulic equipment needs to output is obtained, and the openings of all valves in the normal abnormality set are adjusted again;

[0022] The flow output after adjusting the valve for a minor abnormality is expressed by the following formula:

[0023] Where, L light is the total flow of minor anomalies, n light is the number of valves in the slightly abnormal set, f(C light,i ) is the function between the flow rate and the opening of the ith valve in the slight anomaly set;

[0024] After the valves in the slightly abnormal set have been adjusted, calculate the opening required for the valves in the normal set. The total flow after adjustment should satisfy the following equation: L normal =P desired -L light , where P desired is the total flow after adjustment, L light is the total flow of slight abnormality, L normal The total flow of the normal set is obtained by evenly dividing the total adjustment amount to each valve in the normal set: Where n normal is the number of valves in the normal set, L normal is the total flow of the set without abnormality, C normal The flow rate of each valve in the non-abnormal set is calculated based on the function between the flow rate and the opening degree to obtain the opening degree of each valve in the non-abnormal set.

[0025] In a preferred embodiment, the calculation expression of the flow impact index is: Where Q is the flow impact index, C leak is the leakage flow constant, ΔP is the pressure difference between the two ends of the valve, μ is the dynamic viscosity of the liquid, d worn is the current wear size of the valve core, d new is the size of the new valve core.

[0026] In a preferred embodiment, the calculation expression of the hysteresis index is: Where K is the stuck index, S max is the maximum flow rate of the valve, f block is the current stuck area of ​​the valve core, f max is the maximum stuck area, τ is the time parameter, indicating the time characteristics of stuck recovery, and t is the stuck duration;

[0027] The calculation expression of the expansion index is: U=Q0·(1-β·(T(t)-T0)), where U is the expansion index, Q0 is the initial flow rate, β is the thermal expansion coefficient of the valve core, T(t) is the current temperature, and T0 is the initial temperature.

[0028] Equipment and facility operation and maintenance management system based on the Internet of Things, including data collection module, adjustment module, and management module;

[0029] Data collection module: obtains the number of valves in the hydraulic equipment and the location information of each valve. During the operation of the hydraulic equipment, the opening and health status of each valve are collected in real time through the sensor equipment;

[0030] Adjustment module: Classify all valves according to health status, fully open the valves that do not support operation, and then adjust the opening of each valve that supports operation according to the health status to obtain the hydraulic value that the hydraulic equipment needs to output, and adjust the opening of all valves that support operation for the second time based on the valve classification results;

[0031] Management module: After regularly acquiring the health status data of all valves, the health status data of all valves are weighted and calculated based on the relative importance of the valves in the hydraulic equipment to obtain the management value of the hydraulic equipment. Based on the management value, it is determined whether the hydraulic equipment needs to be managed.

[0032] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0033] The present invention classifies all valves according to the health status through the control end, fully opens the valves that do not support operation, and then adjusts the opening of each valve that supports operation according to the health status, obtains the hydraulic value that the hydraulic equipment needs to output, and adjusts the opening of all valves that support operation for a second time in combination with the valve classification result. After regularly obtaining the health status data of all valves, the health status data of all valves are weighted and calculated in combination with the relative importance of the valves in the hydraulic equipment to obtain the management value of the hydraulic equipment, and determines whether the hydraulic equipment needs to be managed based on the management value. The management system adjusts the opening of the valves that support operation twice, which can more accurately control the hydraulic flow and improve the operating efficiency and stability of the hydraulic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0035] Figure 1 The present invention is a flow chart of the method. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1 As shown, the equipment facility operation and maintenance management method based on the Internet of Things described in this embodiment includes the following steps:

[0038] The management system obtains the number of valves in the hydraulic equipment and the location information of each valve. During the operation of the hydraulic equipment, the opening and health status of each valve are collected in real time through the sensor equipment. The sensor equipment sends the opening and health status of each valve to the control end based on the Internet of Things. The control end first classifies all valves according to the health status, fully opens the valves that do not support operation, and then adjusts the opening of each valve that supports operation according to the health status to obtain the hydraulic value that the hydraulic equipment needs to output. Combined with the valve classification results, the opening of all valves that support operation is adjusted for the second time. After regularly obtaining the health status data of all valves, combined with the relative importance of the valves in the hydraulic equipment, the health status data of all valves are weighted and calculated to obtain the management value of the hydraulic equipment, and based on the management value, it is determined whether the hydraulic equipment needs to be managed.

[0039] This application first classifies all valves according to their health status through the control end, fully opens the valves that do not support operation, and then adjusts the opening of each valve that supports operation according to the health status to obtain the hydraulic value that the hydraulic equipment needs to output. Combined with the valve classification results, the opening of all valves that support operation is adjusted twice. After regularly obtaining the health status data of all valves, combined with the relative importance of the valves in the hydraulic equipment, the health status data of all valves are weighted and calculated to obtain the management value of the hydraulic equipment, and based on the management value, it is determined whether the hydraulic equipment needs to be managed. The management system adjusts the opening of the valves that support operation twice, which can more accurately control the hydraulic flow and improve the operating efficiency and stability of the hydraulic equipment.

[0040] Embodiment 2: The management system obtains the number of valves in the hydraulic equipment and the position information of each valve, including the following steps:

[0041] The management system establishes a communication connection with the sensor network of the hydraulic equipment. The sensor network covers all valves in the equipment and can collect valve status data in real time.

[0042] Identify all valves in the hydraulic equipment. The system will identify each valve’s unique ID, valve quantity, and location information for each valve in the hydraulic equipment.

[0043] The system obtains basic information about each valve from the hydraulic equipment through the communication protocol, including valve type, design parameters, and location information. The location information may include the valve installation position (such as horizontal and vertical coordinates or height position) and the relationship between adjacent components (such as the connection with the hydraulic pump and pipeline).

[0044] The main function of a hydraulic device is to control the hydraulic flow through a series of valves in series. Each valve in the series relationship plays a role in gradually refining and accurately controlling the regulation of the hydraulic flow. This design allows the device to adjust the output flow through multi-level control, thereby ensuring the stable operation of the equipment.

[0045] The management system starts and establishes a communication connection with the sensor network of the hydraulic equipment. The network covers all the series valves in the equipment and can collect the status data of each valve, such as opening, temperature, pressure, etc.

[0046] The system automatically scans the sensor nodes to ensure information collection of all series-connected valves in the equipment.

[0047] The management system identifies the valves in the hydraulic equipment that are connected in series in sequence, including each valve's unique ID, the number of valves, the specific sequence, and the specific position in the series.

[0048] For example, the system recognizes that the device contains five valves in series, numbered "V001" to "V005", and the valves are arranged sequentially in the hydraulic flow path.

[0049] The system obtains the design parameters, type and location information of each valve through the communication protocol to ensure that the load capacity of each valve can be accurately matched when controlling the flow. For example:

[0050] "V001": Inlet valve, with design parameters of "maximum flow rate 15L / min, pressure resistance 220bar", located at the inlet of the pipeline.

[0051] “V002”: The first-level control valve, with design parameters of “maximum flow rate 12L / min, pressure resistance 200bar”, is located downstream of “V001” and connected in series with it.

[0052] "V003": The second-layer control valve, with design parameters of "maximum flow rate 10L / min, pressure resistance 180bar", located downstream of "V002", and so on.

[0053] During the operation of hydraulic equipment, the opening and health status of each valve are collected in real time through the sensor device. The sensor device sends the opening and health status of each valve to the control end based on the Internet of Things, including the following steps:

[0054] The flow impact index, stagnation index and expansion index of each valve core are collected in real time through sensing equipment, and the flow impact index, stagnation index and expansion index are normalized so that the value range of the processed flow impact index, stagnation index and expansion index is mapped to [0,1], and the normalized value of the flow impact index, the normalized value of the stagnation index and the normalized value of the expansion index are obtained. The normalized value of the flow impact index, the normalized value of the stagnation index and the normalized value of the expansion index are summed to obtain the abnormal value of the valve core. The larger the abnormal value, the more abnormal the valve core is, that is, the worse the health status of the valve is.

[0055] The calculation expression of the traffic impact index is: Where Q is the flow impact index, C leak is the leakage flow constant, which depends on the design and working conditions of the hydraulic system, ΔP is the pressure difference across the valve, μ is the dynamic viscosity of the liquid, d worn is the current wear size of the valve core, d new is the size of the new valve core.

[0056] The calculation expression of the stuck index is: Where K is the stuck index, S max is the maximum flow rate of the valve, f block is the current stuck area of ​​the valve core, f maxis the maximum stuck area, τ is the time parameter, indicating the time characteristic of stuck recovery, and t is the stuck duration.

[0057] The calculation expression of the expansion index is: U=Q0·(1-β·(T(t)-T0)), where U is the expansion index, Q0 is the initial flow rate, β is the thermal expansion coefficient of the valve core, T(t) is the current temperature, and T0 is the initial temperature.

[0058] The valve core material will expand due to the temperature rise during operation. The fit between the valve core and the valve body may become inappropriate, resulting in a decrease in sealing performance, which affects the precise control of the flow. If the flow increases, it means that the fit clearance between the valve core and the valve body becomes larger, the leakage flow of the hydraulic oil may increase, and the control accuracy will decrease.

[0059] When the expansion index increases, it indicates that the sealing performance and control accuracy of the valve core have decreased, which is a typical manifestation of valve core abnormality. Under normal circumstances, the expansion of the valve core should be effectively controlled to avoid abnormal fluctuations in flow.

[0060] The stuck valve core will lead to poor fluid flow and limited movement between the valve core and the valve body, which may increase the resistance of the fluid flow and eventually cause abnormal changes in the flow rate. If the flow rate increases in the case of stuck valve core, it may be because of the partial sealing failure caused by the stuck valve core or some channels are forced to open, and the fluid flow is not effectively controlled when passing through.

[0061] The sticking usually manifests as a fluctuation or severe drop in flow rate because the movement of the valve core is blocked and the flow cannot be accurately regulated. Abnormal increase in flow rate is usually due to the hydraulic system's inability to maintain the required flow accuracy, which may cause further damage to the valve core, indicating that the system is in an abnormal working state.

[0062] During the operation of the hydraulic valve, leakage may occur as the valve core wears or the sealing performance decreases. The increase in the gap between the valve core and the valve body or the aging of the seal will lead to an increase in the leakage flow. This increase in leakage flow means that the hydraulic oil cannot be accurately controlled through the valve, the flow loss increases, and the system efficiency is reduced.

[0063] The increase of flow impact index indicates that the sealing of valve core is poor, which leads to leakage of hydraulic oil and decrease of system pressure. Under normal circumstances, the leakage flow of hydraulic system should be reduced as much as possible, because too much leakage flow will reduce equipment efficiency and increase energy consumption.

[0064] The control end classifies all valves according to their health status and fully opens valves that do not support operation, including the following steps:

[0065] After obtaining the abnormal value of each valve, the abnormal value of the valve is compared with a preset first abnormal threshold and a second abnormal threshold. The first abnormal threshold is used to determine whether the valve is abnormal, and the second abnormal threshold is used to determine the severity of the abnormality of the valve;

[0066] If the abnormal value is less than or equal to the first abnormal threshold, it is determined that the valve has no abnormality and the valve is classified into a non-abnormal set;

[0067] If the abnormal value is greater than the first abnormal threshold and the abnormal value is less than or equal to the second abnormal threshold, it is determined that the valve has a slight abnormality and the valve is classified into a slight abnormality set;

[0068] If the abnormal value is greater than the second abnormal threshold, it is determined that the valve has a serious abnormality, and the valve is classified into a serious abnormality set. The valves classified into the serious abnormality set are valves that do not support operation, and the valves that do not support operation are fully opened.

[0069] Valves classified as no abnormal set and slight abnormal set are valves that support operation.

[0070] Assume that a hydraulic device contains multiple valves (such as 5 valves: V1, V2, V3, V4, V5). The health status of each valve is monitored in real time by sensors, and the abnormal value of the valve is generated, so that the valve can be classified and adjusted.

[0071] Assume that the following abnormal values ​​of valves are obtained through sensor monitoring:

[0072] Outlier value of V1: 0.8;

[0073] Outlier value of V2: 1.5;

[0074] Outlier value of V3: 2.5;

[0075] Outlier value of V4: 0.3;

[0076] Outlier value of V5: 3.0;

[0077] Assume that the preset thresholds are as follows:

[0078] First abnormal threshold: 1.0;

[0079] Second abnormal threshold: 2.0;

[0080] The outliers for each valve are compared against these thresholds:

[0081] V1: The abnormal value is 0.8, which is less than or equal to the first abnormal threshold (1.0). It is determined that there is no abnormality in the valve, and V1 is classified into the non-abnormal set.

[0082] V2: abnormal value 1.5, which is greater than the first abnormal threshold but less than or equal to the second abnormal threshold (2.0), is judged to have a slight abnormality in the valve, and V2 is classified into the slight abnormality set.

[0083] V3: The abnormal value is 2.5, which is greater than the second abnormal threshold (2.0). It is determined that the valve has a serious abnormality and V3 is classified into the serious abnormality set.

[0084] V4: The abnormal value is 0.3, which is less than or equal to the first abnormal threshold (1.0). It is determined that there is no abnormality in the valve, and V4 is classified into the non-abnormal set.

[0085] V5: The abnormal value is 3.0, which is greater than the second abnormal threshold (2.0). It is determined that the valve has a serious abnormality and V5 is classified into the serious abnormality set.

[0086] No abnormal set: V1, V4 → These valves are working normally and do not need to be adjusted.

[0087] Minor abnormality set: V2 → Minor abnormality The valve can continue to operate, but may need appropriate adjustments (such as reducing the load, etc.) to ensure that it will not be further damaged.

[0088] Severe abnormality set: V3, V5 → These valves have serious abnormalities and cannot support operation. They need to be fully opened immediately (that is, the valve opening is adjusted to the maximum to ensure that the hydraulic oil can flow freely and avoid equipment damage by reducing the load), and repaired or replaced.

[0089] For the valves in the severe abnormality set (V3 and V5), fully open the valves:

[0090] V3 full-open adjustment: Due to serious abnormalities in V3, full-open adjustment is required to ensure smooth circulation of hydraulic oil and reduce the impact on other equipment.

[0091] V5 full-open adjustment: Similarly, the V5 valve also needs to be fully opened to ensure that the hydraulic equipment is not overloaded and to prevent equipment damage.

[0092] Adjust the opening of each valve that supports the operation based on the health status, including the following steps:

[0093] Get the valve information in the non-abnormal set and the slightly abnormal set. The valves in the non-abnormal set do not need to be adjusted once. The valve opening in the slightly abnormal set is adjusted once according to the abnormal value. The adjustment expression is: kd one =kd zero (1+ln(ycz+1)), where kd one is the valve opening after one adjustment, kd zerois the initial valve opening, ycz is the abnormal value, that is, the larger the abnormal value of the valve core, the more it is necessary to increase the valve opening. The specific reasons are as follows:

[0094] When the abnormal value of the valve core increases, it usually means that the valve core has problems such as sticking, wear or poor sealing, which may cause the valve core to be unable to move within the normal range, thus affecting the precise control of fluid flow. The specific manifestations are:

[0095] Stuck: When the valve core is stuck, the valve cannot freely adjust the flow. By increasing the valve opening, the effect of the stuck on the flow control can be minimized to ensure that the fluid can still flow smoothly.

[0096] Reduced sealing: If the sealing performance between the valve core and the valve body deteriorates, hydraulic oil may leak, resulting in unstable flow. Increasing the valve opening can help reduce flow loss and ensure that the hydraulic oil can flow freely, avoiding excessive pressure or impact on the system.

[0097] Abnormality of the valve core often leads to a decrease in flow or a decrease in flow control accuracy, such as leakage or blockage. In order to maintain the normal working state of the hydraulic system, it is necessary to increase the opening of the valve to compensate for the flow loss. Increasing the opening can ensure that sufficient fluid passes through the valve, ensuring that the system can continue to work normally and avoiding other system failures caused by insufficient flow.

[0098] In hydraulic systems, accurate flow control is crucial. Abnormal valve cores may cause uncontrollable fluctuations in flow. Increasing the valve opening is a temporary measure to ensure that the hydraulic fluid does not affect the operation of downstream equipment due to unstable valve control. By increasing the valve opening, the negative impact on the system can be reduced and the hydraulic system can be kept running smoothly.

[0099] When the valve core is abnormal, it may cause additional load on the hydraulic system (such as pressure loss due to poor sealing). By increasing the valve opening, the load on the system can be reduced, thereby reducing the pressure of the hydraulic oil in the valve components and preventing further damage to the valve components. Especially in the case of severe abnormalities, increasing the opening can help reduce the valve's stuck pressure and reduce the risk of equipment damage.

[0100] Abnormal valve cores may cause pressure imbalance, especially in hydraulic circuits. When the abnormal value of the valve core increases, the valve may not be able to accurately regulate pressure or flow. Increasing the opening can reduce the restriction of the valve on fluid flow and avoid system failure caused by excessive pressure or insufficient flow. By increasing the opening, maintaining a certain flow and pressure balance, it helps the hydraulic system continue to operate.

[0101] The larger the abnormal value of the valve core, the more it is necessary to increase the valve opening, because by increasing the opening:

[0102] Compensate for flow loss caused by valve core abnormality.

[0103] Reduce the impact of sticking or poor sealing and maintain fluid flow.

[0104] Reduce the load on the hydraulic system to avoid further equipment damage.

[0105] Maintain the stability of the hydraulic system and prevent pressure and flow imbalance.

[0106] This strategy is to resolve the negative impact of valve core abnormalities, ensure that the hydraulic system can run as smoothly as possible, delay equipment failures, and buy time for subsequent maintenance.

[0107] Obtain the hydraulic value that the hydraulic equipment needs to output, and perform secondary adjustment on the opening of all valves that support operation in combination with the valve classification results, including the following steps:

[0108] In the process of hydraulic equipment management, after the valve opening in the minor abnormality set is adjusted for the first time, the system needs to ensure that the hydraulic value output by the equipment is still within the expected range. At this time, the goal of performing a secondary adjustment for all valves in the normal abnormality set is to ensure that the overall hydraulic output of the system is not affected and can still meet the working requirements of the hydraulic equipment.

[0109] After all valve openings in the minor abnormality set have been adjusted once, the hydraulic value that the hydraulic equipment needs to output is obtained, and the openings of all valves in the normal abnormality set are adjusted again.

[0110] First, the system needs to obtain the hydraulic value that the hydraulic equipment currently needs to output. This hydraulic value is usually related to the load, working condition and operating conditions of the equipment. In some cases, it may be based on the preset operating requirements of the equipment or the target output calculated by the real-time control system.

[0111] After the first adjustment, the valves in the slight abnormality set will have their openings adjusted according to the degree of their abnormality, usually by full-opening adjustment or partial opening adjustment to compensate for the abnormality of the valve.

[0112] The flow output after adjusting the valve for a slight abnormality can be expressed by the following formula:

[0113] Where, L light is the total flow of minor anomalies, n light is the number of valves in the slightly abnormal set, f(C light,i ) is the function between the flow rate and opening of the ith valve in the slight anomaly set.

[0114] After the valves in the minor anomaly set have been adjusted, the system needs to calculate the opening required for the valves in the normal anomaly set. At this point, the total flow rate output by the hydraulic equipment should be consistent with the required hydraulic value. Therefore, the adjusted total flow rate should satisfy the following equation: L normal =P desired -L light , where P desired is the total flow after adjustment, L light is the total flow of slight abnormality, L normal is the total flow of the normal set. After conversion, the total adjustment amount is evenly distributed to each valve in the normal set: Where n normal is the number of valves in the normal set, L normal is the total flow of the set without abnormality, C normal The flow rate of each valve in the non-abnormal set is calculated by a function between the flow rate and the opening degree to obtain the opening degree of each valve in the non-abnormal set.

[0115] After regularly acquiring the health status data of all valves, combined with the relative importance of the valves in the hydraulic equipment, the health status data of all valves are weighted and calculated to obtain the management value of the hydraulic equipment. Based on the management value, it is determined whether the hydraulic equipment needs to be managed, including the following steps:

[0116] Regularly obtain health status data of the valve, the health status data includes abnormal values ​​obtained at multiple time points, and calculate the abnormal mean value of each valve based on the abnormal values ​​obtained at multiple time points;

[0117] Get the number of associated post-valve of each valve in the series state. For example, there are three valves A, B, and C, which are connected in series. The output of A is connected to the input of B, and the output of B is connected to the input of C. Then the number of associated post-valve of valve A is 3, the number of associated post-valve of valve B is 2, the number of associated post-valve of valve C is 1, and so on.

[0118] The influence weight of the valve is calculated based on the number of associated post-valve of the valve, the number of associated post-valve of all valves is summed up to obtain the total value, and the influence weight is obtained by dividing the number of associated post-valve by the total value;

[0119] The management value of the hydraulic equipment is obtained by weighted calculation of the abnormal mean and influence weight of all valves. The larger the management value, the more it indicates that the hydraulic equipment needs to be managed. If the management value is greater than the preset management threshold, the analysis shows that the hydraulic equipment needs to be managed. If the management value is less than or equal to the preset management threshold, the analysis shows that the hydraulic equipment does not need to be managed.

[0120] Embodiment 3: The equipment and facility operation and maintenance management system based on the Internet of Things described in this embodiment includes a data collection module, a regulation module, and a management module;

[0121] Data collection module: obtains the number of valves in the hydraulic equipment and the location information of each valve. During the operation of the hydraulic equipment, the opening and health status of each valve are collected in real time through the sensor equipment. The opening and health status of each valve are sent to the adjustment module, and the health status data is sent to the management module;

[0122] Adjustment module: classify all valves according to their health status, fully open the valves that do not support operation, and then adjust the opening of each valve that supports operation according to the health status to obtain the hydraulic value that the hydraulic equipment needs to output, and then adjust the opening of all valves that support operation for the second time based on the valve classification results;

[0123] Management module: After regularly acquiring the health status data of all valves, the health status data of all valves are weighted and calculated based on the relative importance of the valves in the hydraulic equipment to obtain the management value of the hydraulic equipment. Based on the management value, it is determined whether the hydraulic equipment needs to be managed.

[0124] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0125] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0126] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The equipment and facility operation and maintenance management method based on the Internet of Things is characterized by: The management method comprises the following steps: The management system obtains the number of valves in the hydraulic equipment and the location information of each valve. During the operation of the hydraulic equipment, the sensor equipment collects the opening and health status of each valve in real time. The sensor equipment sends the opening and health status of each valve to the control end based on the Internet of Things. The control end first classifies all valves according to their health status, fully opens the valves that do not support operation, and then adjusts the opening of each valve that supports operation according to the health status to obtain the hydraulic value that the hydraulic equipment needs to output, and then adjusts the opening of all valves that support operation for the second time based on the valve classification results; After regularly acquiring the health status data of all valves, the health status data of all valves are weighted and calculated based on the relative importance of the valves in the hydraulic equipment to obtain the management value of the hydraulic equipment, and based on the management value, it is determined whether the hydraulic equipment needs to be managed.

2. The equipment and facility operation and maintenance management method based on the Internet of Things according to claim 1 is characterized in that: During the operation of hydraulic equipment, the opening and health status of each valve are collected in real time through sensing equipment, including the following steps: The flow impact index, stagnation index and expansion index of each valve core are collected in real time through sensing equipment, and the flow impact index, stagnation index and expansion index are normalized so that the value range of the processed flow impact index, stagnation index and expansion index is mapped to [0,1], and the normalized value of the flow impact index, the normalized value of the stagnation index and the normalized value of the expansion index are obtained. The normalized value of the flow impact index, the normalized value of the stagnation index and the normalized value of the expansion index are summed to obtain the abnormal value of the valve core. The larger the abnormal value, the more abnormal the valve core is, that is, the worse the health status of the valve is.

3. The equipment and facility operation and maintenance management method based on the Internet of Things according to claim 2 is characterized in that: The control end classifies all valves according to their health status and fully opens valves that do not support operation, including the following steps: After obtaining the abnormal value of each valve, the abnormal value of the valve is compared with a preset first abnormal threshold and a second abnormal threshold. The first abnormal threshold is used to determine whether the valve is abnormal, and the second abnormal threshold is used to determine the severity of the abnormality of the valve; If the abnormal value is less than or equal to the first abnormal threshold, it is determined that the valve has no abnormality and the valve is classified into a non-abnormal set; If the abnormal value is greater than the first abnormal threshold and the abnormal value is less than or equal to the second abnormal threshold, it is determined that the valve has a slight abnormality and the valve is classified into a slight abnormality set; If the abnormal value is greater than the second abnormal threshold, it is determined that the valve has a serious abnormality, and the valve is classified into a serious abnormality set. The valves classified into the serious abnormality set are valves that do not support operation, and the valves that do not support operation are fully opened.

4. The equipment and facility operation and maintenance management method based on the Internet of Things according to claim 3 is characterized in that: Adjust the opening of each valve that supports the operation based on the health status, including the following steps: Get the valve information in the non-abnormal set and the slightly abnormal set. The valves in the non-abnormal set do not need to be adjusted once. The valve opening in the slightly abnormal set is adjusted once according to the abnormal value. The adjustment expression is: kd one =kd zero (1+ln(ycz+1)), where kd one is the valve opening after one adjustment, kd zero is the initial valve opening, and ycz is the abnormal value.

5. The equipment and facility operation and maintenance management method based on the Internet of Things according to claim 4 is characterized in that: Obtain the hydraulic value that the hydraulic equipment needs to output, and perform secondary adjustment on the opening of all valves that support operation in combination with the valve classification results, including the following steps: After all valve openings in the minor abnormality set have been adjusted once, the hydraulic pressure value that the hydraulic equipment needs to output is obtained, and the openings of all valves in the normal abnormality set are adjusted again; The flow output after adjusting the valve for a minor abnormality is expressed by the following formula: Where, L light is the total flow of minor anomalies, n light is the number of valves in the slightly abnormal set, f(C light,i ) is the function between the flow rate and the opening of the ith valve in the slight anomaly set; After the valves in the slightly abnormal set have been adjusted, calculate the opening required for the valves in the normal set. The total flow after adjustment should satisfy the following equation: L normal =P desired -L light , where P desired is the total flow after adjustment, L light is the total flow of slight abnormality, L normal The total flow of the normal set is obtained by evenly dividing the total adjustment amount to each valve in the normal set: Where n normal is the number of valves in the normal set, L normal is the total flow of the set without abnormality, C normal The flow rate of each valve in the non-abnormal set is calculated based on the function between the flow rate and the opening degree to obtain the opening degree of each valve in the non-abnormal set.

6. The equipment and facility operation and maintenance management method based on the Internet of Things according to claim 5 is characterized by: The calculation expression of the traffic impact index is: In the formula, Q is the flow impact index, C leak is the leakage flow constant, ΔP is the pressure difference between the two ends of the valve, μ is the dynamic viscosity of the liquid, d worn is the current wear size of the valve core, d new is the size of the new valve core.

7. The equipment and facility operation and maintenance management method based on the Internet of Things according to claim 6 is characterized by: The calculation expression of the stuck index is: Where K is the stuck index, S max is the maximum flow rate of the valve, f block is the current stuck area of ​​the valve core, f max is the maximum stuck area, τ is the time parameter, indicating the time characteristics of stuck recovery, and t is the stuck duration; The calculation expression of the expansion index is: U=Q0·(1-β·(T(t)-T0)), where U is the expansion index, Q0 is the initial flow rate, β is the thermal expansion coefficient of the valve core, T(t) is the current temperature, and T0 is the initial temperature.

8. An equipment and facility operation and maintenance management system based on the Internet of Things, used to implement the management method according to any one of claims 1 to 7, characterized in that: It includes data collection module, adjustment module and management module; Data collection module: obtains the number of valves in the hydraulic equipment and the location information of each valve. During the operation of the hydraulic equipment, the opening and health status of each valve are collected in real time through the sensor equipment; Adjustment module: Classify all valves according to health status, fully open the valves that do not support operation, and then adjust the opening of each valve that supports operation according to the health status to obtain the hydraulic value that the hydraulic equipment needs to output, and adjust the opening of all valves that support operation for the second time based on the valve classification results; Management module: After regularly acquiring the health status data of all valves, the health status data of all valves are weighted and calculated based on the relative importance of the valves in the hydraulic equipment to obtain the management value of the hydraulic equipment. Based on the management value, it is determined whether the hydraulic equipment needs to be managed.

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