Pressure detection method for high-voltage power station valve

Abstract

The invention relates to a pressure detection method for a high-voltage power station valve, and relates to the technical field of high-voltage power station valves, and the method comprises the steps: obtaining the specification information and material information of a to-be-detected high-voltage power station valve; calculating the initial power of a pressing device and the initial opening degree of an opening degree valve based on the specification information and the material information, and controlling the pressing device and the opening degree valve to start; in the detection process, temperature, flow velocity, exhaust port pressure and pressure data in the pressure chamber unit are collected in real time through a temperature sensor, a flow velocity sensor, a first pressure detection device and a second pressure detection device and recorded as detection data; the control unit judges the pressure state in the pressure chamber unit and the sealing performance of the valve according to all the collected detection data. According to the method and the device, the initial detection condition is matched with the valve characteristics, so that the detection pertinence and accuracy are improved.

Description

Technical Field

[0001] The present application relates to the technical field of high-voltage power station valves, and in particular to a pressure detection method for high-voltage power station valves. Background Art

[0002] High-voltage power station valves are key equipment used in high-voltage power station systems to control and regulate the flow of media. They can operate stably in high-temperature, high-pressure and complex working conditions, ensuring the safe and reliable operation of the power station system.

[0003] Patent No. 202210003926.0 discloses a valve pressure test device, comprising a pressure chamber unit, a test interface, a shutoff valve, a water inlet, a pressure device, an exhaust port, a drain port, an opening valve, a first pressure detection device, a second pressure detection device, and a central control module. By providing several sets of test interfaces with different nominal diameters on the upper portion of the pressure chamber unit, the present invention enables testing of valves of varying specifications.

[0004] The aforementioned patent lacks control over the pressure chamber unit when performing pressure testing on valves of different specifications, resulting in test results being susceptible to interference. Solving this technical problem is a difficult problem that those skilled in the art need to overcome. Summary of the Invention

[0005] In order to at least partially solve the above technical problems, the present application provides a pressure detection method for a high-voltage power station valve.

[0006] In a first aspect, the present application provides a pressure detection method for a high-voltage power station valve using the following technical solution.

[0007] A pressure detection method for a high-voltage power station valve, comprising: Obtain the specification and material information of the high-voltage power station valve to be tested; Calculating the initial power of the pressure device and the initial opening of the opening valve based on the specification information and material information and controlling the pressure device and the opening valve to start; During the detection process, the temperature, flow rate, exhaust port pressure and pressure inside the pressure chamber unit are collected in real time by the temperature sensor, flow rate sensor, first pressure detection device and second pressure detection device, and recorded as detection data; The control unit determines the pressure state in the pressure chamber unit and the sealing performance of the valve based on all the collected detection data.

[0008] By adopting the above technical solution, the initial power of the pressure device and the initial opening of the valve are calculated after obtaining the valve specifications and material information, and the corresponding device is started, so that the initial detection conditions match the valve characteristics, thereby improving the pertinence and accuracy of the detection; during the detection process, detection data is collected in real time through multiple sensors, and the control unit judges the pressure status and valve sealing performance based on these detection data.

[0009] Optionally, calculating the initial power of the pressure device and the initial opening of the opening valve based on the specification information and the material information, and controlling the pressure device and the opening valve to start, includes: Input the valve diameter and nominal pressure in the specification information and the material yield strength and elastic modulus in the material information into a pre-established power calculation model; the output of the power calculation model is the initial power of the pressure device; The required water flow rate is calculated based on the calculated initial power of the pressure device, the volume of the pressure chamber unit, and the diameter and length of the water inlet pipe; The calculated water flow rate is input into an opening calculation model of the opening valve; the opening calculation model of the opening valve is established according to the flow characteristic curve of the opening valve; the output of the opening calculation model of the opening valve is the initial opening of the opening valve; The control unit sends control signals to the suppressing device and the opening valve respectively according to the calculated initial power of the suppressing device and the initial opening of the opening valve, thereby starting the suppressing device and the opening valve.

[0010] Optionally, after sending the control signal to the pressure device and the opening valve, the method further includes: The control unit monitors the actual power of the pressure device and the actual opening of the opening valve in real time, and compares them with the calculated initial power and initial opening; If the deviation between the actual power and the initial power exceeds the preset power deviation threshold, or the deviation between the actual opening and the initial opening exceeds the preset opening deviation threshold, the control unit adjusts the control signal according to the deviation size and corrects the power of the pressure device and / or the opening of the opening valve.

[0011] Optionally, the control unit determines the pressure state in the pressure chamber unit based on all the collected detection data, including: Calculating a standard deviation of the pressure data inside the pressure chamber within a first time period, and if the standard deviation is less than a preset pressure stability threshold, determining that the pressure inside the pressure chamber is in a stable state; Monitor the changing trend of the pressure inside the pressure chamber over time and calculate the first-order derivative of the pressure. If the first-order derivative is greater than the preset pressure change rate threshold, it is determined to be in an unstable state; The average value of the pressure inside the pressure chamber is calculated, and the average value is compared with the preset target pressure to obtain the difference between the two. If the difference is less than the preset pressure deviation threshold, it is determined that the pressure meets the target requirement.

[0012] Optionally, the method further includes: Collect energy consumption data of the pressure device under different working conditions and corresponding valve specifications, material information, pressure chamber unit volume, water inlet pipe diameter and length and other parameters; The energy consumption evaluation model is trained using valve specification information, material information, pressure chamber unit parameters, and detection time as input features and the pressure device energy consumption as output labels. Installing power monitoring equipment on the pressure device to collect energy consumption data of the pressure device in real time; The collected real-time energy consumption data is transmitted to the control unit, which compares and analyzes the actual energy consumption with the theoretical energy consumption predicted by the energy consumption assessment model; Adjusting the initial power output by the power calculation model in combination with the energy consumption assessment model with the goal of reducing energy consumption; During the detection process, the control unit dynamically adjusts the power of the pressure device based on the real-time collected temperature, flow rate, exhaust port pressure and internal pressure data of the pressure chamber unit; when the internal pressure of the pressure chamber is close to the preset target pressure and is in a stable state, the power of the pressure device is reduced; when the pressure fluctuates and needs to be adjusted quickly, the power is increased.

[0013] Optionally, adjusting the initial power output by the power calculation model with the goal of reducing energy consumption in combination with the energy consumption evaluation model includes: The control unit extracts theoretical energy consumption data corresponding to the current detection working condition based on the energy consumption evaluation model; Based on the difference between actual energy consumption and theoretical energy consumption, the energy consumption deviation value is obtained; If the energy consumption deviation value exceeds the preset energy consumption deviation threshold, the control unit marks that there is an abnormal energy consumption in this detection; When energy consumption anomalies occur, the control unit combines the real-time collected data on the temperature, flow rate, exhaust port pressure, and internal pressure of the pressure chamber to analyze the causes that may have led to the energy consumption deviation; Based on the results of energy consumption comparison analysis and deviation cause analysis, with the goal of reducing energy consumption, determine whether it is necessary to adjust the initial power output by the power calculation model; if necessary, the control unit obtains the adjusted initial power based on the energy consumption evaluation model, the deviation cause analysis results and the current detection conditions.

[0014] Optionally, the control unit determines the cause of the energy consumption deviation based on a fault tree analysis based on the real-time collected data of temperature, flow rate, exhaust port pressure, and internal pressure of the pressure chamber unit, as well as the specification information and material information of the valve; Based on the energy consumption comparison analysis and deviation cause diagnosis results, determine whether the deviation should adjust the initial power to reduce energy consumption; If it is determined that the initial power should be adjusted, the control unit will formulate an initial power adjustment strategy based on the energy consumption evaluation model, the deviation cause analysis results, and the current detection conditions; The control unit calculates the adjusted initial power based on the current detection working conditions, energy consumption evaluation model, adjustment strategy and optimization algorithm.

[0015] Optionally, before the pressure control device and the opening valve are activated, the method further includes: The control unit inputs valve specification information, material information, pressure chamber unit structural parameters, and water inlet pipe parameters into a pre-built fluid dynamics simulation model; the fluid dynamics simulation model is used to simulate the dynamic changes of the fluid in the pressure chamber after the pressure device is activated; Fluid dynamics simulation model output: the maximum transient pressure peak that may be generated in the initial stage of pressure, the pressure wave propagation path and duration; The control unit formulates the power increase curve of the pressure device and the valve opening rate control strategy based on the simulation results to prevent the transient pressure shock from exceeding the valve's tolerance limit; During the actual pressure-increasing process, the control unit dynamically adjusts the output power of the pressure-increasing device according to the power increase curve set in the simulation, and corrects the response speed of the opening valve in combination with the real-time collected pressure data; if the real-time detected pressure rise rate exceeds the safety range predicted by the simulation, the control unit reduces the power of the pressure-increasing device and adjusts the opening valve to release some of the pressure.

[0016] Optionally, the control unit determines the sealing performance of the valve based on all collected detection data, including: Establishing a sealing performance evaluation model, the model uses pressure chamber internal pressure data, exhaust port pressure data, temperature data, flow rate data, and valve specification information and material information as input features; The leakage rate of the valve sealing surface is calculated using the sealing performance evaluation model; wherein the leakage volume per unit time is calculated based on the difference between the internal pressure of the pressure chamber and the exhaust port pressure, the medium density corrected by the temperature data, and the flow rate data; The calculated leakage rate is compared with a preset sealing performance threshold. If the leakage rate is less than or equal to the sealing performance threshold, the valve sealing performance is determined to be qualified; if the leakage rate is greater than the sealing performance threshold, the valve sealing performance is determined to be unqualified; The sealing performance evaluation model is trained by the following steps: Collect sample data of valve sealing performance that is qualified or unqualified in historical tests. The sample data includes test data, valve specification information, material information, and actual sealing performance judgment results; A neural network algorithm is used, with test data, valve specification information, and material information as input, and the actual sealing performance judgment results as output labels. The initial model is trained and verified until the classification accuracy of the initial model reaches the preset accuracy requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flow chart of a pressure detection method for a high-voltage power station valve according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 The present application is further described with reference to the following specific examples: The present application discloses a method for detecting pressure of a high-voltage power station valve, comprising the following steps: Step 101: Obtain specification information and material information of a high-voltage power station valve to be inspected.

[0019] Step 102: Calculate the initial power of the pressure device and the initial opening of the opening valve based on the specification information and the material information, and control the pressure device and the opening valve to start.

[0020] Step 103: During the detection process, the temperature, flow rate, exhaust port pressure and pressure inside the pressure chamber unit are collected in real time through the temperature sensor, flow rate sensor, first pressure detection device and second pressure detection device, and recorded as detection data.

[0021] Step 104: The control unit determines the pressure state in the pressure chamber unit and the sealing performance of the valve based on all the collected detection data.

[0022] Specifically, by obtaining the valve specifications and material information, the initial power of the pressure device and the initial opening of the valve are calculated and the corresponding device is started, so that the initial detection conditions match the valve characteristics, thereby improving the pertinence and accuracy of the detection; during the detection process, detection data is collected in real time through multiple sensors, and the control unit judges the pressure status and valve sealing performance based on these detection data.

[0023] As a specific implementation of a pressure detection method for a high-voltage power station valve, the initial power of a pressure-testing device and the initial opening of an opening valve are calculated based on the specification information and material information, and the pressure-testing device and the opening valve are controlled to start, including: Input the valve diameter and nominal pressure in the specification information and the material yield strength and elastic modulus in the material information into a pre-established power calculation model; the output of the power calculation model is the initial power of the pressure device; The required water flow rate is calculated based on the calculated initial power of the pressure device, the volume of the pressure chamber unit, and the diameter and length of the water inlet pipe; The calculated water flow rate is input into an opening calculation model of the opening valve; the opening calculation model of the opening valve is established according to the flow characteristic curve of the opening valve; the output of the opening calculation model of the opening valve is the initial opening of the opening valve; The control unit sends control signals to the suppressing device and the opening valve respectively according to the calculated initial power of the suppressing device and the initial opening of the opening valve, thereby starting the suppressing device and the opening valve.

[0024] Specifically, the valve diameter, nominal pressure, material yield strength and elastic modulus are input into a pre-established power calculation model to determine the initial power of the pressure device; the water flow rate is calculated in combination with the unit volume of the pressure chamber, the diameter and length of the water inlet pipe, and the water flow rate is converted into the initial opening of the opening valve using the opening valve opening calculation model established based on the opening valve flow characteristic curve; the control unit sends a control signal to start the device based on the calculated initial power and initial opening, thereby realizing the startup and coordinated operation of the pressure device and the opening valve, and reducing the detection error caused by improper initial condition setting.

[0025] As a specific implementation of a pressure detection method for a high-voltage power station valve, the training process of the power calculation model includes: Collect historical test data on pressure testing of high-voltage power station valves of different specifications and materials; the test data includes valve diameter, nominal pressure, material yield strength, elastic modulus, and actual power used by the pressure device; Preprocess the collected experimental data and divide the preprocessed data into training set and test set; The valve diameter, nominal pressure, material yield strength, and elastic modulus are used as input features; the power of the pressure device is used as the output label; and the initial model is trained using the training set. Use the test set to evaluate the trained initial model; The parameters of the initial model are adjusted according to the evaluation results until the initial model meets the performance index requirements to obtain a power calculation model.

[0026] Specifically, historical test data covering multiple dimensions, including valve diameter, nominal pressure, material yield strength, elastic modulus, and the actual power of the pressure device, was collected. This data covers actual testing of valves of varying specifications and materials, enabling the model to learn the relationship between various valve characteristics and the required pressure power, providing a foundation for model training. The collected data was preprocessed and divided into training and test sets. Preprocessing removes noise and outliers, improving data quality. Dividing the data into training and test sets helps the model learn common data characteristics during training and validates its generalization capabilities on the test set. The model was trained using valve diameter, nominal pressure, material yield strength, and elastic modulus as input features and pressure device power as output labels, establishing a targeted and accurate mapping between input features and output power. The initial model was repeatedly trained on the training set, with the model continuously adjusting its parameters to fit the patterns in the data. The trained model was evaluated on the test set, enabling timely identification of the model's performance on unseen data and identifying any deficiencies. Based on the evaluation results, the initial model parameters were adjusted until the performance requirements were met.

[0027] As a specific embodiment of a pressure detection method for a high-voltage power station valve, after sending a control signal to a pressure-pressing device and an opening valve, the method further includes: The control unit monitors the actual power of the pressure device and the actual opening of the opening valve in real time, and compares them with the calculated initial power and initial opening; If the deviation between the actual power and the initial power exceeds the preset power deviation threshold, or the deviation between the actual opening and the initial opening exceeds the preset opening deviation threshold, the control unit adjusts the control signal according to the deviation size and corrects the power of the pressure device and / or the opening of the opening valve.

[0028] Specifically, due to the presence of various uncontrollable factors in actual working conditions, such as losses during equipment operation, external environmental interference, etc., this will cause the actual power of the pressure device and the actual opening of the opening valve to deviate from the calculated initial value. The control unit performs real-time monitoring and comparison. When the deviation exceeds the preset threshold, the control unit adjusts the control signal according to the deviation size and corrects the power of the pressure device and / or the opening of the opening valve. If the actual power exceeds the initial power and exceeds the deviation threshold, the control unit can reduce the power of the pressure device to avoid unnecessary damage to the valve due to excessive power, and at the same time reduce energy waste; if the actual opening deviates too much from the initial opening, the control unit adjusts the opening of the opening valve to ensure that the water flow rate in the pressure chamber unit meets the detection requirements, so that the detection process is carried out in a stable environment; effectively reducing the detection error caused by equipment operation deviation.

[0029] In one embodiment of a pressure detection method for a high-voltage power station valve, a control unit determines the pressure state in a pressure chamber unit based on all collected detection data, including: Calculating a standard deviation of the pressure data inside the pressure chamber within a first time period, and if the standard deviation is less than a preset pressure stability threshold, determining that the pressure inside the pressure chamber is in a stable state; Monitor the changing trend of the pressure inside the pressure chamber over time and calculate the first-order derivative of the pressure. If the first-order derivative is greater than the preset pressure change rate threshold, it is determined to be in an unstable state; The average value of the pressure inside the pressure chamber is calculated, and the average value is compared with the preset target pressure to obtain the difference between the two. If the difference is less than the preset pressure deviation threshold, it is determined that the pressure meets the target requirement.

[0030] As one embodiment of a method for detecting pressure of a high-voltage power station valve, the method further includes: Collect energy consumption data of the pressure device under different working conditions and corresponding valve specifications, material information, pressure chamber unit volume, water inlet pipe diameter and length and other parameters; The energy consumption evaluation model is trained using valve specification information, material information, pressure chamber unit parameters, and detection time as input features and the pressure device energy consumption as output labels. Installing power monitoring equipment on the pressure device to collect energy consumption data of the pressure device in real time; The collected real-time energy consumption data is transmitted to the control unit, which compares and analyzes the actual energy consumption with the theoretical energy consumption predicted by the energy consumption assessment model; Adjusting the initial power output by the power calculation model in combination with the energy consumption assessment model with the goal of reducing energy consumption; During the detection process, the control unit dynamically adjusts the power of the pressure device based on the real-time collected temperature, flow rate, exhaust port pressure and internal pressure data of the pressure chamber unit; when the internal pressure of the pressure chamber is close to the preset target pressure and is in a stable state, the power of the pressure device is reduced; when the pressure fluctuates and needs to be adjusted quickly, the power is increased.

[0031] Specifically, the energy consumption data and related parameters of the pressure device under different working conditions are collected, and the energy consumption assessment model is obtained by training with these data. An electric energy monitoring device is installed on the pressure device to collect energy consumption data in real time, and the data is transmitted to the control unit for comparative analysis with the theoretical energy consumption. In combination with the energy consumption assessment model, the initial power output by the power calculation model is adjusted with the goal of reducing energy consumption. This allows the power setting to be optimized at the beginning of the test to avoid unnecessary energy waste due to excessive initial power. During the test process, the control unit dynamically adjusts the power of the pressure device based on the real-time collected pressure data. When the pressure inside the pressure chamber is close to the preset target pressure and is stable, the power is reduced. This reduces unnecessary energy output while ensuring the test effect. When the pressure fluctuates and needs to be adjusted quickly, the power is increased to ensure the smooth progress of the test process and the accuracy of the test results.

[0032] In one embodiment of a pressure detection method for a high-voltage power station valve, the initial power output by the power calculation model is adjusted with the goal of reducing energy consumption in combination with an energy consumption assessment model, including: The control unit extracts theoretical energy consumption data corresponding to the current detection working condition based on the energy consumption evaluation model; Based on the difference between actual energy consumption and theoretical energy consumption, the energy consumption deviation value is obtained; If the energy consumption deviation value exceeds the preset energy consumption deviation threshold, the control unit marks that there is an abnormal energy consumption in this detection; When energy consumption anomalies occur, the control unit combines the real-time collected data on the temperature, flow rate, exhaust port pressure, and internal pressure of the pressure chamber to analyze the causes that may have led to the energy consumption deviation; Based on the results of energy consumption comparison analysis and deviation cause analysis, with the goal of reducing energy consumption, determine whether it is necessary to adjust the initial power output by the power calculation model; if necessary, the control unit obtains the adjusted initial power based on the energy consumption evaluation model, the deviation cause analysis results and the current detection conditions.

[0033] Specifically, the control unit extracts the corresponding theoretical energy consumption data based on the energy consumption assessment model, calculates the difference between the actual energy consumption and the theoretical energy consumption to obtain the energy consumption deviation value, and compares it with the preset energy consumption deviation threshold. Once the energy consumption deviation value exceeds the threshold, it can promptly mark the presence of energy consumption anomalies in this detection. When energy consumption anomalies occur, the deviation cause analysis is conducted in combination with various data collected in real time within the pressure chamber unit. Through comprehensive analysis of the data, the potential causes of the energy consumption deviation are analyzed, such as valve sealing problems, abnormal pipeline resistance, etc. The decision on whether to adjust the initial power is made based on the results of the energy consumption comparison analysis and the deviation cause analysis. If adjustment is required, the adjusted initial power is obtained based on the energy consumption assessment model, the deviation cause analysis results, and the current detection conditions. If the energy consumption is too high, unnecessary energy consumption can be reduced by adjusting the initial power. If the energy consumption is abnormally low but the detection results may be affected, the power can be reasonably increased to ensure the detection effect, effectively improving the energy utilization efficiency during the high-voltage power station valve pressure detection process and reducing energy consumption costs.

[0034] One implementation of a pressure detection method for a high-voltage power station valve determines whether to adjust the initial power output by a power calculation model based on the results of energy consumption comparison analysis and deviation cause analysis with the goal of reducing energy consumption, including: The control unit uses a fault tree analysis to determine the possible causes of energy consumption deviations based on the real-time collected data on temperature, flow rate, exhaust port pressure, and internal pressure of the pressure chamber unit, as well as valve specifications and material information. Based on the energy consumption comparison analysis and deviation cause diagnosis results, determine whether the deviation should adjust the initial power to reduce energy consumption; If it is determined that the initial power should be adjusted, the control unit will formulate an initial power adjustment strategy based on the energy consumption evaluation model, the deviation cause analysis results, and the current detection conditions; The control unit calculates the adjusted initial power based on the current detection working conditions, energy consumption evaluation model, adjustment strategy and optimization algorithm.

[0035] Specifically, the control unit combines a variety of real-time collected data with valve specifications and material information, and uses fault tree analysis to determine the cause of energy consumption deviations. Based on energy consumption comparison analysis and accurate deviation cause diagnosis results, it determines whether to adjust the initial power. If it is determined that initial power adjustment is necessary, the control unit formulates an adjustment strategy based on the energy consumption assessment model, deviation cause analysis results, and current test conditions. The control unit calculates the adjusted initial power based on the current test conditions, energy consumption assessment model, adjustment strategy, and optimization algorithm, significantly reducing energy consumption during the test process and improving energy utilization efficiency, while ensuring the stability of the test process and the accuracy of the test results.

[0036] As one embodiment of a pressure detection method for a high-voltage power station valve, before the pressure control device and the opening valve are activated, the method further includes: The control unit inputs valve specification information, material information, pressure chamber unit structural parameters, and water inlet pipe parameters into a pre-built fluid dynamics simulation model; the fluid dynamics simulation model is used to simulate the dynamic changes of the fluid in the pressure chamber after the pressure device is activated; Fluid dynamics simulation model output: the maximum transient pressure peak that may be generated in the initial stage of pressure, the pressure wave propagation path and duration; The control unit formulates the power increase curve of the pressure device and the valve opening rate control strategy based on the simulation results to prevent the transient pressure shock from exceeding the valve's tolerance limit; During the actual pressure-increasing process, the control unit dynamically adjusts the output power of the pressure-increasing device according to the power increase curve set in the simulation, and corrects the response speed of the opening valve in combination with the real-time collected pressure data; if the real-time detected pressure rise rate exceeds the safety range predicted by the simulation, the control unit reduces the power of the pressure-increasing device and adjusts the opening valve to release some of the pressure.

[0037] In one embodiment of a pressure detection method for a high-voltage power station valve, the control unit determines the sealing performance of the valve based on all collected detection data, including: Establishing a sealing performance evaluation model, the model uses pressure chamber internal pressure data, exhaust port pressure data, temperature data, flow rate data, and valve specification information and material information as input features; The leakage rate of the valve sealing surface is calculated using the sealing performance evaluation model; wherein the leakage volume per unit time is calculated based on the difference between the internal pressure of the pressure chamber and the exhaust port pressure, the medium density corrected by the temperature data, and the flow rate data; The calculated leakage rate is compared with a preset sealing performance threshold. If the leakage rate is less than or equal to the sealing performance threshold, the valve sealing performance is determined to be qualified; if the leakage rate is greater than the sealing performance threshold, the valve sealing performance is determined to be unqualified; The sealing performance evaluation model is trained by the following steps: Collect sample data of valve sealing performance that is qualified or unqualified in historical tests. The sample data includes test data, valve specification information, material information, and actual sealing performance judgment results; A neural network algorithm is used, with test data, valve specification information, and material information as input, and the actual sealing performance judgment results as output labels. The initial model is trained and verified until the classification accuracy of the initial model reaches the preset accuracy requirements.

[0038] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although this specification has described the present application in detail with reference to the above embodiments, ordinary technicians in this field should understand that technicians in the relevant technical field can still modify or replace the present application with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A pressure detection method for a high-voltage power station valve, characterized in that: include: Obtain the specification and material information of the high-voltage power station valve to be tested; Calculating the initial power of the pressure device and the initial opening of the opening valve based on the specification information and material information and controlling the pressure device and the opening valve to start; During the detection process, the temperature, flow rate, exhaust port pressure and pressure inside the pressure chamber unit are collected in real time by the temperature sensor, flow rate sensor, first pressure detection device and second pressure detection device, and recorded as detection data; The control unit determines the pressure state in the pressure chamber unit and the sealing performance of the valve based on all the collected detection data.

2. A pressure detection method for a high-voltage power station valve according to claim 1, characterized in that: Calculating the initial power of the pressure device and the initial opening of the opening valve based on the specification information and the material information, and controlling the pressure device and the opening valve to start, including: Input the valve diameter and nominal pressure in the specification information and the material yield strength and elastic modulus in the material information into a pre-established power calculation model; the output of the power calculation model is the initial power of the pressure device; The required water flow rate is calculated based on the calculated initial power of the pressure device, the volume of the pressure chamber unit, and the diameter and length of the water inlet pipe; The calculated water flow rate is input into an opening calculation model of the opening valve; the opening calculation model of the opening valve is established according to the flow characteristic curve of the opening valve; the output of the opening calculation model of the opening valve is the initial opening of the opening valve; The control unit sends control signals to the suppressing device and the opening valve respectively according to the calculated initial power of the suppressing device and the initial opening of the opening valve, thereby starting the suppressing device and the opening valve.

3. A pressure detection method for a high-voltage power station valve according to claim 2, characterized in that: The training process of the power calculation model includes: Collect historical test data on pressure testing of high-voltage power station valves of different specifications and materials; the test data includes valve diameter, nominal pressure, material yield strength, elastic modulus, and actual power used by the pressure device; Preprocess the collected experimental data and divide the preprocessed data into training set and test set; The valve diameter, nominal pressure, material yield strength, and elastic modulus are used as input features; the power of the pressure device is used as the output label; and the initial model is trained using the training set. Use the test set to evaluate the trained initial model; The parameters of the initial model are adjusted according to the evaluation results until the initial model meets the performance index requirements to obtain a power calculation model.

4. A pressure detection method for a high-voltage power station valve according to claim 3, characterized in that: After sending the control signal to the pressure device and the opening valve, the method further includes: The control unit monitors the actual power of the pressure device and the actual opening of the opening valve in real time, and compares them with the calculated initial power and initial opening; If the deviation between the actual power and the initial power exceeds a preset power deviation threshold, or the deviation between the actual opening and the initial opening exceeds a preset opening deviation threshold, the control unit adjusts the control signal according to the size of the deviation to correct the power of the pressure device and / or the opening of the opening valve; The control unit determines the pressure state in the pressure chamber unit based on all the collected detection data, including: Calculating a standard deviation of the pressure data inside the pressure chamber within a first time period, and if the standard deviation is less than a preset pressure stability threshold, determining that the pressure inside the pressure chamber is in a stable state; Monitor the changing trend of the pressure inside the pressure chamber over time and calculate the first-order derivative of the pressure. If the first-order derivative is greater than the preset pressure change rate threshold, it is determined to be in an unstable state; The average value of the pressure inside the pressure chamber is calculated, and the average value is compared with the preset target pressure to obtain the difference between the two. If the difference is less than the preset pressure deviation threshold, it is determined that the pressure meets the target requirement.

5. A pressure detection method for a high-voltage power station valve according to claim 4, characterized in that: The method further comprises: Collect energy consumption data of the pressure device under different working conditions and corresponding valve specifications, material information, pressure chamber unit volume, water inlet pipe diameter and length and other parameters; The energy consumption evaluation model is trained using valve specification information, material information, pressure chamber unit parameters, and detection time as input features and the pressure device energy consumption as output labels. Installing power monitoring equipment on the pressure device to collect energy consumption data of the pressure device in real time; The collected real-time energy consumption data is transmitted to the control unit, which compares and analyzes the actual energy consumption with the theoretical energy consumption predicted by the energy consumption assessment model; Adjusting the initial power output by the power calculation model in combination with the energy consumption assessment model with the goal of reducing energy consumption; During the detection process, the control unit dynamically adjusts the power of the pressure device based on the real-time collected temperature, flow rate, exhaust port pressure and internal pressure data of the pressure chamber unit; when the internal pressure of the pressure chamber is close to the preset target pressure and is in a stable state, the power of the pressure device is reduced; when the pressure fluctuates and needs to be adjusted quickly, the power is increased.

6. A pressure detection method for a high-voltage power station valve according to claim 5, characterized in that: The initial power output by the power calculation model is adjusted with the goal of reducing energy consumption in combination with the energy consumption assessment model, including: The control unit extracts theoretical energy consumption data corresponding to the current detection working condition based on the energy consumption evaluation model; Based on the difference between actual energy consumption and theoretical energy consumption, the energy consumption deviation value is obtained; If the energy consumption deviation value exceeds the preset energy consumption deviation threshold, the control unit marks that there is an abnormal energy consumption in this detection; When energy consumption anomalies occur, the control unit combines the real-time collected data on the temperature, flow rate, exhaust port pressure, and internal pressure of the pressure chamber to analyze the causes that may have led to the energy consumption deviation; Based on the results of energy consumption comparison analysis and deviation cause analysis, with the goal of reducing energy consumption, determine whether it is necessary to adjust the initial power output by the power calculation model; if necessary, the control unit obtains the adjusted initial power based on the energy consumption evaluation model, the deviation cause analysis results and the current detection conditions.

7. A pressure detection method for a high-voltage power station valve according to claim 6, characterized in that: Based on the results of energy consumption comparison analysis and deviation cause analysis, with the goal of reducing energy consumption, determine whether the initial power output by the power calculation model needs to be adjusted, including: The control unit uses a fault tree analysis to determine the possible causes of energy consumption deviations based on the real-time collected data on temperature, flow rate, exhaust port pressure, and internal pressure of the pressure chamber unit, as well as valve specifications and material information. Based on the energy consumption comparison analysis and deviation cause diagnosis results, determine whether the deviation should adjust the initial power to reduce energy consumption; If it is determined that the initial power should be adjusted, the control unit will formulate an initial power adjustment strategy based on the energy consumption evaluation model, the deviation cause analysis results, and the current detection conditions; The control unit calculates the adjusted initial power based on the current detection working conditions, energy consumption evaluation model, adjustment strategy and optimization algorithm.

8. A pressure detection method for a high-voltage power station valve according to claim 7, characterized in that: Before controlling the pressure device and the opening valve to start, the method further includes: The control unit inputs valve specification information, material information, pressure chamber unit structural parameters, and water inlet pipe parameters into a pre-built fluid dynamics simulation model; the fluid dynamics simulation model is used to simulate the dynamic changes of the fluid in the pressure chamber after the pressure device is activated; Fluid dynamics simulation model output: the maximum transient pressure peak that may be generated in the initial stage of pressure, the pressure wave propagation path and duration; The control unit formulates the power increase curve of the pressure device and the valve opening rate control strategy based on the simulation results to prevent the transient pressure shock from exceeding the valve's tolerance limit; During the actual pressure-increasing process, the control unit dynamically adjusts the output power of the pressure-increasing device according to the power increase curve set in the simulation, and corrects the response speed of the opening valve in combination with the real-time collected pressure data; if the real-time detected pressure rise rate exceeds the safety range predicted by the simulation, the control unit reduces the power of the pressure-increasing device and adjusts the opening valve to release some of the pressure.

9. A pressure detection method for a high-voltage power station valve according to claim 8, characterized in that: The control unit determines the sealing performance of the valve based on all the collected detection data, including: Establishing a sealing performance evaluation model, the model uses pressure chamber internal pressure data, exhaust port pressure data, temperature data, flow rate data, and valve specification information and material information as input features; The leakage rate of the valve sealing surface is calculated using the sealing performance evaluation model; wherein the leakage volume per unit time is calculated based on the difference between the internal pressure of the pressure chamber and the exhaust port pressure, the medium density corrected by the temperature data, and the flow rate data; The calculated leakage rate is compared with a preset sealing performance threshold. If the leakage rate is less than or equal to the sealing performance threshold, the valve sealing performance is determined to be qualified; if the leakage rate is greater than the sealing performance threshold, the valve sealing performance is determined to be unqualified; The sealing performance evaluation model is trained by the following steps: Collect sample data of valve sealing performance that is qualified or unqualified in historical tests. The sample data includes test data, valve specification information, material information, and actual sealing performance judgment results; A neural network algorithm is used, with test data, valve specification information, and material information as input, and the actual sealing performance judgment results as output labels. The initial model is trained and verified until the classification accuracy of the initial model reaches the preset accuracy requirements.

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