Pilot operated safety valve action performance test method, device and equipment and storage medium

Abstract

The invention discloses a pilot operated safety valve action performance test method, device and equipment and a storage medium, and relates to the technical field of safety valves, and the method comprises the steps: deploying a pressure sensor used for monitoring the dynamic change of pressure and an acoustic emission sensor used for capturing a transient elastic wave signal of a mechanical structure; synchronously acquiring output signals of the pressure sensor and the acoustic emission sensor through a synchronous data acquisition system; identifying a mechanical action event of separation and contact between a main valve clack and a valve seat of the safety valve based on the synchronously acquired acoustic emission signals, and determining a corresponding action time point; and extracting pressure parameters related to the action performance from the synchronously acquired pressure signals according to the action time point. The technical effects of improving the accuracy and objectivity of the measurement of the pressure parameters related to the action performance of the pilot operated safety valve and improving the test efficiency are achieved.

Description

Technical Field

[0001] This application relates to the field of safety valve technology, and in particular to a method, apparatus, equipment and storage medium for testing the operating performance of a pilot-operated safety valve. Background Technology

[0002] Pilot-operated safety valves are critical equipment for overpressure protection in nuclear power plants, and their operational performance needs to be tested accurately and periodically, as clearly stipulated in relevant standards. Traditional testing methods involve setting up a test loop and slowly pressurizing the valve, relying on personnel to visually observe the pressure gauge or listen to the sound to determine the valve's opening and closing moments, recording parameters such as set pressure and reseating pressure. However, this method has significant shortcomings: measurement accuracy is limited; valve opening is a rapid dynamic process, and subjective judgment and insufficient pressure gauge response speed lead to deviations in measurement results; it cannot obtain complete dynamic information about the valve's opening and closing process, making it difficult to assess the health status of internal components; and it requires repeated tests and close manual monitoring, resulting in low testing efficiency and impacting the schedule of nuclear power plant overhauls. Summary of the Invention

[0003] This application provides a method, apparatus, equipment, and storage medium for testing the operational performance of a pilot-operated safety valve. It addresses the problems in related technologies where reliance on subjective human judgment and insufficient response from ordinary instruments leads to limited measurement accuracy, inaccurate extraction of dynamic action-related pressure parameters, and low testing efficiency, resulting from the inability to accurately capture the instantaneous valve action.

[0004] According to a first aspect of this application, a method for testing the operational performance of a pilot-operated safety valve is provided, comprising: Deploy pressure sensors to monitor dynamic changes in pressure and acoustic emission sensors to capture transient elastic wave signals from mechanical structures; The output signals of the pressure sensor and the acoustic emission sensor are synchronously acquired by a synchronous data acquisition system. Based on synchronously acquired acoustic emission signals, mechanical action events that occur when the main valve disc of the safety valve separates from and contacts the valve seat are identified, and the corresponding action time points are determined. Based on the action time point, extract pressure parameters related to action performance from the synchronously acquired pressure signal.

[0005] According to a second aspect of this application, a pilot-operated safety valve operating performance testing device is provided, comprising: The deployment module is configured to deploy a pressure sensor for monitoring dynamic changes in pressure and an acoustic emission sensor for capturing transient elastic wave signals from mechanical structures. The acquisition module is configured to synchronously acquire the output signals of the pressure sensor and the acoustic emission sensor through a synchronous data acquisition system; The identification module is configured to identify mechanical action events in which the main valve disc of the safety valve separates from and contacts the valve seat based on synchronously acquired acoustic emission signals, and to determine the corresponding action time point. The extraction module is configured to extract pressure parameters related to action performance from the synchronously acquired pressure signals based on the action time point.

[0006] According to a third aspect of this application, an electronic device is provided, comprising: At least one processor; and memory that is communicatively connected to at least one processor; The memory stores instructions that can be executed by at least one processor, which are executed by at least one processor to enable the at least one processor to perform the pilot-operated safety valve actuation performance test method described in the first aspect above.

[0007] According to a fourth aspect of this application, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to cause a computer to execute the pilot-operated safety valve action performance testing method described in the first aspect above.

[0008] According to a fifth aspect of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements the pilot-operated safety valve operation performance testing method as described in the first aspect above.

[0009] This application provides a method, apparatus, equipment, and storage medium for testing the operational performance of a pilot-operated safety valve, comprising: deploying a pressure sensor for monitoring dynamic pressure changes and an acoustic emission sensor for capturing transient elastic wave signals of the mechanical structure; synchronously acquiring the output signals of the pressure sensor and the acoustic emission sensor through a synchronous data acquisition system; identifying mechanical action events of separation and contact between the main valve disc and the valve seat of the safety valve based on the synchronously acquired acoustic emission signals, and determining the corresponding action time point; and extracting pressure parameters related to the operational performance from the synchronously acquired pressure signals according to the action time point. This application utilizes a pressure sensor for monitoring dynamic pressure changes and an acoustic emission sensor for capturing transient elastic wave signals from mechanical structures. By synchronously acquiring the output signals of both sensors through a synchronous data acquisition system, it is possible to accurately identify the separation and contact mechanical action events between the main valve disc and the valve seat of the safety valve based on the synchronously acquired acoustic emission signals, and determine the corresponding action time point. Then, relevant pressure parameters are extracted from the synchronously acquired pressure signals based on this action time point. Therefore, it can solve the problems in related technologies where the reliance on subjective human judgment and the insufficient response of ordinary instruments make it difficult to accurately capture the instantaneous valve action, resulting in limited measurement accuracy, inaccurate extraction of dynamic action-related pressure parameters, and low testing efficiency. This achieves the technical effect of improving the accuracy and objectivity of pressure parameter measurement related to the action performance of pilot-operated safety valves and increasing testing efficiency.

[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0011] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A schematic flowchart illustrating a method for testing the operational performance of a pilot-operated safety valve, provided in an embodiment of this application. Figure 2 A schematic flowchart illustrating another pilot-operated safety valve operation performance testing method provided in this application embodiment; Figure 3 A schematic flowchart illustrating another pilot-operated safety valve operation performance testing method provided in this application embodiment; Figure 4 This is a schematic diagram of a pilot-operated safety valve operation performance testing device provided in an embodiment of this application. Detailed Implementation

[0013] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0014] The following description, with reference to the accompanying drawings, outlines a method, apparatus, equipment, and storage medium for testing the operational performance of a pilot-operated safety valve according to embodiments of this application.

[0015] Figure 1 This is a schematic flowchart illustrating a method for testing the operational performance of a pilot-operated safety valve, as provided in an embodiment of this application.

[0016] like Figure 1 As shown, the method includes the following steps: Step 101: Deploy a pressure sensor for monitoring dynamic changes in pressure and an acoustic emission sensor for capturing transient elastic wave signals from the mechanical structure.

[0017] In some embodiments, when conducting performance testing of a pilot-operated safety valve, the deployment of a pressure sensor and an acoustic emission sensor is required first. The pressure sensor is used to accurately monitor the dynamic changes in system pressure during the test. Its installation location is selected on the pipe wall at the inlet end of the pilot-operated safety valve under test, preferably in the straight pipe section before the inlet flange, ensuring that the sensor can directly and stably sense the real-time fluctuations in the pressure of the medium within the pipe. This pressure sensor must have a millisecond-level fast response capability and meet high-precision measurement requirements to accurately capture subtle pressure changes before and after the safety valve's operation, providing a reliable data source for subsequent pressure parameter extraction. The acoustic emission sensor focuses on capturing transient elastic wave signals generated during the movement of the mechanical structure. These signals originate from minute friction, impacts, or separations between the main valve disc and the valve seat of the safety valve. Its installation location is selected on the outer wall of the main valve body, preferably close to the rigid structural part of the main valve seat, to maximize the reception of the target signal and reduce environmental interference. Acoustic emission sensors must possess wideband response characteristics, enabling them to sensitively detect elastic wave signals across different frequency ranges. During installation, a firm fit against the valve body surface is crucial to ensure the stability and integrity of signal transmission. The beneficial effect of a well-planned deployment of these two sensors is that they can accurately capture dynamic pressure data and mechanical motion characteristic signals, respectively, providing high-quality raw data support for subsequent synchronous acquisition and parameter analysis, thus laying the foundation for improved testing accuracy.

[0018] Step 102: The output signals of the pressure sensor and the acoustic emission sensor are synchronously acquired through a synchronous data acquisition system.

[0019] In some embodiments, after the deployment of pressure sensors and acoustic emission sensors is completed, a synchronous data acquisition system is activated to collect signals. This system must have multi-channel access capability, enabling simultaneous reception of output signals from both sensors. Crucially, it must possess a high-precision synchronous triggering function to ensure complete synchronization between the pressure signal and acoustic emission signal acquisition processes, eliminating time deviations. To accurately capture the rapidly changing signal characteristics during the safety valve's operation, the system must be set to a sufficiently high sampling frequency to clearly record subtle signal fluctuations, ensuring the integrity and accuracy of the signal data. Before entering the acquisition system, the raw signals output by the sensors undergo necessary preprocessing, such as amplifying weak signals and filtering environmental interference noise, ensuring clearer acquisition of the effective signals. During acquisition, the system continuously records signal data from both sensors, covering the entire process from the pressure system's initial pressurization and safety valve opening to depressurization and safety valve closure, ensuring no critical action phase is missed. The core value of synchronous acquisition lies in establishing a precise time correspondence between pressure signals and acoustic emission signals, ensuring that pressure data at each time point is precisely matched with the corresponding acoustic emission signal. This acquisition method provides solid data support for subsequent identification of mechanical action events based on acoustic emission signals and extraction of pressure parameters at corresponding time points. It avoids analysis errors caused by signal asynchrony from the source and lays the foundation for improving test accuracy.

[0020] Step 103: Based on the synchronously acquired acoustic emission signal, identify the mechanical action event of the separation and contact between the main valve disc and the valve seat of the safety valve, and determine the corresponding action time point.

[0021] In some embodiments, after simultaneously acquiring signals from the pressure sensor and the acoustic emission sensor, the focus is on analyzing the acoustic emission signals to identify two key mechanical events: separation and contact between the main valve disc and the valve seat of the safety valve. Acoustic emission signals originate from the stress release within the material during the mechanical structure's movement. When the main valve disc separates from the valve seat, even a micrometer-level initial detachment, the change in the metal-to-metal contact state will excite a distinctive acoustic emission signal. This signal is characterized by high energy and short duration, clearly distinguishable from background noise. When the main valve disc falls back and impacts the valve seat, a stronger and more intense acoustic emission signal is generated. Its signal characteristics are clearly different from the signal during separation and can be identified through inherent properties such as signal energy intensity and duration. During the analysis, by capturing these characteristic acoustic emission signals, the starting points of the signals are precisely located—the starting point of the acoustic emission signal corresponding to the separation action is the precise time point when the valve disc and valve seat begin to separate; the starting point of the acoustic emission signal corresponding to the contact impact is the precise time point when the valve disc and valve seat complete contact. This process relies entirely on the objective characteristics of acoustic emission signals, eliminating the need for manual observation or subjective judgment. It accurately pinpoints the critical moments of action between the valve disc and valve seat, providing a precise time reference for extracting pressure parameters at the corresponding time points and effectively avoiding errors caused by human judgment in traditional methods.

[0022] Step 104: Extract pressure parameters related to action performance from the synchronously acquired pressure signals based on the action time point.

[0023] In some embodiments, after obtaining the precise opening time point when the main valve disc of the safety valve separates from the valve seat and the precise closing time point when they contact, the core pressure parameters related to the operational performance can be extracted from the continuously recorded pressure signals based on the precise time correspondence established by synchronous acquisition. The synchronously acquired pressure signals completely cover the entire process of pressurization of the pressure-bearing system, opening and depressurization of the safety valve, depressurization of the system, and closing of the safety valve. Each time point corresponds to a unique and precise pressure value, ensuring a strict match between the operational time point and the pressure data. The extracted key pressure parameters include the set pressure and the reseating pressure. The pressure value corresponding to the precise opening time point is the set pressure, which directly characterizes the critical pressure state for the safety valve to start depressurization and is the core indicator for judging whether the valve can operate in a timely manner under the preset pressure. The pressure value corresponding to the precise closing time point is the reseating pressure, which can intuitively reflect the pressure characteristics of the safety valve returning to a sealed state after depressurization and is related to the reliability and sealing performance of the valve closure. The entire extraction process does not require manual intervention for interpretation. It directly locks the target value from the pressure signal data stream based entirely on the determined operational time points, avoiding interference from human factors in parameter extraction. This method allows the extracted pressure parameters to accurately reflect the actual pressure state at the moment of valve action, greatly improving the accuracy and objectivity of parameter measurement and providing reliable data support for accurately evaluating the performance of safety valves.

[0024] Compared with related technologies, this embodiment deploys a pressure sensor for monitoring dynamic pressure changes and an acoustic emission sensor for capturing transient elastic wave signals from the mechanical structure. A synchronous data acquisition system synchronously acquires the output signals of the pressure sensor and the acoustic emission sensor. Based on the synchronously acquired acoustic emission signals, it identifies the mechanical action event of separation and contact between the main valve disc and the valve seat of the safety valve, and determines the corresponding action time point. Based on the action time point, pressure parameters related to the action performance are extracted from the synchronously acquired pressure signals. This solves the problems in related technologies where reliance on subjective human judgment and insufficient response of ordinary instruments makes it difficult to accurately capture the instantaneous valve action, resulting in limited measurement accuracy, inaccurate extraction of dynamic action-related pressure parameters, and low testing efficiency. It achieves the technical effect of improving the accuracy and objectivity of pressure parameter measurements related to the action performance of pilot-operated safety valves and increasing testing efficiency.

[0025] Figure 2 A flowchart illustrating another pilot-operated safety valve performance testing method provided in this application embodiment includes the following steps: Step 201: Install the pressure sensor on the pressure-bearing pipe at the inlet end of the safety valve.

[0026] In some embodiments, when deploying a pressure sensor for monitoring dynamic pressure changes, it must be precisely positioned on the pressure-bearing pipeline at the inlet of the safety valve, preferably in the straight pipe section before the inlet flange. This area allows the sensor to directly contact the medium flowing through the pipeline, minimizing interference from pipe bends, valves, and other structures on the pressure signal, ensuring the sensor can perceive the true dynamic changes in system pressure in real time. The selected pressure sensor must have millisecond-level fast response capability and excellent measurement accuracy, capable of sensitively capturing subtle pressure fluctuations before and after the safety valve actuation, avoiding pressure data distortion due to response delays or insufficient accuracy. During installation, the sensor must be tightly fitted to the pipe wall, and the fixing method must be firm and reliable to prevent sensor displacement due to pipeline vibration during testing, which would affect the stability of signal acquisition. The advantage of this setup is that it can acquire continuous and accurate dynamic pressure data, providing high-quality raw data support for subsequent synchronization matching with acoustic emission signals and pressure parameter extraction.

[0027] Step 202: The acoustic emission sensor is installed on a rigid structural part of the outer surface of the main valve body near the valve seat area.

[0028] In some embodiments, when deploying an acoustic emission sensor for capturing transient elastic wave signals from a mechanical structure, it should be fixed to the outer surface of the main valve body, with particular emphasis on rigid structural sections adjacent to the valve seat. The rigid structure of the main valve body reduces signal attenuation and distortion during transmission, while its proximity to the valve seat allows the sensor to capture the transient elastic waves generated when the valve disc separates from and contacts the valve seat. These elastic waves originate from the release of internal material stress caused by mechanical action and are key signals for identifying the core valve action. During installation, ensure a tight fit between the sensor and the valve body surface; reliable fixing methods such as magnetic chucks can be used to prevent loosening during testing, which could lead to signal loss or interference. The selected acoustic emission sensor should have a wide bandwidth response, covering the frequency range of elastic waves generated by the mechanical action of the valve disc and seat, effectively distinguishing the target signal from environmental noise. This setup maximizes the signal-to-noise ratio of the target signal and accurately receives acoustic emission signals related to the valve disc and seat actions, laying a solid foundation for subsequent identification of mechanical action events and determination of precise time points.

[0029] Step 203: The time synchronization accuracy of the data acquisition device meets the time alignment requirements of the pressure signal and the acoustic emission signal.

[0030] In some embodiments, time synchronization is a crucial prerequisite for ensuring the effective correlation between the two types of signals. This is because the mechanical actions such as the separation and contact between the main valve disc and the valve seat of the safety valve are instantaneous and rapid processes. Even a microsecond-level time deviation can distort the subsequent results of extracting pressure parameters based on the action time point. To achieve this, the data acquisition device must possess a high-precision synchronization triggering mechanism, using a unified and stable clock source to provide a sampling reference for both sensor channels. This ensures that the start times of the pressure signal and acoustic emission signal acquisition are completely consistent, maintaining strict time synchronization throughout the sampling process without phase difference or delay. The hardware design of the acquisition device must support multi-channel synchronous sampling capabilities to avoid the time alignment effect being affected by factors such as circuit delays and signal transmission differences between different channels. Its synchronization accuracy must reach a level capable of accurately capturing subtle time correlations in the sensor output signals, ensuring that the pressure data and acoustic emission data corresponding to each sampling point can be accurately mapped to the same time node. The beneficial effect of this setup is that it provides a reliable time basis for subsequent identification of mechanical action events based on acoustic emission signals and matching and extracting corresponding pressure parameters. It avoids test errors caused by time deviations from the source of acquisition, laying a solid foundation for improving the accuracy and reliability of the entire testing method.

[0031] Step 204: Perform real-time analysis on the acoustic emission signal to detect burst signals with energy exceeding a preset threshold.

[0032] In some embodiments, when identifying mechanical action events of the main valve disc and valve seat of a safety valve based on synchronously acquired acoustic emission signals, real-time continuous analysis of the acoustic emission signals is required. While background noise accompanies the acoustic emission signals during testing, the transient elastic waves generated during critical mechanical actions such as separation or contact between the main valve disc and valve seat create burst signals with energy significantly higher than the background noise. These signals are the core basis for identifying action events. To accurately filter out such target signals, a reasonable energy threshold needs to be pre-set. This threshold is determined comprehensively based on the background noise level of the test environment, sensor sensitivity, and the signal characteristics of the valve action, ensuring effective differentiation between real action signals and interference noise. During the analysis, the system continuously monitors the energy changes of the acoustic emission signals, dynamically comparing the real-time acquired signal energy with the preset threshold. Once a signal energy exceeding the threshold is detected and exhibits a short duration, high energy peak burst characteristic, the signal is identified as a valid signal related to the core mechanical action of the valve, preventing background noise or other irrelevant signals from interfering with action event identification. This real-time analysis method can quickly capture the key signals generated by valve action, providing a reliable signal basis for subsequent accurate determination of the action time point, improving the accuracy and efficiency of action event identification.

[0033] Step 205: Identify the start time of the sudden signal as the precise time point at which the valve disc separates from or contacts the valve seat.

[0034] In some embodiments, the start time of the burst signal is the instant when the acoustic emission signal energy jumps from below a preset threshold to above a threshold. This moment corresponds precisely to the initial instant of the mechanical action: when the main valve disc begins to separate from the valve seat, the elastic wave caused by the change in the metal contact state will form the first burst signal, and its start time is the instant of the separation action. Conversely, when the main valve disc falls back and begins to contact and impact the valve seat, a burst signal with stronger energy is generated, and its start time is the instant of the contact action. The identification of this start time is based on the abrupt change characteristics of the signal energy, requiring no manual intervention or subjective judgment. It is determined entirely by the objective properties of the signal itself and maintains strict time synchronization with the synchronously acquired pressure signal. The determined action time point can accurately reflect the true instant of the mechanical action, completely avoiding the time judgment error caused by human observation in traditional methods, and providing a highly accurate time reference for subsequently extracting performance parameters corresponding to the action time point from the pressure signal.

[0035] Step 206: Determine the pressure value corresponding to the identified valve disc separation action time point as the set pressure of the safety valve.

[0036] In some embodiments, the set pressure is a core performance parameter characterizing the pressure relief function of a pilot-operated safety valve, directly affecting whether the valve can open promptly when the system pressure reaches a preset critical value. After determining the precise action point of valve disc separation from valve seat, based on the strict time correspondence established by synchronous data acquisition, the pressure value corresponding to that time point can be accurately locked from the continuously recorded pressure signals and determined as the set pressure of the safety valve. The synchronously acquired pressure signals completely and continuously record all pressure changes in the pressure-bearing system from pressurization to before the safety valve opens. Each time point corresponds to a unique pressure data point, and the action point of valve disc separation is the initial instant of valve opening. The pressure value at this time is exactly the critical pressure at which the valve begins to relieve pressure, which can truly reflect the valve's designed opening pressure state. This extraction process is entirely based on the objective signal data and time matching relationship, eliminating the need for subjective interpretation or estimation of pressure values ​​by humans, effectively avoiding measurement deviations caused by delays in manual observation and instrument response lags in traditional methods. This significantly improves the accuracy and objectivity of set pressure measurement, making the measurement results more consistent with the actual working state of the valve, and providing core data support for accurately evaluating the safety valve's operating performance.

[0037] Step 207: Determine the pressure value corresponding to the identified valve disc contact action time point as the reseating pressure of the safety valve.

[0038] In some embodiments, reseating pressure is a key parameter for measuring whether a pilot-operated safety valve can reliably close and restore a sealed state after pressure relief, directly affecting the stability of system pressure and the valve's sealing reliability. After identifying the precise actuation point of the valve disc contacting the valve seat through acoustic emission signals, the pressure value corresponding to that time point is extracted using the precise mapping relationship between the synchronously acquired pressure signal and time, thus determining the reseating pressure of the safety valve. The actuation point of the valve disc contacting the valve seat marks the instant of initiation of the valve closing process. The pressure value at this time is the critical pressure for the valve to switch from a pressure relief state to a sealed state, objectively reflecting the pressure characteristics of the valve during closure. The synchronously acquired pressure signal ensures a deviation-free match between the actuation point and the corresponding pressure value. The entire extraction process is automatically completed based on objective data, overcoming the limitations of traditional methods that rely on manual observation of valve closing signs and subjective judgment of reseating pressure, and avoiding measurement errors caused by human factors. This makes the measurement results of reseating pressure more accurate and consistent, providing accurate and reliable data for comprehensively evaluating the closing performance of the safety valve and judging the reliability of the valve's sealing state.

[0039] Figure 3 A flowchart illustrating another pilot-operated safety valve performance testing method provided in this application embodiment includes the following steps: Step 301: Deploy a pressure sensor for monitoring dynamic changes in pressure and an acoustic emission sensor for capturing transient elastic wave signals from the mechanical structure.

[0040] Step 302: The output signals of the pressure sensor and the acoustic emission sensor are synchronously acquired through a synchronous data acquisition system.

[0041] Step 303: Based on the synchronously acquired acoustic emission signal, identify the mechanical action event of the separation and contact between the main valve disc and the valve seat of the safety valve, and determine the corresponding action time point.

[0042] Step 304: Extract pressure parameters related to action performance from the synchronously acquired pressure signals based on the action time point.

[0043] For a description of steps 301-304, please refer to the description of steps 101-104 in the above embodiment. This embodiment will not repeat them in detail.

[0044] Step 305: Generate a dynamic data map characterizing the valve's action characteristics based on the synchronously acquired pressure signal and acoustic emission signal.

[0045] In some embodiments, after completing the synchronous acquisition of pressure signals and acoustic emission signals, identification of key action time points, and extraction of core pressure parameters, a dynamic data map characterizing the valve's action characteristics is generated based on the precise time correspondence between the two types of signals. This map provides a comprehensive data visualization of the valve's performance throughout the entire process from pressure increase to pressure decrease and closure. It includes two core dimensions: the pressure-time curve and the acoustic emission signal-time curve, while also integrating the annotation of key parameters such as the precise opening time point, precise closing time point, set pressure, and reseating pressure. The pressure-time curve visually reflects the complete trend of system pressure change from pressure increase, pressure release after reaching the set pressure, to pressure decrease to the reseating pressure. Features such as the slope and plateau length of the curve can indirectly reflect dynamic information such as opening speed and stable discharge status. The acoustic emission signal-time curve clearly shows the energy fluctuations and ring count changes of the acoustic emission signal during valve operation, especially highlighting the sudden signal characteristics at the moment of key action. During the generation process, data integration technology organically combines discrete parameters with continuous signal curves, ensuring that the graphs not only present the macroscopic action flow but also highlight microscopic signal details, comprehensively and systematically reflecting the static performance indicators and dynamic characteristics of valve action. This provides an intuitive, complete, and data-rich comparative basis for subsequent performance evaluation and health trend analysis, making all information regarding valve action characteristics readily apparent.

[0046] Step 306: Compare and analyze the dynamic data spectrum with the pre-stored benchmark spectrum, and evaluate the performance status and health trend of the safety valve based on the comparison results.

[0047] In some embodiments, the pre-stored benchmark spectrum is a dynamic data spectrum generated by testing using this technical solution when the valve is in a brand-new state or has been inspected and confirmed to be in good performance. It records the benchmark of the valve's operating characteristics in a healthy state, including a standard pressure-time curve, acoustic emission signal characteristics, and threshold values ​​for various performance parameters. When assessing performance status and health trends, the newly generated dynamic data spectrum is precisely overlaid and compared with the benchmark spectrum. The assessment is achieved by quantitatively analyzing the differences between the two in key dimensions. During the comparison, attention is paid not only to the numerical deviations of static parameters such as set pressure and reseating pressure, but also to changes in dynamic characteristics, such as the slope change of the pressure curve during the opening phase (reflecting whether the opening speed has slowed down), the difference in the energy distribution of the acoustic emission signal (reflecting whether the smoothness of the operation has decreased), the offset of key action time points (reflecting whether the response performance has degraded), and whether abnormal noise or peaks not present in the benchmark spectrum appear in the acoustic emission signal (reflecting whether there are problems such as wear or jamming of internal components). By quantitatively identifying and comprehensively analyzing these differences, it is possible to accurately determine whether the current operating performance of the safety valve meets the requirements, while also capturing subtle signs of early performance degradation. This allows for the prediction of the valve's subsequent health trend and the assessment of whether there is a risk of performance deviation or failure in future operating cycles. This approach breaks through the traditional simple "qualified / unqualified" judgment model, enabling in-depth assessment of valve performance and proactive prediction of its health status. It provides core data support for condition-based predictive maintenance, allowing for the early avoidance of potential operational risks.

[0048] Figure 4 This is a schematic diagram of the structure of a pilot-operated safety valve performance testing device provided in an embodiment of this application, as shown below. Figure 4 As shown, it includes: deployment module 401, acquisition module 402, identification module 403, and extraction module 404.

[0049] Deployment module 401 is configured to deploy a pressure sensor for monitoring dynamic changes in pressure and an acoustic emission sensor for capturing transient elastic wave signals of a mechanical structure; The acquisition module 402 is configured to synchronously acquire the output signals of the pressure sensor and the acoustic emission sensor through a synchronous data acquisition system; The identification module 403 is configured to identify mechanical action events in which the main valve disc of the safety valve separates from and contacts the valve seat based on synchronously acquired acoustic emission signals, and to determine the corresponding action time point. Extraction module 404 is configured to extract pressure parameters related to action performance from the synchronously acquired pressure signal based on the action time point.

[0050] In some examples of this embodiment, the deployment module 401 is specifically configured to place the pressure sensor on the pressure-bearing pipeline at the inlet end of the safety valve; and to place the acoustic emission sensor on a rigid structural part of the outer surface of the main valve body adjacent to the valve seat area.

[0051] In some examples of this embodiment, the acquisition module 402 is specifically configured such that the time synchronization accuracy of the data acquisition device meets the time alignment requirements of the pressure signal and the acoustic emission signal.

[0052] In some examples of this embodiment, the identification module 403 is specifically configured to perform real-time analysis of the acoustic emission signal, detect burst signals with energy exceeding a preset threshold, and identify the start time of the burst signal as the precise action time point at which the valve disc and valve seat separate or come into contact.

[0053] In some examples of this embodiment, the extraction module 404 is specifically configured to determine the pressure value corresponding to the identified valve disc separation action time point as the set pressure of the safety valve; and to determine the pressure value corresponding to the identified valve disc contact action time point as the reseating pressure of the safety valve.

[0054] It should be noted that other corresponding descriptions of the functional units involved in the pilot-operated safety valve operation performance testing device provided in this embodiment can be found in [reference needed]. Figure 1 , Figure 2 and Figure 3 The corresponding descriptions in [the document] will not be repeated here.

[0055] Based on the above, Figure 1 , Figure 2 and Figure 3 The present embodiment describes a method for testing the operational performance of a pilot-operated safety valve. Correspondingly, this embodiment also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the aforementioned... Figure 1 , Figure 2 and Figure 3 This paper presents a method for testing the operating performance of a pilot-operated safety valve.

[0056] Based on the above, Figure 1 , Figure 2 and Figure 3 The present embodiment describes a method for testing the operational performance of a pilot-operated safety valve. Correspondingly, this embodiment also provides a computer program product storing a computer program that, when executed by a processor, performs the aforementioned... Figure 1 , Figure 2 and Figure 3 This paper presents a method for testing the operating performance of a pilot-operated safety valve.

[0057] Based on this understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as CD-ROM, USB flash drive, mobile hard drive, etc.) and includes several instructions to cause a computer device (such as personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of this application.

[0058] Based on the above, Figure 1 , Figure 2 and Figure 3 A method for testing the operating performance of a pilot-operated safety valve is shown, and Figure 4 To achieve the above objectives, the present application also provides an electronic device, such as a personal computer or a server, in the illustrated virtual device embodiment. This device includes a storage medium and a processor; the storage medium stores a computer program; the processor executes the computer program to implement the above-described virtual device. Figure 1 , Figure 2 and Figure 3 This paper presents a method for testing the operating performance of a pilot-operated safety valve.

[0059] In some embodiments, the aforementioned physical device may further include a user interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, etc. The user interface may include a display screen, an input unit such as a keyboard, etc., and optionally, a USB interface, a card reader interface, etc. In some embodiments, the network interface may include a standard wired interface, a wireless interface (such as a Wi-Fi interface), etc.

[0060] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the aforementioned physical device, supporting the operation of information processing programs and other software and / or programs. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software in the information processing physical device.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0062] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for testing the operational performance of a pilot-operated safety valve, characterized in that, include: Deploy pressure sensors to monitor dynamic changes in pressure and acoustic emission sensors to capture transient elastic wave signals from mechanical structures; The output signals of the pressure sensor and the acoustic emission sensor are synchronously acquired by a synchronous data acquisition system. Based on synchronously acquired acoustic emission signals, mechanical action events that occur when the main valve disc of the safety valve separates from and contacts the valve seat are identified, and the corresponding action time points are determined. Based on the action time point, extract pressure parameters related to action performance from the synchronously acquired pressure signal.

2. The method for testing the operating performance of a pilot-operated safety valve according to claim 1, characterized in that, The deployment of a pressure sensor for monitoring dynamic pressure changes and an acoustic emission sensor for capturing transient elastic wave signals from a mechanical structure includes: The pressure sensor is installed on the pressure-bearing pipe at the inlet end of the safety valve; The acoustic emission sensor is installed on a rigid structural part of the outer surface of the main valve body, near the valve seat area.

3. The method for testing the operating performance of a pilot-operated safety valve according to claim 1, characterized in that, The synchronous acquisition of the output signals of the pressure sensor and the acoustic emission sensor through the synchronous data acquisition system includes: using a data acquisition device with multi-channel synchronous sampling function to synchronously acquire the two sensor signals at a sampling rate not lower than a preset frequency; The time synchronization accuracy of the data acquisition device meets the time alignment requirements of the pressure signal and the acoustic emission signal.

4. The method for testing the operating performance of a pilot-operated safety valve according to claim 1, characterized in that, The method for identifying mechanical action events involving the separation and contact between the main valve disc and the valve seat of the safety valve based on synchronously acquired acoustic emission signals, and determining the corresponding action time points, includes: Real-time analysis of acoustic emission signals is performed to detect burst signals with energy exceeding a preset threshold; The start time of the sudden signal is identified as the precise time point at which the valve disc separates from or comes into contact with the valve seat.

5. The method for testing the operating performance of a pilot-operated safety valve according to claim 1, characterized in that, The step of extracting pressure parameters related to action performance from the synchronously acquired pressure signal based on the action time point includes: The pressure value corresponding to the identified valve disc separation action time point is determined as the set pressure of the safety valve; The pressure value corresponding to the identified valve disc contact action time point is determined as the reseating pressure of the safety valve.

6. The method for testing the operating performance of a pilot-operated safety valve according to claim 1, characterized in that, Also includes: A dynamic data spectrum characterizing the valve's action characteristics is generated based on the synchronously acquired pressure signal and acoustic emission signal; The dynamic data graph is compared and analyzed with the pre-stored baseline graph, and the performance status and health trend of the safety valve are evaluated based on the comparison results.

7. A device for testing the operating performance of a pilot-operated safety valve, characterized in that, include: The deployment module is configured to deploy a pressure sensor for monitoring dynamic changes in pressure and an acoustic emission sensor for capturing transient elastic wave signals from mechanical structures. The acquisition module is configured to synchronously acquire the output signals of the pressure sensor and the acoustic emission sensor through a synchronous data acquisition system; The identification module is configured to identify mechanical action events in which the main valve disc of the safety valve separates from and contacts the valve seat based on synchronously acquired acoustic emission signals, and to determine the corresponding action time point. The extraction module is configured to extract pressure parameters related to action performance from the synchronously acquired pressure signals based on the action time point.

8. An electronic device, characterized in that, include: At least one processor; and a memory communicatively connected to the at least one processor; The memory stores instructions that can be executed by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the pilot-operated safety valve action performance test method according to any one of claims 1-6.

9. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to execute the pilot-operated safety valve operation performance test method according to any one of claims 1-6.

10. A computer program product, characterized in that, The system includes a computer program that, when executed by a processor, implements the method for testing the actuation performance of a pilot-operated safety valve according to any one of claims 1-6.

Images