Performance monitoring device and method for hydraulic interruption module of steam turbine of nuclear power station

Abstract

The invention relates to a performance monitoring device and method for a nuclear power station steam turbine hydraulic interrupting module. The device comprises a measurement and control module, a touch screen and an industrial personal computer, the measurement and control module comprises a digital signal measurement and control module and an analog signal measurement and control module; the industrial personal computer is used for generating an off-line performance test signal under the condition that the off-line performance test instruction is received so as to indicate the digital signal measurement and control module to output working voltage to the electromagnetic valve connector, the limiting switch and the oil pressure sensor according to the off-line performance test signal; the industrial personal computer is also used for acquiring the action voltage of the electromagnetic valve connector and the limit switch acquired by the digital signal measurement and control module, and acquiring the action current of the electromagnetic valve connector and the oil pressure signal of the oil pressure sensor acquired by the analog signal measurement and control module; and determining a performance test result according to each action voltage, each action current and the oil pressure signal. The offline verification of the hydraulic interruption module can be realized, the reliability of the device is ensured, and the safe and stable operation of the steam turbine generator is ensured.

Description

Technical Field

[0001] This application relates to the field of nuclear power technology, and in particular to a performance monitoring device and method for a hydraulic trip module of a nuclear power plant turbine. Background Technology

[0002] The hydraulic trip module of a nuclear power plant turbine is the only trip protection device for a half-speed turbine. Its function is to receive trip commands from the turbine protection system in the event of an emergency that jeopardizes the safe operation of the unit, rapidly release the safety oil from each hydraulic actuator, and quickly close all valves to cut off the steam supply to the unit. The reliability of the hydraulic trip module plays a crucial role in its ability to respond to emergency signals and protect the safe and reliable operation of the turbine. Therefore, there is an urgent need for a performance monitoring device for the hydraulic trip module of a nuclear power plant turbine to achieve offline verification of the module and ensure its reliability. Summary of the Invention

[0003] Based on this, it is necessary to provide a performance monitoring device, method, computer equipment, computer-readable storage medium, and computer program product for the hydraulic trip module of a nuclear power plant turbine, which can realize offline verification of the hydraulic trip module of the nuclear power plant turbine, ensure the reliability of the device, and help ensure the safe and stable operation of the turbine generator.

[0004] In a first aspect, this application provides a performance monitoring device for a hydraulic trip module of a nuclear power plant turbine. The device includes: a measurement and control module, a touch screen, and an industrial control computer. The measurement and control module is connected to the industrial control computer, and the touch screen is also connected to the industrial control computer. The measurement and control module includes a digital signal measurement and control module and an analog signal measurement and control module.

[0005] The digital signal measurement and control module is connected to the solenoid valve connector and limit switch of the hydraulic tripping module;

[0006] The analog signal measurement and control module is connected to the solenoid valve connector and oil pressure sensor of the hydraulic shutdown module;

[0007] The touchscreen is used to receive offline performance test commands input by the user and send them to the industrial control computer.

[0008] The industrial control computer is used to generate an offline performance test signal upon receiving an offline performance test command, and send it to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, limit switch and oil pressure sensor according to the offline performance test signal;

[0009] The industrial control computer is also used to acquire the operating voltage of the solenoid valve connector and limit switch collected by the digital signal measurement and control module, and to acquire the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor collected by the analog signal measurement and control module.

[0010] The industrial computer is also used to determine the performance test results of the hydraulic shutdown module based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor.

[0011] In one embodiment, the industrial control computer is further configured to, upon receiving an offline performance test instruction, generate an offline performance test signal according to a preset cycle and send it to the digital signal measurement and control module; and determine the performance test result within the corresponding cycle based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor collected in each cycle.

[0012] In one embodiment, the offline performance test signal includes an operating condition test signal, a tripping condition test signal, and a reset condition test signal;

[0013] The industrial control computer is also used to send operating condition test signals to the digital signal measurement and control module in each cycle.

[0014] Upon receiving the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor under operating conditions, the trip condition test signal is sent to the digital signal measurement and control module.

[0015] Upon receiving the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor under tripping conditions, the reset condition test signal is sent to the digital signal measurement and control module.

[0016] Upon receiving the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor under the reset condition, the system enters the next cycle and returns to the step of sending the operating condition test signal to the digital signal measurement and control module to continue execution until the preset number of cycles is reached. Based on the operating conditions, trip conditions, and reset conditions under multiple cycles, the system determines the performance test results of the hydraulic trip module.

[0017] In one embodiment, the industrial control computer is also used to generate a pressure-switch state curve based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor under multiple operating conditions, tripping conditions, and reset conditions within multiple cycles; the touch screen is also used to display the pressure-switch state curve.

[0018] In one embodiment, there are multiple sets of solenoid valve connectors, limit switches, and oil pressure sensors; the measurement and control module is connected to multiple sets of solenoid valve connectors via a first connector; the measurement and control module is connected to multiple sets of limit switches via connectors; and the measurement and control module is connected to multiple sets of oil pressure sensors via a second connector.

[0019] In one embodiment, the industrial control computer is further configured to determine that the performance test result of the hydraulic tripping module is a pass test when a first preset number of operating voltages and operating currents in multiple sets of solenoid valve connectors meet the tripping conditions, a second preset number of operating voltages in multiple sets of limit switches meet the tripping conditions, and a third preset number of oil pressure signals in multiple sets of oil pressure sensors meet the tripping conditions.

[0020] Secondly, this application provides a performance monitoring method for a hydraulic trip module of a nuclear power plant turbine, applied to the performance monitoring device for a hydraulic trip module of a nuclear power plant turbine in the first aspect; the method includes:

[0021] Upon receiving an offline performance test instruction, an offline performance test signal is generated and sent to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, limit switch, and oil pressure sensor according to the offline performance test signal.

[0022] The digital signal measurement and control module acquires the operating voltage of the solenoid valve connector and the limit switch, and the analog signal measurement and control module acquires the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor.

[0023] The performance test results of the hydraulic shutdown module are determined based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor.

[0024] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0025] Upon receiving an offline performance test instruction, an offline performance test signal is generated and sent to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, limit switch, and oil pressure sensor according to the offline performance test signal.

[0026] The digital signal measurement and control module acquires the operating voltage of the solenoid valve connector and the limit switch, and the analog signal measurement and control module acquires the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor.

[0027] The performance test results of the hydraulic shutdown module are determined based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor.

[0028] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0029] Upon receiving an offline performance test instruction, an offline performance test signal is generated and sent to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, limit switch, and oil pressure sensor according to the offline performance test signal.

[0030] The digital signal measurement and control module acquires the operating voltage of the solenoid valve connector and the limit switch, and the analog signal measurement and control module acquires the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor.

[0031] The performance test results of the hydraulic shutdown module are determined based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor.

[0032] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0033] Upon receiving an offline performance test instruction, an offline performance test signal is generated and sent to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, limit switch, and oil pressure sensor according to the offline performance test signal.

[0034] The digital signal measurement and control module acquires the operating voltage of the solenoid valve connector and the limit switch, and the analog signal measurement and control module acquires the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor.

[0035] The performance test results of the hydraulic shutdown module are determined based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor.

[0036] The aforementioned performance monitoring device, method, computer equipment, computer-readable storage medium, and computer program product for a nuclear power plant turbine hydraulic trip module, wherein the industrial control computer of the device, upon receiving an offline performance test command input by the user from a touchscreen, generates an offline performance test signal and sends it to a digital signal measurement and control module. The digital signal measurement and control module outputs operating voltages to the solenoid valve connector, limit switch, and oil pressure sensor based on the offline performance test signal, and collects the operating voltages of the solenoid valve connector and limit switch. The analog signal measurement and control module collects the operating current of the solenoid valve connector and the oil pressure signal from the oil pressure sensor. The industrial control computer, based on the operating voltage of the solenoid valve connector... The performance test results of the hydraulic trip module are determined by measuring the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor. This allows for offline performance monitoring of the hydraulic trip module without intervention in the unit's operating system, completing performance verification in an offline state. This avoids downtime and rework caused by online test failures, reduces path time, and improves unit operation and maintenance efficiency. Furthermore, by using the operating voltage collected by the digital signal measurement and control module and the operating current and oil pressure signals collected by the analog signal measurement and control module, the entire process from command to test result is automated, ensuring the reliability of the hydraulic trip module and contributing to the safe and stable operation of the turbine generator. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a structural block diagram of a performance monitoring device for a hydraulic shutdown module of a nuclear power plant turbine, as shown in one embodiment.

[0039] Figure 2 This is a flowchart illustrating a performance monitoring method for a hydraulic shutdown module of a nuclear power plant turbine, as shown in one embodiment.

[0040] Figure 3 This is an interface diagram of the intelligent analysis software in one embodiment;

[0041] Figure 4 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0043] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0044] The performance monitoring device for the hydraulic shutdown module of a nuclear power plant turbine provided in this application embodiment, such as Figure 1 As shown, the device includes: a measurement and control module 101, a touch screen 102, and an industrial computer 103. The measurement and control module 101 is connected to the industrial computer 103, and the touch screen 102 is also connected to the industrial computer 103. The measurement and control module 101 includes a digital signal measurement and control module 104 and an analog signal measurement and control module 105. The digital signal measurement and control module 104 is connected to the solenoid valve connector 106 and the limit switch 107 of the hydraulic tripping module (not shown). The analog signal measurement and control module 105 is connected to the solenoid valve connector 106 and the oil pressure sensor 108 of the hydraulic tripping module. The touch screen 102 is used to receive offline performance test commands input by the user and send them to the industrial computer 103. The industrial computer 103 is used to generate offline performance test signals upon receiving the offline performance test commands. The signal is sent to the digital signal measurement and control module 104 to instruct the digital signal measurement and control module 104 to output working voltage to the solenoid valve connector 106, limit switch 107 and oil pressure sensor 108 according to the offline performance test signal; the industrial control computer 103 is also used to acquire the operating voltage of the solenoid valve connector 106 and limit switch 107 collected by the digital signal measurement and control module 104, and to acquire the operating current of the solenoid valve connector 106 and the oil pressure signal of the oil pressure sensor 108 collected by the analog signal measurement and control module 105; the industrial control computer 103 is also used to determine the performance test result of the hydraulic trip module according to the operating voltage of the solenoid valve connector 106, the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106 and the oil pressure signal of the oil pressure sensor 108.

[0045] The hydraulic trip module is a core safety protection device for the turbine of a nuclear power plant. In emergency situations, it receives a trip command, releases safety oil to quickly close the valve, cuts off the steam supply to the unit, and achieves an emergency shutdown. The hydraulic trip module is equipped with a solenoid valve connector 106, a limit switch 107, and an oil pressure sensor 108.

[0046] The solenoid valve connector 106 is the electrical interface component in the hydraulic trip module that connects the trip solenoid valve and the performance testing device. The limit switch 107 is a position status monitoring element in the hydraulic trip module. When the component moves to a preset position, it triggers an electric shock state reversal, serving as a key feedback element for verifying the trip logic. For example, the hydraulic trip module is equipped with six limit switches 107: three for monitoring the valve core position of the trip solenoid valve, two for monitoring the main steam valve, and one for monitoring the pressure release position of the safety oil pipeline. The oil pressure sensor 108 is a pressure monitoring element in the hydraulic trip module, used to collect the pressure value of the safety oil pipeline in real time and convert it into an analog voltage signal output. For example, four oil pressure sensors 108 are installed on the main safety oil pipeline, and two are installed on branch oil lines.

[0047] The touchscreen 102 includes a human-machine interface that can receive offline performance test commands input by the user. For example, the human-machine interface includes a parameter input area and a test start control. In response to the user's input operation in the parameter input area, it obtains the test parameters input by the user; in response to the trigger operation of the test start control, it generates offline performance test commands and sends them to the digital signal measurement and control module 104.

[0048] The measurement and control module 101 includes a digital signal measurement and control module 104 and an analog signal measurement and control module 105. The digital signal measurement and control module 104 is responsible for the output and acquisition of digital signals, while the analog signal measurement and control module 105 is responsible for the acquisition of analog signals, capable of acquiring continuously changing current and voltage information. (Reference) Figure 1 The digital signal measurement and control module 104 is connected to the 220V main power supply 110 via a 24V switching power supply group 109. The 24V switching power supply group 109 provides a stable power supply for the entire device. Connected to the main power supply 110, it provides the necessary power voltage to the industrial control computer 103 and other external devices through circuit protection and voltage regulation. Upon receiving an offline performance test signal from the touchscreen 102, the digital signal measurement and control module 104 outputs a 24V operating voltage to the solenoid valve connector 106, limit switch 107, and oil pressure sensor 108, and collects the operating voltages of the solenoid valve connector 106 and limit switch 107. Simultaneously, the analog signal measurement and control module 105 collects the operating current of the solenoid valve connector 106 and the oil pressure signal from the oil pressure sensor 108. The operating voltage reflects the power supply status of the corresponding solenoid valve and limit switch 107, while the operating current reflects the real-time current change of the solenoid valve.

[0049] The industrial control computer 103 uses the collected operating voltage, operating current and oil pressure signals of each device to comprehensively judge the operating logic, response speed and component reliability of the hydraulic shutdown module, and outputs the result of whether the performance test is qualified or unqualified.

[0050] The aforementioned performance monitoring device for the hydraulic trip module of a nuclear power plant turbine includes an industrial control computer 103 that, upon receiving an offline performance test command input by the user from the touchscreen 102, generates an offline performance test signal and sends it to the digital signal measurement and control module 104. The digital signal measurement and control module 104 outputs operating voltages to the solenoid valve connector 106, limit switch 107, and oil pressure sensor 108 based on the offline performance test signal, and collects the operating voltages of the solenoid valve connector 106 and limit switch 107. The analog signal measurement and control module 105 collects the operating current of the solenoid valve connector 106 and the oil pressure signal from the oil pressure sensor 108. The industrial control computer 103 then uses the operating voltage of the solenoid valve connector 106 as the basis for its measurement and control. The performance test results of the hydraulic trip module are determined by measuring the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108. In this way, the performance monitoring of the hydraulic trip module does not require intervention in the unit's operating system. The performance verification of the hydraulic trip module is completed offline, avoiding downtime and rework caused by online test failures, reducing path time, and improving the unit's operation and maintenance efficiency. The operating voltage collected by the digital signal measurement and control module 104 and the operating current and oil pressure signal collected by the analog signal measurement and control module 105 realize the fully automated verification from command to test result, ensuring the reliability of the hydraulic trip module and helping to ensure the safe and stable operation of the turbine generator.

[0051] In an exemplary embodiment, the industrial control computer 103 is further configured to generate an offline performance test signal according to a preset cycle when receiving an offline performance test instruction, and send it to the digital signal measurement and control module 104; and determine the performance test result in the corresponding cycle based on the operating voltage of the solenoid valve connector 106, the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108 collected in each cycle.

[0052] The industrial control computer 103 can provide a cyclic testing function. When it receives an offline performance test instruction, it generates an offline performance test signal according to a preset cycle and sends it to the digital signal measurement and control module 104. For example, the preset cycle is 30 seconds. Every 30 seconds, it sends an offline performance test signal to the digital signal measurement and control module 104, thereby realizing the automatic repeated execution of offline testing.

[0053] In this way, for each cycle, the operating voltage, operating current, and oil pressure signals of each device collected in the current cycle can be used to determine the performance test results in the current cycle.

[0054] In some embodiments, the final performance test result can be obtained by utilizing the performance test results across multiple cycles. For example, if the performance test results exceeding a preset proportion across multiple cycles indicate that the test is qualified, the final performance test result is determined to be qualified.

[0055] In this embodiment, the industrial control computer 103 automatically generates and sends offline performance test signals according to a preset cycle, realizing automatic cyclic execution of offline performance tests and improving test efficiency; the reliability of the results is improved by using the performance test results of multiple cycles; in addition, through long-term continuous automatic testing, cumulative faults such as solenoid valve aging, contact fatigue, and oil pressure leakage are effectively captured, providing data support for reliability verification.

[0056] In an exemplary embodiment, the offline performance test signals include operating condition test signals, tripping condition test signals, and reset condition test signals; the industrial control computer 103 is further configured to send the operating condition test signals to the digital signal measurement and control module 104 in each cycle; and to send the tripping condition test signals to the digital signal measurement and control module 104 upon receiving the operating voltage of the solenoid valve connector 106, the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108 under the operating condition; and to send the tripping condition test signals to the digital signal measurement and control module 104 upon receiving the operating voltage of the solenoid valve connector 106, the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108 under the tripping condition. In the case of a reset condition test signal, the reset condition test signal is sent to the digital signal measurement and control module 104. Upon receiving the operating voltage of the solenoid valve connector 106, the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108 under the reset condition, the next cycle begins, and the process returns to the step of sending the operating condition test signal to the digital signal measurement and control module 104 to continue execution until the number of cycles reaches the preset number. Based on the operating condition, trip condition, and reset condition under multiple cycles, the operating voltage of the solenoid valve connector 106, the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108 are determined, the performance test results of the hydraulic tripping module are determined.

[0057] Depending on the specific testing requirements, offline performance test signals can include various types. Operating condition test signals refer to test signals simulating the operating conditions of the hydraulic shut-off module. For example, operating condition test signals are used to control the digital signal measurement and control module 104 to output a 24V power supply voltage, enabling the solenoid valve to close, the limit switch 107 to operate normally, and the oil pressure sensor 108 to function properly.

[0058] The tripping condition test signal refers to the test signal that simulates the tripping condition of the hydraulic tripping module. For example, the tripping condition test signal is used to control the digital signal measurement and control module 104 to cut off the power supply to the solenoid valve (such as outputting 0V), trigger the solenoid valve to act, release oil pressure, and synchronously collect various signals during the tripping process.

[0059] The reset condition test signal refers to the test signal that simulates the reset condition of the hydraulic shutdown module. For example, the reset condition test signal is used to control the digital signal measurement and control module 104 to output 24V power to the solenoid valve again, so that the hydraulic shutdown module can build up the rated oil pressure, and the limit switch 107 and oil pressure sensor 108 return to the state before operation, in preparation for the next cycle.

[0060] Within each cycle, the corresponding offline performance tests are performed sequentially according to the operating condition, tripping condition, and reset condition. Upon receiving the acquisition signal of the corresponding condition (such as operating voltage, operating current, oil pressure signal, etc.), the test signal of the next condition is sent. After each operating condition is completed, the performance test of the next cycle begins. The performance test results of the hydraulic tripping module are obtained by using the acquisition signals of multiple cycles.

[0061] In this embodiment, the offline performance test signal is divided into three operating conditions: operation, tripping, and reset. The test signals for each operating condition are sent out in sequence to accurately simulate the working process of the hydraulic tripping module in the real unit, ensuring that the test conditions are consistent with the actual operating conditions and improving the accuracy of performance testing.

[0062] In an exemplary embodiment, the industrial control computer 103 is further configured to generate a pressure-switch state curve based on the operating voltage of the solenoid valve connector 106, the operating voltage of the limit switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108 under multiple operating conditions, tripping conditions, and reset conditions within multiple cycles; the touch screen 102 is further configured to display the pressure-switch state curve.

[0063] Among them, for each action voltage, action current and oil pressure signal collected in the same cycle, according to the time fitting curve, the pressure and switch state curve can include voltage state curve, oil pressure state curve and switch state curve.

[0064] For example, by utilizing the operating voltage of the solenoid valve connector 106 and the operating voltage of the limit switch 107 under various operating conditions within multiple cycles, a voltage state curve varying over time can be constructed. For instance, the horizontal axis represents time, and the vertical axis represents the operating voltage. Different colored curves can be used to distinguish the voltage state curves of different solenoid valve connectors 106 and limit switches 107. The voltage state curve reflects the periodic changes of the corresponding solenoid valve connector 106 or limit switch 107 under different operating conditions.

[0065] By utilizing the oil pressure signals from the oil pressure sensor 108 under various operating conditions within multiple cycles, an oil pressure state curve varying over time is constructed. For example, the horizontal axis represents time, and the vertical axis represents oil pressure. Oil pressure state curves from different oil pressure sensors 108 can be distinguished by different colors. The oil pressure state curve reflects the periodic changes of the corresponding oil pressure sensor 108 under different operating conditions.

[0066] By utilizing the operating voltages of the solenoid valve connector 106 and the limit switch 107 under various operating conditions within multiple cycles, the switching states of the solenoid valve and limit switch 107 within the corresponding cycles are determined. Using these switching states, a switching state curve varying over time is constructed. For example, the horizontal axis represents time, and the vertical axis represents the switching state (e.g., 1 for closed state, 0 for open state). Different colored curves can be used to distinguish the switching state curves of different solenoid valve connectors 106 and limit switches 107. The switching state curve reflects the periodic changes of the corresponding solenoid valve connector 106 or limit switch 107 under different operating conditions.

[0067] The voltage status curve, oil pressure status curve, and switch status curve can be displayed in different display areas or on different display pages via the touch screen 102.

[0068] In this embodiment, by collecting various signals under multiple operating conditions within multiple cycles, corresponding pressure and switching state curves are generated, transforming abstract voltage, current, and oil pressure data into intuitive and visual waveforms. This facilitates a quick understanding of the hydraulic shutdown module's operating patterns and oil pressure variation characteristics under different operating conditions.

[0069] In one exemplary embodiment, there are multiple sets of solenoid valve connectors 106, limit switches 107, and oil pressure sensors 108; the measurement and control module 101 is connected to multiple sets of solenoid valve connectors 106 via a first connector; the measurement and control module 101 is connected to multiple sets of limit switches 107 via a connector; and the measurement and control module 101 is connected to multiple sets of oil pressure sensors 108 via a second connector.

[0070] The hydraulic shut-off module may include multiple sets (e.g., 3 sets) of solenoid valve connectors 106, multiple sets (e.g., 6 sets) of limit switches 107, and multiple sets (e.g., 6 sets) of oil pressure sensors 108. The multiple sets of solenoid valve connectors 106 correspond to multiple solenoid valves and are used to transmit the working voltage of the solenoid valves and to provide feedback on the operating voltage and operating current.

[0071] refer to Figure 1The measurement and control module 101 is connected to multiple sets of solenoid valve connectors 106 via a first connector 111; the measurement and control module 101 is connected to multiple sets of limit switches 107 via a connector 112; and the measurement and control module 101 is connected to multiple sets of oil pressure sensors 108 via a second connector 113. For example, the first connector 111 can be a 5-pin connector, the second connector 113 can be a 6-pin connector, and the connector 112 can be an 18-pin connector.

[0072] refer to Figure 1 The hydraulic tripping module also includes an isolation module 114, which is connected to the measurement and control module 101 and multiple sets of solenoid valve connectors 106. Specifically, the isolation module 114 is used to isolate digital and analog signals acquired from the solenoid valve connectors 106 to enhance the stability and safety of the system. In some embodiments, the isolation module 114 can convert the digital output and analog input signals of the industrial control computer 103 into levels suitable for external devices (such as solenoid valve connectors 106) and transmit the isolated signals from the external devices to the industrial control computer 103.

[0073] In this embodiment, by configuring dedicated connectors for each of the multiple sets of solenoid valve connectors 106, limit switches 107, and oil pressure sensors 108, it is ensured that all external devices can be stably connected to the performance testing device, thus guaranteeing the stability and accuracy of the signals.

[0074] In an exemplary embodiment, the industrial control computer 103 is further configured to determine that the performance test result of the hydraulic tripping module is a pass test when there are a first preset number of operating voltages and operating currents in multiple sets of solenoid valve connectors 106 that meet the tripping conditions, a second preset number of operating voltages in multiple sets of limit switches 107 that meet the tripping conditions, and a third preset number of oil pressure signals in multiple sets of oil pressure sensors 108 that meet the tripping conditions.

[0075] The tripping condition refers to the preset core criteria for determining the pass / fail status of the solenoid valve connector 106, limit switch 107, and oil pressure sensor 108 of the hydraulic tripping module. Meeting the tripping condition indicates that after receiving the corresponding test command, the power supply to each external device is normally cut off and the mechanical operation is normal.

[0076] The first preset number of groups refers to the number of groups that meet the tripping conditions, indicating the minimum threshold number of groups required to meet the tripping conditions. For example, if there are 3 groups of solenoid valve connectors 106, the first preset number of groups can be 2 groups. The first preset number of groups can be determined based on the number of groups of solenoid valve connectors 106. Similarly, the second preset number of groups indicates the minimum threshold number of groups required to meet the tripping conditions, and can be determined based on the number of groups of limit switches 107; the third preset number of groups indicates the minimum threshold number of groups required to meet the tripping conditions, and can be determined based on the number of groups of oil pressure sensors 108.

[0077] If all external devices meet the tripping conditions, the performance test result is determined to be a pass, indicating that the tripping logic, action performance, and oil pressure relief of each external module meet the requirements.

[0078] In this embodiment, by pre-setting the number of groups that meet the tripping conditions, it is determined whether the corresponding solenoid valve connector 106, limit switch 107, and oil pressure sensor 108 meet the tripping conditions, ensuring that the judgment logic of different test batches is consistent and meets the standardized requirements for the performance testing of hydraulic tripping modules.

[0079] In one exemplary embodiment, such as Figure 2 As shown, a performance monitoring method for a hydraulic trip module of a nuclear power plant turbine is provided, which is applied to... Figure 1 The industrial control computer 103 includes the following steps 202 to 206. Wherein:

[0080] Step 202: Upon receiving an offline performance test instruction, generate an offline performance test signal and send it to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, limit switch and oil pressure sensor according to the offline performance test signal.

[0081] Step 204: Obtain the operating voltage of the solenoid valve connector and the limit switch collected by the digital signal measurement and control module, and obtain the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor collected by the analog signal measurement and control module.

[0082] Step 206: Determine the performance test results of the hydraulic shutdown module based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal from the oil pressure sensor.

[0083] The touchscreen 102 includes a human-machine interface that can receive offline performance test commands input by the user. For example, the human-machine interface includes a parameter input area and a test start control. In response to the user's input operation in the parameter input area, it obtains the test parameters input by the user; in response to the trigger operation of the test start control, it generates offline performance test commands and sends them to the digital signal measurement and control module 104.

[0084] The measurement and control module 101 includes a digital signal measurement and control module 104 and an analog signal measurement and control module 105. The digital signal measurement and control module 104 is responsible for the output and acquisition of digital signals, while the analog signal measurement and control module 105 is responsible for the acquisition of analog signals, capable of acquiring continuously changing current and voltage information. (Reference) Figure 1The digital signal measurement and control module 104 is connected to the 220V main power supply 110 via a 24V switching power supply group 109. The 24V switching power supply group 109 provides a stable power supply for the entire device. Connected to the main power supply 110, it provides the necessary power voltage to the industrial control computer 103 and other external devices through circuit protection and voltage regulation. Upon receiving an offline performance test signal from the touchscreen 102, the digital signal measurement and control module 104 outputs a 24V operating voltage to the solenoid valve connector 106, limit switch 107, and oil pressure sensor 108, and collects the operating voltages of the solenoid valve connector 106 and limit switch 107. Simultaneously, the analog signal measurement and control module 105 collects the operating current of the solenoid valve connector 106 and the oil pressure signal from the oil pressure sensor 108. The operating voltage reflects the power supply status of the corresponding solenoid valve and limit switch 107, while the operating current reflects the real-time current change of the solenoid valve.

[0085] The industrial control computer 103 uses the collected operating voltage, operating current and oil pressure signals of each device to comprehensively judge the operating logic, response speed and component reliability of the hydraulic shutdown module, and outputs the result of whether the performance test is qualified or unqualified.

[0086] The above-described performance monitoring method for the hydraulic tripping module of a nuclear power plant turbine involves the industrial control computer 103 generating an offline performance test signal and sending it to the digital signal measurement and control module 104 upon receiving an offline performance test command input by the user from the touch screen 102. The digital signal measurement and control module 104 outputs operating voltages to the solenoid valve connector 106, limit switch 107, and oil pressure sensor 108 based on the offline performance test signal, and collects the operating voltages of the solenoid valve connector 106 and limit switch 107. The analog signal measurement and control module 105 collects the operating current of the solenoid valve connector 106 and the oil pressure signal of the oil pressure sensor 108. The industrial control computer 103 then calculates the operating voltage based on the operating voltage of the solenoid valve connector 106, the limit switch 107, and the oil pressure signal of the oil pressure sensor 108. The performance test results of the hydraulic trip module are determined by the operating voltage of the position switch 107, the operating current of the solenoid valve connector 106, and the oil pressure signal of the oil pressure sensor 108. In this way, the performance monitoring of the hydraulic trip module does not require intervention in the unit's operating system. The performance verification of the hydraulic trip module is completed offline, avoiding downtime and rework caused by online test failures, reducing path time, and improving unit operation and maintenance efficiency. The operating voltage collected by the digital signal measurement and control module 104 and the operating current and oil pressure signal collected by the analog signal measurement and control module 105 realize the fully automated verification from command to test result, ensuring the reliability of the hydraulic trip module and helping to ensure the safe and stable operation of the turbine generator.

[0087] To illustrate in detail the performance monitoring device and method for the hydraulic tripping module of a nuclear power plant turbine in this solution, a most detailed embodiment is described below:

[0088] refer to Figure 1 This system is used for performance monitoring of the hydraulic trip module of a nuclear power plant turbine. The system includes: an industrial control computer 103 (manual computer 103 as the main control device), a touchscreen 102 (a human-machine interface providing a way for users to interact with the industrial control computer 103, input commands, set parameters, and view real-time data and system status), an isolation module 114 (used to isolate electrical signals between the industrial control computer 103 and external devices to enhance system stability and safety), a digital signal measurement and control module 104 (providing operating voltage to the solenoid valve connector 106, limit switch 107, and oil pressure sensor 108, and acquiring relevant operating voltages, transmitting the acquired signals to the industrial control computer 103 for signal processing), and a digital signal measurement and control module 104 (providing operating voltage to the solenoid valve connector 106, limit switch 107, and oil pressure sensor 108, and acquiring the acquired signals for signal processing). Analog signal measurement and control module 105: Collects the operating current of the solenoid valve connector 106 and the oil pressure signal of the oil pressure sensor 108, and transmits the collected signals to the industrial control computer 103 for signal processing. First and second aviation connectors 111 and 113: Provide reliable electrical connections and have protective performance, suitable for long-term use in field environments. 24V switching power supply group 109: Provides a stable power supply for the entire performance testing device, connects to the main power supply 110, and provides the required power voltage to the industrial control computer 103, isolation module 114, and other external equipment through circuit protection and voltage regulation control.

[0089] The performance monitoring device can collect various types of signals, including voltage signals (meeting at least the operating voltage of 24VDC and the operating voltage of 0-24V for the solenoid valve connector 106 and limit switch 107, and the operating range of 0-6V for the oil pressure signals of the six oil pressure sensors 108), and current signals (the operating current signals of the three solenoid valve connectors 106). It can also store and analyze historical trends. The device can provide six stable 24V DC power supplies for the six limit switches 107, and three stable 24V DC power supplies for the three solenoid valve connectors 106. Each of the three power supply circuits has an independent switch to allow for individual power-off functionality for the limit switches 107. It can also provide six stable DC power supplies and six electrical interface plugs (L-type plugs) for the six oil pressure sensors 108.

[0090] The condition monitoring loop needs to monitor the operating status of three solenoid valve connectors 106 and six limit switches 107, monitor the operating current of the three solenoid valve connectors 106, and monitor the six oil pressure sensors 108 (0-6V operating range). Table 1 shows the measured resources in the condition monitoring loop.

[0091] Table 1. List of resources under test in the condition monitoring loop.

[0092]

[0093] The industrial computer 103 is equipped with intelligent analysis software, which enables signal acquisition, display, storage, single-channel protection testing, automatic analysis of test results, terminal interfaces, and testing devices. For example... Figure 3 The diagram shows the interface of the intelligent analysis software in some embodiments. The signal acquisition function includes: acquiring the operating voltage of three solenoid valve connectors 106, the operating voltage of six limit switches 107, the operating current of the three solenoid valve connectors 106, and the oil pressure signals from six oil pressure sensors 108. The display function is implemented through a touchscreen 102: supporting a display resolution of 1024×768 or higher; displaying a status monitoring screen, including the status of the solenoid valve connectors 106 and limit switches 107; displaying a simulation parameter configuration interface for setting system parameters; displaying a test operation screen for triggering and monitoring the test process; and displaying a data recording and historical data viewing interface for viewing and analyzing the acquired data. The storage function provides more than 512GB of storage space for saving the acquired data; supports mobile data storage, allowing data to be exported to external storage devices or cloud storage. The single-channel protection test function enables sequential, time-based operation of the three solenoid valve connectors 106; and records the operating status of the three solenoid valve connectors 106 and the corresponding operating status of the limit switches 107. Automatic Experimental Result Analysis Function: Automatically analyzes experimental results, extracting key indicators and conclusions. Terminal Interface and Detection Device: Provides terminal interfaces for connecting the feedback voltages of three solenoid valve connectors 106, six limit switches 107, and six hydraulic pressure sensors 108. The detection device includes computing software and display functions, meeting the requirements for signal acquisition, experimental operation, and data processing. The detection device needs to provide terminal interfaces to connect to the three solenoid valve connectors 106, six limit switches 107, and six hydraulic pressure sensors 108, ensuring the feedback voltage meets the requirements for voltage and current signal acquisition.

[0094] The aforementioned performance monitoring device and method for the hydraulic trip module of a nuclear power plant turbine enables offline performance testing, overcoming the traditional reliance on unit tripping and GFR (Governor Fluid Regulating) testing. The limitations of the turbine regulating oil system's operation allow for the adjustment work to be moved forward to the overhaul preparation stage, shortening the main overhaul schedule and pioneering an offline maintenance mode for the turbine trip module. It enables preventative testing of core components of the trip module (solenoid valves, limit switches), exposing potential problems such as installation deviations and poor contact in advance, reducing the risk of on-site fault handling. Through intelligent analysis software, it records the sequential action sequence of multiple solenoid valve groups, the action status of multiple solenoid valve groups, and the action status of limit switches, and automatically analyzes the test results to extract key indicators and conclusions, achieving a high degree of automation and intelligence. The device can collect various types of signals, including voltage and current signals, and store and analyze historical trends, facilitating fault location and historical tracing. This significantly reduces economic costs, greatly improves work efficiency, reduces manpower hours, saves main overhaul schedule time, increases nuclear power unit power generation, and creates significant economic benefits.

[0095] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0096] In one exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 4As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When executed by the processor, the computer program implements a performance monitoring method for a hydraulic shutdown module of a nuclear power plant turbine. The display unit is used to form a visually visible image and can be a display screen, projection device, or virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0097] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0098] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0099] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0100] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0101] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0102] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A performance monitoring device for a hydraulic trip module of a nuclear power plant turbine, characterized in that, The device includes: a measurement and control module, a touch screen, and an industrial control computer. The measurement and control module is connected to the industrial control computer, and the touch screen is also connected to the industrial control computer. The measurement and control module includes a digital signal measurement and control module and an analog signal measurement and control module. The digital signal measurement and control module is connected to the solenoid valve connector and limit switch of the hydraulic shutdown module; The analog signal measurement and control module is connected to the solenoid valve connector and oil pressure sensor of the hydraulic shutdown module. A touchscreen is used to receive offline performance test commands input by the user and send them to the industrial control computer; The industrial control computer is used to generate an offline performance test signal upon receiving the offline performance test instruction and send it to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, the limit switch and the oil pressure sensor according to the offline performance test signal. The industrial control computer is also used to acquire the operating voltage of the solenoid valve connector and the limit switch collected by the digital signal measurement and control module, and to acquire the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor collected by the analog signal measurement and control module. The industrial control computer is also used to determine the performance test results of the hydraulic shutdown module based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor.

2. The apparatus according to claim 1, characterized in that, The industrial control computer is also used to generate an offline performance test signal according to a preset cycle when it receives the offline performance test instruction, and send it to the digital signal measurement and control module; and determine the performance test result in the corresponding cycle based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor collected in each cycle.

3. The apparatus according to claim 2, characterized in that, The offline performance test signals include operating condition test signals, tripping condition test signals, and reset condition test signals; The industrial control computer is also used to send the operating condition test signal to the digital signal measurement and control module in each cycle. Upon receiving the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor under operating conditions, the trip condition test signal is sent to the digital signal measurement and control module. Upon receiving the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor under the trip condition, the reset condition test signal is sent to the digital signal measurement and control module. Upon receiving the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor under the reset condition, the system enters the next cycle and returns to the step of sending the operating condition test signal to the digital signal measurement and control module to continue execution until the cycle reaches a preset number. Based on the operating conditions, trip conditions, and reset conditions under multiple cycle periods, the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor are determined, the performance test results of the hydraulic tripping module are determined.

4. The apparatus according to claim 3, characterized in that, The industrial control computer is also used to generate a pressure-switch state curve based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor under multiple operating conditions, tripping conditions, and reset conditions within multiple cycles; the touch screen is also used to display the pressure-switch state curve.

5. The apparatus according to claim 1, characterized in that, The solenoid valve connector, the limit switch, and the oil pressure sensor are each in multiple sets; the measurement and control module is connected to multiple sets of solenoid valve connectors via a first connector; the measurement and control module is connected to multiple sets of limit switches via a connector; and the measurement and control module is connected to multiple sets of oil pressure sensors via a second connector.

6. The apparatus according to claim 5, characterized in that, The industrial control computer is also used to determine that the performance test result of the hydraulic tripping module is a pass test when there are a first preset number of operating voltages and operating currents in multiple sets of solenoid valve connectors that meet the tripping conditions, a second preset number of operating voltages in multiple sets of limit switches that meet the tripping conditions, and a third preset number of oil pressure signals in multiple sets of oil pressure sensors that meet the tripping conditions.

7. A performance monitoring method for a hydraulic trip module of a nuclear power plant turbine, characterized in that, The method is applied to the performance monitoring device for a hydraulic trip module of a nuclear power plant turbine as described in any one of claims 1 to 6; the method includes: Upon receiving an offline performance test instruction, an offline performance test signal is generated and sent to the digital signal measurement and control module to instruct the digital signal measurement and control module to output working voltage to the solenoid valve connector, limit switch, and oil pressure sensor according to the offline performance test signal. The operating voltages of the solenoid valve connector and the limit switch collected by the digital signal measurement and control module are acquired, and the operating current of the solenoid valve connector and the oil pressure signal of the oil pressure sensor are acquired by the analog signal measurement and control module. The performance test results of the hydraulic shutdown module are determined based on the operating voltage of the solenoid valve connector, the operating voltage of the limit switch, the operating current of the solenoid valve connector, and the oil pressure signal of the oil pressure sensor.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method of claim 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method of claim 7.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the method of claim 7.

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