Method and device for evaluating service life of insulated water diversion pipe of nuclear power generator and electronic equipment
By determining the activation energy and accelerating the aging test of the insulating water pipe of the nuclear power generator, and combining performance tests of multiple evaluation dimensions, the problem of low accuracy in life assessment in the existing technology has been solved, and more accurate life assessment has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA GENERAL NUCLEAR POWER OPERATION
- Filing Date
- 2025-12-16
- Publication Date
- 2026-04-28
AI Technical Summary
The accuracy of existing methods for assessing the lifespan of insulated water pipes in nuclear power generators is low, as they rely heavily on the experience of staff, resulting in inaccurate assessment results.
By determining the activation energy of the nuclear power generator's insulating water inlet pipe, the accelerated aging test time is determined based on the activation energy and the preset service life. Accelerated aging tests are then conducted, and the performance of the aged water inlet pipe is tested on multiple evaluation dimensions to ultimately determine its service life assessment results.
This improved the accuracy of the life assessment of the insulated water inlet pipes of nuclear power generators, ensuring the scientific validity and reliability of the assessment results.
Smart Images
Figure CN121933243A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of nuclear power technology, and in particular relates to a method, apparatus, computer-readable storage medium and electronic equipment for assessing the life of an insulated water inlet pipe for a nuclear power generator. Background Technology
[0002] In the field of nuclear power technology, the insulating water inlet pipe of a nuclear power generator serves as a key sealed and flow-guiding component, undertaking a dual function: firstly, it acts as a flow channel for the stator coil cooling water, ensuring efficient heat dissipation; secondly, it provides a high-voltage electrical insulation barrier, isolating the generator from voltages reaching thousands of volts inside. Nuclear power generator insulating water inlet pipes are typically made of polytetrafluoroethylene (PTFE). PTFE possesses excellent high-temperature resistance, chemical corrosion resistance, electrical insulation properties, and self-lubricating properties, ensuring the heat dissipation and insulation functions of the water inlet pipe, and improving the operational safety and reliability of the generator.
[0003] In nuclear power generators, the long-term operating temperature of the insulated water inlet pipes is around 70℃, the medium inside the pipes is pure water, and they also need to withstand thousands of volts of AC voltage and vibration, facing a harsh operating environment. Temperature is one of the core factors in the aging of polytetrafluoroethylene (PTFE). Under operating temperatures, the grain size of PTFE increases, leading to increased brittleness of the material; at the same time, with trace amounts of oxygen in the water, oxidation aging easily occurs. Failure of the insulated water inlet pipes of nuclear power generators will directly lead to cooling water leakage and high-voltage breakdown, seriously threatening the safe and stable operation of the generator. Therefore, it is necessary to accurately assess the service life of the insulated water inlet pipes of nuclear power generators to avoid their exceeding their service life. However, in the current technology, the service life assessment of the insulated water inlet pipes of nuclear power generators is mainly based on the personal experience of relevant personnel, resulting in low accuracy of the assessment results. Summary of the Invention
[0004] In view of this, embodiments of this application provide a method, apparatus, computer-readable storage medium, and electronic device for assessing the lifespan of insulated water inlet pipes of nuclear power generators, in order to solve the problem of low accuracy of assessment results in existing methods for assessing the lifespan of insulated water inlet pipes of nuclear power generators.
[0005] A first aspect of this application provides a method for assessing the lifespan of an insulating water inlet pipe for a nuclear power generator, which may include: Determine the activation energy of the insulated water inlet pipe of the nuclear power generator; The accelerated aging test time for the nuclear power generator's insulating water inlet pipe is determined based on its activation energy and preset service life. Based on the accelerated aging test time, the nuclear power generator's insulating water inlet pipe was subjected to an accelerated aging test to obtain the aged insulating water inlet pipe. Determine the performance of the aged insulated water pipe across multiple evaluation dimensions; The life assessment results of the nuclear power generator's insulating water inlet pipe are determined based on the performance of the aged insulating water inlet pipe across multiple evaluation dimensions.
[0006] In one specific implementation of the first aspect, determining the activation energy of the nuclear power generator's insulating water inlet pipe may include: The mass loss-temperature curves of the insulating water inlet pipe of the nuclear power generator at different heating rates were determined; wherein, the mass loss-temperature curve is the relationship curve between mass loss and temperature; Based on the mass loss-temperature curve, determine the activation energy corresponding to each of the multiple conversion rates; The activation energy of the nuclear power generator's insulated water inlet pipe is obtained by averaging the activation energies corresponding to the multiple conversion rates.
[0007] In one specific implementation of the first aspect, determining the activation energies corresponding to the multiple conversion rates based on the mass loss-temperature curve may include: On the mass loss-temperature curve, target temperatures corresponding to the target conversion rates are selected respectively; wherein, the target conversion rate is any one of the plurality of conversion rates; A linear fit is performed between the logarithm of the heating rate and the reciprocal of the target temperature to obtain the slope of the fitted line; The activation energy corresponding to the target conversion rate is determined based on the slope of the fitted straight line.
[0008] In one specific implementation of the first aspect, determining the performance of the aged insulated water pipe across multiple evaluation dimensions may include: Determine the basic material properties of the aged insulated water pipe; Determine the electrical performance of the aged insulated water pipe; And / or, determine the overall performance of the water pipe assembly after the aging of the insulated water pipe.
[0009] In one specific implementation of the first aspect, determining the basic material properties of the aged insulating water pipe may include: The aged insulated water pipe is subjected to visual inspection, material testing, physical performance testing and / or mechanical performance testing to obtain the basic material properties of the aged insulated water pipe.
[0010] In one specific implementation of the first aspect, determining the electrical performance of the aged insulated water pipe may include: The insulation resistance of the aged insulated water pipe is tested to obtain its electrical performance.
[0011] In one specific implementation of the first aspect, determining the overall performance of the water pipe assembly after the aging of the insulated water pipe may include: Vibration test, vacuum sealing test, pressure holding test, pressure-temperature cycle test and / or burst test are performed on the aged insulated water pipe to obtain the overall performance of the water pipe assembly of the aged insulated water pipe.
[0012] A second aspect of this application provides a nuclear power generator insulation water pipe life assessment device, which may include: The activation energy determination module is used to determine the activation energy of the insulated water inlet pipe of the nuclear power generator; The test time determination module is used to determine the accelerated aging test time of the nuclear power generator insulating water inlet pipe based on the activation energy and preset service life of the nuclear power generator insulating water inlet pipe; An accelerated aging test module is used to conduct an accelerated aging test on the nuclear power generator's insulating water inlet pipe according to the accelerated aging test time, so as to obtain the aged insulating water inlet pipe. A multi-dimensional performance determination module is used to determine the performance of the aged insulated water pipe in multiple evaluation dimensions. The life assessment result determination module is used to determine the life assessment result of the nuclear power generator's insulating water pipe based on the performance of the aged insulating water pipe across multiple assessment dimensions.
[0013] In one specific implementation of the second aspect, the activation energy determination module may include: The curve determination unit is used to determine the mass loss-temperature curve of the nuclear power generator's insulating water inlet pipe at different heating rates; wherein, the mass loss-temperature curve is the relationship curve between mass loss and temperature; The first activation energy determination unit is used to determine the activation energy corresponding to multiple conversion rates based on the mass loss-temperature curve. The second activation energy determination unit is used to calculate the average of the activation energies corresponding to the multiple conversion rates to obtain the activation energy of the nuclear power generator's insulating water inlet pipe.
[0014] In one specific implementation of the second aspect, the first activation energy determining unit may include: The target temperature determination subunit is used to select the target temperature corresponding to the target conversion rate on the mass loss-temperature curve; wherein the target conversion rate is any one of the plurality of conversion rates; The linear fitting subunit is used to perform linear fitting on the relationship between the logarithm of the heating rate and the reciprocal of the target temperature to obtain the slope of the fitted line. The activation energy determination subunit is used to determine the activation energy corresponding to the target conversion rate based on the slope of the fitted straight line.
[0015] In one specific implementation of the second aspect, the multi-dimensional performance determination module may include: A material fundamental performance determination unit is used to determine the material fundamental performance of the aged insulated water pipe. An electrical performance determination unit is used to determine the electrical performance of the aged insulated water pipe. And / or, a water pipe assembly overall performance determination unit, used to determine the overall performance of the water pipe assembly of the aged insulated water pipe.
[0016] In one specific implementation of the second aspect, the material fundamental performance determination unit may be specifically used to: perform visual inspection, material testing, physical performance testing and / or mechanical performance testing on the aged insulated water pipe to obtain the material fundamental performance of the aged insulated water pipe.
[0017] In one specific implementation of the second aspect, the electrical performance determination unit may be specifically used to: perform an insulation resistance test on the aged insulated water pipe to obtain the electrical performance of the aged insulated water pipe.
[0018] In one specific implementation of the second aspect, the water pipe assembly overall performance determination unit may be specifically used to: conduct vibration tests, vacuum sealing tests, pressure holding tests, pressure-temperature cycle tests and / or burst tests on the aged insulated water pipe to obtain the overall performance of the water pipe assembly of the aged insulated water pipe.
[0019] A third aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of any of the above-described methods for assessing the lifespan of an insulated water pipe for a nuclear power generator.
[0020] A fourth aspect of this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of any of the above-described methods for assessing the lifespan of an insulated water pipe for a nuclear power generator.
[0021] The fifth aspect of this application provides a computer program product that, when run on an electronic device, causes the electronic device to execute the steps of any of the above-described nuclear power generator insulation water pipe life assessment methods.
[0022] The beneficial effects of this application embodiment compared with the prior art are as follows: This application embodiment determines the activation energy of the nuclear power generator insulating water inlet pipe; based on the activation energy and preset service life of the nuclear power generator insulating water inlet pipe, it determines the accelerated aging test time of the nuclear power generator insulating water inlet pipe; based on the accelerated aging test time, it conducts an accelerated aging test on the nuclear power generator insulating water inlet pipe to obtain the aged insulating water inlet pipe; it determines the performance of the aged insulating water inlet pipe in multiple evaluation dimensions; based on the performance of the aged insulating water inlet pipe in multiple evaluation dimensions, it determines the life assessment result of the nuclear power generator insulating water inlet pipe. Through this application embodiment, accelerated aging tests can be conducted on the nuclear power generator insulating water inlet pipe, and for the aged insulating water inlet pipe, its life assessment result can be determined by comprehensively considering the performance in multiple evaluation dimensions, thereby effectively improving the accuracy of the assessment result. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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.
[0024] Figure 1 This is a flowchart of one embodiment of a method for assessing the lifespan of an insulated water inlet pipe for a nuclear power generator, as described in this application. Figure 2 A schematic flowchart for determining the activation energy of the insulated water inlet pipe of a nuclear power generator; Figure 3 This is a structural diagram of one embodiment of a nuclear power generator insulation water pipe life assessment device according to the present application; Figure 4 This is a schematic block diagram of an electronic device according to an embodiment of this application. Detailed Implementation
[0025] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0026] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0027] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0028] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0029] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [the described condition or event] is detected," or "in response to detection of [the described condition or event]."
[0030] Furthermore, in the description of this application, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0031] In the field of nuclear power technology, the insulating water inlet pipe of a nuclear power generator serves as a key sealed and flow-guiding component, undertaking a dual function: firstly, it acts as a flow channel for the stator coil cooling water, ensuring efficient heat dissipation; secondly, it provides a high-voltage electrical insulation barrier, isolating the generator from voltages reaching thousands of volts inside. Nuclear power generator insulating water inlet pipes are typically made of polytetrafluoroethylene (PTFE). PTFE possesses excellent high-temperature resistance, chemical corrosion resistance, electrical insulation properties, and self-lubricating properties, ensuring the heat dissipation and insulation functions of the water inlet pipe, and improving the operational safety and reliability of the generator.
[0032] In nuclear power generators, the long-term operating temperature of the insulated water inlet pipes is around 70℃, the medium inside the pipes is pure water, and they also need to withstand thousands of volts of AC voltage and vibration, facing a harsh operating environment. Temperature is one of the core factors in the aging of polytetrafluoroethylene (PTFE). Under operating temperatures, the grain size of PTFE increases, leading to increased brittleness of the material; at the same time, with trace amounts of oxygen in the water, oxidation aging easily occurs. Failure of the insulated water inlet pipes of nuclear power generators will directly lead to cooling water leakage and high-voltage breakdown, seriously threatening the safe and stable operation of the generator. Therefore, it is necessary to accurately assess the service life of the insulated water inlet pipes of nuclear power generators to avoid their exceeding their service life. However, in the current technology, the service life assessment of the insulated water inlet pipes of nuclear power generators is mainly based on the personal experience of relevant personnel, resulting in low accuracy of the assessment results.
[0033] In view of this, embodiments of this application provide a method, apparatus, computer-readable storage medium, and electronic device for assessing the lifespan of insulated water inlet pipes of nuclear power generators, in order to solve the problem of low accuracy of assessment results in existing methods for assessing the lifespan of insulated water inlet pipes of nuclear power generators.
[0034] In this embodiment, the activation energy of the nuclear power generator's insulating water inlet pipe can be determined; based on the activation energy and a preset service life, the accelerated aging test time for the nuclear power generator's insulating water inlet pipe is determined; based on the accelerated aging test time, the nuclear power generator's insulating water inlet pipe undergoes an accelerated aging test to obtain the aged insulating water inlet pipe; the performance of the aged insulating water inlet pipe is determined across multiple evaluation dimensions; and based on the performance of the aged insulating water inlet pipe across multiple evaluation dimensions, the life assessment result of the nuclear power generator's insulating water inlet pipe is determined. Through this embodiment, accelerated aging tests can be performed on the nuclear power generator's insulating water inlet pipe, and the life assessment result can be determined by comprehensively considering the performance across multiple evaluation dimensions of the aged insulating water inlet pipe, thereby effectively improving the accuracy of the assessment results.
[0035] Please see Figure 1 One embodiment of a method for assessing the lifespan of an insulated water pipe for a nuclear power generator, as described in this application, may include: Step S101: Determine the activation energy of the insulated water inlet pipe of the nuclear power generator.
[0036] Activation energy refers to the minimum energy required for a molecule to transition from its normal state to an active state where it is prone to chemical reactions. In the embodiments of this application, activation energy is a key parameter for subsequent calculations of accelerated aging test conditions.
[0037] like Figure 2 As shown, the specific process for determining the activation energy of the insulating water inlet pipe of a nuclear power generator may include the following steps: Step S1011: Determine the mass loss-temperature curve of the nuclear power generator's insulating water inlet pipe at different heating rates.
[0038] In this embodiment, multiple small samples of the insulating water inlet pipe of a nuclear power generator can be taken, dried to remove moisture, and then the mass loss-temperature curve of the insulating water inlet pipe at different heating rates can be determined by thermogravimetric analysis. The mass loss-temperature curve is the relationship between mass loss and temperature, and each heating rate (denoted as ) represents the mass loss. This corresponds to a mass loss-temperature curve. The specific number of different heating rates can be flexibly set according to actual conditions, and this application embodiment does not impose a specific limitation on this. As an example, 3 to 5 different heating rates can be set.
[0039] Step S1012: Determine the activation energy corresponding to each of the multiple conversion rates based on the mass loss-temperature curve.
[0040] In the embodiments of this application, the specific number of multiple conversion rates can be flexibly set according to the actual situation, and the embodiments of this application do not impose a specific limitation on this. For ease of description, any one of the multiple conversion rates is taken as an example and denoted as the target conversion rate, and the process of determining its corresponding activation energy is described in detail.
[0041] To determine the target conversion rate, the target temperature (denoted as ) can be selected on the mass loss-temperature curve corresponding to the target conversion rate. The relationship between the target conversion rate and the target temperature is shown in the following formula:
[0042] in, For the initial mass, The mass at the target temperature at that moment. This refers to the final residual mass (such as ash content). The target conversion rate is defined by the formula above. On each mass loss-temperature curve, a target temperature corresponding to the target conversion rate can be selected.
[0043] After selecting the target temperatures corresponding to the target conversion rates, the logarithm of the heating rate can be used to calculate the conversion rate. ) and the reciprocal of the target temperature ( The corresponding relationship between the two is used to perform linear fitting, thereby obtaining the slope of the fitted line.
[0044] The activation energy corresponding to the target conversion rate can be determined based on the slope of the fitted straight line, as shown in the following formula:
[0045] in, The slope of the fitted line, The gas constant is... The activation energy is the energy corresponding to the target conversion rate.
[0046] Step S1013: Calculate the average of the activation energies corresponding to multiple conversion rates to obtain the activation energy of the nuclear power generator's insulated water inlet pipe.
[0047] The above method allows for the precise determination of the activation energy of the nuclear power generator's insulating water inlet pipe through thermogravimetric analysis (TGA). This enables the design of subsequent accelerated aging tests to better align with the aging kinetics of the nuclear power generator's insulating water inlet pipe, avoiding errors caused by using general empirical values. Consequently, the accuracy of the life assessment results for the nuclear power generator's insulating water inlet pipe is significantly improved.
[0048] Step S102: Determine the accelerated aging test time for the nuclear power generator's insulating water inlet pipe based on its activation energy and preset service life.
[0049] In this embodiment, the accelerated aging test time for the insulating water inlet pipe of the nuclear power generator can be determined according to the following formula:
[0050] in, The accelerated aging test temperature for the insulated water inlet pipes of nuclear power generators. The operating temperature of the insulated water supply pipe for the nuclear power generator. Boltzmann's constant, The accelerated aging test time for the insulated water inlet pipes of nuclear power generators. The preset service life of the insulated water inlet pipe for the nuclear power generator can be flexibly set according to actual conditions, and this application embodiment does not impose a specific limitation on it. As an example, it can be set to... Multiples of 10 years, such as 10 years, 20 years, etc.
[0051] Step S103: Based on the accelerated aging test time, conduct an accelerated aging test on the insulated water inlet pipe of the nuclear power generator to obtain the aged insulated water inlet pipe.
[0052] In this embodiment, key factors such as pressure and medium (pressure holding, oxygen isolation) in actual operation can be simulated. Accelerated aging tests are conducted on the insulated water pipes of nuclear power generators according to the accelerated aging test time, so that the aging process is closer to the real service environment. The evaluation results obtained in this way have stronger guiding significance for the actual application of nuclear power plants.
[0053] Step S104: Determine the performance of the aged insulated water pipe across multiple evaluation dimensions.
[0054] In the embodiments of this application, the performance in multiple evaluation dimensions may include, but is not limited to, at least one of the following: basic material properties, electrical properties, and overall performance of the water pipe assembly.
[0055] Taking the determination of the basic material properties of aged insulated water pipes as an example, at least one of the following tests can be performed on the aged insulated water pipes: Visual inspection: This includes macroscopic and microscopic inspections. Stereo microscopes and scanning electron microscopes are used to examine the appearance changes of the insulated water pipes before and after aging. Special attention is paid to the bends and joints to observe for defects such as cracks, deformations, and bulges. Material testing: Fourier transform infrared spectroscopy was used to test and analyze whether the material underwent aging or degradation before and after aging. Physical performance testing: Measure and compare the dimensions (inner diameter), hardness (Shore D), density, etc. of the samples before and after aging.
[0056] Mechanical property testing: The tensile strength and elongation at break of the insulated water pipe before and after aging were tested using a universal testing machine. The water pipe was made into a dumbbell shape along the longitudinal direction for the test.
[0057] The basic material properties of aged insulated water pipes can be obtained by conducting visual inspections, material tests, physical property tests, and / or mechanical property tests on the aged insulated water pipes.
[0058] Taking the determination of the electrical performance of an aged insulated water pipe as an example, an insulation resistance test can be performed on the aged insulated water pipe to obtain its electrical performance. Specifically, depending on the operating conditions of the insulated water pipe, the insulation resistance value of the aged insulated water pipe can be tested using a safety testing instrument under a DC voltage of 1 kV for 1 minute.
[0059] Taking the determination of the overall performance of the water pipe assembly after aging as an example, at least one of the following tests can be performed on the aged insulated water pipe: Vibration test: Simulate the vibration of the unit during operation, and conduct a vibration test along the vertical axis at a frequency of 25 Hz and an amplitude of 2.8 mm / s for 24 hours.
[0060] Vacuum sealing test: Sealing tests were conducted at room temperature and a vacuum pressure of -50 kPa for 10 minutes, 20 minutes, 30 minutes and 24 hours respectively.
[0061] Pressure holding test: Under room temperature and nitrogen pressure of 28 bar, the pressure is held for 15 minutes to test its pressure resistance and sealing performance.
[0062] Pressure-temperature cycle test: Simulate start-up and shutdown conditions, cycle between medium temperature 80℃ / pressure 6.75 bar and 25℃ / pressure 0, maintain high and low temperatures for 20 minutes each, and heat up and cool down for 30 minutes each, cycle 10 times.
[0063] Bursting test: At room temperature, pressurize the tube at a rate of 140 MPa / min ± 35 MPa / min until the sample ruptures, and record the burst pressure value and rupture state.
[0064] The overall performance of the water pipe assembly of the aged insulated water pipe can be obtained by conducting vibration tests, vacuum sealing tests, pressure holding tests, pressure-temperature cycling tests, and / or burst tests on the aged insulated water pipe.
[0065] Step S105: Determine the life assessment results of the nuclear power generator's insulating water inlet pipe based on the performance of the aged insulating water inlet pipe across multiple evaluation dimensions.
[0066] After obtaining the performance of the aged insulated water inlet pipe across multiple evaluation dimensions, its various performance indicators can be compared with preset qualification standards (or new sample test results). If the key performance indicators (including but not limited to insulation resistance, burst pressure, tensile strength, etc.) all meet the safety requirements, then the life assessment result of the nuclear power generator insulated water inlet pipe can be determined as: meeting the preset service life in the accelerated aging test (i.e., ...). Otherwise, it can be determined that the life assessment result of the nuclear power generator's insulating water inlet pipe is: it does not meet the preset service life in the accelerated aging test.
[0067] Through the above process, a comprehensive evaluation system was established, encompassing three major categories and multiple specific test indicators: basic material properties, electrical properties, and overall performance of water pipe components. This system assesses the impact of aging on the performance of insulated water pipes from a micro to macro perspective, and from materials to components, avoiding the one-sidedness of evaluation based on a single indicator, and making the conclusions more scientific and reliable.
[0068] In summary, this application embodiment determines the activation energy of the nuclear power generator's insulating water inlet pipe; based on the activation energy and preset service life of the nuclear power generator's insulating water inlet pipe, it determines the accelerated aging test time of the nuclear power generator's insulating water inlet pipe; based on the accelerated aging test time, it conducts an accelerated aging test on the nuclear power generator's insulating water inlet pipe to obtain the aged insulating water inlet pipe; it determines the performance of the aged insulating water inlet pipe in multiple evaluation dimensions; and based on the performance of the aged insulating water inlet pipe in multiple evaluation dimensions, it determines the life assessment result of the nuclear power generator's insulating water inlet pipe. Through this application embodiment, accelerated aging tests can be conducted on the nuclear power generator's insulating water inlet pipe, and for the aged insulating water inlet pipe, its life assessment result can be determined by comprehensively considering the performance in multiple evaluation dimensions, thereby effectively improving the accuracy of the assessment results.
[0069] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0070] Corresponding to the life assessment method for the insulating water inlet pipe of a nuclear power generator described in the above embodiments, Figure 3 This paper shows a structural diagram of an embodiment of a nuclear power generator insulation water pipe life assessment device provided in this application.
[0071] In this embodiment, a nuclear power generator insulation water pipe life assessment device may include: Activation energy determination module 301 is used to determine the activation energy of the insulated water inlet pipe of the nuclear power generator; The test time determination module 302 is used to determine the accelerated aging test time of the nuclear power generator insulating water inlet pipe based on the activation energy and preset service life of the nuclear power generator insulating water inlet pipe. The accelerated aging test module 303 is used to conduct an accelerated aging test on the nuclear power generator insulating water pipe according to the accelerated aging test time, so as to obtain the aged insulating water pipe. The multi-dimensional performance determination module 304 is used to determine the performance of the aged insulated water pipe in multiple evaluation dimensions. The life assessment result determination module 305 is used to determine the life assessment result of the nuclear power generator insulating water pipe based on the performance of the aged insulating water pipe in multiple assessment dimensions.
[0072] In one specific implementation of this application embodiment, the activation energy determination module may include: The curve determination unit is used to determine the mass loss-temperature curve of the nuclear power generator's insulating water inlet pipe at different heating rates; wherein, the mass loss-temperature curve is the relationship curve between mass loss and temperature; The first activation energy determination unit is used to determine the activation energy corresponding to multiple conversion rates based on the mass loss-temperature curve. The second activation energy determination unit is used to calculate the average of the activation energies corresponding to the multiple conversion rates to obtain the activation energy of the nuclear power generator's insulating water inlet pipe.
[0073] In one specific implementation of this application embodiment, the first activation energy determining unit may include: The target temperature determination subunit is used to select the target temperature corresponding to the target conversion rate on the mass loss-temperature curve; wherein the target conversion rate is any one of the plurality of conversion rates; The linear fitting subunit is used to perform linear fitting on the relationship between the logarithm of the heating rate and the reciprocal of the target temperature to obtain the slope of the fitted line. The activation energy determination subunit is used to determine the activation energy corresponding to the target conversion rate based on the slope of the fitted straight line.
[0074] In one specific implementation of this application embodiment, the multi-dimensional performance determination module may include: A material fundamental performance determination unit is used to determine the material fundamental performance of the aged insulated water pipe. An electrical performance determination unit is used to determine the electrical performance of the aged insulated water pipe. And / or, a water pipe assembly overall performance determination unit, used to determine the overall performance of the water pipe assembly of the aged insulated water pipe.
[0075] In one specific implementation of this application, the material basic performance determination unit can be specifically used to: perform visual inspection, material testing, physical performance testing and / or mechanical performance testing on the aged insulating water pipe to obtain the material basic performance of the aged insulating water pipe.
[0076] In one specific implementation of this application, the electrical performance determination unit may be specifically used to: perform an insulation resistance test on the aged insulated water pipe to obtain the electrical performance of the aged insulated water pipe.
[0077] In one specific implementation of this application, the water pipe assembly overall performance determination unit can be specifically used to: conduct vibration tests, vacuum sealing tests, pressure holding tests, pressure-temperature cycle tests and / or burst tests on the aged insulated water pipe to obtain the overall performance of the water pipe assembly of the aged insulated water pipe.
[0078] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0080] Figure 4 A schematic block diagram of an electronic device provided in an embodiment of this application is shown. For ease of explanation, only the parts related to the embodiment of this application are shown.
[0081] like Figure 4 As shown, the electronic device 4 in this embodiment includes: a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. When the processor 40 executes the computer program 42, it implements the steps in the embodiments of the nuclear power generator insulation water pipe life assessment methods described above, for example... Figure 1 Steps S101 to S105 are shown. Alternatively, when the processor 40 executes the computer program 42, it implements the functions of each module / unit in the above-described device embodiments, for example... Figure 3 The functions of modules 301 to 305 are shown.
[0082] For example, the computer program 42 may be divided into one or more modules / units, which are stored in the memory 41 and executed by the processor 40 to complete this application. The one or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 42 in the electronic device 4.
[0083] The electronic device 4 may include, but is not limited to, computing devices such as mobile phones, tablets, desktop computers, laptops, handheld computers, robots, and servers. Those skilled in the art will understand that... Figure 4 This is merely an example of electronic device 4 and does not constitute a limitation on electronic device 4. It may include more or fewer components than shown, or combine certain components, or different components. For example, electronic device 4 may also include input / output devices, network access devices, buses, etc.
[0084] The processor 40 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.
[0085] The memory 41 can be an internal storage unit of the electronic device 4, such as a hard disk or memory. The memory 41 can also be an external storage device of the electronic device 4, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, the memory 41 can include both internal and external storage units of the electronic device 4. The memory 41 is used to store the computer program and other programs and data required by the electronic device 4. The memory 41 can also be used to temporarily store data that has been output or will be output.
[0086] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.
[0087] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0088] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
[0089] In the embodiments provided in this application, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings or direct couplings or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.
[0090] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0091] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0092] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable storage medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. It should be noted that the content included in the computer-readable storage medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable storage medium does not include electrical carrier signals and telecommunication signals.
[0093] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.
Claims
1. A method for assessing the lifespan of an insulated water inlet pipe for a nuclear power generator, characterized in that, include: Determine the activation energy of the insulated water inlet pipe of the nuclear power generator; The accelerated aging test time for the nuclear power generator's insulating water inlet pipe is determined based on its activation energy and preset service life. Based on the accelerated aging test time, the nuclear power generator's insulating water inlet pipe was subjected to an accelerated aging test to obtain the aged insulating water inlet pipe. Determine the performance of the aged insulated water pipe across multiple evaluation dimensions; The life assessment results of the nuclear power generator's insulating water inlet pipe are determined based on the performance of the aged insulating water inlet pipe across multiple evaluation dimensions.
2. The method for assessing the lifespan of the insulating water inlet pipe of a nuclear power generator according to claim 1, characterized in that, The determination of the activation energy of the insulated water inlet pipe of the nuclear power generator includes: The mass loss-temperature curves of the insulating water inlet pipe of the nuclear power generator at different heating rates were determined; wherein, the mass loss-temperature curve is the relationship curve between mass loss and temperature; Based on the mass loss-temperature curve, determine the activation energy corresponding to each of the multiple conversion rates; The activation energy of the nuclear power generator's insulated water inlet pipe is obtained by averaging the activation energies corresponding to the multiple conversion rates.
3. The method for assessing the lifespan of the insulating water inlet pipe of a nuclear power generator according to claim 2, characterized in that, The step of determining the activation energies corresponding to multiple conversion rates based on the mass loss-temperature curve includes: On the mass loss-temperature curve, target temperatures corresponding to the target conversion rates are selected respectively; wherein, the target conversion rate is any one of the plurality of conversion rates; A linear fit is performed between the logarithm of the heating rate and the reciprocal of the target temperature to obtain the slope of the fitted line; The activation energy corresponding to the target conversion rate is determined based on the slope of the fitted straight line.
4. The method for assessing the lifespan of the insulating water inlet pipe of a nuclear power generator according to any one of claims 1 to 3, characterized in that, The determination of the performance of the aged insulated water pipe across multiple evaluation dimensions includes: Determine the basic material properties of the aged insulated water pipe; Determine the electrical performance of the aged insulated water pipe; And / or, determine the overall performance of the water pipe assembly after the aging of the insulated water pipe.
5. The method for assessing the lifespan of the insulating water inlet pipe of a nuclear power generator according to claim 4, characterized in that, The determination of the basic material properties of the aged insulated water pipe includes: The aged insulated water pipe is subjected to visual inspection, material testing, physical performance testing and / or mechanical performance testing to obtain the basic material properties of the aged insulated water pipe.
6. The method for assessing the lifespan of the insulating water inlet pipe of a nuclear power generator according to claim 4, characterized in that, Determining the electrical performance of the aged insulated water pipe includes: The insulation resistance of the aged insulated water pipe is tested to obtain its electrical performance.
7. The method for assessing the lifespan of the insulating water inlet pipe of a nuclear power generator according to claim 4, characterized in that, Determining the overall performance of the water pipe assembly after the aging of the insulated water pipe includes: Vibration test, vacuum sealing test, pressure holding test, pressure-temperature cycle test and / or burst test are performed on the aged insulated water pipe to obtain the overall performance of the water pipe assembly of the aged insulated water pipe.
8. A device for assessing the lifespan of an insulated water inlet pipe for a nuclear power generator, characterized in that, include: The activation energy determination module is used to determine the activation energy of the insulated water inlet pipe of the nuclear power generator; The test time determination module is used to determine the accelerated aging test time of the nuclear power generator insulating water inlet pipe based on the activation energy and preset service life of the nuclear power generator insulating water inlet pipe; An accelerated aging test module is used to conduct an accelerated aging test on the nuclear power generator's insulating water inlet pipe according to the accelerated aging test time, so as to obtain the aged insulating water inlet pipe. A multi-dimensional performance determination module is used to determine the performance of the aged insulated water pipe in multiple evaluation dimensions. The life assessment result determination module is used to determine the life assessment result of the nuclear power generator's insulating water pipe based on the performance of the aged insulating water pipe across multiple assessment dimensions.
9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the nuclear power generator insulation water pipe life assessment method as described in any one of claims 1 to 7.
10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the nuclear power generator insulation water pipe life assessment method as described in any one of claims 1 to 7.