Fuel core deformation analysis method, device and computer equipment

Abstract

The application relates to a fuel core deformation analysis method and device and computer equipment. The method comprises the following steps: determining whether the core deformation analysis of a to-be-analyzed core is needed at a current time; if the core deformation analysis is needed, performing the deformation analysis on the to-be-analyzed core according to the component parameters of at least one to-be-analyzed fuel assembly contained in the to-be-analyzed core at the current time and the element parameters of at least one to-be-analyzed fuel element contained in each to-be-analyzed fuel assembly at the current time, and determining the core deformation data of the to-be-analyzed core at the current time; determining whether the core deformation data meets the deformation analysis condition; and if the core deformation data meets the deformation analysis condition, determining the core deformation analysis result of the to-be-analyzed core according to the size relationship between the core deformation data and the deformation data threshold. In the process of performing the deformation analysis on the to-be-analyzed core, more comprehensive factors are considered, and the obtained core deformation analysis result is more accurate.

Description

Technical Field

[0001] This application relates to the interdisciplinary fields of nuclear engineering, numerical analysis methods and data analysis, and in particular to a method, apparatus and computer equipment for analyzing fuel core deformation. Background Technology

[0002] With the continuous development of fuel engineering technology, fuel cores are also constantly being improved and perfected. However, during operation, fuel cores may deform due to external factors, which may lead to the risk of damage to the fuel cores during operation.

[0003] In existing technologies, fuel core deformation data can be predicted based on external factors (such as coolant and structural creep), thereby alerting personnel when the deformation data is too large and preventing damage to the fuel core due to excessive deformation. However, the accuracy of existing technologies for predicting fuel core deformation data is low, and they cannot accurately reflect the actual deformation status of the fuel core. Summary of the Invention

[0004] Therefore, it is necessary to provide a fuel core deformation analysis method, apparatus, and computer equipment that can accurately predict fuel core deformation data to address the aforementioned technical problems.

[0005] In a first aspect, this application provides a method for analyzing the deformation of a fuel reactor core, the method comprising:

[0006] Determine whether core deformation analysis of the reactor core to be analyzed is necessary at the current moment;

[0007] If necessary, deformation analysis is performed on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time.

[0008] Determine whether the core deformation data meets the deformation analysis conditions. The deformation analysis conditions include that the number of deformation analyses performed on the core to be analyzed at the current time has reached a preset number, and that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold.

[0009] If the conditions are met, the core deformation analysis result of the core to be analyzed is determined based on the relationship between the core deformation data and the deformation data threshold.

[0010] In one embodiment, the method further includes:

[0011] If not, determine whether the number of deformation analyses performed on the core to be analyzed at the current moment is greater than the preset number;

[0012] If it is not greater than, then return to the operation of performing deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time.

[0013] If the difference between the core deformation data obtained in this deformation analysis and the core deformation data obtained in the previous deformation analysis is not less than the difference threshold, then the deformation analysis of the core to be analyzed is stopped, and the core deformation data of the core to be analyzed at the current moment is determined to be empty.

[0014] In one embodiment, based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed, and the element parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed, deformation analysis is performed on the core to be analyzed to determine the core deformation data of the core to be analyzed, including:

[0015] Based on the element parameters of at least one fuel element contained in each fuel assembly to be analyzed, deformation analysis is performed on each fuel assembly to be analyzed to determine the component deformation data of each fuel assembly to be analyzed.

[0016] Based on the component deformation data and component parameters of each fuel assembly to be analyzed, deformation analysis is performed on the core to be analyzed to determine the core deformation data.

[0017] In one embodiment, the component parameters include the stiffness parameters of each fuel element to be analyzed, the environmental parameters of the environment in which each fuel element to be analyzed is located, and the force parameters of the interaction between different fuel elements to be analyzed.

[0018] Accordingly, based on the element parameters of at least one fuel element contained in each fuel assembly to be analyzed, deformation analysis is performed on each fuel assembly to be analyzed to determine the component deformation data of each fuel assembly to be analyzed, including:

[0019] Based on the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element is located, deformation analysis is performed on each fuel element to be analyzed to determine the element deformation data of each fuel element to be analyzed.

[0020] Based on the deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed, deformation analysis is performed on each fuel assembly to be analyzed, and the assembly deformation data of each fuel assembly to be analyzed is determined.

[0021] In one embodiment, determining whether core deformation analysis is required for the core to be analyzed includes:

[0022] Determine whether the current moment falls within the pre-set core deformation analysis time period;

[0023] If it falls under this category, then core deformation analysis of the reactor core to be analyzed is required.

[0024] If it does not belong to the category, then it is determined that core deformation analysis is not required for the core to be analyzed.

[0025] In one embodiment, the core deformation analysis result of the core to be analyzed is determined based on the relationship between the core deformation data and the deformation data threshold, including:

[0026] If the core deformation data is greater than or equal to the deformation data threshold, the core deformation analysis result of the core to be analyzed is determined to be unqualified.

[0027] If the core deformation data is less than the deformation data threshold, then the core deformation analysis result of the core to be analyzed is determined to be qualified.

[0028] Secondly, this application also provides a fuel core deformation analysis device, comprising:

[0029] The first determination module is used to determine whether core deformation analysis of the reactor core to be analyzed is required at the current moment.

[0030] The second determining module is used to, if necessary, perform deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, and determine the core deformation data of the core to be analyzed at the current time.

[0031] The third determining module is used to determine whether the core deformation data meets the deformation analysis conditions. The deformation analysis conditions include the relationship between the number of deformation analyses performed on the core to be analyzed at the current time and the preset number of analyses. Furthermore, it is determined that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold.

[0032] The fourth determination module is used to determine the core deformation analysis result of the core to be analyzed based on the relationship between the core deformation data and the deformation data threshold if the conditions are met.

[0033] 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:

[0034] Determine whether core deformation analysis of the reactor core to be analyzed is necessary at the current moment;

[0035] If necessary, deformation analysis is performed on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time.

[0036] Determine whether the core deformation data meets the deformation analysis conditions. The deformation analysis conditions include the relationship between the number of deformation analyses performed on the core to be analyzed at the current time and the preset number of analyses. In addition, determine that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold.

[0037] If the conditions are met, the core deformation analysis result of the core to be analyzed is determined based on the relationship between the core deformation data and the deformation data threshold.

[0038] 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:

[0039] Determine whether core deformation analysis of the reactor core to be analyzed is necessary at the current moment;

[0040] If necessary, deformation analysis is performed on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time.

[0041] Determine whether the core deformation data meets the deformation analysis conditions. The deformation analysis conditions include the relationship between the number of deformation analyses performed on the core to be analyzed at the current time and the preset number of analyses. In addition, determine that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold.

[0042] If the conditions are met, the core deformation analysis result of the core to be analyzed is determined based on the relationship between the core deformation data and the deformation data threshold.

[0043] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0044] Determine whether core deformation analysis of the reactor core to be analyzed is necessary at the current moment;

[0045] If necessary, deformation analysis is performed on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time.

[0046] Determine whether the core deformation data meets the deformation analysis conditions. The deformation analysis conditions include the relationship between the number of deformation analyses performed on the core to be analyzed at the current time and the preset number of analyses. In addition, determine that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold.

[0047] If the conditions are met, the core deformation analysis result of the core to be analyzed is determined based on the relationship between the core deformation data and the deformation data threshold.

[0048] The aforementioned fuel core deformation analysis method, apparatus, and computer equipment determine the core deformation data of the core under analysis by using the component parameters of at least one fuel assembly to be analyzed contained in the core under analysis, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed. Because this application considers not only the external factors affecting the fuel core as in the prior art, but also the component parameters of the fuel elements and the component parameters of the fuel assemblies to be analyzed, this application considers more comprehensive factors in the deformation analysis of the core under analysis compared to the prior art, resulting in more accurate core deformation analysis results. This ensures that the core deformation analysis results can truly reflect the deformation status of the core under analysis, thereby guaranteeing that core deformation alerts can be issued to personnel based on the core deformation data, thus reducing safety hazards during the operation of the core under analysis. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying 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.

[0050] Figure 1 An application environment diagram for the fuel core deformation analysis method provided in the embodiments of this application;

[0051] Figure 2A flowchart of the fuel core deformation analysis method provided in the embodiments of this application;

[0052] Figure 3 A flowchart illustrating another fuel core deformation analysis method provided in this application embodiment;

[0053] Figure 4 A flowchart illustrating the steps for determining core deformation data provided in this application embodiment;

[0054] Figure 5 A flowchart illustrating the process of determining core deformation data provided in this application embodiment;

[0055] Figure 6 A flowchart illustrating the steps for determining whether to perform core deformation analysis, provided in an embodiment of this application;

[0056] Figure 7 A flowchart illustrating the steps for determining core deformation analysis results provided in this application embodiment;

[0057] Figure 8 A flowchart illustrating another fuel core deformation analysis method provided in this application embodiment;

[0058] Figure 9 A module example diagram of a fuel core deformation analysis method provided in this application embodiment;

[0059] Figure 10 A structural block diagram of the first fuel core deformation analysis device provided in the embodiments of this application;

[0060] Figure 11 A structural block diagram of the second fuel core deformation analysis device provided in the embodiments of this application;

[0061] Figure 12 A structural block diagram of the third fuel core deformation analysis device provided in the embodiments of this application;

[0062] Figure 13 A structural block diagram of the fourth fuel core deformation analysis device provided in the embodiments of this application;

[0063] Figure 14 A structural block diagram of the fifth fuel core deformation analysis device provided in the embodiments of this application;

[0064] Figure 15 A structural block diagram of the sixth fuel core deformation analysis device provided in the embodiments of this application;

[0065] Figure 16 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0066] 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.

[0067] Based on the above, the fuel core deformation analysis method provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, in one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows. Figure 1 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database stores data acquired through a fuel core deformation analysis method. The network interface communicates with external terminals via a network connection. When the computer program is executed by the processor, it implements a fuel core deformation analysis method.

[0068] This application discloses a fuel core deformation analysis method, apparatus, and computer equipment. By using the component parameters of at least one fuel assembly to be analyzed in the core to be analyzed, and the component parameters of at least one fuel element to be analyzed in each fuel assembly to be analyzed, the deformation data of the core to be analyzed is determined.

[0069] In one exemplary embodiment, such as Figure 2 As shown, a method for analyzing fuel core deformation is provided, which can be applied to... Figure 1 The following steps, 201 to 203, are used as an example of computer equipment.

[0070] Step 201: Determine whether core deformation analysis is needed for the core to be analyzed at the current moment.

[0071] Core deformation analysis refers to analyzing the degree of deformation of the core to be analyzed at the current moment.

[0072] As one approach, when it is necessary to determine whether core deformation analysis of the reactor core to be analyzed is required at the current moment, a core deformation analysis time period can be preset to determine whether the current moment belongs to the core deformation analysis time period. Then, based on the relationship between the current moment and the core deformation analysis time period, it can be determined whether core deformation analysis of the reactor core to be analyzed is required at the current moment.

[0073] Specifically, if the current time falls within the pre-set core deformation analysis time period, then it is determined that core deformation analysis needs to be performed on the core to be analyzed at the current time; if the current time does not fall within the pre-set core deformation analysis time period, then it is determined that core deformation analysis does not need to be performed on the core to be analyzed at the current time.

[0074] In one embodiment of this application, if the preset core deformation analysis time period is [10:00, 12:00], and the current time is 11:00, then the current time belongs to the preset core deformation analysis time period. Therefore, it is determined that core deformation analysis needs to be performed on the core to be analyzed at the current time. If the current time is 13:00, then the current time does not belong to the preset core deformation analysis time period. Therefore, it is determined that core deformation analysis does not need to be performed on the core to be analyzed.

[0075] As one approach, when it is necessary to determine whether core deformation analysis of the reactor core to be analyzed is required, a time threshold can be preset. Then, it can be determined whether the time difference between the current moment and the last analysis time is greater than the preset time threshold. Based on the judgment result, it can be determined whether core deformation analysis of the reactor core to be analyzed is required.

[0076] Specifically, if the time difference is equal to or greater than a preset time threshold, it is determined that core deformation analysis of the reactor core to be analyzed needs to be performed at the current moment; if the time difference is less than the preset time threshold, it is determined that core deformation analysis of the reactor core to be analyzed does not need to be performed at the current moment.

[0077] In one embodiment of this application, if it is necessary to determine whether core deformation analysis of the reactor core to be analyzed is required at the current moment, a time threshold of 1 hour can be set. If the time difference between the current moment and the previous analysis time is 1 hour, the time difference is equal to the preset time threshold, and therefore, it is determined that core deformation analysis of the reactor core to be analyzed is required at the current moment. If the time difference between the current moment and the previous analysis time is 1.5 hours, the time difference is greater than the preset time threshold, and therefore, it is determined that core deformation analysis of the reactor core to be analyzed is required at the current moment. If the time difference between the current moment and the previous analysis time is 0.5 hours, the time difference is less than the preset time threshold, and therefore, it is determined that core deformation analysis of the reactor core to be analyzed is not required at the current moment.

[0078] As one implementation method, when it is necessary to determine whether core deformation analysis of the reactor core to be analyzed is required, core deformation analysis of the reactor core to be analyzed can also be performed according to time steps. The time interval between two adjacent time steps is the same. Then, it is determined whether the time difference between the current moment and the last analysis moment reaches the time interval between two adjacent time steps, and based on the judgment result, it is determined whether core deformation analysis of the reactor core to be analyzed is required.

[0079] Specifically, if the time difference between the current moment and the last analysis moment reaches the time interval between two adjacent time steps, then it is determined that core deformation analysis of the reactor core to be analyzed needs to be performed at the current moment. If the time difference between the current moment and the last analysis moment does not reach the time interval between two adjacent time steps, then it is determined that core deformation analysis of the reactor core to be analyzed does not need to be performed at the current moment.

[0080] In one embodiment of this application, if there are two time steps, namely the first time step T1 and the second time step T2, and the time interval between two adjacent time steps is dt, then the second time step T2 is determined to be T1 + dt. When it is necessary to determine whether the core deformation analysis of the core to be analyzed needs to be performed at the current time, the analysis time of the last core deformation analysis of the core to be analyzed is recorded, and the time difference between the current time and the last analysis time of the core deformation analysis of the core to be analyzed is determined. If the time difference is equal to dt, it is determined that the core deformation analysis of the core to be analyzed needs to be performed at the current time.

[0081] As one approach, when it is necessary to determine whether core deformation analysis is required for the reactor core to be analyzed, a pre-set analysis plan can be used. The analysis plan records the times when core deformation analysis is required for the reactor core to be analyzed. The current time is checked to see if it exists in the analysis plan, and based on the result, it is determined whether core deformation analysis is required for the reactor core to be analyzed.

[0082] Specifically, if the judgment result is that the core exists in the analysis plan table at the current time, then it is determined that core deformation analysis needs to be performed on the core to be analyzed; if the judgment result is that the core does not exist in the analysis plan table at the current time, then it is determined that core deformation analysis does not need to be performed on the core to be analyzed.

[0083] In one embodiment of this application, if the records in the analysis plan table include: {June 2, 2023, 06:00, June 5, 2023, 15:00, June 7, 2023, 20:00}, and the current time is June 5, 2023, 15:00, then the current time exists in the analysis plan table. Therefore, it is determined that core deformation analysis needs to be performed on the core to be analyzed. If the current time is June 3, 2023, 15:00, then the current time does not exist in the analysis plan table. Therefore, it is determined that core deformation analysis does not need to be performed on the core to be analyzed.

[0084] In summary, there are many methods to determine whether core deformation analysis is necessary for the reactor core to be analyzed, and this application does not limit the methods used to determine whether core deformation analysis is necessary for the reactor core to be analyzed.

[0085] Step 202: If necessary, perform deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, and determine the core deformation data of the core to be analyzed at the current time.

[0086] Among them, the fuel assembly to be analyzed refers to all the components required to form the core to be analyzed. The component parameters are used to represent the lateral mechanical force between the fuel assemblies to be analyzed after the lateral displacement of each fuel assembly to be analyzed causes component contact between the fuel assemblies to be analyzed.

[0087] The fuel element to be analyzed refers to all the components required to constitute the fuel assembly to be analyzed. Further, the fuel element to be analyzed can be the smallest component contained in the reactor core to be analyzed. Component parameters include the stiffness parameters of each fuel element to be analyzed, the environmental parameters of the environment in which each fuel element is located, and the force parameters of the interaction between different fuel elements to be analyzed. For example, the fuel element to be analyzed can be a fuel rod, guide tube, grid, upper and lower tube holders, etc.

[0088] The core deformation data includes core displacement data and contact force data. Furthermore, the core displacement data represents the magnitude of the displacement of the core at the current moment from its initial shape. The contact force data represents the magnitude of the force that causes the core to deform. Furthermore, the contact force data can be determined based on the forces that cause deformation of each analyzed assembly and the forces that cause deformation of each analyzed fuel element.

[0089] The initial state of the core to be analyzed refers to the core state when the core to be analyzed has not deformed, and / or the core state of the core to be analyzed at a specified time.

[0090] It should be noted that the existing technology has low accuracy in the deformation analysis of the reactor core to be analyzed. Therefore, in order to ensure accurate acquisition of the core deformation analysis results of the reactor core to be analyzed, the element deformation data of each fuel element to be analyzed can be obtained first, and the component deformation data of each fuel assembly to be analyzed can be determined based on the element deformation data of each fuel element to be analyzed. Then, the core deformation data of the reactor core to be analyzed can be determined based on the component deformation data of each fuel assembly to be analyzed. This process is repeated iteratively until the converged deformation data is calculated.

[0091] The value of the component deformation data is used to represent the deformation data of the fuel element at the current moment, which deviates from the initial shape of the fuel element. The initial shape of the fuel element refers to the state of the fuel element when it has not deformed, and / or the state of the fuel element at a specified moment.

[0092] The value of the component deformation data is used to represent the deformation data of the fuel component being analyzed at the current moment, which deviates from the initial shape of the fuel component being analyzed. The initial shape of the fuel component being analyzed refers to the component state when the fuel component being analyzed has not deformed, and / or the component state of the fuel component being analyzed at a specified moment.

[0093] In one embodiment of this application, when it is necessary to determine the component deformation data of each fuel element to be analyzed, deformation analysis can be performed on each fuel element to be analyzed based on the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element to be analyzed is located, so as to determine the component deformation data of each fuel element to be analyzed.

[0094] Specifically, based on the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element is located, the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element is located are input into the element calculation model to obtain the output results of the element calculation model, which are the element deformation data of each fuel element to be analyzed.

[0095] In another embodiment of this application, when it is necessary to determine the deformation data of each fuel element to be analyzed, the deformation of each fuel element to be analyzed can be determined according to the deformation comparison table of each fuel element to be analyzed. The deformation comparison table records the different deformation data of each fuel element to be analyzed corresponding to different deformation conditions; the deformation conditions of the fuel element to be analyzed may include the degree of bending, the degree of stretching, the degree of compression, etc.

[0096] Specifically, based on the deformation comparison table of each fuel element to be analyzed, the deformation of each fuel element to be analyzed is analyzed. The deformation data of each fuel element to be analyzed is obtained by searching in the deformation comparison table of each fuel element to be analyzed.

[0097] In one embodiment of this application, when it is necessary to determine the component deformation data of each fuel assembly to be analyzed, deformation analysis can be performed on each fuel assembly to be analyzed based on the component deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed, so as to determine the component deformation data of each fuel assembly to be analyzed.

[0098] Specifically, based on the element deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed, the element deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed are input into the component calculation model to obtain the output result of the component calculation model, which is the component deformation data of each fuel assembly to be analyzed.

[0099] In one embodiment of this application, when it is necessary to determine the core deformation data of the core to be analyzed, the core to be analyzed can be deformed based on the component deformation data of each fuel assembly to be analyzed and the component parameters of the fuel assembly to be analyzed, so as to determine the core deformation data of the core to be analyzed.

[0100] Specifically, based on the component deformation data and component parameters of each fuel assembly to be analyzed, the component deformation data and component parameters of each fuel assembly to be analyzed are input into the core calculation model to obtain the output result of the core calculation model, which is the core deformation data of the core to be analyzed.

[0101] In one embodiment of this application, if not required, core deformation analysis of the reactor core to be analyzed is not necessary.

[0102] Step 203: Determine whether the core deformation data meets the deformation analysis conditions.

[0103] In one embodiment of this application, when it is necessary to determine whether the core deformation data of the core to be analyzed at the current moment meets the deformation analysis conditions, the following steps may be included: if the core deformation data of the core to be analyzed at the current moment is determined, then the core deformation data of the core to be analyzed at at least one historical moment and the core deformation data at the current moment are averaged to obtain the average deformation data of the core to be analyzed at the current moment; furthermore, the data difference between the core deformation data of the core to be analyzed at a candidate moment and the average deformation data is determined, and it is determined whether the data difference is less than the difference threshold. If it is less than the threshold, then the core deformation data of the core to be analyzed at the current moment meets the deformation analysis conditions; if it is not less than the threshold, then the core deformation data of the core to be analyzed at the current moment does not meet the deformation analysis conditions.

[0104] Among them, the candidate time is the time specified by the staff according to the actual situation and actual needs. For example, the candidate time can be the historical time with the shortest time difference from the current time among at least one historical time.

[0105] For example, if a difference threshold N1 is preset, and the candidate time is the historical time with the shortest time difference from the current time among at least one historical time, and the core to be analyzed has undergone 10 deformation analyses at the current time, the core deformation data of the core to be analyzed at the current time is m10, and the core deformation data of the core to be analyzed at the nine historical times are arranged in chronological order as: m1, m2, ..., m9, then the core deformation data of the core to be analyzed at at least one historical time and the core deformation data at the current time are averaged, which is equivalent to averaging m1, m2, ..., m10, to obtain the average deformation data M of the core to be analyzed at the current time. The difference between the core deformation data m9 of the core to be analyzed at the candidate time and the average deformation data M is determined. It is then determined whether this difference is less than the difference threshold N1. If it is less, then the core deformation data m10 of the core to be analyzed at the current time meets the deformation analysis conditions; if it is not less, then the core deformation data m10 of the core to be analyzed at the current time does not meet the deformation analysis conditions.

[0106] In another embodiment of this application, when it is necessary to determine whether the core deformation data meets the deformation analysis conditions, the following may also be included: Based on the historical experience of the staff, a pre-set upper limit difference threshold and a lower limit difference threshold are determined, wherein the value of the upper limit difference threshold is greater than the value of the lower limit difference threshold. The data difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is determined. The relationship between the data difference and the upper limit difference threshold and the lower limit difference threshold is judged. If the data difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the lower limit difference threshold, then the core deformation data is determined to meet the deformation analysis conditions. If the data difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is greater than the upper limit difference threshold, then the core deformation data is determined to not meet the deformation analysis conditions.

[0107] For example, if the lower limit difference threshold is N2 and the upper limit difference threshold is N3, and N3 is greater than N2, then the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is determined to be n. If n is less than N2, that is, the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the lower limit difference threshold, then the core deformation data is determined to meet the deformation analysis conditions. If n is greater than N3, that is, the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is greater than the upper limit difference threshold, then the core deformation data is determined to not meet the deformation analysis conditions.

[0108] In another embodiment of this application, when it is necessary to determine whether the core deformation data meets the deformation analysis conditions, the following may be included: determining whether the number of deformation analyses performed on the core to be analyzed has reached a preset number and whether the data difference between the core deformation data obtained from the current deformation analysis of the core to be analyzed and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than a difference threshold. Based on the determination results, it is then determined whether the core deformation data meets the deformation analysis conditions.

[0109] As one implementation method, if the judgment result is: the core to be analyzed has not reached the preset number of times, and the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold, then the core deformation data is determined to meet the deformation analysis conditions.

[0110] As one implementation method, if the judgment result is: the core to be analyzed has reached the preset number of times, and the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold, then the core deformation data is determined to meet the deformation analysis conditions.

[0111] As one implementation method, if the judgment result is: the core to be analyzed has not reached the preset number of times, and the difference between the core deformation data obtained by the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained by the previous deformation analysis of the core to be analyzed is not less than the difference threshold, then the deformation analysis condition is not met, and the process returns to step 202.

[0112] As one implementation method: if the judgment result is that the core to be analyzed has reached the preset number of times, and the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is not less than the difference threshold, then the deformation analysis condition is not met, the deformation analysis of the core to be analyzed is stopped, and the core deformation data of the core to be analyzed at the current time is determined to be empty.

[0113] The difference threshold and preset number of times can be set and modified based on the staff's historical experience and the actual situation of the reactor core to be analyzed. The range of values ​​for the difference threshold and preset number of times is not limited here.

[0114] Furthermore, the difference threshold is used to represent the critical value between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed. If the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is greater than or equal to the difference threshold, it means that the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment does not converge. Therefore, the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment has no reference value.

[0115] Step 204: If the conditions are met, determine the core deformation analysis result of the core to be analyzed based on the relationship between the core deformation data and the deformation data threshold.

[0116] Among them, the deformation data threshold refers to the maximum value of the core deformation data that can still operate normally after the core to be analyzed has undergone deformation. Furthermore, since the core deformation data includes core displacement data and contact force data experienced by the core, the deformation data threshold includes the core displacement data threshold and the contact force data threshold.

[0117] It should be noted that when it is necessary to determine the core deformation analysis results of the core to be analyzed, the following can be included: determining the relationship between the core deformation data and the deformation data threshold, and determining the core deformation analysis results of the core to be analyzed based on the determination results.

[0118] To further explain, when determining the relationship between core deformation data and deformation data threshold, it is necessary to determine the relationship between core displacement data and core displacement data threshold, and the relationship between contact force data and contact force data threshold, respectively. Therefore, the core deformation analysis results of the core to be analyzed can be determined based on the pre-set deformation analysis rules, the relationship between core displacement data and core displacement data threshold, and the relationship between contact force data and contact force data threshold.

[0119] In one embodiment of this application, the deformation analysis rule can be as follows: when the core displacement data is greater than the core displacement data threshold, and the contact force data is also greater than the contact force data threshold, the core deformation analysis result of the core to be analyzed is severe deformation; when the core displacement data is greater than the core displacement data threshold and the contact force data is less than the contact force data threshold, or when the core displacement data is less than the core displacement data threshold and the contact force data is greater than the contact force data threshold, the core deformation analysis result of the core to be analyzed is general deformation; when the core displacement data is less than or equal to the core displacement data threshold, and the contact force data is also less than or equal to the contact force data threshold, the core deformation analysis result of the core to be analyzed is no significant deformation.

[0120] Therefore, when it is necessary to determine the core deformation analysis results of the reactor core to be analyzed, the following are specifically included: determining the core displacement data 'a' and the contact force data 'b' of the core deformation data of the reactor core to be analyzed. Given that the core displacement data threshold is threshold A and the contact force data threshold is threshold B, the following conditions are met: when the core displacement data 'a' is less than threshold A and the contact force data 'b' is less than threshold B, the core deformation analysis result of the reactor core to be analyzed is no significant deformation; when the core displacement data 'a' is greater than threshold A and the contact force data 'b' is less than threshold B, or when the core displacement data 'a' is less than threshold A and the contact force data 'b' is greater than threshold B, the core deformation analysis result of the reactor core to be analyzed is general deformation; when the core displacement data 'a' is greater than threshold A and the contact force data 'b' is greater than threshold B, the core deformation analysis result of the reactor core to be analyzed is severe deformation.

[0121] In the aforementioned fuel core deformation analysis method, the core deformation data of the core to be analyzed is determined by the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed. Because this application considers not only the external factors affecting the fuel core as in the prior art, but also the component parameters of the fuel elements and the component parameters of the fuel assemblies to be analyzed, this application considers more comprehensive factors in the deformation analysis of the core to be analyzed compared to the prior art. Therefore, the core deformation analysis results obtained are more accurate, enabling the core deformation analysis results to truly reflect the deformation status of the core to be analyzed. This ensures that core deformation alerts can be issued to personnel based on the core deformation data of the core to be analyzed, thereby reducing safety hazards during the operation of the core to be analyzed.

[0122] As one embodiment, because the accuracy of predicting fuel core deformation data based on external factors in the prior art is low, it cannot truly reflect the deformation of the fuel core. To solve the above technical problem, the computer equipment of this application can, as shown in the example... Figure 3 As shown, if the core deformation data does not meet the deformation analysis conditions, the process may specifically include steps 301 to 303, wherein:

[0123] Step 301: If the condition is not met, determine whether the number of deformation analyses performed on the core to be analyzed at the current moment is greater than the preset number.

[0124] It should be noted that due to the inherent randomness in the deformation analysis of the reactor core, the deformation analysis results obtained from each analysis cannot accurately reflect the actual deformation of the core. Therefore, to ensure accurate acquisition of the actual deformation of the core, a predetermined number of deformation analyses can be performed on the core. This reduces the randomness in the deformation analysis process and ensures that each deformation analysis result accurately reflects the actual deformation of the core.

[0125] In one embodiment of this application, the number of deformation analyses performed on the core to be analyzed can be recorded, and then, based on the number of deformation analyses performed on the core to be analyzed, it can be determined whether the number of deformation analyses performed on the core to be analyzed at the current moment is greater than a preset number.

[0126] As an example, a first-time number statistics table can be pre-set. Whenever a deformation analysis is performed on the core to be analyzed, the time of the deformation analysis is added to the first-time number statistics table. Furthermore, it is stipulated that when the data in the first-time number statistics table increases, it is determined whether the number of deformation analyses performed on the core to be analyzed at the current time is greater than the preset number.

[0127] As another example, a second number statistics table can be preset. Whenever the core to be analyzed is subjected to deformation analysis, the time of deformation analysis of the core to be analyzed is added to the second number statistics table. Furthermore, it is stipulated that when the data contained in the second number statistics table is greater than the data threshold, an alarm is triggered, which indicates that the number of deformation analyses performed on the core to be analyzed at the current time is greater than the preset number.

[0128] Step 302: If it is not greater than, then return to the operation of performing deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time.

[0129] It should be noted that if the number of deformation analyses performed on the core to be analyzed at the current moment is not greater than the preset number, it means that the number of deformation analyses performed on the core to be analyzed at the current moment is too small, and the core deformation analysis results obtained from each deformation analysis of the core to be analyzed cannot reflect the actual deformation of the core to be analyzed. Therefore, the operation of performing deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current moment, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current moment, is performed to determine the core deformation data of the core to be analyzed at the current moment, so as to perform deformation analysis on the core to be analyzed again.

[0130] Step 303: If the value is greater than 0, and the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is not less than the difference threshold, then stop the deformation analysis of the core to be analyzed and determine that the core deformation data of the core to be analyzed at the current time is empty.

[0131] It should be noted that during the deformation analysis of the reactor core to be analyzed, if there are measurement errors in the component parameters of at least one fuel assembly to be analyzed in the reactor core at the current moment, and / or in the component parameters of at least one fuel element to be analyzed in each fuel assembly to be analyzed at the current moment, the difference between the core deformation data obtained from the deformation analysis of the reactor core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the reactor core to be analyzed will increase (i.e., be greater than or equal to the difference threshold). At this time, since there are measurement errors in the component parameters and component parameters, the core deformation data obtained from the component parameters and component parameters is not meaningful. Therefore, it is not necessary to continue the deformation analysis of the reactor core to be analyzed, and the core deformation data of the reactor core to be analyzed at the current moment is determined to be empty.

[0132] As an example, if the preset number of times is 20, the deformation analysis of the core to be analyzed at the current time T is performed 20 times. The difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is c, and the difference threshold is C. Furthermore, c is not less than C. Since the preset number of times has been reached, and the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is not less than the difference threshold, the deformation analysis of the core to be analyzed is stopped, and the core deformation data of the core to be analyzed at the current time is determined to be empty.

[0133] In the aforementioned fuel core deformation analysis method, by determining whether the number of deformation analyses performed on the core under analysis at the current moment is greater than a preset number, the randomness in the deformation analysis process is reduced, ensuring that the core deformation analysis results obtained from each deformation analysis can accurately and effectively reflect the actual deformation of the core under analysis. Furthermore, by determining the relationship between the difference between the core deformation data obtained from the current deformation analysis and the core deformation data obtained from the previous deformation analysis and the difference threshold, the method avoids the phenomenon that the obtained core deformation data is meaningless due to errors in component parameters and element parameters.

[0134] To reduce the risk of fuel core damage, it is necessary to predict fuel core deformation and obtain accurate deformation data. However, existing technologies for predicting fuel core deformation have low accuracy and cannot truly reflect the deformation status of the fuel core. To solve the above technical problems, the computer equipment of this application can, as shown in the following... Figure 4 The method shown determines the core deformation data of the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed, including steps 401 and 402. Wherein:

[0135] Step 401: Based on the element parameters of at least one fuel element contained in each fuel assembly to be analyzed, perform deformation analysis on each fuel assembly to be analyzed to determine the component deformation data of each fuel assembly to be analyzed.

[0136] The component parameters include the stiffness parameters of each fuel element to be analyzed, the environmental parameters of the environment in which each fuel element is located, and the force parameters of the interaction between different fuel elements to be analyzed.

[0137] To further clarify, the stiffness parameters of each fuel element to be analyzed can be the bending stiffness of each fuel element, the axial stiffness of each fuel element, and the connection stiffness between any two fuel elements. Furthermore, the stiffness parameters of the fuel elements will affect their deformation. For example, when a fuel element is subjected to an external load, the larger the stiffness parameter, the less deformation (e.g., creep deformation) it will undergo. Factors affecting the stiffness parameters of the fuel elements include: 1) the bending and axial stiffness of the guide tubes and fuel rods; and 2) the connections and couplings between all guide tubes, fuel rods, and the grid. Therefore, the stiffness of the fuel element structure is a crucial factor in determining its deformation.

[0138] To further explain, the environmental parameters of the environment in which each fuel element is located refer to the temperature load and neutron irradiation experienced by the fuel element. Regarding the temperature load: different temperature loads will cause different degrees of thermal creep in the fuel element, and will also cause different degrees of thermal expansion. Regarding the neutron irradiation: neutron irradiation will damage the metal alloy lattice of the fuel element, thereby inducing irradiation creep and irradiation growth phenomena, resulting in deformation of the fuel element.

[0139] To further explain, the force parameters of the interaction between different fuel elements to be analyzed include the forces between the fuel elements to be analyzed (e.g., the forces between the grid and the guide tube, the forces between the grid and the fuel rod), the spring clamping force on the fuel element to be analyzed, and the fluid forces on the fuel element to be analyzed.

[0140] Specifically, external loads, such as the pressure exerted on the top of the fuel element being analyzed by the upper core plate, cause springs to apply a spring clamping force to the fuel element, resulting in deformation. Uneven liquid flow distribution and redistribution within the core cause crossflow, which exerts a fluid force on the fuel element, causing deformation. This deformation leads to contact and compression between the fuel elements, generating inter-element forces that further deform the fuel element.

[0141] It should be noted that since each fuel assembly to be analyzed contains at least one fuel element to be analyzed, the deformation of each fuel element and the interaction between them will both cause deformation of the fuel assembly. However, the deformation of the fuel element is affected by the stiffness parameters of the fuel element and the environmental parameters of the environment in which it is located. Therefore, when it is necessary to determine the assembly deformation data of each fuel assembly, it is necessary to perform deformation analysis on each fuel assembly based on the stiffness parameters of each fuel element, the environmental parameters of the environment in which the fuel element is located, and the force parameters of the interaction between different fuel elements. Specifically: based on the stiffness parameters of each fuel element and the environmental parameters of the environment in which the fuel element is located, deformation analysis is performed on each fuel element to determine the element deformation data. Then, based on the element deformation data of each fuel element and the force parameters of the interaction between different fuel elements, deformation analysis is performed on each fuel assembly to determine the assembly deformation data.

[0142] In one embodiment of this application, a fuel assembly to be analyzed is known to include at least one fuel element to be analyzed. When it is necessary to determine the assembly deformation data of the fuel assembly to be analyzed, the following methods may be included: A component calculation model and an assembly calculation model may be pre-trained. The component calculation model is used to determine the component deformation data of each fuel element to be analyzed; and the assembly calculation model is used to determine the assembly deformation data of each fuel assembly to be analyzed. Specifically, the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element to be analyzed is located are input into the component calculation model, and the output result of the component calculation model is obtained. This output result is the component deformation data of each fuel element to be analyzed. The component deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed are input into the assembly calculation model, and the output result of the assembly calculation model is obtained. This output result is the assembly deformation data of the fuel assembly to be analyzed.

[0143] The training process of the component calculation model and the assembly calculation model includes: inputting the stiffness parameters of the sample components and the environmental parameters of the environment in which the sample components are located into the component calculation model to train the component calculation model and obtain the trained component calculation model; and inputting the deformation data of the sample components and the force parameters of the interaction between different sample components into the assembly calculation model to train the assembly calculation model and obtain the trained assembly calculation model.

[0144] Furthermore, the component parameters may also include other influencing parameters, such as the geometric change parameters of the circular cross-section of the fuel element being analyzed transforming into an ellipse due to creep, and the degradation parameters of the connecting forces between the fuel elements being analyzed. In summary, the component parameters in this application include many types of parameters, and no limitation is made here regarding the types of parameters included in the component parameters.

[0145] Step 402: Based on the component deformation data and component parameters of each fuel assembly to be analyzed, perform deformation analysis on the core to be analyzed to determine the core deformation data of the core to be analyzed.

[0146] It should be noted that the component parameters represent the lateral mechanical forces generated between the fuel assemblies under analysis after they come into contact due to lateral translation. Furthermore, when the relative lateral deformation between adjacent fuel assemblies exceeds the initial gap, gap closure will cause contact between the different fuel assemblies. The subsequent lateral translation of the contacted fuel assemblies will generate lateral mechanical forces. Therefore, the bending deformation of a single fuel assembly may lead to deformation in the analyzed reactor core.

[0147] To further explain, when it is necessary to determine the core deformation data of the reactor core to be analyzed, a pre-trained core computational model can be used to determine the core deformation data based on the component deformation data and component parameters of each fuel assembly to be analyzed (i.e., the lateral mechanical force generated by the lateral translation after the contact between the fuel assemblies). Specifically, the component deformation data and component parameters of each fuel assembly to be analyzed (i.e., the lateral mechanical force generated by the lateral translation after the contact between the fuel assemblies) are input into the core computational model, and the output result of the core computational model is obtained. This output result is the core deformation data of the reactor core to be analyzed.

[0148] In one embodiment of this application, such as Figure 5 As shown, based on the component parameters, the component parameters are input into the component calculation model to obtain the component deformation data of each fuel element to be analyzed. The component deformation data and the force parameters of the interaction between different fuel elements to be analyzed are input into the assembly calculation model to obtain the assembly deformation data of each fuel assembly to be analyzed. Then, based on the assembly deformation data of each fuel assembly to be analyzed and the assembly parameters of each fuel assembly to be analyzed, the core deformation data of the core to be analyzed is input into the core calculation model to obtain the core deformation data of the core to be analyzed.

[0149] In the aforementioned fuel core deformation analysis method, the core deformation data of the core to be analyzed is determined by the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed. Because this application considers not only the external factors affecting the fuel core as in the prior art, but also the component parameters of the fuel elements and the component parameters of the fuel assemblies to be analyzed, this application considers more comprehensive factors in the deformation analysis of the core to be analyzed compared to the prior art. Therefore, the core deformation analysis results obtained are more accurate, enabling the core deformation analysis results to truly reflect the deformation status of the core to be analyzed. This ensures that core deformation alerts can be issued to personnel based on the core deformation data of the core to be analyzed, thereby reducing safety hazards during the operation of the core to be analyzed.

[0150] In one exemplary embodiment, such as Figure 6 As shown, determining whether core deformation analysis is needed for the reactor core to be analyzed includes steps 601 to 603. Wherein:

[0151] Step 601: Determine whether the current time belongs to the pre-set core deformation analysis time period. If it does, proceed to step 602; otherwise, proceed to step 603.

[0152] It should be noted that when it is necessary to determine whether the current time belongs to the preset core deformation analysis time period, the relationship between the current time and the start and end times of the preset core deformation analysis time period is judged. Specifically, if the current time is greater than the start time and less than the end time, it is determined that the current time belongs to the preset core deformation analysis time period. If the current time is less than the start time, or greater than the end time, it is determined that the current time does not belong to the preset core deformation analysis time period.

[0153] As an example, if the current time is 07:00, the start time of the preset core deformation analysis period is 06:00 and the end time is 10:00, since the current time is greater than the start time and less than the end time, it is determined that the current time belongs to the preset core deformation analysis period.

[0154] As an example, if the current time is 05:00, and the preset core deformation analysis time period starts at 07:00 and ends at 09:00, since the current time is earlier than the start time, it is determined that the current time does not belong to the preset core deformation analysis time period.

[0155] As an example, if the current time is 17:00, and the preset core deformation analysis time period starts at 09:00 and ends at 11:00, since the current time is later than the end time, it is determined that the current time does not belong to the preset core deformation analysis time period.

[0156] Step 602: Determine that core deformation analysis is required for the core to be analyzed.

[0157] It should be noted that if core deformation analysis is required for the reactor core to be analyzed, deformation analysis of at least one component of the fuel assembly to be analyzed in the reactor core to be analyzed, and deformation analysis of at least one fuel element to be analyzed in each fuel assembly to be analyzed, thereby achieving core deformation analysis of the reactor core to be analyzed.

[0158] Step 603: Determine that core deformation analysis is not required for the core to be analyzed.

[0159] It should be noted that if the current time does not fall within the pre-set core deformation analysis time period, then core deformation analysis is not required for the core to be analyzed.

[0160] In the above-mentioned fuel core deformation analysis method, by determining whether the current time belongs to the pre-set core deformation analysis time period, it is possible to quickly determine whether core deformation analysis of the core to be analyzed is necessary, thus providing a basis for subsequently determining the core deformation data of the core to be analyzed.

[0161] In one exemplary embodiment, such as Figure 7 As shown, based on the relationship between the core deformation data and the deformation data threshold, the core deformation analysis result of the core to be analyzed is determined, including steps 701 and 702. Wherein:

[0162] Step 701: If the core deformation data is greater than or equal to the deformation data threshold, then the core deformation analysis result of the core to be analyzed is determined to be unqualified.

[0163] It should be noted that core deformation data includes core displacement data and contact force data experienced by the core, and the deformation data threshold includes both core displacement data threshold and contact force data threshold. Therefore, the cases where core deformation data is greater than or equal to the deformation data threshold include the following: core displacement data is greater than the core displacement data threshold and contact force data is greater than the contact force data threshold; core displacement data is greater than the core displacement data threshold and contact force data is equal to the contact force data threshold; core displacement data is equal to the core displacement data threshold and contact force data is greater than the contact force data threshold; and core displacement data is equal to the core displacement data threshold and contact force data is equal to the contact force data threshold.

[0164] In one embodiment of this application, the core displacement data e and the contact force data f of the core deformation data of the core to be analyzed are determined. The core displacement data threshold is known to be threshold E, and the contact force data threshold is known to be threshold F. If the core displacement data e is greater than threshold E and the contact force data f is greater than threshold F, then the core deformation analysis result of the core to be analyzed is determined to be unqualified; if the core displacement data e is greater than threshold E and the contact force data f is equal to threshold F, then the core deformation analysis result of the core to be analyzed is determined to be unqualified; if the core displacement data e is equal to threshold E and the contact force data f is greater than threshold F, then the core deformation analysis result of the core to be analyzed is determined to be unqualified; if the core displacement data e is equal to threshold E and the contact force data f is equal to threshold F, then the core deformation analysis result of the core to be analyzed is determined to be unqualified.

[0165] Step 702: If the core deformation data is less than the deformation data threshold, then the core deformation analysis result of the core to be analyzed is determined to be qualified.

[0166] It should be noted that the core deformation data being less than the deformation data threshold includes the following situations: core displacement data being less than the core displacement data threshold and contact force data being less than the contact force data threshold; core displacement data being less than the core displacement data threshold and contact force data not less than the contact force data threshold; and core displacement data not less than the core displacement data threshold and contact force data being less than the contact force data threshold.

[0167] In one embodiment of this application, the core displacement data g and the contact force data h of the core deformation data of the core to be analyzed are determined. The core displacement data threshold is known to be threshold G, and the contact force data threshold is known to be threshold H. If the core displacement data g is less than threshold G and the contact force data h is less than threshold H, then the core deformation analysis result of the core to be analyzed is determined to be qualified. If the core displacement data g is less than threshold G and the contact force data h is not less than threshold H, then the core deformation analysis result of the core to be analyzed is determined to be qualified. If the core displacement data g is not less than threshold G and the contact force data h is less than threshold H, then the core deformation analysis result of the core to be analyzed is determined to be qualified.

[0168] In the above-mentioned fuel core deformation analysis method, the core deformation analysis results of the core to be analyzed are obtained by comparing the core deformation data with the core deformation data threshold. Based on the core deformation analysis results, core deformation prompts are issued to the staff, thereby reducing the safety hazards of the core to be analyzed during operation.

[0169] In one embodiment, when it is necessary to determine the core deformation analysis results of the core to be analyzed, the specific process may include the following steps, such as... Figure 8 As shown:

[0170] Step 801: Determine whether the current moment belongs to the pre-set core deformation analysis time period.

[0171] Step 802: If it belongs to the category, then it is determined that core deformation analysis needs to be performed on the core to be analyzed, and step 803 is executed.

[0172] Step 803: Based on the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element is located, perform deformation analysis on each fuel element to be analyzed to determine the element deformation data of each fuel element to be analyzed.

[0173] Step 804: Based on the element deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed, perform deformation analysis on each fuel assembly to be analyzed, and determine the component deformation data of each fuel assembly to be analyzed.

[0174] Step 805: Based on the component deformation data and component parameters of each fuel assembly to be analyzed, perform deformation analysis on the core to be analyzed to determine the core deformation data of the core to be analyzed.

[0175] Step 806: Determine whether the core deformation data meets the deformation analysis conditions. If it does, proceed to step 807; otherwise, proceed to step 809.

[0176] Step 807: Determine the core deformation analysis result of the core to be analyzed based on the relationship between the core deformation data and the deformation data threshold.

[0177] Step 808: If the core deformation data is greater than or equal to the deformation data threshold, the core deformation analysis result of the core to be analyzed is determined to be unqualified; if the core deformation data is less than the deformation data threshold, the core deformation analysis result of the core to be analyzed is determined to be qualified.

[0178] Step 809: Determine whether the number of deformation analyses performed on the core to be analyzed at the current time is greater than the preset number. If it is not greater, proceed to step 810; if it is greater, and the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is not less than the difference threshold, proceed to step 811.

[0179] Step 810, return to step 803.

[0180] Step 811: Stop the deformation analysis of the core to be analyzed and determine that the core deformation data of the core to be analyzed at the current moment is empty.

[0181] In one embodiment of this application, such as Figure 9 As shown, the core deformation analysis results can be determined through an input module, a calculation module, an analysis module, and an output module. Furthermore, it is pre-defined that the core to be analyzed needs to undergo core deformation analysis within a preset time period. This preset time period contains at least one time step, and each time step specifies the number of deformation analyses required for the core to be analyzed. Specifically: the stiffness parameters, environmental parameters, force parameters, component parameters of each fuel element to be analyzed, the total time, and the deformation data threshold are input into the input module. The input module then inputs the data into the calculation module, where calculations are performed according to the time steps to obtain the core deformation data for each time step. The core deformation data for each time step is then input into the analysis module to determine if the core deformation data exceeds the deformation data threshold. Based on the determination result, the core deformation data for each time step is output in the output module (which may include text output and graphical output). If the core deformation data is greater than or equal to the deformation data threshold, the corresponding time step and core deformation data also need to be output.

[0182] In the aforementioned fuel core deformation analysis method, the core deformation data of the core to be analyzed is determined by the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed. Because this application considers not only the external factors affecting the fuel core as in the prior art, but also the component parameters of the fuel elements and the component parameters of the fuel assemblies to be analyzed, this application considers more comprehensive factors in the deformation analysis of the core to be analyzed compared to the prior art. Therefore, the core deformation analysis results obtained are more accurate, enabling the core deformation analysis results to truly reflect the deformation status of the core to be analyzed. This ensures that core deformation alerts can be issued to personnel based on the core deformation data of the core to be analyzed, thereby reducing safety hazards during the operation of the core to be analyzed.

[0183] It should be understood that although the steps in the flowcharts of the above embodiments 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 above embodiments 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.

[0184] Based on the same inventive concept, this application also provides a fuel core deformation analysis apparatus for implementing the fuel core deformation analysis method described above. The solution provided by this apparatus is similar to the implementation described in the above method; therefore, the specific limitations in one or more embodiments of the fuel core deformation analysis apparatus provided below can be found in the limitations of the fuel core deformation analysis method described above, and will not be repeated here.

[0185] In one exemplary embodiment, such as Figure 10 As shown, a fuel core deformation analysis device is provided, comprising: a first determining module 10, a second determining module 20, a third determining module 30, and a fourth determining module 40, wherein:

[0186] The first determining module 10 is used to determine whether core deformation analysis is required for the core to be analyzed.

[0187] The second determining module 20 is used to, if necessary, perform deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, and determine the core deformation data of the core to be analyzed at the current time.

[0188] The third determining module 30 is used to determine whether the core deformation data meets the deformation analysis conditions. The deformation analysis conditions include the relationship between the number of deformation analyses performed on the core to be analyzed at the current time and the preset number of analyses. Furthermore, it is determined that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold.

[0189] The fourth determination module 40 is used to determine the core deformation analysis result of the core to be analyzed based on the relationship between the core deformation data and the deformation data threshold if the conditions are met.

[0190] In the aforementioned fuel core deformation analysis method, the core deformation data of the core to be analyzed is determined by the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed. Because this application considers not only the external factors affecting the fuel core as in the prior art, but also the component parameters of the fuel elements and the component parameters of the fuel assemblies to be analyzed, this application considers more comprehensive factors in the deformation analysis of the core to be analyzed compared to the prior art. Therefore, the core deformation analysis results obtained are more accurate, enabling the core deformation analysis results to truly reflect the deformation status of the core to be analyzed. This ensures that core deformation alerts can be issued to personnel based on the core deformation data of the core to be analyzed, thereby reducing safety hazards during the operation of the core to be analyzed.

[0191] In one exemplary embodiment, such as Figure 11 As shown, a fuel core deformation analysis device is provided, which further includes: a fifth determining module 50, a sixth determining module 60, and a seventh determining module 70, wherein:

[0192] The fifth determination module 50 is used to determine whether the number of deformation analyses performed on the core to be analyzed at the current moment is greater than the preset number if the condition is not met.

[0193] The sixth determination module 60 is used to return to the operation of performing deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, and determining the core deformation data of the core to be analyzed at the current time if the value is not greater than the value.

[0194] The seventh determination module 70 is used to determine that if the core deformation data obtained in this deformation analysis is greater than the difference between the core deformation data obtained in the previous deformation analysis and the difference threshold, the deformation analysis of the core to be analyzed will be stopped, and the core deformation data of the core to be analyzed at the current moment will be determined to be empty.

[0195] In one exemplary embodiment, such as Figure 12 As shown, a fuel core deformation analysis device is provided. The second determining module 20 of this device includes: a fourth determining unit 21 and a fifth determining unit 22, wherein:

[0196] The fourth determining unit 21 is used to perform deformation analysis on each fuel assembly to be analyzed based on the element parameters of at least one fuel element contained in each fuel assembly to be analyzed, and to determine the component deformation data of each fuel assembly to be analyzed.

[0197] The fifth determining unit 22 is used to perform deformation analysis on the core to be analyzed based on the component deformation data and component parameters of each fuel assembly to be analyzed, and to determine the core deformation data of the core to be analyzed.

[0198] In one exemplary embodiment, such as Figure 13 As shown, a fuel core deformation analysis device is provided. The fourth determining unit 21 in this device includes: a first determining subunit 211 and a second determining subunit 212, wherein:

[0199] The first determining subunit 211 is used to perform deformation analysis on each fuel element to be analyzed based on the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element to be analyzed is located, and to determine the element deformation data of each fuel element to be analyzed.

[0200] The second determining subunit 212 is used to perform deformation analysis on each fuel assembly to be analyzed based on the element deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed, and to determine the component deformation data of each fuel assembly to be analyzed.

[0201] In one exemplary embodiment, such as Figure 14 As shown, a fuel core deformation analysis device is provided. The first determining module 10 of this device includes: a first determining unit 11, a second determining unit 12, and a third determining unit 13, wherein:

[0202] The first determining unit 11 is used to determine whether the current moment belongs to the pre-set core deformation analysis time period.

[0203] The second determining unit 12 is used to determine, if it belongs to the category, that core deformation analysis of the core to be analyzed is required.

[0204] The third determining unit 13 is used to determine that if it does not belong to the core, then core deformation analysis is not required for the core to be analyzed.

[0205] In one exemplary embodiment, such as Figure 15 As shown, a fuel core deformation analysis device is provided. The fourth determining module 40 of this device includes: a sixth determining unit 41 and a seventh determining unit 42, wherein:

[0206] The sixth determining unit 41 is used to determine that the core deformation analysis result of the core to be analyzed is unqualified if the core deformation data is greater than or equal to the deformation data threshold.

[0207] The seventh determining unit 42 is used to determine the core deformation analysis result of the core to be analyzed as qualified if the core deformation data is less than the deformation data threshold.

[0208] Each module in the aforementioned fuel core deformation analysis device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the corresponding operations of each module.

[0209] In one exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 16 As 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 computational 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, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a fuel core deformation analysis method. 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.

[0210] Those skilled in the art will understand that Figure 16 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.

[0211] 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.

[0212] 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. This computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program 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 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, etc., and are not limited to these.

[0213] 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 specification.

[0214] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this 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 method for analyzing fuel core deformation, characterized in that, The method includes: Determine whether core deformation analysis of the reactor core to be analyzed is necessary at the current moment; If necessary, deformation analysis is performed on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time. Determine whether the core deformation data meets the deformation analysis conditions, wherein the deformation analysis conditions include whether the number of deformation analyses performed on the core to be analyzed at the current time has reached a preset number, and determine that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than a difference threshold. If the conditions are met, the core deformation analysis result of the core to be analyzed is determined based on the relationship between the core deformation data and the deformation data threshold. If not, determine whether the number of deformation analyses performed on the core to be analyzed at the current moment is greater than the preset number; If it is not greater than, then return to the operation of performing deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, to determine the core deformation data of the core to be analyzed at the current time. If the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current moment and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is not less than the difference threshold, then the deformation analysis of the core to be analyzed is stopped, and the core deformation data of the core to be analyzed at the current moment is determined to be empty.

2. The method according to claim 1, characterized in that, Based on the component parameters of at least one fuel assembly to be analyzed in the core to be analyzed, and the component parameters of at least one fuel element to be analyzed in each fuel assembly to be analyzed, a deformation analysis is performed on the core to be analyzed to determine the core deformation data, including: Based on the element parameters of at least one fuel element contained in each fuel assembly to be analyzed, deformation analysis is performed on each fuel assembly to be analyzed to determine the component deformation data of each fuel assembly to be analyzed. Based on the component deformation data and component parameters of each fuel assembly to be analyzed, deformation analysis is performed on the reactor core to be analyzed to determine the core deformation data of the reactor core to be analyzed.

3. The method according to claim 2, characterized in that, The component parameters include the stiffness parameters of each fuel element to be analyzed, the environmental parameters of the environment in which each fuel element to be analyzed is located, and the force parameters of the interaction between different fuel elements to be analyzed. Accordingly, the step of performing deformation analysis on each fuel assembly to be analyzed based on the element parameters of at least one fuel element included in each fuel assembly to be analyzed, and determining the component deformation data of each fuel assembly to be analyzed, includes: Based on the stiffness parameters of each fuel element to be analyzed and the environmental parameters of the environment in which each fuel element is located, deformation analysis is performed on each fuel element to be analyzed to determine the element deformation data of each fuel element to be analyzed. Based on the element deformation data of each fuel element to be analyzed and the force parameters of the interaction between different fuel elements to be analyzed, deformation analysis is performed on each fuel assembly to be analyzed to determine the component deformation data of each fuel assembly to be analyzed.

4. The method according to claim 1, characterized in that, Determining whether core deformation analysis is needed for the core to be analyzed includes: Determine whether the current moment falls within the pre-set core deformation analysis time period; If it falls under this category, then core deformation analysis of the reactor core to be analyzed is required. If it does not belong to the category, then it is determined that core deformation analysis is not required for the core to be analyzed.

5. The method according to claim 1, characterized in that, The step of determining the core deformation analysis result of the core to be analyzed based on the relationship between the core deformation data and the deformation data threshold includes: If the core deformation data is greater than or equal to the deformation data threshold, the core deformation analysis result of the core to be analyzed is determined to be unqualified. If the core deformation data is less than the deformation data threshold, then the core deformation analysis result of the core to be analyzed is determined to be qualified.

6. A fuel core deformation analysis device, characterized in that, The device includes: The first determination module is used to determine whether core deformation analysis of the reactor core to be analyzed is required at the current moment. The second determining module is used to, if necessary, perform deformation analysis on the core to be analyzed based on the component parameters of at least one fuel assembly to be analyzed contained in the core to be analyzed at the current time, and the component parameters of at least one fuel element to be analyzed contained in each fuel assembly to be analyzed at the current time, and determine the core deformation data of the core to be analyzed at the current time. The third determining module is used to determine whether the core deformation data meets the deformation analysis conditions. The deformation analysis conditions include the relationship between the number of deformation analyses performed on the core to be analyzed at the current time and the preset number of times. Furthermore, it is determined that the difference between the core deformation data obtained from the deformation analysis of the core to be analyzed at the current time and the core deformation data obtained from the previous deformation analysis of the core to be analyzed is less than the difference threshold. The fourth determining module is used to determine the core deformation analysis result of the core to be analyzed based on the relationship between the core deformation data and the deformation data threshold if the conditions are met.

7. 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 according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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