Method and apparatus for acquiring cross-section parameters

Abstract

The embodiment of the application discloses a kind of cross section parameter acquisition method and device, it is related to nuclear reactor technical field, method includes: obtaining the multiple pre-configured associated manufacturing parameters of fuel assembly;For each fuel assembly sub-region corresponding to fuel assembly, the following processing is executed, and the influence relationship information corresponding to multiple fuel assembly sub-regions is obtained: determine the first deviation value corresponding to the associated manufacturing parameter of fuel assembly on the corresponding fuel assembly sub-region;According to the first deviation value and the reference cross section parameter corresponding to fuel assembly sub-region, determine the influence relationship information corresponding to fuel assembly sub-region;According to the reference cross section parameter of multiple fuel assembly sub-regions, influence relationship information and multiple fuel assembly manufacturing parameters, determine the cross section parameter of the fuel assembly region where fuel assembly is located.The application can improve the acquisition efficiency of the cross section parameter of fuel assembly region by determining the influence relationship corresponding to fuel assembly sub-region in advance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear reactors, and particularly relates to a method and device for obtaining cross-section parameters. BACKGROUND

[0002] Core simulation plays an indispensable role in the design, operation and safety assessment of nuclear reactors. In core simulation calculation, cross-section parameters are essential basic data, which essentially determine the probability and manner of interaction between neutrons and matter, and play a decisive role in accurately evaluating key performance indicators such as reactivity and power distribution of the core. In the process of obtaining cross-section parameters, considering that each fuel assembly has its own unique manufacturing parameters, related technologies often use a way of traversing and calculating all manufacturing parameters one by one to obtain cross-section parameters related to the fuel assembly, and the efficiency of obtaining cross-section parameters in related technologies is low.

[0003] SUMMARY

[0004] Therefore, one of the purposes of the present application is to provide a method and device for obtaining cross-section parameters, which can improve the efficiency of obtaining cross-section parameters.

[0005] To achieve the above purpose, the technical scheme of the present application is as follows:

[0006] In a first aspect, the embodiments of the present application provide a method for obtaining cross-section parameters, comprising:

[0007] Obtaining a plurality of associated manufacturing parameters of the fuel assembly, the plurality of associated manufacturing parameters being parameters pre-configured for the fuel assembly, and the parameter types of the plurality of associated manufacturing parameters being the same as the parameter types of the fuel assembly manufacturing parameters of the fuel assembly;

[0008] For each fuel assembly sub-region in the plurality of fuel assembly sub-regions corresponding to the fuel assembly, the following processing is performed to obtain influence relationship information corresponding to the plurality of fuel assembly sub-regions: determining a first deviation value corresponding to the associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-region; determining the influence relationship information corresponding to the fuel assembly sub-region according to the first deviation value and a reference cross-section parameter corresponding to the fuel assembly sub-region, the influence relationship information being used to represent the influence relationship between the associated manufacturing parameter and the reference cross-section parameter, and the reference cross-section parameter being a cross-section parameter pre-configured for the fuel assembly sub-region;

[0009] In a case where a plurality of fuel assembly manufacturing parameters of the fuel assembly are determined, the cross-section parameter of a fuel assembly region in which the fuel assembly is located is determined according to the reference cross-section parameters corresponding to the plurality of fuel assembly sub-regions, the influence relationship information and the plurality of fuel assembly manufacturing parameters, and the fuel assembly region comprising the plurality of fuel assembly sub-regions.

[0010] In a possible implementation, before the method further comprises: determining, for each fuel assembly sub-region of the plurality of fuel assembly sub-regions corresponding to the fuel assembly, the influence relationship information of the fuel assembly sub-region, the method further comprises:

[0011] determining a first nominal design manufacturing parameter of the fuel assembly, the first nominal design manufacturing parameter being a theoretical parameter of the fuel assembly in a manufacturing process;

[0012] dividing the fuel assembly region according to the first nominal design manufacturing parameter, to obtain the plurality of fuel assembly sub-regions.

[0013] In a possible implementation, the first deviation value corresponding to the associated manufacturing parameter of the fuel assembly on the corresponding fuel assembly sub-region is determined, comprising:

[0014] determining, from the first nominal design manufacturing parameter, a second nominal design manufacturing parameter of the fuel assembly on the fuel assembly sub-region;

[0015] determining the first deviation value according to the second nominal design manufacturing parameter and the associated manufacturing parameter of the fuel assembly on the fuel assembly sub-region.

[0016] In a possible implementation, the cross-section parameter of the fuel assembly region in which the fuel assembly is located is determined according to the reference cross-section parameter corresponding to the plurality of fuel assembly sub-regions, the influence relationship information, and the fuel assembly manufacturing parameter, comprising:

[0017] determining a second deviation value corresponding to the plurality of fuel assembly sub-regions according to the fuel assembly manufacturing parameter and the first nominal design manufacturing parameter;

[0018] determining a correction value corresponding to the reference cross-section parameter of the plurality of fuel assembly sub-regions according to the influence relationship information and the deviation value corresponding to the plurality of fuel assembly sub-regions;

[0019] determining the cross-section parameter of the fuel assembly region in which the fuel assembly is located according to the reference cross-section parameter corresponding to the plurality of fuel assembly sub-regions and the correction value corresponding to each reference cross-section parameter.

[0020] In a possible implementation, before the influence relationship information corresponding to the fuel assembly sub-region is determined according to the first deviation value and the reference cross-section parameter corresponding to the fuel assembly sub-region, the method further comprises:

[0021] performing simulation on the second nominal design manufacturing parameter corresponding to the fuel assembly sub-region according to a preset simulation strategy, to obtain the reference cross-section parameter of the fuel assembly sub-region.

[0022] In a possible implementation, the plurality of fuel assembly manufacturing parameters of the fuel assembly are determined, comprising:

[0023] Obtaining all manufacturing parameters of the fuel assembly in a manufacturing process and a manufacturing precision value of each of the all manufacturing parameters;

[0024] Manufacturing parameters corresponding to manufacturing precision values less than or equal to a preset precision threshold are taken as fuel assembly manufacturing parameters, and a plurality of fuel assembly manufacturing parameters are obtained.

[0025] In a possible implementation, determining the influence relationship information of the fuel assembly sub-area includes:

[0026] According to the perturbation analysis method, the influence relationship information of the fuel assembly sub-area is determined.

[0027] In a second aspect, an embodiment of the present application provides a cross-section parameter acquisition device, which includes:

[0028] The acquisition module is configured to acquire a plurality of associated manufacturing parameters of the fuel assembly, the plurality of associated manufacturing parameters being parameters pre-configured for the fuel assembly, and the parameter types of the plurality of associated manufacturing parameters being the same as the parameter types of the fuel assembly manufacturing parameters of the fuel assembly;

[0029] The processing module is configured to perform the following processing on each of a plurality of fuel assembly sub-areas corresponding to the fuel assembly to obtain influence relationship information corresponding to the plurality of fuel assembly sub-areas: determining a first deviation value corresponding to the associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-area; and determining the influence relationship information corresponding to the fuel assembly sub-area according to the first deviation value and a reference cross-section parameter corresponding to the fuel assembly sub-area, the influence relationship information being used to represent an influence relationship between the associated manufacturing parameter and the reference cross-section parameter, and the reference cross-section parameter being a cross-section parameter pre-configured for the fuel assembly sub-area.

[0030] The determining module is configured to, in a case where the plurality of fuel assembly manufacturing parameters of the fuel assembly are determined, determine a cross-section parameter of a fuel assembly area in which the fuel assembly is located according to the reference cross-section parameter corresponding to the plurality of fuel assembly sub-areas, the influence relationship information, and the plurality of fuel assembly manufacturing parameters, the fuel assembly area including the plurality of fuel assembly sub-areas.

[0031] In a third aspect, an embodiment of the present application provides an electronic device, which includes a memory and a processor, and the memory has stored thereon a computer program, which, when executed by the processor, implements the cross-section parameter acquisition method provided in the first aspect.

[0032] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which has stored thereon a computer program, which, when executed by one or more processors, implements the cross-section parameter acquisition method provided in the first aspect.

[0033] The embodiment of the present application provides a cross-section parameter acquisition method, which can acquire a plurality of pre-configured associated manufacturing parameters of a fuel assembly, and perform the following processing on each fuel assembly sub-region in a plurality of fuel assembly sub-regions corresponding to the fuel assembly to obtain influence relationship information corresponding to the plurality of fuel assembly sub-regions. Then, a first deviation value corresponding to the associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-region is determined; and the influence relationship information corresponding to the fuel assembly sub-region is determined according to the first deviation value and a reference cross-section parameter corresponding to the fuel assembly sub-region. Finally, in the case of determining a plurality of fuel assembly manufacturing parameters of the fuel assembly, the cross-section parameter of a fuel assembly region where the fuel assembly is located is determined according to the reference cross-section parameter corresponding to the plurality of fuel assembly sub-regions, the influence relationship information and the plurality of fuel assembly manufacturing parameters. The present application determines the influence relationship corresponding to the fuel assembly sub-region in advance, and further improves the acquisition efficiency of the cross-section parameter of the fuel assembly region where the fuel assembly is located. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. It should be understood that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0035] Figure 1 A flow chart of a cross-section parameter acquisition method provided by the embodiment of the present application;

[0036] Figure 2 A schematic diagram of a fuel assembly related to a cross-section parameter acquisition method provided by the embodiment of the present application;

[0037] Figure 3 An influence relationship information diagram included in a cross-section parameter acquisition method provided by the embodiment of the present application;

[0038] Figure 4 Another influence relationship information diagram included in a cross-section parameter acquisition method provided by the embodiment of the present application;

[0039] Figure 5 A functional module schematic diagram of a cross-section parameter acquisition device provided by the embodiment of the present application;

[0040] Figure 6 An internal structure diagram of an electronic device provided by the embodiment of the present application.

[0041] Explanation of reference signs:

[0042] The cross-section parameter acquisition device 500, the acquisition module 510, the processing module 520, and the determination module 530. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0045] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0046] In various embodiments of the present application, the expression “or” or “at least one of A or / and B” includes any combination of the listed terms or all combinations. For example, the expression “A or B” or “at least one of A or / and B” can include A, can include B, or can include both A and B.

[0047] In the description of the present application, it should be noted that if the terms “upper”, “lower”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] In addition, if the terms “first”, “second”, and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0050] Also, in the embodiments of the present application, the term “connection” can mean “electrical connection”, and can also mean “direct connection”. “Electrical connection” can mean that two components are directly electrically connected, or can mean that two components are electrically connected via one or more other components such as a normally open tube.

[0051] To solve the technical problems in the background art, the embodiments of the present application provide a cross-section parameter acquisition method and device. First, the cross-section parameter acquisition method provided by the embodiments of the present application is introduced.

[0052] Please refer to Figure 1 , Figure 1 A flowchart of the cross-section parameter acquisition method provided by the embodiments of the present application, which can be applied to the cross-section parameter acquisition device or electronic equipment in the following embodiments. The electronic equipment includes personal computers, servers, mobile devices, cloud computing platforms, supercomputers, etc. The cross-section parameter acquisition method will be introduced from the application in electronic equipment, which specifically includes the following steps:

[0053] Step 110, obtaining a plurality of associated manufacturing parameters of the fuel assembly, the plurality of associated manufacturing parameters being parameters pre-configured for the fuel assembly, and the parameter types of the plurality of associated manufacturing parameters being the same as the parameter types of the fuel assembly manufacturing parameters of the fuel assembly.

[0054] Step 120, for each fuel assembly sub-region in the plurality of fuel assembly sub-regions corresponding to the fuel assembly, performing the following processing to obtain the influence relationship information corresponding to the plurality of fuel assembly sub-regions: determining a first deviation value corresponding to the associated manufacturing parameter of the fuel assembly on the corresponding fuel assembly sub-region; determining the influence relationship information corresponding to the fuel assembly sub-region according to the first deviation value and the reference cross-section parameter corresponding to the fuel assembly sub-region, the influence relationship information being used to represent the influence relationship between the associated manufacturing parameter and the reference cross-section parameter, and the reference cross-section parameter being a cross-section parameter pre-configured for the fuel assembly sub-region.

[0055] Step 130, in the case of determining the fuel assembly manufacturing parameter of the fuel assembly, determining the cross-section parameter of the fuel assembly region where the fuel assembly is located according to the reference cross-section parameter corresponding to the plurality of fuel assembly sub-regions, the influence relationship information and the fuel assembly manufacturing parameter, the fuel assembly region including the plurality of fuel assembly sub-regions.

[0056] The embodiment of the present application provides a cross-section parameter acquisition method, which can acquire a plurality of pre-configured associated manufacturing parameters of a fuel assembly, and perform the following processing on each fuel assembly sub-region in a plurality of fuel assembly sub-regions corresponding to the fuel assembly to obtain influence relationship information corresponding to the plurality of fuel assembly sub-regions. Then, a first deviation value corresponding to the associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-region is determined; and the influence relationship information corresponding to the fuel assembly sub-region is determined according to the first deviation value and a reference cross-section parameter corresponding to the fuel assembly sub-region. Finally, in the case of determining a plurality of fuel assembly manufacturing parameters of the fuel assembly, the cross-section parameter of a fuel assembly region where the fuel assembly is located is determined according to the reference cross-section parameter corresponding to the plurality of fuel assembly sub-regions, the influence relationship information, and the plurality of fuel assembly manufacturing parameters. The influence relationship corresponding to the fuel assembly sub-region is determined in advance, so that the acquisition efficiency of the cross-section parameter of the fuel assembly region where the fuel assembly is located can be improved.

[0057] The following will be a detailed description of each step of the method. Figure 1

[0058] In step 110, a plurality of associated manufacturing parameters of the fuel assembly are acquired, which can be realized by the electronic device mentioned above.

[0059] The fuel assembly is a key component of the nuclear reactor core, and can enable the fuel to safely and efficiently perform nuclear fission reaction in the reactor.

[0060] In some embodiments, the fuel assembly can include fuel element rods (or fuel rods). Accordingly, the parameter types of the plurality of associated manufacturing parameters of the fuel assembly and the manufacturing parameters of the fuel assembly include parameters related to the fuel element rods, such as fuel pellet parameters and cladding parameters.

[0061] In some embodiments, the fuel assembly can include fuel element rods and control rod assemblies. Accordingly, the parameter types of the plurality of associated manufacturing parameters of the fuel assembly and the manufacturing parameters of the fuel assembly include parameters related to the fuel element rods and the control rod assemblies, such as fuel pellet parameters, cladding parameters, control rod sizes, and control rod densities.

[0062] The associated manufacturing parameter refers to a parameter pre-configured for the fuel assembly. Specifically, the associated manufacturing parameter can be determined according to a parameter set corresponding to the fuel assembly produced by a production line generating the fuel assembly under a corresponding production manufacturing standard.

[0063] ​In some embodiments, a plurality of associated manufacturing parameters of the fuel assembly can be randomly selected from different types of parameters in the parameter set. It should be noted that in the subsequent calculation process, the cross-section parameters of the fuel assembly region need to be determined in combination with the fuel assembly manufacturing parameters of the fuel assembly, and therefore, the parameter types of the plurality of associated manufacturing parameters should be the same as the parameter types of the fuel assembly manufacturing parameters used to determine the cross-section parameters, and the plurality of associated manufacturing parameters can include a plurality of parameter types.

[0064] The fuel assembly manufacturing parameters refer to a series of physical, chemical and geometric indicators that have an impact on the core power results in the production of the fuel assembly, and the importance of the fuel assembly manufacturing parameters to the performance, safety and reliability of the fuel assembly is self-evident. It should be noted that the fuel assembly manufacturing parameters can be understood as actual fuel assembly manufacturing parameters, and after the plurality of associated manufacturing parameters of the fuel assembly are determined in the subsequent step, the plurality of fuel assembly manufacturing parameters of the fuel assembly can be obtained and combined with the influence relationship information to determine the cross-section parameters of the fuel assembly region.

[0065] For the fuel assembly manufacturing parameters, exemplarily, in terms of physical indicators, the fuel assembly manufacturing parameters can include the enrichment of the fuel, the density of the fuel pellets, the density of the control rods, etc. In terms of chemical indicators, the fuel assembly manufacturing parameters can include the composition of the fuel rods and the concentration of each component. In terms of geometric parameters, the fuel assembly manufacturing parameters can include the length and diameter of the fuel rods and the grid spacing between different grids for positioning the fuel rods.

[0066] It should be noted that the fuel assembly manufacturing parameters in the embodiments of the present application mainly refer to manufacturing parameters related to neutron calculation, such as the enrichment of the fuel and the spacing of the fuel rods.

[0067] The above only introduces the composition of the fuel assembly and the related effects, in order to facilitate further understanding of the fuel assembly, exemplarily, please refer to Figure 2 , Figure 2 The schematic diagram of the fuel assembly involved in the method for obtaining cross-section parameters provided in the embodiments of the present application.

[0068] Figure 2 (a) in the figure shows a reactor core, and it can be found that the reactor core is composed of more than 100 groups of fuel assemblies arranged in a certain manner.

[0069] Figure 2 (b) in the figure shows a fuel assembly, and it can also be found that the fuel assembly is composed of a certain number of fuel rods, guide tubes and instrument tubes, and the depth of the control rods inserted into the guide tubes is adjusted to achieve the adjustment of the reactivity.

[0070] In some embodiments, Figure 2 The fuel rods in (b) can be replaced by a preset number of poison rods.

[0071] In some embodiments, the preset number can be configured as 4 or 8. Of course, the preset number can be adjusted by the electronic device according to actual conditions. Although it is shown here that the fuel rods can be replaced by 4 poison rods or 8 poison rods for the purpose of illustration, the fuel rods can be replaced by fewer or more poison rods based on actual needs, which are all within the protection scope of the embodiments of the present application.

[0072] In some embodiments, the obtaining instruction can include a preset obtaining manner, and the obtaining instruction can be used to instruct the electronic device to obtain the plurality of fuel assembly manufacturing parameters of the fuel assembly in the preset obtaining manner.

[0073] The preset obtaining manner can include at least one of non-destructive testing techniques such as ultrasonic testing and radiographic testing. The electronic device can obtain the size, accuracy, cladding thickness, and other fuel assembly manufacturing parameters of the fuel rods in the fuel assembly by ultrasonic testing or radiographic testing.

[0074] In step 120, the electronic device can process each fuel assembly sub-region to obtain the corresponding influence relationship information of each fuel assembly sub-region. By determining the influence relationship information first, after determining the fuel assembly manufacturing parameters of the fuel assembly in the subsequent steps, the cross-sectional parameters of the fuel assembly region can be quickly determined based on the influence relationship information.

[0075] The fuel assembly sub-region can refer to each sub-region included in the fuel assembly region, and the fuel assembly region refers to the region where the fuel assembly is located.

[0076] As an example, the fuel assembly region can include a fuel rod region, a cladding region, a coolant channel region, a control rod guide tube region, and the like. The example is for the purpose of illustration and does not limit the specific fuel assembly sub-regions included in the fuel assembly region.

[0077] Each fuel assembly sub-region in the plurality of fuel assembly sub-regions is processed by the electronic device in the same way, and the corresponding influence relationship information of each fuel assembly sub-region can be obtained. The influence relationship information can be obtained by numerical simulation of the electronic device.

[0078] Taking any fuel assembly sub-region, such as fuel assembly sub-region 001 as an example, the electronic device can determine the influence relationship information of the fuel assembly sub-region 001 according to the associated manufacturing parameters of the fuel assembly on the fuel assembly sub-region 001 and the reference cross-section parameters corresponding to the fuel assembly sub-region 001. Specifically, a first deviation value corresponding to the associated manufacturing parameters on the fuel assembly sub-region 001 can be determined first, and then the influence relationship information corresponding to the fuel assembly sub-region 001 can be determined according to the first deviation value and the reference cross-section parameters corresponding to the fuel assembly sub-region 001.

[0079] The above influence relationship information can be used to represent the influence relationship between the associated manufacturing parameters of the fuel assembly on the fuel assembly sub-region 001 and the reference cross-section parameters corresponding to the fuel assembly sub-region 001. 001 is only identification information of the fuel assembly sub-region and can be used to distinguish different fuel assembly sub-regions, but does not specifically refer to the order of the fuel assembly sub-regions.

[0080] The reference cross-section parameters corresponding to the fuel assembly sub-region 001 can be cross-section parameters pre-configured by the electronic device for the fuel assembly sub-region 001. It should be noted that the electronic device can pre-configure multiple reference cross-section parameters for the fuel assembly sub-region 001, and each reference cross-section parameter is a different type of cross-section parameter, such as a total cross-section, a scattering cross-section, a fission cross-section, etc. The fuel assembly sub-region 001 can correspond to multiple reference cross-section parameters of different types, the fuel assembly sub-region 002 can correspond to multiple reference cross-section parameters of different types, and the fuel assembly sub-region n can correspond to multiple reference cross-section parameters of different types.

[0081] In some embodiments, the numerical values of the reference cross-section parameters of different types are different.

[0082] In some embodiments, the reference cross-section parameters corresponding to the fuel assembly sub-region 001 can be determined based on the reactor physics theory and stored in the electronic device.

[0083] For example, the reactor physics theory can be the basic definition of the neutron transport equation and the nuclear reaction cross-section, combined with the material composition, density, and other information of the fuel assembly, the cross-section parameters of the interaction between neutrons and fuel nuclides at different energies, i.e., the reference cross-section parameters corresponding to the fuel assembly sub-region 001, can be calculated.

[0084] In some embodiments, the reference cross-section parameters corresponding to the fuel assembly sub-region 001 can be determined by related professional nuclear reactor nuclear physics calculation software and stored in the electronic device.

[0085] For example, relevant professional nuclear reactor physics calculation software can include OpenMC (an open-source nuclear reactor simulation software) or PCM. When using OpenMC or PCM, information such as the fuel assembly's geometry and material composition can be used as input data. OpenMC or PCM outputs the cross-sectional parameters of the fuel assembly under different conditions, i.e., the reference cross-sectional parameters corresponding to fuel assembly sub-region 001.

[0086] To further clarify the above-mentioned influence relationship information, an example is given by correlating manufacturing parameters with the thermal group macroscopic absorption cross section (a type of reference cross section parameter). Figure 3 , Figure 3 An influence relationship information diagram included in a method for obtaining cross-sectional parameters provided in an embodiment of the present application.

[0087] Figure 3 (a) shows the influence relationship between the theoretical density, a related manufacturing parameter, and the reference cross-sectional parameter of the thermal group macroscopic absorption cross-section type.

[0088] Figure 3 (b) shows the influence relationship between the associated manufacturing parameter of the fuel pellet radius and the reference cross-sectional parameter of the type of thermal group macroscopic absorption cross-section.

[0089] Figure 3 (c) shows the influence relationship between the fuel enrichment, a related manufacturing parameter, and the reference cross-section parameter of the thermal group macroscopic absorption cross-section type.

[0090] Figure 3 (d) shows the influence relationship between the associated manufacturing parameter of the absorber core block radius and the reference cross-sectional parameter of the type of thermal group macroscopic absorption cross-section.

[0091] It can be found that Figure 3 The influence relationship information between the associated manufacturing parameters and the reference section parameters is a linear fitting function relationship.

[0092] Still with the above Figure 3 The example in [1] is used to illustrate the associated manufacturing parameters (including theoretical density, fuel pellet radius, fuel enrichment, and absorber pellet radius) and the uranium-235 (U-235) microscopic hot group fission cross section (another type of reference cross section parameter). Figure 4 , Figure 4 Another influence relationship information diagram included in a method for obtaining cross-section parameters provided in an embodiment of the present application.

[0093] Figure 4The (a) in the figure shows the influence relationship between the theoretical density and the U-235 microscopic thermal group fission cross section.

[0094] Figure 4 The (b) in the figure shows the influence relationship between the fuel pellet radius and the U-235 microscopic thermal group fission cross section.

[0095] Figure 4 The (c) in the figure shows the influence relationship between the fuel enrichment and the U-235 microscopic thermal group fission cross section.

[0096] Figure 4 The (d) in the figure shows the influence relationship between the absorber pellet radius and the U-235 microscopic thermal group fission cross section.

[0097] It can be found that, Figure 4 The influence relationship information between the associated manufacturing parameters and the reference cross section parameters in the figure is also a linear fitting function relationship.

[0098] In some embodiments, Figure 3 and Figure 4 The function form of the influence relationship information in the figure can be obtained by the electronic device through simulation test.

[0099] The first deviation value described above can be a deviation value of the associated manufacturing parameter of the fuel assembly on the fuel assembly sub-region, and the first deviation value can be used to determine the reference cross section parameter corresponding to the fuel assembly sub-region.

[0100] The electronic device can obtain the influence relationship information corresponding to each fuel assembly sub-region of the fuel assembly by performing the above processing on each fuel assembly sub-region of the fuel assembly.

[0101] In step 130, the electronic device can determine the fuel assembly manufacturing parameter (actual fuel assembly manufacturing parameter) of the fuel assembly, and then determine the cross section parameter of the fuel assembly region where the fuel assembly is located according to the reference cross section parameter and the influence relationship information corresponding to each fuel assembly sub-region obtained in the foregoing steps.

[0102] Specifically, still taking the fuel assembly sub-region 001 in the foregoing example as an example, the influence relationship information F(Δa) corresponding to the fuel assembly sub-region 001, Δa can be determined according to the fuel assembly manufacturing parameter of the fuel assembly, and can be used to characterize the deviation value (i.e., the second deviation value in the following embodiments) corresponding to the fuel assembly manufacturing parameter, that is, the electronic device can substitute the deviation value corresponding to the fuel assembly manufacturing parameter of the fuel assembly sub-region 001 into the influence relationship information corresponding to the fuel assembly sub-region 001, and then combine the reference cross section parameter corresponding to the fuel assembly sub-region 001 to jointly determine the sub-cross section parameter of the fuel assembly sub-region 001.

[0103] For example, the fuel assembly region where the fuel assembly is located includes fuel assembly sub-region 002, fuel assembly sub-region 003, ..., fuel assembly sub-region n, where n is a positive integer. By determining the sub-cross-sectional parameters of each fuel assembly sub-region, and based on all the sub-cross-sectional parameters, the cross-sectional parameters of the fuel assembly region where the fuel assembly is located can be determined.

[0104] The sub-section parameters A1 corresponding to the fuel assembly sub-region 001 may include different types of section parameters, such as total section, scattering section, fission section, etc. In some embodiments, the sub-section parameters A1 include total section, scattering section and fission section, which can be expressed as A 11 、A 12 and A 13 represent the total cross section, scattering cross section and fission cross section respectively, then the sub-cross section parameter A1 can be expressed as A1(A 11 ,A 12 ,A 13 ).

[0105] Correspondingly, if the sub-section parameter A2 corresponding to the fuel assembly sub-region 002 also includes the total cross section, scattering cross section and fission cross section, A 21 、A 22 and A 23 represent the total cross section, scattering cross section and fission cross section respectively, then the sub-cross section parameter A2 can be expressed as A2(A 21 ,A 22 ,A 23 ).

[0106] Accordingly, the sub-section parameter A n It can be expressed as A n (A n1 ,A n2 ,A n3 )

[0107] The sub-section parameter A1 (A 11 ,A 12 ,A 13 ) An example is as follows:

[0108] A 11 =xs 11 +[F(Δa1)-xs 11 ]+[F(Δa2)-xs 11 ]+…+[F(Δa n )-xs 11 ], (1)

[0109] A 12 =xs 12 +[F(Δa1)-xs 12]+[F(Δa2)-xs 12 ]+…+[F(Δa n )-xs 12 ], (2)

[0110] A 13 =xs 13 +[F(Δa1)-xs 13 ]+[F(Δa2)-xs 13 ]+…+[F(Δa n )-xs 13 ], (3)

[0111] Wherein:

[0112] xs 11 represents the reference cross section parameter of the fuel assembly sub-region 001 corresponding to the type of total cross section;

[0113] xs 12 represents the reference cross section parameter of the fuel assembly sub-region 001 corresponding to the type of scattering cross section;

[0114] xs 13 represents the reference cross section parameter of the fuel assembly sub-region 001 corresponding to the type of fission cross section;

[0115] Δa1 represents the deviation value corresponding to the first fuel assembly manufacturing parameter such as the theoretical density of the fuel assembly sub-region 001;

[0116] Δa2 represents the deviation value corresponding to the second fuel assembly manufacturing parameter such as the fuel pellet radius of the fuel assembly sub-region 001;

[0117] Δa3 represents the deviation value corresponding to the third fuel assembly manufacturing parameter such as the absorber pellet radius of the fuel assembly sub-region 001;

[0118] F(Δa1) represents the influence relationship information formed by the fuel assembly manufacturing parameter being the theoretical density of the fuel assembly sub-region 001;

[0119] F(Δa2) represents the influence relationship information formed by the fuel assembly manufacturing parameter being the fuel pellet radius of the fuel assembly sub-region 001;

[0120] F(Δa3) represents the influence relationship information formed by the fuel assembly manufacturing parameter being the absorber pellet radius of the fuel assembly sub-region 001.

[0121] The specific forms of the above sub-cross section parameters A2 to sub-cross section parameters A n can be referred to A1 above, which will not be exemplified one by one here.

[0122] In the case of determining the sub-cross section parameters A1 to A n , the cross section parameter A of the fuel assembly region where the fuel assembly is located can be expressed as follows:

[0123] A = (A1, A2, …, A n ), (4)

[0124] It should be noted that taking the fuel assembly sub-region 001 as an example, if the influence relationship information corresponding to the fuel assembly sub-region 001 includes multiple function relationships such as Figure 3 or Figure 4 , the influence relationship information F(Δa) corresponding to the fuel assembly sub-region 001 can include F(Δa1), F(Δa2), and F(Δa3).

[0125] In some embodiments, the cross section parameter of the fuel assembly region can be different types of cross section parameters, such as total cross section, scattering interface, fission cross section, such as thermal group macroscopic absorption cross section in Figure 3 , such as U-235 microscopic thermal group fission cross section in Figure 4 .

[0126] In the case of the type of cross section parameter being the total cross section, the electronic device can determine the influence relationship information between the fuel assembly manufacturing parameters corresponding to each fuel assembly sub-region and the total cross section of the fuel assembly sub-region through the aforementioned simulation test. For the type of cross section parameter being other than the total cross section, this will not be exemplified one by one here.

[0127] In one possible implementation, before the method obtains the influence relationship information corresponding to the plurality of fuel assembly sub-regions by performing the following processing on each of the plurality of fuel assembly sub-regions corresponding to the fuel assembly, the method further includes:

[0128] determining a first nominal design manufacturing parameter of the fuel assembly, the first nominal design manufacturing parameter being a theoretical parameter of the fuel assembly in a manufacturing process;

[0129] dividing the fuel assembly region according to the first nominal design manufacturing parameter to obtain a plurality of fuel assembly sub-regions.

[0130] The embodiments of the present application can quickly realize division, reduce the number of calculation regions, and improve the efficiency of determining the plurality of fuel assembly sub-regions by dividing the fuel assembly region where the fuel assembly is located according to the first nominal design manufacturing parameter.

[0131] The first nominal design manufacturing parameter can refer to a standard parameter set for the fuel assembly during the design and manufacturing process. The first nominal design manufacturing parameter can include different types of parameters, which can be understood in the foregoing embodiments about the manufacturing parameters or the associated manufacturing parameters of the fuel assembly, and will not be described here.

[0132] The first nominal design manufacturing parameter can also be understood as a standard parameter corresponding to the fuel assembly region where the fuel assembly is located.

[0133] In some embodiments, the electronic device stores a reactor design file, which contains a series of indicators in physical, chemical, and geometric aspects involved in the production of the fuel assembly. By querying the reactor design file, the first nominal design manufacturing parameter of the fuel assembly can be determined.

[0134] In some embodiments, the electronic device also stores an association relationship, which can be the relationship between the reactor design file and the reactor type. Specifically, after determining the reactor type, the corresponding reactor design file can be quickly determined through the association relationship, and then the first nominal design manufacturing parameter of the fuel assembly can be quickly queried from the reactor design file.

[0135] In some embodiments, the fuel assemblies using the same first nominal design manufacturing parameter are of the same type. It can be understood that the fuel assembly sub-regions where the fuel assemblies using the same first nominal design manufacturing parameter are located are of the same region type.

[0136] Specifically, for the fuel assembly sub-regions of the same region type, such as A1 and A2 in the foregoing example, in the process of determining the cross-sectional parameter of the fuel assembly region where the fuel assembly is located in step 130, only the sub-cross-sectional parameter of any fuel assembly sub-region in the fuel assembly sub-regions of the same region type needs to be calculated. Thus, the above formula (4) can be updated and represented as follows:

[0137] A = (A1, A3, A4, …, A n-1 , A n ), (5)

[0138] Or update and represent the above formula (4) as:

[0139] A = (A2, A3, A4, …, A n-1 , A n ), (6)

[0140] In one possible implementation, determining the first deviation value corresponding to the associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-region comprises:

[0141] determine, from the first nominal design manufacturing parameter, a second nominal design manufacturing parameter of the fuel assembly on a fuel assembly sub-region;

[0142] determine, according to the second nominal design manufacturing parameter and the associated manufacturing parameter on the fuel assembly sub-region, a first deviation value.

[0143] The embodiment of the present application can accurately determine the first deviation value corresponding to the fuel assembly sub-region through the second nominal design manufacturing parameter and the associated manufacturing parameter on the fuel assembly sub-region.

[0144] The first nominal design manufacturing parameter of the fuel assembly and the second nominal design manufacturing parameter corresponding to each fuel assembly sub-region can be understood as a standard fuel assembly manufacturing parameter.

[0145] Taking the fuel assembly sub-region 001 as an example, in some embodiments, the first deviation value Δa1 corresponding to the fuel assembly sub-region 001 is the absolute value of the difference between the associated manufacturing parameter corresponding to the fuel assembly sub-region 001 and the second nominal design manufacturing parameter corresponding to the fuel assembly sub-region 001.

[0146] In the foregoing embodiment, the first nominal design manufacturing parameter of the fuel assembly can be obtained from the reactor design file, and in some embodiments, the reactor design file also stores region information corresponding to the first nominal design manufacturing parameter, which is the region information of the fuel assembly. Through the region information of the fuel assembly and the first nominal design manufacturing parameter, the second nominal design manufacturing parameter associated with each fuel assembly sub-region can be determined.

[0147] In a possible implementation, according to the reference cross-sectional parameter corresponding to each fuel assembly sub-region, the influence relationship information and the fuel assembly manufacturing parameter, a cross-sectional parameter of a fuel assembly region where the fuel assembly is located is determined, including:

[0148] determine, according to the fuel assembly manufacturing parameter and the first nominal design manufacturing parameter, a second deviation value corresponding to each fuel assembly sub-region;

[0149] determine, according to the influence relationship information and the deviation value corresponding to each fuel assembly sub-region, a correction value corresponding to the reference cross-sectional parameter of each fuel assembly sub-region;

[0150] determine, according to the reference cross-sectional parameter corresponding to each fuel assembly sub-region and the correction value corresponding to each reference cross-sectional parameter, the cross-sectional parameter of the fuel assembly region where the fuel assembly is located.

[0151] The embodiment of the present application determines the correction value corresponding to the reference cross-sectional parameter of each fuel assembly sub-region, and corrects the reference cross-sectional parameter based on the correction value, thereby improving the accuracy of determining the cross-sectional parameter of the fuel assembly region where the fuel assembly is located.

[0152] Still taking the fuel assembly sub-region 001 as an example, the correction value corresponding to the reference cross-section parameter of the fuel assembly sub-region can be F(Δa1) in the formula (1) of the foregoing embodiment, and the determination manner of the correction value will not be described herein.

[0153] The second deviation value is a deviation value between the fuel assembly manufacturing parameter (i.e., the actual fuel assembly manufacturing parameter) and the first nominal design manufacturing parameter.

[0154] It should be noted that in the case where the fuel assembly manufacturing parameter corresponding to the fuel assembly sub-region 001 is multiple, there are multiple influence relationship information and multiple deviation values for the fuel assembly sub-region 001, and the influence relationship information F(Δa) corresponding to the fuel assembly sub-region 001 can include the influence relationship information corresponding to each fuel assembly manufacturing parameter.

[0155] F(Δa1), F(Δa2), and F(Δa3) can represent the function relationship after different deviation values are substituted, and F(Δa) formed by F(Δa1), F(Δa2), and F(Δa3) can be used as the correction value corresponding to the fuel assembly sub-region 001, and each fuel assembly sub-region corresponds to a correction value.

[0156] In a possible implementation, before determining the influence relationship information corresponding to the fuel assembly sub-region according to the first deviation value and the reference cross-section parameter corresponding to the fuel assembly sub-region, the method further includes:

[0157] Simulating the second nominal design manufacturing parameter corresponding to the fuel assembly sub-region according to a preset simulation strategy to obtain the reference cross-section parameter of the fuel assembly sub-region.

[0158] The reference cross-section parameter of the fuel assembly sub-region can be accurately determined by the preset simulation strategy.

[0159] Specifically, the preset simulation strategy includes using a nuclear reactor physics calculation software. In some embodiments, the electronic device can simulate and calculate the second nominal design parameter corresponding to each fuel assembly sub-region by using the professional calculation software such as the OpenMC software and the PCM software mentioned in the foregoing embodiments, respectively, to obtain the reference cross-section parameter of each fuel assembly sub-region.

[0160] In a possible implementation, the plurality of fuel assembly manufacturing parameters of the fuel assembly are determined, including:

[0161] Obtaining all manufacturing parameters of the fuel assembly in the manufacturing process and a manufacturing precision value of each manufacturing parameter in the all manufacturing parameters;

[0162] The manufacturing parameter corresponding to the manufacturing precision value less than or equal to the preset precision threshold is taken as the fuel assembly manufacturing parameter, and a plurality of fuel assembly manufacturing parameters are obtained.

[0163] The embodiment of the present application can indirectly improve the efficiency of determining the cross-section parameter in the process of determining the cross-section parameter of the fuel assembly region where the fuel assembly is located by screening the fuel assembly manufacturing parameters, and the number of the screened fuel assembly manufacturing parameters is reduced.

[0164] The parameter types of the plurality of associated manufacturing parameters of the fuel assembly in the foregoing embodiment are the same as the parameter types of the plurality of fuel assembly manufacturing parameters in the present embodiment.

[0165] Generally, the manufacturing precision value with a high value has a small manufacturing error, and correspondingly, the manufacturing precision value with a low value has a large manufacturing error. The manufacturing parameter corresponding to the manufacturing precision value with a high value can cause a small difference in the reactor core parameter in the actual manufacturing process.

[0166] The manufacturing parameter corresponding to the manufacturing precision value less than or equal to the preset precision threshold is taken as the fuel assembly manufacturing parameter, which can reduce the number of the fuel assembly manufacturing parameters, and further improve the efficiency of determining the cross-section parameter of the fuel assembly region where the fuel assembly is located. On the other hand, the electronic device can further determine the correction value of the reference cross-section parameter corresponding to the fuel assembly sub-region by means of the deviation value determined by the fuel assembly manufacturing parameter with a small manufacturing precision value and a large manufacturing error, and further correct the reference cross-section parameter, thereby reducing the influence of the fuel assembly manufacturing parameter with a small manufacturing precision value and a large manufacturing error on the cross-section parameter of the fuel assembly region, and further improving the accuracy and reliability of determining the cross-section parameter of the fuel assembly region.

[0167] In a possible implementation, the influence relationship information of the fuel assembly sub-region is determined, including:

[0168] According to the perturbation analysis method, the influence relationship information of the fuel assembly sub-region is determined.

[0169] The electronic device can determine the influence relationship information of each fuel assembly sub-region based on the perturbation analysis method, for example, Figure 3 and Figure 4 The influence relationship information in the function form in the foregoing embodiment can be obtained by the perturbation analysis method. The perturbation analysis method can be referred to in the related art, and will not be described here.

[0170] In some embodiments, the cross-section parameters of the fuel assembly region can be used to simulate the reactor core. It should be noted that, due to the large number of fuel assemblies in the core and the random differences in the manufacturing parameters of each batch of fuel assemblies, and the loading of new batches of fuel assemblies in each refueling cycle, the simulation process in the related art is very complicated and needs to be repeated each time the fuel is replaced.

[0171] In the embodiment, the cross-section parameters of the fuel assembly region are obtained by dividing the fuel assembly region in which the fuel assembly is located, and according to the foregoing embodiment, for the first nominal design manufacturing parameter participating in the division, the region type of the fuel assembly sub-region in which the fuel assembly using the same first nominal design manufacturing parameter is located is the same, and in the calculation process of the cross-section parameters of the fuel assembly region, only the sub-cross-section parameters of any fuel assembly sub-region of the fuel assembly sub-region of the same region type can be calculated, thereby reducing the calculation amount and improving the simulation efficiency when simulating the reactor core.

[0172] Corresponding to the method embodiments, the embodiment of the present application also provides a cross-section parameter acquisition device, please see Figure 5 , Figure 5 The function module schematic diagram of the cross-section parameter acquisition device provided by the embodiment of the present application is shown in the figure, wherein the cross-section parameter acquisition device 500 comprises:

[0173] The acquisition module 510 is configured to acquire a plurality of associated manufacturing parameters of the fuel assembly, the plurality of associated manufacturing parameters being parameters pre-configured for the fuel assembly, and the parameter types of the plurality of associated manufacturing parameters being the same as the parameter types of the fuel assembly manufacturing parameters of the fuel assembly.

[0174] The processing module 520 is configured to perform the following processing on each fuel assembly sub-region in the plurality of fuel assembly sub-regions corresponding to the fuel assembly to obtain the influence relationship information corresponding to the plurality of fuel assembly sub-regions: determining a first deviation value corresponding to the associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-region; determining the influence relationship information corresponding to the fuel assembly sub-region according to the first deviation value and the reference cross-section parameter corresponding to the fuel assembly sub-region, the influence relationship information being used to represent the influence relationship between the associated manufacturing parameter and the reference cross-section parameter, and the reference cross-section parameter being a cross-section parameter pre-configured for the fuel assembly sub-region.

[0175] The determination module 530 is configured to, in a case where the plurality of fuel assembly manufacturing parameters of the fuel assembly are determined, determine the cross-section parameter of the fuel assembly region in which the fuel assembly is located according to the reference cross-section parameters corresponding to the plurality of fuel assembly sub-regions, the influence relationship information and the fuel assembly manufacturing parameters, the fuel assembly region comprising the plurality of fuel assembly sub-regions.

[0176] The cross-section parameter acquisition device provided by the embodiments of the present application can realize Figure 1 The various processes realized by the method embodiments of the present application and the similar or same technical effects can be achieved, and thus details are not repeated here.

[0177] In a possible implementation, the cross-section parameter acquisition device 500 further includes a division module, which is configured to:

[0178] determine a first nominal design and manufacturing parameter of the fuel assembly, the first nominal design and manufacturing parameter being a theoretical parameter of the fuel assembly in a manufacturing process;

[0179] divide the fuel assembly region according to the first nominal design and manufacturing parameter, to obtain a plurality of fuel assembly sub-regions.

[0180] In a possible implementation, the division module further includes a division sub-module, which is configured to:

[0181] determine, from the first nominal design and manufacturing parameter, a second nominal design and manufacturing parameter of the fuel assembly on the fuel assembly sub-region;

[0182] determine a first deviation value according to the second nominal design and manufacturing parameter and the associated manufacturing parameter on the fuel assembly sub-region.

[0183] In a possible implementation, the determination module 530 is specifically configured to:

[0184] determine a second deviation value corresponding to each of the plurality of fuel assembly sub-regions according to the fuel assembly manufacturing parameter and the first nominal design and manufacturing parameter;

[0185] determine a correction value corresponding to the reference cross-section parameter of the plurality of fuel assembly sub-regions according to the influence relationship information and the deviation value corresponding to each of the plurality of fuel assembly sub-regions;

[0186] determine the cross-section parameter of the fuel assembly region in which the fuel assembly is located according to the reference cross-section parameter corresponding to each of the plurality of fuel assembly sub-regions and the correction value corresponding to each reference cross-section parameter.

[0187] In a possible implementation, the cross-section parameter acquisition device 500 further includes a simulation module, which is configured to:

[0188] simulate the second nominal design and manufacturing parameter corresponding to the fuel assembly sub-region according to a preset simulation strategy, to obtain the reference cross-section parameter of the fuel assembly sub-region.

[0189] In a possible implementation, the acquisition module 510 is specifically configured to:

[0190] Obtaining all manufacturing parameters of the fuel assembly in a manufacturing process, and a manufacturing precision value of each of the manufacturing parameters;

[0191] Manufacturing parameters corresponding to manufacturing precision values less than or equal to a preset precision threshold are taken as fuel assembly manufacturing parameters, and a plurality of fuel assembly manufacturing parameters are obtained.

[0192] In a possible implementation, the processing module 520 further includes a processing sub-module, configured to:

[0193] According to the perturbation analysis method, the influence relationship information of the fuel assembly sub-region is determined.

[0194] The embodiment of the present application also provides an electronic device, and the present application also provides an electronic device. Please refer to Figure 6 , Figure 6 An internal structure diagram of an electronic device provided by the embodiment of the present application. The electronic device includes a processor, a memory and a network interface connected through a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the electronic device stores an operating system, and can also store a computer program. When the computer program is executed by the processor, the processor can implement the cross-section parameter acquisition method applied to the electronic device in the above embodiment. The internal memory can also store a computer program. When the computer program is executed by the processor, the processor can execute the cross-section parameter acquisition method. Those skilled in the art can understand that the structure shown in the Figure 6 The structure shown in the above embodiment is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the electronic device to which the scheme of the present application is applied. Specifically, the electronic device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0195] The embodiment of the present application also discloses a computer readable storage medium, and the computer readable storage medium stores a computer program. When the computer program is executed by the processor, the cross-section parameter acquisition method in the method embodiment is implemented.

[0196] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiment methods. Any reference to memory, storage, database or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0197] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

Claims

1. A method for obtaining cross-sectional parameters, characterized in that: include: Acquire a plurality of associated manufacturing parameters of a fuel assembly, wherein the plurality of associated manufacturing parameters are parameters pre-configured for the fuel assembly, and parameter types of the plurality of associated manufacturing parameters are the same as parameter types of fuel assembly manufacturing parameters of the fuel assembly; The following processing is performed on each of the multiple fuel assembly sub-regions corresponding to the fuel assembly to obtain influence relationship information corresponding to the multiple fuel assembly sub-regions: determining a first deviation value corresponding to an associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-region; determining the influence relationship information corresponding to the fuel assembly sub-region based on the first deviation value and a reference cross-section parameter corresponding to the fuel assembly sub-region, the influence relationship information being used to characterize the influence relationship between the associated manufacturing parameter and the reference cross-section parameter, where the reference cross-section parameter is a cross-section parameter pre-configured for the fuel assembly sub-region; When determining multiple fuel assembly manufacturing parameters of the fuel assembly, the cross-sectional parameters of the fuel assembly area where the fuel assembly is located are determined based on the reference cross-sectional parameters corresponding to the multiple fuel assembly sub-areas, the influence relationship information and the multiple fuel assembly manufacturing parameters, and the fuel assembly area includes the multiple fuel assembly sub-areas.

2. The method according to claim 1, characterized in that Before performing the following processing on each of the multiple fuel assembly sub-areas corresponding to the fuel assembly to obtain the influence relationship information corresponding to the multiple fuel assembly sub-areas, the method further includes: determining first nominal design and manufacturing parameters of the fuel assembly, where the first nominal design and manufacturing parameters are theoretical parameters of the fuel assembly during the manufacturing process; The fuel assembly region is divided according to the first nominal design and manufacturing parameters to obtain the plurality of fuel assembly sub-regions.

3. The method according to claim 2, characterized in that Determining a first deviation value corresponding to an associated manufacturing parameter of the fuel assembly at a corresponding fuel assembly sub-region includes: determining second nominal design and manufacturing parameters of the fuel assembly at the fuel assembly subregion from the first nominal design and manufacturing parameters; The first deviation value is determined based on the second nominal design manufacturing parameter and the associated manufacturing parameters of the fuel assembly sub-region.

4. The method according to claim 3, characterized in that Determining the cross-sectional parameters of the fuel assembly region where the fuel assembly is located based on the reference cross-sectional parameters corresponding to the multiple fuel assembly sub-regions, the influence relationship information, and the fuel assembly manufacturing parameters includes: determining second deviation values ​​corresponding to the plurality of fuel assembly sub-regions based on the fuel assembly manufacturing parameters and the first nominal design manufacturing parameters; Determining correction values ​​corresponding to reference cross-sectional parameters of the plurality of fuel assembly sub-regions based on the influence relationship information and deviation values ​​corresponding to the plurality of fuel assembly sub-regions; The cross-sectional parameters of the fuel assembly region where the fuel assembly is located are determined based on the reference cross-sectional parameters corresponding to the multiple fuel assembly sub-regions and the correction values ​​corresponding to the reference cross-sectional parameters.

5. The method according to claim 3, characterized in that Before determining the influence relationship information corresponding to the fuel assembly sub-region based on the first deviation value and the reference cross-section parameter corresponding to the fuel assembly sub-region, the method further includes: The second nominal design and manufacturing parameters corresponding to the fuel assembly sub-region are simulated according to a preset simulation strategy to obtain reference cross-sectional parameters of the fuel assembly sub-region.

6. The method according to claim 1, characterized in that The determining of a plurality of fuel assembly manufacturing parameters of the fuel assembly comprises: Acquiring all manufacturing parameters of the fuel assembly during the manufacturing process, and a manufacturing accuracy value of each of the all manufacturing parameters; The manufacturing parameters corresponding to the manufacturing accuracy values ​​that are less than or equal to the preset accuracy threshold are used as the fuel assembly manufacturing parameters to obtain the multiple fuel assembly manufacturing parameters.

7. The method according to claim 1, characterized in that The determining of the influence relationship information of the fuel assembly sub-regions includes: According to the perturbation analysis method, the influence relationship information of the fuel assembly sub-region is determined.

8. A device for obtaining cross-sectional parameters, characterized in that: include: an acquisition module, configured to acquire a plurality of associated manufacturing parameters of a fuel assembly, wherein the plurality of associated manufacturing parameters are parameters pre-configured for the fuel assembly, and parameter types of the plurality of associated manufacturing parameters are the same as parameter types of fuel assembly manufacturing parameters of the fuel assembly; a processing module configured to perform the following processing on each of the multiple fuel assembly sub-regions corresponding to the fuel assembly to obtain influence relationship information corresponding to the multiple fuel assembly sub-regions: determining a first deviation value corresponding to an associated manufacturing parameter of the fuel assembly in the corresponding fuel assembly sub-region; and determining, based on the first deviation value and a reference cross-sectional parameter corresponding to the fuel assembly sub-region, the influence relationship information corresponding to the fuel assembly sub-region, the influence relationship information being used to characterize an influence relationship between the associated manufacturing parameter and the reference cross-sectional parameter, the reference cross-sectional parameter being a cross-sectional parameter pre-configured for the fuel assembly sub-region; A determination module is used to determine the cross-sectional parameters of the fuel assembly area where the fuel assembly is located based on the reference cross-sectional parameters corresponding to the multiple fuel assembly sub-areas, the influence relationship information and the fuel assembly manufacturing parameters, when determining multiple fuel assembly manufacturing parameters of the fuel assembly, wherein the fuel assembly area includes the multiple fuel assembly sub-areas.

9. The device according to claim 8, characterized in that The device further comprises: A partitioning module is used to determine a first nominal design and manufacturing parameter of the fuel assembly, where the first nominal design and manufacturing parameter is a theoretical parameter of the fuel assembly during the manufacturing process; and to partition the fuel assembly area according to the first nominal design and manufacturing parameter to obtain the multiple fuel assembly sub-areas.

10. The device according to claim 9, characterized in that The division module includes: A division submodule is used to determine the second nominal design and manufacturing parameters of the fuel assembly in the fuel assembly sub-area from the first nominal design and manufacturing parameters; and to determine the first deviation value based on the second nominal design and manufacturing parameters and the associated manufacturing parameters in the fuel assembly sub-area.

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