Fuel scheme determination method of heat pipe type reactor core, electronic equipment and medium

Abstract

The invention provides a fuel scheme determination method of a heat pipe type reactor core, electronic equipment and a medium, and relates to the technical field of nuclear reactors. The heat pipes and the fuel rods in the reactor core are classified, on one hand, the power relation between the fuel rods is determined according to the function condition that the heat pipes have the same heat transfer power, and on the other hand, the relation between the power of the fuel rods and fuel parameters is determined by conducting power distribution calculation on the reference reactor core. Subsequently, according to the power relation and the relation between the power of the fuel rods and the fuel parameters, the fuel parameters of all the fuel rods in the preset structure are determined, and therefore the reactor core fuel scheme is determined, and the heat transfer power of the heat pipes at different positions in the reactor core is flattened.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear reactors, and in particular to a method for determining a fuel scheme for a heat pipe reactor core, electronic equipment, and a medium. Background Art

[0002] Compared to traditional nuclear reactors, the core characteristics of heat pipe microreactors are significantly different. They transfer fuel power to heat pipes through a solid-state matrix. Similar to the coolant channels in pressurized water reactors, the heat pipes are independent of each other, eliminating the cross-flow mixing and heat transfer between coolant channels.

[0003] Currently, most heat pipe micro-reactor designs utilize fuel rods of uniform enrichment within the core. With this core design, heat pipes at the geometric center of the core or core assembly carry more heat than heat pipes at the edges, resulting in uneven heat transfer efficiency and potentially reducing the core's thermal design margin. Summary of the Invention

[0004] In view of this, the present application provides a method for determining a fuel scheme for a heat pipe reactor core, electronic equipment, and medium, which can flatten the heat transfer power of heat pipes at different positions in the core.

[0005] In a first aspect, the present application provides a method for determining a fuel scheme for a heat pipe reactor core, comprising:

[0006] Obtaining classification results of heat pipes and fuel rods in a preset structure of a reactor core, the classification results including at least one type of heat pipes and at least one type of fuel rods; wherein, if the reactor core is a modular core, the preset structure is a core assembly in the modular core; and if the reactor core is an integral core, the preset structure is an integral core;

[0007] Based on the functional condition that all types of heat pipes have the same heat transfer power, the power relationship between different types of fuel rods is determined;

[0008] Performing power distribution calculation on a reference core to determine the relationship between fuel rod power and fuel parameters, wherein the reference core has the same geometric parameters as the core, and each fuel rod in the reference core has the same fuel parameters; wherein the fuel parameters include enrichment, uranium loading, pellet density, or burnable poison content;

[0009] determining a value of the fuel parameter of each fuel rod in the preset structure according to the power relationship and the relationship between the power of the fuel rod and the fuel parameter;

[0010] The fuel scheme of the core is set according to the value of the fuel parameter of each fuel rod in the preset structure.

[0011] In one embodiment, determining the power relationship between the various types of fuel rods based on the functional condition that the various types of heat pipes have the same heat transfer power includes:

[0012] Establishing an equation function between the heat transfer power of each type of heat pipe and the power of adjacent fuel rods; wherein the equation function is determined based on the type and number of adjacent fuel rods of the corresponding type of heat pipe, and the number of heat pipes adjacent to the adjacent fuel rods of the corresponding type of heat pipe;

[0013] Based on the functional condition that each type of heat pipe has the same heat transfer power and the equation function, the power relationship between each type of fuel rod is determined.

[0014] In one embodiment, determining the power relationship between the various types of fuel rods based on the functional condition that the various types of heat pipes have the same heat transfer power and the equation function includes:

[0015] When the number of the equation functions is less than the number of the types of the fuel rods, obtaining a constraint condition for reducing the number of variables in the equation functions;

[0016] adjusting the equation function according to the constraint condition;

[0017] Based on the functional condition that all types of heat pipes have the same heat transfer power and the adjusted equation function, the power relationship between various types of fuel rods is determined.

[0018] In one embodiment, calculating the power distribution of the reference core to determine the relationship between the power of the fuel rods and the fuel parameters includes:

[0019] Calculating an average value R0 of fuel parameters of a target structure corresponding to the preset structure in the reference core;

[0020] The fuel parameters of some fuel rods in the target structure are determined as R i1 The fuel parameters of the other fuel rods are determined as R i2 , so that the average value of the fuel parameter of the target structure is still R0, where R i1 Less than R0, R i2 Greater than R0;

[0021] Calculate the fuel parameter as R i1 The power of the fuel rod And the fuel parameter is R i2 The power of the fuel rod

[0022] Normalizing the power and fuel parameters of each fuel rod in the target structure to determine the relative power and relative fuel parameter values ​​of each fuel rod;

[0023] Linear fitting is performed on the relative power of each fuel rod and the relative value of the fuel parameter to obtain the relationship between the power of the fuel rod and the fuel parameter.

[0024] In one embodiment, the relationship between the power and the fuel parameter of the fuel rod is represented by the formula r=ap+b, where a and b are constants, r is the relative value of the fuel parameter of the fuel rod, and p is the relative power of the fuel rod. Determining the value of the fuel parameter of each fuel rod in the preset structure based on the power relationship and the relationship between the power and the fuel parameter of the fuel rod includes:

[0025] Obtaining an average power P0 of the fuel rods in the preset structure;

[0026] Determining the relative power of each type of fuel rod in the preset structure based on the power relationship and the average power P0;

[0027] Using the relative power of each type of fuel rod in the preset structure as the input of p in the formula, and outputting the relative value of the fuel parameter of each type of fuel rod in the preset structure;

[0028] The value of the fuel parameter of each fuel rod in the preset structure is determined based on the product of the relative value of the fuel parameter of each type of fuel rod in the preset structure and the fuel parameter average value R0.

[0029] In one embodiment, obtaining the classification results of the heat pipes and fuel rods in the preset structure of the core includes: determining the classification results of the heat pipes and fuel rods according to position information and symmetry of the heat pipes and fuel rods in the preset structure of the core.

[0030] In one embodiment, after setting the fuel scheme of the core, the method further comprises:

[0031] Verifying the physical and thermal characteristics of the fuel scheme, wherein the physical characteristics include any one or more of the following: actual power of the fuel rods, control drum value, and control rod value; and the thermal characteristics include any one or more of the following: maximum core temperature under normal operation and heat pipe failure conditions;

[0032] If the verification fails, the fuel plan is adjusted according to the verification result.

[0033] In one embodiment, adjusting the fuel solution according to the verification result includes:

[0034] If the verification result indicates that the ratio of the heat transfer power of any heat pipe in the core to the average heat transfer power is greater than a recommended value, then updating the fuel parameters of adjacent fuel rods according to the heat transfer power adjustment rule and recalculating until the ratio of the heat transfer power of any heat pipe to the average power is less than or equal to the recommended value;

[0035] If the verification result indicates that the control drum value of the first position of the core is less than the control drum value requirement, the fuel parameters of the fuel rods at the first position are updated and recalculated according to the control drum adjustment rule until the control drum value of the first position is greater than or equal to the control drum value requirement;

[0036] If the verification result indicates that the control rod value at the second position of the core is less than the control rod value requirement, updating the fuel parameters of the fuel rod at the second position according to the control rod adjustment rule and recalculating until the control rod value at the second position is greater than or equal to the control rod value requirement;

[0037] If the verification result indicates that the temperature of the substrate or cladding at the third position of the core is higher than the temperature limit during normal operation or heat pipe failure, the fuel parameters of the adjacent fuel rods at the third position are updated and recalculated according to the thermal temperature adjustment rules until the temperature of the substrate or cladding at the third position of the core is less than or equal to the temperature limit during normal operation or heat pipe failure; wherein the first position, the second position and the third position are the same or different and are any positions in the core.

[0038] In a second aspect, the present application provides an electronic device, comprising:

[0039] at least one processor; and

[0040] At least one memory having instructions stored thereon, which, when executed individually or collectively by the at least one processor, cause the electronic device to execute the method according to the first aspect.

[0041] In a third aspect, the present application provides a computer storage medium having instructions stored thereon. When the instructions are executed individually or collectively by at least one processor of an electronic device, the electronic device executes the method described in the first aspect.

[0042] The present application provides a method for determining a fuel scheme for a heat pipe reactor core. This method categorizes the heat pipes and fuel rods in the core. Firstly, it determines the power relationship between the various fuel rod types based on the functional condition that each type of heat pipe has the same heat transfer power. Second, it determines the relationship between fuel rod power and fuel parameters by calculating the power distribution of a reference core. Subsequently, based on the power relationship and the relationship between fuel rod power and fuel parameters, it determines the fuel parameters for each fuel rod in a preset configuration, thereby completing the core fuel scheme and flattening the heat transfer power of heat pipes at different locations in the core. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present application. In the accompanying drawings:

[0044] Figure 1 This is a flow chart of a method for determining a fuel scheme for a heat pipe reactor core provided in an embodiment of the present application;

[0045] Figure 2 This is a schematic structural diagram of a component-type core provided in an embodiment of the present application;

[0046] Figure 3 This is a schematic structural diagram of an integrated core provided in an embodiment of the present application;

[0047] Figure 4 This is a schematic diagram of edge and angle classification provided in an embodiment of the present application;

[0048] Figure 5A This is a schematic diagram of a preset structure provided in an embodiment of the present application;

[0049] Figure 5B This is a schematic diagram of a preset structural classification provided in an embodiment of the present application;

[0050] Figure 6 This is a schematic diagram of another preset structural classification provided in an embodiment of the present application;

[0051] Figure 7 This is a flow chart of another method for determining a fuel scheme for a heat pipe reactor core provided in an embodiment of the present application;

[0052] Figure 8 This is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0054] As used herein, unless the context clearly indicates otherwise, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0055] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0056] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. Technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0057] In addition, although the terms used in this application are selected from commonly known and commonly used terms, some of the terms mentioned in this specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description herein. In addition, it is required that this application be understood not only by the actual terms used, but also by the meaning implied by each term.

[0058] Flowcharts are used in this application to illustrate the operations performed by devices or apparatuses according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the various steps may be processed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0059] See also Figure 1This application proposes a method for determining a fuel scheme for a heat pipe reactor core. The method can be executed by an electronic device, such as a terminal device such as a smart phone, a smart tablet, a desktop computer, a notebook computer, or a server. The method includes the following steps:

[0060] S100: Obtaining classification results of heat pipes and fuel rods in a preset structure of a core, where the classification results include at least one type of heat pipes and at least one type of fuel rods.

[0061] The core involved in the embodiment of the present application may be a component core, for example Figure 2 The modular core 200 shown includes multiple core assemblies 2001, each of which includes multiple heat pipes and multiple fuel rods. The core involved in the embodiment of the present application can also be an integrated core, for example Figure 3 The integrated core 300 shown includes multiple heat pipes and multiple fuel rods. If the core in step S100 is a modular core, the preset structure is any core assembly in the modular core. If the core in step S100 is an integrated core, the preset structure is the integrated core itself.

[0062] In some embodiments, the aforementioned method for obtaining the classification result includes method 1, i.e., manually determining the classification result, which the electronic device directly obtains. In other embodiments, the aforementioned method for obtaining the classification result includes method 2, i.e., the electronic device determines the classification result of the heat pipes and fuel rods based on their positional information and symmetry within the predetermined structure of the core.

[0063] In one embodiment, the above-mentioned second method can be implemented as follows: an XOY coordinate system is established with the geometric center of the preset structure as the origin, the heat pipe or fuel rod at the geometric center is determined as a first-type heat pipe or a first-type fuel rod, a frame is drawn from the inside out with the geometric center as the origin (the shape of the frame is the same as the shape of the preset structure), the heat pipes and fuel rods involved in the first frame are recorded as first-frame heat pipes and first-frame fuel rods, those located at the corners of the frame are determined as corner-type, and those located at the edges of the frame are determined as edge-type, for example Figure 4As shown. If the first frame involves all heat pipes or all fuel rods, the heat pipes in the first frame or the fuel rods in the first frame are classified into one category (different from the first category of heat pipes or fuel rods); if the first frame involves both heat pipes and fuel rods, then based on the position information and symmetry of the heat pipes and fuel rods, those located in symmetrical positions (X-axis symmetry or Y-axis symmetry) are classified into one category, and heat pipes or fuel rods that meet one or more of the following conditions are classified into one category: the position type (angle type, edge type) is the same, and the number and position type of adjacent components (adjacent heat pipes or adjacent fuel rods) are the same, thus completing the classification of the heat pipes in the first frame and the fuel rods in the first frame. Similarly, continue to draw frames outward to determine the type of the heat pipes and fuel rods in the second frame, until all heat pipes and fuel rods in the preset structure are classified to obtain the classification result.

[0064] For example, see Figure 5A and Figure 5B , assuming the default structure is Figure 5A As shown, an XOY coordinate system is established with the geometric center of the preset structure as the origin, and the heat pipe at the geometric center is marked as a type 2 heat pipe. A hexagonal frame with the same shape as the preset structure is drawn from the inside out with the geometric center as the origin. The first frame involves all fuel rods, so the fuel rods in the first frame ( Figure 5A The fuels 7 to 12) are all classified into one category, which is called category b. Continue to draw the second box. The second box involves 6 heat pipes ( Figure 5A Heat pipes 1 to 6) and 6 fuel rods ( Figure 5A On the one hand, heat pipe 3 and heat pipe 4 are classified into one category based on the symmetry of the Y axis, heat pipe 1 and heat pipe 2 are symmetric based on the Y axis, heat pipe 5 and heat pipe 6 are symmetric based on the Y axis, heat pipe 1 and heat pipe 5 are symmetric based on the X axis, and heat pipe 2 and heat pipe 6 are symmetric based on the X axis. Based on the principle of being classified into one category in symmetrical positions, heat pipe 1, heat pipe 2, heat pipe 5 and heat pipe 6 are classified into one category. Furthermore, considering that the position types of heat pipes 1 to heat pipe 6 are all angular, and the number and position types of adjacent fuel rods of heat pipes 1 to heat pipe 6 are the same (all adjacent to two side-shaped fuel rods), heat pipes 1 to heat pipe 6 are all classified into one category and recorded as category 1 heat pipe. On the other hand, fuel 1 and fuel 6 are classified into one category based on X-axis symmetry, fuel 2 and fuel 3 are symmetric based on Y-axis, fuel 4 and fuel 5 are symmetric based on Y-axis, fuel 2 and fuel 4 are symmetric based on X-axis, fuel 3 and fuel 5 are symmetric based on X-axis. Based on the principle of classifying fuels in symmetrical positions, fuel 2, fuel 3, fuel 4 and fuel 5 are classified into one category. Furthermore, considering that the position types of fuels 1 to 6 are all edge-type, and the number and position types of adjacent heat pipes of fuels 1 to 6 are the same (all adjacent to two angular heat pipes), the six fuel rods involved in the second frame are all classified into one category, recorded as category a. The final classification result is as follows: Figure 5B shown.

[0065] S101: Based on the functional condition that various heat pipes have the same heat transfer power, determine the power relationship between various fuel rods.

[0066] In one embodiment, the implementation of step S101 may include:

[0067] Step 1: Establish an equation function between the heat transfer power of each type of heat pipe and the power of the adjacent fuel rod, wherein the equation function is determined based on the type and number of adjacent fuel rods of the corresponding type of heat pipe and the number of heat pipes adjacent to the adjacent fuel rods of the corresponding type of heat pipe.

[0068] Step 2: Based on the functional condition and equation function that all types of heat pipes have the same heat transfer power, determine the power relationship between the various types of fuel rods.

[0069] For example, the preset structure is Figure 5B In the core assembly shown, heat pipes are classified as Category 1 or Category 2, and fuel rods are classified as Category A or Category B. For a Category 1 heat pipe, there are three fuel rods adjacent to it: two Category A fuel rods and one Category B fuel rod. Each fuel rod is adjacent to two heat pipes. Assuming the power generated by the fuel rods is evenly distributed among the adjacent heat pipes, the equation for the heat transfer power of a Category 1 heat pipe and the power of the adjacent fuel rod is:

[0070]

[0071] Among them, P1 represents the heat transfer power of type 1 heat pipe, P a Indicates the power of type A fuel rod, P b Represents the power of type B fuel rod. Similarly, for type 2 heat pipes, there are 6 type B fuel rods adjacent to each other, and each fuel rod is adjacent to 2 heat pipes. Therefore, the equation function between the heat transfer power of type 2 heat pipes and the power of adjacent fuel rods is:

[0072]

[0073] P2 represents the heat transfer power of type 2 heat pipe, which can be simplified to:

[0074]

[0075] The goal of the embodiment of the present application is to make the heat transfer power of the heat pipe as uniform as possible. Based on the function condition that all types of heat pipes have the same heat transfer power, let P1 = P2, and the power relationship between the various types of fuel rods can be obtained:

[0076]

[0077] In one embodiment, step 2 can also be implemented by: when the number of equation functions is less than the number of fuel rod types, obtaining a constraint condition for reducing the number of variables in the equation function, adjusting the equation function in accordance with the constraint condition, and subsequently determining the power relationship between the different types of fuel rods based on the function condition that each type of heat pipe has the same heat transfer power and the adjusted equation function. Conversely, when the number of equation functions is not less than the number of fuel rod types, no constraint condition is introduced, and the power relationship between the different types of fuel rods is determined directly based on step 2.

[0078] For example, the preset structure is Figure 6 In the core assembly shown, heat pipes are categorized into four types: 1, 2, 3, and 4, and fuel rods are categorized into eight types: a, b, c, d, e, f, g, and h. For a type 1 heat pipe, there are four fuel rods adjacent to it: one each of types a, c, d, and e. Type a fuel rod is adjacent only to a type 1 heat pipe, while the remaining fuel rods are adjacent to two heat pipes. Assuming the power generated by the fuel rods is evenly distributed among the adjacent heat pipes, the equation for the heat transfer power of a type 1 heat pipe and the power of the adjacent fuel rods is:

[0079]

[0080] Similarly, the equation function between the heat transfer power of type 2, type 3, and type 4 heat pipes and the power of the adjacent fuel rods is:

[0081]

[0082] Among them, P1, P2, P3, and P4 represent the heat transfer power of type 1 to type 4 heat pipes respectively, and P a 、P b 、P c 、P d 、P e 、P f , Pg, P h Respectively represent the heat transfer power of eight types of fuel rods: a, b, c, d, e, f, g, and h.

[0083] Furthermore, the electronic device detects that the number of equation functions (4) is less than the number of fuel rod categories (8), and the 4 relations cannot be used to obtain 8 variables (P a 、P b 、P c 、P d 、P e 、P f , Pg and P h), so it is necessary to introduce additional constraints, which can be artificially introduced by the user through electronic devices to reduce the number of variables in the equation function. For example, too many types of fuel rod enrichment in the core assembly are not conducive to the manufacture and assembly of the fuel rods. In order to reduce the number of fuel rod enrichment types in the core assembly, Figure 6 The enrichment of the outermost a and b fuel rods is equal, the enrichment of the second outermost c, e, and g fuel rods is equal, and the enrichment of the inner and center f and h fuel rods is equal. Assuming that the fuel rod power is mainly affected by the enrichment, the introduced constraints can be:

[0084] P a =P b

[0085] P c =P g =P e

[0086] P f =P h

[0087] Substituting the equation functions corresponding to P1 to P4 above, we can obtain:

[0088]

[0089] P2=P a ×2+P c +P f

[0090]

[0091] The relationship between the power of the four types of fuel rods a, c, d, and f is the same as the above Figure 5B The principle of deriving the power relationship between different types of fuel rods in the core assembly shown is the same. Continuing with the function condition that different types of heat pipes have the same heat transfer power, let P1 = P2, P1 = P3 and P1 = P4, and the unique power relationship between the four types of fuel rods a, c, d, and f can be determined.

[0092] S102: Calculate the power distribution of the reference core to determine the relationship between fuel rod power and fuel parameters. The reference core has the same geometric parameters as the core, and each fuel rod in the reference core has the same fuel parameters. The geometric parameters include the number of fuel rods, the number of heat pipes, the size of the core assembly, the number of core assemblies, the core size, and the spacing between fuel rods or heat pipes.

[0093] The aforementioned fuel parameters include enrichment, uranium loading, pellet density, or burnable poison content, which can affect fuel rod power. Fuel rod enrichment generally refers to the proportion of uranium-235 in the nuclear fuel. A higher enrichment means more uranium-235, which increases the rate of the fission reaction and releases more heat. Fuel rod uranium loading refers to the mass of uranium in the fuel rod pellets, and fuel rod pellet density refers to the density of the fuel rod pellets during sintering. Burnable poison can be used as a coating on the inner wall of the fuel rod's fuel cladding. The burnable poison content mentioned above refers to the amount of burnable poison in this coating.

[0094] In one embodiment, the power distribution calculation is performed on the reference core to determine the relationship between the power and fuel parameters of the fuel rods. The method may be as follows: the average fuel parameter R0 (such as the average enrichment, average uranium loading, average pellet density, average burnable poison content, etc.) of the target structure corresponding to the preset structure in the reference core is calculated, and the fuel parameters (such as the enrichment, average uranium loading, average pellet density, burnable poison content, etc.) of some fuel rods in the target structure are determined as R i1 (R i1＜ R0), the fuel parameters of the other fuel rods are determined to be R i2 (R i2＞ R0), so that the average value of the fuel parameters of the target structure is still R0.

[0095] Further, the fuel parameter is calculated as R i1 The power of the fuel rod And the fuel parameter is R i2 The power of the fuel rod The power and fuel parameters of each fuel rod in the target structure are normalized to determine the relative power and fuel parameter values ​​of each fuel rod. Subsequently, a linear fit is performed on the relative power and fuel parameter values ​​of each fuel rod to obtain the relationship between the power and fuel parameters of the fuel rod. This relationship can be expressed as the following formula:

[0096] r=ap+ba, b is a constant, r is the relative value of the fuel parameter of the fuel rod, and p is the relative power of the fuel rod.

[0097] As a feasible approach, the power of each fuel rod in the target structure can be normalized according to the following formula:

[0098]

[0099] p i is the relative power of the i-th fuel rod, P fi is the power of the i-th fuel rod, N is the total number of fuel rods in the target structure, P tot is the total power of all fuel rods in the target structure.

[0100] The fuel parameters of each fuel rod in the target structure can be normalized according to the following formula:

[0101]

[0102] r j is the relative value of the fuel parameter of the jth fuel rod, R j is the fuel parameter of the j-th fuel rod.

[0103] For example, see Figure 2 , assuming that the core in step S100 is Figure 2 The modular core 200 shown has a preset structure in which one of the core assemblies 2001 is located, and the fuel parameter is enrichment as an example. The electronic equipment can construct a reference core in which all fuel rods have the same enrichment, and the core size, number of core assemblies, core assembly size, number of fuel rods in each core assembly, number of heat pipes, fuel rod spacing, heat pipe spacing and other geometric parameters are the same as those of the modular core 200. In the reference core, a target assembly to be optimized is selected, and the geometric parameters of the target assembly are exactly the same as those of the core assembly 2001 (including 12 fuel rods, assumed to be recorded as fuel rods 1 to 12 respectively), and the position in the reference core is the same as the position of the core assembly 2001 in the modular core 200. First, the reference core is preliminarily optimized, and the preliminary optimization process is as follows: obtain the average enrichment R0 of the target assembly, take the enrichment of a part of the fuel rods in the target assembly as R i1 (R i1 <R0), the enrichment of the other part of the fuel rod is R i2 (R i2＞ R0), and the average enrichment of the entire target component is still R0, assuming that the preliminary optimization results are shown in Table 1.

[0104] Table 1

[0105] serial number enrichment Fuel rods 1-6 <![CDATA[R1 to R6 (all less than R0)]]> Fuel rods 7-12 <![CDATA[R7 to R12 (all greater than R0)]]>

[0106] Furthermore, physical calculations were performed on the reference core after preliminary optimization, and the fuel parameters were obtained as R i1 The power of the fuel rod And the fuel parameter is R i2 The power of the fuel rod Assuming the power of fuel rods 1-12 is P1-P12, respectively, the relative power of fuel rods 1-12 is obtained by dividing P1-P12 by the average power of the fuel rods in the target assembly. Furthermore, the relative enrichments (r1-r12) of fuel rods 1-12 are obtained by dividing the relative enrichments (R1-R12) by the average enrichment (R0) of the target assembly. Subsequently, a linear fit is performed based on the relative enrichments and relative power of fuel rods 1-12, yielding the relationship between the fuel rod power and fuel parameters: r = ap + b.

[0107] S103: Determine the value of the fuel parameter of each fuel rod in the preset structure according to the above power relationship and the relationship between the power of the fuel rod and the fuel parameter.

[0108] In one feasible embodiment, the relationship between fuel rod power and fuel parameters is represented by the aforementioned formula r = ap + b. Step S103 includes obtaining the average power P0 of the fuel rods in the preset configuration, and determining the relative power of each type of fuel rod in the preset configuration based on the aforementioned power relationship and the average power P0. Furthermore, the relative power of each type of fuel rod in the preset configuration is used as input p in the formula, and the relative fuel parameter values ​​of each type of fuel rod in the preset configuration are output. The fuel parameter value of each fuel rod in the preset configuration is determined based on the product of the relative fuel parameter values ​​of each type of fuel rod in the preset configuration and the average fuel parameter value R0.

[0109] For example, the preset structure is still used Figure 5B Take the core assembly shown in the figure as an example. The heat pipes are divided into categories 1 and 2, and the fuel rods are divided into categories a and b. The power relationship between the fuel rods of each category in the core assembly is P a =5 / 2P b , P a Indicates the power of type A fuel rod, P b The power of type b fuel rods is represented by the relationship between the power of fuel rods and fuel parameters, r = ap + b. The average power of the fuel rods in the core assembly is P0, p a and p b are the ratios of the power of type A and type B fuel rods to the average power P0, that is, the relative power of type A and type B fuel rods, then:

[0110]

[0111] P a =p a *P0

[0112] P b =p b *P0

[0113] 6P a +6P b =12P0

[0114] Simplifying, we get:

[0115]

[0116] So we can find p a and p b Specific values ​​of (i.e., relative power of various fuel rods in the preset structure). Further, p a and p b Substituting the value of into the position of p in r=ap+b, the corresponding relative value r of the fuel parameter (such as relative enrichment) can be obtained. Then, the relative value r of the fuel parameter of each fuel rod is multiplied by the average value R0 of the fuel parameter to determine the value of the fuel parameter of each fuel rod in the core assembly.

[0117] S104: Setting the fuel scheme of the core according to the fuel parameter values ​​of each fuel rod in the preset structure.

[0118] In one embodiment, if the core is a modular core, the preset structure is a core assembly in the modular core. After the calculation results (i.e., the fuel parameters of each fuel rod in a core assembly) are obtained through steps S100 to S103, the fuel scheme of the entire core is set as follows: the fuel parameters of the fuel rods in all core assemblies in the core are set the same with reference to the calculation results.

[0119] Alternatively, if the core is an integrated core, after the calculation results (i.e., the fuel parameters of each fuel rod in the entire core) are obtained through steps S100 to S103, the fuel scheme for the entire core is set as follows: the fuel parameters of all fuel rods in the core are set identically with reference to the calculation results.

[0120] In the embodiments of this application, based on the typical core and fuel composition of heat pipe reactors, the core characteristics of the reactor are thoroughly analyzed, and the heat pipes and fuel rods in the core are classified. The power relationships between the various fuel rod types are determined based on the functional condition that each type of heat pipe has the same heat transfer power. Furthermore, the relationship between fuel rod power and fuel parameters is determined by calculating the power distribution of a reference core. Subsequently, based on the power relationships and the relationship between fuel rod power and fuel parameters, the fuel parameters of each fuel rod in a preset configuration are determined, thereby determining the core fuel plan, effectively achieving uniform distribution of heat pipe heat transfer power.

[0121] See also Figure 7 ,exist Figure 1 Based on the method shown in the figure, the present application proposes another method for determining the fuel scheme of a heat pipe reactor core. In addition to the method including Figure 1 In addition to steps S100 to S104, the method further includes the following steps:

[0122] S105: Verify the physical and thermal properties of the fuel solution.

[0123] Among them, the physical characteristics include any one or more of the following: actual power of the fuel rods, control drum value and control rod value; the thermal characteristics include any one or more of the following: maximum core temperature under normal operation and heat pipe failure conditions.

[0124] S106: If the verification fails, the fuel plan is adjusted according to the verification result.

[0125] In the embodiment of the present application, if any one of the physical properties and the thermal properties fails to pass the verification, the final verification result will also fail, and the fuel plan needs to be continuously adjusted based on the verification result until the fuel plan passes the verification.

[0126] In one embodiment, if the verification result indicates that the ratio of the heat transfer power of any heat pipe in the core to the average heat transfer power is greater than the recommended value, the fuel parameters of the adjacent fuel rods are updated and recalculated according to the heat transfer power adjustment rules until the ratio of the heat transfer power of any heat pipe to the average power is less than or equal to the recommended value.

[0127] For example, assuming the fuel parameter is enrichment, the core is an integrated core, and its core structure is as follows: Figure 5A As shown in the figure, the recommended value is set to 0.98~1.02. If the verification result indicates that the ratio of the heat transfer power of heat pipe 1 to the average heat transfer power is 1.5, which exceeds the recommended value, the adjacent fuel rods of heat pipe 1 can be adjusted according to the heat transfer power adjustment rules (such as Figure 5A The enrichment of fuel 1, fuel 2 and fuel 7 (marked in the figure) is reduced by 0.5% each time and recalculated until the ratio of the heat transfer power to the average power of the heat pipe 1 is less than or equal to the recommended value.

[0128] In another embodiment, if the verification result indicates that the control drum value at the first position of the core is less than the control drum value requirement value, the fuel parameters of the fuel rod at the first position are updated and recalculated according to the control drum adjustment rules until the control drum value at the first position is greater than or equal to the control drum value requirement value.

[0129] For example, assuming the fuel parameter is enrichment, the core is an integrated core, and its core structure is as follows: Figure 5A As shown, the first position is the core periphery. If the verification result indicates that the control drum value of the core periphery is lower than the limit, then according to the control drum adjustment rules, the outermost fuel rods of the core are appropriately increased (such as Figure 5A The enrichment of fuels 1 to 6 (marked in the figure) is increased by 0.5% each time and recalculated until the control drum value at the core periphery is greater than or equal to the control drum value requirement.

[0130] In another embodiment, if the verification result indicates that the control rod value at the second position of the core is less than the control rod value requirement value, the fuel parameters of the fuel rod at the second position are updated and recalculated according to the control rod adjustment rules until the control rod value at the second position is greater than or equal to the control rod value requirement value.

[0131] For example, assuming the fuel parameter is enrichment, the core is an integrated core, and its core structure is as follows: Figure 5A As shown, the second position is the center of the core. If the verification result indicates that the control rod value of the core center is less than the control rod value requirement, then according to the control rod adjustment rule, the fuel rods around the core center are appropriately increased (such as Figure 5A The enrichment of fuel 7 to fuel 12 (marked in the figure) is increased by 0.5% each time and recalculated until the control rod value in the center of the core is greater than or equal to the control rod value requirement.

[0132] In another embodiment, if the verification result indicates that the temperature of the substrate or cladding at the third position of the core is higher than the temperature limit during normal operation or heat pipe failure, the fuel parameters of the adjacent fuel rods at the third position are updated and recalculated according to the thermal temperature adjustment rules until the temperature of the substrate or cladding at the third position of the core is less than or equal to the temperature limit during normal operation or heat pipe failure.

[0133] For example, assuming the fuel parameter is enrichment, the core is an integrated core, and its core structure is as follows: Figure 5A As shown, the third position is Figure 5A If the verification result indicates that the temperature of the substrate at the third position of the core is higher than the temperature limit during normal operation, the fuel rods near the third position (such as Figure 5A The enrichment of the fuel 1) marked in the figure is increased by 0.5% each time and recalculated until the temperature of the matrix at the third position of the core is less than or equal to the temperature limit during normal operation.

[0134] Among them, the above-mentioned first position, second position and third position are the same or different, and are all arbitrary positions in the core. The above-mentioned heat transfer power adjustment rules, control drum adjustment rules, control rod adjustment rules and thermal temperature adjustment rules, the above-mentioned recommended values, control drum value requirement values, control rod value requirement values, and temperature limit values ​​corresponding to specific values ​​are all pre-set according to experimental data, and can be adjusted subsequently according to actual needs. The embodiments of the present application do not make specific limitations on this.

[0135] In an embodiment of the present application, the physical and thermal properties of the fuel scheme of the core can be verified to verify whether the heat pipe heat transfer power distribution of the scheme is as expected and whether the core characteristics and thermal characteristics meet the design requirements. If the verification fails, the fuel scheme is continuously adjusted based on the verification results to ensure that the heat pipe heat transfer power distribution and core heat transfer characteristics of the fuel scheme meet the requirements.

[0136] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device can operate Figure 1 and Figure 7 The method for determining the fuel scheme of the heat pipe reactor core is as follows: Figure 8 As shown, the electronic device includes an internal communication bus 801, a processor 802, a read-only memory (ROM) 803, a random access memory (RAM) 804, and a communication port 805. When used on a personal computer, the electronic device may also include a hard disk 806. The internal communication bus 801 can implement data communication between the components of the electronic device. The processor 802 can make judgments and issue prompts. In some embodiments, the processor 802 can be composed of one or more processors. The communication port 805 can implement data communication between the electronic device and the outside world. In some embodiments, the electronic device can send and receive information and data from a network via the communication port 805. The electronic device may also include program storage units and data storage units in various forms, such as a hard disk 806, a read-only memory (ROM) 803, and a random access memory (RAM) 804, which can store various data files used for computer processing and / or communication, as well as possible program instructions executed by the processor 802. The processor 802 executes these instructions to implement the main part of the method. The results of the processing by the processor 802 are transmitted to the electronic device via the communication port 805 and displayed on the user interface.

[0137] Processor 802 may be of any type suitable for the local technology network and may include, by way of non-limiting example, one or more of a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. An electronic device may have multiple processors, such as application specific integrated circuit chips, which are slaved in time to a clock that synchronizes the master processor.

[0138] The processor 802 can be used to perform the following steps: obtaining classification results of heat pipes and fuel rods in a preset structure of the core, the classification results including at least one type of heat pipes and at least one type of fuel rods; wherein, if the core is a component core, the preset structure is a core component in the component core, and if the core is an integral core, the preset structure is an integral core; determining a power relationship between different types of fuel rods based on the functional condition that different types of heat pipes have the same heat transfer power; performing power distribution calculation on a reference core to determine a relationship between power and fuel parameters of the fuel rods, wherein the geometric parameters of the reference core are the same as those of the core, and the fuel parameters of each fuel rod in the reference core are the same; wherein the fuel parameters include enrichment, uranium loading, pellet density, or burnable poison content; determining a value of a fuel parameter of each fuel rod in the preset structure based on the power relationship and the relationship between the power and fuel parameters of the fuel rods; and setting a fuel scheme for the core according to the value of the fuel parameter of each fuel rod in the preset structure.

[0139] In one embodiment, the processor 802 is specifically configured to establish an equation function between the heat transfer power of each type of heat pipe and the power of adjacent fuel rods; wherein the equation function is determined based on the type and number of adjacent fuel rods of the corresponding type of heat pipe, and the number of heat pipes adjacent to the adjacent fuel rods of the corresponding type of heat pipe; and based on the functional condition that each type of heat pipe has the same heat transfer power and the equation function, the power relationship between the different types of fuel rods is determined.

[0140] In one embodiment, the processor 802 is further specifically configured to, when the number of the equation functions is less than the number of types of the fuel rods, obtain a constraint condition for reducing the number of variables in the equation function; adjust the equation function according to the constraint condition; and determine the power relationship between the different types of fuel rods based on the function condition that the different types of heat pipes have the same heat transfer power and the adjusted equation function.

[0141] In one embodiment, the processor 802 is further configured to calculate an average fuel parameter R0 of a target structure in the reference core corresponding to the preset structure; and determine the fuel parameters of some fuel rods in the target structure as R i1 The fuel parameters of the other fuel rods are determined as R i2 , so that the average value of the fuel parameter of the target structure is still R0, where R i1 Less than R0, R i2 Greater than R0; calculate the fuel parameter as R i1 The power of the fuel rod And the fuel parameter is R i2 The power of the fuel rod Normalizing the power and fuel parameters of each fuel rod in the target structure to determine the relative power and relative fuel parameter values ​​of each fuel rod; and performing linear fitting on the relative power and relative fuel parameter values ​​of each fuel rod to obtain a relationship between the power and fuel parameters of the fuel rod.

[0142] In one embodiment, the relationship between the power and the fuel parameter of the fuel rod is represented by the formula r=ap+b, where a and b are constants, r is the relative value of the fuel parameter of the fuel rod, and p is the relative power of the fuel rod. The processor 802 is further specifically configured to obtain an average power P0 of the fuel rods in the preset structure; determine the relative power of each type of fuel rod in the preset structure based on the power relationship and the average power P0; use the relative power of each type of fuel rod in the preset structure as input for p in the formula to output the relative value of the fuel parameter of each type of fuel rod in the preset structure; and determine the value of the fuel parameter of each fuel rod in the preset structure based on the product of the relative value of the fuel parameter of each type of fuel rod in the preset structure and the average value R0 of the fuel parameter.

[0143] In one embodiment, the processor 802 is further configured to determine the classification results of the heat pipes and fuel rods according to the position information and symmetry of the heat pipes and fuel rods in the preset structure of the core.

[0144] In one embodiment, after setting the fuel scheme of the core, the processor 802 is further used to verify the physical properties and thermal properties of the fuel scheme, the physical properties including any one or more of the following: actual power of the fuel rod, control drum value and control rod value; the thermal properties including any one or more of the following: maximum core temperature under normal operation and heat pipe failure conditions; if the verification fails, the fuel scheme is adjusted according to the verification result.

[0145] In one embodiment, the processor 802 is further specifically configured to update the fuel parameters of adjacent fuel rods according to the heat transfer power adjustment rules and recalculate if the verification result indicates that the ratio of the heat transfer power of any heat pipe in the core to the average heat transfer power is greater than the recommended value, until the ratio of the heat transfer power of any heat pipe to the average power is less than or equal to the recommended value; if the verification result indicates that the control drum value of the first position of the core is less than the control drum value requirement value, then update the fuel parameters of the fuel rods at the first position according to the control drum adjustment rules and recalculate until the control drum value of the first position is greater than or equal to the control drum value requirement value; if the verification result indicates that the control drum value of the second position of the core is less than the control drum value requirement value If the control rod value at the third position is less than the control rod value requirement value, the fuel parameters of the fuel rod at the second position are updated and recalculated according to the control rod adjustment rules until the control rod value at the second position is greater than or equal to the control rod value requirement value; if the verification result indicates that the temperature of the substrate or cladding at the third position of the core is higher than the temperature limit during normal operation or heat pipe failure, the fuel parameters of the adjacent fuel rods at the third position are updated and recalculated according to the thermal temperature adjustment rules until the temperature of the substrate or cladding at the third position of the core is less than or equal to the temperature limit during normal operation or heat pipe failure; wherein, the first position, the second position and the third position are the same or different and are any positions in the core.

[0146] The above-mentioned method for determining the fuel scheme of the heat pipe reactor core can be implemented as a computer program, stored in the hard disk 806, and loaded into the processor 802 for execution to implement the method for determining the fuel scheme of the heat pipe reactor core of the present application.

[0147] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of any of the aforementioned methods for determining a fuel scheme for a heat pipe reactor core are implemented.

[0148] Among them, the specific implementation methods and technical effects of the electronic device and computer-readable storage medium can be referred to the embodiment of the fuel scheme determination method for the heat pipe reactor core provided by the present invention, and will not be repeated here.

[0149] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. A skilled person may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present invention.

[0150] The various illustrative logic modules and circuits described in conjunction with the embodiments disclosed herein may be implemented or executed using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0151] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read and write information from / to the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and storage medium may reside in a user terminal as discrete components.

[0152] In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, including any media that facilitates the transfer of a computer program from one location to another. A storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks typically reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0153] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A method for determining a fuel scheme for a heat pipe reactor core, characterized in that: The method comprises: Obtaining classification results of heat pipes and fuel rods in a preset structure of a reactor core, the classification results including at least one type of heat pipes and at least one type of fuel rods; wherein, if the reactor core is a modular core, the preset structure is a core assembly in the modular core; and if the reactor core is an integral core, the preset structure is an integral core; Based on the functional condition that all types of heat pipes have the same heat transfer power, the power relationship between different types of fuel rods is determined; Performing power distribution calculation on a reference core to determine the relationship between fuel rod power and fuel parameters, wherein the reference core has the same geometric parameters as the core, and each fuel rod in the reference core has the same fuel parameters; wherein the fuel parameters include enrichment, uranium loading, pellet density, or burnable poison content; determining a value of the fuel parameter of each fuel rod in the preset structure according to the power relationship and the relationship between the power of the fuel rod and the fuel parameter; The fuel scheme of the core is set according to the value of the fuel parameter of each fuel rod in the preset structure.

2. The method according to claim 1, wherein The power relationship between the various fuel rods is determined based on the functional condition that the various heat pipes have the same heat transfer power, including: Establishing an equation function between the heat transfer power of each type of heat pipe and the power of adjacent fuel rods; wherein the equation function is determined based on the type and number of adjacent fuel rods of the corresponding type of heat pipe, and the number of heat pipes adjacent to the adjacent fuel rods of the corresponding type of heat pipe; Based on the functional condition that various types of heat pipes have the same heat transfer power and the equation function, the power relationship between various types of fuel rods is determined.

3. The method according to claim 2, wherein: The determining of the power relationship between the various types of fuel rods based on the functional condition that the various types of heat pipes have the same heat transfer power and the equation function includes: When the number of the equation functions is less than the number of the types of the fuel rods, obtaining a constraint condition for reducing the number of variables in the equation functions; adjusting the equation function according to the constraint condition; Based on the functional condition that all types of heat pipes have the same heat transfer power and the adjusted equation function, the power relationship between various types of fuel rods is determined.

4. The method according to claim 1, wherein Calculating the power distribution of the reference core to determine the relationship between the power of the fuel rods and the fuel parameters includes: Calculating an average fuel parameter R0 of a target structure corresponding to the preset structure in the reference core; The fuel parameters of some fuel rods in the target structure are determined as R i1 The fuel parameters of the other fuel rods are determined as R i2 , so that the average value of the fuel parameter of the target structure is still R0, where R i1 Less than R0, R i2 Greater than R0; Calculate the fuel parameter as R i1 The power of the fuel rod And the fuel parameter is R i2 The power of the fuel rod Normalizing the power and fuel parameters of each fuel rod in the target structure to determine the relative power and relative fuel parameter values ​​of each fuel rod; Linear fitting is performed on the relative power of each fuel rod and the relative value of the fuel parameter to obtain the relationship between the power of the fuel rod and the fuel parameter.

5. The method according to claim 4, wherein The relationship between the power and the fuel parameter of the fuel rod is represented by the formula r=ap+b, where a and b are constants, r is the relative value of the fuel parameter of the fuel rod, and p is the relative power of the fuel rod. Determining the value of the fuel parameter of each fuel rod in the preset structure based on the power relationship and the relationship between the power and the fuel parameter of the fuel rod includes: Obtaining an average power P0 of the fuel rods in the preset structure; Determining the relative power of each type of fuel rod in the preset structure based on the power relationship and the average power P0; Using the relative power of each type of fuel rod in the preset structure as the input of p in the formula, and outputting the relative value of the fuel parameter of each type of fuel rod in the preset structure; The value of the fuel parameter of each fuel rod in the preset structure is determined based on the product of the relative value of the fuel parameter of each type of fuel rod in the preset structure and the fuel parameter average value R0.

6. The method according to any one of claims 1 to 5, wherein: The obtaining of the classification results of the heat pipes and fuel rods in the preset structure of the core includes: The classification results of the heat pipes and fuel rods are determined according to the position information and symmetry of the heat pipes and fuel rods in the preset structure of the core.

7. The method according to any one of claims 1 to 5, characterized in that After setting the fuel scheme of the core, the method further includes: Verifying the physical and thermal characteristics of the fuel scheme, wherein the physical characteristics include any one or more of the following: actual power of the fuel rods, control drum value, and control rod value; and the thermal characteristics include any one or more of the following: maximum core temperature under normal operation and heat pipe failure conditions; If the verification fails, the fuel plan is adjusted according to the verification result.

8. The method according to claim 7, wherein The adjusting the fuel scheme according to the verification result includes: If the verification result indicates that the ratio of the heat transfer power of any heat pipe in the core to the average heat transfer power is greater than a recommended value, then updating the fuel parameters of adjacent fuel rods according to the heat transfer power adjustment rule and recalculating until the ratio of the heat transfer power of any heat pipe to the average power is less than or equal to the recommended value; If the verification result indicates that the control drum value of the first position of the core is less than the control drum value requirement, the fuel parameters of the fuel rods at the first position are updated and recalculated according to the control drum adjustment rule until the control drum value of the first position is greater than or equal to the control drum value requirement; If the verification result indicates that the control rod value at the second position of the core is less than the control rod value requirement, updating the fuel parameters of the fuel rod at the second position according to the control rod adjustment rule and recalculating until the control rod value at the second position is greater than or equal to the control rod value requirement; If the verification result indicates that the temperature of the substrate or cladding at the third position of the core is higher than the temperature limit during normal operation or heat pipe failure, the fuel parameters of the adjacent fuel rods at the third position are updated and recalculated according to the thermal temperature adjustment rules until the temperature of the substrate or cladding at the third position of the core is less than or equal to the temperature limit during normal operation or heat pipe failure; wherein the first position, the second position and the third position are the same or different and are any positions in the core.

9. An electronic device, characterized in that: include: at least one processor; as well as At least one memory having instructions stored thereon, wherein when the instructions are executed individually or collectively by the at least one processor, the electronic device executes the method according to any one of claims 1 to 8.

10. A computer storage medium, characterized in that The computer storage medium stores instructions, which, when executed individually or collectively by at least one processor of an electronic device, enable the electronic device to perform the method according to any one of claims 1 to 8.

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