Method and device for determining deposition rate of corrosion product in reactor coolant

Abstract

The invention relates to a method and device for determining the deposition rate of corrosion products in a reactor coolant. The method comprises the following steps: acquiring the particulate matter concentration of a structural material corrosion product in a liquid metal coolant; determining the deposition rate of the particulate matters in the corrosion product according to the particulate matter concentration and the stopping distance of the corrosion product; the stop distance is used to characterize the distance at which the corrosion product particles move to deposit with the coolant. By the adoption of the method, the stopping distance of the corrosion product can be considered when the deposition rate of the particulate matter is determined, and compared with a deposition rate determining mode that the corrosion product is assumed to be completely deposited at the release position of the structural material and the deposition lag condition is ignored in the related technology, the deposition rate can be determined more accurately. In addition, the deposition rate of the corrosion product particulate matter in the liquid metal coolant is determined in a one-dimensional solution mode, the deposition rate of the particulate matter in the corrosion product can be determined more efficiently, and the method is more suitable for engineering practical application.

Description

Technical Field

[0001] The present application relates to the technical field of liquid metal reactors, and in particular to a method and device for determining the deposition rate of corrosion products in a reactor coolant. Background Art

[0002] With the development of liquid metal reactors, liquid metal can be used as the preferred coolant in nuclear energy systems. However, structural materials (such as stainless steel) that are in direct contact with liquid metal will corrode. As a result, the corrosion products released by the above structural materials will flow with the circulation of the coolant and eventually deposit in the low-temperature area of ​​the pipeline, which may cause problems such as blockage of the coolant channel. At the same time, the activated corrosion products formed by the corrosion products flowing through the core after being activated by neutrons are also the main source of the primary loop extra-core radioactive dose. Therefore, how to accurately determine the deposition rate of corrosion products in liquid metal is crucial for the risk assessment of liquid metal reactor blockage.

[0003] However, the method of determining the deposition rate of corrosion products in liquid metal in the related art has the problem of inaccuracy. Summary of the invention

[0004] Based on this, it is necessary to provide a method and device for determining the deposition rate of corrosion products in a reactor coolant, which can accurately determine the deposition rate of corrosion products in liquid metal, in order to address the above technical problems.

[0005] In a first aspect, the present application provides a method for determining a corrosion product deposition rate in a reactor coolant, wherein the coolant is a liquid metal coolant, comprising:

[0006] Obtaining the particle concentration of structural material corrosion products in the liquid metal coolant;

[0007] The deposition rate of the particles in the corrosion products is determined according to the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move along with the coolant to the deposition.

[0008] In one embodiment, obtaining the particle concentration of the corrosion product of the structural material in the liquid metal coolant includes:

[0009] Determining the release rate of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures;

[0010] Obtaining the equilibrium concentration of each of the metal elements;

[0011] The particle concentration of the structural material corrosion product in the liquid metal coolant is determined according to the release rate of each of the metal elements and the equilibrium concentration of each of the metal elements.

[0012] In one embodiment, determining the release rate of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures includes:

[0013] According to the corrosion release test of the structural material at different temperatures, the corrosion rate of the structural material and the mass proportion of each metal element in the structural material are obtained;

[0014] The release rate of each metal element in the structural material is determined according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material.

[0015] In one embodiment, obtaining the equilibrium concentration of each of the metal elements includes:

[0016] Obtaining an expression for the product of a preset dissolved oxygen concentration and the solubility of the oxide corresponding to each of the metal elements;

[0017] The dissolved oxygen concentration is substituted into the expression of the solubility product of each of the oxides for calculation to obtain the equilibrium concentration of each of the metal elements.

[0018] In one embodiment, determining the particle concentration of the structural material corrosion product in the liquid metal coolant according to the release rate of each of the metal elements and the equilibrium concentration of each of the metal elements comprises:

[0019] Determining the release mass of each of the metal elements according to the release rate of each of the metal elements;

[0020] The particle concentration of the structural material corrosion product in the liquid metal coolant is determined according to the released mass of each of the metal elements and the equilibrium concentration of each of the metal elements.

[0021] In one embodiment, determining the deposition rate of the particles in the corrosion product according to the particle concentration and the stopping distance of the corrosion product includes:

[0022] determining a particle deposition coefficient according to the stopping distance of the corrosion product and the dimension information of the liquid metal coolant channel;

[0023] The deposition rate of the particles in the corrosion product is determined according to the particle concentration, the particle deposition coefficient and the size information of the liquid metal coolant channel.

[0024] In a second aspect, the present application also provides a device for determining the deposition rate of corrosion products in a reactor coolant, wherein the coolant is a liquid metal coolant, comprising:

[0025] An acquisition module, used for acquiring the particle concentration of structural material corrosion products in the liquid metal coolant;

[0026] The determination module is used to determine the deposition rate of the particles in the corrosion products according to the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move with the coolant to the deposition.

[0027] In a third aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the method in any one of the embodiments of the first aspect are implemented.

[0028] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method in any one of the embodiments of the first aspect are implemented.

[0029] In a fifth aspect, the present application further provides a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the method in any one of the embodiments of the first aspect are implemented.

[0030] The above-mentioned method and device for determining the deposition rate of corrosion products in the reactor coolant obtain the particle concentration of the corrosion products of the structural material in the liquid metal coolant; determine the deposition rate of the particles in the corrosion products according to the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move with the coolant to deposit. The embodiment of the present application takes into account the stopping distance of the corrosion products when determining the deposition rate of the particles. Compared with the deposition rate determination method in the related art that assumes that the corrosion products are completely deposited at the position where the structural material is released and ignores the deposition lag, the embodiment of the present application can determine the deposition rate more accurately. In addition, the embodiment of the present application can obtain the particle concentration of the corrosion products of the structural material in the liquid metal coolant through a one-dimensional solution method, and determine the deposition rate of the particles in the corrosion products according to the particle concentration and the stopping distance of the corrosion products. Compared with the method of obtaining the deposition rate through three-dimensional calculation in the related art, the deposition rate of the particles in the corrosion products can be determined more efficiently and is more suitable for engineering practice applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is an application environment diagram of a method for determining a corrosion product deposition rate in a reactor coolant in one embodiment;

[0033] Figure 2 is a schematic flow chart of a method for determining a corrosion product deposition rate in a reactor coolant in one embodiment;

[0034] Figure 3 A schematic diagram of a process for determining a particle concentration in one embodiment;

[0035] Figure 4 A schematic flow chart of a step of determining equilibrium concentration in one embodiment;

[0036] Figure 5 is a schematic flow chart of a method for determining a corrosion product deposition rate in a reactor coolant in another embodiment;

[0037] Figure 6 The present invention is a structural block diagram of a device for determining the deposition rate of corrosion products in a reactor coolant in one embodiment. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] With the development of liquid metal reactors, liquid metal can be used as the preferred coolant in nuclear energy systems. However, structural materials in direct contact with liquid metal (such as stainless steel, whose main components are Fe, Ni, Cr and other elements) corrode. Therefore, in a high-temperature liquid metal environment, the corrosion products released by the above structural materials will flow with the circulation of the coolant, and eventually accumulate locally in the low-temperature area of ​​the loop or even deposit in the low-temperature area of ​​the pipeline, which may cause blockage of the coolant channel and affect the heat transfer effect. At the same time, the activated corrosion products formed by the corrosion products flowing through the core after being activated by neutrons are also the main source of the primary loop external radioactive dose, that is, the corrosion products will be activated by neutrons as the coolant flows through the core, and eventually deposited inside the liquid metal coolant channel and become one of the radiation sources of the external radiation field. Therefore, how to accurately determine the deposition rate of corrosion products in liquid metal is crucial for the risk assessment of liquid metal reactor blockage.

[0043] However, in the related art, when determining the deposition rate of corrosion products in liquid metal, it is assumed that the corrosion products are completely deposited at the location where the structural material is released, while ignoring the deposition hysteresis. Therefore, the method of determining the deposition rate of corrosion products in liquid metal in the related art has the problem of inaccuracy. In addition, the current research on the deposition of corrosion products in non-isothermal loops is carried out through experiments or computational fluid dynamics (CFD), and then the risk of blockage of liquid metal stacks is evaluated. However, firstly, due to the high operating cost and difficulty in practice of non-isothermal liquid metal test loops, it is difficult to obtain the deposition mass or rate of corrosion products directly through a large number of experiments. Secondly, the computational fluid dynamics (CFD) method requires solving and calculating the three-dimensional convection-mass transfer diffusion equation, and the three-dimensional computational modeling process is complicated and the computational efficiency is low. Therefore, the method of determining the deposition rate of corrosion products in liquid metal in the related art still has the problem of low efficiency.

[0044] After introducing the background technology of the method for determining the deposition rate of corrosion products in the reactor coolant provided by the embodiment of the present application, the implementation environment involved in the method for determining the deposition rate of corrosion products in the reactor coolant provided by the embodiment of the present application will be briefly described below. The method for determining the deposition rate of corrosion products in the reactor coolant provided by the embodiment of the present application can be applied to Figure 1 In the computer device shown. The computer device can be a terminal or a server, and the computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for determining the deposition rate of corrosion products in a reactor coolant is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0045] Those skilled in the art will understand that Figure 1 The structure shown in the figure is only a block diagram of a part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific terminal may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0046] In one embodiment, Figure 2 As shown, a method for determining the deposition rate of corrosion products in a reactor coolant is provided, and the method is applied to Figure 1 Taking the computer device in the example as an example, the above coolant is a liquid metal coolant, and the following steps are included:

[0047] S201, obtaining the particle concentration of structural material corrosion products in the liquid metal coolant.

[0048] Among them, the structural material refers to the material that is in direct contact with the liquid metal in the coolant channel. For example, the structural material can be stainless steel. The main components of the structural material can be elements such as Fe, Ni, Cr, etc. The corrosion product refers to the product produced after the structural material is corroded. The corrosion product will precipitate in the form of particles. The particle concentration refers to the concentration of corrosion product particles.

[0049] In the embodiment of the present application, optionally, the computer device can directly determine the particle concentration of the corrosion product of the structural material in the liquid metal coolant through a one-dimensional solution method; or, the computer device can first perform a corrosion release test on the structural material at different temperatures, and then perform a one-dimensional solution based on the results of the corrosion release test, thereby obtaining the particle concentration of the corrosion product of the structural material in the liquid metal coolant. Of course, the embodiment of the present application does not limit the specific implementation method for obtaining the particle concentration.

[0050] S202, determining a deposition rate of corrosion product particles according to the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move along with the coolant to the deposition.

[0051] Among them, the stopping distance of the corrosion product refers to the distance that the corrosion product can move only under the action of the drag force of the movement, and the deposition rate refers to the rate at which the particles in the corrosion product are deposited. It should be noted that the corrosion products in the particle state are not directly and completely deposited at the location where the corrosion occurs, but will circulate with the coolant and will not deposit until certain conditions are met, that is, there is a deposition hysteresis of the corrosion product. Based on this, the embodiments of the present application take into account the stopping distance of the corrosion product when determining the deposition rate of the particles. Compared with the deposition rate determination method in the related art that assumes that the corrosion product is completely deposited at the location where the structural material is released and ignores the deposition hysteresis, the embodiments of the present application can determine the deposition rate more accurately.

[0052] In the embodiment of the present application, optionally, the computer device can directly determine the deposition rate of the particles in the corrosion product according to the particle concentration and the stopping distance of the corrosion product; or, the computer device can first determine the particle deposition coefficient according to the stopping distance of the corrosion product, and then determine the deposition rate of the particles in the corrosion product according to the particle concentration and the particle deposition coefficient. Of course, the embodiment of the present application does not limit the specific implementation method for determining the deposition rate.

[0053] In the above-mentioned method for determining the deposition rate of corrosion products in the reactor coolant, the particle concentration of the corrosion products of the structural material in the liquid metal coolant is obtained; the deposition rate of the particles in the corrosion products is determined according to the particle concentration and the stopping distance of the corrosion products; the performance of the liquid metal coolant channel where the structural material is located is evaluated according to the deposition rate of the particles in the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move with the coolant to deposit. The embodiment of the present application takes into account the stopping distance of the corrosion products when determining the deposition rate of the particles. Compared with the deposition rate determination method in the related art that assumes that the corrosion products are completely deposited at the position where the structural material is released and ignores the deposition lag, the embodiment of the present application can determine the deposition rate more accurately. In addition, the embodiment of the present application can obtain the particle concentration of the corrosion products of the structural material in the liquid metal coolant through a one-dimensional solution method, and comprehensively determine the deposition rate of the particles in the corrosion products according to the particle concentration and the stopping distance of the corrosion products. Compared with the method of obtaining the deposition rate through three-dimensional calculation in the related art, the deposition rate of the particles in the corrosion products can be determined more efficiently and is more suitable for engineering practice applications.

[0054] In one embodiment, a method for obtaining the particle concentration is provided, namely, "obtaining the particle concentration of the structural material corrosion product in the liquid metal coolant" in the above S201, such as Figure 3 As shown, including:

[0055] S301, determining the release rate of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures.

[0056] Among them, the release rate refers to the rate at which each metal element is released during the corrosion process. In the embodiment of the present application, optionally, the computer device can directly determine the release rate of each metal element in the structural material based on the corrosion release test of the structural material at different temperatures; or, the computer device can first determine the corrosion rate of the structural material based on the corrosion release test of the structural material at different temperatures, and then determine the release rate of each metal element in the structural material based on the corrosion rate of the structural material. Of course, the embodiment of the present application does not limit the specific implementation method for determining the release rate.

[0057] S302, obtaining the equilibrium concentration of each metal element.

[0058] Among them, the equilibrium concentration is used to determine whether each metal element will precipitate in the form of particles. In the embodiment of the present application, optionally, the computer device can directly determine the equilibrium concentration of each metal element based on historical experience; or, the computer device can also first determine the expression of the oxide solubility product corresponding to each metal element based on multiple experiments, and then determine the equilibrium concentration of each metal element based on the expression of the oxide solubility product corresponding to each metal element. Of course, the embodiment of the present application does not limit the specific implementation method for determining the equilibrium concentration.

[0059] S303, determining the particle concentration of the structural material corrosion product in the liquid metal coolant according to the release rate of each metal element and the equilibrium concentration of each metal element.

[0060] In the embodiment of the present application, optionally, the computer device can directly determine the particle concentration of the corrosion product of the structural material in the liquid metal coolant according to the release rate of each metal element and the equilibrium concentration of each metal element; or, the computer device can first determine the release mass of each metal element according to the release rate of each metal element, and then determine the particle concentration of the corrosion product of the structural material in the liquid metal coolant according to the release mass of each metal element and the equilibrium concentration of each metal element. Of course, the embodiment of the present application does not limit the specific implementation method for determining the particle concentration.

[0061] In this embodiment, the release rate of each metal element in the structural material can be accurately determined based on the corrosion release test of the structural material at different temperatures, and the equilibrium concentration of each metal element can be obtained. Therefore, the particle concentration of the corrosion product of the structural material in the liquid metal coolant can be efficiently and accurately determined through a one-dimensional solution method based on the release rate of each metal element and the equilibrium concentration of each metal element.

[0062] In one embodiment, a method for determining the release rate is provided, namely, the step of “determining the release rate of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures” in S301 above, including:

[0063] According to the corrosion release test of structural materials at different temperatures, the corrosion rate of the structural materials and the mass proportion of each metal element in the structural materials are obtained.

[0064] The release rate of each metal element in the structural material is determined according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material.

[0065] In the embodiment of the present application, the computer device can perform multiple corrosion release tests on the structural material at different temperatures, and analyze the test results of the corrosion release tests of the structural material at different temperatures to obtain the corrosion rate of the structural material, the release rate of the structural material, and the mass proportion of each metal element in the structural material by fitting. Thus, the computer device can calculate the corrosion rate of the structural material, the release rate of the structural material, and the mass proportion of each metal element in the structural material based on the law of conservation of mass to obtain the release rate of each metal element in the structural material.

[0066] For example, taking stainless steel as the structural material, the metal elements included in stainless steel are Fe, Cr, and Ni. Based on the test results of the corrosion release test of the structural material at different temperatures, the total amount of corrosion at different times, the total amount of release, the corrosion rate of stainless steel, the release rate of stainless steel, the proportion of each metal element in stainless steel, and the proportion of each metal element in the oxide film can be obtained. Therefore, according to the law of conservation of mass: total amount of corrosion = total amount of release + mass remaining in the oxide film, the proportion of each metal element per unit time can be obtained. The following formulas (1), (2), and (3) are followed:

[0067]

[0068]

[0069]

[0070] Among them, R i represents the release rate of metal element i in stainless steel (mg·dm -2 ·h -1 ); Indicates unit time (h); X i Indicates the proportion of element i in stainless steel (%); C ss Indicates the corrosion rate of stainless steel (mg·dm -2 ·h -1 );f i Indicates the ratio of metal element i to total metal elements in the stainless steel oxide film (%); R ss represents the release rate of stainless steel (mg·dm -2 ·h -1 ).

[0071] After that, the corrosion rate of stainless steel, the release rate of stainless steel, the proportion of each metal element in stainless steel, and the proportion of each metal element in the oxide film can be substituted into formulas (1), (2), and (3) for calculation to obtain the release rate of each metal element in stainless steel.

[0072] In this embodiment, the corrosion rate of the structural material and the mass proportion of each metal element in the structural material can be accurately obtained according to the corrosion release test of the structural material at different temperatures. Thus, the release rate of each metal element in the structural material can be determined according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material. Since the release rate of each metal element in the embodiment of the present application is obtained by a one-dimensional solution calculation method of the corrosion release test, the method of determining the release rate in the embodiment of the present application is more efficient and accurate.

[0073] In one embodiment, a method for determining the equilibrium concentration is provided, namely, the “obtaining the equilibrium concentration of each metal element” in the above S302, such as Figure 4 As shown, including:

[0074] S401, obtaining an expression of a product of a preset dissolved oxygen concentration and the solubility of oxides corresponding to each metal element.

[0075] In the embodiment of the present application, since there is a functional relationship between the concentration of dissolved oxygen in the liquid metal and the temperature, and taking into account aspects such as alleviating material corrosion and avoiding the generation of excessive oxides, a preset dissolved oxygen concentration can be preset. In addition, the computer device can also obtain the expression of the oxide solubility product corresponding to each metal element through multiple test fitting according to the oxide form of each metal element in the liquid metal.

[0076] For example, if oxygen is dissolved in a liquid metal environment, assuming that Fe exists in the form of FeO and Fe3O4, Ni exists in the form of NiO, and Cr exists in the form of Cr2O3, then the solubility product of the above oxides can be determined as follows:

[0077]

[0078] Among them, C Fe1,eq represents the Fe equilibrium concentration corresponding to Fe3O4 (wt.%); c0 represents the dissolved oxygen concentration in the liquid metal (wt.%); C Fe2,eq represents the equilibrium concentration of Fe corresponding to FeO (wt.%); C Ni,eq represents the equilibrium concentration of Ni in oxygen-containing liquid metal (wt.%); C Cr,eq represents the equilibrium concentration of Cr in oxygen-containing liquid metal (wt.%); T represents the temperature of liquid metal coolant (K); A1, A2, A3, A4, B1, B2, B3 and B4 are all constants.

[0079] S402, substituting the dissolved oxygen concentration into the expression of the solubility product of each oxide to calculate and obtain the equilibrium concentration of each metal element.

[0080] In the embodiment of the present application, the computer device can substitute the dissolved oxygen concentration into the expression of the solubility product of each oxide for calculation to obtain the equilibrium concentration of each metal element. For example, according to the above formulas (4), (5), (6), and (7), the equilibrium concentration of the metal element Fe can be obtained as shown in the following formula (8), the equilibrium concentration of the metal element Ni can be obtained as shown in the following formula (9), and the equilibrium concentration of the metal element Cr can be obtained as shown in the following formula (10):

[0081]

[0082] Among them, C Fe,eq It indicates the equilibrium concentration of the metal element Fe in the coolant (wt.%).

[0083] In this embodiment, the expressions of the preset dissolved oxygen concentration and the oxide solubility product corresponding to each metal element can be obtained, and the dissolved oxygen concentration is substituted into the expression of each oxide solubility product for calculation, so that the equilibrium concentration of each metal element can be obtained efficiently and accurately through one-dimensional solution calculation.

[0084] In one embodiment, a method for determining the concentration of particulate matter is provided, namely, the step of “determining the concentration of particulate matter of the corrosion product of the structural material in the liquid metal coolant according to the release rate of each metal element and the equilibrium concentration of each metal element” in S303 above, including:

[0085] According to the release rate of each metal element, the release mass of each metal element is determined.

[0086] The particle concentration of the corrosion products of the structural material in the liquid metal coolant is determined based on the released mass of each metal element and the equilibrium concentration of each metal element.

[0087] In the embodiment of the present application, the computer device can determine the release mass of each metal element according to the release rate of each metal element using the following formula (11).

[0088]

[0089] in, represents the release mass of metal element i in the coolant (mg); R i,k represents the release rate of metal element i in stainless steel in the control body k (mg·dm -2 ·h -1 ); A k represents the surface area of ​​the control volume (dm 2 ). The control volume refers to the coolant channel section with the same temperature in the non-isothermal loop.

[0090] When the concentration of metal element i released by corrosion exceeds the corresponding equilibrium concentration, metal element i will precipitate in the form of particles. Therefore, the computer equipment can determine the concentration of particles in the corrosion products of the structural material using the following formula (12) based on the released mass and equilibrium concentration of each metal element, combined with parameters such as the coolant mass and the wetting area of ​​the structural material.

[0091]

[0092] Among them, C i,particle Indicates the concentration of metal element i particles in the coolant (wt.%); Indicates the coolant density (g·cm -3 ); V cool Indicates the volume of coolant (cm 3 ); C i,eq It represents the equilibrium concentration of metal element i in the coolant (wt.%).

[0093] In this embodiment, the released mass of each metal element is determined according to the release rate of each metal element. Thus, the particle concentration of the corrosion products of the structural material in the liquid metal coolant can be efficiently and accurately determined by a one-dimensional solution calculation method based on the released mass of each metal element and the equilibrium concentration of each metal element.

[0094] In one embodiment, a method for determining a deposition rate is provided, namely, the step of “determining a deposition rate of particles in the corrosion products according to a particle concentration and a stopping distance of the corrosion products” in S202, including:

[0095] The particle deposition coefficient is determined based on the stopping distance of the corrosion products and the size information of the liquid metal coolant channel.

[0096] The deposition rate of particles in the corrosion products is determined based on the particle concentration, particle deposition coefficient and the size information of the liquid metal coolant channel.

[0097] In the embodiment of the present application, the corrosion product particles will continue to migrate with the coolant after precipitation, and the particles will not be deposited on the wall until they pass through the stagnant zone. Based on this, assuming that the particle sizes of the metal element particles are the same, the computer device can obtain the size information of the liquid metal coolant channel and the size information of the corrosion product particles, and determine the stopping distance of the corrosion product according to the stopping distance of the corrosion product and the size information of the coolant channel using the following formulas (13) and (14).

[0098]

[0099] Where S is the stopping distance of corrosion products, represents the particle density of metal element i (kg·m-3 ); Indicates the average flow rate of the coolant (m·s -1 ); Indicates the dynamic viscosity of the coolant (kg·m -1 ·s -1 ); d represents the particle size, which is assumed to be 1×10 -6 m; represents the particle tube friction coefficient; It represents the pipeline diameter or the fluid equivalent diameter of the control volume k (m).

[0100] Afterwards, the computer equipment can determine the particle deposition coefficient according to the stopping distance of the corrosion products and the size information of the coolant channel using the following formula (15), that is, the particle deposition coefficient R dep It is equal to the ratio of the cross-sectional area of ​​the particle deposition layer to the total cross-sectional area.

[0101]

[0102] Therefore, the computer device can determine the number of particle deposition N of each control body in one time step according to the particle concentration, particle deposition coefficient and the size information of the liquid metal coolant channel using the following formula (16): dep , thus the deposition rate of particles in the corrosion products can be determined.

[0103]

[0104] In this embodiment, the particle deposition coefficient can be determined according to the stopping distance of the corrosion product and the size information of the liquid metal coolant channel, so that the deposition rate of the particles in the corrosion product can be determined according to the particle concentration, the particle deposition coefficient and the size information of the liquid metal coolant channel. Since the embodiment of the present application takes the stopping distance of the corrosion product into consideration when determining the deposition rate of the particles, compared with the deposition rate determination method in the related art that assumes that the corrosion product is completely deposited at the position where the structural material is released and ignores the deposition hysteresis, the embodiment of the present application can also determine the deposition rate more accurately.

[0105] In summary of all the above embodiments, the present application also provides a complete method for determining the deposition rate of corrosion products in a reactor coolant, such as Figure 5 As shown, the method includes:

[0106] S21, according to the corrosion release test of the structural material at different temperatures, obtain the corrosion rate of the structural material and the mass proportion of each metal element in the structural material;

[0107] S22, determining the release rate of each metal element in the structural material according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material;

[0108] S23, obtaining a preset dissolved oxygen concentration;

[0109] S24, obtaining an expression for the oxide solubility product corresponding to each metal element;

[0110] S25, substituting the dissolved oxygen concentration into the expression of the solubility product of each oxide to calculate and obtain the equilibrium concentration of each metal element;

[0111] S26, determining the release mass of each metal element according to the release rate of each metal element;

[0112] Determine the particle concentration of structural material corrosion products in the liquid metal coolant based on the released mass of each metal element and the equilibrium concentration of each metal element;

[0113] S27, determining a particle deposition coefficient according to the stopping distance of the corrosion product and the dimension information of the coolant channel;

[0114] The deposition rate of particles in the corrosion products is determined based on the particle concentration, particle deposition coefficient and the size information of the liquid metal coolant channel.

[0115] In the above-mentioned method for determining the deposition rate of corrosion products in the reactor coolant, the particle concentration of the corrosion products of the structural material in the liquid metal coolant can be obtained by a one-dimensional solution method, and the deposition rate of the particles in the corrosion products can be comprehensively determined based on the particle concentration and the stopping distance of the corrosion products. Compared with the method of obtaining the deposition rate by three-dimensional calculation in the related art, the deposition rate of the particles in the corrosion products can be determined more efficiently and is more suitable for engineering practice applications. In addition, the embodiment of the present application takes into account the stopping distance of the corrosion products when determining the deposition rate of the particles. Compared with the deposition rate determination method in the related art that assumes that the corrosion products are completely deposited at the location where the structural material is released and ignores the deposition lag, the embodiment of the present application can also determine the deposition rate more accurately. Therefore, the embodiments of the present application fully consider the influence of the local operating parameters (such as coolant flow rate, oxygen concentration, etc.) of the non-isothermal liquid metal loop, the loop temperature distribution, and the geometric dimensions (pipeline length and diameter, etc.) on the deposition of corrosion products, and can combine the fitting results of the dynamic corrosion release test of structural materials with the calculation results of the solubility of metal elements in the liquid metal environment, and can determine the deposition rate of corrosion products in combination with the stopping distance, so as to more accurately predict and evaluate the corrosion and / or deposition of the entire liquid metal loop.

[0116] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0117] Based on the same inventive concept, the embodiment of the present application also provides a device for determining the deposition rate of corrosion products in a reactor coolant for implementing the method for determining the deposition rate of corrosion products in a reactor coolant involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of the device for determining the deposition rate of corrosion products in a reactor coolant provided below can refer to the limitations of the method for determining the deposition rate of corrosion products in a reactor coolant above, and will not be repeated here.

[0118] In an exemplary embodiment, Figure 6 As shown, a device for determining the deposition rate of corrosion products in a reactor coolant is provided, wherein the coolant is a liquid metal coolant. The device for determining the deposition rate of corrosion products in the reactor coolant comprises: an acquisition module 31 and a determination module 32, wherein:

[0119] The acquisition module 31 is used to obtain the particle concentration of the structural material corrosion product in the liquid metal coolant.

[0120] The determination module 32 is used to determine the deposition rate of the particles in the corrosion products according to the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move along with the coolant to the deposition.

[0121] In one embodiment, the acquisition module 31 includes:

[0122] A release rate determination unit, used to determine the release rate of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures;

[0123] The equilibrium concentration acquisition unit is used to obtain the equilibrium concentration of each metal element;

[0124] The particle concentration determination unit is used to determine the particle concentration of the corrosion products of the structural material in the liquid metal coolant according to the release rate of each metal element and the equilibrium concentration of each metal element.

[0125] In one embodiment, the release rate determination unit comprises:

[0126] The first acquisition subunit is used to obtain the corrosion rate of the structural material and the mass proportion of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures;

[0127] The release rate determination subunit is used to determine the release rate of each metal element in the structural material according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material.

[0128] In one embodiment, the equilibrium concentration acquisition unit includes:

[0129] The second acquisition subunit is used to obtain an expression of a product of a preset dissolved oxygen concentration and a solubility of an oxide corresponding to each metal element;

[0130] The equilibrium concentration determination subunit is used to substitute the dissolved oxygen concentration into the expression of the solubility product of each oxide to calculate and obtain the equilibrium concentration of each metal element.

[0131] In one embodiment, the particle concentration determination unit includes:

[0132] A release mass determination subunit, used to determine the release mass of each metal element according to the release rate of each metal element;

[0133] The particle concentration determination subunit is used to determine the particle concentration of the corrosion products of the structural material in the liquid metal coolant according to the released mass of each metal element and the equilibrium concentration of each metal element.

[0134] In one embodiment, the determination module 32 includes:

[0135] a particle deposition coefficient determination unit, used to determine the particle deposition coefficient according to the stopping distance of the corrosion product and the size information of the liquid metal coolant channel;

[0136] The deposition rate determination unit is used to determine the deposition rate of particles in the corrosion product according to the particle concentration, the particle deposition coefficient and the size information of the liquid metal coolant channel.

[0137] Each module in the above-mentioned coolant channel performance evaluation device can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0138] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 1 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a method for determining the deposition rate of corrosion products in a reactor coolant is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0139] Those skilled in the art will understand that Figure 1 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0140] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0141] Obtain the particle concentration of structural material corrosion products in liquid metal coolant;

[0142] The deposition rate of particles in the corrosion products is determined based on the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move with the coolant to the deposition.

[0143] In one embodiment, the concentration of particles of corrosion products of structural materials in liquid metal coolant is obtained, and the processor further implements the following steps when executing the computer program:

[0144] According to the corrosion release test of structural materials at different temperatures, the release rate of each metal element in the structural material is determined;

[0145] Obtain the equilibrium concentration of each metal element;

[0146] The particle concentration of the corrosion products of the structural material in the liquid metal coolant is determined based on the release rate of each metal element and the equilibrium concentration of each metal element.

[0147] In one embodiment, according to the corrosion release test of the structural material at different temperatures, the release rate of each metal element in the structural material is determined, and the processor further implements the following steps when executing the computer program:

[0148] According to the corrosion release test of structural materials at different temperatures, the corrosion rate of structural materials and the mass proportion of each metal element in the structural materials are obtained;

[0149] The release rate of each metal element in the structural material is determined according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material.

[0150] In one embodiment, the equilibrium concentration of each metal element is obtained, and the processor further implements the following steps when executing the computer program:

[0151] Obtain the expression of the product of the preset dissolved oxygen concentration and the oxide solubility of each metal element;

[0152] Substituting the dissolved oxygen concentration into the expression of the solubility product of each oxide for calculation, the equilibrium concentration of each metal element is obtained.

[0153] In one embodiment, the concentration of particles of the corrosion products of the structural material in the liquid metal coolant is determined based on the release rate of each metal element and the equilibrium concentration of each metal element, and the processor further implements the following steps when executing the computer program:

[0154] According to the release rate of each metal element, the release mass of each metal element is determined;

[0155] The particle concentration of the corrosion products of the structural material in the liquid metal coolant is determined based on the released mass of each metal element and the equilibrium concentration of each metal element.

[0156] In one embodiment, the deposition rate of particles in the corrosion products is determined based on the particle concentration and the stopping distance of the corrosion products, and the processor further implements the following steps when executing the computer program:

[0157] Determine the particle deposition coefficient based on the stopping distance of the corrosion products and the size information of the liquid metal coolant channel;

[0158] The deposition rate of particles in the corrosion products is determined based on the particle concentration, particle deposition coefficient and the size information of the liquid metal coolant channel.

[0159] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0160] Obtain the particle concentration of structural material corrosion products in liquid metal coolant;

[0161] The deposition rate of particles in the corrosion products is determined based on the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move with the coolant to the deposition.

[0162] In one embodiment, the concentration of particles of corrosion products of structural materials in a liquid metal coolant is obtained, and when the computer program is executed by a processor, the following steps are also implemented:

[0163] According to the corrosion release test of structural materials at different temperatures, the release rate of each metal element in the structural material is determined;

[0164] Obtain the equilibrium concentration of each metal element;

[0165] The particle concentration of the corrosion products of the structural material in the liquid metal coolant is determined based on the release rate of each metal element and the equilibrium concentration of each metal element.

[0166] In one embodiment, according to the corrosion release test of the structural material at different temperatures, the release rate of each metal element in the structural material is determined, and when the computer program is executed by the processor, the following steps are also implemented:

[0167] According to the corrosion release test of structural materials at different temperatures, the corrosion rate of structural materials and the mass proportion of each metal element in the structural materials are obtained;

[0168] The release rate of each metal element in the structural material is determined according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material.

[0169] In one embodiment, the equilibrium concentration of each metal element is obtained, and when the computer program is executed by the processor, the following steps are also implemented:

[0170] Obtain the expression of the product of the preset dissolved oxygen concentration and the oxide solubility of each metal element;

[0171] Substituting the dissolved oxygen concentration into the expression of the solubility product of each oxide for calculation, the equilibrium concentration of each metal element is obtained.

[0172] In one embodiment, the concentration of particles of the corrosion products of the structural material in the liquid metal coolant is determined based on the release rate of each metal element and the equilibrium concentration of each metal element, and the computer program, when executed by the processor, further implements the following steps:

[0173] According to the release rate of each metal element, the release mass of each metal element is determined;

[0174] The particle concentration of the corrosion products of the structural material in the liquid metal coolant is determined based on the released mass of each metal element and the equilibrium concentration of each metal element.

[0175] In one embodiment, the deposition rate of particles in the corrosion products is determined based on the particle concentration and the stopping distance of the corrosion products, and the computer program, when executed by the processor, further implements the following steps:

[0176] Determine the particle deposition coefficient based on the stopping distance of the corrosion products and the size information of the liquid metal coolant channel;

[0177] The deposition rate of particles in the corrosion products is determined based on the particle concentration, particle deposition coefficient and the size information of the liquid metal coolant channel.

[0178] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0179] Obtain the particle concentration of structural material corrosion products in liquid metal coolant;

[0180] The deposition rate of particles in the corrosion products is determined based on the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move with the coolant to the deposition.

[0181] In one embodiment, the concentration of particles of corrosion products of structural materials in a liquid metal coolant is obtained, and when the computer program is executed by a processor, the following steps are also implemented:

[0182] According to the corrosion release test of structural materials at different temperatures, the release rate of each metal element in the structural material is determined;

[0183] Obtain the equilibrium concentration of each metal element;

[0184] The particle concentration of the corrosion products of the structural material in the liquid metal coolant is determined based on the release rate of each metal element and the equilibrium concentration of each metal element.

[0185] In one embodiment, according to the corrosion release test of the structural material at different temperatures, the release rate of each metal element in the structural material is determined, and when the computer program is executed by the processor, the following steps are also implemented:

[0186] According to the corrosion release test of structural materials at different temperatures, the corrosion rate of structural materials and the mass proportion of each metal element in the structural materials are obtained;

[0187] The release rate of each metal element in the structural material is determined according to the corrosion rate of the structural material and the proportion of each metal element in the structural material.

[0188] In one embodiment, the equilibrium concentration of each metal element is obtained, and when the computer program is executed by the processor, the following steps are also implemented:

[0189] Obtain the expression of the product of the preset dissolved oxygen concentration and the oxide solubility of each metal element;

[0190] Substituting the dissolved oxygen concentration into the expression of the solubility product of each oxide for calculation, the equilibrium concentration of each metal element is obtained.

[0191] In one embodiment, the concentration of particles of the corrosion products of the structural material in the liquid metal coolant is determined based on the release rate of each metal element and the equilibrium concentration of each metal element, and the computer program, when executed by the processor, further implements the following steps:

[0192] According to the release rate of each metal element, the release mass of each metal element is determined;

[0193] The particle concentration of the corrosion products of the structural material in the liquid metal coolant is determined based on the released mass of each metal element and the equilibrium concentration of each metal element.

[0194] In one embodiment, the deposition rate of particles in the corrosion products is determined based on the particle concentration and the stopping distance of the corrosion products, and the computer program, when executed by the processor, further implements the following steps:

[0195] Determine the particle deposition coefficient based on the stopping distance of the corrosion products and the size information of the liquid metal coolant channel;

[0196] The deposition rate of particles in the corrosion products is determined based on the particle concentration, particle deposition coefficient and the size information of the liquid metal coolant channel.

[0197] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0198] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0199] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for determining the deposition rate of corrosion products in a reactor coolant, wherein the coolant is a liquid metal coolant, characterized in that: The method comprises: Obtaining the particle concentration of structural material corrosion products in the liquid metal coolant; The deposition rate of the particles in the corrosion products is determined according to the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move along with the coolant to the deposition.

2. The method according to claim 1, characterized in that The step of obtaining the particle concentration of the corrosion product of the structural material in the liquid metal coolant comprises: Determining the release rate of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures; Obtaining the equilibrium concentration of each of the metal elements; The particle concentration of the structural material corrosion product in the liquid metal coolant is determined according to the release rate of each of the metal elements and the equilibrium concentration of each of the metal elements.

3. The method according to claim 2, characterized in that Determining the release rate of each metal element in the structural material according to the corrosion release test of the structural material at different temperatures includes: According to the corrosion release test of the structural material at different temperatures, the corrosion rate of the structural material and the mass proportion of each metal element in the structural material are obtained; The release rate of each metal element in the structural material is determined according to the corrosion rate of the structural material and the mass proportion of each metal element in the structural material.

4. The method according to claim 2, characterized in that: The obtaining of the equilibrium concentration of each of the metal elements comprises: Obtaining an expression for the product of a preset dissolved oxygen concentration and the solubility of the oxide corresponding to each of the metal elements; The dissolved oxygen concentration is substituted into the expression of the solubility product of each of the oxides for calculation to obtain the equilibrium concentration of each of the metal elements.

5. The method according to claim 2, characterized in that: Determining the particle concentration of the structural material corrosion product in the liquid metal coolant according to the release rate of each of the metal elements and the equilibrium concentration of each of the metal elements comprises: Determining the release mass of each of the metal elements according to the release rate of each of the metal elements; The particle concentration of the structural material corrosion product in the liquid metal coolant is determined according to the released mass of each of the metal elements and the equilibrium concentration of each of the metal elements.

6. The method according to any one of claims 1 to 5, characterized in that The step of determining the deposition rate of the particles in the corrosion products according to the particle concentration and the stopping distance of the corrosion products comprises: determining a particle deposition coefficient according to the stopping distance of the corrosion product and the dimension information of the liquid metal coolant channel; The deposition rate of the particles in the corrosion product is determined according to the particle concentration, the particle deposition coefficient and the size information of the liquid metal coolant channel.

7. A device for determining the deposition rate of corrosion products in a reactor coolant, characterized in that: The coolant is a liquid metal coolant, and the device comprises: An acquisition module, used for acquiring the particle concentration of structural material corrosion products in the liquid metal coolant; The determination module is used to determine the deposition rate of the particles in the corrosion products according to the particle concentration and the stopping distance of the corrosion products; the stopping distance is used to characterize the distance that the corrosion product particles move with the coolant to the deposition.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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