A method, device, equipment and medium for replenishing water in a primary loop of a nuclear power plant

Abstract

This invention discloses a method, apparatus, equipment, and medium for makeup water in the primary loop of a nuclear power plant, relating to the field of boron water makeup technology for nuclear power plants. The method includes: determining a first makeup water boron concentration based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop; performing initial makeup water on the primary loop based on the first makeup water boron concentration and a first makeup water volume, and obtaining the change in boron concentration between the initial makeup water and the initial boron concentration; if the change in boron concentration exceeds a preset threshold, determining a second makeup water boron concentration based on the first makeup water boron concentration and the change in boron concentration, and using the second makeup water boron concentration as the target makeup water boron concentration; and performing a second makeup water operation on the primary loop based on the target makeup water boron concentration and the second makeup water volume required by the primary loop. This solution can avoid drastic changes in core reactivity due to abnormal boron concentration ratios during makeup water operations, thus improving the stability of nuclear power plant core reactivity.

Description

Technical Field

[0001] This invention relates to the field of boron water replenishment technology for nuclear power plants, and more particularly to a method, apparatus, equipment, and medium for replenishing water in the primary loop of a nuclear power plant. Background Technology

[0002] Nuclear power plants require primary loop makeup water operations, which involve injecting boron-containing water of a certain boron concentration into the primary loop. The principle of makeup water is to maintain the reactor core reactivity within the planned range.

[0003] In existing technologies, the main approach is to inject hydrated boron, with a concentration consistent with the current core boron concentration, into the primary coolant circuit to maintain core reactivity. However, if the boron concentration ratio of the injected hydrated boron is abnormal, it can lead to unplanned fluctuations in core reactivity after makeup water, severely impacting core reactivity stability. Summary of the Invention

[0004] This invention provides a method, apparatus, equipment, and medium for replenishing water in the primary loop of a nuclear power plant to improve the stability of the reactor core reactivity.

[0005] In a first aspect, the present invention provides a method for makeup water in the primary circuit of a nuclear power plant, comprising:

[0006] The first makeup water boron concentration is determined based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant.

[0007] Based on the first makeup water boron concentration and the first makeup water volume, the primary loop of the nuclear power plant is first makeuped, and the change in boron concentration in the primary loop after the first makeup water is obtained between the initial boron concentration and the boron concentration.

[0008] If the change in boron concentration is greater than the preset threshold, the second boron concentration for replenishing water is determined based on the first replenishment boron concentration and the change in boron concentration, and the second replenishment boron concentration is used as the target replenishment boron concentration.

[0009] Based on the target boron concentration in the makeup water and the second makeup water volume required for the primary loop of the nuclear power plant, a secondary makeup water supply is carried out for the primary loop of the nuclear power plant.

[0010] Secondly, the present invention also provides a water replenishment device for the primary loop of a nuclear power plant, comprising:

[0011] The first boron concentration determination module is used to determine the first makeup water boron concentration based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant.

[0012] The initial water replenishment module is used to perform initial water replenishment on the primary loop of the nuclear power plant based on the initial water replenishment boron concentration and the initial water replenishment volume, and to obtain the change in boron concentration in the primary loop after the initial water replenishment compared with the initial boron concentration.

[0013] The target boron concentration determination module is used to determine the second replenishment boron concentration based on the first replenishment boron concentration and the change in boron concentration if the change in boron concentration is greater than a preset threshold, and to use the second replenishment boron concentration as the target replenishment boron concentration.

[0014] The secondary water replenishment module is used to replenish the primary circuit of a nuclear power plant with secondary water based on the target boron concentration and the required secondary water volume.

[0015] Thirdly, embodiments of the present invention also provide an electronic device, comprising:

[0016] At least one processor; and

[0017] A memory that is communicatively connected to at least one processor; wherein

[0018] The memory stores instructions that can be executed by at least one processor, which enables the at least one processor to perform the water replenishment method for the primary loop of a nuclear power plant provided in any embodiment of the present invention.

[0019] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer instructions, which are used to cause a processor to execute and implement the water replenishment method for the primary circuit of a nuclear power plant according to any embodiment of the present invention.

[0020] In this embodiment of the invention, a first makeup water boron concentration is determined based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant; based on the first makeup water boron concentration and the first makeup water volume, the primary loop of the nuclear power plant is initially makeuped, and the change in boron concentration between the primary loop boron concentration after the initial makeup water and the initial boron concentration is obtained; if the change in boron concentration is greater than a preset threshold, a second makeup water boron concentration is determined based on the first makeup water boron concentration and the change in boron concentration, and the second makeup water boron concentration is used as the target makeup water boron concentration; based on the target makeup water boron concentration and the second makeup water volume required for the primary loop of the nuclear power plant, a second makeup water is performed on the primary loop of the nuclear power plant. The technical solution of this invention, if the change in boron concentration between the primary loop boron concentration after the first water replenishment and the initial boron concentration is greater than a preset threshold, then a second water replenishment boron concentration is determined, and this second water replenishment boron concentration is used as the target water replenishment boron concentration for secondary water replenishment of the nuclear power plant's primary loop. This can avoid abnormal boron concentration during water replenishment due to problems such as boron water proportioning equipment failure or pipeline valve leakage, which could lead to drastic changes in core reactivity after water replenishment, thus improving the stability of the nuclear power plant's core reactivity.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart of a water replenishment method for the primary loop of a nuclear power plant according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a flowchart of a water replenishment method for the primary circuit of a nuclear power plant according to Embodiment 2 of the present invention;

[0025] Figure 3 This is a structural diagram of a water replenishment device for the primary loop of a nuclear power plant according to Embodiment 3 of the present invention;

[0026] Figure 4 This is a schematic diagram of an electronic device for a water replenishment method for the primary loop of a nuclear power plant, provided in Embodiment 4 of the present invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Example 1

[0030] Figure 1This is a flowchart of a water replenishment method for the primary loop of a nuclear power plant provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of replenishing water in the primary loop of a nuclear power plant. The method can be executed by a water replenishment device for the primary loop of the nuclear power plant. The water replenishment device for the primary loop of the nuclear power plant can be implemented in hardware and / or software and specifically configured in electronic equipment, such as a server.

[0031] like Figure 1 As shown, the method includes:

[0032] S101. Determine the first makeup water boron concentration based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant.

[0033] In this embodiment, the initial boron concentration can be the concentration of boric acid in the borosilicate water of the primary loop of the nuclear power plant; the effective boron abundance can be the abundance of boron-10 in the borosilicate water of the primary loop of the nuclear power plant that can effectively absorb neutrons; the unit boron abundance can be the abundance of boron-10 in the borosilicate water of the nuclear power unit that can effectively absorb neutrons; the first makeup water boron concentration can be the concentration of boric acid in the borosilicate water used to make makeup for the primary loop of the nuclear power plant; makeup water can be understood as the operation of injecting borosilicate water into the primary loop of the nuclear power plant. Specifically, the product of the initial boron concentration and the effective boron abundance can be determined, and the ratio of this product to the unit boron abundance is used as the first makeup water boron concentration. For example, the first makeup water boron concentration can be determined by the following formula:

[0034]

[0035] Among them, CB normal Indicates the boron concentration of the first makeup water; CB RCS Indicates the initial boron concentration; B10 deplete Indicates the effective abundance of boron; CB S This indicates the boron abundance of the unit.

[0036] In one specific implementation, if the boron abundance of the unit is 19.9%, the boron concentration of the first makeup water can be determined using the following formula:

[0037]

[0038] Among them, CB normal Indicates the boron concentration of the first makeup water; CB RCS Indicates the initial boron concentration; B10 deplete Indicates the effective abundance of boron.

[0039] S102. Based on the first makeup water boron concentration and the first makeup water volume, perform the first makeup water for the primary loop of the nuclear power plant, and obtain the change in boron concentration of the primary loop after the first makeup water compared with the initial boron concentration.

[0040] In this embodiment, the boron concentration in the primary loop can be the concentration of boric acid in the boron water of the primary loop of the nuclear power plant after the first replenishment; the change in boron concentration can be the change between the boron concentration in the primary loop after the first replenishment and the initial boron concentration; the first replenishment volume can be set independently by technicians according to actual needs or practical experience, and this invention does not limit this.

[0041] Specifically, boron water with a boron concentration equal to the first makeup water boron concentration and a volume equal to the first makeup water volume is injected into the primary loop of the nuclear power plant, and the change in boron concentration in the primary loop after the first makeup water injection is obtained compared to the initial boron concentration. It should be noted that the change in boron concentration can be obtained using at least one of the existing technologies, and this invention is not limited to this. For example, the change in boron concentration can be obtained by controlling the amplitude of the movement of control rods, or by obtaining the change in boron concentration using monitoring software, etc.

[0042] It is understandable that by adopting the above technical solution, the boron concentration of the first makeup water is determined based on the initial boron concentration, effective boron abundance, and unit boron abundance of the nuclear power plant's primary loop, and the first makeup water is made into the primary loop of the nuclear power plant based on the first makeup water boron concentration, it can be ensured that the boron concentration of the boron water in the nuclear power unit remains unchanged during the first makeup water process.

[0043] S103. If the change in boron concentration is greater than the preset threshold, the second boron concentration for replenishing water is determined based on the first replenishment boron concentration and the change in boron concentration, and the second replenishment boron concentration is used as the target replenishment boron concentration.

[0044] In this embodiment, the second makeup water boron concentration can be the concentration of boric acid in the boron water used to replenish the primary circuit of the nuclear power plant when the change in boron concentration is greater than a preset threshold; the target makeup water boron concentration can be the concentration of boric acid in the boron water used to replenish the primary circuit of the nuclear power plant after the first makeup water; the preset threshold can be set independently by technicians according to actual needs or practical experience, and the present invention does not limit it.

[0045] In an optional embodiment, if the change in boron concentration is less than or equal to a preset threshold, the first makeup water boron concentration is taken as the target makeup water boron concentration. It is understood that by adopting the above technical solution, the target makeup water boron concentration can be flexibly determined based on the relationship between the change in boron concentration and the preset threshold, improving the flexibility in determining the target makeup water boron concentration and enhancing the stability of the nuclear power plant core reactivity after secondary makeup water replenishment based on the target makeup water boron concentration.

[0046] S104. Based on the target boron concentration in the makeup water and the second makeup water volume required for the primary circuit of the nuclear power plant, perform secondary makeup water replenishment for the primary circuit of the nuclear power plant.

[0047] In this embodiment, the second makeup water volume can be set independently by technicians based on actual needs or practical experience; this invention does not limit this. Specifically, boron water with a boron concentration equal to the target makeup water boron concentration and a volume equal to the second makeup water volume is injected into the primary loop of the nuclear power plant.

[0048] Optionally, based on the target makeup water boron concentration and the second makeup water volume required for the primary loop of the nuclear power plant, secondary makeup water is provided for the primary loop of the nuclear power plant. This includes setting the target makeup water boron concentration and the second makeup water volume in the chemical control system and providing secondary makeup water for the primary loop of the nuclear power plant.

[0049] In this embodiment, the chemical control system can be used to control the volume, chemical properties, and core reactivity of the boron water in the primary loop of a nuclear power plant. Specifically, a target makeup water boron concentration and a second makeup water volume are set in the chemical control system, and boron water with a boron concentration equal to the target makeup water boron concentration and a volume equal to the second makeup water volume is injected into the primary loop of the nuclear power plant.

[0050] In this embodiment of the invention, a first makeup water boron concentration is determined based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant. Based on the first makeup water boron concentration and the first makeup water volume, the primary loop of the nuclear power plant is initially makeuped, and the change in boron concentration between the initial makeup water concentration and the initial boron concentration is obtained. If the change in boron concentration is greater than a preset threshold, a second makeup water boron concentration is determined based on the first makeup water boron concentration and the change in boron concentration, and this second makeup water boron concentration is used as the target makeup water boron concentration. Based on the target makeup water boron concentration and the second makeup water volume required for the primary loop of the nuclear power plant, a second makeup water is performed on the primary loop of the nuclear power plant. The technical solution of this invention, if the change in boron concentration between the primary loop boron concentration after the first water replenishment and the initial boron concentration is greater than a preset threshold, then a second water replenishment boron concentration is determined, and this second water replenishment boron concentration is used as the target water replenishment boron concentration for secondary water replenishment of the nuclear power plant's primary loop. This can avoid abnormal boron concentration during water replenishment due to problems such as boron water proportioning equipment failure or pipeline valve leakage, which could lead to drastic changes in core reactivity after water replenishment, thus improving the stability of the nuclear power plant's core reactivity.

[0051] Example 2

[0052] Figure 2 This is a flowchart of a water replenishment method for the primary loop of a nuclear power plant provided in Embodiment 2 of the present invention. Based on the technical solution of the above embodiments, the present invention optimizes and improves the operation of determining the boron concentration of the second replenishment water.

[0053] Furthermore, the process of "determining the second makeup water boron concentration based on the first makeup water boron concentration and the change in boron concentration" is refined to "determining the second makeup water boron concentration based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume" to improve the operation of determining the second makeup water boron concentration.

[0054] It should be noted that for any parts not described in detail in the embodiments of the present invention, please refer to the description in the foregoing embodiments.

[0055] like Figure 2 The method shown includes:

[0056] S201. Determine the first makeup water boron concentration based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant.

[0057] S202. Based on the first makeup water boron concentration and the first makeup water volume, perform the first makeup water for the primary loop of the nuclear power plant, and obtain the change in boron concentration of the primary loop after the first makeup water compared with the initial boron concentration.

[0058] S203. If the change in boron concentration is greater than the preset threshold, the second boron concentration in the makeup water is determined based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume, and the second makeup water boron concentration is used as the target makeup water boron concentration.

[0059] In this embodiment, the target replenishment volume is the sum of the first replenishment volume and the second replenishment volume; the primary loop water volume is the total volume of boron water in the primary loop of the nuclear power plant.

[0060] Optionally, the second makeup water boron concentration is determined based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume. This includes: determining the primary loop target boron concentration based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume; and determining the second makeup water boron concentration based on the primary loop target boron concentration, the initial boron concentration, the target makeup water volume, and the primary loop water volume.

[0061] The target boron concentration in the primary loop can be understood as the concentration of boric acid in the boron water of the primary loop of the nuclear power plant after secondary makeup water. Specifically, the target boron concentration in the primary loop is determined based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume. The ratio of the target makeup water volume to the primary loop water volume is determined, and the power of this ratio with the natural constant e as the base is used as the makeup water parameter. The product of the target boron concentration in the primary loop and the makeup water parameter is determined, and the difference between this product and the initial boron concentration is determined. The ratio of this difference to the makeup water parameter minus one is used as the second makeup water boron concentration. For example, the second makeup water boron concentration can be determined using the following formula:

[0062]

[0063] Among them, CB value Indicates the boron concentration of the second makeup water; CB RCSvalue Indicates the target boron concentration in the primary loop; CB RCS V represents the initial boron concentration; blend V represents the target water replenishment volume; t This indicates the volume of water in the primary loop.

[0064] It is understandable that by adopting the above technical solution, the target boron concentration of the primary loop is determined, and the boron concentration of the secondary makeup water is determined based on the target boron concentration of the primary loop, the initial boron concentration, the target makeup water volume, and the primary loop water volume. This improves the accuracy of the boron concentration of the secondary makeup water, and thus improves the stability of the reactor core reactivity after secondary makeup water is carried out based on the target boron concentration of the secondary makeup water.

[0065] Optionally, the target boron concentration for the primary loop is determined based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume. This includes: determining a reference boron concentration based on the first makeup water boron concentration, the initial boron concentration, the target makeup water volume, and the primary loop water volume; determining the change in reference boron concentration based on the target makeup water volume, the change in boron concentration, and the first makeup water volume; and determining the difference between the reference boron concentration and the change in reference boron concentration as the target boron concentration for the primary loop.

[0066] The reference boron concentration is the boron concentration after replenishing the primary loop of the nuclear power plant with water based on the first replenishment boron concentration and the target replenishment volume; the change in reference boron concentration is the change in boron concentration between the reference boron concentration and the first boron concentration.

[0067] Specifically, determine the difference between the first makeup water boron concentration and the initial boron concentration, and the ratio of this difference to the makeup water parameter; use the difference between the first makeup water boron concentration and this ratio as the reference boron concentration; for example, the reference boron concentration can be determined using the following formula:

[0068]

[0069] Among them, CB RCSnormal Indicates reference boron concentration; CB normal Indicates the boron concentration of the first makeup water; CB RCS V represents the initial boron concentration; blend V represents the target water replenishment volume; t This indicates the volume of water in the primary loop.

[0070] Determine the ratio of the change in boron concentration to the first makeup water volume, and use the product of this ratio and the target makeup water volume as the reference change in boron concentration; for example, the reference change in boron concentration can be determined by the following formula:

[0071]

[0072] Among them, CB t V represents the change in reference boron concentration. blend Indicates the target water replenishment volume; CB x V represents the change in boron concentration; x Indicates the first water replenishment volume;

[0073] The difference between the reference boron concentration and the change in the reference boron concentration is determined as the primary loop target boron concentration; for example, the primary loop target boron concentration can be determined using the following formula:

[0074] CB RCSvalue =CB RCSnormal -CB t ;

[0075] Among them, CB RCSvalue Indicates the target boron concentration in the primary loop; CB RCSnormal Indicates reference boron concentration; CB t This indicates the change in reference boron concentration.

[0076] In one optional embodiment, the primary loop water volume is 200 m³. 3 Based on the above methods for determining the reference boron concentration, the method for determining the change in reference boron concentration, the method for determining the target boron concentration in the primary loop, and the method for determining the boron concentration in the second makeup water, the boron concentration in the second makeup water can be determined using the following formula:

[0077]

[0078] Among them, CB value Indicates the boron concentration of the second makeup water; CB RCS Indicates the initial boron concentration; CB normal Indicates the boron concentration in the first makeup water; V blend Indicates the target water replenishment volume; CB x V represents the change in boron concentration;x This indicates the first water replenishment volume.

[0079] Understandably, by adopting the above technical solution, the target boron concentration of the primary loop is determined based on the reference boron concentration and the change in the reference boron concentration, thereby improving the accuracy of the target boron concentration of the primary loop, further improving the accuracy of the boron concentration of the second makeup water, and improving the stability of the reactor core reactivity after secondary makeup water is made based on the second makeup water boron concentration as the target makeup water boron concentration.

[0080] S204. Based on the target boron concentration in the makeup water and the second makeup water volume required for the primary loop of the nuclear power plant, a secondary makeup water supply is carried out for the primary loop of the nuclear power plant.

[0081] In this embodiment of the invention, a first makeup water boron concentration is determined based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant. Based on the first makeup water boron concentration and the first makeup water volume, the primary loop of the nuclear power plant is initially makeuped, and the change in boron concentration between the primary loop boron concentration and the initial boron concentration is obtained. If the change in boron concentration is greater than a preset threshold, a second makeup water boron concentration is determined based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume, and this second makeup water boron concentration is used as the target makeup water boron concentration. Based on the target makeup water boron concentration and the second makeup water volume required for the primary loop of the nuclear power plant, a second makeup water operation is performed on the primary loop of the nuclear power plant. The technical solution of this embodiment determines the second makeup water boron concentration based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume. This improves the accuracy of the second makeup water boron concentration and, consequently, enhances the stability of the nuclear power plant core reactivity after secondary makeup water replenishment based on the second makeup water boron concentration as the target makeup water boron concentration.

[0082] Example 3

[0083] Figure 3 This is a structural diagram of a water replenishment device for the primary loop of a nuclear power plant provided in Embodiment 3 of the present invention. This embodiment is applicable to the situation of replenishing water for the primary loop of a nuclear power plant. The water replenishment device for the primary loop of the nuclear power plant can be implemented in hardware and / or software and specifically configured in electronic equipment, such as a server.

[0084] like Figure 3 The nuclear power plant primary loop makeup water device shown includes a first boron concentration determination module 301, a primary makeup water module 302, a target boron concentration determination module 303, and a secondary makeup water module 304.

[0085] The first boron concentration determination module 301 is used to determine the first makeup water boron concentration based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant.

[0086] The initial water replenishment module 302 is used to perform initial water replenishment on the primary loop of the nuclear power plant based on the first water replenishment boron concentration and the first water replenishment volume, and to obtain the change in boron concentration in the primary loop after the initial water replenishment compared with the initial boron concentration.

[0087] The target boron concentration determination module 303 is used to determine the second replenishment boron concentration based on the first replenishment boron concentration and the change in boron concentration if the change in boron concentration is greater than a preset threshold, and to use the second replenishment boron concentration as the target replenishment boron concentration.

[0088] The secondary water replenishment module 304 is used to replenish the primary circuit of a nuclear power plant with secondary water based on the target boron concentration and the required secondary water volume of the primary circuit.

[0089] In this embodiment of the invention, a first boron concentration determination module determines a first makeup water boron concentration based on the initial boron concentration, effective boron abundance, and unit boron abundance of the nuclear power plant's primary loop; an initial makeup water module performs an initial makeup water treatment on the nuclear power plant's primary loop based on the first makeup water boron concentration and the first makeup water volume, and obtains the change in boron concentration between the primary loop boron concentration after the initial makeup water treatment and the initial boron concentration; a target boron concentration determination module determines a second makeup water boron concentration based on the first makeup water boron concentration and the change in boron concentration if the change in boron concentration exceeds a preset threshold, and uses the second makeup water boron concentration as the target makeup water boron concentration; and a secondary makeup water module performs a secondary makeup water treatment on the nuclear power plant's primary loop based on the target makeup water boron concentration and the second makeup water volume required by the nuclear power plant's primary loop. The technical solution of this invention, if the change in boron concentration between the primary loop boron concentration after the first water replenishment and the initial boron concentration is greater than a preset threshold, then a second water replenishment boron concentration is determined, and this second water replenishment boron concentration is used as the target water replenishment boron concentration for secondary water replenishment of the nuclear power plant's primary loop. This can avoid abnormal boron concentration during water replenishment due to problems such as boron water proportioning equipment failure or pipeline valve leakage, which could lead to drastic changes in core reactivity after water replenishment, thus improving the stability of the nuclear power plant's core reactivity.

[0090] Optionally, the target boron concentration determination module 303 includes:

[0091] The second boron concentration determination unit is used to determine the second boron concentration of the makeup water based on the first makeup water boron concentration, the change in boron concentration, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume; wherein, the target makeup water volume is the sum of the first makeup water volume and the second makeup water volume.

[0092] Optionally, the second boron concentration determining unit includes:

[0093] The primary loop target boron concentration determination subunit is used to determine the primary loop target boron concentration based on the first makeup water boron concentration, the boron concentration change, the initial boron concentration, the first makeup water volume, the target makeup water volume, and the primary loop water volume.

[0094] The second boron concentration determination subunit is used to determine the second makeup water boron concentration based on the target boron concentration of the primary loop, the initial boron concentration, the target makeup water volume, and the primary loop water volume.

[0095] Optionally, a primary loop target boron concentration determination subunit is used specifically for:

[0096] The reference boron concentration is determined based on the first makeup water boron concentration, the initial boron concentration, the target makeup water volume, and the primary loop water volume; wherein, the reference boron concentration is the boron concentration after makeup water is added to the primary loop of the nuclear power plant based on the first makeup water boron concentration and the target makeup water volume.

[0097] The reference boron concentration change is determined based on the target water replenishment volume, the change in boron concentration, and the first water replenishment volume; wherein, the reference boron concentration change is the change in boron concentration between the reference boron concentration and the first boron concentration.

[0098] The difference between the reference boron concentration and the change in the reference boron concentration is determined as the target boron concentration for the primary loop.

[0099] Optionally, the device may also include:

[0100] The second target boron concentration determination module is used to determine the first replenishment boron concentration as the target replenishment boron concentration if the change in boron concentration is less than or equal to a preset threshold.

[0101] Optional, the secondary water replenishment module 304 includes:

[0102] The secondary water replenishment unit is used to set the target replenishment boron concentration and the second replenishment volume in the chemical control system to provide secondary water replenishment for the primary loop of the nuclear power plant.

[0103] The aforementioned water replenishment device for the primary circuit of a nuclear power plant can execute the water replenishment method for the primary circuit of a nuclear power plant provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the water replenishment method for the primary circuit of each nuclear power plant.

[0104] Example 4

[0105] Figure 4A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0106] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0107] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0108] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the water replenishment method for the primary loop of a nuclear power plant.

[0109] In some embodiments, the makeup water method for the primary loop of a nuclear power plant can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the makeup water method for the primary loop of the nuclear power plant described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the makeup water method for the primary loop of the nuclear power plant by any other suitable means (e.g., by means of firmware).

[0110] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0111] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0112] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0113] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0114] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0115] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0116] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0117] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for makeup water in the primary loop of a nuclear power plant, characterized in that, include: The first makeup water boron concentration is determined based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant. Based on the first makeup water boron concentration and the first makeup water volume, the primary loop of the nuclear power plant is first makeuped, and the change in boron concentration of the primary loop after the first makeup water is obtained between the initial boron concentration and the boron concentration. If the change in boron concentration is greater than a preset threshold, then a second boron concentration for replenishing water is determined based on the first replenishment boron concentration and the change in boron concentration, and the second replenishment boron concentration is used as the target replenishment boron concentration. If the change in boron concentration is less than or equal to a preset threshold, then the first replenishment boron concentration is taken as the target replenishment boron concentration. Based on the target boron concentration for makeup water and the second makeup water volume required for the primary loop of the nuclear power plant, a secondary makeup water supply is carried out for the primary loop of the nuclear power plant. The determination of the first makeup water boron concentration includes determining the product of the initial boron concentration and the effective boron abundance, and taking the ratio of the product to the unit boron abundance as the first makeup water boron concentration. The method further includes: The boron concentration for the second makeup water is determined using the following formula: ； Among them, CB value Indicates the boron concentration of the second makeup water; CB RCSvalue Indicates the target boron concentration in the primary loop; CB RCS V represents the initial boron concentration; blend V represents the target water replenishment volume; t This indicates the volume of water in the primary loop; The reference boron concentration is determined using the following formula: ； Among them, CB RCSnormal Indicates reference boron concentration; CB normal Indicates the boron concentration of the first makeup water; CB RCS V represents the initial boron concentration; blend V represents the target water replenishment volume; t This indicates the volume of water in the primary loop; The change in reference boron concentration is determined using the following formula: ； Among them, CB t V represents the change in reference boron concentration. blend Indicates the target water replenishment volume; CB x V represents the change in boron concentration; x Indicates the first water replenishment volume; The target boron concentration for the primary loop is determined using the following formula: ； Among them, CB RCSvalue Indicates the target boron concentration in the primary loop; CB RCSnormal Indicates reference boron concentration; CB t This indicates the change in reference boron concentration.

2. The method according to claim 1, characterized in that, The step of performing secondary makeup water on the primary circuit of the nuclear power plant based on the target makeup water boron concentration and the second makeup water volume required by the primary circuit of the nuclear power plant includes: The target boron concentration and the second makeup water volume are set in the chemical control system to perform secondary makeup water for the primary loop of the nuclear power plant.

3. A makeup water device for the primary loop of a nuclear power plant, characterized in that, include: The first boron concentration determination module is used to determine the first makeup water boron concentration based on the initial boron concentration, effective boron abundance, and unit boron abundance of the primary loop of the nuclear power plant. The initial water replenishment module is used to perform initial water replenishment on the primary loop of the nuclear power plant based on the first water replenishment boron concentration and the first water replenishment volume, and to obtain the change in boron concentration in the primary loop after the initial water replenishment compared with the initial boron concentration. The target boron concentration determination module is used to determine a second replenishment boron concentration based on the first replenishment boron concentration and the change in boron concentration if the change in boron concentration is greater than a preset threshold, and to use the second replenishment boron concentration as the target replenishment boron concentration. The second target boron concentration determination module is used to take the first replenishment boron concentration as the target replenishment boron concentration if the change in boron concentration is less than or equal to a preset threshold. The secondary water replenishment module is used to replenish the primary circuit of the nuclear power plant with secondary water according to the target replenishment boron concentration and the second replenishment volume required by the primary circuit of the nuclear power plant. Specifically, the first boron concentration determination module is used to determine the product of the initial boron concentration and the effective boron abundance, and to use the ratio of the product to the boron abundance of the unit as the first makeup water boron concentration. The target boron concentration determination module further includes a second boron concentration determination unit, used to determine the second makeup water boron concentration using the following formula: ； Among them, CB value Indicates the boron concentration of the second makeup water; CB RCSvalue Indicates the target boron concentration in the primary loop; CB RCS V represents the initial boron concentration; blend V represents the target water replenishment volume; t This indicates the volume of water in the primary loop; The second boron concentration determination unit further includes a primary loop target boron concentration determination subunit, used to determine a reference boron concentration using the following formula: ； Among them, CB RCSnormal Indicates reference boron concentration; CB normal Indicates the boron concentration of the first makeup water; CB RCS V represents the initial boron concentration; blend V represents the target water replenishment volume; t This indicates the volume of water in the primary loop; The change in reference boron concentration is determined using the following formula: ； Among them, CB t V represents the change in reference boron concentration. blend Indicates the target water replenishment volume; CB x V represents the change in boron concentration; x Indicates the first water replenishment volume; The target boron concentration for the primary loop is determined using the following formula: ； Among them, CB RCSvalue Indicates the target boron concentration in the primary loop; CB RCSnormal Indicates reference boron concentration; CB t This indicates the change in reference boron concentration.

4. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the water replenishment method for the primary loop of the nuclear power plant as described in any one of claims 1-2.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the water replenishment method for the primary circuit of a nuclear power plant as described in any one of claims 1-2.

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