Zinc injection control method and apparatus, zinc injection system, and computer device

Abstract

A zinc injection control method and apparatus, a zinc injection system, a computer device, a computer-readable storage medium, and a computer program product. The method comprises: controlling a zinc injection apparatus to perform zinc injection on a loop of a nuclear power plant at a preset zinc injection flow rate; acquiring a real-time zinc concentration and real-time parameters of a unit of the loop; and on the basis of the real-time zinc concentration, the real-time parameters of the unit of the loop and a standard concentration range, performing control on the zinc injection.

Description

Zinc injection control method, device, zinc injection system and computer equipment

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 2024101045376, filed on January 25, 2024, entitled “Zinc Injection Control Method, Device, Zinc Injection System and Computer Equipment,” the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of nuclear power plants, and in particular to a zinc injection control method, device, zinc injection system, computer equipment, computer-readable storage medium, and computer program product. Background Art

[0004] Zinc injection in the primary circuit of a nuclear power plant is a water chemistry control technology. By continuously injecting zinc acetate solution into the primary circuit of a nuclear power plant, it changes the morphology of the metal oxide layer in the primary circuit, reduces corrosion of primary circuit equipment and materials, and reduces the deposition of activated corrosion products in the coolant in the primary circuit materials. This, in turn, reduces the amount of radioactive cobalt deposited in the primary circuit materials and the primary circuit radiation field. The current chemical zinc injection technology used in the primary circuit of pressurized water reactor (PWR) units originated from boiling water reactor (BWR) units and is used to mitigate stress corrosion cracking and address intergranular corrosion and excessive radiation dose rates.

[0005] However, the current method of manually adjusting or manually calculating the zinc injection amount through tools such as metering pumps can easily lead to the zinc injection process in the primary circuit not being timely enough and the control of the zinc injection amount not being precise enough.

[0006] Summary of the Invention

[0007] According to various embodiments disclosed in the present application, a zinc injection control method, apparatus, zinc injection system, computer equipment, computer-readable storage medium, and computer program product are provided.

[0008] In a first aspect, the present application provides a zinc injection control method, the method comprising:

[0009] Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate;

[0010] Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit; and

[0011] The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the primary circuit and the standard concentration range.

[0012] In one embodiment, controlling zinc injection according to the real-time zinc concentration, the real-time parameters of the unit of the primary circuit and the standard concentration range includes:

[0013] Obtaining a change state of the primary circuit according to real-time parameters and historical parameters of the unit of the primary circuit;

[0014] The zinc injection is controlled according to the real-time zinc concentration, the changing state of the primary circuit and the standard concentration range.

[0015] In one embodiment, controlling the zinc injection according to the real-time zinc concentration, the changing state of the primary circuit and the standard concentration range includes:

[0016] Perform analysis based on the real-time zinc concentration and the standard concentration range to obtain a concentration analysis result;

[0017] The zinc injection is controlled based on the concentration analysis result and the changing state of the primary circuit.

[0018] In one embodiment, after performing analysis based on the real-time zinc concentration and the standard concentration range to obtain the concentration analysis result, the method further comprises:

[0019] When the concentration analysis result exceeds the standard concentration range, the frequency of obtaining the real-time zinc concentration is increased.

[0020] In one embodiment, the change state of the primary circuit includes a long-term change, the concentration analysis result includes a concentration that is too low, and controlling the zinc injection based on the concentration analysis result and the change state of the primary circuit includes:

[0021] When the change state of the primary circuit is a long-term change and the concentration analysis result shows that the concentration is too low, the zinc injection flow rate of the zinc injection device is controlled to increase.

[0022] In one embodiment, the change state of the primary circuit includes a long-term change, the concentration analysis result includes an excessively high concentration, and controlling the zinc injection based on the concentration analysis result and the change state of the primary circuit includes:

[0023] When the change state of the primary circuit is a long-term change and the concentration analysis result shows that the concentration is too high, the zinc injection flow rate of the zinc injection device is controlled to decrease.

[0024] In one embodiment, after controlling the zinc injection flow rate of the zinc injection device to decrease, the method further comprises:

[0025] Control the purification unit to increase the purification flow rate.

[0026] In one embodiment, after the control purification unit increases the purification flow rate, the method further includes:

[0027] Obtain purified zinc concentrations at least twice;

[0028] When it is determined according to the concentration of each purified zinc that the zinc concentration is on an upward trend, the zinc injection device is controlled to stop working.

[0029] In one embodiment, the change state of the primary circuit includes a short-term change, and the control of zinc injection based on the concentration analysis result and the change state of the primary circuit includes:

[0030] When the change state of the primary circuit is a short-term change, the frequency of obtaining the real-time zinc concentration is increased.

[0031] In one embodiment, before controlling the zinc injection device to inject zinc into the primary circuit at a preset zinc injection flow rate, the method further comprises:

[0032] Get the working status of the unit in one circuit;

[0033] judging whether the zinc injection device is operating according to the working status of the unit of the primary circuit;

[0034] When the zinc injection device is running, the step of controlling the zinc injection device to inject zinc into a circuit at a preset zinc injection flow rate is performed.

[0035] A zinc injection control device, comprising:

[0036] The zinc injection working module is used to control the zinc injection device to inject zinc into the primary circuit at a preset zinc injection flow rate;

[0037] A parameter acquisition module, used to obtain real-time zinc concentration and real-time parameters of the unit of the primary circuit;

[0038] The zinc injection regulating module is used to control the zinc injection according to the real-time zinc concentration, the real-time parameters of the unit of the primary circuit and the standard concentration range.

[0039] In one embodiment, the zinc injection regulation module is further used to:

[0040] Obtaining a change state of the primary circuit according to real-time parameters and historical parameters of the unit of the primary circuit;

[0041] The zinc injection is controlled according to the real-time zinc concentration, the changing state of the primary circuit and the standard concentration range.

[0042] In one embodiment, the zinc injection regulation module is further used to:

[0043] Perform analysis based on the real-time zinc concentration and the standard concentration range to obtain a concentration analysis result;

[0044] The zinc injection is controlled based on the concentration analysis result and the changing state of the primary circuit.

[0045] In one embodiment, the zinc injection regulation module is further used to:

[0046] When the concentration analysis result exceeds the standard concentration range, the frequency of obtaining the real-time zinc concentration is increased.

[0047] In one embodiment, the change state of the primary circuit includes a long-term change, the concentration analysis result includes a concentration that is too low, and the zinc injection adjustment module is further configured to:

[0048] When the change state of the primary circuit is a long-term change and the concentration analysis result shows that the concentration is too low, the zinc injection flow rate of the zinc injection device is controlled to increase.

[0049] In one embodiment, the change state of the primary circuit includes a long-term change, the concentration analysis result includes an excessively high concentration, and the zinc injection adjustment module is further configured to:

[0050] When the change state of the primary circuit is a long-term change and the concentration analysis result shows that the concentration is too high, the zinc injection flow rate of the zinc injection device is controlled to decrease.

[0051] In one embodiment, after controlling the zinc injection flow rate of the zinc injection device to decrease, the zinc injection regulating module is further configured to:

[0052] Control the purification unit to increase the purification flow rate.

[0053] In one embodiment, after the control purification unit increases the purification flow rate, the zinc injection adjustment module is further used to:

[0054] Obtain purified zinc concentrations at least twice;

[0055] When it is determined according to the concentration of each purified zinc that the zinc concentration is on an upward trend, the zinc injection device is controlled to stop working.

[0056] In one embodiment, the change state of the primary circuit includes a short-term change, and the zinc injection regulation module is further configured to:

[0057] When the change state of the primary circuit is a short-term change, the frequency of obtaining the real-time zinc concentration is increased.

[0058] In one embodiment, the device further comprises a zinc injection start-up module, wherein the zinc injection start-up module is configured to:

[0059] Get the working status of the unit in one circuit;

[0060] judging whether the zinc injection device is operating according to the working status of the unit of the primary circuit;

[0061] When the zinc injection device is running, the step of controlling the zinc injection device to inject zinc into a circuit at a preset zinc injection flow rate is performed.

[0062] A zinc injection system includes a zinc injection device, a controller and a concentration detection device. The controller is connected to the zinc injection device and the concentration detection device. The concentration detection device is used to obtain real-time zinc concentration and send it to the controller. The controller is used to implement the zinc injection control method described in each embodiment.

[0063] A computer device includes a memory and one or more processors, wherein the memory stores computer-readable instructions, and when the processor executes the computer-readable instructions, the following steps are implemented:

[0064] Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate;

[0065] Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit; and

[0066] The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the primary circuit and the standard concentration range.

[0067] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the following steps:

[0068] Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate;

[0069] Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit; and

[0070] The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the primary circuit and the standard concentration range.

[0071] A computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0072] Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate;

[0073] Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit;

[0074] The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the primary circuit and the standard concentration range.

[0075] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0077] FIG1 is a diagram illustrating an application environment of a zinc injection control method according to one or more embodiments;

[0078] FIG2 is a schematic flow chart of a zinc injection control method according to one or more embodiments;

[0079] FIG3 is a flow diagram of controlling the zinc injection step according to the real-time zinc concentration, the real-time parameters of the primary circuit unit, and the standard concentration range according to one or more embodiments;

[0080] FIG4 is a flow diagram of controlling the zinc injection step according to the real-time zinc concentration, the changing state of the primary circuit, and the standard concentration range according to one or more embodiments;

[0081] FIG5 is a flow chart illustrating a method for controlling the zinc injection step according to the real-time zinc concentration, the changing state of the primary circuit, and the standard concentration range according to one or more embodiments;

[0082] FIG6 is a flow diagram of controlling the zinc injection step according to the real-time zinc concentration, the changing state of the primary circuit, and the standard concentration range according to one or more embodiments;

[0083] FIG7 is a schematic flow diagram of controlling the zinc injection step according to the real-time zinc concentration, the changing state of the primary circuit, and the standard concentration range according to one or more embodiments;

[0084] FIG8 is a flow diagram of controlling the zinc injection step according to the real-time zinc concentration, the changing state of the primary circuit, and the standard concentration range according to one or more embodiments;

[0085] FIG9 is a schematic flow diagram of controlling the zinc injection step based on concentration analysis results and a change state of a primary circuit according to one or more embodiments;

[0086] FIG10 is a schematic flow diagram of controlling the zinc injection step according to the real-time zinc concentration, the changing state of the primary circuit, and the standard concentration range according to one or more embodiments;

[0087] FIG11 is a schematic flow chart of a zinc injection control method according to one or more embodiments;

[0088] FIG12 is a schematic structural diagram of a zinc injection system according to one or more embodiments;

[0089] FIG13 is a structural block diagram of a zinc injection control device according to one or more embodiments;

[0090] FIG14 is a diagram illustrating the internal structure of a computer device according to one or more embodiments. DETAILED DESCRIPTION

[0091] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0092] It will be understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor without departing from the scope of this application. The first resistor and the second resistor are both resistors, but they are not the same resistor.

[0093] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected circuits, modules, units, etc.

[0094] As used herein, the singular forms "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include," "comprising," "having," and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Furthermore, the term "and / or" as used in this specification includes any and all combinations of the relevant listed items.

[0095] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0096] A pressurized water reactor type nuclear power plant usually includes a primary circuit, a secondary circuit and a tertiary circuit. The primary circuit, the secondary circuit and the tertiary circuit of the pressurized water reactor nuclear power plant are isolated from each other and only serve for heat transfer.

[0097] For example, the primary circuit of a pressurized water reactor is the reactor coolant system, which consists of components such as the reactor pressure vessel, main pump, pressurizer and steam generator, and is located inside the containment vessel; the secondary circuit consists of components such as the steam generator, condensate pump, steam-water separator, steam turbine, steam condenser (or condenser); the tertiary circuit consists of auxiliary system equipment (BOP for short) including generators, water pumps, external evaporators and other auxiliary equipment.

[0098] The primary and secondary circuits exchange heat through steam generators, transferring the heat generated by nuclear fission sequentially to cool the various structures of the nuclear power plant. However, over years of operation, pressurized water reactor (PWR) nuclear power plants have inevitably experienced corrosion of circuit materials, particularly in the primary circuit. Experience with nuclear power plant operation and maintenance indicates that the primary circuit units of PWRs are frequently plagued by leaks and ruptures in the heat transfer tubes of the steam generator tubes. These heat transfer tubes are thinner than other components of the primary circuit units, and they carry radioactive water from the primary circuit. A ruptured heat transfer tube not only causes a reactor dehydration shutdown but also leaks radioactive water into the secondary circuit, resulting in nuclear contamination.

[0099] Therefore, following the zinc injection technology of boiling water reactor units, hydrochemical zinc injection technology is also used to protect the primary circuit materials of the primary circuit to alleviate intergranular corrosion and stress corrosion cracking of component materials. The present application provides a zinc injection control method for achieving zinc injection control in the primary circuit of a nuclear power plant. Through precise zinc injection, the protection effect of the primary circuit unit is improved, the service life of the unit is extended, and the safety of the nuclear power plant is increased.

[0100] The zinc injection control method provided in the embodiments of the present application can be applied in the application environment shown in FIG1 . A controller 104 is connected to a zinc injection device 102 and a primary circuit 106 , which is then connected to the primary circuit 106 . The controller 104 controls the zinc injection device 102 to inject zinc into the primary circuit 106 . The zinc injection process is controlled according to the zinc injection control methods described in the following embodiments. The controller 104 can be, but is not limited to, various personal computers, laptop computers, smartphones, and tablet computers.

[0101] In an exemplary embodiment, as shown in FIG2 , a zinc injection control method is provided. The method is described by taking the controller 104 in FIG1 as an example, and includes the following steps 202 to 206 .

[0102] Step 202: Control the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate.

[0103] The zinc injection device is an output device for injecting zinc into the primary circuit of a nuclear power plant. It can deliver a prepared zinc solution to the primary circuit of the nuclear power plant. By replenishing zinc, it reduces the radiation field and forms a more corrosion-resistant corrosion film to protect the primary circuit of the nuclear power plant.

[0104] Specifically, the controller can control the zinc injection device to inject zinc into the primary circuit of the nuclear power plant. To ensure that the injected zinc solution forms a sufficient corrosion film to protect the primary circuit of the nuclear power plant, the controller stores a preset zinc injection flow rate. This preset zinc injection flow rate is a manually set injection flow rate that can be freely set by staff based on factors such as the service life of the primary circuit of the nuclear power plant and the degree of corrosion. When the zinc injection device is first started to inject zinc, the controller controls the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at the preset zinc injection flow rate.

[0105] Optionally, the zinc injection device may include a zinc injection tank and a zinc injection pump. The zinc injection tank is used to store a zinc-containing solution, such as a zinc acetate solution. The zinc injection pump is used to pump the zinc-containing solution into the primary circuit of the nuclear power plant. Optionally, the number of zinc injection devices and zinc injection pumps is not limited. Multiple zinc injection devices and zinc injection pumps may be provided for redundancy to ensure the reliability of the zinc injection process.

[0106] Step 204: Acquire the real-time zinc concentration and the real-time parameters of the primary circuit unit.

[0107] The primary circuit units of a nuclear power plant are responsible for generating electricity and include key components of the plant, such as the reactor. A controller is connected to the primary circuit units to obtain real-time parameters of the primary circuit units. The controller can also obtain real-time zinc concentration, which is the real-time zinc concentration in the primary circuit. The controller can obtain this real-time zinc concentration directly or through a concentration detection device.

[0108] Step 206: Control zinc injection according to the real-time zinc concentration, the real-time parameters of the primary circuit unit, and the standard concentration range.

[0109] Specifically, a standard concentration range is stored in the controller, which is used for comparison with the real-time zinc concentration. The controller analyzes whether the current zinc concentration of the unit in the primary circuit is normal based on the comparison result between the real-time zinc concentration and the standard concentration range and the real-time parameters of the unit in the primary circuit, and controls the zinc injection accordingly based on the analysis result, and adjusts the zinc injection process so that the zinc concentration in the primary circuit meets the requirements, that is, is within the standard concentration range.

[0110] Exemplarily, the standard concentration range includes an upper threshold and a lower threshold. When the real-time zinc concentration is greater than the upper threshold or less than the lower threshold, the real-time zinc concentration is not within the standard concentration range. When the real-time zinc concentration is less than or equal to the upper threshold and greater than or equal to the lower threshold, the real-time zinc concentration is within the standard concentration range.

[0111] In one embodiment, as shown in FIG. 3 , step 206 includes steps 302 to 304 .

[0112] Step 302: Obtain the change state of the primary circuit according to the real-time parameters and historical parameters of the units of the primary circuit.

[0113] The historical parameters are the parameters of the primary circuit unit at various historical moments. Different components within the primary circuit unit have different historical parameters. The historical parameters can be the parameters of the primary circuit unit recorded at various operating moments in the current operation, or they can be obtained by integrating and analyzing the historical parameters of multiple units with the same model and operating conditions as the primary circuit unit over multiple runs.

[0114] Specifically, the controller stores historical parameters of the primary circuit's units. The controller analyzes the acquired real-time parameters of the primary circuit's units against the historical parameters to determine the primary circuit's changing state. This analysis can be performed by comparing the real-time parameters of the current operation with historical parameters from the same period in multiple previous operations. Alternatively, the analysis can be performed by comparing the real-time parameters of the primary circuit's units in the current operation with parameters from a previous moment or multiple previous moments in the current operation. The primary circuit's changing state is determined based on an error analysis between the real-time and historical parameters.

[0115] Optionally, the changing state of a circuit may include long-term changes and short-term changes. When the real-time parameters are relatively matched with the historical parameters and the error is small, the unit representing the circuit has not undergone a sudden change in parameters, and the changing state of the circuit is a long-term change. For example, the change in real-time parameters caused by the gradual change in the working conditions of the unit in the circuit during operation, the slow change process from full power to zero power during power operation. When the error between the real-time parameters and the historical parameters is large and there is a sudden change, the parameters in the unit representing the circuit have been interfered with and adjusted, which may be a change in the real-time parameters caused by the operation of the staff. At this time, the changing state of a circuit is a short-term change, such as power regulation and load shedding.

[0116] Step 304 , controlling zinc injection according to the real-time zinc concentration, the changing state of the primary circuit and the standard concentration range.

[0117] Specifically, the controller analyzes whether the current zinc concentration of the unit in the primary circuit is normal based on the comparison results between the real-time zinc concentration and the standard concentration range and the changing status of the primary circuit, and controls the zinc injection accordingly based on the analysis results, adjusts the zinc injection process, so that the zinc concentration in the primary circuit meets the requirements, and improves the control accuracy of the zinc injection process.

[0118] The controller performs analysis based on the real-time zinc concentration and the standard concentration range. In one embodiment, as shown in FIG. 4 , step 304 includes steps 402 and 404 .

[0119] Step 402: Analyze the real-time zinc concentration and the standard concentration range to obtain a concentration analysis result.

[0120] The standard concentration range can be a fixed concentration range or a range that varies based on the operating conditions of the primary circuit units. It can be set as needed. The standard concentration range includes an upper threshold and a lower threshold. When the real-time zinc concentration is less than or equal to the upper threshold and greater than or equal to the lower threshold, the real-time zinc concentration is within the standard concentration range. When the real-time zinc concentration is greater than the upper threshold, the real-time zinc concentration is outside the standard concentration range and is too high. When the real-time zinc concentration is less than the lower threshold, the real-time zinc concentration is outside the standard concentration range and is too low.

[0121] Specifically, the controller compares the real-time zinc concentration with the standard concentration range to determine whether it is within the standard concentration range. If the real-time zinc concentration is not within the standard concentration range, it also determines whether the real-time zinc concentration is too high or too low. This results in a concentration analysis result: too high, normal, or too low.

[0122] Step 404 : Control zinc injection based on the concentration analysis result and the changing state of the primary circuit.

[0123] Because the changing state of the primary circuit also affects the real-time zinc concentration data, relying solely on concentration analysis results to control zinc injection is not accurate enough. The controller controls zinc injection based on the concentration analysis results combined with the changing state of the primary circuit, effectively adjusting zinc injection according to the actual needs of the primary circuit.

[0124] In this embodiment, the zinc injection control method includes controlling a zinc injection device to inject zinc into the primary circuit of a nuclear power plant at a preset zinc injection flow rate, obtaining a real-time zinc concentration and real-time parameters of the primary circuit's units, and controlling the zinc injection based on the real-time zinc concentration, the real-time parameters of the primary circuit's units, and a standard concentration range. By controlling the zinc injection accordingly based on the real-time parameters of the primary circuit's units, the zinc injection device is combined with the parameters of the primary circuit's units, and zinc injection control is performed accordingly for the primary circuit's units under different circumstances. This allows for precise control of the zinc injection amount, tailored to the zinc content requirements of the primary circuit.

[0125] In one embodiment, as shown in FIG. 5 , step 402 includes step 502 : when the concentration analysis result exceeds the standard concentration range, increasing the frequency of obtaining the real-time zinc concentration.

[0126] Concentration analysis results outside the standard concentration range could indicate excessively high or low concentrations. When the concentration analysis results exceed the standard concentration range, it's unclear whether the abnormal zinc concentration is caused by changes in the primary circuit, and adjustments to the zinc injection system are premature. To ensure the stability and reliability of zinc injection control, the controller will increase the frequency of real-time zinc concentration acquisition, acquiring more zinc concentration data for analysis and facilitating subsequent zinc injection control.

[0127] Optionally, the real-time zinc concentration can be obtained by the controller from the concentration detection device. Increasing the frequency of obtaining the real-time zinc concentration can be achieved by the controller collecting the zinc concentration in the concentration detection device more frequently, or by controlling the concentration detection device to increase the detection frequency and transmitting it to the controller accordingly.

[0128] In this embodiment, by increasing the frequency of collecting the real-time zinc concentration, the change of the zinc concentration can be more closely acquired, the accuracy of the real-time zinc concentration is improved, and the subsequent zinc injection adjustment is made more accurate and reliable.

[0129] In one embodiment, the change state of the primary circuit includes a long-term change and the concentration analysis result includes a concentration that is too low. As shown in FIG6 , step 404 includes step 602 : when the change state of the primary circuit is a long-term change and the concentration analysis result indicates that the concentration is too low, controlling the zinc injection device to increase the zinc injection flow rate.

[0130] Specifically, if the primary circuit's changing state is long-term and the concentration analysis result indicates that the concentration is too low, the controller analyzes that no sudden parameter changes have occurred in the primary circuit's units and the real-time zinc concentration is low, indicating that zinc replenishment is necessary. The controller can then control the zinc injection device to increase the zinc injection flow rate to replenish the primary circuit and ensure stable operation of the primary circuit. Specifically, the controller controls the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc replenishment flow rate, which is greater than the preset zinc injection flow rate.

[0131] In practice, the concentration analysis results may vary. In one embodiment, the change state of the primary circuit includes a long-term change, and the concentration analysis result indicates that the concentration is too high. As shown in FIG7 , step 404 includes step 702: When the change state of the primary circuit indicates a long-term change and the concentration analysis result indicates that the concentration is too high, controlling the zinc injection flow rate of the zinc injection device to decrease.

[0132] Specifically, when the changing state of a circuit is a long-term change and the concentration analysis result shows that the concentration is too high, the controller analyzes that no parameter mutation occurs in the unit of the circuit, and the real-time zinc concentration value is high, and it is necessary to perform an operation to reduce the zinc content for the circuit. The controller can reduce the zinc content for the circuit by controlling the zinc injection flow rate of the zinc injection device to decrease, thereby ensuring the stable operation of the circuit. The specific operation is to control the zinc injection device to inject zinc into the circuit of the nuclear power plant at a preset zinc reduction flow rate, and the preset zinc reduction flow rate is greater than the preset zinc injection flow rate. The preset zinc supplement flow rate and the preset zinc reduction flow rate in the embodiment can both be formulated by the staff. In the present embodiment, the zinc content is reduced by reducing the zinc injection flow rate of the zinc injection device, thereby achieving accurate regulation of the zinc concentration.

[0133] The device for reducing zinc content that can be controlled by the controller is not limited to the zinc injection device. In one embodiment, as shown in FIG8 , after controlling the zinc injection flow rate of the zinc injection device to reduce in step 702 , the process further includes step 802 : controlling the purification unit to increase the purification flow rate.

[0134] The controller is also connected to a purification unit, which can inject a non-zinc-containing liquid into the primary circuit to reduce the real-time zinc concentration in the primary circuit. This non-zinc-containing liquid can be pure water or other liquids that do not contain zinc and do not react with zinc. The purification unit is one of the components of the chemical and volume control system (RCV system). The RCV system is an auxiliary system in the reactor coolant system, used to inject liquid into the primary circuit. The difference between the RCV system and the zinc injection device is that the liquid transmitted by the RCV system is mainly used for cooling and does not contain zinc, while the zinc solution in the zinc injection device is mainly used for corrosion prevention and protection of primary circuit components.

[0135] Specifically, after controlling the zinc injection device to reduce the zinc injection flow rate, the controller can also control the purification unit to increase the purge flow rate. The purge flow rate refers to the injection rate of non-zinc-containing liquid into the purification unit. Increasing the purge flow rate can further reduce the zinc concentration, allowing the real-time zinc concentration to drop to the standard concentration range more quickly.

[0136] In order to timely detect and adjust the zinc injection control to avoid potential safety hazards caused by zinc concentration fluctuations, in one embodiment, as shown in FIG9 , step 802 further includes steps 902 and 904 .

[0137] Step 902: Obtain the purified zinc concentration at least twice.

[0138] The controller obtains the zinc concentration again. At this point, the zinc injection flow rate has already been reduced and the purge flow rate has been increased. This zinc concentration is called the purified zinc concentration. To ensure the reliability of the purified zinc concentration, the controller needs to obtain at least two purified zinc concentrations and then analyze each purified zinc concentration.

[0139] For example, the controller analyzes each purified zinc concentration by calculating an average value of each purified zinc concentration and comparing the average value with a standard concentration range. Other analysis processes may also be used.

[0140] Step 904: When it is determined based on the concentrations of each purified zinc that the zinc concentration is on an upward trend, the zinc injection device is controlled to stop working.

[0141] Specifically, the controller analyzes each purified zinc concentration, arranges each purified zinc concentration according to the acquisition time, and analyzes the sequence obtained after the arrangement. When the values ​​in the sequence are decreasing in sequence, or each subsequent item is less than or equal to the previous item, it can be determined that the zinc concentration is in a downward trend. When the values ​​in the sequence are increasing in sequence, or each subsequent item is greater than or equal to the previous item, it can be determined that the zinc concentration is in an upward trend. When the values ​​in the sequence show wavy fluctuations, that is, when the values ​​in the sequence have both the previous item greater than the next item and the previous item less than the next item, it can be determined that the zinc concentration is in a fluctuating trend.

[0142] If the controller determines that the zinc concentration is on an upward trend, it indicates that the measures of reducing the zinc injection flow rate and increasing the purification flow rate have not had a corresponding effect on the zinc concentration, posing a safety hazard. The controller then needs to control the zinc injection device to stop operating. Alternatively, if the controller determines that the zinc concentration is on a downward trend, it indicates that the measures of reducing the zinc injection flow rate and increasing the purification flow rate have taken effect. The controller can return to step 204 to continue monitoring the real-time zinc concentration. If the controller determines that the zinc concentration is on a fluctuating trend, step 902 can be repeated to maintain continuous monitoring of the purified zinc concentration.

[0143] The change state of a circuit also includes short-term changes. In one embodiment, as shown in FIG10 , before step 404 , step 1002 is further included: when the change state of a circuit is a short-term change, the acquisition frequency of the real-time zinc concentration is increased.

[0144] When real-time parameters differ significantly from historical parameters or experience sudden changes, this indicates that interference has occurred in the parameters of the primary circuit's units. This change in real-time parameters may be caused by operator manipulation. In this case, the primary circuit's changing state is short-term, such as power regulation or load shedding.

[0145] Specifically, when the primary circuit's state changes for a short period, the controller determines that the real-time zinc concentration acquired at this time will be affected by the primary circuit's state, thus reducing the reliability of the acquired real-time zinc concentration. To ensure the reliability of the real-time zinc concentration, the frequency of acquiring the real-time zinc concentration needs to be increased.

[0146] For example, the short-term change may be due to power adjustment. Further, when the concentration analysis result shows that the concentration is too high, when the staff needs to adjust the power, it is necessary to control the zinc injection device to stop working before performing the power adjustment.

[0147] Furthermore, the concentration analysis result obtained based on the real-time zinc concentration and the standard concentration range also includes a concentration exceeding the limit. That is, the standard concentration range not only includes an upper threshold value and a lower threshold value, but also includes a danger warning value, which is greater than the upper threshold value. When the real-time zinc concentration is greater than the upper threshold value and less than or equal to the danger warning value, the real-time zinc concentration is not within the standard concentration range and the concentration is too high. When the real-time zinc concentration is greater than the danger warning value, the real-time zinc concentration is not within the standard concentration range and the concentration exceeds the limit. When the concentration analysis result is that the concentration exceeds the limit, the controller controls the zinc injection device to stop working and the purification unit to increase the purification flow rate, while increasing the frequency of obtaining the real-time zinc concentration.

[0148] Furthermore, when the controller is executing any zinc injection control in this application, if the RCV system signal of the purification unit connected to the controller is abnormal or the signal is lost, the controller will control the zinc injection device to stop working.

[0149] In the above embodiment, by analyzing the changing state and concentration analysis results of the primary circuit and taking them as an important basis for zinc injection control, the zinc injection control is improved in intelligence, speed and accuracy. The zinc injection device or other related systems (such as the RCV system) are controlled accordingly to change the zinc concentration in the primary circuit, thereby realizing zinc injection control of the primary circuit and ensuring the safety and reliability of the primary circuit.

[0150] In one embodiment, as shown in FIG11 , before step 202 , steps 1102 and 1104 are also included.

[0151] Step 1102: Obtain the operating status of the units in the primary circuit.

[0152] When the primary circuit is performing power generation, it can be divided into multiple operating states, referred to as the operating state of the primary circuit unit. Exemplarily, these include the hot test period, the operation period, and the shutdown period. The controller obtains the operating state of the primary circuit to execute step 1104: determining whether the zinc injection device is operating based on the operating state of the primary circuit unit.

[0153] Specifically, the zinc injection device is controlled accordingly based on the operating status of the different primary-circuit units, so that the operation of the zinc injection device is integrated and matched with the operation of the primary-circuit units, improving the fit between the zinc injection control and the operating status of the primary-circuit units and providing more accurate zinc concentration adjustment. When it is determined that the zinc injection device is operational, step 202 is executed.

[0154] For example, when the working state of the unit of the primary circuit is during the hot test period, the zinc injection device is started after the upstream residual heat removal system (a system in the nuclear power plant) of the unit of the primary circuit is shut down, and the zinc injection device is controlled to stop working after the passivation is completed but before the boronization. When the working state of the unit of the primary circuit is during the operation period, the zinc injection device is not started during the startup period within the operation period, and the zinc injection device is started during the power operation period within the operation period. When the working state of the unit of the primary circuit is during the shutdown period, the zinc injection device is controlled to reduce the zinc injection flow rate about 72 hours before the start of power reduction during the shutdown period, and the zinc injection device is controlled to stop working at least about 24 hours before the complete shutdown.

[0155] Based on the same technical concept, the present application also provides a zinc injection system. In one embodiment, as shown in FIG12 , the zinc injection system includes a zinc injection device 102, a controller 104, and a concentration detection device 108. Controller 104 is connected to zinc injection device 102 and concentration detection device 108. Concentration detection device 108 is used to obtain the real-time zinc concentration of a primary circuit 106 of the nuclear power plant and transmit it to controller 104. Controller 104 controls zinc injection device 102 to inject zinc into primary circuit 106.

[0156] Specifically, the zinc injection device 102 injects zinc into the primary circuit 106 of the nuclear power plant. The concentration detection device 108 is used to detect the zinc concentration in the primary circuit 106 of the nuclear power plant. The controller 104 connects the concentration detection device 108 and the primary circuit 106 of the nuclear power plant to control the zinc injection of the zinc injection device 102. The zinc injection device 102 includes a zinc injection pump and a zinc injection tank. Each zinc injection tank is equipped with two zinc injection pumps. The zinc injection pumps are configured in a redundant manner, one for use and one for backup, thereby improving the utilization rate of the zinc injection device.

[0157] Furthermore, the zinc injection tank is equipped with a level gauge connected to controller 104 to monitor the tank's liquid level, facilitating monitoring of the tank's status. Controller 104 generates alarms when the liquid level is abnormal. When the liquid level falls below a first threshold, an alarm is triggered, prompting replenishment of liquid; when the liquid level falls below a second threshold, an alarm is triggered and the zinc injection device 102 is stopped. The level gauge also provides an on-site display, allowing staff to instantly read the amount of medication being added during the dispensing process, ensuring the desired concentration is met.

[0158] A flow meter can be installed at the outlet of the zinc injection pump to detect the injection flow rate. A safety valve and a solenoid valve can also be installed in the primary circuit 106. The controller 104 detects the status of the safety valve and the solenoid valve, further obtaining the operating status of the primary circuit 106 and the real-time parameters of the primary circuit 106 unit. When the safety valve is opened, the controller 104 can generate an alarm to notify the operator that the pressure has exceeded a threshold.

[0159] In order to better understand the above solution, in combination with the application scenario shown in FIG12 , a detailed explanation is given below in combination with an embodiment.

[0160] In one embodiment, a zinc injection system includes a zinc injection device, a controller, and a concentration detection device. The controller is connected to the zinc injection device and the concentration detection device. The concentration detection device is used to obtain the real-time zinc concentration of the primary circuit of the nuclear power plant and transmit it to the controller. The controller controls the zinc injection device to inject zinc into the primary circuit, and the injection solution is a zinc acetate solution. The zinc injection device includes a zinc injection pump and a zinc injection tank. Each zinc injection tank is equipped with two zinc injection pumps, and the zinc injection pumps are configured in a redundant manner, one for use and one for backup, thereby improving the utilization rate of the zinc injection device. A liquid level gauge connected to the controller is provided in the zinc injection tank for detecting the liquid level in the zinc injection tank. A flow meter can be provided at the outlet of the zinc injection pump for detecting the injection flow rate. A safety valve and a solenoid valve can also be provided in the primary circuit. The controller detects the status of the safety valve and the solenoid valve to further obtain the operating status of the primary circuit and the real-time parameters of the primary circuit unit. When the containment of the primary circuit is isolated, the downflow pipeline is isolated, and the purification unit is bypassed, the controller closes the zinc injection isolation valve and stops the zinc injection pump. The controller can be a control cabinet with an independent power supply design. Even if the DCS (Distributed Control System) control power fails, it can still ensure the realization of some local control functions.

[0161] The controller obtains the working status of the unit of the first circuit, and determines whether the zinc injection device is in operation according to the working status of the unit of the first circuit. When the working status of the unit of the first circuit is during the hot test, the zinc injection device is started after the upward residual heat removal system (a system in the nuclear power plant) of the unit of the first circuit is exited, and the zinc injection device is controlled to stop working before the passivation is completed and the boronization. When the working status of the unit of the first circuit is during operation, the zinc injection device is not started during the startup period within the operation period, and the zinc injection device is started during the power operation period during the operation period. When the working status of the unit of the first circuit is during the shutdown period, the zinc injection device is controlled to reduce the zinc injection flow rate about 72 hours before the power reduction starts during the shutdown period, and the zinc injection device is controlled to stop working at least about 24 hours before the complete shutdown. The following is an explanation of the operation of the zinc injection device.

[0162] The zinc injection device is controlled to inject zinc into the primary circuit of a nuclear power plant at a preset zinc injection flow rate. The device obtains the real-time zinc concentration and the real-time parameters of the primary circuit's units. Based on the real-time and historical parameters of the primary circuit's units, the primary circuit's changing state is determined. The real-time zinc concentration is analyzed against a standard concentration range to obtain a concentration analysis result. If the concentration analysis result exceeds the standard concentration range, the frequency of obtaining the real-time zinc concentration is increased. The controller then controls the zinc injection based on the concentration analysis result and the primary circuit's changing state.

[0163] The steps for controlling zinc injection are not unique, and include: when the change state of a circuit is a short-term change, increasing the frequency of obtaining the real-time zinc concentration. When the change state of a circuit is a long-term change, the concentration analysis result shows that the concentration is too low, and the zinc injection flow rate of the zinc injection device is controlled to increase. When the change state of a circuit is a long-term change, the concentration analysis result shows that the concentration is too high, and the zinc injection flow rate of the zinc injection device is controlled to decrease. The purification unit is controlled to increase the purification flow rate, and the purified zinc concentration is obtained at least twice. When the zinc concentration is judged to be on an upward trend based on each purified zinc concentration, the zinc injection device is controlled to stop working. When the concentration analysis result shows that the concentration exceeds the limit, the controller controls the zinc injection device to stop working and the purification unit to increase the purification flow rate, and at the same time increases the frequency of obtaining the real-time zinc concentration.

[0164] In this embodiment, by continuously injecting zinc acetate solution into the primary circuit of the nuclear power plant, the morphology of the metal oxide layer in the primary circuit is changed, the corrosion of the equipment materials in the primary circuit is reduced, and the deposition of activated corrosion products in the coolant in the materials of the primary circuit is reduced, thereby reducing the amount of radioactive cobalt deposited in the materials of the primary circuit and reducing the radiation field of the primary circuit, which can significantly reduce the cost of radiation protection and waste disposal.

[0165] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above 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 to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0166] Based on the same inventive concept, embodiments of the present application further provide a zinc injection control device for implementing the aforementioned zinc injection control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations in one or more embodiments of the zinc injection control device provided below can be found in the above-described limitations on the zinc injection control method and will not be further elaborated here.

[0167] In an exemplary embodiment, as shown in FIG13 , a zinc injection control device is provided, comprising: a zinc injection working module 620 , a parameter acquisition module 640 and a zinc injection adjustment module 660 , wherein:

[0168] The zinc injection working module 620 is used to control the zinc injection device to inject zinc into the primary circuit at a preset zinc injection flow rate.

[0169] The parameter acquisition module 640 is used to obtain the real-time zinc concentration and the real-time parameters of the primary circuit unit.

[0170] The zinc injection regulating module 660 is used to control the zinc injection according to the real-time zinc concentration, the real-time parameters of the primary circuit unit and the standard concentration range.

[0171] In one embodiment, the zinc injection adjustment module 660 is further used to obtain the change state of the primary circuit according to the real-time parameters and historical parameters of the primary circuit unit, and control the zinc injection according to the real-time zinc concentration, the change state of the primary circuit and the standard concentration range.

[0172] In one embodiment, the zinc injection adjustment module 660 is further configured to analyze the real-time zinc concentration and the standard concentration range to obtain a concentration analysis result, and control the zinc injection based on the concentration analysis result and the change state of the primary circuit.

[0173] In one embodiment, the zinc injection adjustment module 660 is further configured to increase the frequency of obtaining the real-time zinc concentration when the concentration analysis result exceeds the standard concentration range after analyzing the real-time zinc concentration and the standard concentration range to obtain the concentration analysis result.

[0174] In one embodiment, the change state of a circuit includes a long-term change, and the concentration analysis result includes that the concentration is too low. The zinc injection adjustment module 660 is also used to control the zinc injection flow rate of the zinc injection device to increase when the change state of a circuit is a long-term change and the concentration analysis result is that the concentration is too low.

[0175] In one embodiment, the change state of a circuit includes a long-term change, and the concentration analysis result includes that the concentration is too high. The zinc injection adjustment module 660 is also used to control the zinc injection flow rate of the zinc injection device to reduce when the change state of a circuit is a long-term change and the concentration analysis result is that the concentration is too high.

[0176] In one embodiment, the zinc injection regulating module 660 is further configured to control the purification unit to increase the purification flow rate after controlling the zinc injection flow rate of the zinc injection device to decrease.

[0177] In one embodiment, the zinc injection adjustment module 660 is further configured to obtain the purified zinc concentration at least twice after controlling the purification unit to increase the purification flow rate, and control the zinc injection device to stop working when it is determined that the zinc concentration is on an upward trend according to each purified zinc concentration.

[0178] In one embodiment, the change state of the primary circuit includes short-term changes. The zinc injection adjustment module 660 is further used to increase the frequency of obtaining real-time zinc concentration when the change state of the primary circuit is a short-term change before controlling zinc injection based on the concentration analysis result and the change state of the primary circuit.

[0179] In one embodiment, the zinc injection control further includes a zinc injection start module configured to obtain the operating status of the primary circuit's units before the zinc injection operation module 620 controls the zinc injection device to inject zinc into the primary circuit at a preset zinc injection flow rate, and to determine whether the zinc injection device is operating based on the operating status of the primary circuit's units. When the zinc injection device is operating, the zinc injection operation module 620 controls the zinc injection device to inject zinc into the primary circuit at the preset zinc injection flow rate.

[0180] Each module in the zinc injection control device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module 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 the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0181] In an exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be shown in Figure 14. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via 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 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 via wired or wireless communication, and the wireless communication may be achieved via Wi-Fi, a mobile cellular network, NFC (near field communication), or other technologies. When the computer program is executed by the processor, a zinc injection control method is implemented. The display unit of the computer device is used to form a visually visible image, and may 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 casing, or an external keyboard, touchpad or mouse.

[0182] Those skilled in the art will understand that the structure shown in FIG14 is merely a block diagram of a portion 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 shown in the figure, or combine certain components, or have a different arrangement of components.

[0183] 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:

[0184] Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate;

[0185] Obtain real-time zinc concentration and real-time parameters of the primary circuit unit;

[0186] Zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the primary circuit unit and the standard concentration range.

[0187] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0188] The changing state of the primary circuit is obtained according to the real-time parameters and historical parameters of the primary circuit unit, and the zinc injection is controlled according to the real-time zinc concentration, the changing state of the primary circuit and the standard concentration range.

[0189] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0190] Analyze the real-time zinc concentration and the standard concentration range to obtain the concentration analysis results. Based on the concentration analysis results and the changing status of the primary circuit, zinc injection is controlled.

[0191] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0192] When the concentration analysis result exceeds the standard concentration range, increase the frequency of obtaining real-time zinc concentration.

[0193] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0194] When the changing state of a circuit is a long-term change and the concentration analysis result shows that the concentration is too low, the zinc injection flow rate of the zinc injection device is controlled to increase.

[0195] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0196] When the changing state of a circuit is a long-term change and the concentration analysis result shows that the concentration is too high, the zinc injection flow rate of the zinc injection device is controlled to be reduced.

[0197] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0198] Control the purification unit to increase the purification flow rate.

[0199] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0200] The purified zinc concentration is obtained at least twice. When it is judged that the zinc concentration is on an upward trend according to each purified zinc concentration, the zinc injection device is controlled to stop working.

[0201] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0202] When the change state of a circuit is a short-term change, the frequency of obtaining the real-time zinc concentration is increased.

[0203] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0204] The working status of the unit of the primary circuit is obtained, and whether the zinc injection device is operating is determined according to the working status of the unit of the primary circuit. When the zinc injection device is operating, the step of controlling the zinc injection device to inject zinc into the primary circuit at a preset zinc injection flow rate is executed.

[0205] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0206] Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate;

[0207] Obtain real-time zinc concentration and real-time parameters of the primary circuit unit;

[0208] Zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the primary circuit unit and the standard concentration range.

[0209] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0210] The changing state of the primary circuit is obtained according to the real-time parameters and historical parameters of the primary circuit unit, and the zinc injection is controlled according to the real-time zinc concentration, the changing state of the primary circuit and the standard concentration range.

[0211] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0212] Analyze the real-time zinc concentration and the standard concentration range to obtain the concentration analysis results. Based on the concentration analysis results and the changing status of the primary circuit, zinc injection is controlled.

[0213] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0214] When the concentration analysis result exceeds the standard concentration range, increase the frequency of obtaining real-time zinc concentration.

[0215] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0216] When the changing state of a circuit is a long-term change and the concentration analysis result shows that the concentration is too low, the zinc injection flow rate of the zinc injection device is controlled to increase.

[0217] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0218] When the changing state of a circuit is a long-term change and the concentration analysis result shows that the concentration is too high, the zinc injection flow rate of the zinc injection device is controlled to be reduced.

[0219] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0220] Control the purification unit to increase the purification flow rate.

[0221] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0222] The purified zinc concentration is obtained at least twice. When it is judged that the zinc concentration is on an upward trend according to each purified zinc concentration, the zinc injection device is controlled to stop working.

[0223] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0224] When the change state of a circuit is a short-term change, the frequency of obtaining the real-time zinc concentration is increased.

[0225] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0226] The working status of the unit of the primary circuit is obtained, and whether the zinc injection device is operating is determined according to the working status of the unit of the primary circuit. When the zinc injection device is operating, the step of controlling the zinc injection device to inject zinc into the primary circuit at a preset zinc injection flow rate is executed.

[0227] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0228] Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate;

[0229] Obtain real-time zinc concentration and real-time parameters of the primary circuit unit;

[0230] Zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the primary circuit unit and the standard concentration range.

[0231] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0232] The changing state of the primary circuit is obtained according to the real-time parameters and historical parameters of the primary circuit unit, and the zinc injection is controlled according to the real-time zinc concentration, the changing state of the primary circuit and the standard concentration range.

[0233] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0234] Analyze the real-time zinc concentration and the standard concentration range to obtain the concentration analysis results. Based on the concentration analysis results and the changing status of the primary circuit, zinc injection is controlled.

[0235] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0236] When the concentration analysis result exceeds the standard concentration range, increase the frequency of obtaining real-time zinc concentration.

[0237] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0238] When the changing state of a circuit is a long-term change and the concentration analysis result shows that the concentration is too low, the zinc injection flow rate of the zinc injection device is controlled to increase.

[0239] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0240] When the changing state of a circuit is a long-term change and the concentration analysis result shows that the concentration is too high, the zinc injection flow rate of the zinc injection device is controlled to be reduced.

[0241] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0242] Control the purification unit to increase the purification flow rate.

[0243] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0244] The purified zinc concentration is obtained at least twice. When it is judged that the zinc concentration is on an upward trend according to each purified zinc concentration, the zinc injection device is controlled to stop working.

[0245] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0246] When the change state of a circuit is a short-term change, the frequency of obtaining the real-time zinc concentration is increased.

[0247] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0248] The working status of the unit of the primary circuit is obtained, and whether the zinc injection device is operating is determined according to the working status of the unit of the primary circuit. When the zinc injection device is operating, the step of controlling the zinc injection device to inject zinc into the primary circuit at a preset zinc injection flow rate is executed.

[0249] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented 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 memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may 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 may include random access memory (RAM) or external cache memory, etc. By way of 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 the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0250] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0251] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A zinc injection control method, characterized in that: The method comprises: Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate; Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit; and The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the first loop and the standard concentration range.

2. The method according to claim 1, characterized in that The step of controlling the zinc injection according to the real-time zinc concentration, the real-time parameters of the unit of the primary circuit and the standard concentration range comprises: Obtaining a change state of the primary circuit according to real-time parameters and historical parameters of the unit of the primary circuit; and The zinc injection is controlled according to the real-time zinc concentration, the change state of the primary circuit and the standard concentration range.

3. The method according to claim 2, characterized in that The step of controlling the zinc injection according to the real-time zinc concentration, the change state of the primary circuit and the standard concentration range comprises: Performing analysis based on the real-time zinc concentration and the standard concentration range to obtain a concentration analysis result; and The zinc injection is controlled based on the concentration analysis result and the change state of the primary circuit.

4. The method according to claim 3, characterized in that After analyzing the real-time zinc concentration and the standard concentration range to obtain the concentration analysis result, the method further includes: When the concentration analysis result exceeds the standard concentration range, the acquisition frequency of the real-time zinc concentration is increased.

5. The method according to claim 3, characterized in that: The change state of the primary circuit includes a long-term change, the concentration analysis result includes a concentration that is too low, and the zinc injection is controlled based on the concentration analysis result and the change state of the primary circuit, including: When the change state of the primary circuit is a long-term change and the concentration analysis result shows that the concentration is too low, the zinc injection flow rate of the zinc injection device is controlled to increase.

6. The method according to claim 3, characterized in that The change state of the primary circuit includes a long-term change, the concentration analysis result includes an over-high concentration, and the zinc injection is controlled based on the concentration analysis result and the change state of the primary circuit, including: When the change state of the primary circuit is a long-term change, the concentration analysis result shows that the concentration is too high, and the zinc injection flow rate of the zinc injection device is controlled to decrease.

7. The method according to claim 6, characterized in that After the zinc injection flow rate of the zinc injection device is controlled to be reduced, the method further comprises: Control the purification unit to increase the purification flow rate.

8. The method according to claim 7, characterized in that After the control purification unit increases the purification flow rate, the method further includes: Obtain purified zinc concentrations at least twice; and When it is determined according to each of the purified zinc concentrations that the zinc concentration is on an upward trend, the zinc injection device is controlled to stop working.

9. The method according to claim 3, characterized in that: The change state of the primary circuit includes short-term changes. Before the zinc injection is controlled based on the concentration analysis result and the change state of the primary circuit, the method includes: When the change state of the first loop is a short-term change, the frequency of obtaining the real-time zinc concentration is increased.

10. The method according to any one of claims 1 to 9, characterized in that: Before the zinc injection device is controlled to inject zinc into the primary circuit at a preset zinc injection flow rate, the method further comprises: Obtain the working status of the unit in one circuit; Determining whether the zinc injection device is operating according to the working status of the unit of the primary circuit; and When the zinc injection device is running, the step of controlling the zinc injection device to inject zinc into a circuit at a preset zinc injection flow rate is performed.

11. A zinc injection control device, characterized in that: The device comprises: A zinc injection working module, used to control the zinc injection device to inject zinc into a primary circuit at a preset zinc injection flow rate; A parameter acquisition module, used to acquire the real-time zinc concentration and the real-time parameters of the unit of the primary circuit; and The zinc injection regulating module is used to control the zinc injection according to the real-time zinc concentration, the real-time parameters of the unit of the first loop and the standard concentration range.

12. The device according to claim 11, characterized in that The zinc injection adjustment module is also used for: Obtaining a change state of the primary circuit according to real-time parameters and historical parameters of the unit of the primary circuit; and The zinc injection is controlled according to the real-time zinc concentration, the change state of the primary circuit and the standard concentration range.

13. The device according to claim 12, characterized in that The zinc injection adjustment module is also used for: Performing analysis based on the real-time zinc concentration and the standard concentration range to obtain a concentration analysis result; and The zinc injection is controlled based on the concentration analysis result and the change state of the primary circuit.

14. The device according to claim 13, characterized in that The zinc injection adjustment module is also used for: When the concentration analysis result exceeds the standard concentration range, the acquisition frequency of the real-time zinc concentration is increased.

15. The device according to claim 13, characterized in that The change state of the primary circuit includes a long-term change, the concentration analysis result includes a concentration that is too low, and the zinc injection adjustment module is further used for: When the change state of the primary circuit is a long-term change and the concentration analysis result shows that the concentration is too low, the zinc injection flow rate of the zinc injection device is controlled to increase.

16. The device according to claim 13, characterized in that The change state of the primary circuit includes a long-term change, the concentration analysis result includes an over-high concentration, and the zinc injection adjustment module is further used for: When the change state of the primary circuit is a long-term change, the concentration analysis result shows that the concentration is too high, and the zinc injection flow rate of the zinc injection device is controlled to decrease.

17. The device according to claim 16, characterized in that After the zinc injection flow rate of the zinc injection device is controlled to be reduced, the zinc injection regulating module is further used to: Control the purification unit to increase the purification flow rate.

18. The device according to claim 17, characterized in that After the control purification unit increases the purification flow rate, the zinc injection adjustment module is also used to: Obtain purified zinc concentrations at least twice; and When it is determined according to each of the purified zinc concentrations that the zinc concentration is on an upward trend, the zinc injection device is controlled to stop working.

19. The device according to claim 13, characterized in that The change state of the primary circuit includes short-term changes, and the zinc injection adjustment module is also used for: When the change state of the first loop is a short-term change, the frequency of obtaining the real-time zinc concentration is increased.

20. The device according to any one of claims 11 to 19, characterized in that The device also includes a zinc injection start-up module, which is used to: Obtain the working status of the unit in one circuit; Determining whether the zinc injection device is operating according to the working status of the unit of the primary circuit; and When yes, the step of controlling the zinc injection device to inject zinc into a circuit at a preset zinc injection flow rate is performed.

21. A zinc injection system, characterized in that: The zinc injection system includes a zinc injection device, a controller and a concentration detection device. The controller is connected to the zinc injection device and the concentration detection device. The concentration detection device is used to obtain real-time zinc concentration and send it to the controller. The controller is used to implement the zinc injection control method as described in any one of claims 1-10.

22. A computer device comprising a memory and one or more processors, wherein the memory stores computer-readable instructions, characterized in that: When the computer readable instructions are executed by the one or more processors, the one or more processors perform the following steps: Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate; Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit; and The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the first loop and the standard concentration range.

23. One or more computer storage media storing computer readable instructions, characterized in that: When the computer readable instructions are executed by one or more processors, the one or more processors perform the following steps: Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate; Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit; and The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the first loop and the standard concentration range.

24. A computer program product comprising a computer program, characterized in that When the computer program is executed by one or more processors, the one or more processors are caused to perform the following steps: Controlling the zinc injection device to inject zinc into the primary circuit of the nuclear power plant at a preset zinc injection flow rate; Obtaining real-time zinc concentration and real-time parameters of the unit of the primary circuit; and The zinc injection is controlled according to the real-time zinc concentration, the real-time parameters of the unit of the first loop and the standard concentration range.

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