Method and device for controlling average temperature of coolant in nuclear reactor

Abstract

The embodiment of the invention discloses a method and device for controlling the average temperature of a coolant in a nuclear reactor, and relates to the technical field of nuclear reactors, and the method comprises the following steps: obtaining rod position information of a temperature control rod in the reactor and the average temperature of the coolant, and then determining state indication information according to the rod position information and the average temperature of the coolant, the state indication information is used for indicating the working state of the power control rod in the reactor; acquiring first control information of a temperature control rod and second control information of a power control rod; target control information is determined according to the state indication information, the first control information and the second control information, so that the power control rod is controlled to operate according to the target control information, and efficient control over the average temperature of the coolant is achieved under the condition that the control capacity of the temperature control rod is insufficient.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear reactors, and in particular to a method and device for controlling the average temperature of a coolant in a nuclear reactor. Background Art

[0002] In a nuclear reactor, the fission reaction of nuclear fuel in the core releases a large amount of heat. The main function of the coolant is to remove this heat. If the average coolant temperature exceeds the reactor's design range, it will affect the safe operation of the nuclear reactor. Current nuclear reactors, especially pressurized water reactors, use temperature control rods to control the average coolant temperature.

[0003] In related technologies, there is a situation where the control ability of the temperature control rod is insufficient. In this case, the average coolant temperature is controlled by quantitatively calculating the adjustment value of the boron concentration to obtain the corresponding adjustment plan, which is then implemented by the nuclear reactor operation and maintenance personnel. This results in the inability to control the average coolant temperature in a timely and efficient manner.

[0004] It can be seen that, currently, when the control capability of the temperature control rod is insufficient, there is a problem of low control efficiency of the average temperature of the coolant.

[0005] Application Contents

[0006] In view of this, one of the objectives of the present application is to provide a method and device for controlling the average temperature of the coolant in a nuclear reactor, which can improve the control efficiency of the average temperature of the coolant when the control capability of the temperature control rod is insufficient.

[0007] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0008] In a first aspect, an embodiment of the present application provides a method for controlling the average temperature of a coolant in a nuclear reactor, the method comprising:

[0009] Acquire the working status of the temperature control rod and the first control command parameter of the power control rod, where the working status is used to indicate whether the control capability of the temperature control rod is normal;

[0010] updating the first control command parameter based on the working state of the temperature control rod to obtain the target control command parameter of the power control rod;

[0011] The power control rods are controlled to operate according to the target control command parameters to regulate the average coolant temperature in the nuclear reactor.

[0012] In one possible implementation, before updating the first control command parameter based on the operating state of the temperature control rod to obtain the target control command parameter of the power control rod, the method further includes:

[0013] Obtain the second control command parameter of the temperature control rod;

[0014] The first control command parameter is updated based on the working state of the temperature control rod to obtain the target control command parameter of the power control rod, including:

[0015] updating the second control command parameter based on the working state of the temperature control rod to obtain an intermediate control command parameter of the temperature control rod;

[0016] The first control command parameter is updated according to the intermediate control command parameter to obtain the target control command parameter.

[0017] In a possible implementation, updating the second control command parameter based on the working state of the temperature control rod to obtain the intermediate control command parameter of the temperature control rod includes:

[0018] Determine the target control coefficient according to the working status of the temperature control rod;

[0019] The target control coefficient is used as an intermediate control command parameter;

[0020] Wherein, the target control coefficient is different when the working state of the temperature control rod is different.

[0021] In a possible implementation, determining the target control coefficient according to the working state of the temperature control rod includes:

[0022] When the working state of the temperature control rod is a first state, determining a target control coefficient according to the first control command parameter and the second control command parameter, the first state being used to indicate that the control ability of the temperature control rod is abnormal;

[0023] When the working state of the temperature control rod is the second state, the target control coefficient is determined to be zero. The second state is used to indicate that the control ability of the temperature control rod is normal.

[0024] In a possible implementation, determining the target control coefficient according to the first control command parameter and the second control command parameter includes:

[0025] The first control command parameter is divided by the second control command parameter to obtain a target control coefficient.

[0026] In a possible implementation, after updating the first control command based on the operating state of the temperature control rod to obtain the target control command parameter of the power control rod, the method further includes:

[0027] Input the target control command parameters into the preset function generator to obtain the rod speed information of the power control rod;

[0028] Control the power control rods to operate according to target control command parameters to regulate the average coolant temperature in the nuclear reactor, including:

[0029] The power control rods are controlled to operate according to the rod speed information to regulate the average coolant temperature in the nuclear reactor.

[0030] In a possible implementation, obtaining the working status of the temperature control rod includes:

[0031] Obtaining the rod position information of the temperature control rod and the average coolant temperature in the nuclear reactor;

[0032] When the rod position information is outside a first preset threshold range and the average temperature of the coolant in the nuclear reactor is outside a second preset threshold range, determining the operating state of the temperature control rod;

[0033] The first preset threshold range and the second preset threshold range are different threshold ranges.

[0034] In a possible implementation, when the rod position information is outside a first preset threshold range and the average coolant temperature is outside a second preset threshold range, before determining the working state of the temperature control rod, the method further includes:

[0035] Acquiring target monitoring information, the target monitoring information including an operating state of a temperature control rod and / or an operating state of a nuclear reactor;

[0036] When the rod position information is outside a first preset threshold range and the average coolant temperature is outside a second preset threshold range, determining the working state of the temperature control rod includes:

[0037] When the rod position information is outside the first preset threshold range, the coolant average temperature is outside the second preset threshold range, and the target monitoring information meets the preset conditions, determining that the working state of the temperature control rod is a first state, and the first state is used to indicate that the control ability of the temperature control rod is abnormal;

[0038] When the rod position information is outside the first preset threshold range, the average coolant temperature is outside the second preset threshold range, and the target monitoring information does not meet the preset conditions, the working state of the temperature control rod is determined to be the second state, and the second state is used to indicate that the control ability of the temperature control rod is normal.

[0039] In a possible implementation, the preset conditions include:

[0040] The operating status of the temperature control rod is abnormal; and / or,

[0041] The operating status of the nuclear reactor is normal.

[0042] In a second aspect, embodiments of the present application further provide a device for controlling the average temperature of a coolant in a nuclear reactor, which is applied to a nuclear reactor including a temperature control rod and a power control rod, and includes:

[0043] an acquisition module, configured to acquire a working state of the temperature control rod and a first control command parameter of the power control rod, wherein the working state is used to indicate whether the control capability of the temperature control rod is normal;

[0044] an updating module, configured to update the first control command parameter based on the working state of the temperature control rod to obtain a target control command parameter of the power control rod;

[0045] The control module is used to control the power control rods to operate according to the target control command parameters to regulate the average temperature of the coolant in the nuclear reactor.

[0046] Embodiments of the present application provide a method for controlling the average coolant temperature in a nuclear reactor. The method obtains rod position information and the average coolant temperature of a temperature control rod in the reactor, and then determines status indication information based on the rod position information and the average coolant temperature. This status indication information is used to indicate the operating status of the power control rod in the reactor. First control information of the temperature control rod and second control information of the power control rod are then obtained. Target control information is determined based on the status indication information, the first control information, and the second control information, so as to control the power control rod to operate according to the target control information. This method achieves efficient control of the average coolant temperature even when the temperature control rod's control capability is insufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. It should be understood that 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 paying any creative work.

[0048] Figure 1 A flow chart of a method for controlling the average temperature of a coolant in a nuclear reactor provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of triggering control functions included in a method for controlling the average temperature of a coolant in a nuclear reactor provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of control functions included in a method for controlling the average temperature of a coolant in a nuclear reactor provided in an embodiment of the present application;

[0051] Figure 4A schematic diagram of the functional modules of a device for controlling the average temperature of a coolant in a nuclear reactor provided in an embodiment of the present application;

[0052] Figure 5 This is a diagram of the internal structure of an electronic device provided in an embodiment of the present application.

[0053] Description of the reference numerals: device for controlling the average temperature of the coolant in a nuclear reactor 400 , acquisition module 410 , update module 420 , control module 430 . DETAILED DESCRIPTION

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0056] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0057] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0058] In the description of this application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0059] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0060] It should be noted that, in the absence of conflict, the features in the embodiments of this application can be combined with each other.

[0061] Furthermore, in the embodiments of the present application, the term "connection" may refer to "electrical connection" or "direct connection." "Electrical connection" may refer to a direct electrical connection between two components or an electrical connection between two components via one or more normally open tubes or other components.

[0062] To facilitate a better understanding of the solutions of the embodiments of the present application, the relevant technologies are first introduced below.

[0063] Control rods are made of neutron-absorbing materials to control the rate of a chain reaction at a predetermined level. They can compensate for fuel consumption and regulate the reaction rate. Safety rods are used to quickly stop the chain reaction. Absorber materials are typically boron, boron carbide, cadmium, or silver-indium-cadmium.

[0064] Generally, control rods can be categorized by their function as temperature control rods, power control rods, and shutdown control rods. Temperature control rods are often used to control the average coolant temperature, power control rods are often used to control reactor power, and shutdown control rods are often used for emergency shutdowns. Temperature control rods can also be referred to as temperature rods or R rods, power control rods can also be referred to as power rods, N rods, or G rods, and shutdown control rods can also be referred to as shutdown rods or S rods. For uniformity, they are referred to as temperature control rods and power control rods in the following embodiments.

[0065] A coolant is a fluid that flows through or around a system to prevent it from overheating. It uses or dissipates heat by transferring it to other systems. Ideal coolants have high heat capacity, low viscosity, are inexpensive, non-toxic, chemically inert, and neither corrosive nor conducive to corrosion. Specifically, a coolant within a certain temperature range can remove heat generated by a nuclear reactor. This heat can then be converted into mechanical energy through certain devices.

[0066] Average coolant temperature can be understood as the average coolant temperature in a specific area of the reactor system or over a period of time. During this cycle, the coolant temperature varies at different locations. By calculating the average coolant temperature throughout the entire loop, we can better assess the thermal performance of the reactor system.

[0067] Generally speaking, if the average coolant temperature is too low, the heat transfer efficiency within the reactor will be reduced, and the heat generated by the fission reaction of the nuclear fuel cannot be removed in a timely and effective manner. This in turn limits the reactor's power output, preventing it from reaching its designed rated power, affecting power generation efficiency or the effectiveness of other applications. If the average coolant temperature is too high, the temperature difference between it and the reactor core will decrease, reducing the driving force for heat transfer and the coolant's ability to remove heat. The core temperature may further increase, forming a vicious cycle that can easily lead to core overheating.

[0068] In order to solve the technical problems in the background technology, the embodiments of the present application provide a method and device for controlling the average temperature of the coolant in a nuclear reactor. The method for controlling the average temperature of the coolant in a nuclear reactor provided by the embodiments of the present application is first introduced below.

[0069] See Figure 1 , Figure 1 This is a flow chart of a method for controlling the average temperature of the coolant in a nuclear reactor provided in an embodiment of the present application. This method can be applied to the device for controlling the average temperature of the coolant in a nuclear reactor or the electronic equipment in the following embodiments, which include personal computers, servers, mobile devices, cloud computing platforms, and supercomputers. This method can be applied to nuclear reactors that include temperature control rods and power control rods. The following will describe this method from the perspective of application to electronic equipment. The method may specifically include the following steps:

[0070] Step 110: Acquire the working state of the temperature control rod and the first control command parameter of the power control rod. The working state is used to indicate whether the control capability of the temperature control rod is normal.

[0071] Step 120: Update the first control command parameter based on the working state of the temperature control rod to obtain the target control command parameter of the power control rod.

[0072] Step 130: Control the power control rods to operate according to the target control command parameters to regulate the average temperature of the coolant in the nuclear reactor.

[0073] Embodiments of the present application provide a method for controlling the average coolant temperature in a reactor. The method obtains rod position information and the average coolant temperature of a temperature control rod in the reactor, and then determines status indication information based on the rod position information and the average coolant temperature. This status indication information is used to indicate the operating status of the power control rod in the reactor. First control information of the temperature control rod and second control information of the power control rod are then obtained, and target control information is determined based on the status indication information, the first control information, and the second control information. This method controls the power control rod to operate according to the target control information, thereby achieving efficient control of the average coolant temperature even when the control capability of the temperature control rod is insufficient.

[0074] The following will be Figure 1 The various steps of the method for controlling the average temperature of the coolant in a nuclear reactor are described in detail.

[0075] In step 110, the electronic device may obtain relevant information of the temperature control rod, ie, the working status of the temperature control rod, and relevant information of the power control rod, ie, the first control command parameter.

[0076] The working state of the temperature control rod can be used to characterize the control capability of the temperature control rod. Specifically, the working state of the temperature control rod can be used to characterize whether the control capability of the temperature control rod is normal or abnormal.

[0077] The above-mentioned first control command parameters can be used to control the operation of the power control rod, such as controlling the position, moving speed, moving direction, moving time, etc. of the power control rod.

[0078] In some embodiments, the first control command parameter includes a position command parameter, which can be used to control the position of the power rod in the nuclear reactor core.

[0079] Specifically, the position command parameters may include absolute position command parameters and relative position command parameters. The absolute position command parameters can be used to specify the insertion depth of the power control rod in the nuclear reactor core, for example, specifying that the power control rod is inserted 100 cm into the core; the relative position command parameters can be used to specify the movement command of the power control rod relative to the current position of the power control rod, for example, specifying that the power control rod moves 100 cm up or down relative to the current position.

[0080] In some embodiments, the first control command parameter includes a movement speed command parameter, which can be used to control the movement speed of the power control rod in the core of the nuclear reactor.

[0081] Specifically, the moving speed command parameters may include constant speed command parameters and variable speed command parameters. The constant speed command parameters can be used to specify that the power control rod moves at a fixed speed, for example, 2 cm per second; the variable speed command parameters can be used to dynamically adjust the moving speed of the power control rod, for example, 1 cm per second from the 1st second to the 5th second, and 2 cm per second from the 5th second to the 10th second.

[0082] In some embodiments, the first control command parameter includes a movement direction command parameter, which can be used to control the movement direction of the power control rod, such as moving upward (toward the top of the nuclear reactor) or moving downward (toward the bottom of the nuclear reactor).

[0083] In some embodiments, the first control command parameter includes an action time command parameter, and the action time command parameter can be used to control the action moment or action duration of the power control rod.

[0084] Specifically, the action time command parameters may include a start action time command parameter and a continuous action time command parameter. The start action time command parameter can be used to specify the specific moment when the power control rod starts to act; the continuous action time command parameter can be used to specify the length of time that the power control rod maintains a certain action or state, such as keeping moving downward for 30 seconds.

[0085] The first control command parameter may be obtained at the same time as the working status of the temperature control rod.

[0086] The control capability of the above-mentioned temperature control rod can be understood as the ability of the temperature control rod to control the average temperature of the coolant in the nuclear reactor. If the temperature control rod can maintain the average temperature of the coolant within a certain range when moving upward or downward in the core of the nuclear reactor, it can be said that the control capability of the temperature control rod is normal; otherwise, it means that the control capability of the temperature control rod is abnormal or insufficient.

[0087] The electronic device can obtain the working status of the temperature control rod and the first control command parameter of the power control rod in real time, and can also obtain the working status of the temperature control rod and the first control command parameter of the power control rod when preset conditions are met.

[0088] In some embodiments, the preset conditions satisfied by the electronic device may include any one of the following:

[0089] The monitoring time of the electronic device reaches the preset time;

[0090] The electronic device receives the acquisition instruction.

[0091] The acquisition instruction can be manually operated and input into the electronic device.

[0092] In step 120, the electronic device may update the first control command parameter according to the working state of the temperature control rod, and obtain the target control command parameter for directly controlling the power control rod.

[0093] Specifically, the target control command parameters obtained by updating the first control command parameters are different depending on the working state of the temperature control rod.

[0094] For example, when the working state of the temperature control rod is normal, the first control command parameter is not updated, or it can be understood that the target control command parameter obtained after the update is the same as the first control command parameter; when the working state of the temperature control rod is abnormal, the target control command parameter obtained after the update is different from the first control command parameter.

[0095] In step 130, the electronic equipment may control the operation of the power control rod according to the target control command parameters obtained above, thereby achieving regulation of the average temperature of the coolant in the nuclear reactor.

[0096] Specifically, controlling the depth, speed, direction, and duration of insertion of the power control rod into the nuclear reactor core can achieve regulation of the average coolant temperature.

[0097] The embodiment of the present application controls the power control rod to participate in the regulation of the average coolant temperature in the nuclear reactor. This can avoid the low efficiency of the control of the average coolant temperature and the generation of a large amount of nuclear waste water caused by the nuclear reactor operation and maintenance personnel quantitatively calculating the adjustment value of the boron concentration and implementing the adjustment when the control ability of the temperature control rod is abnormal or insufficient, thereby achieving efficient regulation of the average coolant temperature.

[0098] In one possible implementation, before updating the first control command parameter based on the operating state of the temperature control rod to obtain the target control command parameter of the power control rod, the method further includes:

[0099] Obtain the second control command parameter of the temperature control rod;

[0100] The first control command parameter is updated based on the working state of the temperature control rod to obtain the target control command parameter of the power control rod, including:

[0101] updating the second control command parameter based on the working state of the temperature control rod to obtain an intermediate control command parameter of the temperature control rod;

[0102] The first control command parameter is updated according to the intermediate control command parameter to obtain the target control command parameter.

[0103] The embodiment of the present application obtains the second control command parameter of the temperature control rod and updates the first control command parameter in the above embodiment based on the intermediate control command parameter obtained by updating the second control command parameter, which can improve the accuracy and reliability of determining the target control command parameter. The determined target control command parameter can achieve efficient regulation of the average coolant temperature in the nuclear reactor.

[0104] The second control command parameters may include the position command parameter, movement speed command parameter, movement direction command parameter, and action time command parameter included in the first control command parameters in the aforementioned embodiment. The difference is that the first control command parameters control the power control rod, while the second control command parameters control the temperature control rod. For a detailed description of the second control command parameters, please refer to the previous description of the first control command parameters and will not be repeated here.

[0105] The values of the above-mentioned intermediate control command parameters are also different under different working conditions of the temperature control rod. For example, when the working condition of the temperature control rod is normal, the second control command parameter is not updated, or it can be understood that the intermediate control command parameter and the second control command parameter obtained after the update are the same; when the working condition of the temperature control rod is abnormal, the intermediate control command parameter and the second control command parameter obtained after the update are different.

[0106] In some embodiments, the acquisition time of the second control command parameter may be the same as the acquisition time of the first control command parameter.

[0107] Considering that the first control command parameter and the second control command parameter may change frequently due to different control requirements, obtaining the latest second control command parameter can improve the accuracy and reliability of ultimately determining the target control command parameter.

[0108] In some embodiments, the time of obtaining the second control command parameter can be later than the time of obtaining the first control command parameter. In this way, the second control command parameter with the latest change can be obtained, and the accuracy and reliability of the obtained target control command parameter can be improved based on the latest second control command parameter.

[0109] The above-mentioned updating of the first control command parameter according to the intermediate control command parameter to obtain the target control command parameter may be performed by performing different numerical operations on the intermediate control command parameter and the first control command parameter, thereby updating the first control command parameter to obtain the target control command parameter.

[0110] In some embodiments, the updating of the first control command parameter according to the intermediate control command parameter to obtain the target control command parameter includes updating the first control command parameter according to the intermediate control command parameter and the second control command parameter.

[0111] In some embodiments, the above-mentioned updating of the first control command parameter based on the intermediate control command parameter and the second control command parameter can be to multiply the intermediate control command parameter by the second control command parameter, and then add the multiplication result to the first control command parameter to achieve the update of the first control command parameter.

[0112] In a possible implementation, updating the second control command parameter based on the working state of the temperature control rod to obtain the intermediate control command parameter of the temperature control rod includes:

[0113] Determine the target control coefficient according to the working status of the temperature control rod;

[0114] The target control coefficient is used as an intermediate control command parameter;

[0115] Wherein, the target control coefficient is different when the working state of the temperature control rod is different.

[0116] The embodiment of the present application determines a target control coefficient and uses the target control coefficient as an intermediate control command parameter. Unlike the intermediate control command parameters including various types of command parameters mentioned above, the target control coefficient is used as a coefficient, which can simplify the intermediate control command parameters.

[0117] The target control coefficient is different under different working conditions of the temperature control rod, which is similar to the different values of the aforementioned intermediate control command parameters under different working conditions of the temperature control rod, and will not be repeated here.

[0118] In a possible implementation, determining the target control coefficient according to the working state of the temperature control rod includes:

[0119] When the working state of the temperature control rod is a first state, determining a target control coefficient according to the first control command parameter and the second control command parameter, the first state being used to indicate that the control ability of the temperature control rod is abnormal;

[0120] When the working state of the temperature control rod is the second state, the target control coefficient is determined to be zero. The second state is used to indicate that the control ability of the temperature control rod is normal.

[0121] The embodiment of the present application determines the target control coefficient by jointly determining the first control command parameter and the second command control parameter, which can improve the reliability of the target control coefficient and further improve the reliability of the target control command parameter finally determined.

[0122] The first state mentioned above can be understood as the working state of the temperature control rod being abnormal, that is, the control ability of the temperature control rod is abnormal or insufficient.

[0123] The second state can be understood as the working state of the temperature control rod being normal, that is, the control ability of the temperature control rod is normal.

[0124] The above-mentioned determination of the target control coefficient based on the first control command parameter and the second control command parameter may be performed by performing numerical calculation on the first control command parameter and the second control command parameter to obtain the target control coefficient.

[0125] The above target control coefficient is zero, which indicates that the power control rod can operate according to the original first control command parameters.

[0126] In a possible implementation, determining the target control coefficient according to the first control command parameter and the second control command parameter includes:

[0127] The first control command parameter is divided by the second control command parameter to obtain a target control coefficient.

[0128] The embodiment of the present application can accurately determine the aforementioned target control coefficient by setting the first control command parameter to the second control command parameter.

[0129] In some embodiments, the first control command parameter and the second control command parameter can be added to obtain a first value, and the first control command parameter and the second control command parameter can be multiplied to obtain a second value. The first value can be divided by the second value to obtain a target control coefficient, or the second value can be divided by the first value to obtain a target control coefficient. The specific method for determining the target control coefficient can be selected based on actual needs.

[0130] In a possible implementation, after updating the first control command based on the operating state of the temperature control rod to obtain the target control command parameter of the power control rod, the method further includes:

[0131] Input the target control command parameters into the preset function generator to obtain the rod speed information of the power control rod;

[0132] Control the power control rods to operate according to target control command parameters to regulate the average coolant temperature in the nuclear reactor, including:

[0133] The power control rods are controlled to operate according to the rod speed information to regulate the average coolant temperature in the nuclear reactor.

[0134] By inputting the target control command parameters into a preset function generator, the embodiment of the present application can obtain accurate and reliable rod speed information that can be directly used to control the power control rod, and then the average coolant temperature in the nuclear reactor can be quickly regulated by controlling the movement of the power control rod.

[0135] The preset function generator is a device or software module that generates an output signal based on a functional relationship between an input and an internal setting. The preset function generator can be set based on actual needs.

[0136] In some embodiments, the preset function generator may include a digital-to-analog converter, a voltage amplifier, and an attenuator.

[0137] The digital-to-analog converter converts the target control command parameters into analog electrical signals, specifically analog voltage signals. The voltage amplifier can set parameters based on actual needs to amplify the signal amplitude, while the attenuator can adjust the output voltage to output corresponding rod speed information. Together, the voltage amplifier and attenuator enable precise control of rod speed. The analog voltage signal is linearly correlated with rod speed; in other words, different analog voltage signals correspond to different rod speeds.

[0138] In some embodiments, the preset function generator may include a digital-to-analog converter and a main control unit.

[0139] The digital-to-analog converter converts the target control command parameters into analog electrical signals, specifically analog voltage signals. The main control unit has signal analysis and processing capabilities. For example, the main control unit can convert the analog voltage signal into a frequency, and then output corresponding rod speed information, enabling precise control of the rod speed. The frequency and rod speed are linearly related; in other words, different high and low frequencies correspond to different rod speeds.

[0140] The rod speed information is the movement speed of the power control rod in the nuclear reactor core.

[0141] In some embodiments, the above-mentioned inputting of the target control command parameters into a preset function generator to obtain the rod speed information of the power control rod can be inputting the target control command parameters into a preset rod speed program of the power control rod, and then processing them through the above-mentioned preset function generator to obtain the rod speed information of the power control rod.

[0142] In some embodiments, the above-mentioned target control command parameters may include information such as the position, moving speed, moving direction and moving time of the power control rod. After this information is processed by a preset power control rod speed program and a preset function generator, information such as the power control rod speed information, moving direction and moving time is obtained, thereby realizing the control of the power control rod and the regulation of the average coolant temperature in the nuclear reactor.

[0143] In a possible implementation, obtaining the working status of the temperature control rod includes:

[0144] Obtaining the rod position information of the temperature control rod and the average coolant temperature in the nuclear reactor;

[0145] When the rod position information is outside a first preset threshold range and the average temperature of the coolant in the nuclear reactor is outside a second preset threshold range, determining the operating state of the temperature control rod;

[0146] The first preset threshold range and the second preset threshold range are different threshold ranges.

[0147] The embodiment of the present application can jointly judge and determine the working status of the temperature control rod through the rod position information of the temperature control rod and the average temperature of the coolant, and can accurately judge the working status of the temperature control rod.

[0148] In this embodiment, the average coolant temperature and the rod position information of the temperature control rod can be obtained at the same time.

[0149] The first preset threshold range is a numerical range corresponding to the rod position information and can be expressed as (min1, max1), for example, (0, 10), where the unit is meters. The first preset threshold range is related to the type and design standards of the nuclear reactor and is not specifically limited here.

[0150] The second preset threshold range is a numerical range corresponding to the average coolant temperature and can be expressed as (min², max²), for example, (250, 320), where the unit is degrees Celsius. The second preset threshold range is also related to the type of nuclear reactor. Generally, different types of nuclear reactors have different corresponding second preset threshold ranges, which is not specifically limited here.

[0151] The rod position information is outside the first preset value range, and the average coolant temperature in the nuclear reactor is outside the second preset threshold range, which may indicate that the control capability of the temperature control rod is abnormal or insufficient.

[0152] In a possible implementation, when the rod position information is outside a first preset threshold range and the average coolant temperature is outside a second preset threshold range, before determining the working state of the temperature control rod, the method further includes:

[0153] Acquiring target monitoring information, the target monitoring information including an operating state of a temperature control rod and / or an operating state of a nuclear reactor;

[0154] When the rod position information is outside a first preset threshold range and the average coolant temperature is outside a second preset threshold range, determining the working state of the temperature control rod includes:

[0155] When the rod position information is outside the first preset threshold range, the coolant average temperature is outside the second preset threshold range, and the target monitoring information meets the preset conditions, determining that the working state of the temperature control rod is a first state, and the first state is used to indicate that the control ability of the temperature control rod is abnormal;

[0156] When the rod position information is outside the first preset threshold range, the average coolant temperature is outside the second preset threshold range, and the target monitoring information does not meet the preset conditions, the working state of the temperature control rod is determined to be the second state, and the second state is used to indicate that the control ability of the temperature control rod is normal.

[0157] In some embodiments, the aforementioned pre-set conditions include:

[0158] The operating status of the temperature control rod is abnormal; and / or,

[0159] The operating status of the nuclear reactor is normal.

[0160] The embodiment of the present application can further improve the accuracy and reliability of determining the working status of the temperature control rod by obtaining the operating status of the temperature control rod and / or the operating status of the nuclear reactor, and combining it with the rod position information and the average coolant temperature obtained in the above-mentioned embodiments.

[0161] The operating status of the temperature control rod can be determined by the relevant operation and maintenance personnel of the nuclear reactor. For example, if the temperature control board is found to be stuck or unavailable, the relevant operation and maintenance personnel can manually trigger the information to determine the operating status of the temperature control rod.

[0162] It should be noted that the operating status of the temperature control rod is determined by the relevant operation and maintenance personnel of the nuclear reactor, while the working status of the temperature control rod in the above embodiment can be determined by the rod position information of the temperature control rod and the average temperature of the coolant.

[0163] The operating status of the above-mentioned nuclear reactor can be determined by the corresponding control system of the nuclear reactor, or by relevant operation and maintenance personnel. If the operating status of the nuclear reactor is abnormal, it may indicate that the reactor needs to be shut down, and if the operating status of the nuclear reactor is normal, it may indicate that the reactor does not need to be shut down.

[0164] In a case where the target monitoring information includes only the operating status of the temperature control rod, when the rod position information is outside the first preset threshold range and the average coolant temperature is outside the second preset threshold range, determining the operating status of the temperature control rod may include:

[0165] When the rod position information is outside the first preset threshold range, the coolant average temperature is outside the second preset threshold range, and the operating state of the temperature control rod is abnormal, the operating state of the temperature control rod is determined to be the first state.

[0166] In the case where the target monitoring information only includes the operating status of the nuclear reactor, determining the operating status of the temperature control rod when the rod position information is outside the first preset threshold range and the average coolant temperature is outside the second preset threshold range may include:

[0167] When the rod position information is outside the first preset threshold range, the coolant average temperature is outside the second preset threshold range, and the operating state of the nuclear reactor is normal, the operating state of the temperature control rod is determined to be the first state.

[0168] When the target monitoring information includes the operating status of the temperature control rod and the operating status of the nuclear reactor, determining the operating status of the temperature control rod when the rod position information is outside a first preset threshold range and the average coolant temperature is outside a second preset threshold range may include:

[0169] When the rod position information is outside the first preset threshold range, the average coolant temperature is outside the second preset threshold range, the operating state of the temperature control rod is abnormal, and the operating state of the nuclear reactor is normal, the operating state of the temperature control rod is determined to be the first state.

[0170] In some embodiments, after step 130 in the above embodiment, that is, after controlling the power control rods to operate according to the target control command parameters to regulate the average coolant temperature in the nuclear reactor, the following steps may also be performed:

[0171] When it is detected that the power control rod is controlled to operate for a preset time according to the target control command parameters, the operations of steps 110 to 130 may be re-executed until the average coolant temperature is within a second preset threshold range.

[0172] The above-mentioned preset duration can be selected according to actual conditions. In some embodiments, the above-mentioned preset duration is 2 minutes.

[0173] In some embodiments, if the nuclear reactor includes a steam turbine, the electronic device may obtain the turbine load and input the turbine load into a preset function generator, which may output the average coolant temperature. The preset function generator in this embodiment is load-dependent and may be set based on actual needs.

[0174] To clearly describe the detailed process of each of the above embodiments, a specific embodiment will be used below for illustration:

[0175] See Figure 2 , Figure 2 A schematic diagram of control function triggering included in a method for controlling the average temperature of the coolant in a nuclear reactor provided in an embodiment of the present application.

[0176] exist Figure 2 middle:

[0177] When the rod position of the temperature control rod is greater than or equal to max1 (corresponding to the rod position information being outside the first preset threshold range), the calculated temperature control rod position at the stack top signal is 1: temperature control rod position ≥ stack top rod position.

[0178] When the rod position of the temperature control rod is less than or equal to min1 (corresponding to the rod position information being outside the first preset threshold range), the calculated temperature control rod position is at the insertion limit signal is 1: temperature control rod position ≤ insertion limit.

[0179] The temperature control rod is located at the top of the stack and the temperature control rod is located at the insertion limit signal to take the "OR" gate (corresponding to Figure 2 ≥1), generating a temperature control rod position limit signal.

[0180] The processed steam turbine load signal enters the function generator (corresponding to the above-mentioned preset function generator), and generates a corresponding coolant average temperature signal according to different steam turbine load values.

[0181] When the value of the coolant average temperature signal is less than or equal to min2 (corresponding to the coolant average temperature in the above-mentioned nuclear reactor being outside the second preset threshold range), the calculated coolant average temperature is lower than the limit signal is 1: coolant average temperature ≤ coolant average temperature limit.

[0182] The temperature control rod position limit signal and the coolant average temperature lower than the limit signal, as well as the manual trigger signal when needed, such as when the temperature control rod is stuck or unavailable, take the "AND" gate (corresponding to the above-mentioned relevant operation and maintenance personnel can manually trigger the information to determine the operating status of the temperature control rod) to generate a flexible control trigger signal.

[0183] The flexible control trigger signal and the no-shutdown signal (corresponding to the normal operation state of the nuclear reactor) are combined into an AND gate to generate a flexible control validation signal.

[0184] See Figure 3 , Figure 3 A schematic diagram of the control functions included in a method for controlling the average temperature of the coolant in a nuclear reactor provided in an embodiment of the present application.

[0185] exist Figure 3 middle:

[0186] The power control rod control command (corresponding to the above-mentioned first control command parameter) is divided by the temperature control rod control command (corresponding to the above-mentioned second control command parameter) to generate a flexible control coefficient signal (corresponding to the above-mentioned target control coefficient): flexible control coefficient = power control rod control command / temperature control rod control command.

[0187] The flexible control effectiveness signal is used as a logic signal to trigger the flexible control effective coefficient signal to select between the flexible control coefficient signal and the value 0: when the flexible control effectiveness signal is 1, the flexible control coefficient signal is selected (corresponding to the above-mentioned case where the operating state of the temperature control rod is the first state, the target control coefficient is determined according to the first control command parameter and the second command control parameter); otherwise, the value 0 is selected (corresponding to the above-mentioned case where the operating state of the temperature control rod is the second state, the target control coefficient is determined to be zero). This process can be implemented by a signal selector.

[0188] The flexible control effective coefficient signal is multiplied by the temperature control rod control command to generate the temperature control rod control signal under flexible control:

[0189] The temperature control rod control signal under flexible control = the temperature control rod control command × the flexible control effectiveness coefficient (corresponding to the above-mentioned multiplication of the intermediate control command parameter by the second control command parameter).

[0190] The temperature control rod control signal under flexible control is added to the power control rod control command to generate the power control rod control signal under flexible control:

[0191] The power control rod control signal under flexible control = the temperature control rod control signal under flexible control + the power control rod control command (corresponding to the above multiplication of the intermediate control command parameter by the second control command parameter, and then adding the multiplication result to the first control command parameter to achieve the update of the first control command parameter).

[0192] The power control rod control command under flexible control enters the power control rod speed program, and the power control rod speed signal under flexible control (corresponding to the above-mentioned rod speed information) is generated through a function generator.

[0193] The power control rod speed signal under the above-mentioned flexible control is used to control the power control rod to achieve flexible control of the reactor power and the average coolant temperature of the nuclear power plant (corresponding to the above-mentioned control of the power control rod operating according to the target control command parameters to regulate the average coolant temperature in the nuclear reactor).

[0194] Corresponding to the above method embodiment, the present application embodiment also provides a device for controlling the average temperature of the coolant in a nuclear reactor, see Figure 4 , Figure 4This is a schematic diagram of the functional modules of a device for controlling the average temperature of a coolant in a nuclear reactor provided in an embodiment of the present application, wherein the device 400 for controlling the average temperature of a coolant in a nuclear reactor includes:

[0195] An acquisition module 410 is configured to acquire an operating state of the temperature control rod and a first control command parameter of the power control rod, wherein the operating state indicates whether the control capability of the temperature control rod is normal;

[0196] An updating module 420, configured to update the first control command parameter based on the operating state of the temperature control rod to obtain a target control command parameter of the power control rod;

[0197] The control module 430 is used to control the power control rods to operate according to the target control command parameters to regulate the average temperature of the coolant in the nuclear reactor.

[0198] The device for controlling the average temperature of the coolant in a nuclear reactor provided in the embodiment of the present application can achieve the following Figure 1 The various processes implemented in the method embodiments can achieve similar or identical technical effects, and to avoid repetition, they will not be described here.

[0199] In one possible embodiment, the apparatus 400 for controlling the average temperature of the coolant in a nuclear reactor further includes a first processing module, wherein the first processing module is configured to:

[0200] Obtain the second control command parameter of the temperature control rod;

[0201] The update module 420 is further specifically configured to:

[0202] updating the second control command parameter based on the working state of the temperature control rod to obtain an intermediate control command parameter of the temperature control rod;

[0203] The first control command parameter is updated according to the intermediate control command parameter to obtain the target control command parameter.

[0204] In a possible implementation, the update module 420 includes an update submodule, which is configured to:

[0205] Determine the target control coefficient according to the working status of the temperature control rod;

[0206] The target control coefficient is used as an intermediate control command parameter;

[0207] Wherein, the target control coefficient is different when the working state of the temperature control rod is different.

[0208] In a possible implementation, the updating submodule is further configured to:

[0209] When the working state of the temperature control rod is a first state, determining a target control coefficient according to the first control command parameter and the second control command parameter, the first state being used to indicate that the control ability of the temperature control rod is abnormal;

[0210] When the working state of the temperature control rod is the second state, the target control coefficient is determined to be zero. The second state is used to indicate that the control ability of the temperature control rod is normal.

[0211] In a possible implementation, the updating submodule further includes an updating unit, which is configured to:

[0212] The first control command parameter is divided by the second control command parameter to obtain a target control coefficient.

[0213] In one possible embodiment, the apparatus 400 for controlling the average temperature of the coolant in a nuclear reactor further includes a second processing module, wherein the second processing module is configured to:

[0214] Input the target control command parameters into the preset function generator to obtain the rod speed information of the power control rod;

[0215] The control module 430 is further specifically configured to:

[0216] The power control rods are controlled to operate according to the rod speed information to regulate the average coolant temperature in the nuclear reactor.

[0217] In a possible implementation, the acquisition module 410 is further specifically configured to:

[0218] Obtaining the rod position information of the temperature control rod and the average coolant temperature in the nuclear reactor;

[0219] When the rod position information is outside a first preset threshold range and the average temperature of the coolant in the nuclear reactor is outside a second preset threshold range, determining the operating state of the temperature control rod;

[0220] The first preset threshold range and the second preset threshold range are different threshold ranges.

[0221] In a possible implementation, the acquisition module 410 is further specifically configured to:

[0222] Acquiring target monitoring information, the target monitoring information including the working status of the temperature control rod and / or the operating status of the nuclear reactor;

[0223] When the rod position information is outside the first preset threshold range, the coolant average temperature is outside the second preset threshold range, and the target monitoring information meets the preset conditions, determining that the working state of the temperature control rod is a first state, and the first state is used to indicate that the control ability of the temperature control rod is abnormal;

[0224] When the rod position information is outside the first preset threshold range, the average coolant temperature is outside the second preset threshold range, and the target monitoring information does not meet the preset conditions, the working state of the temperature control rod is determined to be the second state, and the second state is used to indicate that the control ability of the temperature control rod is normal.

[0225] In some embodiments, the aforementioned pre-set conditions include:

[0226] The working status of the temperature control rod is abnormal; and / or,

[0227] The operating status of the nuclear reactor is abnormal.

[0228] The present application also provides an electronic device. Figure 5 , Figure 5 An internal structure diagram of an electronic device provided in an embodiment of the present application. The electronic device includes a processor, a memory, and a network interface connected via a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the electronic device stores an operating system and may also store a computer program. When the computer program is executed by the processor, the processor may implement the method for controlling the average temperature of the coolant in the nuclear reactor applied to the electronic device in the above embodiment. The internal memory may also store a computer program. When the computer program is executed by the processor, the processor may execute the method for controlling the average temperature of the coolant in the nuclear reactor. Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the electronic device to which the solution of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0229] An embodiment of the present application further discloses a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for controlling the average temperature of the coolant in a nuclear reactor as described in the method embodiment is implemented.

[0230] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the embodiment of the method for controlling the average temperature of the coolant in a nuclear reactor as described above, and can achieve similar or identical technical effects. To avoid repetition, it will not be described here.

[0231] 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, which can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0232] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A method for controlling the average temperature of a coolant in a nuclear reactor, characterized in that: Applied to a nuclear reactor including temperature control rods and power control rods, the method comprises: Acquiring a working state of the temperature control rod and a first control command parameter of the power control rod, wherein the working state is used to indicate whether the control capability of the temperature control rod is normal; updating the first control command parameter based on the working state of the temperature control rod to obtain a target control command parameter of the power control rod; The power control rods are controlled to operate according to the target control command parameters to regulate the average temperature of the coolant in the nuclear reactor.

2. The method according to claim 1, wherein Before updating the first control command parameter based on the operating state of the temperature control rod to obtain the target control command parameter of the power control rod, the method further includes: Acquiring a second control command parameter of the temperature control rod; The updating of the first control command parameter based on the working state of the temperature control rod to obtain the target control command parameter of the power control rod includes: updating the second control command parameter based on the working state of the temperature control rod to obtain an intermediate control command parameter of the temperature control rod; The first control command parameter is updated according to the intermediate control command parameter to obtain the target control command parameter.

3. The method according to claim 2, wherein The updating of the second control command parameter based on the working state of the temperature control rod to obtain the intermediate control command parameter of the temperature control rod includes: determining a target control coefficient according to the working state of the temperature control rod; Using the target control coefficient as the intermediate control command parameter; Wherein, when the working state of the temperature control rod is different, the target control coefficient is different.

4. The method according to claim 3, wherein Determining the target control coefficient according to the working state of the temperature control rod includes: determining the target control coefficient according to the first control command parameter and the second control command parameter when the operating state of the temperature control rod is a first state, the first state being used to indicate that the control ability of the temperature control rod is abnormal; When the operating state of the temperature control rod is the second state, the target control coefficient is determined to be zero, and the second state is used to indicate that the control ability of the temperature control rod is normal.

5. The method according to claim 4, wherein The determining the target control coefficient according to the first control command parameter and the second control command parameter includes: The first control command parameter is divided by the second control command parameter to obtain the target control coefficient.

6. The method according to claim 1, wherein After updating the first control command based on the operating state of the temperature control rod to obtain the target control command parameter of the power control rod, the method further includes: Inputting the target control command parameter into a preset function generator to obtain rod speed information of the power control rod; The controlling the power control rod to operate according to the target control command parameter to regulate the average coolant temperature in the nuclear reactor includes: The power control rods are controlled to operate according to the rod speed information to regulate the average temperature of the coolant in the nuclear reactor.

7. The method according to claim 1, wherein The obtaining of the working state of the temperature control rod includes: obtaining rod position information of the temperature control rod and an average coolant temperature in the nuclear reactor; determining the operating state of the temperature control rod when the rod position information is outside a first preset threshold range and the average coolant temperature in the nuclear reactor is outside a second preset threshold range; The first preset threshold range and the second preset threshold range are different threshold ranges.

8. The method according to claim 7, wherein Before determining the working state of the temperature control rod when the rod position information is outside the first preset threshold range and the coolant average temperature is outside the second preset threshold range, the method further includes: Acquiring target monitoring information, wherein the target monitoring information includes an operating state of the temperature control rod and / or an operating state of the nuclear reactor; When the rod position information is outside a first preset threshold range and the coolant average temperature is outside a second preset threshold range, determining the working state of the temperature control rod includes: When the rod position information is outside a first preset threshold range, the coolant average temperature is outside a second preset threshold range, and the target monitoring information meets a preset condition, determining that the operating state of the temperature control rod is a first state, the first state is used to indicate that the control ability of the temperature control rod is abnormal; When the rod position information is outside the first preset threshold range, the coolant average temperature is outside the second preset threshold range, and the target monitoring information does not meet the preset conditions, the working state of the temperature control rod is determined to be the second state, and the second state is used to indicate that the control ability of the temperature control rod is normal.

9. The method according to claim 1, wherein The preset conditions include: The operating state of the temperature control rod is abnormal; and / or, The operating status of the nuclear reactor is normal.

10. A device for controlling the average temperature of a coolant in a nuclear reactor, characterized in that: Applicable to a nuclear reactor including temperature control rods and power control rods, the device comprises: an acquisition module, configured to acquire a working state of the temperature control rod and a first control command parameter of the power control rod, wherein the working state is used to indicate whether the control capability of the temperature control rod is normal; an updating module, configured to update the first control command parameter based on the working state of the temperature control rod to obtain a target control command parameter of the power control rod; A control module is used to control the power control rod to operate according to the target control command parameters to regulate the average temperature of the coolant in the nuclear reactor.

Images