Nuclear reactor processing method, device, equipment, storage medium and product

Abstract

The invention discloses a nuclear reactor processing method, device and equipment, a storage medium and a product. The method comprises the following steps: monitoring a reactor core of a nuclear reactor to obtain parameter values of monitoring parameters, wherein the parameters comprise at least one of linear power density, deviation nucleate boiling ratio and shutdown margin; under the condition that the parameter value of the reactor core monitoring parameter is located in a preset interval corresponding to the reactor core monitoring parameter, executing a first preset operation or a second preset operation so as to adjust the parameter value; the first preset operation comprises controlling the nuclear reactor to stop running; the second preset operation includes at least one of an operation for reducing the power of the nuclear reactor, an operation for limiting the insertion of a control rod of the nuclear reactor, and an operation for limiting the extraction of the control rod of the nuclear reactor. Whether the related operation of the nuclear reaction needs to be executed or not is judged through the parameter values of the reactor core monitoring parameters, various nuclear reactor adjusting modes are provided, the number of times of stopping the operation of the reactor can be effectively reduced, and the process of nuclear reaction work can be improved.

Description

Technical Field

[0001] The present application belongs to the field of nuclear engineering technology, and in particular, relates to a processing method, device, equipment, storage medium and product for a nuclear reactor. Background Art

[0002] A nuclear reactor, also known as an atomic reactor or reactor, is a device that can maintain a controllable self-sustaining chain nuclear fission reaction to achieve nuclear energy utilization.

[0003] At present, a safety threshold for nuclear reactor combustion is usually set in advance. When the actual value of nuclear reactor combustion reaches the safety threshold, the reactor stops operating, thereby restricting the nuclear reactor combustion to ensure safety.

[0004] However, directly stopping the operation of the reactor in the above-mentioned method will affect the progress of the nuclear reaction. Summary of the invention

[0005] The embodiments of the present application provide a processing method, device, equipment, storage medium and product in a nuclear reactor to solve the problems that affect the working progress of the nuclear reaction.

[0006] In a first aspect, an embodiment of the present application provides a method for processing a nuclear reactor, the method comprising:

[0007] Monitoring a core of a nuclear reactor to obtain parameter values ​​of core monitoring parameters, wherein the core monitoring parameters include at least one of a linear power density of the core, a deviation from nucleate boiling ratio of the core, and a shutdown margin of the core;

[0008] When the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, performing a first preset operation or a second preset operation to adjust the parameter value of the core monitoring parameter;

[0009] The first preset operation includes controlling the nuclear reactor to stop operating;

[0010] The second preset operation includes at least one of the following:

[0011] an operation for reducing the power of said nuclear reactor;

[0012] restricting control rod insertion operations of the nuclear reactor;

[0013] A control rod extraction operation of the nuclear reactor is restricted.

[0014] In one example, before monitoring the core of the nuclear reactor to obtain parameter values ​​of core monitoring parameters, the method further includes:

[0015] Acquiring operating state parameters corresponding to each group of simulated working conditions under multiple groups of simulated working conditions, each group of operating state parameters is used to configure the operating state of the nuclear reactor; the operating state parameters include the power of the core, the temperature of the core, the power distribution of the core, the position of the control rod of the core, and the xenon concentration of the core;

[0016] According to the operating state parameters corresponding to each group of simulated working conditions, the operating state of the nuclear reactor is simulated to obtain the simulated value of the core monitoring parameter corresponding to each group of operating state parameters;

[0017] Determining, according to the plurality of groups of simulation values, an operating boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter;

[0018] Determining a preset interval corresponding to the core monitoring parameter according to an operation boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter;

[0019] The preset interval corresponding to the core monitoring parameter is determined based on the operating boundary threshold and safety boundary threshold corresponding to the core monitoring parameter. The operating boundary threshold corresponding to the core monitoring parameter is used to determine that the parameter value of the core monitoring parameter is within the normal allowable range, and the safety boundary threshold corresponding to the core monitoring parameter is used to determine that the parameter value of the core monitoring parameter is within the safe range.

[0020] In one example, determining the preset interval corresponding to the core monitoring parameter according to the operation boundary threshold and the safety boundary threshold corresponding to the core monitoring parameter includes:

[0021] Determine an interval consisting of an operation boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter as a preset interval corresponding to the core monitoring parameter;

[0022] Dividing the preset interval according to the preset margin to obtain a first sub-interval and a second sub-interval;

[0023] When the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, performing a first preset operation or a second preset operation includes:

[0024] When the parameter value of the core monitoring parameter is within the first sub-interval, executing: controlling the nuclear reactor to stop operating;

[0025] When the parameter value of the core monitoring parameter is within the second sub-interval, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, an operation for limiting the insertion of the control rod of the nuclear reactor, and an operation for limiting the withdrawal of the control rod of the nuclear reactor.

[0026] In one example, when the parameter value of the core monitoring parameter includes the parameter value of the linear power density of the core, the minimum value of the first sub-interval corresponding to the linear power density of the core is greater than the maximum value of the second sub-interval;

[0027] In a case where the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, the maximum value of the first sub-interval corresponding to the deviation from nucleate boiling ratio of the core is smaller than the minimum value of the second sub-interval;

[0028] When the parameter value of the core monitoring parameter includes the parameter value of the shutdown margin of the core, the maximum value of the first sub-interval corresponding to the shutdown margin of the core is smaller than the minimum value of the second sub-interval.

[0029] In one example, when the parameter value of the core monitoring parameter is within the second sub-interval, performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, limiting the insertion operation of the control rod of the nuclear reactor, and limiting the withdrawal operation of the control rod of the nuclear reactor, including:

[0030] In the case where the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, if the parameter value of the deviation from nucleate boiling ratio of the core is located in the second sub-interval corresponding to the deviation from nucleate boiling ratio of the core, performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rods of the nuclear reactor;

[0031] In a case where the parameter value of the core monitoring parameter includes the parameter value of the shutdown margin of the core, if the parameter value of the shutdown margin of the core is located in the second sub-interval corresponding to the shutdown margin of the core, performing an operation of restricting the insertion of the control rod of the nuclear reactor;

[0032] In the case where the parameter value of the core monitoring parameter includes the parameter value of the linear power density of the core, if the parameter value of the linear power density of the core is located in the second sub-interval corresponding to the linear power density of the core, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rods of the nuclear reactor.

[0033] In one example, when the parameter value of the core monitoring parameter is within the second sub-interval, after performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, limiting the insertion operation of the control rod of the nuclear reactor, and limiting the withdrawal operation of the control rod of the nuclear reactor, the method further includes:

[0034] When the absolute value of the difference between the parameter value of the core monitoring parameter and the operating boundary threshold corresponding to the core monitoring parameter is greater than the preset threshold, a third preset operation is performed, and the third preset operation includes at least one of the following: an operation for increasing the power of the nuclear reactor, an operation for cancelling the insertion of the control rod that restricts the nuclear reactor, and an operation for cancelling the withdrawal of the control rod that restricts the nuclear reactor.

[0035] In a second aspect, an embodiment of the present application provides a processing device for a nuclear reactor, the device comprising:

[0036] A monitoring module, used for monitoring the core of the nuclear reactor to obtain parameter values ​​of core monitoring parameters, wherein the core monitoring parameters include at least one of the linear power density of the core, the deviation from nucleate boiling ratio of the core, and the shutdown margin of the core;

[0037] a processing module, configured to, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, perform a first preset operation or a second preset operation to adjust the parameter value of the core monitoring parameter;

[0038] The first preset operation includes controlling the nuclear reactor to stop operating;

[0039] The second preset operation includes at least one of the following:

[0040] an operation for reducing the power of said nuclear reactor;

[0041] restricting control rod insertion operations of the nuclear reactor;

[0042] A control rod extraction operation of the nuclear reactor is restricted.

[0043] In a third aspect, an embodiment of the present application provides an electronic device, the device comprising: a processor and a memory storing computer program instructions;

[0044] When the processor executes the computer program instructions, it implements the processing method in the nuclear reactor as described in the first aspect.

[0045] In a fourth aspect, an embodiment of the present application provides a computer storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the processing method of the nuclear reactor as described in the first aspect is implemented.

[0046] In a fifth aspect, an embodiment of the present application provides a computer program product. When instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the nuclear reactor processing method as described in the first aspect.

[0047] The processing method, device, equipment, storage medium and product of the nuclear reactor of the embodiment of the present application monitor the core of the nuclear reactor to obtain the parameter value of the core monitoring parameter, wherein the monitoring parameter includes at least one of the linear power density of the core, the DNBR of the core and the shutdown margin of the core. When the parameter value of the core monitoring parameter is within the corresponding preset interval, the nuclear reactor is controlled to stop operating, thereby adjusting the parameter value of the core monitoring parameter. Alternatively, when the parameter value of the core monitoring parameter is within the preset interval, a second preset operation is performed, wherein the second preset operation includes at least one of the following: an operation for reducing power, inserting a limit control rod into the core, and withdrawing a limit control rod, thereby adjusting the parameter value of the core monitoring parameter. Compared with the prior art, whether it is necessary to perform relevant operations of the nuclear reaction is determined by the parameter value of the core monitoring parameter, and multiple ways of adjusting the nuclear reactor are provided. Compared with the method of directly stopping the operation of the reactor, the number of times the reactor is stopped can be effectively reduced, and the progress of the nuclear reaction can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] Figure 1 It is a schematic flow chart of an embodiment of a method for treating a nuclear reactor provided by the present application;

[0050] Figure 2 is another schematic flow chart of an embodiment of the nuclear reactor treatment method provided by the present application;

[0051] Figure 3 It is a schematic diagram of the distribution of simulated values ​​of the deviation from nucleate boiling ratio of the core provided by the present application;

[0052] Figure 4 It is a schematic diagram of the relationship between the operating boundary threshold and the safety boundary threshold of the linear power density of the core provided by the present application;

[0053] Figure 5 It is a schematic diagram of the relationship between the operating boundary threshold and the safety boundary threshold of the deviation from the nucleate boiling ratio of the core provided by the present application;

[0054] Figure 6 It is a schematic diagram of the relationship between the operating boundary threshold and the safety boundary threshold of the shutdown margin of the core provided by the present application;

[0055] Figure 7 Another schematic flow chart of an embodiment of the method for treating a nuclear reactor provided by the present application is shown;

[0056] Figure 8 It is a structural schematic diagram of an embodiment of a processing device for a nuclear reactor provided by the present application;

[0057] Fig. 9 It is a schematic structural diagram of an embodiment of an electronic device provided by the present application. DETAILED DESCRIPTION

[0058] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] Introduction to professional terms:

[0061] The departure from nucleate boiling ratio (DNBR) is an important parameter in nuclear reactor design. It is used to ensure the safety of the reactor. It refers to the ratio of the critical departure from nucleate boiling heat flux density on the fuel element cladding to the actual heat flux density.

[0062] Linear power density refers to the power output per unit length of fuel rods in a reactor. It is an important parameter in reactor design and operation, and is used to evaluate the thermal hydraulic performance and safety of the reactor.

[0063] The definition of shutdown margin is the total amount of reactivity that would make the reactor subcritical or would reach subcriticality from the current state, assuming that all control rods in a bundle of the largest value are stuck outside the reactor and all other control rods are inserted into the reactor.

[0064] In the related art, a safety threshold of nuclear reactor combustion is usually preset. When the actual value of nuclear reactor combustion reaches the safety threshold, the reactor stops running, thereby restricting the nuclear reactor combustion to ensure safety.

[0065] However, directly stopping the operation of the reactor in the above-mentioned method will affect the progress of the nuclear reaction.

[0066] Based on this, the embodiments of the present application provide a method, device, equipment, storage medium and product for processing a nuclear reactor, which determines whether it is necessary to perform related operations of the nuclear reaction through the parameter values ​​of the core monitoring parameters, and provides multiple ways to adjust the nuclear reactor. Compared with the method of directly stopping the operation of the reactor, it can effectively reduce the number of times the reactor is stopped, and can improve the progress of the nuclear reaction.

[0067] In order to solve the technical problems in the related art, the embodiments of the present application provide a method, device, equipment, storage medium and product for processing a nuclear reactor. The following first introduces the method for processing a nuclear reactor provided by the embodiments of the present application.

[0068] Figure 1 A schematic flow chart of an embodiment of the method for treating a nuclear reactor provided by the present application is shown. The method for treating a nuclear reactor provided by the present application can be applied to electronic equipment.

[0069] like Figure 1 As shown, the nuclear reactor treatment method provided in the embodiment of the present application includes the following steps S101 to S102, wherein:

[0070] Step S101, monitoring the core of a nuclear reactor to obtain parameter values ​​of core monitoring parameters, where the core monitoring parameters include at least one of the core linear power density, the core deviation from nucleate boiling ratio, and the core shutdown margin.

[0071] In this embodiment, the core monitoring parameters are also safety critical parameters, and the monitoring parameters include at least one of the core linear power density, the core deviation from nucleate boiling ratio, and the core shutdown margin. The core of the nuclear reactor is monitored to obtain parameter values ​​of the core monitoring parameters. Specifically, the core of the nuclear reactor is monitored using an in-core or out-of-core detector to obtain parameter values ​​of the core linear power density, the core deviation from nucleate boiling ratio, and the core shutdown margin. It should be noted that the safety critical parameters are not limited to the above parameters, but can also be other key parameters of the core.

[0072] Step S102, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, performing a first preset operation or a second preset operation to adjust the parameter value of the core monitoring parameter;

[0073] The first preset operation includes controlling the nuclear reactor to shut down;

[0074] The second preset operation includes at least one of the following:

[0075] Operations for reducing the power of nuclear reactors;

[0076] Limiting control rod insertion operations in nuclear reactors;

[0077] Limiting the extraction of control rods from a nuclear reactor.

[0078] In this embodiment, it is determined whether the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter. When the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, the first preset operation or the second preset operation is performed to adjust the parameter value of the core monitoring parameter.

[0079] Specifically, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, the nuclear reactor is controlled to stop operating so as to adjust the parameter value of the core monitoring parameter; or, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, an operation for limiting the insertion of the control rod of the nuclear reactor, an operation for limiting the withdrawal of the control rod of the nuclear reactor, thereby adjusting the parameter value of the core monitoring parameter by performing the first preset operation.

[0080] In this embodiment, the core of the nuclear reactor is monitored to obtain parameter values ​​of core monitoring parameters, where the monitoring parameters include at least one of the core linear power density, the core deviation from nucleate boiling ratio DNBR and the core shutdown margin. When the parameter value of the core monitoring parameter is within the corresponding preset interval, the nuclear reactor is controlled to stop operating, thereby adjusting the parameter value of the core monitoring parameter. Alternatively, when the parameter value of the core monitoring parameter is within the preset interval, a second preset operation is performed, where the second preset operation includes at least one of the following: an operation for reducing power, inserting a limit control rod into the core and withdrawing a limit control rod, thereby adjusting the parameter value of the core monitoring parameter. Compared with the prior art, whether it is necessary to perform operations related to the nuclear reaction is determined by the parameter value of the core monitoring parameter, and multiple methods for adjusting the nuclear reactor are provided. Compared with the method of directly stopping the operation of the reactor, the number of times the reactor is stopped can be effectively reduced, and the progress of the nuclear reaction can be improved.

[0081] Figure 2 Another schematic flow chart of an embodiment of the method for treating a nuclear reactor provided by the present application is shown. The method for treating a nuclear reactor provided by the present application can be applied to electronic equipment.

[0082] like Figure 2 As shown, the nuclear reactor treatment method provided in the embodiment of the present application includes the following steps S201 to S206, wherein:

[0083] Step S201, obtaining operating state parameters corresponding to each group of simulated operating conditions under multiple groups of simulated operating conditions, each group of operating state parameters is used to configure the operating state of the nuclear reactor; the operating state parameters include core power, core temperature, core power distribution, position of core control rods and core xenon concentration.

[0084] In order to ensure the safety of nuclear power plants, nuclear reactors cannot exceed the boundaries or starting points of hypothetical accidents during normal operation. Once the boundaries or starting points are exceeded, if the accident process is superimposed, the consequences of the accident may exceed the design limit and lead to serious accident consequences. For example, during the operation of the reactor, it is necessary to monitor the axial power distribution of the core. When the axial power distribution of the core exceeds the operating limit range, a power reduction signal will be triggered to ensure the safety of the reactor operation.

[0085] However, the axial power distribution monitored above is an indirect parameter, which has no direct relationship with the accident safety limit. By limiting the axial power distribution, it will affect part of the reactor operating range, reduce the operating flexibility and increase a large amount of design iteration work. Therefore, in order to ensure the safety of the nuclear power plant, this scheme determines the operating boundary threshold and safety boundary threshold corresponding to the core monitoring parameters based on the simulation situation.

[0086] In this embodiment, operating state parameters corresponding to each group of simulated working conditions under multiple groups of simulated working conditions are obtained, wherein the operating state parameters include core power, core temperature, core power distribution, positions of core control rods, i.e., core rod positions, and core xenon concentration, i.e., xenon distribution. The core power distribution can make the shape of the core power distribution. These operating state parameters can cover various actual working conditions in the normal operation of the reactor. Each group of operating state parameters is used to configure the operating state of the nuclear reactor, thereby conducting a simulation experiment.

[0087] Step S202, simulating the operating state of the nuclear reactor according to the operating state parameters corresponding to each group of simulated working conditions, and obtaining simulated values ​​of core monitoring parameters corresponding to each group of operating state parameters.

[0088] In this embodiment, the operating state of the nuclear reactor is simulated according to each group of operating state parameters. Specifically, the simulation is performed using a simulation program or through pre-installed simulation software to obtain simulated values ​​of core monitoring parameters corresponding to each group of operating state parameters.

[0089] Step S203, determining the operating boundary threshold and the safety boundary threshold corresponding to the core monitoring parameters according to the multiple groups of simulation values.

[0090] In this embodiment, the operating boundary threshold and the safety boundary threshold corresponding to the core monitoring parameters are determined according to multiple groups of simulation values. For different core monitoring parameters, the size relationship between the operating boundary threshold and the safety boundary threshold is different. For example, for DNBR, the larger the parameter value of DNBR is, the better, and the smaller it is, the more dangerous it is. Therefore, for the operating boundary threshold and the safety boundary threshold corresponding to DNBR, the operating boundary threshold corresponding to DNBR is greater than its corresponding safety boundary threshold; for the linear power density of the core, the smaller the parameter value of the linear power density is, the better, and the larger it is, the more unfavorable it is for the nuclear reaction operation. Therefore, the safety boundary threshold corresponding to the linear power density is greater than its corresponding operating boundary threshold.

[0091] See also Figure 3 , Figure 3 : is a schematic diagram of the distribution of simulation values ​​of the deviation from nucleate boiling ratio of the core provided in the present application. For the simulation value of DNBR, each black dot represents the simulation value corresponding to each group of simulation conditions, and the operation boundary threshold (i.e. Figure 3 The operating boundary threshold may include all simulation values, or a preset number of simulation values ​​may be selected from all simulation values. According to the distribution of the simulation values, for example, the boundary simulation value of DNBR is identified, and the operating boundary threshold corresponding to DNBR is determined according to the boundary simulation value of DNBR, or the boundary simulation value of DNBR is used as the operating boundary threshold corresponding to DNBR, and further, the safety boundary threshold (i.e. Figure 3 In the safety boundary limit), specifically, according to the margin threshold corresponding to DNBR, the margin threshold is a margin threshold determined in advance based on the uncertainty of online monitoring and the parameter deterioration caused by the delay in the post-trigger mitigation action. For DNBR, the margin threshold corresponding to DNBR is added to the operating boundary threshold corresponding to DNBR to obtain the safety boundary threshold corresponding to DNBR. After obtaining the safety boundary threshold, it is necessary to use the safety boundary threshold to verify the accident analysis to ensure that the accident analysis requirements are met. After determining that the accident analysis requirements are met, the operating boundary threshold is set to the unit online monitoring and operation restriction system to monitor and restrict the operation of the nuclear reactor.

[0092] It should be noted that the linear power density of the core and the shutdown margin of the core are simulated according to the above method to obtain the operating boundary threshold and safety boundary threshold corresponding to each monitoring parameter.

[0093] Step S204, determining a preset interval corresponding to the core monitoring parameter according to the operating boundary threshold and the safety boundary threshold corresponding to the core monitoring parameter; the preset interval corresponding to the core monitoring parameter is determined according to the operating boundary threshold and the safety boundary threshold corresponding to the core monitoring parameter, the operating boundary threshold corresponding to the core monitoring parameter is used to determine that the parameter value of the core monitoring parameter is within a normal allowable range, and the safety boundary threshold corresponding to the core monitoring parameter is used to determine that the parameter value of the core monitoring parameter is within a safe range.

[0094] In this embodiment, the preset interval corresponding to the core monitoring parameter is determined based on the operating boundary value and the safety boundary value corresponding to the core monitoring parameter. Specifically, the interval formed by the operating boundary value and the safety boundary value corresponding to the core monitoring parameter is determined as the preset interval corresponding to the core monitoring parameter.

[0095] Among them, the operating boundary threshold value corresponding to the core parameter is used to determine that the parameter value of the core monitoring parameter is within the normal range. The normal range means that when the parameter value of the core monitoring parameter is within the normal range, there is no need to use the first preset operation to adjust it; the safety threshold value corresponding to the core monitoring parameter is used to determine that the core monitoring parameter value is within the safety range. The safety range means that the parameter value of the core monitoring parameter is within the safety range, but the nuclear reactor may continue to operate beyond the safety range. Measures are taken in advance to control it, that is, the parameter value is adjusted using the first preset operation.

[0096] Step S205, monitoring the core of the nuclear reactor to obtain parameter values ​​of core monitoring parameters, where the core monitoring parameters include at least one of the core linear power density, the core deviation from nucleate boiling ratio, and the core shutdown margin.

[0097] In this embodiment, the core monitoring parameters are also safety critical parameters, and the monitoring parameters include at least one of the core linear power density, the core deviation from nucleate boiling ratio, and the core shutdown margin. The core of the nuclear reactor is monitored to obtain parameter values ​​of the core monitoring parameters. Specifically, the core of the nuclear reactor is monitored using an in-core or out-of-core detector to obtain parameter values ​​of the core linear power density, the core deviation from nucleate boiling ratio, and the core shutdown margin. It should be noted that the safety critical parameters are not limited to the above parameters, but can also be other key parameters of the core.

[0098] Step S206, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, performing the first preset operation or the second preset operation to adjust the parameter value of the core monitoring parameter;

[0099] The first preset operation includes controlling the nuclear reactor to shut down;

[0100] The second preset operation includes at least one of the following: an operation for reducing the power of the nuclear reactor; an operation for limiting the insertion of the control rods of the nuclear reactor; an operation for limiting the withdrawal of the control rods of the nuclear reactor.

[0101] In this embodiment, the parameter value of the core monitoring parameter is monitored to see whether it is within the preset interval corresponding to the core monitoring parameter. When the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, the first preset operation or the second preset operation is performed to adjust the parameter value of the core monitoring parameter.

[0102] Specifically, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, the nuclear reactor is controlled to stop operating so as to adjust the parameter value of the core monitoring parameter; or, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, an operation for limiting the insertion of the control rod of the nuclear reactor, an operation for limiting the withdrawal of the control rod of the nuclear reactor, thereby adjusting the parameter value of the core monitoring parameter by performing the first preset operation.

[0103] In one example, determining a preset interval corresponding to the core monitoring parameter according to an operation boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter includes:

[0104] Determine an interval consisting of an operation boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter as a preset interval corresponding to the core monitoring parameter; divide the preset interval according to a preset margin to obtain a first sub-interval and a second sub-interval;

[0105] When the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, performing the first preset operation or the second preset operation includes:

[0106] When the parameter value of the core monitoring parameter is in the first sub-interval, the following operations are performed: controlling the nuclear reactor to stop operating; when the parameter value of the core monitoring parameter is in the second sub-interval, performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, limiting the insertion operation of the control rod of the nuclear reactor, and limiting the withdrawal operation of the control rod of the nuclear reactor.

[0107] In this embodiment, the interval formed by the operating boundary threshold and the safety boundary threshold corresponding to the core monitoring parameter is determined as the preset interval corresponding to the core monitoring parameter, and the preset interval is divided according to the preset margin. For example, the preset margin is set to 50%, the operating boundary threshold corresponding to the line power density is x, and the safety boundary threshold corresponding to the line power density is y. [x, y] is divided into 50%, one sub-interval is [x, (yx) / 2), and the other sub-interval is [(yx) / 2, y].

[0108] It should be noted that the preset margin is set according to actual needs and is not limited to the above values, but can also be other suitable values.

[0109] Specifically, when the parameter value of the core monitoring parameter is in the first sub-interval, the following is executed: the nuclear reactor is controlled to stop operating. For example, when the first sub-interval corresponding to the linear power density is [(yx) / 2, y] and the second sub-interval is [x, (yx) / 2), and the parameter value of the linear power density is in [(yx) / 2, y], the nuclear reactor is controlled to stop operating. For example, when the parameter value of DNBR is in the first sub-interval corresponding to DNBR, the nuclear reactor is controlled to stop operating; when the parameter value of the shutdown margin is in the first sub-interval corresponding to the shutdown margin, the nuclear reactor is controlled to stop operating. The core monitoring parameter is in the first sub-interval. As the nuclear reactor continues to operate, the core monitoring parameter is likely to continue to change, which may be dangerous. Therefore, the nuclear reactor is controlled to stop operating.

[0110] Specifically, when the parameter value of the core monitoring parameter is in the second sub-interval, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, an operation for limiting the insertion of the control rod of the nuclear reactor, and an operation for limiting the withdrawal of the control rod of the nuclear reactor. For example, when the parameter value of the linear power density is in [x, (yx) / 2), an operation for reducing the power of the nuclear reactor is performed. With respect to the shutdown margin, when the parameter value of the shutdown margin is in the second sub-interval, an operation for limiting the insertion of the control rod of the nuclear reactor is performed.

[0111] In one example, when the parameter value of the core monitoring parameter includes the parameter value of the linear power density of the core, the minimum value of the first sub-interval corresponding to the linear power density of the core is greater than the maximum value of the second sub-interval; when the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, the maximum value of the first sub-interval corresponding to the deviation from nucleate boiling ratio of the core is less than the minimum value of the second sub-interval; when the parameter value of the core monitoring parameter includes the parameter value of the shutdown margin of the core, the maximum value of the first sub-interval corresponding to the shutdown margin of the core is less than the minimum value of the second sub-interval.

[0112] Specifically, when the parameter value of the core monitoring parameter includes the parameter value of the core linear power density, the smaller the parameter value of the core linear power density is, the better. The core linear power density is directly related to the melting of the fuel rods. Figure 4 , Figure 4 In represents the magnitude relationship between the operating boundary threshold and the safety boundary threshold of the core's linear power density. The safety boundary threshold corresponding to the core's linear power density is greater than the operating boundary threshold. The safety boundary threshold and the operating boundary threshold constitute a preset interval, which is divided into a first sub-interval and a second sub-interval. The minimum value of the first sub-interval corresponding to the core's linear power density is greater than the maximum value of the second sub-interval. If the parameter value of the core's linear power density is in the first sub-interval, the nuclear reactor needs to be stopped; if the parameter value of the core's linear power density is in the second sub-interval, the parameter value of the core's linear power density needs to be adjusted. The safety boundary threshold is obtained through safety margin analysis, and the operating safety boundary threshold is obtained through safety margin analysis. In addition to the safety boundary threshold, a certain margin is also reserved to reduce the possibility of accidents.

[0113] Specifically, when the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, the larger the parameter value of the DNBR of the core, the better. The DNBR of the core is directly related to the burning of the cladding, see Figure 5 , Figure 5 It indicates the size relationship between the operating boundary threshold and the safety boundary threshold of the DNBR of the core. The operating boundary threshold corresponding to the DNBR of the core is greater than the safety boundary threshold. The safety boundary threshold and the operating boundary threshold constitute a preset interval, which is divided into a first sub-interval and a second sub-interval. The maximum value of the first sub-interval corresponding to the DNBR of the core is less than the minimum value of the second sub-interval. If the parameter value of the DNBR of the core is in the first sub-interval, the nuclear reactor needs to be stopped; if the parameter value of the DNBR of the core is in the second sub-interval, the parameter value of the linear power density of the core needs to be adjusted. The safety boundary threshold is obtained through safety margin analysis, and the operating safety boundary threshold is obtained through safety margin analysis. In addition to the safety boundary threshold, a certain margin is also reserved to reduce the possibility of accidents.

[0114] Specifically, when the parameter value of the core monitoring parameter includes the parameter value of the core shutdown margin, the larger the parameter value of the core shutdown margin, the better. The core shutdown margin is directly related to the main steam pipe rupture accident of the core, see Figure 6 , Figure 6Indicates the magnitude relationship between the operating boundary threshold and the safety boundary threshold corresponding to the shutdown margin of the core. The operating boundary threshold corresponding to the shutdown margin of the core is greater than the safety boundary threshold. The safety boundary threshold and the operating boundary threshold constitute a preset interval, and the preset interval is divided into a first sub-interval and a second sub-interval. The maximum value of the first sub-interval corresponding to the shutdown margin of the core is less than the minimum value of the second sub-interval. The parameter value of the shutdown margin of the core is located in the first sub-interval, and the nuclear reactor needs to be stopped; if the parameter value of the shutdown margin of the core is located in the second sub-interval, the parameter value of the shutdown margin needs to be adjusted. The safety boundary threshold is obtained through safety margin analysis, and the operating safety boundary threshold is obtained through safety margin analysis. In addition to the safety boundary threshold, a certain margin is also reserved to reduce the possibility of accidents.

[0115] In one example, when the parameter value of the core monitoring parameter is in the second sub-interval, performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, an operation for limiting the insertion of the control rod of the nuclear reactor, and an operation for limiting the withdrawal of the control rod of the nuclear reactor, including:

[0116] In the case where the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, if the parameter value of the deviation from nucleate boiling ratio of the core is located in the second sub-interval corresponding to the deviation from nucleate boiling ratio of the core, performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rods of the nuclear reactor;

[0117] When the parameter value of the core monitoring parameter includes the parameter value of the shutdown margin of the core, if the parameter value of the shutdown margin of the core is located in the second sub-interval corresponding to the shutdown margin of the core, performing a control rod insertion operation of the restricted nuclear reactor;

[0118] In the case where the parameter value of the core monitoring parameter includes the parameter value of the core's linear power density, if the parameter value of the core's linear power density is located in the second sub-interval corresponding to the core's linear power density, perform at least one of the following operations: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rods of the nuclear reactor.

[0119] In this embodiment, when the parameter value of the core monitoring parameter includes the parameter value of the core's DNBR, if the parameter value of the core's DNBR is located in the second sub-interval corresponding to the core's DNBR, the DNBR is directly related to the burning of the nuclear reactor's cladding. Therefore, in order to avoid the burning of the cladding, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, an operation for limiting the extension of the control rods of the nuclear reactor, specifically, the power of the nuclear reaction can be reduced by adjusting the power compensation rod, or other operations for reducing the power of the nuclear reactor.

[0120] Specifically, in the case where the parameter value of the core monitoring parameter includes the parameter value of the core shutdown margin, if the parameter value of the core shutdown margin is located in the second sub-interval corresponding to the core shutdown margin, the shutdown margin is directly related to the main steam pipe rupture accident of the core. Therefore, in order to avoid the main steam pipe rupture, the insertion operation of the control rods of the nuclear reactor is restricted, such as the insertion operation of the temperature rod, the power rod and other control rods of the nuclear reactor is restricted. The control rods of the nuclear reactor need to be inserted into the nuclear reactor in multiple steps. When the parameter value of the core shutdown margin is located in the second sub-interval corresponding to the core shutdown margin, the insertion operation of the control rods is temporarily stopped.

[0121] Specifically, in the case where the parameter value of the core monitoring parameter includes the parameter value of the linear power density of the core, if the parameter value of the linear power density of the core is in the second sub-interval corresponding to the linear power density of the core, the linear power density of the core is directly related to the melting of the fuel rods of the nuclear reactor. In order to avoid the melting of the fuel rods of the nuclear reactor, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, an operation for limiting the withdrawal of the control rods of the nuclear reactor, specifically, the power of the nuclear reaction can be reduced by adjusting the power compensation rods, or other operations for reducing the power of the nuclear reactor.

[0122] In one example, when the parameter value of the core monitoring parameter is in the second sub-interval, after performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, limiting the insertion of the control rods of the nuclear reactor, and an operation for limiting the withdrawal of the control rods of the nuclear reactor, the method further includes:

[0123] When the absolute value of the difference between the parameter value of the core monitoring parameter and the operating boundary threshold corresponding to the core monitoring parameter is greater than the preset threshold, a third preset operation is performed, and the third preset operation includes at least one of the following: an operation for increasing the power of the nuclear reactor, an operation for canceling the insertion of the control rod that restricts the nuclear reactor, and an operation for canceling the withdrawal of the control rod that restricts the nuclear reactor.

[0124] In this embodiment, after executing the second preset operation, the difference between the parameter value of the core monitoring parameter and the operating boundary threshold corresponding to the core monitoring parameter is calculated, the difference is compared with the preset threshold, and it is determined whether to execute the third preset operation based on the comparison result. Specifically, the third preset operation includes at least one of the following: an operation for increasing the power of the nuclear reactor, an operation for cancelling the insertion of the control rod that restricts the nuclear reactor, and an operation for cancelling the withdrawal of the control rod that restricts the nuclear reactor.

[0125] Specifically, when the parameter values ​​of the core monitoring parameters include the parameter value of DNBR, if the absolute value of the difference between the parameter value of DNBR and the operating boundary threshold corresponding to DNBR is greater than the preset threshold, an operation for increasing the power of the nuclear reactor is performed, and / or the operation of withdrawing the control rods that restrict the nuclear reactor is canceled. Specifically, the power of the nuclear reaction can be increased by adjusting the power compensation rods, or other operations for increasing the power of the nuclear reactor are performed.

[0126] Specifically, in the case where the parameter value of the core monitoring parameter includes the parameter value of the core shutdown margin, if the absolute value of the difference between the parameter values ​​of the core shutdown margin is greater than a preset threshold, the operation of cancelling the restriction on the insertion of the control rod of the nuclear reactor is performed, so that the control rod of the nuclear reactor continues to be inserted into the nuclear reactor.

[0127] Specifically, in the case where the parameter values ​​of the core monitoring parameters include the parameter values ​​of the linear power density of the core, if the absolute value of the difference in the parameter values ​​of the linear power density of the core is greater than a preset threshold, an operation for increasing the power of the nuclear reactor is performed, and / or the operation of withdrawing the control rods that restrict the nuclear reactor is canceled. Specifically, the power of the nuclear reaction can be increased by adjusting the power compensation rods, or other operations for increasing the power of the nuclear reactor are performed.

[0128] In this embodiment, compared with the prior art, it is determined whether it is necessary to perform relevant operations of the nuclear reaction by using the parameter values ​​of the core monitoring parameters, and a variety of methods for adjusting the nuclear reactor are provided. Compared with the method of directly stopping the operation of the reactor, the number of times the reactor operation is stopped can be effectively reduced, and the progress of the nuclear reaction can be improved; moreover, when the conditions are met, the operation of the reactor can be restored, effectively reducing the impact on the progress of the nuclear reaction.

[0129] The following is an example of the treatment method of the nuclear reactor provided in the embodiment of the present application. Figure 7 Another schematic flow chart of an embodiment of the method for treating a nuclear reactor provided by the present application is shown as follows: Figure 7 As shown, the treatment methods for nuclear reactors include:

[0130] Step S701, determining the barrier parameters of the safety analysis.

[0131] In this embodiment, according to the accident principle and design experience, the stuck parameters in the safety analysis are determined. For example, in a pressurized water reactor, the local linear power density of the core and the minimum DNBR value of the core can be used as the stuck factors, because these two quantities are directly related to the melting of the fuel rods and the burning of the cladding; for example, in a pressurized water reactor, the shutdown margin of the core can also be used as the stuck factor, because this parameter is directly related to the main steam pipe rupture accident of the core. The local linear power density of the core (i.e., the linear power density of the core mentioned above), the minimum DNBR value of the core (i.e., the deviation from nucleate boiling ratio of the core mentioned above) and the shutdown margin of the core.

[0132] Step S702, establishing a real-time monitoring process for the stuck parameters.

[0133] In this embodiment, the core measurement signal is used, or the core theoretical calculation parameters are superimposed and considered, to monitor the above-mentioned blocking parameters in real time (i.e., monitoring the core of the nuclear reactor as mentioned above). For example, the local linear power density of the core, the minimum DNBR of the core, and the shutdown margin of the core can be obtained by online monitoring of the core physics using the measurement signal of the in-core or out-of-core detector.

[0134] Step S703, establishing a mitigation action after the operating boundary limit is triggered.

[0135] In this embodiment, for the stuck parameters, the response actions after the respective operating limits (i.e., the operating boundary thresholds mentioned above) are triggered are determined, and the determination of the actions needs to be able to alleviate the deterioration of the stuck parameters, so that they return to within the operating limits or no longer deviate from the operating limits. For example, for the local linear power density of the core and the minimum DNBR value of the core, the power reduction operation (i.e., the operation for reducing the power of the nuclear reactor mentioned above) and, or the operation of limiting the withdrawal of the control rods of the nuclear reactor can be adopted. For example, for the shutdown margin, the operation of limiting the insertion of the control rods (i.e., the operation of limiting the insertion of the control rods of the nuclear reactor mentioned above) can be adopted to avoid the shutdown margin caused by the insertion of the rods from continuing to decrease.

[0136] Step S704, determining the operating boundary limit of the stuck parameter.

[0137] In this embodiment, based on the analysis of typical normal operation and transient operation, and after considering a certain operation margin, the operation boundary limit value of the gate parameter (ie, the operation boundary threshold value mentioned above) is determined.

[0138] Step S705, performing core analysis.

[0139] In this embodiment, core design and core analysis are performed according to the operation boundary limit given in step S704.

[0140] Step S706, determine whether the requirements are met, if not, adjust the operating boundary limit of the gate parameter and perform core analysis until the requirements are met.

[0141] In this embodiment, this process involves internal iteration of the core design process. It is determined whether the requirements are met. If the internal iteration does not meet the requirements, the operating boundary limit in step S704 needs to be appropriately adjusted, and then step S705 is iterated.

[0142] Optionally, after step S703, the following steps are also included:

[0143] Step S707, determining the safety boundary limit of the stuck parameter.

[0144] In this embodiment, in addition to the operating boundary limit of the parameter, the safety boundary limit of the parameter (i.e., the safety boundary threshold mentioned above) is determined by taking into account the uncertainty of online monitoring of the parameter and the parameter deterioration caused by the delay in mitigation action after the operating boundary limit is triggered.

[0145] Step S708, performing accident safety analysis.

[0146] In this embodiment, based on the safety boundary limit determined in step S707, the safety analysis of the accident process is completed and the margin of the accident analysis is determined.

[0147] Step S709, determine whether the requirements are met; if not, adjust the safety boundary limit of the gate parameter and perform accident safety analysis until the requirements are met.

[0148] In this embodiment, this process involves internal iteration of the accident analysis process. It is determined whether the requirements are met. If the internal iteration does not meet the requirements, the safety boundary limit in step S707 needs to be appropriately adjusted, and then the iteration of S708 is performed.

[0149] The above method is proposed to solve the problems of complex iterative work scope and large workload caused by the coupled iteration of core design and safety analysis in the nuclear reactor design process. Through real-time monitoring of key parameters of safety analysis, operating boundary limits and safety analysis boundary limits of the above parameters are established. At the same time, mitigation actions after the operating limit boundary limits are triggered are established, so as to appropriately decouple the core design and safety analysis and improve the design efficiency.

[0150] The processing method for a nuclear reactor provided in the embodiment of the present application may be executed by a processing device for a nuclear reactor. The processing device for a nuclear reactor provided in the embodiment of the present application is described by taking the processing method for a nuclear reactor performed by a processing device for a nuclear reactor as an example.

[0151] Figure 8A schematic structural diagram of a nuclear reactor processing device provided in an embodiment of the present application is shown.

[0152] like Figure 8 As shown, the processing device 80 of the nuclear reactor of the present application includes:

[0153] The monitoring module 801 is used to monitor the core of the nuclear reactor to obtain the parameter value of the core monitoring parameter, and the core monitoring parameter includes at least one of the linear power density of the core, the deviation from nucleate boiling ratio of the core, and the shutdown margin of the core; the processing module 802 is used to perform a first preset operation or a second preset operation to adjust the parameter value of the core monitoring parameter when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter; the first preset operation includes controlling the nuclear reactor to stop operating;

[0154] The second preset operation includes at least one of the following:

[0155] Operations for reducing the power of nuclear reactors;

[0156] Limiting control rod insertion operations in nuclear reactors;

[0157] Limiting the extraction of control rods from a nuclear reactor.

[0158] In one example, the processing module 802 is also used to obtain operating state parameters corresponding to each group of simulated conditions under multiple groups of simulated conditions, each group of operating state parameters is used to configure the operating state of the nuclear reactor; the operating state parameters include core power, core temperature, core power distribution, position of core control rods and core xenon concentration; according to the operating state parameters corresponding to each group of simulated conditions, the operating state of the nuclear reactor is simulated to obtain simulated values ​​of core monitoring parameters corresponding to each group of operating state parameters; according to the multiple groups of simulation values, the operating boundary threshold and safety boundary threshold corresponding to the core monitoring parameters are determined; according to the operating boundary threshold and safety boundary threshold corresponding to the core monitoring parameters, the preset interval corresponding to the core monitoring parameters is determined; the preset interval corresponding to the core monitoring parameters is determined according to the operating boundary threshold and safety boundary threshold corresponding to the core monitoring parameters, the operating boundary threshold corresponding to the core monitoring parameters is used to determine that the parameter value of the core monitoring parameters is within the normal allowable range, and the safety boundary threshold corresponding to the core monitoring parameters is used to determine that the parameter value of the core monitoring parameters is within the safe range.

[0159] In one example, the processing module 802 is further used to determine the interval formed by the operating boundary threshold and the safety boundary threshold corresponding to the core monitoring parameter as the preset interval corresponding to the core monitoring parameter; and divide the preset interval according to the preset margin to obtain a first sub-interval and a second sub-interval. The processing module 802 is also used to, when the parameter value of the core monitoring parameter is in the first sub-interval, execute: control the nuclear reactor to stop operating; when the parameter value of the core monitoring parameter is in the second sub-interval, execute at least one of the following operations: an operation for reducing the power of the nuclear reactor, limiting the insertion operation of the control rod of the nuclear reactor, and limiting the withdrawal operation of the control rod of the nuclear reactor.

[0160] In one example, the processing module 802 is further used to, when the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, if the parameter value of the deviation from nucleate boiling ratio of the core is located in the second sub-interval corresponding to the deviation from nucleate boiling ratio of the core, perform an operation for reducing the power of the nuclear reactor. The processing module 802 is further used to, when the parameter value of the core monitoring parameter includes the parameter value of the shutdown margin of the core, if the parameter value of the shutdown margin of the core is located in the second sub-interval corresponding to the shutdown margin of the core, perform an operation for limiting the insertion of the control rods of the nuclear reactor. The processing module 802 is further used to, when the parameter value of the core monitoring parameter includes the parameter value of the linear power density of the core, if the parameter value of the linear power density of the core is located in the second sub-interval corresponding to the linear power density of the core, perform an operation for reducing the power of the nuclear reactor.

[0161] In one example, the processing module 802 is further used to, when the parameter value of the core monitoring parameter includes the parameter value of the core's deviation from nucleate boiling ratio, if the parameter value of the core's deviation from nucleate boiling ratio is located in the second sub-interval corresponding to the core's deviation from nucleate boiling ratio, perform at least one of the following operations: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rod of the nuclear reactor; when the parameter value of the core monitoring parameter includes the parameter value of the core's shutdown margin, if the parameter value of the core's shutdown margin is located in the second sub-interval corresponding to the core's shutdown margin, perform the operation of limiting the insertion of the control rod of the nuclear reactor; when the parameter value of the core monitoring parameter includes the parameter value of the core's linear power density, if the parameter value of the core's linear power density is located in the second sub-interval corresponding to the core's linear power density, perform at least one of the following operations: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rod of the nuclear reactor.

[0162] In one example, the processing module 802 is also used to perform a third preset operation when the absolute value of the difference between the parameter value of the core monitoring parameter and the operating boundary threshold corresponding to the core monitoring parameter is greater than the preset threshold. The third preset operation includes at least one of the following: an operation for increasing the power of the nuclear reactor, an operation for cancelling the insertion of the control rod that restricts the nuclear reactor, and an operation for cancelling the withdrawal of the control rod that restricts the nuclear reactor.

[0163] The processing device for a nuclear reactor provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0164] Fig. 9 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.

[0165] The electronic device may include a processor 901 and a memory 902 storing computer program instructions.

[0166] Specifically, the processor 901 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0167] The memory 902 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 902 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, the memory 902 may include a removable or non-removable (or fixed) medium. In appropriate cases, the memory 902 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 902 is a non-volatile solid-state memory.

[0168] In some embodiments, the memory 902 may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to an aspect of the present disclosure.

[0169] The processor 901 implements any one of the nuclear reactor processing methods in the above embodiments by reading and executing computer program instructions stored in the memory 902 .

[0170] In one example, the electronic device may further include a communication interface 909 and a bus 910. Fig. 9 As shown, the processor 901, the memory 902, and the communication interface 909 are connected via a bus 910 and communicate with each other.

[0171] The communication interface 909 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0172] Bus 910 includes hardware, software or both, and the parts of online data flow billing equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front-end bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 910 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the present application considers any suitable bus or interconnection.

[0173] The electronic device can execute the processing method of the nuclear reactor in the embodiment of the present application, thereby realizing the combination Figure 1 and Figure 8 A method and apparatus for processing a nuclear reactor is described.

[0174] In addition, in combination with the processing method of the nuclear reactor in the above embodiment, the embodiment of the present application can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by the processor, the processing method of the nuclear reactor in the above embodiment is implemented.

[0175] In combination with the nuclear reactor processing method in the above embodiment, an embodiment of the present application may provide a computer program product. When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device implements the nuclear reactor processing method in the above embodiment.

[0176] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0177] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0178] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0179] Aspects of the present disclosure are described above with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It can also be understood that each box in the block diagram and / or flowchart and the combination of boxes in the block diagram and / or flowchart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0180] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A method for treating a nuclear reactor, characterized in that: include: Monitoring a core of a nuclear reactor to obtain parameter values ​​of core monitoring parameters, wherein the core monitoring parameters include at least one of a linear power density of the core, a deviation from nucleate boiling ratio of the core, and a shutdown margin of the core; When the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, performing a first preset operation or a second preset operation to adjust the parameter value of the core monitoring parameter; The first preset operation includes controlling the nuclear reactor to stop operating; The second preset operation includes at least one of the following: an operation for reducing the power of said nuclear reactor; restricting control rod insertion operations of the nuclear reactor; A control rod extraction operation of the nuclear reactor is restricted.

2. The method according to claim 1, characterized in that Before monitoring the core of the nuclear reactor to obtain the parameter value of the core monitoring parameter, the method further includes: Acquiring operating state parameters corresponding to each group of simulated working conditions under multiple groups of simulated working conditions, each group of operating state parameters is used to configure the operating state of the nuclear reactor; the operating state parameters include the power of the core, the temperature of the core, the power distribution of the core, the position of the control rod of the core, and the xenon concentration of the core; According to the operating state parameters corresponding to each group of simulated working conditions, the operating state of the nuclear reactor is simulated to obtain the simulated value of the core monitoring parameter corresponding to each group of operating state parameters; Determining, according to the plurality of groups of simulation values, an operating boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter; Determining a preset interval corresponding to the core monitoring parameter according to an operation boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter; The preset interval corresponding to the core monitoring parameter is determined based on the operating boundary threshold and safety boundary threshold corresponding to the core monitoring parameter. The operating boundary threshold corresponding to the core monitoring parameter is used to determine that the parameter value of the core monitoring parameter is within the normal allowable range, and the safety boundary threshold corresponding to the core monitoring parameter is used to determine that the parameter value of the core monitoring parameter is within the safe range.

3. The method according to claim 2, characterized in that The step of determining the preset interval corresponding to the core monitoring parameter according to the operation boundary threshold and the safety boundary threshold corresponding to the core monitoring parameter includes: Determine an interval consisting of an operation boundary threshold and a safety boundary threshold corresponding to the core monitoring parameter as a preset interval corresponding to the core monitoring parameter; Dividing the preset interval according to the preset margin to obtain a first sub-interval and a second sub-interval; When the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, performing a first preset operation or a second preset operation includes: When the parameter value of the core monitoring parameter is within the first sub-interval, executing: controlling the nuclear reactor to stop operating; When the parameter value of the core monitoring parameter is within the second sub-interval, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, an operation for limiting the insertion of the control rod of the nuclear reactor, and an operation for limiting the withdrawal of the control rod of the nuclear reactor.

4. The method according to claim 3, characterized in that In a case where the parameter value of the core monitoring parameter includes the parameter value of the linear power density of the core, the minimum value of the first sub-interval corresponding to the linear power density of the core is greater than the maximum value of the second sub-interval; In a case where the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, the maximum value of the first sub-interval corresponding to the deviation from nucleate boiling ratio of the core is smaller than the minimum value of the second sub-interval; When the parameter value of the core monitoring parameter includes the parameter value of the shutdown margin of the core, the maximum value of the first sub-interval corresponding to the shutdown margin of the core is smaller than the minimum value of the second sub-interval.

5. The method according to claim 3, characterized in that: When the parameter value of the core monitoring parameter is within the second sub-interval, performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, limiting the insertion operation of the control rod of the nuclear reactor, and limiting the withdrawal operation of the control rod of the nuclear reactor, including: In the case where the parameter value of the core monitoring parameter includes the parameter value of the deviation from nucleate boiling ratio of the core, if the parameter value of the deviation from nucleate boiling ratio of the core is located in the second sub-interval corresponding to the deviation from nucleate boiling ratio of the core, performing at least one of the following operations: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rods of the nuclear reactor; In a case where the parameter value of the core monitoring parameter includes the parameter value of the shutdown margin of the core, if the parameter value of the shutdown margin of the core is located in the second sub-interval corresponding to the shutdown margin of the core, performing an operation of restricting the insertion of the control rod of the nuclear reactor; In the case where the parameter value of the core monitoring parameter includes the parameter value of the linear power density of the core, if the parameter value of the linear power density of the core is located in the second sub-interval corresponding to the linear power density of the core, at least one of the following operations is performed: an operation for reducing the power of the nuclear reactor, and limiting the operation of withdrawing the control rods of the nuclear reactor.

6. The method according to claim 3, characterized in that After performing at least one of the following operations when the parameter value of the core monitoring parameter is within the second sub-interval: an operation for reducing the power of the nuclear reactor, limiting the insertion operation of the control rod of the nuclear reactor, and limiting the withdrawal operation of the control rod of the nuclear reactor, the method further comprises: When the absolute value of the difference between the parameter value of the core monitoring parameter and the operating boundary threshold corresponding to the core monitoring parameter is greater than the preset threshold, a third preset operation is performed, and the third preset operation includes at least one of the following: an operation for increasing the power of the nuclear reactor, an operation for cancelling the insertion of the control rod that restricts the nuclear reactor, and an operation for cancelling the withdrawal of the control rod that restricts the nuclear reactor.

7. A processing device for a nuclear reactor, characterized in that: The device comprises: A monitoring module, used for monitoring the core of the nuclear reactor to obtain parameter values ​​of core monitoring parameters, wherein the core monitoring parameters include at least one of the linear power density of the core, the deviation from nucleate boiling ratio of the core, and the shutdown margin of the core; a processing module, configured to, when the parameter value of the core monitoring parameter is within the preset interval corresponding to the core monitoring parameter, perform a first preset operation or a second preset operation to adjust the parameter value of the core monitoring parameter; The first preset operation includes controlling the nuclear reactor to stop operating; The second preset operation includes at least one of the following: an operation for reducing the power of said nuclear reactor; restricting control rod insertion operations of the nuclear reactor; A control rod extraction operation of the nuclear reactor is restricted.

8. An electronic device, characterized in that: The electronic device comprises: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the nuclear reactor processing method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the method for processing a nuclear reactor according to any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the nuclear reactor processing method as described in any one of claims 1 to 6.

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