Method, device, equipment and medium for optimizing safety injection logic test of nuclear power plant

Abstract

The application relates to the technical field of periodic testing, and discloses a safety injection logic test optimization method, device, equipment and medium for a nuclear power station. The method comprises the following steps: in the process of performing a safety injection logic test on the nuclear power station, if it is detected that a fault scene simulation of the nuclear power station is ended, a small-flow electric valve on a small-flow pipeline of an RCV pump of the nuclear power station is controlled to be started, and after the small-flow electric valve is started, an adjustable isolation valve is controlled to be adjusted from a closed state to a fully open state within a set opening time range, so that the adjustable isolation valve is used for slowly injecting reactor coolant into a primary pump No. 1 sealing leakage flow pipeline of the nuclear power station through the small-flow pipeline of the RCV pump, wherein the adjustable isolation valve is installed on the small-flow pipeline of the RCV pump and located upstream of the small-flow electric valve. The method can improve the safety of nuclear power station equipment operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of periodic test, in particular to a safety injection logic test optimization method, device, equipment and medium for a nuclear power plant. BACKGROUND

[0002] In order to ensure the safety of the operation of the equipment in the nuclear power plant, it is necessary to simulate the fault scene of the nuclear power plant periodically and handle the fault scene. After the fault handling is completed, the RCV pump small flow pipeline needs to be re-operated to ensure the reliable operation of the RCV pump, that is, when a fault of the nuclear power plant is found, the electric valve (the electric valve on the RCV pump small flow pipeline) is automatically closed, and after it is determined that the fault handling is completed, the electric valve is opened, and then the RCV pump small flow pipeline is re-operated to ensure the reliable operation of the RCV pump.

[0003] However, in the current safety injection logic test of the nuclear power plant, due to the excessive pressure of the coolant upstream of the electric valve, when the electric valve is opened, the equipment downstream of the electric valve is easily damaged, and improvement is urgently needed. SUMMARY

[0004] Therefore, it is necessary to provide a safety injection logic test optimization method, device, equipment and medium for a nuclear power plant, which can improve the safety of the operation of the equipment in the nuclear power plant.

[0005] In a first aspect, the present application provides a safety injection logic test optimization method for a nuclear power plant, comprising:

[0006] In the process of performing the safety injection logic test on the nuclear power plant, if it is detected that the simulation of the fault scene of the nuclear power plant is completed, a small flow electric valve on an RCV pump small flow pipeline of the nuclear power plant is controlled to start;

[0007] After the small flow electric valve starts, a controllable isolation valve is controlled to adjust from a closed state to a fully open state within a set opening time range, so as to slowly inject reactor coolant into a main pump No. 1 seal leakage flow pipeline of the nuclear power plant through the RCV pump small flow pipeline;

[0008] The controllable isolation valve is installed on the RCV pump small flow pipeline and located upstream of the small flow electric valve.

[0009] In one embodiment, controlling the controllable isolation valve to adjust from the closed state to the fully open state within the set opening time range comprises:

[0010] According to the total opening degree of the controllable isolation valve and the set opening time range, the opening speed is determined; and the controllable isolation valve is controlled to adjust from the closed state to the fully open state within the set opening time range at the opening speed.

[0011] In one of the embodiments, the method further comprises:

[0012] The adjustable isolation valve is controlled to open at a speed in a set opening duration range, and the operating condition of the equipment connected to the main pump No. 1 seal leakage flow pipeline is obtained in the process of adjusting from the closed state to the fully open state; and the opening speed is adjusted according to the operating condition.

[0013] In one of the embodiments, the set opening duration range comprises a lower limit value of the opening duration and an upper limit value of the opening duration; wherein the lower limit value of the opening duration is equal to or greater than 30S, and the upper limit value of the opening duration is less than or equal to 5min.

[0014] In one of the embodiments, if it is detected that the fault scenario simulation of the nuclear power plant is ended, the method further comprises:

[0015] The adjustable isolation valve is controlled to close; and the nuclear power plant is simulated for a fault scenario in the case that the adjustable isolation valve is in the closed state.

[0016] In one of the embodiments, the method further comprises:

[0017] During the simulation of the fault scenario of the nuclear power plant, real-time fault warning information is obtained;

[0018] Correspondingly, detecting that the fault scenario simulation of the nuclear power plant is ended comprises:

[0019] If the fault warning information is not obtained within a preset acquisition duration, it is determined that the fault scenario simulation of the nuclear power plant is ended.

[0020] In a second aspect, the application further provides a safety injection logic test optimization device for a nuclear power plant. The device comprises:

[0021] A first starting module is configured to, during the safety injection logic test of the nuclear power plant, control a small-flow electric valve on a small-flow pipeline of an RCV pump of the nuclear power plant to start if it is detected that the fault scenario simulation of the nuclear power plant is ended.

[0022] A second starting module is configured to, after the small-flow electric valve starts, control an adjustable isolation valve to adjust from a closed state to a fully open state in a set opening duration range, so as to slowly inject reactor coolant into a main pump No. 1 seal leakage flow pipeline of the nuclear power plant through the small-flow pipeline of the RCV pump.

[0023] The adjustable isolation valve is installed on the small-flow pipeline of the RCV pump and is located upstream of the small-flow electric valve.

[0024] In a third aspect, the present application also provides a computer device. The computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0025] In the process of performing the safety injection logic experiment on the nuclear power plant, if it is detected that the simulation of the failure scenario of the nuclear power plant ends, the small flow electric valve on the RCV pump small flow pipeline of the nuclear power plant is controlled to start;

[0026] After the small flow electric valve starts, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within a set opening time range, so as to slowly inject the reactor coolant into the main pump No. 1 seal leakage flow pipeline of the nuclear power plant through the RCV pump small flow pipeline;

[0027] The adjustable isolation valve is installed on the RCV pump small flow pipeline and is located upstream of the small flow electric valve.

[0028] In a fourth aspect, the present application also provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0029] In the process of performing the safety injection logic experiment on the nuclear power plant, if it is detected that the simulation of the failure scenario of the nuclear power plant ends, the small flow electric valve on the RCV pump small flow pipeline of the nuclear power plant is controlled to start;

[0030] After the small flow electric valve starts, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within a set opening time range, so as to slowly inject the reactor coolant into the main pump No. 1 seal leakage flow pipeline of the nuclear power plant through the RCV pump small flow pipeline;

[0031] The adjustable isolation valve is installed on the RCV pump small flow pipeline and is located upstream of the small flow electric valve.

[0032] In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program, and the computer program is executed by a processor to implement the following steps:

[0033] In the process of performing the safety injection logic experiment on the nuclear power plant, if it is detected that the simulation of the failure scenario of the nuclear power plant ends, the small flow electric valve on the RCV pump small flow pipeline of the nuclear power plant is controlled to start;

[0034] After the small flow electric valve starts, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within a set opening time range, so as to slowly inject the reactor coolant into the main pump No. 1 seal leakage flow pipeline of the nuclear power plant through the RCV pump small flow pipeline;

[0035] The adjustable isolation valve is installed on the RCV pump small flow pipeline and is located upstream of the small flow electric valve.

[0036] The safety injection logic test optimization method, device, equipment and medium of the nuclear power plant introduce the adjustable isolation valve, in the process of carrying out the safety injection logic experiment on the nuclear power plant, if it is detected that the fault scene simulation of the nuclear power plant ends, the small flow electric valve on the small flow pipeline of the RCV pump of the nuclear power plant is started, and after the small flow electric valve is started, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within the set opening time range, compared with the related art, through the slow opening of the adjustable isolation valve, the reactor coolant can be slowly injected into the main pump No. 1 seal leakage flow pipeline of the nuclear power plant through the RCV pump small flow pipeline, the safety of the equipment on the main pump No. 1 seal leakage flow pipeline is ensured, and then the safe operation of the nuclear power plant is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1A It is a flowchart of the safety injection logic test optimization method of the nuclear power plant in one embodiment;

[0038] Figure 1B It is a schematic diagram of the reactor coolant injection method in one embodiment;

[0039] Figure 2 It is a flowchart of opening the adjustable isolation valve in one embodiment;

[0040] Figure 3 It is a flowchart of the safety injection logic test optimization method of the nuclear power plant in another embodiment;

[0041] Figure 4 It is a structural block diagram of the safety injection logic test optimization device of the nuclear power plant in one embodiment;

[0042] Figure 5 It is a structural block diagram of the safety injection logic test optimization device of the nuclear power plant in another embodiment;

[0043] Figure 6 It is an internal structure diagram of the computer equipment in one embodiment. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0045] In order to ensure the safety of the operation of the equipment in the nuclear power plant, it is necessary to simulate the failure scenario of the nuclear power plant regularly and handle the failure scenario. After the failure handling is completed, the RCV pump small flow pipeline needs to be re-operated, and then the nuclear power plant safety injection logic test appears, that is, when the failure of the nuclear power plant is found, the electric valve (the electric valve on the RCV pump small flow pipeline) is automatically closed, and after the completion of the failure handling, the electric valve is opened, and then the RCV pump small flow pipeline is re-operated to realize the normal operation of the nuclear power plant.

[0046] In the current nuclear power plant safety injection logic test, because the electric valve on the RCV pump small flow pipeline opens quickly, the coolant will quickly inject the main pump No. 1 seal leakage flow pipeline connected thereto, generating a large impact force, which causes the main pump No. 1 seal wide-range flowmeter diaphragm on the main pump No. 1 seal leakage flow pipeline to be damaged.

[0047] In addition, in the case that the main pump No. 1 seal leakage flow pipeline contains gas, the rapid injection of the coolant may cause a water hammer phenomenon, which has a great influence on the safe operation of the nuclear power plant.

[0048] Based on this, in one embodiment, as shown in Figure 1A A nuclear power plant safety injection logic test optimization method is provided. The method is applied to a control device in a nuclear power plant control system, and includes the following steps:

[0049] S101, in the process of the safety injection logic test of the nuclear power plant, if it is detected that the failure scenario simulation of the nuclear power plant is completed, the small flow electric valve on the RCV pump small flow pipeline of the nuclear power plant is started.

[0050] The RCV pump small flow pipeline refers to the recirculation flow pipeline used to maintain the long-term operation of the RCV pump in the nuclear power plant.

[0051] Optionally, in the process of the safety injection logic test of the nuclear power plant, if it is detected that the failure simulation of the nuclear power plant is completed, it means that the reactor coolant (for example, water) needs to be re-injected into the nuclear power plant main pump to realize the stable operation of the nuclear power plant.

[0052] Further, when it is determined that the RCV pump small flow needs to be re-operated, the small flow electric valve on the RCV pump small flow pipeline of the nuclear power plant can be automatically opened.

[0053] In order to more accurately determine whether the simulation of the failure scenario of the nuclear power plant ends, when the failure scenario of the nuclear power plant is formed, the failure warning information can be acquired in real time, that is, the failure warning information is acquired in real time in the process of simulating the failure scenario of the nuclear power plant. The failure warning information refers to alarm information for prompting that a failure has occurred, and can be displayed through an indicator light on a control system.

[0054] It can be understood that if the failure warning information is not acquired within the preset acquisition time length, it is determined that the simulation of the failure scenario of the nuclear power plant ends. The preset acquisition time length refers to a preset time threshold. For example, the preset acquisition time length is 3 seconds, that is, if the failure warning information is not acquired within 3 seconds, it is determined that the simulation of the failure scenario of the nuclear power plant ends.

[0055] S102, after the small-flow electric valve is started, the adjustable isolation valve is controlled to adjust from a closed state to a fully open state within a set opening time length range, so as to slowly inject the reactor coolant into the No. 1 seal leakage flow pipeline of the main pump of the nuclear power plant through the RCV pump small-flow pipeline.

[0056] The adjustable isolation valve is installed on the RCV pump small-flow pipeline and is located upstream of the small-flow electric valve, that is, the reactor coolant needs to flow through the adjustable isolation valve first and then flow through the small-flow electric valve. The adjustable isolation valve refers to an isolation valve with adjustable opening speed. The opening time length range refers to a time length range taken by the adjustable isolation valve to adjust from a non-opening state to a fully open state.

[0057] Optionally, after the small-flow electric valve is opened, the adjustable isolation valve can be controlled to slowly open from a non-opening state according to a preset opening time length range, so as to ensure that the reactor coolant flowing through the RCV pump small-flow pipeline can flow slowly to the No. 1 seal leakage flow pipeline of the main pump.

[0058] For example, the arrow direction in Figure 1B , Figure 1B is the flow direction of the reactor coolant, the valve RCV221VP is the adjustable isolation valve, and the valve RCV222VP is the small-flow electric valve. In the process of performing the safety injection logic experiment on the nuclear power plant, if it is detected that the simulation of the failure scenario of the nuclear power plant ends, the small-flow electric valve RCV222VP on the RCV pump small-flow pipeline of the nuclear power plant is controlled to start. Further, after the small-flow electric valve RCV222VP is started, the adjustable isolation valve RCV221VP is controlled to adjust from a closed state to a fully open state within a set opening time length range, so as to achieve safety injection of the reactor coolant.

[0059] It can be understood that, since the opening speed of the small-flow electric valve is uncontrollable, in the related art, the reactor coolant is only injected into the primary pump No. 1 seal leakage flow pipeline through the small-flow electric valve, which is easy to cause damage to the equipment on the primary pump No. 1 seal leakage flow pipeline, and in the embodiment, by installing the adjustable isolation valve in front of the small-flow electric valve, before the reactor coolant is injected, the reactor coolant is located in front of the adjustable isolation valve, at this time, the small-flow electric valve is directly opened, and then the adjustable isolation valve is controlled to be slowly opened, which can effectively alleviate the impact of the reactor coolant injection, and ensure the safe operation of the nuclear power plant.

[0060] In the safety injection logic test optimization method of the nuclear power plant, the adjustable isolation valve is introduced, and in the process of performing the safety injection logic test on the nuclear power plant, if it is detected that the fault scene simulation of the nuclear power plant is ended, the small-flow electric valve on the RCV pump small-flow pipeline of the nuclear power plant is started, and after the small-flow electric valve is started, the adjustable isolation valve is controlled to be adjusted from the closed state to the fully open state within a set opening time range. Compared with the related art, by slowly opening the adjustable isolation valve, the reactor coolant can be slowly injected into the primary pump No. 1 seal leakage flow pipeline of the nuclear power plant through the RCV pump small-flow pipeline, which ensures the safety of the equipment on the primary pump No. 1 seal leakage flow pipeline, and further ensures the safe operation of the nuclear power plant.

[0061] In order to ensure the safety injection of the reactor coolant, on the basis of the above-mentioned embodiment, in the present embodiment, an opening mode of the adjustable isolation valve is provided, as shown in Figure 2 , which specifically includes the following steps:

[0062] S201, determining the opening speed according to the total opening degree of the adjustable isolation valve and the set opening time range.

[0063] The opening speed refers to the speed of opening the adjustable isolation valve.

[0064] Optionally, before adjusting the adjustable isolation valve, the opening time can be preset, and then the opening speed of the adjustable isolation valve is determined according to the total opening degree of the adjustable isolation valve at the opening time and the preset opening time.

[0065] Alternatively, the range of the opening time can be preset, wherein the set opening time range includes a lower limit value of the opening time and an upper limit value of the opening time, and when adjusting the adjustable isolation valve, the opening speed range of the adjustable isolation valve can be determined according to the lower limit value of the opening time and the upper limit value of the opening time.

[0066] It can be understood that, in order to avoid the opening speed of the adjustable isolation valve being too fast, the lower limit value of the opening time can be set to be equal to or greater than 30S, and in order to ensure the continuity of the safety injection logic test, the upper limit value of the opening time can be set to be less than or equal to 5min.

[0067] S202, controlling the adjustable isolation valve to open at an opening speed within a set opening time range, from a closed state to a fully open state.

[0068] Optionally, after determining the opening speed of the adjustable isolation valve, the adjustable isolation valve can be controlled to open at an opening speed within a set opening time range, from a closed state to a fully open state, to achieve slow injection of reactor coolant through the RCV pump small flow pipeline to the primary pump No. 1 seal leakage flow pipeline of the nuclear power plant.

[0069] In order to accurately adjust the opening speed of the adjustable isolation valve, the operating condition of the equipment connected to the primary pump No. 1 seal leakage flow pipeline can be obtained during the process of controlling the adjustable isolation valve to open at an opening speed within a set opening time range, from a closed state to a fully open state, and the opening speed can be adjusted according to the operating condition.

[0070] Specifically, during the opening of the adjustable isolation valve, the operating condition of the equipment connected to the primary pump No. 1 seal leakage flow pipeline needs to be monitored in real time. If no abnormal operating condition of the equipment connected to the primary pump No. 1 seal leakage flow pipeline is detected, the isolation valve can be continued to be opened at the current opening speed; if an abnormal operating condition of the equipment connected to the primary pump No. 1 seal leakage flow pipeline is detected, the opening speed needs to be reduced within the opening time range to eliminate the abnormal operating condition.

[0071] In this embodiment, the set opening time range and the opening speed are introduced. After determining the set opening time range, the adjustable isolation valve is opened at the corresponding opening speed, which can ensure the safe injection of reactor coolant.

[0072] In order to ensure the safety of the safety injection logic experiment, on the basis of the above embodiments, before the end of the simulation of the failure scenario of the nuclear power plant is detected, in this embodiment, a failure scenario simulation method is provided. The specific implementation is to control the adjustable isolation valve to close, and to simulate the failure scenario of the nuclear power plant under the condition that the adjustable isolation valve is in a closed state.

[0073] Optionally, before the failure simulation is performed, in order to ensure the smooth progress of the failure simulation, the adjustable isolation valve needs to be closed first, which provides a prerequisite for the failure simulation of the nuclear power plant; then, after the adjustable isolation valve is controlled to close, the failure scenario simulation of the nuclear power plant can be realized by adjusting the control panel of the control room according to the operating mode of the nuclear power plant.

[0074] In this embodiment, by closing the adjustable isolation valve before the failure simulation, a prerequisite for the failure simulation of the nuclear power plant is provided, which ensures the safety of the safety injection logic experiment.

[0075] Figure 3For another embodiment of the flowchart of the safety injection logic test optimization method, on the basis of the above embodiment, the present embodiment provides an optional example of the safety injection logic test optimization method. In combination with Figure 6 The specific implementation process is as follows:

[0076] S301, control the adjustable isolation valve to close.

[0077] S302, simulate a fault scenario of the nuclear power plant with the adjustable isolation valve in the closed state.

[0078] S303, after detecting that the simulation of the fault scenario of the nuclear power plant ends, control the small-flow electric valve on the small-flow pipeline of the RCV pump of the nuclear power plant to start.

[0079] Optionally, during the simulation of the fault scenario of the nuclear power plant, real-time fault warning information is acquired. Correspondingly, detecting that the simulation of the fault scenario of the nuclear power plant ends includes: if no fault warning information is acquired within a preset acquisition time length, it is determined that the simulation of the fault scenario of the nuclear power plant ends.

[0080] S304, after the small-flow electric valve starts, the opening speed is determined according to the total opening degree of the adjustable isolation valve and a set opening time length range.

[0081] Optionally, the set opening time length range includes a lower limit value and an upper limit value of the opening time length; the lower limit value of the opening time length is equal to or greater than 30 seconds, and the upper limit value of the opening time length is less than or equal to 5 minutes.

[0082] S305, control the adjustable isolation valve to adjust from the closed state to a fully open state at the opening speed within the set opening time length range, so as to slowly inject the reactor coolant into the No. 1 seal leakage flow pipeline of the main pump of the nuclear power plant through the small-flow pipeline of the RCV pump.

[0083] The adjustable isolation valve is installed on the small-flow pipeline of the RCV pump and is located upstream of the small-flow electric valve.

[0084] Optionally, during the process of controlling the adjustable isolation valve to adjust from the closed state to the fully open state at the opening speed within the set opening time length range, the operating condition of the equipment connected to the No. 1 seal leakage flow pipeline of the main pump is acquired; and the opening speed is adjusted according to the operating condition.

[0085] The specific process of S301-S305 above can be referred to the description of the above method embodiment, and the implementation principle and technical effects are similar, which will not be described here.

[0086] It should be understood that although the steps in the flowcharts involved in the embodiments described above are shown in sequence according to the arrows, the steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, the execution of the steps is not strictly limited in sequence, and the steps can be executed in other orders. Moreover, at least some of the steps in the flowcharts involved in the embodiments described above can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of the steps or stages is not necessarily sequential, but can be alternately executed with at least part of other steps or steps or stages in other steps.

[0087] Based on the same inventive concept, the embodiments of the present application also provide a nuclear power plant safety injection logic test optimization device for implementing the above-mentioned nuclear power plant safety injection logic test optimization method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more nuclear power plant safety injection logic test optimization device embodiments provided below can refer to the limitations of the nuclear power plant safety injection logic test optimization method described above, and will not be repeated here.

[0088] In one embodiment, as shown in Figure 4 , a nuclear power plant safety injection logic test optimization device 1 is provided, comprising: a first starting module 10 and a second starting module 20, wherein:

[0089] The first starting module 10 is configured to, during the safety injection logic test of the nuclear power plant, if it is detected that the simulation of the failure scenario of the nuclear power plant is ended, control the small-flow electric valve on the RCV pump small-flow pipeline of the nuclear power plant to start;

[0090] The second starting module 20 is configured to, after the small-flow electric valve starts, control the adjustable isolation valve to adjust from the closed state to the fully open state within a set opening time range, so as to slowly inject the reactor coolant into the main pump No. 1 seal leakage flow pipeline of the nuclear power plant through the RCV pump small-flow pipeline;

[0091] The adjustable isolation valve is installed on the RCV pump small-flow pipeline and is located upstream of the small-flow electric valve.

[0092] In one embodiment, as shown in Figure 5 , the second starting module 20 comprises:

[0093] The speed determination unit 21 is configured to determine the opening speed according to the total opening degree of the adjustable isolation valve and the set opening time range;

[0094] The valve opening unit 22 is configured to control the adjustable isolation valve to open at an opening speed within a set opening time range from a closed state to a fully open state.

[0095] The adjusting unit 23 is configured to acquire an operation condition of an equipment connected to the primary pump No. 1 seal leakage flow pipeline during the process of controlling the adjustable isolation valve to open at an opening speed within a set opening time range from a closed state to a fully open state, and adjust the opening speed according to the operation condition.

[0096] In an embodiment, the set opening time range includes an opening time lower limit value and an opening time upper limit value; the opening time lower limit value is equal to or greater than 30 seconds, and the opening time upper limit value is less than or equal to 5 minutes.

[0097] In an embodiment, the safety injection logic test optimization device 1 for a nuclear power plant further includes a fault simulation module, where the fault simulation module is specifically configured to:

[0098] control the adjustable isolation valve to close; and simulate a fault scene for the nuclear power plant when the adjustable isolation valve is in a closed state.

[0099] In an embodiment, the safety injection logic test optimization device 1 for a nuclear power plant further includes a pre-warning module, where the pre-warning module is specifically configured to:

[0100] acquire fault warning information in real time during the simulation of the fault scene for the nuclear power plant;

[0101] Correspondingly, the pre-warning module is further configured to:

[0102] If the fault warning information is not acquired within a preset acquisition time, it is determined that the simulation of the fault scene for the nuclear power plant is ended.

[0103] The above-mentioned modules in the safety injection logic test optimization device for a nuclear power plant can be all or partially realized by software, hardware, and a combination thereof. The above-mentioned modules can be embedded in or independent of a processor in a computer device in a hardware form, or can be stored in a memory in a computer device in a software form, so as to be called and executed by a processor to perform the operations corresponding to the above-mentioned modules.

[0104] In an embodiment, a computer device is provided, which can be a control device in a nuclear power plant control system, for example, a server, and an internal structure diagram of the computer device can be as shown in Figure 6As shown in the figure. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through the system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capability. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with the terminal outside through the network connection. The computer program is executed by the processor to realize a kind of nuclear power plant safety injection logic test optimization method.

[0105] Those skilled in the art can understand that, Figure 6 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0106] In one embodiment, a computer device is provided, comprising a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the following steps:

[0107] In the process of safety injection logic experiment of nuclear power plant, if it is detected that the fault scene simulation of nuclear power plant ends, the small flow electric valve on the RCV pump small flow pipeline of nuclear power plant is controlled to start;

[0108] After the small flow electric valve starts, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within a set opening time range, so as to slowly inject reactor coolant into the main pump No. 1 sealing leakage flow pipeline of nuclear power plant through the RCV pump small flow pipeline.

[0109] Among them, the adjustable isolation valve is installed on the RCV pump small flow pipeline and located upstream of the small flow electric valve.

[0110] In one embodiment, when the processor executes the logic in the computer program to control the adjustable isolation valve to adjust from the closed state to the fully open state within the set opening time range, the following steps are specifically implemented:

[0111] According to the total opening degree of the adjustable isolation valve and the set opening time range, the opening speed is determined; and the adjustable isolation valve is controlled to adjust from the closed state to the fully open state at the opening speed in the set opening time range.

[0112] In one embodiment, when the processor executes the logic in the computer program, the following steps are specifically implemented:

[0113] In the process of controlling the adjustable isolation valve to adjust from the closed state to the fully open state at the opening speed in the set opening time range, the operating condition of the equipment connected by the No. 1 sealing leakage flow pipeline of the main pump is obtained; and the opening speed is adjusted according to the operating condition.

[0114] In one embodiment, the set opening time range in the computer program that the processor needs to execute includes the lower limit value of the opening time and the upper limit value of the opening time; wherein the lower limit value of the opening time is equal to or greater than 30S, and the upper limit value of the opening time is less than or equal to 5min.

[0115] In one embodiment, if it is detected that the fault scenario simulation of the nuclear power plant ends, then before the small flow electric valve on the small flow pipeline of the RCV pump of the nuclear power plant is started, the processor executes the logic in the computer program, and the following steps are specifically implemented:

[0116] The adjustable isolation valve is controlled to be closed; and the nuclear power plant is simulated in the fault scenario under the condition that the adjustable isolation valve is in the closed state.

[0117] In one embodiment, when the processor executes the logic in the computer program, the following steps are specifically implemented:

[0118] In the process of simulating the nuclear power plant in the fault scenario, the fault warning information is obtained in real time.

[0119] Correspondingly, when the processor executes the logic in the computer program that detects that the fault scenario simulation of the nuclear power plant ends, the following steps are specifically implemented:

[0120] If the fault warning information is not obtained within the preset acquisition time, it is determined that the fault scenario simulation of the nuclear power plant ends.

[0121] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the following steps:

[0122] In the process of performing the safety injection logic experiment on the nuclear power plant, if it is detected that the fault scenario simulation of the nuclear power plant ends, the small flow electric valve on the small flow pipeline of the RCV pump of the nuclear power plant is controlled to start;

[0123] After the small flow electric valve is started, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within a set opening duration range, so as to slowly inject the reactor coolant into the primary seal leakage flow pipeline of the main pump of the nuclear power plant through the small flow pipeline of the RCV pump;

[0124] The adjustable isolation valve is installed on the small flow pipeline of the RCV pump and is located upstream of the small flow electric valve.

[0125] In one embodiment, the code logic in the computer program for controlling the adjustable isolation valve to adjust from the closed state to the fully open state within the set opening duration range is executed by the processor to specifically implement the following steps:

[0126] According to the total opening degree of the adjustable isolation valve and the set opening duration range, the opening speed is determined; and the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within the set opening duration range at the opening speed.

[0127] In one embodiment, the code logic in the computer program is executed by the processor to specifically implement the following steps:

[0128] In the process of controlling the adjustable isolation valve to adjust from the closed state to the fully open state within the set opening duration range at the opening speed, the operating condition of the equipment connected to the primary seal leakage flow pipeline is acquired; and the opening speed is adjusted according to the operating condition.

[0129] In one embodiment, the set opening duration range in the computer program includes a lower limit value of the opening duration and an upper limit value of the opening duration; and the code logic that the lower limit value of the opening duration is equal to or greater than 30S and the upper limit value of the opening duration is less than or equal to 5 min needs to be executed by the processor.

[0130] In one embodiment, if it is detected that the fault scenario simulation of the nuclear power plant is ended, the code logic in the computer program is executed by the processor before the small flow electric valve on the small flow pipeline of the RCV pump of the nuclear power plant is started to specifically implement the following steps:

[0131] The adjustable isolation valve is controlled to be closed; and the fault scenario simulation is performed on the nuclear power plant under the condition that the adjustable isolation valve is in the closed state.

[0132] In one embodiment, the code logic in the computer program is executed by the processor to specifically implement the following steps:

[0133] During the fault scenario simulation of the nuclear power plant, the fault warning information is acquired in real time;

[0134] Correspondingly, the code logic in the computer program for detecting that the fault scenario simulation of the nuclear power plant is ended is executed by the processor to specifically implement the following steps:

[0135] If the fault warning information is not acquired within the preset acquisition time length, it is determined that the simulation of the fault scenario of the nuclear power plant ends.

[0136] In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the following steps:

[0137] In the process of performing the safety injection logic experiment on the nuclear power plant, if it is detected that the simulation of the fault scenario of the nuclear power plant ends, the small-flow electric valve on the small-flow pipeline of the RCV pump of the nuclear power plant is controlled to start;

[0138] After the small-flow electric valve starts, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within a set opening time range, so as to slowly inject the reactor coolant into the No. 1 seal leakage flow pipeline of the main pump of the nuclear power plant through the small-flow pipeline of the RCV pump;

[0139] The adjustable isolation valve is installed on the small-flow pipeline of the RCV pump and is located upstream of the small-flow electric valve.

[0140] In one embodiment, when the computer program is executed by the processor to control the adjustable isolation valve to adjust from the closed state to the fully open state within the set opening time range, the following steps are specifically implemented:

[0141] According to the total opening degree of the adjustable isolation valve and the set opening time range, the opening speed is determined; and the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within the set opening time range at the opening speed.

[0142] In one embodiment, when the computer program is executed by the processor, the following steps are specifically implemented:

[0143] In the process of controlling the adjustable isolation valve to adjust from the closed state to the fully open state within the set opening time range at the opening speed, the operating conditions of the equipment connected to the No. 1 seal leakage flow pipeline of the main pump are acquired; and the opening speed is adjusted according to the operating conditions.

[0144] In one embodiment, the computer program needs to be executed by the processor to set the opening time range including a lower limit value of the opening time and an upper limit value of the opening time; wherein the lower limit value of the opening time is equal to or greater than 30S, and the upper limit value of the opening time is less than or equal to 5min.

[0145] In one embodiment, before the small-flow electric valve on the small-flow pipeline of the RCV pump of the nuclear power plant is controlled to start if it is detected that the simulation of the fault scenario of the nuclear power plant ends, when the computer program is executed by the processor, the following steps are specifically implemented:

[0146] The adjustable isolation valve is closed, and the nuclear power plant is simulated in a fault scenario under the condition that the adjustable isolation valve is closed.

[0147] In one embodiment, the computer program, when executed by the processor, implements the following steps:

[0148] During the simulation of the fault scenario of the nuclear power plant, the fault warning information is acquired in real time;

[0149] Correspondingly, when the computer program is executed by the processor to detect that the simulation of the fault scenario of the nuclear power plant is ended, the following steps are implemented:

[0150] If the fault warning information is not acquired within the preset acquisition time length, it is determined that the simulation of the fault scenario of the nuclear power plant is ended.

[0151] It should be noted that the data (including but not limited to equipment operation data) involved in the present application are all data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data need to comply with the relevant laws, regulations and standards of the country and region.

[0152] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0153] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0154] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A method for optimizing safety injection logic tests in nuclear power plants, characterized in that, The method includes: During the safety injection logic experiment of the nuclear power plant, if the simulation of the fault scenario of the nuclear power plant is detected to have ended, the small flow electric valve on the small flow pipeline of the RCV pump of the nuclear power plant is activated. After the low-flow electric valve is activated, the adjustable isolation valve is controlled to adjust from the closed state to the fully open state within a set opening time range, so as to slowly inject reactor coolant into the main pump No. 1 seal leakage flow line of the nuclear power plant through the low-flow RCV pump line. The adjustable isolation valve is installed on the low-flow pipeline of the RCV pump and is located upstream of the low-flow electric valve.

2. The method according to claim 1, characterized in that, The controllable isolation valve is adjusted from a closed state to a fully open state within a set opening time range, including: The opening speed is determined based on the total opening degree of the adjustable isolation valve and the set opening duration range; The adjustable isolation valve is controlled to adjust from the closed state to the fully open state at the opening speed within the set opening time range.

3. The method according to claim 2, characterized in that, The method further includes: During the process of adjusting the adjustable isolation valve from the closed state to the fully open state at the opening speed within the set opening time range, the operating conditions of the equipment connected to the main pump No. 1 seal leakage flow pipeline are obtained. The opening speed is adjusted according to the operating conditions.

4. The method according to claim 2, characterized in that, The set activation duration range includes a lower limit and an upper limit; wherein the lower limit is equal to or greater than 30 seconds, and the upper limit is less than or equal to 5 minutes.

5. The method according to claim 1, characterized in that, The method further includes: before activating the low-flow electric valve on the low-flow pipeline of the nuclear power plant's RCV pump if the simulation of the nuclear power plant's fault scenario is detected to have ended, Control the adjustable isolation valve to close; With the adjustable isolation valve in the closed state, a fault scenario simulation was performed on the nuclear power plant.

6. The method according to claim 1, characterized in that, The method further includes: During the fault scenario simulation at the nuclear power plant, fault warning information is acquired in real time. Accordingly, the simulation of the fault scenario detected at the nuclear power plant ends, including: If no fault warning information is obtained within the preset acquisition time, it is determined that the simulation of the fault scenario of the nuclear power plant has ended.

7. A safety injection logic test optimization device for nuclear power plants, characterized in that, The device includes: The first startup module is used to start the small-flow electric valve on the small-flow pipeline of the nuclear power plant's RCV pump if the simulation of the nuclear power plant's fault scenario is detected to have ended during the safety injection logic experiment of the nuclear power plant. The second start-up module is used to control the adjustable isolation valve to adjust from the closed state to the fully open state within a set opening time range after the small flow electric valve is started, so as to slowly inject reactor coolant into the main pump No. 1 seal leakage flow line of the nuclear power plant through the small flow pipeline of the RCV pump. The adjustable isolation valve is installed on the low-flow pipeline of the RCV pump and is located upstream of the low-flow electric valve.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

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

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

Images