Water logging simulation method based on hole configuration and related equipment

Abstract

The invention discloses a water logging simulation method based on hole configuration and related equipment, and belongs to the technical field of water logging simulation. The method comprises the following steps: constructing an internal physical model of a nuclear power plant; determining water logging parameters of the hole configuration water logging working condition, and debugging the nuclear power plant internal physical model according to the water logging parameters of the hole configuration water logging working condition; simulating and executing a water logging simulation test of the hole configuration water logging working condition, and recording hydraulic parameters in the water logging simulation process until the water logging simulation test of the hole configuration water logging working condition is completed. By constructing the nuclear power plant internal physical model and testing the flooding simulation process under the flooding working condition of the hole configuration through the nuclear power plant internal physical model, the spreading path, the accumulation process and the distribution state of the water flow in the complex environment of the nuclear power plant can be visually observed, the flooding simulation precision is effectively improved, and the simulation accuracy is improved. And data support is provided for safety design and emergency strategy formulation in the nuclear power plant.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water flooding simulation, in particular to a water flooding simulation method based on hole configuration and related equipment. BACKGROUND

[0002] Currently, the water flooding in the nuclear power plant is a common cause failure of system and equipment, that is, the phenomenon of simultaneous failure of multiple components or systems caused by the same reason. Therefore, in the design and disaster prevention of the nuclear power plant, such potential risks must be fully considered.

[0003] In the related art, the hole propagation simulation method usually uses empirical formula, simplified analytical method and computational fluid dynamics (CFD) simulation method. However, it is found in actual application that the analysis results of the empirical formula and the simplified analytical method are usually too conservative or deviate greatly from the actual situation, and the limitation of the CFD simulation leads to insufficient hole hydraulic characteristics, affecting the simulation accuracy.

[0004] To sum up, the technical problems existing in the related art need to be improved. SUMMARY

[0005] The embodiments of the present application provide a water flooding simulation method based on hole configuration and related equipment, which can effectively improve the water flooding simulation accuracy and provide data support for the safety design and emergency strategy formulation of the internal nuclear power plant.

[0006] In one aspect, the embodiments of the present application provide a water flooding simulation method based on hole configuration, which comprises the following steps: constructing a physical model of the internal nuclear power plant; determining water flooding parameters of the hole configuration water flooding condition, and debugging the physical model of the internal nuclear power plant according to the water flooding parameters of the hole configuration water flooding condition; simulating water flooding simulation test of the hole configuration water flooding condition, recording hydraulic parameters in the water flooding simulation process until the water flooding simulation test of the hole configuration water flooding condition is completed.

[0007] Optionally, the step of determining water flooding parameters of the hole configuration water flooding condition and debugging the physical model of the internal nuclear power plant according to the water flooding parameters of the hole configuration water flooding condition comprises: determining the water flooding starting point, the water flooding outflow type and the water flooding duration of the hole configuration water flooding condition; debugging the physical model of the internal nuclear power plant based on the water flooding starting point and the water flooding outflow type; The water flooding outflow type comprises ground hole outflow and side wall hole outflow.

[0008] Optionally, the simulation includes performing a flooding simulation test of the hole configuration under flooding conditions, recording hydraulic parameters during the flooding simulation process, until the flooding simulation test of the hole configuration under flooding conditions is completed, including: A flood simulation test was conducted based on a preset flood duration to simulate the flooding conditions of the hole configuration, and flood simulation measuring instruments were deployed; wherein, the flood simulation measuring instruments include a camera, a water level gauge and a particle image velocimeter. By combining a camera, a water level gauge, and a particle image velocimeter, the hydraulic parameters during the flooding simulation process are measured and recorded until the flooding simulation test of the hole configuration is completed.

[0009] Optionally, the method further includes: By combining the video data captured by the camera, the water level data measured by the water level gauge and the particle image velocimeter, and the flow velocity data, the spread path of the flooded condition of the hole configuration is analyzed.

[0010] Optionally, after completing the flood simulation test of the hole configuration under flood conditions, the method further includes: Return to the process of adjusting the internal physical model of the nuclear power plant building according to the flooding parameters of the hole configuration flooding condition, and re-simulate the flooding simulation test of the hole configuration flooding condition, recording the hydraulic parameters during the flooding simulation process, until the number of flooding simulation tests of the hole configuration flooding condition reaches the preset threshold. The average value of each hydraulic parameter in all flooding simulation processes was calculated and used as the final flooding simulation test result.

[0011] Optionally, the construction of the internal physical model of the nuclear power plant includes: Based on the internal structure of a nuclear power plant, a physical model of the internal structure of the nuclear power plant is constructed, and a circulating water storage tank, a water supply centrifugal pump, and a discharge pipeline are provided. The internal physical model of the nuclear power plant is designed as a two-layer structure, constructed using plexiglass, steel, and pulleys.

[0012] On the other hand, embodiments of this application provide a flooding simulation device based on a perforated configuration, the device comprising: The model building module is used to build physical models of the interior of nuclear power plants; The model debugging module is used to determine the flooding parameters of the hole configuration flooding condition, and to debug the internal physical model of the nuclear power plant building according to the flooding parameters of the hole configuration flooding condition. The flooding simulation module is used to simulate and execute the flooding simulation test of the hole configuration, record the hydraulic parameters during the flooding simulation process, and complete the flooding simulation test of the hole configuration.

[0013] On the other hand, embodiments of this application provide an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0014] On the other hand, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0015] On the other hand, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0016] This application embodiment constructs an internal physical model of a nuclear power plant and simulates the flooding process under flooding conditions by testing the hole configuration of the internal physical model of the nuclear power plant. This allows for a direct observation of the diffusion path, accumulation process, and distribution of water flow in the complex environment of the nuclear power plant, effectively improving the accuracy of flooding simulation and providing data support for the safety design and emergency strategy formulation of the nuclear power plant interior. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the implementation environment of a flooding simulation method based on a hole configuration provided in an embodiment of this application; Figure 2 This is a schematic flowchart of a flooding simulation method based on a hole configuration provided in an embodiment of this application; Figure 3 This is a plan view of the internal physical model of a nuclear power plant provided in an embodiment of this application; Figure 4 This is a cross-sectional view of the internal physical model of a nuclear power plant provided in an embodiment of this application; Figure 5 This is one of the schematic diagrams of the internal physical model of a nuclear power plant provided in the embodiments of this application; Figure 6 This is a second schematic diagram of the internal physical model of a nuclear power plant provided in the embodiments of this application; Figure 7 This is one of the schematic diagrams of water level change curves in a flooding simulation test provided in the embodiments of this application; Figure 8 This is a second schematic diagram of a water level change curve in a flooding simulation test provided in an embodiment of this application; Figure 9 This is a schematic diagram of the spread path of a flooding simulation test provided in an embodiment of this application; Figure 10 This is a schematic diagram of a flooding simulation device based on a hole configuration provided in an embodiment of this application; Figure 11 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0019] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various concepts, but unless otherwise stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words “if,” “when,” or “in response to a determination” as used herein may be interpreted as “when…” or “when…” or “in response to a determination.”

[0020] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0022] Currently, flooding inside nuclear power plant buildings is considered a common-cause failure of systems and equipment, meaning that multiple components or systems fail simultaneously due to the same cause. Therefore, this potential risk must be fully considered in the design and disaster prevention of nuclear power plants.

[0023] In related technologies, methods for simulating the spread of pores typically utilize empirical formulas and simplified analytical methods, as well as computational fluid dynamics (CFD) simulations. However, in practical applications, it has been found that the analytical results from empirical formulas and simplified analytical methods are often too conservative or deviate significantly from actual conditions. The limitations of CFD simulations result in insufficient understanding of the hydraulic characteristics of pores, affecting the simulation accuracy.

[0024] In view of this, this application provides a flooding simulation method and related equipment based on a perforated configuration. By constructing a physical model of the interior of a nuclear power plant and conducting a flooding simulation process under flooding conditions using the physical model of the interior of the nuclear power plant, the spread path, accumulation process and distribution state of water flow in the complex environment of the nuclear power plant can be observed intuitively, effectively improving the accuracy of flooding simulation and providing data support for the safety design and emergency strategy formulation of the interior of the nuclear power plant.

[0025] It should be noted that in all specific embodiments of this application, when processing data related to user identity or characteristics, such as user information, user behavior data, user historical data, and user location information, user permission or consent is obtained first. Furthermore, the collection, use, and processing of this data comply with relevant laws, regulations, and standards. In addition, when embodiments of this application require access to sensitive personal information of users, separate permission or consent from the user is obtained through pop-ups or redirection to confirmation pages. Only after obtaining the user's separate permission or consent is the necessary user-related data required for the proper functioning of these embodiments acquired.

[0026] The specific implementation methods of the embodiments of this application will be described in detail below with reference to the accompanying drawings. First, a flooding simulation method based on a hole configuration provided in the embodiments of this application will be described with reference to the accompanying drawings.

[0027] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the implementation environment for a flooding simulation method based on a hole configuration provided in this application embodiment. In this implementation environment, the main hardware and software components involved include a terminal processor 110 and a server 120.

[0028] Specifically, the terminal processor 110 may be equipped with a control program for a flood simulation method based on a perforated configuration, and the server 120 serves as the backend server for this control program. The terminal processor 110 and the backend server 120 are connected via a communication link. The flood simulation method based on a perforated configuration provided in this embodiment can be executed on the terminal processor 110 side.

[0029] Server 120 can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN (Content Delivery Network), and big data and artificial intelligence platforms.

[0030] In addition, server 120 can also be a node server in a blockchain network.

[0031] The terminal processor 110 and the server 120 can establish a communication connection via a wireless network. This wireless network uses standard communication technologies and / or protocols. The network can be the Internet or any other network, including but not limited to a Local Area Network (LAN), Metropolitan Area Network (MAN), Wide Area Network (WAN), mobile, or any combination of wireless networks, private networks, or virtual private networks. Furthermore, these hardware and software components can use the same or different communication connection methods; this application does not impose specific limitations in this regard.

[0032] Of course, this is understandable. Figure 1 The implementation environment described in this application is only one of the optional application scenarios for the flooding simulation method based on hole configuration provided in this embodiment. The actual application is not fixed. Figure 1 The software and hardware environment shown is not specifically limited in this application.

[0033] like Figure 2 As shown, Figure 2 This is a flowchart illustrating a flooding simulation method based on a hole configuration provided in this application embodiment, specifically including but not limited to steps 100 to 300.

[0034] Step 100: Construct a physical model of the interior of the nuclear power plant.

[0035] In this embodiment of the application, a repeatable and observable physical model of the interior of a nuclear power plant can be constructed according to predetermined functional requirements in order to reproduce various typical flooding conditions inside the nuclear power plant.

[0036] For example, the construction of the internal physical model of a nuclear power plant includes: Based on the internal structure of a nuclear power plant, a physical model of the internal structure of the nuclear power plant is constructed, and a circulating water storage tank, a water supply centrifugal pump, and a discharge pipeline are provided. The internal physical model of the nuclear power plant is designed as a two-layer structure, constructed using plexiglass, steel, and pulleys.

[0037] In practical applications, a physical model of the internal structure of a nuclear power plant can be constructed based on its internal structure, and this model can be set as a two-layer structure.

[0038] For example, please refer to Figure 3 , Figure 3This is a plan view of a physical model of the interior of a nuclear power plant, provided in an embodiment of this application. The physical model includes a circulating water tank, a centrifugal pump for water supply, and a discharge pipe. The circulating water tank stores water resources for testing flooding conditions. The centrifugal pump pumps water from the circulating water tank into the inlet pipe, which then delivers the water into the physical model of the nuclear power plant, simulating flooding conditions inside the plant. The outlet of the centrifugal pump is connected to an electromagnetic flow meter via a pipe to control the flow rate during flooding conditions inside the nuclear power plant.

[0039] Further, please refer to Figure 4 , Figure 4 This is a cross-sectional view of an internal physical model of a nuclear power plant provided in an embodiment of this application. The internal physical model of the nuclear power plant is mainly set as a two-layer structure, such as... Figure 3 and Figure 4 As shown, the physical model of the nuclear power plant's interior has three rooms on each floor. Rooms 1, 2, and 3 are located on the second floor, with varying areas and flow patterns to enhance flow regime diversity and better simulate the unsteady flow caused by structural damage within the plant. Furthermore, rooms 4, 5, and 6 are located on the first floor, corresponding to the positions of rooms 1, 2, and 3 on the second floor. For example... Figure 3 As shown, the position of room 4 coincides with the position of room 1 in the vertical direction, the position of room 5 coincides with the position of room 2 in the vertical direction, and the position of room 6 coincides with the position of room 3 in the vertical direction.

[0040] In practical applications, the bottom of the physical model inside the nuclear power plant building is also equipped with support brackets and drainage pipes. The support brackets are used to fix and support the physical model, while the drainage pipes are used to drain the water inside the physical model and return it to the circulating water tank to prevent residual water from affecting the accuracy of the flow rate. In addition, the water level in the circulating water tank can be set to be flush with the first floor slab of the physical model inside the nuclear power plant building, and the drainage pipes can be kept full to avoid the empty pipe effect.

[0041] Furthermore, the physical model of the nuclear power plant interior is constructed using plexiglass, steel, and pulleys, and is equipped with stepped staircases to connect the first and second floors of the double-layer structure. The stairwell entrances are equipped with horizontal door gaps so that when a flooding accident occurs on the second floor, water can flow from the second floor to the first floor through the door gaps.

[0042] In practical applications, the use of plexiglass facilitates the observation of water flow direction and diffusion path during flooding tests. By welding an iron frame onto the second-layer base plate with steel and connecting it with multiple lifting pulleys, a detachable physical model of the nuclear power plant's interior can be formed, improving the flexibility of flooding simulation.

[0043] For example, when only the first floor is needed for flood simulation, the second floor can be raised using lifting pulleys. Alternatively, when more layers of structure need to be added to the physical model inside the nuclear power plant, the second floor can be raised using lifting pulleys, thereby inserting additional internal structures between the first and second floors and forming a multi-layered physical model of the nuclear power plant's interior.

[0044] Therefore, it is understandable that Figure 3 and Figure 4 The physical model structure of the nuclear power plant interior shown is only one of the optional structural designs in the physical model of the nuclear power plant interior provided in this embodiment of the application. The actual structure is not fixed. Figure 3 and Figure 4 The physical model of the internal structure of the nuclear power plant shown is not specifically limited in this application.

[0045] Step 200: Determine the flooding parameters for the hole configuration flooding condition, and adjust the internal physical model of the nuclear power plant building according to the flooding parameters for the hole configuration flooding condition.

[0046] In this embodiment of the application, before simulating the flooding condition of the hole configuration using the internal physical model of the nuclear power plant, it is necessary to determine the flooding parameters of the hole configuration flooding condition in advance, and to debug the internal physical model of the nuclear power plant using the flooding parameters of the hole configuration flooding condition, thereby completing the preparation work for the flooding simulation test of the internal physical model of the nuclear power plant.

[0047] Among them, the hole configuration flooding condition simulates the rupture of pipes inside a nuclear power plant to reproduce the flooding condition in which leaking water flows out through different types of holes in different locations.

[0048] In practical applications, the water inside the physical model of the nuclear power plant is first drained through the effluent pipe. Then, according to the flooding point in the flooding condition, the valve of the corresponding inlet pipe is opened. The flow rate at the breach is controlled by an electromagnetic flow meter and a centrifugal pump to match the flooding flow rate in the flooding condition. After setting up high-precision instruments to measure the flow velocity, flow rate at the door gaps / holes and the water level changes in each room, the commissioning preparation process of the physical model inside the nuclear power plant is completed.

[0049] Specifically, as an optional implementation, determining the flooding parameters for the perforated configuration flooding condition and adjusting the internal physical model of the nuclear power plant building based on the flooding parameters for the perforated configuration flooding condition includes: Determine the flooding point, flood outflow type, and flood duration for the flooding conditions of the cavity configuration; Based on the flooding initiation point and the flood outflow type, the internal physical model of the nuclear power plant building was adjusted. The flood outflow types include ground hole outflow and sidewall hole outflow.

[0050] In this embodiment of the application, when reading and determining the flooding parameters of the hole configuration flooding condition, the main determinations are the flooding initiation point, flooding outflow type, and flooding duration of the hole configuration flooding condition. The flooding initiation point is the starting location of the flooding accident in the flooding condition simulation test. The flooding outflow type is the flooding spread mode in the flooding condition. For example, the flooding outflow type in the hole configuration flooding condition can be determined as ground hole outflow and sidewall hole outflow according to different hole settings. The flooding duration is the length of time for the flooding simulation test under the hole configuration flooding condition.

[0051] For example, please refer to Figure 5 , Figure 5 This is one of the schematic diagrams of the internal physical model of a nuclear power plant provided in the embodiments of this application. Figure 5 The diagram shows the structural design of each room in the second floor of the physical model of the nuclear power plant building. Different types of outflow methods are marked with red lines. Rooms 1 and 2 in the second floor are equipped with inlet pipes, which can be used as flooding initiation points. The flood flow rate during the flood simulation test can be controlled by adjusting the size of the inlet pipe openings. Room 1 has a horizontal door gap outflow method, while Room 2 has ground holes and horizontal door gap outflow methods. The ground holes can be used to simulate the spread path of water leaking from the holes to lower floors during a flood accident. Furthermore, the horizontal door gap allows the water in Room 2 to flood into Room 3, and then spread to the second-floor stairwell through the horizontal door gap between Room 3 and the stairwell. This can realistically simulate the flood spread process between different rooms and different floors during a flood.

[0052] Further, please refer to Figure 6 , Figure 6 This is the second schematic diagram of an internal physical model of a nuclear power plant provided in an embodiment of this application. Figure 6The diagram shows the structural design of each room in the first floor of the physical model of the nuclear power plant building. Different types of outflow methods are marked with red lines. Room 4 in the first floor is equipped with an inlet pipe, which can be used as the flood initiation point. Room 4 has a horizontal door gap outflow method. In addition, different types of flood initiation can be achieved by adjusting the size of the pipe opening. Room 5 has a side wall hole outflow method, which can be used to simulate the spread path of water seeping and leaking from the wall holes during a flood accident. Furthermore, the horizontal door gap between room 6 and the stairwell can realistically simulate the flood spread process between different rooms and different floors during a flood.

[0053] In practical applications, the dimensional parameters for different flood outflow types can also be determined. For example, the radius of the ground hole can be preset to 0.05m, the radius of the side wall hole to 0.06m, and the height from the ground to 0.15m. Furthermore, the horizontal door gap can be simultaneously set to be located directly below the doorway of each room, with a height of 0.01m and a length of 0.28m.

[0054] Therefore, by determining the flood initiation point and the flood outflow model, the internal physical model of the nuclear power plant can be debugged, thus completing the preparation work before conducting the flood simulation test. This can be achieved by opening or closing valves on different inlet pipes, using openings in the pipes as inlets, and then detecting the inlet flow rate using an electromagnetic flowmeter.

[0055] For example, the flooding starting point of the perforated configuration flooding condition can be set as room 2 on the second floor of the internal physical model of the nuclear power plant. The flood outflow types include ground hole outflow and side wall hole outflow (leaking through the ground hole in room 2 to room 5 on the first floor, and then outflowing through the side wall hole in room 5). Thus, room 2 can be set as the flooding starting room, and the flow rate at the rupture of the inlet pipe can be adjusted to a pre-set 1.8 m³ / h by using an electromagnetic flow meter and a water supply centrifugal pump, and the flooding duration can be determined to be 30 minutes, thereby completing the commissioning of the internal physical model of the nuclear power plant.

[0056] Step 300: Simulate the flooding simulation test of the hole configuration under flooding conditions, record the hydraulic parameters during the flooding simulation process, until the flooding simulation test of the hole configuration under flooding conditions is completed.

[0057] In this embodiment of the application, the internal physical model of the nuclear power plant is debugged by determining the flooding parameters of the hole configuration flooding condition. After setting up high-precision instruments to measure the flow velocity, flow rate and water level changes in each room at the door gaps / holes, the flooding simulation test of the hole configuration flooding condition can be started, and the hydraulic parameters during the flooding simulation process are recorded until the flooding simulation test of the hole configuration flooding condition is completed.

[0058] Therefore, compared to traditional nuclear power plant flood analysis, which often employs conservative deterministic methods or computational fluid dynamics (CFD) simulations (where deterministic analysis is often overly conservative and may exaggerate flood consequences, leading to increased design costs), and CFD simulation suffers from complex modeling and high computational resource consumption), this application constructs an internal physical model of the nuclear power plant and simulates the flooding process under flood conditions in a perforated configuration using this model. This allows for direct observation of the diffusion path, accumulation process, and distribution of water flow within the complex environment of the nuclear power plant, effectively improving the accuracy of flood simulation. This provides data support for the safety design and emergency response strategy development within the nuclear power plant and reduces computational resource consumption.

[0059] Optionally, as a specific implementation, the simulated flooding test of the hole configuration under flooding conditions, recording the hydraulic parameters during the flooding simulation process, until the flooding simulation test of the hole configuration under flooding conditions is completed, includes: A flood simulation test was conducted based on a preset flood duration to simulate the flooding conditions of the hole configuration, and flood simulation measuring instruments were deployed; wherein, the flood simulation measuring instruments include a camera, a water level gauge and a particle image velocimeter. By combining a camera, a water level gauge, and a particle image velocimeter, the hydraulic parameters during the flooding simulation process are measured and recorded until the flooding simulation test of the hole configuration is completed.

[0060] In this embodiment of the application, a flood simulation test of the hole configuration flood condition is simulated based on a preset flood duration. Video is captured by a camera, and the water level changes in each room during the flood simulation are monitored by a water level gauge. At the same time, the hydraulic parameters of each door gap and hole during the flood simulation can be measured by a particle image velocimeter until the flood simulation test of the hole configuration flood condition is completed.

[0061] In practical applications, water level measuring points can be installed in each room of the physical model inside a nuclear power plant building. For example, pressure water level gauges can be installed in rooms on the first floor, and ultrasonic water level gauges can be installed in rooms on the second floor, thereby monitoring the water level change process. Furthermore, by measuring the flow velocity data of each door gap and hole during the flooding simulation process using particle image velocimetry instruments, the cross-sectional area of ​​each door gap and hole can be calculated in combination with the size of each door gap and hole, thereby calculating the flow rate data of each door gap and hole.

[0062] For example, please refer to Figure 7 and Figure 8 , Figure 7 This is one of the schematic diagrams of water level change curves in a flooding simulation test provided in the embodiments of this application. Figure 8This is the second schematic diagram of a water level change curve in a flooding simulation test provided in this application embodiment. Specifically, Figure 7 The water level change curve in the figure corresponds to the water level change process in room 4 of the first floor of the nuclear power plant's internal physical model under a flooding simulation test with a perforated configuration and a flooding duration of 30 minutes. Figure 8 The water level change curve in the figure corresponds to the water level change process of room 5 on the first floor of the physical model inside the nuclear power plant under the flooding simulation test of the hole configuration flooding condition with a flooding duration of 30 minutes.

[0063] In practical applications, the water level variation trends in Room 6 on the first floor, the first-floor corridor, and the first-floor stairwell in the internal physical model of a nuclear power plant building are similar to... Figure 7 The water level trends in room 4 are roughly the same, generally showing an initial stable state followed by a steady linear rise. Rooms 1 and 3 on the second floor, the second-floor corridor, and the second-floor stairwell experience smaller water level fluctuations. However, room 2 on the second floor experiences larger fluctuations due to the direct impact, diffusion, and splashing of the leaking water. Furthermore, the water level in room 5 generally shows a rise → stabilization → further rise trend. This is mainly due to the initial impact of water leakage from the floor openings in room 2, the middle stage of outflow through side wall openings, and the subsequent rise after the side wall openings are completely submerged.

[0064] In practical applications, the method further includes: By combining the video data captured by the camera, the water level data measured by the water level gauge and the particle image velocimeter, and the flow velocity data, the spread path of the flooded condition of the hole configuration is analyzed.

[0065] In this embodiment of the application, by combining video data captured by a camera, water level data measured by a water level gauge and a particle image velocimeter, and flow velocity data, the time points at which water level changes occur in each room after the flooding begins at the flooding point can be determined, thereby confirming the spread path of the flooding condition of the hole configuration. This can be used for verification in digital simulation experiments and can also provide data support for safety design and emergency strategy formulation.

[0066] For example, Table 1 is a table of nodes for the flooding path of the perforated configuration. Table 1 shows the key time nodes in the flooding process of the perforated configuration in the embodiment of this application. That is, after the pipe at the top of the second-floor room 2 leaks, the flooding begins. The water flow continuously impacts the floor of the room, quickly spreads in the room and covers the ground to form water accumulation. The water flow in room 2 is mainly discharged downwards in a waterfall shape through the holes in the ground. A small amount of water flows out through the horizontal door gap. The water flowing out from the horizontal door gap passes through the second-floor room 3 and flows into the stairwell. It then flows down to the first-floor room 6 through two steps of stairs. This part of the water flow merges with the water flow from the first-floor room 5 (flowing out through the holes in its side wall) in the room 6, which together cause the water level in the room 6 to rise.

[0067] Furthermore, the continuous influx of water from the ground-level openings in the second-floor room 2 caused the water level in the first-floor room 5 to gradually rise, forming a water cushion of a certain thickness within the room. When the water level in room 5 rose above the bottom of the side wall opening (i.e., the top of the weir), the water began to flow down into room 6 through the opening in a weir-like manner. Due to the large water level difference between the upstream and downstream of the weir in the early stages, the flow was relatively fast. With the continuous flow, by 1360s, the water level difference between the upstream and downstream of the weir gradually decreased to a point where they were basically level. After that, the water level continued to rise, eventually completely submerging the side wall openings.

[0068] Table 1. Nodes of the flood spread path in the case of cavitation configuration

[0069] Further, please refer to Figure 9 , Figure 9 This is a schematic diagram of the flooding simulation test propagation path provided in this application embodiment. Room 2 serves as the starting room for flooding. After the leakage flow from the top pipe, continuous water leakage impacts room 2. The water in room 2 mainly flows down to room 5 on the first floor in a waterfall-like manner through the ground holes, while a small amount of water leaks out to room 3 on the second floor through the horizontal door gaps. Further, as the water level in room 5 continues to rise, it will leak out to room 6 through the side wall holes, and then gradually spread to the first-floor corridor, and flow out to room 4 through the horizontal door gaps. The water in room 3 on the second floor will gradually spread to the second-floor stairwell and the second-floor corridor. The water in the second-floor stairwell will flow down to the first-floor stairwell through two steps, and then spread to rooms 6 and 4 respectively. The water in the second-floor corridor will gradually spread to room 1.

[0070] Therefore, this application can reproduce the actual flooding process and provide real data, allowing for intuitive observation of the spread path, accumulation process and distribution of water in the complex environment of a nuclear power plant, thereby providing data support for safety design and emergency strategy formulation.

[0071] In practical applications, after the pipe at the top of room 2 on the second floor leaks, the leaked water mainly falls into room 5 on the first floor through the hole in the ground. Since all the water in room 5 on the first floor eventually flows out through the hole in the side wall, based on the principle of mass conservation, in the free outflow state, the outflow rate of the hole in the ground of room 2 on the second floor can be determined by determining the outflow rate of the hole in the side wall of room 5 on the first floor.

[0072] Specifically, as an optional implementation, after completing the flood simulation test of the hole configuration under flood conditions, the method further includes: Return to the process of adjusting the internal physical model of the nuclear power plant building according to the flooding parameters of the hole configuration flooding condition, and re-simulate the flooding simulation test of the hole configuration flooding condition, recording the hydraulic parameters during the flooding simulation process, until the number of flooding simulation tests of the hole configuration flooding condition reaches the preset threshold. The average value of each hydraulic parameter in all flooding simulation processes was calculated and used as the final flooding simulation test result.

[0073] In this embodiment of the application, after completing the flood simulation test of a single hole configuration flood condition, the process can return to the pre-test preparation steps of debugging the internal physical model of the nuclear power plant building according to the flood parameters of the hole configuration flood condition. After debugging, the gate is reopened, and a preset pipeline leakage is simulated. All measuring instruments are controlled to start working synchronously and the hydraulic parameters during the flood simulation process are recorded.

[0074] Furthermore, by repeatedly conducting flood simulation tests under the condition of a hole configuration under pre-set flood simulation test thresholds, random errors are eliminated, and the average value of hydraulic parameter data from multiple flood simulations is calculated. This yields more realistic and scientific key hydraulic characteristic parameters, such as visualized data of the diffusion path and quantitative relationship curves of water level, flow velocity, and flow rate over time. This improves the reliability and scientific rigor of safety design and emergency strategy formulation within nuclear power plant buildings.

[0075] Please see Figure 10 , Figure 10 This is a schematic diagram of a flood simulation device based on a perforated configuration provided in an embodiment of this application. This application also provides a flood simulation device based on a perforated configuration that can implement the aforementioned flood simulation method based on a perforated configuration. The device includes: Model building module 1010 is used to build a physical model of the interior of a nuclear power plant. The model debugging module 1020 is used to determine the flooding parameters of the hole configuration flooding condition and to debug the internal physical model of the nuclear power plant building according to the flooding parameters of the hole configuration flooding condition. The flood simulation module 1030 is used to simulate and execute the flood simulation test of the hole configuration, record the hydraulic parameters during the flood simulation process, until the flood simulation test of the hole configuration is completed.

[0076] It is understood that the content of the above method embodiments is applicable to the present device embodiments. The specific functions implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0077] Please see Figure 11 , Figure 11 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application. The electronic device includes: The processor 1101 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application. The memory 1102 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 1102 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 1102 and is called and executed by the processor 1101 using the methods described in the embodiments of this application. Input / output interface 1103 is used to implement information input and output; The communication interface 1104 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). Bus 1105 transmits information between various components of the device (e.g., processor 1101, memory 1102, input / output interface 1103, and communication interface 1104); The processor 1101, memory 1102, input / output interface 1103 and communication interface 1104 are connected to each other within the device via bus 1105.

[0078] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0079] It is understood that the content of the above method embodiments is applicable to this storage medium embodiment. The specific functions implemented in this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0080] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0081] It is understood that the content of the above method embodiments is applicable to the embodiments of this program product. The specific functions implemented by the embodiments of this program product are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0082] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0083] This application provides a flooding simulation method and related equipment based on a perforated configuration. By constructing a physical model of the interior of a nuclear power plant and testing the flooding simulation process under the perforated configuration conditions using the physical model, the method can intuitively observe the diffusion path, accumulation process, and distribution state of water flow in the complex environment of a nuclear power plant, effectively improving the accuracy of flooding simulation and providing data support for the safety design and emergency strategy formulation of the interior of a nuclear power plant.

[0084] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0085] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0086] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0087] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0088] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0089] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0090] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0091] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0092] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0093] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0094] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A flooding simulation method based on a perforated configuration, characterized in that, The method includes the following steps: Constructing a physical model of the interior of a nuclear power plant; Determine the flooding parameters for the flooding condition of the hole configuration, and adjust the internal physical model of the nuclear power plant building according to the flooding parameters of the hole configuration. A flood simulation test of the hole configuration under flood conditions is performed, and the hydraulic parameters during the flood simulation process are recorded until the flood simulation test of the hole configuration under flood conditions is completed.

2. The method according to claim 1, characterized in that, The process of determining the flooding parameters for the flooding condition of the perforated configuration, and adjusting the internal physical model of the nuclear power plant building based on the flooding parameters of the perforated configuration, includes: Determine the flooding point, flood outflow type, and flood duration for the flooding conditions of the cavity configuration; Based on the flooding initiation point and the flood outflow type, the internal physical model of the nuclear power plant building was adjusted. The flood outflow types include ground hole outflow and sidewall hole outflow.

3. The method according to claim 1, characterized in that, The simulation test of the flooding condition of the hole configuration is carried out, and the hydraulic parameters during the flooding simulation process are recorded until the flooding simulation test of the hole configuration is completed, including: A flood simulation test was conducted based on a preset flood duration to simulate the flooding conditions of the hole configuration, and flood simulation measuring instruments were deployed; wherein, the flood simulation measuring instruments include a camera, a water level gauge and a particle image velocimeter. By combining a camera, a water level gauge, and a particle image velocimeter, the hydraulic parameters during the flooding simulation process are measured and recorded until the flooding simulation test of the hole configuration is completed.

4. The method according to claim 3, characterized in that, The method further includes: By combining the video data captured by the camera, the water level data measured by the water level gauge and the particle image velocimeter, and the flow velocity data, the spread path of the flooded condition of the hole configuration is analyzed.

5. The method according to claim 1, characterized in that, After completing the flood simulation test of the aforementioned hole configuration under flood conditions, the method further includes: Return to the process of adjusting the internal physical model of the nuclear power plant building according to the flooding parameters of the hole configuration flooding condition, and re-simulate the flooding simulation test of the hole configuration flooding condition, recording the hydraulic parameters during the flooding simulation process, until the number of flooding simulation tests of the hole configuration flooding condition reaches the preset threshold. The average value of each hydraulic parameter in all flooding simulation processes was calculated and used as the final flooding simulation test result.

6. The method according to claim 1, characterized in that, The construction of the internal physical model of the nuclear power plant includes: Based on the internal structure of a nuclear power plant, a physical model of the internal structure of the nuclear power plant is constructed, and a circulating water storage tank, a water supply centrifugal pump, and a discharge pipeline are provided. The internal physical model of the nuclear power plant is designed as a two-layer structure, constructed using plexiglass, steel, and pulleys.

7. A flood simulation device based on a perforated configuration, characterized in that, The device includes: The model building module is used to build physical models of the interior of nuclear power plants; The model debugging module is used to determine the flooding parameters of the hole configuration flooding condition, and to debug the internal physical model of the nuclear power plant building according to the flooding parameters of the hole configuration flooding condition. The flooding simulation module is used to simulate and execute the flooding simulation test of the hole configuration, record the hydraulic parameters during the flooding simulation process, and complete the flooding simulation test of the hole configuration.

8. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method according to any one of claims 1 to 6.

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

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