A clog prevention system and method for cooling a water intake system

Abstract

The application provides a kind of for cooling water intake system and method for preventing and controlling blockage, system includes: cold source blockage investigation module, flow field active guide avoidance module, cascade filtration module, pump house system research module, monitoring and early warning module, emergency response module, from the angle of system design, equipment selection and process arrangement, carry out multidimensional, depth, comprehensive blockage prevention and control research and design of heavy fineness.Based on the blockage prevention and control system, the blockage is prevented and controlled from the time dimension before, during and after the blockage event, and the space dimension of the sea area and the land area.The blockage prevention and control system and method provided by the embodiment of the application establish a complete prevention and control measure system, comprehensively improve the active defense capability of the cooling water intake system to potential blockage, reduce the occurrence of cooling water intake blockage event, and systematically improve the safety and stability of the nuclear power plant cooling water intake.

Description

Technical Field

[0001] This invention relates to the field of infrastructure technology for cooling water intake engineering, specifically to a blockage prevention system and method for cooling water intake systems. Background Technology

[0002] Seawater serves as a heat sink for nuclear power plants, providing cooling water for both the nuclear island and conventional islands. Therefore, the unobstructed flow of the cooling water intake system is crucial for ensuring nuclear power safety. However, in recent years, the deterioration of the marine ecological environment and the complexity and unpredictability of marine life have made the cooling water intake system of nuclear power plants highly susceptible to blockages. These blockages are characterized by complexity, variability, and suddenness, potentially causing power reductions or reactor shutdowns. This not only threatens the safety of the nuclear power plant but also disrupts its normal power generation, resulting in severe consequences.

[0003] Currently, the prevention and control measures for blockages in nuclear power plant cooling water intakes are mostly based on single-point technology research, lacking a systematic prevention and control plan. The water intake system involves multiple links from the sea to the land, and insufficient design of prevention and control capabilities in key links could have a domino effect. Most nuclear power plants' water intake interception facilities are mainly located at the intake gate and inside the open channel. Most plants deploy multiple barriers downstream according to mesh size, intercepting marine organisms or floating debris already in the open channel. The deployment of these barriers is primarily passive, failing to provide active defense against blockages. As a result, water intake safety incidents caused by blockages from marine organisms or debris are increasing. Summary of the Invention

[0004] In view of this, the present invention provides a blockage prevention and control system and method for a cooling water intake system, which solves the problem of preventing blockages from clogging the cooling water intake system and causing water intake safety incidents.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] In a first aspect, embodiments of the present invention provide a blockage prevention system for a cooling water intake system, comprising:

[0007] The cold source blockage investigation module is used to investigate potential blockages in the cooling water intake system and generate investigation results.

[0008] The active flow field guidance module is used to guide blockages away from the water intake.

[0009] A tiered filtering module is used to configure different interception devices to intercept blockages in stages based on the survey results;

[0010] The pump house system research module is used to analyze and study the cooling water intake system and obtain pump house system solutions to improve water intake stability.

[0011] The monitoring and early warning module is used to monitor the flow field active avoidance module, cascade filtration module, pump room system research module and cooling water intake system in real time, predict the risk of blockage in advance, and issue an alarm message if the risk of blockage is predicted.

[0012] The emergency response module is used to formulate corresponding emergency plans based on the investigation results and the blockage risk, and to implement emergency measures based on the alarm information.

[0013] The blockage prevention and control system provided in this invention establishes a complete prevention and control system, comprehensively improves the active defense capability of the cooling water intake system against potential blockages, reduces the occurrence of cooling water blockage events, and systematically improves the safety and stability of cooling water intake in nuclear power plants.

[0014] Optionally, the survey results include: the types of potential blockages and the risk of blockages at different time periods.

[0015] This invention establishes a complete system for investigating water intake blockages, generates investigation results, and guides the construction of monitoring and early warning modules, the implementation of active flow field avoidance technology, the configuration of cascade filtration system modules, and the formulation of emergency response plans based on the types of potential blockages and the blockage risk in different months. It provides data support for the marine engineering design of water intakes, the comprehensive prevention and scientific management of blockages, and provides a scientific basis for subsequent early warning, emergency response, and cold source team decision-making regarding risky blockages in cold sources.

[0016] Optionally, the flow field active avoidance module guides the contaminants away from the water intake by optimizing the engineering design of the water intake gate and optimizing the layout of the debris barrier.

[0017] The active flow field guidance module of this invention is based on the laws of natural flow fields. It optimizes the engineering design of the intake gate to guide contaminants away from the intake, such as by optimizing the angle of the curved embankment of the intake gate, which can greatly reduce the amount of contaminants entering the water intake system. It also optimizes the layout of the debris barrier, such as optimizing the angle and position, which can significantly improve the self-cleaning efficiency of the debris barrier. This greatly enhances the water intake system's ability to "guide," "block," and "clean" blockages, thereby reducing the blockage interception load on the water intake cascade filtration system.

[0018] Optionally, the interception device includes:

[0019] Quick-release net bag, optimized for carrying and clearing blockages through improved bag body and detachable design; variable aperture trash can, the aperture of the trash can is controlled by changing the relative positions of the fixed and movable trash cans;

[0020] Hydraulic grab bucket cleaning machine, used to clear blockages;

[0021] Rotary cleaning machines are used for continuous cleaning of floating and suspended foreign objects.

[0022] The interception device of the cascade filtration system module in the blockage prevention and control system provided by this invention has been optimized to mitigate the adverse effects of large-scale debris intrusion, reduce the pressure on the water intake pumping station to block debris, and buy more emergency response time for on-site operations.

[0023] Optionally, the pump house system study module designs whether the circulating water system in the pump house is shared or separately constructed with the important plant water system or the filtration part of the plant water system by studying the needs, filter hole diameter, filtration capacity and clogging risk.

[0024] The blockage control system provided by this invention features a rational design for the pump room, which improves the flexibility and proactivity in preventing and controlling water intake blockages.

[0025] Optionally, the emergency response module controls the circulating water pump with frequency conversion speed regulation according to the corresponding emergency plan, and adjusts the circulating water volume according to different blockage risks.

[0026] The emergency response module in the blockage prevention and control system provided by this invention improves the flexibility of nuclear power plant cooling water intake through variable flow operation, and reduces the probability of shutdown and reactor failure caused by cold source disasters.

[0027] Secondly, embodiments of the present invention provide a method for preventing and controlling blockages in a cooling water intake system, applicable to any of the blockage prevention and control systems described in the first aspect, including: preventing and controlling blockages from multiple time dimensions (before a blockage event occurs, during a blockage event occurs, and after a blockage event occurs) and multiple spatial dimensions (marine area and land area).

[0028] The blockage prevention and control method provided in this invention starts from multiple time and space dimensions, from early warning before blockage events occur to prevention and control after they occur, and from sea areas to land areas, establishing a complete prevention and control system. This reduces the occurrence of cooling water blockage events and systematically improves the safety and stability of cooling water intake in nuclear power plants.

[0029] Optionally, the process of controlling blockages from multiple time dimensions:

[0030] Before a blockage event occurs, the cold source blockage investigation module identifies the types of potential blockages, and the monitoring and early warning module predicts the occurrence of blockage risks.

[0031] When a blockage occurs, the flow field active avoidance module guides the blockage away from the water intake, the cascade filtration module intercepts the blockage in stages, and the water intake of the pump designed in the pump station system research module is reduced to reduce the amount of blockage entrained.

[0032] After a blockage occurs, the emergency response module is used to develop an emergency plan to restore the cooling water intake system to operation.

[0033] The blockage prevention and control method provided by the embodiments of the present invention can predict the occurrence of blockage risk in advance to provide support for responding to blockage events. When a blockage event occurs, it can ensure the water intake of important plant water systems or plant water systems and can deal with the blockage event as soon as possible.

[0034] Optionally, the process of controlling blockages from multiple spatial dimensions:

[0035] Land-based component: Through the systematic research module of the pump house system, a pump house system scheme to improve water intake stability is obtained and the pump house is designed. A monitoring and early warning module is built to monitor the cooling water intake system in real time. If a blockage risk is detected, an alarm message is issued. The emergency response module is linked with the monitoring and early warning module to implement emergency measures based on the alarm message.

[0036] In the marine area: conduct a blockage survey to identify the types of blockages and the blockage risk at different times, monitor the occurrence of blockage risk through a monitoring and early warning module, guide blockages away from the cooling water intake system using a flow field active avoidance module, and intercept and clear blockages through a cascade filtration module.

[0037] The blockage control method provided in this invention ensures stable system operation through pump station design and monitoring control in the land area, and reduces the entry of blockages into the water intake system through optimized configuration in the marine area, thereby improving the efficiency of blockage removal. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of a blockage prevention system for a cooling water intake system provided in an embodiment of the present invention;

[0040] Figure 2 The digital simulation diagrams show the smoothness of the test when the angle between the barrier net and the embankment is 0°, 90° and 145° in the active flow field guidance module provided in the embodiment of the present invention.

[0041] Figure 3 This is a schematic diagram of the design of a cascaded filtration module provided in an embodiment of the present invention;

[0042] Figure 4This is a schematic diagram of the structure of the quick-detachable mesh bag in the cascade filtration module provided in an embodiment of the present invention.

[0043] Figure 5 This is a schematic diagram of the variable aperture filter screen in the cascade filtration module provided in an embodiment of the present invention;

[0044] Figure 6 This is a schematic diagram showing the installation locations of each monitoring facility in the monitoring and early warning module provided in this embodiment of the invention;

[0045] Figure 7 A flowchart illustrating the blockage control process across multiple time dimensions in a blockage control method for a cooling water intake system provided in an embodiment of the present invention;

[0046] Figure 8 This is a flowchart illustrating the multi-spatial-dimensional blockage control process in a blockage control method for a cooling water intake system provided in an embodiment of the present invention. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] The technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] This invention provides a blockage prevention system for cooling water intake systems. The system is designed with a systematic approach, following the principles of "active defense, in-depth deployment, tiered filtration, and permanent-temporary integration." It comprehensively enhances water intake safety from three aspects: system design, equipment selection, and process layout, establishing a complete prevention and control system that allows each link to complement each other, achieving a synergistic effect of "1+1>2." Figure 1 As shown, the system includes:

[0050] The cold source blockage investigation module 1 is used to investigate potential blockage data in the cooling water intake system and generate investigation results. Specifically, in one embodiment, the investigation results include: the types of potential blockages and the blockage risk at different time periods. This invention, from the perspective of cold source blockage prevention and control, extracts a blockage investigation method applicable to nuclear power plants, and generates a blockage list and risk calendar, compiling cold source blockage investigation standards, filling domestic and international gaps. By investigating the type composition and quantity distribution characteristics of cold source blockages in the sea area where the nuclear power plant is located and its adjacent sea areas, the temporal and spatial distribution dynamics of cold source blockages are assessed. The cold source blockage list and risk calendar are compiled and organized. Based on the types of potential blockages and the blockage risk at different months, it can guide the construction of monitoring and early warning modules, the implementation of active flow field avoidance technology, the configuration of cascade filtration system modules, and the formulation of emergency response plans. It provides data support for the marine engineering design of the intake, comprehensive prevention and scientific management of blockages, and provides a scientific basis for subsequent early warning, emergency response, and cold source team decision-making regarding risky blockages in cold sources.

[0051] The flow field active avoidance module 2 is used to guide blockages away from the water intake. Specifically, in one embodiment, the flow field active avoidance module guides contaminants away from the water intake by optimizing the engineering design of the water intake gate and optimizing the layout of the debris barrier. The flow field active avoidance of this invention is an important means to improve the active defense capability of cooling water intake systems against blockages. Based on the laws of natural flow fields, it proposes an integrated concept of "guidance, interception, and clearing," systematically optimizing water intake facilities in both marine and land areas: optimizing the engineering design of the water intake gate guides contaminants away from the water intake, such as optimizing the angle of the arc-shaped dike of the water intake gate, which can greatly reduce the amount of contaminants entering the water intake system. Figure 2 As shown, from left to right, these are the smooth simulation diagrams of the numerical simulation test when the angle between the barrier net and the straight dike is 0°, 90°, and 145°. Optimizing the layout of the barrier net, such as optimizing the layout angle and position, can significantly improve the self-cleaning efficiency of the barrier net, reduce the operation and maintenance pressure, and save the operation and maintenance costs of the barrier net. This greatly enhances the water intake system's ability to "guide," "block," and "clean" blockages, thereby reducing the blockage interception load of the water intake cascade filtration system.

[0052] For example, the active flow field avoidance module mainly includes two parts:

[0053] The first part comprehensively considers factors such as the types of potential disaster-causing materials, the main wave direction and the main wind direction of the water intake area, and uses the flow field to guide marine organisms and debris to "actively" stay away from the water intake. The design of active avoidance water intake open channels needs to be based on the site conditions (blockage risk type, main wave direction, main wind direction, etc.), and each plant should have its own policy and discussion.

[0054] The second part utilizes the guiding effect of the flow field on pollutants to achieve effective interception and efficient cleaning of the debris-blocking net. This is mainly reflected in the following two methods: 1) The first debris-blocking net near the open channel inlet can be set up in a "V" shape according to the water intake conditions, using the reciprocating flow at the inlet to achieve self-cleaning of the net; 2) The debris-blocking net inside the open channel can utilize the concentration effect of the water flow in the bend to determine the location and angle of the net, and adopt certain flow guidance measures in the water intake open channel to improve the local flow field and give the water flow a certain concentration effect. The arrangement of the drift-blocking facilities inside the open channel should preferably adopt a "I" type net. For example, the placement position is with the origin "O" of the "short side dike" as the endpoint, and the "long side dike" side is inclined downstream. Its horizontal placement angle should be close to the average deflection angle of the water flow in the backflow area of ​​the "short side dike" side at the beginning of the straight section of the open channel (preliminary consideration is to use a horizontal deflection angle of 135°), and a guide plate should be installed on the surface of the water body at the front edge of the debris-blocking net.

[0055] The cascade filtration module 3 is used to configure different interception devices to intercept blockages in stages based on the survey results. For example, the cascade filtration system aims to distribute the blockage load stepwise to each level of screens and filtration devices. To improve the efficiency of blockage interception and cleaning at each stage, it innovatively proposes a cascade filtration system configuration concept based on the results of cold source blockage surveys, and optimizes the equipment for major interception facilities (screens, cleaning machines) from marine to land areas. Based on the potential blockage categories, the cascade filtration system design is carried out starting from the flow path requirements of downstream user equipment (such as condensers served by circulating water systems, important plant water systems, or heat exchangers served by plant water systems), including the selection, arrangement sequence, and aperture settings of the interception devices. Figure 3 The diagram shown is a schematic design of a tiered filtering module in a specific embodiment.

[0056] Specifically, in one embodiment, the interception device includes:

[0057] Quickly remove the mesh bag, including guiding and removing the mesh bag, such as... Figure 4 As shown, this is a structural diagram of a quick-detachable net bag. By improving the bag body and the detachable design, it optimizes the load-bearing and cleaning of blockages and has the following advantages: (1) The new type of net greatly increases the water flow area by utilizing the side bag body, which improves the load-bearing capacity of pollutants; (2) The rear net bag can be quickly detached, which facilitates on-site operation and maintenance under normal working conditions and facilitates rapid response when a blockage occurs; (3) The tail of the net bag is equipped with a tension sensor. When a lot of debris accumulates, the tension sensor will issue an alarm signal, and the net bag can be quickly detached and cleaned, realizing the intelligent management of the net.

[0058] Variable aperture trash cans control the aperture of the trash can by changing the relative positions of fixed and movable trash cans. Under varying flow conditions in seawater systems and in the event of large-scale debris intrusion, the trash can adapts to different conditions, reducing the likelihood of damage and mitigating the adverse effects of large-scale debris intrusion on system operation. Figure 5 The diagram shown is a schematic of the structure of a variable aperture trash can.

[0059] The hydraulic grab bucket cleaning machine is used to clear blockages, which can improve cleaning efficiency and effectively solve the shortcomings of existing coarse filtration solutions for nuclear power cold sources. In addition, the equipment has the characteristics of novel structure, simple operation, high efficiency, high cost performance and high reliability.

[0060] A rotary bar screen cleaner is used for continuous cleaning of floating and suspended foreign objects. For example, a rotary bar screen cleaner can effectively remove floating and suspended foreign objects. The rotary bar screen cleaner cleans continuously during operation, and the working rakes can be selected according to the type of foreign objects under different working conditions, improving cleaning efficiency. This equipment can continuously clean and remove debris with high efficiency, effectively removing floating debris and avoiding the problems of low efficiency and high failure rate of existing rake-type bar screen cleaners.

[0061] The interception device of the cascade filtration system module in the blockage prevention and control system provided by this invention has been optimized to mitigate the adverse effects of large-scale debris intrusion, reduce the pressure on the water intake pumping station to block debris, and buy more emergency response time for on-site operations.

[0062] The pump house system research module 4 is used to analyze and study the cooling water intake system, obtain pump house system solutions to improve water intake stability, and design the pump house. Specifically, in one embodiment, the pump house system research module designs the shared or separate construction of the circulating water system and the important plant water system or plant water system filtration section in the pump house by studying requirements, filter diameter, filtration capacity, and clogging risk. It should be noted that "important plant water system" and "plant water system" are technical terms used to distinguish the cooling water systems corresponding to different nuclear power unit models. The comparison of the combined / separate construction schemes for the circulating water and important plant water systems or plant water systems includes considerations from the perspective of filter diameter, water flow rate, foundation conditions, land area, civil engineering costs, and power supply conditions. The disadvantage of the separate construction scheme is that the design margin of the important plant water system or plant water system is relatively small. This invention optimizes the traditional separate construction scheme by adding a backup water intake channel from the circulating water pump house to the important plant water system or plant water system, further improving the active defense capability of the separate construction scheme. In addition, appropriately increasing the submersion depth redundancy of the circulating water pump ensures its safe and stable operation. The blockage control system provided by this invention features a rational design of the pump house, improving the flexibility and proactivity in preventing and controlling water intake blockages.

[0063] The monitoring and early warning module 5 is used to monitor the flow field active avoidance module, the cascade filtration module, the pump house system research module, and the cooling water intake system in real time, predicting blockage risks in advance. If a blockage risk is predicted, an alarm message is issued. Specifically, in one embodiment, the monitoring and early warning module includes three parts:

[0064] Monitoring hardware modules include: sonar systems, optical systems, small weather stations, and monitoring facilities such as debris screen tension gauges. Figure 6 The image shows the installation locations of each monitoring facility. The installation locations of each monitoring facility are related to the actual situation and are only used as examples, but are not limited to this.

[0065] The monitoring-alarm software module, based on a large amount of monitoring data, uses artificial intelligence and big data to define the classification standards for congestion risk and processes real-time monitoring data to obtain real-time alarm level signals.

[0066] The prediction and early warning software module performs deep learning, processing, and construction of a monitoring information database from multi-source monitoring data to achieve prediction and early warning of comprehensive risks.

[0067] The monitoring and early warning module enables real-time monitoring of the cooling water intake system and early warning of blockage events, reducing the probability of blockage events or mitigating their severe impact. The monitoring and early warning system integrates marine blockage risk monitoring and prediction with water intake system equipment status assessment, connecting the entire process of risk monitoring, prediction, and risk response. It effectively achieves both awareness and prevention of blockage risks, thereby enabling timely triggering of the power plant's emergency response measures.

[0068] Emergency response module 6 is used to formulate corresponding emergency plans based on investigation results and blockage risks, and to implement emergency measures based on alarm information. Specifically, in one embodiment, the emergency response module uses variable frequency speed control to regulate the circulating water pump according to the corresponding emergency plan, and adjusts the circulating water volume according to different blockage risks. For example, the variable flow design (variable frequency speed control) of the circulating water system adjusts the pump speed by controlling the power supply frequency of the pump motor, thereby changing the pump performance curve. Different power supply frequencies correspond to different flow rates, allowing the circulating water volume to be provided according to the needs of the condenser. The use of variable frequency speed control for the circulating water pump allows for adjustment of the circulating water volume according to different seasons, seawater temperatures, and blockage risks, improving the flexibility of nuclear power plant cold source water intake and reducing the probability of shutdowns or reactor failures caused by cold source hazards through variable flow operation.

[0069] On the other hand, corresponding emergency plans are formulated according to different risk objects and different risk levels. The emergency plans include blockage control measures (such as salvage, cleaning, and changing the aperture of the trash can) and implementation measures related to power plant operation. Specifically, the emergency plans include the following aspects: (1) relevant conditions (or threshold parameters) set by each professional project and corresponding action items; (2) emergency response resource mobilization plan, including the response content of the main control mobilization of other relevant departments; (3) multi-unit response coordination plan, with the goal of avoiding unplanned shutdown of multiple units in succession, and providing cold source early warning, intervention and cooperation plan for each unit when the situation deteriorates; (4) cold source emergency intervention plan (entry conditions and operation intervention actions).

[0070] In addition, emergency response agreements with other relevant departments, local governments, businesses, and fishermen are established, and response times for external support are determined to mobilize resources from other departments in the event of a water intake blockage.

[0071] The blockage prevention and control system provided in this invention establishes a complete prevention and control system, comprehensively improves the active defense capability of the cooling water intake system against potential blockages, reduces the occurrence of cooling water blockage events, and systematically improves the safety and stability of cooling water intake in nuclear power plants.

[0072] This invention also provides a method for preventing blockages in a cooling water intake system, applicable to any of the blockage prevention systems described above, including: preventing blockages from multiple time dimensions (before a blockage event occurs, during a blockage event occurs, and after a blockage event occurs) and multiple spatial dimensions (marine area and land area).

[0073] The blockage prevention and control method provided in this invention starts from multiple time and space dimensions, from early warning before blockage events occur to prevention and control after they occur, and from sea areas to land areas, establishing a complete prevention and control system. This reduces the occurrence of cooling water blockage events and systematically improves the safety and stability of cooling water intake in nuclear power plants.

[0074] Specifically, in one embodiment, such as Figure 7 As shown, this illustrates the process of controlling blockages from multiple time dimensions:

[0075] Step S11: Before a blockage event occurs, the cold source blockage investigation module is used to identify the types of potential blockages, and the monitoring and early warning module is used to predict the occurrence of blockage risk.

[0076] Step S12: When a blockage event occurs, the flow field active avoidance module guides the blockage away from the water intake, the cascade filtration module intercepts the blockage in stages, and the water intake of the pump designed in the pump room system study module is reduced to reduce the amount of blockage entrained.

[0077] Step S13: After a blockage occurs, the emergency response module is used to resolve the issue and restore the cooling water intake system to operation.

[0078] The blockage prevention and control method provided in this invention can predict the occurrence of blockage risk in advance to provide support for responding to blockage events. When a blockage event occurs, it can ensure the water intake of the (important) plant water system and deal with the blockage event as soon as possible.

[0079] Specifically, in one embodiment, such as Figure 8 As shown, this illustrates the process of controlling blockages from multiple spatial dimensions:

[0080] Step S21: Land Area: Through the pump station system research module, a pump station system scheme to improve water intake stability is obtained and the pump station is designed. A monitoring and early warning module is built to monitor the cooling water intake system in real time. If a blockage risk is detected, an alarm message is issued. The emergency response module is linked with the monitoring and early warning module to implement emergency measures based on the alarm message.

[0081] Step S22: Marine Area: Conduct a blockage survey to identify the types of blockages and the blockage risk at different times. Monitor the occurrence of blockage risk through the monitoring and early warning module. Use the flow field active avoidance module to guide the blockages away from the cooling water intake system. Use the configuration of the cascade filtration module to intercept and clear the blockages.

[0082] The blockage control method provided in this invention ensures stable system operation through pump station design and monitoring control in the land area, and reduces the entry of blockages into the water intake system through optimized configuration in the marine area, thereby improving the efficiency of blockage removal.

[0083] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A blockage prevention system for a cooling water intake system, characterized in that, include: The cold source blockage investigation module is used to investigate potential blockages in the cooling water intake system and generate investigation results. The flow field active guidance module is used to guide blockages away from the water intake by optimizing the engineering design of the water intake gate and the layout of the debris barrier. A tiered filtering module is used to configure different interception devices to intercept blockages in stages based on the survey results; The pump house system research module is used to analyze and study the cooling water intake system and obtain pump house system solutions to improve water intake stability. The monitoring and early warning module is used to monitor the flow field active avoidance module, cascade filtration module, pump room system research module and cooling water intake system in real time, predict the risk of blockage in advance, and issue an alarm message if the risk of blockage is predicted. The emergency response module is used to formulate corresponding emergency plans based on the investigation results and the blockage risk, and to implement emergency measures based on the alarm information.

2. The blockage prevention system for a cooling water intake system according to claim 1, characterized in that, The survey results include: Types of potential blockages and the risk of blockages at different times.

3. The blockage prevention system for a cooling water intake system according to claim 1, characterized in that, The interception device includes: The quick-release mesh bag optimizes the handling and removal of blockages through improved bag design and detachable features. Variable aperture trash cans control the aperture of the trash cans by changing the relative positions of the fixed and movable trash cans. Hydraulic grab bucket cleaning machine, used to clear blockages; Rotary cleaning machines are used for continuous cleaning of floating and suspended foreign objects.

4. The blockage prevention system for a cooling water intake system according to claim 3, characterized in that, The pump house system research module designs whether the circulating water system in the pump house can be shared or separately constructed with the important plant water system or the filtration part of the plant water system by studying the needs, filter hole diameter, filtration capacity and clogging risk.

5. The blockage prevention system for a cooling water intake system according to claim 1, characterized in that, The emergency response module controls the circulating water pump according to the corresponding emergency plan and adjusts the circulating water volume according to different blockage risks.

6. A method for preventing blockages in a cooling water intake system, characterized in that, The blockage control system according to any one of claims 1-5 includes: The blockage is controlled from multiple time dimensions, including before, during, and after the blockage event, as well as multiple spatial dimensions, including the marine and land areas.

7. The method for preventing blockages in a cooling water intake system according to claim 6, characterized in that, The process of preventing and controlling blockages from multiple time dimensions: Before a blockage event occurs, the cold source blockage investigation module identifies the types of potential blockages, and the monitoring and early warning module predicts the occurrence of blockage risks. When a blockage occurs, the flow field active avoidance module guides the blockage away from the water intake, the cascade filtration module intercepts the blockage in stages, and the water intake of the pump designed in the pump station system research module is reduced to reduce the amount of blockage entrained. After a blockage occurs, the emergency response module is used to develop an emergency plan to restore the cooling water intake system to operation.

8. The method for preventing blockages in a cooling water intake system according to claim 6, characterized in that, The process of preventing and controlling blockages from multiple spatial dimensions: Land-based component: Through the systematic research module of the pump house system, a pump house system solution to improve water intake stability is obtained and the pump house is designed. A monitoring and early warning module is built to monitor the cooling water intake system in real time. If a blockage risk is detected, an alarm message is issued. The emergency response module is linked with the monitoring and early warning module to implement emergency measures based on the alarm message. In the marine area: conduct a blockage survey to identify the types of blockages and the blockage risk at different times, monitor the occurrence of blockage risk through a monitoring and early warning module, guide blockages away from the cooling water intake system using a flow field active avoidance module, and intercept and clear blockages through a cascade filtration module.

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