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CN-121999593-A - Nuclear power plant cold source safety monitoring and early warning system and implementation method thereof

CN121999593ACN 121999593 ACN121999593 ACN 121999593ACN-121999593-A

Abstract

The invention discloses a nuclear power plant cold source safety monitoring and early warning system and an implementation method thereof, wherein an entrance gate area, a near sea monitoring area and an open sea early warning area are sequentially arranged from a water intake to the outside of the system; the system comprises a sewage blocking net, an offshore monitoring area, an offshore early warning area, a second chain, a third chain, a sensor array, a plurality of layers of offshore monitoring floating bodies which are arranged in an arc manner, wherein the offshore monitoring floating bodies are arranged in the offshore monitoring area and are connected through the first chain, the offshore monitoring floating bodies which are arranged in the arc manner are arranged in the offshore early warning area and are connected through the second chain, and the centers of the areas are connected in series through the third chain to form a framework structure which takes the chain as a vertebra and diffuses to two sides. The method comprises the steps of carrying out wide area scanning through an open sea early warning area and generating primary early warning, carrying out tracking and risk prediction on a target through a near sea monitoring area and generating secondary warning, and carrying out final confirmation through an entrance area and triggering tertiary response and interception. The intelligent grading early warning and linkage response system realizes three-dimensional and full-coverage monitoring from the open sea to the water intake, and remarkably improves early warning aging and disposal efficiency through intelligent grading early warning and linkage response.

Inventors

  • RONG HUA
  • HAN ZIYE
  • Fan Xinglang
  • GENG YAN
  • WEI JIANGUANG

Assignees

  • 中冶检测认证有限公司
  • 中冶建筑研究总院有限公司

Dates

Publication Date
20260508
Application Date
20260211

Claims (10)

  1. 1. A nuclear power plant cold source safety monitoring and early warning system is characterized in that an entrance zone (1), an offshore monitoring zone (2) and an open sea early warning zone (3) are sequentially formed from a water intake to the outside; a sensor array is integrated on the dirt blocking net (11) of the entrance area (1); A plurality of offshore monitoring floating bodies (21) are arranged in the offshore monitoring area (2), the plurality of offshore monitoring floating bodies (21) are arranged in an arc line by taking the middle point of the dirt blocking net (11) as the center of a circle, a plurality of layers are arranged at equal intervals, the plurality of offshore monitoring floating bodies (21) arranged in an arc manner in each layer are connected through a first chain (22), and an offshore monitoring assembly is arranged on the offshore monitoring floating bodies (21); A plurality of open sea monitoring floating bodies (31) are arranged in the open sea early warning area (3), the plurality of open sea monitoring floating bodies (31) are arranged in an arc line by taking the middle point of the dirt blocking net (11) as the center of a circle, the plurality of open sea monitoring floating bodies (31) are connected through a second chain (32), and an open sea monitoring assembly is arranged on the open sea monitoring floating bodies (31); The offshore monitoring floating body (21) and the open sea monitoring floating body (31) corresponding to the middle point of the dirt blocking net (11) are connected through a third chain (4), and the third chain (4) is connected with the middle point of the dirt blocking net (11), so that a plurality of offshore monitoring floating bodies (21) and the open sea monitoring floating body (31) form a framework structure which takes the third chain (4) as a vertebra and distributes diffusion to two sides.
  2. 2. The nuclear power plant cold source safety monitoring and early warning system according to claim 1, wherein a plurality of installation frames (12) are arranged on the sewage blocking net (11) in an array mode, the installation frames (12) comprise a plurality of threaded connecting rods (121) penetrating through meshes of the sewage blocking net (11), positioning nuts (13) are screwed on the threaded connecting rods (121), so that the installation frames (12) are fixed on the sewage blocking net (11), and sensors of the sensor array are installed on the installation frames (12).
  3. 3. The nuclear power plant cold source safety monitoring and early warning system according to claim 2, wherein the sensor array comprises a tension sensor, a water quality monitoring sensor, a flow rate sensor and a first underwater camera.
  4. 4. The nuclear power plant cold source safety monitoring and early warning system according to claim 1, wherein the offshore monitoring floating body (21) and the open sea monitoring floating body (31) comprise a floating body (51), a solar panel integration module (52) and a battery module (53), the solar panel integration module (52) is installed on the top surface of the floating body (51), the battery module (53) is installed at the bottom of the floating body (51), and the battery module (53) is used for storing electric energy charged by the solar panel integration module (52) for system use.
  5. 5. The nuclear power plant cold source safety monitoring and early warning system according to claim 4, wherein a plurality of underwater mounting posts (54) are connected to the bottom of the battery module (53), and the side walls of the battery module (53) and the underwater mounting posts (54) are used for integrally mounting the offshore monitoring assembly or the open sea monitoring assembly.
  6. 6. The nuclear power plant cold source safety monitoring and early warning system according to claim 5, characterized in that a basic threaded column is arranged at the bottom of the battery module (53), a threaded hole (541) for connection is arranged at the top end of the underwater installation column (54), a spherical hinge joint (542) is arranged at the bottom end of the underwater installation column (54), a butt threaded column (543) for connection is arranged at the spherical hinge joint (542), a plurality of installation grooves (544) for installing the offshore monitoring assembly or the open sea monitoring assembly are arranged on the side wall of the underwater installation column (54), and the inside of the underwater installation column (54) is used for wiring.
  7. 7. The nuclear power plant cold source safety monitoring and early warning system according to claim 6, wherein the lower part of the underwater installation column (54) is connected with a counterweight body (56) through an L-shaped connecting rod (55), and the counterweight bodies (56) are multiple in number and are arranged around the underwater installation column (54).
  8. 8. The nuclear power plant cold source safety monitoring and early warning system according to claim 7, characterized in that the bottom end of the lowest underwater installation column (54) is connected with an anchor (58) through a chain (57).
  9. 9. The nuclear power plant cold source safety monitoring and early warning system according to claim 1, wherein the offshore monitoring assembly comprises a water surface monitoring radar, a first underwater sonar and a second underwater camera, and the offshore monitoring assembly comprises a remote warning radar, a second underwater sonar, a third underwater camera and a water quality sensor.
  10. 10. A method for implementing the nuclear power plant cold source safety monitoring and early warning system according to any one of claims 1 to 9, comprising the following steps: S1, carrying out wide-area scanning on a target sea area through the open sea monitoring floating body (31) of the open sea early warning area (3) and the open sea monitoring assembly on the open sea monitoring floating body, generating first-level early warning when a suspicious target is found and the initial threat of the suspicious target is estimated to be directed at the water intake, and activating the open sea monitoring assembly of the open sea monitoring area (2); S2, accurately tracking and classifying the suspicious targets through the offshore monitoring floating body (21) of the offshore monitoring area (2) and the offshore monitoring components on the offshore monitoring floating body, predicting the migration paths of the suspicious targets based on real-time environment data, generating a secondary alarm when the suspicious targets are predicted to invade a water intake, and pre-starting the sensor array on the dirt blocking net (11) of the entrance area (1); And S3, finally confirming the target through the sensor array on the dirt blocking net (11), generating three-level response when the preset interception condition is met, and automatically or manually executing the interception action.

Description

Nuclear power plant cold source safety monitoring and early warning system and implementation method thereof Technical Field The invention relates to the technical field of cold source safety monitoring and early warning of nuclear power plants, in particular to a cold source safety monitoring and early warning system of a nuclear power plant and an implementation method thereof. Background The cold source safety of the nuclear power plant is a key link for guaranteeing the stable operation of the nuclear power unit. Once the water intake is greatly invaded or blocked by marine disaster-causing objects (such as macroalgae, jellyfish, floating garbage, fishing net and the like), the insufficient flow of a circulating water system can be caused, the power-down operation of a unit and even unplanned shutdown are caused, and huge economic loss and safety risks are caused. At present, the following modes are mainly adopted for monitoring and early warning of cold source safety of a nuclear power plant: Manual inspection and periodic monitoring, namely visual inspection is carried out by a shipman or a worker, or water quality and biological sampling are carried out by using ship carrying equipment periodically. The method has low efficiency, limited coverage, cannot realize real-time continuous monitoring, is greatly influenced by weather sea conditions, and is difficult to cope with sudden and large-scale disaster invasion events. And monitoring by a single or local sensor, namely installing a water quality sensor, a camera or small sonar and other equipment near the water intake. Although the mode realizes a certain degree of automation, the monitoring range is narrow and is usually limited to the vicinity of the gate, and early warning of disaster-causing objects in the formation and migration processes of wider sea areas cannot be carried out. The monitoring data is single, the prediction capability of the target track is lacking, only an alarm of 'arrived' can be provided, but an early warning of 'arriving' is not provided, and a time window reserved for emergency treatment is extremely short. The discrete monitoring system adopts a plurality of independent buoys or monitoring stations which are arranged in the surrounding sea area of the power plant. However, these sites tend to be loosely structured, self-contained, and lack a unified physical and information network architecture. The data is transmitted back in a wireless mode, is easy to be interfered, and has insufficient real-time performance and reliability. The monitoring data of each site is difficult to perform effective space-time synchronization and fusion analysis, and a continuous three-dimensional perception field from open sea to offshore cannot be constructed, so that early warning fragmentation is caused, and systematic risk studying and judging capability is weak. The early warning and treatment are disjoint, the existing monitoring system is mainly focused on sensing and alarming, and the linkage capability of early warning information and rear end physical interception and driving-off equipment is weak. After the alarm occurs, the interception equipment still needs to be manually decided and operated, the best treatment opportunity is delayed in response to the long chain. The key defending line facilities such as the dirt blocking net and the like also lack intelligent state sensing, and the load, damage or blockage conditions of the key defending line facilities cannot be estimated in real time. In summary, the prior art mainly has the prominent problems of localized monitoring range, delayed early warning capability, fragmented system structure, island response treatment and the like. Therefore, it is needed to design a nuclear power plant cold source safety monitoring and early warning system capable of realizing wide area coverage, early warning, accurate tracking, intelligent research and judgment and quick linkage, and construct a three-dimensional safety barrier from open sea to a water intake, which has a strict structure and quick response, from passive response to steering active defense. The present invention has been made in view of this need. Disclosure of Invention In view of the above, the present invention provides a system for monitoring and early warning cold source safety of a nuclear power plant and a method for implementing the same, which aims to solve the above technical problems. In order to achieve the above purpose, the present invention adopts the following technical scheme: A nuclear power plant cold source safety monitoring and early warning system sequentially forms an entrance door zone, an offshore monitoring zone and an open sea early warning zone from a water intake to the outside; A sensor array is integrated on the dirt blocking net of the gate area; A plurality of offshore monitoring floating bodies are arranged in the offshore monitoring area, the offshore monitoring floating bodies are arranged in