An overall performance evaluation method of nuclear power plant containment based on distributed sensing technology

A technology of sensing technology and evaluation method, which is applied in the field of overall performance evaluation of nuclear power plant containment based on distributed sensing technology, which can solve the failure of embedded vibrating wire sensors, the inability to achieve repair and replacement, and the inability to repair or replace the severity. And other issues

CN109357785BActive Publication Date: 2020-09-04SUZHOU NUCLEAR POWER RES INST +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-09-04

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Abstract

The invention relates to the fields of safety monitoring of major civil and structural engineering and nuclear safety, in particular to a method for evaluating the overall performance of a containment vessel of a nuclear power plant based on distributed sensing technology, comprising the following steps: laying sensing optical fibers on the containment vessel; The actual strain value and radial displacement value; obtain the theoretical strain value and radial displacement value of the cylinder; evaluate the performance of the containment to determine whether the containment meets the overall strength requirements. This patent evaluates the containment based on distributed sensing technology The overall performance method can realize the overall performance evaluation even if the embedded vibrating wire sensor of the containment concrete structure fails, and has innovative points such as multi-area laying, long distance, rich data, and can eliminate accidental errors in local positions. And advantages, it can meet the needs of existing pre-embedded strain monitoring sensors to supplement and upgrade before failure, and provide guarantee for the long-life operation of nuclear power plants.
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Description

technical field

[0001] The invention relates to the fields of safety monitoring of major civil and structural engineering and nuclear safety, in particular to a method for evaluating the overall performance of containment shells of nuclear power plants based on distributed sensing technology. Background technique

[0002] Optical fiber sensing technology has many advantages, such as small size, anti-electromagnetic interference, no drift, good durability, and long transmission distance. Among them, distributed sensors are based on the principle of Brillouin scattering, which can perform real-time monitoring of large-scale, long-distance, and distributed strains. It has been gradually applied in the field of structural health monitoring, and it is a good sensor with potential application in long-term health monitoring of civil engineering structures. At present, it has been widely used in tunnels, bridges, pipelines and other structures.

[0003] The integrity evaluation of ...

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Embodiment Construction

[0114] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0115] See attached figure 1 to attach figure 2 The containment vessel includes a prestressed concrete cylindrical shell 1, an arc-shaped dome 2 located above the shell 1, and a thick reinforced concrete foundation plate at the bottom of the shell 1, and the inner surface of the shell 1 is provided with a steel lining. The vertical prestressed steel beams of cylinder 1 start from the top of the prestressed corridor to the junction of the vertical wall and dome 2; the horizontal prestressed steel beams of cylinder 1 run from the bottom to the top of cylinder 1, and two layers of prestressed Stressed steel tendons; the dome 2 prestressed steel tendons are divided into 3 layers, adopting the form of 120° intersecting each other and the angle between the axes of each layer is 60°, and the steel bundles are covered with steel bundle sleeves.

[0116] A me...