Nuclear reactor horizontal displacement monitoring method and detection system

Abstract

The invention discloses a nuclear reactor horizontal displacement monitoring method and detection system. The method comprises the following steps of: fixedly installing a plumb line coordinatograph at a preset position and starting the plumb line coordinatograph; awakening an imaging module, and acquiring vertical images in a plurality of predefined directions; and in each predefined direction, determining a vertical line contour center line in the direction, selecting any point on the vertical line contour center line as a base point, calculating coordinate information of an initial moment, and after a preset time, repeating the steps to obtain coordinate information of a final moment, and processing the coordinate information of the final moment and the coordinate information of the initial moment, and determining horizontal displacement information of a nuclear reactor shell in each direction. According to the nuclear reactor horizontal displacement monitoring method and detection system, the plumb line coordinatograph and the image recognition technology are adopted, so that the real-time measurement of the horizontal displacement is realized, the automation degree is high, and the precision of a measurement result is high.

Description

technical field [0001] The invention relates to the safety field of nuclear power plants, in particular to a method and a detection system for monitoring the horizontal displacement of a nuclear reactor. Background technique [0002] At present, for the monitoring of horizontal displacement of large structures such as dams, bridges, high-rise buildings, and containment shells of nuclear power plants, the plumb line horizontal displacement measurement system is generally used for monitoring, and the vertical line coordinate instrument is the plumb line horizontal displacement measurement system. The key components of the vertical line coordinate instrument usually include a capacitive vertical line coordinate instrument, a stepping motor type vertical line coordinate instrument, and a CCD type vertical line coordinate instrument. [0003] The vertical line coordinate instrument needs to be used in a high humidity and high temperature environment, and at the same time it needs...

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Problems solved by technology

[0003] The vertical line coordinate instrument needs to be used in a high humidity and high temperature environment, and at the same time it needs to maintain high insulation and high stability. Because the stepper motor type vertical line coordinate instrument contains mechanical moving components, it is difficult to guarantee its stability after long-term outdoor work; Capacitive vertical line coordinate instrument has the phenomenon that the longer the cable is, the lower the sensitivity of the instrument is. A small number of unshielded parts will also cause the problem of increased leakage capacitance, and at the same time reduce the sensitivity of the instrument, and the leakage capacitance is unstable, which affects the stability of the vertical line coordinate instrument. It has a certain impact; the CCD vertical line coordinate instrument is measured on the CCD by vertical line projection, and the light source is separated from the CCD. There will be packaging problems and long-term power-on aging problems of the CCD. Therefore, in order to solve the above problems, a nuclear reactor level is now needed. Displacement monitoring method and detection system

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