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Containment structure damage monitoring device based on vibration

A monitoring device and a technology for structural damage, applied in nuclear reactor monitoring, reactors, nuclear power generation, etc., can solve problems such as incomplete reflection of damage and difficulty in manual detection

Inactive Publication Date: 2018-05-18
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For structures such as steel containment vessels, first of all, manual inspection is relatively difficult, and even if the strain gauges are preset, it cannot fully reflect all damage conditions of the structure during service

Method used

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  • Containment structure damage monitoring device based on vibration
  • Containment structure damage monitoring device based on vibration
  • Containment structure damage monitoring device based on vibration

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Embodiment Construction

[0019] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, a vibration-based containment structure damage monitoring device provided by an embodiment of the present invention is characterized in that it includes:

[0021] Percussion hammers, which are impact-actuated devices, configured to be opened by remote control;

[0022] Charge load amplifier, which is a device that amplifies the signal through the amplifier after the load is converted into a signal by the load sensor;

[0023] Accelerometers, which are electronic devices capable of measuring acceleration forces;

[0024] DEWESOFT signal acquisition instrument, which is a device for collecting signals through the distribution points on the containment shell after being excited by the percussion ha...

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Abstract

The invention provides a containment structure damage monitoring device based on vibration. The device comprises a knocking force hammer, an electric load amplifier, an acceleration sensor and computer LMS analysis software. The device can realize real-time or regular monitoring tasks, and only requires 1 to 2 controllers, and relevant personnel is not required to stand in a radiation workshop. Control personnel can command and control the operation of an exciting bank and a data acquisition device; for collected data, a system automatically performs analytical processing, and positions and evaluates damage through a selected signal processing method.

Description

technical field [0001] The invention relates to a containment damage monitoring method in the field of nuclear power, in particular to a vibration-based method for regular in-service monitoring of containment in nuclear power plants and a detection method under special circumstances. Background technique [0002] The containment / shielding building is the most important structure of a nuclear power plant. Its main function is to withstand internal pressure after a hypothetical design basis accident, contain airborne radioactive releases, and provide protection for the reactor core and coolant system during normal operation. barrier. The containment / shielding building is also the thermal boundary of the reactor, which has the function of discharging the heat generated after the design basis accident into the atmosphere and preventing overpressure. At the same time, the containment / shielding plant protects the internal structure of the containment to prevent damage to the nucl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/003
CPCG21C17/003Y02E30/30
Inventor 于晓梅叶苏疏王波
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD