Automatic monitoring and warning system for nuclear power plant concrete structure sediment

Abstract

The invention provides an automatic monitoring and warming system for nuclear power plant concrete structure sediment, belonging to the technical field of the nuclear power plant infrastructure construction. The system comprises a plurality of monitor sensing devices and a warning control cabinet. Each monitor sensing device comprises a fixed part and a moving part, wherein the fixed part is a microstroke switch, and the moving part is a sinker bar mounted on the top plate of the gallery. The distance between the end part of the sinker bar and the contact of the microstroke switch is equal to the sediment warning value of the gallery top plate. The contact of the microstroke switch is serially connected with the coil of a corresponding intermediate relay and connected with a power circuit. The normally open contact of the intermediate relay is respectively connected with the electric bell and the corresponding signal lamps in serial and connected in the power circuit. In construction, when the sediment of any monitoring point reaches a set early warning value, the warning control cabinet will automatically displays the audible alarm, and the position of the monitor point which reaches the early warning value is indicated via the signal lamp, so that a construction commander can rapidly understand the monitor condition and start the corresponding handle plan, to ensure the construction safety.

Description

technical field [0001] The invention relates to a monitoring and alarm system for the construction of nuclear power plants, in particular to an automatic monitoring and alarm system for the settlement of concrete structures in nuclear power plants, which is applied to the monitoring of the settlement of the roof of the prestressed corridor during the multi-layer integral pouring of the raft foundation of the nuclear power plant, and belongs to nuclear power plant facilities Build technical fields. Background technique [0002] Due to the needs of my country's national economic development and the great advantages of nuclear power, the "National Nuclear Power Medium and Long-Term Development Plan (2005-2020)" requires that by 2020, my country's nuclear power installed capacity will reach 40 million kilowatts, and 18 million kilowatts are under construction, so that my country's nuclear power The installed capacity of China accounted for about 4% of the country's total installe...

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Problems solved by technology

[0006] Due to the characteristics of the whole pouring process of the raft foundation with a long period, continuous construction day and night, and multiple shifts of the participants, the pressure of the concrete on the roof of the corridor is constantly increasing during the whole pouring process, and the ordinary artificial settlement observation method is difficult to meet the requirements. The requirements of continuous and all-weather monitoring of the settlement of the corridor roof and timely and rapid alarm cannot ensure the safety of the raft foundation pouring

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