Automatic monitoring and measuring system and method for high-temperature heat treatment of nuclear island equipment

Abstract

The invention discloses an automatic monitoring and measuring system and method for high-temperature heat treatment of nuclear island equipment, and the system comprises a detection system located in a cylinder, and the detection system comprises a plurality of temperature measurement points which are distributed on an annular welding seam at intervals, an optical fiber thermodetector, and a plurality of fluorescent temperature measuring light rays; the first end of each fluorescent temperature measuring light ray is connected with the optical fiber thermodetector, and the second end of each fluorescent temperature measuring light ray is connected with the corresponding temperature measurement point; the optical fiber thermodetector is connected with a remote terminal and used for converting temperature signals measured by all the fluorescent temperature measuring light rays into electric signals and then transmitting the electric signals to the remote terminal, and the remote terminal is used for converting the received electric signals into temperature information and displaying the temperature information in real time. The system can conveniently, efficiently and accurately monitor and measure the temperature change of the circular seam heat treatment of the cylinder in real time for a long time in real time.

Description

technical field [0001] The invention relates to the technical field of intelligent diagnosis of nuclear island equipment, in particular to an automatic monitoring and measuring system and method for high-temperature heat treatment of nuclear island equipment. Background technique [0002] Welding is one of the main measures for the butt joint of the cylindrical shell of the nuclear island equipment. The shell needs to be heat treated before and after welding. The preheating means that the base metal reaches the specified minimum preheating temperature before the welding or cutting operation, and the postheating is The completed or partially completed welds are kept at a high temperature below 425°C, the purpose is to diffuse hydrogen from the welds, and the functions of preheating and postheating are mainly to dehydrogenate, reduce stress, and improve metallographic structure; The main energy source for the heat treatment of the circular seam is natural gas, and the flame di...

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Problems solved by technology

[0003] Since the entire cylinder rotates axially at a uniform speed through the welding bracket (roller frame) during the heat treatment of the circular seam of the cylinder, the traditional temperature measurement method is to manually measure the temperature through the surface thermometer during the heat treatment, and adjust it according to the measured temperature. Due to the measurement process Real-time monitoring is not possible, and repeated measurements at regular intervals take up a lot of time, and some measurements require high-elevation operations and night-time measurements due to work position restrictions, which increase potential safety hazards

Secondly, due to the inconsistent measurement personnel and equipment, and the repeated use of measurement equipment for a long time, the measurement accuracy is greatly affected

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