Welding monitoring and measuring system and method for nuclear power evaporator main pump shell

Abstract

The invention discloses a welding monitoring and measuring system for a nuclear power evaporator main pump shell. The system comprises a displacement sensing module arranged on the main pump shell, an inclination angle sensing module, a controller, a monitoring display module, a data analysis module and a welding arcing module. The inclination angle sensing module is arranged on the main pump shell. The first input end of the controller is connected with the output end of the displacement sensing module, and the second input end of the controller is connected with the output end of the inclination angle sensing module. The input end of the monitoring display module is connected with the first output end of the controller. The input end of the data analysis module is connected with the second output end of the controller. The input end of the welding arcing module is connected with the output end of the data analysis module, and the output end of the welding arcing module is connected with the main pump shell. By means of the welding monitoring and measuring system, the problems that traditional welding efficiency is low and welding measuring precision is low are solved, through the automatic welding monitoring and measuring system, the deformation amount in the welding process of the main pump shell is accurately monitored in real time, the change of an arcing point is automatically displayed, the adjustment amount and the welding amount of the welding position are guided, and the welding precision and the welding efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of nuclear power evaporator welding, in particular to a welding monitoring and measuring system and method for a main pump casing of a nuclear power evaporator. Background technique [0002] The pump casing of the main pump is a nuclear first-class equipment, which is used for direct welding with the steam generator (SG); among them, the joints used for the large thick-wall welding of dissimilar rigid joints are dissimilar metal welding joints with a full penetration thickness of 156mm. [0003] The stainless steel on the pump casing side of the main pump and the nickel-based alloy on the pre-stacked side of the SG outlet nozzle have small thermal conductivity and high thermal expansion coefficient, resulting in large deformation of the main pump casing during the welding process and difficult to control, resulting in main The position tolerance of the pump casing is out of tolerance, mainly manifested in: t...

AI Technical Summary

Problems solved by technology

This system and method aims to solve the problems of low traditional welding efficiency and low welding measurement accuracy. Through the automatic welding monitoring and measurement system, it can accurately monitor the deformation of the main pump pump casing in real time, automatically display the change of the arc starting point, and Guide the adjustment of the welding position and the amount of welding to ensure that the deformation of the main pump casing is always controlled within a reasonable range during the long-term welding process, and improve the welding accuracy and welding efficiency

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