水下高压局部干式自动焊接试验装置控制系统

Control system of underwater high-pressure local dry automatic welding testing apparatus

摘要: 研制了一套用于水下高压局部干式自动焊接试验控制系统。此试验系统采用液压作为动力源,可在由排水罩形成的局部干式空间内进行MIG焊接。此系统采用西门子PLC、压力传感器、行程开关、水下摆心传感器等作为其主要的控制部件。由焊接环境控制、液压驱动自动焊机控制和水下摄像三套子系统构成。此系统可以实现在高压有水环境下远程遥控的局部干式自动焊接。结果表明,此焊接试验装置工作稳定,水下焊接焊缝质量良好。这些研究工作为核电厂水下焊接维修奠定基础。

Abstract: A control sy stem of underwater high-pressure local dry automatic welding testing apparatus was developed.The testing apparatus is driven by hydraulic power, and can be applied in MIG process within the local dry cavity of the drainer.The system is mainly made up with Siemens PLC, pressure sensor, travel switch, and underwater swing center sensor.It is divided into three subsystems, the welding environment control subsystem, the control subsystem of automatic welding equipment driven by hydraulic power and the underwater monitor subsystem, which can realize underwater high-pressure local dry automatic remote control welding.Experiment results indicate that the system can work stably, and qualified joint can be obtained.The research work has established the foundation for underwater welding repair of unclear power station.