熔炉出料管续接装置研制

Development of Docking Device for Discharge Pipe of Vitrification Melter

焦耳加热陶瓷熔炉是高放射性废液玻璃固化工艺的核心设备,炉内玻璃固化体通过底部出料方式浇注到产品容器内。为修复熔炉出料管,对受损后的出料管进行了检查,研制了专用出料管上段处理装置对出料管上段进行切割、打磨及清理,设计了便于安装、固定及拆卸的续接装置。通过试验方法对设计的多种密封结构进行了测试,选择了最优的密封方案;通过试验对续接装置的整体结构和热补偿功能进行了可靠性验证。通过续接装置的安装和实际使用表明,装置结构简单、安装方便、密封可靠,成功恢复了熔炉出料管功能,顺利完成了熔炉内高放射性玻璃固化体的置换工作,为保证熔炉良好状态和出料管焊接修复创造了有利条件,为放射性高温环境下的同类工作积累了经验。

Joule heated ceramic melter is the core equipment in the high level liquid waste vitrification process,and the vitrified waste in the melter is poured into the canister by means of bottom discharge.In order to repair the melter discharge pipe,the damaged discharge pipe was inspected,a special device was developed to cut,grind and clean the upper section of the discharge pipe,and a docking device was designed for easy installation,fixing and disassembly.Various sealing structures designed were tested by experimental methods,and the optimal sealing scheme was selected.Through the test,the reliability of the overall structure and thermal compensation function of the docking device was verified.The installation and use of the docking device show that it is simple in structure,convenient to install and reliable in sealing.The function of the discharge pipe is successfully restored,and the replacement of high-level vitrified waste in the melter is successfully completed,which creates favorable conditions for ensuring the good state of the melter and welding repair of the discharge pipe,and accumulates experience for similar work in radioactive high-temperature environment.