油浸式变压器内检机器人喷射推进器设计及叶轮修型

Design of Jet Thruster of Oil-Immersed Transformer Internal Inspection Robot and Repair of Impeller

针对油浸式变压器内部复杂环境,依据设计需求和具体作业工况,设计球形结构浮游行进机器人,进一步确定机器人推进器总体方案,选择采用喷射推进方案作为油浸式变压器内检机器人的推进方式。通过仿真分析,结合喷射系统布置方案和离心泵设计原理,确定喷射推进器内部参数,同时喷射推进器内部采用涡状叶轮代替直式叶轮,仿真实验表明叶轮负压区域压力最大值和负压区范围有所减小,提高了喷射推进器抗汽蚀能力,使得机器人运行更加安全可靠。

In view of the complicated internal environment of the oil-immersed transformer,a spherical structure floating robot is designed according to the design requirements and specific operating conditions,to further determine the overall plan of the robot propeller,and choose the jet propulsion scheme as the propulsion method of the oil-immersed transformer internal inspection robot.Through simulation analysis,combined with the jet system layout plan and the design principle of the centrifugal pump,the internal parameters of the jet thruster are determined.At the same time,a vortex impeller instead of a straight impeller inside the jet thruster.The simulation experiment shows that the maximum pressure in the negative pressure area of the impeller and the negative pressure area have been reduced,which improves the anti-cavitation ability of the jet thruster and makes the robot operation safer and more reliable.