医科达Precise直线加速器高压故障维修案例  

High Tension Troubleshooting Cases of Elekta Precise Linear Accelerator

作　　者：王绪刚 于晓君 魏绪国[1] WANG Xugang;YU Xiaojun;WEI Xuguo(Department of Radiotherapy,Liaocheng People’s Hospital,Liaocheng Shandong 252000,China)

机构地区：[1]聊城市人民医院放疗科,山东聊城252000

出　　处：《中国医疗设备》2022年第2期172-175,182,共5页China Medical Devices

摘　　要：本文分析了医科达Precise直线加速器高压充放电电路的工作原理,介绍了充电部分输入级电路高压开关跳闸、充电部分输出级电路滤波电容损坏、放电部分的闸流管阳极接线损坏的故障。通过结合故障现象进行理论分析和实际测量,快速定位故障位置,分别采取更换NTC热敏电阻、电缆、电容C3和对闸流管感应线圈重新焊接的故障处理方法排除故障。本文可为直线加速器的维修提供借鉴,有效保证设备开机率和良好的运行状态。This article analyzed the working principle of the high tension charge and discharge circuit of the Elekta Precise linear accelerator,and introduced the faults that the high tension circuit breaker of the input stage circuit of the charging part was tripped,the filter capacitor of the output stage circuit of the charging part was damaged,and the thyristor anode wiring of the discharging part was damaged.Through theoretical analysis and actual measurement of the fault phenomenon,the fault location was quickly located,and the fault treatment methods of replacing the NTC thermistor,cable,capacitor C3 and re-welding the thyratron induction coil were taken to eliminate the fault.This article can provide a reference for the maintenance of linear accelerators,and effectively ensure the availability and good operating conditions of the equipment.

关 键 词：直线加速器 高压开关 滤波电容 闸流管 高压故障处理 

分 类 号：R197.39[医药卫生—卫生事业管理] TH774[医药卫生—公共卫生与预防医学]