论文部分内容阅读
微波治疗机主要用于各种肿瘤病人的治疗。它利用由微波产生的42℃左右温度,对准病变部位杀灭癌细胞,使癌肿坏死,变小或消失,提高病人的生存质量,延长生存期。由于热能是由磁控管发出经屏蔽线传输到辐射头(辐射器)上的,而辐射头又是根据患者需要经常移动。所以,屏蔽线发生的故障率相对较高。现将机器工作中常见故障维修实例介绍如下: 故障现象一:PWH—A微波治疗机,治疗突然中断,温度骤降,功率显示正常。
Microwave therapy machine is mainly used for the treatment of various cancer patients. It makes use of the temperature around 42 ℃ produced by microwave to kill the cancer cells at the lesion site so as to make the cancer necrosis, become smaller or disappear, improve the quality of life of patients and prolong the survival period. Since the thermal energy is transmitted by the magnetron to the radiating head (radiator) via the shielded wire, the radiating head is constantly moved according to the needs of the patient. Therefore, the failure rate of the shield wire is relatively high. Now the machine repair work common fault examples are described below: Failure phenomenon: PWH-A microwave treatment machine, treatment suddenly interrupted, the temperature plunged, the power showed normal.