反应堆控制棒组件超声检测探头的研制

为了检测核电站反应堆控制棒组件，保障核电站在役检查顺利实施、降低检测成本。对反应堆控制棒组件（RCCA）检测用超声探头进行自主研制，本文详细介绍了15MHz-Φ4mm-FP8 mm RCCA超声探头制作流程，通过对压电晶片、声透镜、背衬3方面详细介绍探头制作工艺。通过对超声探头进行性能测试，测试脉冲周期数为1.5周，频带宽度为105%，在高温环境下仍能保持优良性能。对超声探头进行模拟检验测试，缺陷测试结果清晰可见，满足检验需求，可完全实现国产化替代进口产品。  

Development of Ultrasonic Transducer for Rod Cluster Control Assembly

It is necessary to detect the defects of Rod Cluster Control Assembly used in nuclear power plant reactors to ensure the successful implementation in service inspection and reduce the cost of nondestructive testing. The ultrasonic probe for Rod Cluster Control Assembly (RCCA) inspection is developed independently. This paper describes the development process of ultrasonic probe about 15MHz-Φ4mm-H4mm-OD6mm. The development process is described in detail in three aspects: piezoelectric wafer, acoustic les and backing. The performance of the ultrasonic probe was tested. The number of pulse cycles is 1.5 weeks and the frequency band width is 105%. The defect test results are clearly visible, and the sensitivity and signal-to-noise ratio meet the inspection requirements in the simulation and inspection of the ultrasonic probe. It can completely replace the imported products with domestic ones.