针对反应堆压力容器在超声检测时超声探头的标定，设计了一种新型扫查装置。该扫查装置主要实现对超声探头的稳定夹持以及平稳带动，同时可以精确地确定探头在标定试块上的移动位置，调节并测出探头对试块表面的压力。着重分析了扫查装置的结构、工作原理和设计要点，最后采用设计的扫查装置对压力容器进行了试验，取得了良好的检测效果。

A new type of scanning device is designed for the critical preparation of ultrasonic testing of reactor pressure vessels, the calibration of ultrasonic probes. It mainly realizes stable clamping and smooth driving of the ultrasonic probe, and can accurately determine the moving position of the probe on the calibration test block, adjust the pressure of the probe on the surface of the test block and measure the pressure value. The device can be applied to different types of calibration test blocks to serve ultrasonic testing of pressure vessels. This paper focuses on the analysis of the structure, working principle and design points of the scanning device;the test was carried out with the designed scanning device, and good detection results were obtained.