Nuclear power plant fork-shaped blade root inspection method

• Main Authors: WANG JIN, LIANG PENGFEI, DU QINGLIANG, XU NING, MA LONG, LIU XIAORUI
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a nuclear power plant fork-shaped blade root inspection method, the fork-shaped blade root comprises a blade body and at least one tooth root, the tooth root comprises a first rivet hole, and the method comprises the following steps: S1, placing a preset probe at a blade body or tooth root platform corresponding to a to-be-inspected first rivet hole area; S2, in the detection process, receiving a reflected signal of the blade root, and displaying the reflected signal in global focusing imaging of the first rivet hole area to be detected by the ultrasonic detector; and S3, judging whether the first rivet hole has defects or not according to the position information of the reflected signal in the global focusing image. The crack defect of the first rivet hole can be effectively found, the defect is easier to recognize in the detection process, and the detection sensitivity and the detection efficiency are higher. 本发明公开了一种核电厂叉型叶根的检查方法，叉型叶根包括叶身和至少一齿根，齿根包括第一铆孔，该方法包括以下步骤S1：将预设探头置于待检的第一铆孔区域对应