Deformation measurement device and method for fuel assemblies

• Main Authors: YANG CHONGAN, XU YUANHUAN, ZHANG JIANJUN, GE LIANG, YIN PENG
• Format: Patent
• Language: English
• Published: 01.07.2015
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS; TESTING

The invention belongs to the field of shape deformation analyzing and ultrasonic ranging of fuel assemblies in a nuclear power plant, in particular to a deformation measurement device and a deformation measurement system for fuel assemblies. The device comprises a fuel assembly, an upper supporting fixing clamp plate, an extending supporting frame, a probe tray carriage, spent fuel pool gate channels and a plurality of probes; the upper supporting fixing clamp plate and the extending supporting frame integrally form a perpendicular supporting frame, the upper supporting fixing clamp plate is fixed on the upper part of one spent fuel pool gate channel, the extending supporting frame is fixed on the inner side of the spent fuel pool gate channel, the probe tray carriage is arranged on the extending supporting frame and can slide vertically along the extending supporting frame, the plurality of probes are fixed on the probe tray carriage, and the fuel assembly is located between the two spend fuel pool gate channels. According to the deformation measurement device, in a high-radiation environment, the self deformation of the fuel assembly can be measured in a mode of noncontact with the assembly by adopting an ultrasonic method.