公开(公告)号：US5118463A

公开(公告)日：1992-06-02

申请号：US472234

申请日：1990-01-30

申请人： Michel Bordy ,  Pascal Descot ,  Pierre Amiet

发明人： Michel Bordy ,  Pascal Descot ,  Pierre Amiet

IPC分类号： G21C17/07

CPC分类号： G21C17/07

摘要： The assembly (1) is immersed in the water of a pool and placed in vertical position. Detection of the rods (6) of the assembly exhibiting cracks giving rise to leakage is ensured by transmission of ultrasonic waves along the length of each of the rods (6) and by measuring the attenuation of the ultrasonic waves due to the presence of water inside the rods (6) whose cladding is cracked. The ultrasonic waves are picked up after propagation on the cladding of the rods (6) of the assembly along their length, below the lower end fitting (5) in place on the assembly (1). The detecting device comprises an ultrasonic transducer (11) capable of transmitting ultrasonic waves along the length of the rod from its upper part, and a receiver probe (16) for the ultrasonic waves, placed under the lower end fitting (5).

摘要翻译： 将组件（1）浸入池的水中并放置在垂直位置。 通过沿着每个杆（6）的长度传播超声波，并且通过测量由于内部存在水而引起的超声波的衰减，来确保出现产生泄漏的裂纹的组件的杆（6）的检测 其包层破裂的杆（6）。 在组件的杆（6）的包层上沿着它们的长度，在下端配件（5）下方的组件（1）上的适当位置传播超声波。 检测装置包括能够从其上部沿杆的长度传输超声波的超声波换能器（11），以及放置在下端配件（5）下方的用于超声波的接收器探头（16）。

公开(公告)号：US5852642A

公开(公告)日：1998-12-22

申请号：US882729

申请日：1997-06-26

申请人： Pascal Descot ,  Bruno Fichet

发明人： Pascal Descot ,  Bruno Fichet

IPC分类号： G01B7/34 ,  G21C17/06 ,  G21C17/00

CPC分类号： G21C17/06 ,  G01B7/345 ,  G21Y2002/204

摘要： The apparatus is for internal inspection of a guide tube of a nuclear fuel assembly and measurement of deformations of a zone of smaller diameter in a terminal portion of the tube. The apparatus has a stick whose distal portion presents, in succession, starting from a distal end of the stick-shaped means, a guiding swelling having an easy fit in the zone of smaller diameter and two projections. The first projection carries two sets of diametrically opposite strain sensors provided with conductors linking them to a proximal end of the stick. A sleeve slides in a running portion of the guide tube above the zone of smaller diameter and slides over the stick. The sleeve and said stick-shaped means have mutually cooperating abutments for limiting displacement of the sleeve towards the distal portion to a position where the sleeve surrounds the stick.

摘要翻译： 该装置用于内部检查核燃料组件的导管和在管的端部中测量较小直径的区域的变形。 该装置具有一个棒，其远端部分从棒状装置的远端开始，具有易于装配在较小直径区域和两个突出部分中的引导凸起。 第一个突起带有两组直径相对的应变传感器，它们设有将它们连接到杆的近端的导体。 套管在引导管的运行部分中在较小直径的区域上方滑动，并在棒上滑动。 套筒和所述棒状装置具有相互配合的支座，用于限制套筒朝向远端部分的位移到套筒围绕杆的位置。