公开(公告)号：US4704577A

公开(公告)日：1987-11-03

申请号：US853592

申请日：1986-04-18

申请人： Warren R. Junker ,  Lee W. Burtner

发明人： Warren R. Junker ,  Lee W. Burtner

IPC分类号： G01B7/00 ,  F22B37/00 ,  F22B37/20 ,  G01B7/14 ,  G01N27/90 ,  G21C17/003 ,  G21C17/017 ,  G01N27/72 ,  G21C17/00

CPC分类号： F22B37/206 ,  F22B37/003 ,  G01B7/14 ,  G21C17/017

摘要： A gap measurement probe for measuring the gap between a tub and an antivibration bar in a steam generator includes a shaft and first and second sensors mounted on one end of the shaft. Each of the sensors includes a coil form having a first portion fastened to the shaft and having a second C-shaped portion surrounding a portion of the periphery of the shaft. A test coil is mounted on the second C-shaped portion of each of the coil forms and the test coils are arranged such that they extend about different portions of the circumference of the shaft so as to sense different portions of the circumference of the tube when the gap measurement probe is inserted in the tube. The coil forms are flexible and have a circumference which is sufficiently large to press the test coils against the inside of the tube to provide for accurate sensing. In addition, the shaft is preset with a C shape at the end on which the sensors are mounted, so that when the probe is inserted in a U-shaped tube, the probe is self-orienting in the U bend of the tube.

摘要翻译： 用于测量蒸汽发生器中的浴缸和防振条之间的间隙的间隙测量探​​头包括轴和安装在轴的一端上的第一和第二传感器。 每个传感器包括线圈形式，其具有紧固到轴上的第一部分，并且具有环绕轴的周边部分的第二C形部分。 测试线圈安装在每个线圈形式的第二C形部分上，并且测试线圈被布置成使得它们围绕轴的圆周的不同部分延伸，以便感测管的圆周的不同部分，当 间隙测量探​​头插入管中。 线圈形式是柔性的并且具有足够大的周长以将测试线圈压靠在管的内部以提供准确的感测。 另外，在安装传感器的端部将轴预设为C形，使得当探针插入U形管中时，探针在管的U形弯曲部中自取向。