公开(公告)号：US4851773A

公开(公告)日：1989-07-25

申请号：US881095

申请日：1986-07-02

Applicant: Samuel Rothstein

Inventor： Samuel Rothstein

IPC: G01B7/28

CPC classification number: G01B7/281

Abstract: An electro-mechanical eddy current probe having a rotatable sensing head for sensing the wall thickness of and locating local defects in a tube or conduit through which it is passed. The rotatable head includes a radially movable, outward projecting sensing member which is spring-biased into engagement with the interior surface of the tube and which carries an eddy current coil or which actuates either the core of a differential transformer, a strain gauge or a rheostat, each electrically monitored by the probe. The cylindrical probe is centered within the tube by a pair of centering guides at either of its ends. The probe also carries a fixed eddy current coil on its non-rotating body portion for detecting and anticipating locations of particular interest within the tube where the longitudinal movement of the probe should be slowed, such as locations of exterior tube support plates where denting is more apt to occur.

Abstract translation: 一种机电涡流探针，其具有可旋转的感测头，用于感测通过其的管或导管中的壁厚度和定位局部缺陷。 可旋转头包括可径向移动的向外突出的感测构件，其被弹簧偏置成与管的内表面接合，并且其携带涡流线圈或者驱动差动变压器的芯，应变计或变阻器 ，每个由探头电监测。 圆柱形探针通过一对中心导向器在其任一端处于管内居中。 探头还在其非旋转体部分上带有固定的涡流线圈，用于检测和预测管内特别感兴趣的位置，其中探针的纵向运动应当减慢，例如外管支撑板的位置，其中凹陷更多 容易发生

公开(公告)号：US4625165A

公开(公告)日：1986-11-25

申请号：US558955

申请日：1983-12-07

Applicant: Samuel Rothstein

Inventor： Samuel Rothstein

IPC: G01B7/28 ,  G01N27/90 ,  G01R33/12

CPC classification number: G01B7/281

Abstract: An electro-mechanical eddy current probe having a rotatable sensing head for sensing the wall thickness of and locating local defects in a tube or conduit through which it is passed. The rotatable head includes a radially movable, outward projecting sensing member which is spring-biased into engagement with the interior surface of the tube and which carries an eddy current coil electrically monitored by the probe. The cylindrical probe is centered within the tube by a pair of centering guides at either of its ends. The probe also carries a fixed eddy current coil on its non-rotating body portion for detecting and anticipating locations of particular interest within the tube where the longitudinal movement of the probe should be slowed, such as locations of exterior tube support plates where denting is more apt to occur.

Abstract translation: 一种机电涡流探针，其具有可旋转的感测头，用于感测通过其的管或导管中的壁厚度和定位局部缺陷。 旋转头包括径向可移动的向外突出的感测构件，其被弹簧偏置成与管的内表面接合并且承载由探针电监测的涡流线圈。 圆柱形探针通过一对中心导向器在其任一端处于管内居中。 探头还在其非旋转体部分上携带固定的涡流线圈，用于检测和预测管内特别感兴趣的位置，其中探针的纵向运动应当减慢，例如外管支撑板的位置，其中凹陷更多 容易发生

公开(公告)号：US4646816A

公开(公告)日：1987-03-03

申请号：US875234

申请日：1986-06-13

Applicant: Samuel Rothstein

Inventor： Samuel Rothstein

IPC: F16L55/13 ,  F28F11/02 ,  F16L55/12 ,  B23P19/02

CPC classification number: F16L55/13 ,  F28F11/02 ,  Y10T29/49352

Abstract: Tube plugs in several embodiments are provided for plugging and sealing off a defective tube in a heat exchanger to effect a seal at a location within the tube, spaced away from the tube end. The tube plug includes a deformable cylindrical sleeve member which is placed into the tube end, and has a peripheral shoulder thereon which abuts against the tube end to position an interior tapered portion of the sleeve, adjacent to its other open end, at the desired location of the seal to be formed within the tube, and a hard plug member, having a comating tapered portion, which is either hammered into the sleeve or tightened and pulled outwardly depending upon the direction of the engaging tapered surfaces, to deform the sleeve and form the tube seal in the zone of the tapered surfaces.

Abstract translation: 提供了几个实施例中的管塞用于堵塞和密封热交换器中的有缺陷的管，以在管中的与管端间隔开的位置处实现密封。 管塞包括可变形的圆柱形套筒构件，该可变形圆柱形套筒构件放置在管端中，并且在其上具有与其端部抵接的周边肩部，以将套筒的内部锥形部分邻近其另一开口端定位在期望位置 要形成在管内的密封件，以及硬塞构件，其具有倾斜锥形部分，该锥形部分被敲入套筒中或者根据接合锥形表面的方向被拧紧并向外拉动，以使套筒变形并形成 管密封在锥形表面的区域。