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1. 发明授权

US5295388A Apparatus and method for inpact testing for electric generator stator wedge tightness 失效
标题翻译：发电机定子楔形紧密度的不准确测试装置和方法
公开(公告)号：US5295388A
公开(公告)日：1994-03-22
申请号：US828099
申请日：1992-01-30
申请人： Mark W. Fischer , James W. Alford , George F. Dailey , John E. Noll, Jr.
发明人： Mark W. Fischer , James W. Alford , George F. Dailey , John E. Noll, Jr.
IPC分类号： G01M7/08 , G01M7/00
CPC分类号： G01M7/08
摘要： Method and apparatus for performing remote impact testing for generator stator wedges and ripple springs. An improved low profile carriage is utilized for correlating wedge displacement data with the force required to displace the wedge. A calibrated test stand, in which exemplary wedges are placed under a known loading via a hydraulic load cell, provides means for generating calibration curve sets. From the graphed forcedisplacement curves generated from wedges placed under a known loading, force and displacement data generated during actual stator testing can be analyzed to measure the tightness or looseness of stator wedges, coils and ripple springs. In the preferred embodiment of the low profile carriage of the present invention, a capacitive sensor is used to directly measure the displacement or vibration of stator wedges as a result of being struck by an impact hammer with a known force.
摘要翻译：用于对发电机定子楔和波纹弹簧进行远程冲击试验的方法和装置。使用改进的低轮廓滑架将楔形位移数据与移位楔所需的力相关联。校准的测试台，其中示例性楔形物通过液压测力传感器放置在已知负载下，提供用于产生校准曲线组的装置。从在已知负载下放置的楔形产生的图形强制位移曲线中，可以分析在实际定子测试期间产生的力和位移数据，以测量定子楔，线圈和波纹弹簧的紧密度或松动度。在本发明的低剖面滑架的优选实施例中，电容式传感器用于直接测量定子楔的位移或振动，这是由于以已知的力被冲击锤击打的结果。

2. 发明授权

US5133220A Rotor bore inspection system 失效
标题翻译：转子检测系统
公开(公告)号：US5133220A
公开(公告)日：1992-07-28
申请号：US385865
申请日：1989-07-26
申请人： James W. Alford , Mark W. Fischer , Patricia A. Bosco , Alan A. Marfin , Vincent Berryman, Jr. , Paul Guenther , William B. Lutz , Wilbert B. Rethage
发明人： James W. Alford , Mark W. Fischer , Patricia A. Bosco , Alan A. Marfin , Vincent Berryman, Jr. , Paul Guenther , William B. Lutz , Wilbert B. Rethage
IPC分类号： G01N29/04 , F01D21/00 , G01N27/90 , G01N29/00 , G01N29/22 , G01N29/26 , G01N29/265
CPC分类号： G01N29/265 , F01D21/003 , G01N27/902 , G01N29/223 , G01N2291/044 , G01N2291/2693 , G01N2291/2696
摘要： Apparatus for examining an elongated cylindrical body having an axial bore, such a rotor shaft, which apparatus includes an energy transducer which is supported by a drive rod to be advanced within the bore while obtaining readings indicative of the physical condition of the body, a drive unit supporting the rod, and a fixture for supporting the drive unit in order to center the drive rod within the bore, the fixture being supported by the body and including a mechanism for adjusting the fixture in order to establish the desired axial alignment of the drive rod. The fixture is provided with an arrangement for supporting a calibration block which is used for calibration of the apparatus, the arrangement being adjustable relative to the fixture to bring the calibration block into a desired position relative to the transducer when the drive unit is mounted on the fixture. The drive unit is rotated and advanced axially by DC permanent magnet motors and at least the motor which effects rotation of the drive rod is controlled by position and velocity error signals derived with the aid of a pulse encoder connected to rotate with the motor. A starting angular reference position of the body is determined with the aid of a further fixture which provides a flat reference surface having a defined orientation relative to a reference point on the body.

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