Measuring and testing – Probe or probe mounting
Patent
1987-08-14
1989-05-30
Myracle, Jerry W.
Measuring and testing
Probe or probe mounting
G01N 300
Patent
active
048339318
ABSTRACT:
A thermally self-adjusting mount for a proximity sensor for detecting movement of a turbine blade tip within a turbine housing includes an elongated chamber in an interior wall of the turbine housing adjacent the path of travel of the turbine blade tip. The chamber is configured to receive a blade tip sensor therein and accommodate relative movement of the sensor toward and away from the path of travel of the blade tip. A thermally expansive element is operable coupled with the sensor for moving the latter in the chamber toward the path of travel of the blade tip upon heating of the sensor. A spring is provided for maintaining the sensor in contact with the thermally expansive element during both expansion and contraction of the latter. The thermally expansive member is capable, upon being heated to any given temperature, of causing movement of the sensor in the chamber and relatively toward the path of travel of the blade tip a distance which is substantially the same as the linear movement of the wall away from the path of travel due to having been heated to the same temperature. Thus, the spatial relationship between the sensor and the path of travel of the blade tip remains the same at different temperatures.
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Abeles D. C.
Arana Louis M.
Myracle Jerry W.
Westinghouse Electric Corp.
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