G - Physics – 01 – N
Patent
G - Physics
01
N
116/72, 170/79
G01N 3/00 (2006.01) G01B 5/00 (2006.01) G01B 7/14 (2006.01) G01H 1/00 (2006.01)
Patent
CA 1288359
ABSTRACT OF THE DISCLOSURE 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 senor 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.
574213
Bereskin & Parr
Twerdochlib Michael
Westinghouse Electric Corporation
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