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Hydraulic machine shutdown sensor assembly

  • US 4,144,421 A
  • Filed: 12/17/1976
  • Issued: 03/13/1979
  • Est. Priority Date: 12/19/1975
  • Status: Expired due to Term
First Claim
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1. A system for shutting down a hydraulic machine having a runner mounted on a rotating shaft, at least one stationary part surrounding the runner, and a sensor assembly, comprising:

  • at least one sensing rod of said sensor assembly slidably supported in the direction of its longitudinal axis in said stationary part opposite to the periphery of said runner, said sensing rod being biased toward the runner by resilient means and being slidably movable under pressure of said runner, in case of any deformation or off-center displacement of said runner, so as to sense the gap between said runner and the associated stationary part,at least one member of said sensor assembly mounted in said stationary part opposite to the periphery of said runner and forming part of a fluid pressure circuitry which member is actuated when the stroke of the associated sensing rod has exceeded a predetermined value, anda shutdown device operable through said fluid pressure circuitry upon actuation of said member.

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