Patent ID: 9518894
Filing Date: 2016-12-13
CPC Classification: F01D,G01B,G01H,G01M,G01N

Claim Text:
1. A device for measuring vibration amplitudes of the blade tips in a turbomachine, comprising: a support mounted in an orifice of a casing of a turbomachine and wherein are housed first and second optical guides exiting the casing across from the tips of the blades of a turbine wheel, with the first optical guide being connected to a source of light for the propagation of a light signal to the blade tips and the second optical guide being connected to means for processing and analysing the light signal reflected by the blade tips, wherein each optical guide comprises an optical fiber connected at one end by a mechanical connector to a rigid needle of which a core is made of a material able to transmit a light signal and which is resistant to temperatures equal to 1100° C. and which exits at a distal end thereof inside the casing across from the blade tips.