Hydraulic penstock multi-directional portable vibration displacement measurement method for hydraulic power plant

摘要

(57) [Abstract] (with correction) [Problem] To detect three-dimensional vibration displacement by detecting microvibrations with a plurality of waterproof strain gauge type vibration displacement transducers, electrically amplifying them, and recording them in a recorder in multiple directions simultaneously. The purpose was to enable measurement, to use remote measurement and to be all-weather, to improve the accuracy of measurement and inspection and to save labor. A tripod (8) or frame fixed to the ground surface is provided at an arbitrary position in the center of a support of a penstock (5) of a hydraulic power generation facility at an intersection with a horizontal and vertical pipe surface of a cross section perpendicular to the penstock. A series of measurements in which the gauge type vibration displacement transducer 7 is fixed, and the vibration displacement electric signal from this is connected to a multi-channel vibration recorder 11 through a strain amplifier 10 having a built-in bridge circuit with a lead wire 9 of an appropriate length. System.