DEVICE FOR MEASURING THE DEFLECTION OF AN EXTENDED, VERTICALLY DIRECTED CHANNEL Russian patent published in 2022 - IPC G01B11/16 G01B11/24 

FIELD: measuring technique.

SUBSTANCE: invention relates to measuring technique, namely to equipment for measuring the deflection of long, vertically directed channels, including technological channels of a nuclear reactor of the high-power pressure-tube reactor (HPTR). The device contains a flexible hollow bearing rod, equipped with at least one fiber-optic sensor, equipped with a core, closed by a sealed tubular casing. The upper part of the core is made in the form of a mounting sleeve with a central cylindrical cavity. The lower part of the core is made in the form of a central cylindrical rod. Longitudinal sector cuts are made on the central rod of the core, in which ferrules with longitudinal through channels are fixed, and a gravitational pendulum is placed under the lower end of the central rod of the core. Through the through channels of the ferrules, fiber-optic lines are drawn, connecting each fiber-optic sensor with a tunable laser and a photodetector connected to a computer. The cavity of the sealed tubular casing of the fiber optic sensor is filled with an inert gas.

EFFECT: simplifying the manufacture of the device while maintaining the accuracy of measuring the deflection of the channel, including the technological channel of a nuclear reactor.

4 cl, 4 dwg