METHOD FOR MEASURING THE DEFLECTION OF AN EXTENDED VERTICALLY DIRECTED CHANNEL Russian patent published in 2022 - IPC G21C17/17 

FIELD: deflection measuring.

SUBSTANCE: invention relates to a method for measuring the deflection of extended vertically directed channels. The method includes placing at least one fiber optic sensor inside the channel fixed at the end of a flexible hollow carrier rod, supplying a light signal via fiber optic lines connected to the sensor, recording reflected light signals using a photodetector connected to the fiber optic lines. Then the channel deflection is determined based on the analysis of the parameters of the light signal using a computer connected to the photodetector. Moreover, the fiber-optic sensor is provided with a gravitational pendulum, the shift of the interference pattern of the reflected light signal in the gas gap between the upper end surface of the gravitational pendulum and the lower end surface of the fiber-optic lines connected to the photodetector and fixed on the sensor is fixed, which changes when the fiber-optic sensor is moved due to deviations of the gravitational pendulum from the axis of the curved channel. Based on the recorded shifts of the interference pattern, profilograms of changes in the gas gap are recorded for each fiber-optic line, on the basis of which the magnitude and direction of the channel deflection from the vertical axis are calculated.

EFFECT: simplification of measurements of the deflection of a vertically directed channel while maintaining measurement accuracy.

1 cl, 4 dwg