Dynamic rotary kiln supporting roller shaft deflection variation and cylinder bending measuring method and instrument

Abstract

The invention relates to a dynamic rotary kiln supporting roller shaft deflection variation and cylinder bending azimuth measuring method and instrument. The method comprises the following steps: determining a cylinder rotation period and a measurement bus by a position sensor; mounting two orthogonal displacement sensors to carry out measurement, and processing the two set of data to obtain the supporting roller shaft deflection variation value, wherein the two displacement sensors are mounted on the same middle section of the left and right supporting rollers of the same shift, and aligned with the centers of the supporting rollers; and correlating the cylinder rotation azimuth with the deflection variation value of the left and right supporting roller shafts of the same group, carrying out comparative analysis to obtain a supporting roller loading and stressing condition curve, and determining the cylinder bending azimuth; and sequentially repeating the operation above at the roller belt of each shift, measuring the deflection variation data of the left and right supporting rollers of each shift, and determining the supporting roller adjustment direction and data by referring to the supporting roller space geometric position parameters and dynamic rotary kiln central line measurement results. The measuring apparatus comprises two displacement sensors, a position sensor, a multichannel data acquisition card and a microcomputer. The measurement accuracy of the method for measuring the supporting roller shaft deflection is 0.001mm; and the measurement accuracy for measuring the cylinder bending is 0.5mm.

Description

technical field [0001] The invention relates to a method for measuring the mechanical deformation of a rotary kiln supporting wheel shaft and a cylinder body, in particular to a method and an instrument for measuring the deflection variation of a dynamic rotary kiln supporting wheel shaft and the cylinder body bending. Background technique [0002] Rotary kiln is an important firing equipment for industries such as cement, non-ferrous and ferrous metallurgy, chemical industry, and refractory materials. The rotary kiln is generally operated continuously by multi-point support of three-speed (and above) supporting wheels. The ideal axis of the rotary kiln is a straight line, and the supporting wheels support the kiln body evenly. In the long-term operation, due to the uneven settlement of the kiln base pier, the deviation of the position of the supporting roller, and the bending and deformation of the kiln shell at the supporting roller, the force on each supporting roller ...

AI Technical Summary

Problems solved by technology

However, due to the shape factors of the uneven contour and out-of-roundness on the surface of the supporting roller, they cause the deflection value of the supporting roller to be 1-4mm, and the deflection of the supporting roller shaft is only 0.1-0.3mm, which is easy to hide and submerge in the uneven contour being deformed

Therefore, the disadvantage of this method is that it is difficult to distinguish the small value of the real shaft deflection change from the large value of the deflection caused by factors such as uneven contours on the surface of the supporting wheel and vibration with only one displacement sensor, resulting in a large measurement error of the deflection change

Images