Roller Vortex Flow Detection Device and Its Calibration Method
The pressure fluctuations of the working gas were analyzed by means of fast Fourier transformation, combined with vortex motion in the roll passes, and a device for online monitoring of vortex flow of rollers on the rolling mill was developed using an ultrasound ultrasonic cavity pressure sensor. The device is composed of an ultrasonic cavity pressure sensor, high sensitivity amplifier and a data collector. The sensor which was used was completely sealed and was placed at the inlet of the upstream flighting in the roller passage, firmly fixed on the side of the stand. The outputs of the sensor and amplifier were connected to the data acquisition through a 9-pin serial connector. The monitored signals were then analyzed using a computer.
The detection device was used to obtain the vortex flow of the rollers on the rolling mill in the form of a time-domain instantaneous pressure spectrum. The spectrum was further analyzed to examine the variation of the pressure corresponding to the rotation of the rollers. By analyzing the pressure fluctuations generated by the variation of the rollers, it was possible to determine the motion of the rollers and the velocity of the rollers. The analysis of the pressure spectra could provide more accurate detection of the vortex flow of the rollers on the rolling mill.
In order to make sure that the device is working properly and appropriately, it is important to perform a calibration process. During the calibration process, the rolling speed of the rolling mills and the rotary speed of the rollers were set, and the effectiveness of the device was tested by comparing the measurement output from the device and the measured results of the rotation speed of the rollers. It is important to ensure that the device is operating properly before it can be effectively used for the detection of the vortex flow of the rollers.
The calibration process for the roller vortex flow detection device includes setting the rotary speed of the rollers, setting the rolling speed of the rolling mills, and obtaining the pressure spectra from the output of the device. Once the pressure spectra have been obtained, the pressure levels at different rotational speeds of the rollers can be compared and analyzed to determine the accuracy of the device. Once the accuracy of the device is confirmed, the device can then be used to measure the velocity of the rollers at different rotational speeds and in different directions.
The roller vortex flow detection device is a useful tool for online monitoring of the rollers on the rolling mill. As it is able to measure the velocity of the rollers at different speeds and in different directions, it can be used to continuously monitor and analyze the vortex flow of the rollers and thereby optimize the performance of the mills. It is important to regularly calibrate the device to ensure that it is working properly and that the results obtained from the device are accurate and reliable.
