PARALIGN® Service Service for the Paper Industry

Service for the Paper Industry PARALIGN® – how does it work From the gyros as a toy to the parallelism measurement system Moving gyros show a so called inertia and their relative position in space can hardly be changed (pct. 1). While the bearing surface is moved, the gyro axis stays constant and the angle of inclination can be displayed (pct. 2). The same effect is used in PARALIGN®: Inside the measurement system there are three highly precise ringlaser gyroscopes. The same technology can be found in the navigation systems of spacecrafts. Inertial Measurement Unit (IMU) Each of the three gyroscopes...

Service for the Paper Industry PARALIGN® in the drying section A paper mill for magazine paper showed the following problem: One of the drying wires had to be changed after four weeks instead of a regular lifetime of twelve months. Because of the housing shown in the picture a traditional measurement system can hardly access the rolls. On the other hand, the temperature gradient in the still hot drying group makes the use of optical systems very difficult. The deflection of light near the hot drying cylinders is different to the deflection at room temperature outside the machine. The key argument...

Service for the Paper Industry The PARALIGN® protocols of the discussed measurement are shown below. The first picture shows the alignment condition as found. The second picture shows the drying group after the corrections. The improvement of roll parallelism can be seen clearly. Before alignment After alignment Roll face length: 7500 mm Your point of view is the operator side of the machine, represented in green. The machine side is represented in red. The blue marked drying cylinder is chosen as reference roll, it is perpendicular to the drawing. For further information please see www.paralign.info...