Shoe roll system and method for monitoring the tightness of a shoe roll

摘要

Shoe roll system for dewatering or smoothing a running fibrous web, in particular paper or board web within a machine for producing and / or finishing the fibrous web, comprising at least one shoe roll with a rotating press cover, and a pressure-measuring device (13) for determining the internal gas pressure in the shoe roll , and a supply line from a gas supply to a gas inlet into the shoe roll, wherein the supply line comprises a control device for adjusting the gas flow rate into the shoe roll characterized in that the shoe rolling system has a monitoring device which is adapted to hold the gas pressure by adjusting the gas flow rate by means of the control device at a predetermined target pressure and to send a signal, in particular to shut down the shoe roll system as soon as the gas flow rate exceeds a predetermined allowable value range. Method for monitoring the tightness of a shoe roll.