Descaling system, control device of the descaling system, and method for controlling the descaling system

A control device of a descaling system,

• the descaling system comprising:
• a plurality of descaling headers provided in a rolling line;
• a common pipe connected to each of the plurality of descaling headers;
• a connection pipe connected to the common pipe;
• a pump connected to the connection pipe, the pump supplying high pressure water to each of the plurality of descaling headers via the connection pipe and the common pipe;
• a drive device controlling driving of the pump;
• a branch pipe connected to the connection pipe;
• and
• a valve provided in the branch pipe, the valve controlling an opening/closing of the branch pipe,
• the control device of the descaling system comprising:
• a data collector collecting common pipe pressure information, rolling material position information, and rolling material property information, the common pipe pressure information indicating a pressure inside the common pipe, the rolling material position information indicating a position on the rolling line of a rolling material, the rolling material property information indicating a material property of the rolling material;
• a pressure calculator calculating the pressure inside the common pipe to satisfy a desired scale removal performance for the rolling material, the calculating being based on the common pipe pressure information, the rolling material position information, and the rolling material property information;
• a pump controller calculating an operation pattern of the pump to maintain the calculated pressure inside the common pipe, the pump controller inputting the operation pattern to the drive device;
• and
• a protector calculating an operation amount of the valve based on the operation pattern and controlling an opening/closing of the valve according to the operation amount.

A method for controlling a descaling system,

• the descaling system comprising:
• a plurality of descaling headers provided in a rolling line;
• a common pipe connected to each of the plurality of descaling headers;
• a connection pipe connected to the common pipe;
• a pump connected to the connection pipe, the pump supplying high pressure water to each of the plurality of descaling headers via the connection pipe and the common pipe;
• a drive device controlling driving of the pump;
• a branch pipe connected to the connection pipe;
• and
• a valve provided in the branch pipe, the valve controlling an opening/closing of the branch pipe,
• the method for controlling the descaling system comprising:
• collecting common pipe pressure information, rolling material position information, and rolling material property information, the common pipe pressure information indicating a pressure inside the common pipe, the rolling material position information indicating a position on the rolling line of a rolling material, the rolling material property information indicating a material property of the rolling material;
• calculating the pressure inside the common pipe to satisfy a desired scale removal performance for the rolling material, the calculating being based on the common pipe pressure information, the rolling material position information, and the rolling material property information;
• calculating an operation pattern of the pump to maintain the calculated pressure inside the common pipe, and inputting the operation pattern to the drive device;
• and
• calculating an operation amount of the valve based on the operation pattern and controlling an opening/closing of the valve according to the operation amount.