Batch-type scrubbing-ball replacement system for heat exchanger

US4556102A · kind A · utility

Assignee

• Taprogge Gesellschaft mbH · DE

Inventors

• Rolf Bochinski · Duisburg, DE
• Klaus Eimer · Ratingen, DE
• Alois Lange · Ratingen, DE
• Xuan Luong Nghiem · Krefeld, DE

Key dates

• Filing date: Mar 16, 1984
• Grant date: Dec 3, 1985
• Expiry date: Mar 16, 2004

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28G1/12
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A tube-type heat exchanger having inlet and output conduits and tubes connected therebetween, and a return conduit extending from the output to the inlet conduit is, as is known, traversed by a coolant liquid from the intake to the output conduit through the tubes. Balls are released into the intake conduit from the return conduit and pass with the coolant through the tubes to clean same. These balls are trapped in the output conduit and introduced back into the return conduit where each ball's momentum is measured and outputs corresponding thereto are generated. These outputs are compared with a set-point signal corresponding to minimum acceptable ball momentum and all of the balls from the conduits are withdrawn and replaced with fresh balls when in a predetermined period of time a predetermined number of the outputs fall below the set-point signal.