Remotely operable tool for setting plugs into heat exchanger tubes

US4693277A · kind A · utility

Assignee

• Kraftwerk Union Aktiengesellschaft · DE

Inventors

• Oswald Bieber · Heroldsbach, DE
• Erich Haas · Leinburg, DE
• Rudolf Henglein · Pinzberg, DE
• Bernd Richter · Dresden, DE

Key dates

• Filing date: Jun 28, 1984
• Grant date: Sep 15, 1987
• Expiry date: Jun 28, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E30/30
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A remotely operable tool assembly includes a tool for plugging heat exchanger tubes, the tool including a multi-partite plug to be clamped to a tube, a nut connected to one of the parts of the plug, a tensioning device including a rod to be connected to the nut, and a sleeve surrounding the rod for connection to the nut, a linear drive connected to the rod for moving the rod in a linear direction in turn moving the plug parts into and out of a tensioning position, and a rotary drive coupleable to the sleeve for rotating the sleeve with a screw motion in the tensioning position of the plug parts.