Face seal device with additional mass for high rotational speeds

US6517078B2 · kind B2 · utility

Assignee

• Burgmann Dichtungswerke GmbH and Co. KG · DE

Inventors

• Andreas Schruefer · Wolfratshausen, DE
• Werner Wolf · R. José Sebastião Soares, AT
• Guenther Lederer · Geretsried, DE
• Peter Droescher · Wolfratshausen, DE
• Josef Nosowicz · Geretsried, DE
• Georg Steigenberger · Bad Windsheim, DE

Key dates

• Filing date: Nov 23, 2001
• Grant date: Feb 11, 2003
• Expiry date: Nov 23, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/3472
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A face seal device for use with components rotating at a high rotational speed includes a non-rotating face seal ring (5) and a rotary face seal ring (11). The rotary face seal ring is mounted in a loose fit for common rotation with a rotating component and includes a sealing face (6) which, in operation, is essentially radially aligned for cooperation with an opposite sealing face (16) of the non-rotating face seal ring. A heavy-mass-contributing element (22) is arranged to rotate in common with the rotating component and engages a portion of the rotary face seal ring. The center of gravity of the heavy-mass-contributing element is axially spaced from that of the rotary face seal ring, whereby, in operation, a torque directed towards the non-rotating face seal ring is applied to the rotary face seal ring. This torque arises from the centrifugal forces that correspond to the mass-contributing element and the spacing between the centers of gravity.