Mechanical seal assembly with safety seal

US11231042B2 · kind B2 · utility

Assignee

• EagleBurgmann Germany GmbH & Co. KG · DE

Inventors

• Ferdinand Werdecker · Walchensee, DE
• Florian Bauer · Friedberg, DE
• Stephan Rankl · Gilching, DE
• Benjamin Hellmig · Munich, DE
• Klaus Kneissl · Dietramszell, DE

Key dates

• Filing date: Jan 16, 2018
• Grant date: Jan 25, 2022
• Expiry date: Sep 1, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/3484
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a mechanical seal assembly comprising a mechanical seal (2) comprising a rotating mechanical seal (20) and a stationary mechanical seal (21) defining a sealing gap (22) therebetween, and a one-piece safety seal (3) provided as a redundant seal in the event of failure of the mechanical seal (2) and adapted to seal at a rotating component, the safety seal (3) comprising a base body (30) and a sealing area (31) projecting from the base body (30) in the axial direction (X-X) and being flexible, a thickness of the sealing area (31) in the radial direction being smaller than a thickness of the base body (30) in the radial direction, and the safety seal (3) being arranged in a stationary manner and comprising a sealing surface (32) on an inner circumference.