Zero-emission mechanical seal arrangement

US11680644B2 · kind B2 · utility

Assignee

• EagleBurgmann Germany GmbH & Co. KG · DE

Inventors

• Ferdinand Werdecker · Walchensee, DE
• Andreas Fesl · Otterfing, DE
• Michael Müller · Bichl, DE
• Josef Strobl · Rottach-Egern, DE
• Johannes Strohmeier · Louisenthal, DE
• Benjamin Hellmig · Munich, DE

Key dates

• Filing date: Apr 25, 2019
• Grant date: Jun 20, 2023
• Expiry date: Nov 24, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/342
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a gas-lubricated mechanical seal arrangement (1) comprising a first mechanical seal (2) having a first rotating slide ring (21) and a first slide ring (22) defining a first sealing gap (23) between sealing surfaces (21a, 22a), the first slide ring (22) having a passageway (25) for supplying a barrier fluid to the first sealing gap (23), wherein the passageway (25) extends from a rear surface (22b) to the sliding surface (22a) of the first stationary slide ring (22), and wherein on the first rotating slide ring (21) a first secondary seal (4) for sealing and a centering device (5) for centering of the first rotating slide ring (21) are arranged.