Mechanical seal arrangement and well bore conveyor device

US10955054B2 · kind B2 · utility

Assignee

• EagleBurgmann Germany GmbH & Co. KG · DE

Inventors

• Peter Droscher · Geretsried, DE
• Andreas Pehl · Poing, DE
• Dieter Pfeil · Eurasburg, DE
• Berthold Schulten · Geretsried, DE
• Glenn H. Schmidt · Malibu, US
• Eric Vanhie · Evergem, BE

Key dates

• Filing date: Apr 18, 2017
• Grant date: Mar 23, 2021
• Expiry date: Jun 15, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/40
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A mechanical seal arrangement includes a first mechanical seal with a rotating slide ring and a stationary slide ring, which define a sealing gap in between them. The mechanical seal arrangement includes a first sealing space that is filled with a sealing liquid. The first mechanical seal seals off the sealing space against a surrounding area, a first piston arrangement with a piston element and flexible wall areas that define a first piston interior space, wherein the first piston interior space is in fluid connection with the first sealing space. A piston outer surface of the piston element is in fluid connection with the surrounding area, and a first pre-stressing appliance that exerts a first preload force (F1) on the piston element of the first piston arrangement.