Hydrostatic mechanical seal with local pressurization of seal interface
US7389832B2 · kind B2 · utility
6Cited by
20References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 2006 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Aug 10, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/01
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrostatic mechanical seal assembly includes a locally deployed pump for pressurizing a lubricant fluid between the opposing faces of a mating ring and a sealing ring. In one exemplary embodiment, such pressurization may be achieved via a device that converts the rotational motion of a drive shaft into fluid pressure. The locally deployed pump is intended to advantageously provide a stable positive pressure on the sealing interface between the mating and sealing rings, which may provide improved sealing characteristics, especially in demanding downhole environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.