Ultrahigh-pressure sealing device and reciprocating pump
US9638330B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2016 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jun 16, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/38
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An ultrahigh-pressure sealing device improves sealing performance under ultrahigh pressures and improves durability. The ultrahigh-pressure sealing device is arranged to seal an annular space between an outer member and an inner member and separates between a high-pressure chamber and a low-pressure chamber. A bottom ring includes a first inner periphery, a first large-diameter outer periphery, a first small-diameter outer periphery, and a first middle outer periphery. A back-up ring includes a second inner periphery, a second engagement portion, and a second outer periphery. A packing ring includes a third low-pressure-chamber end, a third inner periphery, a third large-diameter outer periphery, a third the small-diameter outer periphery, and a third middle outer periphery. An elastic ring includes a fourth inner periphery, a fourth the engagement portion, and a fourth outer periphery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.