Dry gas seal with electronically controlled shutdown valve
US10436328B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2017 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Jun 9, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A mechanical seal system configured to inhibit the emission of process gas from a rotating machine. An annular plunger is axially slidable between a inboard closed position and an outboard open position such that when the plunger is in the closed position, the plunger inhibits the flow of the sealing fluid between the inlet passageway to the seal interface, and when the plunger is in the closed position, the plunger enables the flow of the sealing fluid between the inlet passageway and the seal interface. A biasing mechanism and solenoid provide opening and closing forces to the plunger. Normally-open and normally-closed configurations are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.