Downhole hydraulic directional control valve used by hydraulic power pumps and working method thereof
US12168912B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2023 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | Nov 29, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a downhole hydraulic directional control valve, comprising a valve body assembly having a shell, an outer tube being provided in the shell, a middle joint connecting the outer tube and an upper cylinder, an outer cylinder connected to the upper cylinder, and a double-way joint being provided with an oil inlet hole, and connecting top ends of the outer cylinder and an inner cylinder; a valve core assembly having an upper valve core, and a lower valve core being positioned at bottom end of the upper valve core and further positioned in a lower cylinder at bottom end of the middle joint; and, a plunger assembly having a first plunger part positioned in the inner cylinder and a second plunger part at bottom end of the first plunger part. By using this valve, the operation efficiency is improved, and the reliability of the equipment is ensured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.