Safety brake for electrical submersible pumps powered by permanent magnet motors
US12378853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2024 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Feb 21, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2127/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device disclosed herein is used with an electric submersible pump (ESP) assembly disposed on tubing in a well. A housing of the device connects between tubing and pump. A shaft in the housing can rotate in response to imparted rotation associated with the pump and permanent magnet (PM) motor. A piston in the housing can move longitudinally relative to the shaft in response to a pressure differential across the piston. A clutch on the piston can engage and disengage with a distal end of the shaft in response to the piston's movement of the piston. Additionally or alternatively, a key on the piston can engage and disengage with a pocket on the shaft. The engagement of the clutch and/or key can prevent imparted rotation associated with the pump and the PM motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.