System for hydraulic pressure relief valve operation
AssigneeExpro Americas, LLC
InventorsAnand Parthasarathy, Scott Charles
Life of this patent
Estimating the term…
Abstract
A hydraulic power unit (HPU) configured for use with a pressure relief valve (PRV) having an open port and a close port is provided. The HPU includes a pneumatic primary pump, a hydraulic fluid reservoir, an accumulator, and a two position solenoid directional valve (TPSDV). The hydraulic fluid reservoir is in fluid communication with the primary pump. The TPSDV is in communication with the primary pump, the reservoir, the accumulator. The TPSDV is configured for fluid communication with the PRV. The HPU is configurable in a PRV fail open configuration and a PRV fail close configuration.
Claims23
A hydraulic power unit (HPU) configured for use with a pressure relief valve (PRV) having an open port and a close port, the HPU comprising:
- a pneumatic primary pump;
- a hydraulic fluid reservoir in fluid communication with the primary pump;
- an accumulator;
- and
- a two position solenoid directional valve (TPSDV) in communication with the primary pump, the reservoir, the accumulator, and the TPSDV is configured for fluid communication with the PRV;
- wherein the HPU is configurable in a PRV fail open configuration and a PRV fail close configuration.
A hydraulic power unit system, comprising:
- a pressure relief valve (PRV) having an open port and a close port;
- and
- a hydraulic power unit (HPU) that includes:
- a pneumatic primary pump;
- a hydraulic fluid reservoir in fluid communication with the primary pump;
- an accumulator;
- and
- a first two position solenoid directional valve (TPSDV) in communication with the primary pump, the reservoir, the accumulator, and the first TPSDV is configured for fluid communication with the PRV;
- wherein the HPU is configurable in a PRV fail open configuration and a PRV fail close configuration.
Dependencies are inferred from the claim text.