Subsea device for providing a pressurized fluid

Abstract

A subsea device is configured to provide a pressurized fluid for a fluid activated consumer. The subsea device includes a pump body including an opening, a fluid accumulator in fluid communication with the opening, and a piston arranged within the opening and movable back and forth in a longitudinal direction of the opening. The subsea device includes furthermore a solenoid coupled to the piston and configured to move the piston in at least one of the back and forth directions.

What is claimed is: 
     
         1 . A subsea device configured to provide a pressurized fluid for a fluid activated consumer, the subsea device comprising:
 a pump body including an opening;   a fluid accumulator to store pressurized fluid, the fluid accumulator being configurable to be in fluid communication with the opening;   a piston, arranged within the opening and movable back and forth in a longitudinal direction of the opening; and   a solenoid, coupled to the piston and configured to move the piston in at least one of the back and forth directions, wherein a movement of the piston in at least one of the back and forth directions pressurizes the fluid in the opening to provide the pressurized fluid.   
     
     
         2 . The subsea device of  claim 1 , further comprising:
 a level indicator at the fluid accumulator, the level indicator being configured to provide a level signal indicating a charging level of the fluid accumulator.   
     
     
         3 . The subsea device of  claim 2 , further comprising:
 a control circuit, coupled to the level indicator of the fluid accumulator and to the solenoid, the control circuit being configured to control the solenoid in response to the level signal received from the level indicator.   
     
     
         4 . The subsea device of  claim 2 , wherein the fluid accumulator includes a spring pressurized piston arranged within an opening of the fluid accumulator, and wherein the level signal of the level indicator indicates a position of the spring pressurized piston within the opening of the fluid accumulator. 
     
     
         5 . The subsea device of  claim 1 , further comprising:
 a check valve, arrangable in the fluid communication between the opening of the pump body and the fluid accumulator such that the check valve is configured to allow a fluid flow from the opening to the fluid accumulator and prohibit a fluid flow from the fluid accumulator to the opening.   
     
     
         6 . The subsea device of  claim 1 , further comprising:
 a further check valve, arrangable in a further fluid communication coupling the opening to a hydraulic fluid reservoir, the further check valve being arrangable such that the further check valve is configured to allow a fluid flow from the hydraulic fluid reservoir to the opening and prohibit a fluid flow from the opening to the hydraulic fluid reservoir.   
     
     
         7 . The subsea device of  claim 1 , further comprising:
 a housing to accommodate at least the pump body, the fluid accumulator, the piston and the fluid to be pressurized, wherein the fluid to be pressurized will at least partially surrounds at least one of the pump body, the fluid accumulator and the piston.   
     
     
         8 . A subsea system configured to provide a pressurized fluid for a fluid activated consumer in a subsea environment, the subsea system comprising:
 at least two of the subsea devices of  claim 1 , wherein each of the subsea devices of the at least two subsea devices provides pressurized fluid at a corresponding output of the subsea device; and   a valve arrangement coupling to the outputs of the at least two subsea devices in parallel.   
     
     
         9 . A subsea station, comprising:
 a fluid activated consumer arranged subsea; and   the subsea device of  claim 1 , wherein the subsea device is coupled to the fluid activated consumer to supply the pressurized fluid to the fluid activated consumer, wherein the subsea device is arranged subsea.   
     
     
         10 . The subsea device of  claim 3 , wherein the fluid accumulator includes a spring pressurized piston arranged within an opening of the fluid accumulator, and wherein the level signal of the level indicator indicates a position of the spring pressurized piston within the opening of the fluid accumulator. 
     
     
         11 . The subsea device of  claim 2 , further comprising:
 a check valve, arrangable in the fluid communication between the opening of the pump body and the fluid accumulator such that the check valve is configured to allow a fluid flow from the opening to the fluid accumulator and prohibit a fluid flow from the fluid accumulator to the opening.   
     
     
         12 . The subsea device of  claim 2 , further comprising:
 a further check valve, arrangable in a further fluid communication coupling the opening to a hydraulic fluid reservoir, the further check valve being arrangable such that the further check valve is configured to allow a fluid flow from the hydraulic fluid reservoir to the opening and prohibit a fluid flow from the opening to the hydraulic fluid reservoir.   
     
     
         13 . The subsea device of  claim 3 , further comprising:
 a check valve, arrangable in the fluid communication between the opening of the pump body and the fluid accumulator such that the check valve is configured to allow a fluid flow from the opening to the fluid accumulator and prohibit a fluid flow from the fluid accumulator to the opening.   
     
     
         14 . The subsea device of  claim 3 , further comprising:
 a further check valve, arrangable in a further fluid communication coupling the opening to a hydraulic fluid reservoir, the further check valve being arrangable such that the further check valve is configured to allow a fluid flow from the hydraulic fluid reservoir to the opening and prohibit a fluid flow from the opening to the hydraulic fluid reservoir.   
     
     
         15 . The subsea device of  claim 10 , further comprising:
 a check valve, arrangable in the fluid communication between the opening of the pump body and the fluid accumulator such that the check valve is configured to allow a fluid flow from the opening to the fluid accumulator and prohibit a fluid flow from the fluid accumulator to the opening.   
     
     
         16 . The subsea device of  claim 15 , further comprising:
 a further check valve, arrangable in a further fluid communication coupling the opening to a hydraulic fluid reservoir, the further check valve being arrangable such that the further check valve is configured to allow a fluid flow from the hydraulic fluid reservoir to the opening and prohibit a fluid flow from the opening to the hydraulic fluid reservoir.   
     
     
         17 . A subsea system configured to provide a pressurized fluid for a fluid activated consumer in a subsea environment, the subsea system comprising:
 at least two of the subsea devices of  claim 2 , wherein each of the subsea devices of the at least two subsea devices provides pressurized fluid at a corresponding output of the subsea device; and   a valve arrangement coupling to the outputs of the at least two subsea devices in parallel.   
     
     
         18 . A subsea system configured to provide a pressurized fluid for a fluid activated consumer in a subsea environment, the subsea system comprising:
 at least two of the subsea devices of  claim 3 , wherein each of the subsea devices of the at least two subsea devices provides pressurized fluid at a corresponding output of the subsea device; and   a valve arrangement coupling to the outputs of the at least two subsea devices in parallel.   
     
     
         19 . A subsea station, comprising:
 a fluid activated consumer arranged subsea; and   the subsea device of  claim 2 , wherein the subsea device is coupled to the fluid activated consumer to supply the pressurized fluid to the fluid activated consumer, wherein the subsea device is arranged subsea.   
     
     
         20 . A subsea station, comprising:
 a fluid activated consumer arranged subsea; and   the subsea device of  claim 3 , wherein the subsea device is coupled to the fluid activated consumer to supply the pressurized fluid to the fluid activated consumer, wherein the subsea device is arranged subsea.