IP Library › Granted Patent US 10,066,757
Granted Patent B2
US 10,066,757 · App. 15/726,817 · Granted Sep 4, 2018

Actuator

Inventor: Alagarsamy Sundararajan (Sugarland, TX)
Assignee: SRI Energy, Inc.
F16K31/1221F16K3/0254F16K31/122Y10T137/6072
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,066,757
App. No.
15/726,817
Granted
Sep 4, 2018
Kind
B2
Abstract

A valve actuator assembly having an actuator housing coupled to a bonnet and a housing lid. A hydraulic cylinder is positioned within the actuator housing and directly coupled to the bonnet. A piston is positioned within the hydraulic cylinder and coupled to a spring lifter assembly and a spring is positioned within the actuator housing and having a first end and a second end, the first end being coupled to a lower surface of the housing lid, and the second end being coupled to the spring lifter assembly. An operating stem is coupled to the piston and positioned in a channel extending through the bonnet to a valve body assembly.

Claims (35)

1. A valve actuator assembly comprising:

an actuator housing coupled to a bonnet and a housing lid;

a hydraulic cylinder positioned within the actuator housing and coupled to the bonnet;

a piston positioned within the hydraulic cylinder and coupled to a spring lifter assembly;

a spring positioned within the actuator housing and having a first end and a second end, the first end coupled to a lower surface of the housing lid, and the second end coupled to the spring lifter assembly; and

an operating stem coupled to the piston, positioned in a channel, and extending through the bonnet to a valve body assembly.

2. The valve actuator assembly of claim 1 comprising a pressure compensator positioned externally and adjacent to the actuator housing.

3. The valve actuator assembly of claim 1 wherein the operating stem is coupled to a gate.

4. The valve actuator assembly of claim 1 wherein the hydraulic cylinder directly contacts the bonnet.

5. The valve actuator assembly of claim 1 comprising a pressure compensator inside the actuator housing.

6. The valve actuator assembly of claim 5 wherein the pressure compensator is positioned within a recess of the housing lid.

7. The valve actuator assembly of claim 5 wherein the pressure compensator includes a free-floating piston, an outer sleeve guide, and an inner sleeve guide.

8. The valve actuator assembly of claim 7 wherein the free-floating piston is configured to travel from a first position to a second position based on a pressure differential between fluid contained within the actuator housing and pressure immediately external to the valve actuator assembly.

9. The valve actuator assembly of claim 1 wherein the spring is between the lower surface of the housing lid and the bonnet.

10. The valve actuator assembly of claim 1 wherein a majority of the hydraulic cylinder is within the actuator housing.

11. The valve actuator assembly of claim 1 comprising:

a port to fluidly couple the hydraulic cylinder to a hydraulic fluid source that is external to the valve actuator assembly;

wherein the piston is configured to move within the hydraulic cylinder in response to hydraulic fluid traversing the port.

12. A valve actuator system comprising:

an actuator housing coupled to a bonnet and a housing lid;

a hydraulic cylinder positioned within the actuator housing and coupled to the bonnet;

a piston positioned within the hydraulic cylinder and coupled to a spring lifter assembly;

a spring positioned within the actuator housing and having a first end and a second end, the first end coupled to a lower surface of the housing lid, and the second end coupled to the spring lifter assembly; and

an operating stem coupled to the piston, positioned in a channel, extending through the bonnet, and configured to couple to a valve body assembly.

13. The valve actuator system of claim 12 wherein the operating stem is coupled to a gate.

14. The valve actuator system of claim 12 wherein the hydraulic cylinder directly contacts the bonnet.

15. The valve actuator system of claim 12 comprising a pressure compensator inside the actuator housing.

16. The valve actuator system of claim 15 wherein the pressure compensator includes a free-floating piston, an outer sleeve guide, and an inner sleeve guide.

17. The valve actuator system of claim 16 wherein the free-floating piston is configured to travel from a first position to a second position based on a pressure differential between fluid contained within the actuator housing and pressure immediately external to the valve actuator assembly.

18. The valve actuator system of claim 12 wherein the spring is between the lower surface of the housing lid and the bonnet.

19. The valve actuator system of claim 12 wherein a majority of the hydraulic cylinder is within the actuator housing.

20. The valve actuator system of claim 12 comprising:

a port to fluidly couple the hydraulic cylinder to a hydraulic fluid source that is external to the valve actuator system; and

the valve body assembly;

wherein the piston is configured to move within the hydraulic cylinder in response to hydraulic fluid traversing the port.

Continuity (3)
Continuation 14486559 · Sep 15, 2014
Provisional Application 61878838 · Sep 17, 2013
Related Publication 20180031139A1 · Feb 1, 2018
Cited By (3)
US 12,203,559 US 12,345,345 US 12,359,743