Fluid activated flow control apparatus

• US 9,841,769 B2
• Filed: 04/18/2016
• Issued: 12/12/2017
• Est. Priority Date: 02/12/2007
• Status: Active Grant

• Current Assignee: Colt Irrigation LLC
• Original Assignee: Colt Irrigation LLC
• Inventors: Hurst, James Walter
• Primary Examiner(s): MCCALISTER, WILLIAM M
• Application Number:
  US15/131,934
• Publication Number:
  US 20160327962A1
• Time in Patent Office: 603 Days
• Field of Search: 13711903, 13711904, 13711905, 13711907, 13711908, 137488
• CPC Class Codes: F16K 11/22 with an actuating member for each valve, e.g. interconnected to form multiple-way valves
• CPC Class Codes: F16K 31/385 the fluid acting on a diaphragm
• CPC Class Codes: G05D 7/012 the sensing element being deformable and acting as a valve
• CPC Class Codes: G05D 7/018 using rotary sensing element
• CPC Class Codes: G05D 7/03 with auxiliary non-electric power G05D7/005 takes precedence
• CPC Class Codes: Y10T 137/0379 By fluid pressure
• CPC Class Codes: Y10T 137/268 Responsive to pressure or flow interruption
• CPC Class Codes: Y10T 137/7793 With opening bias [e.g., pressure regulator]

Abstract

Embodiments of a fluid flow regulating device and methods of using the same are described. Certain embodiments manages fluid flow between one or more input ports and output ports at least partly in response to fluid pressure changes and/or by a mechanism driven by fluid flow, optionally without using electrical power.

Claims

1. A fluid regulator, comprising:

a fluid inlet;

a fluid outlet;

a first piston;

a plurality of fluid passages including a first fluid passage and a second fluid passage;

a first housing having a fluid connector configured to engage an output valve having a second housing;

an actuator configured to, without utilizing an electrically powered component;

open the output valve to provide a fluid flow path between the fluid inlet and the fluid outlet at least partly in response to;

a first flow of fluid received via the fluid inlet that causes a first movement of the first piston that opens the first fluid passage, and

a fluid flow through the fluid connector from the output valve second housing;

the actuator further configured to, without utilizing an electrically powered component;

close the output valve to obstruct the fluid flow path between the fluid inlet and fluid outlet at least partly in response to;

an interruption of the first flow of fluid received via the fluid inlet,

a subsequent, relative to the interruption of the first flow, second flow of fluid received via the fluid inlet, that causes a second movement of the first piston, and

an interruption of the fluid flow through the fluid connector from the output valve second housing caused at least in part by a closure of the first fluid passage which is caused by the second movement of the first piston.

2. The fluid regulator as defined in claim 1, the fluid regulator further configured to:

at least partly in response to the second movement of the first piston, transition the second fluid passage from a closed state to an open state.

3. The fluid regulator as defined in claim 1, wherein the fluid inlet comprises a plurality of fluid inlets, and the fluid outlet comprise a plurality of fluid outlets.

4. The fluid regulator as defined in claim 1, wherein the fluid connector of the first housing comprises a male threaded connector.

5. The fluid regulator as defined in claim 1, wherein the output valve having the second housing comprises a female threaded connector configured to threadedly engage the fluid connector of the first housing.

6. The fluid regulator as defined in claim 1, wherein the first fluid passage and the second fluid passage are fluidly connected via the fluid connector to a diaphragm port of the output valve.

7. The fluid regulator as defined in claim 1, the fluid regulator further configured to:

maintain the first fluid passage in an open state during the interruption of the first flow of fluid.

8. The fluid regulator as defined in claim 1, wherein the fluid flow through the fluid connector from the output valve second housing comprises a gas or a liquid.

9. A fluid regulator, comprising:

a fluid inlet;

a fluid outlet;

one or more pistons including a first piston;

a plurality of fluid passages including a first fluid passage and a second fluid passage;

a first housing having a fluid connector configured to engage an output valve having a second housing;

an actuator configured to, without utilizing an electrically powered component;

open the output valve to provide a fluid flow path between the fluid inlet and the fluid outlet at least partly in response to;

a first pressure increase of a fluid flow received via the fluid inlet that equals or exceeds a first threshold, which causes a first movement of the first piston, which causes the first fluid passage to transition from a closed state to an opened state, and

a fluid flow through the fluid connector from the output valve second housing;

the actuator further configured to, without utilizing an electrically powered component;

close the output valve to obstruct the fluid flow path at least partly in response to;

a first pressure reduction of the fluid flow, received via the fluid inlet, that falls to or below a second threshold,

a subsequent, relative to the first pressure reduction, second pressure increase of the fluid flow, received via the fluid inlet, that equals or exceeds the first threshold, that causes a second movement of the first piston, and

an interruption of the fluid flow through the fluid connector from the output valve second housing caused at least in part by the closure of the first fluid passage, which is caused at least in part by the second movement of the first piston.

10. The fluid regulator as defined in claim 9, the fluid regulator further configured to open the second fluid passage at least partly in response to the second movement of the first piston.

11. The fluid regulator as defined in claim 9, wherein the first threshold and/or the second threshold are user configurable via a mechanical control of the fluid regulator.

12. The fluid regulator as defined in claim 9, wherein the fluid inlet comprises a plurality of fluid inlets, and the fluid outlet comprise a plurality of fluid outlets.

13. The fluid regulator as defined in claim 9, wherein fluid connector of the first housing comprises a male threaded connector.

14. The fluid regulator as defined in claim 9, wherein the output valve having the second housing comprises a female threaded connector configured to threadedly engage the fluid connector of the first housing.

15. The fluid regulator as defined in claim 9, wherein the first fluid passage and the second fluid passage are fluidly connected via the fluid connector to a diaphragm port of the output valve.

16. The fluid regulator as defined in claim 9, the fluid regulator further configured to:

maintain the first fluid passage in an open state during the first reduction in pressure of the first input flow of fluid.

17. The fluid regulator as defined in claim 9, wherein the fluid flow through the output valve comprises a gas or a liquid.

18. A fluid regulator, comprising:

a fluid inlet;

a fluid outlet;

a first piston;

a first fluid passage and a second fluid passage;

a first housing having a fluid connector configured to engage a plurality of output valves having a second housing;

an actuator configured to, without utilizing an electrically powered component;

open the plurality of output valves to provide a fluid flow path between the fluid inlet and the fluid outlet at least partly in response to;

a first pressure increase of a fluid flow received via the fluid inlet that equals or exceeds a first threshold, which causes

a first movement of the first piston, which causes the first fluid passage to transition from a closed state to an opened state, and

a fluid flow through the fluid connector from the plurality of output valves second housing;

the actuator further configured to, without utilizing an electrically powered component;

close the plurality of output valves to obstruct the fluid flow path at least partly in response to;

a first pressure reduction of the fluid flow received via the fluid inlet that falls to or below a second threshold,

a subsequent, relative to the first pressure reduction, second pressure increase of the fluid flow via the fluid inlet that is equal to or exceeds the first threshold, that causes

a second movement of the first piston, and

an interruption of the fluid flow through the fluid connector from the plurality of output valves second housing caused at least in part by the closure of the first fluid passage, which is caused at least in part by the second movement of the first piston.

19. The fluid regulator as defined in claim 18, the fluid regulator further configured to:

maintain the first fluid passage in an open state during the first reduction in pressure of the first input flow of fluid.

20. The fluid regulator as defined in claim 18, the fluid regulator further configured to:

open the second fluid passage at least partly in response to the second movement of the first piston.

21. The fluid regulator as defined in claim 18, wherein the first threshold and/or the second threshold are user configurable via a mechanical control of the fluid regulator.