US 2026/0169506 A1 · TRIPLE REDUNDANCY ASSEMBLY IN PROCESS CONTROL SYSTEMS

Abstract

A valve system 350 for facilitating triple redundancy that is based on three pilot operated 5X2 solenoid valves (SOVs) incorporates isolation valves 500 to individually isolate any of the three SOVs 302 without affection functioning of the valve system 350, and visual indicator valves (VIVs) 400 to indicate true state of the corresponding solenoid valve 302. The isolation valves 500 include six valve side ports coupled to the ports of the corresponding SOV, and six line side ports coupled to fluid lines. VIVs 400 receive pressure signals from more than one fluid lines fluidically coupled to the corresponding SOV 302, and processes the pressure signals to move to an open position for providing an output pressure signal indicative of an energized state of The SOV 302.

Claims17

Dependent claims

A valve system to selectively couple a fluid inlet with a fluid outlet, the valve system comprising:

three solenoid valves comprising a first solenoid valve, a second solenoid valve and a third solenoid valve, each of the solenoid valves, actuatable between an open position and a closed position and having a plurality of ports;
a plurality of fluid lines comprising inlet fluid lines and outlet fluid lines, each extending from a respective port of one of the solenoid valves to a port of another of the solenoid valves, wherein the solenoid valves are disposed in serial fluid communication with one another;
wherein a single port of one of said solenoid valves is configured as the fluid outlet;
wherein actuation of any two of the first, second, and third solenoid valves alternately couples and decouples the fluid inlet with the fluid outlet;
and
wherein the valve system further comprises a first isolation valve, a second isolation valve and a third isolation valve respectively coupled to the first solenoid valve, the second solenoid valve, and the third solenoid valve such that actuation of the any of the isolation valves results in isolation of the corresponding solenoid valve from the valve system.

3 more elements

An isolation valve for isolating a pilot operated 5X2 solenoid valve in a valve system, the isolation valve being configured to be actuated from a normal position to a bypass position, and configured between the corresponding solenoid valve of the valve system and a plurality of fluid lines fluidically coupled to a respective port of the corresponding solenoid valve;

wherein, in the bypass position the isolation valve isolates the corresponding solenoid valve from the valve system while allowing normal functioning of the valve system.

A valve system to selectively couple a fluid inlet with a fluid outlet, the valve system comprising:

three solenoid valves comprising a first solenoid valve, a second solenoid valve and a third solenoid valve, each of the solenoid valves, actuatable between an open position and a closed position and having a plurality of ports;
a plurality of fluid lines comprising inlet fluid lines and outlet fluid lines, each extending from a respective port of one of the solenoid valves to a port of another of the solenoid valves, wherein the solenoid valves are disposed in serial fluid communication with one another;
wherein a single port of one of said solenoid valves is configured as the fluid outlet;
wherein actuation of any two of the first, second, and third solenoid valves alternately couples and decouples the fluid inlet with the fluid outlet;
and
wherein the valve system further comprises at least one visual indication valve operatively coupled to at least one of the three solenoid valves, the visual indication valve configured to receive pressure signals from more than one fluid lines fluidically coupled to the corresponding solenoid valve, and process the pressure signals to move to an open position for providing an output pressure signal indicative of an energized state of the corresponding solenoid valve.

3 more elements

Dependencies are inferred from the claim text.

Triple redundancy assembly in process control systems

Life of this patent

Triple redundancy assembly in process control systems

Life of this patent

Abstract

Claims17