Back to results
US 12,253,184 B2Granted
Failsafe actuated valve
AssigneeEaton Intelligent Power Limited
InventorsGraham Peter Baker, Parag More, Daniel Peck, Abhijit Shrikrishna Borawake, Jason Robert Miner
Life of this patent
Estimating the term…
Abstract
A failsafe valve system configured to bring the valve to a predefined state (e.g., fully opened, fully closed) if the actuator fails (e.g., loss of power). The failsafe system of the present disclosure is energy efficient and reliable.
Claims11
A failsafe drive adapter for providing failsafe capabilities to an actuator and a valve assembly, the failsafe drive adapter comprising:
- a failsafe drive adapter housing base;
- a failsafe drive adapter cover mounted to the failsafe drive adapter housing base;
- the failsafe drive adapter cover having a first connection interface for engaging with a housing of the actuator;
- the failsafe drive adapter housing base having a second connection interface for engaging with a housing of the valve assembly;
- an actuator plate located within the failsafe drive adapter housing base, the actuator plate defining a first interface configured to be coupled to an actuator output of the actuator;
- a valve plate located within the failsafe drive adapter housing base, the valve plate defining a second interface configured to be coupled to an input shaft of the valve assembly;
- and
- a failsafe plate located adjacent the valve plate, the failsafe plate comprising ratchet lock pins that engage the valve plate to move the valve plate to an open position in the event of a power failure to the actuator, and the valve plate located between the actuator plate and the failsafe plate;
- wherein the failsafe drive adapter is configured to drive the rotation of the input shaft in a failsafe state to a predetermined fluid flow state;
- wherein the failsafe drive adapter is configured such that it does not require electrical power to function;
- wherein the failsafe drive adapter is in a dormant state when the actuator receives electrical power;
- and
- wherein the failsafe drive adapter automatically activates in the event of a power failure to the actuator.
10 more elements
A failsafe drive adapter comprising:
- a failsafe drive adapter housing base;
- a failsafe drive adapter cover mounted to the failsafe drive adapter housing base;
- an actuator plate located within the failsafe drive adapter housing base, the actuator plate defining a first interface configured to be coupled to an actuator output of an actuator, wherein the actuator plate includes at least one pivoting latch that is configured to selectively engage a failsafe plate to drive the failsafe plate and preload a torsion spring;
- a valve plate located within the failsafe drive adapter housing base, the valve plate defining a second interface configured to be coupled to an input shaft of a valve assembly;
- a solenoid, wherein the failsafe drive adapter is automatically engaged when the solenoid is de-energized, and the solenoid maintains preload on the loaded torsion spring when energized and once the solenoid is de-energized, the loaded torsion spring releases its energy which decouples the actuator from the input shaft of the valve assembly and engages a drive assembly of the failsafe drive adapter with the input shaft of the valve assembly;
- and
- a solenoid spindle connected to the solenoid, the solenoid spindle including an annular collar portion that is configured to drive the valve plate axially and maintain the axial position of the valve plate when the solenoid is energized, and radially extending tabs that engage with the failsafe plate to limit the rotation of the failsafe plate when engaged;
- wherein the failsafe drive adapter is configured to drive the rotation of the input shaft in a failsafe state to a predetermined fluid flow state,
- wherein the failsafe drive adapter is configured such that it does not require electrical power to function,
- wherein the failsafe drive adapter is in a dormant state when the actuator receives electrical power, and
- wherein the failsafe drive adapter automatically activates in the event of a power failure to the actuator.
8 more elements
A failsafe drive adapter comprising:
- a failsafe drive adapter housing base;
- a failsafe drive adapter cover mounted to the failsafe drive adapter housing base;
- an actuator plate located within the failsafe drive adapter housing base, the actuator plate defining a first interface configured to be coupled to an actuator output of an actuator;
- a valve plate located within the failsafe drive adapter housing base, the valve plate defining a second interface configured to be coupled to an input shaft of a valve assembly;
- a solenoid, wherein the failsafe drive adapter is automatically engaged when the solenoid is de-energized, and the solenoid maintains preload on a loaded torsion spring when energized and once the solenoid is de-energized, the loaded torsion spring releases its energy which decouples the actuator from the input shaft of the valve assembly and engages a drive assembly of the failsafe drive adapter with the input shaft of the valve assembly;
- and
- a solenoid spindle connected to the solenoid, the solenoid spindle including an annular collar portion that is configured to drive the valve plate axially and maintain the axial position of the valve plate when the solenoid is energized, and radially extending tabs that engage with the failsafe plate to limit the rotation of the failsafe plate when engaged,
- wherein the failsafe drive adapter is configured to drive rotation of the input shaft in a failsafe state to a predetermined fluid flow state,
- wherein the failsafe drive adapter is configured such that it does not require electrical power to function,
- wherein the failsafe drive adapter is in a dormant state when the actuator receives electrical power, and
- wherein the failsafe drive adapter automatically activates in the event of a power failure to the actuator.
8 more elements
Dependencies are inferred from the claim text.