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US 2026/0132862 A1Published application
Actuator for a valve
AssigneeEltorque AS
InventorJon Eirik BRENNVALL
Life of this patent
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Abstract
Described herein is an actuator for a valve, comprising: a main shaft, comprising an opening extending along an axial centreline of the main shaft for receiving a valve stem, a first planetary gear system including a plurality of planetary gears, a first sun gear and a first ring gear wherein the planetary gear system is configured to rotate the main shaft about its axial centreline, and a motor for rotating the first planetary gear system, wherein the axial centreline of the main shaft and a central axis of the sun gear of the planetary gear system are coincident.
Claims16
Actuator for a gate or globe valve, comprising:
- a main shaft (2), comprising an opening (51) extending along an axial centreline of, and through the main shaft (2) for receiving a valve stem of a gate valve or globe valve, and arranged for translating along the axial centreline,
- a first planetary gear system (3, 4, 5, 6) including a plurality of planetary gears (4), a first sun gear (3, 6) and a first ring gear (5) wherein the planetary gear system is configured to rotate the main shaft (2) about its axial centreline, and
- a motor for rotating the first planetary gear system, where the motor comprises a rotor frame which is hollow and surrounds the main shaft which extends through the center of the rotor frame,
- wherein the axial centreline of the main shaft (2), a central axis of the sun gear of the planetary gear system and the axis of rotation of the rotor frame are coincident.
1 more element
Dependencies are inferred from the claim text.