A setting/operating device includes a first motor; a sun gear that rotates by receiving a rotating force from the first motor; a first internal gear disposed so as to surround the sun gear; a second motor that applies a force to the first internal gear in a direction in which rotation of the first internal gear is prevented; a plurality of planetary gears disposed between the sun gear and the first internal gear, engaged with the sun gear and the first internal gear, and capable of rotating on the axes thereof while revolving around the sun gear; a rotation mechanism that rotates by receiving rotating forces of the plurality of planetary gears; an output shaft that is coupled to the rotation mechanism; and a spring unit that applies a rotating force to the output shaft when supply of electric power to the first motor and the second motor is stopped.

A setting/operating device includes a sun gear that rotates by receiving a rotating force from a motor; a first internal gear that has teeth on the inner peripheral surface thereof and is provided so as to surround the sun gear; a plurality of planetary gears that are engaged with the sun gear and the first internal gear and capable of rotating on axes thereof while revolving around the sun gear; a rotation mechanism that rotates by receiving rotating forces of the plurality of planetary gears; an output shaft that is coupled to the rotation mechanism; a rotation control member made of a material that expands in response to voltage application; and a housing in which the rotation control member is disposed in a gap between the first internal gear and the housing so as to make contact with the first internal gear and the housing.

An actuator includes: a fixed internal gear that is formed in an annular shape, has a tooth on an inner peripheral surface thereof, and is non-rotatably provided; a movable internal gear that is formed in an annular shape, has a tooth on an inner peripheral surface thereof, and is rotatably provided coaxially with the fixed internal gear; a plurality of external gears that mesh with the fixed internal gear and the movable internal gear, and rotate along an inner peripheral surface of the fixed internal gear; and a carrier that is formed in an annular shape, rotatably supports the external gears, has a tooth for receiving a turning force from a drive motor on an outer peripheral surface thereof, transmits a turning force from the drive motor to the external gears, and is rotatably provided coaxially with the movable internal gear.

A setting/operating device includes a sun gear that rotates by receiving a rotating force from a driving motor; a first internal gear that has teeth on the inner peripheral surface thereof, the first internal gear being provided rotatably so as to surround the sun gear; a plurality of planetary gears that are disposed between the sun gear and the first internal gear, engaged with the sun gear and the first internal gear, and capable of rotating on axes thereof while revolving around the sun gear; a rotation mechanism that rotates by receiving rotating forces of the plurality of planetary gears; an output shaft that is coupled to the rotation mechanism; a housing that accommodates the sun gear, the first internal gear, the plurality of planetary gears, and the rotation mechanism; and a rotation control mechanism that switches between a rotatable state and an unrotatable state of the first internal gear.

A setting/operating device for operating a valve stem of a regulating valve, including: a sun gear that rotates upon reception of a rotational force from a drive motor; a fixed internal gear fixedly disposed to surround the sun gear and having teeth on an inner peripheral surface; a plurality of planetary gears disposed between the sun gear and the fixed internal gear that rotate in engagement with the sun gear and the fixed internal gear while revolving around the sun gear; a movable internal gear rotatably disposed coaxially with the fixed internal gear, having teeth that engage the planetary gear on an inner peripheral surface; and an output shaft coupled to the movable internal gear and configured to rotate the valve stem of the regulating valve, wherein the planetary gears have a torque limit structure that restricts power transmission when a torque exceeding a certain level is applied.

A dual trip manifold assembly (TMA) includes an isolation valve assembly having a first valve configured to receive a flow of fluid from a hydraulic system fluid supply. The first valve is configured to channel the flow of fluid to at least one hydraulic circuit. The isolation valve assembly also includes a second valve configured to receive the flow of fluid from the at least one hydraulic circuit. The second valve is further configured to channel the fluid flow to a trip header. The first valve and the second valve are synchronized to each other such that rotation of one valve causes a substantially similar rotation in the other valve.

Various devices and techniques related to magnetically-actuated valves are generally described. In some examples, magnetically-actuated valves may include an asymmetric torque magnetic valve actuator effective to generate a first amount of torque when disposed in a first orientation and a second amount of torque when disposed in a second orientation. In some other examples, the valves may include mechanical stops that prevent binding of the valves in a closed or open position.

A setting/operating device includes: a drive motor, a sun gear that rotates by force from the drive motor; a fixed internal gear; planetary gears configured to be rotatable in engagement with the fixed internal gear while revolving around the sun gear; a movable internal gear disposed coaxially with the fixed internal gear and provided so as to be rotatable in engagement with the planetary gears; an output shaft coupled to the movable internal gear and configured to rotate a valve stem of a regulating valve; wherein the planetary gear includes: a first gear portion configured to engage the sun gear and the fixed internal gear, a second gear portion disposed coaxially with the first gear portion and configured to engage the movable internal gear; and an elastically deformable portion having a smaller elastic modulus formed integrally between the first gear portion and the second gear portion.

A dual trip manifold assembly (TMA) includes an isolation valve assembly having a first valve configured to receive a flow of fluid from a hydraulic system fluid supply. The first valve is configured to channel the flow of fluid to at least one hydraulic circuit. The isolation valve assembly also includes a second valve configured to receive the flow of fluid from the at least one hydraulic circuit of the at least two hydraulic circuits. The second valve is further configured to channel the fluid flow to a trip header and to receive the fluid flow from the trip header. The first valve and the second valve are synchronized to each other such that rotation of one of said first and second valves causes a substantially similar rotation in the other of said first and second valves header.

The force limited valve actuator operates on light-duty valves. The actuator includes signal controlled motor which drives a two piece threaded screw-nut drive. The nut connected to the motor and the screw connected to the valve stem. The nut has a spring loaded actuation surface/plate. The nut body has a positional indicator stem used as a valve-motor control. Operationally, the screw-nut-set moves between first, second and third positions. First: actuation plate at neutral and valve-stem at valve OPEN stop (example). Second: screw protrudes outboard of nut and valve-stem at CLOSE stop and actuation plate at neutral. Third: plate moves away from valve-stem (beyond neutral) while stem at CLOSE which third movement is a force sensor. First, second and third positions are all one way screw rotation. Force limited on stem by damper-shock absorber action. The positional indicator effects ON-OFF valve control.