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Setting/operating device

An operator, manual operation technology, applied in the valve operation/release device, gear transmission, valve lift, etc., can solve the problem of the loss of the driving motor holding force, the inability to maintain the opening of the regulating valve, the opening and closing of the valve core, etc.

Active Publication Date: 2017-07-21
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, in rotary control valves such as butterfly valves, the spool of the control valve may open and close due to the force of the controlled fluid.
For example, in the case of an electric actuator, if the power supply to the actuator is cut off due to a power outage in the factory, etc., the holding force of the drive motor inside the actuator will be lost, and the adjustment may not be maintained. valve opening

Method used

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  • Setting/operating device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0038] figure 1 It is a sectional perspective view showing main parts of the manipulator according to the first embodiment.

[0039] figure 1 The manipulator 100 of Embodiment 1 shown is a device for operating a control valve used for process control of a flow rate in a factory or the like, and the valve shaft of the control valve is operated based on an operation signal supplied from an external positioner, This controls the valve opening of the regulating valve. For example, the operator 100 is an electric actuator for operating a rotary regulating valve such as a butterfly valve.

[0040] The manipulator 100 of Embodiment 1 has a singular planetary gear mechanism as a power transmission mechanism for operating the valve shaft of the regulator valve, and has a self-locking function that prevents the valve shaft from moving even when power is not supplied to the electric motor. Furthermore, the manipulator 100 has a function of manually operating the valve shaft and fixing...

Embodiment approach 2

[0078] Figure 7 It is a sectional perspective view showing main parts of the manipulator according to the second embodiment.

[0079] Figure 7 The manipulator 101 of the illustrated second embodiment differs from the manipulator 100 of the first embodiment in that the sun gear, the movable internal gear, and the output shaft are not arranged on the same axis but are arranged on mutually different axes.

[0080] In addition, in the manipulator 101 of Embodiment 2, the same code|symbol is attached|subjected to the same component as the manipulator 100 of Embodiment 1, and the detailed description is abbreviate|omitted.

[0081] Figure 8 It is a plan view showing main parts of the manipulator of Embodiment 2, Figure 9 It is a sectional view showing main parts of the manipulator according to the second embodiment.

[0082] exist Figure 8 In the picture there are from Figure 7 The planar structure of the main part of the manipulator 101 when viewed from the P direction ...

Embodiment approach 3

[0096] Figure 11 It is a sectional perspective view showing main parts of the manipulator according to the third embodiment.

[0097] Figure 11 The manipulator 102 of the illustrated third embodiment differs from the manipulator 100 of the first embodiment in that it has a manual operation mechanism that rotates a planetary gear instead of a sun gear.

[0098] In addition, in the manipulator 102 of Embodiment 3, the same code|symbol is attached|subjected to the same component as the manipulator 100 of Embodiment 1, and the detailed description is abbreviate|omitted.

[0099] Figure 12 It is a plan view showing main parts of the manipulator of Embodiment 3, Figure 13 It is a sectional view showing main parts of the manipulator according to the third embodiment.

[0100] exist Figure 12 In the picture there are from Figure 11 The planar structure of the main part of the manipulator 102 when viewed from the P direction in Figure 13 In the picture there are Figure ...

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PUM

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Abstract

The present disclosure relates to a setting / operating device of the paradox planetary gear mechanism with a manual operation mechanism and capable of being fixed at the expected position. A setting / operating device 100 including: a sun gear 3a that is rotated by a rotational force from a drive motor 2; a fixed internal gear 5 fixedly disposed to surround the sun gear and having teeth on an inner peripheral surface; a plurality of planetary gears 4-1 to 4-3 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 6 disposed coaxially with the fixed internal gear, having teeth that come into engagement with the planetary gear on an inner peripheral surface, and provided so as to be rotatable; an output shaft 7 coupled to the movable internal gear and configured to rotate the valve stem of the regulating valve; and a manual operation mechanism 3b, 8 that rotates the sun gear or the planetary gear by a force applied from the outside of a housing 1.

Description

technical field [0001] The present invention relates to an operator for operating a valve shaft of a control valve, for example an operator for operating a valve shaft of a rotary control valve. Background technique [0002] Conventionally, in chemical plants and the like, regulating valves have been used for process control of flow rates. The valve opening of the regulating valve is adjusted by operating a valve shaft of the regulating valve by an operator (hereinafter also referred to as an “actuator”) based on a control signal from a positioner. [0003] Generally, in a rotary control valve such as a butterfly valve, the spool of the control valve may open and close due to the force of the controlled fluid. For example, in the case of an electric actuator, if the power supply to the actuator is cut off due to a power outage in the factory, etc., the holding force of the drive motor inside the actuator will be lost, and the adjustment may not be maintained. valve opening...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/53F16K31/05
CPCF16K31/047F16K31/05F16K31/53F16H1/28F16K31/043F16K31/055F16H1/46F16K1/221F16K31/535
Inventor 大桥智文
Owner YAMATAKE HONEYWELL CO LTD