Valve Actuator Position Indicator Extension for Overhead Visibility
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Solution Overview
Problem
Valve actuators often installed in inaccessible locations pose challenges for service technicians to determine the position of the actuator during commissioning, troubleshooting, and servicing, increasing time and complexity due to poor visibility.
Innovation Solution
A valve actuator assembly with an extendable indicator that can be extended to improve visibility from various vantage points, including a rotatable member with an extendable indicator arm that can be retracted or extended to provide clear positioning cues, even when the top portion of the housing is not visible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If valve actuators are installed in inaccessible locations (overhead, within walls, behind equipment), then space utilization is improved, but visibility and accessibility for determining actuator position deteriorates
Solution Approach 1:
The indicator arm extends in a lateral direction perpendicular to the main actuator housing, projecting the position information from the top surface to a side view that is visible from below. This dimensional transformation allows technicians to observe actuator position from ground level without needing to access the overhead installation location.
Solution Approach 2:
The indicator arm serves as an intermediary element that transfers position information from the rotatable member (which is difficult to observe) to a visible location. The arm extends laterally to project the rotational position of the internal components outward, making the position information accessible without direct observation of the internal mechanisms.
2Adaptability or versatility
If valve actuators are installed in cramped spaces within walls or behind equipment, then installation versatility is improved, but serviceability and troubleshooting complexity increases
Solution Approach 1:
The indicator arm automatically moves and positions itself based on the rotational position of the rotatable member, providing continuous visual feedback without requiring manual intervention. The arm's position self-indicates the valve state, eliminating the need for technicians to manually check or interpret complex internal mechanisms during servicing.
Solution Approach 2:
The indicator arm incorporates visual indicators (such as colored markings or contrasting colors) that change position or orientation to clearly indicate different valve states. This visual differentiation makes it easier to quickly determine valve position during troubleshooting without requiring detailed technical knowledge or complex diagnostic procedures.
3Adaptability or versatility
If the actuator is installed overhead with only the base visible, then installation adaptability is improved, but position determination time increases
Solution Approach 1:
The indicator arm projects position information from the vertical top surface to a horizontal lateral extension that is visible from below. This allows technicians to determine actuator position from ground level without needing to physically access or approach the overhead installation location, significantly reducing position determination time.
Solution Approach 2:
The indicator arm is pre-configured to automatically reflect the rotatable member's position, so the position information is already prepared and visible before the technician needs to check it. This eliminates the need for the technician to manually inspect or calculate valve position, providing immediate visual feedback.
Data Source
AI summary
A valve actuator assembly includes a rotatable member carrying an extendable indicator arm. The extendable indicator arm may be moveable between a retracted position and an extended position. When the extendable indicator arm is in the extended position, the extendable indicator arm may extend laterally past side walls of the actuator housing of the valve actuator assembly, such that the extendable indicator arm is visible from a location below the valve actuator assembly.