Direction Selective Unidirectional Clutch for Fluid Meter Counter
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Solution Overview
Problem
Existing gas meters are limited in their ability to adapt to changing flow directions, as they are typically configured to count flow in only one direction at installation, making them less versatile for installations where flow direction may need to be reversed.
Innovation Solution
A direction selective unidirectional clutch assembly that includes a drive selector mechanism to couple a direction selection drive shaft to a unidirectional clutch, allowing the counter module to count in either direction by selectively engaging and disengaging the clutch based on the flow direction, using a combination of gears to move between positions and activate the counter module accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a unidirectional clutch assembly is configured to count flow in only one direction at installation, then the counting accuracy for that specific direction is improved, but the adaptability to changing flow directions deteriorates
Solution Approach 1:
The clutch assembly incorporates a selectable mechanism that allows the counting direction to be dynamically changed between forward and reverse directions. The drive selector mechanism enables the system to switch between different counting modes based on installation requirements, transforming a static unidirectional clutch into a dynamically adaptable system that maintains counting accuracy for the selected direction while providing versatility for different flow directions.
Solution Approach 2:
The clutch assembly is designed to perform multiple functions by incorporating a drive selector mechanism that can configure the counting direction to match either forward or reverse flow. This universal design allows a single clutch assembly to serve installations with different flow directions, eliminating the need for separate dedicated clutches for each direction and enhancing overall system versatility.
2Device complexity
If a unidirectional clutch assembly is designed with fixed counting direction, then the device complexity is reduced, but the ease of operation for different installations deteriorates
Solution Approach 1:
The drive selector mechanism is pre-configured with selectable positions for different counting directions. During installation, the operator can preliminarily select the appropriate counting direction configuration before operation begins. This preliminary action allows the system to be easily adapted to different installations without requiring complex modifications or reconfigurations, improving ease of operation while maintaining manageable device complexity.
Data Source
AI summary
A direction selective unidirectional clutch assembly for a fluid meter counter module assembly is characterized by a drive selector mechanism to couple a direction selection drive shaft to a unidirectional clutch to select one of a first flow direction and a second flow direction of flow of the fluid to drive a counter module. The direction selection draft is coupled to a rotating member (e.g. impeller) driven by flow of the fluid and rotates in a direction that is responsive to the direction of rotation of the rotating member. A pair of gears are mounted to slide along the direction selection draft between a first position and a second position. A direction changing gear is mounted at the second position. Further provided is a flow meter with a direction selective unidirectional clutch assembly.