Valve Flutter Detection Using Electrical Continuity Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Valve flutter and chatter in pneumatic applications are difficult to capture due to their low magnitude and high frequency, which standard instrumentation and camera tools struggle to detect effectively.
Innovation Solution
A system that includes a valve circuit with a voltage source, a valve stop, a valve pin, and a valve flap, where a meter measures electrical characteristics to determine the valve's position, specifically whether it is fully open or not, to detect flutter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard instrumentation or camera tools are used to detect valve flutter, then the device complexity is low, but the measurement precision is insufficient due to low sensitivity at high frequencies
Solution Approach 1:
The patent replaces mechanical measurement instruments and camera tools with an electrical sensing system. The valve flap itself becomes part of an electrical circuit, and its position is detected through electrical continuity changes rather than mechanical sensors, achieving high-frequency detection capability while maintaining system simplicity
Solution Approach 2:
The patent introduces an electrical circuit as an intermediary between the valve flap and the detection system. The circuit acts as a mediator that translates mechanical position into electrical signals, enabling precise measurement of valve flutter without requiring complex instrumentation
2Measurement precision
If electrical continuity measurement is used to detect valve position, then the measurement precision is high, but the device complexity increases due to additional wiring and circuit components
Solution Approach 1:
The patent merges the valve flap with the electrical circuit by making the flap itself a conductive element that forms part of the circuit path. This integration eliminates the need for separate sensors and wiring harnesses, achieving precise position detection while minimizing additional complexity
Solution Approach 2:
The valve flap serves multiple functions: it controls fluid flow as a mechanical component and simultaneously acts as an electrical conductor for position sensing. This multi-functionality reduces the need for separate components, thereby reducing overall system complexity while maintaining high measurement precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system allows for high-frequency, high-accuracy detection of valve flutter, providing binary position sensing and enabling the differentiation between intended and unintended valve positions.
Implementation Method 1
the valve flap and a valve stop configured to define a maximum open position for the valve flap... the valve flap and the valve stop configured to create a closed valve circuit when the valve flap is in the fully open position with the valve flap contacting the valve stop
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In accordance with at least one aspect of this disclosure, a system includes a first wire (218) configured to electrically connect a valve stop (112A, 112B) to a voltage source (222), a second wire (224) configured to connect a valve pin (108) to a negative terminal of the voltage source (222), such that the valve stop (112A, 112B), and a valve flap (110) operatively connected to the valve pin (108) are configured to create a closed valve circuit when the valve flap (110) is in a fully open position with the valve flap (110) contacting the valve stop (112A), and an open valve circuit when the valve flap (110) is not in the fully open position. A meter (228) is operatively connected to measure an electrical characteristic of the valve circuit to determine when the valve flap (110) is in the fully open position based on an open/closed status of the valve circuit.