Valve Pop Indicator for Fast Overpressure Activation Detection
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Solution Overview
Problem
It is difficult to determine whether a pressure relief valve has been activated due to overpressure, and thus needs to be replaced or if a bleed-off operation is required in systems, as existing methods are time-consuming and inefficient.
Innovation Solution
A visual indicator system comprising a main body with a piston and O-rings that moves outwardly when pressure exceeds a threshold, providing a clear indication of overpressurization, which can be coupled to pressure relief valves or solenoid valves to signal activation or the need for pressure reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional pressure relief valves are used without visual indicators, then the device complexity is reduced, but it becomes difficult and time-consuming to identify whether the valve has been activated
Solution Approach 1:
The patent employs visual indicators that change appearance or position to signal valve activation. The indicator includes elements that are visible in different states, allowing operators to quickly determine whether the pressure relief valve has been activated without complex instrumentation or time-consuming inspection procedures.
Solution Approach 2:
The indicator system is self-actuating through the mechanical movement of the valve stem. As the valve stem moves in response to pressure changes, it directly drives the indicator mechanism, eliminating the need for external power sources, sensors, or complex control systems while still providing clear visual feedback.
2Difficulty of detecting and measuring
If a piston and O-ring mechanism is added to provide visual indication, then the ability to detect valve activation is improved, but the device complexity increases
Solution Approach 1:
The patent introduces an indicator as an intermediary element between the pressure relief valve and the operator. This indicator translates the mechanical movement of the valve stem into clear visual signals, making the valve's activation state easily detectable without requiring the operator to directly observe or measure the valve's internal state.
Solution Approach 2:
The indicator mechanism is divided into distinct functional components including the piston, O-ring, and visual indication elements. This segmentation allows each component to perform its specific function efficiently while maintaining overall system simplicity. The piston provides mechanical movement, the O-ring provides sealing and friction, and the visual elements provide clear signaling.
3Loss of information
If the piston is designed to move outwardly against O-ring friction, then the visual indication of overpressurization is provided, but the force required to move the piston increases
Solution Approach 1:
The patent carefully balances the friction force provided by the O-ring to ensure it is sufficient to hold the piston in its initial position under normal operating conditions but allows the piston to move when overpressure occurs. The O-ring's friction characteristic acts as a threshold mechanism, changing the force resistance based on the pressure differential across the piston.
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 indicator system provides a quick and visual means to determine if a pressure relief valve has been activated, facilitating timely replacement or pressure reduction, thereby enhancing system safety and efficiency.
Implementation Method 1
a friction force created by the O-ring
Implementation Method 2
the increased pressure causes the piston to move in a direction outwardly from the main body and against a friction force
Data Source
AI summary
An indicator adapted to provide a visual indication of an over pressure situation in a system. The indicator (also referred to as a pop indicator), includes a main body, a piston that is disposed in the main body, and one or more O-rings disposed around the piston. Initially, the piston is in a first position where the piston is retracted into the body. However, when an over pressure situation occurs, the pressure causes the piston to move in a direction out of the main body against a friction force created by the O-ring. When the piston is moved, i.e., popped, then end of the piston extending out of the body provides a visual indication.