Temperature-Sensitive Valve for Automatic Gas Flow Interruption
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Solution Overview
Problem
Existing gas-supplied devices face challenges in automatically interrupting fuel gas flow when exposed to elevated temperatures, as current solutions lack effective temperature-sensitive mechanisms to safely manage gas flow in high-temperature conditions.
Innovation Solution
A temperature-sensitive fluid flow interruption device comprising an elongated housing, a displacement member, a spring, and a retention cap, which engages with a poppet or Schrader valve to control gas flow based on temperature, allowing the valve to open below a predetermined temperature and close above it, ensuring safe operation by interrupting gas supply when temperatures become undesirable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a temperature-sensitive fluid flow interruption device is integrated with a poppet valve, then gas flow can be automatically interrupted when temperatures exceed safe limits, but the device complexity increases due to additional components such as displacement members, springs, and retention caps
Solution Approach 1:
The displacement member is made of temperature-sensitive material that automatically changes its engagement with the elongated channel in response to temperature changes, eliminating the need for external sensors or control systems. The spring provides automatic reset functionality, allowing the device to return to its operational state after temperature normalization without manual intervention.
Solution Approach 2:
The displacement member acts as an intermediary between the temperature environment and the poppet valve. It translates temperature changes into mechanical displacement, which directly controls the valve opening and closing, providing a simple yet effective coupling mechanism between thermal input and flow control output.
2Ease of repair
If the displacement member is made removable and operatively engaged with the spring, then ease of repair and maintenance improve, but the reliability may be affected by potential loosening or disengagement over time
Solution Approach 1:
The retention cap provides a dynamic yet secure connection between the displacement member and spring. The cap can be easily removed for maintenance but provides positive engagement during operation, balancing accessibility with reliability through a simple locking mechanism that prevents unintended disengagement.
3Loss of substance
If the device is designed to be re-usable after functioning to interrupt fluid flow, then loss of substance is reduced, but the device may accumulate wear and degradation from thermal and mechanical cycling
Solution Approach 1:
The device is designed for recovery and reuse after thermal events. The removable retention cap and modular components allow for easy inspection, cleaning, and replacement of worn parts, enabling the device to be recovered and returned to service after interrupting flow during temperature excursions.
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 device effectively manages gas flow by automatically interrupting supply when temperatures exceed safe limits, preventing potential hazards and ensuring safe operation of gas-supplied devices, even in extreme conditions.
Implementation Method 1
The elongated displacement member may be engaged with the elongated first channel in a manner determined by the temperature of the temperature-sensitive fluid flow interruption device with respect to a predetermined temperature
Data Source
AI summary
Provided is a temperature-sensitive fluid flow interruption device for use in operational connection with a normally-closed poppet openable by overcoming a closure force. The device may comprise an elongated housing, an elongated displacement member, a spring, and a retention cap. An elongated housing may comprise an elongated first channel. An elongated displacement member may be engaged with said elongated first channel and may comprise a longitudinal axis, a first spring retention surface, and a poppet engageable end. The poppet engageable end may be adapted for engagement with said poppet and may be engaged with the housing in a manner determined by the temperature of the temperature-sensitive fluid flow interruption device with respect to a predetermined temperature. A spring may be engaged with the first retention surface. A retention cap may be engaged with the housing and may comprise a second retention surface engaged with the spring.