Diaphragm Overpressure Shutoff for Simplified Gas Flow Blocking
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Solution Overview
Problem
Existing gas storage device protective devices, such as overflow valves, have complex structures and high production costs, making them undesirable for consumers and producers.
Innovation Solution
An overpressure shutdown device utilizing an elastic diaphragm, rod, and flow-stopping piece to block fluid flow with a single axial movement, eliminating the need for multiple axial mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional overflow valves with multiple axial linkage mechanisms are used, then reliable fluid flow control is achieved, but device complexity and production cost increase
Solution Approach 1:
The patent combines multiple valve functions (overflow control, overpressure protection, and flow shutdown) into a single integrated valve body with one unified axial movement mechanism. The single piston performs all control functions simultaneously, eliminating the need for multiple separate axial linkage mechanisms while maintaining reliable fluid flow control across all operational scenarios.
Solution Approach 2:
The single piston is designed to perform multiple functions: controlling overflow at the overflow outlet, preventing overpressure in the pressure chamber, and shutting down flow to the outlet chamber. This multi-functional design eliminates the need for separate mechanisms for each function, reducing overall device complexity while maintaining comprehensive protection capabilities.
2Reliability
If conventional overflow valves with multiple axial linkage mechanisms are used, then comprehensive protection functions are achieved, but production cost increases
Solution Approach 1:
The patent merges multiple protection functions into a single valve assembly with one piston, reducing the number of parts that need to be manufactured and assembled. This integration significantly lowers production costs by eliminating complex multi-mechanism assemblies while maintaining complete protection functionality for overflow, overpressure, and flow shutdown scenarios.
3Reliability
If conventional overflow valves with multiple axial linkage mechanisms are used, then various protection functions are achieved, but device volume increases
Solution Approach 1:
The patent combines multiple protection mechanisms into a single compact valve body where one piston performs all control functions. This integration dramatically reduces the overall valve volume by eliminating the space required for multiple separate axial linkage mechanisms and their associated components, while maintaining complete protection functionality.
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 achieves effective fluid obstruction and return functions with a simplified structure, reducing complexity and cost while preventing gas leakage during overpressure conditions.
Implementation Method 1
the increased pressure will cause the elastic diaphragm to expand and rise
Data Source
AI summary
An overpressure shutdown device includes a main body having an inlet chamber and an outlet chamber, with a communication hole communicating therebetween. The main body has a combined hole communicating with the outlet chamber. A circular groove is recessed around the combined hole. A cover and an elastic diaphragm are installed in the circular groove. The elastic diaphragm is located between the circular groove and the cover. The cover includes an opening. A return button is located inside the cover and corresponds to the opening. A flow-stopping piece is located at the position where the inlet chamber is located corresponding to the communication hole. A rod extends through the elastic diaphragm, and is connected to the return button and the flow-stopping piece. When the air pressure becomes unstable, the elastic diaphragm rises, driving the rod upwards, thereby blocking the communication hole with the flow-stopping piece.