Non-Return Valve Cassette for Higher Residual Pressure Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing one-way valve devices with non-return valve mechanisms struggle to retain residual pressure without increasing the device's size, as they rely on larger springs for higher pressure retention, which limits their compactness and efficiency.
Innovation Solution
A non-return valve mechanism is integrated into a one-way valve device with a regulator valve that moves between open and closed positions, utilizing a biasing member with a spring force to control fluid flow. The valve design includes distinct areas for pressure reception, allowing the regulator valve to move against the spring force when upstream pressure exceeds a threshold, maintaining residual pressure without upsizing by using differential pressure calculations to determine the necessary spring force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a larger spring with larger spring force is used to increase the predetermined pressure of the fluid remaining in the container, then the residual pressure retention is improved, but the non-return valve mechanism and container valve become larger
Solution Approach 1:
The regulator valve is designed with non-uniform cross-sectional area along its length, with a larger area at the upstream end and a smaller area at the downstream end. This creates different pressure reception areas that generate a pressure differential force, allowing the valve to respond to pressure changes without requiring a large spring force, thus maintaining compact dimensions while achieving higher residual pressure retention
Solution Approach 2:
The valve mechanism is designed to close automatically when the upstream pressure decreases to a predetermined level, retaining the residual pressure in the container without requiring continuous external control or large biasing forces. The pressure differential acting on the regulator valve initiates the closing action preemptively
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
This design effectively retains residual pressure at a predetermined level without increasing the device's size, ensuring sufficient fluid flow rates and preventing equipment malfunction due to reduced pressure, while also incorporating a safety valve mechanism to manage overpressures and prevent damage.
Implementation Method 1
a biasing member with a spring force to bias the regulator valve in a valve-closing direction from the valve-open position to the valve-closed position
Implementation Method 2
The regulator valve includes, in an area of the regulator valve at the valve-closed position communicating with an upstream space, a valve-closing directional end for receiving a pressure in the valve-closing direction and having a smaller projected area in an opening and closing direction than a valve-opening directional end for receiving a pressure in the valve-opening direction
Data Source
AI summary
A one-way valve device or a non-return valve mechanism in the valve device provides a higher retaining residual pressure without upsizing. A non-return valve cassette in a consumption valve device regulates gas flow. The cassette includes a check valve movable forward and backward between a valve-closed position and a valve-open position in an outlet secondary flow channel and movable backward to the valve-open position under pressure of the gas flowing upstream, and a first coil spring with a spring force biasing the check valve upstream. The first coil spring permits the check valve to move downstream against the upstream biasing when an upstream pressure is a predetermined pressure or greater. The check valve includes a downstream end smaller than an upstream end in an area communicating with an upstream space at the valve-closed position.