Pressurized Air Vent Valve With Controlled Closure Against Hammering
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Solution Overview
Problem
Existing hydraulic valves lack a controlled closing mechanism that efficiently manages fluid passage opening and closing, leading to unstable operation and potential hammering issues due to always-open fluid passages.
Innovation Solution
A controlled closing system is introduced, featuring a movable seal that controls the fluid passage between the inlet and control chambers, allowing for slower and more controlled closure while maintaining immediate response capabilities, utilizing a sealable opening mechanism within the fluid passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an always-open fluid passage is used between inlet chamber and control chamber, then the valve structure is simple, but the valve operation becomes unstable and hammering issues occur
Solution Approach 1:
The fluid passage is transformed from a static always-open configuration to a dynamic controlled configuration. A movable seal (piston or plug) is introduced that can shift positions based on pressure differential, dynamically opening or closing the fluid passage between inlet chamber and control chamber as needed for stable operation
Solution Approach 2:
A movable seal acts as an intermediary element between the inlet chamber and control chamber. This seal controls the fluid passage opening and closing, mediating the pressure equalization process to prevent hammering while maintaining operational stability
2Reliability
If a movable seal is introduced to control fluid passage opening and closing, then valve operation stability improves, but device complexity increases
Solution Approach 1:
The movable seal is designed to automatically respond to pressure differential between inlet chamber and control chamber. When pressure in inlet chamber exceeds control chamber pressure, the seal is forced to close the fluid passage, and vice versa. This self-actuating mechanism provides stable operation without requiring external control systems
Solution Approach 2:
The movable seal is actuated by pressure differential forces from the hydraulic system itself. The pressure differential between inlet chamber and control chamber directly drives the seal movement, using the system's own hydraulic pressure to control the fluid passage opening and closing
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 solution stabilizes valve operation by ensuring controlled fluid passage management, reducing hammering and enhancing the overall performance of hydraulic valves by allowing for precise control over fluid flow.
Implementation Method 1
In operation, the pressure differential between the inlet chamber and the control chamber forces the movable seal to seal or open the fluid passage
Implementation Method 2
A rolling membrane is clamped at one end thereof 76 to the plunger assembly 70 and at another end thereof 78 it is clamped to a portion fixed within inside walls of the housing
Data Source
AI summary
A valve with a controlled closing system includes housing having an inlet port, a liquid outlet port, and an inlet chamber. A pressure responsive closing mechanism is disposed between the inlet port and the liquid outlet port. A control chamber is in fluid communication with the inlet chamber via a fluid passage. The fluid passage includes a controlled closing system for controlling opening and closing of the fluid passage. The controlled closing system includes a seal movable with respect to and sealable against an opening of the fluid passage.