Gas Spring Supply System Throttle Valve Feedback Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vibration isolation systems using gas springs face challenges with increased pressure leading to leakage and inherent noise due to vortices in gas flow, and pressure fluctuations from gas pumps, which are not effectively addressed by existing technologies.
Innovation Solution
A compressed gas supply system featuring a gas flow control device with a tappet-like valve element and a throttle mechanism that maintains a constant gas volume flow by adjusting the throttle effect based on pressure changes, absorbing pressure waves to reduce noise and fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If increased pressure is applied to the gas spring to support heavy loads, then the load-bearing capacity is improved, but leakage flow and inherent noise increase
Solution Approach 1:
The control valve incorporates a feedback mechanism where the differential pressure between the inflow chamber and outflow chamber acts on the throttle piston, which is coupled to the valve element. When pressure in the gas spring increases, the feedback through the supply line increases the differential pressure, causing the valve element to close and reduce the throttle opening, thereby compensating for the pressure increase and reducing leakage flow and noise.
Solution Approach 2:
The system dynamically changes the throttle parameter (opening size) based on the pressure conditions in the gas spring. The throttle piston responds to differential pressure changes by adjusting the valve element position, thereby changing the throttle opening parameter to maintain optimal flow conditions across varying pressure levels.
2Productivity
If gas pumps are used to generate compressed gas, then the gas supply is improved, but pressure fluctuations and pulsations are introduced
Solution Approach 1:
The control valve uses feedback from the differential pressure between inflow and outflow chambers to automatically adjust the throttle opening. This feedback mechanism counteracts pressure fluctuations and pulsations from the gas pump, maintaining stable pressure in the gas spring by varying the throttle opening in response to pressure changes.
Solution Approach 2:
The valve element is resiliently mounted and dynamically adjusts its position in response to changing pressure conditions. The throttle piston couples the differential pressure to the valve element, creating a dynamic system that automatically adapts to pressure variations from the gas pump without requiring external control.
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 system effectively corrects pressure fluctuations and reduces inherent noise in gas springs, maintaining a stable gas volume flow and minimizing vibration excitation, even under high pressures required for heavy loads.
Implementation Method 1
the thickening forms a piston on which the differential pressure between the inflow chamber and outflow chamber of the valve is applied
Implementation Method 2
Pressure waves emanating from the gas spring, which propagate through the supply line to the outflow chamber of the control valve, are largely absorbed there
Data Source
Figure 1
Figure 2
AI summary
The gas supply system for gas springs in vibration damping systems has a throttle valve (6) between the gas tank and spring. A piston (69) closes the channel (72) between a gas inlet (61) and outlet (62) in the valve when pressure in the inlet drops. An independent claim is included for fine adjustment of a pulsing gas stream to gas springs using the supply system.