Valve Actuator Pressure Balancing via Segmented Membranes
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Solution Overview
Problem
Existing valve devices for controlling fluid or gaseous media face challenges in maintaining control accuracy due to pressure fluctuations, which affect the valve lift and flow regulation.
Innovation Solution
The introduction of a second radial membrane and a central connecting element with a compensating channel, which balances pressure fluctuations and ensures the valve member is axially guided without contact, enhancing control accuracy by equalizing pressure on both sides of the valve member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single membrane is used to guide the valve member axially without contact, then friction-free actuation is achieved, but pressure fluctuations affect valve lift and control accuracy
Solution Approach 1:
The single membrane is divided into two separate membranes (first membrane and second membrane). The first membrane is acted upon by medium pressure at the valve inlet, while the second membrane is acted upon by medium pressure at the valve outlet. This segmentation allows each membrane to independently balance pressure from different sides, eliminating the effect of pressure fluctuations on valve lift while maintaining friction-free actuation through the membranes.
2Manufacturing precision
If the valve member is pressure-balanced with regard to medium pressure at valve inlet and/or outlet, then control accuracy is improved, but pressure fluctuations still influence valve lift
Solution Approach 1:
The patent applies a counterbalancing pressure mechanism where the second membrane, acted upon by medium pressure at the valve outlet, creates an opposing force to balance the pressure fluctuations acting on the first membrane. The compensating channel equalizes pressures on both sides of the valve member, creating a counterweight effect that stabilizes valve lift against pressure variations while maintaining precise 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
This solution significantly improves control accuracy and reduces the impact of pressure fluctuations on valve lift, allowing for precise and friction-free actuation of the valve member, resulting in enhanced control over the flow of media.
Implementation Method 1
the valve member being centered and guided axially without contact by means of a first membrane, which acts centrally on the valve member
Implementation Method 2
an electromagnetic actuator which has an armature which works on the valve member
Data Source
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AI summary
The device has a valve body (11) with a valve casing (13), an inlet valve (15) and a valve outlet (17) which are interconnected on a valve opening (19) with the valve seat (22) in conjunction with a seat to regulate the fluid flow through the valve opening. The loaded valve actuator (24) is closed with an electromagnetic actuator (60). The valve actuator (24) has an armature (61) which is non-axially led. The valve actuator (24) is pressurized in relation to the opening at the inlet valve (15) and or valve outlet.