Electromagnetic Impact Valve Coupling for Stable Pneumatic Pressure
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Solution Overview
Problem
Conventional electromagnetic impact valve arrangements require continuous switching between pressure increase and reduction to maintain a specific actuating pressure or volume flow, leading to constant pneumatic compressed air loss and high energy consumption.
Innovation Solution
An electromagnetic impact valve arrangement with two independent electromagnetic impact valves, one for the air supply channel and one for the venting channel, allows for simultaneous control of both channels to maintain constant pressure and reduce energy consumption by preventing air escape and optimizing pneumatic actuator control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional electromagnetic impact valve arrangements continuously switch between pressure increase and reduction to maintain specific actuating pressure or volume flow, then the actuating pressure control is achieved, but constant pneumatic compressed air loss and high energy consumption occur
Solution Approach 1:
The valve arrangement is segmented into two independent electromagnetic impact valves: a first impact valve for the air supply channel and a second impact valve for the vent channel. This segmentation allows each valve to be controlled independently, enabling precise control of air supply and venting separately, thereby maintaining constant actuating pressure without continuous switching and reducing compressed air loss.
Solution Approach 2:
The air supply channel is opened in advance before actuating pressure is required, and the vent channel is closed beforehand. This preliminary action eliminates the need for continuous switching between pressure increase and reduction, as the system maintains constant pressure through pre-established channel configurations, significantly reducing pneumatic energy loss.
2Device complexity
If conventional electromagnetic impact valve arrangements use a single impact valve element for both air supply and venting channels, then device complexity is reduced, but precise control under varying operating conditions is compromised
Solution Approach 1:
The single impact valve element is segmented into two independent impact valve elements: a first impact valve element for the air supply channel and a second impact valve element for the vent channel. Each element can be actuated independently by its own electromagnetic coil, allowing precise control adaptation to varying operating conditions while maintaining relatively simple device structure.
Solution Approach 2:
Each impact valve element is designed with universal functionality to control its respective channel (air supply or venting) independently. This multi-functionality allows the system to adapt to various operating conditions by selectively actuating either valve or both, achieving precise control without significantly increasing device complexity.
3Force
If electromagnetic impact valve arrangements require specific actuating pressure to generate specific actuating force, then valve control is achieved, but continuous pressure switching leads to constant air loss
Solution Approach 1:
The air supply channel is opened in advance to establish the required actuating pressure before it is needed for actuation. This preliminary pressure establishment eliminates the need for continuous pressure switching, allowing the valve to generate required actuating force while maintaining constant pressure and minimizing compressed air consumption.
Solution Approach 2:
The system dynamically controls the two impact valve elements to maintain constant actuating pressure through coordinated opening and closing actions. By dynamically adjusting the valve states rather than continuously switching pressure, the system generates required actuating force while minimizing compressed air loss.
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 enables precise control of pneumatic actuators with reduced energy demand, maintaining constant actuating pressure and volume flow while minimizing compressed air consumption, even in varying operating conditions.
Implementation Method 1
An electromagnetic actuator moves the impact valve element between two operating positions, in each of which one of the air channels is closed
Implementation Method 2
the solenoid valve has a force-actuating element, such as a spring, which forces the impact valve element in an axial direction into a closed position to close one of the air channels
Data Source
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AI summary
Electromagnetic impact valve arrangement for a pneumatically operated field device, in particular an actuator, of a process plant, such as a chemical plant, a food processing plant, a power plant or the like, comprising an air chamber into which three air channels open, wherein the three air channels comprise an air supply channel for receiving compressed air from a compressed air supply source, a control air channel for venting and de-venting a pneumatic actuator of the field device and a venting channel for releasing compressed air to a pressure sink, such as the atmosphere;wherein the impact valve arrangement comprises a first electromagnetic impact valve ("ventilation impact valve") for opening and/or closing the air supply duct and a second electromagnetic impact valve ("venting impact valve") for opening and/or closing the venting duct, wherein the first impact valve and the second impact valve are electromagnetically coupled to each other.