Fire-Extinguishing Control Line Safety Valve for Vibration-Proof Sealing
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Solution Overview
Problem
Existing fire-extinguishing installation control systems face issues with unintentional triggering due to leaks in closed pressure accumulators, which can lead to pressure buildup in control lines, and known safety devices are prone to malfunctioning when installed at angles or under vibrating conditions.
Innovation Solution
A control system with a safety device featuring a pressure equalization chamber and a movable closure element, where the closure element is displaced between two terminal positions by a restoring force, independent of gravity, allowing for reliable sealing and pressure maintenance in the control line, even when the device is installed upright, inverted, or at an angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a faulty pressure safeguard is used to prevent unintentional triggering, then safety against pressure buildup is improved, but the device requires upright installation and is prone to malfunctioning under vibrating conditions
Solution Approach 1:
The patent replaces the gravity-dependent mechanical closure element with a magnetic field-based holding mechanism. The holding element generates a magnetic field that acts on the closure element, enabling it to be held in the closed position against pressure forces without requiring gravitational force. This substitution allows the safety device to function reliably in any installation position and under vibrating conditions.
Solution Approach 2:
The patent changes the physical parameter used for holding the closure element from gravitational force to magnetic field strength. By controlling the magnetic field parameters (strength, direction, distribution), the closure element can be reliably held in the closed position regardless of installation orientation or vibration, thus improving adaptability while maintaining safety.
2Device complexity
If a closure element returning exclusively on account of gravity is used, then the device structure is simplified, but the device cannot function independently of installed position
Solution Approach 1:
The patent replaces the gravity-dependent mechanical closure element with a magnetic field-based holding mechanism. The holding element generates a magnetic field that acts on the closure element, enabling it to be held in the closed position against pressure forces without requiring gravitational force. This substitution allows the safety device to function reliably in any installation position and under vibrating conditions.
Solution Approach 2:
The patent changes the physical parameter used for holding the closure element from gravitational force to magnetic field strength. By controlling the magnetic field parameters (strength, direction, distribution), the closure element can be reliably held in the closed position regardless of installation orientation or vibration, thus improving adaptability while maintaining safety.
3Stability of the object's composition
If the restoring force is increased to prevent closure element displacement under vibration, then stability is improved, but the valve may fail to open when actuation pressure is applied
Solution Approach 1:
The patent changes the physical parameter used for holding the closure element from gravitational force to magnetic field strength. By controlling the magnetic field parameters (strength, direction, distribution), the closure element can be reliably held in the closed position regardless of installation orientation or vibration, thus improving adaptability while maintaining safety.
Solution Approach 2:
The magnetic holding force is designed to be dynamically adjustable through the holding element, allowing it to provide strong restoring force during normal operation to prevent vibration-induced displacement, while yielding when actuation pressure exceeds a predetermined threshold. This dynamic characteristic ensures both stability and reliable actuation.
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 solution ensures that the control line remains unpressurized in passive operation and maintains control pressure during activation, preventing unintended actuations and ensuring reliable operation regardless of the safety device's position, with the ability to handle pressures up to 300 bar.
Implementation Method 1
the holding element is configured for exerting on the closure element a restoring force in the direction of the first terminal position
Data Source
AI summary
The invention relates to a control system (10) of a fire-extinguishing installation, having at least one control line (11) for controlling a controlling procedure of the fire-extinguishing installation, wherein the control line (11) in a passive operation is unpressurized and the control line (11) in a control operation is impinged with a control pressure, and a safety device (12), fluidically connected to the control line (11), having a pressure equalization chamber (13) in which a holding element (3) and a movable closure element (2) are disposed.It is proposed that the closure element (2) is disposed in the pressure equalization chamber (13) so as to be displaceable between a first terminal position and a second terminal position, and the holding element (3) is configured for exerting on the closure element (2) a restoring force in the direction of the first terminal position, wherein the restoring force on the closure element (2) in the second terminal position of the closure element (2) is higher than the weight force of the closure element (2), and in the first terminal position of the closure element (2) is lower than a pressure force that in the control operation acts as a function of the control pressure on the closure element (2).