Valve Pressure Control Unit for Fire Extinguishing Systems
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Solution Overview
Problem
Existing automatic fire extinguishing systems face challenges in providing a simple, compact, and safe valve for pressure vessels that effectively manages pressure and reduces the risk of damage and safety hazards while maintaining system functionality.
Innovation Solution
A valve design featuring a valve housing with a pressure control unit that regulates the low pressure chamber relative to the vessel pressure, including a closing piston and control piston to manage pressure connections and prevent fluid leakage, allowing for reduced pressure in the sensor line and enhanced safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a valve is designed to manage high pressure in fire extinguishing systems, then pressure control capability is improved, but the risk of damage and safety hazards increases
Solution Approach 1:
The valve divides the pressure system into two separate chambers: a high-pressure chamber for storing fire extinguishing medium and a low-pressure chamber for the sensor line and triggering device. This segmentation allows each component to operate at appropriate pressure levels, reducing safety hazards while maintaining pressure control capability.
Solution Approach 2:
A pressure control unit acts as an intermediary between the high-pressure chamber and the low-pressure chamber. It regulates the pressure in the low-pressure chamber relative to the vessel pressure, enabling safe operation of triggering devices while maintaining connection to the high-pressure fire extinguishing system.
2Device complexity
If the valve structure is simplified to be more compact, then device complexity is reduced, but functionality may be compromised
Solution Approach 1:
The patent merges multiple functions into a single integrated valve structure: the closing piston serves as both a valve closure mechanism and a pressure equalization element; the pressure control unit combines pressure regulation with chamber separation. This merging achieves compactness without sacrificing functionality.
Solution Approach 2:
The closing piston performs multiple functions: it seals the valve output opening, equalizes pressure between chambers during filling, and can be actuated by pressure differential. The pressure control unit simultaneously separates chambers and regulates pressure. This multi-functionality reduces device complexity while maintaining full system functionality.
3Object-affected harmful factors
If pressure is reduced in the sensor line chamber, then safety risk is reduced, but pressure connection to the high-pressure vessel is compromised
Solution Approach 1:
The pressure control unit serves as an intermediary that maintains a controlled pressure relationship between the low-pressure chamber and the high-pressure vessel. It ensures the low-pressure chamber remains at reduced pressure for safety while maintaining functional pressure connection for triggering operations.
Solution Approach 2:
The pressure control unit dynamically adjusts the pressure in the low-pressure chamber based on the vessel pressure. This dynamic pressure management allows the system to maintain safety through pressure reduction while ensuring functional connectivity when needed for operation.
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 provides improved functionality, reduced risk of damage and safety hazards, and efficient operation by controlling pressure and preventing fluid leakage, ensuring the valve is simple, compact, and effective in managing pressure within the fire extinguishing system.
Implementation Method 1
the closing piston is movable between a closing piston closed position and a closing piston open position, wherein the closing piston in the closing piston closed position is arranged with the valve seat seal on the valve seat in a fluid-tight manner
Implementation Method 2
the control piston in the control piston closed position seals a pressure channel between the high pressure chamber and the low pressure chamber in a fluid-tight manner, and wherein the control piston in the control piston open position releases the pressure channel
Implementation Method 3
a pressure control unit in pressure connection with the valve input opening and the low pressure chamber for controlling a low pressure in the low pressure chamber relative to a vessel pressure of the pressure vessel
Implementation Method 4
the closing piston in the closing piston closed position is arranged with the valve seat seal on the valve seat in a fluid-tight manner, so that the valve output opening is sealed relative to the valve input opening
Data Source
AI summary
A valve for a pressure vessel of an automatic fire extinguishing system comprises a valve housing with a valve output opening for connecting an extinguishing line, a valve input opening for connecting the valve to the pressure vessel, a valve seat arranged between the valve output opening and the valve input opening, a low pressure chamber for connecting a triggering device and a high pressure chamber connectable with the low pressure chamber, wherein arranged in a the valve housing is a closing piston comprising a valve seat seal, which can be moved between a closing piston closed position and a closing piston open position, a pressure control unit in pressure connection with the valve input opening and the low pressure chamber for controlling the low pressure in the low pressure chamber relative to a vessel pressure of the pressure vessel and a control piston which can be moved between a control piston closed position and a control piston open position, wherein the closing piston is arranged in the closing piston closed position with the valve seat seal on the valve seat in a fluid-tight manner so that the valve output opening is sealed relative to the valve input opening, wherein the closing piston is arranged in the closing piston open position spaced apart from the valve seat, so that the valve output opening and the valve input opening are in pressure connection, wherein the control piston in the control piston closed position seals a pressure channel between the high pressure chamber and the low pressure chamber in a fluid-tight manner, and wherein the control piston in the control piston open position releases the pressure channel, so that the high pressure chamber and the low pressure chamber are in pressure connection.