Two-Stage Liquid Extinguishing System for Open Spaces
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Solution Overview
Problem
Current fire extinguishing systems for large or open spaces face challenges with synthetic extinguishing agents, as they require a tightly enclosed space, are not economically viable, and lack immediate effectiveness due to the need for evaporation at nozzles, which reduces their extinguishing power and requires a limited volume, making them inadequate for quick re-ignition scenarios.
Innovation Solution
A method using two separate liquid extinguishing agents supplied via a common pipe and nozzle system, where a synthetic extinguishing agent is initially discharged, followed by water if the fire persists, ensuring rapid and intense extinguishing action without the limitations of evaporation at the nozzle, utilizing a pressurized gas to enhance delivery and a pyrotechnic trigger for activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If synthetic extinguishing agents are used in gaseous form, then extinguishing effectiveness is improved, but the requirement for a tightly enclosed space increases system complexity and limits applicability to large open spaces
Solution Approach 1:
The patent changes the physical state parameter of the synthetic extinguishing agent from gaseous to liquid form. This allows the agent to be stored and transported in liquid state in large open spaces, then converted to gaseous state at the application point for effective extinguishing, thus resolving the contradiction between effectiveness and adaptability to open spaces
Solution Approach 2:
The synthetic extinguishing agent is pre-filled into the distribution pipes in liquid form before a fire event occurs. This preliminary action eliminates the need for on-site storage of large quantities of gaseous agent and allows rapid deployment in open spaces without requiring pre-installation of large storage vessels
2Device complexity
If synthetic extinguishing agents are stored in liquid form and evaporated at nozzles, then system complexity is reduced, but extinguishing power is weakened due to evaporation time requirements
Solution Approach 1:
The synthetic extinguishing agent is pre-filled into the distribution pipes in liquid form before a fire event occurs. This preliminary action eliminates the need for on-site storage of large quantities of gaseous agent and allows rapid deployment in open spaces without requiring pre-installation of large storage vessels
Solution Approach 2:
The system dynamically adjusts the state of the extinguishing agent based on operational requirements. The agent is stored as liquid for economical use in large spaces, then rapidly vaporized at the nozzle level during fire events to achieve quick extinguishing action, combining the advantages of both liquid and gaseous states
3Ease of manufacture
If water is used as extinguishing agent, then cost-effectiveness is improved, but harmful effects such as short-circuits and corrosion increase
Solution Approach 1:
The patent implements a two-stage extinguishing approach that segments the extinguishing process into primary and secondary stages. The synthetic agent handles the primary extinguishing task with minimal water usage, while water serves as a secondary backup, thereby reducing the harmful effects of water while maintaining cost-effectiveness
Solution Approach 2:
The synthetic extinguishing agent acts as an intermediary substance that enables the use of water in a controlled manner. By first deploying the synthetic agent to suppress the fire, the system creates conditions where water can be safely used as a secondary agent without causing significant harmful effects
4Object-generated harmful factors
If CO2 is used as extinguishing agent, then residue-free operation is improved, but safety risks to persons increase at low concentrations
Solution Approach 1:
The patent implements a two-stage extinguishing approach that segments the extinguishing process into primary and secondary stages. The synthetic agent handles the primary extinguishing task with minimal water usage, while water serves as a secondary backup, thereby reducing the harmful effects of water while maintaining cost-effectiveness
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 approach allows for quick and reliable fire extinguishment in large or open spaces with reduced agent usage, maintaining extinguishing effectiveness even after the initial synthetic agent is depleted, and minimizes material and system costs by leveraging the advantages of both synthetic and water-based extinguishing agents.
Implementation Method 1
the liquid synthetic extinguishing agent is discharged by way of the common pipe and the at least one nozzle
Implementation Method 2
the water or the water-based extinguishing agent is discharged by way of the common pipe and the at least one nozzle
Implementation Method 3
utilizing a pressurized gas to enhance delivery
Implementation Method 4
utilizing a pyrotechnic trigger for activation
Data Source
AI summary
A method for extinguishing objects or appliances, in which, once a fire signal has been detected at point in time t1, a first device (17) providing an extinguishing agent is triggered, for discharging a liquid synthetic extinguishing agent (14), via a separating device (8), a common conveying pipe (9) and at least one nozzle (10), and, once a second fire signal has been detected at point in time t2, a second device (18) providing an extinguishing agent is triggered for discharging water (3) or a water-based extinguishing agent via the separating device (8), the common conveying pipe (9) and the at least one nozzle (10) for extinguishing. A system is also provided for extinguishing objects or appliances.