Monitored Fire Suppression Assembly with Flow Detection
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Solution Overview
Problem
Existing fire suppression systems often cause unnecessary water damage due to uncontrolled water flow from broken pipes or malfunctioning sprinklers, as they lack effective mechanisms to differentiate between fire suppression and non-emergency situations.
Innovation Solution
A monitored fire suppression assembly comprising a control valve, flow detector, release valve, and alarm panel that decouples the water supply from the piping network during non-emergency situations, while reactivating it for fire suppression, utilizing a switch and plug mechanism in each sprinkler to trip the alarm upon fire detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the water supply remains connected to the piping network for rapid fire suppression, then fire response time is improved, but unnecessary water damage occurs during non-emergency situations
Solution Approach 1:
The control valve is positioned in advance to automatically close and isolate the water supply from the piping network when non-emergency conditions are detected (such as water flow without sprinkler activation), preventing water damage before it occurs. This preliminary protective action maintains readiness for rapid fire response while preventing false water discharge.
Solution Approach 2:
The alarm panel serves as an intermediary device that receives signals from both the flow detector and sprinkler switches, processes the information to determine the nature of the event, and controls the control valve accordingly. This intermediary intelligence layer differentiates between genuine fire emergencies requiring water discharge and non-emergency situations requiring water isolation.
2Object-affected harmful factors
If the system automatically cuts off water supply during non-emergency situations, then water damage prevention is improved, but fire suppression capability may be delayed
Solution Approach 1:
The control valve remains in an open position by default, maintaining water flow readiness for immediate fire suppression. The valve only closes when the alarm panel definitively identifies non-emergency conditions through processed signals from flow detectors and sprinkler switches, ensuring that water supply is cut off only when safely determined to be necessary.
Solution Approach 2:
The alarm panel continuously monitors signals from flow detectors and sprinkler switches, providing real-time feedback to determine whether to maintain or close the control valve. This feedback mechanism ensures that water supply isolation decisions are based on current system status and confirmed non-emergency conditions, preventing unnecessary delays in genuine fire emergencies.
3Measurement precision
If flow detection is implemented to detect water movement, then non-emergency detection capability is improved, but false alarms from actual fire suppression may occur
Solution Approach 1:
The alarm panel combines and cross-references signals from multiple sources: flow detector signals indicating water movement, and sprinkler switch signals indicating actual sprinkler activation. By merging these detection mechanisms, the system can distinguish between water flow during genuine fire suppression (where both flow detector and sprinkler switch activate) and non-emergency water discharge (where only flow detector activates), eliminating false alarms.
Solution Approach 2:
The alarm panel acts as an intermediary that processes and correlates information from multiple detection sources before triggering alarms or control valve actions. This intermediary processing layer analyzes the relationship between flow detection signals and sprinkler activation signals to determine the true nature of the event, preventing false alarms from single-source detections.
4Reliability
If multiple detection mechanisms (flow detector and sprinkler switch) are used, then detection reliability is improved, but system complexity increases
Solution Approach 1:
The alarm panel merges the detection functions of the flow detector and sprinkler switches into a unified control system. By combining these detection mechanisms and their signal processing in a single centralized panel, the system achieves high detection reliability through cross-validation of multiple sensors while avoiding the complexity of separate independent control systems for each detector.
Data Source
AI summary
A monitored fire suppression assembly for preventing water damage includes a control valve that is coupled a water supply. A flow detector and a release valve are positioned proximate to the control valve in a piping network extending from the control valve. Each of a plurality of a sprinklers that is coupled to the piping network comprises a switch and a plug. The switch is operationally coupled to the plug so that release of the plug trips the switch. An alarm panel is operationally coupled to the flow detector, the release valve, the control valve, and the switch. Receipt of a flow signal from the flow detector, in an event the switch is not tripped, positions the alarm panel to actuate the control valve to cut off water to the sprinkler, and to actuate the release valve to drain the piping network via a tube extending from the release valve.