Vacuum Fire Protection Pressure Controller
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Solution Overview
Problem
Fire protection systems operating under vacuum pressure face challenges in detecting sprinkler openings due to the limitations of existing technologies, which are designed for systems above atmospheric pressure, leading to corrosion issues and restricted grid piping configurations.
Innovation Solution
A pressure controller with a pressure transducer and processor module that monitors and detects positive rate changes in vacuum pressure, activating a vacuum pump or water supply valve to address sprinkler openings, allowing for quick detection and efficient fluid delivery in vacuum sprinkler systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fire protection system operates at positive pressure using air as fluid, then the system can deliver water through sprinklers, but moisture in the air causes corrosion in the piping network
Solution Approach 1:
The patent replaces air (an atmosphere containing moisture that causes corrosion) with an inert or dry atmosphere in the piping network. By maintaining the system under vacuum pressure and using dry gas or inert atmosphere, the harmful moisture is eliminated, preventing corrosion while maintaining system reliability for fire protection operation.
2Reliability
If a fire protection system operates at positive pressure, then sprinkler activation can be detected, but the gas fluid flow must be expelled before water delivery limits the response efficiency
Solution Approach 1:
The patent inverts the conventional approach by operating the fire protection system under vacuum pressure instead of positive pressure. This reversal allows water to be delivered immediately when a sprinkler activates without needing to expel gas fluid first, as the vacuum naturally draws water through the system, eliminating the time delay while maintaining reliable sprinkler detection capability.
3Measurement precision
If existing pressure detection technologies are used in vacuum systems, then system monitoring is possible, but the technologies designed for positive pressure systems cannot accurately detect sprinkler openings under vacuum
Solution Approach 1:
The patent addresses the incompatibility of existing pressure detection technologies by changing the operational parameter from positive pressure to vacuum pressure. The system is specifically designed with detection mechanisms calibrated for vacuum conditions, allowing accurate sprinkler opening detection in the inverted pressure environment where conventional positive-pressure technologies fail.
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
Enables rapid detection of sprinkler openings and efficient fluid delivery in vacuum sprinkler systems, reducing corrosion risks and enabling grid piping configurations, while maintaining system integrity and hydraulic performance.
Implementation Method 1
The pressure controller comprises a pressure transducer for sampling a pressure in the piping network and generating a pressure signal
Implementation Method 2
a piping network maintained under vacuum pressure by a vacuum pump
Data Source
AI summary
The invention is directed to a pressure controller and a method for monitoring and controlling the pressure level in a fire protection piping network maintained under vacuum pressure and for detecting a positive pressure variation in the network. The rate of pressure increase is used to detect the opening of a sprinkler head in the sprinkler piping network.