Plumbing Leak Localization Using Valve Isolation and Flow Monitoring
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Solution Overview
Problem
Existing leak detection systems in plumbing require numerous networked sensors, which are costly and complex to coordinate, especially in large systems like houses or office buildings.
Innovation Solution
A method using automated opening and closing of shut-off valves in conjunction with a flow meter to localize leaks by successively isolating branch lines, determining the leak's location through continuous water flow detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If numerous networked leak detectors are distributed throughout the plumbing system to detect leaks, then leak detection capability is improved, but device complexity and cost increase significantly
Solution Approach 1:
The plumbing system is segmented into multiple zones separated by shut-off valves. Each zone can be isolated independently, allowing a single flow meter to detect leaks in specific sections by systematically opening and closing valves. This segmentation eliminates the need for multiple sensors throughout the system while maintaining reliable leak detection capability.
Solution Approach 2:
Shut-off valves serve as intermediaries between the water supply and potential leak locations. By controlling the opening and closing of these valves, the system isolates different plumbing zones to pinpoint leak locations. The valves enable a single flow meter to effectively monitor multiple potential leak points without requiring continuous sensor presence at each location.
2Device complexity
If a single flow meter is used to monitor the entire plumbing system, then device complexity is reduced, but the ability to locate leaks precisely is compromised
Solution Approach 1:
The system employs periodic opening and closing of shut-off valves to systematically isolate different plumbing zones. The flow meter takes sequential measurements during these periodic valve operations, allowing precise leak location determination. The periodic action enables the single flow meter to effectively survey the entire system over time, achieving both simplicity and precision.
Solution Approach 2:
Before attempting to locate a leak, the system first closes all shut-off valves to isolate the entire plumbing system. This preliminary action ensures that any flow detected by the single flow meter must originate from a leak within the isolated zones, not from external sources. This preliminary isolation enables accurate leak location despite using only one sensor.
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
Effectively localizes leaks with minimal hardware, reducing costs and complexity by identifying the specific branch line or main line with a leak, facilitating targeted repairs.
Implementation Method 1
A flow meter is used to detect a leak in the plumbing system when each of the water outlets is in a non-dispensing state
Data Source
AI summary
The system and method for localizing a water leak uses the automated opening and closing of shut-off valves to localize a water leak in a plumbing system. Water flow in the plumbing system is monitored with a flow meter as shut-off valves associated with a main line and a plurality of branch lines are successively opened and closed. When the continuous flow of water is detected following the opening of one of the shut-off valves, it can be determined that the water leak is in the line associated with that particular shut-off valve. Opening and closing of the shut-off valves, and monitoring with the flow meter, may be under the operation and control of a controller in communication with each. A similar technique may be used to determine if a water leak is in a hot water line or a cold water line of a plumbing system.