Hydrant Leak Detection Insertion Without Shutting Pipeline Flow
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Solution Overview
Problem
Existing leak detection systems for underground water pipelines require shutting off the water flow to introduce detection elements, which is inconvenient and may not be feasible in all situations.
Innovation Solution
A system and method that allows a leak detection element with an electromagnetic signal transmitter to be introduced into an underground water pipeline through a hydrant without stopping the water flow, using a capping mechanism with a waterproof membrane and a hose or rod to guide and seal the element, and utilizing pressurized fluid to push the element into the pipeline, allowing it to be carried by the water pressure to the leak site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If water flow is turned off before introducing the leak detection element, then the detection element can be easily introduced into the pipeline, but the water supply is interrupted causing inconvenience and potential contamination
Solution Approach 1:
The system performs preliminary actions by attaching the capping means to the hydrant outlet and positioning the elongate element with sealing membranes before introducing the leak detection element. This preliminary setup creates a sealed introduction path that allows the detection element to be introduced without shutting off water flow, thus maintaining water supply continuity while facilitating easy introduction of the detection element.
2Productivity
If a capping means with waterproof membranes is used to seal the hydrant outlet, then the leak detection element can be introduced without stopping water flow, but the device complexity increases
Solution Approach 1:
The capping means serves multiple functions: it seals the hydrant outlet to prevent water leakage, provides a mounting structure for the elongate element, and creates a sealed passage for introducing the leak detection element. This multi-functionality reduces the need for separate specialized components, thereby managing device complexity while maintaining water supply continuity during detection element introduction.
3Productivity
If pressurized fluid is used to push the leak detection element into the pipeline, then the element can be introduced without stopping water flow, but the use of energy increases
Solution Approach 1:
The system uses pressurized fluid (pneumatic or hydraulic) to propel the leak detection element into the pipeline through the sealed capping means. This allows the detection element to be introduced without interrupting water flow, maintaining productivity. The pressurized fluid provides the necessary force to overcome resistance and push the element through the sealed passage and into the flowing water.
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 the location of leaks in underground water pipelines without interrupting the water supply, facilitating quicker and more efficient leak detection and repair processes.
Implementation Method 1
a source of pressurised fluid connected to a first end of a hose passing through the at least one opening of the capping means and the pressurised fluid has a pressure greater than the pressure of the water in the pipeline
Implementation Method 2
the capping means is provided with a substantially waterproof membrane to provide a seal between the capping means and the outlet of the hydrant
Implementation Method 3
the leak detection element includes an electromagnetic signal transmitter and the means for detecting the location of the leak detection element is an electromagnetic signal receiver
Data Source
AI summary
A system for locating a leak site in an underground water pipeline comprises a leak detection element, means for introducing the leak detection element into the pipeline through an outlet of a hydrant, and means for detecting the location of the leak detection element from above the ground. The means for introducing the leak detection element into the pipeline includes capping means adapted for attachment to, and sealing of, the outlet of the hydrant. The capping means has at least one opening therethrough to allow passage of an elongate rod or hose through the capping means and into the outlet of the hydrant. The capping means is provided with a substantially waterproof membrane to provide a seal between the capping means and the outlet of the hydrant, and the at least one opening is provided with a substantially waterproof membrane to provide a seal between the rod or hose and the at least one opening. A method for locating a leak site in an underground water pipeline is also provided.