Cured-in-Place Pipe Mobile Unit Steam Curing
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Solution Overview
Problem
Current Cured-in-place pipe (CIPP) installation methods face challenges in efficiently curing resin-impregnated liners within existing pipelines, particularly in ensuring a continuous and tight-fitting reconstruction, especially in varying gravity and pressure applications.
Innovation Solution
A mobile unit equipped with a low pressure-high volume blower system, a low NOx burner system, a hydraulic reservoir, and a steam separator system, which provides controlled air and steam circulation for curing the resin-impregnated liners, ensuring effective expansion and curing of the liners within existing conduits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional CIPP installation methods are used, then resin-impregnated liners can be installed in existing pipelines, but curing efficiency and uniformity are insufficient
Solution Approach 1:
The curing system is segmented into multiple independent steam injection points distributed along the liner length, allowing localized control of steam delivery to different sections of the pipeline being rehabilitated
Solution Approach 2:
The system uses a hydraulic circulation loop with pump, heat exchanger, and steam generation components to create pressurized steam flow that is injected through the liner walls, utilizing fluid dynamics to achieve uniform heat distribution throughout the resin-impregnated material
2Speed
If high pressure steam is used for curing, then curing speed increases, but equipment complexity and energy consumption increase
Solution Approach 1:
The mobile curing unit is designed as a multi-functional integrated system that combines steam generation, heat exchange, fluid circulation, and injection capabilities in a single portable platform, eliminating the need for separate specialized equipment for each curing function
Solution Approach 2:
The system employs a heat exchanger to precisely control steam parameters (temperature, pressure, flow rate) according to the specific curing requirements of different resin materials and pipeline configurations, optimizing curing speed while maintaining equipment simplicity
3Quantity of substance
If conventional burner systems are used, then steam generation is achieved, but environmental impact increases due to high NOx emissions
Solution Approach 1:
The burner system utilizes controlled combustion with optimized air-fuel ratios and enhanced oxygen supply to promote complete combustion of the fuel source, significantly reducing the formation of nitrogen oxides while maintaining efficient steam generation rates
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
The solution enables efficient curing of CIPP liners, resulting in continuous and tight-fitting pipes suitable for diverse applications such as sanitary sewers, storm sewers, and electrical conduits, while minimizing environmental impact through low NOx emissions.
Implementation Method 1
a low pressure-high volume blower system, which provides controlled air and steam circulation for curing the resin-impregnated liners
Implementation Method 2
a low NOx burner system
Implementation Method 3
which provides controlled air and steam circulation for curing the resin-impregnated liners
Implementation Method 4
a steam separator system, which provides controlled air and steam circulation for curing the resin-impregnated liners
Implementation Method 5
ensuring effective expansion and curing of the liners within existing conduits
Data Source
AI summary
Apparatus and methodology for installing and curing of “Cured-in-place” pipe, mounted unitarily as a mobile unit having a pressurization system such as a low pressure-high volume blower system, a low-NOx burner system, a power system such as a hydraulic reservoir, electrical and/or motor driven, and a burner chamber system.