Hose Liner Insertion via Guide Part Deflection
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Solution Overview
Problem
Existing pipe lining methods require access to private properties, leading to high legal and excavation costs, and are limited by small pipe diameters and difficulty in observing the insertion process, which increases time and material expenditure.
Innovation Solution
A method where the hose liner is positioned at a distance from the main sewer's outlet, using a guide part to deflect the liner into the underground pipe, allowing for precise insertion and monitoring, and enabling the use of smaller diameters, with a split device for easier assembly and removal, and camera assistance for optimal positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the holding device is positioned directly at the outlet of the main pipe to insert the hose liner, then the insertion process is simplified, but the view of the underground pipe is blocked making monitoring difficult
Solution Approach 1:
The device is divided into two independent parts: the holding device for inserting the hose liner and the guide part for directing the liner. This segmentation allows the holding device to be positioned at the outlet for easy insertion while the guide part provides an unobstructed view for monitoring, resolving the contradiction between operational simplicity and monitoring capability.
2Productivity
If the holding head is fixed directly at the outlet of the underground pipe, then the hose liner can be inserted efficiently, but the method cannot be used for small pipe diameters
Solution Approach 1:
By separating the holding device from the guide part, the system becomes adaptable to different pipe configurations and diameters. The guide part can be positioned optimally for small diameter pipes while the holding device maintains efficient insertion capability, thus resolving the contradiction between productivity and adaptability.
Solution Approach 2:
The guide part acts as an intermediary element that enables the holding device to work effectively with small diameter pipes. It provides the necessary guidance and positioning without requiring the holding head to be directly fixed at the pipe outlet, making the system versatile for various pipe sizes.
3Ease of manufacture
If access is obtained from private property to insert the pipe liner, then the rehabilitation can be performed, but high legal and excavation costs are incurred
Solution Approach 1:
Instead of accessing the pipe from the private property side (traditional approach), the method inverts the approach by inserting the hose liner from the public main sewer side. This reversal eliminates the need for private property access and associated costs, while still achieving complete pipe rehabilitation.
4Reliability
If the hose liner is inserted from the private property side, then the entire pipeline including private section is rehabilitated, but municipalities bear high clean-up costs for areas they are not responsible for
Solution Approach 1:
The method inverts the insertion direction to start from the public main sewer rather than the private property side. This allows the hose liner to be pushed through the entire pipeline including private sections, achieving complete rehabilitation while the municipality only incurs costs for the public sector portion, as the liner is pulled back through the public infrastructure.
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 cost-effective and reliable rehabilitation of pipes across a range of diameters, reducing material and time costs, and allowing for unobstructed monitoring of the insertion process, thus improving the efficiency and flexibility of pipe lining operations.
Implementation Method 1
The hose liner is advanced into the main pipe in the longitudinal direction of the main pipe by using compressed air from the holding head
Implementation Method 2
The curing process of the resin-hardener mixture is then initiated, for example by UV radiation or heat
Implementation Method 3
The curing process of the resin-hardener mixture is then initiated, for example by UV radiation or heat
Implementation Method 4
After the end of the feed process, the pipe liner is expanded and is thus in contact with the inner wall of the pipeline to be rehabilitated
Data Source
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AI summary
For the tube lining of a ground pipe (B) leading into a main channel (A), a tube liner (1) in the form of a resin-impregnated tube is connected to a holding device (2) and the holding device is arranged in the main channel (A). The tube liner (1) is turned inside out into the ground pipe (B) to be repaired from the holding device (2) arranged in the main channel (A), and is applied to the line wall of the ground pipe (B) and then cured. According to the invention, the holding device (2) with the tube liner (1) is positioned in the main channel (A) at a distance (a) to the opening of the ground pipe (B) and the tube liner (1) starting from the holding device (2) is advanced along the main channel (A) and deflected by means of a guide part (5.3) and inserted from the main channel (A) into the ground pipe (B).