Hose Liner Attachment via Inversion and Bladder Expansion
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Solution Overview
Problem
Existing methods for attaching a liner to a hose, particularly for pipe rehabilitation, require different packers for varying pipe diameters, leading to high costs and complexity.
Innovation Solution
A method involving marking the hose, inverting it to create an inversion point, inserting a liner and a bladder, expanding the bladder to hold a fastener, and then reversing the hose to secure the liner inside, without needing specialized packers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different packers are used for varying pipe diameters, then the liner can be securely attached to the hose, but the cost and device complexity increase significantly
Solution Approach 1:
The patent applies universality by using a single standardized pucker design that can be used across multiple pipe diameters. Instead of requiring different packers for different pipe sizes, the invention uses one universal pucker that can be positioned at various locations along the hose assembly, eliminating the need for multiple specialized components and reducing device complexity while maintaining attachment reliability.
Solution Approach 2:
The patent applies segmentation by dividing the hose assembly into modular sections with the pucker positioned at specific intervals. The hose assembly includes the liner, calibration hose, and pucker as separate, interchangeable components that can be configured for different pipe diameters without requiring custom packers, thus reducing overall system complexity while maintaining secure attachment.
2Productivity
If packers with extendable bladders are used, then the liner can be positioned in small pipe sections, but the cost increases due to custom-fit requirements
Solution Approach 1:
The patent eliminates custom-fit requirements by using a universal pucker design that works across different pipe sizes and rehabilitation scenarios. The standardized pucker can be used for both small and large pipe sections, and can be positioned at various locations along the hose assembly, thereby maintaining productivity while dramatically simplifying manufacturing by eliminating custom production requirements.
Solution Approach 2:
The patent applies parameter changes by adjusting the position of the standardized pucker along the hose assembly rather than changing the pucker itself. By varying the location and configuration of the same pucker component, the system can adapt to different pipe diameters and rehabilitation needs without requiring custom-manufactured parts, thus reducing manufacturing complexity while maintaining operational flexibility.
3Ease of operation
If the hose is inverted into the pipe, then the liner can be applied to the pipe interior, but the liner positioning precision must be maintained during the inversion process
Solution Approach 1:
The patent applies preliminary action by pre-positioning the pucker at a specific location along the hose assembly before inversion. The pucker is attached to the calibration hose at a predetermined position that corresponds to the desired liner endpoint in the pipe. This pre-positioning ensures that when the hose is inverted, the liner is automatically positioned with the required precision without requiring complex control mechanisms during the inversion process itself.
Solution Approach 2:
The patent uses the pucker as an intermediary element that mediates between the hose inversion process and the liner positioning requirement. The pucker acts as a reference point or marker that maintains its position relative to the pipe wall during inversion, thereby ensuring accurate liner placement. The pucker serves as a stable intermediary that translates the inversion motion into precise liner positioning.
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
Simplifies the attachment of a liner to a hose, reduces costs, and allows precise placement of the liner within the pipe, using conventional hoses and liners, thus streamlining the pipe lining process.
Implementation Method 1
an bladder is placed in the liner in the area of the inversion point and expanded
Data Source
Figure 1~4
Figure 5~6
Figure 7~8
AI summary
The invention relates to a method for attaching a liner (4) to a hose (1), in particular a calibration hose, comprising: - providing the hose (1) with a first end (2) and an opposite second end (3); - applying a mark (5) to the hose (1); - turning the hose (1) inside out by turning the first end (2) over the outside (13) of the hose (1) towards the second end (3) or vice versa up to the mark (5), so that an inversion point (12) is formed; - inserting the liner (4) into the hose (1) and arranging the liner (4) at the inversion point (12) of the hose (1); - inserting a bladder (6) into the liner (4) in the region of the inversion point (12) and expanding the bladder (6); - Inserting a fastening device (7) at the inversion point (12) between the liner (4) and the hose (1) so that the liner (4) is held on the hose (1);and - removing the bladder (6) and turning the tube (1) inside out into its original position.;