Vehicle-Mounted Pipe Lining Inversion for Faster On-Site Rehabilitation

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Solution Overview

Problem

The current construction speed of ambient cured-in-place pipe lining is insufficient to meet the increasing demands for pipe rehabilitation and reinforcement due to the complexity and time-consuming nature of the process.

Innovation Solution

The inversion lining rehabilitation equipment integrates multiple devices onto a working vehicle, including a matrix mixing device, hose impregnating and flattening device, hose inversion device, and movable bracket, allowing for on-site manufacturing and efficient deployment of the hose liner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple devices and steps are used for pipe rehabilitation and reinforcement, then the quality of pipe rehabilitation is improved, but the construction time increases significantly

Engineering Contradiction:

Improvequality of pipe rehabilitationVSAvoidconstruction time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines multiple separate devices (matrix mixing device, hose impregnating device, hose inversion device, water supply device, and support frame) into an integrated rehabilitation system that operates from a single vehicle position. This merging of functions allows all rehabilitation steps to be performed sequentially without moving equipment, thereby maintaining high quality while reducing construction time.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The support frame serves multiple functions: it supports the hose inversion device, provides a mounting structure for the water supply device, and acts as a structural framework for the entire system. This multi-functionality reduces the number of separate devices needed, thereby reducing overall construction time while maintaining rehabilitation quality.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If traditional ambient cured-in-place pipe lining is used, then pipe rehabilitation quality is achieved, but construction speed is insufficient

Engineering Contradiction:

Improvepipe rehabilitation qualityVSAvoidconstruction speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The matrix material is prepared and mixed in advance using the matrix mixing device before hose impregnation. The hose is impregnated with the pre-mixed matrix material and then inverted into the pipe. This preliminary preparation of materials and sequential arrangement of operations eliminates waiting time during construction, thereby increasing construction speed while maintaining rehabilitation quality.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system enables continuous operation where the matrix mixing device continuously prepares material that is immediately impregnated into the hose, which is then continuously inverted and positioned in the pipe. This continuous flow of operations without interruption or repositioning maintains high construction speed while ensuring consistent rehabilitation quality.

Inventive Principle:

Principle #20Continuity of useful action

3Adaptability or versatility

If hose impregnation and inversion are performed manually, then flexibility is maintained, but construction efficiency is reduced

Engineering Contradiction:

Improveoperational flexibilityVSAvoidconstruction efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent replaces manual hose impregnation and inversion operations with mechanically automated devices. The hose impregnating device automatically impregnates the hose with matrix material, and the hose inversion device mechanically inverts and positions the hose in the pipe. This mechanical automation maintains operational flexibility while dramatically increasing construction efficiency.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This integrated equipment significantly enhances construction efficiency by allowing for on-site manufacturing and flexible deployment, reducing the risk of rework and improving the speed of pipe rehabilitation and reinforcement.

Implementation Method 1

The air pump is used to inflate the hose to push it into the pipe

Methodology Applied

Scientific EffectPneumatic pressure: Pressure Increase

Implementation Method 2

cured at ambient temperature to achieve rehabilitation and reinforcement

Methodology Applied

Scientific EffectAmbient temperature curing:

Data Source

PatentUS12305789B1Inversion lining rehabilitation equipment and method for pipe rehabilitation and reinforcement

Publication Date: 2025.05.20 SUN YAT SEN UNIV

AI summary

Inversion lining rehabilitation equipment and method for pipe rehabilitation and reinforcement are disclosed. The equipment includes a working vehicle, a power supply unit, a matrix mixing device, a hose impregnating and flattening device, a hose inversion device and a movable bracket. The working vehicle has a box body and a vehicle-mounted support frame. The box body has a first accommodation space, which accommodates a dry hose material storage area, a matrix material storage area, a guide tube storage area, the power supply unit, the matrix mixing device and the hose impregnating and flattening device. The hose inversion device includes an inversion machine and an air pump. The movable bracket includes a bracket body. The top of the vehicle-mounted support frame and the top of the bracket body are respectively provided with a first mounting seat and a second mounting seat to be detachably connected to the inversion machine.