Rotating Nozzle with Segmented Distribution Members for Pipe Lining

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Solution Overview

Problem

Existing nozzles for applying linings to pipe interiors struggle to achieve a desired thickness and are not suitable for a wide range of viscosities, leading to uneven distribution and inefficiencies in the lining process.

Innovation Solution

A nozzle design featuring multiple distribution members with axial and radial outlet portions that accelerate and distribute the lining material evenly, capable of handling various viscosities through centrifugal force and controlled ejection, along with a mixing space for quick curing of material components to prevent clogging and allow thicker coatings in a single operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional rotating nozzle is used to apply lining material, then the nozzle can rotate about an axis parallel to the pipe centre axis, but the distribution uniformity and thickness control of the lining material deteriorate

Engineering Contradiction:

Improvenozzle rotation capabilityVSAvoidlining thickness uniformity

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The nozzle is divided into multiple distribution members (at least three) arranged radially around the rotation axis. Each distribution member has its own outlet portions, creating segmented material delivery zones that collectively provide uniform coverage across the pipe inner surface while maintaining rotational capability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each distribution member is positioned at a specific radial distance from the rotation axis, creating localized zones with optimized material delivery characteristics. The axial distribution of outlet portions on each member provides local control over material thickness and distribution pattern in different axial regions

Inventive Principle:

Principle #3Local quality

2Device complexity

If a single outlet nozzle is used, then the device structure is simple, but the ability to control lining material distribution and handle various viscosities deteriorates

Engineering Contradiction:

Improvenozzle structure simplicityVSAvoidviscosity range compatibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The single outlet is segmented into multiple outlet portions distributed axially on different distribution members. This segmentation allows the system to handle materials of various viscosities by providing multiple ejection points that can be optimized for different flow characteristics while maintaining a relatively simple overall nozzle structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The multi-outlet nozzle design serves multiple functions: it distributes material uniformly across the pipe surface, accommodates various material viscosities through different outlet configurations, and enables control over lining thickness. This universal design replaces the need for multiple specialized nozzles

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If outlet portions are concentrated in one location, then the material ejection is simple, but the axial distribution control of the lining material deteriorates

Engineering Contradiction:

Improveoutlet arrangement simplicityVSAvoidaxial distribution control

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The outlet portions are segmented and distributed axially across different distribution members rather than concentrated in one location. This axial segmentation provides inherent control over material distribution along the pipe length while maintaining a relatively simple outlet arrangement on each individual member

Inventive Principle:

Principle #1Segmentation

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 nozzle ensures uniform and controlled application of lining material, accommodating different viscosities and enabling thicker coatings with reduced operational cycles, enhancing the efficiency and effectiveness of the relining process.

Implementation Method 1

the centrifugal force generated by the rotation of the nozzle will throw the coating material out from the inner space through the apertures

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

A mixing space for quick curing of material components to prevent clogging and allow thicker coatings in a single operation

Methodology Applied

Scientific EffectMixing: Stirring

Data Source

PatentEP2626142B2A nozzle for applying a lining material onto an inner surface of a pipe

Publication Date: 2019.01.09 PROLINE GRP

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AI summary

This invention relates to a nozzle for applying a lining material onto an inner surface of a pipe to create a lining in the pipe, comprising: a radially inner space (107) for receiving the lining material, said radially inner space having an axial extension, a first and second axially distributed outlet portions (111,111a,111b,...) arranged to allow lining material to leave the radially inner space in at least a radially outward direction, and at least one distribution member (104) arranged radially outside the radially inner space (107) and arranged to rotate about the radially inner space such that the at least one distribution member during rotation passes by the first and second outlet portions and receives lining material leaving the radially inner space.