Irrigation Pipe Fabric Layer Fiber Orientation
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Solution Overview
Problem
Multilayer irrigation pipes with fabric layers experience significant elongation under fluid pressure, leading to detrimental effects such as pipe displacement, weakened connections, and disrupted fluid flow due to friction, which are particularly problematic in field irrigation systems where pipe stability is crucial.
Innovation Solution
The irrigation pipe design features a fabric layer with transversely oriented main fibers and auxiliary fibers, optionally comprising multiple sub-layers with specific fiber arrangements and orientations, and a breathable outer layer with gaps to minimize elongation and enhance load-bearing capacity, while allowing fluid passage and reducing pressure on connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fabric layer with unidirectional main fibers is used in the irrigation pipe, then the pipe can maintain structural integrity, but it experiences significant axial elongation under fluid pressure
Solution Approach 1:
The patent applies asymmetry by using different fiber orientations in the fabric layer. Specifically, the fabric layer contains fibers oriented at different angles (e.g., 0° and 90° relative to the pipe axis) to create an asymmetric reinforcement pattern that resists axial elongation while maintaining structural integrity under fluid pressure.
Solution Approach 2:
The patent uses composite materials by combining multiple layers with different properties: an inner polymer layer for flexibility and water tightness, a fabric layer with specifically oriented fibers for strength and elongation control, and an outer layer for protection. This multi-material composite structure optimizes both structural integrity and dimensional stability.
2Adaptability or versatility
If the pipe is made flexible to allow installation and adaptability, then it can be easily installed and adapted to field conditions, but it is prone to elongation and displacement under pressure
Solution Approach 1:
The patent changes the physical parameters of the pipe structure by controlling the fiber orientation angles and distribution in the fabric layer. By optimizing these parameters, the pipe achieves a balance between flexibility for installation and stability to prevent displacement under operating pressure.
Solution Approach 2:
The patent segments the pipe structure into distinct functional layers: an inner flexible polymer layer for installation adaptability, a middle fabric layer with oriented fibers for dimensional stability, and an outer protective layer. This segmentation allows each layer to perform its specific function optimally.
3Stress or pressure
If the pipe elongates under pressure, then it may accommodate pressure variations, but it causes undue pressure on connection points and may lead to disengagement
Solution Approach 1:
The patent applies preliminary anti-action by pre-configuring the fabric layer with specifically oriented fibers that counteract the tendency of the pipe to elongate under pressure. This preventive structural design reduces the elongation force transmitted to connection points, thereby protecting connections from undue stress and potential disengagement.
4Stress or pressure
If the pipe is allowed to elongate freely, then it can absorb pressure stress, but it develops a snaking or zigzag shape that adversely affects fluid flow
Solution Approach 1:
The patent uses asymmetric fiber orientation in the fabric layer to provide directional reinforcement that prevents the pipe from developing snaking or zigzag shapes under pressure. The specific angle arrangements of fibers create resistance to lateral deviations while allowing controlled stress absorption.
Solution Approach 2:
The patent employs a flexible polymer layer combined with the oriented fabric layer to create a flexible yet shape-stable pipe structure. This flexible shell design allows the pipe to absorb pressure stress without developing detrimental deformations that would affect fluid flow.
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 design significantly reduces axial elongation and maintains pipe stability, preventing damage to connections and ensuring consistent fluid flow by optimizing fiber orientation and layer structure, with improved load-bearing ability and reduced risk of pipe snaking or disengagement.
Implementation Method 1
orientation of the main or structural fibers in a fabric layer of irrigation pipes influence the extent of it's elongation along a longitudinal axis thereof due to pressure caused by fluid passing therethrough
Implementation Method 2
elongation of the pipe may result in a snaking or zigzag shape of the pipe at a portion thereof, caused by the frictional interaction of the elongated portion of the pipe with the surface upon which it rests
Data Source
AI summary
An irrigation pipe formed from a sheet that is rolled into a tube about a longitudinal axis of the sheet. The pipe has a watertight layer and a fabric layer. The fabric layer comprises a first fiber arrangement including first main fibers having a first orientation and a second fiber arrangement including second main fibers having a second orientation. The first and second orientations are transverse relative to each other and to the longitudinal axis when viewed in the sheet before it is rolled.