Retaining Plate With Inclined Spikes For Pipe Repair
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Solution Overview
Problem
Existing pipe repair methods face challenges in securely holding reinforcement strips in place during winding, particularly when multiple strips are required, due to limited length and tension issues, leading to potential slippage.
Innovation Solution
A sleeve with a retaining plate made of rigid material, featuring inclined spikes on both faces, secures the new reinforcement strip to the previous strip by integrating with the end of the first strip and starting end of the new strip, preventing slippage during winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a reinforcing strip is wound under tension around the pipe, then the mechanical strength and tensile properties of the repair are improved, but the strip tends to slip during winding making it difficult to hold in place
Solution Approach 1:
A retaining plate serves as an intermediary component between the first reinforcing strip and the second reinforcing strip. The plate has points on each face that penetrate into the strips to prevent slippage. This mediator allows the strips to be wound under tension while being securely held in position during the winding process.
2Device complexity
If the reinforcing strip has a limited length, then the material cost and complexity are reduced, but the length may be insufficient to wind the degraded part requiring multiple strips
Solution Approach 1:
The retaining plate is divided into two functional faces: a first face with points for securing to the first reinforcing strip and a second face with points for securing the second reinforcing strip. This segmentation allows multiple strips of limited length to be connected sequentially to cover the entire degraded portion of the pipe.
3Reliability
If multiple reinforcing strips are wound to cover the degraded part, then the coverage and reliability are improved, but the slippage problem increases making it difficult to secure the new strip
Solution Approach 1:
The retaining plate is positioned in advance between the first and second reinforcing strips. The points on the plate are pre-configured to penetrate into the strips at specific angles (30°-60°). This preliminary positioning ensures that when the second strip is wound under tension, it is immediately secured by the plate, preventing slippage from the outset.
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 retaining plate effectively secures the new reinforcement strip, allowing for tensioned winding without slippage, ensuring a stable and reliable repair process for pipe degradation.
Implementation Method 1
a retaining plate of rigid material comprising points on each of its two faces, the points of each of the faces having a length of between 1 and 3 mm forming an angle with the base of the face on which they are located between 30° and 60°, the plate being, on the one hand, secured by the points of one of its faces to the first reinforcing strip, and, on the other hand, made integral with the second reinforcement strip
Data Source
Figure 1~3
Figure 4
AI summary
A retaining plate (30) made from a rigid material comprising tips on each of the two faces of same, the tips of each of the faces of a length of between 1 and 3 mm making an angle in the forward direction with the face of between 30° and 60°. The retaining plate is secured by the tips of one of the faces of same at the final end (28) of a first reinforcing strip (26) already positioned on the degraded portion of a pipe, and secured to the initial end (32) of a second reinforcing strip to be wound following the first reinforcing strip by the tips of the other face, said tips being tilted towards the initial end (32) of said second reinforcing strip.