Knuckle-Jointed Lance Segments with Exterior Protective Rods
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Solution Overview
Problem
Conventional tubular cleaning systems experience wear on knuckle-jointed lance segments and the interior of tubulars due to prolonged contact during high rotational speed operations, which can lead to damage and reduced system longevity.
Innovation Solution
The implementation of a hollow knuckle-jointed lance segment with exterior protective rods that protrude above the surface, secured in recesses, to minimize contact between the lance segments and the tubular interior, thereby reducing wear and extending the life of both components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high rotational speed operations are used for cleaning tubulars, then cleaning efficiency and productivity are improved, but wear on lance segments and tubular interiors increases
Solution Approach 1:
The patent introduces protective rods as an intermediary element between the lance segment and the tubular interior. These rods are made of wear-resistant material and are designed to contact the tubular surface during cleaning operations, thereby protecting both the lance segment from wear and the tubular from damage while maintaining high-speed operational capability
2Reliability
If protective rods are added to lance segments, then wear resistance and component life are improved, but device complexity increases
Solution Approach 1:
The lance is divided into modular segments, with protective rods that can be independently installed and removed from each segment. This segmentation allows the protective system to be maintained separately from the lance structure itself, simplifying overall system complexity while extending component life
Solution Approach 2:
The protective rods are designed as consumable components that can be easily replaced when worn. By using inexpensive, replaceable rods rather than making the entire lance segment wear-resistant, the system achieves extended operational life without permanent structural complexity
Data Source
AI summary
A knuckle-jointed lance (KJL) segment with an exterior protective system (EPS), comprising an elongated hollow body and at least one protective rod. The body has a generally trapezoidal profile, when viewed in elevation, and is open at both ends. At least one elongate recess is provided in the exterior surface of the body. Each recess follows a predetermined pathway within the exterior surface. At least one consumable protective rod is received into each elongate recess.