Friction-Bonded Pipe Stud Attachment for Zero-Emission Repairs
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Solution Overview
Problem
Current methods for repairing valves and pipes in hazardous environments are inefficient, as they often result in hazardous chemical leakage and exposure for technicians due to the use of combustible processes and inadequate sealing techniques, leading to environmental and safety concerns.
Innovation Solution
The development of a containment system using a friction bonding process with a collet and drill guide that maintains positive pressure to prevent hazardous material release during repair, employing a collet-sealed drill bit and multiple gates to ensure zero emissions and secure attachment without ignition sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional welding processes (arc, MIG, TIG, oxy-acetylene) are used to attach fasteners to pipes and valves, then strong attachment is achieved, but hazardous chemical leakage and ignition risks occur in hazardous environments
Solution Approach 1:
The patent replaces traditional thermal welding processes (arc, MIG, TIG, oxy-acetylene) with a mechanical friction bonding system. The system uses a friction bonder that rotates against the pipe surface to generate heat through friction, then applies forging pressure to create a metallurgical bond without open flames or electric arcs, eliminating ignition sources in hazardous environments
Solution Approach 2:
The patent employs an inert gas shroud that surrounds the bonding interface during the friction bonding process. This creates an inert atmosphere that prevents combustion of hazardous chemicals and protects the bonding area from oxygen, eliminating ignition risks while maintaining strong attachment
2Ease of repair
If drilling and threading holes in valve housings for repair is performed, then valve repair capability is improved, but technician exposure to hazardous chemicals increases
Solution Approach 1:
The patent introduces a sealed repair system with isolation gates and containment structures as intermediaries between the technician and hazardous chemicals. The system allows repair operations to be performed through sealed interfaces, preventing chemical exposure to technicians while maintaining full repair capability
Solution Approach 2:
The patent creates an inert, sealed environment during valve repair operations using containment structures and inert gas purging. This prevents hazardous chemicals from escaping into the workspace and exposing technicians, while still allowing drilling, threading, and assembly operations to proceed
3Reliability
If traditional injection sealant processes are used, then valve sealing is achieved, but hazardous material escapes into the environment
Solution Approach 1:
The patent uses inert gas purging and sealed containment during the sealant injection process to prevent hazardous materials from escaping into the environment. The inert atmosphere displaces oxygen and contains chemicals, allowing sealant injection without atmospheric release
Solution Approach 2:
The patent introduces sealed injection systems and containment structures as intermediaries that capture and control hazardous material flow during sealant injection. These intermediaries prevent direct release of chemicals into the environment while maintaining effective valve sealing
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 solution effectively seals and repairs valves and pipes without releasing hazardous materials into the environment, ensuring technician safety and compliance with EPA regulations by maintaining positive pressure within the system during the repair process.
Implementation Method 1
A portable friction forge bonder friction bonds a stud to a pipe or pipe component
Data Source
AI summary
In some implementations, an apparatus comprises a pipe, a stud that is forge-welded to the pipe, creating a forge-welded stud, a bracket that is operably coupled to the forge-welded stud, and a ladder support operably coupled to the bracket.