Grounding Assemblies for Large Conductive Pipes
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Solution Overview
Problem
Large conductive pipes experience induced electrical current from power lines and geomagnetic sources, making maintenance and repairs challenging due to the need to dissipate this current effectively.
Innovation Solution
A temporary grounding assembly comprising a ground clamp with teeth to securely connect to the pipe, a tensioning member, a tensioner device, a first conductor, and a ground rod, optionally with a grounding mat and second conductor, designed to dissipate induced current by establishing an electrical connection to the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground clamps are used to dissipate induced current in large conductive pipes, then electrical safety is improved, but device complexity increases due to the need for multiple components including tensioning members and tensioner devices
Solution Approach 1:
The grounding assembly is divided into separate functional components: ground clamp with teeth for electrical contact, tensioning member for applying force, and tensioner device for maintaining tension. This segmentation allows each component to be optimized independently while working together to solve the electrical safety problem.
Solution Approach 2:
The tensioning member acts as an intermediary between the tensioner device and the ground clamp, transmitting the mechanical force needed to ensure proper electrical contact without being part of the electrical circuit itself. This mediator approach allows the system to achieve reliable electrical connection while maintaining design flexibility.
2Adaptability or versatility
If multiple contact surfaces are provided for different pipe diameters, then adaptability is improved, but manufacturing complexity increases
Solution Approach 1:
The ground clamp is designed with multiple contact surfaces that can accommodate different pipe diameters, making a single clamp design universal for various pipe sizes. This multi-functionality eliminates the need for multiple specialized clamp types, simplifying inventory and installation while maintaining adaptability.
Solution Approach 2:
Different portions of the clamp have different contact surface geometries optimized for specific pipe diameters. Each local contact surface is tailored to its intended pipe size while being integrated into a single clamp body, allowing the component to adapt to different conditions without requiring complete redesign for each application.
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 assembly effectively eliminates induced current in pipes, allowing for safe maintenance and operation by ensuring equipotential voltage between the pipe and grounding mat, reducing the risk of electrical hazards during repairs or normal operation.
Implementation Method 1
The plurality of teeth are configured to make electrical connection with an outer diameter of a pipe
Implementation Method 2
The tensioning member is secured to one end of the ground clamp. The tensioner device is securable to the tensioning member and to an opposite end of the ground clamp
Data Source
AI summary
A temporary grounding assembly is provided that includes a ground clamp, a tensioning member, a tensioner device, a first conductor, and a ground rod. The ground clamp has a main body with a plurality of teeth that are configured to make electrical connection with an outer diameter of a pipe. The tensioning member is secured to one end of the ground clamp. The tensioner device is securable to the tensioning member and to an opposite end of the ground clamp. The first conductor is in electrical connection with the ground clamp. The ground rod is in electrical connection with the first conductor.