Modular Shunt Module for Cathodic Protection Expansion

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing impressed current cathodic protection systems face difficulties in expanding to protect multiple structures due to the complexity and time-consuming process of installing additional shunts to measure current flow, as they require hardwiring of new shunts for each additional structure.

Innovation Solution

A shunt module with a rail mounting mechanism, electrically insulating strip carrier, and conductive shunt strip is introduced, allowing for easy installation and removal, coupled with a bond box that supports multiple shunt modules and facilitates current measurement through adjustable rails and cables.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional hardwired shunts are used to measure current flow in each structure, then measurement precision is maintained, but device complexity and installation time increase significantly when expanding to protect multiple structures

Engineering Contradiction:

Improvecurrent flow measurementVSAvoidsystem expansion complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system divides the cathodic protection network into modular segments, each with its own shunt module that can be independently installed and measured. The bond box serves as a central hub that accepts multiple modular shunt modules, allowing the system to be segmented into manageable units that can be expanded incrementally without redesigning the entire system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bond box is designed as a universal mounting platform that can accommodate multiple shunt modules for different structures simultaneously. The rail mounting mechanism provides a universal interface that works for all shunt modules, allowing the same hardware to serve multiple measurement functions across different protected structures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If additional shunts are hardwired into the system for each new structure, then current measurement capability is maintained, but installation time and labor effort increase

Engineering Contradiction:

Improvecurrent flow measurementVSAvoidinstallation time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The shunt modules are pre-assembled with the shunt element, rail mounting mechanism, and electrical connections prepared in advance. This preliminary preparation allows for rapid installation by simply mounting the complete module onto the bond box rail, eliminating the need for time-consuming on-site hardwiring of individual shunts.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The rail mounting mechanism provides a dynamic, adjustable mounting system where shunt modules can be easily installed, removed, or repositioned along the rail. This dynamic mounting capability transforms the installation process from a fixed, time-consuming hardwiring operation to a flexible, rapid plug-and-play operation.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If multiple separate shunts are installed for multiple structures, then individual current measurement is achieved, but ease of operation deteriorates due to complex wiring requirements

Engineering Contradiction:

Improveindividual current measurementVSAvoidsystem operation simplicity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

Multiple shunt modules are merged into a single bond box assembly, where each module maintains its individual measurement capability but benefits from shared mounting infrastructure and centralized access. The rail mounting mechanism merges the mounting function for all shunt modules into a single standardized system, simplifying operations.

Inventive Principle:

Principle #5Merging (Combining)

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

Enables efficient and streamlined expansion of impressed current cathodic protection systems to protect multiple structures by simplifying the installation of shunt modules and allowing for easy measurement of current flow, reducing the time and effort required for system expansion.

Implementation Method 1

The shunt includes a conductive strip or wire having contacts at opposing ends

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

The shunt is coupled to the strip carrier and electrically isolated from the mounting mechanism

Methodology Applied

Scientific EffectElectrical insulation: Dielectric

Data Source

PatentUS9667048B2Cathodic protection system for multiple structures using shunt modules

Publication Date: 2017.05.30 ACCURATE CORROSION CONTROL INC

AI summary

A shunt module for use in an impressed current cathodic protection system includes a rail mounting mechanism, an electrically insulating strip carrier mounted to the rail mounting mechanism, and a shunt. The shunt includes a conductive strip or wire having contacts at opposing ends. The shunt is coupled to the strip carrier and electrically isolated from the mounting mechanism.