Flexible Scraping Members for Bus Stab Decontamination

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Solution Overview

Problem

Electrical apparatus in power distribution systems face issues with contaminants like oxidation and dust adhering to bus stabs, leading to overheating and potential burning, necessitating an effective decontamination method.

Innovation Solution

A decontamination device with flexible scraping members is designed to remove contaminants from bus stabs, featuring a gripping assembly and a scraping assembly that rotates parallel to the bus stab plane, allowing for efficient cleaning and replacement of scraping components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional cleaning methods are used on bus stabs, then the cleaning process is simple, but contaminants like oxidation and dust remain, causing overheating and potential burning

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidcontaminant accumulation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention extracts and removes contaminants (oxidation, dust, paint) from the bus stab surface using flexible scraping members that physically contact and scrape away the harmful deposits, thereby eliminating the contaminant accumulation problem while maintaining electrical connection reliability

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention changes the physical state and properties of the cleaning action by using flexible members with specific material properties (durometer 20-80 Shore A) that allow effective scraping while being gentle enough not to damage the bus stab surface, resolving the contradiction between effective contaminant removal and maintaining surface integrity

Inventive Principle:
Principle #35Parameter changes

2Productivity

If rigid scraping members are used to remove contaminants, then cleaning effectiveness improves, but the risk of damaging the bus stab surface increases

Engineering Contradiction:
Improvecontaminant removal efficiencyVSAvoidbus stab surface integrity
Core Design Contradiction:
ProductivityVSStrength

Solution Approach 1:

The invention changes the physical parameters of the scraping members by specifying flexible materials with durometer 20-80 Shore A, which provides the optimal balance between scraping effectiveness and surface protection, allowing productive contaminant removal without damaging the bus stab surface

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The scraping members are constructed from composite or specially formulated flexible materials that combine the hardness needed for scraping with the softness needed to protect the bus stab surface, resolving the contradiction between cleaning effectiveness and surface integrity

Inventive Principle:
Principle #40Composite materials

3Ease of manufacture

If the scraping assembly is made as a single integrated unit, then manufacturing is simpler, but replacement and maintenance of worn scraping members becomes difficult

Engineering Contradiction:
Improvedevice manufacturing simplicityVSAvoidscraping member replacement
Core Design Contradiction:
Ease of manufactureVSEase of repair

Solution Approach 1:

The invention segments the scraping assembly into separate replaceable scraping members that can be individually replaced when worn, while maintaining a relatively simple integrated structure for the overall device, thereby balancing manufacturing simplicity with ease of maintenance and component replacement

Inventive Principle:
Principle #1Segmentation

4Adaptability or versatility

If the device is designed to accommodate various contamination types, then versatility improves, but device complexity increases

Engineering Contradiction:
Improvecontamination type coverageVSAvoiddevice structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention designs the flexible scraping members with universal properties (appropriate durometer range, flexible construction) that enable them to effectively remove multiple types of contaminants (oxidation, dust, paint, drywall dust) without requiring different specialized tools, thereby achieving versatility without excessive complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 device ensures a clean electrical connection by effectively removing contaminants, reducing maintenance time and preventing overheating, while the replaceable scraping components accommodate various contamination types.

Implementation Method 1

a number of flexible members structured to scrape and thereby clean the bus stab

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9333617B2Decontamination device and method for removing contaminants from electrical apparatus
Publication Date: 2016.05.10 EATON INTELLIGENT POWER LTD
  • US9333617B2 patent drawing
  • US9333617B2 patent drawing
  • US9333617B2 patent drawing

AI summary

A device for removing contaminants from a bus stab of an electrical enclosure is provided. The electrical enclosure includes an electrical bus member disposed in a first plane. The bus stab extends outwardly from the electrical bus member and is disposed in a second plane perpendicular to the first plane. The device includes a gripping assembly and a scraping assembly coupled thereto, the scraping assembly comprising a number of flexible members structured to scrape and thereby clean the bus stab, the device being structured to move in a direction parallel to the second plane when the flexible members scrape the bus stab.