Guide Roller Integrated Optical Sensors for Continuous Casting

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Solution Overview

Problem

Guide rollers in continuous casting machines lack monitoring capabilities, leading to high maintenance costs due to unpredictable service life and adverse working conditions such as high temperature, high load, and pollution, making it difficult to predict and prevent failures.

Innovation Solution

Integration of passive optical sensors on guide rollers connected via optical fibers to a processor, allowing for online monitoring of physical parameters like temperature, vibration, load, and grease health, enabling timely detection and replacement of abnormal rollers and reducing maintenance costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional electronic sensors are used to monitor guide rollers, then monitoring capability is provided, but the sensors are affected by electromagnetic interference, high temperature, and vibration in the adverse working environment

Engineering Contradiction:
Improvemonitoring reliabilityVSAvoidelectromagnetic interference, high temperature, vibration
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces electronic sensors with optical sensors that use optical fibers for signal transmission. Optical fibers are immune to electromagnetic interference and can withstand high temperature and vibration environments, thereby resolving the contradiction between providing monitoring capability and resisting adverse working conditions.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If no sensors are installed on guide rollers, then the system remains simple and cost-effective, but the service life cannot be predicted and maintenance costs increase

Engineering Contradiction:
Improvesystem simplicity and cost-effectivenessVSAvoidmaintenance time and cost
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent enables guide rollers to self-monitor their own physical parameters (temperature, vibration, load) through integrated optical sensors. This self-monitoring capability allows for predictive maintenance, extending the service life and reducing maintenance costs without significantly increasing system complexity.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If optical sensors are integrated on guide rollers, then online monitoring of physical parameters is achieved, but the device complexity increases

Engineering Contradiction:
Improvephysical parameter monitoring accuracyVSAvoidsensor integration and wiring complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges the optical sensor and optical fiber directly into the guide roller structure, creating an integrated monitoring unit. This merging approach simplifies the overall system by eliminating separate sensor modules and wiring connections, thereby achieving accurate physical parameter monitoring without significantly increasing device complexity.

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

The solution provides stable and reliable monitoring of guide rollers, allowing for accurate prediction of service life and timely maintenance, reducing costs and improving operational efficiency by using non-electronic sensors resistant to electromagnetic interference and harsh environments.

Implementation Method 1

A passive optical sensor is installed on the roller seat and is connected to a processor via an optical fiber. The processor determines one or more physical parameters at the installation position of the optical sensor based on optical signals collected by the optical sensor.

Methodology Applied
Scientific EffectOptical sensing: Optical Fibre

Data Source

PatentUS11980931B2Guide roller with integrated optical sensors and continuous casting machine
Publication Date: 2024.05.14 AB SKF SKF PATENT DEPARTMENT
  • US11980931B2 patent drawing
  • US11980931B2 patent drawing
  • US11980931B2 patent drawing

AI summary

A guide roller for a continuous casting machine includes a roller seat having bearings, a roller shaft mounted for rotation in the roller seat and at least one roller body mounted on the roller shaft and configured to support a billet. A passive optical sensor is mounted to the roller seat and configured to output optical signals, and an optical fiber extends from the passive optical sensor and is configured to convey the optical signals to a processor configured to determine one or more physical parameters of an installation position of the passive optical sensor based on the optical signals.