Modular Grate Bar Segmentation for Incineration Wear

Solution Overview

Problem

Existing grate bars for incineration plants face issues such as clogging of air nozzles, high wear, costly replacement of entire units, inability to adapt to different firing conditions, and inefficient storage due to inflexible design.

Innovation Solution

A modular grate bar system composed of interchangeable elements, including a support element, combustion path elements, and a foot element, allowing for flexible assembly, reduced material replacement, and self-cleaning air nozzles, with elements having different mechanical properties and materials for optimal performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the entire grate bar is replaced when worn, then the reliability is maintained, but the loss of time and cost increase significantly

Engineering Contradiction:

Improvegrate bar reliabilityVSAvoidreplacement downtime

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The grate bar is divided into modular segments that can be independently replaced. Each segment is a separate replaceable unit, allowing only the worn portion to be removed and replaced while the rest of the grate bar remains in service. This segmentation enables partial replacement rather than complete replacement, significantly reducing downtime and cost.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the entire grate bar is replaced when worn, then the reliability is maintained, but the cost increases due to material waste

Engineering Contradiction:

Improvegrate bar reliabilityVSAvoidmaterial waste

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The grate bar is divided into modular segments that can be independently replaced. Each segment is a separate replaceable unit, allowing only the worn portion to be removed and replaced while the rest of the grate bar remains in service. This segmentation enables partial replacement rather than complete replacement, significantly reducing downtime and cost.

Inventive Principle:

Principle #1Segmentation

3Ease of manufacture

If a fixed grate bar design is used, then the manufacturing is simple, but the adaptability to different firing conditions is limited

Engineering Contradiction:

Improvegrate bar manufacturing simplicityVSAvoidgrate bar adaptability

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The grate bar is divided into modular segments that can be independently replaced. Each segment is a separate replaceable unit, allowing only the worn portion to be removed and replaced while the rest of the grate bar remains in service. This segmentation enables partial replacement rather than complete replacement, significantly reducing downtime and cost.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The modular segments are designed with standardized interfaces and can be configured in different arrangements to suit various firing conditions and fuel types. The same basic segment design can be adapted for different applications by changing the configuration or combination of segments, providing versatility without requiring completely different grate bar designs.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2511609B1Modular grate bar, overlay element and foot element for same and moving grate of a combustion assembly

Publication Date: 2020.12.30 WVT BREIDING

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AI summary

The invention relates to a grate bar (1) for a feed grate of an incineration plant, comprising a combustion track section for the material to be combusted, a front base section, and a rear support section, wherein the grate bar (1) is modularly composed of individual replaceable elements (2, 3, 4) which are positively and/or force-fitted to one another. The invention further relates to a support element (2), a combustion track element (3), and a base element (4) for a grate bar (1), as well as a feed grate of an incineration plant, comprising several grate bars (1) arranged in a stepped fashion.