Coal Classifier Turret Outlet for Diffusion Integration
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Solution Overview
Problem
Conventional pulverizers/classifiers with OEM multiport outlets are cumbersome, expensive, and inefficient due to their complex Venturi and transition tube structures, which hinder the adaptation and integration of diffusion devices for improved coal pulverization and distribution.
Innovation Solution
Replacing the OEM multiport outlet with a simpler, lighter flared turret structure that integrates diffusion devices, such as a multi-spin mixer, and using wear-resistant materials to enhance durability, while eliminating the heavy Venturi and transition tubes, allowing for a more efficient coal fines flow and distribution system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional OEM multiport outlet structure with Venturi and transition tubes is used, then the classifier can maintain structural stability, but the device complexity and maintenance difficulty increase significantly
Solution Approach 1:
The outlet structure is divided into modular components: a common body portion that remains fixed and a removable turret assembly containing the diffusion devices. This segmentation allows the complex diffusion functionality to be isolated in a separate module that can be easily removed, replaced, or maintained without affecting the overall classifier structure, thus reducing maintenance difficulty while maintaining structural stability.
Solution Approach 2:
The common body portion of the outlet structure is designed with universal features that can accommodate multiple different turret assemblies with various diffusion device configurations. This multi-functionality allows a single standardized base structure to support different operational requirements by simply changing the turret module, reducing the need for multiple complex custom-built outlet structures.
2Productivity
If the conventional heavy steel Venturi structure is used, then the outlet can handle high coal fines flow, but the weight and cost of the structure increase
Solution Approach 1:
The outlet structure is segmented into a stationary common body that provides structural support and flow handling capability, and a removable turret assembly that contains the diffusion devices. This segmentation eliminates the need for a single heavy monolithic structure, allowing the weight-critical turret portion to be optimized separately while maintaining overall flow capacity through the standardized common body design.
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 turret-based system reduces operational costs and complexity, enhances coal fines pulverization and distribution efficiency, and allows for the integration of diffusion devices, improving the overall performance and longevity of the pulverizer/classifier equipment.
Implementation Method 1
adaptable to the use of diffusion devices of a type hereinafter described
Implementation Method 2
multi-spin mixer described in U.S. Pat. No. 6,899,041
Data Source
AI summary
The OEM Venturi and outlet structures of a conventional coal classifier are removed and replaced with a simple turret having four outlet openings which are connected to the combustion chamber feed conduits. The Venturi and kidney-shaped transition tubes of the OEM structure are scrapped.