Radial Fuel Distribution Ring for Symmetrical Solid-Fuel Flames
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Solution Overview
Problem
Existing burners for combusting solids, particularly pulverized lignite, suffer from nozzle blocking and asymmetrical flame formation due to material accumulation, leading to inefficient combustion.
Innovation Solution
A distribution ring with a hollow body and radially arranged discharge spigots that utilize centrifugal forces to distribute fuel particles evenly, preventing accumulation and ensuring uniform fuel supply, resulting in a symmetrical flame pattern and complete combustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discharge spigots are arranged internally or at non-radial positions in the distribution ring, then the structure is simpler, but material accumulation occurs leading to nozzle blocking and asymmetrical flame formation
Solution Approach 1:
The discharge spigots are positioned at the maximum radial distance from the longitudinal axis, utilizing the radial dimension to optimize fuel particle discharge. This radial arrangement ensures that centrifugal forces effectively propel fuel particles outward through the spigots, preventing material accumulation and blocking while maintaining structural simplicity.
Solution Approach 2:
The hollow body features a polygonal inner contour with specific local geometries designed to guide fuel particles toward the radially arranged discharge spigots. This localized geometric optimization ensures uniform fuel distribution at the discharge points while maintaining overall structural simplicity.
2Reliability
If discharge spigots are arranged radially at maximum distance from the longitudinal axis, then material accumulation is prevented and fuel distribution is uniform, but the structural complexity increases
Solution Approach 1:
The discharge spigots are positioned at the maximum radial distance from the longitudinal axis, utilizing the radial dimension to optimize fuel particle discharge. This radial arrangement ensures that centrifugal forces effectively propel fuel particles outward through the spigots, preventing material accumulation and blocking while maintaining structural simplicity.
3Manufacturing precision
If the hollow body has a polygonal inner contour, then particle guidance and discharge are improved, but manufacturing complexity increases
Solution Approach 1:
The hollow body features a polygonal inner contour with specific local geometries designed to guide fuel particles toward the radially arranged discharge spigots. This localized geometric optimization ensures uniform fuel distribution at the discharge points while maintaining overall structural simplicity.
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 ensures reliable and uniform fuel distribution, achieving homogeneous and efficient combustion without residues, with the distribution ring preventing spigot blocking and enhancing flame symmetry.
Implementation Method 1
particles of the fuel that are fed into the distribution ring by means of compressed air are displaced radially outwards, in particular in the direction of the radial outer side wall of the hollow body, due to the centrifugal forces of the fluid flow in the distribution ring
Data Source
AI summary
A distribution ring for fuel in a burner (7) includes a hollow body (21) which is configured to be annular with respect to a longitudinal axis (22), a feed spigot (23) which is connected to the hollow body (21) and is intended for feeding the fuel into the hollow body (21), and a plurality of discharge spigots (25) for discharging the fuel from the hollow body (21) to the burner (7). The discharge spigots (25) are each arranged externally at the hollow body (21) in the radial direction of the longitudinal axis (22).