Combustion Grate Bordering Element for Thermal Expansion Sealing
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Solution Overview
Problem
Existing combustion grates for waste incineration suffer from thermal loading that causes erosion and deformation, leading to shortened service life and uncontrolled primary air inflow due to thermal expansion, which promotes uncontrolled incineration and further thermal loading.
Innovation Solution
A grate line bordering element comprising a channel element and channel covering with engagement elements and a locking apparatus that compensates for thermal expansion, ensuring improved tightness and controlled primary air inflow by using a channel element that can be compressed to accommodate expansion, and includes a seal element to prevent uncontrolled air ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-part cast grate line separation element is used, then the structure is simple and easy to manufacture, but it cannot fully compensate for thermal expansion and allows gaps to form
Solution Approach 1:
The grate line separation element is divided into multiple parts: a first grate line separation element and a second grate line separation element that can move relative to each other. This segmentation allows each part to independently compensate for thermal expansion while maintaining tightness, resolving the contradiction between manufacturing simplicity and sealing reliability.
Solution Approach 2:
The second grate line separation element is made movable relative to the first element, allowing dynamic adjustment during thermal expansion. This dynamic capability enables the separation elements to adapt to dimensional changes while preventing gap formation, balancing ease of manufacture with reliable tightness.
2Adaptability or versatility
If the grate lines are allowed to expand freely, then thermal expansion is compensated, but gaps arise that allow uncontrolled primary air inflow
Solution Approach 1:
The movable second grate line separation element acts as an intermediary between the fixed first element and the expanding grate lines. It mediates the thermal expansion by moving relative to the first element while maintaining contact, thereby preventing gap formation and uncontrolled air inflow.
Solution Approach 2:
The system utilizes changes in the positional parameter of the second grate line separation element relative to the first element. This parameter change allows the separation elements to accommodate thermal expansion while maintaining the sealing function, preventing harmful primary air inflow.
3Stability of the object's composition
If a fixed channel covering is used, then the structure is stable, but it cannot accommodate thermal expansion and leads to deformation
Solution Approach 1:
The channel covering is designed with movable components that can adjust their position relative to the channel element during thermal expansion. This dynamic design maintains structural stability while accommodating dimensional changes, preventing deformation.
Solution Approach 2:
The movable second grate line separation element changes its positional parameter in response to thermal expansion, allowing the channel covering to adapt to dimensional changes while maintaining structural integrity and preventing deformation.
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 grate line bordering element effectively prevents uncontrolled primary air inflow into the incineration chamber, reducing thermal loading and maintaining system efficiency by compensating for thermal expansion, thus extending the grate's service life and minimizing maintenance.
Implementation Method 1
the grate lines expand on account of the thermal loading arising during the incineration
Implementation Method 2
the expansion of the grate lines is compensated for by the channel element being compressed
Implementation Method 3
the grate bars are normally cooled by way of a coolant or cooling fluid from below
Implementation Method 4
The locking apparatus is configured here in such a way that it locks the termination element releasably in the channel element
Data Source
AI summary
A grate line bordering element for a combustion grate for burning waste, including a channel element and a channel covering for covering the element including at least one covering element and one termination element with a locking device; wherein the termination element has a support surface which points away from the channel element and a first engaging element which is oriented towards the covering element; the covering element has a support surface which points away from the channel element, a retaining element which is oriented towards the channel element, a second engaging element which is oriented towards the termination element and is configured to receive the first engaging element, and a cut-out which is oriented towards the termination element for receiving the locking device of the closure element; and wherein the locking device is configured in such a way that it locks the termination element releasably in the channel element.