Modular Furnace for Heat Treatment of Large Articles
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Solution Overview
Problem
Existing heat treatment furnaces for large articles in heavy industries face limitations such as being non-reusable, requiring significant construction efforts, limited temperature capabilities due to thermal losses, and difficulties in rapid cooling and displacement of heavy components, leading to non-uniform temperature distribution and structural deformations.
Innovation Solution
A modular furnace composed of prefabricated, self-supporting modules with connecting means to form a closed loop structure, optimized for thermal insulation and weight reduction, allowing for higher operating temperatures up to 1250 °C and easy reconfiguration for different article sizes and geometries, facilitating displacement and rapid cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional fixed furnaces are used for heat treatment of large articles, then the articles can be heat treated, but the furnaces cannot be transported and require significant construction efforts on site
Solution Approach 1:
The furnace is divided into multiple modular sections that can be assembled on-site and disassembled for transport. Each module contains complete functional elements (heating zones, insulation, support structures), enabling the furnace to be rebuilt at different locations for treating various large articles while maintaining full functionality.
2Loss of energy
If traditional furnaces with thick insulation are used to reduce thermal losses, then thermal efficiency improves, but the weight of the furnace increases making it difficult to transport and reposition
Solution Approach 1:
The furnace employs composite insulation structures combining multiple materials with complementary properties. This includes reflective insulation layers, ceramic fiber blankets, and rigid insulation panels arranged in specific configurations that achieve superior thermal performance with reduced overall thickness and weight compared to traditional single-material insulation systems.
3Temperature
If traditional furnaces operate at high temperatures above 635°C, then heat treatment effectiveness improves, but structural deformations occur in the support structures
Solution Approach 1:
The support structures utilize materials and designs specifically optimized for high-temperature environments. This includes high-strength alloys with maintained mechanical properties at elevated temperatures, expanded cooling channels within support beams to dissipate heat, and structural configurations that minimize thermal stress concentration, enabling stable operation at temperatures exceeding 635°C.
4Productivity
If rapid cooling of articles is required after heat treatment, then the heat treatment process is completed efficiently, but the article must be immediately removed from the furnace which is complicated by the size and weight of both the article and furnace
Solution Approach 1:
The furnace incorporates movable sections and adjustable support systems that enable rapid reconfiguration. Critical sections can be quickly opened or repositioned to facilitate fast removal of hot articles for quenching operations, while the modular design allows the furnace itself to be easily disassembled and relocated when needed.
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 modular design enables efficient, uniform heat treatment of large articles across various industries, achieving higher temperatures and improved thermal efficiency while being reusable and easier to handle, thus addressing the limitations of traditional furnaces.
Implementation Method 1
each of the plurality of prefabricated modules (10) comprising at least one sidewall (10a) and an insulating panel (2) intended to remain on the inside of the modular furnace (100)
Data Source
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AI summary
A modular furnace (100) is described for the heat treatment of an article, in particular for the post weld heat treatment (PWHT, stress relieving, solution annealing, tempering, normalization) intended for use, for example, in a chemical or oil or energy production plant, or in heavy industry, comprising a plurality of prefabricated modules (10) intended to be assembled in order to form the modular furnace (100) around or in the vicinity of the article, avoiding displacement of the article on wheels, each of the plurality of prefabricated modules (10) comprising at least one sidewall (10a) and an insulating panel (2) intended to remain on the inside of the modular furnace (100), at least one module (5) of the plurality of prefabricated modules (10) comprising at least two integrated sidewalls (3, 4) extending relative to each other at a predefined angular distance and being provided with a supporting base (3a, 4a) from which the at least two integrated sidewalls (3, 4) vertically extend, each module of the plurality of prefabricated modules (10) comprising connecting means (6) for realizing the structural connection with one or more adjacent modules (10), and said plurality of modules (10) being connected together to form at least one closed loop (50) which starts from one of said at least two sidewalls (3, 4) and terminates in the other one of said at least two sidewalls (3, 4), at least one of said prefabricated modules (60), also known as roof (60), being structurally connected on top of the loop (50), thus defining a closed space for receiving the article.