HIP End-Closure Heat Exchanger for Uniform Rapid Cooling
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Solution Overview
Problem
Existing hot isostatic pressing (HIP) processes face challenges in achieving rapid and homogeneous cooling of articles, which affects metallurgical properties and prolongs treatment cycles.
Innovation Solution
A pressing arrangement with a heat exchanging element in the end closures, allowing pressure medium to circulate through a heat exchanging element with cooling medium circuits, facilitating efficient cooling of the pressure medium and articles within the load compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If rapid cooling of the pressure medium is implemented during the cooling phase, then the cooling rate of the article increases, but large temperature variations within the load compartment occur
Solution Approach 1:
The load compartment is divided into multiple zones with independent cooling control. Multiple heat exchanging elements are distributed throughout the compartment, each capable of being controlled independently to achieve both rapid cooling and temperature uniformity simultaneously.
Solution Approach 2:
Different regions of the load compartment are provided with different cooling characteristics. The heat exchanging elements are strategically positioned and controlled to provide localized cooling where needed, ensuring rapid overall cooling while maintaining temperature uniformity across different areas.
2Productivity
If the cooling phase duration is reduced, then productivity increases, but temperature uniformity within the load compartment deteriorates
Solution Approach 1:
The cooling process is made continuous and efficient through the coordinated operation of multiple heat exchanging elements. By having multiple zones cooling simultaneously rather than sequentially, the overall cooling time is reduced while maintaining temperature uniformity throughout the load compartment.
Solution Approach 2:
The cooling system is made dynamically controllable with independent regulation of each heat exchanging element. This allows the system to adapt cooling rates in different zones and at different times, achieving both rapid cooling and temperature uniformity within the reduced treatment cycle time.
3Speed
If heat exchanging elements are added to the pressing arrangement, then cooling efficiency improves, but device complexity increases
Solution Approach 1:
The heat exchanging elements are designed to serve multiple functions: they can provide rapid cooling during the cooling phase, and can be integrated into the existing pressure and heating systems. This multi-functionality improves cooling efficiency while minimizing the increase in overall system complexity.
Solution Approach 2:
The heat exchanging elements are integrated with the existing structure of the load compartment and pressure vessel. By merging the cooling function with the existing mechanical structure, the additional complexity is minimized while achieving significant improvements in cooling efficiency.
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 arrangement enables rapid cooling of articles during HIP, reducing treatment cycles and maintaining uniform temperature distribution, thereby improving metallurgical properties and operational efficiency.
Implementation Method 1
a heat exchanging element arranged in the top end closure or in the bottom end closure. The heat exchanging element comprises at least one circuit for allowing a circulation of cooling medium within the at least one circuit of the heat exchanging element for a cooling of pressure medium arranged to pass through the top end closure or the bottom end closure
Implementation Method 2
pressure medium is arranged to pass through the load compartment... rapid cooling of articles within a load compartment of the pressing arrangement
Data Source
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AI summary
A pressing arrangement (100) is disclosed. The pressing arrangement (100) comprises a pressure vessel (2) comprising a pressure cylinder (1), a top end closure (3) and a bottom end closure (9), a furnace chamber (18) for heating a pressure medium, a plurality of guiding passages (10, 11, 13), a load compartment (19) configured for holding at least one article to be treated, and at least one flow generator (30, 32) for circulating pressure medium within the pressure vessel. The pressing arrangement further comprises a heat exchanging element (170) arranged in the top end closure or in the bottom end closure. The heat exchanging element comprises at least one passage for allowing a flow of pressure medium through the heat exchanging element, and at least one circuit for allowing a circulation of cooling medium within the at least one circuit for a cooling of the pressure medium.