Adjustable Throttle for HIP Convection Loop Temperature Control
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Solution Overview
Problem
Current hot isostatic pressing (HIP) technologies face challenges in customizing the temperature control during treatment cycles, particularly in achieving rapid and uniform cooling, which affects the operational efficiency and material properties of treated articles.
Innovation Solution
A pressing arrangement with a pressure vessel featuring an adjustable throttle that controls pressure medium flow through a convection loop, allowing for selective obstruction or facilitation of pressure medium circulation based on the treatment phase, enabling precise temperature control during heating and cooling phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If pressure medium flow is unrestricted in the convection loop, then heating efficiency is improved, but cooling speed is reduced
Solution Approach 1:
The throttle is made adjustable to dynamically change the pressure medium flow rate in the convection loop according to the treatment phase. During heating, the throttle is opened to allow maximum flow for efficient heat transfer. During cooling, the throttle is closed to restrict flow and enable rapid temperature reduction, thus resolving the contradiction between heating efficiency and cooling speed.
Solution Approach 2:
The system changes the flow rate parameter of the pressure medium by adjusting the throttle position. This parameter change allows the same convection loop to operate in different modes: high flow rate for heating and low flow rate for cooling, thereby achieving both efficient heating and rapid cooling without compromising either function.
2Speed
If pressure medium flow is restricted in the convection loop, then cooling speed is improved, but heating efficiency is reduced
Solution Approach 1:
The adjustable throttle enables dynamic adaptation of the convection loop to different operational requirements. During cooling phases, the throttle restricts flow to achieve rapid cooling. During heating phases, it opens to restore efficient heat transfer, thus resolving the contradiction between cooling speed and heating efficiency through temporal separation of flow restriction and freedom.
Solution Approach 2:
The system employs periodic adjustment of the throttle based on the treatment cycle phases. The throttle is adjusted to restrict flow during cooling phases and opened during heating phases, creating a periodic action pattern that alternates between flow restriction and freedom to achieve both rapid cooling and efficient heating as required by the treatment cycle.
3Manufacturing precision
If uniform temperature distribution is achieved through high pressure medium flow, then heating homogeneity is improved, but cooling uniformity is reduced
Solution Approach 1:
The adjustable throttle allows dynamic control of pressure medium flow to achieve different temperature distribution patterns. During heating, high flow rate ensures uniform temperature distribution throughout the chamber. During cooling, the throttle restricts flow to create controlled cooling zones, achieving uniform cooling front progression and preventing thermal shocks, thus resolving the contradiction between heating homogeneity and cooling uniformity.
Solution Approach 2:
The system creates different local quality conditions in the convection loop by adjusting flow rate. During heating, high flow creates uniform conditions throughout. During cooling, restricted flow creates localized cooling zones that progress uniformly through the chamber, achieving cooling uniformity through spatial localization of cooling action rather than global simultaneous cooling.
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
This solution enhances the operational efficiency of the pressing arrangement by allowing for homogeneous heating and rapid cooling, thereby improving the material properties and service life of treated articles.
Implementation Method 1
The furnace chamber is arranged so as to allow for a flow of pressure medium through the load compartment. The furnace chamber comprises at least one pressure medium guiding passage which is in fluid communication with the load compartment so as to form an inner convection loop.
Implementation Method 2
The pressure medium in the inner convection loop is guided through the load compartment and through the at least one pressure medium guiding passage of the furnace chamber and back to the load compartment
Implementation Method 3
The at least one adjustable throttle is configured to selectively impede or obstruct pressure medium flow in at least a portion of the at least one pressure medium guiding passage of the furnace chamber, thereby selectively impeding or obstructing a flow of pressure medium in the inner convection loop.
Data Source
AI summary
A pressing arrangement includes a pressure vessel comprising a furnace chamber. The furnace chamber comprises a load compartment arranged within the furnace chamber. The furnace chamber comprises at least one pressure medium guiding passage in fluid communication with the load compartment to form an inner convection loop, wherein pressure medium in the inner convection loop is guided through the load compartment and through the at least one pressure medium guiding passage and back to the load compartment, or vice versa. The pressure vessel comprises at least one adjustable throttle configured to selectively impede or obstruct pressure medium flow in at least a portion of the at least one pressure medium guiding passage, thereby selectively selectively impeding or obstructing a flow of pressure medium in the inner convection loop.