Double Containment Shell Graphite Insert Thermal Dissipation
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Solution Overview
Problem
Existing double containment shells in magnetic coupling arrangements face issues with inefficient thermal dissipation of the outer pot's heat due to low thermal conductivity, leading to potential deformation, and require complex monitoring and pressure compensation systems, while also lacking adequate safety measures to prevent medium leakage in case of shell damage.
Innovation Solution
A double containment shell with an intermediate space filled with a high thermal conductivity graphite insert, incorporating an insulated thermocouple that can detect leaks and temperature changes, allowing for efficient heat dissipation and safe operation monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If air-filled space is used between inner and outer pots, then device complexity is reduced, but thermal conductivity is insufficient leading to outer pot deformation
Solution Approach 1:
The patent uses a two-layer composite structure: the inner pot is made of metal for mechanical strength and pressure resistance, while the outer pot is made of thermally conductive material (such as graphite or metal) to efficiently dissipate eddy current heat. This composite material approach allows each layer to perform its specialized function, solving the thermal management problem without requiring complex active cooling systems.
2Temperature
If liquid medium is introduced into path network, then thermal conductivity between pots is improved, but device complexity increases due to access requirements and pressure compensation
Solution Approach 1:
The patent extracts the thermal conduction function from a complex liquid-based monitoring system and implements it through direct thermal contact between the inner and outer pots. By using thermally conductive material for the outer pot that contacts the inner pot, the system eliminates the need for liquid medium access, ventilation systems, and pressure compensation mechanisms, significantly reducing device complexity while maintaining effective heat dissipation.
3Strength
If inner and outer pots are connected without gap, then pressure resistance is guaranteed, but thermal dissipation of outer pot heat is insufficient
Solution Approach 1:
The patent employs composite materials with the outer pot constructed from thermally conductive material (graphite or metal) that maintains structural integrity for pressure resistance while simultaneously providing efficient thermal conduction. This material selection resolves the contradiction by making the outer pot serve both structural and thermal management functions without requiring gap connections.
4Temperature
If graphite insert is used, then thermal conductivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by using graphite insert specifically in the intermediate space where thermal conduction is needed, rather than requiring precision throughout the entire assembly. The graphite insert provides thermal management at the critical interface between inner and outer pots, allowing tolerances to be managed locally rather than requiring high precision across all components.
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 graphite insert effectively dissipates heat from the outer pot to the inner pot, and the thermocouple system ensures reliable leak detection and temperature monitoring, preventing deformation and ensuring safe operation by detecting chemical attacks and wire breaks, thus enhancing safety and operational efficiency.
Implementation Method 1
a cylindrical area between the inner pot (1) and the outer pot (2) is filled with an insert (3) made of a material with high thermal conductivity
Implementation Method 2
An insulated thermocouple (4) is introduced into the insert (3)
Data Source
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AI summary
The invention relates to a double split case, particularly for installation in a magnetic clutch arrangement, having an inner case and (1) and an outer case (2), the walls of which enclose an intermediate space (Z) with a cylindrical region, wherein the cylindrical region is filled with an insert, particularly a solid insert made of a material with high thermal conductivity, particularly a graphite insert (3). The double split case is characterised in that the intermediate space (Z) has an insulated thermal element, formed in particular as a thermal element wire (4).