Heat Exchanger Sealing Ring with Differential Compression
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Solution Overview
Problem
The deformation of the sealing portion caused by the positioning portion in the sealing ring affects the sealing performance of the heat exchanger when high pressure is applied, leading to reduced sealing effectiveness.
Innovation Solution
A sealing ring design with a first main body portion and a second main body portion, where the compression amount of the first main body portion is greater than that of the second, positioned in a groove, reducing deformation risk and enhancing uniform force distribution for improved sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the positioning portion presses the sealing portion to secure the sealing ring, then the sealing ring is positioned and sealed, but the sealing portion deforms and sealing performance deteriorates
Solution Approach 1:
The sealing ring is divided into two distinct main body portions: a first main body portion for sealing contact and a second main body portion for positioning. This segmentation allows each portion to perform its specific function independently - the first portion maintains sealing contact without deformation while the second portion provides positioning support, thereby resolving the contradiction between positioning stability and sealing performance
Solution Approach 2:
Different portions of the sealing ring are given different structural properties and functions. The first main body portion is designed with sealing surface characteristics for optimal sealing contact, while the second main body portion is designed with positioning characteristics. This local differentiation ensures that the sealing portion does not deform under positioning pressure, maintaining both positioning accuracy and sealing performance
2Stress or pressure
If high pressure is applied to the heat exchange fluid, then flow pressure demand is met, but the sealing portion deforms under pressure affecting sealing effectiveness
Solution Approach 1:
The sealing ring design accommodates dynamic pressure conditions by distributing compression forces differently across its two main body portions. Under high fluid pressure, the first main body portion maintains stable sealing contact while the second main body portion absorbs positioning stresses, allowing the system to dynamically respond to pressure changes without compromising sealing effectiveness
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A heat exchanger, comprising a housing, a heat exchange core and a sealing ring. The housing is provided with an accommodating cavity. The heat exchange core is located in the accommodating cavity. The housing comprises a first housing and a second housing. The first housing comprises a first wall portion, and the second housing comprises a second wall portion. The first wall portion comprises a grooved portion. The grooved portion is provided with a groove and an opening. The sealing ring comprises a first main body portion and a second main body portion. The second main body portion is located in the groove. The first main body portion comprises a first sealing portion and a second sealing portion. The first sealing portion abuts against the first wall portion, and the second sealing portion abuts against the second wall portion. The amount that the first main body portion is compressed is greater than the amount that the second main body portion is compressed. The reduction of the amount that the second main body portion is compressed allows same to be mainly used for positioning, thereby reducing the possibility of deformation of the first main body portion caused by the second main body portion pressing on the first main body portion. This allows the first main body portion to bear pressure more evenly, thus increasing the sealing effect between the first housing and the second housing.