Advancements in Key Technologies for Enhancing Performance of FlexibleContact Seals in Refrigeration Equipment

LIU Guoqiang; ZHAO Tianyang; YAN Gang; YU Jianlin; LIU Peng; WANG Juan; WANG Changyong

doi:10.7652/xjtuxb202401002

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Advancements in Key Technologies for Enhancing Performance of FlexibleContact Seals in Refrigeration Equipment

更新时间：2025-05-13

- Advancements in Key Technologies for Enhancing Performance of FlexibleContact Seals in Refrigeration Equipment
- Vol. 58, Issue 1, Pages: 13-29(2024)
- 作者机构：
  
  1. 西安交通大学制冷与低温工程研究所,西安,710049
  2. 安徽万朗磁塑股份有限公司,合肥,230601
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202401002
  CLC： TB61+1
- Online First：10 January 2024，
  
  Published：2024
- 稿件说明：
移动端阅览
LIU Guoqiang, ZHAO Tianyang, YAN Gang, et al. Advancements in Key Technologies for Enhancing Performance of FlexibleContact Seals in Refrigeration Equipment[J]. 2024, 58(1): 13-29.
DOI：

LIU Guoqiang, ZHAO Tianyang, YAN Gang, et al. Advancements in Key Technologies for Enhancing Performance of FlexibleContact Seals in Refrigeration Equipment[J]. 2024, 58(1): 13-29. DOI： 10.7652/xjtuxb202401002.

摘要

柔性接触式密封机构在制冷装置中起到重要的隔热隔湿作用。针对装配状态下刚-柔多体接触对其性能提升带来的技术挑战

从柔性接触式密封机构技术特点和总体发展出发

综述了影响其性能提升的测量、建模等关键性问题的研究现状

并对未来的发展趋势进行了展望。结果表明:基于反向热平衡的热传递测量技术精度不足

引入滤波算法可降低热流信号噪声波动; 现有示踪气体技术未考虑湿空气在刚柔接触界面中的流动扩散

应运用界面微观检测及接触动力学理论来明确流动型式

构建匹配的示踪源和检测回路; 对柔性接触式密封机构热流固耦合建模研究尚处于空白

仅建立了传热数值模型与流动平均解析方程

可采用数值计算温度、变形场与解析计算渗流参数的迭代算法来建立耦合模型。未来

除开展测量与建模的基础研究外

还需突破“尺寸效应”技术瓶颈

实现密封组件间的良好配合

应用超低导热材料和电磁感应技术

以提升密封机构的隔热隔湿作用。

Abstract

Flexible contact seals are vital components in refrigeration equipment

as they contribute to effective thermal and moisture insulation. Improving the performance of these seals faces technical challenges arising from the assembly state's combination of rigid and flexible multi-contact elements. To enhance their performance

a comprehensive understanding of the technical characteristics and overall development of flexible contact seals is crucial. Therefore

this research summarizes the current state of research on key issues affecting their performance improvement

including measurement and modeling techniques. The future development of seal performance improvement is anticipated. According to the research findings

the heat transfer measurement technology based on reverse heat loss lacks accuracy. However

by incorporating filtering algorithms

the noise fluctuation in heat flux signals can be effectively reduced. The current tracer gas technology fails to consider the flow and diffusion of moist air within the rigid and flexible contact interface. To address this limitation

it is suggested to employ interface microscopic detection and contact dynamics theory

to elucidate the flow pattern. Additionally

constructing a tracer source and detection circuit that are appropriately matched is recommended. Currently

the research on thermal-fluid-solid coupling modeling of flexible contact seals is lacking

leaving a significant knowledge gap. Only a heat transfer numerical model and flow average analytical equation have been developed so far. To address this gap

a coupling model can be established using iterative algorithms for numerical calculations of the temperature and deformation field

along with analytical calculation of seepage parameters. In addition to conducting fundamental research on measurement and modeling

it is crucial to overcome the bottleneck of size effect

achieve good coordination between sealing components

and apply ultra-low thermal conductivity materials and electromagnetic induction technology to improve the thermal and moisture insulation performance of seals.

关键词

Keywords

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