编织热密封组件的高温密封性能

doi:10.13475/j.fzxb.20210203808

纺织学报 ›› 2021, Vol. 42 ›› Issue (10): 84-91.doi: 10.13475/j.fzxb.20210203808

编织热密封组件的高温密封性能

刘俊立¹^,², 徐志高¹(), 张峰²^,³, 田干¹, 杨正伟¹, 王玉³

1.火箭军工程大学导弹工程学院, 陕西西安 710025
2.北京星际荣耀科技有限责任公司, 北京 100176
3.陕西星际荣耀空间科技有限责任公司, 陕西西安 710100

收稿日期:2021-02-15 修回日期:2021-05-17 出版日期:2021-10-15 发布日期:2021-10-29
通讯作者: 徐志高
作者简介:刘俊立(1997—),男,硕士生。主要研究方向为高超声速飞行器用高温动密封技术。
基金资助:
国家自然科学基金项目(92060106);国家自然科学基金项目(52075541)

High-temperature sealing performance of braided heat-sealed components

LIU Junli¹^,², XU Zhigao¹(), ZHANG Feng²^,³, TIAN Gan¹, YANG Zhengwei¹, WANG Yu³

1. College of Missile Engineering Institute, Rocket Force University of Engineering, Xi'an, Shaanxi 710025, China
2. Beijing Interstellar Glory Technology Co., Ltd., Beijing 100176, China
3. Shaanxi Interstellar Glory Space Technology Co., Ltd., Xi'an, Shaanxi 710100, China

Received:2021-02-15 Revised:2021-05-17 Published:2021-10-15 Online:2021-10-29
Contact: XU Zhigao

摘要/Abstract

摘要：

为研究编织热密封组件直接应用于高温工况环境下的密封性能,选用三维双股编织绳和双层三股编织弹簧管2种密封组件。基于多孔介质的Kozeny-Carman方程,建立了2种密封组件的密封泄漏模型。采用高温密封试验分别对其进行了高温密封性能测试,得到了2种高温密封组件在不同压差、不同工况温度环境下的泄漏量,验证了模型的有效性。研究结果表明:三维双股编织绳和双层三股编织弹簧管密封组件的泄漏量均随着压差的不断增加而逐渐变大,而随着温度的增加逐渐降低。在相同工况条件下,双层三股编织弹簧管密封组件的泄漏量均小于三维双股编织绳。研究结果可为适用于高温环境密封结构的选择提供参考依据。

关键词: 热密封组件, 编织结构, 密封泄漏模型, 高温密封性能

Abstract:

In order to study the sealing performance of braided heat-sealing components directly applied to high-temperature environments, two types of sealing components are selected: three-dimensional double-strand braided rope and double-layer three-strand braided spring tube. Based on the Kozeny-Carman equation of porous media, two sealing leakage models of the sealing components are established. The high-temperature sealing performance was tested separately by high-temperature sealing test, and the leakage of two high-temperature sealing components under different pressure differences and different working conditions and temperatures were obtained, which verified the validity of the model. The research results show that the leakage of the sealing components of the three-dimensional double-strand braided rope and the double-layer three-stranded spring tube gradually increases with the continuous increase of the pressure difference, and gradually decreases with the increase of the temperature. Under the same working conditions, the leakage of the double-layer three-strand braided spring tube seal assembly is less than that of the three-dimensional double-strand braided rope. The research results can provide a reference for the selection of sealing structures suitable for high-temperature environments.

Key words: heat sealing component, braided structure, sealing leakage model, high temperature sealing performance

中图分类号:

TS10

刘俊立, 徐志高, 张峰, 田干, 杨正伟, 王玉. 编织热密封组件的高温密封性能[J]. 纺织学报, 2021, 42(10): 84-91.

LIU Junli, XU Zhigao, ZHANG Feng, TIAN Gan, YANG Zhengwei, WANG Yu. High-temperature sealing performance of braided heat-sealed components[J]. Journal of Textile Research, 2021, 42(10): 84-91.

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密封组件	密封组件结构	材料	编织方式
3DDSBR	编织绳	石英纤维棉	三维编织
DLTSBST	外层护套	陶瓷纤维	WallStent
	内层护套	陶瓷纤维	WallStent
	编织弹簧管	GH 141	Strecker
	内部填芯	陶瓷纤维棉	—

编织热密封组件的高温密封性能

High-temperature sealing performance of braided heat-sealed components

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