Author(s)

Tingwei Zhang ¹, Jinlong Meng ¹, Shijun Xu ¹, Kang Kuang ¹, Junbo Xu ¹

Affiliation(s)

¹ Shanghai Aerospace Equipments Manufacturer Co., Ltd, Shanghai, 200245, China

Corresponding Author

Tingwei Zhang

ABSTRACT

As a country with high energy consumption, Chinese demand for clean energy has been increasing due to the gradual improvement of the economy and the living standards of its citizens. Natural gas is one of the most widely used clean energy sources, and the country has vigorously promoted its use to alleviate environmental issues. As a result, China has invested heavily in the construction of LNG receiving terminals and plants in coastal areas. This has led to the rapid development of the LNG industry and placed high demands on the safety and efficiency of LNG-related cryogenic equipment. Due to the extremely low temperature of LNG, it is necessary to consider heat loss and heat intrusion in the design of LNG-related cryogenic equipment. In this study, high-density polyethylene was chosen as the low-temperature sealing material with the aim of controlling heat loss and reducing heat intrusion. Compression, compression rebound, and hardness tests were conducted on high-density polyethylene at temperatures of 25°C, -29°C, -50°C, -110°C, -162°C, and -180°C. The maximum stress values, compressibility, resilience, and hardness of high-density polyethylene at different temperatures were analyzed.

KEYWORDS

Cryogenic valves; high-density polyethylene; cryogenic testing

CITE THIS PAPER

Tingwei Zhang, Jinlong Meng, Shijun Xu, Kang Kuang, Junbo Xu, Research on the Performance of Sealing Materials for Low-Temperature Valve Insulation Layers. Journal of Materials, Processing and Design (2023) Vol. 7: 61-69. DOI: http://dx.doi.org/10.23977/jmpd.2023.070209.

REFERENCES

[1] H. T. Lomanenko. Low Temperature Valve [M]. Beijing: China Machine Press, 1986.
[2] Lu Peiwen. Practical Valve Design Manual [M]. Beijing: China Machine Press, 2002, 9.
[3] Zhang Qiang. Basic properties and modification methods of ultra-high molecular weight polyethylene [J]. Chemical Management, 2016(24): 95.
[4] Du Shixiao. Properties and Applications of ultra-high molecular weight polyethylene [J]. Gansu Metallurgy, 2015, 37(02): 133-134.
[5] GB/T1041-2008 Determination of compressive properties of plastics[S]. 2008.
[6] GB/T 20671.2-2006 Test method for compression and resilience of gasket materials[S]. 2006.
[7] GB/T 2411-2008 Plastics and ebonites are determined using a durometer for indentation hardness (Shore hardness) [S]. 2008. 

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