Experimental study on the sealing clearance between the labyrinth sealing displacer and cylinder in the 10 K G-M refrigerator

Hao, X.H., Ju, Y.L. and Lu, Y.J. (2011) Experimental study on the sealing clearance between the labyrinth sealing displacer and cylinder in the 10 K G-M refrigerator. Cryogenics, 51(5), pp. 203-208. (doi: 10.1016/j.cryogenics.2011.02.002)

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Abstract

The labyrinth sealing displacer has been optimal designed to improve the operating stability and life-time of 10 K G-M refrigerator. The displacer was made of stainless steel 304 or inconel 718, coated with PTFE on its outer surface. Compared to the traditional piston-ring sealing displacer, the sealing clearance between the ridge of the labyrinth sealing displacer and cylinder is critical to the cooling performance of the G-M refrigerator. The displacers with different sealing clearances were experimentally studied, and the optimal clearance was given. The effects of the materials of the displacers and the system charge pressures on the performance of the labyrinth sealing were also tested and analyzed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lu, Dr Yiji
Authors: Hao, X.H., Ju, Y.L., and Lu, Y.J.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Cryogenics
Publisher:Elsevier
ISSN:0011-2275
ISSN (Online):1879-2235
Published Online:24 February 2011

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