新型浮动式收敛袋型密封自适应同心性能数值与实验研究

doi:10.7527/S1000-6893.2019.23270

Abstract

Abstract: A new type of floating convergent pocket seal structure is proposed, a numerical solution model of new convergent pocket seal is established, the distribution law of circumferential pressure of new convergent pocket seal is studied, and the influence of import/export pressure ratio and eccentricity on the leakage and floating concentric force of new convergent pocket seal are analyzed. The experimental platform of floating self-concentric seal is designed and constructed. On the basis of the mutual verification of the numerical calculation results and the experimental test results, the influence of import/export pressure ratio and eccentricity on the leakage and adaptive concentric performance of the new floating convergent pocket seal was studied. The results show that, under the working conditions, the floating concentric force of the new convergent pocket seal is 8.9-10.9 times that of the traditional labyrinth seal. Under different import/export pressure ratios and eccentricities, the traditional floating labyrinth seal is always in the initial eccentric position and the adaptive concentric performance is poor. The new floating convergent pocket seal moves in the rotor axis direction, with the increase of import/export pressure ratio and eccentricity, the floating response time is shortened and the adaptive concentric performance is enhanced. The new type of floating convergent pocket seal has good floating response characteristics and adaptive concentric performance.

Key words: floating convergent pocket type seal, eccentricity, floating concentric force, floating response characteristics, adaptive concentric performance

CLC Number:

V233.5

SUN Dan, WANG Ping, ZHAO Huan, ZHANG Guochen, XIAO Zhonghui, MENG Jigang. Numerical and experimental study on adaptive concentric performance of a new type of floating convergent pocket seal[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(3): 423270-423270.

References 24

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Numerical and experimental study on adaptive concentric performance of a new type of floating convergent pocket seal

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