Abstract
The control of flow characteristics of gas turbine engine (GTE) brush seals is considered as an integral part of the technological process of their manufacture. It is shown that the flow characteristic is the main criterion for assessing seals quality and an indicator of their effectiveness. It has been established that such properties as flexibility and compliance of the sealing package as well as the accuracy of the formation of the inner diameter are the main parameters that ensure high performance of brush seals and affect the air flow rate. Stiffness is considered as the ability of a wire package to resist any deformation. The design of the device determining the stiffness of the package is presented. The parameters affecting changes in stiffness under static conditions and in the operating conditions of the brush seals are indicated. The behavior of compaction fibers during experimental blowing was investigated. A change in the clearance between the contact pair from the supply of pressure in the illuminated area is presented. The designs of installations for controlling the air rate through the seal in the static position of the shaft are presented. The principle of their operation and methods of checking flow characteristics are described. Other design-technological and operational parameters affecting the brush seals effectiveness are noted.
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Acknowledgement
We express gratitude to Zilichikhis S.D. for a significant contribution to the research and technology of creating GTE brush seals.
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Kondratiuk, E., Torba, Y., Grebennikov, M., Yemelianova, L., Khavkina, O. (2020). The Control of GTE Brush Seal Flow Characteristics. In: Tonkonogyi, V., et al. Advanced Manufacturing Processes. InterPartner 2019. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-40724-7_52
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DOI: https://doi.org/10.1007/978-3-030-40724-7_52
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