DOI: https://doi.org/10.15587/1729-4061.2018.140912

Studying and designing improved coatings for labyrinth seals of gas­turbine engine turbines

Viktor Greshta, Daria Tkach, Eugene Sotnikov, Dmytro Pavlenko, Olexandr Klymov

Abstract


An analysis of improving efficiency of aircraft engine turbines by means of improvement of composition of sealing coatings used in labyrinth seals was made. It was established that a number of contradictory requirements to properties of such coatings are imposed at the initial stage of engine running-in and during further operation. Main types of damage of above coatings used in the design of labyrinth seals during operation of gas turbine engines were shown. In connection with the necessity of raising temperature of gases in turbines of aircraft engines, it was proposed to additionally dope the serial nickel-based coatings with yttrium-containing master alloys. The results of study of influence of doping of the wearing-in sealing coatings on operating properties in conditions of action of a high-temperature gas flow were presented. It was found that doping of the KNA-82 serial coating with a multicomponent Co-Ni-Cr-Al-Y master alloy is the most rational solution.

It was established that the use of the developed coating in a temperature range of 1,100...1,200 °C makes it possible to reduce specific consumption of fuel by aircraft engines by improving turbine efficiency and prevent wear of the end faces of ridges of the rotor labyrinth seal. Based on simulation of flow in the labyrinth seal clearance by numerical method, it was shown that the use of the developed coating materials in seals of the compressor turbine and the free turbine makes it possible to reduce amount of cooling air leakage into the turbine air-gas channel by reducing wear of tops of the labyrinth rotor seal ridge

References


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Greshta, V. L., Tkach, D. V., Klimov, A. V., Sotnikov, E. G., Lekhovicer, Z. V., Stepanova, L. P. (2016). Issledovanie fazovogo sostava zharostoykih uplotnitel'nyh pokrytiy, primenyaemyh v GTD. Aviacionno-kosmicheskaya tekhnika i tekhnologiya, 8, 113–121.

Umanskiy, A. P., Polyarus, E. N., Kostenko, A. D., Terent'ev, A. E. (2012). Vliyanie sostava pokrytiy na osnove intermetallidov nikelya na mekhanizmy ih iznashivaniya v usloviyah vysokotemperaturnyh triboispytaniy. Problemy trybolohiyi, 3, 123–127.

Makarov, A., Zaytsev, N. (2015). Engineering and theoretical problems of labyrinth seals application in high-speed rotor machines. Perm National Research Polytechnic University Aerospace Engineering Bulletin, 42, 61–81. doi: https://doi.org/10.15593/2224-9982/2015.42.05

Reznik, S. B., Bandurko, E. A. (2013). Raschetno-eksperimental'naya ocenka effektivnosti razlichnyh tipov labirintnyh uplotneniy. Vestnik dvigatelestroeniya, 10 (107), 189–193.


GOST Style Citations


Kofman V. M. Opredelenie koefficienta poleznogo deystviya turbiny GTD po parametram neravnomernyh gazovyh potokov // Vestnik Ufimskogo gosudarstvennogo aviacionnogo tekhnicheskogo universiteta. 2012. Vol. 16, Issue 5 (50). P. 39–40.

Sporer D., Wilson S., Dorfman M. Ceramics for Abradable Shroud Seal Applications // Ceramic Engineering and Science Proceedings. 2010. P. 39–54. doi: https://doi.org/10.1002/9780470584293.ch5 

Sealing in turbomachinery / Chupp R. E., Hendricks R. C., Lattime S. B., Steinetz B. M. // NASA/TM-2006-214341. 2006. 62 p.

Bondarchuk P. V., Tisarev A. Yu., Lavrushin M. V. Razrabotka metodiki rascheta sistemy upravleniya radial'nymi zazorami v turbine GTD // Vestnik Samarskogo gosudarstvennogo aerokosmicheskogo universiteta. 2012. Issue 3 (34). P. 272–278.

Inozemcev A. A., Bazhin S. V., Snitko M. A. Voprosy optimizacii radial'nyh zazorov TVD aviacionnogo GTD // Vestnik dvigatelestroeniya. 2012. Issue 2. P. 149–154.

Inozemcev A. A., Sandrackiy V. L. Gazoturbinnye dvigateli. Moscow, 2006. 1204 p.

Poteri KPD v turbine vysokogo davleniya s bandazhirovannoy rabochey lopatkoy / Komarov O. A., Dmitriev S. Yu., Dautov D. R., Ossiala V. B. A. // Vestnik Ufimskogo gosudarstvennogo aviacionnogo tekhnicheskogo universiteta. 2017. Vol. 21, Issue 2 (76). P. 70–75.

Ma X., Matthews A. Evaluation of abradable seal coating mechanical properties // Wear. 2009. Vol. 267, Issue 9-10. P. 1501–1510. doi: https://doi.org/10.1016/j.wear.2009.03.044 

Tribological behaviors of turbofan seal couples from friction heat perspective under high-speed rubbing condition / Gao S., Xue W., Duan D., Li S. // Friction. 2016. Vol. 4, Issue 2. P. 176–190. doi: https://doi.org/10.1007/s40544-016-0114-x 

Ekspluatacionnye povrezhdeniya turboreaktivnyh dvuhkonturnyh aviacionnyh dvigateley s forsazhnoy kameroy sgoraniya / Karpinos B. S., Korovin A. V., Lobun'ko A. P., Vedishcheva M. Yu. // Vestnik dvigatelestroeniya. 2014. Issue 1.

Fois N., Watson M., Marshall M. The influence of material properties on the wear of abradable materials // Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 2016. Vol. 231, Issue 2. P. 240–253. doi: https://doi.org/10.1177/1350650116649528 

Hardwicke C. U., Lau Y.-C. Advances in Thermal Spray Coatings for Gas Turbines and Energy Generation: A Review // Journal of Thermal Spray Technology. 2013. Vol. 22, Issue 5. P. 564–576. doi: https://doi.org/10.1007/s11666-013-9904-0 

Modelling route for abradable coatings / Faraoun H. I., Seichepine J. L., Coddet C., Aourag H., Zwick J., Hopkins N. et. al. // Surface and Coatings Technology. 2006. Vol. 200, Issue 22-23. P. 6578–6582. doi: https://doi.org/10.1016/j.surfcoat.2005.11.105 

Voevodin A. A., Erohin A. L., Spasskiy S. E. Model' vybora skhemy mnogosloynogo ionno-plazmennogo pokrytiya na osnove rascheta napryazheniy v ego sloyah // Poverhnost'. Fizika, himiya, mekhanika. 1991. Issue 9. P. 78–84.

Dvirnik Ya. V., Pavlenko D. V. Metodika modelirovaniya techeniya potoka v osevom kompressore GTD chislennym metodom // Vestnik dvigatelestroeniya. 2014. Issue 1. P. 34–40.

Chislenniy analiz vozmozhnostey 2-D i 3-D metodov proektirovaniya osevyh turbomashin / Koval' V. A., Anurov Yu. M., Belyaeva S. O., Kovaleva E. A., Yaroslavcev S. V. // Eastern-European Journal of Enterprise Technologies. 2009. Vol. 4, Issue 5 (40). P. 12–18. URL: http://journals.uran.ua/eejet/article/view/21063/19508

Otsinka ekspluatatsiynoi nadiinosti teplozakhysnykh ushchilniuvalnykh pokryttiv detalei hazoturbinnykh dvyhuniv / Bielikov S. B., Hreshta V. L., Tkach D. V. et. al. // Novi materialy i tekhnolohiyi v metalurhii ta mashynobuduvanni. 2017. Issue 2. P. 14–17.

Issledovanie fazovogo sostava zharostoykih uplotnitel'nyh pokrytiy, primenyaemyh v GTD / Greshta V. L., Tkach D. V., Klimov A. V., Sotnikov E. G., Lekhovicer Z. V., Stepanova L. P. // Aviacionno-kosmicheskaya tekhnika i tekhnologiya. 2016. Issue 8. P. 113–121.

Vliyanie sostava pokrytiy na osnove intermetallidov nikelya na mekhanizmy ih iznashivaniya v usloviyah vysokotemperaturnyh triboispytaniy / Umanskiy A. P., Polyarus E. N., Kostenko A. D., Terent'ev A. E. // Problemy trybolohiyi. 2012. Issue 3. P. 123–127.

Makarov A., Zaytsev N. Engineering and theoretical problems of labyrinth seals application in high-speed rotor machines // Perm National Research Polytechnic University Aerospace Engineering Bulletin. 2015. Issue 42. P. 61–81. doi: https://doi.org/10.15593/2224-9982/2015.42.05 

Reznik S. B., Bandurko E. A. Raschetno-eksperimental'naya ocenka effektivnosti razlichnyh tipov labirintnyh uplotneniy // Vestnik dvigatelestroeniya. 2013. Issue 10 (107). P. 189–193.







Copyright (c) 2018 Viktor Greshta, Daria Tkach, Eugene Sotnikov, Dmytro Pavlenko, Olexandr Klymov

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061