Leakage performance of labyrinth seal for oil sealing of aero-engine
Experimental investigation has been done to evaluate the leakage performance of labyrinth seal for oil sealing on high-speed sealing test rig at different working and geometric parameters. Typical values of pressure ratio ranging from 1.0 to 2.0 were used and the rotating speed varied from 0 to 30,0...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2019-03-01
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| Series: | Propulsion and Power Research |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212540X18300750 |
| _version_ | 1797725505466662912 |
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| author | Guoqing Li Qian Zhang Zhijun Lei Enliang Huang Hongwei Wu Gang Xu |
| author_facet | Guoqing Li Qian Zhang Zhijun Lei Enliang Huang Hongwei Wu Gang Xu |
| author_sort | Guoqing Li |
| collection | DOAJ |
| description | Experimental investigation has been done to evaluate the leakage performance of labyrinth seal for oil sealing on high-speed sealing test rig at different working and geometric parameters. Typical values of pressure ratio ranging from 1.0 to 2.0 were used and the rotating speed varied from 0 to 30,000 rpm. Dimensionless Taylor number was invited to response the effect of rotation. Oil was injected at the rate from 1.2 L/min to 2.8 L/min to check the sealing capacity. Leakage was measured at different seal configurations including sealing clearance, tooth tip thickness, pitch, teeth number, front inclined angle and oil-throwing angle. Different from gas sealing, the application of oil-throwing tooth in oil sealing attracted much interest as an obvious alternative to the conventional labyrinth seal. A blocking ring was captured during testing, which establishes understanding of underlying flow mechanisms in the clearance and plays an important role in oil sealing. There is a critical Taylor number at which the leakage coefficient drops drastically. After the critical Taylor number, a parabola rule appears. An optimal composition of tooth tip thickness, teeth number, oil-throwing angle and front inclined angle exists where the leakage performance behaves better. Keywords: Labyrinth seal, Leakage, Rotating, Oil sealing, Aero-engine |
| first_indexed | 2024-03-12T10:32:14Z |
| format | Article |
| id | doaj.art-ef955a14ed5a48fa9e71578eff503b36 |
| institution | Directory Open Access Journal |
| issn | 2212-540X |
| language | English |
| last_indexed | 2024-03-12T10:32:14Z |
| publishDate | 2019-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Propulsion and Power Research |
| spelling | doaj.art-ef955a14ed5a48fa9e71578eff503b362023-09-02T09:10:29ZengKeAi Communications Co., Ltd.Propulsion and Power Research2212-540X2019-03-01811322Leakage performance of labyrinth seal for oil sealing of aero-engineGuoqing Li0Qian Zhang1Zhijun Lei2Enliang Huang3Hongwei Wu4Gang Xu5Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, China; Corresponding author.Research Institute of Petroleum Exploration and Development, Beijing 100083, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Engineering and Technology, University of Hertfordshire, Hatfield AL109AB, United KingdomInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, ChinaExperimental investigation has been done to evaluate the leakage performance of labyrinth seal for oil sealing on high-speed sealing test rig at different working and geometric parameters. Typical values of pressure ratio ranging from 1.0 to 2.0 were used and the rotating speed varied from 0 to 30,000 rpm. Dimensionless Taylor number was invited to response the effect of rotation. Oil was injected at the rate from 1.2 L/min to 2.8 L/min to check the sealing capacity. Leakage was measured at different seal configurations including sealing clearance, tooth tip thickness, pitch, teeth number, front inclined angle and oil-throwing angle. Different from gas sealing, the application of oil-throwing tooth in oil sealing attracted much interest as an obvious alternative to the conventional labyrinth seal. A blocking ring was captured during testing, which establishes understanding of underlying flow mechanisms in the clearance and plays an important role in oil sealing. There is a critical Taylor number at which the leakage coefficient drops drastically. After the critical Taylor number, a parabola rule appears. An optimal composition of tooth tip thickness, teeth number, oil-throwing angle and front inclined angle exists where the leakage performance behaves better. Keywords: Labyrinth seal, Leakage, Rotating, Oil sealing, Aero-enginehttp://www.sciencedirect.com/science/article/pii/S2212540X18300750 |
| spellingShingle | Guoqing Li Qian Zhang Zhijun Lei Enliang Huang Hongwei Wu Gang Xu Leakage performance of labyrinth seal for oil sealing of aero-engine Propulsion and Power Research |
| title | Leakage performance of labyrinth seal for oil sealing of aero-engine |
| title_full | Leakage performance of labyrinth seal for oil sealing of aero-engine |
| title_fullStr | Leakage performance of labyrinth seal for oil sealing of aero-engine |
| title_full_unstemmed | Leakage performance of labyrinth seal for oil sealing of aero-engine |
| title_short | Leakage performance of labyrinth seal for oil sealing of aero-engine |
| title_sort | leakage performance of labyrinth seal for oil sealing of aero engine |
| url | http://www.sciencedirect.com/science/article/pii/S2212540X18300750 |
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