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2019 | OriginalPaper | Buchkapitel

Measurements of Rotordynamic Force Coefficients of Metallic Type Brush Seals

verfasst von : Pascal Jolly, Olivier Bonneau, Mihai Arghir, Florent Cochain, Jérôme Dehouve

Erschienen in: Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM

Verlag: Springer International Publishing

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Abstract

The present paper presents experimental measurements of rotordynamic force coefficients for a multistage arrangement of four identical brush seals. The bristles are metallic, with a lay angle of \(50^{\circ }\) from radial centerline and have an initial radial interference with the shaft of 0.12 mm. According to a radial feeding groove, two pairs of two seals are tested face to face. The supply pressures are 0.54, 0.82, 1.1, 1.75 and 2.4 MPa, with a discharge pressure of 0.4 MPa. The working fluid is water. The rotor is centered and the operating spinning speeds are 50, 3000 and 6000 rpm. For given working conditions (supply pressure and rotor speed), a set of dynamic excitations (two directions and 8 frequencies), imposed to the rotor, provide complex impedances that are used for identifying rotordynamic force coefficients. Results are discussed in order to highlight the respective impact of rotor speed and supply pressure on brush seals performances.

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Fußnoten
1
The stiffnesses of the double conical hydrostatic thrust bearing are high contrary to those of the tested component in order to lower the power of the shakers.
 
2
The power of the shakers is set to a percentage of their total power. Therefore, the obtained amplitudes of displacements of the rotor depend on the direct stiffnesses of the tested component.
 
3
As the fluid is considered as incompressible, rotordynamic coefficients are independent from the exciting frequency.
 
4
For confidentiality purposes, the authors are not allowed to communicate the diameter of the shaft.
 
5
\(\varvec{\Omega }\) is the rotating direction and \(\varTheta \) is the circumferential coordinate according to \(\mathbf X \).
 
6
\(T_B\) corresponds to plugged PT100 positions.
 
Literatur
1.
Zurück zum Zitat Conner, K.J., Childs, D.W.: Rotordynamic and leakage characteristics of a four-stage brush seal. Final report for period October 1988–30 August 1992. Technical report, Turbomachinery Laboratories, Texas A&M University, College Station, Texas (1992) Conner, K.J., Childs, D.W.: Rotordynamic and leakage characteristics of a four-stage brush seal. Final report for period October 1988–30 August 1992. Technical report, Turbomachinery Laboratories, Texas A&M University, College Station, Texas (1992)
2.
Zurück zum Zitat Carlile, J.A., Hendricks, R.C., Yoder, D.A.: Brush seal leakage performance with gaseous working fluids at static and low rotor speed conditions. ASME J. Eng. Gas Turbines Power 115(2), 397–403 (1993)CrossRef Carlile, J.A., Hendricks, R.C., Yoder, D.A.: Brush seal leakage performance with gaseous working fluids at static and low rotor speed conditions. ASME J. Eng. Gas Turbines Power 115(2), 397–403 (1993)CrossRef
3.
Zurück zum Zitat Chupp, R.E., Holle, G.F.: Generalizing circular brush seal leakage through a randomly distributed bristle bed. ASME J. Turbomach. 118(1), 153–161 (1996)CrossRef Chupp, R.E., Holle, G.F.: Generalizing circular brush seal leakage through a randomly distributed bristle bed. ASME J. Turbomach. 118(1), 153–161 (1996)CrossRef
4.
Zurück zum Zitat Chupp, R.E., Hendricks, R.C., Lattime, S.B., Steinetz, B.M.: Sealing in turbomachinery. J. Propul. Power 22(2), 313–349 (2006)CrossRef Chupp, R.E., Hendricks, R.C., Lattime, S.B., Steinetz, B.M.: Sealing in turbomachinery. J. Propul. Power 22(2), 313–349 (2006)CrossRef
5.
Zurück zum Zitat Pugachev, A.O., Deckner, M.: Experimental and theoretical rotordynamic stiffness coefficients for a three-stage brush seal. Mech. Syst. Signal Process. 31, 143–154 (2012)CrossRef Pugachev, A.O., Deckner, M.: Experimental and theoretical rotordynamic stiffness coefficients for a three-stage brush seal. Mech. Syst. Signal Process. 31, 143–154 (2012)CrossRef
6.
Zurück zum Zitat Raben, M., Friedrichs, J., Flegler, J.: Brush seal frictional heat generation—test rig design and validation under steam environment. ASME J. Eng. Gas Turbines Power 139(3), 032,502–032,502-9 (2016) Raben, M., Friedrichs, J., Flegler, J.: Brush seal frictional heat generation—test rig design and validation under steam environment. ASME J. Eng. Gas Turbines Power 139(3), 032,502–032,502-9 (2016)
7.
Zurück zum Zitat Aslan-zada, F.E., Mammadov, V.A., Dohnal, F.: Brush seals and labyrinth seals in gas turbine applications. Proc. IMechE Part A J. Power Energy 227(2), 216–230 (2012)CrossRef Aslan-zada, F.E., Mammadov, V.A., Dohnal, F.: Brush seals and labyrinth seals in gas turbine applications. Proc. IMechE Part A J. Power Energy 227(2), 216–230 (2012)CrossRef
8.
Zurück zum Zitat Hildebrandt, M., Schwitzke, C., Bauer, H.: Experimental investigation on the influence of geometrical parameters on the frictional heat input and leakage performance of brush seals. ASME J. Eng. Gas Turbines Power (2017). https://doi.org/10.1115/1.4038767 Hildebrandt, M., Schwitzke, C., Bauer, H.: Experimental investigation on the influence of geometrical parameters on the frictional heat input and leakage performance of brush seals. ASME J. Eng. Gas Turbines Power (2017). https://​doi.​org/​10.​1115/​1.​4038767
10.
Zurück zum Zitat Pugachev, A.O., Gaszner, M., Georgakis, C., Cooper, P.: Segmentation effects on brush seal leakage and rotordynamic coefficients. ASME J. Eng. Gas Turbines Power 138(3), 032,501–032,501-9 (2015) Pugachev, A.O., Gaszner, M., Georgakis, C., Cooper, P.: Segmentation effects on brush seal leakage and rotordynamic coefficients. ASME J. Eng. Gas Turbines Power 138(3), 032,501–032,501-9 (2015)
11.
Zurück zum Zitat Charles, S., Bonneau, O., Frêne, J.: Determination of the discharge coefficient of a thin-walled orifice used in hydrostatic bearings. ASME J. Tribol. 127(3), 679–684 (2005)CrossRef Charles, S., Bonneau, O., Frêne, J.: Determination of the discharge coefficient of a thin-walled orifice used in hydrostatic bearings. ASME J. Tribol. 127(3), 679–684 (2005)CrossRef
12.
Zurück zum Zitat Jolly, P., Hassini, A., Arghir, M., Bonneau, O.: Experimental and theoretical rotordynamic coefficients of smooth and round-hole pattern water fed annular seals. In: Proceedings of ASME Turbo Expo 2014, Turbine Technical Conference and Exposition, 16–20 June, Düsseldorf, Germany (2014) Jolly, P., Hassini, A., Arghir, M., Bonneau, O.: Experimental and theoretical rotordynamic coefficients of smooth and round-hole pattern water fed annular seals. In: Proceedings of ASME Turbo Expo 2014, Turbine Technical Conference and Exposition, 16–20 June, Düsseldorf, Germany (2014)
13.
Zurück zum Zitat Childs, D.W., Mclean, J.E., Zhang, M., Arthur, S.P.: Rotordynamic performance of a negative-swirl brake for a tooth-on-stator labyrinth seal. ASME J. Eng. Gas Turbines Power 138(6), 062,505–062,505-8 (2015) Childs, D.W., Mclean, J.E., Zhang, M., Arthur, S.P.: Rotordynamic performance of a negative-swirl brake for a tooth-on-stator labyrinth seal. ASME J. Eng. Gas Turbines Power 138(6), 062,505–062,505-8 (2015)
Metadaten
Titel
Measurements of Rotordynamic Force Coefficients of Metallic Type Brush Seals
verfasst von
Pascal Jolly
Olivier Bonneau
Mihai Arghir
Florent Cochain
Jérôme Dehouve
Copyright-Jahr
2019
DOI
https://doi.org/10.1007/978-3-319-99262-4_24

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