Thermo-elasto bulk-flow model for labyrinth seals in steam turbines

被引：39

作者：

Cangioli, Filippo ^{[1
]}

Chatterton, Steven ^{[1
]}

Pennacchi, Paolo ^{[1
]}

Nettis, Leonardo ^{[2
]}

Ciuchicchi, Lorenzo ^{[3
]}

机构：

[1] Politecn Milan, Via Giuseppe La Masa 1, Milan, Italy

[2] Baker Hughes, Via Felice Matteucci 2, Florence, Italy

[3] Baker Hughes, 480 Allee Gustave Eiffel, Le Creusot, France

来源：

TRIBOLOGY INTERNATIONAL | 2018年 / 119卷

关键词：

D O I：

10.1016/j.triboint.2017.11.016

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Over the last few decades, the increasing demand on efficiency and performance for steam turbines has resulted in OEMs operating machines near critical conditions of their structural and thermal capabilities. In this paper, a new thermo-elasto bulk-flow model for labyrinth seals has been introduced. The model includes the bulk-flow model for estimating the dynamic coefficients, heat transfer model for evaluating the temperature distribution in the rotating and stationary parts and structural-mechanics model for calculating the radial growth. By considering a staggered labyrinth seal installed in the balancing drum of a steam turbine, different operating conditions, such as the boundary pressure, rotational speed and inlet pre-swirl ratio, as well as the stability of the seal are investigated in this study.

引用

页码：359 / 371

页数：13

共 27 条

[1] Alford J., 1964, ASME J. Eng. Gas Turbines Power, V86, P141
[2] [Anonymous], 2009, FLUID MECH-SOV RES
[3] Rotordynamic coefficients of circumferentially-grooved liquid seals using the averaged Navier-Stokes equations
Arghir, M
Frene, J
[J]. JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 1997, 119 (03): : 556 - 567
[4] Steam-whirl analysis in a high pressure cylinder of a turbo generator
Bachschmid, Nicolo
Pennacchi, Paolo
Vania, Andrea
[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2008, 22 (01) : 121 - 132
[5] Cangioli F., 2016, P ASME TURB EXP 2016
[6] Cangioli F., 2017, P ASME TURB EXP 2017
[7] On the Thermodynamic Process in the Bulk-Flow Model for the Estimation of the Dynamic Coefficients of Labyrinth Seals
Cangioli, Filippo
Pennacchi, Paolo
Vannini, Giuseppe
Ciuchicchi, Lorenzo
Vania, Andrea
Chatterton, Steven
Phuoc Vinh Dang
[J]. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2018, 140 (03):
[8] Effect of energy equation in one control-volume bulk-flow model for the prediction of labyrinth seal dynamic coefficients
Cangioli, Filippo
Pennacchi, Paolo
Vannini, Giuseppe
Ciuchicchi, Lorenzo
[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2018, 98 : 594 - 612
[9] Childs D, 1988, J VIB ACOUST STRESS, V110
[10] Childs D., 1986, T ASME, V108, P325, DOI DOI 10.1115/1.3239907

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