... focusing on the application assessment of damper seals and swirl brakes in high-pressure steam turbines. This paper presents a comprehensive assessment and comparison on the rotordynamic characteristics of a staggered labyrinth seal (LABY), a fully partitioned pocket damper seal (FPDS), and a hole-pattern...

...Wenfeng Xu; Zeming Wang; Dan Sun; Guozhe Ren; Yu Li; Dezheng Lu Honeycomb bushing wear has a significant effect on the leakage characteristics of the labyrinth seal. In this paper, four kinds of honeycomb bushing labyrinth seals was designed and processed. The leakage characteristics of honeycomb...

..., the temperature fluctuation in the rubbing event is not as significant as the large one. 1 Corresponding author. e-mail:  xinyan@mail.xjtu.edu.cn e-mail:  1542281117@qq.com e-mail:  hekun@mail.xjtu.edu.cn 14 07 2021 25 01 2022 29 03 2022 labyrinth seal chamfered fin rubbing...

...Wensong Xue; Zhi Fang; Zhigang Li; Jun Li Annular gas seals used in turbomachinery are key elements to ensure a high machine efficiency, due to their effect on the leakage flow. As the most common type of annular gas seals, labyrinth seal is widely used as end and center balance drum, interstage...

...Xin Yan; Xinbo Dai The wear behaviors of the rectangular labyrinth seal fin against high-speed rotor were experimentally investigated on the incursion test rig. The material losses, worn geometries, frictional temperature distributions, and contact forces of labyrinth fin in rubbing events were...

..., and the labyrinth seal is one of the choices. A typical labyrinth seal consists of a surface with teeth and a smooth surface. The teeth are either on the rotor or the stator. To protect the machine, one side (either the teeth or the smooth surface) is made of a material that can be safely sacrificed during a rub...

... labyrinth seals (i.e., with straight fins and chamfered fins) in rubbing events. With the existing experimental data, FEA methods for contacting simulations and CFD methods for leakage rate and flow pattern predictions are carefully examined. The wear characteristic and leakage performance between labyrinth...

...Min Zhang; Dara W. Childs With the increasing demand of the oil and gas industry, many pump companies are developing multiphase pumps, which can handle liquid–gas flow directly without separating the liquid from a mixed flow. The see-through labyrinth seal is one of the popular types of noncontact...

...Min Zhang; Dara W. Childs; Dung L. Tran; Hari Shresth The labyrinth seal is one of the most popular noncontact annular seals used in centrifugal compressors to improve machine efficiency by reducing the secondary flow leakage. Reducing the radial clearance C r can effectively decrease the seal's...

...Kali Charan Nayak One of the basic assumptions of the traditional labyrinth seal leakage calculation is that rotation has minimal or no effect on seal leakage. With the advancement of gas turbine technology, to achieve high performance, seals are run at tight clearances and very high rotational...

...Weihang Li; Shaowen Chen; Hongyan Liu; Zhihua Zhou; Songtao Wang Labyrinth seals on both rotor casing and blade tip as an effective method to control the leakage flowrate of the shroud and improve aerodynamic performances in a transonic turbine stage are investigated in this study. Compared...

..., 2013; published online December 10, 2013. Editor: David Wisler. 15 10 2013 26 10 2013 From the above discussion (Figs. 22–35 ), we can conclude that: (1) The mushrooming damage has a pronounced effect on the heat transfer characteristic in the straight-through labyrinth seal...

... Orifices Based on the Incidence Angle ,” Philos. Trans. R. Soc. London, Ser. A 0962-8428 , 219 , pp. 333 – 352 . Morrison , G. L. , Rhode , D. L. , Cogan , K. C. , Chi , D. , and Demko , J. , 1983 , “ Labyrinth Seals for Incompressible Flow ,” Final Report No. NASA-CR...