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Abstract

Polytetrafluoroethylene (PTFE)-faced hydrodynamic thrust bearings have been used for many years in the former Soviet Union and in the People's Republic of China for large hydrogenerator applications. Although there has been some recent interest in other countries, few installations of this sort have previously been reported in Europe or the USA. This paper describes the state of the art and the development and laboratory testing of a prototype set of PTFE pads. Following these trials, a second larger set of thrust pads was designed for use in the pumped-storage hydroelectric power station at Ffestiniog in North Wales. The pads were installed in September 1996 and inspected in May 1997. After nearly 3000 h of operation including 900 separate occasions when the system was started up under load, the pads were found to be in excellent condition. Further hydrogenerator installations of PTFE-faced pads are planned as a result of this successful development.

Keywords

PTFE bearings hydrodynamic bearings thrust bearings hydrogenerators

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References

Barry

B. T.K.

Thwaites

T. J.

Tin and Its Alloys and Compounds, 1983 (Ellis Horwood, Chichester, West Sussex).

Tanaka

Recent analyses and designs of thick-film bearings In New Directions in Tribology, Plenary and Invited Papers from the First World Tribology Conference, London, 8-12 September 1997, pp. 411–433 (Mechanical Engineering Publications, London).

Uno

Andoh

Namba

Mukai

Overview of recent tendencies in thrust bearings for hydrogenerators

J. Jap. Soc. Tribologists, 1997, 42, 129–135.

Soifer

A. M.

Kodnir

D. S.

Baiborodov

Y. I.

Elastic sliding bearing on a base of resilient deformable material combined with fluoroplastic

Izv. Vysshikh Uchebnykh Zavedeniy, Mashinostroenie, 1966, 7.

Shen

W.-Y.

Development of Teflon-lined thrust bearing pads on medium and large hydro-electric units in China. September 1994 (unpublished).

Aleksandrov

A. E.

Use of elastic metal-plastic segments with a fluoric plastic covering on friction surfaces in hydro-turbine thrust bearings

Gidroteknicheskoe Stroit., 1981, 9, 12–14.

Baiborodov

Y. I.

Romanov

A. A.

Experience gained from the operation of elastic metal-plastic pads in the thrust bearing of generating set no. 9 at V. I. Lenin Volzhskaya hydro-electric station

Gidroteknicheskoe Stroit., 1977, 10.

Aleksandrov

A. E.

Plaxtonov

N. G.

On-site investigations of the work of thrust bearings with elastic metalloplastic segments at a high oil temperature

Gidroteknicheskoe Strait., 1990, 11, 20–24.

Kimura

Tanaka

Enomoto

Tribology research in Japan-a state-of-the-art report

Proc. Instn Mech. Engrs, Part J, Journal of Engineering Tribology, 1996, 210, 159–172.

10.

Uno

Andoh

Taguchi

Ashikiwa

Development of compact thrust bearing with high bearing pressure using polytetrafluoroethylene material. In Proceedings of the Tribology Conference, Japanese Society of Tribology, Kana-zawa, October 1994.

11.

Choudhary

T. R.

Rao

Venkat G.

Sethuramiah

Prakash

O. M.

Experimental investigation into replacement of babbitt lining by polymer layers in large thrust bearing. In Abstracts of Papers, First World Tribology Conference, London, 8-12 September 1997, p. 836 (Mechanical Engineering Publications, London).

12.

Uchiyamam

Iwai

Ueno

Friction and wear of PTFE-filled PPS and the role of PTFE filler In New Directions in Tribology, Plenary and Invited Papers from the First World Tribology Conference, London, 8-12 September 1997, pp. 435–442 (Mechanical Engineering Publications, London).

13.

Marx

Jurghans

PV diagrams for high temperature thermoplastic bearings

Wear, 1996, 193, 253–260.

14.

Klochikhin

V. I.

Drozdov

Y. N.

Krasnov

A. P.

Study friction and wear polymer materials under dry sliding friction. In Abstracts of Papers, First World Tribology Conference, London, 8-12 September 1997, p. 837 (Mechanical Engineering Publications, London).

15.

Akagaki

Kato

Kawabata

Friction and lubrication properties of PTFE-based composite in lubricated sliding friction at high speed. In Abstracts of Papers, First World Tribology Conference, London, 8-12 September 1997, p. 317 (Mechanical Engineering Publications, London).

16.

Simmons

J. E. L.

Knox

R. T.

Moss

W. O.

PTFE faced thrust bearings: state of the art review and hydro-generator applications in the UK. In Abstracts of Papers, First World Tribology Conference, London, 8-12 September 1997, p. 208 (Mechanical Engineering Publications, London).

17.

Horner

Simmons

J E L

Advani

S. D.

Measurements of maximum temperature in tilting-pad thrust bearings

Tribology Trans., 1988, 31, 44–53.

The development of PTFE (polytetrafluoroethylene)-faced hydrodynamic thrust bearings for hydrogenerator application in the United Kingdom

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