Alstom Technology Limited

Simon Ian Hogg

Nigel Anthony Rhodes

Karl Urlichs

Erwin Schoenfeld

Erwin SCHÖNFELD

In sealing arrangementbetween first and second relatively rotatable bodies of a machine such as a steam turbine, a relatively high pressure pexists on one side of the sealing arrangement and a relatively low pressure pexists on the other side. The sealing arrangement comprises a series of sealing elements or units S, S, S, at least one of which comprises a brush seal. A seal bypassing device, preferably comprising a pressure relief valve-limits the pressure drop across the brush seal.

Sealing arrangement using brush seals

In a process for producing leaves (') for a leaf seal, in particular as a seal for a gas turbine, which leaves (&#x2032;) are laterally delimited by a peripheral edge contour and have regions of different thicknesses (d, d), a simplification, without sacrificing precision, is achieved by virtue of the edge contour of the leaves (&#x2032;) being cut out of a metal sheet () by an etching process and the regions of different thicknesses (d, d) also being produced simultaneously as part of the etching process.

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Rugby, United Kingdom

Simon Ian Hogg