Patent · US Active

Method of sealing a gap using multistage brush seal

US8066286B2 · kind B2 · utility

2Cited by

10References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Matthias Neef · Wetter (Ruhr), DE
Norbert Sürken · Neheim, DE
Karl Urlichs · Haag in Oberbayern, DE

Key dates

Filing date	Jan 23, 2007
Grant date	Nov 29, 2011
Priority date	—
Expiry date	Jan 3, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2240/56
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a multistage brush seal of a steam turbine that comprises several brushes which in turn comprise several bristles. A plurality of brushes are arranged next to each other and are configured different from each other with regard to the length of the bristles, or to the bristle thicknesses, or to the bristle rigidities, or to the lay angle of the bristles, or to the height of a first guard ring in front of or behind the brush seal in the flow direction, which delimits this brush seal, or to a gap between the bristles and an opposing surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.