Apparatus for starting turbine plants
AssigneeStal-Laval Turbin AB
InventorsStig Ferm, Ragnar Torstenfelt
Life of this patent
Estimating the term…
Abstract
An apparatus for starting a turbine plant includes tubing or conduits for directing compressed air to the compressor stage of the turbine plant, whereby the turbine plant may be rotated to a speed sufficient for starting. Arranged in parallel with the compressed air tubing or conduits are additional conduits for conveying dry air to the turbine plant during rest or shutdown periods when the turbine plant is inoperative. A valving arrangement permits selective flow of compressed air through the apparatus for starting the turbine plant or of dry air for maintaining desired conditions within the turbine plant during rest or shutdown conditions.
Claims4
A starting appratus for a turbine, said turbine having a compressor with an inlet opening, comprising:
- means for supplying compressed air to said compressor to start said turbine, said means being positioned in front of and spaced from said inlet opening;
- a selectively displaceable cover means surrounding said means for supplying compressed air, for providing a closed air channel between said means for supplying compressed air and said compressor when said cover means is displaced into sealing contact with said inlet opening during turbine starting;
- means connected in parallel with said means for supplying compressed air, for supplying dry air to said turbine to minimize formation of condensation and collection of foreign material in said turbine during shutdown periods;
- and
- means for selectively admitting either said compressed air to said compressor to start said turbine or said dry air to said compressor to protect said turbine during said shutdown periods.
Dependencies are inferred from the claim text.