Patent ID: 9574453
Date: 2017-02-21
CPC Classifications: F01D,F05D,Y10T

Claim:
1. A steam turbine comprising: a housing comprising an inlet configured to discharge a primary steam flow into said housing; a stator coupled to said housing; a rotor coupled to said housing and located within said stator, said rotor and said stator define a primary flow path there between, said primary flow path is in flow communication with the primary steam flow, said rotor comprising a rotor wheelspace; a seal assembly coupled to said housing, said seal assembly comprising a packing head and a plurality of seals, said packing head defines a cooling flow path that is in flow communication with said rotor at said rotor wheelspace, said cooling flow path is configured to discharge a cooling steam flow towards said rotor wheelspace; and an anti-swirl device coupled to said seal assembly between said rotor wheelspace and said packing head.