SEALING DEVICE FOR REDUCING FLUID LEAKAGE IN TURBINE APPARATUS

摘要

A sealing device (122) for reducing fluid leakage between a rotor (104) and a stator (108) of a turbine apparatus (102) is disclosed. The sealing device (122) comprises a series of fluid inlet ports (132) such that a swirl component of fluid flow in a seal inlet region (134) impinges directly into inlet openings of the inlet ports (132), and a series of fluid jets (138) fluid into a leakage region so as to reduce the rate of leakage of fluid through the leakage region. A conduit (136) connects the inlet ports (132) to the jets (138). Kinetic energy resulting from a swirl component of motion of the fluid causes fluid in the conduit (136) to be at a higher pressure than in the seal inlet region (134). A sealing device (122) for reducing fluid leakage between a rotor (104) and a stator (108) of a turbine apparatus (102) is disclosed. The sealing device (122) comprises a series of fluid inlet ports (132) such that a swirl component of fluid flow in a seal inlet region (134) impinges directly into inlet openings of the inlet ports (132), and a series of fluid jets (138) fluid into a leakage region so as to reduce the rate of leakage of fluid through the leakage region. A conduit (136) connects the inlet ports (132) to the jets (138). Kinetic energy resulting from a swirl component of motion of the fluid causes fluid in the conduit (136) to be at a higher pressure than in the seal inlet region (134).