Turbine wheel cover-plate mounted gas turbine interstage seal

• Main Authors: FERNANDO JORGE CASANOVA, EDIP SEVINCER, JONATHAN MICHAEL WEBSTER, OMPRAKASH SAMUDRALA
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2016
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

The invention relates to a turbine wheel cover-plate mounted gas turbine interstage seal. In particular, a sealing system for a multi-stage turbine includes multiple first interstage seal subsystems disposed circumferentially about a rotor wheel shaft of the multi-stage turbine and extending axially between a first turbine stage and a second turbine stage of the multi-stage turbine. Each of the first interstage seal subsystems includes multiple near flow path seal segments. The first interstage seal subsystem also includes a forward coverplate disposed axially between a first turbine wheel of the first turbine stage and the near flow path seal segment and an aft coverplate disposed axially between the near flow path seal segment and a second turbine wheel of the second turbine stag. Further, each of the forward coverplate and the aft coverplate extends radially to a first stage bucket and a second stage bucket respectively. 本发明涉及涡轮轮盖板安装的燃气涡轮级间密封件。具体而言，用于多级涡轮的密封系统包括多个第级间密封子系统，该多个第级间密封子系统围绕该多级涡轮的转子轮轴周向地配置，且在该多级