External cooling fluid injection system in a gas turbine engine

US8820091B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Kok-Mun Tham · Oviedo, US
• Ching-Pang Lee · Cincinnati, US
• Vincent P. Laurello · Guilford, US
• Abdullatif M. Chehab · Oviedo, US
• David A. Kemp · Woodstock, US
• John A. Fussner · Loveland, US
• Yan Yin · Oviedo, US
• Bijay K. Sultanian · Oviedo, US
• Weidong Cai · Oviedo, US

Key dates

• Filing date: Nov 7, 2012
• Grant date: Sep 2, 2014
• Expiry date: Dec 8, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2270/3032
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A cooling fluid air injection system for use in a gas turbine engine includes at an external cooling fluid source, at least one rotor cooling pipe, which is used to inject cooling fluid from the source into a rotor chamber, a piping system that provides fluid communication between the source and the rotor cooling pipe(s), a blower system for conveying the cooling fluid through the piping system and the rotor cooling pipe(s) into the rotor chamber, and a valve system. The valve system is closed during full load engine operation to prevent cooling fluid from the source from passing through the piping system, and open during less than full load engine operation to allow cooling fluid from the source to pass through the piping system.