Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of using external fluid for cooling high temperature components of gas turbine

A gas turbine and turbine technology, applied in the field of turbines, can solve problems such as reduced efficiency, reduced power potential, and reduced flame temperature

Inactive Publication Date: 2014-01-01
GENERAL ELECTRIC CO
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to (a) the reduction in flame temperature due to the non-chargeable flow which reduces the combustor outlet temperature, (b) the reduction in work due to the bypass of compressed air at the upstream stage of the turbine, and (c) The reduction in efficiency occurs due to the reduction in work potential (loss of availability) caused by the dilution effect of the mixed coolant pulses in the main gas path and the associated loss of aerodynamic efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of using external fluid for cooling high temperature components of gas turbine
  • Method of using external fluid for cooling high temperature components of gas turbine
  • Method of using external fluid for cooling high temperature components of gas turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention provides cooling of stationary and / or rotating hot gas path components of the gas turbine using fluid external to the gas turbine in a closed loop cooling configuration. The external fluid can be nitrogen, carbon dioxide, steam or air. Preferably, the external fluid is nitrogen, which is obtained from an air separation unit (ASU) column and then introduced into the closed loop to cool the hot gas path components of the gas turbine.

[0040] After cooling the turbine components, the heat removed with the external fluid flow is dumped into the compressor discharge casing (CDC), or into one of the stages of the multi-stage turbine. Preferably, the heated external fluid is poured into the combustor / CDC where heat can be used at the optimum point of the turbo Brayton cycle. Alternatively, heated external fluid may be poured into an appropriate downstream turbine stage when the pressure of the heated fluid is insufficient for the fluid to make it to the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An external fluid (27) in a closed loop is used to cool hot gas path components of gas turbine (16). After cooling the turbine components, the heated external fluid (27) is dumped either in the compressor discharge casing (28) or in the one of the turbine's stages (16A-C). Where the external fluid (27) is nitrogen to be dumped in the turbine compressor's discharge casing (28), the nitrogen is compressed using diluent nitrogen compressors (17). Alternatively, where the external fluid (27) is nitrogen to be dumped in one of the stages (16A-C) of the turbine (16), the nitrogen is not compressed at all. The turbine blade heat exchangers (22) in the turbine stages (16A-C) through which the nitrogen passes can be connected in parallel or in series for cooling the hot gas path components in the turbine stages (16A-C). The nitrogen can optionally be mixed with air or steam or not mixed at all.

Description

technical field [0001] The present invention relates to turbines, and more particularly, to an arrangement for cooling high temperature components of a gas turbine using a fluid external to the gas turbine for a process power plant. Background technique [0002] Open-loop air cooling of the stationary and rotating components of the gas turbine of an integrated gasification combined cycle (IGCC) power plant utilizing air extracted from the compressor reduces the efficiency of the turbine's Brayton cycle (i.e., the thermodynamic cycle that describes the operation of the gas turbine) efficiency. Due to (a) the reduction in flame temperature due to the non-chargeable flow which reduces the combustor outlet temperature, (b) the reduction in work due to the bypass of compressed air at the upstream stage of the turbine, and (c) Efficiency reduction occurs due to the reduction in work potential (loss of availability) caused by the dilution effect of the mixed coolant pulsations in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/12F01D5/18
CPCF02C7/18Y02E20/16Y02E20/18
Inventor K·蒙德拉A·K·阿南德V·穆泰亚
Owner GENERAL ELECTRIC CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com