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

Coaxial staged combustor for low-pollution combustion chamber of gas fuel gas turbine

A technology of gas turbines and gas fuels, applied in the direction of combustion chambers, continuous combustion chambers, combustion methods, etc., can solve problems such as combustion instability, and achieve the effects of preventing ablation burners, low pollutant emissions, and uniform fuel flow

Active Publication Date: 2021-08-27
HARBIN ENG UNIV
View PDF28 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because lean premixed combustion is prone to combustion instability, people have proposed coaxial staged combustion tec

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
  • Coaxial staged combustor for low-pollution combustion chamber of gas fuel gas turbine
  • Coaxial staged combustor for low-pollution combustion chamber of gas fuel gas turbine
  • Coaxial staged combustor for low-pollution combustion chamber of gas fuel gas turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to Figure 1 to Figure 4 , this embodiment is used for the coaxial staged burner of the low-pollution combustion chamber of the gas turbine. The hub fuel ring cavity is set in the outer hub of the swirler, the blade fuel cavity is set in the second and third stage swirl blades, the center blunt body fuel cavity is set in the center blunt body of the swirler; the hub fuel ring cavity is set outside the first stage Four fuel branch circuits, rectified fuel ring chambers are set in front of the outer hubs of the second and third stages to ensure uniform fuel flow in the interblade flow channels of the same stage.

[0031] The swirl vane is located in the tapered swirl channel, the tapered mixing section is located behind the swirl vane in the tapered swirl channel, the first-stage fuel branch is located in front of the first-stage outer hub, and the rectified fuel ring cavity is located in the second In front of the outer hubs of the first and third stages, the hub ...

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

The invention belongs to the technical field of combustion chambers of gas turbines, and particularly relates to a coaxial staged combustor for a low-pollution combustion chamber of a gas fuel gas turbine. According to the coaxial staged combustor, air flow is accelerated by adopting a tapered rotational flow channel. A tapered mixing section is arranged behind each stage of rotational flow blades, so that the mixing between fuel and air is enhanced. First-stage fuel enters a hub fuel ring cavity from a fuel pipe through a fuel branch, second-stage fuel and third-stage fuel enter a rectification fuel ring cavity before entering the hub fuel ring cavity and enter the hub fuel ring cavity from four fan-shaped hub fuel ring cavity inlets of the hub fuel ring cavity after being rectified, it is guaranteed that the fuel flow in flow channels between blades of the same stage is uniform, and the premixing effect is enhanced. First-stage premixing-stage fuel is sprayed out from fuel spraying holes in a hub and enters a backflow area along with first-stage premixing-stage air along a first-stage outer hub, the fuel is prevented from being gathered at an outlet of a swirler, and the phenomena of tempering and combustor ablation are effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of combustion chambers of gas turbines, and in particular relates to a coaxial staged burner used in low-pollution combustion chambers of gas fuel gas turbines. Background technique [0002] Gas turbine pollutant emissions originate from combustion chemical reactions within the combustor. The main pollutants in the combustion chamber include carbon monoxide, nitrogen oxides, unburned hydrocarbons, soot, etc., among which nitrogen oxides are the most difficult pollutants to control. Since the thermodynamic mechanism plays a leading role in the formation of nitrogen oxides in the combustion chamber, controlling the combustion temperature is an effective means to reduce the emission of nitrogen oxides. Lean premixed combustion technology can make the combustion reaction in the combustion chamber proceed at a lower equivalence ratio, effectively control the combustion temperature, and reduce nitrogen oxide emis...

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
IPC IPC(8): F23R3/28F23R3/38
CPCF23R3/286F23R3/38
Inventor 赵宁波孙继昊罗绍文杨洪磊李智明郑洪涛
Owner HARBIN ENG UNIV
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