Lean oil multipoint direct injection head for low-pollution combustion chamber of gas turbine

A gas turbine and combustion chamber technology, which is applied in the directions of combustion chamber, continuous combustion chamber, combustion method, etc., can solve the problems of low-polluting combustion of gas turbines.

Active Publication Date: 2017-09-08
NORTHWESTERN POLYTECHNICAL UNIV
View PDF11 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gaseous fuel can be directly and quickly mixed with air, but liquid fuel must be well atomized and mixed with air to form a combustible mixture, so this burner is not suitable for liquid fuel, and cannot solve the problem of low-pollution combustion using liquid fuel gas turbines

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
  • Lean oil multipoint direct injection head for low-pollution combustion chamber of gas turbine
  • Lean oil multipoint direct injection head for low-pollution combustion chamber of gas turbine
  • Lean oil multipoint direct injection head for low-pollution combustion chamber of gas turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] This embodiment is a lean oil multi-point direct injection head used in a gas turbine low-pollution combustor.

[0028] refer to Figure 1 ~ Figure 4 , the present embodiment is used for the fuel-lean multi-point direct injection head of the low-pollution combustion chamber of the gas turbine, which is composed of a plurality of swirl nozzle dies with the same structure. Three swirl nozzle dies 3b, 3c, and 3d are uniformly distributed circumferentially according to the central swirl nozzle die; The swirl nozzle die 4a, the swirl nozzle die 4c, and the swirl nozzle die 4h are composed of the flow nozzle dies, and the main combustion stage swirl nozzle die 4 and the auxiliary combustion stage swirl nozzle die 3 can be independently controlled to ensure that the combustion chamber operates in a wide range. It can work stably under working condition. The main combustion level swirl nozzle mold 4 and the auxiliary combustion level swirl nozzle mold 3 are fixedly installed ...

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 discloses a lean oil multipoint direct injection head for a low-pollution combustion chamber of a gas turbine. The lean oil multipoint direct injection head is composed of multiple swirl nozzle molds of the same structure. A secondary combustion stage is composed of a swirl nozzle mold located in the center and three swirl nozzle molds circumferentially and evenly distributed along the center swirl nozzle mold at equal distance. A primary combustion stage is composed of swirl nozzle molds alternate with the three swirl nozzle molds of the secondary combustion stage. The primary combustion stage and the secondary combustion stage can be independently controlled, and it is guaranteed that the combustion chamber can stably work in a wide working state. A lean oil direct injection combustion technology is adopted, a nozzle outlet is flushed with a swirl flow air outlet, the nozzle molds work in a non-premixed combustion manner, the phenomena of spontaneous combustion and tempering can be avoided, and the risk of oscillating combustion is reduced. The working equivalence ratio of the nozzle molds ranges from 0.6 to 0.8, it is guaranteed that the temperature of a combustion area is low and combustion is stable, and generated thermal nitric oxide is effectively reduced. Pollutant emissions are few, and the lean oil multipoint direct injection head is simple in structure and suitable for the low-pollution combustion chamber of the gas turbine.

Description

technical field [0001] The invention relates to the technical field of combustion chambers of gas turbines, in particular to a lean oil multi-point direct injection head used in low-pollution combustion chambers of gas turbines. Background technique [0002] The source of gas turbine pollutant emissions comes from the combustion chamber, so the development of low-pollution combustion technology is the key to reducing gas turbine pollutant emissions. The main pollutants in the combustion chamber include nitrogen oxides, carbon monoxide and unburned hydrocarbons, the most important of which is to reduce the generation of nitrogen oxides. In the combustion chamber, the thermal nitrogen oxide formation mechanism plays a leading role, so reducing the combustion temperature in the combustion zone is one of the effective means to reduce the formation of nitrogen oxides. Lean fuel combustion technology can effectively reduce the combustion temperature in the combustion zone, thereb...

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): F23R3/34F23R3/38F23R3/14
CPCF23R3/14F23R3/346F23R3/38
Inventor 于涵索建秦梁红侠孙付军李乐黎明
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products