Multipoint direct injection head structure 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 6 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
  • Multipoint direct injection head structure for low-pollution combustion chamber of gas turbine
  • Multipoint direct injection head structure for low-pollution combustion chamber of gas turbine
  • Multipoint direct injection head structure for low-pollution combustion chamber of gas turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] This embodiment is a multi-point direct injection head structure used in a low-pollution combustion chamber of a gas turbine.

[0027] Such as Figure 1 ~ Figure 4 , this embodiment is used for the multi-point direct injection head structure of the low-pollution combustion chamber of the gas turbine, which consists of the combustion chamber head 1, the combustion chamber head flange 2, the four secondary combustion stage swirl nozzle molds 3, and the eight main combustion stages Swirl nozzle mold 4, air inlet 5, swirl channel 6, annular swirl air straight channel 7, annular swirl air convergence channel 8, swirl air outlet 9, fuel inlet 10, nozzle 11, nozzle outlet 12; Wherein, secondary combustion stage swirl nozzle mold 3 comprises swirl nozzle mold 3a, swirl nozzle mold 3b, swirl nozzle mold 3c, swirl nozzle mold 3d; main combustion stage swirl nozzle mold 4 comprises swirl nozzle mold 4a, Swirl nozzle die 4b, swirl nozzle die 4c, swirl nozzle die 4d, swirl nozzle d...

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 multipoint direct injection head structure for a low-pollution combustion chamber of a gas turbine. Multiple secondary combustion stage swirl nozzle molds and primary combustion stage swirl nozzle molds of the same structure are adopted for being evenly distributed and fixedly connected in the circumferential direction of the center of a combustion chamber head flange, and the primary combustion stage swirl nozzle molds are located on the periphery of the secondary combustion stage swirl nozzle molds in the circumferential direction. An air flow path of the swirl nozzle molds is formed by an air inlet, a swirl flow channel, an annular swirl flow air straight channel, an annular swirl flow air convergence channel and a swirl flow air outlet, and speed distribution with the inner side lower than the outer side in the radial direction is formed at the swirl flow air outlet. A fuel oil flow path is formed by a fuel oil inlet, a nozzle and a nozzle outlet. The nozzle outlet is flushed with the swirl flow air outlet, the nozzle molds work in a non-premixed combustion manner, the phenomena of spontaneous combustion and tempering are avoided, and the risk of oscillating combustion is reduced. The temperature of a combustion area is low, combustion is stable, and generated thermal nitric oxide is effectively reduced. Pollutant emissions are few, and the multipoint direct injection head structure is 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 multi-point direct injection head structure for 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, thereby r...

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): F23R3/38F23R3/14
CPCF23R3/14F23R3/38
Inventor 索建秦于涵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