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Double-fuel nozzle with fractal structured fuel pipe, nozzle array and combustor

A fractal structure, dual-fuel technology, applied to gas fuel burners, burners, combustion methods, etc., can solve problems such as combustion instability, and achieve good combustion stability, good combustion stability, and small flow blockage

Inactive Publication Date: 2017-06-30
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Burner manufacturers have developed a variety of clean combustion technologies, such as lean premixed combustion technology, dilute-phase premixed pre-evaporation technology, lean oil direct injection technology, etc. Although these technologies can effectively reduce pollutant emissions, they all face the problem of poor combustion. stability problem

Method used

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  • Double-fuel nozzle with fractal structured fuel pipe, nozzle array and combustor
  • Double-fuel nozzle with fractal structured fuel pipe, nozzle array and combustor
  • Double-fuel nozzle with fractal structured fuel pipe, nozzle array and combustor

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0039] Please refer to figure 1 , figure 2 , the first embodiment of the present invention provides a dual-fuel nozzle with a fractal structure fuel pipe, including: a nozzle outer wall 4 and a fractal structure fuel pipe.

[0040] The fuel pipe with fractal structure is a three-stage fractal structure, including a main pipe 3 , a primary fractal branch pipe 5 branched from the main pipe 3 , and a secondary fractal branch pipe 6 branched from the primary fractal branch pipe 5 .

[0041] Wherein, the main pipe 3 is coaxially arranged in the outer wall 4 of the nozzle, the inlet 1 of the main pipe is used as the inlet of the fuel pipe with a fractal structure, and the air inlet 2 is formed between the inlet 1 of the main ...

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Abstract

The invention provides a dual fuel nozzle with a fractal structure fuel pipe, comprising the outer wall of the nozzle and a fractal structure fuel pipe, the fractal structure fuel pipe is a multi-stage fractal structure, including a main pipe and a multi-stage fractal branch pipe, and each stage of the fractal branch pipe includes multiple Branches, each branch of the upper level fractal branch branches out the next level of fractal branch. The nozzle adopting the fractal structure fuel pipe has small flow loss, small flow blockage, good mixing effect, good combustion stability and low pollutant emission.

Description

technical field [0001] The invention relates to the technical field of combustion devices, in particular to a dual-fuel nozzle with a fractal fuel pipe, a nozzle array and a burner, which is especially suitable for various industrial burners such as gas turbines, boilers, and chemical furnaces. Background technique [0002] Industrial production such as smelting, petrochemicals, pharmaceuticals, papermaking and mining will produce a large amount of harmful gases and low calorific value gases. These gases will seriously pollute the environment and waste energy if they are directly discharged into the atmosphere. If these gases are burned and utilized, it not only reduces environmental pollution and saves energy. At present, the problem of environmental pollution in our country is very serious, and it is very urgent to develop related clean combustion technologies. In addition, aeroengines, gas turbines for power generation, and gas turbines for ships also require burners. B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/58F23D14/60F23D14/84
CPCF23D14/02F23D14/58F23D14/60F23D14/84
Inventor 李钢徐纲卢新根朱俊强尹娟杜薇穆勇刘存喜刘富强杨金虎殷晓霞
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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