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Spray nozzle with multiple scales of permanent flames and combustor

A multi-scale and nozzle technology, applied in the direction of burners, gas fuel burners, combustion methods, etc., can solve problems such as combustion instability, and achieve the effects of preventing flames from being blown out, good combustion stability, and low pollutant emissions

Active Publication Date: 2017-08-08
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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  • Spray nozzle with multiple scales of permanent flames and combustor
  • Spray nozzle with multiple scales of permanent flames and combustor
  • Spray nozzle with multiple scales of permanent flames and combustor

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Embodiment Construction

[0020] 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.

[0021] Fractal is a general term for self-similar graphics and structures, and is a universal law contained in nature. The method of the invention designs the sub-nozzle structure and the fuel pipe structure according to the fractal theory, the sub-nozzle structure includes multi-stage sub-nozzles, and the fuel pipe structure is multi-stage bifurcated.

[0022] An embodiment of the present invention provides a multi-scale duty flame nozzle, which includes an axisymmetric cylindrical outer wall, N-level sub-nozzle structures and N-level fuel pipe structures arranged in the outer wall, and the N-level sub-nozzle structures include The Nth, N-1, ..., 1st-stage sub-nozzles, the N-stage fuel pipe structure includes the Nth, N-...

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Abstract

The invention provides a spray nozzle with multiple scales of permanent flames and a combustor. The spray nozzle comprises an axial symmetry cylindrical outer wall, N levels of auxiliary spray nozzle structures and N levels of fuel pipe structures, wherein the N levels of auxiliary spray nozzle structures and the N levels of fuel pipe structures are arranged inside the outer wall. The N levels of auxiliary spray nozzle structures comprise from the Nth-level auxiliary spray nozzle, the (N-1)th-level auxiliary spray nozzle to the first-level auxiliary spray nozzle. The N levels of fuel pipe structures comprise from the Nth-level fuel pipe, the (N-1)th-level fuel pipe to the first-level fuel pipe. The ith-level fuel pipe corresponds to an inlet of the ith-level auxiliary spray nozzle in a one-to-one manner. The ith-level auxiliary spray nozzle is of a cylindrical structure, and i is a positive integer not larger than N.

Description

technical field [0001] The invention relates to the technical field of combustion devices, in particular to a multi-scale on-duty flame nozzle and burner, which is especially suitable for various industrial and civil 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. Burner manufacture...

Claims

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Application Information

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IPC IPC(8): F23D14/48F23D14/58F23G7/06
CPCF23D14/48F23D14/58F23G7/06F23G2209/14
Inventor 李钢朱俊强徐纲卢新根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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