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Nozzle, nozzle array and burner with adjustable swirl number and turbulence

A technology of swirl number and turbulence degree, used in nozzles, various industrial burners, nozzle arrays and burner fields, can solve problems such as combustion instability, achieve good combustion stability, good safety, and good mixing effect. Effect

Active Publication Date: 2019-08-16
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • 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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  • Nozzle, nozzle array and burner with adjustable swirl number and turbulence
  • Nozzle, nozzle array and burner with adjustable swirl number and turbulence
  • Nozzle, nozzle array and burner with adjustable swirl number and turbulence

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Embodiment Construction

[0032] 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.

[0033] Please refer to Figure 1 to Figure 3 , the first embodiment of the present invention provides a nozzle with adjustable swirl number and turbulence degree, comprising: a coaxially arranged middle cylinder 8 and an outer layer cylinder 9, the inside of the middle cylinder 8 is a middle flow channel 7, An outer ring flow channel 6 is formed between the middle cylinder 8 and the outer cylinder 9 . The outer cylinder protrudes downstream from the middle cylinder, and a mixing zone 10 is formed between the outlet 11 of the outer cylinder and the outlet of the middle cylinder.

[0034] The nozzle also includes a swirler, which is arranged in the outer ring flow channel 6 between the middle cylinder 8 and the outer cylin...

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Abstract

The invention provides a nozzle with the adjustable swirling number and the turbulence level, a nozzle array and a combustor. The relative position between an inner-circle blade and an outer-circle blade of a cyclone is adjusted by rotating a middle cylinder or an outer-layer cylinder, and the purpose of adjusting the swirling number and the turbulence strength can be adjusted. The work range of the nozzle is wide, the swirling number and the turbulence of a flow field can be flexibly adjusted, the mixing effect is good, safety is good, pollutant emission is low, the fuel application range is wide, and good combustion stability is achieved.

Description

technical field [0001] The invention relates to the technical field of combustion devices, in particular to a nozzle with adjustable swirl number and turbulence, a nozzle array and a burner, which are 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 b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/02F23D14/62F23D14/48F23D14/58
CPCF23D14/02F23D14/48F23D14/58F23D14/62
Inventor 李钢徐纲杜薇卢新根朱俊强尹娟穆勇杨金虎殷晓霞
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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