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Radial two-stage rotational flow spray nozzle of combustion chamber

A swirl nozzle and combustion chamber technology, applied in the field of combustion, can solve the problems of NOx emission and flame stability contradictions, achieve the effects of reducing emissions, meeting the needs of fuel and air mixing, and avoiding interference

Inactive Publication Date: 2017-05-17
林宇震
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] A radial two-stage swirl nozzle for a combustion chamber is provided, and the technical problem of solving the contradiction between NOx emission and flame stability is the prior art

Method used

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  • Radial two-stage rotational flow spray nozzle of combustion chamber
  • Radial two-stage rotational flow spray nozzle of combustion chamber

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Embodiment Construction

[0041] The principle, structure and specific implementation of the present invention will be further described below in conjunction with the accompanying drawings. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "periphery", "inner", "outer" and "downstream" are based on the orientation or positional relationship shown in the drawings, It is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only...

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Abstract

The invention discloses a low-pollution radial two-stage rotational flow spray nozzle of a combustion chamber. The radial two-stage rotational flow spray nozzle comprises a central fuel channel, a peripheral fuel channel and an annular air channel which are coaxially arranged in the radial direction, and the annular air channel is separated into a central air channel body and a peripheral air channel body by a splitter plate; the central air channel body and the peripheral air channel body are internally provided with a central rotational flow device and a peripheral rotational flow device respectively; and an outlet of the central fuel channel is provided with a premixing cavity. By means of the spray nozzle structure, combustion stability and good discharging performance are guaranteed, gas or liquid fuel, such as natural gas which is cleaner, can be utilized, and the radial two-stage rotational flow spray nozzle has the advantage that the work state is easy to adjust.

Description

technical field [0001] The invention relates to the technical field of combustion, in particular to a low-pollution combustion chamber radial two-stage swirl nozzle. Background technique [0002] As the world pays more attention to environmental protection issues, countries have increasingly stringent requirements on nitrogen oxide (NOx) emissions in the field of combustion technology. [0003] In order to achieve the purpose of low NOx emission, premixed combustion technology is widely used. In order to achieve low NOx, premixed combustors often use swirl mixing technology to achieve good mixing of fuel and oxidant, but combustors working in this state are extremely prone to combustion instability. To solve this problem, engineering usually adopts a compromise measure of sacrificing NOx emission performance, that is, using a diffusion flame with good stability but poor NOx emission performance to stabilize the premixed flame. Generally speaking, the larger the proportion ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28F23R3/38F23R3/12
CPCF23R3/12F23R3/286F23R3/38
Inventor 林宇震
Owner 林宇震
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