Integrated plasma exciter, nozzle array and burner

A plasma exciter and nozzle technology, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve problems such as easy oscillation and combustion instability, and achieve suppression of flow separation, prevention of flameout and flame pulsation, and improved mixing. effect of effect

Active Publication Date: 2016-07-20
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, since the main flame is stable at the low-velocity edge of the shear layer, periodic vortex shedding will occur near the low-velocity region of the shear layer, and oscillations will easily occur near the stable point, and combustion instability will easily occur when operating in non-design conditions

Method used

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  • Integrated plasma exciter, nozzle array and burner
  • Integrated plasma exciter, nozzle array and burner
  • Integrated plasma exciter, nozzle array and burner

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Embodiment Construction

[0030] 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.

[0031] see figure 1 Referring to FIG. 7 , the nozzle of the integrated plasma actuator according to the first embodiment of the present invention includes: an inner cylinder 12, an outer cylinder 11, and a center electrode structure 40 disposed in the inner cylinder; an inner layer of M layers The wave structure 20 is sandwiched between the inner cylinder 12 and the central electrode structure 40, which are arranged in sequence along the radial direction of the cylinder, and N outer layer wave structures 30 are sandwiched between the inner cylinder 12 and the outer cylinder 11 Between them, they are arranged in sequence along the radial direction of the cylinder; between adjacent inner wave structures, between adjacent ou...

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Abstract

The invention provides a nozzle of an integrated plasma exciter. The nozzle comprises an inner cylinder, an outer cylinder, M inner wave structures, N outer wave structures and a central electrode structure arranged inside the inner cylinder, wherein the M inner wave structures are clamped between the inner cylinder and the central electrode structure; the N outer wave structures are clamped between the inner cylinder and the outer cylinder; the inner cylinder and the central electrode structure extrude out of the inner wave structures in the fluid outlet direction; and the central electrode structure and the inner cylinder from a plasma exciter. According to the nozzle, the voltage value of the central electrode structure is adjusted, so that the working state of the nozzle can be adjusted, the flameout and backfire situations are effectively avoided, and the combustion stability of the nozzle is improved.

Description

technical field [0001] The invention relates to the technical field of combustion devices, in particular to a nozzle and a nozzle array integrating a plasma exciter, which is especially suitable for various industrial burners such as gas turbines, boilers and chemical furnaces. Background technique [0002] Gas turbines are widely used in electric power, aviation, petrochemical and other industries due to their small size and large output power. Due to the energy crisis and environmental deterioration, it is urgent to develop high-efficiency and clean combustion chambers, which are required to have the characteristics of reliable ignition, stable combustion, high efficiency and low emissions. At present, the problem of environmental pollution in our country is very serious, and it is very urgent to develop clean combustion technology of gas turbines. Gas turbine manufacturers have developed a variety of clean combustion technologies, such as lean premixed combustion technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/38
CPCF23R3/38
Inventor 李钢
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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