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burner

A burner and exciter technology, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve the problem of low plasma-induced flow velocity, and achieve the effects of uniform distribution of excitation effects, enhanced stability, and enhanced effects.

Active Publication Date: 2019-09-24
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in the plasma flow control technology, due to the low plasma induced flow velocity, how to enhance the flow control strength of the plasma is the main challenge faced by the plasma flow control technology

Method used

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Embodiment 1

[0063] This embodiment proposes a burner with radially arranged plasma actuators, see Figure 1 to Figure 4 , A channel for the radial flow of combustion reactants is formed between the upper end plate 3 and the lower end plate 4 of the burner. Such as figure 1 As shown, the plasma exciter is arranged on the upper and lower end plates along the radial direction.

[0064] Such as figure 2 As shown, the ground electrode 9 of the plasma actuator on the upper end plate and the ground electrode 8 of the plasma actuator on the lower end plate are connected to the ground terminal of the high voltage power supply 5; the high voltage electrode 10 of the plasma actuator on the upper end plate and the plasma actuator on the lower end plate The high-voltage electrode 11 is connected to the high-voltage end of the high-voltage power supply 5 . The axial distance between the upper end plate and the lower end plate of the burner is 5mm.

[0065] The ground electrode and the high-voltage...

Embodiment 2

[0069] This embodiment proposes a burner with radially arranged plasma actuators. For the purpose of brief description, any description of technical features in this embodiment that can be used in the same way as in Embodiment 1 above will not be repeated. See Figure 5 , the total number of plasma exciters in this embodiment is 24, which are divided into 8 groups including 3 plasma exciters in each group, 4 of which are arranged on the upper end plate, and the other 4 groups are arranged on the lower end plate, each The three in the group are arranged along the radial direction of the burner, and are spaced at a certain distance in the radial direction, and the adjacent two of the three plasma actuators are staggered by 30° along the circumferential direction. The advantages of this are as follows: the exciters are staggered at a certain angle, which can make the effect of plasma excitation uniformly distributed along the circumferential direction, which helps to enhance the ...

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Abstract

The invention discloses a burner. The burner comprises an upper end plate, a lower end plate, at least one high-voltage power supply and n plasma exciters, wherein a convex outlet is formed in the center position of the upper end plate for enabling a fluid flowing between the upper end plate and the lower end plate to flow out; the n plasma exciters are distributed on the upper surfaces of the upper end plate and / or the lower end plate; each plasma exciter extends in the radial direction; the n plasma exciters are connected to the at least one high-voltage power supply for generating plasmas; and n is greater than and equal to 1. The plasmas can induce the fluid between the upper and lower end plates to deflect in the radial flowing direction; through deflection of radial flowing, the fluid generates a rotating motion at a straight section of an outlet of the burner; and the rotating motion enables the fluid to present an expansion state when leaving from the outlet of the burner, so that stabilization of burning and reduction of the axial size of flame are facilitated.

Description

technical field [0001] The invention belongs to the technical field of combustion devices, and more particularly relates to a burner with radially arranged plasma actuators. 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 efficient 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 for gas turbines. Gas turbine 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, and catalytic com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/18H05H1/24
Inventor 李钢朱俊强杜薇徐纲卢新根张燕峰尹娟穆勇刘存喜
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI