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Nozzle for premixed combustion, nozzle array and combustor

A technology of premixed combustion and nozzles, applied in combustion chambers, combustion methods, combustion equipment, etc., to achieve the effects of broadening the stable operating range, reducing influence, and balancing flow field velocity

Active Publication Date: 2016-07-13
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

In addition, due to the fast combustion speed of hydrogen and other fuels, flashback is easy to occur. Therefore, most hydrogen burners in the industry adopt the diffusion combustion method. The backfire problem is a technical challenge faced by hydrogen premixed burners.

Method used

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  • Nozzle for premixed combustion, nozzle array and combustor
  • Nozzle for premixed combustion, nozzle array and combustor
  • Nozzle for premixed combustion, nozzle array and combustor

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Embodiment Construction

[0034] 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.

[0035] Such as Figure 1-6 As shown, the nozzle for premixed combustion according to the first embodiment of the present invention includes an inner air intake structure, an outer air intake structure and an M-layer intermediate air intake structure, and the inner air intake structure is close to the fluid outlet side is the fluid outlet port, the inner cylinder 11 is on the side close to the fluid inlet, the outer cylinder 31 is on the side of the outer air intake structure close to the fluid outlet, and the middle air intake structure of the M layer is sandwiched between the inner cylinder 11 and Between the outer cylinders 31, they are arranged in sequence along the radial direction around the cylinders, between two ad...

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Abstract

The invention provides a nozzle for premixed combustion.A dilution zone is formed among the fluid outlet end of an inner-layer gas inflow structure, an outer-layer cylinder of an outer-layer gas inflow structure and the top ends of M layers of middle gas inflow structures, the influence of tempering on the nozzle and a combustor is lowered, and the tempering margin is increased.Oblique flow channels are formed between two adjacent wave rotational structures, between the corresponding wave rotational structure and an inner-layer cylinder and between the corresponding wave rotational structure and the outer-layer cylinder, combustion efficiency is improved, emissions of pollutants are reduced, flameout and flame pulsation are avoided, and the stability of combustion is improved.A drainage channel, an inner-side passageway and an outer-side passageway are formed by a supporting cylinder, the inner-layer cylinder and the outer-layer cylinder, and the stability, completeness and efficiency of combustion are further improved.

Description

technical field [0001] The invention relates to the technical field of combustion devices, in particular to a nozzle and a nozzle array for premixed combustion, which are 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 technology,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/18F23R3/02
CPCF23R3/02F23R3/18
Inventor 李钢
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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