High-temperature and high-speed stable combustion method and device based on multistage jet flow and rotational flow

A technology of stable combustion and jet flow, applied in the field of combustion, can solve the problems of unstable combustion and ablation, and achieve the effect of reducing the ablation phenomenon, prolonging the service life and realizing the self-cooling effect.

Active Publication Date: 2021-04-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the defects of the prior art and effectively improve the combustion instability and ablation problems existing in the existing combustion methods and devices, the present invention discloses a high-temperature, high-speed and stable combustion method and device based on multi-stage jets and swirls to solve The technical problem is: based on the multi-stage jet flow and swirl flow, the combustion characteristics of the high-temperature, high-speed and stable combustion device are improved, which has the advantages of high combustion efficiency, stable flame, and anti-ablation.

Method used

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  • High-temperature and high-speed stable combustion method and device based on multistage jet flow and rotational flow
  • High-temperature and high-speed stable combustion method and device based on multistage jet flow and rotational flow

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Embodiment 1

[0031] A high-temperature, high-speed, stable combustion method based on multi-stage jets and swirls disclosed in this embodiment utilizes the flow characteristics and flame stability of axial jet flames and tangential swirl flames, and uses non-premixed high-speed axial jets to provide high-temperature High-speed flame, using pre-mixed swirl to enhance mixing, improve combustion efficiency and maintain stable combustion.

Embodiment 2

[0033] Such as figure 1 As shown, this embodiment discloses a high-temperature, high-speed and stable combustion device based on multi-stage jets and swirls, including a first-stage axial jet generator 1, a second-stage axial jet generator 2, and a third-stage axial jet generator 3 and tangential swirl generator 4, combustion chamber 5.

[0034] Among them, the first-stage axial jet generator 1 is a hollow cylindrical structure, including an inlet 6 and an outlet 9, which are distributed along the axial direction and are circular; the second-stage axial jet generator 2 is a flanged sleeve structure , including two inlets 7 and one outlet 10, both of which are circular, the two inlets 7 are symmetrically distributed along the radial direction, and the outlet 10 is along the axial direction; the three-stage axial jet flow generating device 3 is a flanging sleeve type structure, including two Two inlets 8 and one outlet 11 are circular, two inlets 8 are symmetrically distributed...

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Abstract

The invention discloses a high-temperature and high-speed stable combustion method and device based on multistage jet flow and rotational flow, and belongs to the field of combustion. The device comprises a first-stage axial jet flow generating device, a second-stage axial jet flow generating device, a third-stage axial jet flow generating device, a tangential rotational flow generating device anda combustion chamber structure. An outlet of the first-stage axial jet flow generating device is arranged in an outlet of the second-stage axial jet flow generating device, and an outlet of the second-stage axial jet flow generating device is arranged in an outlet of the third-stage axial jet flow generating device. According to the method and the device, combustion characteristics and flow characteristics of axial jet flow flame and tangential rotational flow flame are fully utilized; the mixed gas of fuel and a diluent and an oxidizing agent which are introduced in a graded mode in the axial direction form high-speed non-premixed jet flames, the premixed gas of the fuel and the oxidizing agent which are introduced in the tangential direction form rotational flow premixed flame, high-speed flowing is guaranteed, meanwhile, the stability of the flame is maintained, and the stable high-speed flame is formed. The method and the device have the advantages of being high in combustion efficiency, stable in flame, resistant to ablation and the like.

Description

technical field [0001] The invention belongs to the field of combustion, and relates to a high-temperature, high-speed and stable combustion method and device based on multi-stage jet flow and swirl flow. Background technique [0002] Combustion is the most convenient and rapid way of transferring energy from fuels to other media. At present, most of the equipment, such as gas turbines, liquid rocket engines, etc., still rely on combustion to obtain energy from fossil fuels. However, there are still combustion instability and ablation problems in most combustion chambers, especially in combustion chambers with high air velocity and high flame temperature. Therefore, it is very important to develop stable combustion technology and anti-ablation technology. [0003] At the same time, most of the existing stable combustion technology and anti-ablation technology need to rely on the addition of external components. The structure is complex, the design and manufacturing costs a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/46F23D14/62F23D14/72
CPCF23D14/02F23D14/46F23D14/62F23D14/72
Inventor 石保禄王宽宇马志伟谢定江唐勇王宁飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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