Swirl burner secondary air online measurement system

A swirl burner and measurement system technology, which is applied in the direction of combustion control, combustion method, combustion adjustment, etc., can solve the problem that the secondary air of the swirl burner is difficult to measure, etc.

Active Publication Date: 2020-01-17
BEIJING YUANSHEN ENERGY SAVING TECH
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  • Claims
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Problems solved by technology

[0008] The invention provides an online measurement system for the secondary air of the swirl burner to solve the problem that the secondary air of the swirl burner of the boiler is difficult to measure

Method used

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  • Swirl burner secondary air online measurement system
  • Swirl burner secondary air online measurement system
  • Swirl burner secondary air online measurement system

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Embodiment Construction

[0094] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

[0095] Such as figure 1 , figure 2 with image 3 As shown, the present invention proposes an online measurement system for the secondary air of the swirl burner, which is used to measure the wind speed in the secondary air duct of the swirl burner. The online measurement system for the secondary air of the swirl burner includes:

[0096] Three sets of primary measuring elements are radially distributed in three circles of the radial section of the secondary air duct, the primary measuring elements are back pipes, and the secondary air duct includes: The first inner wall of the secondary air channel and the second inner wall of the secondary air channel, the radial section of the secondary air channel is an annular section between the first inner wall and the second...

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Abstract

The invention provides a turbulent burner secondary air on-line measuring system. The turbulent burner secondary air on-line measuring system comprises three sets of primary measuring elements which are radially distributed in three circumferences of radial sections of secondary air ducts. The three circumferences use the center points of the secondary air ducts as a center of a circle, and the three circumferences are sequentially the inner circumference, the middle circumference and the outer circumference. The radiuses of the three circumferences are sequentially r1, r2 and r3, and the radiuses are in units of meters. The radius of a first inner wall is rh, and the unit is meter; the radius of a second inner wall is re, and the unit is meter; and r1 is greater than rh, and r3 is less than re. The turbulent burner secondary air on-line measuring system truly and effectively measures the air volume of the secondary air ducts, provides a good foundation for optimizing air distribution,optimizes the air distribution mode to save power consumption of a fan, reduces the power consumption rate of a plant, and improves the economy of a boiler.

Description

technical field [0001] The invention relates to the technical field of coal-fired units, in particular to the measurement of secondary air of a swirl burner of a boiler, that is, an online measurement system for the secondary air of a swirl burner. Background technique [0002] After the coal-fired unit is put into operation, there are generally a series of problems affecting the safe and economical operation of the boiler, such as the large temperature difference between the two sides of the water wall and the NOx concentration of the flue gas at the furnace outlet far exceeding the design value. Through a series of tests, it was found that the secondary air volume distribution characteristics of the burners on the same floor are generally poor, and the inability to accurately adjust the secondary air intake to the burners on the same floor is one of the important factors leading to the above problems. At present, coal-fired units do not have a reliable secondary air meter ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23N3/00F23N5/18
CPCF23N3/005F23N5/18F23N2005/181F23N2223/10F23N2225/06F23N2900/05005
Inventor 陈虎亮熊健李前宇赵长江郭强任德杰赵成李强昂永波丁维栋崔斌石彦鹏张勇飞卢鑫
Owner BEIJING YUANSHEN ENERGY SAVING TECH
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