Online measuring device and method for hearth flame spectral attenuation coefficient distribution

A technology of attenuation coefficient and measuring device, which is applied in the field of online measuring device for the distribution of spectral attenuation coefficient of furnace flame, can solve the problems of the influence of boiler combustion stability, complex structure, unknown working environment, etc., and achieves suppression of measurement influence and high accuracy of measurement model. , the effect of low cost

Inactive Publication Date: 2020-05-26
国家能源集团谏壁发电厂
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Problems solved by technology

However, due to the complex internal structure of the boiler furnace and the unknown working environment, many factors will affect the combustion stability of the boiler

Method used

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  • Online measuring device and method for hearth flame spectral attenuation coefficient distribution
  • Online measuring device and method for hearth flame spectral attenuation coefficient distribution
  • Online measuring device and method for hearth flame spectral attenuation coefficient distribution

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] The transmitting and receiving positions of the present invention and the grid division of the furnace are as follows: figure 1 shown. according to figure 1 Open 8 fire observation holes at equiangular intervals on the furnace wall, connect the blue single-mode fiber-coupled pulse laser with a center wavelength of 450nm to the upper-level beam splitter, divide the laser into 8 branches, and pass through the single-mode The optical fiber is connected to the vicinity of each fire observation hole, and the single-mode optical fiber near each fire observation hole is connected to a secondary beam splitter, and each branch is divided into 7 bundles, and fixed on the up...

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Abstract

The invention relates to an online measuring device and method for hearth flame spectral attenuation coefficient distribution. The device comprises a synchronous controller, a pulse laser, 56 photoelectric couplers, a data acquisition card, 9 beam splitters, 8 positioners, 8 cooling protection devices and an industrial personal computer. Light emitted by a pulse laser is split into 56 beams twiceby a beam splitter, the 56 beams penetrate through flame and then are collected by a photoelectric coupler, the 56 beams are transmitted to an industrial personal computer through a collection card, and spectral attenuation coefficient distribution of the hearth flame is obtained through a lower computer inversion program. The invention has the following advantages that spectral attenuation coefficient distribution of the hearth flame at multiple positions can be obtained online, the measured spectral attenuation coefficients are transient and are not influenced by dynamic changes of the combustion state, and meanwhile, the method can be matched with image method temperature measurement equipment to improve the online measurement precision of the temperature field.

Description

technical field [0001] The invention relates to the field of gas-solid two-phase flow measurement, in particular to an online measurement device and method for the distribution of the spectral attenuation coefficient of a furnace flame. Background technique [0002] China is the largest coal consumer in the world. Although traditional energy sources are subject to some restrictions with the adjustment of my country's economic structure and the gradual development of new energy technologies, due to factors such as energy structure and historical power generation layout, for a long time in the future, The layout of the domestic power supply structure will continue to be dominated by thermal power generation, and the research on the safety, economy and environmental protection of boiler combustion is an important topic at present. [0003] The boiler is an important part of the thermal power generation unit, and its operating conditions are closely related to the safe production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/42G01J3/44G01J1/42
CPCG01J3/42G01J3/4412G01J1/4228
Inventor 刘桂生赵重阳王煜伟黄俊韩哲哲许传龙
Owner 国家能源集团谏壁发电厂
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