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Power boiler burning optimization method and device based on infra red radiation energy signal

A technology for combustion optimization and power plant boilers, applied in the direction of combustion control, control system, steam generation, etc., to overcome pressure and flow fluctuations, improve load response speed, and ensure stability

Active Publication Date: 2009-07-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. Radiant energy changes significantly with temperature;

Method used

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  • Power boiler burning optimization method and device based on infra red radiation energy signal
  • Power boiler burning optimization method and device based on infra red radiation energy signal
  • Power boiler burning optimization method and device based on infra red radiation energy signal

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Embodiment Construction

[0020] Such as figure 1 , figure 2 As shown, the near-infrared radiant energy sensor 1 is installed at the four corners of the boiler at a height of 35.432m. The furnace radiant energy is obtained by the near-infrared radiant energy sensor 1, transmitted to the photoelectric conversion element PDA55 3 through the optical fiber 2, and converted through the photoelectric conversion element. The BNC connector outputs a 0-10V voltage signal, which is then transmitted to the control center through a network cable. The NICRIO-9002 in the lower computer data acquisition and transmission control module 4 is an on-site data acquisition lower computer, used for data acquisition and transmission control, and communicates with the upper computer data analysis and control signal output module 5 through the TCP / IP protocol. The real-time furnace radiant energy signal input by the lower computer is connected to the switch through the network cable. NI PXI-1042 uses the TCP / IP network to re...

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PUM

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Abstract

The invention discloses a combustion optimization method and device for a utility boiler based on an infrared radiation energy signal. It is divided into two parts: hardware and software. The hardware includes three parts: the first part includes near-infrared radiant energy sensors installed at the four corners of the boiler. The near-infrared radiant energy is transmitted to the photoelectric conversion element through optical fiber. The transmission control modules are connected; the second part includes the lower computer data acquisition and transmission control module located in the boiler body; the third part includes the upper computer data analysis and control signal output module located in the electronic room; the software system is developed using Labview programming software. Use the near-infrared radiant energy sensor to obtain the radiant energy intensity information in the furnace, and obtain the radiant energy deviation value through the artificial neural network optimization method, and then connect the filtered deviation value to the DCS boiler fuel control module to improve the coal feeding control logic. Improve the load response speed of the unit to ensure the stability of the turbine operation.

Description

technical field [0001] The invention relates to a combustion optimization technology of a power station boiler, in particular to a combustion optimization method and device for a power station boiler based on near-infrared radiation energy signals. Background technique [0002] The fuel control system of the four-corner tangential pulverized coal combustion boiler is the most complicated part of the boiler body control. For domestic mainstream 300MW and 600MW power plant boilers, the combustion control usually consists of three parts: fuel adjustment, air supply adjustment and induced air adjustment. Generally, With the change of the boiler load, adopt boiler following, steam turbine following or coordinated control and other operating modes. Regardless of the mode of operation, it is usually necessary to use the "heat signal" as a feedback signal for the adjustment of the amount of fuel entering the furnace. The heat signal comes from the change of the steam drum pressure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23N5/20F22B35/18
Inventor 严建华黄群星王飞马增益刘冬池涌岑可法
Owner ZHEJIANG UNIV
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