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Monitoring device and monitoring method for water content of coal powder and coal type on basis of multiple sensors

A multi-sensor and monitoring device technology, applied in the direction of measuring devices, electric devices, and thermometers using electric/magnetic elements that are directly sensitive to heat, can solve the problem of inability to guide power plants, real-time adjustment of pulverizing systems and boiler combustion parameters, etc. question

Pending Publication Date: 2017-05-31
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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  • Application Information

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Problems solved by technology

This offline sampling method is obviously unable to guide the power plant to adjust the pulverizing system and boiler combustion parameters in real time according to the changes in coal moisture content and coal quality.

Method used

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  • Monitoring device and monitoring method for water content of coal powder and coal type on basis of multiple sensors
  • Monitoring device and monitoring method for water content of coal powder and coal type on basis of multiple sensors
  • Monitoring device and monitoring method for water content of coal powder and coal type on basis of multiple sensors

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Embodiment Construction

[0033] The invention provides a method and device for monitoring the moisture content of pulverized coal and coal type based on multi-sensors, which can realize the real-time detection of the moisture content of pulverized coal and coal type in a circular pipeline, and the strip electrode is not affected by the shape of the pipeline and is easy to install .

[0034] Below in conjunction with accompanying drawing and implementation example the present invention will be further described:

[0035] The composition block diagram of a multi-sensor based monitoring device for coal moisture content and coal type is as follows: figure 1 As shown, it is composed of a measurement sensor probe 2, a signal processing unit, a data fusion unit and an output display unit connected in sequence; the measurement sensor probe 2 is composed of a temperature sensor 3, a speed measurement electrode 4 and an electrostatic signal measurement electrode 5, and is made of an insulating material 6 and t...

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Abstract

The invention belongs to the field of process parameter detection of a coal-fired power plant and particularly relates to a monitoring device and a monitoring method for water content of coal powder and the coal type on the basis of multiple sensors. The monitoring device consists of a measuring sensor probe, a signal processing unit, a data fusion unit and an output display unit, wherein the measuring sensor probe consists of metal electrodes and a temperature sensors arranged on a primary air pipeline of the coal-fired power plant, and is used for measuring the speed, electrostatic signals and temperature of primary air powder. Dynamic parameters and signal characteristics of the primary air powder outputted by the signal processing unit and production parameters of the power plant are comprehensively analyzed in the data fusion unit, then the water content of the coal powder and the changing condition of the coal type in the pipeline are obtained, are displayed and stored in the output display unit, and are uploaded to a power-plant control system. According to the monitoring device and the monitoring method, the structure is simple, the cost is low, the measurement is sensitive, the property is stable, the influence of severe environments is not easily caused, and real-time monitoring for the water content of the coal powder and the change of the coal type in the primary air pipeline of the coal-fired power plant can be realized.

Description

technical field [0001] The invention belongs to the field of process parameter detection in coal-fired power plants, in particular to a multi-sensor-based monitoring device and method for moisture content of pulverized coal and coal types. Background technique [0002] In coal-fired power plants, due to the different origins and types of coal, as well as the different storage and transportation conditions, the moisture content in pulverized coal is different. The difference in coal type and moisture content of pulverized coal will affect the measurement of various parameters in the transmission pipeline of the power plant and the calorific value of the boiler. In order to ensure the safe operation of the power plant, improve the combustion efficiency of the boiler, and prevent accidents, it is necessary to install a coal type and coal powder moisture content monitoring device in the pipeline. [0003] With the development of science and technology and the further deepening ...

Claims

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Application Information

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IPC IPC(8): G01N33/22G01K7/02G01K7/16G01R29/12G01P5/08
CPCG01K7/02G01K7/16G01N33/222G01P5/08G01R29/12
Inventor 钱相臣李冠冠闫勇谷珊郭冉冉徐伟程
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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