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The application of new technology in coal-fired power plant automation

by:Sincerity     2020-11-10
Abstract: the application of new technology in coal-fired power plant automation information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. As deepening the reform of electric power industry from factory network, Internet access, bidding, the further implementation of the policy, can guarantee the safe and stable and economic operation for coal-fired power units, has become a top priority of the coal-fired power plant. Automation is the realization of thermal power unit safe and economic. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a new technology of automation in power plant the application of article details. As deepening the reform of electric power industry from factory network, Internet access, bidding, the further implementation of the policy, can guarantee the safe and stable and economic operation for coal-fired power units, has become a top priority of the coal-fired power plant. Automation is to realize the safe and economic operation of important technical measures for thermal power unit, so the coal-fired power plants are very attention to the development of automation technology, and constantly new technology of automation, in order to achieve reduce power generation cost, improve labor productivity, enhance the purpose of the ex-factory price competition ability. 近几年来,自动化技术的发展可以说是日新月异,新的科技成果不断涌现。 To sum up, the automation of the application of new technology in coal-fired power plant, mainly reflected in the following respects. 一、应用( A) 自动检测1火焰图像检测器目前,火电厂大型锅炉的单个燃烧器容量都非常大,因此,能否正确检测燃烧器火焰,将直接影响炉膛安全监控系统( FSSS) The reliability of the action. In order to prevent boiler explosion accident, must be to effectively detect the flame in the hearth. Ordinary optical detector ( Such as ultraviolet flame detector, optical flame detector and infrared flame detector) Rely on a light sensor to collect the average intensity of flame characteristics of the area, the limitation of the amount of information obtained often lead to cannot effectively distinguish as flame of outlook and background. Ordinary optical detector probe in the field of vision is very small, the flame volatile ( Boiler low-load running) Will report the hearth fire. In the future, therefore, the flame image detector will replace ordinary optical detector, which is the new trend of boiler flame detection system development. 火焰图像检测器不同于以往的工业电视,它有如下特点:( 1) Flame image detector adopted multiple miniature cameras ( CCD) Test each burner or or every corner of the combustion condition of each layer, it is greater than ordinary optical detector field of vision, gathering more information. ( 2) Of the flame in flame image detector using microprocessor processing, converts it into numerical form, analysis of operation, and displayed on the digital image display, at the same time, the data stored in computer memory, so that further processing. And industrial television is only part of the visual image display, information processing and memory functions. ( 3) The flame image detector by showing more processed image, make the operation staff know each flame brightness distribution, ignition and the combustion chamber of a stove or furnace condition, thus better combustion zui adjustments, and to reduce NOX emissions. And industrial TV do not have this function. 目前,国外的火焰图像检测器产品主要有日本三菱公司的DPTIS型和芬兰的DIMAC型。 A few domestic scientific research units and introduced a flame image detector products, and has set up a run on more than one domestic coal-fired units, basically achieve the correct results, and improve the speed alarm. 2光纤传感器( 1) 半导体光纤温度计半导体光纤温度计是利用半导体材料的光吸收随着温度的变化而变化的原理测温的。 When temperature increases, for example, through the light energy of semiconductor material is reduced, use a photoelectric element to measure the change of light energy, can be achieved by measuring the temperature value. Semiconductor optical fiber thermometer mainly used in ehv transformer hot spot temperature on the direct measurement of the measurement for the safe and economic operation of transformer has a decisive effect and service life. The insulation of the transformer coil zui hot aging due to overheating, light transformer is damaged, or a major accident. On the other hand, if the coil zui hot spot temperature is too low, did not get take full advantage of the ability of the transformer, reduce the economic benefits. Therefore, in order to make the zui better operation of the transformer, the measurement of the temperature of hot spot is very necessary. The past due to high voltage isolation problems not solve well, so direct measurement is very difficult. After using semiconductor optical fiber thermometer, can carry out remote telemetry, isolate the problem is solved. ( 2) 光纤转速表火电厂汽轮发电机组的转速是3000r/min,它是一个决定电网频率稳定与否的重要参数。 Conventional measuring method of the electric and magnetic due to electrical signal and the signal transmission lines are vulnerable to the interference of generator of strong electromagnetic field, instrument can't work normally. Optical fiber is used to measure the rotational speed is no this problem, optical tachometer by speed Light pulse conversion, optical fiber optical path and the signal processing device of three parts. On the steam turbine generator rotor fixed a speed gear plate, the edge of the gear plate 60 teeth, gear plate of each roll round, produce 60 optical pulses, the light pulse to signal processing device, through the optical fiber signal processing devices convert light pulses into electrical impulses, and then send electrical impulses to digital frequency meter. Due to the optical fiber is not subject to electromagnetic interference, thus ensuring the reliability of the tachometer.
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