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浅谈热风炉在农作物方面的节能效果稳定性

文章出处:   发布时间:2019-07-28 08:58:53   浏览:13

浅谈热风炉在农作物方面的节能效果稳定性,目前热风炉的使用已经遍及到广阔的各行各业当中.时下较流行的是在农作物方面,由于节能性比较好,已被广泛使用.据热风炉厂家调查发现得知:随着农业经济的迅速发展,农作物的干燥技术的落后与农作物的种植产量急剧上升成为了严重的矛盾。烘干相关的机械设备的研究,特别是热风炉的设计和智能化的研究成为急需要解决的关键问题。本企业在国家提倡建立节约型和智能化的社会背景下,针对农作物干燥的热风炉耗能高,效率低,人工成本高及干燥产品质量差的缺点。以农作物金银花和黄花菜的干燥工艺参数为依据,设计了一套热风炉及其配套的智能控制系统,并对热风炉出风口热风的风速和温度的稳定性进行试验验证,而且在控制系统中,对热风炉出风口热风温度控制参数采用了模糊自适PID算法,其本文的主要研究内容有如下的几个方面:
Talking about the stability of energy-saving effect of hot-blast stove in crops, the use of hot-blast stove has spread to a wide range of industries. Nowadays, it is more popular in crops, because of its better energy-saving, it has been widely used. According to the investigation of hot-blast stove manufacturers, it is known that with the rapid development of agricultural economy, crops are dry. The backwardness of drying technology and the sharp increase of crop production have become a serious contradiction. The research of drying related mechanical equipment, especially the design and intelligent research of hot blast stove, has become a key problem to be solved urgently. Under the background of advocating saving and intellectualization in our country, our company aims at the shortcomings of high energy consumption, low efficiency, high labor cost and poor quality of drying products of hot blast stoves for crop drying. Based on the drying process parameters of honeysuckle and cauliflower, a set of hot stove and its supporting intelligent control system was designed, and the stability of hot air velocity and temperature at the outlet of hot stove was tested and verified. In the control system, the fuzzy self-adaptive PID was used to calculate the hot air temperature control parameters at the outlet of hot stove. The main contents of this paper are as follows: (1)讲述了农作物干燥热风炉的种类和智能控制系统在国内外研究现状和发展趋势。选用了以生物质作为燃料,以循环水进行热交换介质,分别对控制风机转速来对热风风速进行智能控制和控制水泵电机的转速来实现温度的随时调节;
(1) The types of crop drying hot blast stoves and the research status and development trend of intelligent control system at home and abroad are described. Using biomass as fuel and circulating water as heat exchange medium, the speed of fan is controlled intelligently and the speed of pump motor is controlled to adjust the temperature at any time.

(2)设计了农作物干燥热风炉的结构部分。通过数学建模,对流体的经济流速分析,确定了热风炉燃料炉膛部分、水箱部分和热交换部分的形状和尺寸。并选型材料,使在经济的情况下运行;
(2) The structure of the hot blast stove for crop drying was designed. The shape and size of fuel furnace, water tank and heat exchange part of hot blast stove are determined by mathematical modeling and analysis of economic flow velocity of fluid. And select material to make it run under economic conditions.

(3)设计了热风炉控制系统的硬件部。具体包括传感器检测电路、电源转换电路、风机水泵转速控制电路、人机交换电路等;
(3) The hardware of hot stove control system is designed. Specifically, it includes sensor detection circuit, power conversion circuit, fan and pump speed control circuit, man-machine switching circuit, etc.

(4)设计了热风炉的智能控制系统。保证出风口热风温度和风速稳定,以单片机STM32作为主控,采用了模糊自适PID算法来控制温度,通过Matlab等工具进行仿真试验;
(4) The intelligent control system of hot stove is designed. To ensure the stability of hot air temperature and wind speed in the outlet, STM32 is used as the main control unit, and the fuzzy self-adaptive PID algorithm is used to control the temperature. The simulation experiment is carried out by means of MATLAB and other tools.

(5)对热风炉样机进行验证试验,通过改变指标,对三种温度和风速模式都进行验证,终得到的出风口的温度与标准温度相比较,得出稳定性为95%以上。
(5) The validation test of the hot blast stove prototype is carried out. By changing the index, the three temperature and wind speed modes are validated. Compared with the standard temperature, the final temperature of the outlet is more than 95%.

在热风炉系统采用了助燃空气、高炉煤气双预热技术。助燃空气预热是通过建2座卡普金式顶燃式预热炉来实现的,高炉煤气预热是通过在热风炉烟道上设置一台管式换热器回收烟气余热来实现的。这种双预热技术实现了在使用100%高炉煤气条件下达到风温1200℃的目标。
Double preheating technology of combustion-supporting air and blast furnace gas is adopted in hot blast stove system. Combustion-supporting air preheating is realized by building two Kapkin top-burning preheating furnaces, and blast furnace gas preheating is realized by installing a tube heat exchanger in the flue of hot blast stove to recover the waste heat of flue gas. This dual preheating technology achieves the goal of air temperature 1200 C under the condition of using 100% blast furnace gas.

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