VOC采樣罐清洗系統(tǒng)研究與設(shè)計

【作者】 付述龍；

【導(dǎo)師】 楊述斌

【作者基本信息】 武漢工程大學 ， 控制工程， 2014， 碩士

【摘要】 近年來，我國隨著工業(yè)不斷發(fā)展，環(huán)境污染問題日益凸顯。揮發(fā)性有機化合物(VOC即Volatile Organic Compounds的簡稱)的廣泛惡劣影響是在PM2.5、SO2、NOx和氟利昂后成為世界各國關(guān)注的又一焦點。因為當前國內(nèi)在VOC的采樣、實時在線監(jiān)測、清洗方面發(fā)展相對國外而言制定相關(guān)政策不健全，重視程度低，技術(shù)發(fā)展較晚，相關(guān)產(chǎn)業(yè)滯后，這方面的產(chǎn)品更是一個空白。所以，開發(fā)產(chǎn)品，提高技術(shù)已成為一個至關(guān)重要的方面?，F(xiàn)在國內(nèi)外監(jiān)測VOC的方法普遍固定，都是將VOC采樣罐放在環(huán)保局、學校、各地環(huán)境監(jiān)測站、進行常年定時監(jiān)測，當采樣罐的VOC氣體裝滿時，就要及時的對采樣罐進行完整徹底的清洗，所以VOC清洗系統(tǒng)的出現(xiàn)具有重大意義。VOC采樣罐清洗系統(tǒng)是控制器以液晶屏的方式顯示溫度值、壓力值、清洗狀態(tài)、清洗時間、清洗次數(shù)，有加熱器、溫度傳感器、壓力傳感器對溫度、壓力進行實時采樣，兼?zhèn)滢D(zhuǎn)換壓力的作用，使用者可以根據(jù)自身特定的需要設(shè)置整個系統(tǒng)的各項操作規(guī)格及參數(shù)設(shè)置。這個控制系統(tǒng)總體包含了整個的采集、液晶顯示和系統(tǒng)運行部分，測量的限度較寬而且準確度高，適合于溫度、壓力等參數(shù)的測量以及控制各種閥的動作。VOC采樣罐清洗系統(tǒng)的優(yōu)點是不僅可以節(jié)省人力，安全智能徹底的清洗采樣罐，而且還可以對采樣罐的溫度、壓力、狀態(tài)參數(shù)進行實時監(jiān)測和采樣。本文設(shè)計的VOC采樣罐清洗系統(tǒng)是以STC單片機為控制核心，通過壓力、溫度傳感器對系統(tǒng)的溫度、壓力進行實時的進行監(jiān)測，而且，把監(jiān)測的數(shù)據(jù)在工業(yè)液晶顯示屏上實時展現(xiàn)出來，單片機控制電磁閥的開閉控制充、抽氣的過程，同時控制繼電器通斷以控制初級泵、高級泵及加熱裝置的工作情況。 還原

【Abstract】 In recent years, with the continuous development of industry, environmentalpollution problems have become increasingly prominent. VOCs (Volatile OrganicCompounds, hereinafter referred to as VOC) contamination is the second PM2.5, SO2,NOx and Freon become another focus of world attention.Our VOC monitoring and control in the study started late, the development time isshort, so the technology is relatively backward, the level is low, this product is a blank.Therefore, the development of products, improve and enhance the technology hasbecome a crucial aspect of it. VOC monitoring methods are generally fixed at home andabroad, are placed on the EPA VOC canister, schools, local environmental monitoring,conduct regular monitoring perennial, when the VOC gas canister filled, it is necessaryand timely for canister complete a thorough cleaning, so there VOC cleaning system isof great significance.VOC canister cleaning system controller displays the temperature, pressure, cleaningstate, the cleaning time, cleaning times, a heater, a temperature sensor, a pressuresensor for temperature, pressure sampling in real time, in function of a pressuretransmitter mode LCD users can set the system parameters themselves through the keyprogramming. The controller sets the measurement, display and control in one, highaccuracy, wide measurement range, suitable for temperature, pressure measurement andcontrol body movements. Advantages VOC canister cleaning system is not only saveslabor, Smart thorough cleaning canister and the canister may be temperature, pressure,status, real-time monitoring and sampling parameters.This design is based on VOC sampling tank cleaning system STC microcontrollercore, by the temperature, pressure sensors for temperature, pressure measurement, byindustrial LCD screen LCD for temperature, pressure display, microprocessor controlsolenoid valve to control the opening and closing charge, extraction process, while the control relay to control the primary pump off, working conditions and advanced pumpheating device. The system is not only reliable, but cost is also high. 還原

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