本文選題：VOC　切入點(diǎn)：采樣罐清洗　出處：《武漢工程大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【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(jī)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(diǎn)。 因?yàn)楫?dāng)前國內(nèi)在VOC的采樣、實(shí)時(shí)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(gè)空白。所以，開發(fā)產(chǎn)品，提高技術(shù)已成為一個(gè)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(xué)校、各地環(huán)境監(jiān)測站、進(jìn)行常年定時(shí)監(jiān)測，當(dāng)采樣罐的VOC氣體裝滿時(shí)，就要及時(shí)的對采樣罐進(jìn)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(shí)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(jìn)行實(shí)時(shí)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(gè)系統(tǒng)的各項(xiàng)操作規(guī)格及參數(shù)設(shè)置。這個(gè)控制系統(tǒng)總體包含了整個(gè)的采集、液晶顯示和系統(tǒng)運(yùn)行部分，測量的限度較寬而且準(zhǔn)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(dòng)作。VOC采樣罐清洗系統(tǒng)的優(yōu)點(diǎn)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(jìn)行實(shí)時(shí)監(jiān)測和采樣。 本文設(shè)計(jì)的VOC采樣罐清洗系統(tǒng)是以STC單片機(jī)為控制核心，通過壓力、溫度傳感器對系統(tǒng)的溫度、壓力進(jìn)行實(shí)時(shí)的進(jìn)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(shí)時(shí)展現(xiàn)出來，單片機(jī)控制電磁閥的開閉控制充、抽氣的過程，同時(shí)控制繼電器通斷以控制初級(jí)泵、高級(jí)泵及加熱裝置的工作情況。
[Abstract]:In recent years, with the continuous development of industry in China, the problem of environmental pollution has become increasingly prominent. The widespread adverse effects of volatile organic compounds (VOC) (Volatile Organic Compounds) have become another focus of attention in the world after PM2.5TO _ 2O _ x and Freon. Because the current domestic VOC sampling, real-time online monitoring, cleaning development compared with foreign countries in the formulation of related policies is not perfect, low attention, technological development is late, related industries lag behind, Therefore, developing products and improving technology has become a crucial aspect. Now the methods of monitoring VOC are generally fixed at home and abroad. They are all about putting VOC sampling tanks in the EPA and schools. When the VOC gas of the sampling tank is filled, the sampling tank should be cleaned completely and thoroughly in time, so the appearance of the VOC cleaning system is of great significance. VOC sampling tank cleaning system is designed to display temperature value, pressure value, cleaning state, cleaning time, cleaning times, heater, temperature sensor and pressure sensor to sample temperature and pressure in real time. The user can set the operating specifications and parameters of the whole system according to their own specific needs. The control system contains the whole collection, LCD display and system operation parts. The measuring limit is wide and the accuracy is high, which is suitable for the measurement of temperature, pressure and other parameters, as well as the advantages of the cleaning system which controls the operation of various valves. VOC sampling tank not only can save manpower, but also can clean the sampling tank safely, intelligently and thoroughly. The temperature, pressure and state parameters of the tank can also be monitored and sampled in real time. The cleaning system of VOC sampling tank designed in this paper is based on STC single chip microcomputer. The temperature and pressure of the system are monitored by pressure and temperature sensor in real time. The monitoring data are displayed in real time on the industrial liquid crystal display screen. The single-chip microcomputer controls the opening and closing of solenoid valve to control the process of charging and pumping, and at the same time to control the operation of primary pump, advanced pump and heating device by controlling the opening and breaking of relay.
【學(xué)位授予單位】：武漢工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB490

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