【正文】 煙氣一起混合，在爐膛內(nèi)做火室燃燒，擴(kuò)大了燃料的適應(yīng)性。，設(shè)置高而長的前拱和矮而長的后拱，在前后拱的配合作用下，煙氣在爐膛中心形成一個近似α形的燃燒火焰，溫度高，并將尾部輻射熱充分反射至前部進(jìn)行烘干和引燃，保證目標(biāo)燃料較好的點燃和燃盡?！稛崴仩t安全技術(shù)監(jiān)察規(guī)程》的要求。總之，該鍋爐具有點火容易、燃燒狀況穩(wěn)定、升負(fù)荷快、操作簡便、安全性強(qiáng)、熱效率高、經(jīng)濟(jì)性好等優(yōu)點。千萬不要刪除行尾的分節(jié)符，此行不會被打印?！敖Y(jié)論”以前的所有正文內(nèi)容都要編寫在此行之前。 51 致謝經(jīng)過半年的忙碌和工作，本次畢業(yè)設(shè)計已經(jīng)接近尾聲，作為一個本科生的畢業(yè)設(shè)計，由于經(jīng)驗的匱乏，難免有許多考慮不周全的地方，如果沒有導(dǎo)師的督促指導(dǎo)，以及一起工作的同學(xué)們的支持，想要完成這個設(shè)計是難以想象的。 在這里首先要感謝我的指導(dǎo)老師黃波。老師平日里工作繁多，但在我做畢業(yè)設(shè)計的每個階段，從查閱資料做開題報告到中期檢查，后期詳細(xì)設(shè)計，圖紙修改等整個過程中都給予了我悉心的指導(dǎo)，幫我改正了很多設(shè)計計算上及作圖上出現(xiàn)的錯誤，給了我很大的幫助畢業(yè)設(shè)計的結(jié)束也是大學(xué)本科四年的句號。最后，我還要感謝我的母?！枮I理工大學(xué)，是母校給我們提供了優(yōu)良的學(xué)習(xí)環(huán)境；另外，我還要感謝那些曾給我授過課的每一位老師，是你們教會我專業(yè)知識。我不會忘記你們的。參考文獻(xiàn)1. 張偉，夏洪敏，孫順亭等．新型水火管鍋殼式鍋爐的改進(jìn)設(shè)計．工業(yè)鍋爐．上海工業(yè)鍋爐研究所，2002(2):23252. 李柏生，張偉，班昆等．新型水火管鍋殼式鍋爐的安全技術(shù)和經(jīng)濟(jì)性．工業(yè)鍋爐．上海工業(yè)鍋爐研究所，2001(1):14183. 李之光，王昌明．新型水火管鍋殼鍋爐開發(fā)十七年總結(jié)．，2001(1):1134. 李之光, 王昌明. 蒸噸大容量新型水火管鍋殼鍋爐的發(fā)展. 工業(yè)鍋爐. 上海工業(yè)鍋爐研究所，1999(4):595. 趙偉，張喜祥，劉朝軍． Ⅱ型鍋爐的爐拱改造．發(fā)電設(shè)備．上海電站設(shè)備成套設(shè)計研究所，2002(3):30316. 趙明泉等. 鍋爐結(jié)構(gòu)與設(shè)計. 哈爾濱工業(yè)大學(xué)出版社， 1997:20307. 哈爾濱工業(yè)大學(xué)熱能工程教研室．小型鍋爐設(shè)計與改裝．第二版．科學(xué)出版社，1990:8138. 張忠銘．單頭螺紋煙管在工業(yè)鍋爐中的應(yīng)用．機(jī)械工業(yè)出版社，1992:6109. 馮俊凱，沈幼庭，楊瑞昌. 鍋爐原理及計算. 第三版. 科學(xué)出版社, 2003:235410. 林宗虎，徐通模．實用鍋爐手冊．化學(xué)工業(yè)出版社，1999:315011. 李之光， 王昌明等. 改進(jìn)型水火管鍋殼鍋爐的研究與開發(fā). 熱能動力工程，1990(1):141912. 劉興家。哈爾濱地圖出版社，2003:4217013. Tsuji Y. Discrete particle similation of gassolid flows．KONA，2004:576814. ,HARNEY. Theory And Design Of Modern Pressure Vessels. SECOND EDIT ION，1974:425315. . Kim, model on water level dynamics in natural circulation drumtype boilers,2005:2026附錄A英文原文Industrial steam boilers and implementation of process automationAbstractThis paper describes the industrial boiler control system principle, enunciated the boiler control in several important control loop control algorithm, and the frequency converter application in Boiler, boiler control system put forward the basic design ideas and Implementation of all aspects of control.Keywords:industrial steam boiler furnace pressure and steam pressure impulse frequency control level 3I. IntroductionBoiler control, is a new technology developed in recent years, it is the microputer software, hardware, automation, boiler and energy saving technology in close connection with a number of the product of our existing medium and small boilers more than30million units, annual consumption Coal accounts for China39。s coal production of1 / 3,most of the existing industrial boilers are still in high energy consumption, waste and serious pollution of production status.Improve the thermal efficiency, reduce coal consumption, lower power consumption, using puter control is a farreaching work.Computer control of industrial boiler control mode and pared to the original instrument has the following obvious advantages:1.Intuitive and focused display of operational parameters boiler.Can quickly calculate the start and stop unit in the normal course of operation and useful data can be displayed simultaneously on the monitor boiler water level, pressure, vacuum furnace, gas content and temperature measuring points, run dozens of coalfired capacity parameters of the instantaneous value, accumulated value and given value, and according to need in the boiler structure to indicate the corresponding location on the screen shows the parameter values.Gives the visual image, to reduce fatigue and errors observed。2.Can be required at any time print or regular print, can be accurately recorded operating conditions, to facilitate tracing and analysis of the accident, to prevent accidents concealed omitted phenomenon。3.In operation at any time convenient to modify various operating parameters of the control value, and modify the system control parameters。4.Reduced display instruments, can also use the software to replace the many plex instrumentation unit, (such as adders, differential, filter, limiter alarm, etc.), thus reducing the investment to reduce the failure rate。5.Improve the thermal efficiency of boilers.Running from the boiler in the view, after using putercontrolled thermal efficiency than before510%increase, according to user statistics, a20Tboiler, the annual average load of70%to an average thermal efficiency increased by5%,the annual festival800tons of coal, per ton of coal380for calculating the annual savings304,000yuan。6.Boiler system includes blower, draft fan, pump, and other highpower motor, due to characteristics of the boiler itself and the selection factors, most of the time these fans will not be at full capacity output, the original way of using the valve and the baffle control the flow of waste is very serious.By fan water pump can be an energysaving inverter control30% 40%。7.Most of the boiler is out of a multiinput, nonlinear dynamic objects, many mediation capacity and the amount to be transferred there is coupling between the channels.For example, when the boiler load change, all will change the amount to be transferred.Guer ideal control solution should be multivariable dual control program.The establishment of solution models and algorithms even more convenient through the puter realized。8.Boiler control system has been expanded to constitute a hierarchical control system, the other nodes of the plant Ethernet.This is a modern enterprise management indispensable。9.As a boiler control unit, whose main task is to ensure the safety of the boiler, stability, economic operation, which can reduce the labor intensity.The use of putercontrolled boiler control system, there is very thoughtful of security mechanisms, you can set more sound and light alarm, and automatic shutdown chain.Eliminate as a major accident caused by human negligence.Integrated the advantages of the above can be predicted using putercontrolled boiler system is the industry 39。s explore the principles of the boiler control system and structure.II. the boiler control system, the general structure and working principleCommon industrial boiler system shown