【正文】 t temperature control, the use of PID control to adjust, through continuous adjusting its parameters to determine a more accurate parameter values by adjusting opening of the cold water valve to control the flow of adjustment of the outlet temperature of the heat flow.This design uses PCS7 to plete the system of automatic control by PCS7 software on the system hardware and software configuration, plete control of the outlet temperature of the programming, the last operating normally by HMI monitoring and control system.Keywords Heat。關(guān)鍵詞 換熱器。但由于目前制造工藝的限制,控制方式的單一性,換熱器普遍存在控制效果差,換熱效率低的現(xiàn)象,造成能源的浪費(fèi)。以工業(yè)上常用的列管式換熱器為例,熱流體和冷流體通過對(duì)流熱傳導(dǎo)達(dá)到換熱的目的,從而使換熱器物料出口溫度滿足工業(yè)生產(chǎn)的需求。本設(shè)計(jì)利用 PCS7 來完成整個(gè)系統(tǒng)自動(dòng)控制，通過 PCS7 軟件對(duì)系統(tǒng)進(jìn)行硬件和軟件組態(tài)，完成控制出口溫度的編程，最后通過人機(jī)界面監(jiān)控維護(hù)控制系統(tǒng)正常運(yùn)行。PCS7I / 41AbstractHeat exchanger as a standard process equipment has been widely used in the field of power engineering and other process industries. In the industry monly used shell and tube heat exchanger, for example, the hot fluid and cold fluid heat transfer by convection heat transfer to achieve the purpose, so that the heat exchanger outlet temperature of the material to meet the needs of industrial production. However, as the manufacturing process constraints, control unity, mon heat exchanger control is poor, the phenomenon of low heat transfer efficiency, resulting in waste of energy. How to improve the control performance of the heat exchanger to improve heat transfer efficiency, to ease China39。 PCS7目 錄摘 要 .............................................................................................................................IAbstract..........................................................................................................................II目 錄 ....................................................................................................................III第 1 章 緒論 ..................................................................................................................1 換熱器設(shè)備 ......................................................................................................1 選題背景及意義 ..............................................................................................1 國內(nèi)外研究現(xiàn)狀及發(fā)展史 ..............................................................................2 本設(shè)計(jì)主要內(nèi)容 ..............................................................................................4 本章小結(jié) ..........................................................................................................4第 2 章 系統(tǒng)工藝流程及算法控制 ..............................................................................5 SMPT1000 實(shí)驗(yàn)平臺(tái)及換熱器 ......................................................................5 換熱器 ..............................................................................................................6 高階換熱器 ...............................................................................................6 換熱器工作原理 ........................................................................................6 PID 控制 ...........................................................................................................7 PID 基本介紹 ............................................................................................7 參數(shù)整定 .................................................................................................10 主要功能和應(yīng)用 .....................................................................................12 控制系統(tǒng)的設(shè)計(jì) ............................................................................................13 溫度控制特點(diǎn) ..........................................................................................13 換熱器溫度控制系統(tǒng) .............................................................................13 本章小結(jié) ........................................................................................................15第 3 章基于 PCS7 實(shí)現(xiàn)系統(tǒng)控制 ...............................................................................16 PCS7 簡(jiǎn)介 ......................................................................................................16 PCS7 作用 ......................................................................................................16 PCS7 控制系統(tǒng)結(jié)構(gòu) .......................................................................................17 工程項(xiàng)目的建立 ............................................................................................18 控制系統(tǒng)硬件設(shè)計(jì)與組態(tài) ............................................................................19 硬件系統(tǒng)組成 .........................................................................................19 硬件選型選型以及通訊 .........................................................................20 操作員站組態(tài) .........................................................................................22 網(wǎng)絡(luò)連接組態(tài) .........................................................................................23 軟件組態(tài) ........................................................................................................23III / 41 系統(tǒng)軟件程序 ..........................................................................................23 與硬件地址的連接 ..................................................................................24 系統(tǒng)報(bào)警軟件程序 ..................................................................................25 人機(jī)界面創(chuàng)建 ................................................................................................25 過程趨勢(shì)畫面的創(chuàng)建 ....................................................................................26第 4 章控制系統(tǒng)的投運(yùn) ..............................................................................................28 運(yùn)前的準(zhǔn)備工作 ............................................................................................28 副環(huán)參數(shù)整定 ................................................................................................28 主環(huán)參數(shù)整定 ...............................