金屬管件氣密性檢測裝置的控制系統(tǒng)設計論文[帶圖紙].DOC

西安文理學院機械電子工程系本科畢業(yè)設計（論文）題目金屬管件氣密性檢測裝置的控制系統(tǒng)設計專業(yè)班級08級機械（2）班學號08102080212學生姓名杜迎賓指導教師韋煒設計所在單位西安文理學院2012年5月金屬管件氣密性檢測裝置的控制系統(tǒng)設計摘要：在日常的生產制造中，生產鑄造的管件、容器、內燃機缸蓋等零件，為了保證產品的品質和生產的安全，需要對這些零件的氣密性進行檢測，同時檢測裝置的自動化設計有利于提高檢測效率。本文改進設計了手動式檢測裝置的氣動系統(tǒng)，概述了改進后氣動系統(tǒng)的工作原理及動作實現過程；針對各種控制方案的優(yōu)缺點，確定用PLC做為控制系統(tǒng)的核心，并結合氣動回路設計出檢測裝置的控制系統(tǒng)。該系統(tǒng)通過PLC控制電磁閥的開閉，從而控制氣動回路中高壓氣體的流向，使裝置完成各個運動過程，實現管件氣密性檢測。該系統(tǒng)的運用可以使此裝置實現自動化檢測，提高檢測效率?？刂泼姘搴唵?，易于操作。系統(tǒng)以可編程控制器為控制核心，使系統(tǒng)抗干擾能力強、可維護性好，且可以在比較惡劣的環(huán)境下工作，以適應工業(yè)化檢測。關鍵詞：氣密性；水檢法；檢測；控制系統(tǒng)ControlSystemDesignofMetalPipeAirTightnessTestDeviceAbstract:Indailyproductionandmanufacturing,productionofthecastingpipefitting,container,theinternalcombustionenginecylinderheadandotherparts,inordertoensurethequalityoftheseproductsandsafetyinproduction.Detectingthesepartsoftheairtightnessshallbetaken,anddetectiondeviceautomationdesignatthesametimeisconducivetoenhancethedetectionefficiency.Thisthesisimprovedmanualdetectingdeviceofthepneumaticsystem,providedanoverviewoftheimprovedpneumaticsystemworkingprincipleandactionprocess；Accordingtoallkindsofcontrolscheme’scharacteristic,identifiedbyusingPLCasthecoreofthecontrolsystem,andthecombinationofpneumaticcircuitdesignforcontrolsystemofdetectingdevice.ThePLCcontrolsystemthroughtheelectromagneticvalve,therebycontrollingthepneumaticcircuithighpressuregasflowdirectiontocompleteeachmovementprocess,achievingpipeairtightnesstest.Usingthesystemcanmakethedevicerealizeautomaticdetection,highdetectionefficiency.Thecontrolpanelissimple,easytooperate.Thesystemtakestheprogrammablecontrollerasthecontrolcore,whichmakesstronganti-interferencecapability,easytomaintain,andcanbeintheruggedworkingenvironment,inordertoadapttotheindustrialdetection.Keywords:airtightness；Methodforwatertest；Detection；Controlsystem目錄第1頁目錄第一章緒論.............................................................................................................................................11.1選題的目的與意義.....................................................................................................................11.2國內外發(fā)展狀況與趨勢.............................................................................................................11.2.1國內外的研究狀況..........................................................................................................11.2.2發(fā)展趨勢..........................................................................................................................21.3課題的主要研究內容.................................................................................................................31.4本章小結.....................................................................................................................................3第二章控制系統(tǒng)的總體方案設計.........................................................................................................42.1氣動系統(tǒng)的改進設計.................................................................................................................42.1.1氣動回路系統(tǒng)的原理......................................................................................................42.1.2系統(tǒng)的運動過程..............................................................................................................72.2控制方案的選擇.........................................................................................................................82.3控制系統(tǒng)的硬件結構...............................................................................................................102.3.1系統(tǒng)的硬件組成..........................................................................................................102.3.2系統(tǒng)的硬件工作原理..................................................................................................112.4本章小結...................................................................................................................................11第三章系統(tǒng)的硬件設計.......................................................................................................................123.1可編程控制器（PLC）的選型................................................................................................123.1.1確定可編程控制器（PLC）的類型.............................................................................123.1.2預選PLC的系列型號..................................................................................................133.2方向控制閥的選擇...................................................................................................................143.2.1確定控制元件類型........................................................................................................143.2.2確定閥的機能................................................................................................................143.2.3預選閥的系列型號........................................................................................................163.3消聲器的選擇...........................................................................................................................173.3.1確定消聲器的類型........................................................................................................173.3.2確定消聲器的型號........................................................................................................183.4壓力表的選擇...........................................................................................................................183.4.1確定壓力表的類型........................................................................................................183.4.2確定壓力表的型號........................................................................................................203.5I/O分配表.................................................................................................................................213.6硬件系統(tǒng)接線圖.......................................................................................................................213.7本章小結...................................................................................................................................22第四章系統(tǒng)的軟件設計.......................................................................................................................23目錄第2頁4.1檢測氣密性裝置的控制要求...................................................................................................234.2PLC的程序設計.......................................................................................................................234.3PLC的程序調試.......................................................................................................................264.4本章小結...................................................................................................................................27結束語.....................................................................................................................................................28致謝.........................................................................................................................................................29參考文獻.................................................................................................................................................30附錄.........................................................................................................................................................31