【正文】
88 輸出控制伺服控制器來控制蒸汽調(diào)節(jié)閥的開啟度 , 定量地給汽水管道混 合器通以蒸汽 , 使池水按要求保持恒溫。為了補(bǔ)充因各種原因所造成的池水熱損失及加熱補(bǔ)充水需設(shè)置換熱設(shè)備。實(shí)際證明此方法可行且有效。 起動過程由兩臺泵輪值起動 , 即在程序中設(shè)定一個(gè)起動泵號 N(N = 2), 當(dāng)?shù)谝淮芜M(jìn)入水循環(huán)主程序時(shí) , 首先讀取泵號 N(并令 N 加 1), 決定首先開啟哪一號泵 , 若無故障運(yùn)行后 , 且在一個(gè)周期內(nèi)要求停泵 , 當(dāng)再次進(jìn)入水循環(huán)主程序時(shí) ,則 起動當(dāng)前泵。水處理循環(huán)系統(tǒng)是整個(gè)系統(tǒng)最為關(guān)鍵的地方,主要由兩臺循環(huán)水泵互為備用,循環(huán)水泵是為提供循環(huán)動力及循環(huán)處理水量而設(shè)置。鑒此通過對現(xiàn)有設(shè)備下的游泳池的研究,對于進(jìn)一步節(jié)水、節(jié)能,降低運(yùn)行成本有著重要的經(jīng)濟(jì)意義,并由此總結(jié)實(shí)踐經(jīng)驗(yàn),進(jìn)行理論分析,從而提出游泳池水處理的優(yōu)化設(shè)計(jì)。 就水處理系統(tǒng)來說,目前規(guī)范基本上是按市政給水處理廠的要求來制定的,在設(shè)計(jì)中均是按照規(guī)范中的專業(yè)比賽用連續(xù)處理運(yùn)行來設(shè)計(jì)的,而在實(shí)際運(yùn)行過程中,無 論是水質(zhì)還是投藥管理等,均不同于設(shè)計(jì)與規(guī)范,造成了水處理場地及設(shè)備的極大浪費(fèi),無形中增大了建設(shè)投資費(fèi)用。 國內(nèi)外游泳池水處理方式 為了節(jié)約用水,保護(hù)水資源保證水質(zhì)及衛(wèi)生指標(biāo),絕大多數(shù)游泳池采用循環(huán)凈化給水方式。近幾年 來,集娛樂、休閑與健身為一體的游泳場館的需求與建設(shè)可謂方興未艾 , 國家級大型游泳館、各種公共游泳館、家用游泳池、星級賓館的室內(nèi)游泳池等遍及全國城鎮(zhèn) 。特別是在暑期,熱浪滾滾,酷熱難耐,許多家長帶著放假 的孩子 , 興致勃勃地嬉戲暢游在游泳池之 “藍(lán)天碧水 ”間。 關(guān)鍵詞 : 可編程序控制器 ; S7300; PID溫控 遼寧 科技大學(xué) 本科生畢業(yè)設(shè)計(jì) 第 II 頁 PLC designing of natatorium water processing system Abstract With the development and advancement of industry, the Programmable Logic Controller that has been widely applied in a lot fields has bee focus nowadays. This designing is a material and concrete exhibition in the aspect of natatorium water processing system. This article mainly illustrates PID regulation and the application of Programmable Logic ControllerPLC, Siemens S7300 CPU313 and temperature sensor in the natatorium water processing system. The article has detailed introduced the S7300 PLC structure and usage. Furthermore, it has pletely plained the process of circulation water processing system and temperature regulation, as well as the concrete operation process. Comparing to the traditional one, the PLC controlling system has made the natatorium more safe and credible. Moreover, it not only can be operated easily, but also can save a lot of human resource and hardware for us too. As people have known, Programmable Logic Controller has bee the developing trend of industrial automation. Due to the open and distensible market, a lot of foreign products of PLC that provide more choices for us have entered. As people have known, a good choice of PLC will make the system more perfect. Keywords: Programmable Logic Controller ; S7300; PID temperature control 遼寧 科技大學(xué) 本科生畢業(yè)設(shè)計(jì) 第 III 頁 目 錄 摘 要 ......................................................................................................................................... I ABSTRACT............................................................................................................................ II 1 緒 論 .................................................................................................................................... 1 引言 .................................................................................................................................. 1 國內(nèi)外游泳池水處理方式 .............................................................................................. 1 本課題研究主要內(nèi)容 ...................................................................................................... 2 課題研究的意義 .............................................................................................................. 2 2 系統(tǒng)概述 ............................................................................................................................. 4 設(shè)計(jì)要求 .......................................................................................................................... 4 控制系統(tǒng)簡介 .................