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ѹˮϵͳѡ

ùˮգ


ˮ/ˮˮˮ


ص㣺ˮѹ㶨дˮ


ȱ㣺Ҫˮˮ䣬󣬲۵ȡ


ѹˮܵѹ


ص㣺죬Ⱦıѹޣѹı乩ˮѹ


ȱ㣺ҪѹޣͶʴѹ仯ЧʵͣܺĴ


ѹˮ޹ˮDZˮôˮˮޣѹйˮ


Ƶѹˮ


ѹҪ湩ˮȲ仯ֹˮѹ䣻ѹˮϵͳɣƵPLC


ҪӦóϣ߲㽨СҵˮҵҪѹˮȴˮѭˮѭ¯ˮȡ


յϵͳˮѹϵͳũȣˮȪѹϵͳ


ˮûеԣ


ˮùˮģͼ


m3/ṢMọ̈̄Mʵ̣Mʧ̣M裻ѹ



ˮϵͳԣ


ԣԽԽ1


ԣԽϵͳԽС2


ϵͳ㣺


ߺ͹ߵĽ㣬ˮ㣬A


ſ100%ת100%㣬Ȼ㣻


ˮʣPG=CPHTQ


CpΪ


ˮϵͳĶODAGȡ



ԭ



ſƷùˮ䣬ıı乩ˮ淧ſȸıı䣬Բ䡣QAQBߴ23ˮOEBFȡ


תٿƷıõӦûҪ


תٸı䣬Ըı䣬Բ䡣


QAQBߴ14ˮOECHȡ


⣺ˮʵıȽϣ


ԼĹHCBFȡ


õĹЧʵıȽϣ


Y=C1(Q/N)-C2(Q/N)


C1C2Ϊ


綯ЧʵıȽϣԣЧʺ͹ʵͣƵѹЧʡ



ˮQHPתN֮Ĺϵ


Q1/Q2n1/n2


H1/H2(n1/n2)2


P1/P2(n1/n2)3


֪QתNһηȣHתNƽȣPתNȡ


ת½20%ṦʶӦ½49%ɴ˿ɼñƵٿԴ͵ĵġ


Ƶٺѹˮϵͳ


ѹˮĿģûΪˮϵͳĻƶ󣻹ܵˮѹΪСIJαñƵڲPIDѹ



̨ˮñƵʱлƣ


̨ˮͬʱˮö࿪ٿ112324351X



1Xл̷


Źɹ̣״̬


綯ڲͬʱ̵ļݣ±



϶ϵͳƶ̣


ƶת٣Nt=NMNe^(-T/tM)tMеʱ䳣


ͬеtMܴˮtM0.7~1s


лע


һ㣬лʱתٲڶתٵ80%


л


лӴӴ1.5~2.5


ˮˮλƣ


ˮˮλƣˮ棨Һ棩λһΧڵĿơ


Ӧóϣˮˮ¯ˮλҺƣ


ˮˮˮ棨Һ棩λһΧڵĿơ


ˮλʱLLʱˮãˮλLHʱͣˮãÿṩһݻˮ



ˮˮλƽܷ


ݣ


ͬת£ṩͬݻˮΪȽϵĻ


תN1,Q1,ṩݻVʱt1


תN2,Q2,ṩݻVʱt2


ôV=Q1*t1=Q2*t2


ܾ


תn1=nN£ԶݻVʱt1=1hôĵ繦ΪʣĵĵΪW1=P1*1


ת½Ϊn2=0.8nN£ôˮQ2=0.8Q1,ݻVʱt2=t1/0.8=1.25hôĵ繦P2=0.8^3*P1=0.512P1ݻVˮĵĵΪW2=P2*1.25=0.512P1*1.25=0.64W1


ô߱ȽϽΪ36%


յϵͳɣ


䶳ˮѭϵͳȴˮѭϵͳ


ˮõתֻı޹ء


תٳȣˮùתٵĶηȡ



䶳ˮѭϵͳ


ѹƣѹΪݣ֤¥䶳ˮ㹻ѹ


¶Ȼ²ƣ֤¶ȡ


ۺϿƣ


ѹΪ¶Ϊ


¶ΪѹΪ


ϵͳṹ



Ƶѹˮԭ


ƵѹˮԭˮñɣˮñˮõƵġ


ˮõɣ





ͼʾȫתn1תn2ʱˮõߡǽQbHbΪˮöϵͳˮΪQaʱͼn2ǿԿת½Ϊn2ʱȻԱ֤ϵͳѹHbӹ߿Կʱn1תʱĹʲP=Pa-PʡĵܣHɿǽʡ̣ɴ˿֪ñƵƿʵѹʡĹܡ


Ƶѹˮֹͨģʽ


1.Ƶù̶ģʽ


Ͷ룺ˮСһ̨ڹƵѹµһ̨ƵõٺѹˮˮʱƵõתƵתƵת٣ˮһɱƵˮԶһ̨ƵͶ룬ùƵṩǺ㶨(Ƶתٺѹµ),ƵðͬԭͶ롣


˳ˮ½Ƶٱõת½Ƶ½ ʱ򣬱ƵˮһָԶرһ̨Ƶʹ֮ˮΪ˼ٹƵԶͶ򳬳ʱijˮĻijͶʱƵõת Զ½ȻѹˮҪ


2.Ƶѭģʽ


Ͷ룺ֹˮģʽУˮСڱƵںѹƵµʱɱƵԶٹˮˮ󣬱ƵõתߣƵõתߵƵת٣ɱƵˮưѸ̨ˮлɹƵֱӹ(ͨƵ)Ƶһ̨Ͷ빤ˮþͬķʽͶ롣


˳ˮСƵðر˳ұ˳˳Ͷȹر˳ԭɱƵơ


PIDƵĻԭںѹˮеӦã


PID㷨ͨƣϵͳԣԽƣӶʹPIDкܴԺӦԡ


PIDǣProportional()Integral֣


Differential΢֣


PID㷨ϵͳвõPIDƹΪ



P(t)Kp棻e(t)ϵͳĿƫTiʱ䳣Td΢ʱ䳣



ѹˮϵͳĹɣ




ͼ֪ƵźţĿźźͷźš


1ĿźXTVRFϵõźţźһѹĿĿӦֵͨðٷʾĿźҲɼֱӸͨӵ·


2źXFѹSPźţźһӳʵѹźš


PIDԭͼ


ͼʾΪƵѹˮϵͳĿƿͼ


ԭѹùˮʵѹźűȽϽD/AתƱƵƵʣˮõ綯תԴﵽѹĿġ



úѹˮϵͳɣ



Ƶźţ


1źXT


źŵĴС˺ҪѹĿĿй⣬ѹSPйءûҪĹˮѹΪ0.3MPaѹSPΪ01MPaֵӦ趨Ϊ30


2źXFѹSPźţźһӳʵѹźš


Ʒȷ


ҪȷƷΪͨñƵ+PLC(PID)+ѹ



Ƶѹԭͼ



ѹˮϵͳ


ѹˮϵͳɣ


(1)ִл̨ˮáһ̨Сʸˮã


(2)ϢѹҺλ


(3)ƻPLC(PID)Ƶ


(4)װá



Ƶ·SAΪֶ/Զתء


SA1λΪֶ״̬2״̬ΪԶ״̬


ֶʱðťSB1SB 8̨õ/ͣ͵ŷYV2ͨ/ϣ


ԶʱϵͳPLCС


HL10ΪԶ״̬Դָʾơ


ԱƵƵʽиλʱֻṩһźţPLCΪ4ռΪһ鹲һCOMˣϵͳûʣµCOM飬ͨһм̵KAĴԱƵиƵơ


ͼеY000Y005Y010Y015ΪPLC̵Ĵ㡣


ѹˮϵͳʹõPLCԪ书ܣ



PLCϵͳѡͣ


Ͽ֪ϵͳп612ģ1ģ1


ѡFX2N-32MRһ̨һ̨ģչģFX2N-4ADһ̨ģչģFX2N-2DAϵͳ


PLCϵͳͼʾ



ѹˮϵͳ


ϵͳĵܿͼ



ҪԪѡͣ


ˮûѡͣ


ˮûѡһҪȷƽУҪڸЧУȡýϺõĽЧ



ıùԭ



PLCѡͣPLCƵѹˮϵͳĺģҪɶϵͳŵIJɼԪĿơѹʵԼݽ


ƵǸƵĵĹѡģҪ󼰱PLCͨѡ±Ƶ


磬FR-A540-55KͱƵ,Ϊ55Kw



ѹѡͣѹɼˮѹɱջϵͳزٵһҪѡYTZ-150ԶѹXMT-1270ʵѹļ⡢ʾͱ͡ѹΧ0~1Mpa1.0һ·4~20mAźŸPLCչģ顣



ҺλѡҺλǿˮˮλֹתҪѡʽҺλơ



ѹˮϵͳPLCչģΧͼ



ʱźSA1X000Ϊ1


ˮλźŷֱӦΪX001X002DZˮûʱΪ0¶ʱΪ1


PLCƣ֣ӳжϳ


ϵͳʼһЩڳʼӳɣ


ʱжϳʵPIDƵĶʱƣлźŵɡӴ߼źŵۺϼȣ


˫ѹѹֵDzַʽֱڳ趨ġˮʱϵͳ趨ֵΪ̵70%ˮʱϵͳ趨ֵΪ̵90%


ϵͳPIDн˱ͻֿƣ·ʱ䳣̼ͨȷһԴﵽſЧ



Ƶѹˮϵͳͼ



ͨѹѹѹźžԶƵ·ʶ𡢷Ŵ󣬿ƽӴӶʹˮøݹѹ仯ԶкֹͣﵽԶˮĿġ


̣ˮˮֹͨطע壬Ӷʹѹ󣬵ѹﵽ趨ѹʱѹԶԶرˮãʹˮֹͣСڹˮѹڹˮѹԶѹˮѹС趨ѹʱԶˮԶˮעˮʹ豸ͣˮȫԶС


Ƶѹˮṹʾͼ



Ƶѹˮ׼ãˮ(ݹˮϵͳѡˮͺ̨)ع(ˮͺš̨Ƶзʽѡ)Ƶ(ڵع)Զѹ(ǵDZƥԣعͬʱɹ)ͨѹѹޣ(ֹط/բ/Լͷ)·(ˮܹһ)(ֺ̼)·








Ĥѹ޵ѡͣ


ȷСʱˮQ



QСʱˮ(m3/h)


m ˮ


qrˮ׼(/ˡ)


Tˮʱ(Сʱ)һȡ24Сʱ


KСʱ仯ϵһȡ1.8-2.5


2.ȷѹˮ豸͹ѹP1߹ѹP2



P1͹ѹ(MPa)


h1ˮˮλߵĴֱ(m)


h2سʧ(m)


h3ֲʧ(m)


h4ˮˮͷ(m)


h5ˮͷ(m)(Ҫʱ)


102ϵ1 Mpa102mH2O



P2߹ѹ(MPa)


͹ѹ߹ѹ֮ȣP1/P2һȡ0.650.85


3.Q(P1+P2)/2ѡˮ


ѡˮõΪHΪqbH=(P1+P2)/2ʱqb1.2Q


4.ˮõȷѹˮ޵ˮݻVs



Vsˮϵͳѹ޵ݻ(m3)


Cȫϵһȡ1.01.3


qbˮü(m3/h)


һ̨ˮH=(P1+P2)/2ʱҸӦˮߵĸЧڡ


5.ȷѹˮͺţ



Vܡѹˮݻ(m3)


¡ѹˮݻϵȡ1.05


ѹˮѹ֮ȣȡֵP2ʱӦһ¡


ѹˮ޵ݻVܼ߹ѹP2ѹȷѹˮ޵ĹʹV0Vܣһ̨޲Ҫ󣬿ǫ̈ϣʹV0 VܣٸP2ѡѹˮ޵Ĺѹȼ


򿪹أˮϵͳп踡򿪹أˮˮλ½һֵʱ(ˮλֵ趨)򿪹źţˮõͣ



ñƵٺѹˮʽȥˮλˮԼѹˮʽȣ豸ͶеľԣϵͳȶԡɿԡԶ̶ȵȷ涼޷ƣҾԵĽЧ


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