Kumanzi anamhlanjeumhlaba wokulinganisaIimitha zamanzi ze-electromagnetic kunye neemitha zamanzi ze-ultrasonic zihlukile njengeetekhnoloji ezimbini ezidumileyo neziphucukileyo. Uhlobo ngalunye luneempawu zalo ezizodwa, ezithathwe kwimigaqo yalo yokusebenza eyahlukileyo. Ukuqonda la mahluko kubalulekile kwiinkonzo zamanzi, abasebenzisi bemizi-mveliso, kunye nabanye abachaphazelekayo ukuze benze izigqibo ezinolwazi xa bekhetha isisombululo esifanelekileyo sokulinganisa amanzi kwizicelo zabo ezithile.
1. Imigaqo Yokusebenza
Iimitha zamanzi ze-electromagnetic zisebenza ngokusekelwe kumthetho kaFaraday wokungeniswa kwe-electromagnetic. Xa ulwelo oluqhubayo, olufana namanzi, luhamba ngentsimi yemagnethi eyenziwe ngaphakathi kwimitha, amandla e-electromotive (EMF) ayabangelwa. Le EMF ibangelwayo ihambelana nesantya sokuhamba kolwelo. Imitha ilinganisa le EMF isebenzisa ii-electrodes ezibekwe kumacala ahlukeneyo etyhubhu yokugeleza. Ngokulinganisa amandla evolthi ebangelwayo, isantya samanzi sinokumiselwa. Ekubeni indawo enqamlezileyo yetyhubhu yokugeleza iyaziwa, izinga lokugeleza kwamanzi levolumetric linokubalwa kusetyenziswa ifomula
Q=v×A, apho i-Qi iyindlela yokuhamba kwamanzi, i-v yisantya, kwaye i-A yindawo enqamlezileyo.
1.2 Iimitha zamanzi ze-Ultrasonic
Iimitha zamanzi ze-ultrasonic, kwelinye icala, zisebenzisa umgaqo wexesha lokubhabha kwamaza e-ultrasound kulwelo. Zilinganisa umahluko wexesha phakathi kokusasazwa kwemiqondiso ye-ultrasound ukusuka phezulu ukuya ezantsi ukuya phezulu. Xa igagasi le-ultrasonic lidluliselwa emanzini, isantya salo sokusasazeka sichaphazeleka lisantya sokuhamba kwamanzi. Ukuba igagasi lithunyelwa kwicala lokuhamba kwamanzi (ezantsi), liya kuhamba ngokukhawuleza, kwaye ukuba lithunyelwa ngokuchasene nokuhamba kwamanzi (ephezulu), liya kuhamba kancinci. Ngokulinganisa ngokuchanekileyo lo mahluko wexesha, isantya samanzi singabalwa. Ngokufana neemitha zamanzi ze-electromagnetic, xa isantya saziwa, isantya sokuhamba kwevolumu sinokumiselwa ngokuphindaphinda isantya ngendawo enqamlezileyo yombhobho okanye umjelo apho amanzi ahamba khona.
2. Iimpawu Zokusebenza
2.1 Ukuchaneka
2.1.1 Iimitha zamanzi ze-Electromagnetic
Iimitha zamanzi ze-electromagnetic ziyaziwa ngokuchaneka kwazo okuphezulu, ingakumbi kumanqanaba okuhamba kwamanzi aphakathi ukuya kwaphezulu. Zinokufikelela kwinqanaba lokuchaneka ukuya kuthi ga kwi-0.5% okanye nangcono kwiimeko ezifanelekileyo. Olu chaneko luphezulu lubangelwa ngumgaqo wokungeniswa kwamandla kagesi ozinzileyo noqondwa kakuhle. Nangona kunjalo, izinto ezifana notshintsho kumandla e-magnetic field (anokuchaphazeleka yimithombo ye-magnetic yangaphandle), ukungcola kwe-electrode, okanye ukufakwa okungafanelekanga kunokuchaphazela ukuchaneka kwazo. Umzekelo, ukuba ii-electrode zigqunywe ziidiphozithi ngokuhamba kwexesha, i-EMF elinganisiweyo inokugqwethwa, nto leyo ekhokelela ekufundweni kwesantya sokuhamba kwamanzi okungachanekanga.
Iimitha zamanzi ze-ultrasonic nazo zibonelela ngokuchaneka okuhle, ngesiqhelo ukusuka kwi-1% ukuya kwi-2% kwiindlela eziqhelekileyo. Ukuchaneka kwazo kunokuchaphazeleka zizinto ezifana nokubakho kwamaqamza omoya, izinto eziqinileyo ezixhonyiweyo, okanye utshintsho kwiipropati ze-acoustic zamanzi. Amaqamza omoya, umzekelo, anokusasaza amaza e-ultrasonic, nto leyo ebangela ukulinganiswa kwexesha lokubhabha okungachanekanga. Kwiindlela zokusebenza ezinamanzi acocekileyo kunye neemeko zokuhamba okuzinzileyo, iimitha zamanzi ze-ultrasonic zinokubonelela ngokufundwa okuthembekileyo nokuchanekileyo. Kwezinye iimodeli eziphambili, iindlela ezifana nokubona i-ultrasonic ngeendlela ezininzi zisetyenziselwa ukuphucula ukuchaneka ngokulinganisa imilinganiselo kwiindlela ezininzi ze-ultrasonic ngaphakathi kokuhamba kwamanzi.
2.2 Uluhlu lokuhamba kwamanzi
2.2.1 Iimitha zamanzi ze-Electromagnetic
Iimitha zamanzi ze-electromagnetic zihlala zinoluhlu olubanzi lokuhamba kwamanzi, kunye nomlinganiselo oqhelekileyo (umlinganiselo wobuninzi ukuya kwinqanaba lokuhamba elilinganiselweyo elincinci) we-100:1 okanye ngaphezulu. Zifanelekile ukulinganisa zombini izicelo zemizi-mveliso ezihamba ngokukhawuleza, njengakwizityalo ezinkulu zonyango lwamanzi okanye iinkqubo zokupholisa zoshishino, kunye nezicelo zokuhlala kunye nezorhwebo ezihamba ngokukhawuleza. Nangona kunjalo, ukusebenza kwazo kumanqanaba okuhamba kwamanzi aphantsi kakhulu kunokunciphisa kancinci. Kwisantya esiphantsi kakhulu, i-EMF ebangelwayo inokuba buthathaka kakhulu ukuba ingalinganiswa ngokuchanekileyo, nto leyo ekhokelela ekungachaneki okunokwenzeka kwisiphelo esisezantsi soluhlu lokuhamba kwamanzi.
2.2.2 Iimitha zamanzi ze-Ultrasonic
Iimitha zamanzi ze-Ultrasonic zaziwa ngokukwazi kwazo ukulinganisa ukuhamba kwamanzi okuphantsi. Zihlala zikwazi ukubona amazinga okuhamba kwamanzi aphantsi njenge-0.01 m/s okanye angaphantsi, nto leyo eyenza ukuba zifaneleke kakhulu kwizicelo apho ukuvuza okuncinci okanye ukusetyenziswa kwamanzi okuphantsi kufuneka kulinganiswe ngokuchanekileyo, njengakwimitha yamanzi emakhaya ukuze kufunyanwe ukuvuza. Ubungakanani bazo bunokuba phezulu kakhulu, kwaye ezinye iimodeli zifikelela kumlinganiselo we-400:1 okanye ngaphezulu. Olu luhlu olubanzi lokuhamba kwamanzi luzivumela ukuba zikwazi ukusingatha uluhlu olubanzi lwezicelo, ukusuka ekusetyenzisweni kwamanzi amancinci emakhaya ukuya kwiinkqubo zokusasazwa kwamanzi ezinkulu kwimizi-mveliso nakomasipala.
2.3 Ukulahlekelwa luxinzelelo
Iimitha zamanzi ze-electromagnetic zihlala zinelahleko ephantsi yoxinzelelo. Uyilo lwetyhubhu yokuhamba kwamanzi kwiimitha ze-electromagnetic ludla ngokuthe tye kwaye aluphazanyiswa, nto leyo enciphisa ukumelana nokuhamba kwamanzi. Oku kuluncedo kwiindawo apho ukugcina unikezelo lwamanzi olunoxinzelelo oluphezulu kubalulekile, njengakwiinkqubo zoshishino ezinkulu okanye kwiinethiwekhi zokusasaza amanzi kumgama omde. Ukulahleka koxinzelelo oluphantsi kunceda ukunciphisa ukusetyenziswa kwamandla kweempompo nezinye izixhobo zokuhamba kwamanzi, njengoko kufuneka amandla amancinci ukuze koyiswe ukumelana kwimitha.
2.3.2 Iimitha zamanzi ze-Ultrasonic
Iimitha zamanzi ze-ultrasonic nazo ngokubanzi zibonisa ukulahleka koxinzelelo oluphantsi. Inkqubo yokulinganisa kwiimitha ze-ultrasonic ayibandakanyi naluphi na uthintelo olubonakalayo ngaphakathi kwendlela yokuhamba, njengoko ii-sensors ze-ultrasonic zihlala zifakelwa ngaphandle kombhobho okanye umjelo wokuhamba. Le ndlela yokulinganisa engangeneleliyo iqinisekisa ukuba ukuhamba kwamanzi akuthintelwa kakhulu, nto leyo ebangela ukwehla koxinzelelo oluncinci kwimitha. Njengeemitha ze-electromagnetic, olu phawu lwenza iimitha zamanzi ze-ultrasonic zilungele ukusetyenziswa apho ukugcinwa koxinzelelo kubalulekile.
2.4 Ixesha Lokuphendula
2.4.1 Iimitha zamanzi ze-Electromagnetic
Iimitha zamanzi ze-electromagnetic zinexesha lokuphendula ngokukhawuleza. Xa kukho utshintsho kwisantya sokuhamba kwamanzi, i-EMF ebangelwayo itshintsha phantse ngoko nangoko, kwaye imitha inokuyibona ngokukhawuleza kwaye ibhalise olu tshintsho. Eli xesha lokuphendula ngokukhawuleza liyenza ifaneleke kwizicelo apho kufuneka kujongwe utshintsho lwesantya sokuhamba kwamanzi ngexesha langempela, njengakwiinkqubo zoshishino apho utshintsho olukhawulezileyo kwimfuno yamanzi kufuneka lufunyanwe kwaye lulawulwe ngokukhawuleza.
2.4.2 Iimitha zamanzi ze-Ultrasonic
Iimitha zamanzi ze-ultrasonic nazo zibonelela ngexesha lokuphendula ngokukhawuleza. Ukulinganiswa kwexesha lokubhabha kwamaza e-ultrasound yinkqubo ekhawulezayo, kwaye naluphi na utshintsho kwisantya sokuhamba kwamanzi lubonakala ngokukhawuleza kumahluko wexesha elilinganisiweyo. Oku kuvumela ukubonwa ngokukhawuleza kokuguquguquka kwesantya sokuhamba, okuluncedo kwizicelo ezinje ngokujonga inethiwekhi yokusasazwa kwamanzi, apho utshintsho olukhawulezileyo kwiipateni zokusetyenziswa kwamanzi lunokuchongwa ngokukhawuleza.
3. Izinto eziqwalaselwayo malunga nokusingqongileyo kunye nokufakelwa
3.1 Iimfuneko zoFakelo
3.1.1 Iimitha zamanzi ze-Electromagnetic
Iimitha zamanzi ze-electromagnetic zifuna ubungakanani obuthile bobude bepayipi ethe tye ukusuka phezulu ukuya ezantsi kwindawo yokufaka imitha. Oku kwenzelwa ukuqinisekisa ukuba ukuhamba kwamanzi kuphuhlisiwe ngokupheleleyo kwaye kuyafana ngaphambi kokuba kungene kwimitha, nto leyo ebalulekileyo ekulinganisweni ngokuchanekileyo. Ngokwesiqhelo, ubude bepayipi ethe tye ukusuka phezulu ukuya phezulu obuphindwe ka-5 ukuya kwi-10 ububanzi bepayipi kunye nobude bepayipi ethe tye ukusuka phantsi ukuya ezantsi obuphindwe ka-2 ukuya ku-5 ububanzi bepayipi kuyacetyiswa. Ukongeza, iimitha zamanzi ze-electromagnetic kufuneka zifakwe kwindawo apho kungekho kuphazamiseka okukhulu kwemagnethi yangaphandle, njengoko oku kunokuphazamisa intsimi yemagnethi ngaphakathi kwemitha kwaye kuchaphazele ukuchaneka kokulinganisa.
3.1.2 Iimitha zamanzi ze-Ultrasonic
Iimitha zamanzi ze-ultrasonic ziguquguquka ngakumbi ngokweemfuno zokufakela. Ngokubanzi zifuna ubude bepayipi obungathanga ngqo kangako xa kuthelekiswa neemitha ze-electromagnetic. Kwezinye iimeko, ubude bepayipi ethe tye enyukayo obuphindwe kathathu ubukhulu bepayipi okanye ngaphantsi bunokwanela. Oku kwenza kube lula ukuzifaka kwiinkqubo zepayipi ezikhoyo apho indawo yokusebenzisa iipayipi ezithe tye inokunqongophala. Nangona kunjalo, iimitha zamanzi ze-ultrasonic kufuneka zifakwe kwindawo apho udonga lwepayipi lugudileyo kwaye lungenamhlwa okanye ukwakheka kwesikali, njengoko oku kunokuchaphazela ukuhanjiswa kunye nokwamkelwa kwamaza e-ultrasound.
3.2 Ubuthathaka kwiNdalo
3.2.1 Iimitha zamanzi ze-Electromagnetic
Iimitha zamanzi ze-electromagnetic ziyayiqonda indlela amanzi ahamba ngayo ngombane. Zenzelwe ukulinganisa ukuhamba kwamanzi aqhuba umbane, kwaye ukuba amanzi anombane ophantsi kakhulu (njengakwimeko yamanzi acocekileyo kakhulu), i-EMF ebangelwayo inokuba buthathaka kakhulu ukuba ingalinganiswa ngokuchanekileyo. Ukongeza, njengoko bekutshiwo ngaphambili, amasimi emagnethi angaphandle anokuphazamisana nokusebenza kweemitha zamanzi ze-electromagnetic. Kwiindawo zoshishino ezineemoto ezinkulu zombane, ii-transformers, okanye ezinye imithombo yamasimi emagnethi aqinileyo, ukhuselo olukhethekileyo okanye indawo efanelekileyo yemitha kunokufuneka ukuqinisekisa umlinganiselo ochanekileyo.
3.2.2 Iimitha zamanzi ze-Ultrasonic
Iimitha zamanzi ze-ultrasonic zinovelwano xa kukho amaqamza omoya, izinto eziqinileyo ezixhonyiweyo, kunye notshintsho kwiimpawu ze-acoustic zamanzi. Amaqamza omoya anokusasaza amaza e-ultrasound, nto leyo ekhokelela ekulinganisweni kwexesha lokubhabha okungachanekanga. Izinto eziqinileyo ezixhonyiweyo, ingakumbi ukuba zikhulu okanye zikwizinga eliphezulu, zinokuchaphazela nokwanda kwamaza e-ultrasound. Ngaphezu koko, utshintsho kubushushu, ityuwa, okanye i-viscosity yamanzi lunokutshintsha iimpawu zawo ze-acoustic, nto leyo enokufuna uhlengahlengiso lokulinganisa kwezinye iimeko ukuze kugcinwe umlinganiselo ochanekileyo.
4. Iingqwalasela zeendleko
4.1 Ixabiso lokuqala
Iimitha zamanzi ze-electromagnetic ngokubanzi zinexabiso eliphezulu lokuqala. Oku kungenxa yenkqubo yokuvelisa enzima ebandakanyeka ekudalweni kwe-magnetic field - izinto ezivelisayo, ii-electrodes ezenziwe ngokuchanekileyo, kunye ne-elektroniki ephucukileyo efunekayo ukulinganisa i-EMF ebangelwayo. Izixhobo ezisetyenziswa ekwakhiweni kwazo, ngakumbi ezo zesekethe ye-magnetic kunye ne-flow tube lining (ukuqinisekisa ukufakelwa kombane), nazo zinegalelo kwixabiso eliphezulu.
4.1.2 Iimitha zamanzi ze-Ultrasonic
Iimitha zamanzi ze-ultrasonic nazo zinexabiso eliphezulu lokuqala, nangona ngamanye amaxesha zinokuba ngaphantsi kancinci kuneemitha ze-electromagnetic, kuxhomekeke kwimodeli ethile kunye nomenzi. Ixabiso liqhutywa ikakhulu zii-transducers ze-ultrasonic ezikumgangatho ophezulu, ii-elektroniki zokucubungula isignali eziphambili, kunye nesidingo sokulinganisa ngokuchanekileyo ngexesha lokwenziwa. Nangona kunjalo, njengoko ubuchwepheshe bukhula kwaye uqoqosho lobukhulu luqala ukusebenza, ixabiso leemitha zamanzi ze-ultrasonic liye lehla kancinci.
4.2 Iindleko Zokulungisa
4.2.1 Iimitha zamanzi ze-Electromagnetic
Iindleko zokugcina amanzi emitha yombane ziphakathi kakhulu. Imisebenzi ephambili yokugcina ibandakanya ukuhlolwa rhoqo kunye nokucoca ii-electrodes ukuthintela ukungcola, okunokuchaphazela ukuchaneka kokulinganisa. Kwezinye iimeko, ukuba izixhobo ezivelisa intsimi yombane zibonisa iimpawu zokuguguleka okanye ukuba kukho iingxaki nge-elektroniki, ukugcinwa okunzulu okanye ukutshintshwa kwezixhobo kunokufuneka. Nangona kunjalo, ekubeni kungekho zixhobo zishukumayo kwicandelo lokulinganisa, iimfuno zokugcinwa zizonke azinzima kakhulu.
Iimitha zamanzi ze-ultrasonic zihlala zineendleko eziphantsi zokulungisa. Ekubeni kungekho zinto zishukumayo kwaye ii-transducer ze-ultrasonic zihlala ixesha elide, umsebenzi ophambili wokulungisa kukujonga rhoqo naziphi na iimpawu zomonakalo kwii-transducer okanye kwi-electronics yokucubungula isignali. Kwizicelo apho amanzi anenani elikhulu lezinto eziqinileyo ezixhonyiweyo okanye apho kukho umngcipheko wokungcola kwe-transducer, ukucocwa ngamanye amaxesha kwemiphezulu ye-transducer kunokufuneka. Kodwa ngokubanzi, xa kuthelekiswa nezinye iintlobo zeemitha zamanzi, iimitha zamanzi ze-ultrasonic azidingi ukulungiswa rhoqo kwaye azibizi kakhulu.
5. Izicelo
5.1 Iimitha zamanzi ze-Electromagnetic
Iimitha zamanzi ze-electromagnetic zisetyenziswa kakhulu kwizicelo zoshishino apho ukulinganisa ngokuchanekileyo amazinga aphezulu okuhamba kwamanzi aqhubayo kubalulekile. Oku kubandakanya amashishini afana nokuvelisa iikhemikhali, ukuvelisa umbane (ukulinganisa amanzi apholisayo), kunye nokuveliswa kokutya neziselo. Kumacandelo okunyanga amanzi amdaka, iimitha zamanzi ze-electromagnetic zisetyenziselwa ukulinganisa ukuhamba kwamanzi aluhlaza, amanzi acociweyo, kunye namanzi amdaka. Zikwasetyenziswa kakhulu kwizakhiwo zorhwebo ezinkulu nakwiindawo zokuhlala ukuze kuhlawulwe ngokuchanekileyo ukusetyenziswa kwamanzi.
Iimitha zamanzi ze-ultrasonic zifumana ukusetyenziswa okubanzi ekulinganiseni amanzi asekhaya, ingakumbi apho kugxilwe khona ekulinganiseni ngokuchanekileyo amazinga okuhamba kwamanzi aphantsi kunye nokufunyanwa kokuvuza. Zikwasetyenziswa kwiinkqubo zokunkcenkceshela kwezolimo, apho amanzi anokuba nokungcola okufana nesanti kunye ne-silt, kwaye indlela yokulinganisa engangeneleliyo yeemitha ze-ultrasonic inceda ukuthintela imiba enxulumene nokuvaleka okanye umonakalo ovela kobu kungcola. Ukongeza, iimitha zamanzi ze-ultrasonic zifanelekile ukusetyenziswa kwiinethiwekhi zokusasaza amanzi ukujonga ukuhamba kwamanzi kwiindawo ezahlukeneyo, kuquka neendawo ezineemibhobho ezinzima apho iimfuno zokufakelwa eziguquguqukayo zeemitha ze-ultrasonic ziluncedo.
Ukuqukumbela, zombini iimitha zamanzi ze-electromagnetic kunye ne-ultrasonic zibonelela ngeenzuzo ezikhethekileyo kwaye zineendawo zazo zokusetyenziswa. Ukukhetha phakathi kwezi zimbini kuxhomekeke kwizinto ezahlukeneyo ezifana neemfuno ezithile zokusetyenziswa, iimpawu zamanzi alinganiswayo, imeko yokufakelwa, kunye nokuqwalaselwa kweendleko kunye neenzuzo. Ngokuvavanya ngononophelo olu mahluko, abasebenzisi banokukhetha itekhnoloji yokulinganisa amanzi efanelekileyo ukuhlangabezana neemfuno zabo zamanzi achanekileyo, athembekileyo, kunye namaxabiso aphantsi.umlinganiselo.
Ixesha leposi: Juni-05-2025