Ukubeka isiseko esifanelekileyo yinxalenye ebalulekileyo yofakelo lwemitha yokuhamba kwe-electromagnetic. Ekubeni imitha yokuhamba kwe-electromagnetic ilinganisa isignali yombane encinci kakhulu eveliswa kukuhamba kolwelo oluqhubayo ngokusebenzisa intsimi yemagnethi, ukuphazamiseka kombane wangaphandle okanye amandla okubhekisa angaguqukiyo anokuchaphazela uzinzo lokulinganisa.
Iiringi zokumisa umhlaba kunye nee-electrode zokumisa umhlaba zisetyenziselwa ukuqinisekisa ukuba ulwelo, umzimba wesenzi, kunye nombhobho zikwimeko efanayo yombane, zibonelela ngesalathiso sokulinganisa esizinzileyo kunye nokunciphisa ingxolo yesiginali.
Kutheni Kufuneka Umhlaba Kwimitha Yokuhamba Kwe-Electromagnetic?
Imitha yokuhamba kwe-electromagnetic isebenza ngokusekelwe kuMthetho kaFaraday wokungenisa i-Electromagnetic. Ngexesha lokulinganisa, isignali ye-voltage eveliswa phakathi kwee-electrodes idla ngokuba ncinci kakhulu, ngesiqhelo iba zii-millivolts ezimbalwa kuphela.
Ngenxa yokuba isignali yokulinganisa ibuthathaka kakhulu, iimitha zokuhamba kwe-electromagnetic zinokuchaphazeleka yile:
* Imisinga yombane elahlekileyo kwipayipi
* Ingxolo yombane evela kwiimoto okanye kwii-frequency converters
* Iimeko ezimbi zokumisa umhlaba
* Izixhobo zepayipi ezingaqhubiyo
* Iinkqubo zokukhusela i-Cathodic
Ngaphandle kokubekwa komhlaba ngokufanelekileyo, isignali yokuhamba kwamanzi isenokungazinzi, nto leyo enokubangela:
* Ukuguquguquka komboniso wokuhamba
* Inqaku elingelona zero elingalunganga
* Iimpazamo zokulinganisa
* Imiqondiso yemveliso engaqinisekanga
Ngoko ke, inkqubo yokumisa umhlaba ethembekileyo ibalulekile ukuze kusebenze ngokuchanekileyo nangokuzinzileyo.
Zifanele Zifakwe Phi IiRings Zokumisa Ingca?
Iiringi zokumisa umhlaba zihlala zifakelwa phakathi kweflange yemitha yokuhamba kunye neflange yombhobho.
Isangqa sokumisa umhlaba kufuneka sibekwe ngendlela yokuba sidibane ngqo nolwelo oluqhuba umoya kwaye siqhagamshelwe ngombane kwisiphelo sokumisa umhlaba semitha yokuhamba kwamanzi.
Inkqubo yokufakela eqhelekileyo yile:
1. Beka iringi yokumisa umhlaba phakathi kweflange yenzwa kunye neflange yombhobho.
2. Qinisekisa ukuba i-gasket yokutywina ayigubungeli umphezulu weringi yokumisa odibana nolwelo.
3. Qhagamshela iringi yokumisa umhlaba kwisiphelo sokumisa umhlaba kwimitha yokuhamba kwe-electromagnetic usebenzisa ucingo lokumisa umhlaba.
4. Qhagamshela inkqubo kwindawo ethembekileyo yokumisa umhlaba.
Zifuneka nini iiRings zokuGrounda?
Iiringi zokumisa umhlaba zicetyiswa ngokukodwa kwiimeko ezilandelayo:
1. Iipayipi Ezingaqhubiyo
Ukuba umbhobho wenziwe ngezinto ezifana nezi:
* I-PVC
* I-PP
* Umbhobho ofakwe nge-PTFE
* Umbhobho ogqunywe ngerabha
* Iplastiki eqinisiweyo yefiberglass (FRP)
umbhobho ngokwawo awunakubonelela ngonxibelelwano lombane oluthembekileyo.
Kwezi meko, iiringi zokumisa umhlaba ziyafuneka ukuze kusekwe ireferensi yombane ezinzileyo phakathi kolwelo kunye nemitha yokuhamba kwamanzi.
2. Usetyenziso lweMibhobho yePlastiki
Iipayipi zeplastiki zisetyenziswa kakhulu ekucoceni amanzi, ekusetyenzweni kweekhemikhali, nasekusetyenzisweni kwemizi-mveliso.
Ngenxa yokuba izinto zeplastiki zizithinteli zombane, ulwelo olungaphakathi kumbhobho lunokwahlulwa ngombane kwisensor. Ukufaka iiringi zokumisa umhlaba kunceda ekupheliseni le ngxaki.
3. Izicelo ezinokuphazamiseka kombane
Kwiindawo zoshishino ezine:
* Iimoto ezinkulu
* Iimpompo
* Iidrives zefrequency eziguquguqukayo (VFD)
* Izixhobo zokuwelda
Izangqa zokumisa umhlaba zinokunceda ekunciphiseni ukuphazamiseka kombane kwaye ziphucule uzinzo lokulinganisa.
Zifanele Zifakwe Phi Ii-Electrode Zokumisa Ihlabathi?
Ii-electrode zokumisa umhlaba zihlala zifakelwa ngqo kwi-electromagnetic flow meter sensor body.
Zenzelwe ukubonelela ngereferensi yombane ezinzileyo phakathi kolwelo kunye nesensor.
Ngokuxhomekeke kuyilo lwemitha yokuhamba kwamanzi, ii-electrode zokumisa umhlaba zinokuba zezi:
* Yakhelwe ngaphakathi komzimba wesenzi.
* Ifakwe njengezixhobo zokumisa umhlaba ezahlukeneyo.
* Idityaniswe nee-electrode ezibhekisayo.
Ii-electrode zokumisa umhlaba kufuneka zibekwe kwindawo edibene nolwelo lwenkqubo kwaye ziqhagamshelwe ngaphakathi okanye ngaphandle ngokwendlela yoyilo lomenzi.
Umahluko phakathi kweeRings zokuGrounding kunye neeElectrodes zokuGrounding
Iiringi zokumisa umhlaba kunye nee-electrode zokumisa umhlaba zisebenza ngeenjongo ezifanayo kodwa zisetyenziswa kwiimeko ezahlukeneyo.
Ii-electrode ezisezantsi zihlala ziyinxalenye ye-sensor ye-flow meter kwaye zibonelela nge-reference potential ngqo evela kulwelo.
Iiringi zokumisa umhlaba zizixhobo ezongezelelweyo ezifakelwe phakathi kwemitha yokuhamba kwamanzi kunye nombhobho, ezisetyenziswa kakhulu xa umbhobho ungakwazi ukubonelela ngesiseko esifanelekileyo.
Kwiinkqubo ezininzi zemibhobho yesinyithi eqhelekileyo, ii-electrode zokumisa umhlaba zisenokuba zanele. Nangona kunjalo, kwiipayipi zeplastiki okanye iipayipi ezifakwe imibhobho, iiringi zokumisa umhlaba zihlala zicetyiswa.
Iingcebiso zokufakelwa komhlaba
Ukuze ufezekise ukusebenza okuthembekileyo kokulinganisa, landela le migaqo:
1. Sebenzisa uQhagamshelo oluZinikezele kwiGrounding
Isixhobo sokulinganisa amanzi kufuneka siqhagamshelwe kumhlaba othembekileyo womhlaba kusetyenziswa intambo yokumisa umhlaba efanelekileyo.
Musa ukuthembela kwi:
* Iinkxaso zepayipi
* Iiflanges zodwa
* Izakhiwo zesinyithi ezikufutshane
njengendlela yokumisa umhlaba.
2. Gcina Ukumelana Nomhlaba Kuphantsi
Uqhagamshelo lomhlaba kufuneka lube nombane ophantsi ukuze lubonelele ngesakhono sokubhekisa esizinzileyo.
Ukungagalelwa kakuhle komhlaba kunokubangela:
* Ukuguquguquka kwesignali
* Ukungazinzi kwemveliso
* Ukuphazamiseka konxibelelwano
3. Kuphephe ukwabelana ngezixhobo ezinamandla aphezulu xa ubeka umhlaba phantsi
Inkqubo yokumisa umhlaba yemitha yokuhamba kufuneka iphephe ukwabelana ngendawo efanayo yokumisa umhlaba nezixhobo ezivelisa ingxolo yombane, ezinje:
* Iimoto
* Ii-Inverters
* Oomatshini bokuwelda
Indawo eyahlukileyo yokumisa umhlaba ikhethwa kwiindawo zoshishino.
⸻
4. Nika ingqalelo kwiipayipi ezikhuselweyo ngeCathodically
Eminye imibhobho isebenzisa iinkqubo zokukhusela i-cathodic ukuthintela ukugqwala.
Kwezi zicelo, uqhagamshelo oluthe ngqo olusekelwe phantsi komhlaba lunokudala iindlela zangoku ezingafunekiyo kwaye luchaphazele ukuchaneka kokulinganisa.
Kunokufuneka iindlela ezikhethekileyo zokufakela, ezinje ngokuzahlula ngombane phakathi kwemitha yokuhamba kwamanzi kunye nenkqubo yokumisa ipayipi.
Ukusikwa kwezixhobo ezahlukeneyo zemibhobho
Kwimibhobho yesinyithi:
* Umbhobho udla ngokubonelela ngokuqhubekeka kakuhle kombane.
* Ii-electrode zokumisa umhlaba zinganela ukuba umbhobho usekwe kakuhle.
Kwimibhobho yeplastiki:
* Iiringi zokumisa umhlaba ziyacetyiswa kakhulu.
* Imitha yokuhamba kwamanzi ayinakuxhomekeka kumbhobho ukuze ibhekisele kumbane.
Kwimibhobho eneentambo:
* Jonga ukuba izinto ezikwi-lining ziyagquma ubushushu ngombane na.
* Sebenzisa izangqa zokumisa umhlaba ukuba ulwelo lukhutshiwe ngombane kumbhobho.
Iingxaki Eziqhelekileyo Nezisombululo
Ingxaki: Isignali yokuhamba iyatshintshatshintsha emva kokufakwa
Izizathu ezinokwenzeka:
* Uqhagamshelo olubi lwesiseko
* Ukuphazamiseka kombane
* Akukho zindandatho zokumisa ezifakwe kwiipayipi zokukhusela
Isisombululo:
* Jonga ukumelana nokuma komhlaba.
* Qinisekisa uqhagamshelo lwentambo yokumisa umhlaba.
* Faka izangqa zokumisa umhlaba ukuba kuyimfuneko.
Ingxaki: Imitha yokulinganisa ukuhamba kwamanzi isebenza ngokuqhelekileyo kumzi-mveliso kodwa ayizinzanga kwindawo yokusebenza
Izizathu ezinokwenzeka:
* Iimeko ezahlukeneyo zokumisa umhlaba kwindawo.
* Ukuphazamiseka okuvela kwiimpompo okanye kwii-frequency converters.
* Indlela engachanekanga yokumisa umhlaba.
Isisombululo:
* Phucula uqhagamshelo lwesiseko.
* Faka indawo yokumisa umhlaba ekhethekileyo.
* Yahlula imitha yokuhamba kwamanzi kwizixhobo zombane ezinengxolo.
Iiringi zokumisa umhlaba kunye nee-electrode zokumisa umhlaba zidlala indima ebalulekileyo ekuqinisekiseni ukulinganiswa kokuhamba kombane ngokuchanekileyo nangokuzinzileyo.
Ii-electrode zokumisa umhlaba zihlala zifakelwa kwi-sensor ye-flow meter ukuze zibonelele nge-reference potential ngqo evela kulwelo. Iiringi zokumisa umhlaba zifakelwa phakathi kwe-flow meter flange kunye ne-pipeline flange, ingakumbi xa kusetyenziswa iipayipi ezingahambisi moya okanye xa kufuneka ukhuseleko olongezelelweyo lokumisa umhlaba.
Ukubeka umhlaba ngokuchanekileyo kunceda ekunciphiseni ukuphazamiseka kombane, ukuzinzisa imiqondiso yokulinganisa, kunye nokuqinisekisa ukusebenza okuthembekileyo kwexesha elide kweemitha zokuhamba kwe-electromagnetic.
Ixesha leposi: Julayi-27-2026