Yimaphi amaphuzu adinga ukunakwa lapho kufakwa i-clamp-on ultrasonic flowmeter?

Uma ufaka i-flowmeter ye-ultrasonic ebambayo, kufanele unake izici eziningi ezifana nezimo zamapayipi, indawo yokufaka inzwa, kanye nezici zemvelo ukuqinisekisa ukunemba kokulinganisa kanye nokuqina kwemishini. Nazi izinyathelo zokuphepha ezithile:

I. Ukuhlolwa Kwezimo Eziyisisekelo Zepayipi

1. Izinto Zokuphayiphika Nobukhulu Bodonga
   • Izinzwa ze-Clamp-on zithembele kumaza e-ultrasonic angena epayipini ukuze asakazeke. Ngakho-ke, ipayipi kumele lenziwe ngezinto ezingezona ezensimbi (njenge-PVC, i-PE) noma izinto zensimbi ezinodonga oluncane (njengensimbi engagqwali, insimbi yekhabhoni, enobukhulu bodonga obuvame ukunconywa ukuthi bube ngu-≤ 10mm).
   • Uma udonga lwangaphakathi lombhobho lunesendlalelo sokulwa nokugqwala, ukukala, noma ulwelwesi (njengesimende, ulwelwesi lwerabha), kuyadingeka ukuqinisekisa ukuthi ukujiya kwalo kuyafana futhi akuthinti ukudluliswa kwamagagasi omsindo; ngaphandle kwalokho, kungase kwenzeke amaphutha okulinganisa.
2. Ububanzi bephayiphi kanye nobubanzi bejubane lokugeleza
   • Qinisekisa ukuthi ububanzi bokulinganisa be-flowmeter buhambisana nobubanzi bepayipi kanye nejubane langempela lokugeleza (ngokuvamile, izinhlobo ze-clamp-on zifanelekela amapayipi ane-DN15~DN6000, futhi ijubane lokugeleza livame ukunconywa ukuthi libe ngu-0.3~12m/s).
   • Ijubane lokugeleza eliphansi kakhulu (<0.3m/s) lingabangela izimpawu ezibuthakathaka, kanti ijubane lokugeleza eliphakeme kakhulu (>12m/s) lingathinta ukuzinza kokulinganisa ngenxa yokuphazamiseka.
3. Isimo Esimaphakathi Ephayiphini
   • I-medium kumele ibe uketshezi lwesigaba esisodwa (uketshezi olungenawo amabhamuza amaningi, izinhlayiya ezilengayo, noma ukungcola). Ngaphandle kwalokho, amabhamuza noma izinhlayiya zizobonakalisa/zihlakaze amaza omsindo, okuholela ekulahlekelweni kwesignali noma amaphutha.
   • Gwema ukuhlukaniswa, ama-vortice, noma ukuxokozela okukhulu kwe-medium epayipini (njengama-valve aseduze namaphampu), futhi uqinisekise ukuthi ingxenye yokulinganisa iwukugeleza okuzinzile kwepayipi eligcwele.

II. Ukukhethwa Kwesikhundla Sokufakwa Kwezinzwa

1. Izidingo Zesigaba Sepayipi Eliqondile
   • Ukuqinisekisa amaphethini okugeleza koketshezi okuzinzile, indawo yokufaka inzwa kumele ihlangabezane nezidingo zobude bezingxenye zamapayipi aqondile ngaphambi nangemva:
     • Phezulu (uhlangothi olukude nenzwa): Uma kunezindololwane, amavalvu, amaphampu, noma ezinye izingxenye zokumelana ngaphambili, kufanele kube ≥ izikhathi eziyi-10 ububanzi bombhobho (10D); uma kungekho izingxenye eziyinkimbinkimbi, kufanele kube ≥ 5D.
     • Phansi komfula (uhlangothi oluseduze nenzwa): ≥ 5D (uma kunezingxenye zokumelana ezansi komfula, kunconywa ukuthi kube ≥ 3D).
   • Gwema ukufaka endaweni ephakeme kakhulu yepayipi (lapho umoya ungaqongelela khona) noma endaweni ephansi kakhulu (lapho i-slag ingaqongelela khona).
2. Isiqondiso Sokufakwa kanye Nesikhala
   • Ngokwezinto zombhobho kanye nobubanzi, khetha indlela ye-V (amaza omsindo adlula ngendlela eqondile empayipini, afanele ububanzi obuncane nobuphakathi) noma indlela ye-Z (amaza omsindo adlula ngqo empayipini, afanele ububanzi obukhulu noma amapayipi anodonga olujiyile).
   • Izinzwa ezimbili (ukuphela kokudlulisa kanye nokuphela kokwamukela) kumele zifakwe ngokulinganayo kuzo zombili izinhlangothi zepayipi ukuqinisekisa ukuthi indlela yamagagasi omsindo ihambisana ne-axis yepayipi, futhi isikhala sihambisana nefomula yokubala encwadini ye-flowmeter (ngokuvamile ehlobene nobubanzi bepayipi kanye ne-angle yokugqama kwamagagasi omsindo).
3. Gwema Imithombo Yokuphazamisa
   • Gcina kude nemithombo enamandla yokuphazamiseka kwe-electromagnetic (njengezinjini, ama-transformer, ama-frequency converter) ukuze uvimbele amasignali kagesi ukuthi angaphazamisi ukudluliswa kwe-ultrasonic.
   • Gcina kude nemithombo yokudlidliza (njengezimpompi, ama-compressor). Uma kudingeka, faka ama-pads abambe ukushaqeka ukuze uvimbele ukufakwa kahle kwezinzwa ngenxa yokudlidliza kwepayipi.

III. Imininingwane Yokusebenza Kokufakwa Kwezinzwa

1. Ukwelashwa Komphezulu Wephayiphi
   • Ngaphambi kokufaka, hlanza ubuso bombhobho ukuze ususe ukugqwala, upende, uwoyela, noma izendlalelo ze-oxide ukuqinisekisa ukuthi inzwa iseduze nepayipi (uma kudingeka, gcoba kuze kube nombala wensimbi; amapayipi angewona awensimbi adinga ukususa ukungcola kombhobho).
   • Uma ubuso bombhobho bungalingani, sebenzisa i-coupling agent ekhethekile (njenge-silica gel, i-glycerin) ukuze ugcwalise izikhala futhi ukhiphe umoya (umoya uzonciphisa kakhulu amaza omsindo). I-coupling agent kumele ihambisane ne-medium (hhayi ukulimaza umbhobho).
2. Indlela Yokulungisa Izinzwa
   • Sebenzisa into ekhethekile ukuze uqinise inzwa epayipini ukuze ugweme ukukhululeka (ukukhululeka kuzobangela ukungazinzile kwesiginali), kodwa qaphela amandla okuvimbela ukuguquguquka kwepayipi noma umonakalo wenzwa.
   • Kumapayipi aguquguquka kalula njengalawo epulasitiki, amandla okufakwa kufanele abe maphakathi ukuze kugwenywe ukuthi ipayipi licindezelwe libe yingxenyana futhi kuthinte iphethini yokugeleza.
3. Ukuxhumeka Nokuvikelwa Kwekhebula
   • Izintambo zezinzwa kumele zigcinwe kude nezintambo ze-voltage ephezulu ukuze kugwenywe ukuphazamiseka kwesignali, futhi ubude bekhebula kumele buhlangabezane nezidingo ezikubhukwana (izintambo ezinde kakhulu zingabangela ukuncishiswa kwesignali).
   • Ukuze kufakwe ngaphandle, kuyadingeka ukuvikela izintambo (njengokufaka amalunga angangeni manzi) futhi uzivikele elangeni ukuze ugweme ukuguga kwezintambo.

IV. Ukuzivumelanisa Nemvelo Nesimo Sokusebenza

1. Izinga Lokushisa Eliphakathi Nomswakama
   • Izinga lokushisa elisebenzayo lenzwa kumele libe ngaphakathi kwebanga elivumelekile lemishini (ngokuvamile -30℃ ~ +60℃). Gwema ukuchayeka isikhathi eside emazingeni okushisa aphezulu kakhulu, amazinga okushisa aphansi, noma ezindaweni ezinomswakama ophezulu (faka amadivayisi okuvikela ukushisa noma okuvikela ilanga uma kudingeka).
   • Uma izinga lokushisa lendawo yokuhambisa ipayipi liphezulu kakhulu (njenge->100℃), qinisekisa ukumelana nokushisa okuphezulu kwenzwa ukuze ugweme ukwehluleka kwe-coupling agent noma umonakalo kunzwa ngenxa yokushisa okuphezulu.
2. Izidingo Zokuvikela Nokuqinisekisa Ukuqhuma
   • Uma ufaka ezindaweni ezivuthayo neziqhumayo (njengezindawo zokusebenzela zamakhemikhali), khetha izinzwa ezingaqhumi ezihlangabezana nezidingo zezinga ezingaqhumi endaweni.
   • Ezindaweni ezingaphandle noma ezinomswakama, qiniseka ukuthi izinga lokuvikela imishini lingu-≥ IP65 ukuvimbela ukungena kwamanzi emvula nothuli.

V. Ukufaka Imishini Nokuqinisekisa Ngemva Kokufakwa

1. Ukutholwa Kwamandla Esiginali
   • Ngemva kokufaka, hlola amandla esignali nge-flowmeter host (ngokuvamile ivezwa njengephesenti noma i-decibel). Qinisekisa ukuthi isignali izinzile (kunconywa ≥ 60%). Uma isignali ibuthakathaka, lungisa indawo yesensa noma i-coupling agent.
   • Bheka ukuthi ukugeleza okusheshayo kanye nokugeleza okuqongelelekayo kuyahambisana yini nezimo zokusebenza zangempela (ukuqinisekiswa kungenziwa ngokuqhathanisa namanani okugeleza aziwayo noma amanani okuhlola).
2. Ukuhlolwa Kokuzinza Kwesikhathi Eside
   • Hlola njalo ukulungiswa kwenzwa kanye nesimo se-coupling agent (kungakhathaliseki ukuthi yomile noma ihlukanisiwe), ikakhulukazi ezimweni lapho kunokudlidliza okukhulu noma izinguquko zokushisa.