Ngawaphi amanqaku afuna ingqalelo xa kufakwa i-clamp-on ultrasonic flowmeter?

Xa kufakwa i-clamp-on ultrasonic flowmeter, kufuneka kuqwalaselwe izinto ezininzi ezifana neemeko zombhobho, indawo yokufakwa kwe-sensor, kunye nezinto ezingqongileyo ukuqinisekisa ukuchaneka komlinganiselo kunye nozinzo lwezixhobo. Nazi izilumkiso ezithile:

I. Ukuhlolwa kweMiqathango yeMibhobho eSisiseko

1. Izinto zePhayiphi kunye noBungqingqwa bodonga
   • Izinzwa ze-Clamp-on zixhomekeke kumaza e-ultrasonic angena kumbhobho ukuze asasazeke. Ke ngoko, umbhobho kufuneka wenziwe ngezinto ezingezizo ezesinyithi (ezifana ne-PVC, i-PE) okanye izinto zesinyithi ezibhityileyo (ezifana nentsimbi engatyiwayo, intsimbi yekhabhoni, ezinobukhulu bodonga obucetyiswayo ukuba bube yi-≤ 10mm).
   • Ukuba udonga lwangaphakathi lombhobho lune-layer yokulwa nokugqwala, isikali, okanye i-lining (njengesamente, i-lining yerabha), kuyimfuneko ukuqinisekisa ukuba ubukhulu bayo buyafana kwaye abuchaphazeli ukuhanjiswa kwamaza esandi; kungenjalo, iimpazamo zokulinganisa zinokwenzeka.
2. Ububanzi bePhayiphi kunye noLuhlu lweVelocity Flow
   • Qinisekisa ukuba uluhlu lokulinganisa lwe-flowmeter luhambelana nobubanzi bombhobho kunye nesantya sokuhamba kombane (ngokubanzi, iintlobo ze-clamp-on zifanelekile kwiipayipi ezine-DN15~DN6000, kwaye isantya sokuhamba kombane sidla ngokucetyiswa ukuba sibe yi-0.3~12m/s).
   • Isantya sokuhamba esiphantsi kakhulu (<0.3m/s) sinokubangela imiqondiso ebuthathaka, kwaye isantya sokuhamba esiphakamileyo kakhulu (>12m/s) sinokuchaphazela uzinzo lokulinganisa ngenxa yokuxinana.
3. Imeko Ephakathi Kwipayipi
   • Isixhobo kufuneka sibe lulwelo lwesigaba esinye (ulwelo olungenamaqamza amaninzi, amaqhekeza axhonyiweyo, okanye ukungcola). Ngaphandle koko, amaqamza okanye amaqhekeza aya kubonakalisa/asasaze amaza esandi, nto leyo ekhokelela ekulahlekeni kwesignali okanye kwiimpazamo.
   • Kuphephe ukwahlulwahlulwa, ii-vortices, okanye ukuxinana okukhulu kwesixhobo esikwipayipi (ezifana neevalvu ezikufutshane neepompo), kwaye uqinisekise ukuba icandelo lokulinganisa lihamba kakuhle ngepayipi epheleleyo.

II. Ukukhethwa kweNdawo yoFakelo lweSensor

1. Iimfuneko zeCandelo leMibhobho eQondileyo
   • Ukuqinisekisa ukuba iipateni zokuhamba kolwelo zizinzile, indawo yokufaka inzwa kufuneka ihlangabezane neemfuno zobude beenxalenye zepayipi ezithe tye ngaphambi nasemva:
     • Phezulu (icala elikude nesensor): Ukuba kukho iingqiniba, iivalvu, iimpompo, okanye ezinye izinto zokuxhathisa ngaphambili, kufuneka ibe ≥ ngokuphindwe kalishumi ububanzi bombhobho (10D); ukuba akukho zinto zintsonkothileyo, kufuneka ibe ≥ 5D.
     • Ezantsi komsinga (icala elikufutshane nesensor): ≥ 5D (ukuba kukho izinto ezichaseneyo emsinga, kucetyiswa ukuba zibe ≥ 3D).
   • Kuphephe ukufaka kwindawo ephezulu yombhobho (apho umoya unokuqokelelana khona) okanye kwindawo ephantsi (apho inkunkuma inokuqokelelana khona).
2. Isikhokelo soFakelo kunye neSithuba
   • Ngokwezinto zombhobho kunye nobubanzi, khetha indlela ye-V (amaza esandi adlula ngendlela engacacanga kumbhobho, afanelekileyo kwiidayamitha ezincinci neziphakathi) okanye indlela ye-Z (amaza esandi adlula ngqo kumbhobho, afanelekileyo kwiidayamitha ezinkulu okanye kwiipayipi ezixineneyo).
   • Izinzwa ezimbini (isiphelo sokudlulisa kunye nesiphelo sokwamkela) kufuneka zifakwe ngokulinganayo kumacala omabini ombhobho ukuqinisekisa ukuba indlela yezandi ihambelana ne-axis yombhobho, kwaye isithuba sihambelana nefomula yokubala kwincwadana ye-flowmeter (edla ngokunxulumene nobubanzi bombhobho kunye ne-angle ye-sound wave refraction).
3. Ziphephe Imithombo Yokuphazamisa
   • Gcina kude nemithombo enamandla yokuphazamiseka kwe-electromagnetic (ezifana neemoto, ii-transformers, ii-frequency converters) ukuthintela imiqondiso ye-electromagnetic ukuba ingaphazamisi ukuhanjiswa kwe-ultrasonic.
   • Gcina kude nemithombo yokungcangcazela (ezifana neempompo, iicompressor). Ukuba kuyimfuneko, faka ii-pads ezifunxa ukubetheka ukuze uthintele ukufakwa kakubi kwe-sensor ngenxa yokungcangcazela kwemibhobho.

III. Iinkcukacha zoMsebenzi woFakelo lweSensor

1. Unyango Lomphezulu Wemibhobho
   • Ngaphambi kokufakela, coca umphezulu wombhobho ukuze ususe umhlwa, ipeyinti, ioyile, okanye iileya ze-oxide ukuqinisekisa ukunxibelelana okusondeleyo phakathi kwesensor kunye nombhobho (ukuba kuyimfuneko, sandlisa ukuze ukhanye ngentsimbi; imibhobho engeyiyo yesinyithi kufuneka isuse ukungcola komphezulu).
   • Ukuba umphezulu wombhobho awulingani, sebenzisa i-arhente yokudibanisa ekhethekileyo (efana ne-silica gel, i-glycerin) ukuze uzalise izikhewu kwaye ungafaki umoya (umoya uya kunciphisa kakhulu amaza esandi). I-arhente yokudibanisa kufuneka ihambelane nesixhobo (ingabi yingcolisi kumbhobho).
2. Indlela yokulungisa iSensor
   • Sebenzisa isixhobo esikhethekileyo ukuze uqinise i-sensor kumbhobho ukuze uphephe ukukhululeka (ukukhululeka kuya kubangela ukungazinzi kwesignali), kodwa nikela ingqalelo kumandla okuthintela ukuguquka kombhobho okanye umonakalo we-sensor.
   • Kwimibhobho eguquguquka lula njengeyeplastiki, amandla okufakelwa kwayo kufuneka abe mancinci ukuze kuthintelwe ukuba umbhobho ungaxinwa ube mdaka uze uchaphazele indlela ohamba ngayo.
3. Uqhagamshelo kunye noKhuselo lweCable
   • Iintambo zesensor mazigcinwe kude nemigca ye-voltage ephezulu ukuze kuthintelwe ukuphazamiseka kwesignali, kwaye ubude bentambo kufuneka buhlangabezane neemfuno ezikwincwadi yemiyalelo (iintambo ezinde kakhulu zinokubangela ukuncitshiswa kwesignali).
   • Ukufakela ngaphandle, kuyimfuneko ukuvala iintambo ngamanzi (njengokufaka iindawo ezingangeni manzi) nokuzikhusela elangeni ukuze kuthintelwe ukuguga kweentambo.

IV. Uhlengahlengiso lweNdalo kunye neMeko yoMsebenzi

1. Ubushushu obuphakathi kunye nokufuma
   • Ubushushu obusebenzayo be-sensor kufuneka bube ngaphakathi koluhlu oluvumelekileyo lwezixhobo (ngesiqhelo -30℃ ~ +60℃). Kuphephe ukuvezwa ixesha elide kumaqondo obushushu aphezulu kakhulu, amaqondo obushushu aphantsi, okanye kwiindawo ezinomswakama ophezulu (faka izixhobo zokukhusela ubushushu okanye zokukhusela ilanga ukuba kuyimfuneko).
   • Ukuba ubushushu bendlela yokuhambisa umbhobho buphezulu kakhulu (njenge >100℃), qinisekisa ukumelana nobushushu obuphezulu benzwa ukuze uphephe ukungaphumeleli kwearhente yokudibanisa okanye umonakalo kwinzwa ngenxa yobushushu obuphezulu.
2. Iimfuneko zoBungqina bokuQhushulwa kunye noKhuselo
   • Xa ufaka kwiindawo ezinokutsha neziqhumayo (ezifana neendawo zokusebenzela iikhemikhali), khetha izixhobo zokuvavanya ukuqhuma ezihlangabezana neemfuno zomgangatho wokuqhuma kwindawo leyo.
   • Kwiindawo ezingaphandle okanye ezifumileyo, qiniseka ukuba umgangatho wokhuseleko lwezixhobo yi-≥ IP65 ukuthintela ukungena kwamanzi emvula nothuli.

V. Ukuqinisekisa kunye nokugunyazisa emva kokufakwa

1. Ukufunyanwa kwamandla esignali
   • Emva kokufakela, jonga amandla esignali nge-flowmeter host (edla ngokubonakaliswa njengepesenti okanye i-decibel). Qinisekisa ukuba isignali izinzile (kucetyiswa ukuba ibe yi-≥ 60%). Ukuba isignali ibuthathaka, lungisa indawo yesensa okanye i-coupling agent.
   • Jonga ukuba ukuhamba okukhawulezileyo kunye nokuhamba okuqokelelweyo kuyahambelana na neemeko zokusebenza zokwenyani (ukuqinisekiswa kungenziwa ngokuthelekisa namaxabiso okuhamba aziwayo okanye amaxabiso e-empirical).
2. Uvavanyo Lozinzo Lwexesha Elide
   • Jonga rhoqo ukulungiswa kwesensor kunye nemeko yearhente yokudibanisa (nokuba yomile okanye ayisebenzi), ingakumbi kwiimeko apho kukho utshintsho olukhulu okanye ubushushu.