Ukufakela ngokufanelekileyo kubalulekile ukuze kufezekiswe umlinganiselo ozinzileyo nochanekileyo nge-ultrasonic flow meter. Enye yezona mfuno zibalulekileyo zokufakela yiubude bombhobho othe tyengaphambi nasemva kwendawo yokulinganisa.

Njengesikhokelo sokufakela ngokubanzi, imitha yokuhamba kwe-ultrasonic kufuneka ibe:

• Ubuncinane i-10D yombhobho othe tye onyukayo
• Ubuncinane i-5D yombhobho othe tye osezantsi komlambo

aphoU-D bububanzi bangaphakathi bombhobho.

Umzekelo, ukuba ububanzi bombhobho ongaphakathi buyi-200 mm, ubude bombhobho othe tye obucetyiswayo buya kuba malunga2,000 mm ukusuka phezulu ukuya ezantsi kunye ne-1,000 mm ukusuka ezantsi ukuya phezulu.

Kodwa kutheni imitha yokuhamba kwe-ultrasonic ifuna icandelo lepayipi elithe tye kangaka?

1. Kwenzeka ntoni kwi-flow emva kokufakelwa kwepayipi?

Phantsi kweemeko ezifanelekileyo, ulwelo oluhamba ngombhobho omde othe tye luphuhlisa iprofayili yesantya esizinzileyo.

Nangona kunjalo, iimeko zokuhamba kwamanzi zingatshintsha kakhulu emva kokudlula kwizinto ezifana nezi:

• Iingqiniba
• Iivalvu
• IiTie
• Izinciphisi
• Abakhulisi
• Iimpompo

Ezi zixhobo zingadala:

• Ingxolo
• Ukuhamba okujikelezayo
• Ukuhamba kwesibini
• Ukusasazwa kwesantya esingalinganiyo
• Utshintsho lwengingqi kwisantya sokuhamba

Ukuba imitha yokuhamba kwe-ultrasonic ifakwe kufutshane kakhulu nezi ziphazamiso, iprofayili yesantya isenokungabi namgama waneleyo wokuzinza.

Oku kunokuchaphazela ukuchaneka kunye nokuzinza komlinganiselo wokuhamba kwamanzi.

2. Kutheni i-Upstream Straight Pipe ibaluleke ngakumbi?

Iicandelo lombhobho othe tye ophezulukubaluleke kakhulu kuba ukuphazamiseka okwenziwe ngaphambi kwendawo yokulinganisa kuchaphazela ngokuthe ngqo iprofayili yesantya engena kwicandelo lokulinganisa.

Umzekelo:

Ingqiniba → Isiphithiphithi → Ukuhamba Okujikelezayo → Iprofayili Yesantya Esingalinganiyo → Imitha Yokuhamba Kwe-Ultrasonic

Ukuba imitha yokuhamba kwamanzi ifakwe kwangoko emva kwengqiniba, ii-transducers zisenokuba zilinganisa iprofayili yokuhamba kwamanzi egqwethekileyo kakhulu.

Ukubonelela malungaI-10D yombhobho othe tye onyukayoinika ukuhamba komoya umgama omde ukuze kuphuhle kube kwimeko ezinzileyo ngaphambi kokuba kufikelelwe kwinqanaba lokulinganisa.

3. Kutheni i-5D ifuneka ezantsi?

Icandelo lepayipi elithe tye elisezantsi nalo libalulekile, nangona impembelelo yalo ngokubanzi ingaphantsi kunecandelo elisezantsi.

IcebisoUmbhobho othe tye ongezantsi we-5Dinceda ukuqinisekisa ukuba icandelo lokulinganisa alichaphazeleki ngoko nangoko kukuphazamiseka kokuhamba kwamanzi okuhambayo.

Ikwabonelela ngendawo eyaneleyo yokuba amanzi aqhubeke nokukhula emva kokudlula kwindawo yokulinganisa.

Ngoko ke, ulungiselelo oluqhelekileyo lokufakela lungamelwa ngolu hlobo:

Phezulu: ≥10D → Imitha yokuHamba kwe-Ultrasonic → ≥5D: Ezantsi

4. Iprofayili Yokuhamba Okugqwethekileyo Ichaphazela Njani Ukuchaneka Kokulinganisa?

Isixhobo sokulinganisa ukuhamba kwamanzi esibizwa ngokuba yi-ultrasonic ekugqibeleni kufuneka simisele isantya sokuhamba kolwelo kumbhobho.

Nangona kunjalo, isantya asifani kuzo zonke iindawo kumbhobho.

Phantsi kweemeko ezizinzileyo, ukusasazwa kwesantya kunokuqikelelwa.

Emva kwengqiniba okanye ivalvu, iprofayili yesantya inokuba yi-asymmetric:

Ukuhamba Okuzinzileyo

→ Ukusasazwa kwesantya esifanayo

Ukuhamba Okuphazamisekileyo

→ Ukusasazwa kwesantya esingalinganiyo + ingxolo + ukujikajika

Ukuba icandelo lokulinganisa likufutshane kakhulu nokuphazamiseka, umlinganiselo we-ultrasound usenokungasameli ngokuchanekileyo isantya sokuhamba kwamanzi esiqhelekileyo.

Oku kunokubangela oku:

• Ukuphambuka komlinganiselo
• Ukufundwa okungazinzanga
• Ukungaphindiki kakuhle
• Ukungaqiniseki okwandileyo kokulinganisa

5. Kutheni iingqiniba ziyinto eqhelekileyo?

Ingqiniba enye ingatshintsha indlela oluhamba ngayo ulwelo kwaye idale iprofayili yesantya esingalinganiyo.

Imeko ingaba nzima ngakumbi xa kukho:

• Iingqiniba ezimbini zisondelelene
• Iingqiniba ezimbini kwiindidi ezahlukeneyo
• Ingqiniba ilandelwa yivalvu
• Ingqiniba ilandelwa sisinciphisi
• Ingqiniba ekufutshane nepompo

Ezi zakhiwo zinokubangela i-turbulence enamandla kunye ne-swirl.

Ngoko ke, nanini na xa kunokwenzeka, i-ultrasonic flow meter kufuneka ifakwe kwicandelo lombhobho elinobude obuthe tye obaneleyo.

6. Iimpompo kunye neeValvu zoLawulo zifuna ingqwalasela ekhethekileyo

Iimpompo kunye neevalvu zokulawula ezivulekileyo kancinci zinokubangela ukuphazamiseka okukhulu kokuhamba kwamanzi.

Umzekelo:

Ipompo → Imitha yoMsinga

ingatyhila icandelo lokulinganisa ku:

• Ingxolo enamandla
• Ukuhamba okujikelezayo
• Ukusasazwa kwesantya esingalinganiyo
• Ukutshintshatshintsha koxinzelelo

Ngokufanayo:

Ivalvu Evuleke Kancinci → Imitha Yokuhamba

ingenza ipatheni yokuhamba kwamanzi ephazamisekileyo kakhulu ngezantsi kwevalvu.

Kwezi meko, ukugcina ubude obufanelekileyo bombhobho othe tye onyukayo kubaluleke kakhulu.

7. Kwenzeka ntoni ukuba akukho mbhobho uthe tye owaneleyo?

Kwiifektri zokwenyani, akunakwenzeka rhoqo ukufezekisa i-10D ephezulu kunye ne-5D esezantsi.

Ukuba umbhobho othe tye okhoyo umfutshane kakhulu, imitha yokuhamba kwamanzi inokuba namava alandelayo:

• Impazamo yokulinganisa eyonyukileyo
• Ukufundwa okungazinzanga
• Ukungaphindiki kakuhle
• Ukwanda kovakalelo kwiimeko zofakelo

Okubalulekileyo kukuba, isignali enamandla ye-ultrasound yenzahayikuthetha ukuba umlinganiselo wokuhamba kwamanzi uchanekile.

Imitha yokuhamba kwamanzi inokufumana isignali enamandla ye-ultrasound ngelixa iprofayili yesantya sokwenyani isaphazamisekile kakhulu.

Ke ngoko:

Amandla esignali alungileyo kunye nokuchaneka kokulinganisa ukuhamba kakuhle kunxulumene, kodwa azifani.

8. Ifanele ikhethwe njani indawo yokufaka?

Xa ukhetha indawo yokufakela, zama ukubonelela:

Phezulu

Ubuncinane i-10D yombhobho othe tye

Ezantsi

Ubuncinane i-5D yombhobho othe tye

Ukongeza, kuphephe ukufaka i-flow meter:

• Phantsi kwepompo kwangoko
• Ngaphantsi kwevalvu yokulawula
• Emva nje kokufakelwa kombhobho ontsonkothileyo
• Kwiindawo ezinentshukumo enamandla yepayipi
• Kwiindawo apho umoya unokuqokelelana khona
• Kwiindawo zepayipi ezizaliswe kancinci

Umbhobho nawo kufuneka uhlaleigcwele ulwelo ngokupheleleyongexesha lokusebenza okuqhelekileyo.

9. Lithetha ukuthini igama elithi “D”?

Kwi10D/5Disikhokelo sokufakelwa,U-D ubhekisa kububanzi bangaphakathi bombhobho.

Umzekelo:

Ngoko ke, xa ukhetha indawo yokufakela, ubude bombhobho othe tye obufumanekayo kufuneka buqwalaselwe ngaphambi kokufaka imitha yokuhamba kwe-ultrasonic.

10. Kutheni Ubude Bepayipi Ethe Tye Bubalulekile Kwimitha Yokuhamba Kwee-Ultrasonic Ezifakwe Kwi-Clamp-on?

Enye inzuzo enkulu ye-clamp-on ultrasonic flow meter kukuba ii-transducers zinokufakwa ngaphandle ngaphandle kokusika okanye ukuguqula umbhobho.

Oku kwenza kube lula ukukhetha enye indawo efanelekileyo yokulinganisa ukuba indawo yokuqala ayinayo ipayipi ethe tye eyaneleyo.

Umzekelo, endaweni yokufaka ii-transducers emva nje kokubetheka ngengqiniba, injineli ingazihambisa ziye nganeno ukuze ifumane icandelo lombhobho elide elithe tye.

Le yenye yeenzuzo ezisebenzayo zokulinganisa ukuhamba kwe-ultrasonic nge-clamp-on kwimibhobho yemizi-mveliso ekhoyo.

Injongo yokusetyenziswa kwemibhobho ethe tye kukubonelela ngemitha yokuhamba kwe-ultrasoniciprofayili yokuhamba okuzinzileyo nokumeleyokwindawo yokulinganisa.

Iingqiniba, iivalvu, iimpompo, ii-tee, ii-reducers, kunye nezinye izinto ezifakelwayo zinokuphazamisa ukuhamba kwaye zidale i-turbulence, i-swirl, kunye nokusasazwa kwesantya esingalinganiyo. Ukuba imitha yokuhamba kwe-ultrasonic ifakwe kufutshane kakhulu nezi ziphazamiso, ukuchaneka kokulinganisa kunye nokuzinza kunokuchaphazeleka.

Njengesikhokelo sokufakela ngokubanzi:

Umbhobho othe tye onyukayo ≥ 10D
Umbhobho othe tye osezantsi ≥ 5D

aphoU-D bububanzi bangaphakathi bombhobho.

Ukulandela iimfuno ezicetyiswayo zepayipi ethe tye, kunye nokufakelwa kwe-transducer efanelekileyo kunye nepayipi egcwele ngokupheleleyo, kunokuphucula kakhulu ukuthembeka kunye nokuphindaphindwa kokulinganiswa kokuhamba kwe-ultrasonic.