Umbhobho wokukhusela intambo yamandla ye-MPP, umbhobho wamandla we-MPP

Ukusebenza kakuhle kwe-insulation: inokukhusela intambo ngempumelelo, ithintele umbane omfutshane.

Ukumelana nobushushu obuphezulu kunye nokumelana nokugqwala: inokugcina ukusebenza okuzinzileyo kwindawo enobushushu obuphezulu, kwaye kwangaxeshanye ikwazi ukumelana nokugqwala kweekhemikhali.

Amandla aphezulu oomatshini: ukumelana okuphezulu kokucinezela kunye nempembelelo.

Ulwakhiwo olulula: ubunzima obulula, ukufakwa ngokukhawuleza, kunokuqhagamshelwa nge-hot fusion welding kunye nezinye iindlela.

Ukusebenza kakuhle kokusingqongileyo: Le nto ayinangcoliseko kwaye inobomi obude benkonzo

1. Ilula, yenza kube lula ukuyithutha nokuyifakela; inokuguquguquka okuhle, yenza ukufakwa kube lula kwaye kungabizi kakhulu. Iyakwazi ukuphinda isetyenziswe, ihlangabezana nemigangatho yokusingqongileyo; xa umbhobho ugoba, uxinzelelo kwicandelo eligobileyo lunokukhululeka ngokukhawuleza, kuthintelwe 'ukugoba kwakhona' kwaye kube lula imisebenzi yokwakha, ngaloo ndlela kuthintelwe umonakalo ekugobeni ngenxa yoxinzelelo olugqithisileyo ngexesha lokusetyenziswa;

2. Ukulahleka okuncinci kokungqubana kumbhobho, amandla okuhambisa ulwelo lombhobho mkhulu nge-10% kunombhobho we-PE-X onobubanzi obufanayo; ukumelana nempembelelo kuphindwe kabini kunombhobho we-PE-X;

3. Ubushushu obuphantsi bokwaphuka kunye nokusebenza kakuhle kobushushu obuphantsi kwezinto zombhobho kwenza kube nokwenzeka ukwakhiwa ebusika phantsi kweemeko zobushushu obuphantsi, kwaye akufuneki kufudunyezwe kwangaphambili xa kugotywa umbhobho, nto leyo enokusombulula ilahleko yezoqoqosho ebangelwa kukungakwazi ukwakha kumantla eTshayina ngenxa yobushushu obuphantsi ebusika. Ubungakanani obuncinci bokugoba buphindwe kahlanu kunobubanzi bangaphandle bombhobho;

4. Ukumelana kakuhle nokugqwala kweekhemikhali, akukho mhlwa, ubomi benkonzo ende. Ngokubanzi, emva kweminyaka eliqela yokusetyenziswa, udonga lwangaphakathi lombhobho wentsimbi luba rhabaxa ngenxa yokugqwala okukhulu, kwaye ukumelana nokuhamba kwamanzi kuyanda, ngaloo ndlela kunciphisa kakhulu amandla okuhambisa amanzi; phantsi kobushushu obusebenzayo be-70℃ kunye noxinzelelo lwe-0.82MPa, umbhobho ungasetyenziswa ngokukhuselekileyo iminyaka engaphezu kwama-50;

5. Ukumelana okuhle kokuqhekeka, ukuqhekeka kombhobho we-PE-RT kuyatshintsha ngokutshintsha kobushushu, i-PE-RT ayifuni ipleyiti edibeneyo ngenxa yezinto ezikhethekileyo zokwenza imveliso, yakuba yenziwe emva kokuveliswa, ukuqhekeka kuhlala kuhleli;

6. Akukho zongezo zinobuthi ezongezwayo kwinkqubo yokuvelisa izinto zombhobho, udonga lwangaphakathi olugudileyo, akukho kukhula kwebhaktiriya, zingasetyenziswa ngokukhuselekileyo ekudluliseni amanzi okusela nakwezinye iindawo;

7. Ukusebenza kakuhle kokusasaza ubushushu, ukuhanjiswa kobushushu yi-0.4W/(m•K), kunokonga amandla amaninzi kwizicelo zokufudumeza, ngoko ke i-PE-RT inokunika ukusebenza okupheleleyo kwiimpawu zayo ezibalaseleyo kwicandelo lokufudumeza;

8. Ukuwelda: Emva kokuba umbhobho wenkqubo wonakele, ungafakwa i-hot fusion welding okanye i-electrofusion welding

Umbhobho wokukhusela intambo ye-MPP udibanisa ukhuseleko lokusingqongileyo, impilo, ukuvala, ukulwa nokugqwala, ukumelana nomlilo, umgangatho ophezulu, ixabiso eliphantsi, ulwakhiwo olulula kunye nezinye izibonelelo. Uneenzuzo ezilungileyo kwezoqoqosho nakwezentlalo kwicandelo lamandla ombane, kwaye unethuba elikhulu lokusetyenziswa.

Ezi zilandelayo ziindlela eziphambili zokuwelda kunye neendawo zokusebenza zombhobho wokufaka umbane we-MPP:

Ukuwelda okunyibilikisiweyo okushushu (okusetyenziswa kakhulu)

1. Ukulungiselela
Coca umphetho wombhobho uze usebenzise utywala ukususa ioyile, umswakama kunye nokungcola.
Jonga umbane womatshini wokuwelda, ioyile ye-hydraulic kunye nemeko yepleyiti yokufudumeza, uze usete ubushushu obuyi-200-225℃ (bonyuke ngokufanelekileyo xa ubushushu buphantsi).
Emva kokuba umbhobho ulungisiwe, ubuso bomphetho buyasilwa ukuqinisekisa ukuba ukungalingani kungaphezulu kwe-10% yobukhulu bodonga lombhobho.

‌2. Ukufudumeza kunye nokufaka idokhi
Emva kokuba ipleyiti yokufudumeza ifikelele kubushushu obufunekayo, khawuleza ufake umbhobho uze uwucinezele ukuze wenze iflengi kwicala lokugqibela (ukuphakama kweflengi kufuneka kuhlangabezane nobushushu obufunekayo).
Emva kokugcina uxinzelelo kunye nokufunxa ubushushu imizuzu emi-2, ipleyiti isuswa ngokukhawuleza kwaye iziphelo zepayipi zidibene neempundu ngaphandle kokujikeleza kwixesha elilinganiselweyo (ngesiqhelo imizuzwana emi-5-10).
Emva kokufaka i-docking, faka uxinzelelo oluzinzileyo kwaye uvumele ukupholisa kwendalo kangangemizuzu engama-≥ engama-20. Akuvumelekanga ukupholisa ngenkani.

Ukuwelda nge-electrofusion

1. Ukuhambelana kweparameter
Skena ibhakhodi yesingxobo sombane ukuze ufumane ngokuzenzekelayo iiparameter zomatshini wokuwelda (i-voltage, ixesha).
Susa ukungcola kwijoyinti kwaye uqinisekise ukuba umsantsa phakathi kombhobho kunye nesleeve uyafana.

2. Inkqubo yokuwelda
Qalisa umatshini wokuwelda kwaye ubeke iliso ekutshintsheni kwamandla ombane kuyo yonke inkqubo. Inkqubo iphela xa isibane sesalathisi sesimo sokunyibilika sicima.
Musa ukuyishukumisa ipayipi ngexesha lokupholisa.

Ezinye iindlela zoqhagamshelo

1. Uqhagamshelo lwesokhethi
Itywina yerabha kufuneka ibekwe ngokuchanekileyo kwaye icinezelwe ngesando ukuze kuthintelwe umonakalo.
Jonga ukutywinwa rhoqo, kulungele iimeko eziphantsi koxinzelelo.

2. Uqhagamshelo lweFlange
Iibholithi kufuneka ziqiniswe ngokulinganayo nangokulinganayo, kwaye iindawo zesinyithi ezifanayo kufuneka zifakwe i-hot-dip galvanized ukuze zikhusele ukugqwala.
Ifanelekile kwiipayipi ezinkulu ezifuna ukuqhaqhwa rhoqo.

Izilumkiso ngokubanzi

Ulawulo lokusingqongileyo: Xa ubushushu obuphakathi bungaphantsi kwe -5℃ okanye kukho umoya onamandla, kufuneka ukhuseleko lobushushu.

Ukuhlolwa komgangatho: Emva kokuwelda, jonga ukuba i-weld ithe tyaba na ukuze ubone ukuba kukho amaqamza okanye imifantu; yenza uvavanyo loxinzelelo ukuba kuyimfuneko.

Ukusebenza ngokukhuselekileyo: Kuphephe ukucinezelana ngexesha lokuwelda i-hot melt butt, kwaye abasebenzi bafuna uqeqesho lobuchwephesha

Isishwankathelo seenkcukacha kunye neemodeli zombhobho wokukhusela intambo yamandla ye-MPP

Iinkcukacha zayo kunye neemodeli zahlulwe kakhulu ngokwee-diameter zangaphandle, ubukhulu bodonga kunye nobude. Oku kulandelayo luhlelo oluneenkcukacha lweenkcazo ezifanayo:

1. Ukudibanisa ububanzi bangaphandle kunye nobukhulu bodonga

DN90mm
Ubukhulu bodonga: 5mm, 6mm

DN110mm
Ubukhulu bodonga: 6mm, 7mm, 8mm, 9mm, 10mm

DN160mm
Ubukhulu bodonga: 7mm, 8mm, 9mm, 10mm, 11mm, 12mm

DN180mm
Ubukhulu bodonga: 10mm, 12mm, 15mm

DN200mm
Ubukhulu bodonga: 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm

DN225mm
Ubukhulu bodonga: 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 18mm

DN250mm
Ubukhulu bodonga: 13mm, 14mm, 15mm, 16mm, 17mm, 20mm

2. Iinkcukacha zobude

Ubude bombhobho omnye obuqhelekileyo ziimitha ezi-6, iimitha ezi-9, iimitha ezili-12.

3. Iimeko zokwahlulahlula kunye nokusetyenziswa

Uhlobo lokumba: lufanelekile kwiiprojekthi zokubeka iintambo zesiqhelo.

Uhlobo olungeyombiwa (ipayipi yokugquma/yokutsala): isetyenziselwa ukhuseleko lweentambo kwiindawo ezikhethekileyo ezifana neendlela, oololiwe kunye nonxweme lomlambo ngaphandle komonakalo omkhulu emhlabeni.

Iingcebiso zokukhetha:

Ububanzi obuncinci (obufana ne-DN90mm, DN110mm) busetyenziswa kakhulu ekubekeni iintambo ngokubanzi, ubukhulu bodonga buncinci kakhulu;

Ububanzi obukhulu (obufana ne-DN200mm nangaphezulu) bufanelekile kwiintambo ze-voltage eziphezulu kakhulu okanye kwiindawo ezintsonkothileyo (ezifana nokuwela iindlela), kwaye ubukhulu bodonga obukhulu kufuneka bukhethwe ukuze kuphuculwe amandla okuthwala uxinzelelo.

4. Imo yoqhagamshelo

Indlela yoqhagamshelo lombhobho wokukhusela intambo ye-MPP ikwayinxalenye yeenkcukacha zayo. Iindlela zoqhagamshelo eziqhelekileyo ziquka uqhagamshelo lwesokethi, uqhagamshelo lwe-hot fusion, uqhagamshelo lwe-electrical fusion, njl. Iindlela zoqhagamshelo ezahlukeneyo zifanelekile kwiimeko ezahlukeneyo zesicelo kunye neemfuno zobunjineli, kwaye ukukhetha imo yoqhagamshelo efanelekileyo kunokuqinisekisa ukhuseleko kunye nokuthembeka kombhobho wentambo.

Xa ukhetha imibhobho yokukhusela intambo ye-MPP, kubalulekile ukuqwalasela iimfuno ezithile zeprojekthi, iimeko zokwakha, kunye neenkcukacha kunye neempawu zeentambo, ukuqinisekisa ukuba zonke iinkcukacha ziyahambelana. Ukongeza, ukuqinisekisa umgangatho kunye nokhuseleko lweentambo, kubalulekile ukukhetha abavelisi abaziwayo kunye neemveliso ezikumgangatho ophezulu. Ngexesha lenkqubo yokwakha, kuyimfuneko ukulandela imigangatho yokwakha efanelekileyo kunye neemfuno zobugcisa ukuqinisekisa umgangatho wokufakelwa kunye nokusebenza kakuhle kweentambo.

Ngamafutshane, umbhobho wokukhusela intambo ye-MPP uneendlela ezahlukeneyo zokuchonga, kwaye ukukhethwa kweendlela ezifanelekileyo zokuchonga kunye nendlela yokuxhuma kubaluleke kakhulu ekukhuseleni intambo. Kwindlela yokusebenza ebonakalayo, kuyimfuneko ukuqwalasela nokukhetha ngokupheleleyo ngokwemeko ethile ukuqinisekisa ukhuseleko, ukuthembeka kunye nokusebenza kakuhle kwentambo yombhobho.