Imithombo YehDPE Yokusebenza Kwinkqubo Yokubhala Ngaphandle Kokukhanyisa: SDR, Ububanzi Bomthombo Nokulandela Imithombo Yokuqonda KweHDD

Imithombo YehDPE Yokusebenza Kwinkqubo Yokubhala Ngaphandle Kokukhanyisa: SDR, Ububanzi Bomthombo Nokulandela Imithombo Yokuqonda KweHDD

Kukhetha ithuba le-HDPE lokusebenza kwezindlela ezingavuli, izinto eziningi ziyagcina phambili kububanzi bepampu nobukhulu bephressha. Ukubhala ngokuphakeme kwezizinda (HDD) kwenza izimali zokusebenza ezithile, kufaka kuwo izimali zokuphatha, izimali zokugqibela, nezimali zokuphuma kwesandla yasezulwini ngokuphatha. Ngakho ke, ukhetho lwe-pipe kufanele libe nomlando wezimali zokusebenza nezimali zokusebenza kude.

Kungani ithuba le-HDPE liyisisekelo sokusebenza kwezindlela ezingavuli?

Emaphakathini, abantu bafunda ngokushesha: kungani izilwanyana zokugcina ezihlakweni ziyadinga ukususa okushesha nokuhlela? Kunezizindlela eziningi, kodwa eyinkulu kweziyo kukuthi izilwanyana zihlakwa ngokusemva kwezinye izinto, njengokuphela kwamathambo, ukuvulwa kwamaphuzu, noma ukubhekiswa kwezinye izinto emuva kokusebenza phansi kweminyaka eyinkulu—umzekelo, lapho izihlangu ezingaphezulu zihamba ngendlela, ubunzima buhambisana ngendlela yasezulwini kuzilwanyana, futhi izilwanyana ezingenakho ubunzima obukhulu bamtshato noma amaphuzu angavali, bazihlakwa ngokushesha. Ngokuphila kwamathambo wokufaka izilwanyana, izilwanyana ze-HDPE (high-density polyethylene), ngokuba zinamathuba okusebenza kanye nezinkinga zokuthenga, zazibuyela zingaba yizilwanyana ezinkulu zokufaka izilwanyana emaphakathini nasezindustrini ngendlela engasolwa ngendlela. Okulandelayo kuchaza ukusebenzisa kwayo kusuka kwezindawo ezinkulu ezintathu.

1. Ubunzima obuhle, obuyisisekelo lokufaka ngendlela yokubheka noma lokufaka ngendlela yokubheka.

Izihlazi ze-HDPE ziyinkimbinkimbi kakhulu futhi zingakwenzeka ukubuka kwezinye izindawo, okusiza kuzoba ngokulandela umgomo wokubhukuda kanye nokubuka ngokuphambuka kwezinye izinto ezisemaphakathini njengezihlazi zokubhukuda kanye nezindawo zokubhukuda ngokuphambuka kwezinye izinto ezisemaphakathini. Ngokubhukuda kanye nokubhukuda kwezihlazi, izihlazi kufanele bakhululeke kwezindlela zokubhukuda, izindlela zokubhukuda kanye nezindlela zokubhukuda kwezinye izinto ezisemaphakathini njengezihlazi zokubhukuda kanye nezindawo zokubhukuda ngokuphambuka kwezinye izinto ezisemaphakathini; i-HDPE ayikwazi ukubhukuda kahle. Ngokulingana, izihlazi ze-PVC nezihlazi zokubhukuda ziyinkimbinkimbi kakhulu, zinezindlela zokubhukuda kancane, futhi ziyizindlela zokubhukuda kahle ngokubhukuda kwezinye izinto ezisemaphakathini. Izihlazi ze-HDPE ziyasebenza kahle kwezindawo ezingabonakali kahle kanye nezindlela zokubhukuda kwezinye izinto ezisemaphakathini, okusiza kuzoba ngokuphepha ukubhukuda kahle kanye nokubhukuda kahle.

2. Kuncane kakhulu, okusiza kuzoba ngokuphepha ukusebenzisa izinkampani kanye nokubhukuda.

Amaphipe we-HDPE ayathuma ngeminyaka yamashumi ayisithupha (1/8) yamaphipe we-steel, okuvumela ukuthumela nokufaka ngaphandle kokudinga kwemikhili eminkulu yokuhlela. Umkhulu omncane wawo kusho ukuthi kukhona umthelela omncane kwe-directional drilling futhi umkhulu wokusebenza kwe-rig uyancane, okuvumela ukuthi kufakwe amaphipe angaphezu kwezilinganiso eziningi ngokugcina, ukunciphisa inombolo yamaphondombe okusebenzisa nokuthola, futhi ukwakha indlela yokwenza iziprojekthi zokugxila emazini, emagweba, emagweba wezilwanyana, njll.

3. Ukuxhuma kwe-hot-melt/electrofusion okubhalwe ngokujabulisayo, noma umthelela wokuxhuma akahleli phansi kweyokuphakeme kwe-mphipe.

Kabefore ukwenza umsebenzi wokuphatha amapipa ngaphandle kokukhanyisa, amapipa angakhiwa ngokugqamisa kahle kwezinye ezinkulu kusuka emhlabeni futhi ngemuva kwalokho abuyiselwa ngaphansi kwemhlaba ngokushesha, okunika indlela yokubeka amapipa ngaphansi kwemhlaba ngokungafanele ukusebenzisa amasimbi. Ukugqamisa kahle kwenza isithembiso esifanayo nesithembiso samapipa, futhi ubukhulu bakhe bakwesikhundla sokugqamisa akani kancane kubukhulu bakwesithembiso samapipa, okunikela ukuthi akufanele ukuba kubhekwe ngokuphathwa kwezinye izindawo zokugqamisa noma ukudlula kwezinye izindawo zokugqamisa. Ngaphandle kwalokho, ukugqamisa kwezincwadi zama-PVC nokugqamisa kwezincwadi zama-cast iron ngokusetshenziswa kwamaringa we-rubber kubalulekile kakhulu ukuthi kubhekwe ngokuphathwa kwezinye izindawo zokugqamisa ngokuphathwa kwezinye izindawo zokugqamisa, okuyisibonelo esingasendulo sokuthi kubhekwe ngokuphathwa kwezinye izindawo zokugqamisa kumsebenzi wokuphatha ngaphandle kokukhanyisa.

4. Ubukhulu obukhulu bokuvikela kwezinkinga zokuchitha kwezinkinga zokuchitha kanye nobude bendlela yokuSebenza.

HDPE akasenza ukuphatha kwe-electrochemical futhi ikhona imithwalo emihle ekukhanyeni kwe-acids, alkalis, amasalti, amafutha, kanye nezinye izinkampani zemifutha emhlabathini, futhi ngokuvamile akadingi ukufaka isikrapi sokukhanyisa. Ngemikhawulo yokuqonda kokusebenza, umkhawulo wakhe wokusebenza ungafika ku-50 iminyaka (umkhawulo wokusebenza othile uyiphendula eminye imithwalo yezinto ezisemthwakweni kanye nokuzimela kwemikhawulo yokusebenza), okusiza kakhulu ekulula ukulungisa nokulungisa izinhlangano zemiphasi ngemva kwalokho. Kuyasebenza kahle kubaphathi obuhlakani bokuburya kwezinhlangano zokuhambisa izinto zokuchema, amafutha, kanye nezinkampani zemifutha.

5. Isibhakabhaka esihlanu, ukuthumela kahle

Amaphayipi we-PE ane-inthekhishini yemphakathi yabo engeziwe, futhi kungakhathaliseki ukuthi kubhekwe noma kubhekwe kwezinye izinto. Ngokufanayo kwezindawo zomphakathi, amaphayipi aya kubhekwa ngokuphelele kunezindawo zomphakathi zezinkulungwane zomkhumbu. Emva kokufakwa kwazo, amaphayipi ayasebenza ngokuphansi kwezimali zokusebenza ngokuphelele, kusukela ekunciphiseni izimali zokuhlela amaphayipi. Lokhu kusiza emisebenzini yezinsizakalo, ukuzilima, nokuthumela amasimbi nezinye izinto ezinamandla.

6. Ukubhekwa kahle kwezinkinga zokugqibela phansi komhlaba, kuyasebenza kwezinkinga zokuphambana kwezintempo.

Amaphayipi we-HDPE akabhekwa kahle kwezinkinga zokugqibela phansi komhlaba. Ngakho-ke, uma kusebenziswa ukufaka kwezindawo zomphakathi ngaphandle kwezindawo zomphakathi emazweni eNorth noma emazweni okugqibela phansi, akabhekwa kahle kwezinkinga zokugqibela phansi noma kubhekwa kahle kwezinkinga zokugqibela phansi uma kusebenziswa ukufaka kwezindawo zomphakathi ngaphandle kwezindawo zomphakathi. Kuyasebenza kahle kwezinkinga zokufaka kwezindawo zomphakathi ngaphandle kwezindawo zomphakathi kwezinkinga zezintempo nezinkinga zezindawo zomhlaba.

7. Ukubakwa kwenza iziphumo eziningi zokuphatha ekupheleni kwemisebenzi yekonomi ngokusebenzisa indawo encane yokubakwa.

Lapho kusetyenziswa imithambo yokuqondisa ngaphandle kokubakwa njenge-“directional drilling”, ukubakwa kwamanje, noma ukubuyisela amapipa, kuphela amaweli okusebenza amancane abakwa kufuneka, futhi akukho inkinga yokubakwa kwezindawo ezingaphezulu kwezindlebe zomhlaba noma emazini. Lokhu kunciphisa izindlela zokubakwa, ukususa izinto ezingavumelekile, nokubuyisa izindlebe zomhlaba. Ngokulingana nokubakwa kwezindawo zokubakwa, isikhathi sokubakwa kusha kakhulu, kunciphisa ukungena kwezindlebe zomhlaba noma kwezinto ezingavumelekile, futhi ukuvumela kusha kakhulu, okuyisibonelo esihle sokubakwa kwamapipa emagugu. Ukubakwa ngendlela yokuzilanda kungafika kwezimitha ezingu-100 noma kude kakhulu ngokugcina kanye, ngokuchaza kwezinkampani zamapipa, izimo zezinsizakalo, nokwesikrini sokubakwa.

8. Ukubakwa kungahlanganisa izindlela eziningi zokubakwa ngaphandle kokubakwa, kufikiza izindlela eziphathelene ngezinsizakalo.

• Ukudrillwa kwezinkulungwane ngokuhambisana: Kuyasebenza kubizwa ngokuthi kusetyenziswa ekufakweni kwemithambo entsha, njengoko kufakwa emaphathini nasezilabhaleni.
• Ukuvula imithambo yezindawo ezedlule: Ukuvula imithambo yezindawo ezedlule yezincwadi zomthambo wokuzala okwedlule noma wokuzala wokuphakathi, futhi ukubiza imithambo entsha ye-PE ngokufanayo emanzini awo.
• Ukurepaira imithambo yezindawo ezedlule: Imithambo ye-PE ibizwa ngaphakathi kwemithambo yezindawo ezedlule ukuze kwenziwe ukurepaira, ngaphandle kokubiza kabusha.

 

Amaspecifikhesi wezintechinikhi ezibalulekileyo wezimithambo ze-HDPE esetyenziswayo ekudrillweni kwezinkulungwane (HDD)

Kukhethwa imithambo ye-HDPE ekudrillweni kwezinkulungwane (HDD), amaspecifikhesi wezintechinikhi abalulekileyo alandelayo ayisikhuba sokukhetha:

umklamo	Amalungiselelo Angaphakathi
Impahla	PE100 noma PE100-RC eyisikhuba sokuvula
SDR (Isilinganiso sesikhundla)	Amamodeli amaningi akhuseleka ku-SDR11, SDR17, ne-SDR21. Khetha ngokubonakalisa isiforce sokubiza futhi isipresha sokusebenza.
Ubude bendawo	DN110 ku-DN1200
Umthombo wokuxoxwa	Ukubamba ngokuchitha kwezinkulungwane, ubunzima bewesibamba ayikho phansi kwebunzima bewesithambo.
Umsebenzi wokufaka	Yadlulwe ngokupheleleyo ukufaka ngokubuyisa kwe-HDD

 

Kwesikhashana, izihlangu ze-HDPE kumazixhobo e-HDD ziyasebenzisa izihlangu ze-PE100 noma izihlangu ze-PE100-RC ezingenakukhona imithi, nezinhlobo zezihlangu ezimeka kusuka ku-DN110 ku-DN1200, zifundisa izidingo zokubuyisa kwezihlangu zokunika amanzi emaphulamandla, kusukela kwezihlangu ezingaphezulu kwezihlangu zokusebenza emindeni. Indlela yokuxhuma iyasebenzisa ukuxhumana ngokuchitha kwemibili ngokupheleleyo ukuze kuvumeke ukuthi umkhakha wokuxhuma uyisilinganiso sokuzimela kwezihlangu, ukuvikela ukudlula okanye ukuphakama kusukela kwezihlangu kusukela kwezihlangu. Isilinganiso se-SDR siyindlela eyinkulu yokuvavanya ukuthi izihlangu zizimela njani nokuthi ubude bezihlangu baziqinisekile, futhi kudingeka ukuzilungiselela ngokupheleleyo ngokulinganisa izimo zokusebenza (bheka ngezansi).

 

Ukukhetha isilinganiso se-SDR kumazixhobo e-HDD

SDR (Isilinganiso sesikhundla sokubhala, okuthi yindlela yokuhlanganisa ubude besikhundla sokubhala nesikhundla sokubhala sobugcwele) yisibonelo esibalulekile kakhulu xa kusukwana izipha zase-HDPE zokusebenza kwezindlela zokufaka ngaphandle kwemithambo (HDD). Okuphansi kokuba kwe-SDR, okuphansi kwezikhundla zokubhala zezipha futhi okuphansi kwezinhloko zokubhala; isibonelo, ngaphakathi kwezikhundla zokubhala zombili, ubude besikhundla sokubhala se-SDR11 sibhala kune-SDR17, futhi ukubhala kwezinhloko zokubhala kuyabhalwa kahle, okwenza ukuthi kubheke kahle futhi kubhekene ngokuphelele xa kubhekene nezinhloko zokubhala zombili.

Izirhino zesikhundla sokubhala zokusebenza kakhulu kwezizipha ze-PE100/PE100+ kwezindlela zokufaka ngaphandle kwemithambo (HDD) ziyafanayo:

Isilinganiso se-SDR	Izinkimbinkimbi zebhodi yezipha	Amaphutha angayibuyeleka
SDR 11	Ibhodi enzima, ukubhala kwezinhloko zokubhala kuyakhulu kakhulu	Ukuhamba kwezindawo ezide zokufaka ngaphandle kwemithambo (amadluli, amazwe amaningi), ukuthunywa kwamanzi okukhulu noma izipha zokusebenza kwezindustria, nokuthi kufanele kubhekene nezinhloko zokubhala ezikhulu.
SDR 17	Ubude besikhundla sokubhala obuhle, ukuthenga kuyabhala kahle	Kusukela kwezinkampani zokunika amanzi emizini, ukudrila okuphakathi kwesikhathi sikhulu kakhulu kusebenza ekubeni kwezinhlangano zokunika amanzi emizini.
SDR 21	Okuphansi kwezinyathelo, okunamandla	Akukho kuchazwa ukuthi kusebenze kwezindawo eziphakathi kwezindawo eziningi ukudrila okuphakathi kwezindawo eziningi, ukudlula ngokwesibhamu, noma ukudlula okuphakathi kwezindawo eziningi.

 

Ngokugcina, i-SDR11 inenqubo enkulu kakhulu futhi inamandla okuphambana nokushisa okuphakathi kakhulu, ngakho ke yilona okukhethwa kahle kumaqondo okudlula okuphakathi kwezindawo eziningi, izindlela zokudlula izindawo eziningi, nezindawo eziningi zokuphambana nokushisa okuphakathi kakhulu, njengoko kuyasebenza kwezindawo zokunika amanzi okuphakathi kakhulu noma kwezindawo zokusebenza kwezindawo zokusebenza. I-SDR17 inenqubo eyisisekelo, isebenza kahle kumaqondo okuphambana nokushisa, amandla okuphambana nokushisa, nokuthenga kwezindawo, futhi yilona okusebenza kakhulu kwezindawo zokunika amanzi emizini kwezindawo zokudlula okuphakathi kwezindawo. I-SDR21 yilona okuphansi kwezinyathelo, okunamandla, okusebenza kuphela kumaqondo okuphambana nokushisa okuphakathi kakhulu, ukudlula ngokwesibhamu, noma ukudlula okuphakathi kwezindawo eziningi, futhi akukho kuchazwa ukuthi kusebenze kwezindawo zokudlula okuphakathi kwezindawo eziningi.

 

Kufanele kubhekwe ukuthi ukukhetha isikhundla se-SDR sifanayo kufanele kubhekwe izinto ezithile njengezindlela zokubala umthelela wokubuyela, uphinde ubhekele ipresha yamasebenzi, ubude be-drilling, nezimo zezulwane, futhi kufanele kubhekwe ngokujabulisana ngumkhankhansi ngokusebenzisa izindlela zokusebenza (njenge-GB/T 13663). Izikhundla ezelwa kule ngculi ziyizinkingo zokukhetha kuphela.

 

Imigomo yokudesign ya-HDD: Izinkomba ezibalulekile zokubhekisisa ukubuyela nesikhumbuzo sokuhlinzekile

Izinyanga ezimbili zokuqala zibhekisa umbuzo we-"yini le-material ne-SDR grade okufanele kakhulu?" kodwa ukudesign ya-HDD okwenzelwayo kufanele kubhekise umbuzo omuhle othile: liyisikhumbuzo sokuhlinzekile na-kwakho lokhu kubhekise ubude be-borehole, izimo zezulwane, nokuphakama kwesikhombisa? Izinkamba ezishumi elishumi zilandelayo ziyizinkingo ezibalulekile ezifanele kubhalwa nabezibhekiswe ngokudesign ya-HDD, futhi zinikezwa njengesikhumbuzo ekupheleni kweminyaka yokuqala yokubhekisa iphrojekthi.

1. Ubude obuncane bokuphakama

Ukuphakanyiswa kwe-trajektori yokubhukuda kufanele kube kakhulu kune-radius yokuqondisa okuncelwa ngokwesibonelo; ngakho-ke, ukubhukula kwezinye izindawo, ukuphakanyiswa kwezindawo, noma ukubhukula kungenza kuthi kubhukulwe ngokuphakanyiswa kwe-trajektori. I-radius engcwele yokuphakanyiswa iyinhloko yediameter yezandla zokuphakanyiswa, i-SDR grade, i-grade yomthwalo, nokuthi kuyisikhathi sokwenza umsebenzi, futhi amaphuzu ayo avela kuma-standard amabili nezithengisi ziyahlukena. Kuma-projekthi omuhle, kufanele sisebenzise ama-parameter ethu atholakala kusuka kuzithengisi zemithwalo nezithengisi zokudesign (njenge-ASTM F1962 noma ama-standard amabili emisebenzi), futhi akufanele sisebenzise isibonelo esifanayo ngokugcina.

2. Ukuphakanyiswa okuncelwa kwe-tensile kunye nesifactor sokuvumela ukuthi kusebenze ngokuphelele

Ukukhokha kwempilo yokuphakama okwenzekayo okungafanele kwe-pipe kuyidepende kwe-product yokuqala yokuphakama kwe-pipe (noma ukusiza kokubhekisele) nokuzingela kwe-pipe, kugxilwe ngumkhakha wokuphepha. Umthwalo wokuphakama okufanele wokukhokha kuyisethi yasezindaweni zokuphakama kwe-pipe kanye nezinkampani zokubhekisa, futhi kuyidingeka ukuthi kubhekiswe ngokuphepha kwezinhloso zokusebenza; akukho kuthiwa ngokuphakeme kwezinhloso zokusebenza.

3. Izinqubo eziphakathi zokukhokha kwempilo

Ukuqondwa kokuphuma kwempilo kuyisibonelo sokubalwa kwezinto eziningi, kusukela kwezinkundla zokuphuma kwebhokisi emandleni wemithambo (kungakho ubunzima bakhe ngokwesikhashana), ukuthabatha kwezinye izinkundla phakathi kwesibhokisi nesibhokisi sobuhlungu nobumthwalo, ukuthabatha okudala kuzo izikhulukane zebuhlungu (kufanayo ne-"winch effect," apho ukukhuluka kwezikhulukane nokuchaza kwezinkundla kuyizinkinga ezingaphezulu), nokuthabatha okudala ngokugcina kwebhokisi. Izindlela zokubala ezisetyenziswa ngokujwayelekileyo kwezindustria (njengezindlela zika-PRCI) zinikeza iziphakamiso ngokudibanisa lezi zinkundla, kodwa kusho kwezinye ukuthi abadesigner bafunde lezi ziqondlo ngokusebenzisa imboni yezinsizakwesibhokisi kanye nokubona ngokubalwa kwezinhloko zokuphuma kwezinsizakwesibhokisi.

4. Isikhulukane sendawo yokubhokisa nobhumthwalo

Umbhalo wokubhala kwezinkundla kufanele kube nemiphumela yezinkundla eziphakathi kanye nezinkundla zokuphakama kwezinkundla. Isilinganiso esithile sisebenza ngokulingana nembhalo yezinkundla, imizimba yezindawo, nokuthi kungani umkhakha wokubhala. Uma umbhalo wokuphakama kwezinkundla ubuncane kakhulu, kuzoba kubhekiswe kakhulu ukukhula kwesikhathi sokubhala kanye nokuthi kuzoba kubhekiswe ukuthi izinkundla zizobhala kahle, futhi uma umbhalo wokuphakama kwezinkundla ubude kakhulu, kuzoba kubhekiswe ukuthi izinkundla zizobhala kahle. Umkhakha wokubhala wasezinkundleni wasebenza ngamaphuzu amaningi kule ndawo, kusukela ekulubhaseni kwesikhathi sokubhala, ukunciphisa ukuthi kubhekiswe ukuthi kubhale kahle, ukuthi kubhekiswe ukuthi izinkundla zizobhala kahle, nokuthi kubhekiswe ukuthi kubhale kahle. Isilinganiso semkhakha wokubhala kanye nezinhlobo zokubhala ziyizinto ezifanele ukuzibheka ngokuchaza kakhulu kulesigaba sokubhala kwezinkundla.

5. Ukuthinteka kokubhala kwezinkundla nokuthinteka kokubhala kwezinkundla

Amaphipe amhlophe kumaphoyinti akhulwe ngemud ayafuna ukuphuma ngoba iphakade yayo iyinkulu kune yemud, ikakhulukazi kumaprojekthi okwenzeka ngamaphipe amaningi kanye nezinsuku zokufihla ezincane. Izisombululo ezijwayelekile ziyincludes ukuthi wubhalela amanzi kumaphipe ngokuphatha ukuze uvule iphakade yakho yokufihla, ukufaka izinkampani zokufihla eziphakathi noma phandle kwamaphipe, noma ukunciphisa isivumo sokuphuma ngokuphathwa kwezinsuku zokufihla nokuphatha kwezinhlobo zokuphatha ngokuphathwa kwezifundo. Isisombululo esithile sifuneka sibhalwe ngokuchaza kwezifundo zomphakathi kanye nezimo zezinsizakaliso.

Okuqukethwe okungenhla kuchaza umqondo oyisisekelo wokwakhiwa kwe-HDD kanye nezici ezibalulekile okufanele zicatshangelwe, okusiza ekunqumeni ukuthi kungenzeka yini ukukhetha izinto zokubumba ipayipi ezigabeni zokuqala zomsebenzi. Amanani athile erediyasi yokugoba, amandla okudonsa avumelekile, amandla okudonsa emuva, kanye nezinhlelo zokulwa nokugqwala kumaphrojekthi wangempela wobunjiniyela kufanele abalwe ngokusemthethweni futhi aqinisekiswe yiphaneli yokuklama efanelekile esekelwe kumazinga kazwelonke nawemboni wamanje, ahlanganiswe nem Lo mbhalo awukwazi ukufaka esikhundleni sokuklanywa kobuchwepheshe.

 

Ukuqhathaniswa kokusetshenziswa kwepayipi le-HDPE ngaphandle kwezikhala namapayipi ajwayelekile

Lapho kukhethwa izinto zokwakha amaphrojekthi angenamgodi, amapayipi e-HDPE anezinzuzo ezihlukile uma eqhathaniswa namapayipi e-PVC, amapayipi wensimbi encibilikisiwe namapayipi wensimbi. Ithebula elingezansi linikeza ukuqhathanisa okufushane okusekelwe ezicini eziningana ezibalulekile zokwakhiwa okungenamgodi, okwenza kube lula ukwahlulela ngokuhambisana nezimo ezithile zomsebenzi:

Izilinganiso Zokuqhathanisa	Isibhalo se-HDPE	Izihluzi ze-PVC	ipayipi lensimbi	ipayiphi lemanqaku
Ukubeka okufanayo/okukhuluma	Kuyakwamukela, kungakhuluma ngalonga kwesikhala sokubhala.	Kubi, ukukhuluma okuncane	Kubi, akukhuluma ngaphandle kokukhuluma	Ibali elibubi, kudinga ukukhuluma okuhle.
Ubukhulu bekugcina (imithwalo yokuqondisa nokususa)	Umhlaba uyabhalwa ngokuphatha kwezinkampani futhi unamandla angaphezu kwalokho kwezinhlobo zemvelo.	Ukubambisana ngokubamba kungadlula ngokuphathwa kwezinkampani.	Isikhumba sesilika sengoma singadlula ngokuphathwa kwezinkampani.	Sinezindaba zokubambisana ezinkulu, kodwa isikhathi sokubambisana esikhathini sakho siningi.
Uhlola Lwesibhedlela	Izinkambo ezinkulu, akukho ukuphatha kwelektrochemikali kufuneka.	kusho kakhulu	Ukubaluleka okubi, kuyafana nokuphatha	Ukubaluleka okubi, kuyasebenza ngokusebenzisa indawo yokuvikela ukuphatha
Umbane / Ukungafani kwezindawo zokuphakama	Kubane, kubizwa ngokugcina 1/8 yombane wemithambo yeziliva	Okuphansi kwezindawo	Biyiyane	Kubanzi, kudinga izinkambo zokuphakama ezingaphezulu
Ukuhambisana kwemithambo emphakathini yezintemperatura ephansi	kahle	Ukuphansi kwemithambo kuyenza ukuba kubane	ngokujwayelekile	kahle
Ukuhlanganiswa kwezindlela zokusebenza ngaphandle kokukhupha umsindo	Kuyasebenza kudrilling yendlela eyodwa, ukubuyisela indawo yamapipingi, nokulungisa indawo yamapipingi ngokufaka amapipingi emva kweminye.	Kusetyenziswa kakhulu ukulungisa indawo yamapipingi ngokufaka amapipingi emva kweminye	Kusetyenziswa ngaphansi kakhulu ekusebenzeni ngaphandle kokukhupha umsindo	Kusetyenziswa kakhulu emizimbeni eyodwa njengekukhupha umsindo yamapipingi ngokuthinteka

 

Ngokujulile, amapipingi ase-HDPE ayisisekelo esihle kakhulu kunezisekelo ze-PVC nezisekelo zezincili ngokuhambisana nokuzimisa, ukubaluleka kwezisekelo, nokuvikela ngokuvikela ngokuvikela, futhi abalula kakhulu kunezisekelo zezinkabi. Kuzoba yisisekelo esihle kakhulu sokusebenza ngaphandle kokukhupha umsindo njenge-drilling yendlela eyodwa nokubuyisela indawo yamapipingi. Amasinga e-PVC ayisetyenziswa kakhulu emizimbeni yokuqondisa njengekuphatha kwezisekelo zezincili zempipini yezindawo ezihlukene, amasinga e-zincili ayisetyenziswa kahle emizimbeni yokuqondisa yezindawo ezihlukene, futhi amasinga e-steel ayisetyenziswa kakhulu emizimbeni yokuqondisa yezindawo ezihlukene noma yiziphi na izimo zokusebenza eziphakeme kakhulu ngokuzimisa, njengekukhupha umsindo yamapipingi ngokuthinteka.

 

Imibuzo Emaninzi (FAQ)

Izisinga ze-HDPE ziyasebenza kuzo wonke izindlela zokusebenza ngaphandle kokukhupha umsindo?

Amaphayipi we-HDPE angakhokhela izintechinoloji zokuphatha ngaphandle kwezindawo ezihlukene, njengoko kufakwa kwendlela yokuqondisa umphakathi ngokuphambana, ukususa amaphayipi asezingeni elihlukile, nokulungisa amaphayipi asezingeni. Kodwa, ukuthi banezinkinga zokusebenza kuzo ngokuphelele kufanele kubhekwe ngokujwayelekile ngokubhekana nezilinganiso zezinkulungwane, izimo zezinsizakaliso, ubunzima bezokuphambana, nokubhalwa kwezimali zomshado. I-HDPE ayisifundiswa ngokuphelele kuzo zonke izimo zokusebenza.

Ukukhetha phakathi kwe-SDR11 no-SDR17 kufanele kwenziwe njani?

Kusho okuncane, izimshado ezenza ukuphambana kwezindawo ezide, okuphambana okukhulu, noma izinkinga zokuphambana okukhulu (njengokuphambana kwezindawo ezide zemifula noma amahighway) ziyasebenza kahle ngokuphambana kwe-SDR11 esikhulu; kodwa izimshado zokunika amanzi emazini ezingeni elikude kancane noma izinkinga zokuphambana ezincane ziyakhetha isikhundla se-SDR17 esinezimali ezincane. Ukukhetha okugcwele kufanele kwenziwe ngokuhlanganisa iziphakamiso zokuphambana nezinhlobo zezimali zaseNingizimu Afrika.

Ubudlelwano obuhle bokusebenza kwezinkulungwane ze-HDPE?

Kusukela kwezimo zokusebenza eziphakade nezimo zokwakha ezizenzakale, umkhakha wokusebenza we-HDPE pipes uyisikhathi esingama-50 eminyaka. Isikhathi sokusebenza sithintana ngokuphakeme ngegradi yomkhakha wempiyipi, umkhakha wokusebenza, nokukhakha kwempiyipi. Kufuneka ukubuka i-standards yamaphrojekthi nezidata zokuzimela.

Ukuthi ukuthenga kwe-HDPE pipe kuchaza kanjani kwe-PVC nezimpiyipi zesiya?

Izimpiyipi ze-HDPE zithengiswa ngokufanayo nezimpiyipi ze-PVC futhi zingaphansi kwezimpiyipi zesiya, kodwa isiphumo sokuthenga esihle kuyasebenza kumsebenzi wokwakha: ziyinkulu, azikho imithombo yokuqondisa okuningi, kunezindlela zokuhlanza ezincane, futhi izikhathi zokwakha ziyisikhathi esincane. Ikhanda lokukhakha lingaphansi kwezimpiyipi zesiya nezimpiyipi zesiya, kodwa ukuthenga okuphelele kufuneka kubhalwe ngokuphakeme kwezilinganiso zomkhakha.

Kuzoba yini izimali zokukhakha kwe-HDPE pipes kumsebenzi wokuhlanza kwe-HDD?

Ukubuyisa kwe-HDD kufuna ukuthi iphayipi ibe ne-ultimate tensile strength, ukuthintana kwe-wear, nokuphambuka kwe-joint. Kufuneka kusebenzise i-hot-melt butt welding connections, ukukhetha ama-SDR angafanele, nokubala i-pullback force kabefore ukwenza umsebenzi ukuze usindisise ukuthi iphayipi ayiphindise i-allowable tensile value yayo.

Yini eyinkimbinkimbi kakhulu ekubhaleni kwe-HDD?

Ukubalwa kwe-anti-buoyancy nokubalwa kwe-minimum bending radius kubabili abayinkimbinkimbi kakhulu emisebenzini yezinhloso: lapho idiameter yephayipi ibe ende futhi ubude bendawo bokufakwa kubincinci, iphayipi engenalo umsindo iyakwazi ukudlula emudini, futhi ukubheka kakhulu kwesikhombiso sokubhulala kungasiza ukuthi iphayipi ibe yisikhombiso sokubhulala. Lezi zimbili izinhloso zifuneka zibalwe ngabadesayina ngokugcina nge-cross-section yomsebenzi nokwakhiwa kwezizwe, akuzoba kuphela ukusiza kwezindlela zokuzijabula ekukhetheni iphayipi.

 

Isiphetho

Izihlazi ze-HDPE, ngokusebenzisa izinkulungwane zazo ezithile njengezinkulungwane zokuziphatha kahle, ubuncinane bekhuphukela, ubukhulu obuncinci, ubukhulu bekhuphukela kwezindawo zokugxilwa, ukuthintana nokuthintana, ubuhle bekhuphukela kwezindawo zokugxilwa, ubuhle bekhuphukela kwezindawo zokugxilwa, nokuthintana nokuthintana kwezindawo zokugxilwa, kubekwe yindlela eyinkulu yokusebenzisa izihlazi kwezindlela zokubhala ngaphandle kwemithambo, ikakhulu ekhethwe kumaqondiso amanji njengezindlela zokubhala ngaphandle kwemithambo, ukubhala ngaphandle kwemithambo kwezindlela zokubhala ngaphandle kwemithambo, nokubhala ngaphandle kwemithambo kwezindlela zokubhala ngaphandle kwemithambo. Ukukhetha izihlazi kukuphakeme kuphela kwezindlela zokubhala ngaphandle kwemithambo; ukubhala ngaphandle kwemithambo kwezindlela zokubhala ngaphandle kwemithambo, ukubhala ngaphandle kwemithambo kwezindlela zokubhala ngaphandle kwemithambo, nokubhala ngaphandle kwemithambo kwezindlela zokubhala ngaphandle kwemithambo kuyizinkinga eziphakeme. Kumaqondiso amanji, kusukela kubhekwa ukukhetha ubukhulu bezihlazi, umbala wokubhala ngaphandle kwemithambo, izimo zezinsizakalo, nobukhulu bekusebenza, kufanele kubeke isikhetho se-SDR nokubhala ngaphandle kwemithambo kuleli qondiso, futhi umthunywa wokubhala ngaphandle kwemithambo othembekile akhethwe ngokuphelele nokubhala ngaphandle kwemithambo ngokuphelele ngokusebenzisa izindlela zokubhala ngaphandle kwemithambo zokubhala ngaphandle kwemithambo ukuze kuvunyelwe ubukhulu bekusebenza nokubhala ngaphandle kwemithambo kwezindlela zokubhala ngaphandle kwemithambo.