isicelo

Ipayipi le-PVC eliqinile kanye nokufakwa kwamapayipi kuwumkhuba okhula ngokushesha emikhiqizweni eminingi ye-PVC ezweni lakithi, futhi iwuhlobo olusetshenziswa kakhulu lwamapayipi epulasitiki.Ngemva kokumenyezelwa nokukhuthazwa kwepayipi le-PVC ezweni lakithi eminyakeni yamuva, ikakhulukazi ukusekelwa kwezinqubomgomo zikazwelonke ezifanele, ukukhiqizwa nokusetshenziswa kwepayipi le-PVC kwenze intuthuko enkulu.Ukukhiqizwa kwepayipi le-PVC kubalele ngaphezu kuka-50% wengqikithi yokukhiqizwa kwamapayipi epulasitiki.Isetshenziswa kabanzi ezimbonini eziningi, njengezimboni, ezokwakha, ezolimo nokunye.

Ukuthuthukiswa kwepayipi le-PVC

1. Izinzuzo zepayipi le-PVC

Ekukhiqizeni i-universal resin, i-PVC resin inokusetshenziswa okuphansi kwe-ethylene kanye nezindleko zokukhiqiza eziphansi kakhulu.Ukusetshenziswa kwe-ethylene ngethani le-PVC ekukhiqizweni kwasekhaya kungamathani angu-0.5314, kanti isilinganiso sokusetshenziswa kwe-ethylene ngethani le-polyethylene singamathani angu-1.042.Ukusetshenziswa kwe-ethylene ngethani le-PVC resin e-China cishe kungaphansi kwama-50% kune-polyethylene.Igesi ye-chlorine eluhlaza esetshenziswa ekukhiqizeni i-PVC iyindlela ebalulekile yokulinganisa ukukhiqizwa kwe-caustic soda ukukhiqiza igesi ye-chlorine.I-Caustic soda iyimpahla eluhlaza ebaluleke kakhulu emnothweni wezwe.Ngaphezu kwalokho, kusukela ekubukeni kwemikhiqizo yepulasitiki, i-PVC inokuhambisana okuhle nabasizi abahlukahlukene, futhi inani elikhulu lama-fillers ashibhile lingangezwa ekukhiqizeni amapayipi, ukuze izindleko zokukhiqiza zinciphise kakhulu.

Uma kuqhathaniswa namapayipi ensimbi, ukukhiqizwa kwepayipi le-PVC nge-cubic meter ngayinye ye-PVC nokukhiqizwa kwe-cubic meter ngayinye yensimbi ne-aluminium yokubala, ukusetshenziswa kwamandla ensimbi kungu-316KJ/m3, ukusetshenziswa kwamandla kwe-aluminium yi-619KJ/m3, ukusetshenziswa kwamandla kwe-PVC kungu-70KJ/m3, okungukuthi , ukusetshenziswa kwamandla ensimbi izikhathi ezingu-4.5 ze-PVC, ukusetshenziswa kwamandla kwe-aluminium izikhathi ezingu-8.8 ze-PVC.Futhi ukukhiqizwa kwepayipi le-PVC lokucutshungulwa kokusetshenziswa kwamandla kuyingxenye eyodwa kwezintathu yepayipi lensimbi elifanayo.Ngesikhathi esifanayo, ngenxa yodonga olubushelelezi lwepayipi le-PVC, akukho isimila sokugqwala, ukusebenza kahle kokulethwa kwamanzi, ukumnika kungasindisa cishe u-20% kagesi.

Ipayipi le-PVC linezici ezinhle zemishini, futhi linokumelana nokugqwala okuhle kakhulu, isisindo esilula lapho sisetshenziswa, ukufakwa okulula, akudingi ukugcinwa, kanye nokusetshenziswa kwensimbi yepayipi lokuhambisa indle yobunjiniyela, lapho lisetshenziswa ngenxa yokugqwala okulula, kumele ngokuvamile camera ngopende, high izindleko nokugcinwa.Ukwakhiwa okujwayelekile kanye nemisebenzi yomphakathi ngamapayipi ensimbi cishe iminyaka engu-20 idinga ukushintshwa, kanye nendima yokucubungula okuhle kwamapayipi e-PVC, impilo yesevisi yeminyaka engama-50.Ngakho-ke, ipayipi le-PVC liwumkhiqizo omuhle wepulasitiki onezindleko eziphansi zokukhiqiza, amandla aphezulu kanye nokumelana nokugqwala.

Ngokuvamile, mayelana namapayipi endle, amanzi angcolile kanye namapayipi okungenisa umoya, amapayipi e-PVC asindisa cishe u-16-37% wezindleko zokufaka kanye nezindleko zokusebenza kunamapayipi ensimbi.Izindleko zokwenza i-conductor tube ingaphansi kuka-30-33% kunokusebenzisa umkhono womqhubi wensimbi.Isenzo sepayipi le-polyvinyl chloride (PVC) ene-chlorine emanzini abandayo nashisayo, uma kuqhathaniswa nokusetshenziswa kwepayipi le-copper elinosayizi ofanayo kubiza ukonga okungama-23-44%.Ngakho-ke, ngenxa yezinzuzo zepayipi le-PVC, amazwe athuthukisa ngenkuthalo futhi akhuthaze ipayipi le-PVC.

2. Ukukhiqizwa nokusetshenziswa kwepayipi le-PVC

Kusukela ngesikhathi se-80, izwe lethu lethule amamodeli ahlukene we-PVC pipe extrusion line production eyinkulungwane.Njengamanje, izwe lethu i-UPVC (i-PVC eqinile) yokukhiqiza ipayipi kanye nemishini yokufakwa kwamapayipi inezimboni ezingaphezu kuka-600, isamba sokukhiqiza amathani ayizigidi eziyi-1.1 ngonyaka ngaphezulu, kunabakhiqizi abangaphezu kuka-30 abanesilinganiso sokukhiqiza samathani ayi-10,000 / ngonyaka, bakhona. abakhiqizi abangaphezu kuka-60 abanesilinganiso samathani angu-0.5-10,000/ngonyaka, izinto zokukhiqiza zepayipi le-UPVC nokufakwa kwamapayipi kukhiqizwa ngokuyisisekelo kukhiqizwa ekhaya.

EZWENI LETHU, Ipayipi le-PVC LATHUTHUKISWA kusenesikhathi kunepayipi le-PE ne-PP IPIPE, kunezinhlobonhlobo eziningi, ukusebenza okuhle kakhulu, ukusetshenziswa okubanzi, okunesikhundla esibalulekile emakethe.Ekupheleni kuka-1999, kwase kunemigqa yokukhiqiza amapayipi epulasitiki angaphezu kuka-2000 eShayina, lapho imishini evela kwamanye amazwe yabalelwa ku-15%.Amandla okukhiqiza amapayipi epulasitiki ahlukahlukene ezweni lethu ngo-1999 ayengaphezu kwamathani ayizigidi eziyi-1.65/ngonyaka, umphumela wangempela wamathani angaba ngu-1,000,000, lapho amapayipi e-UPVC abalelwa ngaphezu kwama-50%.

Ngokuhamba kweminyaka, isicelo semakethe ye-PVC emhlabeni, imakethe yezinto zokwakha inkulu kakhulu, futhi isivinini esikhula ngokushesha.Eminyakeni yamuva nje, imikhiqizo yezinto zokwakha yaseMelika ibalwa ku-60% wemikhiqizo yayo yonke, i-62% eNtshonalanga Yurophu, i-50% eJapane, kodwa ngaphansi kuka-30% ezweni lethu, enendawo enkulu yokukhuphuka.Emikhiqizweni yezinto zokwakha, ikakhulukazi kumapayipi kanye nephrofayili, okubandakanya ipayipi lamanzi lokuya phezulu naphansi, ipayipi lokunisela ngezolimo, ipayipi legesi, ipayipi likawoyela ongahluziwe nokunye.

Ukukhiqizwa kanye nokusetshenziswa kwepayipi le-UPVC ezweni lakithi kuqala ukuthuthuka ngokushesha ngesikhathi soHlelo Lweminyaka Eyisishiyagalolunye Lweminyaka Emihlanu, oluzuza kakhulu ekwesekeni okuqinile kukahulumeni kanye nokuqonda komphakathi impahla yamapayipi e-UPVC.

Njengamanje, ukusetshenziswa kwe-plastic tube ezweni lakithi kuye kwathuthukiswa kakhulu hhayi nje ngobuningi kodwa futhi ngezinhlobonhlobo kanye nokucaciswa.Isibonelo, ipayipi le-UPVC selifinyelele ngaphezu kwama-90% ekufakweni kwepayipi kwamanye amadolobha, futhi iningi lamabhizinisi amapayipi e-UPVC anezinzuzo ezinhle kakhulu eminyakeni yamuva.

Ngesikhathi soHlelo Lweminyaka Eyishumi Lweminyaka Emihlanu, ukukhuthazwa nokusetshenziswa kwamapayipi epulasitiki ikakhulukazi amapayipi epulasitiki e-UPVC kanye ne-PE, kanti amanye amapayipi epulasitiki amasha athuthukiswa ngamandla.Ngonyaka wezi-2005, ezinhlelweni ezintsha zokwakhiwa, ukwakhiwa kabusha kanye nokwandisa ezweni lonke, u-50% wamapayipi okukhipha amanzi okwakha azosebenzisa amapayipi epulasitiki, ama-20% amapayipi okudonsa amanzi asemadolobheni azosebenzisa amapayipi epulasitiki, amaphesenti angama-60 amanzi okwakha, amanzi ashisayo kanye namapayipi okufudumeza. athathe amapayipi epulasitiki, 50% wamapayipi amanzi asemadolobheni (Dn400 noma ngaphansi) azothatha amapayipi epulasitiki, 60% amapayipi amanzi emzaneni azothatha amapayipi epulasitiki, Ipayipi legesi yasemadolobheni (ipayipi eliphakathi nendawo eliphansi) 50% sebenzisa ipayipi lepulasitiki, ukwakha Umkhono wokulutha ngocingo 80% usebenzisa ipayipi lepulasitiki.Kulindeleke ukuthi isidingo samapayipi epulasitiki ngo-2005 sibe ngaphezu kwamathani ayizigidi ezimbili, iningi lawo okungamapayipi ePVC.

Emazweni athuthukile, ukusetshenziswa kwepayipi le-PVC ngokuvamile kubala ama-70-80% emakethe yamapayipi epulasitiki, kodwa ipayipi laseShayina le-PVC libalelwa kuphela cishe ama-50% yenani eliphelele lamapayipi epulasitiki, amandla okuthuthukiswa kwepayipi le-PVC ezweni lethu enkulu kakhulu.Ingxenye esetshenziswayo yamapayipi e-PVC emazweni asethuthukile imi kanje: amapayipi okuphakela amanzi angu-33%, amapayipi endle angu-22.3%, amapayipi endle angu-15.7%, amapayipi okunisela angu-5.2%, amapayipi egesi angu-0.8%, amanye amapayipi enza ama-22.7%.Phakathi kwabo, isilinganiso sokusetshenziswa kokufakwa kwamapayipi kanye nepayipi cishe yi-1: 8.

Emakethe yokwakha, kunezinhlobo ezimbili zamapayipi e-PVC asetshenzisiwe: eyodwa iyipayipi elimelana nokucindezela, kanti enye ipayipi elingacindezeli.Ipayipi lensimbi elisansimbi kanye nepayipi lethusi elalisetshenziswa esikhathini esidlule njengezinto zokwakha ezimelana nokucindezela, hhayi nje ukugqwala okukhulu, kodwa futhi kudinga ukulungiswa njalo nokushintshwa, izindleko eziphezulu.Izakhiwo zakwamanye amazwe manje sezisetshenziswa kabanzi ngamapayipi amanzi anomfutho, ipayipi lamanzi ashisayo lisebenzisa ipayipi le-PVC.Ipayipi le-PVC elisezingeni elincane (ipayipi le-UPVC, ipayipi le-CPVC) linezinzuzo zezindleko eziphansi, ukumelana nokugqwala, futhi akudingi ukunakekelwa njalo nokushintshwa.Futhi ububanzi obukhulu PVC ipayipi ingcindezi (ububanzi ngo 100-900mm) esikhundleni cast iron ipayipi, ngcono ipayipi elincane lodaka, uhlelo lokuphakela amanzi has liquidity omuhle, ukugqwala ukumelana, isisindo low.Ukonga ugesi, izinga elihle lamanzi.Ipayipi legwebu eliwumgogodla we-PVC elingacindezeli njengepayipi lendle elisendlini kanye nepayipi lesistimu yamanzi emvula, lingaxazulula inkinga yomsindo wepayipi lepayipi lendle.Ipayipi lokukhucululwa kwendle lobunjiniyela bomphakathi lithatha ipayipi le-PVC elingacindezeli, ukumelana nokugqwala, hhayi ngokuguguleka kwe-hydrogen sulfide, impilo ende yesevisi, isisindo esilula, izindleko zokufaka eziphansi, ukuxhuma kalula nokuvala, akulula ukuphuka.

Ngaphezu kwalokho, ipayipi locingo lokwakha kanye nepayipi lekhebula elingaphansi komhlaba kungenye imakethe yamapayipi e-PVC, izinhlobo zasekhaya zamanje ziyipayipi elinwetshiwe eliqondile, ipayipi eliphindwe kabili lodonga kanye nezinsimbi zodonga olulodwa.

Ipayipi lezolimo ingenye insimu ebanzi yokusetshenziswa kwePVC.Izwe lethu lingelezwe elintula imithombo yamanzi, okwamanje, izindawo eziningi zokulima ezweni lethu zisasebenzisa ukuchelela komhlabathi, futhi ukuchithwa kwamanzi kubi kakhulu.Ngenxa yokuntuleka kwamanzi, indawo eningi yokulima ayiniselwa kahle futhi nesivuno sezitshalo sincane.Futhi ngokunisela ngepayipi le-PVC, kungonga amanzi angaba ngu-50%.Ukusetshenziswa kokutshala kwesistimu yokunisela ye-PVC engaguquki noma engaguquki, akugcini nje ukonga amanzi, kodwa futhi kuthuthukisa isivuno, ukugqwala kwemishini kanye nezinye izinzuzo, konga kakhulu izindleko zokuchelela kanye nezindawo zokufafaza.Njengamanje, asikho isifunda esiphelele sokunisela kwamapayipi aqinile ezweni lethu, izindawo eziningi zezwe zisantula ukuqonda okuyisisekelo kokunisela kwamapayipi, ngakho-ke, ukwandisa ukumemezela nokukhuthazwa kokunisela kwepayipi le-PVC ezindaweni zasemaphandleni, amandla ayo makhulu kakhulu. .

3. Amanye amapayipi e-PVC avame ukusetshenziswa eShayina

Ishubhu le-UPVC: Ukusetshenziswa okukhulu kweshubhu le-UPVC imboni yezokwakha.Njengamanje, isetshenziswa kakhulu ohlelweni lwamapayipi amanzi kampompi kanye namapayipi amanzi okuhlala kuzo zonke izifundazwe namadolobha ezweni lonke, futhi isetshenziswa kakhulu embonini yezokwakha njengamapayipi okukhipha amanzi, amapayipi emvula kanye namapayipi okuxhuma.Ishubhu le-UPVC linokumelana nokugqwala kwamakhemikhali, ukuzicisha ngokwazo kanye ne-flame retardant, ukumelana nesimo esihle, udonga lwangaphakathi olubushelelezi, ukusebenza kahle kukagesi, kodwa ukuqina kweshubhu le-UPVC liphansi, i-coefficient yomugqa yokwandisa inkulu, ibanga lokushisa elincane.Uma kuqhathaniswa nepayipi lensimbi, ukukhiqizwa nokusetshenziswa kwepayipi le-UPVC kungonga u-55-68% wamandla, futhi uma kuqhathaniswa nepayipi elinothayela, ukukhiqizwa nokusetshenziswa kwepayipi lokuphakela amanzi le-UPVC kungonga u-62-75% wamandla, futhi intengo ubude beyunithi bencazelo efanayo buyingxenye kuphela yepayipi likathayela, futhi izindleko zokufakwa zingaphansi ngo-70% kunepayipi likathayela.Ukusebenzisa ithani elingu-1 lepayipi lokuphakela amanzi le-UPVC kungashintsha amathani ayi-12 epayipi lensimbi ewugqinsi.Ithani elilodwa lamabhongo e-UPVC lingonga amathani angama-25 ensimbi.

Ishubhu legwebu le-core layer: Ishubhu legwebu eliwuhlaka oluwumgogodla wuhlobo olusha lweshubhu elinezingqimba zangaphakathi nezingaphandle ezikhiqizwe inqubo yokukhishwa ngokubambisana kwezendlalelo ezintathu, efana neshubhu elivamile le-UPVC.Phakathi nendawo kukhona ungqimba oluphansi lwegwebu elinobukhulu obuyi-0.7-0.9.Ukuqina kwayo kwe-annular kuphindwe izikhathi ezingu-8 kuneshubhu elivamile le-UPVC, futhi inokuqina okuhle kanye nokushisa lapho izinga lokushisa lishintsha.Ifaneleka kakhulu ohlelweni lokudonsa amanzi okwakha asezingeni eliphezulu.

Uma kuqhathaniswa neshubhu yodonga oluqinile, ishubhu le-foam core layer lingasindisa ngaphezu kuka-25% wezinto ezingavuthiwe, futhi amandla okucindezela odonga lwangaphakathi athuthukiswa kakhulu.Odongeni lwangaphakathi lweshubhu le-foam silencer eliwumgogodla elinemigqa eminingi ye-convex helical, amanzi eduze kodonga lwangaphakathi lweshubhu ukugeleza okuqhubekayo okuvunguzayo, okwenza ikholomu yomoya phakathi nendawo yepayipi lokudonsa amanzi, ukuze umfutho ungene. ipayipi incishiswa ngo-10%, umthamo jikelele ukhuphuka izikhathi ezingu-10, ukufuduka kwanda izikhathi ezingu-6, umsindo ungaphansi kuka-30-40db kunepayipi evamile yokukhipha i-UPVC.

Ipayipi eliqinisiwe le-PVC radial: Ukukhiqizwa kwaleli payipi kusetshenziswa isikhunta esikhethekile kanye nedivayisi yokulandela yokulibumba, kuwuhlobo olusindayo lwepayipi lokusanhlamvu eliyingilazi eliyindandatho eliqiniswe kakhulu.Ibonakala ngokuqiniswa kwe-radial odongeni lwangaphandle lwepayipi, olungathuthukisa kakhulu ukuqina namandla okucindezela kwendandatho yepayipi.Ifaneleka ngokukhethekile ukuthuthwa kwamanzi kubunjiniyela bakamasipala.

Izivunguvungu ezinodonga oluphindwe kabili: izimbongolo ezinodonga oluphindwe kabili zenziwa ngokukhipha amashubhu amabili agxilile ngesikhathi esisodwa bese kushiselwa ishubhu elingaphandle lokuvuthela eshubhuni lethusi elinodonga lwangaphakathi olubushelelezi.Ngodonga lwangaphakathi olubushelelezi nodonga olungaphandle lukathayela, isisindo esilula namandla aphezulu, uma kuqhathaniswa ne-tube evamile ye-UPVC ingasindisa u-40-60% wezinto zokusetshenziswa, ikakhulukazi ezisetshenziselwa ipayipi lekhebula lokuxhumana, ipayipi lokukhipha ipayipi kanye nepayipi lokudonsa amanzi.

Isikhathi se-PVC ngokusebenzisa ipayipi eliqinisiwe: ngezingqimba ezimbili zangaphakathi nangaphandle zokubunjwa kwe-plastic extrusion, ezihlanganiswe ne-synthetic fiber, ukuguquguquka okuhle, zingagotshwa.Ipayipi esobala le-PVC linokumelana okuhle kwe-asidi, ukumelana ne-alkali, ukumelana nowoyela, ukumelana nokuguga, kungashintsha ipayipi lenjoloba, futhi intengo ishibhile.Isetshenziswa kakhulu ku-nitrogen, i-oxygen, i-carbon monoxide namanye amagesi namanzi, i-alkali ehlanjululwayo, uwoyela kanye nezinye izinto zokuhamba uketshezi, futhi ingasetshenziswa njengesifudumezi samanzi, isifutho, i-gas cooker conduit.

Ipayipi le-CPVC: Ipayipi le-CPVC luhlobo lwepayipi lepulasitiki elikwazi ukumelana nokushisa, elicutshungulwa yi-polyvinyl chloride ene-chlorine ene-chlorine engaphezu kuka-66%.Izinga lokushisa elimelana nokushisa lepayipi le-CPVC lingaphezulu kuka-30℃ ngaphezu kwepayipi le-UPVC, futhi ukuzinza kwe-dimensional kuyathuthukiswa, futhi i-coefficient yomugqa yokwandisa iyancishiswa.I-CPVC tube inokumelana nokushisa okuhle kakhulu, ukumelana nokuguga, ukumelana nokugqwala kwamakhemikhali, akukho deformation emanzini abilayo, ingasetshenziselwa amanzi ashisayo, uketshezi olumelana nokugqwala kanye nokuthuthwa kwegesi.