Ukuqalisa ukufaka phansi okufudumele, umbuzo uphakama ukuthi yiziphi impahla yamapayipi engcono: i-polyethylene noma ipulasitiki.
Impendulo ilele ezimeni zokusebenza kwefudumelana, kanye nemibono yochwepheshe, isipiliyoni nokubuyekezwa kwabantu abasebenza ngezinhlelo zokushisa eziphansi kuzosiza ukubhekana nalolu daba.
Ngokusekelwe cishe kuwo wonke amapayipi anamuhla, ama-polyethylene ahlanganisiwe, kuphela ukwakheka kwamapayipi epulasitiki angenayo engxenyeni yangaphandle neyangaphakathi ye-polyethylene exhumene nensimbi eqinisekisa ukufakwa kwezendlalelo okunama-monolith aqinisekisa i-monolith yomkhiqizo.
I-Stitched Polyethylene: Izakhiwo
Ngenxa yamabhondi angeziwe amangqamuzana amapayipi e-polyethylene anamandla aphezulu
I-polyethylene eqinile isho izinto zobuchwepheshe obuphakeme futhi ukukhiqizwa kwe-polymerization ye-ethylene enezinto ezesakhiwo se-mesh molecular nge-rex ye-abshovation rex.
Ngokwesimo, inqubo yokugaya ukudala okwengeziwe kwamangqamuzana. I-polymer yokuqala ihlotshaniswa nesiphithiphithi ezingeni lamangqamuzana ngamaketanga aseceleni ama-molecule, akha i-grid enezici ezintathu, isakhiwo esiqinile ngokukhethekile 'ngethomu lememori ".
Imikhiqizo ye-Single-Wearl iyakhethwa
Izinguquko ngosayizi nokwakheka kwepayipi ngaphansi kwethonya lemithwalo ngemuva kokususwa kwazo kubuyisele umkhiqizo ngefomu lasekuqaleni. Ngokusho kwezakhiwo zobuchwepheshe, i-Rex ayiphansi kwama-solids amaningi futhi idlula ngaphansi kwempilo yenkonzo.
Amapayipi e-polyethylene athutha akhiqiza izindlela ezi-4:
- I-peroxide yethulwa e-polyethylene ekwenziweni kwezinto ezibonakalayo. Izinga eliphakeme kakhulu lokuwela lingama-75%. Endleleni yokukhiqiza okuphansi kanye nezindleko eziphakeme zomkhiqizo, kepha okuqukethwe kuba nzima kakhulu futhi kunwebekile.
- I-RE -BB - Ukucutshungulwa komswakama ne-khaya kanye ne-catalyst kwakha i-polyethylene, lapho igobolondo lomkhiqizo lingaqinile khona, kepha lapho uketshezi ludlula, lungamelana nengcindezi ephezulu. Ukuthunga kungu-65%.
- I-Rech - C - I-Polymer iphathwe ngama-elektroni. I-Polyethylene eneziqu eziphansi zokuwela ama-55 - 60%.
- I-RH - XD - i-nitric acid iyasetshenziswa. Indlela ayivamile ukusetshenziswa.
Ngezindlela ezifakwe kuhlu, ipayipi elenziwe ngokusetshenziswa kweSilane lifuna kakhulu, libonakaliswa ngentengo efanelekile kanye nezakhiwo ezisebenzayo ezamukelekayo.
Isihloko ngesihloko: Ukulungiswa kodaka olususelwa ku-lime
Okuhle kakhulu kwepayipi elifudumele ye-polyethylene exhumeke ku-polyethylene eyodwa-exhumene nemikhiqizo ye-re-ha kanye ne-re-xb ngesendlalelo sokuvikela, okuyisithiyo sokubhujiswa komoya-mpilo.
Izinzuzo zemikhiqizo ye-polyethylene eqinile
Ipayipi elivela entweni enjalo linememori yamangqamuzana
Amapayipi okushisa akhiqizwa yindlela ye-RE-HA neRe - XB yizimpawu:
- Ukumelana nokucindezela kwengcindezi. Kwindlela yokucindezela okukhulu, impilo yemikhiqizo ayishintshi. I-polymer imelene nengcindezi kuze kube yishumi nanhlanu.
- Imemori ye-Molecular. Lapho amanzi eqhwa epayipini, iqhwa eliphumela landa ububanzi bepayipi, futhi ngemuva kokuncipha iqhwa, usayizi wepayipi ubuyela kuhlobo lwangempela, ngaphandle kokulimaza lokho okuqukethwe.
- Ukuncibilika nokuvutha emazingeni okushisa aphezulu. Izinto ziza zincibilika ekushiseni okungaphezulu kuka-150 ° C, nokulahla lapho izinga lokushisa elikhona lifinyelela ku-400 ° C.
- Ukumelana namakhemikhali nama-biological. I-polyethylene tube ayikhonjelwa kwinqubo yokugqwala, ayidali izimo zokuvela kwesikhunta kanye nokukhiqizwa kwamagciwane, okuqukethwe kumelana ne-chloriya futhi kuhlala kungathathi hlangothi kwamanzi ahlangene.
- Ukuphepha kwemvelo. Izinto ezibonakalayo ngesikhathi sokushisa azenzi izinto eziyingozi futhi zibole kwikhabhoni diokside namanzi lapho bevutha.
I-polyethylene ayengesabi umehluko wokushisa
- Plastice. Ngokugoba okuphindaphindiwe, umkhiqizo awuqhumi futhi uphinde ubuyisele usayizi wokugoba.
- Ukusebenza. I-Polymer Material igcina izakhiwo, zihlala zingaguquki osayizi wepayipi ngamazinga okushisa aguqukayo okupholile kusuka ku-0 kuye ku-95 ° C, kepha impahla iyakwazi ukubekezelela umbuso wokushisa oqinile.
I-Metal Plastic Tube: Izakhiwo
Izinzuzo ze-polyethylene ezixhumene nesiphambano futhi zine-tube yensimbi -pulasitiki equkethe izingqimba ezinhlanu, ngamunye wawo enza imisebenzi ethile. Izendlalelo zangaphandle nezingaphakathi ze-polymeric, kanye ne-polyethylene shell evikelayo zivikela ukulimala kwemishini, futhi ungqimba olubushelelezi lwangaphakathi lunomthelela ekuhambeni okusheshayo koketshezi.
Ungqimba olubushelelezi lwangaphakathi alukha izithiyo zamanje zamanje
Kunezingqimba ezi-2 ezinamathela phakathi kwezendlalelo ze-polymer, naphakathi - ungqimba lwangaphakathi yi-aluminium sheath enikeza ukuqina kwalo lonke umkhiqizo womkhiqizo wensimbi.
Ukwethembeka nokuqina ekusebenzeni kwemikhiqizo yensimbi-yepulasitiki kunquma ikhwalithi yezendlalelo:
- Ungqimba we-aluminium womkhiqizo unquma amandla alo futhi kufanele kube ukushuba okungenani kwe-3 mm. Izindlela ezi-2 zokushiswa kwe-aluminium ungqimba othinta amandla wepayipi, i-laser welding ku-welding ehlanganisiwe kanye ne-ultrasonic we-welding ye-ultrasonic asetshenziswa ngobuchwepheshe. Indlela yokufudumeza ungqimba kaJack ibizwa ngokuthi i-seamless, ayinakho ukuntuleka kokuxineka futhi ngokuqhathaniswa namadevu we-welding awavumeli ukuvuza ezindaweni zokuxhumana.
- I-adhesive esetshenzisiwe inquma isigaxa sezendlalelo esingukushisa okuguqukayo kokuphola, okuthinta namandla wepayipi. Epayipi lokusika lapho usebenzisa i-glue esezingeni eliphakeme, isigaxa asikho.
- Ukwethenjwa kwepayipi kunqunywa ngezendlalelo ze-polymer, i-polymer ene-pex kanye ne-pe-st ukumaka amandla okunika amandla ipayipi, futhi amapayipi anokunye ukubhaliswa asetshenziswa yi-polymer esezingeni eliphansi, kulokhu kuxhumana, ngendoda ye-hydraulic.
Lapho sikhetha ipayipi lensimbi-lensimbi, sibheka ukuthi le mikhiqizo inendlela engenamthungo yokufaka ungqimba lwe-aluminium, ukuhlinzeka ngokwenza umsebenzi.
Ukukhetha amapayipi okuphansi kwamanzi
Zama ukukhetha izinto ezisezingeni eliphakeme
Iziphakamiso eziningi futhi mayelana nomkhiqizo, futhi mayelana nomenzi, kulokhu isenzo isenzo singenye, ukukhetha ifomula kuyintengo engcono kakhulu / ikhwalithi, kepha kuyadingeka ukuqala ngekhwalithi:
- Ukwethenjwa kwamapayipha namandla okusebenza lapho kusetshenziswa ezimweni ezithile, okuzoqinisekisa ukusebenza okuyizinkinga kohlelo ngesikhathi sokusebenza, i.e. Ipayipi kufanele likwazi ukumelana nengcindezi okungenani engu-10 bar.
- Impilo yenkonzo noma ukuqina kokusetshenziswa kohlelo olufudumele lwaphansi kuya kokuqukethwe okwenziwe ngalo umkhiqizo. Ukuguqulwa kwepayipi akuvunyelwe ekushiseni kwe-coolant 95 ° C.
- Ngokuhamba kwamahhala ngamapayipi we-coolant, ingaphakathi lepayipi kufanele libushelelezi.
- Izimo zokulungiswa, izindleko zomsebenzi wokuvimbela kanye nokulawulwa kokulawula kohlelo lokuqina kulungile. Funda kabanzi ukuthi imaphi amapayipi ongawakhetha, abheke kule vidiyo:
Izici zokuqhathanisa zezinhlelo zokushisa ezinikezwa yimakethe, ubunzima bokufaka umsebenzi kanye nezimo zokusebenza kubhekwa ngemuva kokuhlola izici ezisebenzayo. Okokugcina kodwa, siqhathanisa izindleko zemikhiqizo, sithatha umsebenzi wokufaka, kanye nobunzima ngedivaysi efudumele yaphansi efudumele.
Izici zokuqhathanisa zamapayipi anobubanzi obungu-20 mm
| Okokukhonkotha | Amayunithi. phendula | I-Metalplastic I-Waila Trumpet | Ishubhu le-polypropylene |
|---|---|---|---|
| Ukushisa okusebenzayo | Ukusuka | 95. | 95. |
| I-coefficient yokwanda okushisayo | mm / m ° C | 0,026. | 0.024. |
| Ingcindezi yokusebenza | I-MPA | 1,013 | 1.0 |
| Glue i-glue yokuxhuma | N / bheka | 70. | |
| Amandla okuxhumanisa we-aluminium | N / mm2. | 57. | |
| Ubulukhuni beCoeffreeffreefnt | 0.07 | 0.005 | |
| I-coeffred Offectivity of thermal | Mw / cm ° K | 0.45 | 0.41 |
| Ukwehlukaniswa kwe-transverse | N. | I-3050. | |
| Ukunwebeka Amandla | I-MPA | 20.6 |
Ipulasitiki yensimbi ayinapulasitiki encane uma iqhathaniswe ne-polyethylene eyenziwe
Okufanayo, ukuthi ipayipi elingcono lingcono yini ngesendlalelo esifudumele: i-polyethylene noma i-metalplastic. Umehluko wemikhiqizo ezingxenyeni ze-polyethylene ye-crossled yepayipi epulasitiki yensimbi kanye nongqimba lwensimbi.
Ukuthuthukisa i-polymer, ososayensi kanye nochwepheshe emkhakheni wamakhemikhali bakwazile ukuguqula i-polyethylene ngegama elijwayelekile ngegama elijwayelekile pe - rt, lapho kwakhiwa isakhiwo samangqamuzana. I-polymer ayilahli izakhiwo zayo ekuvuseleleni kabusha, ngokungafani nabanduleli. Iziphakamiso zochwepheshe ekukhetheni kwamapayipi zibona kule vidiyo:
Amapayipi avela ku-PE - Rt polyethylene enekhanda eliqinile le-coolant uhlukanisa umsindo wokugeleza koketshezi. I-polymer idlula kakhulu ukumelana ne-polyethylene eyakhiwe ngaphambili ekucindezelweni okuphezulu kanye nokushisa kwe-coolant, kanye nesikhathi sepayipi.
Ngenxa yesakhiwo samangqamuzana esinezibopho ezinamagatsha, izinto ze-PE zigcina i-thermoplasticity, amapayipi angathengiswa futhi afakwe ngaphandle kokukhipha izindawo ezilimele.
Izinto ezibonakalayo zibekezelela isithwathwa esiningi kanye nemijikelezo ethambile ngaphandle kokushintsha ukwakheka nezakhiwo. Imikhiqizo ye-PE-RT ikhiqiza imikhiqizo ye-polymeric kanye nensimbi-ipulasitiki.
I-PE evimbela ukushisa - i-RT polymer ezindaweni zayo ihlangabezana ngokugcwele izidingo zesitezi esifudumele futhi ingabhekwa njengenketho enhle kakhulu lapho ukhetha amapayipi.
Isihloko ngesihloko: Izingcingo zedivayisi kuvulandi