Ububanzi obujwayelekile kanye nobubanzi bangaphakathi nangaphandle bepayipi lensimbi elijikelezayo

Ipayipi lensimbi elijikelezayouhlobo lwepayipi lensimbi elenziwe ngokugoqa umucu wensimbi ube yisimo sepayipi nge-engeli ethile ejikelezayo (i-engeli yokwakha) bese uyishisela. Isetshenziswa kabanzi ezinhlelweni zamapayipi okudlulisa uwoyela, igesi yemvelo kanye namanzi.

 
Ububanzi Obujwayelekile (i-DN)
Ububanzi obujwayelekile bubhekisela kububanzi obujwayelekile bepayipi, okuyinani elilinganiselwe lobukhulu bepayipi. Kupayipi lensimbi elijikelezayo, ububanzi obujwayelekile buvame ukusondela, kodwa abulingani, nobubanzi bangempela bangaphakathi noma bangaphandle.
Ngokuvamile ivezwa yi-DN kanye nenombolo, njenge-DN200, okubonisa ukuthi ububanzi obujwayelekile buyipayipi lensimbi elingu-200 mm.
Ububanzi obujwayelekile bobubanzi obujwayelekile (i-DN):
1. Ububanzi obuncane (DN100 - DN300):
DN100 (amasentimitha angu-4)
DN150 (amasentimitha angu-6)
I-DN200 (amasentimitha angu-8)
I-DN250 (amasentimitha angu-10)
I-DN300 (amasentimitha angu-12)

2. Ububanzi obuphakathi nendawo (DN350 - DN700):
I-DN350 (amasentimitha angu-14)
I-DN400 (amasentimitha angu-16)
I-DN450 (amasentimitha angu-18)
I-DN500 (amasentimitha angu-20)
I-DN600 (amasentimitha angu-24)
I-DN700 (amasentimitha angu-28)

3. Ububanzi obukhulu (DN750 - DN1200):
DN750 (amasentimitha angu-30)
I-DN800 (amasentimitha angu-32)
I-DN900 (amasentimitha angu-36)
DN1000 (amasentimitha angu-40)
I-DN1100 (amasentimitha angu-44)
I-DN1200 (amasentimitha angu-48)

4. Ububanzi obukhulu kakhulu (DN1300 nangaphezulu):
I-DN1300 (amasentimitha angu-52)
I-DN1400 (amasentimitha angu-56)
DN1500 (amasentimitha angu-60)
I-DN1600 (amasentimitha angu-64)
I-DN1800 (amasentimitha angu-72)
I-DN2000 (amasentimitha angu-80)
I-DN2200 (amasentimitha angu-88)
I-DN2400 (amasentimitha angu-96)
I-DN2600 (amasentimitha angu-104)
I-DN2800 (amasentimitha angu-112)
I-DN3000 (amasentimitha angu-120)

I-OD kanye ne-ID
Ububanzi Bangaphandle (OD):
I-OD ububanzi bomphezulu wangaphandle wepayipi lensimbi elijikelezayo. I-OD yepayipi lensimbi elijikelezayo ubukhulu bangempela bengaphandle lepayipi.
I-OD ingatholakala ngokulinganisa kwangempela futhi ivame ukulinganiswa ngamamilimitha (mm).
Ububanzi Bangaphakathi (ID):
I-ID ububanzi bomphezulu wangaphakathi wepayipi lensimbi elijikelezayo. I-ID ubukhulu bangempela bengaphakathi lepayipi.
I-ID ivame ukubalwa kusukela ku-OD kususwe kabili ubukhulu bodonga ngamamilimitha (mm).
ID=OD-2×ukujiya kodonga

Izinhlelo zokusebenza ezijwayelekile
Amapayipi ensimbi ajikelezayo anobubanzi obuhlukile anezinhlelo zokusebenza ezahlukene emikhakheni ehlukahlukene:
1. Ipayipi lensimbi elijikelezayo elincane elinobubanzi obuncane (DN100 - DN300):
Isetshenziswa kakhulu kwezobunjiniyela bukamasipala kumapayipi okuhambisa amanzi, amapayipi okudonsa amanzi, amapayipi egesi, njll.

2. ipayipi lensimbi elijikelezayo elinobubanzi obuphakathi (DN350-DN700): lisetshenziswa kabanzi epayipini likawoyela, igesi yemvelo kanye nepayipi lamanzi lezimboni.

3. ipayipi lensimbi elijikelezayo elinobubanzi obukhulu(DN750 - DN1200): isetshenziswa kumaphrojekthi okudlulisa amanzi amabanga amade, amapayipi kawoyela, amaphrojekthi amakhulu ezimboni, njengokuthutha okuphakathi nendawo.

4. ipayipi lensimbi elijikelezayo elinobubanzi obukhulu kakhulu (i-DN1300 nangaphezulu): elisetshenziswa kakhulu kumaphrojekthi amanzi, uwoyela negesi ahamba ibanga elide, amapayipi angaphansi kwamanzi kanye neminye imisebenzi yengqalasizinda emikhulu.

Izindinganiso kanye nemigomo
Ububanzi obujwayelekile kanye nezinye izici zepayipi lensimbi elijikelezayo ngokuvamile kukhiqizwa ngokuhambisana nezindinganiso nezindinganiso ezifanele, njenge:
1. Izindinganiso zomhlaba wonke:
I-API 5L: kusebenza epayipini lensimbi lokuthuthwa kwamapayipi, ichaza ubukhulu nezidingo zezinto zokwakha ipayipi lensimbi elijikelezayo.
I-ASTM A252: isebenza epayipini lensimbi lesakhiwo, ubukhulu bepayipi lensimbi elijikelezayo kanye nezidingo zokukhiqiza.

 

2. Izinga Likazwelonke:
I-GB/T 9711: esebenza kumapayipi ensimbi ekuthuthweni kwemboni kawoyela negesi, icacisa izidingo zobuchwepheshe zamapayipi ensimbi ajikelezayo.
I-GB/T 3091: isebenza ekuthuthweni koketshezi olunomfutho ophansi ngepayipi lensimbi elihlanganisiwe, icacisa usayizi wepayipi lensimbi elijikelezayo kanye nezidingo zobuchwepheshe.