He maha nga wa e kii ana matou ko te putorino wera-whanui e pa ana ki te putorino maitai me te iti noa te kiato engari he kaha te whakaheke, ko te Haina National Standards Association e kii ana ko te putorino rino wera-whanui me waiho he putorino maitai rahi-diameter kua whakawhanuihia me te whakaheke i muri i te katoa. whakawera o te putorino maitai kore.. Hangarau roha waiariki ko ki te whakawhānui i te diameter o te putorino i roto i deformation radial, ara, kore-paerewa, tauira motuhake o putorino tuitui ka taea te whakaputa i te whakamahi i paipa paerewa, a he iti te utu me te hanga. he tiketike te whai huatanga. He tikanga tukatuka noa mo nga paipa kore. Na te nui o te whanaketanga o nga kohu hiko me te whanaketanga nui o nga tipu petrochemical, kei te piki haere hoki te hiahia mo nga putorino tuitui nui-diameter, a he uaua ki nga waeine hurihuri paipa ki te whakaputa i te ngongo korekore e nui ake te diameter. 508mm, ōwehenga o waho diameter ki te matotoru pakitara(D/S)>25, hangarau roha waiariki, rawa te āhua-utu whai hua reo auau hangarau roha waiariki kua āta whakawhanakehia te kupu te reira.

 

Ko te whakawhanui paipa e rua-taahiraa e whakamahia ana mo nga putorino rino wera-whaanui e hono ana i te hangarau toronga diameter o te koekoe, te hangarau whakawera whakawera auau takawaenga, me te hangarau waipēhi i roto i te miihini kotahi. Na tona tukanga whaitake, iti te kohi hiko, iti te haumi hanga, me te pai Ko te kounga o te hua, te whānuitanga o nga rauemi mata me nga whakaritenga o nga hua, te ngawari me te iti o te whakauru whakaurunga puranga urutau kua whakakapi i te hangarau toronga diameter kume-momo tuku iho o te umanga paipa maitai. .

 

Me tohu ko nga ahuatanga miihini o nga putorino rino wera-whanui he tino kino atu i nga putorino maitai wera.

 

Ko te tikanga whanui mo te roha wera o te putorino ko te whakatika i te putorino ki runga i te mata o te putorino, ka whakanohohia he paanui o runga ahua koeko me te diameter nui ake i te diameter o te putorino ki tera pito o te putorino, ka hono me te whakatika i tetahi atu. wiri i roto i te paipa. Ko te hononga i waenga i te putorino me te punga o runga kei raro i te porowhita whakawera takawaenga, kia tere rawa ai te whakamahana me te pakaru, me tuku te wai ki roto i te ngongo i te tuatahi, ka timata te whakamahana porowhita, ka tae ki te pāmahana kua tohua. , ko te tira e hono ana i te ngongo e pana ana te ngongo, kia neke te ngongo ki te pae o runga ka toro atu. Ko te taper o runga o runga ka whakanui i te diameter paipa. I muri i te paahitanga o te paipa katoa, kare te paipa e noho tika na te mea o te whakawhanui waiariki, no reira me whakatika e ia.

Ko nga mea o runga ake nei ko te kaupapa taketake o te hangarau roha wera.

 Ko te tikanga e whai ake nei mo te paipa whakawhaawhaa

 

Taumaha whakaroa:

waro maitai: (diameter-te matotoru)× matotoru× 0.02466 = paunat o te mita kotahi (kg)

koranu: (diameter-te matotoru)× matotoru× 0.02483 = taumahakotahi mita (kg)

te maha o nga mita i muri i te toronga wera：

ngongo taketake Diameter÷ wera whakawhānui diameter× 1.04× roa *

 

mita ngongo taketake：

roa whakaroa× (diamita÷ diameter ngongo taketake÷ 1.04)

 

tere:

100000÷ (taketake diameter-te matotoru× matotoru)

 

matotoru:

matotoru whakawhänui (1 wa) ) = Te matotoru ngongo taketake× 0.92

Ko te matotoru whakaroa (2 wa) = Ko te matotoru ngongo taketake * 0.84

 

Diane:

Ko te diameter whanui = te rahi o te pokepokea me te matotoru kua whakawhānuihia× 2

Te rahi o te pokepokea ai: te whanui whanui—2 * taiepa whakawhanui Te matotoru

 

Whakaaetanga Diameter：

Diamita＜426mm, te manawanui±2.5

Diameter426-630mm, te manawanui±3

Diamita＞630mm, te manawanui±5

 

Ellipticity:

Diamita＜426mm, te manawanui±2

Diamita＞426mm, te manawanui±3

 

Mātotoru:

matotoru≤20mm, te manawanui﹢2 ，—1.5

matotoru≤40mm，﹢3 ，—2

Paipa hei hanga paipa paipa

﹢5 ，—0

 

Roto me waho o te rakuraku:

 

Hohonu paraka: 0.2mm, roa:2cm, ka kiia ko te rakuraku. Kaore e whakaaetia

Tika: ≤6 mita, he 5mm te piko，≤12 mita, he 8mm te piko

 

Hei tauira:

Ngongo taketake 610 * 19 wera whakawhānui 660 * 16

Roa paipa taketake:12.84mita

Ko te matotoru whakaroa: 19*0.92=17.48(1 wa)

19*0.84=15.96（2wa）

Roa roa o te paipa:610÷660*1.04*12.84=12.341962

Ko te diameter whakaroa: 625+17.48*2+1=660.96(1wa)

625+15.96*2+1=657.92(2 wā)

 

Rahi Kōwae:660-2*16=628