Sivame ukusho ukuthi ipayipi elishisayo elinwetshiwe libhekisela epayipini lensimbi elinobukhulu obuphansi kodwa obuqinile, i-China National Standards Association ibeka ukuthi ipayipi lensimbi elinwetshiwe elishisayo kufanele libe ipayipi elikhulu lensimbi elinwetshiwe elinwetshiwe futhi likhubazekile ngemva kokushisisa jikelele kwepayipi lensimbi elingenalutho. amapayipi angakhiqizwa kusetshenziswa amapayipi ajwayelekile, futhi izindleko ziphansi futhi ukusebenza kahle kokukhiqiza kuphezulu. Kuyindlela evamile yokucubungula yamapayipi angenamthungo. Ngenxa yokuthuthukiswa kwepharamitha ephezulu yama-boilers wezitshalo zamandla kanye nokuthuthukiswa okukhulu kwezitshalo ze-petrochemical, isidingo samapayipi angenamthungo anobubanzi obukhulu siyakhula, futhi kunzima ngamayunithi okugoqa amapayipi ukukhiqiza ishubhu elingenamthungo elinobubanzi obungaphezu kuka-508mm, isilinganiso sobubanzi obungaphandle kuya ukushuba odongeni (D/S)> 25, ukuthuthukiswa kwezindleko ezishisayo zokwandisa imvamisa, ikakhulukazi ubuchwepheshe bokukhulisa imvamisa, ikakhulukazi. yona.

 

Isandisi sepayipi esidonsayo esinezinyathelo ezimbili esisetshenziselwa amapayipi ensimbi anwetshiwe ashisayo sihlanganisa ubuchwepheshe bokunwetshwa kwe-cone die diameter, ubuchwepheshe bokushisisa be-digital intermediate frequency induction, kanye nobuchwepheshe be-hydraulic emshinini owodwa. Ngenqubo yayo enengqondo, ukusetshenziswa kwamandla okuphansi, ukutshalwa kwezimali okuphansi kokwakhiwa, kanye nokuhle Izinga lomkhiqizo, inhlobonhlobo yezinto ezingavuthiwe kanye nokucaciswa komkhiqizo, ukuguquguquka nokuguquguquka kweqoqo lokukhiqiza okokufaka okuphansi kuthathe indawo yobuchwepheshe bokukhulisa ububanzi bohlobo lokudonsa embonini yamapayipi ensimbi.

 

Kumele kuqashelwe ukuthi izakhiwo zemishini zamapayipi ensimbi anwetshiwe ashisayo ngokuvamile zimbi kakhulu kunamapayipi ensimbi ashisayo.

 

Inqubo evamile yokunwetshwa okushisayo kwepayipi ukulungisa ipayipi kusikulufu somthofu, beka i-anvil ephezulu emise okwekhoni enobubanzi obungaphezu kobubanzi bepayipi komunye umkhawulo wepayipi, bese uxhuma futhi ulungise esinye isikulufu epayipini. Ukuxhumana phakathi kwepayipi ne-anvil ephezulu kungaphansi kwekhoyili yokushisisa ifrikhwensi emaphakathi, ukuze umelane nokushisisa ngokushesha kakhulu futhi uqhume, udinga ukudlulisa amanzi eshubhuni kuqala, uqale ukufudumeza ikhoyili, futhi ngemva kokufinyelela izinga lokushisa elibekiwe, isikulufu esixhuma ishubhu siphusha ishubhu, ukuze ishubhu liye ngasesifubeni esiphezulu futhi liyanwebeka. I-anvil taper ephezulu ikhulisa ububanzi bepayipi. Ngemva kokudlula kwepayipi lonke, ipayipi ngeke iqonde ngenxa yenqubo yokwandisa ukushisa, ngakho udinga ukuyiqondisa.

Okungenhla okuqukethwe okuyisisekelo kobuchwepheshe bokwandisa okushisayo.

 Okulandelayo ifomula efanele yepayipi elinwetshiwe elishisayo

 

Isisindo esinwetshiwe:

carbon steel: (ububanzi-ubukhulu)× ukujiya× 0.02466 = isisindot yemitha elilodwa(kg)

ingxubevange: (ububanzi-ubukhulu)× ukujiya× 0.02483 = isisindoimitha eyodwa (kg)

inani lamamitha ngemuva kokushisa okunwetshiwe:

I-tube Diameter yangempela÷ ukushisa okunwetshiwe ububanzi× 1.04× ubude *

 

original tube metres:

ubude obunwetshiwe× (ububanzi÷ ubukhulu beshubhu yasekuqaleni÷ 1.04)

 

isivinini:

100000÷ (ubukhulu boqobo-ubukhulu× ubukhulu)

 

ukujiya:

ukujiya okunwetshiwe (isikhathi esingu-1) ) = Ukujiya kweshubhu langempela× 0.92

Ukujiya okunwetshiwe (izikhathi ezi-2) = ukujiya kweshubhu kwangempela*0.84

 

Ububanzi :

Ububanzi obunwetshiwe = usayizi wesikhunta + ukujiya okunwetshiwe× 2

Usayizi wesikhunta: ububanzi obunwetshiwe-2 * izindonga ezinwetshiwe Ukushuba

 

Ukubekezelelana kobubanzi:

Ububanzi＜426mm, ukubekezelelana±2.5

Ububanzi 426-630mm, ukubekezelelana±3

Ububanzi＞630mm, ukubekezelelana±5

 

I-ellipality:

Ububanzi＜426mm, ukubekezelelana±2

Ububanzi＞426mm, ukubekezelelana±3

 

Ubukhulu:

ukujiya≤20mm, ukubekezelelana﹢2 ,-1.5

ukujiya≤40mm﹢3 ,-2

Ipayipi lokufaka ipayipi

﹢5 ,-0

 

Ngaphakathi nangaphandle kwe-scratch:

 

Ukujula kokuklwebha: 0.2mm, ubude: 2cm, kubizwa ngokuthi i-scratch. Akuvunyelwe

Ukuqonda: ≤I-6meter, ukugoba kungu-5mm,≤I-12meter, ukugoba kungu-8mm

 

Isibonelo:

Ishubhu yoqobo engu-610*19 eshisayo yandiswa ngo-660*16

Ubude bepayipi langempela: 12.84meter

Ugqinsi olunwetshiwe:19*0.92=17.48(isikhathi esingu-1)

19*0.84=15.96(2 izikhathi）

Ubude obunwetshiwe bepayipi:610÷660*1.04*12.84=12.341962

Ububanzi obunwetshiwe:625+17.48*2+1=660.96(isikhathi esingu-1)

625+15.96*2+1=657.92(2 izikhathi)

 

Usayizi wemojuli: 660-2 * 16 = 628