Dab tsi yog Hlau - Tes Tsho Steel Composite Rwb thaiv tsev yeeb nkab?
Steel-sleeve steel composite rwb thaiv tsev yeeb nkab yog lub Hoobkas- ua yeeb nkab- hauv - cov yeeb nkab: cov yeeb nkab ua haujlwm (cov nqa khoom nruab nrab) yog ib puag ncig los ntawm rwb thaiv tsev thiab qhwv hauv qhov loj dua - txoj kab uas hla sab nrauv steel casing. Nws yog cov txheej txheem kev daws teeb meem rau ncaj qha- faus hauv cheeb tsam cua sov, chav faib thiab kub- cov kab xa dej, vim tias nws xa cov nruab nrab ntawm qhov kub thiab txias nrog qhov tsis tshua muaj cua sov thaum tiv thaiv cov rwb thaiv tsev los ntawm cov dej hauv av thiab av.
System Structure
Lub cev ua haujlwm:
cov cab kuj sab hauv-feem ntau seamless lossis welded carbon steel qhov loj rau qhov ntws thiab siab (xws li API 5L, A106 lossis GB / T 8163).
Insulation txheej:
rigid polyurethane (PUR) ua npuas ncauj, los yog pob zeb / ntxhia wool rau siab dua -kub qhov kev pab cuam.
Outer casing:
lub tes tsho steel uas muab kev tiv thaiv txhua yam thiab vapor barrier; lub annulus yuav suav nrog qhov sib txawv ntawm huab cua los yog ua npuas ncauj tag nrho.
Xaus:
Cov yeeb nkab ua hauj lwm xaus qhov project dhau ntawm lub casing rau qhov chaw vuam, thiab cov pob qij txha ua tiav nrog rwb thaiv tsev thiab lub tes tsho casing tom qab vuam.
Rwb thaiv tsev Options
| Rwb thaiv tsev | Qhov kub thiab txias | Thermal conductivity | Hom kev siv |
|---|---|---|---|
| Polyurethane (PUR) ua npuas ncauj | Mus txog ~ 140 degree | 0.022–0.033 W/(m·K) | Cov dej kub, qis -siab chav |
| Pob zeb / ntxhia ntaub plaub | Txog li 600℃+ | 0.035–0.045 W/(m·K) | Siab - qhov kub thiab txias |
| Calcium silicate | Mus txog 650 degree | 0.055–0.070 W/(m·K) | Industrial chav thiab txheej txheem |
Huab cua-Gap piv rau Fully-Foamed Design
Hauv cov hlau classic- lub tes tsho steel tsim, qhov sib txawv ntawm cov huab cua sib cais cais cov rwb thaiv tsev los ntawm sab nrauv. Cov huab cua sib txawv ua raws li cov kua dej thiab saib xyuas cov channel: txhua qhov xau los ntawm cov yeeb nkab ua haujlwm lossis cov dej noo tuaj yeem raug kuaj pom los ntawm cov chaw kuaj xyuas, thiab qhov sib txawv tiv thaiv dej los ntawm cov rwb thaiv tsev. Tag nrho-foamed designs (ua npuas ncauj sau tag nrho cov annulus) muab cov cua sov qis dua tab sis tsis tshua muaj pa tawm-detectability, thiab yog ib yam ntawm ib leeg - yeeb nkab polyurethane systems.
Qhov zoo rau Direct Burial
High mechanical zog:
cov hlau casing withstands av load, tsheb thauj mus los thiab cuam tshuam zoo dua li cov tsho yas.
Kev tiv thaiv dej noo:
lub tes tsho steel ntxiv rau huab cua sib txawv ua kom rwb thaiv tsev kom qhuav, khaws cia nws cov thermal ua haujlwm.
Kev saib xyuas cov dej xau:
Kev soj ntsuam cov chaw nres nkoj tso cai rau kev tshawb pom ntxov ntawm kev ua haujlwm - yeeb nkab xau.
Kub kub:
haum rau cov kav dej uas cov tsho polyurethane yuav ua tsis tiav.
Kev teeb tsa:
prefabricated lengths txo cov rwb thaiv tsev ua hauj lwm thiab ua kom ceev tso.
Installation thiab Joints
Cov ntu yog pob tw-welded ntawm cov yeeb nkab ua haujlwm, qhov vuam raug kuaj (hydrostatic lossis NDT), tom qab ntawd cov kev sib koom ua ke yog rov- insulated thiab cov casing sab nraud raug kaw nrog lub tes tsho weld lossis mechanical joint. Lub casing weld kuj tseem xau- kuaj qhov twg qhov kev qhia tshwj xeeb xav tau, thiab qhov sib koom ua tiav yog coated rau kev tiv thaiv corrosion ua ntej backfilling.
Cov lus nug nquag
Dab tsi yog qhov txawv ntawm steel- tes tsho thiab yas- lub tsho insulated yeeb nkab?
Kev tiv thaiv sab nrauv: steel casing muab ntau dua txhua yam muaj zog thiab kub muaj peev xwm thiab tso cai rau huab cua - qhov sib txawv los saib xyuas; Cov tsho yas (HDPE) pheej yig dua thiab haum rau qis dua - cov kab dej kub.
Cov yeeb nkab no puas tuaj yeem siv rau chav dej?
Yog lawm, nrog pob zeb wool los yog calcium silicate rwb thaiv tsev, steel- lub tes tsho steel yeeb nkab nqa chav ntawm qhov kub tshaj qhov txwv ntawm polyurethane ua npuas ncauj.
Vim li cas ho muaj qhov sib txawv ntawm huab cua?
Qhov sib txawv ua rau muaj dej noo, ua kom lub rwb thaiv tsev kom qhuav, thiab muab txoj hauv kev tuaj yeem pom los ntawm cov chaw kuaj xyuas.
Yuav ua li cas yog lub teb pob qij txha insulated?
Tom qab vuam cov yeeb nkab ua haujlwm, qhov sib koom ua ke yog rov- insulated nrog tib cov ntaub ntawv thiab cov casing sab nraud raug kaw nrog lub tes tsho weld los yog clamp ob leeg, ces coated.
Cov khoom siv yeeb nkab ua haujlwm dab tsi yog siv?
Cov pa roj carbon steel ib qhov kev pabcuam code-feem ntau GB / T 8163, ASTM A106 lossis API 5L, qhov loj me rau qhov siab thiab kub.
Puas tuaj yeem kuaj pom tom qab faus?
Yog lawm, los ntawm kev soj ntsuam cov chaw nres nkoj thiab los ntawm kev saib xyuas lub annulus rau kev hloov pauv siab lossis noo noo, muab kev ceeb toom ntxov ntawm kev ua haujlwm - yeeb nkab tsis ua haujlwm.
