Axial rub-tawm tag nrho detachment tsis ua hauj lwm yog hais txog axial thrust generated los ntawm nruab nrab siab, kua cuam tshuam thiab pipeline thermal expansion ua rau PFA hauv ob sab phlu raws cov yeeb nkab axis. Lub zog sib txuas ntawm lub hauv ob sab phlu thiab steel puag yeeb nkab tsis tuaj yeem tiv taus qhov nruam tensile load. Cov hauv ob sab phlu tawm ntawm phab ntsa sab hauv ntawm cov yeeb nkab steel nkaus, swb mus rau ib qho kawg ntawm cov kav dej, sib sau ua ke thiab folds hauv lub luj tshib lossis tees, ncaj qha thaiv tag nrho cov dej ntws. Lub caij no, corrosive nruab nrab ua rau qhov sib cais ntawm cov hauv ob sab phlu thiab substrate, ua rau loj - cheeb tsam xeb thiab nkag mus rau ntawm cov yeeb nkab hlau lub cev. Qhov kev ua tsis tiav no yog qhov ua tiav kev sib cais tsis ua tiav qhov sib txawv ntawm lub zos degumming, uas feem ntau tshwm sim nyob rau hauv ntev -kab kav dej thiab cov kav dej txuas nrog ib qho muaj zog - txoj kev ua kua dej.
1. Axial Tension thiab tag nrho kev sib cais tshuab
PFA hauv ob sab phlu tso siab rau siab -kub sintering adhesion thiab flange flanging clamping kom ua tiav axial fixation. Thaum cov kua dej ntws los ntawm kev kub ceev, lub zog dynamic ua rau axial rub quab yuam nyob rau sab hauv phab ntsa ntawm lub hauv ob sab phlu. Yog hais tias lub flange flanging yog torn los yog qhov kawg kho cov qauv tsis, lub hauv ob sab phlu poob axial txwv. Thermal expansion thiab contraction sib txawv ntawm cov yeeb nkab steel thiab fluoroplastic yuav ua rau lub sij hawm shear kev nyuaj siab ntawm lub tsev neeg sib txuas, maj mam stripping lub sintered ua ke nto ntawm ob kawg mus rau nruab nrab. Thaum qhov sib txuas ntawm thaj chaw sib cais tag nrho, cov hauv ob sab phlu yog tsav los ntawm qhov nruab nrab siab kom xaub raws cov kav dej, stacking ntawm cov yeeb nkab fittings nrog kev hloov sai sai. Tsis zoo li ib nrab bubbling peeling tshwm sim los ntawm nruab nrab infiltration, qhov kev puas tsuaj no yog dominated los ntawm lwm yam khoom tensile load es tsis yog interlayer gas siab jacking.
2. Cov hauj lwm zoo tshaj plaws yuav rub-tawm kev puas tsuaj
Ntev ncaj cov kav dej uas tsis muaj qhov nruab nrab anchoring thiab tsuas yog ob qhov kawg kho los ntawm flanges;
Qhov hluav taws xob cov kav dej ntawm cov twj tso kua mis nrog ib qho muaj zog - txoj kev hydrodynamic thrust thiab nruam scouring;
Cov kav dej uas nquag mus rau pem hauv ntej thiab rov qab siab hloov pauv thiab hloov axial quab yuam;
Cov yeeb nkab ntu uas flange flanging tau raug puas tsuaj los ntawm dhau- zawm lossis sib dhos khawb;
Kab rov tav pipelines nrog lub ntiajteb txawj nqus pab hauv ob sab hauv qab zawv zawg thiab interface stripping.
3. Core Inducing Factors Accelerating Pull-tawm tsis ua tiav
Tsuas yog ob- kawg flange fixation yog saws yam tsis tau ntxiv anti- rub- tawm cov ntsiab lus thauj tog rau nkoj hauv nruab nrab ntawm cov kav dej ntev;
Flange flanging hauv ob sab phlu yog tawg los yog tawg thaum lub sij hawm installation, poob kawg limiting muaj nuj nqi;
Tshaj siab nruab nrab ntws tshaj tawm ua rau ntau tshaj axial dynamic luag ntawm lub hauv ob sab phlu;
Qhov kub thiab txias sib txawv ntawm kev pib thiab kaw ua rau rov qab sib txawv deformation los rhuav tshem cov kev sib txuas;
Tus thawj sintering bonding lub zog tsis txaus vim cov txheej txheem prefabrication tsis zoo.
4. Tag nrho -Txuas Kev Tiv Thaiv thiab Tswj Kev Ntsuas Kev Ntsuas
① Teem tiv thaiv - kos duab lub nplhaib nplhaib ntawm lub sijhawm ntawm qhov ntev - cov kav dej nyob deb
Xauv lub hauv ob sab phlu radially thiab axially los tiv thaiv zuag qhia tag nrho axial zawv zawg hauv paus.
② nruj me ntsis tiv thaiv flange flanging thaum hoisting thiab installation kom tsis txhob khawb thiab tawg
Guarantee qhov kawg ntsej muag mechanical limiting nyhuv ntawm hauv ob sab phlu.
③ Txwv tsis pub cov raj xa dej nruab nrab ntws tawm hauv qhov tsim los tiv thaiv - rub - tawm qhov tso cai
Txo hydrodynamic axial traction quab yuam ntawm lub hauv ob sab phlu.
④ Siv cov ntsuas kub nce thiab siab ruaj khov ua haujlwm kom txo tau cov thermal hloov shear kev ntxhov siab
Zam kom tsis txhob muaj qhov sib txawv ntawm qhov sib txawv ntawm cov hauv ob sab phlu thiab cov yeeb nkab steel hauv lub sijhawm luv luv.
⑤ Ua rub-tawm qhov kev sim ua piv txwv ua ntej cov khoom xa tuaj kom paub tseeb qhov kev sib txuas ntawm kev sib txuas
Tshem tawm cov kab ntawm cov kav dej uas tsis muaj zog sib txuas.
5. Kev Tiv Thaiv Cov Teeb Meem Sib piv
表格
| Tsim & Installation hom | Axial Pull-tso cai | Daim ntawv thov tswv yim |
|---|---|---|
| Cov yeeb nkab ntev yam tsis muaj qhov nruab nrab anchoring + puas flange flanging + ultra- siab khiav ceev | Tag nrho cov ntaub thaiv zawv zawg thaiv tshwm sim nyob rau hauv luv luv - lub sijhawm ua haujlwm | Ntxiv ua-hauv kev tiv thaiv- rub- tawm cov thauj tog rau nkoj thiab hloov cov flange yeeb nkab puas |
| Distributed anti-daim duab anchoring qauv + zoo kawg nkaus txwv flanging + txaus tus nqi tswj | Zoo tswj axial slipping thiab ib qho detachment ntawm hauv ob sab phlu | Tus qauv tsim qauv specification rau ntev -nruab deb PFA lined conveying pipelines |
| Tag nrho -section anchoring layout + Hoobkas rub quab yuam soj ntsuam + tsis tu ncua endoscopic axial xaav kuaj | Tsis tshua muaj kev sib cais tag nrho hauv ob sab phlu thiab cov raj xa dej thaiv kev nyab xeeb zais cia | Cov tswv yim xav tau ntev - nrug tsis muaj kev cuam tshuam pub noj los tiv thaiv -corrosion cua sov yeeb nkab network |
Xaus
PFA hauv ob sab phlu axial rub-tawm tsis ua hauj lwm tshwm sim los ntawm cov axial tensile load ntau tshaj qhov kev sib txuas thiab txwv kev txwv, ua rau kom tiav kev sib cais thiab zawv zawg blockage ntawm anti- txheej corrosion. Cov tswv yim tiv thaiv tseem ceeb suav nrog kev teeb tsa nruab nrab los tiv thaiv- rub- tawm ntawm cov txheej txheem anchoring, tiv thaiv kev ncaj ncees ntawm flange kawg txwv cov qauv, tswj kev khiav ceev kom txo tau cov kua thrust, txo qis kub hloov pauv kom tsis muaj zog interface shear quab yuam thiab ntxiv dag zog rau lub Hoobkas kev soj ntsuam kev ua tau zoo. Tag nrho- txheej txheem tswj kom zoo los ntawm kev hloov kho cov khoom, kev tshuaj xyuas lub Hoobkas mus rau ntawm - kev tswj xyuas qhov chaw tuaj yeem tshem tawm cov kav dej thaiv thiab cov substrate corrosion leakage tshwm sim los ntawm tag nrho rub- tawm ntawm kev tshem tawm ntawm PFA kab cua sov raj.
