Threaded kev twb kev txuas sealing tsis ua hauj lwm txhais tau hais tias qhov sib txuam nrog rau sab hauv thiab sab nraud threads maj mam loosen nyob rau hauv thermal voj voog hloov deformation, system siab hloov thiab cov khoom vibration, lub pre-tightening quab yuam tsis tu ncua decays, thiab qhov khoob tshwm sim ntawm lub sealing kev sib cuag nto. Cov txheej txheem nruab nrab xau tawm raws qhov sib txawv ntawm cov xov xov. Nyob rau hauv cov xwm txheej hnyav, cov threaded khub tag nrho disengages nyob rau hauv lub siab thrust, uas ua rau lub pipeline ntog tawm thiab nruab nrab leakage xwm txheej. Qhov kev ua tsis tiav no feem ntau tshwm sim ntawm cov me me - tho cov kav xa dej, ntsuas ntsuas - tawm cov chaw nres nkoj thiab cov khoom sib txuas uas tsis tuaj yeem tshem tawm, uas yog ib qho kev sib dhos tsis ua haujlwm ntawm titanium cua sov pipelines.
1. Loosening thiab Leakage Evolution Mechanism
Tom qab threaded los ua ke nrog rated torque, xov hniav nto tsim extrusion preload thiab compresses lub sealing muab tub lim los tsim ib tug kaw sealing barrier. Hauv kev rov ua cua sov thiab cua txias, qhov sib txawv ntawm thermal expansion coefficient sib txawv ntawm titanium yeeb nkab lub cev thiab xov fittings ua rau me me txheeb ze hloov pauv ntawm cov xov meshing. Twj vibration thiab nruab nrab siab cuam tshuam yuav ntxiv shear cov xov meshing qauv, ua rau kom tas mus li so ntawm thawj fastening kev nyuaj siab. Lub sealing gasket los yog PTFE raw khoom siv yog maj extruded thiab poob, compression npaum li cas ntawm cov sealing txheej txo, thiab nkag mus raws yog tsim nyob rau hauv lub sib koom nto. Corrosive nruab nrab seeps raws xov sib txawv tsis tu ncua, hnav cov xov hniav profile, aggravates meshing clearance, thiab thaum kawg ua rau xov tripping thiab pipeline sib cais. Qhov sib txawv ntawm cov vuam tsis xws luag, qhov tsis ua haujlwm no feem ntau yog tshwm sim los ntawm kev sib dhos ua ntej- nruj nruj raws li kev ua haujlwm.
2. Cov hauj lwm zoo ib yam ua rau cov xov xoob xoob tsis ua tiav
Cov cuab yeej piv txwv cov chaw nres nkoj thiab me me - txoj kab uas hla ceg threaded pob qij txha nrog nquag hloov siab;
Threaded connectors nyob ze cov twj tso kua dej thiab cov khoom vibrating bearing ntev - lub sij hawm txhua yam kev co;
Threaded seem nyob rau hauv qhov kub thiab txias alternating cheeb tsam nrog pom tseeb thermal expansion thiab contraction sib txawv;
Threaded luj tshib thiab txo cov adapters bearing ntxiv dabtsi yog khoov lub sij hawm thiab rub quab yuam;
Tshaj -cov xov nruj nrog cov yas deformation ntawm cov hniav uas ua rau tsis muaj peev xwm fastening mus tas li.
3. Qhov tseem ceeb Inducing Factors Accelerating Loosening puas
Tsis muaj kev tiv thaiv- loosening locking ntsuas tom qab screwing, tsuas yog cia siab rau xov meshing rau fixation;
Ntau dhau los yog tsis txaus nruj torque ua rau xov zawv zawg hniav los yog tsis txaus sealing compression;
Ntev -lub sij hawm kub hloov pauv thiab kev vibration ua rau tsis tu ncua ntawm kev ua ntej- zawm kev ntxhov siab;
Sealing khoom mismatching kub thiab nruab nrab, laus thiab pulverization tom qab kev pab cuam ntev;
Pipeline tuag qhov hnyav thiab sab nraud bending load ncaj qha ua haujlwm ntawm cov pob qij txha los ua kom muaj zog ntxiv.
4. Tag nrho -Txuas Kev Tiv Thaiv thiab Tswj Kev Ntsuas Kev Ntsuas
① Txais torque ciaj ntswj rau tus qauv ruaj ruaj -torque screwing
Tsis txhob random phau ntawv ceev kom tiv thaiv cov xov puas thiab tsis txaus sealing compression.
② Configure anti-loosing kho rau threaded qhov chaw
Lub tsho tiv no siab -kub resistant xov locking adhesive los yog nruab ob lub xauv ceev kom txwv kev sib hloov.
③ Xaiv titanium - sib xws siab - kub corrosion - cov ntaub ntawv sealing resistant
Siv PTFE xov daim kab xev los yog saj zawg zog graphite packing haum rau qhov chaw ua hauj lwm.
④ Teeb tsa kev txhawb nqa ywj pheej nyob ze kom dais cov raj xa dej
Cais lub sijhawm bending thiab rub quab yuam kom cov pob qij txha nkaus xwb dais sealing siab.
⑤ Npaj kev tshuaj xyuas tsis tu ncua thiab kev nruj me ntsis thaum lub sijhawm tu
Tshawb xyuas cov ntsiab lus xau thiab txhawb nqa cov xov xoob xoob sib txuas ua ntu zus.
5. Kev Tiv Thaiv Cov Teeb Meem Sib piv
表格
| Kev sib dhos & Kev tu hom | Xov Loosening Leakage Risk | Daim ntawv thov tswv yim |
|---|---|---|
| Kev tuav random zawm + tsis muaj kev tiv thaiv -loo + tsis muaj kev tshuaj xyuas | Kev xau sai thiab txawm tias xov poob thaum ua haujlwm | Re- nruj nrog tus qauv torque thiab ntxiv kev tiv thaiv- xoob ntsuas tam sim |
| Torque fastening + anti- txheej txheem xoob + kev tshuaj xyuas lub sijhawm | Nthuav cov xov loosening thiab nruab nrab to | Standard installation specification rau titanium threaded pipeline interfaces |
| Muab ob npaug rau txiv ntoo xauv + kev txhawb nqa ywj pheej + tshwj xeeb sealing muab tub lim | Tsawg heev sealing tsis ua hauj lwm tshwm sim | Cov txheej txheem nyiam rau kev vibration thiab kub hloov pauv ua haujlwm hnyav |
Xaus
Threaded sib koom ua tsis tiav ntawm titanium cua sov raj feem ntau yog los ntawm ua ntej -tightening force attenuation induced by thermal cycle, vibration and stress relaxation, which damages the sealing structure and loosens thread engagement. Cov kev tiv thaiv tseem ceeb muaj xws li kev sib dhos torque, txhim khu kev qha los tiv thaiv -loosing tsim, sib tw los tiv thaiv - corrosion thiab siab - cov ntaub ntawv kub sealing, kev cais tawm sab nraud thiab tsis tu ncua ntawm - chaw soj ntsuam. Tag nrho - txheej txheem tswj kev tsim kho thiab kev saib xyuas txhua hnub tuaj yeem tshem tawm kev nyab xeeb thiab kev pheej hmoo ntau lawm los ntawm kev sib koom ua ke ntawm cov kav dej titanium cua sov.
