Lub ntsiab tsis ua hauj lwm hom ntawm bellows yog instability, corrosion to, qaug zog puas, kev co puas, thiab lwm yam. Ntawm lawv, instability yog ib yam ntawm tsis ua hauj lwm daim ntawv nrog kuj phem xwm, thiab nws raug mob yog zoo heev txo lub peev xwm thiab siab bearing peev xwm ntawm. cov hauv qab. Yog li ntawd, kev ruaj ntseg ntawm lub tshuab nqus tsev tau nyiam cov xim thaum ntxov, thiab kev tshawb fawb txog kev tsis ruaj khov ntawm lub hauv siab tau tsim tsis tu ncua.
Qee qhov xwm txheej ntawm circumferential instability
sij hawm | qhov chaw ntawm qhov teeb meem | xwm txheej ua haujlwm | tsis ua hauj lwm hom |
xyoo 1987 | Expansion sib koom ua ke rau thermal engineering | Sab nraud siab ntxiv rau tensile hloov chaw | circumferential instability |
xyoo 2007 | Expansion sib koom ua ke rau lub refinery | Sab nraud siab ntxiv rau tensile hloov chaw | Trough of Wave bulges sab nraum |
xyoo 2014 | Expansion Joint rau ib tsob nroj tshuaj | Sab nraud siab ntxiv rau tensile hloov chaw | crest subsides thiab so |
Ob hom kev tsis ruaj tsis khov yog kem instability (kem buckling) thiab dav hlau instability (plane buckling). Kev tshawb fawb txog ob hom teeb meem tsis ruaj khov hauv tsev thiab txawv teb chaws kuj tseem txaus. Rau qhov teeb meem no, kev txiav txim siab txhim khu kev qha tau raug tsim. Thiab nws yog incorporated tsim qauv. Ntxiv nrog rau ob hom kev tsis ruaj khov no, muaj lwm hom kev tsis ruaj khov uas tshwm sim ntau zaus thiab muaj qhov tsis zoo ntawm kev ua tsis tiav-circumferential instability.
Circumferential instability yog hais txog tam sim ntawd distortion ntawm cov khoom bellows nyob rau hauv lub siab tseem ceeb, lub corrugation sai wrinkled tiag tiag, yoj crest collapses los yog yoj trough bulges. Ib nrab ntawm qhov kev tsis sib haum xeeb ntawm lub hauv siab yog tshwm sim nyob rau hauv lub siab sab nraud.
Qhov kev puas tsuaj ntawm lub voj voog tsis ruaj khov ntawm lub tshuab nqus tsev yog qhov hnyav heev, thiab nws yuav tsim cov corrugated wrinkles nyob rau hauv lub sij hawm luv luv nrog rau lub siab tseem ceeb ntawm instability, thiab tam sim ntawd poob nws bearing peev xwm. Nyob rau hauv cov xwm txheej zoo li no, yuav tsis muaj chaw rau kev kho dua tshiab thiab hloov pauv hauv cov ntawv thov engineering. Kev nqa mus txuas ntxiv yuav yooj yim ua rau xau, ua rau muaj kev phom sij rau tus kheej, thiab ua rau muaj kev puas tsuaj loj thiab cuam tshuam rau kev sib raug zoo.
