Optimization ntawm Track Pad Rwb thaiv tsev Performance and Insulation Failure Prevention Technology
Dab tsi yog qhov tseem ceeb inducing yam ntawm rwb thaiv tsev tsis ua hauj lwm nyob rau hauv -rail base daim hlau thiab lawv cov kev phom sij rau taug qab circuits?
Lub hauv paus inducing yam tseem ceeb ntawm rwb thaiv tsev tsis ua hauj lwm nyob rau hauv - rail puag daim hlau muaj xws li peb pawg: rwb thaiv tsev tsis kam los ntawm cov khoom aging, leakage channel tsim los ntawm cov pa phem, thiab rwb thaiv tsev txheej puas los ntawm kev puas tsuaj. Kev laus ntawm cov ntaub ntawv yog manifested raws li qhov degradation ntawm lub elastomer ntawm cov roj hmab puag daim hlau, thiab cov rwb thaiv tsev kuj txo los ntawm qhov pib 10⁸Ω mus rau hauv qab 10⁶Ω, tsis ua raws li cov kev cai ntawm rwb thaiv tsev ntawm kev khiav circuits. Cov pa phem hauv qhov chaw feem ntau yog impurities xws li plua plav, roj stains, thiab ntsev alkali raws txoj kev ua raws li lub hauv paus phaj saum npoo, tsim cov kab hluav taws xob thiab ua kom cov xau tam sim no ntawm lub hauv paus phaj nto. Kev puas tsuaj rau cov tshuab suav nrog khawb thaum lub hauv paus phaj installation thiab cov kab nrib pleb tshwm sim los ntawm dov ntawm hnyav- tsheb ciav hlau. Cov kev puas tsuaj no yuav ua rau muaj kev sib cuag ncaj qha ntawm cov khoom siv hlau thiab cov ntsia hlau, uas ua rau cov rwb thaiv tsev luv luv. Kev phom sij rau kev taug qab cov kab hluav taws xob yog cov teeb liab cuam tshuam, tsis zoo ntawm cov kab hluav taws xob tsis zoo, tsis ua haujlwm ntawm lub tsheb ciav hlau nrhiav kom pom, ua rau muaj teeb meem tsis ncaj ncees lawm, thiab thaum muaj xwm txheej hnyav, ua rau muaj kev nyab xeeb loj xws li tsheb ciav hlau overshooting signals thiab seem nram qab - kawg kev sib tsoo.
Dab tsi yog cov kev hloov kho cov khoom siv thiab cov kev tsis sib haum xeeb ntawm rwb thaiv tsev kev ua tau zoo rau kev siab - kev tsheb ciav hlau ceev hauv qab - cov phiaj xwm kev tsheb ciav hlau?
Nyob rau hauv -rail puag daim hlau ntawm siab- txoj kev tsheb ciav hlau ceev tau txais cov roj hmab nitrile / nylon 66 cov khoom sib xyaw es tsis txhob siv cov roj hmab ntshiab nitrile. Nylon 66 muaj qhov ntim resistivity Ntau dua lossis sib npaug ntawm 10¹⁴Ω·cm thiab kev ua haujlwm zoo rwb thaiv tsev. Tom qab sib xyaw nrog nitrile roj hmab, cov rwb thaiv tsev ntawm lub hauv paus phaj yog ntau dua lossis sib npaug ntawm 5 × 10⁷Ω. 10% iav fiber reinforcing tus neeg sawv cev yog ntxiv rau cov khoom sib xyaw los txhim kho lub zog ntawm lub phaj phaj, nrog lub zog tensile siab dua lossis sib npaug ntawm 18MPa thiab elongation ntawm kev tawg ntau dua lossis sib npaug ntawm 300% kev vibration ntawm 300%. siab - kev tsheb ciav hlau ceev. Los tiv thaiv- cov neeg ua haujlwm laus thiab ultraviolet absorbers tau ntxiv thaum hloov cov khoom siv kom ncua cov duab{16}}oxidative aging ntawm lub hauv paus phaj. Tom qab kev kuaj kev laus, qhov kev tiv thaiv kev tiv thaiv kev tiv thaiv yog ntau dua lossis sib npaug li 80%, ua tau raws li 20- xyoo kev pab cuam lub neej yuav tsum tau ntawm high{27}} kev tsheb ciav hlau ceev. Cov txheej txheem tseem ceeb yog: rwb thaiv tsev tiv thaiv ntau dua lossis sib npaug ntawm 5 × 10⁷Ω, lub zog dielectric Ntau dua lossis sib npaug ntawm 20kV / mm, ntim resistivity Ntau dua lossis sib npaug rau 10¹³Ω·cm, ntsev tsuag tshuaj tiv thaiv ntau dua lossis sib npaug rau 1000 teev, ua raws li cov txheej txheem rwb thaiv tsev ntawm kev kub ceev {29. Lub rwb thaiv tsev kev ua tau zoo ntawm lub hauv paus hloov phaj yog ruaj khov nyob rau hauv simulated high-ceev railway ua hauj lwm tej yam kev mob, thiab tsis muaj ntau heev rwb thaiv tsev tiv thaiv attenuation.
Dab tsi yog qhov kev tiv thaiv kev tiv thaiv - kev ntsuas kev ua kom pom tseeb thiab kev ua haujlwm ntawm cov qauv rwb thaiv tsev tsim ntawm hauv qab - cov phiaj xwm kev tsheb ciav hlau?
Lub hauv paus ntawm rwb thaiv tsev qauv tsim ntawm hauv qab -rail base daim hlau yog los thaiv cov xau. Ua ntej, tag nrho - qhwv rwb thaiv tsev tsim yog saws, thiab sab sauv thiab sab saum toj thiab cov npoo ntawm lub hauv paus phaj yog them nrog ib txheej rwb thaiv tsev nrog lub thickness ntau dua los yog sib npaug li 3 hli kom tsis txhob muaj kev sib cuag ntawm cov khoom hlau thiab cov ntsia hlau thiab cov pw tsaug zog. Thib ob, rwb thaiv tsev protrusions yog teem rau ntawm ntug ntawm lub hauv paus phaj, nrog ib tug siab ntawm 5 hli thiab ib tug dav ntawm 10 hli, tsim ib tug rwb thaiv tsev barrier los tiv thaiv impurities xws li plua plav thiab roj stains los ntawm accumulating rau cov conductive raws. Thib peb, cov ntsia liaj qhov rooj ntawm lub hauv paus phaj yog ntxiv dag zog rau lub tes tsho ua los ntawm nylon 66 nrog ib tug tuab ntawm 2 hli, cais cov conductive kev sib cuag ntawm bolts thiab lub hauv paus phaj thiab tsis txhob bolts ua to. Thib plaub, qhov saum npoo ntawm lub hauv paus phaj tau txais kev tiv thaiv hydrophobic -slip zoo nkauj tsim nrog kev ntxhib los mos qhov tob ntawm 1mm thiab qhov dav ntawm 2mm, ua kom cov evaporation ntawm cov av noo thiab txo qhov kev pheej hmoo ntawm cov av noo. Kev siv cov txiaj ntsig tau pom tias qhov ntsuas hluav taws xob tsis ua haujlwm ntawm qhov zoo ntawm lub hauv paus phaj yog txo los ntawm 8% mus rau qis dua 0.5%, lub shunting rhiab heev ntawm lub voj voog khiav yog nce 20%, ua kom tau raws li qhov yuav tsum tau ua ntawm siab - ceev railway teeb liab interlocking.
Dab tsi yog cov txheej txheem tseem ceeb thiab cov qauv kev txiav txim siab zoo rau kev ntsuas kev ntsuas hluav taws xob hauv qab - cov phiaj xwm tsheb ciav hlau?
Cov txheej txheem tseem ceeb rau kev ntsuas kev ntsuas hluav taws xob hauv qab - cov phiaj xwm kev tsheb ciav hlau yog txoj kev ntsuas kev tiv thaiv hluav taws xob, siv lub siab -voltage megohmmeter los siv 500V DC voltage, ntsuas qhov ntsuas hluav taws xob tiv thaiv ntawm lub hauv paus phaj, lub sij hawm sim yog 1 feeb, thiab nyeem tus nqi ruaj khov. Txoj kev pab nrhiav kom tau yog txoj kev kuaj lub zog dielectric, siv lub zog zaus tiv thaiv qhov ntsuas hluav taws xob siv lub tshuab hluav taws xob 50Hz, 20kV AC voltage rau 1 feeb, thiab cov phaj hauv paus tsim nyog yog tias tsis muaj kev puas tsuaj lossis flashover. Cov qauv kev txiav txim siab zoo yog: siab- cov phiaj xwm kev tsheb ciav hlau ceev muaj cov rwb thaiv tsev zoo dua lossis sib npaug ntawm 5 × 10⁷Ω thiab lub zog dielectric Ntau dua lossis sib npaug rau 20kV / mm; zoo tib yam railway puag daim hlau muaj rwb thaiv tsev tiv thaiv Ntau tshaj los yog sib npaug rau 10⁷Ω thiab dielectric zog Ntau dua los yog sib npaug rau 15kV / mm; industrial thiab mining puag daim hlau muaj rwb thaiv tsev zoo dua lossis sib npaug ntawm 5 × 10⁶Ω thiab lub zog dielectric Ntau dua lossis sib npaug ntawm 10kV / mm. Kev kuaj pom pom yuav tsum xyuas seb puas muaj cov kab nrib pleb, khawb, npuas thiab lwm yam tsis xws luag ntawm lub hauv paus phaj saum npoo, thiab nws raug txiav txim tias tsis tsim nyog yog tias qhov chaw tsis raug loj dua lossis sib npaug li 1cm². Kev tshuaj ntsuam xyuas yog siv rau kev kuaj batch nrog qhov piv txwv ntawm 5%. Yog tias tus nqi tsis tsim nyog tshaj 2%, tag nrho cov khoom lag luam yuav tsum tau rov qab- tshuaj xyuas, thiab yog tias qhov kev tshuaj xyuas rov qab yog tseem tsis tsim nyog, nws yuav raug muab pov tseg.
Dab tsi yog cov tswv yim tsim kho thiab cov txheej txheem ceeb toom ntxov ntawm kev tiv thaiv kev tiv thaiv tsis ua haujlwm thiab kev tswj hwm rau hauv qab - cov phiaj xwm tsheb ciav hlau?
Kev tsim kho lub tswv yim ntawm kev tiv thaiv kev tiv thaiv tsis ua haujlwm thiab kev tswj hwm rau hauv qab - cov phiaj xwm kev tsheb ciav hlau yog ib qho trinity ntawm kev tiv thaiv + kev saib xyuas + kev kho mob. Kev tiv thaiv kev sib txuas muaj xws li xaiv cov khoom siv sib xyaw ua ke nrog cov rwb thaiv tsev ua haujlwm siab, txheej txheem kev teeb tsa, thiab tu cov impurities tsis tu ncua ntawm lub hauv paus phaj. Cov kev soj ntsuam txuas tau txais cov wireless rwb thaiv tsev xyuas sensors los sau cov ntaub ntawv rwb thaiv tsev tiv thaiv ntawm cov phaj hauv lub sijhawm. Cov sensors tau nruab rau ntawm ntug ntawm lub hauv paus phaj, 20 rau ib mais, thiab cov ntaub ntawv tau muab tso rau hauv kev saib xyuas platform los ntawm Internet ntawm Yam. Txoj kev kho mob txuas tsim kom muaj kev tiv thaiv kev tiv thaiv tsis ua haujlwm xwm txheej ceev. Thaum lub rwb thaiv tsev tiv thaiv ntawm lub hauv paus phaj tau saib xyuas kom qis dua qhov pib, cov neeg ua haujlwm tau npaj tam sim los hloov lub hauv paus phaj kom tsis txhob muaj kev nthuav dav ntawm kev rwb thaiv tsev tsis ua haujlwm. Cov txheej txheem ceeb toom ntxov tau teeb tsa peb- theem ceeb toom qhov pib: thawj- theem ceeb toom (kev tiv thaiv kev tiv thaiv 10⁷-5 × 10⁷Ω), ua rau kev soj ntsuam zoo dua; thib ob- theem ceeb toom (10⁶-10⁷Ω), npaj kev sim tshwj xeeb; Qib thib peb ceeb toom (＜10⁶Ω), hloov lub hauv paus phaj tam sim ntawd. Tom qab kev siv cov kev tiv thaiv thiab kev tswj xyuas, qhov tsis ua hauj lwm ntawm cov kab hluav taws xob khiav tau raug txo los ntawm 40%, thiab kev sib tsoo tsis ua hauj lwm raug cuam tshuam zoo.