TQ912 babban firikwensin kusancin eddy ne na baya-bayan nan daga layin samfurin VM. Yana aiki azaman ɗayan mahimman abubuwan haɗin TQ9xx jerin eddy na yanzu kusancin ma'aunin ma'auni, wanda aka ƙera don ma'aunin ma'auni na matsuguni na dangi, girgizawa, da matsayi na axial na injin jujjuya a cikin buƙatar yanayin masana'antu. TQ912, tare da madaidaicin kebul ɗin tsawo na EA90x da kwandishan siginar IQS900, suna samar da cikakkiyar sarkar ma'auni. An yi amfani da shi sosai a cikin yanayin kulawa da tsarin kariya na tsaro don manyan kayan aiki masu juyawa irin su turbine turbines, gas turbines, hydraulic turbines, janareta, turbo-compressors, da kuma famfo.
Babban ka'idar aunawa da mahimman sigogin aikin TQ912 suna da gaske iri ɗaya da na TQ902. Bambancinsu mai mahimmanci ya ta'allaka ne a cikin salon hawan injina: TQ912 an ƙera shi musamman don aikace-aikacen baya-Dutsen. Wannan yana nufin kebul ɗin firikwensin yana fita daga baya na nut ɗin mai hawa, maimakon daga gefe kamar yadda yake a daidaitaccen dutsen (TQ902). Wannan ƙira yana ba da sassauci mafi girma da sauƙi don tafiya da shigarwa a wuraren hawa tare da iyakokin sararin samaniya ko takamaiman tsarin injiniya.
Yin aiki bisa ka'idar eddy-yanzu, wannan firikwensin shine kyakkyawan zaɓi don kariyar injuna mai mahimmanci da aikace-aikacen kiyaye tsinkaya, sananne don babban amincinsa, babban daidaito, juriyar yanayi na musamman, da cikakkun takaddun takaddun aminci (ciki har da tabbacin fashewa da takaddun amincin aiki).
Ƙa'idar Aiki
Ayyukan firikwensin TQ912 ya dogara ne akan ka'idar Eddy-Current, dabarar ma'aunin shigar da wutar lantarki mara lamba. Za a iya rarraba ainihin tsarin aikin sa zuwa matakai masu zuwa:
Ƙarfafa Siginar Haɗawa Mai Girma:
TQ912 firikwensin kanta na'ura ce mai wucewa; Ana samar da makamashin aikinsa ta hanyar kwandishan siginar IQS900 mai dacewa. Matsakaicin oscillator mai girma a cikin IQS900 yana haifar da matsakaicin matsakaici (yawanci kewayon MHz), wanda aka isar da shi zuwa firikwensin TQ912 ta hanyar kebul na haɗi.
Halin Filayen Wutar Lantarki da Tasirin Eddy na Yanzu:
Shugaban firikwensin TQ912 yana ƙunshe da madaidaicin murhun shigar da rauni. Lokacin da babban mitar halin yanzu ke gudana ta cikin wannan nada, yana haifar da babban madaidaicin filin lantarki a kusa da ƙarshensa, watau firikwensin firikwensin (wanda aka yi da babban aikin injiniyar thermoplastic PPS - Polyphenylene Sulfide).
Lokacin da wannan filin na lantarki ya yi aiki a saman maƙasudin ƙarfe na ƙarfe (yawanci sandal ko kwala na injin jujjuyawar), bisa ga ka'idar Faraday ta shigar da wutar lantarki, igiyoyin rufaffiyar madauki, da ake kira eddy currents, ana jawo su a cikin farfajiyar saman abin da ake hari.
Canjin Canjin Taimako da Hankalin Nisa:
Waɗannan raƙuman ruwa da aka jawo da kansu suna haifar da filin maganadisu na biyu wanda ke adawa da filin asali daga na'urar firikwensin, ta haka yana fuskantar (rauni) ƙarfin filin asali.
Wannan hulɗar yana haifar da canji a cikin tasiri mai tasiri na na'urar firikwensin. Nisa (rata) tsakanin firikwensin firikwensin da maƙasudin maƙasudin kai tsaye yana ƙayyade ƙarfin wannan hulɗar: mafi kusancin nesa, mafi ƙarfi da tasirin eddy na yanzu, kuma mafi girman canji a cikin tasirin nada; Nisa mafi nisa, mafi raunin tasiri, kuma ƙarami yana canzawa.
Don haka, ƙayyadaddun alaƙar aiki tana wanzuwa tsakanin canji a cikin maƙarƙashiyar coil da tazarar tazarar iska tsakanin firikwensin da manufa.
Ƙaddamar da siginar sigina da Fitarwa:
Ana gano canji a cikin maƙarƙashiyar coil ta hanyar da'irar lalata da aka haɗa a cikin na'urar siginar IQS900.
Na'urar sanyaya sigina tana aiwatarwa kuma tana jujjuya wannan hadadden bambance-bambancen impedance, a ƙarshe yana fitar da siginar analog (voltage ko halin yanzu) wanda yayi daidai da tazarar tazarar.
Wannan siginar fitarwa yawanci ya ƙunshi abubuwa biyu:
Bangaren canjin halin yanzu (AC) mai ƙarfi: Daidai da saurin motsin motsi na shaft dangane da firikwensin.
Bangaren halin yanzu kai tsaye (DC): Daidai da matsakaicin rata (matsayi) tsakanin firikwensin da shaft.
A taƙaice, TQ912 tana canza canje-canjen nisa ta jiki zuwa canje-canjen ma'aunin lantarki na coil ta hanyar shigar da wutar lantarki, waɗanda daga nan ana canza su zuwa daidaitattun siginonin lantarki ta hanyar kwandishan siginar, yana ba da damar ma'aunin ƙaura na daidaitaccen mara lamba.
Babban Ayyuka da Features
A matsayin ainihin sarkar ma'auni mai girma, firikwensin TQ912 yana alfahari da ayyuka da fasali masu zuwa:
Zane-Dutsen Juya:
Wannan shine mafi kyawun fasalin TQ912. Kebul ɗinsa yana fita daga bayan jikin firikwensin (hawan goro), ba gefe ba kamar yadda yake a daidaitaccen nau'in. Wannan zane ya sa ya dace musamman don:
Aikace-aikace inda sarari a bayan rami mai hawa ya isa amma sarari na gefe yana da ƙuntatawa.
Aikace-aikacen da ke buƙatar kebul ɗin a ɓoye a cikin hannun riga mai hawa ko tsarin injina don ingantacciyar kariya ko mafi kyawun hanyar kebul.
Ƙirƙirar adaftan masu hawan firikwensin na musamman.
Ma'aunin Maɗaukakin Maɗaukakin Maɗaukakin Maɗaukaki:
Dangane da ƙa'idar eddy-yanzu, baya buƙatar haɗin jiki tare da manufa, guje wa lalacewa da tasirin lodi, da kuma sake haifar da faɗakarwa mai ƙarfi da bayanin matsayi na manyan juzu'i masu juyawa.
Yana ba da kewayon ma'aunin linzamin kwamfuta na 2 mm ko 4 mm (dangane da zaɓin kwandishan sigina), tare da kyakkyawan layi da hankali (misali, 8 mV/μm ko 4 mV/μm).
Amsa Mita Mai Faɗi:
Gabaɗaya amsawar sarkar ma'auni na iya isa DC zuwa 20 kHz (~ 3 dB), mai iya ɗaukar komai daidai daga motsi axial sosai zuwa rawar jiki na rotors masu saurin gudu da ke gudana a dubun dubatar RPM, saduwa da buƙatun API 670 5th Edition don tsarin kula da rawar jiki.
Daidaitawar Muhalli na Musamman:
Faɗin Yanayin Yanayin Aiki: Jikin firikwensin na iya ci gaba da aiki a yanayin zafi daga -40°C zuwa +180°C, kuma yana jure wa yanayin zafi na ɗan lokaci har zuwa 220°C.
Ƙarfafa Gina: Jikin firikwensin an ƙera shi daga bakin karfe (AISI 316L), kuma an lulluɓe coil ɗin kai a cikin kayan PPS, yana ba da kyakkyawan juriya na sinadarai da ƙarfin injina.
Babban Kariya Rating: Shugaban firikwensin (bincike da kebul na haɗin kai) yana da ƙimar kariya ta IP68, mai jurewa shigar ƙura da tsawaita nutsewa cikin ruwa.
Jijjiga da Juriya na Shock: Zai iya jure girgizar 5g kololuwa (10 zuwa 500 Hz) da girgiza 15 g kololuwar (rabin-sine kalaman, 11 ms duration).
Cikakken Takaddun Takaddar Wuri Mai Haɗari (Na zaɓi):
Akwai sigar A5 (Ex) na zaɓi, samun takaddun shaida na fashe daban-daban na ƙasa da ƙasa waɗanda suka dace da amfani a wurare masu haɗari (mai yuwuwar fashewar yanayi).
Takaddun shaida sun ƙunshi yankuna da ƙa'idodi da yawa waɗanda suka haɗa da Turai (ATEX), International (IECEx), Arewacin Amurka (cCSAus/UL), UK (UKEX), Koriya ta Kudu (KGS), Kazakhstan (EAEU), da sauransu (misali, Ex ec, Ex ia don yanayin Gas da Dust).
A aikace-aikacen hana fashewa, ana ɗaukar firikwensin a matsayin 'Sauƙaƙan Kayan Aiki' kuma dole ne a yi amfani da shi tare da igiyoyin EA90x da kwandishan siginar IQS900 waɗanda suma suna da daidaitattun takaddun shaida na fashewa.
Canja-canje na sashi da Haɗin Tsarin:
TQ912, kebul na tsawo na EA902, da kwandishan siginar IQS900 suna samar da sarkar ma'aunin da aka riga aka daidaita. Kowane sashi a cikin sarkar yana musanya ba tare da buƙatar gyarawa ba, yana sauƙaƙa sarrafa kayan gyara da kiyaye filin.
Cikakken jituwa tare da Parker Meggitt's VM600™/VM600 da VibroSmart® tsarin kula da yanayin injina; ana iya haɗa siginar fitarwa kai tsaye.
Siffar sa, dacewa, da aikinta sun yi daidai da na'urorin firikwensin TQ4xx na al'ada, suna aiki azaman maye gurbin haɓakawa kai tsaye, sauƙaƙe haɓakawa don tsarin da ake dasu.
Taimako don Aikace-aikacen Tsaro na Aiki:
Lokacin da aka haɗa su tare da kwandishan siginar IQS900 mai nuna bincike (zaɓin oda C2), duk sarkar ma'auni shine SIL 2 (IEC 61508) da Cat 1 PL c (ISO 13849) 'ta ƙira'.
Wannan yana ba da damar amfani da TQ912 a cikin tsarin da ke da aminci, kamar sarƙoƙin ma'aunin ma'auni na sauri a cikin Tsarin Ganowa na Overspeed (ODS), yana ba da ingantaccen shigarwar abin dogaro don ayyuka masu mahimmanci.
Zaɓuɓɓukan Kanfigareshan Mai Sauƙi:
Ƙididdigar Maɗaukakin Zaren Maɗaukaki: Yana ba da ma'auni guda biyu (misali, M10x1, M14x1.5, M16x1.5) da kuma daular (misali, 3/8' -24UNF, 1/2' -20UNF, 5/8' -18UNF) Zaɓuɓɓukan ƙira
masu yawa don daidaitawa daban-daban na ƙirar ƙirar ƙira don daidaitawa daban-daban na zaɓaɓɓun zaɓuka na C. Ana samun kebul na haɗakar firikwensin a cikin tsayin mitoci daban-daban daga mita 0.5 zuwa mita 10 Ana iya haɗa shi da tsayin igiyoyi daban-daban na EA902 don cimma Tsayin Tsawon Tsarin Tsari (TSL) na 1m, 5m, ko 10m
Na zaɓin Kariya: Yana ba da shinge mai sassauƙa na bakin karfe tare da lalatawar sinadarai na FEP. don kebul Hakanan zaɓi shine IP172 Interconnection Protector don samar da kariya ta injiniya da muhalli don haɗin haɗin tsakanin firikwensin da kebul na tsawo.
