Hauv kev tsim khoom lag luam niaj hnub no, cov cav hluav taws xob tau siv dav. Ntau hom, cov qauv hluav taws xob thiab cov theem hluav taws xob ntawm cov cav hluav taws xob tshwm sim tsis kawg. Cov hauv qab no yog cov lus piav qhia luv luv ntawm cov laj thawj rau kev ua haujlwm ib theem thiab kev tiv thaiv.
Kev faib tawm ntawm cov motors
Cov cav hluav taws xob muaj peev xwm muab faib ua DC motors, asynchronous motors thiab synchronous motors raws li cov qauv sib txawv thiab cov ntsiab cai ua haujlwm. Synchronous motors kuj tseem tuaj yeem muab faib ua cov hlau nplaum tas mus li synchronous motors, reluctance synchronous motors thiab hysteresis synchronous motors. Asynchronous motors muaj peev xwm muab faib ua induction motors thiab AC commutator motors. Induction motors kuj tseem muab faib ua peb-theem asynchronous motors, ib-theem asynchronous motors thiab shaded pole asynchronous motors. AC commutator motors kuj tseem muab faib ua ib-theem series motors,AC thiab DC ob lub hom phiaj motors thiab repulsion motors.
Kev phom sij los ntawm kev ua haujlwm ib theem ntawm peb theem asynchronous motors
Cov cav asynchronous peb theem muaj ob txoj kev txuas hluav taws xob: Y-hom thiab Δ-hom. Thaum lub cav txuas nrog Y ua haujlwm hauv ib theem, qhov tam sim no hauv theem tsis txuas yog xoom. Cov tam sim no theem ntawm ob theem ntxiv dhau los ua cov kab tam sim no. Tib lub sijhawm, nws yuav ua rau xoom taw tes thiab nws qhov hluav taws xob theem kuj tseem yuav nce ntxiv.
Thaum lub cev muaj zog nrog Δ-hom xov hlau raug txiav tawm sab hauv, lub cev muaj zog hloov mus rau hauv V-hom xov hlau nyob rau hauv qhov kev ua ntawm peb-theem fais fab mov, thiab ob-theem tam sim no nce 1.5 zaug. Thaum lub cev muaj zog nrog Δ-hom xov hlau raug txiav tawm sab nraud, nws yog sib npaug rau ob-theem windings txuas nrog series thiab peb pawg ntawm windings txuas nrog parallel ntawm ob-kab voltages. Tam sim no nyob rau hauv obcov xov hlautxuas nrog hauv series tseem tsis tau hloov pauv. Qhov tam sim no ntxiv ntawm pawg thib peb yuav raug nce ntxiv 1.5 zaug.
Hauv kev xaus lus, thaum lub cev muaj zog ua haujlwm hauv ib theem, nws cov hluav taws xob winding nce sai, thiab cov winding thiab cov hlau casing kub sai, hlawv cov rwb thaiv tsev winding thiab tom qab ntawd hlawv lub cev muaj zog winding, cuam tshuam rau cov haujlwm tsim khoom ib txwm muaj. Yog tias qhov chaw ib puag ncig tsis zoo, qhov chaw ib puag ncig yuav sib sau ua ke. Muaj cov khoom hluav taws xob uas tuaj yeem ua rau hluav taws kub thiab ua rau muaj teeb meem loj dua.
Ua rau lub cev muaj zog ua haujlwm ib theem thiab kev tiv thaiv
1. Thaum lub cev muaj zog tsis tuaj yeem pib, muaj lub suab nrov nrov, thiab lub plhaub muaj qhov kub nce lossis qhov ceev txo qis thaum lub sijhawm ua haujlwm, thiab qhov kub nce ntxiv, lub zog fais fab yuav tsum raug txiav tam sim ntawd thiab qhov ua rau tsis ua haujlwm yuav tsum tau ua tib zoo nrhiav. Txheeb xyuas seb qhov xwm txheej saum toj no puas yog vim tsis muaj theem.
2. Thaum cov xov hluav taws xob ntawm lub voj voog tseem ceeb nyias dhau lossis ntsib kev puas tsuaj sab nraud, lub zog peb-theem ntawm lub cev muaj zog yuav ua rau kev ua haujlwm ib-theem vim yog kev hlawv theem lossis lub zog sab nraud ntaus. Lub peev xwm nqa tau zoo ntawm cov xov hluav taws xob tseem ceeb ntawm lub cev muaj zog yog 1.5 txog 2.5 npaug ntawm qhov tam sim no ntsuas ntawm lub cev muaj zog, thiab lub peev xwm nqa tau zoo ntawm cov xov hluav taws xob muaj feem cuam tshuam nrog txoj kev tso ntawm cov xov hluav taws xob. Tshwj xeeb tshaj yog thaum nws sib luag lossis sib tshuam nrog cov kav dej kub, qhov sib nrug yuav tsum ntau dua 50cm. Lub peev xwm nqa tau zoo ntawm cov xov hluav taws xob uas tuaj yeem khiav ntev ntawm 70 ° C kub nce feem ntau tuaj yeem kuaj xyuas los ntawm phau ntawv qhia ntawm tus kws hluav taws xob. Raws li kev paub dhau los, lub peev xwm nqa tau zoo ntawm cov xov tooj liab yog 6A ib square millimeter, thiab cov xov hlau txhuas yog 4A ib square millimeter. Tsis tas li ntawd, cov pob qij txha hloov pauv tooj liab-txhuas yuav tsum tau siv thaum cov xov tooj liab-txhuas sib txuas, kom tsis txhob muaj kev sib txhuam ntawm cov khoom siv tooj liab-txhuas thiab cuam tshuam rau qhov tsis kam ntawm cov pob qij txha.
3. Kev teeb tsa tsis raug ntawm lub qhov hloov cua lossis lub cuab yeej tiv thaiv xau yuav ua rau lub cev muaj zog ua haujlwm ib theem. Yog tias qhov kev teeb tsa ntawm lub qhov hloov cua me dhau, nws yuav yog vim qhov hluav taws xob loj dhau los hlawv cov kev sib cuag sab hauv ntawm lub qhov hloov cua, ua rau qhov kev tiv thaiv ntawm qhov sib cuag theem loj dhau, tsim kev ua haujlwm ntawm lub cev muaj zog ib theem. Qhov hluav taws xob ntsuas ntawm lub qhov hloov cua yuav tsum yog 1.5 txog 2.5 npaug ntawm qhov hluav taws xob ntsuas ntawm lub cev muaj zog. Tsis tas li ntawd, thaum lub cev muaj zog ua haujlwm, nws yuav tsum tau saib xyuas seb qhov kev teeb tsa ntawm lub qhov hloov cua me dhau, lossis qhov zoo ntawm lub qhov hloov cua nws tus kheej muaj teeb meem, thiab yuav tsum tau hloov lub qhov hloov cua tsim nyog.
4. Cov kab txuas ntawm cov khoom hauv lub txee tswj tau hlawv tawm, uas yuav ua rau lub cev muaj zog khiav hauv ib theem. Cov laj thawj rau cov kab txuas hlawv yog raws li nram no:
① Cov kab txuas nyias dhau, thaum lub zog hluav taws xob ntau dhau ntawm lub cev muaj zog nce ntxiv, nws yuav hlawv cov kab txuas. ② Cov khoom sib txuas ntawm ob qho kawg ntawm cov kab txuas tsis sib cuag zoo, ua rau cov kab txuas kub dhau, yog li hlawv cov kab txuas. Muaj cov tsiaj me me raug puas tsuaj, xws li nas nce ntawm ob kab, ua rau luv luv ntawm cov kab thiab hlawv cov kab txuas. Kev daws teeb meem yog: ua ntej pib txhua qhov kev ua haujlwm, lub txee tswj yuav tsum tau qhib kom zoo zoo xyuas seb xim ntawm txhua kab txuas puas tau hloov pauv, thiab seb daim tawv nqaij rwb thaiv tsev puas muaj cov cim hlawv. Cov kab hluav taws xob tau nruab nrog raws li cov khoom thauj tam sim no ntawm lub cev muaj zog, thiab cov khoom sib txuas tau txuas nrog raws li cov txheej txheem xav tau.
Kev kuaj mob
Hauv kev tsim kho, peb yuav tsum ua raws li cov lus qhia ntawm ntau yam txheej txheem tsim kho kom ntseeg tau tias qhov zoo ntawm kev teeb tsa. Kev saib xyuas tsis tu ncua ntawm ntau yam khoom siv thiab kev tshuaj xyuas thiab kho tsis tu ncua thaum lub sijhawm ua haujlwm yuav zam kev poob thiab kev phom sij tsis tsim nyog los ntawm kev ua haujlwm ib theem ntawm lub cev muaj zog.
Lub sijhawm tshaj tawm: Tsib Hlis-30-2024