Kev Ceev Pauv Hloov Ntawm Cov Piston Centrifugal

Lub twj centrifugal SIV tswj cov kev tswj ceev kom kho cov ndlwg, tsis yog tswj cov dej ntws nrog lub taub thiab lub hau ntswj thiab lwm txoj hau kev, nws tuaj yeem tau txais cov cuab yeej hluav taws xob txuag cov nyhuv. Kev hloov ua dua yog ib qho ntawm ntau txoj hauv kev tswj ceev. Vim hais tias ntawm txoj kev loj hlob sai ntawm kev siv tshuab thev naus laus zis thiab ntau qhov kev lag luam, nws tau siv ntau hauv kev lag luam.

Tam sim no, cov qauv tsim qauv ntawm cov twj centrifugal pom ntau zaus yog tswj kev tshem tawm cov khoom tsis muaj zog, uas muaj peev xwm ua kom tau zoo zog txuag feem ntau. Tab sis nyob rau hauv lub centrifugal cov lag luam lub lag luam, dhau li ntawm lub valve throttling poob, muaj motor poob, centrifugal twj poob, yeeb nkab network poob thiab lwm yam losses. Hauv kev xyaum, cov nuj nqis no cuam tshuam rau lwm tus. Vim li no, nws yuav tsum tau xav txog cov hauv qab no raws li txoj cai ntawm kev txaus siab ntawm qhov yuav tsum tau khiav txaus, thiaj li tau txais kev khiav hauj lwm ntawm qhov tsawg kawg nkaus zog noj ntawm lub tsev, thiab mam li txiav txim siab qhov tso tawm zaus ntawm cov zaus sib txuas. Raws li kev sib cuam tshuam ntawm kev sib txawv ntawm cov twj tso kua mis thiab lwm cov twj centrifugal thiab cov yeeb nkab sib txuas hauv qhov ua dej hauv lub cev, qhov ua haujlwm ntau zaus ntawm cov khoom sib hloov tag nrho yuav tsum tau tsim los txo cov kev siv zog ntawm lub cev. Daim ntawv no tsuas yog tham txog ib lub twj tso kua mis ntau hauv kev hloov twj ywm.

Kev pom zoo zaus zaus hloov kev tswj cov teeb meem ntawm ib theem centrifugal, qhov kev pom ntau zaus qhov kev tiv thaiv muaj peev xwm yuav qhia tau rau lub lav uas muab rau cov twj centrifugal uas tau muab, txiav txim siab ceev ceev ntawm lub centrifugal twj, cov ntim ntim noj tsawg kawg hluav taws xob.

Siv zog ntawm txoj haujlwm.

Vim li no, lub hwj chim siv hluav taws xob tau siv los ntawm chav tsev flux yog kev sib hloov thiab kev xaav ntawm lub twj centrifugal, uas yuav tsum tau ntsuas hauv kev xyaum. Lub nkhaus ntawm qhov nkhaus 3 thiab nkhaus 1 feem ntau yog qhov qhia ntawm l thiab l hloov feem.

Qhov system tseem ceeb khiav ntawm daim ntawv sib tw saum toj no yooj yim qhia txog lub tswv yim yooj yim ntawm lub sij hawm qhov chaw hloov khoom siv, nws txoj kev xav, ua kom tiav ntawm txoj cai ntawm electromechanical ntaus ntawm lub sensor, pom tau hais qhov nyiaj mus rau hauv lub sij hawm qhov chaw ntau. .

Yuav kom muab cov ntaub ntawv sib txawv ntawm cov qauv sib txawv, cov qauv hauv qab no yuav muab tau raws li cov ntaub ntawv xeem thiab theoretical analysis.

Centrifugal chestnut siab 2.1 txoj kev tsav tsheb sib xyaw ua haujlwm P tub ntxhais sib txuas ua ke tsis sib haum ua rau sib txawv ntawm lub network, thiab qhov sib txawv ntawm ntau lub zog nrog n cov nqi, kev sib hloov ntawm kev sib txheeb ntawm P, thiab V yog sib piv rau kev n, nti txawv zog.

Tus nqi uas sau kuj tsis tshua muaj, thiab qhov txo qis qis dua loj tshaj tus nominal ceev.

5 tsav lub cav ntawm qhov ua tau zoo ntawm qhov kev ua tau zoo ntawm cov cav ua tau zoo li qhov tau qhia hauv, yuav tsum ua kom yooj yim mus ua ob seem, thaum lub zog fais fab feem ntau, qhov loj dua lub zog fais fab, qhov siab tshaj qhov ua tau zoo tshaj (Ce), conic section tiaj , tus nqi me me ntxiv), xws li YK tuaj yeem xav txog qhov kev txhawj xeeb ntawm qhov khaus.

Yog li qhov centrifugal chestnut pom ntau zaus kev tswj teeb meem tswj kev ua haujlwm: hauv kev vaj huam sib luag txwv tsis pub muaj kev sib npaug raws li qhov mob ntawm () ~ (0), lav kom tau txais kev khiav dej Qs, nrhiav kom pom qhov nquag ua kom tsawg zog lub hom phiaj (2).

Qhov muab xam tias kev pom muaj qhov teeb meem tsis sib thooj yog raws li lub hauv paus ntsiab lus ntawm pawg lus dhau los. Thaum txoj kev xaav txhais tau tias yog Qs, nws yuav tsum tau txiav txim xyuas qhov kev sib hloov ceev n, thiab qhov tsawg kawg yog ua tiav raws li tus mob n + KQ> Qs. Kev sib npaug ntawm kev sib npaug siab yog qhov me me, negligible, los ntawm kev siv qhov sib txawv ntawm txoj kev muaj peev xwm tau txais kev daws cov tshuaj kom tau raws li peb lub sij hawm ntawm algebraic kab zauv yog qhov sib npaug ntawm qhov sib npaug (10):> ns yog qhov kev pom tseeb thiab cov zauv yuav tsum nrhiav kom paub cov tshuaj noj.

Txhawm rau txhais tau tias cov teeb meem kev daws teeb meem n '> n. Thaum khiav ntawm tus ceev xwm nominal, khiav Q Q> txo qis hauv qhov kev ua tau zoo.

Yog tias centrifugal chestnut hauv kev ceev n. Thaum lub siab nhuam tus yam ntxwv thiab ua tau zoo npaum li cas los ntawm qhov tus cwj pwm 1 'thiab 3', hais tias qhov haujlwm siab yog P, ces chestnut P 'yog qis, yog tias tsim nyog nce zuj zus mus rau n ", qhov centrifugal siab txaus tus cwj pwm thiab kev ua tau zoo ntawm chestnut feem los ntawm tus cwj pwm 1 "thiab 3", nws hais tias lub Nruab Nrab thaum lub zog khiav nrawm, qhov siab tau zoo tshaj qhov ntawm (3) hom ntsuas (gauge) yog tias LiXiao tau txais txiaj ntsig zoo tshaj qhov tsis tau ntawm AP, kev khiav ceev n, kev siv tshuab automation thiab daim ntawv thov, kev cai tswj hwm kev tswj hwm ntawm tsoom fwv 2001 kev sib tw kom ceev ceev txhua qhov kev tiv thaiv ntawm kev tiv thaiv Kev Txhim Kho Yooj Yimyu guang-jie fu (Heevongjiang anda 151400) kev tiv thaiv, tshaj txoj cai tiv thaiv tam sim no, kev ua hauj lwm txoj cai thiab kev ua tiav cov ntaub ntawv thiab nws txoj kev xwm txheej thiab kev ua haujlwm ntawm cov lus qhia thiab cov lus qhia.

Tus qauv ntawm asynchronous lub cev yog yooj yim thiab luv nqi, nws cov khoom kho tshuab tuaj yeem ua kom tau cov feem ntau cov cav tov ntau lawm, thiab nws qhov tseem ceeb yog nce hnub ntawm hnub. Nrog rau kev tiv thaiv ntawm electromechanical rau microcomputer, qhov kev kawm tsis zoo ntawm kev tiv thaiv ntaus ntawv yog siab dua thiab siab dua.

Qhov no system SIV tswj cov microcomputer tswj txhua qhov kev sib tw twv ceev fais cav, qhov sib tw ua ke, hais txog peb theem phom sij thiab lub tshuab rotor, feem ntau ntawm ob theem peb theem hluav taws xob, nrog rau lub zog ntawm stator winding ntawm lub zog ntau zaus, fais fab zaus thiab rotor los ntawm tes nyob rau hauv ib tug tes nyob rau hauv lub zog inverter zog, qhov voltage amplitude, zaus thiab theem raug hloov raws li cov kev xav tau ntawm kev khiav hauj lwm. Qhov zoo ntawm cov kev tswj lub digital yog nyob rau hauv nws qhov kev ua haujlwm ntawm tus kheej, piv txwv li thaum lub sijhawm khiav ntawm tus tsav, txij li qhov kev ua haujlwm kev kuaj xyuas tuaj yeem xyuas cov haujlwm ntawm qhov module thiab hauv online, koj tuaj yeem soj ntsuam txhua qhov tsis, los ntawm kev tsim nyog kho vajtse thiab software kom paub tseeb txog kev tswj ntawm AC lub cev. Tsab ntawv no qhia txog kev tiv thaiv thiab kev tiv thaiv kev tiv thaiv ntawm kev tiv thaiv txog kev tiv thaiv ntawm kev tiv thaiv thiab qis dua (overpressure) nyob rau sab rotor ntawm lub cev.

Hauv kev khiav hauj lwm ntawm peb theem phase asynchronous, qhov phenomenon ntawm tib theem ua haujlwm yog raug rhuav tshem vim yog tim txhaum. Ntau tshaj li ntawm 80% ntawm lub cev qhov hlawv yog qhov ua haujlwm rau cov haujlwm ib-theem. Yog li ntawd, nws tseem ceeb heev uas yuav tau siv kev ntsuas kom tiv thaiv tau lub cev.

Qhov theem peb theem siab ntawm lub rotor sab synchronous transformer siv raws li lub teeb liab tawm ntawm qhov kev tiv thaiv kev txhaum tiv thaiv, raws li qhia. Thaum twg peb theem yog ib txwm, lub hauv paus taw kev muaj peev xwm yuav qev, thiab lub kaw raug kaw Ji seem kaw, thiab cov qhov tso tawm kawg tsis tawg. Thaum twg muaj tsawg kawg yog ib theem kev sib txuas hauv theem peb theem, lub hauv paus taw kev ntawm qhov kev tawm tswv yim dav dav yog tsis xoom. Tom qab lub choj diav rectifier thiab limcitor lim, cov zis ntawm lub davhlau thawv qhov dav hlau tawg. Ntseeg, ntawm qhov one tes, yog rhuav tshem rau qhov system microcomputer rau kev txheeb xyuas thiab kev ua haujlwm, ntawm qhov tod tes, tus triode T1 collector load nquag kaw relay J1 disconnect tsav lub rotor sab nyiam ntawm AC contactor coil circuit, ac contactor rau disconnect rotor Circuit Court.

Nyob rau hauv kev ntsuas hluav taws xob (overvoltage) kev tiv thaiv, qhov voltage ntawm rotor sab synchronous transformer, xws li A theem voltage, yog A zog zoo dua txuag nyiaj.

Tsis tas li ntawd, los ntawm qhov ua tau zoo ntawm lub cav, thaum lub zog qev zog qis dua M, qhov tsis zoo ntawm qhov kev tswj xyuas tsis sib xws yog tsis siab vim tias qhov tsis zoo ntawm lub tshuab.

Thaum twg tus ceev n ntau dua thiab cov ua haujlwm q yog qis tshaj qhov kev pom ntawm qhov pom ntawm lub npe, cov pa algorithm yog kev pom kev sib txuas ntau zaus. 2. Hauv kev ua hauj lwm khiav qis>, txoj kev daws cov kev hloov ntawm kev hloov ntau zaus yuav tsum tau ntsuam xyuas los ntawm qhov ua kom lub hom phiaj zoo (); 3. Yog tias lub zog qhov hluav taws xob tsawg tshaj li N1, qhov kev hloov khoom siv hloov tau me ntsis nyiaj.