Chipatara chedu chakaunza Shimadzu SCT 3000TX CT scanner mu 1989. Iyo yepamusoro-voltage yechipiri yedunhu rechigadziro ichi yakashongedzerwa ne tetrode, uye yakakwirira-voltage capacitor inoshanda pasi pe voltage feedback mode. Muna 1995, iyo cathode-side high-voltage capacitor (inozonzi "C2") yakatambura. Nekuda kwekuomerwa kwekuwana zvidimbu zvinotsiva panguva iyoyo, takaraira zvinhu zvitsva tichitumira C2 yakashata kune basa rekugadzirisa kuti rigadziriswe.

1. Kugadzirisa Verification uye Kutanga Kushanda kweCapacitor

• Mounting Configuration: Iyo C2 yakagadziriswa yakadzoserwa padivi rekutanga cathode, nepo capacitor nyowani yakaiswa padivi reanode. Zvichakadaro, iyo yekutanga anode-side capacitor (inozonzi "C1") yakabviswa kwenguva kuti ichengetedzwe.
• Operation Check: Iyo yakakwirira-voltage yedunhu yakagadziriswa, uye iyo capacitor yakashanda kazhinji. A 15-zuva rinopfuurira kushanda bvunzo yakasimbisa kugadzikana uye kuvimbika kweC2.
• Yenguva refu Operation Plan: Kuti kuwedzere kushanda kwemidziyo, C1 yakachengetwa munzvimbo yakakodzera (ine tembiricha uye humidity control), nepo C2 yakachengetedza mamiriro ayo ekushanda.

2. Kutadzazve kweC2 uye Zvinetso muKutsiva neC1

• Abnormal Measurement Results: Iyo yakayerwa capacitance yaingova 0.2μF, yakaderera zvakanyanya pane yezita reti ye0.5μF. Izvi zvakaratidza zvisizvo zviratidzo zvehunyanzvi uye kusashanda zvakanaka kweC1.

3. Technical Background yeCapacitor uye Repair Strategy

3.1 Maitiro eKushanda uye Kukundikana kweMechanism Ongororo yeC1

• Yakanakisa yekuzviporesa zvivakwa uye yakakwira-voltage dhizaini ine yakanyanya rated voltage ye125kV.
• Inotarisisa mabasa maviri akakosha mune yakakwira-voltage polarization wedunhu: voltage regulation uye kuchengetedza simba.

• "Mamiriro emuviri anoshanduka" nekuda kwekuchengetedza kwenguva refu: Dielectric (polypropylene film) mukati me capacitor inogona kunge yakasvibiswa zvishoma panguva yekuchengetedza kwenguva refu, zvichiita kuti kuderedzwa kwechinguva chiduku.
• Kuganhurirwa kwezviridzwa zvekuyeresa: General capacitance metres chiyero chakavakirwa paDC bhatiri yekuchaja/kuburitsa, iyo inosiyana neyakayerwa voltage uye mamiriro azvino mumaseketi chaiwo e-high-voltage polarization, zvingangoita kutadza kunyatsoongorora mashandiro echokwadi eC1.

4. Charge Activation Procedure uye Migumisiro yeC1

4.1 Equipment Kutanga uye Kuchaja Activation Matanho

4.2 Kushanda Kusimbisa Mushure meKushanda

• Basic Operation Check: Verified kV positive-negative balance, yakatariswa zvikanganiso zvemudziyo, uye yakaitwa yakajairika yekudziya-up maitiro.
• Kuongororwa Kwemhando Yemifananidzo: Yakasimbiswa kuratidzwa ikozvino mazinga uye yakaitwa calibration uchishandisa mvura phantom. Mhedzisiro yakaratidza mapikicha akagadzirwa nemazvo, zviratidziro zvezviridzwa zvakatsiga, uye pasina kubuda kwe-high-voltage kana ruzha rusina kujairika.
• Clinical Operation Check: CT scans yezvikamu zvakasiyana-siyana zvemuviri wevarwere zvakasimbisa kushanda kwechigadzirwa chemazuva ose, nemhando yemufananidzo inochengetedza nhanho imwe chete isati yakundikana.

5. Zvidzidzo Zvakawanikwa Kubva Munyaya Iyi

5.1 Mabhenefiti Ehupfumi uye Ekushanda

• Kuderedza Mutengo: High-voltage capacitors ndiwo musimboti wezvikamu zveCT scanners, uye kuunza matsva kunoda mari yakawanda. Mhosva iyi yakawana mari yekuchengetedza zvakanyanya kuburikidza nekugadziriswa kwezvinhu zvisina kunaka uye activation yezvikamu zvakachengetwa zvenguva refu.
• Yakaderedzwa Maintenance Downtime: Nepo kutenga zvinhu zvekunze kuchiwanzotora nguva yakareba, kugadzirisa nekushandisazve zvinhu zviripo kwakaderedza nguva yekudzikira kwemidziyo uye kuderedzwa kwemaitiro emakiriniki.

5.2 Maonero Ehunyanzvi

• Activation Inogoneka Yenguva Yakareba Yakachengetwa Zvikamu: Kunyange kana high-voltage capacitors ichiwana capacitance kuderedzwa nekuda kwekuchengetedza kwenguva refu, nhanho-nhanho yekuchaja activation munzvimbo chaiyo yedunhu inogona dzimwe nguva kuvadzosera kune yakayerwa kugona kwekushandisa kwakajairika.
• Kusarudzwa Kwakakodzera Kwezviridzwa zvekuyera: Kuongorora mashandiro echikamu kunoda kuyerwa nharaunda padyo nemamiriro chaiwo ekushanda. Panzvimbo pekutonga chikamu chemhando yakavakirwa pane zvakajairwa capacitance mita zvabuda, zvakakosha kusanganisa nemiedzo yekushanda mumaseketi chaiwo.

6. Kubvunza