Nkhani Yophunzira: Bweretsani High Voltage Ceramic Capacitor mu CT Machine

Kukhazikitsidwa kwa chipatala chathu zaka 1989 Shimadzu SCT 3000TX CT makina, high voltage secondary circuit tetrode
ndi mkulu voteji capacitor voteji maganizo mode, kwa zaka 1995 mbali cathode wa mkulu voteji capacitor (C2, chimodzimodzi m'munsimu) kusweka, chifukwa palibe mbali m'malo, kuyitanitsa nthawi yomweyo kuwononga capacitor kwa shopu yokonza kunyumba. Pambuyo polandila capacitor, ma capacitors kuti atsimikizire kukonza magwiridwe antchito, ndipo adzayiyika pambali ya cathode yapachiyambi, zatsopano zomwe zimayikidwa pambali ya anode ya capacitor, capacitor yoyambirira (C1, Pansi) ikuyikidwa; jombo mkulu voteji dera ndi udindo capacitance chipangizo ndi zachilendo, pambuyo masiku 15 ntchito mosalekeza, kusonyeza kuti C2 khola ndi odalirika. Kuti izi zitheke, zimasungidwa bwino kwa C1, C2 kuti zisunge momwe ntchito ikuyendera. Mu August C2 O1 kuwonongeka kachiwiri, kutsegula kufufuza kukhala C1 m'malo, wakhala opanda ntchito kwa zaka zisanu ndi ziwiri, capacitance kuyeza chipangizo kuyeza mfundo ziwiri mapeto a "T" ndi "N" kokha pakati pa mphamvu mtengo O. 2, cf mwadzina. mlingo wa O. 5 zomveka zokonda zotsika, kutanthauza kuti zizindikiro zaukadaulo za C1, kusachita bwino. Singano akhoza kugwiritsa ntchito mphamvu yake anaika, tinachititsa lalikulu ndulu kuyesa, pambuyo mayesero ambiri ndi yogwira mankhwala, izo kuchira yachibadwa nazipereka ndi kutulutsa boma, anaika ntchito.

1) Ntchito ya capacitor:

Pakuti odzazidwa mafuta mkulu-voltage capacitor metallized polypropylene filimu mpukutu wapangidwa ndi zabwino kudziletsa machiritso, voteji mpaka 125kV; mu high voltage sub-polar circuit, kuchokera kwa regulator. Ndi mphamvu yosungirako mphamvu. Ngakhale Cl osagwira ntchito nthawi yayitali, zoyezetsa zamtengo wapatali, molingana ndi njira zolephera za capacitor ndi zitsanzo, tikuganiza kuti izi zimangowonetsa capacitor wolumala wanthawi yayitali pansi pa thupi, ndi chipangizo choyezera mphamvu cha chida. "

Zipangizo, zomangidwa mu DC zoyang'anira batire ndi kutulutsa mphamvu zamagetsi zamagetsi, zamakono komanso zamagetsi sizingakhale zazing'ono kwambiri komanso zoyendera kwambiri. "dziko poyerekeza ndi kuzindikira komaliza kwamphamvu ndi zofooka zake, liyenera kuyesedwa kuti lidziwike.

2) Masitepe oyambitsa makina

(1) idzaikidwa mu high-voltage jenereta cathode C1side, fayilo ya boot kuchokera ku control cabinet sub-switch control, migodi yocheperako pang'ono, pang'onopang'ono kuwonjezera kuchuluka kwa kubwezeretsa kwa njirayo, malo omwe akuchititsanso kuti abwezeretse, akuyenera kuonedwa pano amatanthauza kV yotsitsa chiwonetserochi patebulo, kuti chiwongolere mtengo wocheperako, chingadulidwe kuchokera pachipangizo cha capacitor, Cl idayezedwa mphamvu, magetsi osungika, ngakhale osagwirizana ndi omwe anajambulidwa, kupita patsogolo kosasunthika, osati kwakukulu;

(2) tsegulani mtengo pamene mphamvu yapang'onopang'ono ya 100kV, mphamvu yoyezera C1 yakwera kufika ku O. 46, pamene ikuyitanitsa 12okV, mphamvu ya C1 yakhala pafupi ndi mlingo woyambirira, ndipo palibe mapu a anti-capacitor, ndiye, akhoza kuzimitsidwa C1 disconnect wiring. Kuyezanso mtengo wokhazikika wokhazikika ukadali pafupi ndi mtengo wake; (3) re-wiring ndi Mphamvu-mmwamba, pamene anode mbali ya capacitor C1 anamaliza ndi CT makina kulowa mlandu ndi boma kukonzekera, anagawa musayang'ane kV zabwino ndi zoipa bwino, palibe zachilendo ubale makina ndiyeno kuyambiransoko , maphunziro otenthetsera chizolowezi, kukula kwa kuwonekera panopa ku yachibadwa, calibration madzi phantom, chithunzi scanned molondola, tebulo zida zimasonyeza khola, mkulu-kuthamanga kutulutsa ndi phokoso lachilendo. Sesani magawo osiyanasiyana a makina ojambulira odwala CT scan kuti ayende bwino, mawonekedwe azithunzi monga kale.

3 Zimene taphunzira

(1) high voltage capacitor ndi gawo lofunikira la CT, ngati litawonongeka, kukhazikitsidwa kwa m'malo kumafunika, okwera mtengo, kuyimba kwa singano kwa osauka otere, kudziyambitsa okha kukonza. Kupulumutsa ndi ndalama, kufupikitsa nthawi yosamalira, phindu lazachuma ndi chikhalidwe Chambiri

(2) high-voltage capacitors kwa nthawi yaitali kunyumba, pambuyo kuchepa mphamvu, akhoza adamulowetsa ndi mlandu Mokweza kwa mphamvu oveteredwa, kubwerera ntchito yachibadwa, chipangizo ayenera kusewera ntchito.

Mukufuna kudziwa zambiri za makina a CT omwe amagwiritsidwa ntchito kwambiri, chonde lemberani gulu lathu la mainjiniya kuti mumve zambiri.