Farsamada alxanka inta jeer ee heerka sare ee gobolka adag iyo mabda'a shaqada

I.EARLY VACUUM TUBEES HORDHAC QALABKA SAREEYA

20 sano ka hor, ilaha tamarta-soo noqnoqda sare (oo loo yaqaan "Furnaces-sare") oo loo isticmaalo tuubooyinka alxanka iyo daaweynta kulaylka ee Shiinaha ayaa inta badan ahaa qalab leh tuubooyinka elektaroonigga ah (sidoo kale loo yaqaan "tuubooyinka vacuum") oo ah qaybaha ugu muhiimsan ee beddelka. Mabda'a aasaasiga ah ayaa lagu muujiyay shaxanka soo socda:

Warshadaha caadiga ah ee AC (saddex waji afar fiilooyin 380V / 50HZ gudaha Shiinaha) ayaa loo beddelaa AC la hagaajin karo oo u dhexeysa Oto 380V (soo noqnoqoshada aan isbeddelin) iyada oo loo marayo xakamaynta korantada ee thyristor AC, ka dibna kor u kacay ilaa 1 OOOOV koronto sare ah (soo noqnoqoshada aan isbeddelin) Transformer, ka dibna lagu saxo wareegga rectifier sare oo tobanaan kun oo danab sare ah DC, ka dibna oscillated by tube vacuum ilaa HF iyo HV hadda, ka dibna iyada oo loo marayo resonance barbar LC si ay u xoojiyaan oscillating current.iyo ka dib dhimista danab bixinta sahayda inductor loo isticmaalo. kululaynta tuubooyinka birta iyo kuwa kale ee workpieces iwm.

Ujeeddada xeerka korantada AC waa in la hagaajiyo gelinta iyo awoodda wax-soo-saarka si loo buuxiyo shuruudaha shaqada, iyo marka korantada la hagaajiyo sidoo kale waxay u baahan tahay inay ka dhigto korantada mid deggan si loo hubiyo xasilloonida soosaarka qalabka ee xaaladaha hawlgalka qaarkood.

Iyadoo ay ugu wacan tahay isticmaalka tuubada vacuum (waxyaabaha yar yar ee hadda jira), korantada waa in la kordhiyaa ama ma soo saari karto awood weyn. laakiin isla mar ahaantaana. danabka.

Sawirada hoose waa 600KW Single-loop vacuum tube oo soo noqnoqota iyo 100KW oo saddex geesood ah vacuum tube HF qalabka deminta.

Wershadaha alxanka tuubooyinka.waxaa weli jira tiro yar oo tuubooyinka faakuumka ah ee soo noqnoqda, halka beeraha sida deminta iyo brazing.

Maadaama tuubooyinka faakuumka ay iska leeyihiin alaabooyinka la tirtiray, halkan kuma soo bandhigi doono si faahfaahsan.

II.Mabda'a SHAQADA SOO-NOQOSHADA SARE EE SOLID-STE

Waxa loogu yeero "soo noqnoqoshada sare ee gobolka adag" waa sababtoo ah waxay isticmaashaa transistors (MOS field effect transistors or IGBT) sida qaybaha ugu muhiimsan ee inverter. Si ka duwan tuubooyinka vacuum waa godan (gudaha waxaa ka buuxa gaas sharaf leh, sidaas darteed waxaa loo yaqaan "gaseous") , transistors waa adag yihiin.

Soo noqnoqoshada heerka adag ee gobolka waa badeecad la cusboonaysiiyay oo ah tuubada faakuumka soo noqnoqda, wareeggeeda ugu weyna waxay la mid tahay inta jeer ee thyristor dhexdhexaad ah, laakiin way ka duwan tahay tuubada faakuumka soo noqnoqoshada sare. Mabda'a aasaasiga ah waa sida soo socota:

Saddex-waji AC ee caadiga ah (380V iyo inta jeer ee 50HZ ee Shiinaha) waxaa loo beddelaa korantada la hagaajin karo oo garaaceysa DC iyada oo loo marayo hagaajinta wareegga (SCR ama diode iyo IGBT), DC-gan waa la sifeeyaa ama mowjadda siman waxay noqotaa mid siman DC, ka dibna gal buundada inverter iyadoo la isticmaalayo transistor koronto weyn MOSFET ama IGBT) si ay u noqdaan kuwo soo noqnoqda oo sarreeya. Tani inta jeer ee soo noqnoqda sare waxaa la siiyaa resonance taangiga resonance load circuit loo isticmaali karaa kululaynta biraha Qalabku waa mid weyn ama mid yar, qaab-dhismeedka asal ahaan waa isku mid. Wareegga taangiga resonant waa qaab taxane ah ama qaab barbar socda

Marka la barbar dhigo tuubooyinka faakuumka soo noqnoqda ee sarreeya, heerka adag ee qalabka soo noqnoqda faa'iidooyinka sida soo socota:

1. Tayada alxanka wanaagsan: isbarbardhiggu wuxuu muujinayaa in tuubooyinka birta ah ee lagu alxanayo qalabka soo noqnoqda ee gobolka adag ay leeyihiin ballac alxanka iyo kulaylka isku midka ah, oo ay yar yihiin burooyinka gudaha iyo dibadda

2. Badbaadinta tamarta: Tijaabooyinku waxay muujinayaan isla tilmaamo alxankani uu badbaadin karo in ka badan 25% korontada marka la barbar dhigo qalabka tuubada vacuum

3. Badbaadinta biyaha: khasaare yar awgeed, uma baahna biyo qabow oo badan

4. Xajmiga yar iyo miisaanka fudud: sababtoo ah cabbirka yar ee qaybaha muhiimka ah (MOSFET) iyo sidoo kale alxanka transformer. Markaa mugga guud wuxuu ka badan yahay 50°/4. Ka yar qalabka tuubbada faakuumka ee isla qeexitaannada

5. fududahay in la shaqeeyo: koronto la'aan, danab ugu sarreeya kama badna dhawr boqol oo volts, sidaas darteed ma keeni doonto dhaawac shakhsi ah