Ubuchwepheshe be-Solid high frequency welder kanye nomgomo wokusebenza

I.I.EARLY VACUUM TUBES IZIsetshenziswa EZINGAPHEZULU KAKHULU ISINGENISO

Eminyakeni engu-20 edlule, imithombo yamandla avela imvamisa ephezulu (evame ukwaziwa ngokuthi "izithando zomlilo ezinemvamisa ephezulu") esetshenziselwa ukushisela amapayipi nokwelashwa kokushisa e-China ikakhulukazi kwakuyimishini enamashubhu kagesi (owaziwa nangokuthi "amashubhu e-vacuum") njengezingxenye eziyinhloko ze-inverter. Isimiso esiyisisekelo siboniswa emfanekisweni olandelayo:

I-AC yezimboni ezijwayelekile (izigaba ezintathu zezintambo ezine 380V/50HZ e-China) iguqulelwa ku-AC elungisekayo kusukela ku-Oto 380V(imvamisa engashintshiwe) ngesilawuli sikagesi se-thyristor AC, bese yenyuka ifinyelela cishe ku-1 OOOOV high voltage(imvamisa ingashintshiwe) nge i-transformer, bese ilungiswa yisekethe yokulungisa amandla kagesi aphezulu ibe amashumi ezinkulungwane kagesi aphezulu e-DC, yabe isizuliswa ngeshubhu ye-vacuum iye ku-HF kanye ne-HV yamanje, bese kuba nge-LC parallel resonance ukuze kukhulise amandla akhona. zokushisisa amapayipi ensimbi nezinye workpieces njll.

Inhloso yokulawula i-voltage ye-AC iwukulungisa amandla okufaka nawokukhipha ukuze ahlangabezane nezidingo zokusebenza, futhi lapho kulungiswa i-voltage nayo idinga ukwenza i-voltage iqine ukuze kuqinisekiswe ukuqina kwamandla okusebenza ngaphansi kwezimo ezithile zokusebenza.

Ngenxa yokusetshenziswa kwe-vacuum tube (izingxenye ezincane zamanje zamandla kagesi aphezulu), i-voltage kufanele inyuswe noma ayikwazi ukukhipha amandla amakhulu.kodwa ngasikhathi sinye.ukuze uvumelane ne-impedance encane ye-inductor, kuyadingeka ukunciphisa i-voltage.

Izithombe ezingezansi ziyi-600KW Single-loop vacuum tube high frequency kanye ne-100KW triple circuit vacuum tube okokusebenza kwe-HF yokucisha.

Embonini yokushisela amapayipi.kusenenani elincane lamashubhu evacuum aphezulu, kuyilapho emikhakheni efana nokucisha kanye ne-brazing.amashubhu evacuum aphezulu asasetshenziswa kakhulu.

Njengoba la mashubhu e-vacuum engeyemikhiqizo esusiwe, ngeke sethule ngokuningiliziwe lapha.

II.INQUBO YOKUSEBENZA YESIZWE ESIQINILE

Okubizwa ngokuthi "i-solid state high frequency" yingoba isebenzisa ama-transistors(i-MOS field effect transistors noma i-IGBT) njengezingxenye eziyinhloko ze-inverter.Ngokungafani namashubhu e-vacuum angenalutho(ingaphakathi ligcwele igesi ehloniphekile, ngakho-ke lingabizwa ngokuthi "igesi"). ,ama-transistors aqinile.

I-Solid state high frequency iwumkhiqizo obuyekeziwe we-vacuum tube imvamisa ephezulu, futhi umjikelezo wayo oyinhloko ufana ne-thyristor medium frequency, kodwa uhlukile ku-vacuum tube frequency high. Umgomo wayo oyisisekelo umi kanje:

I-AC yezigaba ezintathu ezijwayelekile (380V kanye ne-frequency 50HZ e-China) iguqulelwa ku-voltage eguquguqukayo i-pulsating DC ngokusebenzisa i-rectifying circuit(SCR noma i-diode ne-IGBT), le DC iyahlungwa noma i-flat wave ibe yi-DC ebushelelezi, bese ingena ebhulohweni elishintshayo ( usebenzisa i-transistor yamandla amakhulu i-MOSFET noma i-IGBT) ukuze ibe yamanje yefrikhwensi ephezulu. Lesi sakamuva se-high frequency current sinikezwa ku-tank circuit load resonance singasetshenziselwa ukushisisa insimbi.Amayunithi wamandla ebhuloho le-Inverter athatha isakhiwo se-modular.amamojula amandla ipheya ngalinye ayafana.kodwa inani lamamojula amandla asetshenziswayo liyahlukahluka kuye ngamandla emishini.W noma imishini inkulu noma incane, isakhiwo ngokuyisisekelo siyafana.Isekethe ye-resonant tank is in series or parallel form.ayikho i-voltage ephezulu futhi ayikho i-transformer step-down ephumayo.

Uma kuqhathaniswa namashubhu e-vacuum aphezulu, izinzuzo zemishini yemvamisa ephezulu zimi kanje:

1. Ikhwalithi enhle yokushisela: ukuqhathanisa kukhombisa ukuthi amapayipi ensimbi ashiselwe imishini yefrikhwensi ephezulu anobubanzi obuhlanganisiwe nokushisa, kanye nama-burrs ambalwa angaphakathi nangaphandle.

2. Ukonga amandla: ukuhlolwa kukhombisa ukuthi ukucaciswa okufanayo kwesishiseli kungonga ugesi ongaphezu kuka-25% uma kuqhathaniswa nemishini ye-vacuum tube

3. Ukonga amanzi: ngenxa yokulahlekelwa okuncane, akudingi amanzi amaningi okupholisa. Ngakho-ke kusebenzisa amanzi angaphansi kuka-50% kunemishini ye-vacuum tube enemininingwane efanayo.

4. Usayizi omncane nesisindo esilula:ngenxa yobukhulu obuncane bezingxenye eziyinhloko(MOSFET) futhi futhi awekho ama-welding transformer.filament regulators.matching coils.gate circuits.etc. Ngakho ivolumu iyonke ingaphezu kuka-50°/4. incane kunemishini yeshubhu ye-vacuum yokucaciswa okufanayo

5. Ukusebenza okulula: akukho voltheji, i-voltage ephezulu ingeqi ama-volts angamakhulu ambalwa, ngakho-ke ngeke kubangele ukulimala komuntu