Kev Txom Nyem Cov Khaub Ncaws Pob Tawb Tshav Pob Hluav Taws Xob Tshaj nrog Cycloconverter Tsav Siv Hauv Daim Ntawv Thov Milling
Kev Txom Nyem Cov Khaub Ncaws Pob Tawb Tshav Pob Hluav Taws Xob Tshaj nrog Cycloconverter Tsav Siv Hauv Daim Ntawv Thov Milling
Cycloconerverters yog ac - {}} potors conving {}} zaus {{4 4}} cov zis ntau zaus. Lawv tsim kom muaj cua sov tseem ceeb vim:
Lub zog poob: Feem ntau 2-5% ntawm cov hwj huam tawm tswv yim (piv txwv li, 500 kw cycloconverter tsis kam 10-25 kW ntawm tshav kub).
High tam sim no ceev: cov thyristors thiab hluav taws xob semiconductors (ua rau kev sib tshuam kub uas yuav tsum nyob hauv qab 125-150℃(nyob ntawm seb lub cuab yeej).
Cov khoom siv sib quas ntus sib txawv: milling suav nrog kev sib txawv txiav cov rog, ua rau muaj zog hloov lub zog xav tau thiab ua kom sov tsis sib xws.
Cua txias yog qhov tseem ceeb los tiv thaiv cov thermal khiav khiav, semiconductor tsis muaj teeb meem, thiab downtime. Raj fee lub tshav kub sib pauv tau zoo - reeited ntawm no vim tias lawv muaj txias heev rau cov chaw muaj kev lag luam nrog chav tsawg.
Txhawm rau sib xyaw ua ke nrog tus cycloconverter hauv daim ntawv thov milling, cov cua sov ua kom muaj raws li cov kev ntsuas no:
A. Thermal Kev Ua Haujlwm Sib Tw
Cua sov disspipation muaj peev xwm: Tus qauv yuav tsum tau muab lub zog loj tshaj thauj (suav nrog cov kev poob siab thaum hnyav milling). Piv txwv li, 25w kev thauj khoom kub yuav tsum muaj kev sib pauv rau 30-35 KW (10-20% kev ruaj ntseg npoo) rau account rau qhov kub qhov kub.
Delta - t (Δt) kev ua kom zoo dua: Cov kev sib pauv yuav tsum ceev qhov sib txawv me me (piv txwv li, glycol {}} dej sib tov) thiab huab cua ambient. Lub hom phiaj tau ΔT ntawm 15-25℃ua kom tiav Cycloconverter lub coolant rov qab los ntawm<50°C (critical for semiconductor longevity).
Flow Tus Nqi: Cov kev sib pauv yuav tsum phim cov pa roj hmab txias (feem ntau 2-5 l / min rau kw ntawm tshav kub thauj khoom) kom tsis txhob muaj kev kub ntxhov dhau los (hom phiaj<30 kPa on the liquid side).
B. Cov khoom sib xyaw
Tubes: cycloconerverters feem ntau siv inhibited glycolited glycolited glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling glycoling (50/50 lossis 600) raws li coolant kom tiv thaiv khov thiab corrosion. Tubes yuav tsum tiv thaiv cov tshuaj tua:
Tooj liab lossis tooj liab - tsib caug (cuni): "mi m smerv) thiab sib xyaw nrog glycol.
Aluminium (3003 lossis 6061): lub teeb ci ntsa iab thiab tus nqi {{}}}}}}, chromate) yog glycol muaj cov ntxiv.
Fins: Yuav tsum tau hloov cua sov kom loj tuaj rau huab cua thaum muaj cov chaw tsis muaj av uas tsis muaj plua plav tsis huv (cov roj mist).
Aluminium (lovered lossis laim ntoom fins): siab thermal conductivity (205 w / min k) thiab yooj yim rau ua kom yooj yim rau kev tsim qauv.
Fin spacing: 8-12 fins ib nti (FPI) sib npaug ntawm Airflow (kom tsis txhob muaj kev tiv thaiv) thiab thaj chaw (rau qhov hloov cua sov). Lub qhov nqaim nqaim (12-15 FPI) txhim kho kev ua tau zoo tab sis txaus ntshai thaiv los ntawm cov chips hlau.
