Muhandislik vositasi #033 (bepul)
Tebranish manbai aniqlovchisi
Interactive diagnostic tool — enter vibration frequency as order of running speed to identify likely fault sources for rotating machinery.
Diagnostika natijalari
To'liq chastota–nosozlik ma'lumotnomasi
Tebranish chastotasini tahlil qilish
Har qanday mexanik nosozlik val aylanish tezligiga bog'liq xarakterli chastotalarda tebranish hosil qiladi. Tebranish spektridagi dominant chastotani aniqlash va uni val tezligining tartibi (karrali) sifatida ifodalash orqali eng ehtimoliy nosozlik manbai aniqlanishi mumkin.
Tartibni hisoblash
Where f_vibration Hz da o'lchangan dominant chastota va RPM val aylanish tezligi.
Keng tarqalgan nosozlik chastotalari
| Order | Frequency | Primary Source | Qo'shimcha ko'rsatkichlar |
|---|---|---|---|
| 1x | Shaft speed | Unbalance | Barqaror faza, tezlik kvadratiga proporsional |
| 1x | Shaft speed | Bent shaft | Yuqori o'qiy tebranish, faza barqaror |
| 2x | Val tezligining 2 karrasi | Misalignment | Yuqori o'qiy tebranish, muftaning ikki tomonida faza 180° farq qiladi |
| 3x | Val tezligining 3 karrasi | Kuchli noto'g'ri markazlanish | Bir nechta garmonikalar mavjud |
| 0.42–0.48x | Sub-synchronous | Oil whirl | Siljish podshipniklari, tezlikka bog'liq |
| 0.5x | Yarim val tezligi | Bo'shashish / ishqalanish | Kasr pastki garmonikalar |
| Ko'p garmonikalar | 1x, 2x, 3x… | Mexanik bo'shashish | Aylanish tezligining ko'p garmonikalari |
| Non-synchronous | BPFO, BPFI, BSF | Podshipnik nuqsonlari | Aylanish tezligi bilan modulyatsiyalangan |
| Z x RPM | Blade pass | Flow issues | Pulsatsiya, kavitatsiya |
| Z x RPM | Gear mesh | Gear problems | Yon chastotalar qaysi tishli g'ildirakni ko'rsatadi |
| Tarmoq chastotasining 2x garmonikasi (100/120 Hz) | Sobit chastota | Electrical | Quvvat o'chirilganda yo'qoladi |
Faza burchagi bo'yicha qo'llanma
Faza tahlili muhim ahamiyatga ega for distinguishing faults at the same frequency. At 1x: stable phase = unbalance, 180° across coupling = misalignment, unstable phase = looseness. Always use a tachometer reference.
Amaliy Misol
Given: Running speed = 1500 RPM, Dominant frequency = 75 Hz
Running speed frequency = 1500 / 60 = 25 Hz
Order = 75 / 25 = 3.0x
Asosiy shubhali omil: Jiddiy noto'g'ri hizalanish yoki mexanik bo'shashish
Tavsiya etiladi: Muftaning hizalanishini tekshiring, mahkamlash boltlarini ko'rib chiqing, poydevorni tasdiqlang
⚠️ Note: Ushbu vosita umumiy nosozlik chastotasi munosabatlariga asoslanib yo'riqnoma beradi. Aniq tashxis qo'yish uchun faza ma'lumotlari, vaqtinchalik to'lqin shakli, orbit grafiklari, ish sharoitlari va mashina tarixi bilan taqqoslash talab etiladi. Har doim qo'shimcha o'lchovlar bilan tasdiqlang.
Spektral tahlil, tartib kuzatish va nosozliklarni diagnostika qilish imkoniyatiga ega professional tebranish analizatorlari. 50+ mamlakatda qo'llaniladi.
