Mtce Alignment

  • View
    47

  • Download
    8

Embed Size (px)

DESCRIPTION

tentang mtce alignment

Transcript

  • ALIGNMENT POROS

  • SHAFT ALIGNMENTDefinisi shaft alignment ?

    Adjustment posisi relatif dari dua poros, ex. motor (driver &pompa (driven).Pengaturan posisi center pada kondisi operasi normal.

  • EFEK MISALIGNMENTROTATING MACHINERY

    Distorsi poros (Shaft) Konsumsi energi meningkat Mengurangi umur bantalan Kerusakan seal Shut down tidak terjadwal.

  • Misaligned

    seal terbuka kebocorandan kontaminasi

    Kondisi Aligned

  • JENIS MISALIGNMENT

    Parallelmisalignment

    Angularmisalignment

  • IDENTIFIKASI MISALIGNMENT

    Inspeksi peralatan Kerusakan awal pada bearing, seal, shaft, or coupling

    failures.

    Temperatur tinggi pada bearings atau minyak pelumass

    Kebocoran yang berlebihan pada seal

    Longgar baut pengikat kaki

    Longgar atau rusak baut pada kopling

    Pecah atau rusak karet pada fleksibel kopling

  • INSPEKSI PERALATAN

    Kerusakan tidak wajar pada kopling. Retaknya poros pada bagian bearing

    dekat kopling Penambahan pelumas yang berlebihan

  • DATA ANALISA VIBRATION

    Bentuk Vibrasi pada misalignment : Vibrasi pada arah aksial. High vibration at 1xTS or 2xTS in the

    spectrum. Signifikasi fase getaran 180 derajat

  • ANGULAR MISALIGNMENT

    High axial vibrationboth in 1X and 2Xrpm

    180 Out-of-phaseacross the coupling(axial axial).

    Spectrum

    Phase

  • PARALLEL MISALIGNMENT

    High radial vibration, 2x rpmoften larger than 1x rpm, butits height relative to 1x rpmis often dictated by couplingtype and construction

    180 Out-of-phase acrossthe coupling (horizontal horizontal or vertical vertical)

    Spectrum

    Phase

  • INFRARED THERMOGRAPH

  • FLEXIBLE COUPLING

  • FONDASI DAN BASEPLATE

    Bowed baseplate Skewed baseplate

  • PREALIGNMENT

    Sebelum melakukan alignment Kondisi fondasi. Kerusakan bearings, shafts, seals, couplings dll. Poros bengkok Softfoot

  • KOREKSI SOFT FOOT

    Soft foot = gap antara mesin dengan fondasi Diperbaiki sebelum alignment Soft foot menyebabkan tegangan pada baut dan bearing

  • KOREKSI SOFTFOOT

    Stress lines due to softfoot Pre-loading bearingdue to softfoot

  • KOREKSI SOFTFOOTBentuk umum softfoot

  • KORESKSI SOFT FOOT

    Dial IndicatorInstall a dial indicator on the footand watching the movementas you loosen the hold down bolt.

    Laser MethodMount the laser on the machine shafton either side of coupling

    Loosen individual bolt and retightenRead the live display

  • METODE ALIGNMENT

    Straight edge and feeler gauge Face & Rim Reverse Indicator

  • STRAIGHT EDGE

  • FEELER GAUGE

  • FACE & RIM

    PROSEDUR1. Attached bracket firmly to one shaft and position

    indicators on face and periphery of other shaft2. Zero the indicators at the 12 oclock position3. Rotate slowly the shaft and bracket arrangement through

    90 degrees interval stopping at the 3, 6 & 9 oclockpositions. Record each reading (+ or -)

    4. Return to the 12 oclock position to see if the indicators re-zero

    5. Repeat steps 2 through 4 to verify the first of readings

  • FACE & RIM

  • REVERSE INDICATORPROSEDUR1. Attached bracket(s) firmly to one shaft(s) and position

    indicator(s) on face and periphery of other shaft(s)2. Zero the indicator(s) at the 12 oclock position3. Rotate slowly the shaft and bracket arrangement through

    90 degrees interval stopping at the 3, 6 & 9 oclockpositions. Record each reading (+ or -)

    4. Return to the 12 oclock position to see if the indicator(s)re-zero

    5. Repeat steps 2 through 4 to verify the first of readings6. If one bracket was used, mount bracket on other shaft

    and repeat steps 1 through 5

  • REVERSE INDICATOR

  • DIAL INDICATOR MOUNTING

    The stem does not perpendicularto the reading surface

    Mounting buruk Mounting benar

  • DIAL INDIKATOR

    Dial tidak menyentuh

  • VALIDASI PEMBACAAN

    kiri + kanan = atas + bawah

  • PERPINDAHAN PERALATAN

    Vertical movement Horizontal movement

    Axial movement

  • CARA PEMBACAAN

    Apabila harga pergerakandial dari arah jam 12 ke jam6

    Aktuak offset = selish indikatir pada dial

    Axial view of the shaft

  • CARA MEMBACA

    Solusi matematis(+) = the unit has to be raised

    (add shim) for verticalmovement or moved to theleft for horizontalmovement

    (-) = the unit has to be loweredor moved to the right

  • CARA PEMBACAAN

    Solusi matematis

    (+) = the unit has to be raised(add shim) for verticalmovement or moved to theleft for horizontalmovement

    (-) = the unit has to be loweredor moved to the right

  • ALIGNMENT(Metode graphis)

  • Position of the driven shaft when the bottom reading is negative (-)

    ALIGNMENT(Metode graphis)

  • Position of the driven shaft when the bottom reading is positive (+)

    ALIGNMENT(Metode graphis)

  • Position of the driver shaft when the bottom reading is negative (-)

    ALIGNMENT(Metode graphis)

  • ALIGNMENT(Metode graphis)

    Position of the driver shaft when the bottom reading is positive (+)

  • LASER ALIGNMENT

  • LASER ALIGNMENT

  • LASER ALIGNMENT

  • Keuntungan Cepat Panjang poros sampai 20 m Ketelitian tinggi Perhitungan otomatis Pengaruh temp. kecil

    Kekurangan Dikalibrasi secara periodik

    LASER ALIGNMENT

  • TOLERANSI ALIGNMENT

    CSI RecommendedTolerances forShaft Alignment

    FixturlaserRecommendedTolerances forShaft Alignment

  • Ludeca RecommendedTolerances for ShaftAlignment John Piotrowski

    LASER ALIGNMENT