GOVERNOR UNIT SERVICE

I SERVOMOTOR WORK CONDITION

Stroke volume 1 servomotor

Volume of each Servomotor : 0.0176 m3

17.6 L (Ref: SR-S2-A080)

Oil consumption for 2 servomotor : 0.0352 m3

35.20 L

Air consumption by 2 governor : 2.2176 m3

2217.60 NL

II Pressure Oilcan for Governor

Tank volume : 1.6 m3

1600 L (Ref: J0626700)

Air volume : 1.07 m3

1070 L

Oil Volume : 0.53 m3

530 L

Level Switch High of Oil : 0.67 m 26.38 inch

Level Switch Low of Oil : 0.535 m 21.06 inch

Level Switch Low Low of Oil : 0.318 m 12.52 inch

III Working Condition

Maximum working pressure : 6.3 Mpa 63 bar

Normal oil pressure : 6.1-6.3 Mpa 61-63 bar

Pressure Switch High (PSH) : 6.3 Mpa 63 bar

Pressure Switch Low (PSL) : 6.1 Mpa 61 bar

SHAFT SEAL UNIT SERVICE

I Working Condition

Working pressure of compressed air : 0.7 Mpa 7 Bar (Ref: Chapter 5 Technical Agreement)

Air consumption for service seal belt : 6 L/time

Air required for once service seal belt (per unit) : 42 NL/time

Air consumption for Pneumatic Devices :

II Air Supply by Air Receiver :

Air Volume for shaft seal : 0.042 m3

42 NL (Ref: Chapter 5 Technical Agreement)

BRAKE DEVICE UNIT SERVICE

I Working Condition

Working pressure for brake : 0.7 Mpa 7 Bar (Ref: Chapter 5 Technical Agreement)

Piston volume of each brake : 1.8 L

Number of brake pad (per unit) : 6

Air required for once brake (per unit) : 0.0756 75.6 NL/time

TOTAL AIR FROM AIR RECEIVER (LOW PRESSURE) : 0.1176 m3

117.6 L

Safety factor for vessel design : 2

Air receiver volume required : 0.2352 m3

235.2 L

Air receiver volume design : 3 m3

3000 L

TOTAL AIR FROM MAIN AIR RECEIVER

Total air consumption (for 2 units) : 2.2176 m3

2218 L

MAR pressure before governor is working : 7 MPa 70 Bar

MAR pressure after governor is working : 6.7 MPa 67 Bar

Safety factor for Air Receiver volume design : 1.5

Air receiver volume required : 0.7392 m3

739.2 L

Air receiver volume design : 1.5 m3

1500 L

AIR COMPRESSOR

Number of compression stage, m : 4

Polytropic index which varies between 1.3 - 1.4, k : 1.35

Suction pressure (atmospheric pressure), Ps : 1 kgf/cm2

absolute

Discharge Pressure, Pd : 76 kgf/cm2

Discharge volume, Qs : 0.11 Nm3/min

Adiabatic power, Pad : 11 kW

Mechanical Efficiency, ηm : 0.75

Power required, Ps : 20 kW

Motor selected : 22 kW

COMPRESSED AIR REQUIREMENT

1612.0

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