Man B&W S50MC-C8-TII, Руководство по проекту, Страница: 273 / 403

MAN B&W 14.06
Page 1 of 1
MAN Diesel
MAN B&W MAN B&W S50MC-C, S50ME-C, S50ME-B 198 76 93-3.0
The scavenge air box is continuously drained
through ‘AV’ to a small pressurised drain tank,
from where the sludge is led to the sludge tank.
Steam can be applied through ‘BV’, if required, to
facilitate the draining. See Fig. 14.06.01.
The continuous drain from the scavenge air box
must not be directly connected to the sludge tank
owing to the scavenge air pressure.
Fig. 14.06.01: Scavenge air box drain system
The pressurised drain tank must be designed to
withstand full scavenge air pressure and, if steam
is applied, to withstand the steam pressure avail-
able.
The system delivered with and fitted on the engine
is shown in Fig. 14.03.02 Scavenge air space,
drain pipes.
079 61 03-0.2.0
Deck/Roof
Drain
tank
DN 50 mm
DN 65 mm
Sludge tank
for fuel oil
centrifuges
Orifice 10 mm
DN 15 mm
BV AV
Steam inlet pressure 310 bar.
If steam is not available, 7 bar
compressed air can be used.
DN 50 mm
Normally closed.
Tank to be emptied
during service with
valve open.
Normally open.
To be closed in case of fire
in the scavenge air box.
Min. distance
1,000 mm
Min. 15°
The letters refer to list of ‘Counterflanges’
Scavenge Air Box Drain System
No. of cylinders
5-6 7-9
Drain tank capacity 0.3 m
3
0.4 m
3