01 G Lube Oil System

8/17/2019 01 G Lube Oil System

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MAN Turbo AG GF14 16-Jun-09 < >1

MAN TurboProduct Training

ube Oil

System


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Lube oil system

Location

On / in GT

baseframe

Within enclosureon the suction-

side

exception:

oil cooler


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Lube oil system

Function

Lubricate and cool

GG and PT plain

bearings bearings of the

power consuming

machine


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Lube oil system

Lube oil requirements

Exclusively mineral oil

Initial filling of the lube

oil tank by MAN TurboAG with Mobil DTE 846

ISO VG46

! Warning

Observe always our lube

oil specification

Any variation of the type

of oil used must first beagreed with MAN Turbo

AG.

Observe preservation

measures in case oflonger shutdowns


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Components of the lube oil system

1 Dual oil filter 2 Lube oil pumps 3 Oil demister

4 Filler nozzle 5 Lube oil heaters

Lube oil system

Main components

Oil tank integrated in

the GT baseframe

Three lube oilpumps

One oil cooler

One dual oil filter

One oil demister

One temperature

control valve

Two pressure

control valves

Instruments for

monitoring pressure,

level, temperature


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Lube oil tank

Location

integrated in the

GT baseframe

Function

total volume

greater than the

permissiblevolume of oil

charge

to permit the

oil to expandduring

operation,

to ensure

effective

degassing





7/40MAN Turbo AG GF14 16-Jun-09 < >7

Lube oil tank

Technical data

Max. Operating Capacity:

8,5 m3

Normal Operating Capacity: 7,5 m3

Min. Operating Capacity:

6,5 m3



Lube oil tank

Operation

inside the tank

perforated sheetsto remove the air

trapped in the oil

arranged at oil

return line. baffle plates

welded inside

increase dwell

time of the

returned oil

guarantee that

the total volume

of oil is used for

lubrication.






Lube oil tank

Operation

manholes used for

inspecting or

cleaning

filler nozzle

also to take oil

samples,

nozzles for measuring

oil temperature and

oil pressure and for

checking the level,

boreholes for

accommodating pumps.

oil drain connection in

the lower part of thetank.



Lube oil heaters

Location

electrical

heatersinstalled

horizontally

in the GT

baseframe orlube oil tank

Function

heat oil to

requiredminimum

temperature

before start

up






Lube oil heaters

Main parts

connection head with integrated

temperature controller and limiter, heating bundle with flange.

Operation

to inspect the heating bundle for deposits,

heating bundle can be removed from the

casing without having to drain off the oil.

temperature sensor can be removed

from the protective tube

extends into the heating bundle

without having to dismantle the heater.

Tank heater wiring diagram

TB = temperature limiter TR = temperature controller

Tank heater terminal housing

1 Power terminal 2 Temperature controller

3 T emperature limiter 4 C ontrol terminal



Lube oil heaters

Operation

temperature controller in connection

head of the heater to heat the oil to the start-up

temperature

temperature limiter

to switchoff when at maximumpermissible oil temperature








Lube oil heaters

i Note

Temperature limiter is not re-activated

automatically

after being triggered as a result of over

heating

Do

reduce average temperature by

approx. 10 °C

eliminate the cause of the fault,

re-activate limiter manually by pressinglimiter button








Lube oil heaters

! Warning

Heaters may only be operated with a full tank

To avoid overheating and damage to the heating element

Do not

temperature controller turn beyond scale range

to prevent the release of the temperature limiter.



Pumps

Main lube oil

Location

mounted in the front region of

GT baseframe and feed theoil through a suction pipe out

of the tank to the bearings.

Function

displacement screw pumps

feed oil through a suction

pipe out of the tank into the

supply line

Main lube oil pumps P121 and P122



Pumps

Main lube oil

Operation

during various operating phases only

one pump is running start-up,

shutdown,

load operation,

re-lubrication phase, pumps used alternately

with next start the previously not

used pump will be switched on



Pumps

Main lube oil

If pressure drops

second main lube oil pump is automatically activated

originally operating pump is switched off

If AC supply fails

emergency lube oil pump is switched on

to guarantee oil supply during the subsequent automaticshutdown process.

load operation with emergency lube oil pump is not

possible.

Safety valve at each pump. if pressure too high,

returns lube oil to lube oil tank to protect the pump.



Motors

Main lube oil pumps drive

Operation

three-phase AC motors

connected to pump viaelastic coupling



Pump

Emergency Lube oil supply

Location

installed at the front baseframe

Function

if main lube oil pumps or AC supply

fails

supplies oil through suction pipe

out of the tank and into supply line

protects the bearings against

damage

Operation

displacement screw pump

fed from a reliable electricity supply

safety valve at the pump

if pressure is too high lube oil is

returned into lube oil tank



Motor

Emergency Lube oil pump drive

Operation

connected to pump via an

elastic coupling.



Cooler

Location

piping to the oil

cooler at front sideof baseframe

Function

installed upstream

of the dual oil filter

cools the oil

supplied via the

temperature control

valve

Main components

heat exchanger and

AC fans

fans individually

switched on



MotorsOil cooler fans drive

Location

outside sound enclosure



Dual oil filter

Location

behind the temperature

control valve in the supplyline

in the front area of the GT

baseframe

access through door in theacoustic enclosure



Dual oil filter

Function

guarantees that only

filtered oil enters thebearing regions

dual oil filter is installed

In order to change the

filter differential pressure

monitored by

differential pressure

manometer

differential pressure

sensor.Dual oil filter

1 Pressure equalisation valve 2 Manometer

3 Ventilation 4 Filter cartridge

5 Change-over lever 6 Contaminated oil discharge

7 Clean oil discharge



Dual oil filter

Operation

without interrupting through

change-over valve filter change during operation

vent valve at each filter

and

drainage valve. pressure equalization

after filter change

Dual oil filter 1 Pressure equalisation valve 2 Manometer

3 Ventilation 4 Filter cartridge

5 Change-over lever 6 Contaminated oil discharge

7 Clean oil discharge


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Oil demister

Location

within the GT

enclosure on the left-hand

side in the area

of the power

turbine Main components

side-channel fan

filter casing

filter cartridge.


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Oil demister

Function

Side-channel fan generates

vacuum in filter housing

Air containing oil mist sucked infrom oil tank.

Air flows through the standpipe

in the intermediate area of the

filter casing

Through the filter cartridges

from inside to outside

Separated oil is drained out

along the outer surface of the

filter cartridge

flows back into tank Oil demister 1 Motor 2 Manual inlet valve 3 Side-channel fan

4 O-ring 5 Filter casing 6 Filter cartridge

7 Drain 8 Manometer 9 Stand i e


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Oil demister

Function

Manually operated valve to control the

inlet air is

fully open cannot be adjusted.

! Warning

Inlet valve position is set during

commissioning

Do not

change to prevent switch-off of the

installation as a result of a non-permissible tank

vacuum.Oil demister

1 Motor 2 Manual inlet valve 3 Side-channel fan

4 O-ring 5 Filter casing 6 Filter cartridge

7 Drain 8 Manometer 9 Stand i e


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Motor

Oil demister fan drive

Location

installed on filter

housing cover ofdemister

Operation

AC motor for

side-channelfan.

Components of the lube oil system1 Dual oil filter 2 Lube oil pumps 3 Oil demister



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Temperature control valve

Oil header temperature

Location

outside the enclosure

in supply line in front ofoil cooler

Function

the 3-way valve T e m p e r a t u r e c o n t r o l v a l v e A to o il fi lt e r B fr o m p u m p C v o m K ü h le r 1 C o n t r o l le r e l e m e n t 2 C o n t ro l le r e l e m e n t

A

B C


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Operation

rapid heating

during the firstminutes of operation

through cooler

bypass function.

constant oil temperature during operation

by conveying oil

through cooler

T e m p e r a t u r e c o n t r o l v a l v e

A to o il fi lt e r B fr o m p u m p C v o m K ü h le r 1 C o n t r o l le r e l e m e n t 2 C o n t ro l le r e l e m e n t

A

B C


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Operation principle

with wax expansion

elements and exhibits a proportional

control action.

temperature range of

control element isselected in accordance

with ambient

temperature in the place

of installation



A

B C


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Operation details

if oil temperature is

above temperaturerange

connection marked

”B” fully is closed

connection marked

”C” is opened

total oil volume

passes through oil

cooler.



A

B C


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Operation details


below temperaturerange

connection marked

”C” is fully opened

connection marked

”B” is closed.

total oil volume does

not pass through oil

cooler,

but directly to dualoil filter



A

B C


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Operation details


within temperature range connection marked

”C” opens to the

same extent as

connection ”B”

closes

uncooled oil is mixed

with the cooled oil



A

B C


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Lube oil systemOperation

Check of oil temperature in thetank during start-up sequence

if temperature too low, thelube oil heaters activatedand

start-up sequenceinterrupted

heating up the large oilvolume can take a fewhours

Testing of pumps and switch

on main lube oil pump that was not in operation

during the previousoperating phase.

Temperature control valve TCV Dual oil filter


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Lube oil system

Operation

Two oil pressure control

valves PCV

normal operation PCV127continuously reduce

approx. 25% of oil volume.

during the re-lubrication

phase or in the event of thefailure of the AC voltage

supply PCV124 activated,

lower lube oil header

pressure is sufficient.


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Lube oil system

Operation

Lube oil return

Under gravity

back into thelube oil tank

Through a

common

headermanifold

Oil demister

filters out large

amount of air

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Lube oil system

Post-lubrication phase

After switching off lube

oil is fed to the

bearings for severalhours in order to

dissipate the heat.

Prevents a

carbonization of the oilin the area around the

bearings.

L b il t


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Lube oil system

Instrument frame

Monitoring instruments

manometer,

pressure switch and pressure sensor

Housed at the front

right-hand side of a

frame within enclosure.

Manometers can be read

off through the glass

panel of the enclosure

door

01 G Lube Oil System

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