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High lube oil temp

solar centaur 40 gas turbine has got a tripping on high lube oil diff. Temp.

Between header and gearbox drain .

Could you people share your experiences in this regard on your machines?

Also what effect could it cause to the machine?

Thanks. Hoping great participation.

1 day ago

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8 comments

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Leonardo Galfano I'm srry I don't know the solar turbine.

Also is not enoug (for me ) only this information.

If the temperature in hte bearing is normal and in the drain is high the problem

probable came from the;

A-Insolation of drain(is the drain are in the hot area)

B- if the higt temprature are in the bearing and low in the drain the problem

came from the thermocouple.

C-I'm sorry but for give more better dettailsI need know better Solar machins I

talk for ge machins.

Regards

21 hours ago Like

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Leonardo Galfano PS

Please give me the temperature in the header Gear box bearing if Have and the

drain.

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In case don't the bearing temperature have ti take in consideration:

Vent gera box is good?

Ifyes have bearing problem or instruments problem

21 hours ago Like

Follow Ammar

Ammar Ibrahim Dear,

Solar gas turbine was tripped due high differential lube oil teperature between

gear box drain and header supply,at the same time all bearing temperature

rising above the limit

20 hours ago Like

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Ammar Ibrahim The diff. Temp. Is 40 f

20 hours ago Like

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Leonardo Galfano In this case the diferential are true. The instrument work

well.

In GE header the temperature are 55Celsius and the bearing temperature in the

gear box bearing around 60 to 80 Celsius.

Critical medium critical temperature is 115Celsius.

40 F is the desine temperature correct? becouse for me the diferential

temperature 40F is low.

You have thermocouple in the gearbox bearing?if yes please give me the bearing

temperature?

Vent of gear box is static or connected in the oil tank under negativetank

pressure?

20 hours ago Like

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Ammar Ibrahim We have RTD on gearbox drain, bearing temperature as follows

Brg1=90,brg2=81,brg3,4=78, and the temp.of lube oil enter the cooler was

84and discharge from cooler64

20 hours ago Like

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Ammar Ibrahim Vent of gear box iam not quit sure,I must check it , give me pls

the different.what can cause. But at the same time compressor bearing

temperature are within the limit

20 hours ago Like

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Leonardo Galfano Der Mr. Ammr

The vloue that you give me are un celsius? maybe yes.

So..Temperature from oil cooler are high and more high in the header.

Normal the bearing temperature oil are beetween 50 to 55Celsius and from

cooler not more at 50 52 Celsius becouse the thermostatic alve to be mixt with

bypass the return oil from cooler to oil from tank.

(this is the temperature in Hevy gas turbine with whit metal bearing)

In this case have to looking the oil cooler (if air cooler if the fan work well and if

the bandle tube eternal side are clean.

In case have water cooler looking the D.T.water temperature in and out if good

orn not if the water temperature is in and out is the same looking the water

thermostatic valve if are in open full open position need to be clean the coolerbandle.

If the thermo valve is closed need to open and encrease the water flow.

Any way the header bearing need 50 max 55 Celsius.

Any case looking the manual instruction regarding the specification temperature

that need the bearing. In GE H.G.T. the max. temperature must be 55 Ceslius.

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Gear box Vent; if don't have the vent encrease the temperature and leaking

some oil or vapour oil in the bearing and also have noise from the gera box.

(sorry for my english but don't use my traslater now)