Turbomachinery Package Specification

Taurus 60 Compressor Set and Mechanical Drive

 

 

9 Lubrication System

9.1General Description

The lubrication system, (Figure 13) circulates oil under pressure to the gas turbine and driven equipment. Lube oil is supplied from the lube oil tank located in the driver frame. Oil temperature is maintained at optimal levels by a thermostatic control valve, oil tank heater, and optional oil cooler.

The lubrication system incorporates the following components:

•Oil tank

•Lube oil (customer furnished)

•Gas turbine driven main lube oil pump

•AC Motor-driven pre/post lube oil pump

•DC Motor-driven backup lube oil pump

•Duplex lube oil filter system with replaceable elements

•Oil level, pressure, and temperature indications

•Pressure and temperature regulators

•Strainers

•Oil tank vent separator

•Oil tank vent flame trap

Optional features include:

•Offskid oil cooler

•Oil tank heater

•Stainless steel oil tank and tank covers

•Stainless steel filter system

9.1.1Lube Oil

Lube oil is customer furnished. Petroleum base or synthetic oil with a viscosity grade of C32 or C46 may be used. Synthesized hydrocarbon oils are recommended due to lower pour point, higher viscosity index, better heat transfer, and lower oxidation rate. Lube oil must conform to Solar’s Engineering Specification ES 9-224.

9.1.2Gas Turbine-Driven Main Lube Oil Pump

The main lube oil pump is mounted on an integral accessory drive gearbox. This positive-displacement pump provides lube oil pressure for normal operation.

9.1.3AC Motor-Driven Pre/Post Lube Oil Pump

The pre/post lube oil pump provides lube oil pressure during package starting and for post-lube cooling of the gas turbine and driven equipment bearings. The pre/post lube oil pump provides lube oil pressure during a gas turbine roll down in the event the main lube oil pump has failed.

9.1.4DC Motor-Driven Backup Lube Oil Pump

The backup lube oil pump provides lube oil pressure for post lube cooling of the gas turbine and driven equipment bearings in the event the pre/post lube oil pump fails. The backup lube oil pump provides lube oil pressure during a gas turbine roll down in the event the main lube oil pump and pre/post lube oil pump have both failed. The backup lube oil pump also provides lube oil pressure during an emergency condition such as a

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