Turbomachinery Package Specification

Taurus 60 Compressor Set and Mechanical Drive

 

 

6 Gearbox

6.1General Description

If required, a gearbox (Figure 8) can be provided selected specifically for compressor set and mechanical drive applications. The gearbox uses few moving parts, providing high reliability and ease of assembly and disassembly. The gearbox is designed for continuous-duty operation and matches the output speed of the turbine or tandem compressor to the required operating speed of the driven compressor. Gear lubrication is provided by the package lube oil system. The gears can be serviced without removing the main case.

Depending on the application, the gearbox may be primary speed increasing or speed decreasing (between the gas turbine and the first or only driven compressor) or it may be inter-body speed increasing (between tandem compressors).

The gear unit is designed in accordance with American National Standards Institute/American Gear Manufacturers' Association (ANSI/AGMA) standards as described in Solar's specification ES 2238. The gear unit design includes a fabricated steel or cast iron housing, double helical precision hobbed and finished ground gear elements, and split steel-backed babbitt lined journal bearings on all shafts.

Figure 8. Typical Gearbox6.1.1Primary Speed-Increasing Gearbox

The primary speed-increasing gearbox will have a specific gear ratio and speed range. The gearbox increases the output speed of the turbine to the required operating speed of the driven compressor, optimizing the power turbine speed for each application. The gearbox output shaft direction of rotation is counterclockwise, when viewed from the aft (exhaust) end of the package looking forward.

© 2009 Solar Turbines Incorporated. All rights reserved.

TPS60CSMD/309

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