Turbomachinery Package Specification

Taurus 60 Compressor Set and Mechanical Drive

 

 

Table 3. Typical Solar Gas Compressors

 

Compressor

 

 

Number

 

 

Maximum Pressure

 

 

 

Maximum Flow

 

 

Maximum Total Head

 

 

 

 

 

 

Rating

 

 

 

 

 

 

 

 

Family

 

 

of Stages

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

kPa

 

 

psig

 

 

 

m3/min

 

 

ft3/min

 

 

kJ/kg

 

 

ft-lbf/lbm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For Gas Production Applications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C16

 

1-10

 

 

20 700

 

 

3000

 

50

 

1800

 

215

 

72,000

 

 

C33

 

1-12

 

 

15 510

 

 

2250

 

270

 

9500

 

325

 

108,000

 

 

C40

 

1-6

 

 

17 240

 

 

2500

 

255

 

9000

 

255

 

85,000

 

 

C50

 

1-5

 

 

10 350

 

 

1500

 

565

 

20,000

 

285

 

95,000

 

 

For Gas Pipeline Applications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C40

 

1-2

 

 

11 040

 

 

1600

 

 

270

 

9500

 

95

 

32,000

 

4.2.1Impellers

Compressor impellers are designed to conservative stress levels. All impellers are suitable for sour gas applications. Each impeller, after machining, is proof tested to 115% of its maximum mechanical speed.

4.2.2Rotor Assembly

The rotor assembly consists of stub shafts, impellers, and, if required, rotor spacers (to maintain a constant bearing span) and a centerbolt. These components are individually balanced and are rabbet-fit to each other for concentric alignment. Torque is transmitted through dowel pins. The entire assembly is clamped together with the centerbolt. The rotor assembly is easy to disassemble. The benefits from this type of construction are two-fold. Impellers that can be used in a “restaged” rotor are easily salvaged and downtime is minimized. Reusing old impellers, instead of purchasing new ones to match new operating conditions, enhances the economic feasibility of restaging to maintain optimum compressor performance and the lowest possible operating costs.

4.2.3Casings

The pressure-containing outer casing of a compressor is an assembly of three components: the suction and discharge end caps, which contain the bearing and seal assemblies, and the centerbody, which holds the rotor and stator assemblies. This is considered a vertically split “barrel” design. The end caps contain all the service ports for oil and gas supply and discharge.

4.2.4Compressor Module

The compressor module includes the centrifugal compressor(s) mounted on a structural steel matching base that, when bolted to the driver skid, forms a continuous base plate on which all the required subsystems are installed.

4.2.5Lube Oil System

The gas turbine, gearbox (if required), and compressor modules have a common lube oil system.

4.2.6Compressor Dry Seal System

The dry seal system consists of the seal gas and separation gas systems. The seal system maintains a barrier between the process gas and the compressor bearings. The separation gas system maintains a barrier between the compressor bearing lube oil and the dry gas seals.

© 2009 Solar Turbines Incorporated. All rights reserved.

TPS60CSMD/309

15