Dual Turbo Expander Compressor (TC) Series

Available Options

• Inlet screens
• Inlet trip valves
• Surge control system
• Low hysteresis high cycle inlet guide vanes
• Cable trays or conduit
• Safe area or hazardous area location
• International code compliance (HPGSL, PED, GOST, etc.)
• Cryogenic performance testing
• Spare cartridge with nozzle assembly

Description

“Zero Leakage” Inlet Guide Vanes

• Adjustable inlet guide vanes provide optimum flow patterns as well as precise and continuous control across the machine’s full operational spectrum
• Self-energizing back plate maintains zero sidewall clearance for maximum expander efficiency
• Zero backlash variable guide vane configuration provides smooth turn-up capability to 125% of design flow

Rugged Rotor Design

• Stiff rotor shaft and high capacity tilt pad bearings assure maximum stability at all operating loads and speeds
• High capacity tilt pad thrust bearings provide the extra margin necessary to handle transients
• Numerous bearing designs available to accommodate specific process applications, including hydrodynamic (journal and tilt pad) bearings, ball bearings, ceramic bearings, and air/foil bearings
• Sealing design offers robust construction and reliable performance

Dual Independent Labyrinth Shaft Seal

• Reliable teeth-on-shaft design is precision machined to ultra close clearances, minimizing seal gas consumption
• Dual port, atmospheric center vent prevents process stream contamination

Self-Aligning Wheel Attachment

• Tapered bore and stretch rod design automatically compensates for thermal and mechanical changes to maintain alignment under all operating conditions
• Precision machined tapered bore/shaft attachment allows independent balancing of turbine wheel and shaft to facilitate field repair

Main features

• Common lube oil system and controls support two expanders/compressors
• “Zero leakage” inlet guide vanes
• Components individually balanced for ease of field replacement
• Tapered shaft wheel attachment for field interchangeability
• Labyrinth shaft seal design minimizes seal gas consumption and prevents process stream contamination
• Shaft-driven boost compressor reduces power consumption, increasing plant efficiency

Process diagram