Rotary Screw Package - Electric Driven

Rotary Gas Screw Electric-Powered Compressor (10HP-400HP)

Standard Features

  • Field Proven LeROI or Gardner Denver Oil-Flooded rotary gas screw compressors
  • Class 1 Division 2 B,C & D package designs
  • Twin Stars control programming seamlessly integrated with the VFD control panel using ComAp or IDEC plc’s
  • Electric Motor driven, TEFC, marked for HAZ. LOC. area
  • ASME Stamped vessels fitted with relief valves sized in accordance with API RP520 II
  • Electric motor driven Oil and Gas cooler combination, marked for HAZ. LOC. area
  • Skid with 110% environmental containment
  • Engine drive units are also available.

Instrumentation And Control

  • Operator Approved HMI screen for easy everyday operation
  • Seamless integration of Twin Stars control logic and standard VFD panel
  • Remote operation, communication, and monitoring via Modbus RTU – RS232/RS485, or TCP Ethernet
  • Pressure Transmitters for Suction, Discharge, Oil and Coalescent Filter Differential Pressure monitoring
  • RTDT for Discharge Temperature monitoring
  • Low Compressor Oil Level and High Scrubber Level float switches

NOTE: Actual instrument panel delivered depends on the configuration.

Components

Below is a possible configuration – your requirements may vary.

SKID

The standard skid is a rigid, welded steel fabrication design filled with concrete to create a solid, vibration free foundation. This design includes environmental containment for 110% of oil volume present and drain ports all four corners.

SUCTION SCRUBBER

The suction scrubber is an ASME rated vessel for 150 PSIG at -20 to 200F. The scrubber includes a Taylor 81 series relief valve, A.C.S. co-knit demister pad, FW Murphy high liquid level switch, 2” bullseye sight glass, FW Murphy control level switch, Condensate Pump with Class 1 Div. 2 Marked motor, internal baffling for liquid slugs, and ports for differential pressure. Optional high pressure dump system available allowing liquids to be transferred back into the sales line or high pressure water lines.

DRIVE

  • Premium efficiency Class 1 Div. 2, 460V, 60 hertz, SF=1.15, Foot-mounted, VFD rated 10:1 CT motors.
  • Cummins, Caterpillar, or GM industrial engines are typically utilized on engine driven units.

COMPRESSOR

  • Packages utilize either a LeROI or Gardner Denver screw compressor with 350 PSIG MAWP.
  • Capacity control is performed by a combination of variable speed control by our VFD and set point control of an auto-bypass.

LUBE SYSTEM

The lube oil system comes standard with a mechanical thermostat, oil filter assembly, inter-connecting tubing, and a minimum pressure valve mounted on the gas/oil separator to provide oil pressure for proper oil circulation.

GAS / OIL SEPARATOR

The gas/oil separator is ASME rated for 350 PSIG, -20 to 300F and contains a top hat style element rated for 2 ppm (1.7 ounce per 1.0 MMSCFD gas flow) or less oil carryover when new.

OIL / GAS COOLER

The standard unit uses a free standing oil cooler and gas cooler with 3 phase TEFC Class 1 Div. 2 marked motor.