HG17, HGF17, HGS17 and HGFS17 Series Gas Screw Compressors

HG17XXXVFE Natural Gas Compressor

Models HG17XXX and HGS17XXX Geared HG17000, HGF17000, HGFS17000 Non-Geared

LeROI provides rotary screw compressors for gas to the oil and natural gas, and industrial and process industries. Rotary screw gas compressors are very cost-effective for handling high volumes of gas in field gathering, vapor recovery, and a wide range of other applications. 

Benefits

The HG17, HGF17, HGS17 and HGFS17 series natural gas compressors are suitable for applications to 180 BHP (134.3 KW) and 350 PSIG (24.1 BARG) discharge pressure.

Low maintenance and high reliability are inherent with rotary screws when compressing natural gas because they have few moving parts. There are no valves, rings nor packing to wear out or cause loss of efficiency. Smooth operation results from no unbalanced forces and no pressure pulsation. No foundation is required. There are no piping vibrations from pressure pulsation.

Natural gas engine or electric motor drives are equally acceptable with rotary screws.

LeROI gas screw compressors are available in 12 models covering a flow range of 20 (0.4 M3/min) to 15,000 MSCFD (300 M3/min) and horsepower from 10 (7.46 KW) to 800 (596.8 KW).

Features

The HG17, HGF17, HGS17 and HGFS17 Series can be direct coupled to engines and electric motors (HG17000 electric motor drive only) for maximum flexibility at minimum cost. The HGF17000 and HGFS17000 compressor shaft bearings can absorb V-belt side load without additional pillow block bearing supports.

Single-Stage operation from 20 PSIG (1.38 BARG) to 350 PSIG (24.1 BARG) maximum is possible with the HG17 series oil flooded compressors. Compressor packages are therefore simple, reliable and inexpensive.

Gas differential pressure provides oil circulation for proper lubrication at differential pressures over 60 PSI (4.13 BAR). Optional oil pumps are available for applications with less than 60 PSI (4.13 BAR) differential pressure.

All 175 mm compressors are equipped with LeROI’s adjustable Vi, allowing field adjustment of internal compression during operation. Also, fixed discharge porting can be ordered to match the internal compression needs of your application.

All iron or steel construction with no copper or copper alloys makes these compressors compatible with natural gas, sweet or sour.

Performance

  • Brake HP - 180 Max. (134.3 KW)
  • Flow Range (MSCFD) - 2,500 Max. (50 M3/min)
    Inlet Pressure
    • 20" HG Vac. Min.* (508 mm/Hg)
    • 50 PSIG Max. (3.45 BARG)
  • Discharge Pressure
    • 20* (1.38 BARG)-350 PSIG (24.1 BARG) MAWP
  • Speed Range
    • HG17XXX
      • 540 RPM Min.
      • 4,000 RPM Max.
    • HGS17XXX
      • 540 RPM Min.
      • 3,560 RPM Max.
    • HGF17000/HGFS17000
      • 1,100 RPM Min.
      • 3,710 RPM Max.
    • HG17000
      • 1,640 RPM Min.
      • 5,560 RPM Max.

*Consult Factory for use with low vacuum inlet or discharge pressures.

Technical Specifications

  • Model HG17XXX and HGS17XXX Geared and HG17000, HGF17000 and HGFS17000 Non-Geared
  • Rotor Dia. 175 mm (6.89 inches)
  • Rotor L/D:
    • HGS17XXX and HGFS17000 - 1.2
    • HG17XXX, HG17000, HGF17000 - 1.65
  • Rotor Description: Twin Screw SRM Profile with Sealing Strips, 4 Lobe Male, 6 Lobe Female
  • Shaft Seal(s) – Mechanical*
  • Drive System:
  • HG17XXX and HGS17XXX geared compressors are suitable
    for direct coupling to engines or electric motors and use
    internal helical speed increasing gears (AGMA 11).
    • Gear ratios of 1.368 - 3.237 are available.
    • Rotation - Facing Shaft - CW
    • Drive Shaft 2-1/8” Dia. with 1/2” Square Key
  • HGF17000 and HGFS17000 Non-Geared Compressors are
    suitable for direct connecting to engines or electric motors
    and belt drive - oversized input shaft bearings for belt side
    load up to 75 HP.
    • Rotation - Facing Shaft - CW
    • Drive Shaft 1-7/8” Dia. with 1/2” Square Key
  • HG17000 Non-Geared compressor is suitable for electric
    motor or belt drives - oversized input shaft bearing for belt
    side load up to 75 HP. Rotation - Facing Shaft - CCW
    • Drive Shaft 1-7/8” Dia. with 1/2” Square Key
  • Materials:
    • Rotors – Ductile Iron 65-45-12
    • Castings – Cast Iron G3000
    • Bearings – Roller bearings on the inlet end and tapered roller
    • bearings on the discharge end - alloy Steel Races, Rolling
    • Elements and Cages
  • Weight:
    • HG17XXX - 1,250 Pounds (566 KG)
    • HGS17XXX - 1,100 Pounds (498 KG)
    • HG17000/HGF17000 - 950 Pounds (430 KG)
    • HGFS17000 - 800 Pounds (362 KG)

Options

  • Versatrol Internal Bypass Valves: Versatrol internal bypass valves are available for efficient capacity control from 100-50% of design flow. Control can be manual with four steps or stepless with a microprocessor. Control system is not included.
  • Internal Volume Ratio: The 175 mm compressors have LeROI’s externally adjustable Vi feature, allowing internal compression optimization while the compressor is operating. Fixed volume ratios are also available to allow matching of the internal compression ratio to the actual conditions.
    • High Ratio – 4.0
    • Medium Ratio – 3.0
    • Low Ratio – 2.0
  • Oil Pump: Integral oil pump is available for low-pressure differential applications, with or without fan shaft extension.
  • SAE # 2 Bell Housing
  • SAE # 2 to # 1 Bell Housing Adapter
  • Modules with oil cooler, aftercooler, gas/oil reservoir assembly, thermal valve, fan, oil filter assembly, minimum pressure valve and sight glass are all mounted on a steel subbase with connected components.

Applications

  • Gas Gathering
  • Well Head Gas Compression
  • Fuel Gas Boosting
  • Vapor Recovery
  • Inert Gas Boosting
  • Landfill Gas

Gallery