Natural Gas Refueling Station and Component Systems

From Custom Compression System and Component

Universal Air & Gas Products Corporation (UAPC) has decades of successful experience in turn-key, natural gas fuel system design and construction. Gas compression, storage, dispensing, regulation and controls are all available from UAPC. Similar expertise is applied to government, military and industry applications. These applications include natural gas (NGV) systems built to virtually any USA or international standard.

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Product Overview

The services that we provide for the production of natural gas refueling stations or component systems are:

Consulting
Station design/engineering services
In house CAD design capabilities
Standard and custom designed compression packages
Supply of state of the art fuel dispensing systems
Supply of ASME & DOT gas storage systems
Supply of card readers
Construction management

Certified field service technicians and engineers support UAPC systems during installation and startup. As needed or long-term maintenance agreements are also available, which provide for routine or comprehensive technical site supervision. Documentation packages are extensive. This facilitates detailed maintenance, appropriate.

Specifications

Compressor Types

Duplex (Multiple Compressors)
Reciprocating
Rotary
Rotary Vane

Lubrication Options

Oil Lubricated
Oil-Free
Oil-Less

Cooling Options

Air Cooled Aftercooler
Air Cooled Compressor Block
Air Cooled Entirely
Air Cooled Intercooler (If Multi-Staged)
Water Cooled Aftercooler
Water Cooled Compressor Block
Water Cooled Entirely
Water Cooled Intercooler (If Multi-Staged)

Installation Site

Hazardous (Explosive gas or dust potentially present)
Inside
Inside-Water Exposed
Outside
Outside-Salt Air Exposed
Outside-Weather Exposed

Drive Type

Electric
Gas

Electrical Standards:

NEMA
IEC (International Electrotechnical Commission)
IP Code (International Protection Rating)
CSA (Canadian Standards Association)

Electric Motor Standards

IEC Standard
NEMA Standard

Electric Motor Options

Direct Coupled
Explosion Proof
Flexible V-Belt Drive
Fungus Protection
Mill & Chemical Duty
Open Drip Proof (ODP)
Space Heater
Totally Enclosed Fan Cooled (TEFC)

Gas Dryer Options

Desiccant dryer
Membrane dryer
Others
Refrigerated dryer

Pressure Vessel Standards

ASME
California Seismic Zone
California-LA Code
Massachusetts code
Others
TUV

Pressure Vessel Materials

Carbon steel, enamel exterior finish only
Carbon steel, epoxy-coated interior/exterior
Carbon steel, epoxy-lined interior
Others
Stainless steel, 304
Stainless steel, 316

Standard NG Compression Systems

Standard NG Compression System Models

Duplex, Enclosed Compressor Systems
Enclosed Compressor Systems
Large Compressor System (Air Cooled)
Large Compressor Systems (Water Cooled)
Small Compressor Systems

Power (Electric Motor) Range

5 to 300 hp

Inlet Pressure

1 inch WC or higher

Maximum Discharge Pressure

6000 psig

Flow (Subject to Inlet/Outlet Conditions) Rate

5 to 1030 scfm
Compression Stages
3 to 5, Subject to Inlet Conditions

Cooling System Design Options

Air
Water

Electrical Classification (USA)

NEC NEMA Design 7, Class 1, Division 2, Group C, D

Electrical Voltage

200 to 575 V

Electrical Phase (Ph)

1 Ph to 10HP
3 Ph all HP

Standard Compression System Features

Structural steel base frame, fork-liftable
Full system steel enclosure with oil-resistant, sound and ambient insulation; ventilation louvers and fans; pitched roof with ridge vents, heat reflective roof panels; lift-off (trigger latch) 16 gauge steel access panels
PLC (programmable logic control)
Digital message board with fault history and real time readings for all sensors
Common fault indicator light for programmed shutdown conditions
Full voltage motor starter and electrical control system mounted and wired
Control voltage circuit with step-down transformer
Motor overloads
Power-on light
Emergency kill (mushroom) switch
On-off switch for start/stop control (two-way switch)
Face gauge panel, including 1st stage thru final discharge pressure and oil pressure
Face gauge for final system pressure prior to the pressure maintaining valve
Discharge pressure sensor with infinite setting control and multiple set points
Low and high inlet pressure sensor
Low oil pressure sensor
High outlet temperature sensor (1st & 4th stages)
Contacts provided for remote monitoring of system controls
Built-in air cooled intercoolers and aftercooler
Moisture separation, all stages
Auto condensate drainage, all stages
Cartridge dryer / filtration manifold, installed
Forced lubrication system with oil pump and filter
Crankcase breather piped to inlet or vent (subject to inlet conditions)
Automatic compressor unloading system with vented to vapor recovery tank
Non-return valve at discharge
Minimum pressure valve at discharge
Finish paint in blue or light gray enamel
ASME, inlet gas surge tank with pressure gauge and gas tight relief valve
Integrated vapor recovery system with ASME storage vessel regulated to system inlet
Detailed general arrangement, electrical and flow diagrams for customer review and approval prior to system construction
Detailed operations, maintenance and parts manuals provided in electronic or hard copy format (Standard English, alternate languages available at option)

Compression System Options

Completely custom designs
Larger horse power ( kW)
Loose starter and/or electrical controls for mounting remotely at the job site
Reduced voltage starter (wye-delta, solid state or VFD)
Wired / wireless (LAN and/or WAN) based controls with monitoring capabilities (HMI and/or SCADA)
Combination style disconnect switch for the motor starter
Inlet pressure regulation
Outlet pressure regulation
Off-shore base frame (skid) design with lifting eye and drag provisions
Vapor recovery tank pressure or temperature sensors
Analog controls rather than PLC
Custom programming of the PLC
Inlet or discharge gas filtration
Finish paint in epoxy and/or customer’s color selection
Hot dip galvanized structural steel base frame
Installation & startup
Aftermarket technical support or site services
Manuals provided in languages other than English
Closed loop air to water heat exchanger
Closed loop salt water to fresh water heat exchanger
Closed loop water chiller
Open frame design (Elimination of the full system enclosure)
Others