CHARACTERISTICS OF THE SMALL C-6 FILLING STATION
1.1.- INTRODUCTION
The very small filling station offered by AFSC is built around the C-6 compressor design
and made by CIRRUS, which is designed to be the heart of the system. User friendly in
daily operations, this unit fulfils the needs for professional car refilling at private or public
locations. It is very easy to install the station close to the parking lot.
Connecting the compressor to the electrical network and gas pipe work is similar to gas
appliances installed at home (such as boilers etc.). The crucial innovation lies in the
operating mode of the station: no maintenance at all during 6000 hours of uninterrupted
service. Then the unit is exchanged by a low cost factory reconditioned one.
1.2.- FUNCTIONAL DESCRIPTION: GAS AND LUBRICANT FLOW DIAGRAM
The Following diagram shows the gas circuit in the unit with
all components used for a safe operation:
- Gas temperature: the gas temperature is maintained
close to ambient level by heat exchanger's located after
each compression stage.
- Gas quality: gas conditioning is achieved by separators
and filters located after each step of pressurization. A drain
mechanism automatically monitored is devoted to vent
condensates. Mechanical blocks are reciprocating design.
Pistons operating on one side are single effect. Heat
exchange is fully achieved by ventilated air.
- Safeguard of parts in friction: the lubrication circuit delivers oil in any point under hard constraint (pistons,
cylinders, crankshaft and rods) with a regulated under pressure flow.
- Control and safety: safety valves and pressure switches are located in accurate positions to check any abnormal
running and to stop the unit if any problems occur.
1.3.- MECHANICAL BLOCK
Crankcase: Made of aluminum casting under vacuum
impregnated for tightness improvement. Crankcase
connected on intake pipe. Oil filling system allowing lubricant
supply without pollution. Lubricant level sight glass.
Cylinder head: Bears or holds the intake and discharge
valves. It is fitted with a sufficient number of fins so as to cool
the radiator.
Cylinders: First stage: straight.
Second and third stages: stepped for piston guide and compression piston.
The cylinders are distributed according to a half star configuration around the crankcase so as to ensure the proper
ventilation of all the parts. The cast part is fitted with a sufficient number of fins, for an efficient heat exchange.
Automatic valves: 1st and 2nd stage: flapper valves.
3rd stage: disk type with return spring.
1.4.- MECHANICAL CONSTRUCTION
Crankcase: With two bearings and a crank pin. With
balancing weight.
Connecting rods: Three bush-mounted straight connecting
rods set on the crank pin.
Pistons: 1st stage: straight.
2nd and 3rd stages: stepped.
Shaft end tightness:
Driving side: lip seal in a high grade polymer sliding on
ceramic layer.
Opposite side: cover with O ring.
Coolers: Two interstages coolers and one final cooler are installed in one box located in the cooling air flow
above the electrical motor.
Separator: Separation and filtration on a coalescing cartridge to obtain pollution free gas. A drain
mechanism is automatically opened when the machine stops to vent the recovered condensates. The
recovered oil is sent back to the crankcase.
Fan: Fitted on the second motor shaft end. Protected by a canopy.
1.5.- ANTI POLLUTION DEVICE LINKED TO THE PROCESS
A complete tightness in the compression cycle helps in preserving the environment. Three tanks are installed in the
base frame to fulfill the required functions:
Buffer tank on intake: The capacity is supplied with the gas delivered by the pipe work and ensures a regular
supply to the first compression stage. A solenoid valve set immediately Upstream stops the gas delivery while the
system is shutdown. A pressure switch controls the presence of the gas at a suitable pressure for the process
(minimum pressure release). The gas is always sent back to the compressor and delivered to the user. The tanks
are linked together through a pressure regulator. The gas is flowing from one to another.
Recovery tank: Designed with the largest possible capacity : including two tanks. This capacity receives the gas
from the compression circuit when the high pressure circuit interstages and finally is depressurized.
1.6.- UNIT DESCRIPTION
The unit has a plain shape in a very compact
execution. It is designed for outdoor installation
in a harsh environment. Handling is easy with a
hydraulic trolley.
Canopy is completely made with steel panels
including:
- A bottom plate which accommodates the
anchoring points to the motor compressor unit.
- Two side panels with sound absorbers,
- A removable hood coated with a thick noise
absorber. The electrical cabinet is located away.
1.7.- Operation Data
Ambient Running Temperature: -4° F / 104° F
Nominal Flow:
- System .3 psi: 3 GGE
- System 4.4 psi: 6 GGE
Noise level: 70 dbA at 1 m / 65 dbA at 5 m
1.1.- INTRODUCTION
The very small filling station offered by AFSC is built around the C-6 compressor design
and made by CIRRUS, which is designed to be the heart of the system. User friendly in
daily operations, this unit fulfils the needs for professional car refilling at private or public
locations. It is very easy to install the station close to the parking lot.
Connecting the compressor to the electrical network and gas pipe work is similar to gas
appliances installed at home (such as boilers etc.). The crucial innovation lies in the
operating mode of the station: no maintenance at all during 6000 hours of uninterrupted
service. Then the unit is exchanged by a low cost factory reconditioned one.
1.2.- FUNCTIONAL DESCRIPTION: GAS AND LUBRICANT FLOW DIAGRAM
The Following diagram shows the gas circuit in the unit with
all components used for a safe operation:
- Gas temperature: the gas temperature is maintained
close to ambient level by heat exchanger's located after
each compression stage.
- Gas quality: gas conditioning is achieved by separators
and filters located after each step of pressurization. A drain
mechanism automatically monitored is devoted to vent
condensates. Mechanical blocks are reciprocating design.
Pistons operating on one side are single effect. Heat
exchange is fully achieved by ventilated air.
- Safeguard of parts in friction: the lubrication circuit delivers oil in any point under hard constraint (pistons,
cylinders, crankshaft and rods) with a regulated under pressure flow.
- Control and safety: safety valves and pressure switches are located in accurate positions to check any abnormal
running and to stop the unit if any problems occur.
1.3.- MECHANICAL BLOCK
Crankcase: Made of aluminum casting under vacuum
impregnated for tightness improvement. Crankcase
connected on intake pipe. Oil filling system allowing lubricant
supply without pollution. Lubricant level sight glass.
Cylinder head: Bears or holds the intake and discharge
valves. It is fitted with a sufficient number of fins so as to cool
the radiator.
Cylinders: First stage: straight.
Second and third stages: stepped for piston guide and compression piston.
The cylinders are distributed according to a half star configuration around the crankcase so as to ensure the proper
ventilation of all the parts. The cast part is fitted with a sufficient number of fins, for an efficient heat exchange.
Automatic valves: 1st and 2nd stage: flapper valves.
3rd stage: disk type with return spring.
1.4.- MECHANICAL CONSTRUCTION
Crankcase: With two bearings and a crank pin. With
balancing weight.
Connecting rods: Three bush-mounted straight connecting
rods set on the crank pin.
Pistons: 1st stage: straight.
2nd and 3rd stages: stepped.
Shaft end tightness:
Driving side: lip seal in a high grade polymer sliding on
ceramic layer.
Opposite side: cover with O ring.
Coolers: Two interstages coolers and one final cooler are installed in one box located in the cooling air flow
above the electrical motor.
Separator: Separation and filtration on a coalescing cartridge to obtain pollution free gas. A drain
mechanism is automatically opened when the machine stops to vent the recovered condensates. The
recovered oil is sent back to the crankcase.
Fan: Fitted on the second motor shaft end. Protected by a canopy.
1.5.- ANTI POLLUTION DEVICE LINKED TO THE PROCESS
A complete tightness in the compression cycle helps in preserving the environment. Three tanks are installed in the
base frame to fulfill the required functions:
Buffer tank on intake: The capacity is supplied with the gas delivered by the pipe work and ensures a regular
supply to the first compression stage. A solenoid valve set immediately Upstream stops the gas delivery while the
system is shutdown. A pressure switch controls the presence of the gas at a suitable pressure for the process
(minimum pressure release). The gas is always sent back to the compressor and delivered to the user. The tanks
are linked together through a pressure regulator. The gas is flowing from one to another.
Recovery tank: Designed with the largest possible capacity : including two tanks. This capacity receives the gas
from the compression circuit when the high pressure circuit interstages and finally is depressurized.
1.6.- UNIT DESCRIPTION
The unit has a plain shape in a very compact
execution. It is designed for outdoor installation
in a harsh environment. Handling is easy with a
hydraulic trolley.
Canopy is completely made with steel panels
including:
- A bottom plate which accommodates the
anchoring points to the motor compressor unit.
- Two side panels with sound absorbers,
- A removable hood coated with a thick noise
absorber. The electrical cabinet is located away.
1.7.- Operation Data
Ambient Running Temperature: -4° F / 104° F
Nominal Flow:
- System .3 psi: 3 GGE
- System 4.4 psi: 6 GGE
Noise level: 70 dbA at 1 m / 65 dbA at 5 m
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