ONE STAGE OIL LESS ROTARY SCREW AIR COMPRESSORS
GAC7 - GAC90
Application:
Heavy & light industry, mining, hydropower, seaport, engineering construction, oil
and gas fields, railways, transportation, shipbuilding, energy, military industry,
spaceflight, and other industries.
Features and Advantages of GREEN AIR COMPRESSORS Fixed Speed Screw Air
compressor:
Advanced High-Efficiency Air End:
Adopts industry-leading screw air end, high efficiency, and low rotating speed. With the
third generation tooth type of rotor, cutting-edge geometric design-stable, reliable,
energy-saving and long service
Flexible Coupling Direct Drive:
Adopts direct connection structure without any loss, transmission efficiency is 100%,
maintenance cost is low, disassemblies convenient, greatly save the downtime.
Easy maintenance–air end maintenance only needs to disassemble the air end, motor
maintenance only needs to disassemble the motor, do not affect each other.
Intelligent Microcomputer Control System:
Adopts intelligent control system to ensure fully automated intelligent operation,
detect exhaust pressure, temperature, and other field data, and control the exhaust
pressure within the preset pressure range through the intake valve, so as to output
stable pressure.
Safe, Reliable, and Efficient Motor
Adopts unique low-speed motor, protection grade IP55, insulation grade F, suitable
for bad working conditions. High balance precision, high speed running smoothly
Unique Heat Removal &Cooling System:
Adopts advanced design, harmonica radiator, effectively increase the heat dissipation
area, run faster and smoother, and take away the heat of the machine in time.
The heat exchange effect of the same area is 30% higher than that of the traditional
cooler. Even in the Asia-Pacific region with high temperatures and high humidity,
the normal operation of the unit can be guaranteed.
COOLER:
- The heat exchanger uses high-quality raw materials and a unique internal
channel design, which increases the heat exchange area and can
effectively dissipate heat for the air compressor.
- The inner wall of the heat exchanger is treated with corrosion
protection to increase the service life of the heat exchanger and
increase the heat transfer effect.
- The radiator has passed the strict factory test, and the quality is
reliable, which effectively prevents the high temperature of the air
compressor and increases the service life of the machine
AIR END:
- Adopts the international top-level third-generation asymmetric wire
twin-screw air end, adheres to the exquisite manufacturing process, adopts
the peak high efficiency low-pressure, high-efficiency tooth shape and the
axial air inlet design.
- Optimized flow channel design, with a large rotor, low speed, and high
efficiency. Increased energy efficiency by 5% -15% compared to the second
generation.
- Uses Swedish SKF heavy-duty bearings, double-lip lip shaft seal, durable and
reliable. The bearing design life is 80,000-100,000 hours and the air end
design life is about 200,000 hours.
CONTROLLER:
- Adopts PLC multi language control system, beautiful and intuitive interface,
easy to operate function, operators can quickly and easily adjust the
compressor.
- 14 protection functions such as overload protection, short circuit
protection, reverse protection, low-temperature protection, high voltage
protection, etc. to fully protect the unit.
- The advanced microcomputer control drive system realizes intelligent
control, air volume variable speed control, automatic adjustment of load
start and soft start. Intelligent dynamic control, dynamic display of the
working status of each component of the compressor, visual pressure,
temperature, current working curve, etc
- Large memory and equipped with printer interface; It can use computer remote
monitoring or multiple linkage control between air compressors.
FAN:
- The fan uses a large fan design to effectively enhance the fan’s heat
dissipation effect. The motor adopts a special internal design to adapt to
harsh working conditions.
- The fan motor adopts special winding and high protection grade design to
adapt to harsh working conditions.
- The fan is controlled by the controller to realize the automatic start and
stop function, which effectively maintains the normal working temperature of
the air compressor lubricant.
MOTOR:
- The motor uses high-performance motors of well-known brands. Permanent
magnet synchronous motors (PM motors) use high-performance NdFeB permanent
magnets which will not lose magnetism under 200 ° and their service life
reaches as long as 15 years.
- The stator coil uses the frequency converter special halo-proof enameled
wire, the insulation is outstanding and the service life is longer.
- The motor has the function of temperature protection. It also has a wide
range of motor speed regulation, high precision, and a wide range of volume
regulation. The reliability is significantly improved with small size, low
noise, and large excess current.
- Protection grade IP55, insulation grade F, effectively protects the motor
and increases the service life of the motor, the efficiency is 5%-7% higher
than similar products.
INTAKE VALVE
- The intake valve is the core component to control the air intake of the air
compressor.
- Adopting the world-famous brand air intake valve, it can automatically
adjust its volume by 0-100% according to the requirement of the system air
quantity. It promises small pressure loss, stable action, and long life
consequently reducing operating costs.
OIL FILTER
- Adopts high-density filter material, the surface is treated with
nano-electroplating.
- The filter element has uniform pore size, small filter resistance, large
flux, strong interception ability, and long service life.
- High filtration accuracy effectively filters impurities in lubricating oil,
prolongs the service life of the equipment.
AIR FILTER
Adopting a design with high dust holding capacity and low flow resistance, which
can filter out tiny fixed particles in the air. The dust removal effect can
reach 99.5%, ensuring the normal operation of the components of the system and
extending the service life.
AIR-OIL SEPARATOR CORE
The high-quality air-oil separation element and gas-liquid filter element are
equipped with advanced three-stage air-oil separation to keep the oil content
below 3ppm to ensure the output of high-quality compressed air.
Fixed Speed Vs. Variable Speed Air Compressors
There are two kinds of industrial compressor machines. There are fixed-speed
machines, and there are variable-speed machines. Both kinds of compressors have
differences in how they operate.
Fixed Speed Screw Air Compressors
As its name clearly indicates, a fixed-speed air compressor operates by supplying
a consistent — or fixed — voltage and frequency to its motor, which in turn
drives its rotary screws at a consistent speed to draw in and pressurize the
air. If your plant operates on a 24/7 basis without significant fluctuations in
production cycles, then your energy consumption may be fairly consistent, and a
fixed-speed air compressor might be a good choice.
If, however, your facility goes through daily, weekly, or even seasonal changes
to its production outputs and subsequently has varying levels of air demands,
then a fixed-speed air compressor will wind up using more energy and be somewhat
wasteful over the course of its life cycle.
Variable-Speed Air Compressors
Unlike fixed-speed compressors, variable-speed air compressors have the added
ability to vary the frequency they supply to their motors, which are then able
to change the speed at which their rotary screws spin. This means depending on
the air pressure needs of a given facility at any one time, a variable-speed air
compressor can either slow down or speed up to meet those specific needs without
wasting energy.
However, it must be mentioned that since variable-speed compressors have the
ability to change their operational speeds, they are highly susceptible to any
inconsistencies coming from their power source. That said, let’s put what we
know together and see what the big picture tells us.
It should be clear that if you’re weighing the differences between fixed-speed
and variable-speed air compressors, you need to look beyond the initial cost
involved. Naturally, if your plant is prone to seasonal peaks in its production
cycles or daily fluctuations in its air needs due to shifting differences,
you’re going to want to look at how long it will take a variable-speed
compressor to start saving you in lower energy costs when compared to a
fixed-speed model. However, if your facility’s power source suffers from
uncontrolled surges and drop-offs, then you may wind up paying a price for using
a variable-speed compressor.
It’s also worth noting that for those who qualify for energy savings programs and
tax incentives, there may be further financial benefits attached to installing a
variable-speed compressor.