quincy rotary screw air compressor qgd 315-400kw

Quincy Rotary Screw Air Compressor

QGD 315-400kW

QUINCY ROTARY SCREW AIR COMPRESSOR QGD 315-400kW

QUINCY COMPRESSOR – USA

Q-TECH AIR SYSTEM TECHNOLOGY LTD

Quincy Global Direct - QGD


Quincy Globalized Design Attractive Styling Ergonomically designed Efficient & Reliable Quiet Operation

Model QGD 315 QGD 355 QGD 400

Full Load Drive Motor kW 315 355 400

Capacity m³/min

7bar 61.4 68.4 73.38bar 61.1 68.1 73.0

10bar 48.0 60.2 67.3Rotor Diameter

mm 321 321 321

QGD 315-400kW


Inside the QGD 315-400

Drive Motor

Inlet Air System

Quincy Airend


Inside the QGD 315-400

Lubricating System

/Reservoir

Fluid/Air Separation

System

Coolers

Piping System

Electrical Control

System


Inlet Air System


Design of Inlet Air Silencer Compartment

Inlet Air for the compressor & air required for cooling the motor is drawn directly from outside the enclosure. This raises efficiency and improves cooling conditions. The entire enclosure and silencer compartment is padded with sound absorbing foam to lower sound levels.

Inlet Air System


POWERCORE Inlet Filter Element (Patented Technology)

Patented Technology. Performance is 10 times better than traditional paper elements. Pressure drop is low – raises efficiency of the compressor. Particle removal down to 3 micron at 99.9% efficiency for complete protection. Long service life, easy change-out of filter element.


Inlet Air System

Quincy Positive Closure Inlet Valve

Capable of modulation with capacity range of 20 – 100 %, which is higher than machines of similar competing lines. The wide modulation band ensures stable pressure in air supply, reduces energy consumption due to varying load changes and extends the life of the motor.

The positive closure inlet valve is able to close totally. During unload, air enters the airend from the bypass valve. If there is a sudden loss of supply power or in the event of emergency stop, the inlet valve completely closes and prevents a fluid backflow. The inlet valve operates using pressure from the reservoir and makes operation stable and reliable.

The QUINCY Airend


Axial Flow Inlet The directional flow inlet housing chambers the air flow towards the rotor housing in an axial direction, reducing turbulence that would cause an increase in temperature of inlet air.Drawing air into a chamber ahead of the rotors allows the full length of the rotor to be used. The result is improved efficiency by 5% to 7% over traditional radial flow designs.

The QUINCY Airend


Airend Shaft Seal Triple lip PTFE shaft seal assembly Outer dust seal protects the triple lip seal and forms a scavenge cavity. Scavenge cavity is linked to the inlet valve via a return line and the vacuum ensures no fluid leakage. The scavenge line is equipped with a check valve that prevents any fluid from following from the airend to the scavenge cavity when compressor is shut down.

6kV, 10kV/3P/50Hz IP23 （ ODP ） motor as standard ， from renowned Chinese manufacturer。380V, 6kV, 10kV IP54 (TEFC) motors are available as options.“C” flange connected motor and airend for permanent shaft alignment. Direct drive, no belts/ gears/ coupling, hence no transmission losses. Flexible dropout coupling. Stable reliable operation.

Drive Train


6KV/10KV – Direct on line starting as standard. Remote reduced voltage starters are available as options. 380V - Wye-Delta reduced voltage starters as standard. Electronic components are SIEMENS branded and quality is assured. PLC based controller uses standard SIEMENS industrial PLC. Reliable and expandable for integration with plant network communication.

Electronics & ControlsMain Electronic & Control Components


Electronics & Controls


HMI & Control Capabilities

Uses SIEMENS TD200 HMI ， dual language display ， user-friendly interface Logic control of dryer Wye-Delta starter is standard. Capacity control options ：modulation auto/dual ， continuous run ， network （ 6 machines） Network control mode ID assigned System date and time display.Total running and loaded hours operation display Continuous monitoring of temperature and pressure Service timings programmed and display Fault alarm display.

Preset time for motor shutdown in auto/dual mode.Auto-restart with programmable time delay Fault alarm log with time and fault type Operating and alarm parameters with password protection Industrial standard PLC, expandable and supports Profibus and other communications network.


Control System Upgrade Option Uses “higher version” SIEMENS standard industrial PLC ， able to network 16 compressors. Uses SIEMENS HMI520 colour touchscreen. User friendly interface with 4 language options: English, Chinese, French and Spanish In addition to the standard PLC capabilities, it can display pressure & temperature historical graphs.Multiple network sequence design and options.

Quincy patented technology lift valves to best fulfill full and part load operation. Continuous monitoring of changes in system pressure & rate of change, and using high speed PID control operation to automatically control on the no. of lift valves opening/closing. Control of system pressure to within ±0.069bar of target pressure. Contoured to sit directly against rotor raises efficiency and prevents blow-by.

Electronics & Control

Lift Valves Variable Capacity Control Option



Fluid/Air Separation System All new separation technology, modular multiple-separator design, that provides larger surface area for fluid/air separation.

Using centrifugal separation & gravity prior to separator, the combined effect lowers oil carryover to 3 ppm or lower.

All connecting pipework is designed to the sides of the reservoir. Separator element change can be accomplished without disconnecting any pipes. Design is ergonomic.


Lubricating System

Quincy high efficiency glass microfibre fluid filter is designed for full flow for total protection.

Imported high quality thermal control valve ensures operating conditions are stable and constant.


Uses Quincy QuinSyn lineof synthetic fluids- standard factory fillbeing QuinSyn- PLUS -

fully synthetic fluid Varnish free operation High viscosity index Excellent corrosion

protection Water holding

capability Efficient cooling

QuinSyn Fluids

(Twin fluid coolers + air cooler) design for redundancy and extra cooling ensure reliable operation in ambient temperatures as high as 46℃.

Aftercooler approach temperature as low as 5 ～ 8℃

Fitted with standard moisture separator for 99.9% removal of bulk water.

Cooling System

Water Cooled as Standard


Imported premium quality moisture separator.

Centrifugal moisture separator removes 99.9% of bulk water.

Fitted with manual and automatic drain valves.

Cooling System

Moisture Separator


Designed for remote location. Flexible & convenient installation. Discharge vents at top of cooler package. Facilitates hot air discharge ducting or energy recovery installations. Quiet operation ， 80 ～ 82dB(A) 。Discharge via top of cooler package also helps lower sound levels. VFD fan (axial flow) helps lower sound levels. Fan speed is automatically regulated to maintain system temperature – efficient and energy saving.

Remote Cooler PackageAir Cooled Option


Piping System


Air piping joints are flange connected. Flexible hose is suitably used where required. Leak-free and fuss-free installation/dismantling.

Oil piping uses steel pipes, layout is neat. Stable and reliable.

SAE “O”-ring fittings provide the most reliable sealing at joints


Superior Low Sound, Reduced Vibration Design

Totally Enclosed Cabinet and Baseplate

Dedicated silencer compartments for air inlet & motor cooling.

Sections of air piping are fitted using flexible hose where necessary.

Direct drive airend and motor are flange connected and supported by vibration isolators.

Thank You！


QUINCY COMPRESSOR – USA

Q-TECH AIR SYSTEM TECHNOLOGY LTD

quincy rotary screw air compressor qgd 315-400kw

Documents

compressor air

air flow

air supply

temperature of inlet

drawing air

axial flow inlet

check valve

bypass valve