Helical Rotary Screw Compressor

The spiral screw compressor GA series is equipped with a high-efficiency permanent magnet motor, which has excellent energy-saving performance, smooth operation and low noise, allowing it to be installed close to the point of gas consumption.

The fuel-injected twin-screw air compressor has the advantages of high stability, high efficiency, small vibration, and low noise.

The matching of the yin and yang rotors and the rotor and the casing is set so that there is less backflow leakage of gas and there is no remaining gap volume, so the efficiency is high.

The injected lubricating oil has sealing, cooling and lubricating effects.

Few parts, no suction and exhaust valves.

1.Host: The world's top brand, with excellent performance and reliable operation.

2.Motor: F-class air-cooled motor efficiency exceeds EFFL standards.

3.Transmission system: The motor drive end is lubricated with compressor oil, which is highly efficient, maintenance-free and extremely reliable.

4.Fan: large cooling air volume and low noise.

5.Cooling system: It adopts plate-fin structure and high-quality materials to ensure that the cooler is pressure-resistant, has high heat dissipation efficiency, and has good corrosion resistance.

6.Air filter: Heavy-duty, multi-stage air inlet filter, dust removal accuracy 1um (99% filtered out), large contact surface, long service life.

7.Oil/gas separator: The new generation separator uses new filter materials, which is more efficient and has an air oil content of less than 1ppm.

8.Intelligent controller: All operations and related data of the air compressor are displayed on the control panel, allowing you to control it at your fingertips, making it easy, convenient and accurate.

 

 

The helical screw compressor uses high-capacity compression components, its rotor cylindrical speed is low and it achieves optimal oil injection, achieving high efficiency and high reliability. The latest design ensures extremely low system and compressed air temperatures. Ensure that all components achieve the best cooling effect and highest service life.

Maintenance-free, highly reliable and efficient drive concept

Air Compressor Equipment - Screw air compressors drive compression components through a high-efficiency transmission system at the optimal speed for the purpose. Completely maintenance-free during normal operation.

 

 

Air compressor equipment - screw air compressor's original compressor design saves unnecessary maintenance costs. All components are designed for long life, and large inlet filters, oil filters and fine separators ensure optimal compressed air quality. All oil filters and separator components on all models up to 22kW (30hp) are centrifugal opening and closing, further reducing maintenance time. "Suda Repair Points" enable repair work to be completed within minutes, reducing downtime and repair costs.

 

 

To reduce operating costs, precise operational control is essential. All machines are equipped with intelligent control systems, and their control menus are simple and easy to use.

Air compressor equipment - energy saving and consumption reduction

The compressor adopts a unique reluctance switch variable speed drive system. This drive system allows the compressor output to match different demands, thus significantly saving energy consumption. The output of the entire system can accurately match the demand, and the operating energy consumption of the compressor is just right.

Air compressor equipment-screw air compressor standard series, integrated compressor and dryer series

This new series of oil-injected twin-screw air compressors is designed to provide customers with a small, ready-to-work complete set of products. It has the characteristics of small footprint, easy installation, easy transportation and easy handling. It can be passed through standard size Doorway. Compressed air is single-connected and power is easily connected. There is also an integrated dryer with an energy-saving thermal mass unit. This new compressor and dryer unit combines the L-Series oil-injected twin-screw The compressor is combined with a refrigerated dryer. The Scolo series is available in 5 models ranging from 7.5P to 500P (5.5kW to 7.5kW). The dryer unit is matched with the compressor, and the output air can be dried to a constant pressure dew point of 3oC without the need for a refrigeration control valve to avoid repeated adjustments. To ensure air quality and dryer reliability, the dryer unit switches off once the dew point is reached. It is supplied with a large, easy-to-replace air filter, which is paired with a dehumidifier at the inlet to ensure optimal performance. performance. The LF Aircentre series provides various outputs. The 500P (400KW) can produce an air volume of up to 73 m3/min at 7bar.

 

 

(1)Inhalation process: The motor drives the rotor. When the tooth groove space of the master and slave rotors turns to the opening of the air inlet end wall, the space is large and the outside air fills it. When the air inlet side end face of the rotor turns away from the shell When opening the air inlet, the air between the tooth grooves is enclosed between the main and slave rotors and the casing, completing the suction process.

(2) Compression process: At the end of suction, the closed volume formed by the master and slave rotor tooth peaks and the casing decreases with the change of the rotor angle and moves in a spiral shape. This is the "compression process".

(3) Compressed gas and fuel injection process:

During the transportation process, the volume continues to decrease, the gas continues to be compressed, the pressure increases, and the temperature increases. At the same time, the lubrication that becomes mist due to the air pressure difference is sprayed into the compression chamber, thereby achieving the functions of compression, temperature reduction, sealing and lubrication. .

 

 

When the closed tooth peak of the rotor rotates to meet the exhaust port of the casing, the compressed air begins to be discharged until the matching surface between the tooth peak and the tooth groove moves to the exhaust end face. At this time, the tooth groove space is zero, that is, the exhaust is completed. Qi process. At the same time, the other pair of tooth grooves of the master and slave rotors have rotated to the intake end, forming the largest space to start the suction process, thus starting a new compression cycle.

 

 

GA75PM-8 spiral screw compressor
Model		GA75PM-8
cooling method		air cooling
Exhaust volume/exhaust pressure (m/min)/(Mpa)		12.5/0.8
Ambient temperature (℃)		-5～+45
Noise dB(A)		78±2
Exhaust temperature (℃)		≤ambient temperature +15℃
Lubricant capacity (L)		65
Gas oil content (ppm)		3~5ppm
transfer method		direct drive
safety valve set pressure		≤Rated exhaust pressure×1.2 times MPa
Dimensions	Length(mm)	1800
	Width(mm)	1220
	Height(mm)	1800
Net weight(kg)		1300
Connection size		DN50

 

Introduction to spiral screw compressor accessories

 

1. The high-efficiency aluminum plate-fin heat exchanger is designed with a maximum temperature of 230°C.

2. Strong permeability, good heat transfer performance, improved "temperature and pressure" to reduce energy consumption.

2. The unique fin structure increases the secondary heat exchange area, promotes turbulence, and improves the heat transfer coefficient.

3. The heat exchange area is 30% larger than the standard in the same industry, with a large margin, which improves the heat transfer coefficient and achieves the optimal cooling effect.

4. Achieve the best state of the cooling and lubrication system

5. Easy to clean.

6. Designed to reduce the temperature of super coolant, which can optimize the operating status of vacuum pump components and extend the life of the machine.

7. Efficient cooling capacity to improve operating efficiency

8. Adequate redundant design allows the system to operate normally at the maximum ambient temperature of 43°C

9. Use a temperature control valve to control the temperature of the lubricating oil entering the main engine.

1. Integrated functions of temperature control valve and oil filter seat

2. Ensure the smooth flow of super coolant inside the system

3. The temperature control valve controls the temperature of the exhaust system within a suitable range.

4. Control the oil temperature to not be lower than the ambient temperature +40°C to prevent water vapor in the oil-gas mixture from escaping and causing emulsification of the coolant.

5. The temperature sensing element automatically controls the proportion of coolant entering the cooler and bypassing according to the exhaust temperature to achieve the purpose of temperature control.

6. Keep the temperature of the coolant in the optimal range and extend the service life of the coolant.

7. Easy to install and maintain

8. Simplify pipelines, reduce joints, and reduce pressure loss and oil and gas leakage probability

1. Original imported filter material, foldable filter element

2. The filter paper increases the filtration area by 30%, has long service life and small pressure drop.

3. Large filtration area, small filtration resistance, and good filtration effect

3. Efficient dust removal and effective protection; extend the service life of the main engine, super coolant, negative pressure gas-liquid separator core and other components

1. Eliminate the traditional PLC control scheme and have built-in dual PID control for pressure and temperature, making the control more intelligent.

2. High-performance air compressor-specific touch screen, high-end image, sensitive touch response, adaptive vacuum pump control program, easy to operate.

3. Advanced vector control algorithm optimizes product adaptability while adjusting the best performance output to improve system operation reliability; the frequency converter is compatible with permanent magnet motor control.

4. Reliability and safety protection: For various harsh application situations of vacuum pumps, it provides a high overload service coefficient, configures EMC filters, and sets up a variety of early warning and protection functions to reduce the probability of failure during user use.

1. All models use IE4 level (GB1 energy efficiency) ultra-efficient motors;

2. IP55 protection level.

3. The motor windings and magnets are in a closed and clean space to avoid contamination and demagnetization;

4. All motors adopt SmCo magnet design, with higher demagnetization temperature and more reliable product quality.

5. All motors have winding temperature sensors to monitor the internal temperature of the motor in real time, with high temperature warning and trip protection.

 

There is one situation where the screw compressor will not run. In the unloading state, if the loading pressure does not drop to its loading pressure within the set time, it will stop for a long time. There is a time setting for the long-term shutdown. After this time setting, the screw compressor will not run. , the pressure drops to the loading pressure, and if these two conditions are met, the air compressor will automatically restart.

 

When the screw compressor is working, it will adjust the speed and displacement according to the compression demand to achieve optimal efficiency. In the 25% unloaded state, the displacement and speed of the screw compressor will be reduced accordingly, but this will not affect its long-term operation. At the same time, operating the screw compressor under low load conditions can also reduce energy consumption and machine wear, and increase machine life.

 

For long-term operation of screw compressors, the following points need to be noted in operation and maintenance

 

1. Clean the air filter and cooler regularly to ensure good heat dissipation and air circulation;

2. Change the lubricating oil regularly, and clean and inspect the oil circuit to ensure the lubrication effect of the machine;

3. Check the installation position and surrounding environment of the screw compressor to ensure good ventilation and no foreign matter interference;

4. Carry out regular machine inspections and maintenance to detect and solve problems in a timely manner.

In general, it is feasible for screw compressors to operate for a long time at 25% unloading state. However, attention needs to be paid to the operation and maintenance of the machine to ensure the stability and life of the machine.

 

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