Explore the key technical specifications and standards in the design, operation, and maintenance of screw air compressors, ensuring high performance, energy efficiency, and maximum safety.
1. Purpose and Requirements for Using Air Compressors:
2. Technical Requirements for the Equipment and Main Specifications of the Air Compressor:
2.1 Technical Requirements:
2.1.1 Selection of Screw Compressors:
The air compressor should have low vibration, low noise, and high efficiency.
2.1.2 Essential Equipment:
The air compressor’s air-oil receiver tank must be equipped with devices such as: oil level indicators, oil discharge valves, safety valves, air discharge valves, pressure maintenance valves, thermostatic valves, and pressure gauges. The selection of safety valves must comply with the current regulations in the “National Regulations on Pressure Vessel Safety Monitoring.”
2.1.3 Safety Measures:
To ensure the safe and reliable operation of the air compressor, measures must be in place to control the exhaust temperature, the machine’s vibration, and to prevent reverse rotation of the compressor rotor.
2.1.4 Water Separator:
After the regulating valve, a self-draining system must be installed to automatically discharge accumulated condensate in the water separator.
2.1.5 Oil Content in Exhaust Air:
The oil content in the exhaust air of the air compressor must be less than 3ppm.
2.1.6 Noise Reduction Measures:
The air compressor should be equipped with modern and effective noise reduction measures.
2.1.7 Lubrication Oil:
The supplier (Party B) must propose a recommended type of lubricant oil and specify the guidelines for its use, as well as the requirements for the operational procedures and maintenance of the equipment.
2.1.8 Use of Genuine Parts:
Party A must use spare parts and components supplied by the manufacturer/supplier (Party B).
2.1.9 Safety Measures:
The air compressor must be equipped with a reliable grounding system to prevent hazards from electrical leakage. Additionally, there must be no leakage of water, air, or oil in the system.
3. Design and Manufacturing Standards:
3.1 Pressure Vessel Safety Monitoring Regulations of China
3.2 Standard GB150-1998 “Steel Pressure Vessels”
3.3 Noise Control Standard for Industrial Equipment and Urban Acoustic Environmental Standards of China
3.4 Air Compressor Performance Testing Standard: ASME-PTC-9-1970 (American Society of Mechanical Engineers)
3.5 Vibration Testing Standard: VDI-2056 (German Engineering Association)
3.6 Operational Noise Testing Standard: ISO-2151 (International Standard)
3.7 Air Compressor Station Design Standard: GBJ29-90
4. Functions of the Air Compressor:
4.1 Screw Compressor:
A mechanical-electrical unit consisting of components such as an air intake filter, intake valve, main screw compressor, motor, air-oil separator, cooler, and water separator, along with control and electronic components.
4.2 Microprocessor Control:
The entire system is controlled by a microprocessor, with self-diagnosis and protection functions. The system can clearly display operational status: power supply, operation, temperature, pressure, excessive downtime, and error warnings such as: electrical failure, high exhaust temperature, filter failure, oil filter issues, which allows the compressor to operate continuously automatically without supervision.
4.3 Air Flow Control Method:
Airflow is controlled by adjusting the volume.
4.4 Temperature Control Method:
Temperature is controlled by a thermostatic valve.
4.5 Oil-Air Separation Method:
Oil and air are separated using three methods: 1) Centrifugal separation, 2) Separation by impact and gravity, and 3) Separation by adsorption and retention.
5. List of Equipment:
- Screw Air Compressor
- Refrigerated Air Dryer
- Air Storage Tank
Conclusion: :
The air compressor is designed with high technical standards, ensuring stable operational efficiency, energy savings, and safety throughout its use. Maintenance, component use, and system inspection requirements are clearly defined to maintain the long-term operational effectiveness of the air compressor.
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