Various national standards for screw air compressors

Technical overview of national standards for screw air compressors

In order to standardize the design, production and application of screw air compressors, various countries have formulated corresponding technical standards. From the perspective of general technical requirements, the main standard contents are classified and described as follows:

I. Safety protection standards

1. mechanical safety requirements

• The equipment needs to be equipped with an emergency shutdown device to ensure that the power source can be quickly cut off under abnormal operating conditions
• Moving parts (such as screw rotors) need to be equipped with protective covers to prevent injuries caused by personal contact

2. Electrical safety specifications

• The control circuit must have overload protection and short circuit protection functions
• High-voltage components (such as motors, cables) must meet insulation level requirements to prevent leakage risks

2. Performance guarantee standards

1. Basic functional requirements

• The equipment must stably output design pressure and flow under rated operating conditions
• The pressure regulating device must have ±5% accuracy control

2. operation reliability

• Continuous operation time must reach 2000 hours without failure
• Critical components (e.g. bearings, seals) need to pass durability testing

3. Energy efficiency management standards

1. Classification of energy efficiency levels

• Set the energy efficiency level based on specific power (ratio of input power to exhaust volume)
• Encourage the adoption of energy-saving technologies such as frequency conversion speed regulation and waste heat recovery

2. test method requirements

• Energy efficiency testing needs to be carried out under standard working conditions (such as ambient temperature of 20 ° C and relative humidity of 65%)
• Test data needs to be verified by a third-party organization

4. Environmentally friendly emission standards

1. noise control

• Equipment noise level must meet regional environmental protection requirements (such as industrial areas ≤85dB, residential areas ≤70dB)
• A muffler is required to reduce exhaust noise

2. Oil and gas separation requirements

• The lubricating oil system needs to be equipped with a high-efficiency oil and gas separator to ensure that the exhaust oil content meets the standard
• Waste oil needs to be recovered through special pipes and direct discharge is prohibited

5. Installation and maintenance specifications

1. Basic installation requirements

• The equipment must be installed on a smooth foundation, and the vibration damping device must meet the vibration frequency control requirements
• Pipe connections need to use metal hoses to prevent stress transfer and leakage

2. Maintenance standards

• A regular maintenance system needs to be established (such as replacing filter elements every 500 hours)
• Maintenance records need to be kept for at least 2 years to facilitate quality traceability

6. Adaptation standards for special working conditions

1. High temperature environment applications

• A high-temperature cooling system needs to be equipped to ensure that the lubricating oil temperature does not exceed 90℃
• High temperature resistant insulating materials shall be used for motors

2. Low temperature environment applications

• Preheating device shall be installed to prevent oil solidification
• The pipes shall be wrapped with thermal insulation materials.

The standards described in this overview are applicable to conventional screw air compressors, and special scenarios (such as explosion-proof, food-grade applications) need to be implemented in conjunction with special technical specifications. Enterprises can conduct product design and quality control based on the target market area and refer to corresponding national standards.