Screw air compressor various national standards

Technical overview of national standards for screw air compressors

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

1. safety protection standard

1. mechanical safety requirements

• the equipment shall be equipped with emergency shutdown device to ensure that the power source can be cut off quickly under abnormal conditions.
• Moving parts (such as screw rotor) shall be provided with protective cover to prevent injury caused by personnel contact.

2. Electrical Safety Code

• overload protection and short-circuit protection are required for the control circuit
• high-voltage components (e. g. motors, cables) shall meet the insulation level requirements to prevent leakage risks.

2. Performance Guarantee Standard

1. basic functional requirements

• the equipment shall output the design pressure and flow stably under the rated working condition
• pressure regulating device shall have ± 5% accuracy control capability

2. operational reliability

• continuous operation time should reach 2000 hours without fault
• critical components (e. g. bearings, seals) to be tested for durability

3. Energy Efficiency Management Standard

1. energy efficiency classification

• set the energy efficiency level according to the specific power (ratio of input power to exhaust gas volume)
• encourage the use of frequency control, waste heat recovery and other energy-saving technologies

2. test Method Requirements

• the energy efficiency test shall be carried out under standard working conditions (such as ambient temperature of 20 ℃ and relative humidity of 65%).
• Test data must be verified by a third party

4. environmental protection emission standards

1. noise control

• the noise value of the equipment shall meet the regional environmental protection requirements (such as industrial area ≤ 85dB residential area ≤ 70dB)
• need to configure silencer to reduce exhaust noise

2. oil and gas separation requirements

• the lubricating oil system shall be equipped with a high-efficiency oil and gas separator to ensure that the exhaust oil content reaches the standard.
• Waste oil needs to be recovered through special pipelines, and direct discharge is prohibited.

5. Installation and Maintenance Specification

1. installation foundation requirements

• the equipment shall be installed on a flat foundation, and the damping device shall meet the requirements for vibration frequency control.
• Metal hose shall be used for pipe connection to prevent leakage caused by stress transmission

2. maintenance Standards

• regular maintenance system is required (e. g. replacing filter element every 500 hours)
• maintenance records should be kept for at least 2 years to facilitate quality traceability.

Adaptation Standard for 6. Special Conditions

1. high temperature environment application

• A high-temperature cooling system is required to ensure that the lubricating oil temperature does not exceed 90°C.
• The motor shall be made of high temperature resistant insulating material

2. low temperature environment application

• preheating device shall be set to prevent solidification of lubricating oil
• the pipe shall be wrapped with insulation material

the standards described in this overview are applicable to conventional screw air compressors, and special scenarios (e. g. explosion-proof, food-grade applications) need to be implemented in conjunction with special technical specifications. Enterprises can according to the target market area, with reference to the corresponding national standards for product design and quality control.