To ensure the quality and safety of the compressed air system, it is necessary to comprehensively control the equipment selection, installation and commissioning, operation and maintenance, safety management and personnel training to form a full life cycle management system. The following are specific measures and key points:
1. equipment selection and configuration: source to ensure quality and safety
- matching equipment to requirements
- pressure and flow: Select the air compressor according to the rated pressure and flow rate of the gas equipment (such as pneumatic tools and spraying machines) to avoid equipment damage or insufficient pressure caused by overload operation.
- Oil content grade:
- food and pharmaceutical industries need to choose Class 0 oil-free air compressor(oil content ≤ 0.01 mg/m & sup3;) to prevent oil pollution products.
- General industrial gas can be used with oil air compressor + post-treatment equipment (such as oil removal filter, activated carbon adsorption tank) to reach Class 1-2 standard.
- Environmental Adaptability:
- high temperature, high humidity or corrosive environment need to choose explosion-proof, anti-corrosion type air compressor.
- In extremely cold areas, a preheating device shall be configured to prevent the lubricating oil from solidifying.
- Post-processing equipment configuration
- dryer: The adsorption dryer can reduce the dew point of compressed air to below -40 ℃ to prevent water vapor from condensing and corroding the pipeline.
- Filter:
- the pre-filter (5 μm) removes large particles of impurities.
- A precision filter (1 μm) captures tiny particles.
- The oil removal filter (0.01 μm) further purifies the oil.
- Gas tank reasonable design volume (usually 15%-30% of the air compressor displacement), buffer pressure fluctuation, and reduce the loss of equipment caused by frequent start and stop.
2. installation and commissioning: laying the foundation for standardized operation
- installation environment requirements
- good ventilation: The air compressor room shall be equipped with an exhaust device to avoid overheating of equipment or deterioration of lubricating oil caused by high temperature.
- Dust-proof and moisture-proof: The ground is paved with oil-proof floor, and the wall is installed with sound insulation materials to reduce dust and moisture intrusion.
- Safety Spacing: Keep the equipment at least 1 meter away from the wall and other equipment for maintenance and heat dissipation.
- Piping System Design
- material Selection:
- the dry compressed air pipeline is made of stainless steel or galvanized steel pipe to prevent corrosion.
- PVC or aluminum alloy pipes shall be used for the pipes containing humid air to avoid corrosion by condensed water.
- Slope and Drainage: The pipeline is designed with a slope of 1%-2%, and an automatic drain valve is installed at the end to discharge condensate regularly.
- Avoid sharp bends: Reduce pressure loss and ensure smooth airflow.
- Commissioning and acceptance
- pressure Test: Step up the pressure to the rated value after starting, and check whether the pipeline, valve and joint leak.
- Oil content detection: Use an oil detector (such as an infrared spectrometer) to verify whether the compressed air meets the standard.
- Load Test: Simulate the actual operating conditions and monitor whether the vibration, noise, temperature and other parameters of the equipment are abnormal.
3. operation and maintenance: daily management to ensure stability
- regular maintenance plan
- daily inspection:
- record the operating pressure, temperature, oil level and other parameters of the air compressor.
- Check whether the cooler and filter are blocked and the drain valve is unblocked.
- Weekly maintenance:
- clean the air filter element and replace the oil core (if the oil content exceeds the standard).
- Check belt tightness (belt drive model).
- Monthly maintenance:
- replace the lubricating oil (full synthetic oil life of about 4000-8000 hours).
- Check whether the electrical components (such as contactors and sensors) are aging.
- Critical component monitoring
- oil core: When the pressure difference exceeds 0.1MPa, it needs to be replaced, otherwise the oil content will exceed the standard.
- Air filter: Blockage will cause insufficient air intake and cause high temperature alarm.
- Cooler: Dust deposition will reduce the heat dissipation efficiency, and it needs to be purged or cleaned regularly.
- intelligent monitoring system
- install sensors to monitor pressure, temperature, oil content and other parameters in real time, and automatically alarm when overrun.
- Remote monitoring of equipment status through the Internet of Things platform, early warning of failure risks.
4. Safety Management: Preventing Risks and Ensuring Personal and Equipment Safety
- safety protection device
- pressure protection: Install safety valve (set pressure should be 10% higher than rated pressure) to prevent overpressure explosion.
- Temperature protection: Set high temperature alarm (usually ≤ 110 ℃), automatic shutdown over temperature.
- Leakage protection: The distribution box is equipped with leakage circuit breaker to prevent electric shock accidents.
- Operation specification and emergency plan
- operating Procedures:
- before starting, check that there is no debris around the equipment and the valve is in the correct position.
- Do not touch hot parts (such as exhaust pipes, oil coolers) during operation.
- When the machine is stopped, the pressure is relieved first, and then the power is turned off.
- Emergency treatment:
- in case of leakage, immediately close the gas source, evacuate personnel and set up a warning area.
- Use dry powder fire extinguisher in case of fire. Do not use water to extinguish fire (electrical fire).
- Safety identification and training
- post warning signs around the equipment (e. g. "High Pressure Danger" "No Touch").
- Regularly organize safety training, simulation drill leakage, fire and other scenarios, improve the emergency response capacity of employees.
5. Personnel Training and Qualification Management: Enhancing Professional Competence
- operator training
- theoretical training: Learn the principle, structure and safety specification of air compressor.
- Practical operation training: Start, stop and adjust parameters under the guidance of the instructor.
- Assessment and certification after passing the theoretical examination and practical operation evaluation, a work license will be issued.
- Qualification of maintenance personnel
- maintenance electrician shall hold Special Operation Certificate (Electrician).
- Pressure Vessel Operation Certificate shall be obtained for high-pressure operation (such as gas tank maintenance).
- Continuing education
- regularly participate in the manufacturer's technical training to understand the maintenance points of new equipment (such as permanent magnet variable frequency air compressor).
- Learn industry cases (such as product pollution caused by a factory's failure to replace the oil core in time) to strengthen risk awareness.
6. Compliance and Certification: Meeting Regulatory and Industry Standards
- device Certification
- air compressor needs to pass CE certification(EU), UL certification(United States) and other international standards.
- Oil-free air compressor to be obtained ISO 8573-1 Class 0 certification prove that the oil content is up to standard.
- Pressure Vessel Management
- gas storage tanks need to be registered with the local market supervision department and regularly carried out. Pressure test(Usually every 3 years).
- The safety valve and pressure gauge shall be subject to mandatory verification and affix qualified labels.
- Environmental requirements
- noise control: the noise of the air compressor room shall be ≤ 85dB(A), otherwise a muffler or sound insulation cover shall be installed.
- Waste oil treatment: the replaced lubricating oil shall be recycled by a qualified unit, and it is forbidden to dump it at will.
