In the use of air compressor in humid environment, comprehensive measures should be taken to deal with condensate, corrosion and electrical hazards. Here are the specific solutions:
1. Core Impact Analysis
- condensate accumulation
- after the humid air is compressed, the density of water vapor increases, and condensed water is easily separated out during cooling.
- Hazards emulsification of lubricating oil (loss of lubricity), corrosion of gas storage tank, excessive water content of compressed air.
- Corrosion of metal parts
- moisture accelerates the oxidation reaction inside the air compressor (such as oil core, pipe) and shell.
- Statistics for every 10% increase in humidity, the metal corrosion rate increases by more than 30%.
- Electrical system short circuit
- humid environment reduces the insulation strength, easy to cause the control box, sensor failure.
2. moisture-proof measures
1. Environmental control
- waterproof isolation: Add waterproof cloth or rain cover on the doors and windows of the air compressor room to prevent rainwater from directly invading.
- Ventilation and cooling: Add exhaust fan or air conditioner to maintain the temperature of the machine room ≤ 35 ℃ (high temperature will aggravate the generation of condensed water).
2. Equipment drainage
- manual drainage: Open the drain valve of the gas storage tank and oil and gas barrel before starting and after shutdown every day to drain the condensed water.
- automatic drain valve: Upgrade the electronic timing drain valve and set it to drain every 2 hours.
3. Lubricating oil management
- oil detection: Check the color of the lubricating oil every week, and replace it immediately when the emulsion turns white.
- Brand selection: The use of synthetic lubricants with strong emulsification resistance (such as PAO), although the price is high, the service life is extended by 50%.
4. Electrical protection
- insulation detection before the rainy season, use a megohmmeter to test the insulation of the motor winding, and the resistance ≥ 5MΩ is qualified.
- Component protection: Add waterproof cover for frequency converter and PLC, and stick sealing strip at the door seam of control box.
3. in-depth maintenance strategy
- optimization of post-processing equipment
- installation freeze dryer(pressure dew point up to 3 ℃) or adsorption dryer(Pressure dew point -40 ℃) to ensure that the compressed air is dry.
- Installation behind the reservoir oil-water separator filter residual moisture and oil.
- Cooling system upgrade
- water-cooled type: check the scaling of the cooler regularly and descale with chemical cleaning agent.
- Air-cooled models: Clean up the radiator dust to ensure heat dissipation efficiency.
- Emergency Treatment Plan
- inflow water treatment: If water enters the machine room, immediately stop the machine and cut off the power supply, disassemble the air inlet valve to clean up the accumulated water, and dry the motor (50 ℃ low temperature drying for 8 hours).
- spare parts reserve: Prepare the air filter, lubricating oil and other wearing parts, and quickly replace them after heavy rain.
4. cost-benefit comparison
| Measures | initial input | annual maintenance costs | benefit |
|---|
| automatic drain valve | ¥1500 | ¥0 | reduce artificial drainage by 80% |
| adsorption dryer | ¥25000 | ¥3000 | compressed air dew point stability, extend equipment life |
| electrical component waterproof cover | ¥800 | ¥0 | risk of short circuit reduced by 60% |
| upgraded Synthetic Lubricants | ¥0 | & yen;5000/year | oil change period extended 3 times |
conclusion: In humid environment, the air compressor needs to be protected by environmental isolation, enhanced drainage, oil upgrading and electrical protection. It is recommended to give priority to investment in automatic drain valves and dryers, which can reduce the failure rate by more than 40% in the long term.
