During the operation of the screw rotary air compressor, various data show the "health status" of the equipment during operation, and experienced technicians can find problems and energy-saving space from the actual data.
Grasping some basic general data in the operation of screw rotary air compressor is of great help to us in maintaining equipment and summarizing rules for better use of air compressors. Let's find out!
1. Air end operating data
★ The outlet temperature of the machine head is below 95℃ for air-cooled machines, and below 90℃ for water-cooled machines. High temperature tripping will occur if it exceeds 110℃;
★ The ambient temperature of the air compressor is 0-40℃. Too high will cause the temperature of the main engine to be too high, and too low will cause difficulty in starting the air compressor;
★ The vibration value of the head of the air compressor: the vibration value of the air compressor main body should be less than 7.5mm/s.
2. Three filter operation data of air compressor
★ After the oil is separated, the oil content of the exhaust gas is about 1-5ppm, and the oil content in the general compressed air is: 3ppm;
★ The control panel displays: the air filter pressure difference value is lower than -0.05ba, the filter element must be replaced;
★ Air filter particles: 98% for 1 micron; 99.5% for 2 micron; 99.9% for 3 micron;
★ Filter particles of oil filter: 10μm; the filtering precision of oil can reach 0.1μm;
★ Generally, the newly-changed oil partial pressure difference is about 0.2bar; the maximum pressure difference of the oil-air separator cannot exceed 0.8bar, and it must be replaced immediately if it exceeds;
★ Oil content: The initial pressure difference is ≤0, and the maximum working temperature of 2mpa is 120℃;
Oil filter: The maximum working temperature is less than 120℃, and the maximum working pressure is 1.4-2.5mpa;
Air filter: The working temperature is less than 120℃, and the maximum working pressure is: 1.4-1.5mpa.
3. Other data
★ The temperature difference between cooling water input and output is about 15 degrees. Too large or too small indicates that there is a problem with the cooling system. And the cooling water flow rate is 3.7 liters/sec or more;
★ A. The formula for calculating the gas output of the air compressor is: 1 cubic meter of gas produced per 6KW; gas output of 1 kilowatt is 0.1633 m3
B. (1) British horsepower (HP) (hp)=0.746KW=746W;
(2) Metric horsepower (HP) (hp)=0.735KW=735W (usually converted by this unit);
★ Conversion table of air compressor power: cubic *6.6;
★ Air compressor oil: flash point temperature is 200℃, freezing point is -20℃.
