Air compressor selection and how to improve the displacement

Shanghai granklin (group) co., ltd. is a domestic professional compressed air system manufacturer. our products include screw air compressor, permanent magnet frequency conversion air compressor, oil-free air compressor, medium pressure air compressor, two-stage compressed air compressor, water lubricated air compressor and complete sets of compressed air post-treatment equipment production, sales and service.

Granklin water-lubricated air compressors are widely used in laboratories, water treatment, biopharmaceuticals, environmental protection, printing, ships, machinery, textiles, petrochemicals, precision electronics, instrumentation, spraying, tobacco, nitrogen production, food processing, optics, Any field that requires clean compressed air, such as national defense scientific research.

Then choose the pressure of the air compressor. Of course, the size of the pipeline diameter and the number of turning points are also factors that affect the pressure loss. The larger the pipeline diameter and the fewer turning points, the smaller the pressure loss; on the contrary, the pressure loss The greater the loss.

Therefore, when the distance between the air compressor and each gas end pipeline is too far, the main pipe diameter should be appropriately enlarged. If the environmental conditions meet the installation requirements of the air compressor and the working conditions permit, it can be installed nearby at the gas end.

The second step of air compressor selection: determine the corresponding volume flow;

when selecting the air compressor, the volume flow rate of all gas-using equipment should be understood first, and the total flow rate should be multiplied by 1.2; Learn the volume flow parameters of gas-using equipment from gas-using equipment suppliers for air compressor selection; The transformation of air compressor station can refer to the original parameter values and the actual gas consumption situation for selection;

the third step of air compressor selection: determine the power supply capacity. Under the condition of constant power, when the speed changes, the volume flow and working pressure also change accordingly, the speed decreases, and the exhaust gas decreases accordingly, and so on.

Cooling effect: The temperature of the gas will increase during the compression process, and the temperature of the air compressor rotor and the casing will also increase accordingly. Therefore, during the suction process, the gas will be heated by the rotor and the casing and expand, so it will be reduced accordingly. Inhalation volume.

How to improve the traditional air compressor displacement is to improve the output coefficient, usually using the following methods:

1. When necessary, clean the cylinder and other parts.

2. The correct choice of the size of the clearance volume;

3. Adopt advanced cooling system;

4. Keep the tightness of the piston ring;

5. Reduce the resistance of gas inhalation;

6. Keep the air valve and stuffing box tight;

7. Maintain the sensitivity of the suction valve and exhaust valve;

dryer and cooler gases should be inhaled;

9. Appropriately increase the speed of the air compressor;

10. Maintain the tightness of the output pipeline, air valve, air storage tank and cooler;

selection of standard pressure parameters to match the working pressure control: that is, how much air pressure is required at work. Most air compressors for laboratory use are adjustable at 0-8BAR (about 0-8kg), which meets the air pressure requirements of experimental equipment.

Old irons who need to purchase water-lubricated air compressors may as well come to granklin group to ask for a price. the water-lubricated air compressor head produced by the factory's own brand is also the product with the highest sales volume in the field of oil-free air compressors.