Air compressor（2）

Air compressor（2）

The compressor is directly driven by the electric motor, which causes the crankshaft to rotate, and drives the connecting rod to cause the piston to reciprocate, causing the cylinder volume to change. Due to the change of the pressure in the cylinder, the air enters the cylinder through the air filter through the intake valve. In the compression stroke, due to the reduction of the cylinder volume, the compressed air passes through the exhaust valve and enters through the exhaust pipe and the one-way valve. The gas storage tank, when the exhaust pressure reaches the rated pressure of 0.7MPa, is controlled by the pressure switch and automatically stops. When the pressure of the gas storage tank drops to 0.5-0.6MPa, the pressure switch is automatically connected and activated.

The air compressor is the core equipment of the pneumatic system and the main body of the electromechanical bleed air source device. It is a device that converts the mechanical energy of the motive force into gas pressure energy, and is a pressure generating device for compressed air.

When preparing to purchase an air compressor, you must first determine the working pressure required by the air end, plus a margin of 1-2 bar, and then select the pressure of the air compressor (the margin is based on the installation location of the air compressor The pressure loss of the pipeline distance to the actual gas end, according to the length of the distance between 1-2 bar, appropriately consider the pressure margin). 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 greater the pressure loss. Therefore, when the distance between the air compressor and each gas end pipeline is too far, the diameter of the main pipeline 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 near the gas end.