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Common Fault
Insufficient compressor displacement

Insufficient compressor displacement

Insufficient discharge volume is compared with the designed air volume of the compressor. Mainly from the following aspects: 1) Malfunction of the intake air filter: fouling is blocked, which reduces the exhaust volume; the intake pipe is too long and the pipe diameter is too small, which increases the suction resistance and affects the air volume, so the filter needs to be cleaned regularly. 2) The reduction of compressor speed reduces the exhaust volume: the air compressor is not used properly, because the exhaust volume of the air compressor is designed according to a certain altitude, suction temperature, and humidity. When the plateau is on, the suction pressure will decrease, etc., and the exhaust volume will inevitably decrease. 3) The cylinder, piston and piston ring are seriously worn and out of tolerance, which increases the relevant clearance and increases the leakage, which affects the displacement. When it belongs to normal wear, it is necessary to replace the wearing parts in time, such as piston rings. If the installation is incorrect, if the gap is not appropriate, it should be corrected according to the drawing. If there is no drawing, the experience data can be obtained. For the gap between the piston and the cylinder along the circumference, if it is a cast iron piston, the value of the gap is the diameter of the cylinder. 0.06 / 100 ~ 0.09 / 100; for aluminum alloy pistons, the clearance is 0.12 / 100 ~ 0.18 / 100 of the diameter of the gas diameter; steel pistons can take the smaller value of the aluminum alloy pistons. 4) The air leakage of the stuffing box is not strict, which reduces the air volume. The reason is that the stuffing box itself does not meet the requirements when it is manufactured; secondly, it may be due to the poor alignment of the piston rod and the center of the stuffing box during installation, resulting in air leakage due to wear and tear; generally, lubricating oil is added to the stuffing box. , It plays the role of lubrication, sealing and cooling. 5) The influence of the failure of the compressor suction and exhaust valves on the exhaust volume. Metal fragments or other debris fall between the valve seat and the valve plate, and the closure is not strict, resulting in air leakage. This not only affects the exhaust volume, but also affects the changes in the pressure and temperature of the interstage; the valve seat and the valve plate are not tightly contacted to form air leakage, which affects the exhaust volume. One is the manufacturing quality problem, such as valve plate warping, etc. The second is due to the serious wear of the valve seat and the valve plate, resulting in air leakage. 6) The spring force of the gas valve is not well matched with the gas force. If the elastic force is too strong, the valve will open slowly, and if the elastic force is too weak, the valve will not close in time. These will not only affect the air volume, but also affect the increase of power, as well as the life of the valve plate and spring. At the same time, it will also affect the changes of gas pressure and temperature. 7) The pressing force of the air valve is improper. If the pressing force is small, air leakage will occur. Of course, if it is too tight, the valve cover will be deformed and damaged.
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