During the manufacture of compressed air, the temperature tends to gradually decrease. At the beginning, because the air compression heat temperature is high, the moisture in the air remains vaporized. Heat exchange in the surrounding environment as it flows through the pipe causes the compressed air to cool down slowly. The lower the temperature, the more easily the water vapor in the compressed air will condense. When the compressed air is released from the discharge port during use, the pressure suddenly drops, the volume expands, and the temperature decreases, which causes the water vapor in the compressed air to further condense into water. .
The damage caused by water in compressed air is mainly manifested in: condensed water on pneumatic equipment will take away the lubricating oil, resulting in reduced or even damaged equipment. Condensate also accelerates the wear of the valves in the pipeline, causing malfunction or misoperation of the pneumatic control equipment; causing corrosion of the pipelines and equipment. If the water freezes at the low point of the pipeline, the pipeline may also burst. If water mist is contained in the compressed air for spraying, it will affect the adhesion of the paint during work, resulting in failure of painting.
Compressed air with water can be caused by a variety of reasons, not only caused by unreasonable process design, but also due to improper operation; there are structural problems of the equipment itself, as well as technical problems of equipment and control components.
