When the piston air compressor generates more carbon deposits at the exhaust valve and the exhaust pipe, the exhaust valve will be inflexible and the shut-off is not tight, causing the exhaust gas to flow back to the cylinder and repeat the compression (ie, secondary compression). To make the gas temperature rise rapidly. The high gas temperature intensifies the oxidation reaction of the lubricating oil, and the heat of reaction cannot be released in time, so that the temperature of the gas in the exhaust pipe continues to rise. When the temperature reaches the self-ignition point of the lubricating oil, the lubricating oil accumulated in the carbon deposit starts to burn. The incomplete combustion products, the thermal decomposition products of the oil, the oil mist in the gas and the air constitute an explosive gas, and an explosion occurs. Therefore, the fire explosion caused by carbon deposits is a great threat to the safe operation of air compressors.
At the end of the exhaust, the clearance volume piston air compressor must have a small part of high pressure gas remaining in the cylinder due to the fact that the piston cannot be attached to the wall surface of the cylinder end. This part of the high pressure gas occupies in this state. The cylinder volume is called the clearance volume of the air compressor.
Water Separator The water gas separator is a device for collecting and removing water condensed from air or gas during cooling.
The air reservoir is a container for storing compressed air and gas discharged from the air compressor. The air reservoir facilitates the elimination of pulses in the exhaust line and serves to store and supplement the supply of compressed air when the demand is greater than the capacity of the air compressor.
The dew point is like dew on the temperature drop at night, and the temperature drop in the compressed air system also produces moisture.
The dew point is the temperature at which the humid air is cooled to saturation when the partial pressure of water vapor is constant. Why is this? Air containing moisture can only hold a certain amount of water. If the volume is reduced by pressure or cooling, there is not enough air to hold all of the water, so more water is analyzed as condensed water. The air leaving the cooler is usually fully saturated. Condensate in the separator shows this, so any drop in air temperature will produce condensate.
Air compressor term: specific power, also known as volumetric energy.
Refers to the power consumed by the air compressor to draw in a unit of air per unit time, usually expressed in kW/m3/min. The smaller the volumetric ratio at the same exhaust pressure, the less power is consumed. It is a measure of the true efficiency of an air compressor.
Piston air compressor classification [according to air compressor cooling method] (1) Water-cooled air compressor: uses the circulating flow of cooling water to guide away the heat during compression.
(2) Air-cooled air compressor: use its own wind power to guide the heat away from the compression process.
Piston air compressor classification [according to air compressor exhaust pressure] (1) low pressure air compressor: exhaust end pressure is 3 to 10 gauge pressure.
(2) Medium-pressure air compressor: The final pressure of the exhaust gas is between 10 and 100 gauge.
(3) High-pressure air compressor: The final exhaust pressure is between 100 and 1000 gauge.
(4) Ultra-high pressure air compressor: The exhaust pressure is above 1000 gauge pressure.
Classification of piston air compressors [divided according to the action mode of the piston] (1) Single-acting air compressor: The gas is compressed only on one side of the piston, also called a single-acting air compressor.
(2) Double-acting air compressor: Gas can be compressed on both sides of the piston, also called double-acting or multi-action air compressor.
(3) Multi-cylinder single-acting air compressor: an air compressor that uses one side of the piston to compress and has multiple cylinders.
(4) Multi-cylinder double-acting air compressor: Compressing air on both sides of the piston, and having multiple cylinders.
Classification of piston air compressors [by air compressor displacement] (1) Micro air compressor: gas volume <1 (m3/min).
(2) Small air compressor: The gas transmission volume is between 1 and 10 (m3/min).
(3) Medium-sized air compressor: the gas transmission volume is between 10 and 100 (m3/min).
(4) Large air compressor: the air volume is > 100 (m3/min).
Classification of piston air compressors [divided by cylinder arrangement method] (1) Series air compressor: A multi-stage air compressor with several cylinders arranged in sequence on the same shaft, also called a single-row air compressor.
(2) Parallel air compressor: A multi-stage air compressor with several cylinders arranged in parallel on several shafts, also known as a double-row air compressor or a multi-row air compressor.
(3) Double air compressor: It consists of a series of parallel and parallel type air compressors.
(4) Symmetrical balance air compressor: The cylinders are arranged horizontally on both sides of the crankshaft with the crankshaft journals 180 degrees apart from each other, arranged in an H-shape, and the inertia force can be basically balanced.
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