2026-04-10Views：
the gas tank does not necessarily belong to special equipment. Whether it belongs to special equipment mainly depends on its storage medium, pressure and volume. The reasons are as follows:
special equipment refers to boilers, pressure vessels (including gas cylinders, the same below), pressure pipes, elevators, lifting machinery, passenger ropeways, large amusement facilities and special motor vehicles in the field (factory) that involve life safety and high risk. In November 2014, the AQSIQ published the newly revised catalogue of special equipment, which describes the pressure vessels as follows:
pressure vessel refers to a closed equipment containing gas or liquid and bearing a certain pressure. Its scope is specified as gas with a maximum working pressure greater than or equal to 0.1MPa (gauge pressure), liquefied gas and liquid with a maximum working temperature greater than or equal to the standard boiling point, fixed vessel and mobile vessel with a volume greater than or equal to 30L and an inner diameter (non-circular section refers to the maximum geometric dimension of the inner boundary of the section) greater than or equal to 150mm; contain gas cylinders with nominal working pressure greater than or equal to 0.2MPa (gauge pressure) and the product of pressure and volume greater than or equal to 1.0MPa · L, liquefied gas and liquid with standard boiling point equal to or lower than 60 ℃; Oxygen chamber.
From this it can be seen that:
1) If the gas storage tank does not meet the conditions of the pressure vessel, the tank is not a pressure vessel, so it may not be used as special equipment. If the gas in the gas storage tank is compressed air, the pressure is less than 0.1MPa, and the volume is less than 30L, it is not a pressure vessel and may not be managed as special equipment.
2) If the gas storage tank meets the conditions of the pressure vessel and belongs to the pressure vessel, the gas storage tank is a special equipment. If the gas tank gas is compressed air, the pressure is 1MPa, and the volume is 2000L, it is a pressure vessel and should be managed according to special equipment.
What oil is added to the air compressor needs to be determined according to the type of air compressor. Small piston air compressor generally use ordinary mechanical oil can, viscosity is not too high on the line. If it is a screw air compressor or sliding vane air compressor, it is necessary to use special lubricating oil. Air compressor oil mainly plays the role of lubrication, cooling, rust prevention, cleaning, sealing and buffering. Its type is roughly divided into three types: synthetic oil, semi-synthetic, mineral oil;
Biopharmaceutical is based on natural biological materials as the main raw material, including microorganisms, human body, animals and plants, marine organisms and so on. With the development of biotechnology, some synthetic biological agents have become the main source of raw materials for biopharmaceuticals. have pharmacological
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There are many types of air compressors. If they are divided into two types according to the lubricating oil method: one is an oil-free air compressor and the other is an oil-lubricated air compressor. These two kinds of air compressor equipment have their own advantages and disadvantages. Today we will analyze the advantages of oil-free air compressor.
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The reputation of "oil-free air compressor" depends on the users who have used it. When a brand reaches a certain user base, most people say that it is easy to use and the gas supply is stable, then this "oil-free air compressor manufacturer" must be a "oil-free air compressor enterprise" with good reputation and excellent product quality ".
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When we choose an oil-free water-lubricated air compressor, in addition to conventional parameters such as displacement and power, we generally pay attention to its cooling method. Generally, there are two main cooling methods for an oil-free water-lubricated air compressor: water-cooled and Air-cooled, then these two cooling methods
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