Knowledge about air compressor gas storage tank!
The main function of the air storage tank in the air compression system is to ensure the stability of the air supply. The compressed air deposits water in the air storage tank and regulates the air
The unbalanced air consumption of the moving equipment causes air pressure fluctuations, increases the pressure stability of the air equipment, or reserves part of the compressed air.
When the air compressor fails, the user can use this part of the compressed air for emergency treatment of pneumatic equipment or pneumatic control systems.
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Selection of gas storage tank
1. Pressure selection
According to the pressure of the gas storage tank, it can be divided into high pressure gas storage tank, low pressure gas storage tank, and atmospheric gas storage tank. Optional gas storage tank pressure
As long as it is greater than or equal to the exhaust pressure of the air compressor, that is, the pressure is 8 kg, and the pressure of the air storage tank is not less than 8 kg;
2. Volume selection
The volume of the optional air storage tank is about 0.3-0.5 of the air compressor displacement; if the environmental conditions permit, you can choose
The large-volume air storage tank helps to store more compressed air and better pre-dewater.
Example: If the air compressor displacement is 1 cubic meter per minute, the pressure is 8 kilograms. According to the calculation formula for the selection of the gas storage tank, the
Volume = the range between the displacement of the air compressor * 0.3 or the displacement of the air compressor * 0.5, (not less than one third or five of the displacement
One part), a gas storage tank with a volume of 0.3 cubic or 0.2 cubic is recommended; if the gas consumption still needs to be increased in the future, the volume of the gas storage tank can also be used
Enlarge the space appropriately, such as 0.5 cubic meter, 0.6 cubic meter, or 1 cubic meter, etc.;
3. Material selection
The gas storage tanks can be divided into carbon steel gas storage tanks, low alloy steel gas storage tanks, and stainless steel gas storage tanks according to the selected materials.
Machines, refrigeration dryers, filters and other equipment are used together to form the power source compressed air station for industrial production. Most industries choose carbon
Steel gas storage tanks and low-alloy steel gas storage tanks (the yield strength and toughness of low-alloy steel gas storage tanks are higher than that of carbon steel gas storage tanks, and the price is relatively high.
Higher); stainless steel gas storage tanks are mainly used in the food industry, medical pharmacy, chemical industry, microelectronics, etc. to produce high comprehensive performance
(Corrosion resistance and formability) equipment and machine parts industry. The user can choose according to the actual situation.
 Internal structure of air compressor 1.High-efficiency and energy-saving screw host The main engine adopts a large rotor, low speed design, and contains two independent compression units 2.High energy-saving permanent magnet motor The main motor is a high-efficiency and energy-saving motor with a protection level of IP55 carefully selected according to the needs of the air compressor application, all of which have reached the national first-class energy efficiency standard 3.High-efficiency energy-saving filtration system The air filter does not need to change the air flow direction when filtering, and directly passes through the filter medium to reduce pressure loss. It is more energy-efficient than traditional air filters. It has a large filtering area, high precision and longer life. |
The service life of the gas storage tank
The gas storage tank is a special equipment, and the manufacturer will give a recommended service life, which is basically 10 years at present. This does not mean more than 10
The year-old gas storage tank cannot be used. If it is more than 10 years old and has been submitted to the Quality Supervision Bureau for inspection every year and passed the inspection, it can also be used. But right
If it has been used for less than 10 years but fails to pass the inspection, it cannot be used. According to the inspection results of the Quality Supervision Bureau to determine whether it can continue
Continue to use. It is recommended to use regular large-scale well-known brand gas storage tanks.
The product quality certificate is marked with a simple pressure vessel, which can be exempted from inspection within 7 years of validity, and registration is not required for use.
Documents are inspected in accordance with the regulations of local quality supervision bureaus.
It also requires a qualified installation unit to install it.
Generally less than 1 cubic tens of kilograms (including ten kilograms), all belong to simple pressure vessels, and the country is exempt from inspection. On the nameplate of the gas tank and
For gas storage tanks of more than 1 cubic 16 kg, you need to go to the local quality inspection office to apply for inspection. Not only is it necessary to apply for a special equipment use registration certificate,
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The difference between the gas tank connection port
There are two ways to connect the air inlet and outlet of the gas storage tank, one is thread and the other is flange.
1. Threaded connection
The threaded interface is a thread-tooth type, which is suitable for connections with a relatively small diameter. Rp is the unit, and Rp means internal thread. like
Rp1/2 means that the threaded interface of the gas tank is one and a half inches of internal thread, and Rp2 is two inches of internal thread. The dimensions of the threaded interface are: 1.5
Inch, 2 inch.
2. Flange connection
The flange unit is DN, which refers to the nominal diameter of the pipe, also known as the nominal diameter. For example, DN50 means the nominal diameter is 50mm.
When connecting, fix the pipes on different flanges, add flange gaskets in the middle, and then use bolts to connect the two flanges to the
At the same time, the flange connection is easy to disassemble, and the sealing effect is better than that of the thread. Generally, flange connections are used for larger diameters. Ruler of flange interface
There are: DN80, DN100, DN125, DN150. These are conventional, and there are non-standard ones, such as DN200,
DN300 these are non-standard.
Not all specifications of gas storage tanks have threaded and flanged interfaces, and there is no specific basis for choosing flange or threaded interface, mainly depending on the size of the air compressor interface.
As an important accessory on the gas storage tank, the safety valve of the gas storage tank is often critical for the entire system.
effect. Due to its particularity, the safety valve needs to be adjusted by professional operators. Before use, it needs to be related
Inspection work. During the inspection, follow the steps below in sequence:
To further adjust the operation: continuously adjust the bolt position to achieve a more appropriate opening position. Again through constantly
The inspection and adjustment of the safety valve is repeated in this way to ensure that the safety valve can be opened normally.
(1) First cut off the gas supply source;
(2) Provide water supply and start to check the operation. Observe the pressure gauge, if the safety valve does not open under a certain pressure, you need to
The gas storage tank should be used strictly in accordance with the gas storage specifications, the safety valve and pressure gauge must be installed correctly, and every year
All have to report for inspection (the actual situation is subject to the requirements of the local quality supervision bureau). If the production cannot be stopped, one set must be reserved and it cannot exist.
Fluke. In any case, safety is always the first priority.
Precautions for the use of gas storage tanks
01 The gas storage tank is strictly prohibited from over-pressure and over-temperature, and the operator should ensure that the gas storage tank is in normal working condition;
02 It is strictly forbidden to use open flames around the gas storage tank or on the container, and it is forbidden to use the open flame to inspect the inside of the container. When the gas storage tank is under pressure, no repairs, hammering and other impacts on the tank body are allowed;
03 For oil-lubricated compressors, it must be deoiled and water removed. The oil content, water vapor content and solid particles of the compressed air
The sub-dimensions and concentration levels meet the requirements of Appendix A of GB/T3277-91 "Compressed Air Quality Levels for General Purposes" before entering the gas storage tank
04In view of the contact between oil and air in the air compressor, once the temperature is too high, it is easy to produce carbon deposits and spontaneous combustion and oil explosion ignition mechanism (detailed
See GB10892-89), the compressed air entering the air storage tank must not exceed the design temperature of the tank. In order to avoid the exhaust temperature from being too high, the air
The air compressor must check the over-temperature parking device regularly, and check the heat transfer surface (filter, separator and cooler) and clean it regularly.
05 For compressors with oil, all pipelines, containers (air tanks) and accessories from the exhaust port to the point where the compressed air temperature is 80 degrees should be checked regularly. Any carbon deposits should be effectively removed (including compressor cylinder head deposits). Charcoal).
06 The use and maintenance of air storage tanks and air compressors must strictly follow the "Fixed Air Compressor Safety Rules and Operating Regulations",
"Safety Requirements for Positive Displacement Air Compressors" and "Safety Requirements for Compressors Used in Process Flows" shall be implemented.
07 If the gas storage tank user does not implement the above requirements and warning clauses, it may cause the gas storage tank to fail and cause serious consequences. Please remember that the user!