Denel screw air compressor is controlled by microcomputer, which has the function of self-diagnosis and protection, clearly indicates and controls the operation and shutdown of the air compressor, and ensures that the air compressor can work safely for users 24 hours without special care.
2, low noise and low consumption
Denel screw air compressor adopts Swedish SKF bearing, and the rotor is balanced by dynamic balancing machine, which has good balance, small vibration and low noise.
3. High compression ratio
3. 1 Denel screw air compressor has the highest single-stage compression ratio in the world, and the highest single-stage compression ratio can reach 18, so the working pressure of Denel screw air compressor can reach 1.5MPa.
4. Low oil content
Oil-gas separation device is the most critical part of screw air compressor. The Denel screw air compressor adopts the products of German Mann Company, with reliable technical indicators and oil content below 3ppm.
5. Screw air compressor has less wearing parts and long continuous operation time.
5. 1 The common wearing parts of this machine are: air filter element and oil filter element. This wearing part can be replaced regularly, or the corresponding parts can be replaced according to the LED lights on the computer panel.
5.2 SKF bearing is adopted, which has a long service life and ensures the long-term continuous operation of the screw main engine ≥ 50,000 hours.
6. High import rate and high quality system guarantee.
6. 1 Denel Company adopted a large number of high-quality imported components to ensure the stability of product quality. At present, the products are all imported parts except the machine cover, motor, high-voltage electric cabinet and oil-gas separation barrel.
6.2 Gas path system: The third-generation high-efficiency screw main engine, the oil-gas separation device of German Mann Company and the CKD pressure regulating valve imported from Japan are adopted to ensure the production of high-quality compressed gas.
6.3 Oil system: The oil filter of German Mann Company can reliably filter out impurities in lubricating oil, and ensure the smoothness, lubrication and heat dissipation of the oil system.
6.4 Cooling system: high-quality imported cooler is adopted, and the design premise is high temperature and high humidity environment. The design of low temperature difference is adopted, and the temperature of water rises by 6 ~ 8℃ to ensure that the outlet temperature of air compressor is less than = 40℃ (the temperature rise of water in domestic similar screw air compressors is generally around 13 ~ 15℃, and the outlet temperature of air compressor is at least around 45℃).
6.5 The design ambient temperature of DENEL screw air compressor is 46℃, while the design ambient temperature of domestic similar products is generally 38℃.
6.6 Electrical components: components imported from Japan and other countries are adopted to ensure reliable system control.
7. Other mechanical structures
The connection mode between the main engine and the motor is coupling connection. Its characteristics: the flexible connection between the main engine and the motor is reliable, which is convenient for oil filling and maintenance of the motor, and the single piece is light in weight and convenient for on-site maintenance. Domestic similar products are directly connected with the motor, and the bearing end of the motor shaft is not convenient for oil filling, so it is difficult to maintain it on site once it fails.
① Perfect tooth profile: a patented product formed by effectively improving the tooth profile of the German GHH rotor by using the cylinder block of the third generation high-efficiency spiral engine. The main and auxiliary gears are changed from five teeth to six teeth, which improves the thermal efficiency by 10- 12% and saves electricity by 25% compared with the common screw type (four teeth are changed to six teeth) in China. This tooth type has been patented in Britain and the United States.
② Fully sealed shaft seal: completely sealed without oil leakage.
③ High efficiency rotor: After a long period of heat treatment and grinding, the rotor has lower leakage and higher efficiency than other models.
④ Bearings designed according to 100000 hours: special linear bearing support, decomposition of stress strength, and self-contained lubricating oil to avoid dry friction and prolong the service life of bearings.
Selection of volume flow:
(1) when choosing the volume flow of the air compressor, first of all, you should know the volume flow of all gas-using equipment, and multiply the total flow by 1.2 (i.e., enlarge the margin by 20%);
(2) Kyle is selected according to the new use flow value provided by the design institute;
(3) To know the volume flow parameters of gas equipment from gas equipment suppliers for selection;
④ The transformation of air compressor station can be selected by referring to the original parameter values and combining with the actual gas consumption;
Correct selection is beneficial to both users and air compressor equipment. Too many choices are wasteful, and too few choices may lead to the air compressor being under load for a long time, or the air is not enough or the pressure cannot be pumped up.
Relationship among Power, Working Pressure and Volume Flow: Brand of Air Compressor
Under the condition of constant power, when the rotating speed changes, the volume flow and working pressure also change accordingly; For example, for a 22KW air compressor, the working pressure is determined to be 7bar when manufacturing, and the rotation speed is calculated according to the technical curve of the compressor main engine, and the displacement is 3.8m3/min; When the working pressure is determined to be 8bar, the rotating speed must be reduced (otherwise the driving motor will be overloaded), and the displacement at this time is 3.6m3/min; Because the speed decreases, the exhaust gas decreases accordingly, and so on.
The choice of power is that the power supply capacity can meet the use power of the matching drive motor under the condition of meeting the working pressure and volume flow.
Therefore, the steps to choose an air compressor are: first determine the working pressure, then determine the corresponding volume flow, and finally the power supply capacity.