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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Features and applications of bearingless motors Bearingless motor features and applications
The bearingless motor is based on the similarity of the principle of electromagnetic force between the magnetic bearing and the motor; the winding with the radial force in the magnetic bearing is mounted on the stator of the motor; the independent control of the motor torque and the radial levitation force is completed after decoupling control The bearingless motor has all the advantages of magnetic suspension magnetic bearing; it requires no repair and long life; the transmission of aseptic, non-polluting and toxic and harmful liquid or gas is a typical application of bearingless motor. It has been used as follows. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
1. The semiconductor industry requires corrosive chemical liquids in etching, plate making, cleaning or polishing processes; the quality of the product depends largely on the quality of the chemical liquid; the liquid transfer pump is a key component. Like acid, organic solvents, etc. Corrosive chemical liquid; the pump needs to be transported without pollution; and the pump needs to have corrosion resistance and resistance to certain temperatures. The traditional pneumatic and sheet pumps have a short life; most of the temperature resistance is as high as 100 °C; the motion valve and the foil are still There will be a small number of particles; liquid transmission also has uneven pulsation; affecting the quality of process disposal. The use of bearingless motor sealed pump can deal with the shortcomings of traditional transmission; greatly satisfied with the demand for fine semiconductor equipment production process. Current; The 300W bearingless motor sealed pump has been used in the semiconductor industry.
2. Under the harsh conditions of chemical environment radioactive environment or high temperature radiation environment; use of bearingless motor sealed pump for waste disposal; can deal with the problem of mechanical bearing wear and repair. In the chemical industry; the demand for useful sealed transmission and production system is further improved; Sealed pump with shaft seal; mechanical bearing demand is smooth; 80% of the reported problems are caused by seal failure; 20% are bearings, joints and other problems. For safe production; free from environmental pollution; use bearingless motor sealed pump It is the best choice. Currently; the Zurich Federal Institute of Technology and the Sulzer Pump Company have collaborated on the development and testing of the 30kW-free bearingless sealed pump prototype;
3. The heart of the life sciences is the perpetual motion of life; once the attack is difficult to correct, the use of artificial heart to replace some or all of the heart function becomes the gospel of the life of patients with heart disease. The blood pump using mechanical bearings can cause conflict and fever; Causes hemolysis, blood clotting and blood clots; even life-threatening patients. The unloaded permanent magnet motor-driven blood pump developed by the Zurich Federal Institute of Technology and Levitronix and the left ventricular assist device that can be transplanted into the human body have been used clinically.
Discussion and application of prospects China has been conducting magnetic levitation trains and magnetic bearings for many years; since the late 1990s; Jiangsu University, Shenyang University of Technology and Nanjing University of Aeronautics and Astronautics have been sponsored by the National Natural Science Foundation of China; Some achievements have been made in theory and experiment. Zhu of the School of Electrical Information Engineering, Jiangsu University? Autumn and the Swiss Federal Institute of Technology in Zurich. Prof. Hugel and others jointly launched the research and operation of the bearingless permanent magnet synchronous motor with a power of 4kW; it occupied the key technical problems of sensor detection and power loss; successfully developed the world's first bearingless permanent magnet thin film with 4kW power. Motor; estimated to be used in the chemical industry, semiconductor industry, etc. in 2004.
In the United States, Japan and other countries; bearingless motors have been used in life sciences, pharmaceutical occupations, chemical occupations, semiconductor industry, food industry, etc.. With the further development of China's economy; in many special electrical transmission areas will certainly change the traditional transmission And transmission methods; will play an important role in improving product quality, reducing costs, reducing pollution. Therefore, there is a great potential application in China's bearingless motor. The scraping machine is difficult to core 亢 τ τ τ τ 哂 哂 质蜕钤 庖.
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Bearingless motor features and applications
Source: China Bearing Network Time: 2013-05-15