Magnetic levitation bearing technology can significantl […]
Magnetic levitation bearing technology can significantly improve the performance of some weapons and equipment, which has important strategic significance. Military equipment
The demand for magnetic levitation bearing technology includes the following areas:
Requirements for ship equipment: Low detectability can be reflected by quietness indicators. Improve the quietness of the submarine
Reduce vibration and noise on the submarine. Mechanical vibration of rotating parts is an important source of submarine noise. Magnetic suspension bearing
In the shaft system, there is an air gap between the rotor and the stator. The interaction force is transmitted through the magnetic force in the air gap.
Direct contact, thereby avoiding shock vibration which is unavoidable during mechanical contact, and improving the quietness of the submarine. America is volume
Countries that have early tried to reduce the noise of submarines using magnetic bearings, Ohio and Virginia submarines have adopted magnetic bearings
Bearing, each submarine contains hundreds of magnetic suspension bearings, which plays a key role in achieving quiet submarines. For example, using magnetic is
Bearing refrigeration system noise is only 73dB, which is 5-10dB lower than the conventional refrigeration system.
Aero Engine: Magnetic suspension bearings can meet the needs of high-speed and heavy-duty aero engines, and get rid of bearings
System dependencies. The use of magnetic levitation technology to support the turbine rotation can further expand the limiting speed of the engine, which is the future
An important technical direction for the development of air engines.
The operating conditions of aero engines are very harsh. The high temperature, high speed, and heavy load environment have electrical and electronic components on magnetic suspension bearings.
Make harsh use requirements. This is the main problem that needs to be solved when the magnetic suspension bearing is applied in aero engine
Magnetic levitation bearings can be used in small engines and large turbofan engines and intelligent engines with a thrust-to-weight ratio of 15-20.
Big application prospect. High-density flywheel energy storage: In military equipment, energy storage devices are widely used. The flywheel battery is the most promising energy storage device due to its high specific energy, large specific power, small size, fast charging (in minutes, and chemical batteries in hours), long life, and no pollution by exhaust gas. One way. The principle of flywheel energy storage is to use the rotational inertia of the flywheel to store energy. The energy is proportional to the square of the speed. Therefore, the key to the energy storage of the flywheel is to increase the speed of the flywheel. Due to the inorganic contact, the magnetic suspension bearing can be carried in a frictionless state in a vacuum environment. It is an effective way to increase the specific energy of the flywheel battery. The core technology of the flywheel energy storage is from the surface. Magnetic suspension bearing flywheel accumulator is an ideal energy storage device for aircraft carrier's electromagnetic ejector. It has been applied to the latest aircraft carriers in the United States. In some future military equipment under development, such as electromagnetic cannons, laser weapon energy storage, etc., magnetic suspension bearing flywheel energy storage technology also plays a vital role
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