Axial fan using electromagnetic bearing

Abstract

The invention discloses a kind of axial-flow air-machine which uses electromagnetic bearing. There are five parts, air-entering passageway, throttle equipment axial-flow compressor, exhaust worm-shell and supporting system. The axial-flow compressor consists of the compressor rotor that consists of grade 5 rotating impeller, compressor box that consists of grade 5 rectifier vane, front supporting electromagnetic bearing module, back supporting electromagnetic bearing module, transmission shaft module, and so on. The air-entering passageway of the axial-flow air-machine is head of the air-machine bearing. The front supporting bearing module of the air-machine rotating bearing, consist sof radial restricted bearing and radial electromagnetic bearing in turn. Back rotor supporting bearing module consist sof axial electromagnetic bearing, radial electromagnetic bearing and radial-axial restricted bearing in turn. Fixing a throttle equipment adapted by electricity on the back of the air-entering passageway of axial-flow air-machine. This equipment consists of electric implement, connected mechanism, several parallel rotating valves.

Description

technical field [0001] The invention belongs to the technical field of turbomachinery equipment, and in particular relates to an axial flow fan using an electromagnetic bearing, which can be used as a load device to test the load performance of a gas turbine in the entire working area. It can also be used in the form of drums and induced draft fans for ventilation in mine shafts and underground tunnels, air supply and exhaust in subways, air supply for metallurgy, chemical industry, wind tunnel tests, and boilers in thermal power plants. Background technique [0002] For gas turbine performance testing, countries around the world have adopted different methods, Germany uses hydraulic dynamometer, American GE company uses generator dynamometer, and Russia uses generator winding resistance wire to measure dynamometer. The ubiquitous problems are: the test equipment is huge, large in size, heavy in weight, large in investment, difficult to master and operate. It is the first t...

AI Technical Summary

Problems solved by technology

The common problems are: the test equipment is huge, large in size, heavy in weight, large in investment, difficult to grasp and operate

However, when the research and development of higher-power gas turbines is proposed, for example, the axial force of the fan matching the power of 10,000-20,000KW gas turbines will be as high as 64,200KN. Considering the safe and reliable operation of the bearing, when the safety margin is 1.5, the bearing must Axial force of 96300KN; if the original design uses more than 6-7 sets of parallel ball bearings, there will be technical problems that cannot be installed and lubricated, and even the axial flow fan cannot be manufactured

Images