Axial-flow blower

Abstract

The axial flow blower consists of intake channel, intake device, front casing, middle casing, back casing, front bearing, middle bearing, back bearing, rotor, drive shaft, back bearing casing and other parts. The middle baring assembly has three rows thrust ball bearings forming the middle axial bearing unit to bear the giant forward axial force the rotor assembly produces; and the back bearing assembly has sealing casing and thrust cavity to form booster cavity, introduces high pressure air the blower exhaust channel exhausts and constitutes the back bearing high pressure air guiding unloader. The thrust disc produces backwards axial force to balance most forward axial force of the blower rotor assembly. The combined function of these two devices makes the axial-flow blower capable of bearing giant axial force. The present invention is used in gas turbine and air system air source machine.

Description

Technical field [0001] The invention belongs to the field of fluid mechanical equipment, and particularly relates to a gas turbine test and an air system air source machine, which can be used for smelting blasting and mine ventilation, can bear a sufficiently large axial force, has good working reliability and is easy to use. Long life axial fan. Background technique [0002] In the field of gas turbine performance testing, the methods adopted by different countries in the world are different. Germany and other countries use hydraulic dynamometers, GE in the United States uses generator dynamometers, and Russia uses generator winding resistance wires to measure dynamometers. The common problems are: test The equipment is huge, large in size, heavy in weight, large in investment, and difficult to master and operate. The use of axial flow fans as the load to conduct gas turbine performance tests is the first initiative, which can overcome the above problems. However, due to t...

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Problems solved by technology

[0002] In the field of gas turbine performance testing, the methods adopted by countries around the world are not the same. Germany and other countries use hydraulic dynamometers, American GE uses generator dynamometers, and Russia uses generator winding resistance wires to measure dynamometers. The common problems are: test The equipment is huge, large in size, heavy in weight, large in investment, and difficult to grasp and operate

It is the first to use the axial flow fan as the load to carry out the gas turbine performance test, which can overcome the above-mentioned problems. However, due to the structural limitations of the existing axial flow fans, the axial force they can bear is too small, the working reliability is poor, and the service life is short. These problems also exist in smelting blast and mine ventilation

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