|
Abstract: A
mathematical procedure is proposed to calculate the inter-lobe clearance
between two mating screw rotors in contact state, in which the affect
due to the bearing clearance and the imperfections in compressor housing
manufacturing can be quantified with a higher accuracy. So the
mathematical procedure can be used to quantify eventual rotor
interference in screw compressors due to the bearing clearance and the
imperfections in compressor housing manufacturing. The results show that
the bearing clearances and the imperfections in casing manufacturing
change the position of rotor shaft, consequently alter the inter-lobe
clearance distribution along the contact line greatly. Some of the
positions of rotor shaft minimize the inter-lobe clearance along the
contact line which is in the hermetic segment, therefore they cause
rotor interference possibly which lead to rotor abrasion or rotor
seizing-up.
Key
words: Screw
compressor Clearance Interference
CLC No: TH455
国家自然科学基金资助项目(10375046).
Received 20040517, received in revised form 20050211
|