Leakage Characteristics of Gas Screw Seals Div. of Mechanical, Transportation Engineering, The Institute of Vocational Training

Format:

Conference/Event

Author/Creator:

Miyake, Kunihiro, author.

Conference Name:

SAE Aerospace Technology Conference and Exposition (1986-10-13 : Long Beach, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

Leakage characteristics of the screw gas seal having a rectangular screw groove on a shaft were investigated by varying the peripheral velocity up to 250 m/s and by using room temperature air.The various effects of helix angle, groove width ratio, aspect ratio, number of threads, etc, were examined both in stationary and rotating states.As a result, it was found that the seal performance was optimized by using a dimensionless parameter, the ratio of the cross-sectional areas of screw groove to screw rotor. Thus, the seal performance was optimized when this parameter was nearly equal to 1 10-3 or when the cross-sectional area of screw groove became nearly 0.1% of the cross-sectional area of screw rotor. The effects of aspect ratio, helix angle, groove width ratio and number of threads on the seal performance appear to be relatively unimportant

Notes:

Vendor supplied data

Publisher Number:

861836

Access Restriction:

Restricted for use by site license