Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1985-05-31
1987-05-26
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
415115, 415169R, 415176, 416 93R, 416174, F01D 506, F01D 508
Patent
active
046681612
ABSTRACT:
Ventilation apparatus for creating a fluid flow through the interhub spacing between the hubs of adjacent turbine wheels which are not integral with the rotor of the turbine includes an outward radial extension of the hub of the downstream wheel and/or a roundoff of the hub of the upstream wheel and/or a displacement of the axis of the hub of the upstream wheel from the axis of the hub of the downstream wheel for increasing the static pressure over a first predetermined arcuate portion of the interhub spacing in an ancillary fluid flow between the hubs and a seal circumferentially surrounding the hubs. Also, either alone or in combination with the static pressure increasing devices, static pressure reduction apparatus includes an outward radial extension of the hub of the upstream wheel and/or a roundoff of the hub of the downstream wheel and/or a displacement of the axis of the hub of the upstream wheel from the axis of the hub of the downstream wheel for decreasing the static pressure over a second predetermined arcuate portion of the interhub spacing in the ancillary flow. Preferably, the first predetermined arcuate portion is disposed diametrically opposite to the second predetermined arcuate portion.
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Miller Edward H.
Robbins Kenneth E.
Garrett Robert E.
General Electric Company
Pitko Joseph M.
Squillaro Jerome C.
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