The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 1987
Filed:
May. 31, 1985
Edward H Miller, Rexford, NY (US);
Kenneth E Robbins, Burnt Hills, NY (US);
General Electric Company, Schenectady, NY (US);
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.