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:
Jun. 18, 2019
Filed:
Mar. 02, 2015
Lappeenrannan Teknillinen Yliopisto, Lappeenranta, FI;
LAPEENRANNAN-LAHDEN TEKNILLINEN YLIOPISTO LUT, Lapeenranta, FI;
Abstract
An electrical turbo-machine includes a stator (), a rotor (), and a turbine section () driven with a working flow containing vaporizable material, for example water, in vaporized form. The rotor includes cooling channels (-) for conducting, through the rotor, a cooling flow containing the vaporizable material in liquid form. The rotor is arranged to conduct the cooling flow through an area where an impeller or impellers (-) of the turbine section are directly connected to the rotor and conduct the cooling flow to a same room to which the working flow comes out from the turbine section. The above-presented cooling system facilitates constructing the electrical turbo-machine as a hermetic structure in a power plant where bearings of the electrical turbo-machine are lubricated by the vaporizable material, a supply pump is directly connected to the rotor, and the vaporizable material in gaseous form fills the gas spaces of the stator.