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2 499 889

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(51)

IPC

F01D5/10(2006-01-01)

(21) (22)

Application

2012109596/06, 2012-03-13

(24)

Start date

2012-03-13

(22)

Actual filing date

2012-03-13

(45)

Published

2013-11-27

(72)

Inventor

Khabibullin Midkhat GubajdullovichIvannikov Vladimir FedorovichDodonov Mikhail ViktorovichChirkov Evgenij Gennad'EvichKhusnullin Vjacheslav KhazievichZakiev Farit Kavievich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Konstruktorsko-Proizvodstvennoe Predprijatie

REDUCTION METHOD OF DYNAMIC STRESSES IN ROTATING BLADES OF TURBINE LAST STAGE Russian patent published in 2013 - IPC F01D5/10

Abstract RU 2499889 C1

FIELD: machine building.

SUBSTANCE: reduction method of dynamic stresses in rotating blades of the power turbine last stage consists in the fact that aperture angle of the turbine flow part in meridional section is chosen in the range of 13…23°, and the ratio of mean diameter of the impeller of the power turbine last stage to height of the rotating blade at the turbine outlet is 3.5 to 4.0. Minimum thickness of the disc bed of the turbine last stage is chosen so that it equals to or is larger than width of the rotating blade body of the power turbine last stage in a root section.

EFFECT: invention allows increasing the turbine efficiency at sufficient dynamic strength of rotating blades of the power turbine last stage.

1 dwg

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RU 2 499 889 C1

Authors

Khabibullin Midkhat Gubajdullovich

Ivannikov Vladimir Fedorovich

Dodonov Mikhail Viktorovich

Chirkov Evgenij Gennad'Evich

Khusnullin Vjacheslav Khazievich

Zakiev Farit Kavievich

Dates

2013-11-27—Published

2012-03-13—Filed