RUNNER FOR FRANCIS TURBINE, AND METHOD FOR MANUFACTURING THE SAME

RUNNER FOR FRANCIS TURBINE, AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To achieve easy construction of coating by thermal spraying or the like to a narrow part on the runner inner diameter side in manufacturing and to dispense with welding construction after thermal spraying. SOLUTION: A runner 1 for a Francis turbine includes a crown 2, a band 3...

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Hauptverfasser: MAEDA YUKIKO, NAKAGAWA NARITOSHI
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
HEATING
LIGHTING
MACHINES OR ENGINES FOR LIQUIDS
MECHANICAL ENGINEERING
OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
PRODUCING MECHANICAL POWER
WEAPONS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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creator MAEDA YUKIKO
NAKAGAWA NARITOSHI
description PROBLEM TO BE SOLVED: To achieve easy construction of coating by thermal spraying or the like to a narrow part on the runner inner diameter side in manufacturing and to dispense with welding construction after thermal spraying. SOLUTION: A runner 1 for a Francis turbine includes a crown 2, a band 3 and a plurality of runner blades 4 arranged between the crown 2 and the band 3. The runner blades 4 are divided into the crown side and the band side, and wear resistant treatment is applied to the respective surfaces of a crown side runner 1a with a crown side runner blade 4a integrated with the crown 2, and a band side runner 1b with a band side runner blade 4b integrated with the band 3. The divided parts of the runner blades 4 are connected by a fastening member. COPYRIGHT: (C)2011,JPO&INPIT
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SOLUTION: A runner 1 for a Francis turbine includes a crown 2, a band 3 and a plurality of runner blades 4 arranged between the crown 2 and the band 3. The runner blades 4 are divided into the crown side and the band side, and wear resistant treatment is applied to the respective surfaces of a crown side runner 1a with a crown side runner blade 4a integrated with the crown 2, and a band side runner 1b with a band side runner blade 4b integrated with the band 3. The divided parts of the runner blades 4 are connected by a fastening member. 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subjects BLASTING
HEATING
LIGHTING
MACHINES OR ENGINES FOR LIQUIDS
MECHANICAL ENGINEERING
OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
PRODUCING MECHANICAL POWER
WEAPONS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
title RUNNER FOR FRANCIS TURBINE, AND METHOD FOR MANUFACTURING THE SAME
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