SWITCHING METHOD OF OPERATION MODE OF MOVABLE BLADE WATER TURBINE

Title:

SWITCHING METHOD OF OPERATION MODE OF MOVABLE BLADE WATER TURBINE

Document Type and Number:

Japanese Patent JPS59203884

Kind Code:

A

Abstract:

PURPOSE: To permit to transfer into electric power generating mode smoothly by opening runner blades excessively in a transferring process until a runner chamber is filled with water perfectly.

CONSTITUTION: When mode of operation is switched from a phase regulating mode into generating mode, an ON-OFF switch is put ON automatically and a runner blade bias signal, preset in a runner blade bias signal generating unit, is impressed to open the runner blade temporarily and partially for a short period of time until the runner chamber R has been filled with water. According to this method, the runner blade will never be provided with an excessive thrust force and the damages of the runner blades as well as a thrust bearing may be reduced.

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Inventors:

KUWABARA HISAO
WADA YUKIHIKO
TADOKORO MASAHIRO
SAKAYORI AKIHIRO

Application Number:

JP7816383A

Publication Date:

November 19, 1984

Filing Date:

May 06, 1983

Export Citation:

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Assignee:

HITACHI LTD

International Classes:

F03B15/04; F03B15/06; (IPC1-7): F03B15/04

Attorney, Agent or Firm:

Akio Takahashi

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