METHOD OF MAINTAINING HYDRAULIC PUMP OF THE HYDRAULIC TRANSMISSION IN A RENEWABLE ENERGY TURBINE GENERATOR AND HYDRAULIC PUMP IN A RENEWABLE ENERGY TURBINE GENERATOR

Title:

METHOD OF MAINTAINING HYDRAULIC PUMP OF THE HYDRAULIC TRANSMISSION IN A RENEWABLE ENERGY TURBINE GENERATOR AND HYDRAULIC PUMP IN A RENEWABLE ENERGY TURBINE GENERATOR

Document Type and Number:

WIPO Patent Application WO/2013/030874

Kind Code:

A1

Abstract:

A hydraulic pump comprises (1) an outward ring (24), including demountable blocks (30) comprising piston cylinders (32), and an inward ring (21), comprising a ring cam (23), coupled through a drive shaft (8) to the blades of a turbine (4). To enable maintenance, the outward ring is decoupled from a torque limiting device (16, 17) and rotated relative to the inward ring. Demountable blocks are then removed from the outward ring using a crane (61) including a line (62) extending from above the centre of mass of the demountable block and including a resilient portion (66) so that although the crane supplies the majority of the force required to remove the demountable block, an operator provides some force, enabling the process to be controlled. The method is suitable for maintaining large hydraulic pumps in wind turbine nacelles (2).

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WO/2013/097858	METHOD FOR TRANSPORTING A CURVED WIND TURBINE BLADE AND ASSOCIATED TRANSPORTATION DEVICE
WO/2015/158349	TOWER SEGMENT
WO/2010/009544	WIND TURBINE WITH SIDE DEFLECTORS

Inventors:

SALTER STEPHEN (GB)
STEIN UWE (GB)
DODSON HENRY (GB)
FOX ROBERT (GB)
ROBERTSON ALASDAIR (GB)
MCGRATH TOM (GB)

Application Number:

PCT/JP2011/004824

Publication Date:

March 07, 2013

Filing Date:

August 30, 2011

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
SALTER STEPHEN (GB)
STEIN UWE (GB)
DODSON HENRY (GB)
FOX ROBERT (GB)
ROBERTSON ALASDAIR (GB)
MCGRATH TOM (GB)

International Classes:

F03D1/00; F03D9/00; F03D11/00; F03D11/02; F04B1/053

Domestic Patent References:

WO2009076757A2

2009-06-25

Foreign References:

EP2154368A2	2010-02-17
DE4318073A1	1993-12-09
GB2011050355W	2011-02-23

Attorney, Agent or Firm:

TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (Ambassador Roppongi Buildings 16-13, Roppongi 3-chome, Minato-k, Tokyo 32, JP)

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