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LOW MAINTENANCE STATIONARY TO MOBILE COMPONENTS LUBE TRANSFER SYSTEM FOR WIND TURBINE GEARBOX

IP.com Disclosure Number: IPCOM000224575D
Publication Date: 2012-Dec-31
Document File: 3 page(s) / 132K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present invention relates generally to wind turbine design and construction, and more particularly to design and construction of low maintenance stationary to mobile components lube transfer systems for wind turbine gearboxes. Specifically, the present invention arranges technology of piston rings and method of transferring fluid from a static to a moving part. The key advantages of the present invention comprise zero or negligible oil leakage, no maintenance for at least twenty years, no pressurized air flow for sealing, and easy accommodation into limited space.

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LOW MAINTENANCE STATIONARY TO MOBILE COMPONENTS LUBE TRANSFER SYSTEM FOR WIND TURBINE GEARBOX

BACKGROUND

The present invention relates generally to wind turbine design and construction, and more particularly to design and construction of low maintenance stationary to mobile components lube transfer systems for wind turbine gearboxes.

Generally, lube transfer systems allow transfer of lube from stationary to mobile components in wind turbine gearboxes. However, conventional lube transfer systems suffer numerous design constraints. For example, conventional lube transfer systems of the wind turbine gearboxes suffer from oil leakage, sealing, high maintenance requirements and space accommodation complexity.

In order to overcome the issues of design constraints, numerous design concepts are proposed for construction of the lube transfer systems for the wind turbine gearboxes. For example, one design concept proposes an axial transfer route for transfer of oil from the stationary to mobile components. However, the axial transfer route suffers from large leakage gap issue. Another design concept proposes commercial contact seals, which suffers from low life span issue. Another design concept proposes labyrinth seals, which suffers from issue of non-availability of airflow to seal oil.

It would be desirable to have an improved design for low maintenance stationary to mobile components lube transfer systems for wind turbine gearboxes.

BRIEF DESCRIPTION OF THE DRAWINGS

 

Figure 1 depicts a lube transfer system for a wind turbine gearbox, designed and implemented in accordance with the principles of the present invention.

 

DETAILED DESCRIPTION

 

The present invention could generally apply to lubrication systems for wind turbine gearboxes with stationary and mobile components. The present invention could particularly apply to design and construction of low maintenance stationary to mobile components lube transfer system for wind turbine gearboxes.

The present invention proposes a new design for stationary to mobile components lube transfer system for a wind turbine gearbox. Specifically, the present invention discloses design and construction of a lube oil transfer system for transfer of the lube oil from a stationary wind turbine gearbox housing to mobile planet carriers to lubricate planet bearings and spline coupling. The key advantages of the new design comprise zero or negligible oil leakage, no maintenance for at least twenty years, no pressurized air flow for sealing, and easy accommodation into limited space.

Figure 1 Lube transfer system for a wind turbine gearbox

As shown in Figure 1, the lube system 100 comprises a stationary gearbox housing 102, a first stage carrier 104, a first stage sun pinion 106, a second stage carrier 108, a first precision ring set 110, a second precision ring set 112, an oil feed input 114, one or more oil-to-lube first stage planet bearings 116, one or more oil-to-lube second stage planet bearings 118, an oil-to...