Bearing protection arrangement

A technology for arranging structures and bearings, applied to engine control parameters, engine functions, engines, etc., can solve the problems of increasing the total cost of wind turbines, expensive, battery system loss of capacity, etc., to avoid the need for large and expensive high-capacity batteries Effect

Active Publication Date: 2020-06-12
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the cost of batteries increases with size, making a large backup battery with the capacity necessary to outlast such long standstills a very expensive component, adding to the overall cost of the wind turbine
[0013] Additionally, battery systems can lose capacity over time, for example, if batteries are not properly maintained to complete charge / discharge cycles properly

Method used

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Embodiment Construction

[0041] figure 1 An embodiment of an inventive wind turbine 2 is shown. Here, the wind turbine 2 is a geared wind turbine using one or more journal bearings, but it is understood that the bearing protection arrangement is equally applicable to journal bearings of direct drive wind turbines. Relevant components of the wind turbine 2 are the low speed rotor shaft 20 , the rotor shaft housing 21 and journal bearings (not visible in the figures) arranged between the housing 21 and the rotor shaft 20 . In this embodiment the auxiliary component is a braking system 23 arranged to engage or lock the low speed shaft 20 during low wind speed conditions. An embodiment of an inventive bearing protection arrangement is indicated by a wind monitor 10 and a mode switching module 11 . The other components are: a gearbox, which links the low speed shaft 20 to a high speed shaft to drive the generator 26; and a wind turbine controller 27, which controls the various components as required.

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Abstract

The invention describes a bearing protection arrangement (10, 1) of a journal bearing (22L, 22F) arranged between a housing (21) and a rotary component (20) of a wind turbine (2), which bearing protection arrangement (10, 11) comprises a wind speed monitor (10) arranged to monitor wind speed (S) in the vicinity of the wind turbine (2) and to generate a wake-up signal (W) when the wind speed (S) exceeds a predefined minimum (Smin); a mode switch module (11) of a backup battery (24) arranged to provide restart power to an auxiliary (23) of the wind turbine (2), which mode switch module (11) is adapted to switch the backup battery (24) from a normal-power mode (M1) into a low-power mode (M0) to conserve sufficient restart power after low wind-speed conditions, and to switch the backup battery(24) from the low-power mode (M0) into a normal-power mode (M1) in response to the wake-up signal (W). The invention further describes a wind turbine (2); and a method of protecting a journal bearing(22L, 22F) of a wind turbine (2) during standstill.

Description

technical field [0001] The invention describes a protection arrangement for journal bearings. The invention also describes a wind turbine and a method of protecting a journal bearing of a wind turbine during standstill. Background technique [0002] In some types of wind turbines, the aerodynamic rotor of the wind turbine may be connected to a drive train journal or shaft that extends through a housing that is in turn mounted to the base frame of the wind turbine. The aerodynamic rotor of a wind turbine turns relatively slowly. Due to their advantages in durability and high load handling, and because they are equally suitable for use in slow rotating applications as well as fast rotating applications, journal bearings (also known as plain bearings or fluid bearings) are used in transmission any part of the system. In a gearbox turbine, the gearbox increases the rotational speed of the low speed rotor shaft to a higher speed for the generator, and journal bearings may be u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02F03D80/70F03D17/00
CPCF03D7/026F05B2240/53F05B2260/845F05B2270/32F03D80/70F03D17/00Y02E10/72F03D9/25F03D7/0204F03D7/0224F05B2270/321F05B2270/329F05B2270/335
Inventor S.H.霍金斯
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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