Main shaft bearing end cover aligning tool of wind turbine generator system and end cover adjusting method thereof

Abstract

The invention discloses a main shaft bearing end cover aligning tool of a wind turbine generator system and an end cover adjusting method thereof. The aligning tool is of an irregular round table structure; one side of the round table structure is a flat section parallel to the axis of the round table; the flat section is vertically cut from one end surface of the round table to the other end surface; and the other side of the round table structure is still an arc surface with a taper. The aligning tool can effectively solve the oil leakage problem of a main shaft bearing seal of a double-feedback wind turbine generator system with a double-support structure in the prior art.

Description

technical field [0001] The invention relates to the technical field of oil leakage from main shaft bearing seals, in particular to a centering tool for an end cover of a main shaft bearing of a wind turbine and a method for adjusting the end cover. Background technique [0002] As is known in the industry, the double-fed wind turbine with a large megawatt double-support structure has two main shaft bearings on the main shaft of the transmission chain. The plate is installed on the main shaft together, and its structure consists of a sealing ring, an end cover, an oil seal cover plate, a bearing seat, and a main shaft. The sealing ring is installed in the end cover (positioned by the end cover), and the sealing lip radially clamps the outer surface of the main shaft; the oil seal cover plate axially presses the sealing ring and is fixed on the end cover; the end cover is finally fixed on the bearing seat . The ring-shaped sealing ring mainly adopts the cloth sealing ring, a...

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Problems solved by technology

[0003] During the operation of the wind turbine, factors such as inclination angle, vibration, bearing clearance, quality defect of the sealing ring (small interference), component deviation, etc., cause the oil leakage problem of the main shaft bearing seal to be common in the double-fed wind turbine with double support structure at present. Oil leakage will cause the bearing to overheat due to lack of oil, wear the bearing, and seriously cause the bearing to fail, causing inconvenience to the operation and maintenance of the fan and even major economic losses

[0004] At present, the main reasons for the oil leakage of the main shaft bearing seal in the doubly-fed wind turbine with double support structure are: 1. The design defect of the sealing ring; 2. The vibration during the operation of the unit; 3. The design tolerance of the end cover parts is unreasonable , large parts processing error, large cumulative error of parts installation deviation and other factors, resulting in gaps in the seal and oil leakage from the spindle bearing seal

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