CN202364039U

CN202364039U - Ceramic-ball three-bearing structure for 5MW double-fed wind turbine generator

Info

Publication number: CN202364039U
Application number: CN2011204898203U
Authority: CN
Inventors: 滕强; 王卫国; 梁君声; 孙磊道; 王建国; 陈福海; 韩飞; 温菁菁; 滕雅娴; 张欣; 于洋; 崔海龙
Original assignee: DALIAN TIANYUAN ELECTRICAL MACHINERY Co Ltd
Current assignee: DALIAN TIANYUAN ELECTRICAL MACHINERY Co Ltd
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2012-08-01
Anticipated expiration: 2021-12-01

Abstract

The utility model discloses a ceramic-ball three-bearing structure for a 5MW double-fed wind turbine generator. Three sets of bearings are arranged on a motor shaft, wherein a set of cylindrical roller bearing and a set of deep-groove ball bearing are sequentially assembled at the driving end of the motor shaft; and a set of cylindrical roller bearing is assembled at the non-driving end of the motor shaft. The utility model has the characteristics that the three sets of bearings in the three-bearing structure performs respective functions to satisfy requirements on the dynamic load, the static load and the fatigue load of the bearings of the generator, rolling bodies are made of a ceramic ball insulating material, and the bearings are effectively protected against damage caused by induced high-frequency impulse shaft voltage and current during running of the generator, so that the problems of a high-power double-fed wind turbine generator over the years, such as high temperature of the bearings, high probability of damage of the bearing rolling bodies, shaft braking of a motor and the like, are solved.

Description

5MW double-fed wind power generator Ceramic Balls three bearing arrangements

Technical field

The utility model relates to the generator shaft bearing structure, is specifically related to a kind of 5MW double-fed wind power generator Ceramic Balls three bearing arrangements.

Background technology

There are high, the problems such as bearing roller is fragile, motor seize of bearing temperature in high-power for many years double-fed wind power generator always; And the 5MW double-fed wind power generator since from great, distance between axles is long, rotating speed is high, three traditional bearing arrangements can't satisfy the needs that it moves reliably and with long-term.

The utility model content

The purpose of the utility model is to overcome above-mentioned not enough problem, and a kind of 5MW double-fed wind power generator Ceramic Balls three bearing arrangements are provided.

The utility model for realizing the technical scheme that above-mentioned purpose adopted is: a kind of 5MW double-fed wind power generator Ceramic Balls three bearing arrangements; Adopt three cover bearing arrangements on the motor shaft; Wherein the driving end of motor shaft is equipped with a cover cylinder roller bearing and a cover deep groove ball bearing successively; Non-transmision end is equipped with a cover cylinder roller bearing; Two cover bearings of said driving end are positioned at the driving end end cap; And block through internal bearing cover, bearing end cover its outer ring, is separately installed with bearing inner seal ring, bearing outer seal ring between said internal bearing cover, bearing end cover and the pairing bearing, and a cover bearing of said non-transmision end is positioned at the non-transmision end end cap; And block through internal bearing cover, bearing end cover its outer ring, is separately installed with bearing inner seal ring, bearing outer seal ring between the cylinder roller bearing of said internal bearing cover, bearing end cover and non-transmision end.

The internal bearing cover of the driving end of said motor shaft is positioned at cylinder roller bearing one end, and bearing end cover is positioned at deep groove ball bearing one end.

The rolling element of said cylinder roller bearing and deep groove ball bearing all adopts Ceramic Balls insulation material.

The characteristics of the utility model are: the cover of three in three bearing arrangements bearing plays effect separately respectively; Can satisfy the requirement of generator to bearing dynamic load, static load, fatigue loading; Rolling element adopts Ceramic Balls insulation material; High-frequency impulse shaft voltage that also can effectively prevent to respond in the generator operation process and electric current be to the damage of bearing, thereby solve high, the problems such as bearing roller is fragile, motor seize of bearing temperature that high-power for many years double-fed wind power generator exists always.

Description of drawings

Fig. 1 is the utility model structural representation.

Wherein: 1, bearing outer seal ring 2, bearing end cover 3, deep groove ball bearing 4, driving end end cap 5, cylinder roller bearing 6, bearing inner seal ring 7, internal bearing cover 8, internal bearing cover 9, bearing inner seal ring 10, cylinder roller bearing 11, non-transmision end end cap 12, bearing end cover 13, bearing outer seal ring 14, motor shaft.

Embodiment

As shown in Figure 1; The utility model is on the motor shaft 14 of 5MW double-fed wind power generator, to adopt three cover bearing arrangements; Wherein the driving end of motor shaft 14 is equipped with a cover cylinder roller bearing 5 and a cover deep groove ball bearing 3 successively; Non-transmision end is equipped with a cover cylinder roller bearing 10; The cylinder roller bearing 5 and the deep groove ball bearing 3 of said driving end all are positioned at driving end end cap 4, and block through internal bearing cover 7, bearing end cover 2 cylinder roller bearing 5 of said driving end and the outer ring of deep groove ball bearing 3, and wherein internal bearing cover 7 is positioned at cylinder roller bearing 5 one ends; And bearing inner seal ring 6 is installed between the two; Bearing end cover 2 is positioned at deep groove ball bearing 3 one ends, and bearing outer seal ring 1 is installed between the two, and the cylinder roller bearing 10 of said non-transmision end is positioned at non-transmision end end cap 11; Block through internal bearing cover 8, bearing end cover 12 outer ring of the cylinder roller bearing 10 of said non-transmision end; And be separately installed with bearing inner seal ring 9, bearing outer seal ring 13, three cover bearings between the cylinder roller bearing 10 of internal bearing cover 8, bearing end cover 12 and non-transmision end and bring into play effect separately respectively, satisfy the requirement of generator to bearing dynamic load, static load, fatigue loading: what the driving end of motor shaft 14 and non-transmision end respectively were equipped with one overlaps cylinder roller bearing 5,10; Be used to bear the radial load that motor itself and unit gearbox bring, and the cover deep groove ball bearing that driving end is equipped with is used to bear self electromagnetic force and tilts and the axial force of generation with unit; The rolling element of three cover bearings all adopts Ceramic Balls insulation material, and high-frequency impulse shaft voltage that can effectively prevent to respond in the generator operation process and electric current are to the damage of bearing.

The above; Be merely the preferable embodiment of the utility model; But the protection range of the utility model is not limited thereto; Any technical staff who is familiar with the present technique field is equal to replacement or changes according to the technical scheme of the utility model and inventive concept thereof in the technical scope that the present invention discloses, and all should be encompassed within the protection range of the utility model.

Claims

1. 5MW double-fed wind power generator Ceramic Balls three bearing arrangements; It is characterized in that: motor shaft (14) is gone up and is adopted three cover bearing arrangements; Wherein the driving end of motor shaft (14) is equipped with a cover cylinder roller bearing (5) and a cover deep groove ball bearing (3) successively; Non-transmision end is equipped with a cover cylinder roller bearing (10); Two cover bearings of said driving end are positioned at driving end end cap (4); And block through internal bearing cover (7), bearing end cover (2) its outer ring, is separately installed with bearing inner seal ring (6), bearing outer seal ring (1) between said internal bearing cover (7), bearing end cover (2) and the pairing bearing, and a cover bearing of said non-transmision end is positioned at non-transmision end end cap (11); And block through internal bearing cover (8), bearing end cover (12) its outer ring, is separately installed with bearing inner seal ring (9), bearing outer seal ring (13) between the cylinder roller bearing (10) of said internal bearing cover (8), bearing end cover (12) and non-transmision end.

2. 5MW double-fed wind power generator Ceramic Balls three bearing arrangements as claimed in claim 1; It is characterized in that: the internal bearing cover (7) of the driving end of said motor shaft (14) is positioned at cylinder roller bearing (5) one ends, and bearing end cover (2) is positioned at deep groove ball bearing (3) one ends.

3. 5MW double-fed wind power generator Ceramic Balls three bearing arrangements as claimed in claim 1 is characterized in that: the rolling element of said cylinder roller bearing (5), (10) and deep groove ball bearing (3) all adopts Ceramic Balls insulation material.