CN103104617A

CN103104617A - Main bearing sealing system for wind generating set

Info

Publication number: CN103104617A
Application number: CN2013100195132A
Authority: CN
Inventors: 黄勇
Original assignee: SUZHOU TITPWE WIND ENERGY TECHNOLOGY Co Ltd
Current assignee: SUZHOU TITPWE WIND ENERGY TECHNOLOGY Co Ltd
Priority date: 2013-03-04
Filing date: 2013-03-04
Publication date: 2013-05-15

Abstract

The invention provides a main bearing sealing system for a wind generating set. The main bearing sealing system comprises front and rear positioning rings of a bearing, front and rear sealing covers, a sealing and spacing piece, a framework oil seal, a V-shaped wiper scraper seal, an O-shaped ring, and a bearing end cover. The V-shaped wiper scraper seal is arranged on an atmosphere side, and the framework oil seal is arranged on a grease side. Both the V-shaped wiper scraper seal and the framework oil seal are provided with sealing lips which can freely slide on the surface of a shaft.

Description

A kind of main shaft seals system for wind power generating set

Technical field

The present invention relates to technical field of wind power generation, particularly, relate to a kind of main shaft seals system of wind power generating set.

Background technique

The double feed wind power generator group is present most popular type.Its working principle is that impeller rotates under the effect of wind energy, thereby drive main shaft, energy is passed to gear-box, passes to generator by gear-box at last, by generator output electric energy.In this process, main bearing is subject to the axial and Radial Loads from impeller, and can it work safely and effectively, most important to blower fan. and main bearing is carried out excellent sealing, guarantee that it obtains good lubrication, just seem extremely important.

At present, wind driven generation set main shaft holds sealing and mainly contains the forms such as V-type dust ring, outside framework oil seal, labyrinth sealing. these Sealings all with bearing before and after positioning ring directly contact and rotate around it, by and positioning ring between the formation oil film reach the effect of sealing.In this process, before and after V-type dust ring, outside framework oil seal and bearing, inevitably there is friction in positioning ring, and is for years, can make before and after bearing the contact position place on positioning ring produce scratch, and grease can let out by these scratches place.In a single day scratch produces, and before and after reparation or replacing bearing, the positioning ring possibility is all very little, and this just causes lubricant grease to waste in a large number, and bearing can not get good lubricating, and even burns out a bearing, and causes stopping accident.

Summary of the invention

For the problems referred to above, the purpose of this invention is to provide the main bearing sealing device of the wind power generating set of a kind of good seal performance, life cycle length.

To achieve these goals, the technology used in the present invention solution is; A kind of main shaft seals system of wind power generating set comprises positioning ring before and after bearing, front and back sealing cover, sealing spacing piece, outside framework oil seal, V-type dust ring, O type circle, bearing (ball) cover etc.

The invention has the beneficial effects as follows:

The design of this sealing system is ingenious, simple in structure. only need the mutual alignment relation by hydrodynamic reciprocating sealing spacing piece, V-type dust ring, outside framework oil seal, just can eliminate the scratch that the friction of oil sealing and positioning ring produces, avoid lubricating grease to leak from scratch, guarantee the main bearing safe and efficient work.

Description of drawings

Figure 1 shows that a kind of main shaft seals system architecture schematic diagram of wind power generating set;

Fig. 2 is the spindle seal system structural representation after first is sealed spacing piece and moves past outward;

Fig. 3 is the spindle seal system structural representation after second sealing spacing piece moved past outward.

Embodiment

Mark shown in Figure 1 is as follows: main shaft 1, bearing prelocalization ring 2, outside framework oil seal 3, V-type dust ring 4, sealing spacing piece 5, front end cover 6, bearing front cover 7, bearing support 8, main bearing 9, O type circle 10.

The main bearing new type sealing device of a kind of wind power generating set shown in Figure 1 comprises positioning ring before and after bearing, front and back sealing cover, sealing spacing piece, outside framework oil seal, V-type dust ring, O type circle, front and back bearings end cap etc.

Fig. 1 when putting into operation for the first time, the structural relation of each element of sealing system.Contact position before and after V-type dust ring, outside framework oil seal and bearing being detected between positioning ring, when the indenture that produces due to scraping surpasses permitted value, in the outer part a slice spacing piece is shifted out, is adjusted to position relationship shown in Figure 2.Like this, indenture just is in outside V-type dust ring, outside framework oil seal operating range, and lubricant grease just can not leak outside.In working procedure after this, when the contact position indenture again being detected and exceed permitted value.Repeat above-mentioned action, residue a slice sealing spacing piece is adjusted to position shown in Figure 3.So operate, can reach the working life of lower 3 times of the condition of not using this sealing spacing piece.

Claims

1. a main shaft seals system that is used for wind-driven generator, is characterized in that, the sealing system comprises positioning ring before and after bearing, front and back sealing cover, sealing spacing piece, outside framework oil seal, V-type dust ring, O type circle, front and back bearings end cap etc.

2. the main shaft seals system of wind-driven generator according to claim 1, is characterized in that, between outside framework oil seal and bearing (ball) cover, configured two sealing spacing pieces.

3. the main shaft seals system of wind-driven generator according to claim 1, is characterized in that, described bearing front cover and bearing rear end cover are arranged on bearing support by bolt.

4. fix with bolt between described sealing protecgulum and bearing front cover, rear sealing cover and bearing rear end cover.

5. the main shaft seals system of wind-driven generator according to claim 2, described sealing spacing piece is a thin slice annulus.

6. the main shaft seals system of wind-driven generator according to claim 3, is characterized in that, the annulus that described sealing protecgulum and rear sealing cover become by two semicircular ring thin slices.