CN215634465U

CN215634465U - Novel bearing lubricating system for wind driven generator

Info

Publication number: CN215634465U
Application number: CN202121277843.8U
Authority: CN
Inventors: 刘标; 高飞; 吴士华; 吴潮; 杨瑜; 陈雪珊
Original assignee: Beijing Guodian Sida Technology Co ltd
Current assignee: Beijing Guodian Sida Technology Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-01-25
Anticipated expiration: 2031-06-08

Abstract

The utility model provides a novel bearing lubricating system for a wind driven generator, which comprises: a rotating shaft; a pressure retention chamber; the grease discharging room is communicated with the pressure maintaining chamber; the storage box is communicated with the grease discharging room; and the oil slinger is sleeved on the rotating shaft, and the end face of the oil slinger is provided with a grease scraping sheet which is positioned in the grease discharging room. The utility model aims to provide a novel system for lubricating a bearing of a wind driven generator, which well solves the problem that the heat dissipation speed of the bearing is influenced because waste grease is accumulated in a bearing end cover of the wind driven generator in the prior art and cannot be normally discharged.

Description

Novel bearing lubricating system for wind driven generator

Technical Field

The utility model relates to the technical field of bearing lubrication, in particular to a novel bearing lubrication system of a wind driven generator.

Background

With the development of the wind power industry, the technology of wind driven generators is mature day by day, wind power generation is to convert the kinetic energy of wind into mechanical energy and then convert the mechanical energy into electric kinetic energy, and generators are devices for directly converting energy.

At present, the bearing fault rate is high aiming at the faults of the wind driven generator, and the faults of the bearing have great relation with the lubrication, the grease discharging channel, the heating and the like of the bearing; at present, two lubricating modes mainly exist, and the grease is added manually and automatically at regular intervals, but along with the long-time operation of a generator, obvious waste grease is not removed after the grease is added at regular intervals, and the waste grease is accumulated inside a bearing end cover, so that radiating fins in the bearing end cover are accumulated and filled with the waste grease, the waste grease cannot be discharged in time, and the problems of grease separation, partial grease leakage, influence on the heat dissipation temperature of a bearing and the like are solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel system for lubricating a bearing of a wind driven generator, and aims to solve the problem that waste grease is accumulated in a bearing end cover of the wind driven generator in the prior art, so that the waste grease cannot be discharged normally and the heat dissipation speed of the bearing is influenced.

The utility model provides a novel bearing lubricating system for a wind driven generator, which comprises: a rotating shaft; a pressure retention chamber; the grease discharging room is communicated with the pressure maintaining chamber; the storage box is communicated with the grease discharging room; and the oil slinger is sleeved on the rotating shaft, and the end face of the oil slinger is provided with a grease scraping sheet which is positioned in the grease discharging room.

Further, the system also comprises a bearing seat, a bearing outer end cover and a bearing inner end cover; the bearing outer end cover and the bearing inner end cover are respectively arranged on two sides of the bearing seat; and the bearing seat, the outer end cover of the bearing and the inner end cover of the bearing are fixedly connected through bolts.

Further, the system further comprises a bearing; the bearing sleeve is arranged on the rotating shaft and fixedly connected to the inner side of the bearing seat.

Furthermore, grease injection channels are formed in the bearing seat and the bearing outer end cover; the outlet of the grease injection channel is communicated with the bearing, and the bearing is communicated with the grease discharge chamber.

Further, the system also includes an oil slinger; the oil deflector ring is clamped between the bearing and the outer end cover of the bearing.

Further, the pressure-maintaining chamber is a chamber formed by the bearing, the oil slinger and the oil slinger.

Furthermore, a cavity formed by the oil slinger and the outer end cover of the bearing is arranged between the grease discharging chambers.

Further, the oil slinger and the oil slinger are both provided with inclined planes so as to enlarge the space of the pressure-holding chamber.

Further, the bearing seat, the outer end cover of the bearing and the inner end cover of the bearing are fixedly connected through bolts.

Further, the number of the grease scraping sheets is 2.

According to the technical scheme, waste oil is finally collected into the storage box through the pressure-holding chamber, the grease discharging chamber and the storage box which are communicated in sequence, so that the waste oil is discharged in time; in the process of discharging the grease into the storage box from the grease discharging room, the waste grease in the grease discharging room is scraped away by the grease scraping sheet, and the grease is discharged into the storage box by centrifugal force generated by the oil slinger along with the rotation of the rotating shaft; the problem of piling up waste grease in the aerogenerator bearing end cover among the prior art and leading to waste grease can not normally discharge, influence bearing radiating rate is solved well.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front cross-sectional view of a novel system for lubricating a bearing of a wind turbine provided in an embodiment of the present invention;

FIG. 2 is a side cross-sectional view of a novel system for lubricating a bearing of a wind turbine provided in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an oil slinger according to an embodiment of the present invention;

FIG. 4 is a side view of an oil slinger provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an outer end cover of a bearing according to an embodiment of the present invention.

Description of reference numerals:

1 is a rotating shaft; 2 is a pressure-maintaining chamber; 3 is a grease discharging chamber; 4 is a storage box; 5 is an oil slinger, 51 is a grease scraping sheet, and 52 is an inclined plane;

61 is a bearing seat, 62 is an outer end cover of the bearing, 63 is an inner end cover of the bearing, 64 is a bolt, 65 is the bearing, and 66 is a grease injection channel;

and 7 is an oil scraper ring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a novel system for lubricating a bearing of a wind turbine, comprising: a rotating shaft 1 and a pressure maintaining chamber 2; a grease discharging chamber 3 communicated with the pressure maintaining chamber 2; and a storage box 4 communicated with the grease discharging room 3.

Through pressurize room 2 that connects gradually, 3 and receiver 4 between the grease discharging, the abandonment grease after lubricating the bearing loops through

pressurize room

2, 3 finally collect between the grease discharging in the receiver 4, realized that the waste grease in time discharges, avoid generator bearing grease to block up and lead to greasing not smooth, lubricated bad, the grease separation, base oil seepage scheduling problem has promoted generator bearing life, the major accident that has prevented the generator and has leaded to because of bearing 65 takes place.

Referring to fig. 3-4, in order to achieve a better waste oil discharging effect, the oil slinger 5 is improved, the oil slinger 5 is sleeved on the rotating shaft 1 and is used for driving the rotating shaft 1 to rotate the oil slinger 5, the end face of the oil slinger 5 is provided with a grease scraping sheet 51, the grease scraping sheet 51 is located in the grease discharging room 3, after waste grease flows into the grease discharging room 3 from the pressure maintaining chamber 2, the rotating shaft 1 drives the oil slinger 5 to rotate, the grease scraping sheet 51 on the oil slinger 5 scrapes the waste grease, and the waste grease is thrown out to the storage box 4 through centrifugal force generated by high-speed rotation of the oil slinger 5, so that the grease is automatically discharged.

It should be noted that the number of the grease scraping sheets 51 is any number as long as the grease scraping sheets 51 can be ensured to scrape waste grease in grease discharge, and preferably, the number of the grease scraping sheets 51 is 2.

Referring to fig. 5, the system further includes a bearing seat 61, a bearing outer end cap 62, and a bearing inner end cap 63; the bearing outer end cover 62 and the bearing inner end cover 63 are respectively arranged on two sides of the bearing seat 61; the bearing seat 61, the bearing outer end cover 62 and the bearing inner end cover 63 are fixedly connected through bolts 64.

The system further comprises a bearing 65; bearing 65 cover is established on the pivot 1 and the rigid coupling is in the inboard of bearing frame 61, bearing frame 61 is in order to be used for fixed bearing 65.

Referring to fig. 2, grease injection channels 66 are formed in the bearing seat 61 and the bearing inner end cover 63; the outlet of the grease injection channel 66 is communicated with the bearing 65, and the bearing 65 is communicated with the grease discharging room 3; when oil needs to be injected into the bearing 65, oil is injected into the inlet of the grease injection channel 66, grease enters the bearing 65 through the grease injection channel 66 of the bearing seat 61 and the bearing inner end cover 63, lubrication on the bearing 65 is realized, waste grease generated after lubrication of the bearing 65 flows into the pressure-maintaining chamber 2, and the waste grease cannot be accumulated in the bearing end cover; as more and more waste grease accumulates in the holding pressure chamber 2, the waste grease enters the grease discharge chamber 3 from the holding pressure chamber 2.

It is noted that fig. 1 and 2 are sectional views, and fig. 2 is an oblique sectional view for showing the position of the grease filling passage 66.

The system further comprises an oil slinger 7; the oil deflector ring 7 is clamped between the bearing 65 and the bearing outer end cover 62; a chamber formed by the oil slinger 7, the bearing 65 and the oil slinger 5 is a pressure maintaining chamber 2; in order to enlarge the space of the pressure-holding chamber 2, optimize the lubrication of the bearing 65 and increase the storage space of the waste grease, the oil slinger 7 and the oil slinger 5 are both provided with the inclined surface 52.

The grease discharging room 3 is a cavity formed by the oil slinger 5 and the bearing outer end cover 62.

The grease using process of the novel bearing lubricating system of the wind driven generator is as follows:

(1) grease enters the bearing 65 through the grease injection channel 66 of the bearing seat 61 and the bearing inner end cover 63 to lubricate the bearing 65, waste grease generated after the bearing 65 is lubricated flows into the pressure maintaining chamber 2, and when more and more waste grease is accumulated in the pressure maintaining chamber 2, the waste grease enters the grease discharging chamber 3 from the pressure maintaining chamber 2;

(2) the waste grease in the grease discharging room 3 is scraped by the grease scraping blade 51 on the oil slinger 5, and the waste grease is thrown out to the storage box 4 by the centrifugal force generated by the high-speed rotation of the oil slinger 5 to complete the collection.

Therefore, according to the technical scheme, the waste oil is finally collected into the storage box through the pressure-holding chamber, the grease discharging chamber and the storage box which are communicated in sequence, so that the waste oil is discharged in time; in the process of discharging the grease into the storage box from the grease discharging room, the waste grease in the grease discharging room is scraped away by the grease scraping sheet, and the grease is discharged into the storage box by centrifugal force generated by the oil slinger along with the rotation of the rotating shaft; the problem of piling up waste grease in the aerogenerator bearing end cover among the prior art and leading to waste grease can not normally discharge, influence bearing radiating rate is solved well.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel system for lubricating a bearing of a wind turbine generator is characterized by comprising:

a rotating shaft;

a pressure retention chamber;

the grease discharging room is communicated with the pressure maintaining chamber;

the storage box is communicated with the grease discharging room;

and the oil slinger is sleeved on the rotating shaft, and the end face of the oil slinger is provided with a grease scraping sheet which is positioned in the grease discharging room.

2. The novel system for lubrication of a bearing of a wind turbine as claimed in claim 1, wherein the system further comprises a bearing housing, an outer bearing end cap and an inner bearing end cap;

the bearing outer end cover and the bearing inner end cover are respectively arranged on two sides of the bearing seat;

and the bearing seat, the outer end cover of the bearing and the inner end cover of the bearing are fixedly connected.

3. The novel system for lubrication of wind turbine bearings of claim 2, further comprising a bearing;

the bearing sleeve is arranged on the rotating shaft and fixedly connected to the inner side of the bearing seat.

4. The novel bearing lubrication system for the wind driven generator as claimed in claim 3, wherein the bearing seat and the outer end cover of the bearing are both provided with grease injection channels;

the outlet of the grease injection channel is communicated with the bearing, and the bearing is communicated with the grease discharge chamber.

5. The novel system for lubrication of a bearing of a wind turbine as claimed in claim 3, wherein said system further comprises an oil slinger;

the oil deflector ring is clamped between the bearing and the outer end cover of the bearing.

6. The novel system for lubricating a bearing of a wind turbine generator as claimed in claim 5, wherein the pressure maintaining chamber is a chamber formed by the bearing, an oil slinger and an oil slinger.

7. The novel bearing lubrication system for the wind driven generator as claimed in claim 5, wherein the grease discharging chamber is a cavity formed by the oil slinger and an outer end cover of the bearing.

8. The novel system for lubricating a bearing of a wind turbine generator as claimed in claim 6, wherein the oil slinger and the oil slinger are both provided with inclined planes for enlarging the space of the pressure-maintaining chamber.

9. The novel bearing lubrication system for a wind turbine generator as claimed in claim 2, wherein the bearing seat, the outer end cap of the bearing and the inner end cap of the bearing are fixedly connected by bolts.

10. The novel system for lubricating a bearing of a wind turbine as claimed in claim 1, wherein the number of the scraping blades is 2.