CN210106543U

CN210106543U - Oil seal structure of gearbox of wind driven generator

Info

Publication number: CN210106543U
Application number: CN201921043900.9U
Authority: CN
Inventors: 许学忠; 黄冬成; 边玉昌
Original assignee: Harbin Dingzhi Blue Technology Co Ltd
Current assignee: Harbin Dingzhi Blue Technology Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-02-21
Anticipated expiration: 2029-07-05

Abstract

The utility model provides an oil blanket structure of aerogenerator speed increaser gear box, belong to aerogenerator oil blanket technical field, the utility model discloses a gear box, the outer loop main part, polymer floating seal ring and axis of rotation, the outer loop main part is installed on the gear box, it has the pipeline to process in the outer loop main part, the pipeline is used for exhausting the gap that produces between outer loop main part and the axis of rotation, be provided with polymer floating seal ring between outer loop main part and the axis of rotation, the spring is still installed to polymer floating seal ring's below, polymer floating seal ring and spring are with arranging in the outer loop main part in, the below that is located in the outer loop. The utility model discloses can guarantee that the axis of rotation does not wear and tear when long-term the use, avoid seal clearance's increase effectively, the utility model has the advantages of simple structure, low maintenance cost and sealed effect are better.

Description

Oil seal structure of gearbox of wind driven generator

Technical Field

The utility model relates to a aerogenerator oil blanket technical field especially relates to an oil blanket structure of aerogenerator speed increaser gear box.

Background

With the national emphasis on environmental protection, the market of clean energy is rapidly developed, and compared with other energy sources, wind power generation has the characteristics of cleanness, environmental protection and the like. The localization of wind generating sets in China just starts, and the quality of a plurality of matching parts has a great gap compared with foreign products. The wind driven generator gearbox oil seal is an important component on a wind driven generator and has the function of sealing lubricating oil leakage at the bearing of the wind driven generator gearbox. The sealing effect directly determines the safety, the economical efficiency and the daily maintenance workload of the operation of the wind generating set. And the leakage of lubricating oil of the variable speed system of the wind generating set is a ubiquitous quality problem. Compared with a thermal generator set, the wind generator set is inconvenient to maintain, high in maintenance cost and difficult in hidden trouble elimination due to the installation position of the wind generator set. And the leakage of the lubricating oil is a fatal hidden danger of the wind generating set. Once the cable is ignited, a fire disaster is easily caused, and the normal operation and the life of the unit are seriously threatened. The traditional oil seal structure of the gearbox of the wind driven generator utilizes felt seal or labyrinth seal. However, in practical application, along with the continuous operation of the wind driven generator, the sealing gap between the felt seal or the labyrinth seal and the rotating shaft is continuously increased, the leakage of lubricating oil is also continuously increased, the sealing effect is increasingly poor, and the safe operation and the civilized production of the wind driven generator are seriously influenced.

Therefore, the sealing project of the transmission system of the wind generating set is researched, a novel long-term effective sealing component is developed, and the sealing component has extremely important practical value.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned technical problem, and then provide an oil blanket structure of aerogenerator speed increaser gear box.

The utility model adopts the technical scheme that:

the utility model provides an oil blanket structure of aerogenerator speed increaser gear box, includes gear box, outer loop main part, polymer floating seal ring and axis of rotation, and the outer loop main part is installed on the gear box, and it has the pipeline to process in the outer loop main part, and the pipeline is used for exhausting the gap that produces between outer loop main part and the axis of rotation, is provided with polymer floating seal ring between outer loop main part and the axis of rotation, and polymer floating seal ring arranges in the outer loop main part.

Furthermore, the polymer floating sealing ring is of a circular ring type consisting of a plurality of arc sections, positioning pin holes are processed on the arc sections, positioning pins penetrate through the positioning pin holes to fixedly install the polymer floating sealing ring on the outer ring main body, and springs are arranged between the arc sections and the outer ring main body.

Further, an oil return hole is processed on the outer ring main body and communicated with a gap formed by the outer ring main body and the rotating shaft.

Further, fixed mounting has the honeycomb area on the outer loop main part, and the honeycomb area is regular hexagon honeycomb area.

Furthermore, an O-shaped sealing ring is arranged on the rotating shaft.

The utility model discloses following beneficial effect has to prior art: the pipeline is processed on the outer ring main body, and the outer ring main body is inflated to form air pressure difference with the outside lubricating oil in the outer ring main body, so that the sealing effect of the first layer is achieved; the macromolecular floating seal ring is arranged between the outer ring main body and the rotating shaft, so that most of lubricating oil is blocked outside, and the spring is arranged between the macromolecular floating seal ring and the outer ring main body, so that the spring force is provided for the macromolecular floating seal ring to enable the macromolecular floating seal ring to be in close contact with the rotating shaft, and the gapless sealing effect is achieved; and sealing belts are respectively arranged on the outer ring main body and the rotating shaft, so that even a small amount of oil enters the inside, the oil returns to the inside of the gear box through an oil return hole arranged on the outer ring main body. The utility model discloses can guarantee that the axis of rotation does not wear and tear when long-term the use, avoid seal clearance's increase effectively, the utility model has the advantages of simple structure, low maintenance cost and sealed effect are better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of a polymer floating seal ring

FIG. 3 is a schematic diagram of a honeycomb ribbon;

FIG. 1-gearbox housing; 2-an outer ring body; 3-oil return hole; 4-a spring; 5-a macromolecular floating seal ring; 6-positioning pins; 7-honeycomb band; 8-a rotating shaft; 9-O type sealing ring; 10-a pipeline; 11-arc segment; 12-dowel hole.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The description is made with reference to the accompanying drawings 1 to 3: an oil seal structure of a gearbox of a wind driven generator speed increaser comprises a gearbox body 1, an outer ring main body 2, a high polymer floating seal ring 5 and a rotating shaft 8, wherein the outer ring main body 2 is installed on the gearbox body 1, a honeycomb belt 7 is welded and installed on the outer ring main body 2, the honeycomb belt 7 is a regular hexagon honeycomb belt, the preferred honeycomb belt 7 is made of a nickel alloy material in a sealing mode, the damping effect on lubricating oil can be effectively improved through the installed honeycomb belt 7, the hardness of the selected material is low, and the abrasion state of the rotating shaft is reduced; the rotating shaft 8 is provided with an O-shaped sealing ring 9, so that even if the oil quantity of lubricating oil passing through the gearbox of the speed increaser is large, two sealing devices are arranged to play a great role in sealing the gearbox; further optimization; the outer ring main body 2 is provided with a pipeline 10, the pipeline 10 is used for exhausting a gap generated between the outer ring main body 2 and the rotating shaft 8, the pipeline 10 is arranged on the outer ring main body 2, one end of the pipeline 10 is connected with an external air pump, the other end of the pipeline 10 is communicated with a gap formed by the outer ring main body 2 and the rotating shaft 8, so that the pipeline can complete air blowing action on the gap under the action of the air pump, and the gap formed between the outer ring main body 2 and the rotating shaft 8 and the outside form an air pressure difference, so that the entering of lubricating oil can be effectively blocked; furthermore, a high polymer floating seal ring 5 is arranged between the outer ring main body 2 and the rotating shaft 8, the high polymer floating seal ring 5 is arranged in the outer ring main body 2, the high polymer floating seal ring 5 is of a ring shape consisting of a plurality of arc sections 11, positioning pin holes 12 are processed on the arc sections 11, positioning pins 6 penetrate through the positioning pin holes 12 to fixedly install the high polymer floating seal ring 5 on the outer ring main body 2, and springs 4 are arranged between the arc sections 11 and the outer ring main body 2; according to the arrangement, the groove is processed in the outer ring main body 2, the high polymer floating seal ring 5 is fixedly arranged in the groove of the outer ring main body 2 through the positioning pin 6, the spring 4 is further arranged below the high polymer floating seal ring 5, and under the action force of the spring 4, the high polymer floating seal ring 5 has elasticity and is in close contact with the rotating shaft 8, so that the zero clearance sealing effect is achieved, and under the action force of the spring 4, the high polymer floating seal ring 5 can also adapt to the vibration generated when the rotating shaft rotates, the abrasion caused by long-term use is reduced, the increase of the sealing gap between the outer ring main body 2 and the rotating shaft 8 is avoided, so that the leakage problem of lubricating grease is further effectively prevented, and the good sealing purpose is achieved; furthermore, an oil return hole 3 is formed in the outer ring main body 2, and the oil return hole 3 is communicated with a gap formed by the outer ring main body 2 and the rotating shaft 8; when a small amount of lubricating oil enters the gap between the outer ring main body 2 and the rotating shaft 8, the oil return hole 3 is arranged to be communicated with the gap, so that the lubricating oil can return to the interior of the gear box from the oil return hole 3 and cannot leak out of the oil retainer.

The utility model discloses a sealed principle is realized through following several aspects: firstly, a pipeline 10 is processed on the outer ring main body 2, and the pipeline is used for completing the inflation action of a gap formed between the outer ring main body 2 and the rotating shaft 8 under the action of an external air pump, so that the first sealing action is realized; secondly, due to the regular hexagon structure of the honeycomb belt 7, the damping effect on oil can be effectively increased, and the O-shaped sealing ring 9 arranged on the rotating shaft 8 can block most of oil when lubricating oil passes through the two sealing devices arranged in the second way; then, because the gearbox of the speed increaser has a large amount of lubricating oil, a small amount of lubricating oil is sealed by the second honeycomb belt 7 and the O-shaped sealing ring 9 and is blocked by the macromolecular floating sealing ring 5, the lubricating oil returns to the inside of the gearbox through the oil return hole 3 below the outer ring main body 2, and the lubricating grease cannot leak out of the oil blocking ring; finally, the macromolecule floating sealing ring 5 is arranged between the outer ring main body and the rotating shaft, and the macromolecule floating sealing ring 5 has certain elasticity under the action of the spring 4, so that the macromolecule floating sealing ring 5 is in close contact with the rotating shaft 8, and a gapless sealing effect is achieved; therefore, the rotating shaft 8 can be ensured not to be worn in long-term use, and the sealing clearance is not increased, so that the purposes of effectively preventing lubricating grease from leaking and sealing can be achieved.

This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.

Claims

1. The utility model provides an oil blanket structure of aerogenerator speed increaser gear box, its characterized in that, includes gear box (1), outer loop main part (2), polymer floating seal ring (5) and axis of rotation (8), install outer loop main part (2) on gear box (1), processing has pipeline (10) on outer loop main part (2), pipeline (10) are used for right outer loop main part (2) with the gap that forms between axis of rotation (8) exhausts, outer loop main part (2) with be provided with between axis of rotation (8) polymer floating seal ring (5), polymer floating seal ring (5) are arranged in outer loop main part (2).

2. The oil seal structure of the gearbox of the speed increaser of the wind driven generator according to claim 1, wherein the polymeric floating seal ring (5) is a circular ring type consisting of a plurality of arc sections (11), positioning pin holes (12) are formed in the arc sections (11), positioning pins (6) penetrate through the positioning pin holes (12) to fixedly mount the polymeric floating seal ring (5) on the outer ring main body (2), and springs (4) are arranged between the arc sections (11) and the outer ring main body (2).

3. The oil seal structure of the gearbox of the speed increaser of the wind driven generator according to claim 2, wherein an oil return hole (3) is formed in the outer ring main body (2), and the oil return hole (3) is communicated with a gap formed by the outer ring main body (2) and the rotating shaft (8).

4. The oil seal structure of the gearbox of the speed increaser of the wind driven generator according to claim 1, wherein a honeycomb belt (7) is fixedly arranged on the outer ring main body (2), and the honeycomb belt (7) is a regular hexagon honeycomb belt.

5. The oil seal structure of the gearbox of the speed increaser of the wind driven generator according to claim 4, wherein an O-shaped sealing ring (9) is arranged on the rotating shaft (8).