CN205260837U - Seal structure of modified wind -powered electricity generation increaser fast axis - Google Patents

Abstract

The utility model discloses an improved sealing structure of a high-speed shaft of a wind power speed increaser. , and a plurality of O-rings arranged on the periphery of the sealing slip ring, and an oil thrower sealing device arranged on the front side of the sealing slip ring; and a packing arranged on the rear side of the sealing slip ring. The improved sealing structure of the high-speed shaft of the wind power speed increaser of the utility model can avoid the leakage of oil dirt when the high-speed shaft is operated by the sealing device of the oil thrower, and complete the rotating dynamic sealing function through the star ring and the sealing slip ring. , and ensure that the entire seal can have a good sealing effect under high-speed operation; through the O-ring and the hydraulic sealing device, the elastic compression deformation pre-tightening force is achieved, the installation is simple, and the sealing effect is good. Through the installation of the packing, the third Road seals, and can prevent external contaminants from entering high-speed shaft bearings.

Description

An improved sealing structure of the high-speed shaft of the wind power gearbox

technical field

The utility model relates to a wind power speed increaser assembly, in particular to an improved sealing structure of a high speed shaft of a wind power speed increaser, and belongs to the technical field of wind power speed increasers.

Background technique

In my country's power supply structure, thermal power generation accounts for 75%; as coal is a non-renewable energy source, with the rapid development of my country's industry, industrial development is facing the threat of increasing energy shortage; at the same time, thermal power generation brings a large amount of carbon dioxide emissions, Serious environmental pollution; hydroelectric power generation also faces the constraints of water shortage; and my country's wind energy resources are very rich, and the annual wind power generation capacity available for development and utilization can reach 4 trillion kW·h, which is equivalent to twice the current total annual power generation capacity in my country many. Since 1996, my country's wind power has been growing at a high rate with an average annual growth rate of 31%. However, by 2002, the wind power generation accounted for only 0.4% of my country's total power generation. The prospect of developing wind power energy is very broad; The composition of wind turbines remains high; it is not conducive to the further large-scale development of the wind power market; the localization of wind power technology is an important issue in the development of wind power in my country; The wind power drives the main shaft to move, the main shaft gives power to the wind power speed increaser, and the high speed shaft of the wind power speed up gear rotates at high speed. The sealing effect of the existing high speed shaft sealing structure of the wind power speed up gear is not good enough, which may easily cause lubricating oil leakage.

Utility model content

(1) Technical problems to be solved

In order to solve the above problems, the utility model proposes an improved sealing structure of the high-speed shaft of the wind power speed increaser, the transmission process is stable, and the sealing effect is good.

(2) Technical solution

The improved sealing structure of the high-speed shaft of the wind power speed increaser of the present invention includes an output shaft end cover, a sealing slip ring arranged on the inner side of the output shaft end cover, a star ring arranged in the middle part of the inner side of the sealing slip ring, and a set A plurality of O-rings on the periphery of the sealing slip ring, an oil thrower sealing device arranged on the front side of the sealing slip ring; and a packing arranged on the rear side of the sealing slip ring.

Further, the output shaft cover is installed outside the bearing of the high-speed shaft.

As a preferred embodiment, a skeleton oil seal is installed on the inner side of the output shaft end cover and on the front side of the packing.

As a preferred embodiment, the sealing slip ring is made of polymer polytetrafluoroethylene.

As a preferred embodiment, the O-ring and star ring are made of nitrile rubber.

As a preferred embodiment, the inner surface of the sealing slip ring and star ring is provided with a wear-resistant layer.

(3) Beneficial effects

Compared with the prior art, the utility model improves the sealing structure of the high-speed shaft of the wind power speed increaser of the utility model. When the high-speed shaft moves through the oil throwing plate sealing device, the oil pollution can be prevented from leaking out, and the star ring and the The sealing slip ring together completes the rotating dynamic sealing function, and ensures that the entire seal can have a good sealing effect under high-speed operation; through the O-ring and the hydraulic sealing device, the elastic compression deformation pretightening force is achieved, and its installation is simple and the sealing effect is excellent. Well, through the packing installation, the third seal is completed, and external pollutants can be prevented from entering the high-speed shaft bearing.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

The improved sealing structure of the high-speed shaft of the wind power speed reducer shown in Figure 1 includes an output shaft end cover 1, a sealing slip ring 2 arranged inside the output shaft end cover, and a star-shaped sealing ring arranged in the middle of the inner side of the sealing slip ring. ring 3, and a plurality of O-rings 4 arranged on the periphery of the sealing slip ring, and an oil throwing pan sealing device 5 arranged on the front side of the sealing slip ring; and a packing 6 arranged on the rear side of the sealing slip ring.

In yet another embodiment, the output shaft cover 1 is installed outside the bearing of the high-speed shaft 7 .

In yet another embodiment, a skeleton oil seal (not shown) is installed on the inner side of the output shaft cover 1 and on the front side of the packing 6 .

In yet another embodiment, the sealing slip ring 2 is made of polymer polytetrafluoroethylene.

In yet another embodiment, the O-ring 4 and star ring 3 are made of nitrile rubber.

In yet another embodiment, the inner surfaces of the sealing slip ring 2 and star ring 3 are provided with a wear-resistant layer.

The improved sealing structure of the high-speed shaft of the wind power speed increaser of the utility model can avoid the leakage of oil dirt when the high-speed shaft is operated by the sealing device of the oil thrower, and complete the rotating dynamic sealing function through the star ring and the sealing slip ring. , and ensure that the entire seal can have a good sealing effect under high-speed operation; through the O-ring and the hydraulic sealing device, the elastic compression deformation pre-tightening force is achieved, the installation is simple, and the sealing effect is good. Through the installation of the packing, the third Road seals, and can prevent external contaminants from entering high-speed shaft bearings.

The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the concept and scope of the present utility model. Under the premise of not departing from the design concept of the utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the utility model should fall into the protection scope of the utility model, and the technology claimed by the utility model The contents are all described in the claims.

Claims (6)

1. a hermetically-sealed construction for improved wind power speed-increasing machine high speed shaft, is characterized in that: comprise output shaft end cap, and establishBe placed in the sealing slip ring of output shaft end cap inner side, and be arranged at the star circle of sealing slip ring middle inside, and be arranged at sealing slip ringPeripheral multiple O type circles, and be arranged at the disc sealing device that seals slip ring front side; And be arranged at the dish of sealing slip ring rear sideRoot.

2. the hermetically-sealed construction of improved wind power speed-increasing machine high speed shaft according to claim 1, is characterized in that: described inOutput shaft end cap is installed on its bearing outside of high speed shaft.

3. the hermetically-sealed construction of improved wind power speed-increasing machine high speed shaft according to claim 1, is characterized in that: described inThere is outside framework oil seal output shaft end cap inner side in packing installed in front.

4. the hermetically-sealed construction of improved wind power speed-increasing machine high speed shaft according to claim 1, is characterized in that: described inSealing slip ring is made up of high molecular polymer polytetrafluoroethylmaterial material.

5. the hermetically-sealed construction of improved wind power speed-increasing machine high speed shaft according to claim 1, is characterized in that: described OType circle and star circle are made up of acrylonitrile-butadiene rubber.

6. the hermetically-sealed construction of improved wind power speed-increasing machine high speed shaft according to claim 1, is characterized in that: described inSealing slip ring and star circle inner surface are provided with wearing layer.