CN209943486U - Oil leakage prevention high-speed shaft end cover of wind turbine generator gearbox - Google Patents

Abstract

The utility model relates to the technical field of gear box sealing structures, in particular to an oil leakage prevention high-speed shaft end cover of a wind turbine generator gearbox, which comprises an end cover body, the shaft center of the end cover body is provided with a through hole, the inner side of the end cover body is integrally formed with a sleeve, and the end cover further comprises an oil baffle plate, a sealing ring, an oil seal and a static labyrinth ring, the oil baffle plate is fixed in the sleeve, a first annular groove and a second annular groove are arranged on the inner side of the through hole, the sealing ring and the oil seal are respectively embedded in the first annular groove and the second annular groove, a plurality of annular grooves concentric with the through hole are arranged on the outer side of the end cover body, a first through hole is formed in the shaft center of the static labyrinth ring, a plurality of annular protrusions concentric with the first through hole are arranged on one side, close to the end cover body, of the static labyrinth ring, and the annular protrusions and the annular grooves are in clearance fit to form labyrinth seals. The end cover is reasonable in structure and good in sealing performance, and oil leakage of the gear box from the end cover of the high-speed shaft can be avoided.

Description

Oil leakage prevention high-speed shaft end cover of wind turbine generator gearbox

Technical Field

The utility model relates to a gear box seal structure technical field, concretely relates to wind turbine generator system gear box leak protection oil high-speed shaft end cover.

Background

The gearbox in a wind generating set is an important mechanical component, and the main function of the gearbox is to transmit the power generated by the wind wheel under the action of wind power to a generator and enable the generator to obtain a corresponding rotating speed. In the operation process of the gear box, the oil leakage phenomenon at the high-speed end is a fault with high frequency, and lubricating oil in the gear box leaks from the end cover at the high-speed end, so that the lubricating oil leaks to pollute an engine room, thereby not only causing waste, but also polluting the environment and influencing the integrity of the whole equipment. Therefore, the end cover is of great importance for the arrangement of the end cover of the high-speed shaft of the gearbox of the wind turbine generator, not only can insufficient lubrication caused by the leakage of lubricating oil be prevented, but also the situation that foreign matters outside enter the box body to cause serious friction, pollute the lubricating oil and influence the service life can be prevented. At present, the commonly used high-speed shaft end cover is often sealed by an oil throwing groove and filler, the filler is easily worn and consumed by a rotating shaft to cause poor sealing, and fragments after the filler is worn and worn easily block an oil return hole in the oil throwing groove to cause unsmooth oil return and easily cause lubricating oil leakage, so that the high-speed shaft end cover for preventing oil leakage of the gearbox of the wind turbine generator is urgently needed at present.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that above-mentioned exists, designed a wind turbine generator system gear box leak protection oil high-speed shaft end cover, this end cover is rational in infrastructure, simple to operate, and the leakproofness is good, can avoid the gear box to locate the oil leak from the high-speed shaft end cover.

In order to realize the technical purpose, reach above-mentioned technological effect, the utility model discloses a realize through following technical scheme:

an oil leakage preventing high-speed shaft end cover of a wind turbine generator gearbox comprises an end cover body, wherein a through hole is formed in the shaft center of the end cover body, a sleeve is integrally formed on the inner side of the end cover body, the oil leakage preventing high-speed shaft end cover further comprises an oil baffle plate, a sealing ring, an oil seal and a static labyrinth ring, the inner diameter of the sleeve is gradually increased from one end close to the end cover body to one end far away from the end cover body, the oil baffle plate is fixed inside the sleeve, a round hole is formed in the center of the oil baffle plate and is positioned on the central line of the through hole, an oil return hole communicated with two sides of the oil baffle plate is formed at the joint of the lower end of the oil baffle plate and the sleeve, a first annular groove is formed in one end close to the sleeve in the inner side of the through hole, a second annular groove is formed in one end far away from the sleeve in the inner, the static labyrinth ring is positioned on the outer side of the end cover body, a first through hole is formed in the shaft center of the static labyrinth ring, a plurality of annular bulges concentric with the first through hole are arranged on one side, close to the end cover body, of the static labyrinth ring, and the annular bulges are in clearance fit with the annular grooves to form labyrinth seals.

Further, the sealing washer is O type sealing washer, the oil blanket is the skeleton oil blanket.

Further, the groove bottom of the first annular groove is arc-shaped.

Furthermore, the oil baffle plate and the sleeve are of an integrated structure.

The utility model has the advantages that: this high-speed shaft end cover is at first through keeping off the most lubricating oil that gets rid of when gear revolve through the fender oil board, the lubricating oil accessible oil gallery that gets into on fender oil board right side from the gap department between round hole and the high-speed shaft flows back to the gear box, the sleeve internal diameter is kept away from sleeve body one side by being close to end cover body side direction and is crescent, make the lubricating oil that gets into fender oil board right side more conveniently flow back to the gear box, be equipped with sealing washer and oil blanket in the through-hole of end cover body, increase the leakproofness between end cover and the high-speed shaft, the labyrinth seal knot that forms through the annular groove in the end cover body outside and quiet labyrinth ring at last is enough sealed, this end cover is rational in infrastructure, high durability and convenient installation.

Drawings

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

FIG. 1 is a schematic view of an overall structure of an oil leakage prevention high-speed shaft end cover of a wind turbine gearbox;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic structural diagram of an end cover of a high-speed shaft for preventing oil leakage of a gearbox of a wind turbine generator set after being installed.

In the drawings, the components represented by the respective reference numerals are listed below:

1-end cover body, 11-sleeve, 12-oil baffle, 121-round hole, 122-oil return hole, 13-first annular groove, 14-second annular groove, 15-annular groove, 2-static labyrinth ring, 21-first through hole, 22-annular bulge, 3-sealing ring, 4-oil seal, 5-gear box, 6-bearing, 7-high speed shaft and 8-screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the oil leakage preventing high-speed shaft end cover of the wind turbine generator gearbox comprises an end cover body 1, a through hole is formed in the shaft center of the end cover body 1, a sleeve 11 is integrally formed on the inner side of the end cover body 1, an oil baffle plate 12, a seal ring 3, an oil seal 4 and a static labyrinth ring 2 are further included, the inner diameter of the sleeve 11 is gradually increased from one end close to the end cover body 1 to one end far away from the end cover body 1, the oil baffle plate 12 is fixed inside the sleeve 11, a round hole 121 is formed in the center of the oil baffle plate 12 and is located on the central line of the through hole, an oil return hole 122 communicated with two sides of the oil baffle plate 12 is formed at the joint of the lower end of the oil baffle plate 12 and the sleeve 11, a first annular groove 13 is formed at one end close to the sleeve 11 on the inner side of the through, sealing washer 3 and oil blanket 4 inlay respectively and establish in first annular groove 13 and second annular groove 14, a plurality of and the endocentric annular groove 15 of through-hole have been seted up in the end cover body 1 outside, quiet labyrinth ring 2 is located the end cover body 1 outside, and first through-hole 21 has been seted up at the axle center of quiet labyrinth ring 2, and quiet labyrinth ring 2 is close to one side of end cover body 1 and is equipped with a plurality of and the endocentric annular bulge 22 of first through-hole 21 just annular bulge 22 forms labyrinth with the 15 clearance fit of annular groove.

Wherein, sealing washer 3 is O type sealing washer, oil blanket 4 is the skeleton oil blanket.

Wherein, the groove bottom of the first annular groove 13 is arc-shaped.

The oil baffle 12 and the sleeve 11 are of an integrated structure.

One specific application of this embodiment is: during installation, the periphery of the end cover body 1 is fixed on the gear box 5 through screws 8, the sleeve 11 on the inner side of the end cover body 1 is pressed on the outer side of the bearing 6 for supporting the high-speed shaft 7, the circular hole 121 in the center of the oil baffle plate 12 and the through hole in the center of the end cover body 1 are in clearance fit with the high-speed shaft 7, finally the static labyrinth ring 2 is sleeved on the high-speed shaft 7 on the outer side of the end cover body 1, the first through hole 21 of the static labyrinth ring 7 is in interference fit with the high-speed shaft 7, and the annular bulge 22 on one side, close to the end cover body 1, of the static labyrinth ring 2 is in clearance fit with the annular groove 15 on. Most of lubricating oil thrown up when the gear rotates is firstly blocked by the oil baffle plate 12 when the gear box 5 works, the lubricating oil entering the right side of the oil baffle plate 12 from the gap between the circular hole 121 and the high-speed shaft 7 can flow back to the gear box 5 through the oil return hole 122, the inner diameter of the sleeve 12 is gradually increased from one side close to the end cover body 1 to the side far away from the sleeve body 1, so that the lubricating oil entering the right side of the oil baffle plate 12 can more conveniently flow back to the gear box 5, a sealing ring 3 and an oil seal 4 are arranged in a through hole of the end cover body 1, the sealing performance between the end cover and the high-speed shaft 7 is improved, and finally, a labyrinth seal is formed by the annular groove 15 and the static labyrinth ring 2 outside the end cover body 1, the end cover is reasonable in structure and convenient.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (4)

1. The utility model provides a wind turbine generator system gear box leak protection oil high-speed shaft end cover, includes the end cover body, the through-hole has been seted up at the axle center of end cover body, the inboard integrated into one piece of end cover body has sleeve, its characterized in that: the oil baffle is fixed inside the sleeve, a round hole is formed in the center of the oil baffle, the round hole is located on the central line of the through hole, oil return holes communicated with two sides of the oil baffle are formed in the joint of the lower end of the oil baffle and the sleeve, a first annular groove is formed in one end, close to the sleeve, of the inner side of the through hole, a second annular groove is formed in one end, far away from the sleeve, of the inner side of the through hole, the sealing ring and the oil seal are respectively embedded in the first annular groove and the second annular groove, a plurality of annular grooves concentric with the through hole are formed in the outer side of the end cover body, the static labyrinth ring is located on the outer side of the end cover body, a first through hole is formed in the shaft center of the static labyrinth ring, a plurality of annular bulges concentric with the first through hole are formed in one side, close to the end cover body, of the static labyrinth ring, and a plurality of annular bulges concentric with the first through hole are formed The clearance fit forms a labyrinth seal.

2. The wind turbine generator gearbox oil leakage prevention high-speed shaft end cover according to claim 1, characterized in that: the sealing ring is an O-shaped sealing ring, and the oil seal is a framework oil seal.

3. The wind turbine generator gearbox oil leakage prevention high-speed shaft end cover according to claim 1, characterized in that: the groove bottom of the first annular groove is arc-shaped.

4. The wind turbine generator gearbox oil leakage prevention high-speed shaft end cover according to claim 1, characterized in that: the oil baffle plate and the sleeve are of an integrated structure.

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