CN223019358U - Structure for improving circulation of high-speed oil mist of wind power gear box - Google Patents

Abstract

The utility model provides a structure for improving high-speed oil mist circulation of a wind power gear box, which is characterized in that an oil slinger is fixedly sleeved at a shaft neck of the high-speed shaft, the oil slinger is sleeved between the oil slinger and the box, a space between the oil slinger and the oil slinger is divided into a first oil return cavity and a second oil return cavity which are communicated with each other, a high-pressure oil mist channel which is communicated with the first oil return cavity and the outer side of the oil slinger is arranged on the oil permeance cover, a one-way valve positioned on the outer side of the oil permeance cover is screwed on the high-pressure oil mist channel, an air filter is arranged on the one-way valve, and oil return pipelines connected with the first oil return cavity are arranged in the box and the oil permeance cover. According to the utility model, in the high-speed rotation process of the high-speed shaft of the gear box, the leakage fault of the gear box caused by the exudation of high-pressure oil mist from the high-speed shaft is avoided.

Description

Structure for improving circulation of high-speed oil mist of wind power gear box

Technical Field

The utility model relates to the field of wind power gearboxes, in particular to a structure for improving high-speed oil mist circulation of a wind power gearbox.

Background

According to the installation time of wind power gearboxes in China, most gearboxes are about to enter a stage needing maintenance or maintenance, and the problem of oil slinging of a high-speed shaft is always a technical difficulty in the industry.

In the running process of the wind power gear box, the rotating speed of the high-speed shaft is higher, the air pressure in the gear box is higher, besides liquid lubricating oil and high-pressure oil mist, the existing sealing structure cannot completely prevent the oil mist from overflowing, and further improvement is needed.

Disclosure of utility model

The utility model provides a structure for improving high-speed oil mist circulation of a wind power gear box, which aims to solve the defects in the prior art, and avoid oil leakage faults of the gear box caused by exudation of high-pressure oil mist from a high-speed shaft position in the high-speed rotation process of the high-speed shaft of the gear box.

The technical scheme adopted for solving the technical problems is as follows:

a structure for improving high-speed oil mist circulation of a wind power gear box is characterized in that a high-speed shaft of the wind power gear box penetrates through a through hole of a through cover, and the through cover is fixedly connected to a box body:

An oil slinger is fixedly sleeved at the shaft neck of the high-speed shaft, and an oil slinger is sleeved between the oil slinger and the box body;

The oil slinger divides the space between the transparent cover and the oil slinger into a first oil return cavity and a second oil return cavity which are communicated with each other;

The transparent cover is provided with a high-pressure oil mist channel which is communicated with the first oil return cavity and the outer side of the transparent cover, the one-way valve positioned at the outer side of the transparent cover is screwed on the high-pressure oil mist channel, and the air filter is arranged on the one-way valve;

The box body and the penetrating cover are internally provided with an oil return pipeline connected with the first oil return cavity.

The oil slinger comprises a main body fixedly sleeved at the shaft neck of the high-speed shaft, an annular convex wall is arranged on the main body, and an annular outer baffle ring extends outwards from the outer end part of the annular convex wall along the axial direction;

The inner side of the annular convex wall of the oil slinger, the oil slinger and the penetrating cover enclose a first oil return cavity, and the outer side of the annular convex wall of the oil slinger, the annular outer baffle ring of the oil slinger and the penetrating cover enclose a second oil return cavity.

The penetrating cover is provided with a ring groove facing the second oil return cavity.

The body of the oil slinger is an interference fit at the journal of the high speed shaft.

The utility model has the advantages that:

The high-speed sealing device has the advantages of simple and practical structure, improving the high-speed sealing effect of the wind power gear box, enabling high-oil-pressure oil mist in the interior to flow from the one-way valve to the air filter outside the gear box, enabling the air filter to adsorb the oil mist, and avoiding a large amount of oil mist from directly flowing outside the gear box. The oil/oil mist can be prevented from seeping out from the high-speed shaft during the operation of the gearbox, and the gearbox has oil seepage fault.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of the present utility model.

Detailed Description

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art. In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "bottom," and the like as used in this specification are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1:

The high-speed shaft 7 of the wind power gear box penetrates through the through hole of the transparent cover 2, and the transparent cover 2 is fixedly connected to the box body 1.

The oil slinger 4 is sleeved at the shaft neck of the high-speed shaft 2 in an interference fit manner, the oil slinger 4 comprises a main body 41 sleeved at the shaft neck of the high-speed shaft 2 in an interference fit manner, an annular convex wall 42 is arranged on the main body 41, and an annular outer baffle ring 43 extends outwards from the outer end part of the annular convex wall 42 along the axial direction.

A slinger 3 is sleeved between the slinger 4 and the box body 1.

The inner side of the annular convex wall 42 of the oil slinger 4, the oil slinger 3 and the penetrating cover 2 enclose a first oil return cavity 234, and the outer side of the annular convex wall 42 of the oil slinger 4, the annular outer baffle ring 43 of the oil slinger 4 and the penetrating cover 2 enclose a second oil return cavity 24.

The through cover 2 is provided with a ring groove 21 facing the second oil return cavity 24.

The tank 1 and the through cover 2 are provided with an oil return pipeline 6 connected with the first oil return cavity 234.

The transparent cover 2 is provided with a high-pressure oil mist channel 20 which is communicated with the first oil return cavity 234 and the outer side of the transparent cover 2, the check valve 8 positioned on the outer side of the transparent cover 2 is arranged on the high-pressure oil mist channel 20 in a screwed mode, and the air filter 9 is arranged on the check valve 8.

Principle of oil return:

arrows in the figure represent the flow direction of the lubricating oil and the high-pressure oil mist.

The left side of fig. 1 is the inside of the box body 1, the lubricating oil is the internal lubricating oil, and part of the lubricating oil and high-pressure oil mist overflow outwards into the first oil return cavity 234 through the gap between the oil retainer 3 and the oil slinger 4 (comprising two sections of gaps: a gap A between the oil retainer 3 and the main body 41 of the oil slinger 4, and a gap B between the outer end surface of the oil retainer 3 and the annular convex wall 42 of the oil slinger 4).

The oil slinger 4 is in interference fit with the journal of the high-speed shaft 7, and when in work, the oil slinger rotates along with the high-speed shaft 7, so that the oil slinger can be used for slinging oil. Other parts are connected with the box body 1 and are in a static state.

The oil return line E utilizes the reverse oil slinger principle to sling most of the lubricating oil in the first oil return cavity 234 in the reverse direction, splashes to the surface of the oil slinger 4, finally flows to the oil return line 6 arranged on the through cover 2 along the surface of the oil slinger 4 and returns to the inside of the box body 1.

A small part of the oil return line E is used for completely untreated lubricating oil and high-pressure oil mist to enter the second oil return cavity 24 through a gap C between the outer annular surface of the annular outer baffle ring 43 of the oil retainer 4 and the through cover 2.

The oil return line F distributes the lubricating oil and the high-pressure oil mist in the second oil return cavity 24 to the oil return ring groove 21 in the through cover 2, and then flows along the oil return ring groove 21, the inner wall of the through cover 2, the gap C between the outer ring surface of the outer baffle ring 43 and the through cover 2, the first oil return cavity 234, flows to the oil return pipeline 6 opened by the through cover 2, and returns to the inside of the box 1.

The high-pressure oil mist in the first oil return chamber 234 overflows outward through the high-pressure oil mist passage 20, passes through the check valve 8, and then enters the air cleaner 9 to be adsorbed, and the high-pressure oil mist cannot flow back because of the check valve.

The air cleaner 9 is replaced at regular intervals.

On the basis of analyzing the oil leakage possibility reasons, the novel high-pressure oil fog channel, the check valve and the air filter combined structure body are innovatively designed, and the problem of oil throwing of a high-speed shaft of a batch of wind power gear boxes is successfully solved.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A structure for improving high-speed oil mist circulation of a wind power gear box is characterized in that an oil slinger is fixedly sleeved at a shaft neck of the high-speed shaft, an oil slinger is sleeved between the oil slinger and the box, the oil slinger divides a space between the oil slinger and the oil slinger into a first oil return cavity and a second oil return cavity which are communicated with each other, a high-pressure oil mist channel which is communicated with the first oil return cavity and the outer side of the oil slinger is arranged on the oil slinger, a check valve positioned on the outer side of the oil slinger is arranged on the high-pressure oil mist channel in a screwed mode, an air filter is arranged on the check valve, and an oil return pipeline connected with the first oil return cavity is arranged in the box and the oil slinger.

2. A structure for improving high-speed oil mist circulation of a wind power gear box is characterized in that an oil slinger comprises a main body fixedly sleeved at a shaft neck of a high-speed shaft, an annular convex wall is arranged on the main body, an annular outer baffle ring extends outwards from the outer end of the annular convex wall along the axial direction, a first oil return cavity is surrounded by the inner side of the annular convex wall of the oil slinger, the oil slinger and a penetrating cover, and a second oil return cavity is surrounded by the outer side of the annular convex wall of the oil slinger, the annular outer baffle ring of the oil slinger and the penetrating cover.

3. The structure for improving high-speed oil mist circulation of a wind power gear box according to claim 1, wherein the penetrating cover is provided with a ring groove facing the second oil return cavity.

4. A structure for improving high-speed oil mist circulation of a wind power gear box according to claim 1 is characterized in that a main body of the oil slinger is in interference fit with a shaft neck of a high-speed shaft.