CN215761813U - Novel sealing oil baffle system - Google Patents
Novel sealing oil baffle system Download PDFInfo
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- CN215761813U CN215761813U CN202121475336.5U CN202121475336U CN215761813U CN 215761813 U CN215761813 U CN 215761813U CN 202121475336 U CN202121475336 U CN 202121475336U CN 215761813 U CN215761813 U CN 215761813U
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- oil baffle
- bearing
- sealing
- comb tooth
- sealing assembly
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Abstract
The utility model belongs to the field of bearing sealing technology in a generator, and particularly relates to a novel sealing oil baffle system. The technical scheme is as follows: a novel sealing oil baffle system comprises an inner bearing oil baffle and an outer bearing oil baffle which are connected to a machine body, wherein a bearing is positioned between the inner bearing oil baffle and the outer bearing oil baffle; the bearing inner oil baffle comprises two branches, an inner side comb tooth group is arranged on the branch far away from the bearing outer oil baffle, an inner side sealing assembly is arranged on the branch close to the bearing outer oil baffle, an outer side sealing assembly is arranged on the bearing outer oil baffle, and the inner side comb tooth group, the inner side sealing assembly and the outer side sealing assembly are all in contact with a rotating shaft of the generator; the bearing oil baffle further comprises an air supply connecting pipe, and the air supply connecting pipe is communicated with a cavity defined by the two branches of the oil baffle in the bearing. The utility model provides a novel sealing oil baffle system capable of offsetting the suction force of inner side wind pressure.
Description
Technical Field
The utility model belongs to the field of bearing sealing technology in a generator, and particularly relates to a novel sealing oil baffle system.
Background
The full air-cooling end cover type bearing turbonator is composed of a stator, a rotor, a bearing assembly and the like. The bearing assembly is used for supporting the rotor part rotating at a high speed, and all parts of the generator are compactly arranged. The bearing lubricating oil and the high-pressure head centrifugal fan on the rotor are separated by an oil baffle cover to seal the lubricating oil, otherwise, the lubricating oil leaks into the generator to pollute parts such as the stator and the rotor in the generator, further, faults such as grounding, short circuit and the like can be caused, and even more serious safety accidents are caused.
In order to solve the problem of oil leakage of lubricating oil, a sealing oil baffle system is arranged at the bearing for sealing the lubricating oil. The sealing oil baffle is used as a key part of a sealing oil system and is arranged on two sides of the bearing, and a certain gap is reserved between the sealing oil baffle and the rotating rotor, so that the generator rotor can seal lubricating oil when running normally at high speed.
The bearing oil baffle structure of the existing air-cooled turbogenerator mainly has the following two structural forms:
as shown in fig. 4, the inner oil baffle and the outer oil baffle of the comb-tooth type sealing oil baffle system are two layers of comb-tooth groups, so that the structure is simple, the installation and maintenance performance is good, and the comb-tooth type sealing oil baffle system is commonly used for a seat type bearing. As shown in fig. 5, the floating type sealing oil baffle system has an inner oil baffle and an outer oil baffle which are both composed of two layers of floating type oil baffles.
For the end cover type bearing, under the influence of wind pressure suction force on the inner side of the machine, the oil sealing performance of the comb-tooth type sealing oil baffle system and the floating type sealing oil baffle system is poor, so that lubricating oil is sucked into the inner side of the machine.
Disclosure of Invention
In order to solve the above problems in the prior art, an object of the present invention is to provide a novel sealing oil baffle system capable of offsetting the suction force of the inner side wind pressure.
The technical scheme adopted by the utility model is as follows:
a novel sealing oil baffle system comprises an inner bearing oil baffle and an outer bearing oil baffle which are connected to a machine body, wherein a bearing is positioned between the inner bearing oil baffle and the outer bearing oil baffle; the bearing inner oil baffle comprises two branches, an inner side comb tooth group is arranged on the branch far away from the bearing outer oil baffle, an inner side sealing assembly is arranged on the branch close to the bearing outer oil baffle, an outer side sealing assembly is arranged on the bearing outer oil baffle, and the inner side comb tooth group, the inner side sealing assembly and the outer side sealing assembly are all in contact with a rotating shaft of the generator; the bearing oil baffle further comprises an air supply connecting pipe, and the air supply connecting pipe is communicated with a cavity defined by the two branches of the oil baffle in the bearing.
The inner side comb tooth group and the inner side sealing assembly on the outer oil baffle of the bearing reliably seal the inner side of the bearing, and the outer side sealing assembly on the outer oil baffle of the bearing reliably seals the outer side of the bearing. The air supply connecting pipe is communicated with a cavity formed by two branches of the oil baffle in the bearing, so that air with certain pressure is continuously supplied to the cavity through the air supply connecting pipe, the wind pressure suction force on the inner side of the machine can be offset, and lubricating oil is prevented from being sucked into the inner side of the machine.
As a preferable scheme of the present invention, the inner side sealing assembly includes an inner side floating oil baffle, inner side comb teeth, and a comb plate, which are sequentially disposed, and the inner side comb teeth group is located on a side of the inner side floating oil baffle away from the inner side comb teeth. The inner side floating oil baffle, the inner side comb teeth and the comb plate form an inner side sealing assembly which can reliably seal the inner side of the bearing, and good oil sealing performance is guaranteed.
As the preferable scheme of the utility model, the comb plate is detachably connected with the oil baffle in the bearing. The comb plate can be detachably connected, and is convenient to install.
As a preferable scheme of the present invention, the outer sealing assembly includes an outer comb tooth group, an outer comb tooth, and an outer floating oil barrier, which are sequentially disposed, and the outer comb tooth is located on a side of the outer comb tooth group away from the inner sealing assembly. The outside comb tooth group, the outside comb tooth, the outside oil that floats keep off the constitution outside seal assembly, can reliably seal the bearing outside.
In a preferred embodiment of the present invention, the air inlet of the air supply connecting pipe is inclined toward the inner comb teeth group side. The air inlet of the air supply connecting pipe faces towards the inner side of the machine, so that the offsetting effect of the wind pressure suction force at the inner side of the machine can be further improved.
As a preferred aspect of the present invention, the inner comb tooth group is located on a large-diameter section of the generator rotating shaft, and the inner seal assembly is located on a small-diameter section of the generator rotating shaft.
The utility model has the beneficial effects that: the inner comb tooth group and the inner sealing assembly on the outer oil baffle of the bearing reliably seal the inner side of the bearing, and the outer sealing assembly on the outer oil baffle of the bearing reliably seals the outer side of the bearing. The air supply connecting pipe is communicated with a cavity formed by two branches of the oil baffle in the bearing, so that air with certain pressure is continuously supplied to the cavity through the air supply connecting pipe, the wind pressure suction force on the inner side of the machine can be offset, and lubricating oil is prevented from being sucked into the inner side of the machine.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an oil baffle in the bearing;
FIG. 3 is a schematic structural diagram of an outer oil catch of the bearing;
FIG. 4 is a schematic structural diagram of a prior art comb seal oil baffle system;
fig. 5 is a schematic structural diagram of a floating type sealing oil baffle system in the prior art.
In the figure, 1-body; 2-oil shield in the bearing; 3-bearing outer oil shield; 4-a bearing; 5-inner comb teeth group; 6-inner side sealing component; 7-an outboard seal assembly; 8-air supply connecting pipe; 9-a generator shaft; 61-inner floating oil baffle; 62-inside comb teeth; 63-a comb plate; 71-outer set of comb teeth; 72-outside comb teeth; 73-outer floating oil dam.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
As shown in fig. 1, the novel sealing oil baffle system of the present embodiment includes an inner bearing oil baffle 2 and an outer bearing oil baffle 3 connected to a machine body 1, and a bearing 4 is located between the inner bearing oil baffle 2 and the outer bearing oil baffle 3; the bearing inner oil baffle 2 comprises two branches, an inner side comb tooth group 5 is arranged on the branch far away from the bearing outer oil baffle 3, an inner side sealing component 6 is arranged on the branch close to the bearing outer oil baffle 3, an outer side sealing component 7 is arranged on the bearing outer oil baffle 3, and the inner side comb tooth group 5, the inner side sealing component 6 and the outer side sealing component 7 are all in contact with a rotating shaft 9 of the generator; the bearing oil baffle device also comprises an air supply connecting pipe 8, wherein the air supply connecting pipe 8 is communicated with a cavity defined by two branches of the oil baffle 2 in the bearing.
The inner side comb tooth group 5 and the inner side sealing assembly 6 on the outer oil baffle 3 of the bearing reliably seal the inner side of the bearing 4, and the outer side sealing assembly 7 on the outer oil baffle 3 of the bearing reliably seals the outer side of the bearing 4. The air supply connecting pipe 8 is communicated with a cavity formed by two branches of the oil baffle 2 in the bearing, so that air with certain pressure is continuously supplied to the cavity through the air supply connecting pipe 8, the suction force of the wind pressure at the inner side of the machine can be offset, and lubricating oil is prevented from being sucked into the inner side of the machine.
As shown in fig. 2, the inner sealing assembly 6 includes an inner floating oil stop 61, inner comb teeth 62 and a comb plate 63, which are sequentially disposed, and the inner comb group 5 is located on a side of the inner floating oil stop 61 away from the inner comb teeth 62. The inner side floating oil baffle 61, the inner side comb teeth 62 and the comb plate 63 form the inner side sealing assembly 6 which can reliably seal the inner side of the bearing 4, and good oil sealing performance is guaranteed. The comb plate 63 is detachably connected with the oil retainer 2 in the bearing. The comb plate 63 is detachably connected, and is convenient to install.
As shown in fig. 3, the outer seal assembly 7 includes an outer comb teeth group 71, outer comb teeth 72, and an outer floating oil baffle 73, which are sequentially arranged, and the outer comb teeth 72 are located on a side of the outer comb teeth group 71 away from the inner seal assembly 6. The outer side comb tooth group 71, the outer side comb teeth 72 and the outer side floating oil baffle 73 form an outer side sealing assembly 7, and the outer side of the bearing 4 can be reliably sealed.
Further, the air inlet of the air supply connecting pipe 8 is inclined toward the inner comb-tooth group 5 side. The air inlet of the air supply connecting pipe 8 faces the inner side of the machine, so that the offsetting effect of the wind pressure suction force on the inner side of the machine can be further improved.
The inner comb tooth group 5 is positioned on the large-diameter section of the generator rotating shaft 9, and the inner sealing component 6 is positioned on the small-diameter section of the generator rotating shaft 9.
The utility model is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (6)
1. A novel sealing oil baffle system is characterized by comprising an inner bearing oil baffle (2) and an outer bearing oil baffle (3) which are connected to a machine body (1), wherein a bearing (4) is positioned between the inner bearing oil baffle (2) and the outer bearing oil baffle (3); the bearing inner oil baffle (2) comprises two branches, an inner side comb tooth group (5) is arranged on the branch far away from the bearing outer oil baffle (3), an inner side sealing assembly (6) is arranged on the branch close to the bearing outer oil baffle (3), an outer side sealing assembly (7) is arranged on the bearing outer oil baffle (3), and the inner side comb tooth group (5), the inner side sealing assembly (6) and the outer side sealing assembly (7) are all in contact with a rotating shaft (9) of the generator; the bearing oil baffle device is characterized by further comprising an air supply connecting pipe (8), wherein the air supply connecting pipe (8) is communicated with a cavity defined by two branches of the bearing inner oil baffle (2).
2. The novel sealing oil baffle system as claimed in claim 1, wherein the inner sealing assembly (6) comprises an inner floating oil baffle (61), inner comb teeth (62) and a comb plate (63) which are arranged in sequence, and the inner comb tooth group (5) is positioned on the side of the inner floating oil baffle (61) far away from the inner comb teeth (62).
3. The novel sealing oil baffle system as claimed in claim 2, characterized in that the comb plate (63) is detachably connected with the oil baffle (2) in the bearing.
4. The novel sealing oil baffle system as claimed in claim 1, wherein the outer sealing assembly (7) comprises an outer comb tooth group (71), an outer comb tooth (72) and an outer floating oil baffle (73) which are arranged in sequence, and the outer comb tooth (72) is positioned on one side of the outer comb tooth group (71) far away from the inner sealing assembly (6).
5. The novel sealing oil baffle system as claimed in claim 1, characterized in that the air inlet of the air supply connecting pipe (8) is inclined towards the inner comb tooth group (5).
6. The novel sealing oil baffle system as claimed in any one of claims 1 to 5, characterized in that the inner comb tooth group (5) is located on a large-diameter section of the generator rotating shaft (9), and the inner sealing component (6) is located on a small-diameter section of the generator rotating shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121475336.5U CN215761813U (en) | 2021-06-30 | 2021-06-30 | Novel sealing oil baffle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121475336.5U CN215761813U (en) | 2021-06-30 | 2021-06-30 | Novel sealing oil baffle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215761813U true CN215761813U (en) | 2022-02-08 |
Family
ID=80103172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121475336.5U Active CN215761813U (en) | 2021-06-30 | 2021-06-30 | Novel sealing oil baffle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215761813U (en) |
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2021
- 2021-06-30 CN CN202121475336.5U patent/CN215761813U/en active Active
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