CN109707849B - Oil scraper ring structure - Google Patents
Oil scraper ring structure Download PDFInfo
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- CN109707849B CN109707849B CN201910026261.3A CN201910026261A CN109707849B CN 109707849 B CN109707849 B CN 109707849B CN 201910026261 A CN201910026261 A CN 201910026261A CN 109707849 B CN109707849 B CN 109707849B
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- oil
- baffle
- slinger
- rotor
- mounting ring
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Abstract
The invention discloses an oil deflector ring structure, and belongs to the technical field of steam turbines and gas turbines. The oil deflector ring structure comprises an oil deflector ring, a rotor, a pre-baffle and a mounting ring; the oil deflector ring and the pre-baffle are both of annular structures, and the rotor penetrates through inner holes of the oil deflector ring and the pre-baffle; the pre-baffle is positioned on the inner side of the oil slinger, and the pre-baffle is connected with the oil slinger through a mounting ring; the oil slinger is provided with a plurality of oil seal teeth close to the rotor; the inner diameter of the pre-baffle is smaller than the diameter of the oil seal teeth, the diameter of the rotor at the pre-baffle is smaller than the diameter of the rotor at the oil seal teeth, and the diameter difference of the rotors forms a boss. The oil deflector ring structure can effectively prevent lubricating oil from leaking from the bearing box.
Description
Technical Field
The invention relates to an oil deflector ring structure, and belongs to the technical field of steam turbines and gas turbines.
Background
The rotors of steam and gas turbines are supported and positioned by bearings housed in bearing housings. During operation, the bearings need to be sufficiently lubricated and cooled, so that a large amount of lubricating oil needs to be introduced into the bearing boxes. These lubricating oils are in a flowing and splashing state in the bearing housing. Since the rotor is extended out of the bearing housing, an oil retainer is provided between the bearing housing and the rotor to prevent the lubricant from leaking out of the bearing housing, thereby preventing fire and loss of the lubricant.
The oil slinger is generally provided with a plurality of oil seal teeth at the position close to the rotor at the inner diameter, and lubricating oil is blocked from flowing out of the bearing box step by step. However, because there is a gap between the teeth of the oil seal and the rotor, if the amount of oil splashed onto the slinger is large, leakage is likely to occur in this structure.
Disclosure of Invention
The invention aims to: in view of the above problems, the present invention provides an oil slinger structure which can effectively prevent lubricating oil from leaking out of a bearing housing.
The technical scheme adopted by the invention is as follows:
an oil slinger structure comprises an oil slinger, a rotor, a pre-baffle and a mounting ring;
the oil deflector ring and the pre-baffle are both of annular structures, and the rotor penetrates through inner holes of the oil deflector ring and the pre-baffle;
the pre-baffle is positioned on the inner side of the oil slinger, and the pre-baffle is connected with the oil slinger through a mounting ring;
the oil slinger is provided with a plurality of oil seal teeth close to the rotor;
the inner diameter of the pre-baffle is smaller than that of the oil seal teeth, the diameter of the rotor at the pre-baffle is smaller than that of the rotor at the oil seal teeth, and the diameter difference of the rotors forms a boss.
Preferably, the inner diameter of the pre-baffle is smaller than the diameter of the rotor at the oil seal teeth, so that lubricating oil can be prevented from directly reaching the oil seal teeth.
Preferably, a thermal expansion distance exists between the pre-baffle and the boss, so that the boss is prevented from colliding with the pre-baffle after the rotor is heated and expanded.
Preferably, a gap is reserved between the pre-baffle and the rotor, so that the pre-baffle is prevented from directly rubbing against the rotor.
Preferably, a gap is reserved between the oil seal teeth and the rotor, so that the direct abrasion between the oil seal teeth and the rotor is avoided.
Preferably, the slinger, pre-deflector and mounting ring enclose a chamber.
Preferably, the oil retainer ring, the pre-baffle and the mounting ring are connected through welding, so that the oil retainer ring, the pre-baffle and the mounting ring are tightly attached to each other, and oil is prevented from leaking into a cavity formed by the three.
Preferably, the oil retainer ring, the pre-baffle and the mounting ring are connected through bolts, so that the oil retainer ring, the pre-baffle and the mounting ring are tightly attached to each other, and oil is prevented from leaking into a cavity formed by the three.
Preferably, the bottom of the mounting ring is provided with an oil dredging hole, a small amount of lubricating oil enters the cavity through a gap between the pre-baffle and the rotor and can be discharged to the bearing box through the oil dredging hole under the total gravity, and the oil dredging hole is not accumulated more.
Preferably, the side wall of the oil retainer ring is also provided with an annular oil collecting tank, and the oil collecting tank is positioned in a cavity formed by enclosing the oil retainer ring, the pre-baffle and the mounting ring and positioned at the outer ring of the oil seal teeth; a small amount of lubricating oil leaking into the closed cavity splashes onto the side wall of the oil baffle ring, flows into the oil collecting tank along the side wall of the oil baffle ring and flows to the lower part of the oil baffle ring along the annular groove, is discharged through the oleophobic hole at the bottom of the mounting ring, and cannot directly flow to the teeth of the oil seal.
The working principle of the oil scraper ring structure for preventing lubricating oil leakage is as follows: most of the lubricating oil splashed in the bearing box is blocked by the mounting ring and the pre-baffle plate, and the lubricating oil flows to the bottom of the bearing box along the mounting ring and the pre-baffle plate; in addition, a small part of lubricating oil flows from a gap between the pre-baffle and the rotor, is blocked by the boss and cannot directly flow to the position of the oil seal teeth, and the part of lubricating oil blocked by the boss is gathered in a cavity surrounded by the pre-baffle, the oil baffle and the mounting ring and is discharged to the bearing box through an oleophobic hole at the bottom of the mounting ring; a small amount of lubricating oil splashes on the side wall of the oil retainer ring, flows into the oil collecting tank along the side wall of the oil retainer ring, flows to the lower part of the oil retainer ring along the annular tank, is discharged through the oleophobic hole at the bottom of the mounting ring, and cannot directly flow to the teeth of the oil seal. The sealing effect can be greatly improved, and just because the boss sealing principle is adopted, the clearance between the oil seal teeth and the rotor is compared, the clearance between the pre-baffle and the rotor can be larger, the sealing effect can not be obviously reduced, and the radial collision and grinding risk of the pre-baffle and the rotor is reduced.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. greatly improve the sealing effect and prevent the leakage of the lubricating oil.
2. The clearance between the pre-baffle and the rotor can be larger without obviously reducing the sealing effect of the pre-baffle, so that the risk of radial collision and abrasion of the pre-baffle and the rotor is reduced.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is an overall structure of a slinger.
The labels in the figure are: 1-rotor, 2-oil retainer, 3-pre-baffle, 4-mounting ring, 5-oil seal teeth, 6-oil drain hole, 7-boss, 8-bearing box, 9-cavity and 10-oil collecting tank.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
The oil slinger structure of the embodiment comprises an oil slinger 2, a rotor 1, a pre-baffle 3 and a mounting ring 4;
the oil slinger 2 and the pre-baffle 3 are both of annular structures, and the rotor 1 penetrates through inner holes of the oil slinger 2 and the pre-baffle 3;
the pre-baffle 3 is positioned on the inner side of the oil slinger 2, and the pre-baffle 3 and the oil slinger 2 are connected through a mounting ring 4;
a plurality of oil seal teeth 5 are arranged on the oil slinger 2 close to the rotor 1;
the inner diameter of the pre-baffle 3 is smaller than the diameter of the oil seal teeth 5, the diameter of the rotor 1 at the position of the pre-baffle 3 is smaller than the diameter of the rotor 1 at the position of the oil seal teeth 5, and the diameter difference of the rotor 1 forms a boss 7.
Preferably, the inner diameter of the pre-baffle 3 is smaller than the diameter of the rotor 1 at the oil seal teeth 5.
Preferably, the pre-baffle 3 and the boss 7 have a thermal expansion distance therebetween.
Preferably, there is a gap between the pre-baffle 3 and the rotor 1.
Preferably, there is a gap between the oil seal teeth 5 and the rotor 1.
Preferably, the slinger 2, the pre-deflector 3 and the mounting ring 4 enclose a chamber.
Preferably, the slinger 2, the pre-deflector 3 and the mounting ring 4 are connected by welding.
Preferably, the bottom of the mounting ring 4 is provided with an oil drain hole 6.
Preferably, an annular oil collecting groove 10 is further arranged on the side wall of the oil slinger 2, and the oil collecting groove 10 is located in a cavity formed by the oil slinger 2, the pre-baffle 3 and the mounting ring 4 in an enclosing mode and is located at the outer ring of the oil seal teeth 5.
Example 2
The oil slinger structure of the embodiment comprises an oil slinger 2, a rotor 1, a pre-baffle 3 and a mounting ring 4;
the oil slinger 2 and the pre-baffle 3 are both of annular structures, and the rotor 1 penetrates through inner holes of the oil slinger 2 and the pre-baffle 3;
the pre-baffle 3 is positioned on the inner side of the oil slinger 2, and the pre-baffle 3 and the oil slinger 2 are connected through a mounting ring 4;
a plurality of oil seal teeth 5 are arranged on the oil slinger 2 close to the rotor 1;
the inner diameter of the pre-baffle 3 is smaller than the diameter of the oil seal teeth 5, the diameter of the rotor 1 at the position of the pre-baffle 3 is smaller than the diameter of the rotor 1 at the position of the oil seal teeth 5, and the diameter difference of the rotor 1 forms a boss 7.
Preferably, the inner diameter of the pre-baffle 3 is smaller than the diameter of the rotor 1 at the oil seal teeth 5.
Preferably, the pre-baffle 3 and the boss 7 have a thermal expansion distance therebetween.
Preferably, there is a gap between the pre-baffle 3 and the rotor 1.
Preferably, there is a gap between the oil seal teeth 5 and the rotor 1.
Preferably, the slinger 2, the pre-deflector 3 and the mounting ring 4 enclose a chamber.
Preferably, the slinger 2, pre-deflector and mounting ring 4 are bolted together.
Preferably, the bottom of the mounting ring 4 is provided with an oil drain hole 6.
Preferably, an annular oil collecting groove 10 is further arranged on the side wall of the oil slinger 2, and the oil collecting groove 10 is located in a cavity formed by the oil slinger 2, the pre-baffle 3 and the mounting ring 4 in an enclosing mode and is located at the outer ring of the oil seal teeth 5.
The working principle of the oil scraper ring structure for preventing lubricating oil leakage is as follows: most of the lubricating oil splashed in the bearing box is blocked by the mounting ring and the pre-baffle plate, and the lubricating oil flows to the bottom of the bearing box along the mounting ring and the pre-baffle plate; in addition, a small part of lubricating oil flows from a gap between the pre-baffle and the rotor, is blocked by the boss and cannot directly flow to the position of the oil seal teeth, and the part of lubricating oil blocked by the boss is gathered in a cavity surrounded by the pre-baffle, the oil baffle and the mounting ring and is discharged to the bearing box through an oleophobic hole at the bottom of the mounting ring; a small amount of lubricating oil splashes on the side wall of the oil retainer ring, flows into the oil collecting tank along the side wall of the oil retainer ring, flows to the lower part of the oil retainer ring along the annular tank, is discharged through the oleophobic hole at the bottom of the mounting ring, and cannot directly flow to the teeth of the oil seal. The sealing effect can be greatly improved, and just because the boss sealing principle is adopted, the clearance between the oil seal teeth and the rotor is compared, the clearance between the pre-baffle and the rotor can be larger, the sealing effect can not be obviously reduced, and the radial collision and grinding risk of the pre-baffle and the rotor is reduced.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (8)
1. A slinger structure characterized in that: comprises an oil slinger (2), a rotor (1), a pre-baffle (3) and a mounting ring (4);
the oil slinger (2) and the pre-baffle (3) are both of annular structures, and the rotor (1) penetrates through inner holes of the oil slinger (2) and the pre-baffle (3);
the pre-baffle (3) is positioned on the inner side of the oil retainer (2), and the pre-baffle (3) and the oil retainer (2) are connected through a mounting ring (4) to be tightly attached;
a plurality of oil seal teeth (5) are arranged on the oil slinger (2) close to the rotor (1);
the inner diameter of the pre-baffle (3) is smaller than the diameter of the oil seal teeth (5), the diameter of the rotor (1) at the position of the pre-baffle (3) is smaller than the diameter of the rotor (1) at the position of the oil seal teeth (5), and the diameter difference of the rotors (1) forms a boss (7), so that the gap between the pre-baffle (3) and the rotors (1) can be increased, and splashing lubricating oil is prevented from leaking;
the bottom of the mounting ring (4) is provided with an oil dredging hole (6); the side wall of the oil deflector ring (2) is also provided with an annular oil collecting groove (10), and the oil collecting groove (10) is positioned in a cavity formed by enclosing the oil deflector ring (2), the pre-baffle (3) and the mounting ring (4).
2. The slinger construction of claim 1 wherein: the inner diameter of the pre-baffle (3) is smaller than the diameter of the rotor (1) at the oil seal teeth (5).
3. The slinger construction of claim 1 wherein: and a thermal expansion distance is reserved between the pre-baffle (3) and the boss (7).
4. The slinger construction of claim 1 wherein: a gap is reserved between the pre-baffle (3) and the rotor (1).
5. The slinger construction of claim 1 wherein: and a gap is reserved between the oil seal teeth (5) and the rotor (1).
6. The slinger construction of claim 1 wherein: the oil slinger (2), the pre-baffle (3) and the mounting ring (4) enclose to form a cavity.
7. The slinger construction of claim 1 wherein: the oil slinger (2), the pre-baffle (3) and the mounting ring (4) are connected through welding.
8. The slinger construction of claim 1 wherein: the oil slinger (2), the pre-baffle (3) and the mounting ring (4) are connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910026261.3A CN109707849B (en) | 2019-01-11 | 2019-01-11 | Oil scraper ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910026261.3A CN109707849B (en) | 2019-01-11 | 2019-01-11 | Oil scraper ring structure |
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| Publication Number | Publication Date |
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| CN109707849A CN109707849A (en) | 2019-05-03 |
| CN109707849B true CN109707849B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910026261.3A Active CN109707849B (en) | 2019-01-11 | 2019-01-11 | Oil scraper ring structure |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110566494A (en) * | 2019-09-23 | 2019-12-13 | 南岳电控（衡阳）工业技术股份有限公司 | Protection device for quenching furnace, nitriding furnace stirring fan oil leak |
| CN113629929B (en) * | 2021-07-31 | 2022-11-11 | 智伟电力(无锡)有限公司 | Double-cavity oil retainer structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392834A (en) * | 2007-09-19 | 2009-03-25 | 中国铝业股份有限公司 | Hermetic sealing steam baffle structure |
| CN201145039Y (en) * | 2007-11-23 | 2008-11-05 | 哈尔滨市通盛电力技术开发有限公司 | Complete contact gas seal oil block |
| CN101216108A (en) * | 2007-12-29 | 2008-07-09 | 东方电气集团东方汽轮机有限公司 | Adjustable deflector and its regulation method |
| CN202149222U (en) * | 2011-07-06 | 2012-02-22 | 上海丹迪电力技术有限公司 | Direct-blowing type airtight seal oil shield structure |
| US10119474B2 (en) * | 2013-03-15 | 2018-11-06 | United Technologies Corporation | Vibration damping apparatus for hydrostatic seal of gas turbine engine |
| CN104279329B (en) * | 2013-07-02 | 2016-12-28 | 苏州热工研究院有限公司 | A kind of oil catch |
| CN207454771U (en) * | 2017-10-23 | 2018-06-05 | 湖北三峰透平装备股份有限公司 | A kind of import high negative pressure turbine composite seal device |
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