CN113629929B - Double-cavity oil retainer structure - Google Patents
Double-cavity oil retainer structure Download PDFInfo
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- CN113629929B CN113629929B CN202110877480.XA CN202110877480A CN113629929B CN 113629929 B CN113629929 B CN 113629929B CN 202110877480 A CN202110877480 A CN 202110877480A CN 113629929 B CN113629929 B CN 113629929B
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- oil
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- cavity
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- 239000003595 mist Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 7
- 239000002245 particle Substances 0.000 abstract description 25
- 239000003921 oil Substances 0.000 description 196
- 230000000903 blocking effect Effects 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 4
- 206010000369 Accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A double-cavity oil deflector ring structure belongs to the technical field of steam turbines and comprises an oil deflector ring, a rotor, an oil deflector sheet and a mounting ring; the rotor is provided with an annular boss part which is divided into an inward inclined ring boss part and an outward inclined ring boss part; the inner ring wall of the oil slinger is divided into an inward inclined ring wall, a vertical ring wall, an outward inclined ring wall and a flat ring wall; the outward inclined ring wall is provided with oil seal teeth and corresponds to the outward inclined ring table part, and the straight ring wall is provided with oil seal teeth and corresponds to the large-diameter part; the oil baffle sheet, the mounting ring, the oil baffle ring and the rotor form an annular oil collecting cavity together; an annular oil storage cavity is arranged in the mounting ring, and the oil storage cavity and the oil collection cavity form a double-cavity oil retainer structure together; after the oil droplet particles in the oil collecting cavity enter the oil storage cavity, the oil droplet particles in the oil storage cavity hardly enter the oil collecting cavity, and the oil droplet particles cannot penetrate through the oil seal teeth easily, so that oil leakage can be effectively prevented.
Description
Technical Field
The invention belongs to the technical field of steam turbines, and particularly relates to a double-cavity oil retaining ring structure.
Background
The oil deflector ring is generally used in places where oil exists but the oil quantity cannot be too much, redundant oil needs to be baffled back, and the oil is prevented from flowing outwards and leaking. The existing 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 a bearing box step by step. However, since there is a gap between the oil seal teeth and the rotor, if the amount of oil splashed onto the slinger is large, the structure cannot prevent the lubricating oil from leaking out from the gap between the rotor and the slinger, and splashing is formed along with the rotation of the rotor and thrown onto the heat insulating material of the nearby cylinder, which may cause fire accidents due to the high temperature of the cylinder.
Patent document CN 109707849B discloses an oil slinger structure, which includes an oil slinger, a rotor, an oil slinger and a mounting ring; the oil deflector ring and the oil deflector sheet are both of annular structures, and the rotor penetrates through inner holes of the oil deflector ring and the oil deflector sheet; the oil baffle plate is positioned on the inner side of the oil baffle ring, and the oil baffle plate is connected with the oil baffle ring through the mounting ring; the oil slinger is provided with a plurality of oil seal teeth close to the rotor; the inner diameter of the oil baffle is smaller than the diameter of the oil seal teeth, the diameter of the rotor at the oil baffle is smaller than the diameter of the rotor at the oil seal teeth, and the diameter difference of the rotors forms a boss; it is claimed that the leakage of the lubricating oil from the bearing housing can be effectively prevented. But leakage may still occur with this structure.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned drawbacks, and provides a dual-cavity oil-blocking ring structure to effectively prevent the leakage of the lubricating oil.
In order to solve the technical problem, the technical scheme adopted by the invention is a double-cavity oil retaining ring structure which comprises an oil retaining ring, a rotor, an oil retaining sheet and a mounting ring; the oil deflector ring, the oil deflector sheet and the mounting ring are all of annular structures; the rotor penetrates through the oil deflector ring, the oil deflector sheet and the inner hole of the annular structure of the mounting ring.
The rotor is of a cylindrical structure, and is divided into three parts which are directly connected at one side of the bearing seat, namely a small-diameter part, an annular boss part and a large-diameter part in sequence, wherein the annular boss part is composed of an inward inclined ring boss part and an outward inclined ring boss part, the inner ring edge of the inward inclined ring boss part is directly connected with the small-diameter part, the outer ring edge of the inward inclined ring boss part is directly connected with the inner ring edge of the outward inclined ring boss part, and the outer ring edge of the outward inclined ring boss part is directly connected with the large-diameter part.
The oil scraper ring is of an annular structure, and the inner annular wall of the oil scraper ring is divided into four directly connected parts, namely an inward inclined annular wall, a vertical annular wall, an outward inclined annular wall and a straight annular wall in sequence.
Inwards incline the rampart and correspond virtual company with inwards incline ring platform portion, vertical rampart corresponds the handing-over portion that is close to inwards incline ring platform portion and outwards inclines ring platform portion, it just corresponds and is close to outwards incline ring platform portion to be equipped with a plurality of oil blanket tooth on the outwards incline the rampart, it just corresponds and is close to the major diameter portion to be equipped with a plurality of oil blanket tooth on the straight rampart.
The oil baffle is positioned on the inner side of the oil baffle ring, the edge of an inner ring of the oil baffle is close to the small-diameter part, the edge of the inner ring of the oil baffle ring is close to the large-diameter part, and the oil baffle ring are tightly connected through the mounting ring; the oil baffle sheet, the mounting ring, the oil baffle ring and the rotor form an annular oil collecting cavity together.
The oil trap is characterized in that an annular oil storage cavity is arranged in the mounting ring and comprises a horn seam inlet, an oil mist bin, an oil collecting brim and an oil bearing groove, the annular oil storage cavities directly form the annular oil storage cavity in the inner portion of the mounting ring, and the annular oil storage cavity and the oil collecting cavity jointly form a double-cavity oil retainer structure.
And an oil dredging hole is also formed in the bottom of the oil storage cavity, so that lubricating oil can conveniently flow back into the bearing box.
Further, the inner diameter of the oil blocking sheet is just slightly larger than the outer diameter of the small-diameter part of the rotor, the inner diameter of the oil seal teeth on the outward inclined annular wall is just slightly larger than the outer diameter of the outward inclined annular table part, and the inner diameter of the oil seal teeth on the straight annular wall is just slightly larger than the outer diameter of the large-diameter part.
The inner diameter of the oil baffle sheet is smaller than the outer diameter of the annular boss part, so that splashed oil bead particles can change the splashing direction due to the blocking of the annular boss part, wherein the oil bead particles closest to a gap between the rotor and the oil baffle ring can splash along the surface of the inwardly inclined annular boss part, and as the surface of the inwardly inclined annular boss part is inwardly inclined, an oil bead particle splashing line can directly enter the oil collecting cavity through the inwardly inclined annular wall and cannot enter the gap between the vertical annular wall and the outer edge of the inwardly inclined annular boss part, so that the oil bead particles are greatly reduced from being sprayed to the oil seal teeth.
And a gap is reserved between the edge of the inner ring of the oil baffle and the rotor.
And a gap is reserved between the oil seal teeth and the rotor.
And a gap is reserved between the inward inclined annular wall and the inward inclined annular table part.
An oil collecting eave in the oil storage cavity is suspended on the inner side of the oil bearing groove; oil drops splashed into the oil storage cavity can only flow into the oil receiving groove, oil drop particles can only be scattered into the oil mist bin, and the oil drops hardly flow back into the oil collection cavity from the inlet of the horn slot and are more difficult to leak outwards through oil seal teeth.
The oil deflector ring, the oil deflector sheet and the mounting ring are tightly connected through welding or bolts.
Compared with the prior art, the invention has the following beneficial effects:
the oil drop splashing prevention device has the advantages that the annular boss part is arranged on the rotor and is provided with the annular surfaces which incline inwards and outwards, so that splashed oil drop particles can only be splashed along the surface of the annular boss part which inclines inwards, gaps between the rotor and an oil retainer are missed, and oil drop leakage is avoided.
And an inward inclined annular wall is arranged on the inner annular wall of the oil deflector ring, is in virtual connection with the inward inclined annular table part on the rotor, can receive oil droplet particles splashed by turning, and is guided to fly into the oil collecting cavity, so that oil mist is prevented from entering a gap between the oil deflector ring and the rotor.
The outward inclined annular table part on the rotor can change the splashing direction of oil droplet particles entering a gap between the oil retainer and the rotor again, so that the oil droplet particles are difficult to escape continuously, and oil mist leakage is avoided.
An oil collecting cavity is formed by the oil blocking piece, the mounting ring, the oil blocking ring and the rotor together to provide a splashing space for oil droplet particles, and the oil blocking ring can be further prevented from entering a gap between the oil blocking ring and the rotor.
Fifthly, an oil storage cavity is arranged in the mounting ring, and the horn seam inlet in the oil storage cavity enables oil droplet particles to easily enter but not easily exit; the oil collecting eaves are suspended on the inner side of the oil receiving groove, so that oil drops splashing into the oil storage cavity can only flow into the oil receiving groove and cannot flow back into the oil collecting cavity.
Sixthly, the oil storage cavity and the oil collection cavity jointly form a double-cavity oil retainer structure, after oil droplet particles in the oil collection cavity enter the oil storage cavity, the oil droplet particles in the oil storage cavity are difficult to enter the oil collection cavity again and difficult to penetrate through oil seal teeth, and lubricating oil can be effectively prevented from leaking integrally.
Drawings
Fig. 1 is a schematic sectional view of the dual-chamber oil-blocking ring structure of the present invention, wherein the arrows indicate the main splashing directions of the lubricant at the corresponding positions.
In the figure: 1. the oil baffle ring comprises an oil baffle ring, 2, a rotor, 3, an oil baffle sheet, 4, a mounting ring, 21, a small diameter part, 22, an annular boss part, 23, a large diameter part, 221, an inward inclined annular boss part, 222, an outward inclined annular boss part, 11, an inward inclined annular wall, 12, a vertical annular wall, 13, an outward inclined annular wall, 14, a straight annular wall, 5, oil seal teeth, 6, an oil collecting cavity, 7, an oil storage cavity, 71, a horn seam inlet, 72, an oil mist bin, 73, an oil collecting brim, 74, an oil receiving groove and 75 oil dredging holes.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to illustrate the invention but not to limit it further, and should not be construed as limiting the scope of the invention.
Example 1.
As shown in fig. 1, a dual-cavity oil slinger structure comprises an oil slinger 1, a rotor 2, an oil slinger 3 and a mounting ring 4; the oil deflector ring 1, the oil deflector sheet 3 and the mounting ring 4 are all of annular structures; the rotor 2 penetrates through the annular structure inner holes of the oil deflector ring 1, the oil deflector 3 and the mounting ring 4.
The rotor 2 is a cylindrical structure, the structure of one side of the bearing seat in the bearing box is divided into three parts which are directly connected, and a small diameter part 21, an annular boss part 22 and a large diameter part 23 are sequentially arranged from the inner side to the outer side, wherein the annular boss part 22 is composed of an inward inclined ring boss part 221 and an outward inclined ring boss part 222, the inner ring edge of the inward inclined ring boss part 221 is directly connected with the small diameter part 21, the outer ring edge of the inward inclined ring boss part 221 is directly connected with the inner ring edge of the outward inclined ring boss part 222, and the outer ring edge of the outward inclined ring boss part 222 is directly connected with the large diameter part 23, so that the integral structure of the annular boss part 22 is formed.
The oil slinger 1 is of an annular structure, the inner annular wall of the oil slinger is divided into four parts which are directly connected, and the four parts are an inward inclined annular wall 11, a vertical annular wall 12, an outward inclined annular wall 13 and a straight annular wall 14 from the inner side to the outer side in sequence.
The inward inclined annular wall 11 is correspondingly and virtually connected with the inward inclined annular table part 221, namely on the same inclined straight line or curve, but with a gap and without direct connection, so that when splashed oil droplet particles are splashed out along the inward inclined annular table part 221, the splashed oil droplet particles can continuously splash out along the inward inclined annular wall 11 and enter the oil collecting cavity 6, and can be prevented from entering a gap between the oil retainer 1 and the rotor 2 as far as possible, and oil leakage is avoided; the vertical annular wall 12 is correspondingly close to the intersection of the inward inclined annular table part 221 and the outward inclined annular table part 222, so that the gap between the oil slinger 1 and the rotor 2 can be reduced as much as possible; be equipped with a plurality of oil blanket tooth 5 on the rampart 13 that leans out and correspond and be close to outside slope ring platform portion 222, be equipped with a plurality of oil blanket tooth 5 on the straight rampart 14 and correspond and be close to large diameter portion 23.
The oil baffle 3 is positioned at the inner side of the oil baffle ring 1, and the inner ring edge of the oil baffle 3 is close to the small-diameter part 21; the oil baffle sheet 3 and the oil baffle ring 1 are tightly connected through a mounting ring 4; the oil baffle sheet 3, the mounting ring 4, the oil baffle ring 1 and the rotor 2 together comprise oil seal teeth 5 on the oil baffle ring 1 to form an oil collecting cavity 6.
An annular oil storage cavity 7 is arranged in the mounting ring 4, the annular oil storage cavity 7 comprises a horn seam inlet 71, an oil mist bin 72, an oil collecting eave 73 and an oil bearing groove 74, and the four structural parts are directly formed in the mounting ring 4 to form the annular oil storage cavity 7; the oil collecting eaves 73 are suspended at the inner side of the oil receiving groove 74, so that oil drops splashed into the oil storage cavity 7 can only flow into the oil receiving groove 74 along the oil collecting eaves 73, oil drop particles can only scatter into the oil mist bin 72, the oil drop particles are difficult to flow back into the oil collecting cavity 6 from the trumpet-shaped seam inlet 71, and the oil drop particles are difficult to leak outwards through the oil seal teeth 5.
The bottom of the oil storage cavity 7 is also provided with an oil drain hole 75 for facilitating lubricating oil to flow back into the bearing box.
Example 2.
As shown in the figure, in this embodiment, on the basis of embodiment 1, the inner diameter of the oil deflector 1 is made to be just slightly larger than the outer diameter of the small-diameter portion 21 of the rotor 2, the inner diameter of the oil seal teeth 5 on the outwardly-inclined annular wall 13 on the oil deflector ring 1 is made to be just slightly larger than the outer diameter of the outwardly-inclined annular table portion 222, and the inner diameter of the oil seal teeth 5 on the straight annular wall 14 is made to be just slightly larger than the outer diameter of the large-diameter portion 23.
Meanwhile, the inner diameter of the oil baffle 3 is smaller than the outer diameter of the annular boss part 22, so that the splashing direction of the splashed oil droplet particles can be changed due to the blocking of the annular boss part 22, wherein the oil droplet particles closest to the gap between the rotor 2 and the oil baffle ring 1 can splash along the surface of the inwardly inclined annular boss part 221, and because the surface of the inwardly inclined annular boss part 221 is inwardly inclined, the splashing line of the oil droplet particles can directly enter the oil collecting cavity 6 through the inwardly inclined annular wall 11 and can not enter the gap between the vertical annular wall 12 and the outer edge of the inwardly inclined annular boss part 221, so that the condition that the oil droplet particles are sprayed to the oil seal teeth 5 can be greatly reduced.
And a gap is reserved between the edge of the inner ring of the oil baffle 3 and the rotor 2.
And a gap is reserved between the oil seal teeth 5 and the rotor 2.
There is a gap between the inwardly inclined annular wall 11 and the inwardly inclined land portion 222.
The oil deflector ring 1, the oil deflector sheet 3 and the mounting ring 4 are tightly connected through welding or bolts.
Claims (9)
1. A double-cavity oil slinger structure comprises an oil slinger, a rotor, an oil slinger and a mounting ring; the oil deflector ring, the oil deflector sheet and the mounting ring are all of annular structures; the rotor penetrates through annular structural inner holes of the oil deflector ring, the oil deflector sheet and the mounting ring; the rotor is characterized in that the rotor is of a cylindrical structure, and is divided into three parts which are directly connected at one side of a bearing seat, namely a small-diameter part, an annular boss part and a large-diameter part in sequence, wherein the annular boss part is composed of an inward inclined ring boss part and an outward inclined ring boss part, the inner ring edge of the inward inclined ring boss part is directly connected with the small-diameter part, the outer ring edge of the inward inclined ring boss part is directly connected with the inner ring edge of the outward inclined ring boss part, and the outer ring edge of the outward inclined ring boss part is directly connected with the large-diameter part;
the oil scraper ring is of an annular structure, and the inner annular wall of the oil scraper ring is divided into four directly connected parts, namely an inward inclined annular wall, a vertical annular wall, an outward inclined annular wall and a straight annular wall in sequence;
the inward inclined annular wall is correspondingly and virtually connected with the inward inclined annular table part, the vertical annular wall is correspondingly close to the intersection part of the inward inclined annular table part and the outward inclined annular table part, a plurality of oil seal teeth are arranged on the outward inclined annular wall and correspondingly close to the outward inclined annular table part, and a plurality of oil seal teeth are arranged on the flat annular wall and correspondingly close to the large-diameter part;
the oil baffle sheet is positioned on the inner side of the oil baffle ring, and the inner ring edge of the oil baffle sheet is close to the small-diameter part; the oil baffle sheet and the oil baffle ring are tightly connected through the mounting ring; the oil baffle sheet, the mounting ring, the oil baffle ring and the rotor form an oil collecting cavity together;
be equipped with annular oil storage chamber in the installing ring, annular oil storage chamber includes loudspeaker seam entry, oil mist storehouse, receives oil eaves and holds the oil groove.
2. The dual-cavity oil-retaining ring structure of claim 1, wherein an oil drain hole is further formed at the bottom of the oil storage cavity.
3. The dual chamber oil deflector ring structure of claim 2, wherein the oil deflector has an inner diameter just slightly larger than the outer diameter of the small diameter portion of the rotor, the inner diameter of the oil-sealed teeth on the outwardly inclined ring wall is just slightly larger than the outer diameter of the outwardly inclined ring land portion, and the inner diameter of the oil-sealed teeth on the flat ring wall is just slightly larger than the outer diameter of the large diameter portion.
4. The dual cavity oil deflector ring structure of claim 3, wherein the oil deflector has an inner diameter smaller than an outer diameter of the annular boss portion.
5. The dual cavity oil deflector ring structure of claim 4, wherein there is a gap between the edge of the oil deflector inner ring and the rotor.
6. The dual cavity oil deflector ring structure of claim 5, wherein there is a gap between the oil-sealed teeth and the rotor.
7. The dual chamber oil deflector ring structure of claim 6, wherein there is a gap between the inwardly inclined ring wall and the inwardly inclined ring land portion.
8. The dual chamber oil deflector ring structure of claim 7, wherein the oil scooping eaves are suspended inside the oil receiving trough.
9. The dual chamber slinger structure of claim 8 wherein said slinger, slinger and mounting ring are secured by welding or bolting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110877480.XA CN113629929B (en) | 2021-07-31 | 2021-07-31 | Double-cavity oil retainer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110877480.XA CN113629929B (en) | 2021-07-31 | 2021-07-31 | Double-cavity oil retainer structure |
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| Publication Number | Publication Date |
|---|---|
| CN113629929A CN113629929A (en) | 2021-11-09 |
| CN113629929B true CN113629929B (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110877480.XA Active CN113629929B (en) | 2021-07-31 | 2021-07-31 | Double-cavity oil retainer structure |
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| Country | Link |
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| CN (1) | CN113629929B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161963A (en) * | 2013-03-18 | 2013-06-19 | 南车戚墅堰机车车辆工艺研究所有限公司 | Output shaft sealing device |
| CN104279329A (en) * | 2013-07-02 | 2015-01-14 | 苏州热工研究院有限公司 | Oil catch |
| CN109707849A (en) * | 2019-01-11 | 2019-05-03 | 东方电气集团东方汽轮机有限公司 | A kind of oil retainer structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1315161B1 (en) * | 2000-12-29 | 2003-02-03 | Danieli Off Mecc | RING SEAL FOR ROLLING CYLINDERS |
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2021
- 2021-07-31 CN CN202110877480.XA patent/CN113629929B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161963A (en) * | 2013-03-18 | 2013-06-19 | 南车戚墅堰机车车辆工艺研究所有限公司 | Output shaft sealing device |
| CN104279329A (en) * | 2013-07-02 | 2015-01-14 | 苏州热工研究院有限公司 | Oil catch |
| CN109707849A (en) * | 2019-01-11 | 2019-05-03 | 东方电气集团东方汽轮机有限公司 | A kind of oil retainer structure |
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| Publication number | Publication date |
|---|---|
| CN113629929A (en) | 2021-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221018 Address after: No. 399, Dengbei Road, Huishan Industrial Transformation Cluster, Wuxi City, Jiangsu Province, 214000 Applicant after: ZHIWEI POWER (WUXI) Co.,Ltd. Address before: 313000 Room 302, building 3, Xinghai Mingcheng, Aishan street, Wuxing District, Huzhou City, Zhejiang Province Applicant before: Zhou Zhangning |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A dual chamber oil baffle ring structure Granted publication date: 20221111 Pledgee: Bank of China Limited Wuxi Branch Pledgor: ZHIWEI POWER (WUXI) Co.,Ltd. Registration number: Y2024980015349 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |