CN207740051U - A kind of bearing air hermetic oil catch - Google Patents
A kind of bearing air hermetic oil catch Download PDFInfo
- Publication number
- CN207740051U CN207740051U CN201721324707.3U CN201721324707U CN207740051U CN 207740051 U CN207740051 U CN 207740051U CN 201721324707 U CN201721324707 U CN 201721324707U CN 207740051 U CN207740051 U CN 207740051U
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- venthole
- outer shroud
- inner ring
- gas chamber
- air
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a kind of bearing air hermetic oil catches, including outer shroud, inner ring, former broach, air admission hole, outer shroud described in it is arranged on the outside of inner ring, outer shroud, which is internally provided with, deposits gas chamber, the gas chamber of depositing is connected to air admission hole, the second venthole and third venthole respectively, and inner ring is internally provided with the first venthole, and first venthole is connected to gas chamber is deposited, inner ring and outer rings bottom is both provided with former broach, and oil return hole is additionally provided on the outside of the outer shroud；The utility model passes through the pure air of the high pressure of station-service compressor to oil catch conveying compression; compressed air deposits gas chamber by control valve through what air admission hole entered oil catch; gas chamber is deposited by each venthole; compressed air is evenly distributed between outer shroud and the former broach of inner ring; compressed air forms one layer of high pressure gas protective film on turbine rotor bearing surface, and oil leak is prevented using compressed air to block the hole of sewing of rotary shaft by applied aerodynamics principle.
Description
Technical field
The utility model is related to power plant's bearing seal technical field more particularly to a kind of bearing air hermetic oil catches.
Background technology
In thermal power plant, the indoor lubricating oil of steam turbine bearing leaks outward in order to prevent, keeps the tight of sound part
Property, it is typically now all made of fixed tooth-like oil catch sealing, oil catch is made of inside and outside two groups of oil sealing teeth and oil-recovery tank, every group of oil
Gear tooth has 2~4 copper coin items or aluminium strip to be embedded on oil catch body, and effect is to prevent bearing indoor lubricating oil leakage and outer
Boundary's steam enters, and the oil catch fitting groove or the fixed mode of screw are mounted on the axial both ends of bearing chamber, this sealing technique
It is widely used in in-service Steam Turbine.The lubricating oil to splash when steam turbine high speed rotates can be oozed along between rotor and oil catch
Go out, lubricating oil, which falls to be easy to cause on high-temperature pipe and cylinder, smolders, catches fire and burn the dangerous existing of neighbouring protection cable etc.
As, therefore oil catch is the daily keypoint part for patrolling dimension of thermal power plant, needs guard key, hidden trouble of equipment is eliminated, to prevent in not
So, prevent fault spread, it is ensured that the safety and stabilization of power generation, it is therefore desirable to propose a kind of turbine rotor bearing air hermetic
Oil catch prevents oil catch oil leak.
Utility model content
The technical issues of the utility model solves：A kind of bearing air hermetic oil catch is provided, steam turbine of thermal power plant group is solved and turns
The problem of sub- bearing oil leak.
The technical solution of the utility model：A kind of bearing air hermetic oil catch, including outer shroud, inner ring, former broach, air admission hole,
The outer shroud is arranged on the outside of inner ring, and outer shroud, which is internally provided with, deposits gas chamber, and the gas chamber of depositing goes out with air admission hole, second respectively
Stomata is connected to third venthole, and inner ring is internally provided with the first venthole, and first venthole is connected to gas chamber is deposited, interior
Ring and outer shroud bottom are both provided with former broach, and oil return hole is additionally provided on the outside of the outer shroud.
The air admission hole is connected in by external steam line with air compressor.
It is provided with control valve on the external steam line.
The beneficial effects of the utility model：Pass through the pure air of the high pressure of station-service compressor to oil catch conveying compression, pressure
Contracting air deposits gas chamber by control valve through what air admission hole entered oil catch, deposits gas chamber by each venthole, by compressed air
It is evenly distributed between outer shroud and the former broach of inner ring, compressed air forms a floor height on turbine rotor bearing surface and calms the anger
Body protective film prevents oil leak, together using compressed air by applied aerodynamics principle to block the hole of sewing of rotary shaft
When, high pressure gas protective film is also prevented from moisture impurity and enters in oil, it is ensured that oily is pure.
Description of the drawings：
FIG. 1 is a schematic structural view of the utility model；
It is identified in figure：1, outer shroud, 2, inner ring, 3, former broach, 4, deposit gas chamber, 5, air admission hole, the 6, second venthole, 7, third
Venthole, the 8, first venthole, 9, oil return hole, 10, control valve, 11, compressor.
Specific implementation mode：
A kind of bearing air hermetic oil catch, including outer shroud 1, inner ring 2, former broach 3, air admission hole 5, the outer shroud 1 setting exist
The outside of inner ring 2, outer shroud 1, which is internally provided with, deposits gas chamber 4, it is described deposit gas chamber 4 respectively with air admission hole 5, the second venthole 6 and third
Venthole 7 is connected to, and inner ring 2 is internally provided with the first venthole 8, and first venthole 8 is connected to gas chamber 4 is deposited, 2 He of inner ring
1 bottom of outer shroud is both provided with former broach 3, and 1 outside of outer shroud is additionally provided with oil return hole 9.
The air admission hole 5 by external steam line with air compressor 11 in being connected to.
It is provided with control valve 10 on the external steam line, enters air hermetic oil catch for controlling compressed air
It is interior.
When work, compressor 11 conveys compressed air by external gas pipeline, and compressed air is passed through by control valve 10
Air admission hole 5 deposits gas chamber 4 into oil catch, deposits gas chamber by the first venthole 8, the second venthole 6, third venthole 7, will press
Contracting air is evenly distributed between outer shroud 1 and the former broach of inner ring 2, compressed air the surface deformation of turbine rotor bearing at
One layer of high pressure gas protective film is prevented using compressed air to block the hole of sewing of rotary shaft by applied aerodynamics principle
Leak-stopping oil.
Claims (3)
1. a kind of bearing air hermetic oil catch, including outer shroud (1), inner ring (2), former broach (3), air admission hole (5), it is characterised in that：
On the outside of inner ring (2), outer shroud (1), which is internally provided with, deposits gas chamber (4) for outer shroud (1) setting, and described deposits gas chamber (4) respectively
It being connected to air admission hole (5), the second venthole (6) and third venthole (7), inner ring (2) is internally provided with the first venthole (8),
First venthole (8) is connected to gas chamber (4) is deposited, and inner ring (2) and outer shroud (1) bottom are both provided with former broach (3), described
Outer shroud (1) on the outside of be additionally provided with oil return hole (9).
2. a kind of bearing air hermetic oil catch according to claim 1, it is characterised in that：The air admission hole (5) is in passing through
External steam line is connected to air compressor (11).
3. a kind of bearing air hermetic oil catch according to claim 2, it is characterised in that：It is set on the external steam line
It is equipped with control valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721324707.3U CN207740051U (en) | 2017-10-13 | 2017-10-13 | A kind of bearing air hermetic oil catch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721324707.3U CN207740051U (en) | 2017-10-13 | 2017-10-13 | A kind of bearing air hermetic oil catch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207740051U true CN207740051U (en) | 2018-08-17 |
Family
ID=63115203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721324707.3U Active CN207740051U (en) | 2017-10-13 | 2017-10-13 | A kind of bearing air hermetic oil catch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207740051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112888204A (en) * | 2021-01-12 | 2021-06-01 | 浙江中宏防爆电气有限公司 | High-protection high-temperature-resistant explosion-proof box |
-
2017
- 2017-10-13 CN CN201721324707.3U patent/CN207740051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112888204A (en) * | 2021-01-12 | 2021-06-01 | 浙江中宏防爆电气有限公司 | High-protection high-temperature-resistant explosion-proof box |
| CN112888204B (en) * | 2021-01-12 | 2022-06-03 | 浙江中宏防爆电气有限公司 | High-protection high-temperature-resistant explosion-proof box |
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