CN207093149U - A kind of brush steam turbine bearing oil shelves in labyrinth and the brush steam turbine bearing in labyrinth - Google Patents
A kind of brush steam turbine bearing oil shelves in labyrinth and the brush steam turbine bearing in labyrinth Download PDFInfo
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- CN207093149U CN207093149U CN201721134877.5U CN201721134877U CN207093149U CN 207093149 U CN207093149 U CN 207093149U CN 201721134877 U CN201721134877 U CN 201721134877U CN 207093149 U CN207093149 U CN 207093149U
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- shelves
- brush
- steam turbine
- labyrinth
- wire bundle
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Abstract
A kind of brush steam turbine bearing oil shelves in labyrinth and the brush steam turbine bearing in labyrinth, including oily shelves matrix are the utility model is related to, wherein being sequentially provided with brush wire bundle and sealing flat tooth at the inwall of oily shelves matrix, brush wire bundle is respectively facing the middle vacancy of oily shelves matrix with sealing flat tooth.The beneficial effects of the utility model are：Being applied in combination by oily shelves matrix, brush wire bundle and sealing flat tooth can effectively prevent steam turbine bearing oil shelves oil leak and bearing housing from intaking, so as to overcome the problem of common flat tooth labyrinth type oil shelves cause to leak continuous increase with the abrasion of turbine rotor excessive surface, reliability and service life are improved.
Description
Technical field
It is a kind of brush steam turbine bearing oil shelves in labyrinth and the brush steam turbine bearing in labyrinth that the utility model, which is specifically related to,.
Background technology
Steam turbine is the rotary power machinery that the energy conversion of steam is turned into mechanical work, in order to ensure that steam turbine is normal
Safe operation, sliding bearing is provided with each rotor journal of steam turbine.Turbine oil system provides to sliding bearing
The lubricating oil of certain pressure is lubricated, cooled down.To prevent steam turbine bearing oil leak, a set of sealing dress need to be set at bearing both ends
Put.Traditional bearing oil shelves are frequently with flat tooth formula oil shelves.It causes rotor abrasion, oily shelves flat tooth to prevent flat tooth and Rub-impact
Gap setting between rotor is larger, thus such sealing effectiveness is poor, oily shelves oil leak often occurs, causes the accident of naked light.This
Outside, due to being tiny structure in bearing housing, gap is excessive between flat tooth and rotor, can suck the steam that axle envelope is spilt in bearing housing,
It is exceeded to ultimately cause turbo-engine lube water content.When turbine rotor vibrates, rotor journal may occur with flat tooth
Interference, can damage turbine rotor.
Brush seal is a kind of Efficient Damping sealing that developed recently gets up, and its leakage rate is the 1/ of flat tooth labyrinth seal
5-1/10, and allow the serious decentraction of transient state between sound and keep sealability constant, not only improve unit efficiency but also improved
The stability of rotor, applied to fields such as aero-engine, industry gas turbines.Brush seal replaces original with brush wire bundle
The flat tooth come, it is highly higher than original flat tooth, so as to reduce oily shelves gap, so as to reduce the generation of oil leak.Its sealing
Point brush filament be that during operation, the brush wire bundle scattered is similar to the wind of shelter-forest along the circle B alloy wire of rotor direction of rotation arrangement one
Effect is hindered, plays sealing effectiveness, the transient state bounce of rotor is adapted to, recovers original oily shelves gap, can ensure to use for a long time
Effect, and brush filament is flexible, also will not cause big influence to the vibration of unit, and oily shelves sealing effectiveness is obvious, therefore practical
Scope is wider.In addition, flat tooth-brush wire bundle favorable sealing property, can effectively prevent the steam that axle envelope is spilt from entering in bearing housing, and
Cause turbo-engine lube water content exceeded.
Utility model content
The utility model will solve above-mentioned technical problem and propose that one kind can reduce leakage rate, reduce brush bundle and rotor table
Surface wear, effectively prevent the brush steam turbine bearing oil shelves in labyrinth and the brush vapour in labyrinth of steam turbine bearing oil leak and bearing housing water inlet
Turbine bearing.
According to a kind of brush steam turbine bearing oil shelves in labyrinth of the present utility model, including oily shelves matrix, wherein oily shelves matrix
Inwall at be sequentially provided with brush wire bundle and sealing flat tooth, brush wire bundle and sealing flat tooth are respectively facing the middle vacancy of oily shelves matrix.
In addition, according to a kind of brush steam turbine bearing oil shelves in labyrinth of the present utility model, it is also special with following supplementary technology
Sign：According to some embodiments of the utility model, it is specific further, the brush wire bundle and be provided with Oil Guide between sealing flat tooth
Hole.
It is specific further, oil guide groove is additionally provided with the oily shelves matrix, oil guide groove is connected with oil guiding hole.
It is specific further, it is additionally provided with annular groove in the oily shelves matrix.
Specific further, the brush wire bundle and sealing flat tooth are located at annular groove both sides respectively.
Specific further, at the internal face of the oily shelves matrix to be provided with riveting groove, brush wire bundle and sealing flat tooth are placed in riveting
In groove.
It is specific further, it is connected between the riveting groove and brush wire bundle by baffle ring.
It is specific that further the thickness of the brush wire bundle is 2 mm to 4mm, and the front-end protection of shelves ring is highly 4 mm to 6mm,
The rear end protection height of shelves ring is 0.6 mm to 1.2mm afterwards.
It is specific that further the gap between the tooth top and turbine rotor of the sealing flat tooth is 0.15mm to 0.20mm,
Inclination angle between the brush wire bundle and turbine rotor surface is 30 degree to 60 degree.
A kind of brush steam turbine bearing in labyrinth, including turbine rotor and bearing shell, bearing shell are placed on turbine rotor, wherein vapour
It is connected between turbine wheel and bearing shell by the foregoing brush steam turbine bearing oil shelves in labyrinth.
The beneficial effects of the utility model are：Being applied in combination by oily shelves matrix, brush wire bundle and sealing flat tooth effectively prevents
Steam turbine bearing oil shelves oil leak and bearing housing water inlet, so as to overcome common flat tooth labyrinth type oil shelves and turbine rotor surface mistake
The problem of degree abrasion causes to leak continuous increase, improve reliability and service life.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that.
Fig. 1 is confined state structural representation of the present utility model.
Fig. 2 is partial enlargement structural representation at Fig. 1 A.
Fig. 3 is partial enlargement structural representation at Fig. 2 B.
Fig. 4 is the structural representation of oily shelves matrix.
Fig. 5 is partial enlargement structural representation at Fig. 4 C.
Fig. 6 is that turbine rotor, brush wire bundle are connected status architecture schematic diagram with baffle ring.
Fig. 7 is fundamental diagram of the present utility model.
Fig. 8 is the utility model brush wire bundle and turbine rotor contact condition principle schematic.
It is description of reference numerals below：Turbine rotor 1；Bearing shell 2；Oily shelves matrix 3；Brush wire bundle 301；Baffle ring 3011；It is close
Seal flat tooth 302；Oil guiding hole 303；Oil guide groove 304；Annular groove 305.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limitation.
The brush steam turbine bearing oil shelves in a kind of labyrinth below with reference to Fig. 1 to Fig. 8 descriptions according to the utility model embodiment,
Including oily shelves matrix 3, wherein being sequentially provided with brush wire bundle 301 and sealing flat tooth 302, the He of brush wire bundle 301 at the inwall of oily shelves matrix 3
Sealing flat tooth 302 is respectively facing the middle vacancy of oily shelves matrix 3.Wherein brush wire bundle 301 is distributed in oily shelves with sealing flat tooth 302
In matrix 3.This structure is applied in combination by oily shelves matrix 3, brush wire bundle 301 and sealing flat tooth 302 effectively prevents steam turbine bearing
Oily shelves oil leak and bearing housing water inlet, cause so as to overcome common flat tooth labyrinth type oil shelves and the abrasion of turbine rotor excessive surface
The problem of leakage constantly increases, improve reliability and service life.More specifically, when brush wire bundle 301 and turbine rotor 1 are sent out
During raw contact, brush wire bundle 8 produces flexible yielding, and the length direction of brush wire bundle 301 is formed radially bristle angle with turbine rotor 1
α angle increase, and now brush wire bundle 301 produces interference fit with turbine rotor 1, the sealing function of brush wire bundle 8 reduces
The leakage of bearing housing, while also effectively prevent steam and lubricating oil from entering bearing housing.
According to some embodiments of the utility model, it is specific further, the brush wire bundle 301 and and sealing flat tooth 302 it
Between be provided with oil guiding hole 303.Oil guide groove 304 is additionally provided with the oily shelves matrix 3, oil guide groove 304 is connected with oil guiding hole 303.Institute
State in oily shelves matrix 3 and be additionally provided with annular groove 305.The brush wire bundle 301 and sealing flat tooth 302 are located at the side of annular groove 305 respectively.Oil Guide
Hole 303, oil guide groove 304 and the combination of annular groove 305 can make lubricating oil flow back, and effectively prevent oily shelves oil leak.
According to some embodiments of the utility model, specific further, at the internal face of the oily shelves matrix 3 be provided with rivets
Groove, brush wire bundle 301 and sealing flat tooth 302 are placed in riveting groove.Pass through the phase of baffle ring 3011 between the riveting groove and brush wire bundle 301
Connection.Wherein brush wire bundle 301 is clamped by baffle ring 3011 by being welded and fixed, and is then fixed on oily shelves matrix 4 using riveting method
The riveting groove to take the shape of the letter U in.
According to some embodiments of the utility model, specific further the thickness of the brush wire bundle 301 is 2 mm to 4mm,
The front-end protection of shelves ring 3011 is highly 4 mm to 6mm, and the rear end protection height of shelves ring 3011 is 0.6 mm to 1.2mm.It is described
The gap sealed between flat tooth tooth top and rotor is 0.15mm to 0.20mm, can reduce most of bearing housing mist of oil pressure, with
Mitigate the seal pressure of brush wire bundle.
It is specific further according to some embodiments of the utility model, the brush wire bundle 301 and the surface of turbine rotor 1
Between inclination angle be 30 degree to 60 degree.It is arranged such, brush wire bundle 301 is tilted with respect to the direction of rotation of turbine rotor 1 as certain
Angle rule arranges, and can absorb the radial displacement of rotor, ensures that the free end stress of brush wire bundle 301 is minimum in contact, reduces brush
The abrasion of tow 301, brush wire bundle 301 is set to be more easily adapted to conform to the thermal deformation of turbine rotor 1.
The invention also discloses, a kind of brush steam turbine bearing in labyrinth, including turbine rotor 1 and bearing shell 2, bearing shell
2 are placed on turbine rotor 1, pass through the foregoing brush steam turbine bearing oil shelves phase in labyrinth wherein between turbine rotor 1 and bearing shell 2
Connection.This structure is applied in combination by oily shelves matrix 3, brush wire bundle 301 and sealing flat tooth 302 effectively prevents steam turbine bearing oil shelves
Oil leak and bearing housing water inlet, cause to leak so as to overcome common flat tooth labyrinth type oil shelves and the abrasion of turbine rotor excessive surface
The problem of constantly increasing, improve reliability and service life.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle and objective of the present utility model, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (10)
1. a kind of brush steam turbine bearing oil shelves in labyrinth, including oily shelves matrix（3）, it is characterised in that：Oily shelves matrix（3）Inwall
Place is sequentially provided with brush wire bundle（301）With sealing flat tooth（302）, brush wire bundle（301）With sealing flat tooth（302）It is respectively facing oily shelves base
Body（3）Middle vacancy.
2. the brush steam turbine bearing oil shelves in labyrinth according to claim 1, it is characterised in that：The oily shelves base bottom is provided with
Oil guiding hole（303）, it is arranged in brush wire bundle（301）With sealing flat tooth（302）Between.
3. the brush steam turbine bearing oil shelves in labyrinth according to claim 2, it is characterised in that：The oily shelves matrix（3）Bottom
It is additionally provided with oil guide groove（304）, oil guide groove（304）With oil guiding hole（303）It is connected, for the oil of interception to be back into bearing housing.
4. the brush steam turbine bearing oil shelves in labyrinth according to claim 1, it is characterised in that：The oily shelves matrix（3）It is interior to go back
Provided with annular groove（305）.
5. the brush steam turbine bearing oil shelves in labyrinth according to claim 4, it is characterised in that：The brush wire bundle（301）With it is close
Seal flat tooth（302）It is located at annular groove respectively（305）At both sides.
6. the brush steam turbine bearing oil shelves in labyrinth according to claim 1, it is characterised in that：The oily shelves matrix（3）It is interior
Riveting groove, brush wire bundle are provided with wall（301）With sealing flat tooth（302）It is placed in riveting groove.
7. the brush steam turbine bearing oil shelves in labyrinth according to claim 6, it is characterised in that：The riveting groove and brush wire bundle
（301）Between pass through shelves ring（3011）It is connected.
8. the brush steam turbine bearing oil shelves in labyrinth according to claim 6, it is characterised in that：The brush wire bundle（301）Thickness
Spend for 2 mm to 4mm, shelves ring（3011）Front-end protection be highly 4 mm to 6mm, shelves ring（3011）Rear end protection height be
0.6 mm to 1.2mm.
9. the brush steam turbine bearing oil shelves in labyrinth according to claim 1, it is characterised in that：The sealing flat tooth（302）'s
Tooth top and turbine rotor（1）Between gap be 0.15mm to 0.20mm, the brush wire bundle（301）With turbine rotor（1）
Inclination angle between surface is 30 degree to 60 degree.
10. a kind of brush steam turbine bearing in labyrinth, including turbine rotor（1）And bearing shell（2）, bearing shell（2）Steam turbine is placed on to turn
Son（1）, it is characterised in that：Turbine rotor（1）And bearing shell（2）Between be connected by the brush steam turbine bearing oil shelves in labyrinth,
The brush steam turbine bearing oil shelves in labyrinth include the brush steam turbine bearing oil shelves in labyrinth described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721134877.5U CN207093149U (en) | 2017-09-06 | 2017-09-06 | A kind of brush steam turbine bearing oil shelves in labyrinth and the brush steam turbine bearing in labyrinth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721134877.5U CN207093149U (en) | 2017-09-06 | 2017-09-06 | A kind of brush steam turbine bearing oil shelves in labyrinth and the brush steam turbine bearing in labyrinth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093149U true CN207093149U (en) | 2018-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721134877.5U Active CN207093149U (en) | 2017-09-06 | 2017-09-06 | A kind of brush steam turbine bearing oil shelves in labyrinth and the brush steam turbine bearing in labyrinth |
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| CN (1) | CN207093149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625909A (en) * | 2018-07-11 | 2018-10-09 | 中国船舶重工集团公司第七0三研究所 | A kind of efficient oil enveloping structure of steam turbine |
-
2017
- 2017-09-06 CN CN201721134877.5U patent/CN207093149U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625909A (en) * | 2018-07-11 | 2018-10-09 | 中国船舶重工集团公司第七0三研究所 | A kind of efficient oil enveloping structure of steam turbine |
| CN108625909B (en) * | 2018-07-11 | 2023-09-12 | 中国船舶重工集团公司第七0三研究所 | Efficient oil seal structure of steam turbine |
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