CN208996771U - A kind of low abrasion labyrinth-brush composite seal device - Google Patents
A kind of low abrasion labyrinth-brush composite seal device Download PDFInfo
- Publication number
- CN208996771U CN208996771U CN201821439492.4U CN201821439492U CN208996771U CN 208996771 U CN208996771 U CN 208996771U CN 201821439492 U CN201821439492 U CN 201821439492U CN 208996771 U CN208996771 U CN 208996771U
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- China
- Prior art keywords
- brush
- bearing
- labyrinth
- wire bundle
- rear baffle
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- 238000005299 abrasion Methods 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 230000004927 fusion Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract 2
- 238000005452 bending Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model relates to a kind of low abrasion labyrinth-brush composite seal devices, belong to technical field of mechanical.The utility model includes labyrinth teeth, bearing, front apron, brush wire bundle, rear baffle, fusion welded zone, axle sleeve, rotor；Brush wire bundle root forms fusion welded zone by welding process with front apron and rear baffle, rear baffle is equipped with relief groove, brush wire bundle is fixedly mounted on composition brush filament ring between front apron, rear baffle by fusion welded zone, brush filament ring interference fit is mounted on two bearing inner races, axle sleeve is placed between two bearings, and labyrinth teeth is placed in brush filament ring and bearing two sides.The utility model increases bearing capacity, reduces leakage rate, improves sealing performance；The brush filament ring of sealing device can be rotated by bearing, can effectively reduce the fretting wear between brush wire bundle end and rotor, brush filament service life can be improved；Two bearings are connected with axle sleeve, and solving gas leakage unevenly leads to moment of flexure suffered by brush filament ring, prolong the service life.
Description
Technical field
The utility model relates to a kind of low abrasion labyrinth-brush composite seal devices, belong to technical field of mechanical.
Background technique
In the turbomachineries such as aero-engine and gas turbine, it is often necessary to fluid between revolving part and static element into
Row sealing.Labyrinth seal at present and brush seal are applied more universal in turbomachinery.Two problems of wear-out life and leakage
It is the most important two indices of sealing.Labyrinth seal bearing capacity is larger, but due to generally having one between labyrinth teeth and rotor
Fixed gap causes labyrinth seal slip larger；Brush seal leakage rate is only the 10% ~ 20% of labyrinth seal, but it is brushed
It is generally contacted between silk tip and rotor, generating frictional heat generation causes its abrasion larger.
The sealing principle of brush seal is to play flowing resistance to the fluid of upstream and downstream by the compact brush filament of tens of thousands of arrangements
The effect hindered, the generation friction thermal wear that contacts with each other between a large amount of brush filament tips and rotor.Frictional heat and coefficient of friction, brush filament
Tip force, rotor surface linear velocity are related, and reduce the means that brush wire bundle is worn with friction rotor at present and be mainly: selecting low rub
Wipe the brush wire bundle and rotor coating pairing material of coefficient, but its higher cost；Change the geomery of brush wire bundle to reduce tip
Power etc., but its functional effect is unobvious.
Comprehensive utilization labyrinth seal bearing capacity is strong, and the low advantage of brush seal slip can effectively reduce brush close
Sealing performance, reliability and service life can be improved in the abrasion of envelope.
Utility model content
The purpose of the utility model is to provide a kind of low abrasion labyrinth-brush composite seal devices, are held using labyrinth seal
Pressure energy power is strong, and the low advantage of brush seal slip can effectively reduce the abrasion of brush seal, with improve sealing reliability and
Service life.
The utility model is realized by following technical scheme: a kind of low abrasion labyrinth-brush composite seal device, including labyrinth
Tooth 1, bearing 2, front apron 3, brush wire bundle 4, rear baffle 5, fusion welded zone 6, axle sleeve 7, rotor 8；4 root of brush wire bundle and front apron 3 and
Rear baffle 5 forms fusion welded zone 6 by welding process, and rear baffle 5 is equipped with relief groove, and brush wire bundle 4 is fixedly mounted on by fusion welded zone 6
Brush filament ring 9 is constituted between front apron 3, rear baffle 5,4 end of brush wire bundle is placed on the rotor 8 of machine by friction, brush filament ring 9
Interference fit is mounted on two 2 inner rings of bearing, and axle sleeve 7 is placed between two bearings 2, and labyrinth teeth 1 is placed in brush filament ring 9 and bearing
2 two sides, labyrinth teeth 1 and bearing 2 have axial gap.
The bearing 2 is the rolling bearing that can bear radial force and axial force.
7 inner ring of axle sleeve and brush filament ring 9 have gap, two bearings 2 and axle sleeve 7 for solving since air-flow power is uneven and
Lead to 9 bending moments of brush filament ring.
Between 1 ~ 2mm, 4 end of brush wire bundle and rotor 8 contact gapless in gap between the labyrinth teeth 1 and rotor 8.
A kind of working principle of low abrasion labyrinth-brush composite seal device are as follows: upstream high lateral pressure is successively by fan
Behind palace seal area, brush seal area, labyrinth seal area, pressure can decline to a great extent, and realize sealing function.Labyrinth seal area is labyrinth
Tooth 1；By welding process formation fusion welded zone 6, whole interference fit is mounted on for 4 root of brush wire bundle and front apron 3 and rear baffle 5
Two 2 inner rings of bearing have axle sleeve 7 between bearing 2, form brush seal area；When machine operation rotor 8 rotates, rotor 8 and brush
The contact of 4 end of tow generates frictional force, and due to the effect of bearing 2, brush filament ring 9 can follow rotor 8 to rotate, 8 surface of rotor and brush
The reduction of 4 end relative velocity of tow can effectively reduce friction.
The utility model has the following beneficial effects:
1, labyrinth seal and brush seal are combined together by sealing device, increase bearing capacity, reduce leakage rate, are improved
Sealing performance；
2, the brush filament ring of sealing device can be rotated by bearing, can effectively reduce rubbing between brush wire bundle end and rotor
Scouring damage, can be improved brush filament service life, and compared to other structures for reducing brush seal abrasion, effect is more preferable；
3, two bearings are connected with axle sleeve, and solving gas leakage unevenly leads to moment of flexure suffered by brush filament ring, extend and use
Service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of utility model；
Fig. 2 is the utility model partial enlargement structural representation；
Fig. 3 is the sectional view along A-A of Fig. 1.
Each label in figure are as follows: 1: labyrinth teeth, 2: bearing, 3: front apron, 4: brush wire bundle, 5: rear baffle, 6: fusion welded zone, 7: axis
Set, 8: rotor, 9: brush filament ring.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in further detail, but the content of the utility model is not
It is limited to the range.
Embodiment 1: as shown in Figure 1-3, a kind of low abrasion labyrinth-brush composite seal device, including labyrinth teeth 1, bearing
2, front apron 3, brush wire bundle 4, rear baffle 5, fusion welded zone 6, axle sleeve 7, rotor 8；4 root of brush wire bundle and front apron 3 and rear baffle 5 are logical
Cross welding process formed fusion welded zone 6, rear baffle 5 be equipped with relief groove, brush wire bundle 4 by fusion welded zone 6 be fixedly mounted on front apron 3,
Between rear baffle 5, brush filament ring 9 is constituted, 4 end of brush wire bundle is placed on the rotor 8 of machine by friction, and 9 interference of brush filament ring is matched
Conjunction is mounted on two 2 inner rings of bearing, and axle sleeve 7 is placed between two bearings 2, and labyrinth teeth 1 is placed in 2 two sides of brush filament ring 9 and bearing,
Labyrinth teeth 1 and bearing 2 have axial gap.
Bearing 2 is the rolling bearing that can bear radial force and axial force.
7 inner ring of axle sleeve and brush filament ring 9 have gap, and two bearings 2 cause for solving since air-flow power is uneven with axle sleeve 7
9 bending moments of brush filament ring.
Between 1 ~ 2mm, 4 end of brush wire bundle and rotor 8 contact gapless in gap between labyrinth teeth 1 and rotor 8.
Embodiment 2: as shown in Figure 1-3, a kind of low abrasion labyrinth-brush composite seal device, including labyrinth teeth 1, bearing
2, front apron 3, brush wire bundle 4, rear baffle 5, fusion welded zone 6, axle sleeve 7, rotor 8；4 root of brush wire bundle and front apron 3 and rear baffle 5 are logical
Cross welding process formed fusion welded zone 6, rear baffle 5 be equipped with relief groove, brush wire bundle 4 by fusion welded zone 6 be fixedly mounted on front apron 3,
Brush filament ring 9 is constituted between rear baffle 5,4 end of brush wire bundle is placed on the rotor 8 of machine by friction, and brush filament ring 9 is interference fitted
Two 2 inner rings of bearing are mounted on, axle sleeve 7 is placed between two bearings 2, and labyrinth teeth 1 is placed in 2 two sides of brush filament ring 9 and bearing, fan
Palace tooth 1 and bearing 2 have axial gap.
Bearing 2 is the rolling bearing that can bear radial force and axial force.
7 inner ring of axle sleeve and brush filament ring 9 have gap, and axle sleeve 7 leads to 9 institute of brush filament ring since air-flow power is uneven for solving
Bending moment.
Gap between labyrinth teeth 1 and rotor 8 is 1.5mm, and 4 end of brush wire bundle and rotor 8 contact gapless.
Claims (4)
1. a kind of low abrasion labyrinth-brush composite seal device, it is characterised in that: including labyrinth teeth (1), bearing (2), front apron
(3), brush wire bundle (4), rear baffle (5), fusion welded zone (6), axle sleeve (7), rotor (8)；Brush wire bundle (4) root and front apron (3) and
Rear baffle (5) forms fusion welded zone (6) by welding process, and rear baffle (5) is equipped with relief groove, and brush wire bundle (4) passes through fusion welded zone (6)
It is fixedly mounted on composition brush filament ring (9) between front apron (3), rear baffle (5), brush wire bundle (4) end is placed in machine by friction
On the rotor (8) of device, brush filament ring (9) interference fit is mounted on two bearing (2) inner rings, axle sleeve (7) be placed in two bearings (2) it
Between, labyrinth teeth (1) is placed in brush filament ring (9) and bearing (2) two sides, and there are axial gap in labyrinth teeth (1) and bearing (2).
2. low abrasion labyrinth according to claim 1-brush composite seal device, it is characterised in that: the bearing (2) is
It can bear the rolling bearing of radial force and axial force.
3. low abrasion labyrinth according to claim 1-brush composite seal device, it is characterised in that: in the axle sleeve (7)
Circle has gap with brush filament ring (9), and two bearings (2) are connected for solving to lead to brush filament since air-flow power is uneven with axle sleeve (7)
Ring (9) institute bending moment.
4. low abrasion labyrinth according to claim 1-brush composite seal device, it is characterised in that: the labyrinth teeth (1)
Between 1 ~ 2mm, brush wire bundle (4) end and rotor (8) contact gapless in gap between rotor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439492.4U CN208996771U (en) | 2018-09-04 | 2018-09-04 | A kind of low abrasion labyrinth-brush composite seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439492.4U CN208996771U (en) | 2018-09-04 | 2018-09-04 | A kind of low abrasion labyrinth-brush composite seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208996771U true CN208996771U (en) | 2019-06-18 |
Family
ID=66799938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821439492.4U Active CN208996771U (en) | 2018-09-04 | 2018-09-04 | A kind of low abrasion labyrinth-brush composite seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208996771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991883A (en) * | 2022-05-24 | 2022-09-02 | 中国科学院工程热物理研究所 | Radial multilayer brush wire brush type sealing structure |
-
2018
- 2018-09-04 CN CN201821439492.4U patent/CN208996771U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991883A (en) * | 2022-05-24 | 2022-09-02 | 中国科学院工程热物理研究所 | Radial multilayer brush wire brush type sealing structure |
| CN114991883B (en) * | 2022-05-24 | 2023-08-11 | 中国科学院工程热物理研究所 | Radial multilayer brush silk brush formula seal structure |
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