CN107630721A - A kind of spliced brush seal of circumference in equal parts - Google Patents
A kind of spliced brush seal of circumference in equal parts Download PDFInfo
- Publication number
- CN107630721A CN107630721A CN201710945352.8A CN201710945352A CN107630721A CN 107630721 A CN107630721 A CN 107630721A CN 201710945352 A CN201710945352 A CN 201710945352A CN 107630721 A CN107630721 A CN 107630721A
- Authority
- CN
- China
- Prior art keywords
- brush
- rear baffle
- front apron
- ring section
- brush ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000006837 decompression Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000011218 segmentation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Abstract
The present invention relates to a kind of spliced brush seal of circumference in equal parts, belong to turbine seal technical field.The present invention includes front apron, rear baffle, brush wire bundle, is fixedly connected, stator, screw；Front apron is located at air-flow high pressure, rear baffle is located at air-flow low pressure, brush wire bundle is clamped and installed between front apron and rear baffle by being fixedly connected, rear baffle contacts pressure-bearing surface with brush wire bundle and offers indent ring decompression groove, front apron, rear baffle, brush wire bundle, be fixedly connected connection installation composition brush ring section, screwed hole is uniformly offered on the rear baffle of brush ring section, brush ring section is arranged on stator by the screwed hole on rear baffle and screw, direction composition brush ring of the brush ring section along brush filament established angle.The present invention can specific aim replace the brush ring section of brush filament heavy wear, avoid replacing whole brush ring and cause the wasting of resources；Leak low, sealing characteristics are good；It is convenient to dismantle, be easy to maintain；Under equal cost, segmentation is spliced again can extend the overall service life of brush ring, can increase economic efficiency.
Description
Technical field
The present invention relates to a kind of spliced brush seal of circumference in equal parts, belong to turbine seal technical field.
Background technology
Brush seal as it is a kind of it is adaptable can interference seal form, substitute labyrinth seal to be transported extensively in recent years
Use in aero-engine, it is brush under the conditions of the high rotating speed of aero-engine, High Pressure Difference, the high such " three high " of border rotating speed
The sealing characteristics of sealing are by baptism.The front apron of brush seal is located at the high-pressure side of air-flow, and rear baffle is located at air-flow
Low-pressure side, brush filament and rotor radial center be in 45 °~55 ° circumferential angles, arrange closely be fixed on forward and backward baffle plate it
Between.Substantial amounts of theory and practice both at home and abroad shows, after brush filament is offset by rotor runway to radial direction movement, when rotor takes off
During from skew or deceleration, due to the frictional force between brush filament and backboard, brush filament is hung, and brush filament hysteresis effect, shadow occurs
Ring the seal performance of brush seal.
Due to the flexibility of brush seal brush filament so that brush seal is adapted between engine rotor and stator between transient state radial direction
The change of gap or the eccentric motion of rotor, after long-term work, the circular runout of rotor causes brush filament on brush ring circumference
The different degrees of abrasion in tip, influences its sealing characteristics, even results in seal failure.After a protracted use, brush Shu Duan
The adhesive wear of portion and rotor and cause gap to increase, leakage increase, seal failure influence aero-engine performance, at this moment
Integral replacing brush ring is needed, if other positions of brush ring are not worn significantly, that will make a part of brush filament lose exploitation value
Value, causes the wasting of resources.
The content of the invention
It is an object of the invention to provide a kind of spliced brush seal of circumference in equal parts, to solve because of transient state between rotor and stator
The change of radial clearance or the eccentric motion of rotor and produce local brush filament serious wear in brush ring and need integral replacing, cause
The problem of making the wasting of resources.
The present invention is realized by following technical scheme：A kind of spliced brush seal of circumference in equal parts, including front apron 1, rear gear
Plate 2, brush wire bundle 3, it is fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow low pressure
Place, brush wire bundle 3 are clamped and installed between front apron and rear baffle 2 by being fixedly connected with 8, and rear baffle 2 contacts pressure-bearing with brush wire bundle 3
Face offers indent ring decompression groove 4, and ring decompression groove 4 can reduce " hesitation " of brush seal, and the internal diameter of front apron 1 is with after
The external diameter of the ring decompression groove 4 opened up on baffle plate 2 is concordant, front apron 1, rear baffle 2, brush wire bundle 3, be fixedly connected 8 connections installation
Brush ring section 6 is formed, uniformly offers screwed hole 5 on the rear baffle 2 of brush ring section 6, brush ring section 6 passes through the screwed hole 5 on rear baffle 2
It is arranged on screw 10 on stator 9, direction composition brush ring 7 of the brush ring section 6 along brush filament established angle.
The brush ring 7 is made up of N number of brush ring section 6, and N can be 3~8 according to application needs.
A kind of operation principle of the spliced brush seal of circumference in equal parts is：, will first according to the size of brush ring 7 in processing
The brush ring section 6 that its girth of brush ring 7 is divided into N parts is designed, and Batch assemblage brush ring is carried out along the brush filament installation angular direction of brush wire bundle 3
Section 6, is then spliced into a brush ring 7 by the brush ring section 6 of this N equal portions, each brush ring section 6 is fixedly mounted by screw 10 successively
On stator 9.In use, the eccentric motion of the change of transient state radial clearance or rotor 11 between rotor 11 and stator 9
Cause the brush filament of the local brush wire bundle 3 of brush ring 7 to destroy, specifically brushed when in the case of local brush filament serious wear, finding at which
In ring segment 6, replaced, worked on using same type and intact brush ring section 6.Meanwhile the ring decompression groove that rear baffle 2 opens up
4 can lower " hesitation " of brush filament, reduce the leakage of gas, improve its sealing characteristics.
The invention has the advantages that：
1st, can specific aim replace the brush ring section of brush filament heavy wear, avoid replacing whole brush ring and cause the wasting of resources；
2nd, leakage is low, and sealing characteristics are good；
3rd, it is simple in construction, convenient to dismantle, be easy to maintain；
4th, under equal cost, segmentation is spliced again can extend the overall service life of brush ring, can increase economic efficiency.
Brief description of the drawings
Fig. 1 is brush ring segment structure front view of the present invention；
Fig. 2 is the three dimensional structure diagram of brush ring section of the present invention；
Fig. 3 forms brush ring structural representation for the present invention by brush ring section；
Fig. 4 is brush ring section of the present invention and stator mounting structure schematic diagram
Fig. 5 is rear baffle three dimensional structure diagram of the present invention.
In figure respectively marked as：1：Front apron, 2：Rear baffle, 3：Brush wire bundle, 4：Ring decompression groove, 5：Screwed hole, 6：Brush ring
Section, 7：Brush ring, 8：Be fixedly connected, 9：Stator, 10：Screw, 11：Rotor.
Embodiment
With reference to the accompanying drawings and examples, the invention will be further described, but present disclosure be not limited to it is described
Scope.
Embodiment 1：As Figure 1-5, the spliced brush seal of a kind of circumference in equal parts, including front apron 1, rear baffle 2,
Brush wire bundle 3, it is fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow low pressure, brush
Tow 3 is clamped and installed between front apron and rear baffle 2 by being fixedly connected with 8, and rear baffle 2 contacts pressure-bearing surface with brush wire bundle 3 and opened
Provided with indent ring decompression groove 4, the external diameter of ring decompression groove 4 of the internal diameter of front apron 1 with being opened up on rear baffle 2 is concordant, front apron
1st, rear baffle 2, brush wire bundle 3, be fixedly connected with 8 connections installation composition brush ring section 6, uniformly offer spiral shell on the rear baffle 2 of brush ring section 6
Pit 5, brush ring section 6 are arranged on stator 9 by the screwed hole 5 on rear baffle 2 and screw 10, and brush ring section 6 is installed along brush filament
The direction composition brush ring 7 at angle.
Brush ring 7 is made up of 3 brush ring sections 6.
Embodiment 2：As Figure 1-5, the spliced brush seal of a kind of circumference in equal parts, including front apron 1, rear baffle 2,
Brush wire bundle 3, it is fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow low pressure, brush
Tow 3 is clamped and installed between front apron and rear baffle 2 by being fixedly connected with 8, and rear baffle 2 contacts pressure-bearing surface with brush wire bundle 3 and opened
Provided with indent ring decompression groove 4, the external diameter of ring decompression groove 4 of the internal diameter of front apron 1 with being opened up on rear baffle 2 is concordant, front apron
1st, rear baffle 2, brush wire bundle 3, be fixedly connected with 8 connections installation composition brush ring section 6, uniformly offer spiral shell on the rear baffle 2 of brush ring section 6
Pit 5, brush ring section 6 are arranged on stator 9 by the screwed hole 5 on rear baffle 2 and screw 10, and brush ring section 6 is installed along brush filament
The direction composition brush ring 7 at angle.
Brush ring 7 is made up of 5 brush ring sections 6.
Embodiment 3：As Figure 1-5, the spliced brush seal of a kind of circumference in equal parts, including front apron 1, rear baffle 2,
Brush wire bundle 3, it is fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow low pressure, brush
Tow 3 is clamped and installed between front apron and rear baffle 2 by being fixedly connected with 8, and rear baffle 2 contacts pressure-bearing surface with brush wire bundle 3 and opened
Provided with indent ring decompression groove 4, the external diameter of ring decompression groove 4 of the internal diameter of front apron 1 with being opened up on rear baffle 2 is concordant, front apron
1st, rear baffle 2, brush wire bundle 3, be fixedly connected with 8 connections installation composition brush ring section 6, uniformly offer spiral shell on the rear baffle 2 of brush ring section 6
Pit 5, brush ring section 6 are arranged on stator 9 by the screwed hole 5 on rear baffle 2 and screw 10, and brush ring section 6 is installed along brush filament
The direction composition brush ring 7 at angle.
Brush ring 7 is made up of 8 brush ring sections 6.
Claims (2)
- A kind of 1. spliced brush seal of circumference in equal parts, it is characterised in that：Including front apron（1）, rear baffle（2）, brush wire bundle （3）, be fixedly connected（8）, stator（9）, screw（10）；Front apron（1）At air-flow high pressure, rear baffle（2）It is low positioned at air-flow At pressure, brush wire bundle（3）By being fixedly connected（8）It is clamped and installed in front apron and rear baffle（2）Between, rear baffle（2）With brush filament Beam（3）Contact pressure-bearing surface offers indent ring decompression groove（4）, front apron（1）Internal diameter and rear baffle（2）On the annular that opens up subtract Indent（4）External diameter it is concordant, front apron（1）, rear baffle（2）, brush wire bundle（3）, be fixedly connected（8）Connection installation composition brush ring section （6）, brush ring section（6）Rear baffle（2）On uniformly offer screwed hole（5）, brush ring section（6）Pass through rear baffle（2）On screw thread Hole（5）With screw（10）Installed in stator（9）On, brush ring section（6）Brush ring is formed along the direction of brush filament established angle（7）.
- 2. circumference in equal parts according to claim 1 splices brush seal, it is characterised in that：The brush ring（7）By N number of brush ring Section（6）Composition, N can be 3~8 according to application needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945352.8A CN107630721B (en) | 2017-10-12 | 2017-10-12 | Equal-split circumference spliced brush type seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945352.8A CN107630721B (en) | 2017-10-12 | 2017-10-12 | Equal-split circumference spliced brush type seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107630721A true CN107630721A (en) | 2018-01-26 |
| CN107630721B CN107630721B (en) | 2023-10-03 |
Family
ID=61103205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710945352.8A Active CN107630721B (en) | 2017-10-12 | 2017-10-12 | Equal-split circumference spliced brush type seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107630721B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630208A (en) * | 2018-12-16 | 2019-04-16 | 中国航发沈阳发动机研究所 | A kind of tapered brush seal structure |
| CN109899526A (en) * | 2019-04-11 | 2019-06-18 | 广州市挂绿环保工程有限公司 | A kind of rotary sealing structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001055625A1 (en) * | 2000-01-31 | 2001-08-02 | General Electric Company | Self-centering brush seal |
| CN102900476A (en) * | 2012-09-21 | 2013-01-30 | 清华大学 | Low-leakage brush type sealing structure based on piezoelectric effect |
| CN203499823U (en) * | 2013-09-09 | 2014-03-26 | 中国航空动力机械研究所 | Brush type sealing device |
| CN204002941U (en) * | 2014-07-28 | 2014-12-10 | 江苏透平密封高科技有限公司 | Hide streaming brush steam seal |
| CN104454030A (en) * | 2014-11-14 | 2015-03-25 | 中国航空动力机械研究所 | High-pressure-resisting low-hysteresis brush type sealing device |
| CN104806301A (en) * | 2015-04-03 | 2015-07-29 | 清华大学 | Non-contact fingertip-labyrinth-brush type combined sealer |
| CN205479337U (en) * | 2016-01-08 | 2016-08-17 | 沈阳航空航天大学 | Backplate has brush type sealing structure of annular boss |
| CN205744002U (en) * | 2016-06-27 | 2016-11-30 | 清华大学 | A kind of unidirectional labyrinth brush composite seal assembly |
| CN106246240A (en) * | 2016-07-29 | 2016-12-21 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of brush seal structure |
| CN106246239A (en) * | 2016-07-29 | 2016-12-21 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of hybrid brush seals structure |
-
2017
- 2017-10-12 CN CN201710945352.8A patent/CN107630721B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001055625A1 (en) * | 2000-01-31 | 2001-08-02 | General Electric Company | Self-centering brush seal |
| CN102900476A (en) * | 2012-09-21 | 2013-01-30 | 清华大学 | Low-leakage brush type sealing structure based on piezoelectric effect |
| CN203499823U (en) * | 2013-09-09 | 2014-03-26 | 中国航空动力机械研究所 | Brush type sealing device |
| CN204002941U (en) * | 2014-07-28 | 2014-12-10 | 江苏透平密封高科技有限公司 | Hide streaming brush steam seal |
| CN104454030A (en) * | 2014-11-14 | 2015-03-25 | 中国航空动力机械研究所 | High-pressure-resisting low-hysteresis brush type sealing device |
| CN104806301A (en) * | 2015-04-03 | 2015-07-29 | 清华大学 | Non-contact fingertip-labyrinth-brush type combined sealer |
| CN205479337U (en) * | 2016-01-08 | 2016-08-17 | 沈阳航空航天大学 | Backplate has brush type sealing structure of annular boss |
| CN205744002U (en) * | 2016-06-27 | 2016-11-30 | 清华大学 | A kind of unidirectional labyrinth brush composite seal assembly |
| CN106246240A (en) * | 2016-07-29 | 2016-12-21 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of brush seal structure |
| CN106246239A (en) * | 2016-07-29 | 2016-12-21 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of hybrid brush seals structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630208A (en) * | 2018-12-16 | 2019-04-16 | 中国航发沈阳发动机研究所 | A kind of tapered brush seal structure |
| CN109899526A (en) * | 2019-04-11 | 2019-06-18 | 广州市挂绿环保工程有限公司 | A kind of rotary sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107630721B (en) | 2023-10-03 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Juan Inventor after: Liu Meihong Inventor after: Tan Yongfa Inventor after: Zhang Qin Inventor after: Wang Jixiang Inventor after: Wang Kaiqiang Inventor before: Liu Meihong Inventor before: Tan Yongfa Inventor before: Wang Juan Inventor before: Zhang Qin Inventor before: Wang Jixiang Inventor before: Wang Kaiqiang |
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